Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "MAN." wg kryterium: Autor

  Lista filtrów

Dostawca treści

Podbaza

Wyrównaj
Wyświetlanie 1-50 z 168
Tytuł:
Zemsta, zemsta, zemsta! : wrzenie wśród szyitów po zamachu na święty meczet w Nadżafie
Powiązania:
Życie Warszawy 2003, nr 203, s. 8
Współwytwórcy:
MAN. Opracowanie
Data publikacji:
2003
Tematy:
Al-Hakim, Mohammed Bakir
Opis:
Zamach w polskiej strefie stabilizacyjnej, przed meczetem w Nadżafie, w którym zginął szyicki przywódca Mohammed Bakir al-Hakim.
Fot.
Oprac. art. zamieszcz. w "The Washington Post". --- 2003.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Wyznaczanie siły wyrywającej nić chirurgiczną z trzustek przy użyciu maszyny wytrzymałościowej MTS Insight
Determination of pullout strength the surgical suture from pancreases using MTS Insight testing machine
Autorzy:
Man, K.
Gzik-Zroska, B.
Powiązania:
https://bibliotekanauki.pl/articles/98700.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
trzustka świńska
statyczna próba rozciągania
siła zrywająca
wpływ mrożenia
pancreas
static tensile test
breaking force
tissue freezing
Opis:
W pracy przedstawiono wyniki badań doświadczalnych przeprowadzonych na trzustkach świńskich przy użyciu maszyny wytrzymałościowej MTS Insight. W ramach badań wyznaczono wartość siły potrzebnej do wyrwania nici chirurgicznej wkłutej do miąższu trzustki. W pracy przedstawiono również analizę statystyczną mającą na celu ocenę wpływu mrożenia trzustek na wartość wyznaczonej siły.
The article presents of experimental studies carried out on pig pancreases using a testing machine MTS Insigh. The study determined the value of the breaking force applied axially to the surgical thread inserted to a pancreatic parenchyma and a comparative analysis of the impact of freezing on the value of the designated forces. The test results will allow better estimation of the risk of postoperative complications, and thus apply in advance the possible ways to prevent them.
Źródło:
Aktualne Problemy Biomechaniki; 2016, 10; 31-36
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using the economical-mathematical modelling in the constructive preparation of production
Autorzy:
Dima, I. C.
Man, M.
Grabara, J.
Powiązania:
https://bibliotekanauki.pl/articles/123019.pdf
Data publikacji:
2013
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
constructive preparation
usage value
exchange value
esteem value
market value
customer value
integration of production
production scheduling
Opis:
The constructive preparation of industrial production aims at determining the physical and chemical properties, the external appearance and other elements regarding quality, which shall allow the product in question to meet the requirements of national economy in the fields of usage and consumer requirements. The starting point lies in the knowledge of the pursued goal, i.e. the product type and the requirements it must meet in terms of consumers and national economy. The knowledge of the destination of the new product and the usage thereof determines the technical solutions to be adopted.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2013, 12, 1; 21-32
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Cashew Apple Pomace Powder in Pasta Making: Effects of Powder Ratio on the Product Quality
Autorzy:
Nguyen, Thi Phuong Trang
Tran, Thi Thu Tra
Ton, Nu Minh Nguyet
Le, Van Viet Man
Powiązania:
https://bibliotekanauki.pl/articles/16538534.pdf
Data publikacji:
2023-02-21
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
antioxidant capacity
by-product
dietary fiber
pasta
Opis:
The production of cashew apple juice generates fruit pomace which is rich in dietary fiber and phenolic compounds and shows high antioxidant capacity. In this research, the effects of different ratios of cashew apple pomace powder (CAPP) in the pasta formulation on the product quality were investigated. Increase in CAPP level in the pasta recipe from 0 to 20% enhanced the total dietary fiber and total phenolic content of the product by 4.1 times and 11.8 times, respectively, as well as improved the 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and ferric reducing antioxidant power by 18.2 times and 28.6 times, respectively. Nevertheless, the increased level of CAPP in the pasta recipe resulted in decreased cooking quality, textural properties and overall acceptability of the pasta. Pasta sample with 10% CAPP level in the recipe was considered high-fiber food with acceptable sensory quality. Therefore, CAPP may be considered a promising source of dietary fiber and antioxidants for the development of healthy food products.
Źródło:
Polish Journal of Food and Nutrition Sciences; 2023, 73, 1; 50-58
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Abraham Maslow's motivation theory for setting consumers' satisfaction-non-satisfaction
Wykorzystanie teorii motywacji Abrahama Maslowa w kształtowaniu satysfakcji bądź dyssatysfakcji klientów
Autorzy:
Dima, I. C.
Man, M.
Kot, S.
Powiązania:
https://bibliotekanauki.pl/articles/405979.pdf
Data publikacji:
2010
Wydawca:
Politechnika Częstochowska
Tematy:
potrzeba motywacji
satysfakcja
niezadowolenie
postrzeganie jakości
realne oczekiwania
need motivation
satisfaction
dissatisfaction
perceived quality
reality expected
Opis:
Behind a consumer's decision to purchase a product/service there is always a reason or a complex of reasons, and behind rejecting a product/service there is always the consumer's conclusion that, by its competences, that respective product/service will not fulfil that respective need at the level one desires. In order to explain the internal origins of consumers' behaviour, the contemporary psychology applies to the concepts of "needs" (necessities) and "motivations". The relation between these two categories consists in the needs which become antecedent conditions for determining the occurrence of motivations.
Każda decyzja klienta dotycząca nabycia produktu lub usługi poparta jest jakimś powodem lub zespołem takich powodów. Rezygnacja z produktu/usługi wiąże się z wnioskowaniem klienta, który dzięki swoim kompetencjom wie, że dany produkt/usługa nie spełni jego indywidualnych potrzeb na wymaganym przez niego poziomie. Aby wyjaśnić pierwotne pochodzenie zachowania konsumentów, współczesna psychologia stosuje koncept potrzeby oraz motywacji. Związek pomiędzy tymi dwoma kategoriami wywodzi się od potrzeb, które są czynnikami poprzedzającymi wystąpienie motywacji.
Źródło:
Polish Journal of Management Studies; 2010, 2; 132-138
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Towards a pluralistic epistemology: understanding human-technology interactions in shipping from psychological, sociological and ecological perspectives
Autorzy:
Man, Y.
Lundh, M.
MacKinnon, S. N.
Powiązania:
https://bibliotekanauki.pl/articles/116821.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
pluralistic epistemology
epistemology
human-technology interactions
shipping
psychological perspective
sociological perspective
ecological perspective
Human Computer Interaction (HCI)
Opis:
In the shipping domain, many innovative technical systems have been designed and developed in the past decades, aiming to enable the maritime users to achieve the goal of safety, efficiency and effectiveness. The introduction of advanced technologies into workplaces have also created unprecedented challenges. Human users frequently find themselves in a supporting role to serve technology, being responsible for automation issues and blamed for “human errors” that sometimes result in tragic results. These challenges are closely associated with the design and use of technologies. Human‐technology interactions has become an important multidisciplinary research topic for shipping. This article reviews theoretical concepts relative to the dimensions of psychology, sociology and ecology in Human Computer Interaction (HCI) in order to form a deeper understanding of human‐technology interactions. This paper also discusses the theoretical constructs’ practical relevance by showing how a few cases exemplifying ongoing development sectors in shipping, such as energy efficiency optimisation, supervisory control of autonomous unmanned ships, and eco‐systems in engine control rooms, are understood with these theoretical perspectives. By presenting multidisciplinary understandings of human‐technology interaction, this paper aims to derive knowledge pertinent to methodological approaches and philosophical stances of future maritime human factors and HCI research.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 4; 795-811
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical Studies of High-nitrogen-containing Energetic Compounds Based on the s-Tetrazine Unit
Autorzy:
Man, T. T.
Wang, K.
Zhang, J.G.
Niu, X. Q.
Zhang, T. L.
Powiązania:
https://bibliotekanauki.pl/articles/358527.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
high-energy-density materials (HEDMs)
substituted s-tetrazine
compounds
electronic properties
thermodynamic properties
detonation
properties
Opis:
In order to develop new high-energy-density materials (HEDMs), we have investigated 12 substituted s-tetrazine (TZ) compounds, where s-tetrazine was substituted by amino, amido and related groups. Density functional theory (DFT) was used to predict the optimized geometries, electronic structures, total energy, heats of formation (HOFs) and densities. In addition the detonation properties were evaluated by using the VLW equation of state (EOS). The standard enthalpy of formation, the Gibbs free energy, entropy and equilibrium constants were used to estimate the success of the synthetic substitution reactions, which provided theoretical support for practical work. The bond dissociation energy (BDE) of bond C-R was calculated at each stage of the substitution reaction. The calculated results showed that substitution of amino, amido and their derivatives in the TZ ring enhances the HOF values and is favorable for increasing the thermal stability. The calculated detonation properties indicated that incorporating the above groups into the TZ ring is benefcial for improving the explosive performance. Considering the detonation properties and thermal stability, the 12 derivatives may be regarded as promising candidates as high-energy-density materials (HEDMs).
Źródło:
Central European Journal of Energetic Materials; 2013, 10, 2; 171-189
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The risk management organizational entities
Zarządzanie ryzykiem w jednostkach organizacyjnych
Autorzy:
Man, M.
Radu, S. M.
Tabor, J.
Powiązania:
https://bibliotekanauki.pl/articles/406235.pdf
Data publikacji:
2015
Wydawca:
Politechnika Częstochowska
Tematy:
risk
uncertainty
risk assessment
failure
unpredictability
ryzyko
niepewność
ocean ryzyka
błąd
nieprzewidywalność
Opis:
The place and role of risk in managerial activity must be analysed by taking into account the relation where the two concepts about risk are, namely: The concept suggested by the decision theory and concept suggested by managers. It is necessary to take into account managers’ behaviour towards the risk defined by the theory of choice, which leads to the following conclusion: managers actually assume risks and express preferences in terms of risk, using techniques and procedures – other than the traditional ones – such as media, variation of probabilistic distributions of possible outcomes, etc. Understanding the concept of "risk" by managers leads to a certain attitude they have towards risk characterised by three essential features and namely: managers' low sensitivity to probabilistic assessments of the possible results; managers' wilful mobilisation on some key objectives and decisive influence of this mobilisation on managerial decisions; clear distinction between managers assuming the rick and game of hazard. These features combined with the individual and organisational decisions highlight the impossibility of the classical conception of "risk" to enable a thorough and meaningful of the behavioural phenomenon of assuming the risk.
Miejsce i rola ryzyka w działalności menedżerskiej, muszą być analizowane z uwzględnieniem relacji, jaka zachodzi pomiędzy dwiema koncepcjami dotyczącymi ryzyka: koncepcją zaproponowaną przez teorię decyzji i koncepcją zaproponowaną przez menedżerów. Konieczne jest wzięcie pod uwagę zachowanie menedżerów, odnośnie ryzyka, zdefiniowanego przez teorię wyboru, z której wynikają następujące konkluzje: menedżerowie faktycznie przyjmują ryzyko i wyrażają pewne preferencje odnośnie ryzyka, przy wykorzystaniu technik i procedur – innych niż te tradycyjne – takie jak mediana, zmiany probalistycznych rozkładów możliwych wyników, itp. Rozumienie pojęcia "ryzyka" przez menedżerów prowadzi do określonej postawy wobec ryzyka, charakteryzującej się trzema zasadniczymi cechami, mianowicie: niską wrażliwością menedżerów na możliwe oceny probabilistyczne otrzymanych wyników; mobilizacją menedżerów odnośnie określonych, kluczowych celów i wpływem tej mobilizacji na podejmowane decyzje zarządcze; jasnym rozróżnieniem pomiędzy menedżerami podejmującymi ryzykowną grę. Te cechy, w połączeniu z indywidualnymi i organizacyjnymi decyzjami, podkreślają niemożliwość klasycznej koncepcji "ryzyka" umożliwiającej dokładne i znaczące pojmowanie ryzyko jako behawioralnego zjawiska.
Źródło:
Polish Journal of Management Studies; 2015, 11, 2; 115-126
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The new dimensions of higher education in mineral resources area
Nowe wymiary szkolnictwa wyższego w obszarze surowców mineralnych
Autorzy:
Radu, S. M.
Man, M.
Powiązania:
https://bibliotekanauki.pl/articles/405418.pdf
Data publikacji:
2014
Wydawca:
Politechnika Częstochowska
Tematy:
education
management
mineral resources
university
edukacja
zarządzanie
zasoby mineralne
szkolnictwo wyższe
Opis:
During the history, the engineering profession was practiced by people selected from the elite of young scholars, the qualification obtained during long years of high level education. Nowadays, thousands of engineers, sociologists, teachers and others are devoted to find out the good practice to educate the new kind of engineers, able to face the new problems emerging in the society.
Przez lata historii, zawód inżynieria był praktykowany przez ludzi wybranych z elity młodych naukowców, kwalifikacje uzyskiwano podczas długich lat edukacji na wysokim poziomie. Obecnie tysiące inżynierów, socjologów, nauczycieli i innych osób, poświęca się, aby dowiedzieć się na temat dobrych praktyk, ażeby kształcić nowy rodzaj inżynierów, być w stanie sprostać nowym problemom pojawiającym się w społeczeństwie.
Źródło:
Polish Journal of Management Studies; 2014, 10, 1; 120-127
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of selected amino acids on the dynamic properties of the liposome membranes : ESR study
Autorzy:
Man, D.
Broda, M.
Buczek, A.
Kawecka, A.
Siodłak, D.
Powiązania:
https://bibliotekanauki.pl/articles/146690.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
EYL liposomes
electron spin resonance (ESR) method
N-methylation
amino acids
peptides
Opis:
In this work the changes in the fluidity of liposome membranes caused by alanine and butyrine derivatives (Ac-Ala-NMe2 and Ac-Abu-NMe2) were investigated. Liposomes were obtained in the process of egg yolk lecithin (EYL) sonication. The concentration of the admixture in the proportion to EYL varied from 0 to 25% mole. The electron spin resonance (ESR) spectroscopy was used with two different spins probes. Each spin probe penetrates different regions of liposome membrane. The TEMPO probe occurs both in the hydrophobic part of the membrane and in the water environment what allows to determine the spectroscopic parameter F of division of this probe into the membrane and its water surrounding. DOXYL is localized in the central part of the lipid bilayer and is used to obtain the spectroscopic parameter τ – rotation correlation time – whose value gives information about fluidity changes in the middle of the lipid bilayer. The study indicated that the tested as admixtures N-methylated model peptides significantly changed the fluidity of liposome membranes. The dynamic of this process depends both on amino acids derivative and on the membrane region. Both studied compounds increased the fluidity of the surface layer of liposome membrane. At the same time, butyrine derivative caused the stiffening of the middle part of liposome bilayer, but alanine derivative slightly increased the fluidity of this region.
Źródło:
Nukleonika; 2013, 58, 3; 443-446
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of humic substances on the liposome structures : ESR method
Autorzy:
Man, D.
Pisarek, I.
Braczkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/147392.pdf
Data publikacji:
2013
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
EYL liposome
ESR method
humic substances
Opis:
In this paper the changes of membrane fluidity of liposome with additions of humic substances (humic and fulvic acids) were examined. Liposome were done by the sonication of lecithin EYL. Concentrations of humic substances in attitude to EYL varied between 0–10% of weight. The technique of electron spin resonance (ESR) were used for the examination followed by three spin probes with a variety placement of the membrane located. TEMPO probe melted in the hydrophobic membrane and in the aquatic solution which allowed to determine the spectroscopic partition parameter (F), indicating the changes that occur in water-lipid interphase. Probe 5-DOXYL placed directly under the heads of polar lipids and the order parameter measuring by the TII showed the changing of membrane fluidity at surface area. 16-DOXYL probe penetrated the middle of the lipid bilayer membrane and allowed to determine the rotational correlation time τ parameter, which gives us information about changing of the liquidity lipid bilayer. Studies showed that the tested humic substances significantly changed the membrane fluidity of liposome. The dynamics of this process depends on both: the fraction of humic substances and its quality and quantity as well as the placement area of the membrane.
Źródło:
Nukleonika; 2013, 58, 3; 439-442
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Forming of Acid Mine Drainage Based on Characteristics of Coal Mining, East Kalimantan, Indonesia
Autorzy:
Widayati Amy, Sri
Dani, Umar
Nu'man, Harits
Muslim, Dicky
Nasruddin, Dudi
Nuryahya, Himawan
Nurhasan, Rully
Agustin, Daryl Sarah
Powiązania:
https://bibliotekanauki.pl/articles/27323828.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coal
sulfur
acid mine drainage
NAPP
net acid production potential
Opis:
As one of the world’s coal producers, Indonesia continues to increase its coal production. The purpose of this study is to identify and analyze the characteristics of coal that has the potential to produce acid mine drainage. The research method is coal mapping and zoning based on formation, observation, and description of coal characteristics, coal sampling, ultimate and proximate testing, and analysis. The results of the study describe the characteristics of coal related to distribution in the early stages of evaluating the potential for acid mine formation, besides that it can be used as a basis for classifying the potential for acid mine drainage which has a high enough total sulfur based on the results of testing on 15 samples. To prevent the reaction to acid mine drainage, it can be based on the geochemical characteristics of coal by constructing a mine reservoir or making water drainage in a mine that is not close to the stockpile, because there is a possibility that water has the potential to form acid mine drainage (AMD) when it comes in contact with coal potential. So that coal does not have the potential to be a source of acid mine drainage.
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 301--310
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effects of Grain Boundary Structures on Mechanical Properties in Nanocrystalline Al Alloy
Autorzy:
Jang, Jin Man
Lee, Wonsik
Ko, Se-Hyun
Powiązania:
https://bibliotekanauki.pl/articles/2049173.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanocrystalline Al alloy
Young’s modulus
hardness
nanoindentation
low and high angle grain boundary
Opis:
This study investigates the effects of grain boundary structures on mechanical properties of nanocrystalline Al-0.7Mg-1.0Cu alloy using nanoindentation system. Grain boundary structure transforms to high angle grain boundaries from low angle ones with increase of heat treatment temperature and the transformation temperature is about 400°C. Young’s modulus and hardness are higher in sample with low angle grain boundaries, while creep length is larger in sample with high angle ones. These results indicate that progress of plastic deformation at room temperature is more difficult in sample with low angle ones. During compression test at 200°C, strain softening occurs in all samples. However, yield strength in sample with low angle grain boundaries is higher twice than that with high angle ones due to higher activation energy for grain boundary sliding.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 971-975
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dynamics of the surface layer of lipid membranes doped by vanadium complex : computer modeling and EPR studies
Autorzy:
Olchawa, R.
Man, D.
Pytel, B.
Powiązania:
https://bibliotekanauki.pl/articles/147585.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
EPR probe
lipid membrane
membrane fluidity
Monte Carlo simulation
Opis:
Penetration of the liposome membranes doped with vanadium complex formed in the liquid-crystalline phase from egg yolk lecithin (EYL) by the TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) spin probes has been investigated. The penetration process was followed by 360 hours at 24◦C, using the electron spin resonance (EPR) method. The spectroscopic parameter of the partition (F) of this probe indicated that a maximum rigidity of the membrane was at 3% concentration of the vanadium complex. Computer simulations showed that the increase in the rigidity of the membrane corresponds to the closure of gaps in the surface layer of the membrane, and indicates the essential role of the membrane surface in transport processes.
Źródło:
Nukleonika; 2015, 60, No. 3, part 1; 395-398
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The cost for the entire life cycle of the product respecting quality standards
Autorzy:
Man, M.
Modrak, V.
Dima, I. C.
Pachura, P.
Powiązania:
https://bibliotekanauki.pl/articles/406128.pdf
Data publikacji:
2011
Wydawca:
Politechnika Częstochowska
Tematy:
cykl życia produktu
standardy jakości
optymalizacja
life cycle of product
quality standards
optimization
Opis:
This article presents issues concerning life cycle of products. Taking into account the limitation of the life cycle of products and strategic investments that require the use of certain technologies, the decision of setting forth a new product on the market should rely upon the costs of its life cycle.
Artykuł prezentuje kwestie dotyczące cyklu życia produktów. Biorąc pod uwagę ograniczenia cyklu życia produktów oraz inwestycje strategiczne, które wymagają wykorzystania określonych technologii, decyzja o wdrożeniu nowego produktu na rynek powinna opierać się na kosztach ich cyklu życia.
Źródło:
Polish Journal of Management Studies; 2011, 4; 15-22
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The contribution of geophysics to archaeology: a case study of an ancient canal of the Oc Eo culture in the Mekong Delta, Vietnam
Autorzy:
Le, Ngoc Thanh
Nguyen, Quang Dung
Nguyen, Quang Bac
Nguyen, Quang Mien
Nguyen, Dan Vu
Duong, Ba Man
Nguyen, Dinh Chau
Powiązania:
https://bibliotekanauki.pl/articles/184367.pdf
Data publikacji:
2019
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
electromagnetic profiling
electrical resistivity tomography
hand-auger
radiocarbon dating
ancient canal
alluvial deposits
Oc Eo culture
Ba The mountain
Opis:
Generally, underground ancient canals are infilled with alluvial materials, with the canal bed and substrate often having different resistivity values. This study aimed to determine the location and morphology of Malleret’s ancient canal 16 located to the southeast of the Ba The mountain, Mekong Delta, Vietnam by means of geophysical techniques. Two geophysical methods were used: electromagnetic profile and electric resisitivity tomography. A geoelectric structure 70 m long with 70–95 mS/m of apparent conductivity was found. On the electrical resistivity tomography section, a resistivity zone of 10–20 Ω∙m, 1–4 m deep, 70 m wide corresponds to the mentioned above geoelectric structure, which is in an asymmetric U-shape extending toward the southeastern bank of canal 16. Hand-augering confirmed that the canal bed is fully incised into Holocene sediments as a substrate which stretches down to the Pleistocene. The sediments are composed of loams mixed with plant remains with a resistivity ρ ~ 10–15 Ω∙m. Both of the canal banks at a depth of 5 m are made up of Holocene sedi-ments (ρ ~ 4–10 Ω∙m). The 14C measurements determined the age of the organic matter in the canal as being equal to 1210 ±85 BP, suggesting canal 16 ceased being operational at that time. The precise positioning of canal 16 on the ground surface, as well as identifying the morphology of the canal bed, were corroborated by geophysical techniques. The obtained results are of considerable value to archaeologists.
Źródło:
Geology, Geophysics and Environment; 2019, 45, 1; 45-56
2299-8004
2353-0790
Pojawia się w:
Geology, Geophysics and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on Recovery of Valuable Metals in Spent Lithium-Ion Batteries by Al2O3-SiO2-CaO-Fe2O3 Slag System
Autorzy:
Moon, Tae Boong
Han, Chulwoong
Hyun, Soong-Keun
Park, Sung Cheol
Son, Seong Ho
Lee, Man Seung
Kim, Yong Hwan
Powiązania:
https://bibliotekanauki.pl/articles/2049176.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spent lithium-ion battery
smelting
Al2O3-SiO2-CaO-Fe2O3
recovery
slag
Opis:
This study investigated the recovery behavior of valuable metals (Co, Ni, Cu and Mn) in spent lithium ion-batteries based on Al2O3-SiO2-CaO-Fe2O3 slag system via DC submerged arc smelting process. The valuable metals were recovered by 93.9% at the 1250°C for 30 min on the 20 Al2O3-40SiO2-20Cao-20Fe2O3 (mass%) slag system. From the analysis of the slag by Fourier-transform infrared spectroscopy, it was considered that Fe2O2 and Al2O3 acted as basic oxides to depolymerize SiO4 and AlO4 under the addition of critical 20 mass% Fe2O3 in 20 Al2O3-40SiO2-Cao-Fe2O3 (Cao + Fe2O3 = 40 mass%). in addition, it was observed that the addition of Fe2O3 ranging between 20 and 30 mass% lowers the melting point of the slag system.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 4; 983-986
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spinor representation of the electromagnetic field
Autorzy:
Tuladhar, B. Man
López-Bonilla, J.
Powiązania:
https://bibliotekanauki.pl/articles/1178035.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Faraday’s tensor
Lorentz transformations
Maxwell equations
Maxwell spinor
Newman-Penrose formalism
Quaternions
Opis:
We exhibit the tensor, spinor and Newman-Penrose (NP) forms of Faraday tensor and the Maxwell equations. Our approach is based in real and null tetrads, which allows introduce in natural manner the NP and 2-spinor techniques to study arbitrary electromagnetic fields, with special emphasis in the relationship between quaternions and Lorentz transformations.
Źródło:
World Scientific News; 2018, 95; 1-20
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solvent extraction of Terbium(III) from chloride solution using organophosphorus extractant, its mixture and ionic liquid in the presence of organic acids
Autorzy:
Tran, Thanh Tuan
Song, Si Jeong
Oh, Chang Geun
Lee, Man Seung
Powiązania:
https://bibliotekanauki.pl/articles/24085863.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
extraction
Terbium(III)
organic acid
ionic liquid
buffer effect
Opis:
Addition of organic acids to dilute hydrochloric acid solution can improve the extraction of rare earth elements by single cationic extractants. However, the correlation between the chemical structure of organic acids and the extraction of REEs as well as the variation in equilibrium pH has not been elucidated. In this study, we investigated the extraction of Tb(III) from dilute HCl solutions containing an organic acid like formic, lactic, fumaric, or maleic acid. As extractants, single Cyanex 272, a mixture of Cyanex 272 and Alamine 336 (Ala336-Cy272), and an ionic liquid (ALi-Cy272) synthesized by Cyanex 272 and Aliquat 336 were used. The speciation of Tb(III) in dilute HCl solutions containing organic acids was analyzed. In extraction of Tb(III), organic acids showed two roles as complexing and buffering agent, which depended on the chemical structure of the acids. There was some difference in the extraction of Tb(III) between single Cyanex 272 and ionic liquid, ALi-Cy272. During extraction with ALi-Cy272, formic and lactic acid negatively affected the extraction of Tb(III). The fact that the chemical structure of organic acids affected the extraction of Tb(III) from dilute HCl solution by the studied extractants can provide important information on the selection of suitable extraction systems.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 2; art. no. 162714
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of rare earth elements from the leaching solution of waste phosphors by solvent extraction with Cyanex 272 and its mixture with Alamine 336
Autorzy:
Xing, Weidong
Lee, Man Seung
Powiązania:
https://bibliotekanauki.pl/articles/1449503.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
phosphors
rare earth elements
HCl solution
solvent extraction
Cyanex 272
Opis:
Waste phosphors contain rare earth elements (REEs) such as yttrium (Y), europium (Eu), cerium (Ce), terbium (Tb) and lanthanum (La). Separation of these REEs from the leaching solution of waste phosphors was investigated by solvent extraction with single Cyanex 272, binary mixture (mixture of Cyanex 272 and Alamine 336), ionic liquid (prepared by Cyanex 272 and Aliquat 336) in kerosene. The effect of solution pH and extractants concentration was mainly investigated. The results indicated that Y(III) was selectively extracted by single Cyanex 272 over the other four REEs from the HCl solution with initial pH range from 3 to 5. Synergistic extraction with the binary mixture was enough for the extraction of Y(III), Tb(III) and Eu(III) with a small amount of Ce(III). Scrubbing with pure Y(III) solution with intermediate acidity was effective in scrubbing Ce(III) from the loaded binary mixture organic phase. Stripping behavior of the Y(III), Tb(III) and Eu(III) by HCl solution was similar to each other. Tb(III) and Eu(III) can be separated by extraction with the binary mixture followed by scrubbing with pure Tb(III) solution. McCabe-Thiele diagrams were constructed for the extraction of Y(III) by single Cyanex 272 and that of Tb(III) by the mixture. A process was proposed for the separation of REEs from the leaching solution of waste phosphors by solvent extraction.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 1; 184-194
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of Co(II), Cu(II), Ni(II) and Mn(II) from synthetic hydrochloric acid leaching solution of spent lithium ion batteries by solvent extraction
Autorzy:
Nguyen, Viet Nhan Hoa
Lee, Man Seung
Powiązania:
https://bibliotekanauki.pl/articles/1449331.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
spent lithium-ion batteries
divalent metal ions
solvent extraction
separation
Opis:
Spent lithium ion batteries contain valuable critical metals such as cobalt, copper, lithium and nickel. In order to develop a process for the separation of the divalent metal ions from spent lithium ion batteries, solvent extraction experiments were performed by employing synthetic hydrochloric acid leaching solution. The synthetic solution contained Cu(II), Co(II), Mn(II) and Ni(II) and its acidity was 3 M HCl. Extraction with Aliquat 336 led to selective extraction of Cu(II) with a small amount of Co(II). After adding NaCl to the Cu(II) free raffinate to enhance the complex formation of Co(II), Co(II) was selectively extracted into Aliquat 336 together with Mn(II). The small amount of Mn(II) in the loaded Aliquat 336 was scrubbed by pure Co(II) solution. After adjusting the pH of the raffinate to 3, 91,3% of Mn(II) was selectively extracted over Ni(II) by the mixture of D2EHPA and Alamine 336. In this extraction, the mole fraction of D2EHPA in the mixture affected the extraction of Mn(II). McCabe-Thiele diagrams for the extraction of Cu(II) and Co(II) were constructed. Batch simulation experiments for the three stage counter-current extraction verified the selective extraction of the target metal ions in each extraction step. Namely, the total extraction percentage of Cu(II) and Co(II) was 71.6% and 98.8% respectively. Most metals in the loaded organic phase were stripped completely with the appropriate agents (1.0 M $H_2SO_4$ for Cu(II), 0.1 M H2SO4 for Co(II) and 0.3 M $HCl$ for Mn(II) stripping). A process was proposed to separate the metal ions by solvent extraction.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 4; 599-610
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sediment discharge and storage over the last deglacial highstand period on the central Vietnam shelf off Nha Trang
Autorzy:
Dung, Bui Viet
Stattegger, Karl
Kieu, Nguyen Van
Thanh, Nguyen Trung
Thong, Bui Xuan
Vu, Pham Nguyen Ha
Man, Ha Quang
Trang, Pham Hong
Powiązania:
https://bibliotekanauki.pl/articles/2058662.pdf
Data publikacji:
2019
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
sediment budget
Nha Trang shelf
central Vietnam
Holocene highstand
sequence stratigraphy
Opis:
A sediment budget for the central Vietnam shelf off Nha Trang over the last deglacial Holocene highstand period has been investigated on the basis of shallow seismic and sediment core data and empirical equations. The annual suspended sediment discharge to the Nha Trang shelf ranges from: 4.3 to 5.4 Mt/year. Estimates based on published empirical equations suggest that the sediment discharge by three main local mountainous rivers (the Cai, Dinh and Van Phong rivers) that enter the Nha Trang shelf ranges between 1.7 and 4 Mt/year, which implies that the local rivers discharge approximately 75% of the total annual sediment input to the shelf. The annual sediment supply of the Cai River is approximately 2 and 6 times higher than that of the Dinh and Van Phong rivers, respectively. The highstand sediment depocentre of the Nha Trang shelf is mostly attached to the local river outflows, indicating their importance as the principal sediment supply sources to the shelf. Additional sources of sediment supply to the Nha Trang shelf can probably be related to along-shore transport from the nearby shelves. Calculations based on seismic and sediment core data indicate that the net sediment volume storage on the Nha Trang shelf is approximately 2.15 Mt/year. Approximately 50% of the total sediment yield supplied to the shelf is probably transported along-shore to the south. The sediment budget model for highstand deposits on the Nha Trang shelf is typical for a small mountainous river basin, which is significantly different from that of the large river delta systems in Vietnam such as the Mekong and Red rivers where 90% of the river sediments are captured on the delta plain/subaqueous part and only 10% of the river sediments are transported to the nearby shelf. In contrast, most of the sediments supplied by small mountainous rivers off Nha Trang are transported to the mid-shelf, forming a shore-parallel mud depocentre.
Źródło:
Geological Quarterly; 2019, 63, 2; 395--406
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 168

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies