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Tytuł:
Dynamics of the condition of genesial health of women working on chemical production
Autorzy:
Esis, E.
Naumov, I.
Tishchenko, E.
But-Gusaim, L.
Aleksandrovich, A.
Powiązania:
https://bibliotekanauki.pl/articles/2052271.pdf
Data publikacji:
2014
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
genesial health
women
chemical production
Opis:
In modern social and economic conditions the condition of genesial health (further - GH) the female population remains to one of the most acute medico-social problems, being a national security prominent aspect. Research objective: scientifically to justify a complex of the preventive actions referred on optimization of medico sanitary maintenance of women working on chemical synthesis. Materials and methods: work is based on the systemic approach to a studied problem. Following methods are applied: sanitary-and-hygienic and sanitary-statistical. Effect of factors of industrial medium were evaluated on value of hygienic parameters in premises of shops of Open Society «Grodno Nitrogen» in a place of work of the patients, received at realization of gauging at the next certification of jobs for working conditions. For an estimation of condition GH of working women of chemical synthesis results of periodic medical examination and a condition of a case rate with time disablement (further - TD) during 2008-2012 are studied. At studying of a condition of genesial health of women working on Open Society «Grodno Nitrogen» it is established, that their professional work in the conditions of effect of harmful production factors of the chemical, physical and psycho physiological nature is accompanied by its aggravation that is shown by growth of a gynecologic and extra genital case rate, and also an obstetric pathology including with temporary disablement. For prophylaxis of disturbances GH of the yielded contingent of working women introduction of a complex of sanitary-and-hygienic, socially-hygienic, treatment-prophylactic actions is necessary.
Źródło:
Health Problems of Civilization; 2014, 08, 4; 9-15
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rapid production of 18F fluoride from 2-fluoroaniline via the 19F(n,2n)18F reaction using 14 MeV neutrons
Autorzy:
Mikołajczak, R.
Staniszewska, J.
Mikołajewski, S.
Rurarz, E.
Powiązania:
https://bibliotekanauki.pl/articles/147126.pdf
Data publikacji:
2002
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
chemical and production yields
fluorine-18
radiochemical separation
(n,2n) reaction cross section
Opis:
No carrier-added 18F fluoride was produced via the 19F(n,2n)18F reaction by 14 MeV neutron irradiation of 2-fluoroaniline and subsequent extraction of the produced 18F fluoride ion with water. The fluoride was then purified by liquid chromatography on a Chromabond-NO2 column. The time required for all chemical procedures was about 1 h. The average chemical separation yield was about 70%. The 18F activity obtained after 3 hours of irradiation at a flux rate of 108 n cm-2s-1 after a necessary 20-min delay was equal to several kBq per gram of fluorine in a 2-fluoroaniline sample, in accordance with the theoretically expected value. Improvement of the 18F production yield can be achieved by increasing neutron fluxes. Neutron generators with 14 MeV neutron fluxes of the order of 1010 n cm-2s-1 can produce tens MBq of 18F, sufficient for whole-day work in biomedical applications. Our results show that 14 MeV neutron irradiation of 2-fluoroaniline is a low cost alternative for the production of this nuclide in the countries which do not posses either cyclotrons or electron linear accelerator facilities.
Źródło:
Nukleonika; 2002, 47, 1; 13-18
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lentil use for extrudate production
Autorzy:
Borowska, J.
Fornal, L.
Fornal, J.
Rutkowski, A.
Kaczynska, B.
Powiązania:
https://bibliotekanauki.pl/articles/1371732.pdf
Data publikacji:
1992
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
lentil
physical property
extrudate production
chemical composition
extrusion
Źródło:
Polish Journal of Food and Nutrition Sciences; 1992, 01, 3; 71-78
1230-0322
2083-6007
Pojawia się w:
Polish Journal of Food and Nutrition Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of use a small fraction of rape seeds for the production of biofuels for compression ignition engines
Autorzy:
Tańska, M.
Ambrosewicz-Walacik, M.
Nitkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/247821.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rape seeds
size
physical properties
chemical properties
biofuel production
Opis:
The aim of the study was to determine the possibility of using small seeds of rape (diameter <1.6 mm,) perceived as a raw material of inferior nutritional quality, for the biofuels production. Research material was samples of industrial mass of rapeseeds originating from three Polish regions. The seed mass was cleaned in a sieve separator, removing mineral matter (stones), cereal grains, stems and dusts. Then, the sample was sifted through a set of sieves and two fractions were received: seeds with diameter >1.6 mm – sample F1 and with diameter < 1.6 mm – sample F2. Each fraction was characterized by its share in bulk mass, moisture content, 1000 seeds weight, yield of pressing, fat content and phosphorus content. Cold-pressed oils were determined in terms of total and unhydrated phosphorus content, acid value and fatty acids content. Fractionation by weight rapeseeds with using an industrial sieve separation may provide a simple method for improving the technological value of the raw material used for food purposes, and thus obtain fine seed that could be intended exclusively for the production of technical oil. Despite the stated inferior quality of small seeds, it was found that the increased values of some discriminants would not have impact on the technology of biofuel production and cost of production.
Źródło:
Journal of KONES; 2016, 23, 1; 391-395
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Emissions from the production of chemical fertilisers and fuel consumption in various technologies of energy crops cultivation
Emisje z produkcji nawozów sztucznych i zużycia paliw w różnych technologiach upraw roślin energetycznych
Autorzy:
Konieczna, A.
Pasyniuk, P.
Powiązania:
https://bibliotekanauki.pl/articles/36241.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
emission
chemical fertilizer
fertilizer production
greenhouse gas
fuel consumption
production technology
energy crop
Opis:
The paper presents the results of a study on the impact of the cultivation of crops which may serve as a substrate for a biogas plant on the atmosphere. Subjects addressed in the study cover a range of issues related to greenhouse gas (GHG) emissions from this area of agricultural activity. The amounts of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) emitted to the atmosphere in the selected cultivation technologies of beet, maize for silage and grasses were calculated. Emissions of GHG from chemical fertiliser production corresponding to the quantities used in the individual technologies were analysed, and amounts of the emitted above-mentioned pollutants originating from diesel fuel used during agricultural treatments conducted with the use of agricultural machinery were calculated. Emission values were expressed in equivalent units – E CO2eq. The study demonstrated that technologies which result in the highest quantities of emission are maize cultivation technologies – the average value for the study crops is 1 428 490.56 g haˉ¹ CO2eq. The lowest level of pollutants in the form of emitted greenhouse gases originates from grass cultivation and its average value is 904 661.28 g haˉ¹ CO2eq.
W artykule przedstawiono wyniki badań wpływu na atmosferę upraw roślin, które mogą posłużyć jako substrat do biogazowi. Zagadnienia poruszone w opracowaniu obejmują zakres problematyki związanej z emisją gazów cieplarnianych (GHG) z tego obszaru działalności rolniczej. Obliczono ilość emisji dwutlenku węgla (CO2), metanu (CH4) i podtlenku azotu (N2O) jakie zostały wyemitowane do atmosfery w wybranych technologiach uprawy buraków, kukurydzy na kiszonkę i traw. Rozważono emisje GHG z produkcji nawozów sztucznych odpowiadające ilościom zastosowanym w poszczególnych technologiach oraz wyliczone zostały ilości wyemitowanych wyżej wymienionych zanieczyszczeń pochodzących z zużytego oleju napędowego podczas przeprowadzonych za pomocą maszyn rolniczych zabiegów agrotechnicznych. Wartości emisji wyrażono w jednostce ekwiwalentnej – ECO2eq. Badania wykazały, że technologiami, z których pochodzą największe ilości emisji są technologie uprawy kukurydzy – średnia wartość z badanych upraw to 1 428 490,56 CO2eq. Najniższy poziom zanieczyszczeń emitowanych gazów cieplarnianych pochodzi z upraw traw i wynosi średnio 904 661,28 CO2eq.
Źródło:
Acta Agrophysica; 2016, 23, 4
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of Chemical Fertilizers (NPKSZn) and Missing of Major Nutrients (NPK) on Rice Yield
Autorzy:
Alam, Sardar Md Shahriar
Khatun, Macksuma
Islam, Md Shahidul
Chakma, Amitabh Shuva
Powiązania:
https://bibliotekanauki.pl/articles/1839173.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Chemical fertilizer
rice production
chemical properties of soil
soil fertility
soil productivity
Oryza sativa
Opis:
A field experiment was carried out with two varieties of rice (BR 11 and BRRI dhan 31) during Transplanted Aman season of 2018 in K. bearing deep grey terrace soil of Madhupur tract (AEZ 28) under Bangladesh Rice Research Institute (BRRI), Joydebpur. Gazipur. The objective of the study was to know the effect of NPKSZn on the growth and yield of BR 11 and BRRI dhan 31. There were ten treatment combinations with three replications. The treatments were complete (+NPKSZn), reverse complete (-NPKSZn), +N (+PKSZn), -N (+PKSZn), +P (+NKSZn), -P (+NKSZn), +K (+NPSZn) and -K (+NPSZn). The parameters under study were dry matter production, contents and uptake of N, P, K, S and Zn at active and maximum tillering stages, panicle number m’ and grain yield in both the varieties. All the parameters were positively influenced by the treatments under study. Growth and yield of both the varieties were largely affected by the missing nutrient treatment. The highest performance was found with the complete and reverse control treatments whereas the lowest was found with missing element treatments and of course, with control. BR 11 was found to be a better variety than BRRI dhan 31 in respect of yield and yield contributing characters under the treatments. It was also observed that recently fertilized reverse control plot behaved statistically the same as the long term fertilized complete treatment plot. Yield of rice was positively related to K uptake in both the varieties.
Źródło:
World Scientific News; 2021, 162; 133-147
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk assessment of surface waters associated with water circulation technologies on trout farms
Autorzy:
Sidoruk, M.
Koc, J.
Cymes, I.
Rafałowska, M.
Rochwerger, A.
Sobczyńska-Wójcik, K.
Skibniewska, K. A.
Siemianowska, E
Guziur, J.
Szarek, J.
Powiązania:
https://bibliotekanauki.pl/articles/125379.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
trout production
physical and chemical water properties
water contaminations
Opis:
Dynamic development of aquaculture has led to an increasing impact on the status of surface waters. Fish production generates wastes that, at high concentrations, may present a serious risk to the aquatic environment. Studies on the assessment of the impact of water management technologies in trout production on the quality of surface waters were conducted in 2011. Six farms were selected for the studies and were divided into two groups based on water management solutions (n = 3): farms with a flow through system (FTS) and farms with a recirculation aquaculture system (RAS). On all farms, water measurement points were set and they depicted the quality of in-flow water, the quality of water in ponds and the quality of outflow water. The studies did not demonstrate any impact of applied technology on electrolyte conductivity or calcium and magnesium concentrations in outflow water from a trout operation. In addition, it was found that the use of water for production purposes resulted in a slight increase in phosphorus and total nitrogen concentrations in waste waters.
Źródło:
Journal of Ecological Engineering; 2014, 15, 3; 76-81
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Termite Mound Soils for Sustainable Production of Bricks
Autorzy:
Legese, Alemu Mosisa
Kenate, Tesfaye Geneti
Feyessa, Fekadu Fufa
Powiązania:
https://bibliotekanauki.pl/articles/1845165.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
compressive strength
chemical composition
firing temperature
sustainable production
termite mound soil
Opis:
The article presents the alternative use of termite mound soils (TMSs) as full replacement for clay soils in brick production. TMSs from two localities, Jawaj and Sene, in Ethiopia were investigated for bricks production. The TMSs samples contained high SiO2 and Al2O3. The TMSs bricks were fired at different temperatures from 500 to 1,000°C. The obtained mean compressive strengths (σ), 18 and 14 MPa, were observed for bricks made from TMSs from Jawaj and Sene, respectively, at the optimum firing temperature of 700°C. The σ of TMSs bricks decreased as the firing temperature increased above 700°C, while for conventional clay soil brick, the σ increased with temperature beyond 700°C. The water absorptions and saturation coefficients of fired TMSs bricks decreased with increased firing temperature. The TMSs bricks meet the standard specification of dimension tolerance only along the height. All the TMSs bricks made from the two localities were not efflorescent. TMSs from Jawaj and Sene sites can be used as a raw material to replace the long-used clay soils for bricks production as a construction material for houses construction in rural and urban areas.
Źródło:
Studia Geotechnica et Mechanica; 2021, 43, 2; 142-154
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regional micronutrient supply in Hungary on the example of Fejer county
Autorzy:
Palmai, O
Powiązania:
https://bibliotekanauki.pl/articles/805246.pdf
Data publikacji:
1993
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
plant production
physical property
chemical property
soil
Fejer county
Hungary
soil texture
micronutrient supply
Opis:
The author gives information about regional micronutrient supply in Hungary on the example of Fejer county. The general information of the couny, the physical and chemical characteristics of the soils are shown. The Cu-, Zn-, and Mn-supply of the soils, the plant analysis results and the micronutrients balance-sheets are also discussed.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 400
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of catalytic processes for biodiesel production wastewater treatment
Autorzy:
Borralho, Teresa
Coelho, Solange
Estrelo, Andreia
Powiązania:
https://bibliotekanauki.pl/articles/205024.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cobalt
chemical oxygen demand
Fenton process
biodiesel production wastewater
catalytic advanced oxidation process
potassium monopersulphate
Opis:
The study of the possibility of removing organic compounds from wastewater originating from the biodiesel purification stage by two catalytic processes, HSO5-/transition metal and Fenton method has been presented. The source of the ion HSO5-is potassium monopersulphate (2KHSO5∙KHSO4∙K5SO4) (Oxone) that may be decomposed into radicals (OH., SO4-., SO5-.) by means of transition metal as Co(II). Different concentrations were used for both compounds and the combination ([Co2+] = 1.00μM/[HSO5-] = 5.00·10-2 M) achieved the highest COD removal (60%) and complete decomposition of the oxidant was verified for contact times of 45 min. This process has some advantages comparing to the conventional Fenton method such as the absence of the costly pH adjustment and the Fe(III) hydroxide sludge which characterize this treatment process. The Fenton process showed that the combination of [H2O2] = 2.00M/[Fe2+] = 0.70 M was the best and archived COD removal of 80%. The treatments studied in this research have achieved high COD removal, but the wastewater from the biodiesel purification stage presents very high parametric values of Chemical Oxygen Demand (667,000 mgO2/L), so the final COD concentration reached is still above the emission limit of discharge in surface water, according the Portuguese Law (Decree-Law 236/98). However, both treatments have proved to be feasible techniques for the pre-oxidation of the wastewater under study and can be considered as a suitable pre-treatment for this type of wastewaters. A rough economic analysis of both processes was, also, made.
Źródło:
Archives of Environmental Protection; 2019, 45, 2; 66-72
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production costs and residues evaluation of Crambe abyssinica as an energy feedstock
Autorzy:
Stolarski, M.
Krzyżaniak, M.
Śnieg, M.
Christou, M.
Alexopoulou, E.
Powiązania:
https://bibliotekanauki.pl/articles/363170.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
chemical properties
Crambe abyssinica
production cost
residues
thermophysical properties
właściwości chemiczne
koszty produkcji
właściwości termofizyczne
osad
Opis:
In Europe, like in other parts of the world, plant species predisposed for use as energy crops are searched for. Among the oil plants grown in European countries, rape is most important although rape oil is mainly a food product. On the other hand, Crambe abyssinica is an oil plant species which is not used to make human food or animal feeds. Besides, Crambe abyssinica oil has a high content of erucic acid, hence it has the potential to be processed into many different products in the power generation or chemical industries. This paper documents results of a field experiment conducted in north-eastern Poland, at the Experimental Station of the University of Warmia and Mazury in Olsztyn, located in Łężany (53°35’ N, 20°36’ E). The aim of this experiment was to determine costs of production of Crambe abyssinica grown in two variants (with and without herbicides). In addition, the quality of by-products (straw and cake) as energy feedstocks was evaluated. Costs of production of Crambe abyssinica seeds in the variant with herbicides were nearly 140€•ha-1 higher than in the variant without herbicides. The yield of pure seeds was by over 110kg•ha-1 higher in the herbicide-treated variant than in the treatment without weed control. However, the yield of straw was higher on fields without application of herbicides, but that straw had a higher moisture content due to the presence of weeds. The lower heating value of crambe straw was 15.3MJ•kg-1 on average and the straw content of ash was 5.68% D.M. The cake obtained from the crop had a much higher lower heating value (21.95MJ•kg-1) and ash content 6.41% D.M. Moreover, it was found to contain much more carbon and hydrogen, as well as five-fold more sulfur than straw.
Źródło:
Environmental Biotechnology; 2013, 9, 2; 59-64
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noxiousness and control of Qulema spp. larvae in the spring wheat
Autorzy:
Kaniuczak, Z
Powiązania:
https://bibliotekanauki.pl/articles/65811.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
spring wheat
control
wheat
plant protection
production technology
Qulema
cereal leaf beetle
cereal
insecticide
larva
chemical control
noxiousness
Opis:
In 1992-1994 studies were carried on the noxiousness, biological effectiveness and effects of chemical control of cereal leaf beetles (Qulema spp.) on the spring wheat. The larvae most frequently injured flag leaves, damaging them to 74.8%. The reduction of flag leaves surface area ranged 20.8-38.0%. The use of insecticides resulted in the increase of the grain yield by 12.5% on an average.
W latach 1992-1994 przeprowadzono badania nad szkodliwością larw skrzypionek dla roślin pszenicy jarej, biologiczną skutecznością zastosowanych insektycydów oraz efektami produkcyjnymi wykonanych zabiegów. Stwierdzono dużą szkodliwość skrzypionek dla pszenicy jarej. Larwy skrzypionek uszkodziły liście flagowe pszenicy jarej od 56,6% do 92,0%, średnio 74,8%. Redukcja powierzchni liści flagowych wynosiła od 20,8% do 38,0%. Otrzymane wyniki badań wskazują na zróżnicowanie podatności badanych odmian pszenicy jarej na uszkodzenia przez skrzypionki. Uzyskano bardzo dobrą skuteczność zwalczania larw skrzypionek w pszenicy jarej. Najlepszymi insektycydami w ich zwalczaniu były: Karate 025 EC, Fastac 10 EC, Bulldock 025 EC, Alpha Combi 26,25 EC. Stosowanie insektycydów spowodowało przyrost plonu ziarna od 0,4% do 24,8%, a liczba ziaren z kłosa uległa zwiększeniu średnio o 21,1%. Znaczący wpływ zastosowanych insektycydów zaznaczył się w stosunku do masy ziaren z kłosa, w porównaniu do kontroli wzrosła ona od 1,4% do 38,3%. W stosunku do kontroli nastąpił również wzrost masy 1000 ziaren. Wahał się on od 4,0% do 28,4%.
Źródło:
Journal of Plant Protection Research; 1997, 37, 1-2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of copper powder from electrolysis waste products
Poluchenie mednogo poroshka iz otkhodov ehlektroliticheskogo proizvodstva
Autorzy:
Ryabicheva, L.
Nikitin, Y.
Belyanskaya, I.
Powiązania:
https://bibliotekanauki.pl/articles/792872.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
electrolytic copper
copper powder
chemical property
physical property
technological property
ultrasonic dispersion
waste product
hydrostatic pressure
electrolysis
production
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nature and fodder value, yielding and calorific value of rushes of great manna grass Glycerietum maximae Hueck 1831 from extensively managed meadows
Walory przyrodniczo-użytkowe, plonowanie i wartość energetyczna szuwaru mannowego Glycerietum maximae Hueck 1831 z łąk użytkowanych ekstensywnie
Autorzy:
Grzelak, M.
Majchrzak, L.
Gaweł, E.
Piskier, T.
Kaczmarek, Z.
Gajewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/334912.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
Tematy:
biomass
chemical composition
higher heating value
energy value
production of energy
production of heat
energy source
biomasa
skład chemiczny
ciepło spalania
wartość energetyczna
produkcja energii
produkcja ciepła
źródło energii
Opis:
Studies concerning nature and fodder value, yielding and calorific value of the community Glycerietum maximae Hueck 1831 from extensively managed meadows were conducted in the years 2012-2015 in the Noteć valley varying in moisture content and trophic conditions. The analyses were made on a total of 28 relevés of the association, prepared according to the Braun-Blanquet method [1]. Recorded data included the taxonomic affiliation, botanical composition of the association, percentage shares of individual species in the community as well as the current habitat conditions based on Ellenberg's indicator values [3]: F, R and N, while moisture content conditions were determined according to Oświt [20]. Mean values of EIVs and Oświt's indexes showed a significant effect of moisture content, soil reaction and nitrogen content on trophic conditions, species composition of flora, yield and economic value as well as species diversity. These indicators indicate their applicability in the evaluation of directions in the transformation of rush flora. In their typical form the rushes are strongly dominated by one species Glyceria maxima, (S= IV and D =6485.0). This community due to strong inundation, late cutting, lack of fertilisation or cultivation has poor swards (FVS=2.2) of low fodder value and moderate nature value. However, thanks to huge yielding potential and relatively high fibre content it is one of the most promising energy crops, which is confirmed by the calculated lower heating value of 17.1 MJ·kg-1 DM and higher heating value of 18.1 MJ·kg-1 s.m.
Badania dotyczące walorów przyrodniczych, użytkowych, plonowania i wartości energetycznej zbiorowiska Glycerietum maximae Hueck 1831 z łąk ekstensywnie użytkowanych przeprowadzono w latach 2012-2015 w dolinie Noteci o zróżnicowanych warunkach wilgotnościowych i troficznych. W badaniach wykorzystano i przeanalizowano 28 zdjęć fitosocjologicznych wykonanych metodą Brauna-Blanqueta [1]. Określono systematykę, skład botaniczny zespołu, procentowy udział gatunków w zbiorowisku oraz aktualny stan warunków siedliskowych na podstawie wartości liczb wskaźnikowych Ellenberga [3]: F, R i N, a także identyfikację warunków wilgotnościowych metodą Oświta [20]. Średnie wartości wskaźników Ellenberga i Oświta, wykazały istotny wpływ wilgotności, odczynu gleby i zawartości azotu w glebie na warunki troficzne, skład gatunkowy flory, plon i wartość gospodarczą oraz różnorodność gatunkową. Wskaźniki te wskazują na możliwości ich zastosowania w ocenie kierunkowości przemian flory szuwaru. W typowej formie szuwar zdominowany jest przez jeden gatunek Glyceria maxima, (S= IV i D =6485,0). Zbiorowisko ze względu na silne podtopienia, późne koszenie, brak nawożenia i pielęgnacji ma ruń ubogą (Lwu = 2,2) o małej wartości użytkowej i umiarkowanych walorach przyrodniczych. Ze względu jednak na ogromny potencjał plonotwórczy oraz stosunkowo wysoką zawartość włókna, należy do najbardziej perspektywicznych roślin energetycznych. Potwierdza to wyliczono wartość energetyczna w MJ·kg-1 s.m., która wynosi 17,1 i ciepło spalania – 18,1 MJ·kg-1 s.m.
Źródło:
Journal of Research and Applications in Agricultural Engineering; 2018, 63, 2; 81-85
1642-686X
2719-423X
Pojawia się w:
Journal of Research and Applications in Agricultural Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chemical plant protection and its environmental impact in conditions of resowing after frost killing of winter crops
Autorzy:
Jankowiak, J.
Bienkowski, J.
Holka, M.
Dabrowicz, J.
Chudzinski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/61697.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
chemical protection
plant protection
environmental impact
weather condition
resowing
frost
winter crop
toxicity index
cost
intensive agriculture
agricultural production
Opis:
The weather conditions in winter 2011/2012 in Poland caused severe frost killing of winter crops (in most areas up to 90%) requiring spring resowing. This brought about a considerable impact of chemical plant protection. The paper presents results from two farms, belonging to a State Treasury company, with intensive agricultural production, located in the Wielkopolska voivodship. The number of plant protection treatments increased due to resowing from 39.9 to 81.4%, depending on the farm, and the amount of used p.p.p.(plant protection products) increased from 51.9 to 153.7%. Costs of used p.p.p. increased overall by 28.5%. The value of multi-criteria index of pesticides negative impact on the environment increased from 18.8 to 39.8% in farms 1 and 2. Identifying extremes in plant protection will allow more accurate than only on the basis of average values, planning and calculation of effect in production, as well as projections of adaptation processes to the changing conditions of production caused by the on-going global climatic changes.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2013, 2/IV
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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