Skocz do pozycji: 1.

Tytuł:

Wstępna propozycja metodyki identyfikacji surowców kluczowych dla polskiej gospodarki
Preliminary proposal of methodology of identification of key minerals for the Polish economy

Autorzy:

Galos, K.
Smakowski, T.

Powiązania:

https://bibliotekanauki.pl/articles/395095.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

surowce krytyczne
surowce kluczowe
gospodarka surowcami mineralnymi
polityka surowcowa
critical minerals
key minerals
minerals management
mineral policy

Opis:

Od 2013 r. Ministerstwo Gospodarki, w porozumieniu z innymi ministerstwami, pracuje nad spójnym dokumentem pt. „Plan działań na rzecz bezpieczeństwa Polski w zakresie surowców nieenergetycznych". Wśród działań tych przewiduje się m.in. opracowanie listy tzw. surowców kluczowych, wzorem rozwiązań stosowanych na poziomie Unii Europejskiej oraz zaproponowanych w niektórych krajach Unii. Artykuł prezentuje różne definicje surowców strategicznych, krytycznych i kluczowych w krajach rozwiniętych gospodarczo. Na tym tle przedstawiona jest wstępna propozycja metodyki identyfikacji surowców kluczowych dla polskiej gospodarki, w zależności od dwóch przesłanek, tj. znaczenia surowca ze względu na jego źródła i podaż krajową oraz znaczenia surowca pod względem wielkości jego zużycia w krajowej gospodarce. Dzięki zaproponowanej metodyce utworzono wstępną listę 19 surowców kluczowych dla polskiej gospodarki, z których 7 jest niemal całkowicie deficytowych, a 10 surowców ma charakter surowców pochodzących głównie ze źródeł krajowych.
Since 2013, Ministry of Economy of the Republic of Poland, in consultation with other ministries, is working on coherent document "Action Plan for Polish security in relation to non-energy raw materials". Among its activities, preparation of the list of the key mineral raw materials for the domestic economy is planned, according to similar solutions adopted at EU level and proposed in various EU countries. The paper presents various definitions of strategic minerals, critical minerals and key minerals in various developed countries. On this basis, authors present preliminary proposal of methodology of identification of key minerals for Polish economy, depending on two conditions: minerals importance because of their significant domestic sources and supply, and minerals importance because of their significant consumption in domestic economy. Thanks to proposed methodology, preliminary list of 19 key minerals for domestic economy was prepared, including 7 completely deficient minerals and 10 minerals coming mainly from domestic sources.

Źródło:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2014, 88; 59-79
2080-0819

Pojawia się w:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN

Dostawca treści:

Biblioteka Nauki

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Tytuł:

Monazite-bearing post processing wastes and their potential economic significance
Odpady monacytonośne i ich potencjalne znaczenie gospodarcze

Autorzy:

Zglinicki, Karol
Szamałek, Krzysztof
Konopka, Gustaw

Powiązania:

https://bibliotekanauki.pl/articles/216834.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

Bangka Island
mineral tailing
monazite
REE minerals
industrial minerals
processing of minerals
wyspa Bangka
odpady przeróbcze
monacyt
REE

Opis:

During the geological prospecting works conducted in 2013 on Bangka Island (Indonesia), high monazite content was identified in the wastes produced during processing of cassiterite deposits. Monazite, among 250 known minerals containing REE, is one of the most important minerals as primary source of REE. The monazite content in this waste is up to 90.60%. The phase composition of the investigated tailing proves that the sources of minerals accompanying the placer sediments tin mineralization are granitoids. The tailing is composed of numerous ore minerals, including monazite, xenotime, zircon, cassiterite, malayaite, struverite, aeschynite-(Y), ilmenite, rutile, pseudorutile and anatase. Monazite grains belong to the group of cerium monazite. Its grains are characterized by high content of Ce₂O₃ 27.12–33.50 w t.%, La₂O₃ up to 15.46 w t.%, Nd₂O₃ up to 12.87%. The total REE₂O₃ + Y content ranges from 58.18 to 65.90 wt.%. Monazite grains observations (SEM-BSE) revealed the presence of porous zones filled with fine phases of minerals with U and Th content. The radiation intensity of ²³²Th is A_Th = 340 ± 10 Bq and ²³⁸A_U = 114 ± 2 Bq. High content of monazite and other REE minerals indicates that tailing is a very rich, potential source of REEs, although the presence of radioactive elements at the moment is a technological obstacle in their processing and use. The utilization of monazite bearing waste in the Indonesian Islands can be an important factor for development and economic activation of this region and an example of the good practice of circular economy rules.
W trakcie geologicznych prac prospekcyjnych prowadzonych w 2013 roku na indonezyjskiej wyspie Bangka stwierdzono wysokie zawartości monacytu w odpadach powstałych po przeróbce osadów kasyterytonośnych. Monacyt jest jednym z najważniejszych pierwotnych źródeł REE wśród 250 znanych minerałów zawierających REE. Zawartość monacytu w badanym odpadzie wynosi do 90,60%. Skład fazowy badanych odpadów wskazuje, że źródłem minerałów towarzyszących w cynonośnych złożach okruchowych były granitoidy. W składzie odpadu przeróbczego, metodą XRD zidentyfikowano obecność licznych minerałów złożowych, wśród nich: monacyt, ksenotym, cyrkon, kasyteryt, malayait, strüveryt, aeschynit-(Y), ilmenit, rutyl, pseudorutyl i anataz. Badania składu chemicznego ziaren monacytu z użyciem EPMA ujawniły, że należy on do grupy monacytu cerowego. Jego ziarna cechują się wysoką zawartością Ce₂O₃ 27,12–33,50% wt., La₂O₃ do 15,46% wt., Nd₂O₃ do 12,87%. Całkowita zawartość REE₂O₃ + Y mieści się w zakresie od 58,18 do 65,90% wt. Obserwacje ziaren monacytu (BSE) ujawniły w nich obecność stref porowatych wypełnionych drobnymi fazami minerałów z udziałem U oraz Th. Aktywność promieniotwórcza ²³²Th wynosi ATh = 340 ± 10 Bq, a ²³⁸U = 114 ± 2 Bq. Wysoka zawartość monacytu oraz innych minerałów nośników REE wskazuje, że odpad przeróbczy stanowi bardzo bogate, potencjalne źródło pierwiastków ziem rzadkich, choć zawartość pierwiastków promieniotwórczych stanowi obecnie przeszkodę technologiczną w ich przetwarzaniu i wykorzystaniu. Wykorzystanie monacytonośnych odpadów z wysp Indonezji może być ważnym czynnikiem rozwoju i aktywizacji gospodarczej tego regionu oraz przykładem dobrej praktyki stosowania zasad gospodarki o obiegu zamkniętym.

Źródło:

Gospodarka Surowcami Mineralnymi; 2020, 36, 1; 37-58
0860-0953

Pojawia się w:

Gospodarka Surowcami Mineralnymi

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Leczenie żywieniowe depresji
Nutritional treatment of depression

Autorzy:

Majkutewicz, Paulina
Tyszko, Piotr
Okręglicka, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/551627.pdf

Data publikacji:

2014

Wydawca:

Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych

Tematy:

depression
diet
vitamins
minerals

Opis:

Wypierana latami przez przemysł farmaceutyczny niefarmakologiczna forma kuracji żywnością obecnie ponownie znajduje swoje zastosowanie we współczesnej terapii chorób o podłożu psychicznym. Obserwuje się ograniczone możliwości i sposoby ich leczenia, dlatego obecnie można zauważyć wzrost zainteresowania alternatywnymi formami leczenia tych schorzeń. Sugeruje się istnienie związku między niedoborami żywieniowymi, rozpowszechnieniem typowej diety zachodniej oraz odmiennością przebiegu niektórych procesów metabolicznych (w tym wzmożony proces oksydacyjny) a wystąpieniem chorób o podłożu psychicznym. Nie są jednak znane dokładne przyczyny wzrostu zachorowania na te zaburzenia w ostatnich latach. Brak optymizmu w prognozach dotyczących liczby nowych diagnoz zmusza do podjęcia skutecznych działań zapobiegawczych oraz opracowania nowej strategii leczenia. Sugeruje się, że współczesna dieta deficytowa w składniki odżywcze – głównie witaminy i sole mineralne – a obfitująca w cukier, nasycone kwasy tłuszczowe oraz nienasycone kwasy tłuszczowe typu trans i omega-6, może mieć wpływ na wzrost zachorowania na depresję. Innymi faktorami wpływającymi dodatnio na rozpoznanie zaburzenia jest wystąpienie choroby w rodzinie oraz te pochodzenia socjalnego i środowiskowego. Możliwy pozytywny efekt terapeutyczny mogą wywierać takie składniki, jak: kwasy tłuszczowe omega-3, witaminy z grupy B, tryptofan i inne aminokwasy niezbędne do syntezy neuroprzekaźników oraz cynk. Indywidualnie dobrana dieta powinna mieć swoje uzasadnienie i być prowadzona pod opieką specjalisty we współpracy z lekarzem rodzinnym. Potrzebne są dalsze badania nad wpływem związków zawartych w żywności na choroby o podłożu psychicznym
Over the years, displaced by the pharmaceutical industry drug-free, nutritional therapy again finds its application in contemporary treatment of psychiatric disorders. There is a limited capacity and possibility of treatment, so now we can see a growing interest in alternative forms of treatment for these diseases. It is suggested that there are associations between nutritional deficiencies, the spread of typical Western diet, the difference in some metabolic processes (including increased oxidative process) and the occurrence of psychiatric disorders. However precise reasons for the increased incidence of these disorders in recent years is not known. No optimistic forecasts for the number of new diagnoses necessitate to take effective preventive measures and to develop new treatment strategies. It is suggested that the modern diet, deficit in nutrients – mainly vitamins and minerals – and rich in sugar, saturated fat and trans and omega-6, may have an impact on developing depression. Other risk factors include depression incidence in the family and those of the social and environmental origin. Possible positive therapeutic effect may have components such as omega-3, B-vitamins, tryptophan and other amino acids required for the synthesis of neurotransmitters, and zinc. Individually selected diet should be justified and should be conducted under the supervision of a specialist in cooperation with Family Doctor. More research is needed on the effects of compounds found in foods on psychiatric illness.

Źródło:

Family Medicine & Primary Care Review; 2014, 1; 48-50
1734-3402

Pojawia się w:

Family Medicine & Primary Care Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Dietary intake of minerals in diets of adults preparing for marathon

Autorzy:

Salomon, Agnieszka
Mandecka, Anna
Różańska, Dorota
Konikowska, Klaudia
Kosendiak, Aureliusz
Regulska-Ilow, Bożena

Powiązania:

https://bibliotekanauki.pl/articles/1055021.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

macronutrients
marathon
micronutrients
minerals

Opis:

The aim of the study was to evaluate the mineral content in the diets of amateurs preparing for a marathon. The examined group consisted of 92 women (W), whose average age was 30.8 ±6.7 years and 66 men (M), whose average age was 33.2 ±6.6 years. The evaluation of the mineral content of the diets of the surveyed people was done using three-day dietary records which included one day of the weekend. The average daily sodium content in the diets of women was 1,952.2 ±729.2 mg, and in the diets of men it was 3,093.1 ±1,063.3 mg whereas potassium content was 3,361.6 ±798.5 mg and 3,900.3 ±982.3 mg respectively. The potassium content of less than 90% of fulfilling the norm was observed in the diets of 84.8% of women and 66.7% of men. The average content of calcium in the diets of women and men amounted to 887.5 ±278.8 mg and 1,162.6 ± 434.3 mg/day respectively. The diets of 30.4% of women and 16.7% of men had insufficient calcium content as compared to the norms. The average daily phosphorus and magnesium content was significantly higher in men than in women (1,374.6 ±348.6 vs 1,823.5 ±473.0 mg and 373.4 ±107.1 vs 423.6 ±108.8 mg). Magnesium intake was insufficient in the diets of 14.1% of women and 28.8% of men. The average daily content of iron, zinc and copper in the group of women was: 12.1 mg, 10.1 mg and 1.4 mg, while in the diets of men respectively 14.8 mg, 13.5 mg and 1.5 mg. The highest percentage of diets not fulfilling the norm was found for calcium and potassium in women, and potassium and magnesium for men.

Źródło:

Central European Journal of Sport Sciences and Medicine; 2017, 18, 2; 23-32
2300-9705
2353-2807

Pojawia się w:

Central European Journal of Sport Sciences and Medicine

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:

The role of balanced supplementation in diet of age-related macular degeneration patients
Rola zbilansowanej suplementacji w diecie chorych ze zwyrodnieniem plamki związanym z wiekiem

Autorzy:

Kusz vel Sobczuk, Iwona
Święch, Anna

Powiązania:

https://bibliotekanauki.pl/articles/1927974.pdf

Data publikacji:

2021

Wydawca:

Medical Education

Tematy:

AMD
carotenoids
minerals
vitamins

Opis:

Aim: The aim of the article was to discuss the role of balanced supplementation in diet of age-related macular degeneration patients. Methods: This review was carried out using comprehensive and systematic literature reports on the role of supplementation of vitamin D, vitamin C, vitamin E, vitamin B6, vitamin B12, zinc, lutein, zeaxanthin, omega-3 acid and folic acid in the prevention of AMD. Results: Vitamins, minerals and carotenoids are essential for the proper retinal function over an inflammation and immune response modulation. Conclusions: Vitamins, minerals and carotenoids discussed in the article have anti-inflammatory and antioxidative properties in the management of AMD progression. Accordingly, it is relevant to assure the appropriate level of these nutrients in a diet of AMD patients.
Cel: Celem pracy było omówienie roli zbilansowanej suplementacji w diecie chorych ze zwyrodnieniem plamki związanym z wiekiem (AMD, age-related macular degeneration). Metody: Dokonano przeglądu piśmiennictwa z ostatnich lat dotyczącego roli witamin: D, C, E, B6, B12, cynku, luteiny, zeaksantyny, kwasu omega-3 oraz kwasu foliowego w prewencji AMD. Wyniki: Witaminy, składniki mineralne i karotenoidy są niezbędne do prawidłowego funkcjonowania siatkówki, ponieważ modulują odpowiedź zapalną i immunologiczną. Wnioski: Omówione w pracy witaminy, minerały oraz karotenoidy mają właściwości przeciwzapalne oraz przeciwutleniające, dzięki czemu zmniejszają ryzyko progresji AMD. W związku z powyższym należy zapewnić właściwe stężenie tych substancji w diecie pacjentów z AMD.

Źródło:

OphthaTherapy; 2021, 8, 1; 19-25
2353-7175
2543-9987

Pojawia się w:

OphthaTherapy

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:

Comparative assessment of mineral metabolism indices change for experimental animals after dental implantation with different treatment methods

Autorzy:

Shevela, T. L.
Pohodenko-Chudakova, I. O.

Powiązania:

https://bibliotekanauki.pl/articles/284450.pdf

Data publikacji:

2008

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów

Tematy:

minerals
metabolism
dental implementation

Źródło:

Engineering of Biomaterials; 2008, 11, no. 77-80; 12-13
1429-7248

Pojawia się w:

Engineering of Biomaterials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Nowa metodyka wyznaczania surowców kluczowych, strategicznych i krytycznych dla polskiej gospodarki
New methodology for designation of key, strategic and critical minerals for the Polish economy

Autorzy:

Galos, Krzysztof
Lewicka, Ewa
Burkowicz, Anna
Guzik, Katarzyna
Kamyk, Jarosław
Kot-Niewiadomska, Alicja
Szlugaj, Jarosław

Powiązania:

https://bibliotekanauki.pl/articles/2076123.pdf

Data publikacji:

2021

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

surowce kluczowe
surowce strategiczne
minerały krytyczne
bezpieczeństwo surowcowe
polityka surowcowa
key minerals
strategic minerals
critical minerals
mineral security
mineral policy

Opis:

The paper presents a proposal for methodology of designation of the key, strategic and critical minerals, important for the mineral security of Poland. The authors proposed a comprehensive methodology for analysis of 148 individual minerals. When determining the key minerals, a criterion of average value of their annual consumption in Poland in the last decade (2009-2018) was adopted. This approach also regards to the general tendency of consumption of a given mineral and the net import reliance index. To determine strategic minerals, a two-stage analysis was performed, i.e. the identification of potentially strategic minerals that are indispensable for the sectors defined as crucial for the country’s economic security (based on an expert assessment), and – from among them – establishment of the list of strategic minerals on the basis of criteria of the average consumption value in recent years and the net imports reliance. For the identification of critical minerals, the methodology developed for the European Union with some significant modifications was adopted: all the minerals previously classified as key and/or strategic were granted the status of high economic importance in Poland, with disregarding of EU’s evaluation of the value of economic importance (EI) indicator. The second EU index – the supply risk index (SR) – for the determination of the critical minerals for Poland – was slightly reduced from 1.0 to 0.9. Based on the analysis conducted, three lists comprising 42 key, 24 strategic and 17 critical minerals indispensable for the Polish economy development were proposed. Identification of these minerals is of fundamental importance for further works on the Mineral Policy of Poland.

Źródło:

Przegląd Geologiczny; 2021, 69, 10; 654--665
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:

Petrology of nepheline syenite pegmatites in the Oslo Rift, Norway: Zr and Ti mineral assemblages in miaskitic and agpaitic pegmatites in the Larvik Plutonic Complex

Autorzy:

Andersen, Tom
Erambert, Muriel
Larsen, Alf Olaf
Selbekk, Rune S.

Powiązania:

https://bibliotekanauki.pl/articles/127623.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Mineralogiczne

Tematy:

alkaline rocks
nepheline syenite pegmatite
agpaitic rocks
zirconium minerals
titanium minerals
Oslo Rif

Opis:

Agpaitic nepheline syenites have complex, Na-Ca-Zr-Ti minerals as the main hosts for zirconium and titanium, rather than zircon and titanite, which are characteristic for miaskitic rocks. The transition from a miaskitic to an agpaitic crystallization regime in silica-undersaturated magma has traditionally been related to increasing peralkalinity of the magma, but halogen and water contents are also important parameters. The Larvik Plutonic Complex (LPC) in the Permian Oslo Rift, Norway consists of intrusions of hypersolvus monzonite (larvikite), nepheline monzonite (lardalite) and nepheline syenite. Pegmatites ranging in composition from miaskitic syenite with or without nepheline to mildly agpaitic nepheline syenite are the latest products of magmatic differentiation in the complex. The pegmatites can be grouped in (at least) four distinct suites from their magmatic Ti and Zr silicate mineral assemblages. Semiquantitative petrogenetic grids for pegmatites in log aNa2SiO5 – log aH2O – log aHF space can be constructed using information on the composition and distribution of minerals in the pegmatites, including the Zr-rich minerals zircon, parakeldyshite, eudialyte, låvenite, wöhlerite, rosenbuschite, hiortdahlite and catapleiite, and the Ti-dominated minerals aenigmatite, zirconolite (polymignite), astrophyllite, lorenzenite, titanite, mosandrite and rinkite. The chemographic analysis indicates that although increasing peralkalinity of the residual magma (given by the activity of the Na2Si2O5 or Nds component) is an important driving force for the miaskitic to agpaitic transition, water, fluoride (HF) and chloride (HCl) activity controls the actual mineral assemblages forming during crystallization of the residual magmas. The most distinctive mineral in the miaskitic pegmatites is zirconolite. At low fluoride activity, parakeldyshite, lorenzenite and wöhlerite are stable in mildly agpaitic systems. High fluorine (or HF) activity favours minerals such as låvenite, hiortdahlite, rosenbuschite and rinkite, and elevated water activity mosandrite and catapleiite. Astrophyllite and aenigmatite are stable over large ranges of Nds activity, at intermediate and low water activities, respectively.

Źródło:

Mineralogia; 2013, 44, 3/4; 61-98
1899-8291
1899-8526

Pojawia się w:

Mineralogia

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:

The Cyclops Mountains Massif (New Guinea, Indonesia) as the provenance area for metal-bearing shelf sediments from the Carolinian Sea

Autorzy:

Zglinicki, Karol
Szamałek, Krzysztof

Powiązania:

https://bibliotekanauki.pl/articles/2059672.pdf

Data publikacji:

2020

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

continental shelf sediments
Cyclops Mountains
New Guinea
heavy minerals
geological prospection
marine minerals

Opis:

In 2009, on the initiative of PT Halmahera Perkasa the “Jayapura” exploration project was carried out in Indonesia. As part of this project, exploration of the sea bottom in the northern coast of New Guinea was carried out over a distance of ~45 km. The suction dredge collected 59 samples of loose sediments from the shelf bottom surface of the Carolinian Sea (to a depth of 60 m below the sea-floor). The extracted samples are usually poorly and moderately sorted sands (5 samples), medium-grained sands (21 samples), and fine-grained sands (33 samples). The sand composition shows, among others, a wide spectrum of heavy minerals of ultra-mafic (Cr-garnet, chromium spinel, Mg-olivine) and metamorphic (epidote, clinochlore, amphibole, titanite) origin. The content of heavy minerals in the sediments is up to 54.77 wt.%. It was found that the source of heavy fraction in the eastern and western parts of the coast is the rock of the ophiolite series building the Cyclops Mountains Massif. The mineral composition of sediments from the central coastal zone corresponds to the types of rocks building the metamorphic core of the Cyclops Mountains (amphibolite, gneisses, andesite). Three mineral-geochemical subprovinces were determined on the basis of analyses of heavy mineral decomposition and chemical analyses of sediments. Shelf sediment from the eastern part of the coast is characterized by an increased content of strategic metals (Ni up to 3560, W up to 3130 and Co up to 142 ppm). In the central zone, the V content increases up to 244 ppm and the Ag content up to 5 ppm. In the shelf sediments there is a strong depletion in the REE.

Źródło:

Geological Quarterly; 2020, 64, 2; 480--491
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:

Study of the Variations in the Vertical and Horizontal Distribution of Heavy Sand Minerals in the Hilla River Sediments

Autorzy:

Hameed, Iman A.
Rahman, Haleema Abdul Jabbar Abdul
Anmar, Alsaadi

Powiązania:

https://bibliotekanauki.pl/articles/27323812.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

sediment
heavy minerals
specific gravity

Opis:

This study was conducted to investigate the effect of the Hilla River sediments on the heterogeneity of the distribution of heavy sand minerals for the fine and very fine sand classes as well as for the surface and subsurface layers. The results showed that the heavy sand minerals that were determined according to the specific gravity of each mineral and the specific gravity of the particles of minerals identified in the soils under study ranged between (2.5–4.5) and were divided into four groups in terms of the specific gravity. The first group included each of the minerals (Mica and Chlorite) of low specific gravity, while the second group contains (Pyroxene, Amphibole, Epidote Group). The third group includes minerals (Tourmaline and Garnet, Staurolite and Kyanite) and the two groups are classified as minerals of medium-specific gravity; in turn, the fourth group contains minerals of high specific gravity, namely (Zircon, Rutile and Opaques). As a result, the most important factors affecting the sedimentation, sorting and sedimentation processes are the conveyor’s speed, load capacity, the size of the separation particles and their specific gravity. The complete mismatch of the horizontal distribution of the minerals of one group is due to the varying ranges of the specific gravity of the minerals within the general range of specific gravity.

Źródło:

Journal of Ecological Engineering; 2023, 24, 7; 318--330
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Mineralogia hałd wietrzeniowych złoża Miedzianka (Góry Świętokrzyskie)
Mineralogy of weathering heaps in the Miedzianka deposits (Holy Cross Mountains)

Autorzy:

Swęd, M.
Urbanek, P.
Krechowicz, I.
Dworczak, P.
Wiecka, P.
Mleczak, M.
Tobys, P.

Powiązania:

https://bibliotekanauki.pl/articles/2075336.pdf

Data publikacji:

2015

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

minerały
wietrzenie
Miedzianka
minerals
weathering

Opis:

The paper presents new data on the weathering zone in Miedzianka, Holy Cross Mountains (Poland), including macroscopic, microscopic and chemical investigation, using scanning electron microscope (SEM) with energy dispersive spectrum (EDS). The deposit contains sulphide mineralization (e.g. chalcopiryte, chalcocite), and carbonates with hydroxyl (malachite and azurite) in the weathering zone. Additionally, arsenic – bearing sulphosalts of the tennantite – tetrahedrite group and Ba-sulphate were found. Moreover, cracks are observed on a macro- and micro-scale, filled with new minerals that formed during the weathering.

Źródło:

Przegląd Geologiczny; 2015, 63, 6; 363--370
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Influence of season and breed on serum mineral levels in sheep

Autorzy:

Autukaitė, J.
Poškienė, I.
Juozaitienė, V.
Undzėnaitė, R.
Antanaitis, R.
Žilinskas, H.

Powiązania:

https://bibliotekanauki.pl/articles/2087294.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sheep
breed
minerals
biochemistry
season

Źródło:

Polish Journal of Veterinary Sciences; 2020, 23, 3; 473-476
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Pochodzenie materii meteorytowej
The origin of meteorite constituents

Autorzy:

Kozłowski, Szymon

Powiązania:

https://bibliotekanauki.pl/articles/2195009.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Meteorytowe

Tematy:

elements
minerals
dust
meteorites
cosmology

Opis:

In this article, I briefly review the history of the elements in the Universe, starting from cosmic inflation and ending at the creation of elements and minerals that we find in meteorites.

Źródło:

Acta Societatis Metheoriticae Polonorum; 2023, 14; 100-113
2080-5497

Pojawia się w:

Acta Societatis Metheoriticae Polonorum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Uwarunkowania rozwoju górnictwa skalnego i przeciwdziałania sytuacjom kryzysowym
Conditions of the rock mining development and counteraction of the crisis situations

Autorzy:

Bednarczyk, J.

Powiązania:

https://bibliotekanauki.pl/articles/171007.pdf

Data publikacji:

2013

Wydawca:

Poltegor-Instytut Instytut Górnictwa Odkrywkowego

Tematy:

górnictwo skalne
rock minerals mining

Opis:

W artykule przedstawiono wybrane problemy rozwoju górnictwa skalnego, które ujawniły się w jego największym rozwoju w latach 2002-2011. Wskazano na możliwości rozwojowe i spodziewane ograniczenia związane z występującym spowolnieniem rozwoju gospodarczego w latach 2012 i dalszych nawiązując do wstępnych planów średnio- i perspektywicznego rozwoju krajowej sieci transportowej i budownictwa. Wskazano przeciwdziałania sytuacjom kryzysowym, które wywoływane są zmniejszeniem zapotrzebowania na wytwarzaną produkcję i zagrażają istnieniu podmiotów gospodarczych.
In the article chosen problems of the rock minerals mining development which emerged in its greatest development in 2002-2011 were presented. Development potential and the expected restrictions associated with the economic slowdown in 2012 and predicted in the future were indicated with reference to preliminary plans of the perspective development of the domestic transport network and the construction. Counteractions of the crisis situations connected with reducing the demand for the aggregates were indicated.

Źródło:

Górnictwo Odkrywkowe; 2013, 54, 5-6; 7-20
0043-2075

Pojawia się w:

Górnictwo Odkrywkowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Content of minerals in muscle tissue of diploid rainbow trout (Oncorhynchus mykiss) in freshwater (Derbent Dam) and seawater (The Black Sea)

Autorzy:

Aci, R.
Muderrisoglu, S.
Duran, U.
Shakouri, N.
Ciftci, G.

Powiązania:

https://bibliotekanauki.pl/articles/1192579.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

freshwater
rainbow trout
seawater
minerals.

Opis:

Trouts are commonly farmed in many countries of the world. Minerals are required for normal life processes, and fish need these inorganic elements. Fish may derive these minerals from a diet and from ambient water. This study aimed to research differences in some of the mineral values in muscle tissues of diploid rainbow trouts (Oncorhynchus mykiss) cultured in freshwater and seawater. The study material consisted of twenty diploid rainbow trouts (Oncorhynchus mykiss), ten farmed in seawater and ten farmed in freshwater, with a weight of about 0.8-1 kg and average age of 17-19 months. Supernatant was prepared from muscle tissues of the fish. Concentrations of major minerals (Na, K, Ca, Mg, Cl, P) were investigated in supernatant from fish muscle tissues with an autoanalyzer. pH temperature, oxygen amount, salinity amount and saturation ratio of the trouts were found to be 8.40, 12°C, 9.57 mg dl-1, 18‰, 88.77% for seawater and 7.60, 11°C 7.40 mg dl-1, 0.68 ‰, 67.26% for freshwater fish. It was found that P, K and Mg levels in the muscle tissue of diploid rainbow trouts (Oncorhynchus mykiss) farmed in seawater were statistically significantly higher than in those farmed in freshwater (P<0.001), and Ca levels in trouts farmed in seawater were also higher than in those farmed in freshwater, although not statistically significantly different. It was determined that Na and Cl levels were slightly higher in rainbow trouts farmed in freshwater than in those farmed in seawater, but it was not a statistically significant difference (P>0.05). This study showed that concentrations of minerals in trout muscle tissue can be affected by changes in water quality. It was concluded that muscle tissue of diploid rainbow trouts (Oncorhynchus mykiss) farmed in seawater is a better source of minerals in human diet than trouts farmed in freshwater.

Źródło:

Journal of Elementology; 2020, 25, 4; 1375-1384
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

The content of selected elements in common flax seeds (Linum usitatissimum L.) depending on the cultivar and weather conditions

Autorzy:

Kluza-Wieloch, M.
Waskiewicz, A.
Bednorz, L.
Nowinska, R.

Powiązania:

https://bibliotekanauki.pl/articles/1192389.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

linseed
minerals
cultivars
weather conditions

Opis:

The aim of the study was to evaluate the effect of different cultivars and weather conditions on the content of minerals: K, Na, Mg, Ca, Zn, Cu, Mn and Fe in linseed (Linum usitatissimum L.). In total, 11 common flax cultivars of four utility types were analysed. Field experiments were carried out in Poznań (Poland) between 2003 and 2005 and between 2008 and 2014. The study showed that the chemical composition of flax seeds was determined by differences between cultivars, the weather conditions and the cultivar-year interactions. The seeds of the Alba cultivar, representing the fibre type, had the highest content of all the elements measured in our study. The results demonstrated that none of the four types of utility cultivars was distinguished by a particularly high content of minerals in the seeds. Hence, the seeds of the flax cultivars of all the types used in our study may be used as sources of valuable macro- and microelements. The content of some minerals in the seeds of different flax cultivars was significantly correlated with the average temperatures and the average rainfall during the research period. The concentrations of calcium and zinc were not correlated with the weather conditions. The content of four elements (Na, Mg, Cu, Fe) was negatively correlated with temperature, whereas the content of potassium was positively correlated with this factor. Concentrations of three elements (K, Na, Fe) were negatively correlated with rainfall, whereas the concentration of manganese was positively correlated with this factor.

Źródło:

Journal of Elementology; 2020, 25, 3; 1029-1044
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

The application of modified layered double hydroxides in selective catalytic reduction of nitrogen oxides by ammonia (NH3-SCR)

Autorzy:

Szymaszek, Agnieszka
Motak, Monika
Samojeden, Bogdan

Powiązania:

https://bibliotekanauki.pl/articles/778916.pdf

Data publikacji:

2020

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Yerba
antioxidant activity
infusions
minerals

Opis:

Selective catalytic reduction with ammonia (NH₃-SCR) is very efficient DeNOx technique. According to some problems with the commercial catalyst, novel one should be prepared. Hydrotalcites are potential precursors of the new catalysts of NH₃-SCR. In this paper, several attempts to apply these materials in NH₃-SCR are presented.

Źródło:

Polish Journal of Chemical Technology; 2020, 22, 1; 61-67
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Effect of the Yerba mate (Ilex paraguariensis) brewing method on the content of selected elements and antioxidant potential of infusions

Autorzy:

Janda, Katarzyna
Jakubczyk, Karolina
Łukomska, Agnieszka
Baranowska-Bosiacka, Irena
Rębacz-Maron, Ewa
Dec, Karolina
Kochman, Joanna
Gutowska, Izabela

Powiązania:

https://bibliotekanauki.pl/articles/779918.pdf

Data publikacji:

2020

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Yerba
antioxidant activity
infusions
minerals

Opis:

Yerba mate is a source of biologically active substances. The aim was to determine whether the place of origin of Yerba and the brewing method have any influence on the levels of Ca, Mg and Fe and antioxidant activity of infusions. Samples were steeped in cold water (25^o C) and hot water (three consecutive infusions with 85^o C water). Infusions had a high antioxidant activity and high Mg level. The levels of elements and the antioxidant activity were influenced by the brewing method. There were no significant differences in the examined parameters depending on the country of origin. The results on the levels of elements and the antioxidant activity indicate that the most efficient brewing method was infusion in hot water. The highest levels of elements were found in first infusions, with the highest antioxidant activity in the third infusions.

Źródło:

Polish Journal of Chemical Technology; 2020, 22, 1; 54-60
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Comparison of nutrient content in bulbs of Japanese red spider lily (Lycoris radiata) and golden spider lily (Lycoris aurea), ornamental and medicinal plants

Autorzy:

Salachna, Piotr
Piechocki, Rafał

Powiązania:

https://bibliotekanauki.pl/articles/1076649.pdf

Data publikacji:

2019

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Lycoris
components
geophytes
medicinal plants
minerals

Opis:

Plants of the genus Lycoris in Japan are of importance in culture and religion; they are used as ornamental and medicinal plants. Two species are particularly attractive: Lycoris aurea with yellow flowers and Lycoris radiata with red flowers. Both species show a wide biological activity mainly due to the high content of alkaloids. The aim of the study was to compare the mineral composition of Lycoris aurea and Lycoris radiata bulbs. The analyses were carried out on bulbs obtained after the end of flowering. There were significant differences between the tested species in the content of both macronutrients and micronutrients. The bulbs of Lycoris radiata contained significantly more nitrogen, potassium, magnesium, zinc, manganese and iron compared to Lycoris aurea bulbs. In turn, more boron was found in Lycoris aurea bulbs. There were no differences between species in terms of phosphorus, calcium and copper contents in the bulbs. In summary, both species have different nutritional requirements. Lycoris aurea bulbs have the highest nitrogen and magnesium content, while Lycoris radiata bulbs contain the highest amounts of nitrogen and potassium. Bulbs of both species are a rich source of iron and zinc.

Źródło:

World News of Natural Sciences; 2019, 26; 72-79
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Na-montmorillonite modified with ammonium salts and azobenzene as a photoactive nanomaterial

Autorzy:

Koteja, A.
Matusik, J.

Powiązania:

https://bibliotekanauki.pl/articles/184535.pdf

Data publikacji:

2016

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

inorganic solid structures
organic molecules
minerals

Opis:

Modification of inorganic solid structures (e.g. minerals) with organic molecules is a constantly developed topic in material sciences. The organic functionalization leads to the production of new materials with integrated properties of both the organic and inorganic component. In the presented study we have modified a Na-montmorillonite with alkylammonium surfactants and subsequently azobenzene, in order to obtain a nanomaterial that shows response to UV radiation. Azobenzene is a photoswitchable organic molecule capable to change its conformation upon UV radiation from the trans- to cis-azobenzene isomer. This reaction is coupled with a change of the molecules shape and dimensions (Klajn 2010). The montmorillonite is a layered aluminosilicate that serves as an excellent host structure for organic guest species. Due to the net negative layer charge it shows the ability to swell and to exchange the originally present interlayer cations. These properties allow the intercalation of bulk organic molecules and to control their arrangement. Much attention has been paid to the possibility of transferring the photoswitching ability of organic molecule into the motion of the whole organo-mineral structure (Heinz et al. 2008). Such nanoswitch is particularly appealing as it is controlled with radiation – remotely and at a precise location. The efficiency of a synthesized nanoswitch depends on an accurate selection of the host and guest component. The target of this study to test a series of organic surfactants and to establish a modification pathway that leads to obtaining a material most promising in the view of its photoresponsive behavior. The montmorillonite modification was performed in a two-step procedure, as the direct intercalation of a nonionic azobenzene is not possible. First, the Na-montmorillonite (denoted SWy) was ion-exchanged with trimethylalkylammonium cations abbreviated C n and benzyldimethylalkylammonium cations – BC n , where n refers to the number of carbon atoms in the alkyl chain and is equal to 12, 14 or 16. In the second step the organo-montmorillonites were reacted with azobenzene (AzBz) for 24 h at 120°C in a hermetically closed teflon vessel. The yellowish products were characterized with the X-Ray diffraction (XRD), the infrared spectroscopy (FTIR) and CHN elemental analysis. In all cases the intercalation of the ammonium cation caused an increase of the montmorillonites basal spacing ( d 001 ). The d 001 values were equal to 16.4 Å, 18.2 Å and 20.5 Å for SWy-C 12 , SWy-C 14 and SWy-C 16 , respectively. The samples modified with the BC n cations showed ~1.5 Å larger basal spacing, due to the presence of the benzyl group in the intercalated molecule. A linear relationship was observed between the d 001 value and the alkyl chain length of the introduced salts. This suggests that the organic cations formed paraffin-type aggregates in the interlayer (Ogawa et al. 1999) where the molecules are inclined to the layer surface. The FTIR spectra of modified SWy sample showed intense bands corresponding to CH 2 vibration modes. Along with the increasing alkyl chain length the CH 2 stretching bands shifted towards lower energies. This is an effect of growing packing density of alkylammonium molecules in the interlayer (He et al. 2004) and it is coupled with straightening of the alkyl chains due to transformation of disordered gauche conformer to the ordered all-trans conformer (Vaia et al. 1994). It can be concluded that the longer alkyl chains (C 16 and BC 16 ) form more ordered, solid-like aggregates in the interlayer space. The molar content of organic molecules was calculated basing on the CHN elemental analysis. The amount of intercalated alkylammonium cations was nearly equal to the cation exchange capacity (CEC) of montmorillonite – 88.9 meq/100 g. The reaction with azobenzene was most effective for montmorillonite modified with the alkylammonium cations having the longest chains as confirmed by the XRD patterns. The d 001 values of SWy-C 16 and SWy-BC 16 samples after reaction with AzBz increased to 36.9 Å and 35.9 Å, respecively. Well resolved and intense (001) peaks as well as the presence of the 2 nd and 3 rd order reflections indicated a highly ordered structure of these intercalates. On the contrary, diffraction peaks were less resolved and broadened for samples prepared with the shorter C 12 , C 14 , BC 12 and BC 14 molecules after reaction with AzBz. Based on these results, it is assumed that the long chain alkylammonium ions are more effective surfactants for the further intercalation of azobenzene into the montmorillonites interlayer space. The obtained highly ordered structures are promising materials for application as photo-actuated nanoswitches.

Źródło:

Geology, Geophysics and Environment; 2016, 42, 1; 87-88
2299-8004
2353-0790

Pojawia się w:

Geology, Geophysics and Environment

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Kosmetyki mineralne
Mineral cosmetics

Autorzy:

Pawlikowski, M.
Hreśka, M.

Powiązania:

https://bibliotekanauki.pl/articles/343958.pdf

Data publikacji:

2018

Wydawca:

nakł. Maciej Pawlikowski

Tematy:

kosmetyka
minerały
zdrowie
cosmetics
minerals
Heath

Opis:

Od tysiącleci minerały samodzielnie lub w mieszaninach używane były przez ludzi jako lekarstwa i kosmetyki. Przedstawione badania nawiązują do tradycji stosowania minerałów w nowoczesnej kosmetologii.
Minerals or mixtures containing minerals were used during thousands years as cosmetics and or medicines. Presented investigation refer to tradition of use of minerals in modern cosmetology.

Źródło:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering; 2018, 24; 1-4
1689-6742

Pojawia się w:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Właściwości termodynamiczne minerałów z szeregu piromorfit - mimetyt

Autorzy:

Flis, J.

Powiązania:

https://bibliotekanauki.pl/articles/344088.pdf

Data publikacji:

2007

Wydawca:

nakł. Maciej Pawlikowski

Tematy:

minerały
właściwości termodynamiczne
minerals
thermodynamic properties

Źródło:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering; 2007, T. 4 spec. ed. [2]; 1-4
1689-6742

Pojawia się w:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

57Fe Mössbauer spectroscopy of annealed metamict davidite

Autorzy:

Malczewski, D.
Frąckowiak, J.
Galuskin, E.

Powiązania:

https://bibliotekanauki.pl/articles/148337.pdf

Data publikacji:

2007

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

davidite
metamict minerals
recrystallization
Mössbauer spectroscopy

Opis:

This paper reports preliminary results of 57Fe Mössbauer spectroscopy and X-ray diffraction (XRD) studies of metamict davidite samples (La,Ce,Ca,Th)(Y,U,Fe)(Ti,Fe,Mn)20(O,OH)38 after high temperature annealing in an argon atmosphere. The Mössbauer spectra show a gradual decrease of quadrupole splitting and line width values of an Fe3+ doublet with increasing annealing temperature. Rather unexpected feature of these spectra for an Fe2+ doublet is a considerable increase of the line width with progressive crystallinity and a simultaneous decrease of both quadrupole splitting and isomer shift values. Changes of the hyperfine parameters as a function of the annealing temperature appeared as sensitive indicators of the thermal recrystallization process of metamict davidite similar to metamict silicates.

Źródło:

Nukleonika; 2007, 52, supl. 1; 81-84
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Potassium response in some Malawi soils

Autorzy:

Lakudzala, D. D.

Powiązania:

https://bibliotekanauki.pl/articles/412437.pdf

Data publikacji:

2013

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

potassium (K)
kaolinite
Malawi soils
minerals

Opis:

Potassium (K) response curves were generated for some Malawi soils using four different rates of potassium fertilizer, with grass being used to estimate plant availability. The study was conducted to find the point of maximum response for potassium. The soils were characterized, limed and fertilized with equal amounts of nitrogen. Potassium was applied at four rates: 0.0, 0.1, 0.2 and 0.4 me K/100 cm3 soil. The K treated soils were put in pots and cropped with grass. The grass was harvested six weeks after planting, dried and weighed. In general, addition of potassium resulted in increased growth of grass in all soils, with some soils showing better response than others. For montmorillonitic soils and soils with mixed mineralogy response was linear up to the highest rate of 0.4 me K/100 cm3. Apparently the 0.4 me K/100 cm3 soil was not enough to give maximum yield for these potassium depleted soils. For the kaolinitic soils 0.4 me K/100 cm3 soil was beyond point of maximum response. The variation of response to added potassium in the different soils calls for soil specific fertilizer additions. Smallholder farmers should move from blanket (crop specific) fertilizer recommendations currently being used to crop and soil specific fertilizer recommendations. Basal fertilizer dressings (starter packs) should always contain potassium. Correlation and calibration studies should be conducted to establish a potassium low optimum level for Malawi soils.

Źródło:

International Letters of Chemistry, Physics and Astronomy; 2013, 8, 2; 175-181
2299-3843

Pojawia się w:

International Letters of Chemistry, Physics and Astronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Wybrane aspekty gospodarki surowcami mineralnymi w powiecie kłodzkim
Selected aspects of mineral raw materials management in kłodzko county

Autorzy:

Komandowski, P.
Ślusarczyk, G.

Powiązania:

https://bibliotekanauki.pl/articles/170592.pdf

Data publikacji:

2011

Wydawca:

Poltegor-Instytut Instytut Górnictwa Odkrywkowego

Tematy:

surowce mineralne
Słupiec-Dębówka
raw minerals

Opis:

Artykuł dotyczy wybranych złóż reprezentujących grupę surowcową „Kamienie łamane i bloczne" występujących w powiecie kłodzkim i mających zasadnicze znaczenie wśród magmowych skał wylewnych. Omówiono ich lokalizację wraz z charakterystyką budowy geologicznej i wielkości aktualnych udokumentowanych zasobów. Podano przykłady aktualnie eksploatowanych złóż, opisując wielkość wydobycia, zbyt surowca, a także uwarunkowania zewnętrzne i ograniczenia środowiskowe wpływające na ich funkcjonowanie. Jednym z przykładów jest złoże gabra Słupiec - Dębówka, w którym wydobycie prowadzone jest mniej więcej na stałym poziomie, zbyt surowca, przy wykorzystaniu transportu kolejowego, dotyczy stałych odbiorców i brak jakichkolwiek przeszkód zarówno środowiskowych jak i prawnych. Zakład górniczy ma możliwość zwiększenia wydobycia, które prowadzone jest poza granicami terenów o ograniczeniach środowiskowych. Przewidywana w przyszłości budowa obwodnicy Nowej Rudy - Słupca wyeliminuje problem uciążliwości transportu kołowego dla pobliskiej aglomeracji miejskiej. Zastosowane przez kopalnię rozwiązania technologiczne eksploatacji (minimalny ładunek kruszący, zamknięte ciągi załadowcze, zraszanie składowisk, zamknięty obieg wody technologicznej) korzystnie zminimalizowały wpływ wydobycia na aglomerację miejską Nowej Rudy.
In this article selected deposits of dimesion and crushed stones occured in Kłodzko County were described. Localization, geological characteristic and reserves guantity of these deposits were analyzed. Examples of present worked deposits were given as well as amount of output, raw material sales, external conditions and environmental restrictions. Słupiec-Dębówka gabbro deposit is one of this example. Output in this quarry is about constant and sales of railways transported raw materials based on regular customers. There are no both of environmental and legal restrictions and mining work has a possibility to increase of output which is making beyond environmentally restricted areas. Road by-pass of Nowa Ruda planned in near future will eliminate a problems with effect of wheel transport on nearby agglomeration. Technical solutions of exploitation (minimal charge of explosive, closed belt conveyor flight, spraying the mine dumps, closed technological water cycle) were minimalized inconvinient impact of gabbro quarrying on Nowa Ruda agglomeration.

Źródło:

Górnictwo Odkrywkowe; 2011, 52, 1-2; 100-109
0043-2075

Pojawia się w:

Górnictwo Odkrywkowe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Preliminary results of 57Fe Mössbauer spectroscopy of metamict samarskite after one-hour high temperature annealing in argon

Autorzy:

Malczewski, D.
Grabias, A.

Powiązania:

https://bibliotekanauki.pl/articles/146552.pdf

Data publikacji:

2017

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

samarskite
metamict minerals
Mössbauer spectroscopy
recrystallization

Opis:

The preliminary results of 57Fe Mössbauer spectroscopy and X-ray diffraction (XRD) of fully metamict samarskite dated at ~1500 Ma, which absorbed -dose of 6.5 × 1017 α-decay mg–1, are reported after one-hour annealing at 673, 873, 1173 and 1373 K in argon atmosphere. Metamict minerals contain radioactive elements that degrade their crystal structures over geological time. All the Mössbauer spectra obtained can be fitted to two quadrupole doublets assigned to Fe2+ and Fe3+ in octahedral positions. The relative contribution of Fe2+ (Fe2+/Fe) reaches a minimum of 0.10 at 1173 K.

Źródło:

Nukleonika; 2017, 62, 2; 141-144
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Use of negative ion mass spectrometry for simultaneous determination of sulfur isotope ratios δ33S and δ34S

Autorzy:

Hałas, Stanisław
Pieńkos, Tomasz
Pelc, Andrzej
Wójtowicz, Artur

Powiązania:

https://bibliotekanauki.pl/articles/763353.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej

Tematy:

isotope anomalies
terrestrial minerals
sulfates
sulfides

Opis:

We describe a newly constructed dual inlet system and triple collector for precision study of sulfur isotope anomalies, Δ33S, using negative ion mass spectrometry. SO2 gas is admitted to the ion source where it is ionized ether to SO- or S- by low energy electrons (resonant ionization) and the ion beam is analyzed by a single focusing magnetic analyzer. Another gas which can be used for  δ33S and δ34S analysis by negative ion mass spectrometry  is SF6 on mass spectrum of SF5- ions.

Źródło:

Annales Universitatis Mariae Curie-Skłodowska, sectio AAA – Physica; 2015, 70
0137-6861

Pojawia się w:

Annales Universitatis Mariae Curie-Skłodowska, sectio AAA – Physica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Interaction between sphalerite and pyrite and its effect on surface oxidation of sphalerite

Autorzy:

Yang, B.
Xie, X.
Tong, X.
Lan, Z.
Cui, Y.

Powiązania:

https://bibliotekanauki.pl/articles/109553.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

sphalerite
surface oxidation
minerals interaction
DFT

Opis:

The interaction between sphalerite and pyrite was investigated by dissolution test, X-ray photoelectron spectroscopy (XPS), zeta potential measurement and density functional theory (DFT) calculation. Dissolution tests indicated that sphalerite dissolution was promoted due to the galvanic interaction between sphalerite and pyrite. The Zn2+ ion concentration increased with increasing pyrite content and dissolved time. XPS analysis results demonstrated that a new oxidation product was formed on the sphalerite surface in the presence of pyrite in a pulp. Zeta potential measurements showed that the isoelectric point of sphalerite increased from 3.3 to 5.4 due to galvanic interaction. DFT calculation results suggested that electron transfer from sphalerite to pyrite occurred when they contacted. The Zn 4s and S 3p states of sphalerite lost electrons. The Fe 4p and 4s of pyrite states obtained electrons, and Fe 3d and S 3s states lost a small number of electrons. The surface oxidation of sphalerite was promoted due to the interaction with pyrite, and the collectorless floatability of sphalerite decreased.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 2; 311-320
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Insight into the effect of galvanic interactions between sulfide minerals on the floatability and surface characteristics of pyrite

Autorzy:

Yang, Bo
Tong, Xiong
Xie, Xian
Huang, Lingyun

Powiązania:

https://bibliotekanauki.pl/articles/1448232.pdf

Data publikacji:

2021

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

galvanic interaction
floatability
pyrite
sulfide minerals

Opis:

Complex sulfide ores are usually found as a mixture of various sulfide and gangue minerals, and froth flotation is the predominant method for the selective separation of sulfide minerals. Adherence and contact between sulfide minerals are inevitable during froth flotation, and galvanic interactions between sulfide minerals will occur because of differences in rest potentials. However, the effect of these galvanic interactions on the selective flotation of sulfide minerals have been rarely studied. In this work, the effect of the galvanic interaction between pyrite and sphalerite on the flotation behavior and surface characteristics of pyrite was investigated by micro-flotation tests, collector adsorption tests, electrochemical techniques and XPS (X-ray photoelectron spectroscopy) surface analysis. The micro-flotation tests indicated that the floatability of pyrite decreased in the pH range of 4.0 to 9.5 and increased under strongly alkaline pH conditions (pH > 10) due to the galvanic interaction. The collector adsorption results demonstrated that the adsorption capacity of the collector on the pyrite surface was significantly reduced because of the galvanic interaction between pyrite and sphalerite. The electrochemical measurements revealed that the decrease in the oxidation current of xanthates to dixanthogen was responsible for the decreasing adsorption capacity of the collector on the pyrite surface. The XPS results indicated that the formation of the $S_O_3^{2-}$ oxidation product on the pyrite surface decreased at a strongly alkaline pH due to the galvanic interaction. Therefore, pyrite floatability improved at an alkaline pH. These results consistently showed that the galvanic interaction between pyrite and sphalerite had an important influence on the floatability and surface characteristics of pyrite.

Źródło:

Physicochemical Problems of Mineral Processing; 2021, 57, 2; 24-33
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Polymeric flocculants based on the interfacial characteristics of fine clay minerals : a review

Autorzy:

Zhang, Lianfeng
Min, Fanfei
Wang, Lujun
Shu, Qingdong

Powiązania:

https://bibliotekanauki.pl/articles/2146906.pdf

Data publikacji:

2022

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

clay minerals
interfacial characteristic
polymer, flocculation.

Opis:

Fine clay minerals, found in various industrial effluents, have attracted much attention in recent times. They can form a highly stable suspension in water and increase the complexity of sedimentation for the treatment of wastewater. In the past few decades, the flocculation of fine clay minerals has been significantly improved due to numerous design advancements in the molecular weight, charge density and structure of polymeric flocculants. In this article, the interfacial characteristics and affecting factors of clay minerals are discussed, the design, synthesis and application of synthetic polymers, natural polymers and natural-based grafted polymers are reviewed, as well as the advantages and disadvantages of three types of polymers. The development direction of upgrading existing clay mineral flocculants is proposed based on the interfacial characteristics of clay minerals. Weakening the hydration of clay minerals, altering the manner of molecular interaction and precisely controlling the structure of polymer chains are the design objectives of novel polymeric flocculants.

Źródło:

Physicochemical Problems of Mineral Processing; 2022, 58, 4; art. no. 149652
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Effect of Chromium Picolinate and Chromium Nanoparticles Added to Low- or High-Fat Diets on Chromium Biodistribution and the Blood Level of Selected Minerals in Rats

Autorzy:

Stępniowska, Anna
Juśkiewicz, Jerzy
Tutaj, Krzysztof
Fotschki, Joanna
Fotschki, Bartosz
Ognik, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/2159288.pdf

Data publikacji:

2022-09-05

Wydawca:

Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie

Tematy:

minerals
chromium
nanoparticles
high-fat diet

Opis:

The metabolism of chromium (Cr), calcium (Ca), phosphorus (P), iron (Fe), copper (Cu), and zinc (Zn) is interconnected, and their deficiency or excessive accumulation may lead to various disturbances, including anemia and diabetes. The current research was undertaken to determine whether low-fat or high-fat diets with the Cr(III) addition in the form of picolinate (CrPic) or nanoparticles (CrNPs) have an interactive effect on the retention and accumulation of this element in organs and the content of P, Ca, Fe, Cu and Zn in the blood plasma of rats. The experiment was performed using 48 outbred male Wistar rats fed a low-fat or high-fat semi-purified rat diet with dietary addition of chromium at a dose of 0.3 mg/kg body weight. The obtained results point to the paramount importance of the dietary Cr form on the excretion pattern of this microelement. It has been found that CrNPs were to a greater extent excreted from the rat’s body via urine and feces in comparison to CrPic, as indicated by the values of the Cr retention index (44.4 vs. 65.9%, respectively). The additional dietary Cr, irrespective of its form and diet type, was not accumulated in the analyzed internal organs, i.e. brain, spleen, kidneys, liver, thigh bone, and thigh muscle. It should be stressed that dietary CrPic, unlike CrNPs, added to the high-fat diet adversely reduced plasma concentration of vital minerals in comparison to the levels observed in rats fed the low-fat diet, i.e. Zn (60.5 vs. 69.9 µM), Cu (13.6 vs. 15.7 µM), and P (1.12 vs. 1.30 µM). In turn, the CrNPs, but not CrPic, added to the high-fat diet decreased plasma Fe level (1.41 vs. 2.43 µM).

Źródło:

Polish Journal of Food and Nutrition Sciences; 2022, 72, 3; 229-238
1230-0322
2083-6007

Pojawia się w:

Polish Journal of Food and Nutrition Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Experimenti de la Excelentissima Signora Caterina da Furlji. Katarzyna Sforza i jej sposoby na podkreślenie urody
Experimenti de la Excelentissima Signora Caterina da Furlji. Catherine Sforza and her methods to underline beauty

Autorzy:

Głusiuk, Anna

Powiązania:

https://bibliotekanauki.pl/articles/449939.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie

Tematy:

Catherina Sforza
beauty
recipes
herbs
minerals

Opis:

In 1894, Pier Desiderio Pasolini published notes on the beauty of women written by Catherine Sforza. Unfortunately the original text written by Catherine disappeared in unknown circumstances but in 1522 Lucantonio Cuppano had seen the original and made one copy which was later consulted and published by Pasolini who gave it the tittle Experimenti de la Excelentissima Signora Caterina da Furlji. This writing - next to the work of Metrodora and Trotula of Salerno - is one of the oldest texts written by women, which is preserved for our time. This work shows that Catherine must have received an excellent education as she was interested in medicine, alchemy and property of herbs and minerals. The lecture on her recipes shows that she prepared her cosmetics for herself but she also sent them to others. Her recipes show her knowledge of the property of many herbs and minerals. Probably she thought about publishing her notes as we can find there some easy formulas (for beginners) where it was necessary only to add and mix the products. But there are also more complicated instructions where it was necessary to know, for example the process of distillation etc. Her writings show how in the 15th century women in Italy cared about their beauty and which herbs and minerals to use to make their cosmetics.

Źródło:

Saeculum Christianum. Pismo Historyczne; 2018, 25; 172-183
1232-1575

Pojawia się w:

Saeculum Christianum. Pismo Historyczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Interakcje wyładowania elektryczne - minerały
Inieraction sparks - minerals

Autorzy:

Pawlikowski, M.
Bożęcki, P.

Powiązania:

https://bibliotekanauki.pl/articles/343867.pdf

Data publikacji:

2015

Wydawca:

nakł. Maciej Pawlikowski

Tematy:

minerals
artificial sparks
SEM
minerały
iskry

Opis:

Wykonano eksperymenty polegające na bombardowaniu powierzchni kryształów przez wyładowania elektryczne. Kryształy umieszczono na elektrodzie w specjalnej rurce szklanej. Iskry wytwarzano przy pomocy specjalnego generatora. Powierzchnie kryształów w strefie wyładowań badano przy pomocy mikroskopu skaningowego z przystawką do analiz chemicznych (EDS). Stwierdzono powstawanie w bombardowanej powierzchni kryształów mikro kraterów. Uderzenia iskier spowodowały także w niektórych przypadkach powstanie ziarn czystych metali w pobliżu mikro kraterów.
Interaction minerals artificial sparks were examined using pyrite, galena, hematite an pyrrhotite - bornite were examined using specially constructed generator. The surface of crystals was examines using SEM-EDS after strong bombing by artificial spark. The erosion of surface and formation of micro crater was observed. Moreover activity of sparks led to the formation of new secondary product represented sometime by pure metals.

Źródło:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering; 2015, 20; 1-24
1689-6742

Pojawia się w:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Delaminacja i transformacja morfologii minerałów z grupy kaolinitu

Autorzy:

Matusik, J.

Powiązania:

https://bibliotekanauki.pl/articles/344090.pdf

Data publikacji:

2007

Wydawca:

nakł. Maciej Pawlikowski

Tematy:

minerały
delaminacja
morfologia
minerals
morphology
delamination

Źródło:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering; 2007, T. 4 spec. ed. [2]; 1-2
1689-6742

Pojawia się w:

Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Effect of saccharomyces cerevisiae yeast on milk protein content and composition and serum mineral concentrations in sheep
Wpływ preparatu drożdży Saccharomyces cerevisiae na zawartość białka i jego frakcji w mleku oraz wskaźniki mineralne w surowicy owiec

Autorzy:

Milewski, S.
Sobiech, P.
Zabek, K.
Zarczynska, K.
Antoszkiewicz, Z.
Wielgosz-Groth, Z.

Powiązania:

https://bibliotekanauki.pl/articles/1188048.pdf

Data publikacji:

2012

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

ewes
Saccharomyces cerevisiae
milk proteins
blood minerals

Opis:

Doświadczenie przeprowadzono na 26 maciorkach karmiących owcy kamienieckiej, pochodzących ze stada hodowlanego, podzielonych na 2 równe grupy, analogiczne pod względem wieku oraz typu miotu i płci odchowywanych jagniąt: I - kontrolną, II - doświadczalną. Zwierzęta obu grup otrzymywały podczas 70-dniowej laktacji taki sam zestaw pasz objętościowych: sianokiszonkę z traw i roślin motylkowych, siano łąkowe oraz mieszankę CJ. Dzienna dawka pokarmowa, w przeliczeniu na 1 matkę, obejmowała: 2,80 kg sianokiszonki z traw i roślin motylkowych, siano łąkowe i 0,6 kg mieszanki treściwej CJ. Maciorki z grupy doświadczalnej otrzymywały mieszankę CJ z dodatkiem suszonych drożdży piwowarskich Saccharomyces cerevisiae Inter Yeast S®, w proporcji 50 g kg- 1 mieszanki. Próby mleka do analiz pobierano podczas doju kontrolnego dwukrotnie, w 28. i 70. dniu laktacji, i określono w nich procentową zawartość: białka, białka serwatkowego i kazein, a także udział frakcji as-, ß- i K-kazeiny w kazeinie całkowitej. Krew do badań pobierano dwukrotnie z żyły jarzmowej, a w otrzymanej surowicy określono koncentrację składników mineralnych: Ca, Pin i Mg. Dodatek drożdży nie spowodował istotnych zmian w zawartości białka oraz białka serwatki w mleku, zarówno w szczytowej, jak i końcowej fazie laktacji, natomiast wpłynął na kształtowanie się udziału frakcji kazein. stwierdzono, że w mleku owiec z grupy II nastąpiło istotne obniżenie poziomu ß-kazeiny (o 2,32%), a równocześnie wzrost (p<0,01) zawartości K-kazeiny (o 1,86%). Stężenie wskaźników mineralnych surowicy (Ca, P i Mg) pozostawało na zbliżonym poziomie w obydwu grupach owiec zarówno w 28., jak i 70. dniu laktacji i mieściło się w granicach wartości referencyjnych. wyniki badań wskazują, że dodatek suszonych drożdży piwowarskich Saccharomyces cerevisiae do diety owiec karmiących może mieć wpływ na jakość białka mleka.

Źródło:

Journal of Elementology; 2012, 17, 1; 79-86
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Evaluation of the Dietary Supplements Intake Among University Students

Autorzy:

Cebula, Agnieszka
Ględa, Paulina
Kwaśniak, Estera

Powiązania:

https://bibliotekanauki.pl/articles/1166206.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

dietary supplements
minerals
supplementation
university students
vitamins

Opis:

The aim of this study was to determine the prevalence and reasons of intake of dietary supplements among students aged 19-29 years. The survey was performed using the questionnaire method Computer-Assisted Web Interview among group of 350 students aged 19-29 years in March 2018. Dietary supplements have been used by 66,85% respondents. More than a half of respondents took them every day. Almost 70% of students took dietary supplements as a result of their own decisions. Single-component supplements were the most commonly used ones, including preparations of vitamin D and magnesium. The most common reasons of supplementation among students were preventions and improvement of health. The current study shows that the intake of dietary supplements is common among students, especially among women and students of nutritional associated courses. In most of the cases it was a result of individual decisions, rarely due to the recommendations of specialists.

Źródło:

World Scientific News; 2018, 106; 163-174
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Heavy minerals in the key Late Pleistocene loess-palaeosol section at Kolodiiv (East Carpathian Foreland, Ukraine)

Autorzy:

Racinowski, R.

Powiązania:

https://bibliotekanauki.pl/articles/2059497.pdf

Data publikacji:

2007

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Ukraine
Late Pleistocene
loess
palaeosols
heavy minerals

Opis:

Successions of loess and other deposits in the Kolodiiv profile, formed during the Eemian Inter glacial and Vistulian Glacial (OIS 5-2), are characterized using the results of heavy mineral analysis. Weathered local carbonate rocks and fluvial deposits (Wartanian Glacial, OIS 6) are used for comparison. It was found that the content of minerals derived from weathered and redeposited Carpathian Flysch increases from bottom to top of the profile. The entire loess succession accumulated under similar lithodynamic conditions and the palaeosols are of similar character.

Źródło:

Geological Quarterly; 2007, 51, 2; 185-188
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Beneficiation of arsenic bearing complex sulphide ore by flotation

Autorzy:

Gul, A.
Bulut, G.
Sirkeci, A. A.

Powiązania:

https://bibliotekanauki.pl/articles/110834.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

arsenic
non-toxic depressants
sulphide minerals
flotation

Opis:

In this study beneficiation of a sulphide ore from the Gümüşhane-Black Sea Region of Turkey was investigated. Detailed flotation studies were carried out with the ore sample which contained 2.95% Pb, 6.72% Zn and 0.32% Cu. Mineralogical analyses showed that the sample includes pyrite, galena, sphalerite, chalcopyrite, tennantite, cerussite, anglesite and smithsonite. On the other hand, hematite, goethite, limonite, calcite and quartz were determined as gangue minerals. Selective sulphide concentrates with low arsenic content were tried to be produced by froth flotation. Individual concentrates of Pb, Zn and Cu assayed 67.54% Pb, and 61.49% Zn and 23.31% Cu where corresponding recoveries were 73.0% and 77.1% and 38.7%, respectively. Arsenic contents were less than 2000 ppm in the lead and zinc con-centrates. Copper concentrate assayed 5.03% As since the major copper minerals were in tennantite form (copper arsenic sulphide mineral). In flotation tests, non-toxic reagents such as metabisulphite, caustified starch, and activated carbon were used to depress minerals in relevant circuits.

Źródło:

Physicochemical Problems of Mineral Processing; 2013, 49, 1; 203-212
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Skały impaktowe struktury Puczeż-Katunki, platforma wschodnio-europejska, Rosja
Impact rokcs from the Puchezh-Katunki structure, East-European Platform, Russia

Autorzy:

Kosina, Romuald

Powiązania:

https://bibliotekanauki.pl/articles/1033127.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Meteorytowe

Tematy:

PDFs
astrobleme
impactites
quartz recrystallization
secondary minerals

Opis:

The complex Puchezh-Katunki (PK) structure was created in the area of the Vladimir-Vyatka dislocation zone on the crystalline basement of the East European platform. The crater ca 80 km in diameter is located north of the city Nizhny Novgorod and is covered by thick layers of Mesozoic sediments. Shocked rocks, mainly gneisses, have been described. Recrystallised feldspar-quartz melt is the most common component in specimens of impactites. The melt is preserved in the form of various clasts showing wavy nebulous contacts within the surrounding microcristalline or isotropic matrix. Planar deformation features (PDFs) were observed in the quartz grains, including toasted quartz. Their number ranges from one to three. The PDF lines are limited to the grain boundaries or cross them. A few ‘kinky’ cracks have been noted in the biotite plates. Lobate inter-grain contacts prove that quartz is recrystallised by grain-boundary migration. The recrystallized quartz also occurs in the form of ballen quartz and trydimite. Both types of quartz are numerous in the material under study. Tridymite tiles show patchy extinction. Various matrices formed from rock melts are microcrystalline (clay minerals) and contain fragments of isotropic glass, also in the form of spherules. In matrix, some clasts are in the form of the ballen quartz, sometimes with relics of PDFs. Matrices of recrystallized rock melts are characterised by different colours, number of clasts and are distinctly separated from each other. The melts during the impact process are immiscible. Secondary mineralization is more frequent in the rock melts and less frequent in the metamorphosed gneisses. Magnetite, pyrite and zeolites are the most common secondary minerals.

Źródło:

Acta Societatis Metheoriticae Polonorum; 2019, 10; 74-91
2080-5497

Pojawia się w:

Acta Societatis Metheoriticae Polonorum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Determination of nutritional and chemical composition of some edible wild plants used in herby cheese

Autorzy:

Eryigit, T.
Tuncturk, M.
Tuncturk, R.

Powiązania:

https://bibliotekanauki.pl/articles/1192472.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

Liliaceae
herby cheese
heavy metals
nutritional minerals

Opis:

Same as in many parts of the world, many edible weeds belonging to different families that have not been cultured in Turkey are traditionally used in the making of many foods. In this study, minerals and nutrients of six edible wild plant species belonging to the Liliaceae family, which are currently used in the production of herby cheese in the Eastern Anatolia region of Turkey, were determined. The determination of these macro- and micro-minerals was performed on ICP-AES and UV Visible spectrophotometers. As a result of the study, major differences were discovered between these plant species in terms of the mineral content (Na, Mg, K, s, Ca, P, Fr, Mn, Cu, Zn, Cr, and Co) and nutrient properties (total ash, crude fibre, pH, N, and crude protein). Except for the Allium schoenoprasum species, all plant samples were found to be rich in many important minerals, such as Fe, Cu, Ca, K, Mn, and Zn, which are known to be vital for human health. The concentrations of these minerals and a few heavy metals in plant samples were found in the following ranges: 17.25 - 25.47 mg kg-1 for copper, 18.45 - 34.14 mg kg-1 for zinc, 33.42 - 98.42 mg kg-1 for manganese, 0.12 - 0.54 mg kg-1 for chromium, 0.31 - 1.61 mg kg-1 cobalt. Many significant correlations were found among the parameters analysed. The study presents essential results on the availability of some vital minerals that could be useful or harmful to consumers, in order to provide dietary information for designing value-added foods.

Źródło:

Journal of Elementology; 2020, 25, 3; 1127-1139
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Effect of metal ions from Ginkgo biloba extracts on the oxidative stability of rapeseed oil and its triacylglycerols

Autorzy:

Kobus-Cisowska, J.
Dziedzinski, M.
Szczepaniak, O.
Flaczyk, E.
Telichowska, A.
Krol, E.
Staniek, H.
Byczkiewicz, S.

Powiązania:

https://bibliotekanauki.pl/articles/1192072.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza

Tematy:

Ginkgo biloba
minerals
lipid
oil
antioxidants
triacylglycerol

Opis:

Total antixodative effect is difficult to predict because the total antiradical capacity depends not only on properties of individual compounds, but also on their mutual interactions. The study examined the effect of the addition of Ginkgo biloba antioxidants to refined rapeseed oil on the stabilization of the oil and its triacylglycerols, measured by an Oxidograph accelerated oxidative stability test and the Rancimat test. The mineral composition of oil was also determined. The tested samples were observed to respond differently in terms of the induction period, which was the longest periods for ethanolic extracts, and the shortest for aqueoeus ones. The highest values of the protective factor were observed in the samples with added ethanolic extract of green leaves, while the lowest ones were noted in all aqueous extracts. In all the tested samples, values of the protection factor increased along with the growing extract concentration in a sample. Among the tested additives, butylated hydroxytoluene added to a sample of oil resulted in the longest induction period. Among the analysed microelements, iron was the prevalent one, with its concentration being significantly higher in water extracts. The least abundant was selenium. The antioxidative capacity of Ginkgo biloba extract resulted from the presence of transitional metals and polyphenols, as the presence of zinc, copper and iron affects the bioavailability of flavonoids. Negative relationships were noted between microelements in the extracts and its oxidative stability, which indicated the oxidative activity of the former. G. biloba extracts may be a new source of stabilising additives for high-fat foods. However, further reasearch I needed to confirm this assumption, particularly because food is a complex matrix, in which ingredients might interact with one another, causing higher or lower antioxidative capacity

Źródło:

Journal of Elementology; 2020, 25, 3; 851-862
1644-2296

Pojawia się w:

Journal of Elementology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Mineralogy of the Baszkówka chondrite (L5 S1): new data on silicates, opaques and minor minerals

Autorzy:

Borucki, J.
Stępniewski, M.

Powiązania:

https://bibliotekanauki.pl/articles/2059302.pdf

Data publikacji:

2001

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

Baszkówka
meteorites
ordinary chondrites
minerals
spinel
picotite

Opis:

The mineral composition of the Baszkówka meteorite comprises: olivine, pyroxenes, plagioclase, Fe,Ni metal, troilite and chromite with minor chlorapatite, whitlockite, magnetite, haematite, spinel, idaite, calcite and native Cu. A rare variety of spinel (picotite), probably the oldest among the minerals of Baszkówka, was identified in the only two chondrules named: panda and chevron. The composition of the olivine (Fa 26.2š1.8 wt.%) and the high degree of chondrite homogenisation, a result of thermal metamorphism, are consistent with earlier results and indicate the L5 group. No distinct shock effects were observed in Baszkówka, classified as S1. Troilite-Fe,Ni and Fe,Ni metal lumps are defined and interpreted as molten planetesimals impact splashes.

Źródło:

Geological Quarterly; 2001, 45, 3; 229-256
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Colourful speleothems in the Wieliczka Salt Mine

Autorzy:

Sawłowicz, Z.
Przybyło, J.
Boroń, K.

Powiązania:

https://bibliotekanauki.pl/articles/2060052.pdf

Data publikacji:

2014

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

halite
speleothem
Wieliczka mine
iron minerals
colours

Opis:

Secondary halite deposits in the Wieliczka Salt Mine are represented by various forms of speleothems. Some of them, e.g. stalactites, cauliflowers or crusts, reveal various hues, yellow to red to brown. These hues are related to iron compounds, but the forms, occurrence and composition of these compounds has not previously been studied. To explain the origin of their colours a detailed study of samples collected in the mine, including brines and water soluble extracts and produced experimentally in the laboratory, has been undertaken using SEM, XRD and AAS. The colourful speleothems are compared, using SEM-EDS, with the forms and composition of rusting metal artefacts, where several iron oxide minerals have been identified. We suggest that coloured halite is generally pure halite of which the surface was covered by a ferric minerals suspension in the brine. Colours of the speleothems stem from the various colours of iron minerals whereas their intensity is related probably to the type of fluid that coated the crystals, a continuous film or finely dispersed micron-size mineral aggregates.

Źródło:

Geological Quarterly; 2014, 58, 3; 449--458
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

A review of investigations into the management of gangue in the flotation of platinum group minerals

Autorzy:

O’Connor, C.
Wiese, J.
Corin, K.
McFadzean, B.

Powiązania:

https://bibliotekanauki.pl/articles/110708.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

Depressants
chromite
copper sulphate
platinum group minerals

Opis:

The Bushveld Complex of South Africa contains almost 90% of the world’s reserves of platinum group minerals (PGMs). In the flotation of PGMs, there are significant challenges arising from the need to treat ever-decreasing grades of the relevant ore deposits. The major challenge in the flotation of these ore bodies is the control and management of the gangue minerals, particularly silicates such as orthopyroxene, plagioclase feldspar, and pyroxene which are often rimmed with talc which makes them naturally floatable. It has been shown that various polysaccharide depressants such as CMC and guar have different properties in terms of depressing the gangue minerals. Since the PGMs are often associated with sulphides, copper sulphate is widely used as an activator in PGM flotation but can inadvertently activate the gangue minerals as well as reduce the recovery of PtTe2 which accounts for up to 40% of the Pt in the Platreef ore body. Depressants also reduce the mass of solids reporting to the froth and can thus destabilize the froth. This effect on the froth can be mitigated by using higher frother dosages or water of higher ionic strength. In summary due care needs to be taken to carry out site test work to develop an optimum ratio of collector, frother, activator and depressant to ensure that the highest grades and recoveries of the PGEs are obtained while reducing depressant dosage as much as possible. Chromite recoveries can be reduced through the application of gravity separation or reducing entrainment through reduced water recovery.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 4; 1107-1115
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Analysis of selected mineral and waste sorbents for the capture of elemental mercury from exhaust gases

Autorzy:

Wdowin, Magdalena
Macherzyński, Mariusz
Panek, Rafał
Wałęka, Mateusz
Górecki, Jerzy

Powiązania:

https://bibliotekanauki.pl/articles/127635.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Mineralogiczne

Tematy:

mercury capture
exhaust gas
minerals
waste products

Opis:

Several mineralogically, chemically and texturally diverse minerals and waste materials were selected for the testing of elemental mercury capture in exhaust gas, namely tyre char resulting from the burning of pyrolytic rubber tyres, class C fly ash, mesoporous material type MCM-41 and glauconite. Each material's mineralogical, chemical and textural characteristics were explored. In order to conduct experiments in conditions similar to those during the contact of sorbent with real coal exhaust fumes at a temperature of about 110-120°C, the experiments were carried out using a test device consisting of a furnace for burning powdered coals, a thermostatic cage for sorbent reactors and mercury gas analysers, which are able to measure and compare the effects of individual sorbents with exhaust gas. The study found that the best results for mercury sorption in the exhaust atmosphere were obtained for class C ash resulting from brown coal combustion.

Źródło:

Mineralogia; 2020, 51, 1; 17-35
1899-8291
1899-8526

Pojawia się w:

Mineralogia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Wybrane zagadnienia biomineralogii
Selected issues of biomineralogy

Autorzy:

Pawlikowski, Maciej

Powiązania:

https://bibliotekanauki.pl/articles/20198314.pdf

Data publikacji:

2022

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

tkanka
krystalizacja
rozpuszczenie
równowaga chemiczna
minerały pierwotne
minerały wtórne
minerały obecne w tkankach organizmów
tissue
crystallization
dissolution
chemical balance
primary minerals
secondary minerals
minerals present in tissue of organisms

Opis:

Biomineralogy is the science between mineralogy, biology, medicine and biochemistry. It is focused on problems concerning mineralization of tissue and organs of human, animals and flora. It concerns interaction between mineral and biological tissue, as well as between biochemical components of living organism. These processes are important for good functioning of organs and human life.

Źródło:

Przegląd Geologiczny; 2022, 70, 11; 834-839
0033-2151

Pojawia się w:

Przegląd Geologiczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Oxygenic bismuth minerals in the NE part of the Karkonosze pluton (West Sudetes, SW Poland)

Autorzy:

Kozłowski, A.
Matyszczak, W.

Powiązania:

https://bibliotekanauki.pl/articles/139403.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Karkonosze granitoid pluton
bismuth minerals
secondary minerals
oxidation
vein
pegmatite
Karkonosze
pluton
minerały bizmutu
minerały wtórne
utlenianie
żyła
pegmatyt

Opis:

The study presents fifteen oxygen-bearing secondary minerals of bismuth from the north-eastern part of the Variscan Karkonosze granitoid pluton in the northern zone of the Bohemian massif. The minerals were investigated by optical, electron microprobe, classic chemical, XRD, IR absorption and fluid inclusion methods. The late, very low temperature epithermal solutions most probably caused formation of sillénite, kusachiite, bismoclite, bismutite, beyerite, kettnerite, pucherite, schumacherite, namibite and eulytite. Solutions dominated by supergene (meteoric) waters were the parents for bismite, russellite, koechlinite, ximengite and walpurgite. The paper also contains information on early research on the investigated minerals.

Źródło:

Acta Geologica Polonica; 2018, 68, 4; 537-554
0001-5709

Pojawia się w:

Acta Geologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Wtórne zmiany w obrębie fosforków i węglików w meteorycie Morasko
The Secondary Changes of Phosphides and Carbides in Morasko Meteorite

Autorzy:

Gurdziel, Agnieszka
Karwowski, Łukasz

Powiązania:

https://bibliotekanauki.pl/articles/1032705.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Meteorytowe

Tematy:

Morasko meteorite
meteorites
secondary minerals
weathered iron meteorite

Opis:

Weathering processes of minerals which are presented in the Morasko meteorite are characterized by different speed of the secondary changes. The most resistant minerals for the alternations are phosphites (schreibersite, rhabdite, nickielphosphide) and carbides (cohenite) but also the mentioned phases show secondary fluctuation. Phosphites are changing into metallic, phosphorus free phases, which are similar to native nickel or avaurite (awaruitu) with very well visible modification of its crystal morphology. All phosphorus amount is introduced to secondary phosphates like vivianite. The carbides alternation processes occur in a different way than in case of phosphates. Carbon is free to the environment up to time, when the new phase is totally decomposed and replaced by hydroxyoxide of iron. Sometimes, the high-nickel metallic phases are also noted as the products of the weathering. All described mineral phases, that are resistant for secondary alternation might be indicators for high evolved meteoritic material in the Earth’s weathered rocks.
Wietrzenie poszczególnych faz mineralnych, obecnych we fragmentach meteorytu Morasko, przebiega w różnym tempie. Za najbardziej odporne uznaje się fosforki (schreibersyt, rhabdyt, nickielphosphide) oraz węgliki (cohenit). Jednak po pewnym czasie również i te fazy ulegają rozpadowi. Z fosforków wyraźnie ubywa fosforu i przekształcają się one stopniowo w fazy metaliczne, zbliżone do taenitu lub awaruitu. Towarzyszy temu zmiana morfologii kryształów. Uwolniony fosfor wchodzi w skład wtórnych fosforanów typu wiwianit (vivianit). Węgliki zachowują się nieco odmiennie. Węgiel zostaje stopniowo uwalniany do środowiska a w dalszym etapie faza ta ulega całkowitemu rozpadowi przechodząc w wodorotlenki żelaza. Jednymi z ostatnich faz, które można dostrzec wśród wodorotlenków żelaza są wtórne fazy wysokoniklowe. Powyższe odporne na wietrzenie fazy, jako nieobecne na powierzchni Ziemi (z wyjątkiem krzemianów), mogą służyć identyfikacji meteorytowego pochodzenia silnie zwietrzałych skał.

Źródło:

Acta Societatis Metheoriticae Polonorum; 2011, 2; 25-33
2080-5497

Pojawia się w:

Acta Societatis Metheoriticae Polonorum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Wpływ wybranych czynników na zawartość składników mineralnych w soku brzozy brodawkowatej (Betula pendula Roth)
Influence of selected factors on the content of minerals in the silver birch (Betula pendula Roth) tree sap

Autorzy:

Staniszewski, P.
Bilek, M.
Szwerc, W.
Gostkowski, M.
Osiak, P.
Żurek, N.
Kocjan, R.

Powiązania:

https://bibliotekanauki.pl/articles/978941.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

non−wood forest products
silver birch sap
minerals

Opis:

The aim of this study was to determine the content of selected minerals in silver birch sap, and to examine whether the tree thickness (DBH), the obtained daily volume of sap and the date of collection have an impact on their content. The study was carried out in central−eastern Poland, in the Garwolin Forest District, in a stand with a dominant share of silver birch at the age of 65, which grows on a moist mixed broadleaved forest habitat type. Sap from the selected trees was taken after 24 hours of leakage, four times, at weekly intervals. In each case, the daily sap volume was measured and the content of zinc, copper, and manganese was determined. As a result, no effect of tree diameter on the content of the studied elements was found. However, a negative relationship was stated between copper content and daily sap volume. Moreover, birch sap was characterized by increasing concentration of zinc and copper over time. The obtained results of the determination of the content of minerals in birch sap testify to the fact that it is characterized by high nutritional value. However, the large variability in its composition means that in order to obtain such benefits it is necessary to combine sap taken from as many trees as possible, while sap collected from only one tree may have a negligible nutritional value.

Źródło:

Sylwan; 2020, 164, 05; 424-431
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Secondary arsenic minerals from the Złoty Stok As-Au abandoned mine (SW Poland)

Autorzy:

Siuda, R.
Macioch, A.

Powiązania:

https://bibliotekanauki.pl/articles/2060083.pdf

Data publikacji:

2018

Wydawca:

Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy

Tematy:

erythrite-hörnesite-annabergite series
picropharmacolite
secondary arsenic minerals

Opis:

Secondary arsenic minerals (SAM) formed recently in abandoned adits of the former Au-As mine at Złoty Stok (SW Poland) constitute two assemblages. The first consists of two types of scorodite, pitticite, kaňkite, hörnesite, picropharmacolite and minor amounts of jarosite and gypsum. Formation of the Fe arsenates took place under acidic conditions (pH ~3-4) as a result of löllingite, arsenopyrite and pyrite oxidation. Hörnesite and picropharmacolite crystallized as products of interactions between acidic arsenic-rich pore solutions with Mg-Ca carbonates from rocks that surround the ore mineralisation. The interaction of carbonates with acid pore solutions caused a rapid increase in pH that reached neutral or weakly alkaline values. The chemical compositions of hörnesite and picropharmacolite correspond well to their ideal compositions: (Mg3.17Ca0.07)Ʃ3.24(AsO4)1.90 8H2O and Ca4.31Mg0.92(HasO4)1.91[(AsO4)1.99(SO4)0.01]Ʃ2.00 11H2O, respectively. The second assemblage of SAM comprises exclusively the Mg-enriched erythrite [(Co1.66Mg1.03Ni0.28Ca0.05Zn0.02)Σ3.03(AsO4)1.99× 8H2O)] – annabergite [(Ni1.48Mg0.94Co0.66Ca0.12Fe0.01Zn0.01)S3.20AsO4)1.92× 8H2O] series. These minerals crystallized from slightly acidic (pH ~5–6) to neutral media. Dissolution of SAM and other secondary phases (e.g., schwertmannite) causes the release of arsenate and sulphate ions into mine waters. These ions can be reduced under anaerobic conditions by different strains of bacteria. The product of this proces is orpiment.

Źródło:

Geological Quarterly; 2018, 62, 4; 925--940
1641-7291

Pojawia się w:

Geological Quarterly

Dostawca treści:

Biblioteka Nauki

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