Temat: nitrogen source - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Studies on the diversity of substrate composition in the culture medium of Kombucha microorganisms and its influence on the quality of synthesized cellulose
Autorzy:: Betlej, Izabela
Tematy:: bacterial cellulose
Kombucha
carbon and nitrogen source; Pokaż więcej
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Powiązania:: https://bibliotekanauki.pl/articles/24072016.pdf Link otwiera się w nowym oknie
Opis:: Studies on the diversity of substrate composition in the culture medium of Kombucha microorganisms and its influence on the quality of synthesized cellulose. The paper presents the results of the assessment of the effect of nutrients, specifically different nitrogen concentrations in the growth medium of Kombucha microorganisms, on the morphology of cellulose produced and its sorption capacity. Analyzing the obtained research results, we found that polymers formed in different growth environments differ in morphological structure and swelling index. The polymers synthesized on a nitrogen-rich substrate were characterized by a multilayer structure and a lower swelling index than the polymers obtained on a nutrient-poor substrate.
Ocena zróżnicowania składu podłoża w hodowli mikroorganizmów Kombucha i jego wpływ na jakość syntetyzowanej celulozy. W pracy przedstawiono wyniki oceny wpływu składników pokarmowych, a dokładnie różnych stężeń azotu w podłożu wzrostu mikroorganizmów Kombucha, na morfologię oraz zdolność do pochłaniania wody celulozy syntetyzowanej przez te mikroorganizmy. Analizując uzyskane wyniki badań, stwierdzono, że polimery powstałe w różnych środowiskach wzrostu różnią się pod względem struktury morfologicznej i zdolności do pochłaniania wody, wyrażonej wskaźnikiem spęcznienia. Polimer syntetyzowany na podłożu zasobnym w azot odznaczał się wyraźną wielowarstwową strukturą i mniejszym wskaźnikiem spęcznienia niż polimer otrzymany na podłożu ubogim w składniki odżywcze.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effects of different soil water content on biological nitrogen fixation at soybean
Autorzy:: Coskan, A.
Oz, H.
Atilgan, A.
Tematy:: soil water content
biological nitrogen fixation
soybean
nitrogen source
atmosphere
root nitrogen content; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Powiązania:: https://bibliotekanauki.pl/articles/61204.pdf Link otwiera się w nowym oknie
Opis:: Biological nitrogen fixation (BNF) is the process that provides organic nitrogenous compounds to the plants by using molecular nitrogen in atmosphere. Higher plants are not capable to use molecular nitrogen in atmosphere as a nitrogen source to generate essential proteins. Therefore plants either should be fertilized by adequate nitrogenous fertilizers or the microorganisms which are capable to produce nitrogenase should provide nitrogen to the plants by BNF. From among a number of factors affecting BNF, soil moisture content and ambient temperatures are considerably effective on the fixation rate. Therefore the global warming would be dramatically defective on BNF, thus effects of soil moisture as well as soil and ambient temperatures on BNF should evaluate prior rising temperature. A pot experiment was carried out to determine the effects of soil water contents on BNF. Four different soil water contents (%25, %50, %75 and %100 of water holding capacity) were adjusted either every 3 days or just after plants indicate wilting point. Non-inoculated pots were added to experiment as a control. The results revealed that BNF is affected by different level of soil water content. The mechanism of this effect would not be the direct effect of water, but the side effect of water on soil oxygen content; therefore, an aeration capability.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The assessment of influence of different nitrogen compounds and time on germination of Lupinus angustifolius seeds and chemical composition of final products
Autorzy:: Kasprowicz-Potocka, M.
Walachowska, E.
Zaworska, A.
Frankiewicz, A.
Tematy:: assessment
nitrogen compound
germination time
germination
Lupinus angustifolius
seed
chemical composition
final product
nutritional value
nitrogen source; Pokaż więcej
Wydawca:: Polskie Towarzystwo Botaniczne
Powiązania:: https://bibliotekanauki.pl/articles/57546.pdf Link otwiera się w nowym oknie
Opis:: The aim of the research was to determine changes in the chemical composition in lupin seeds during seed germination in a solution containing selected nitrogen compounds. Blue lupin seeds of the Neptun cultivar were germinated for 3 or 4 days in darkness, at 24°C in 1% solutions containing the following nitrogen compounds: urea, nitric acid, ammonium sulphate, methionine or yeast extract. The control consisted of seeds germinated in water. The presence of all nitrogen sources has resulted in a poorer growth of the sprouts as compared to seeds germinated in water. There was a significant increase in the true protein content as well as a significant decrease in the content of crude ash and alkaloids in the germinated seeds. The seeds germinated for 4 days had significantly higher total protein content and significantly lower content of nitrogen-free extract compounds and oligosaccharides as compared to the seeds germinated for 3 days. A significant influence of the nitrogen source on the concentration of some amino acids was found. Cystine was found to be absent in seeds germinated in the nitric acid solution, while there occurred a twofold increase in the cystine content and a fivefold increase in the methionine content in seeds germinated in the aqueous solution of methionine and an 50% increase in the cystine concentration was observed in seeds germinated in the yeast extract and ammonium sulphate solution. Methionine and cystine were the limiting amino acids in all the samples, accept of seeds germinated in the methionine solution were it was valine. Aqueous solutions of ammonium sulphate and yeast extract were found to have the most advantageous influence on the chemical composition of lupin germination products.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: ROS metabolism in Arabidopsis leaves under ammonium supply
Autorzy:: Podgorska, A.
Gieczewska, K.
Gardestrom, P.
Rasmusson, A.
Szal, B.
Tematy:: conference
reactive oxygen species
metabolism
Arabidopsis
leaf
ammonium
nitrogen source
stress symptom
oxidative stress; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/80032.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Wpływ wybranych źródeł azotu na przebieg procesu biosyntezy erytrytolu przez drożdże Yarrowia lipolytica
Effect of selected nitrogen sources on the course of erythritol biosynthesis process using Yarrowia lipolytica yeast
Autorzy:: Rywińska, A.
Paternoga, M.
Tomaszewska-Hetman, L.
Cybulski, K.
Rakicka, M.
Juszczyk, P.
Rymowicz, W.
Tematy:: Yarrowia lipolytica
erytrytol
źródło azotu
transketolaza
reduktaza erytrozy
erythritol
nitrogen source
transketolase
erythrose reductase; Pokaż więcej
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Powiązania:: https://bibliotekanauki.pl/articles/2073114.pdf Link otwiera się w nowym oknie
Opis:: Celem pracy była ocena wpływu źródła azotu na parametry produkcji erytrytolu i aktywność enzymów zaangażowanych w proces jego biosyntezy z glicerolu przez Yarrowia lipolytica. Wysokie stężenie oraz wydajność produkcji erytrytolu w hodowli z peptonem korelowały z najwyższą aktywnością enzymów odpowiedzialnych za asymilację glicerolu. Nieco niższe stężenie i wydajność produkcji erytrytolu, przy wysokiej szybkości objętościowej, uzyskano w hodowlach z nieorganicznymi źródłami azotu. Aktywność transketolazy i reduktazy erytrozy była w tych warunkach najwyższa.
The aim of this study was to examine the impact of nitrogen source on production parameters and the activities of enzymes involved in the erythritol biosynthesis from glycerol using Yarrowia lipolytica. The high concentration of erythritol and the high yield of its production in the culture with peptone were correlated with the highest activities of enzymes responsible for the glycerol assimilation. A slightly lower erythritol concentration and its production yield at high productivity was obtained in the cultures with inorganic nitrogen source. Moreover, in such conditions the activities of transketolase and erythrose reductase were the highest.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The Influence of Molasses on Nitrogen Removal in Wastewater Treatment With Activated Sludge
Autorzy:: Smyk, J.
Ignatowicz, K.
Tematy:: removing nitrogen from sewage
external carbon source
molasses
sewage treatment plant; Pokaż więcej
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:: https://bibliotekanauki.pl/articles/123119.pdf Link otwiera się w nowym oknie
Opis:: The paper presents the efficiency of nitrogen removal from wastewater using molasses as an external carbon source. The study was conducted during the municipal wastewater treatment process in two independent activated sludge chambers of SBR type. One of the chambers contained molasses as the source of easily available organic compounds. The study showed that the use of molasses as the external carbon source during wastewater treatment resulted in a higher efficiency of nitrogen removal than in the reactor where it no support using external carbon source was applied at the same time resulting low level of the COD value in the treated wastewater.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Usuwanie azotu ze ścieków komunalnych z wykorzystaniem zewnętrznego źródła węgla organicznego
Removal of Nitrogen from Municipal Wastewater Using an External Carbon Source
Autorzy:: Maciołek, P.
Janowska, B.
Szymański, K.
Tematy:: ścieki komunalne
azot ogólny
zewnętrzne źródło węgla organicznego
municipal wastewater
total nitrogen
external carbon source; Pokaż więcej
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Powiązania:: https://bibliotekanauki.pl/articles/1818057.pdf Link otwiera się w nowym oknie
Opis:: Discharge of raw wastewater which contains nutrients (nitrogen and phosphorus) can be hazardous for environment, due to its potential to cause eutrophication, oxygen reduction, and also toxicity in water bodies. Thus, it is needed to treat polluted water in terms of nutrient removal before discharging in environment. The study was conducted in the municipal wastewater treatment plant in Koszalin. It is one of the largest facilities in the Middle Pomerania. The planned flow capacity is about 40000 3 per day. The average daily flow rate entering the plant is 20 500 3 per day. This wastewater treatment plant operates with activated sludge systems. It utilizes high efficiency system for carbon, nitrogen and phosphorous removal from municipal wastewater. Currently, the total nitrogen content in the treated wastewater is approx. 10 mg N/dm3. In order to improve the efficiency of N removal within the existing capacities, the denitrification process can be enhanced by adding external carbon sources. The article presents the technological solutions aiming to improve the quality of treated wastewater. The research has proven that the use of an external carbon source, which was a commercial product KEM-CARBO GCM95, resulted in approx. 23% reduction in total nitrogen concentrations in treated wastewater. Preparation was dosed into the chambers of the denitrification a yield of 22 dm3/h. The results of studies were conducted in 2014. External carbon source was dosed at three different times – in April, June and late August. In 2015 were repeated. The ratio of organic pollutants in wastewater COD/BOD5 was approx. 2.0. On the other hand, the high ratio of BOD5/Nog ratio > 7.0 (the entire study period), indicating good susceptibility of wastewater on biological nitrogen removal in the process of denitrification. The use of preparation KEM-CARBO GCM 95, resulted in approx. 23% reduction in total nitrogen concentrations in treated wastewater. One of the practical methods to obtain required concentration of total nitrogen in treated wastewater is to increase the degree of internal recirculation. The practical method to obtain proper concentration of total nitrogen in treated wastewater is to increase the degree of internal recirculation and uniform distribution of wastewater on biological rectors.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Genetic correlation of source rocks and natural gas in the Polish Outer Carpathians and Paleozoic–Mesozoic basement east of Kraków (southern Poland)
Autorzy:: Kotarba, M. J.
Więcław, D.
Bilkiewicz, E.
Dziadzio, P.
Kowalski, A.
Tematy:: Polish Outer Carpathians
Paleozoic–Mesozoic basement
source rock potential
natural gas
biomarkers
stable carbon
hydrogen isotopes
nitrogen isotopes; Pokaż więcej
Wydawca:: Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Powiązania:: https://bibliotekanauki.pl/articles/2060588.pdf Link otwiera się w nowym oknie
Opis:: Natural gas-source rock correlations in the Polish Outer Carpathians and Paleozoic–Mesozoic basement in the Kraków–Brzesko–Nowy Sącz area (southern Poland) have been established. In the Dukla and Sub-Silesian units, mixed kerogen Type-II/III or III/II occurs. The organic matter is immature or low-mature. The Oligocene Menilite beds of the Silesian Unit are rich in TOC and contain gas-prone Type III kerogen of low maturity. In the Paleozoic–Mesozoic basement, the TOC content and residual hydrocarbon potential vary in the Middle and Upper Devonian strata, Mississippian carbonate and clastic facies and Middle Jurassic strata. The Paleozoic strata are capable of thermogenic hydrocarbon generation, while organic matter in the Middle Jurassic rocks is generally immature. Gaseous hydrocarbons accumulated both in the Silesian and Dukla units of the Polish Outer Carpathians and in the Mesozoic basement are genetically related to thermogenic and microbial processes. The Outer Carpathian natural gas was generated mainly from the Type-II/III kerogen of the Oligocene Menilite beds. The thermogenic gases from the Mesozoic basement were generated from Devonian and Mississippian (carbonate) Type-II and mixed II/III kerogens and probably from Silurian/Ordovician Type-II kerogen and Middle Jurassic Type-III/II kerogen occurring at more than 7 km depth. Microbial methane migrated into the Outer Carpathian flysch succession from the Miocene strata of the Carpathian Foredeep.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Precipitation and duff fall as natural sources of nitrogen and phosphorus for forest soils in the Slowinski National Park
Opad atmosferyczny i opad roślinny jako naturalne źródło azotu i fosforu dla gleb leśnych w Słowińskim Parku Narodowym
Autorzy:: Parzych, A.
Trojanowski, J.
Tematy:: precipitation
natural source
nitrogen
phosphorus
forest soil
Slowinski National Park
fall
plant
mixed forest
wood
leaf
needle
mineralization
ground cover
tree root
forest ecosystem; Pokaż więcej
Wydawca:: Akademia Pomorska w Słupsku
Powiązania:: https://bibliotekanauki.pl/articles/85037.pdf Link otwiera się w nowym oknie
Opis:: Every year forest soils are enriched with nitrogen and phosphorus compounds due to the fall of leaves and litter of conifer needles, mineralization of ground cover and decaying tree roots, as well as precipitation. The process has been examined in two forest ecosystems: a mixed forest (plot I) and a young wood (plot II). The overall fall of duff collected in the young wood of the Słowinski National Park (plot II) has been 3.014 t/ha·year, which constitutes 69.35% of the fall collected in the mixed forest (plot I) on this territory (4.346 t/ha·year). The maximum intensity of duff fall occurred in autumn months and constituted 62.36% and 64.20% of annual fall respectively. Totally, 46.96 kg/ha·year of N and P were supplied to the soil of the plot I and 22.04 kg/ha·year in the case of the plot II. The precipitation enriched the soils of the mixed forest by 33.66 kg/ha·year of nitrogen and 1.19 kg/ha·year of phosphorus, the soils of the young wood – by 23.06 kg/ha·year of nitrogen and 0.92 kg/ha·year of phosphorus.
Każdego roku gleby leśne wzbogacane są związkami azotu i fosforu pochodzącymi z opadających liści i igliwia, mineralizacji runa leśnego, gnijących korzeni drzew i krzaków oraz opadów atmosferycznych. Procesy te badano w dwóch ekosystemach leśnych Słowińskiego Parku Narodowego: w lesie mieszanym (działka I) i borze swieżym (działka II). Ogólny opad ścioły zebrany w swieżym borze wynosił 3,014 t ha-1rok-1 i był mniejszy niż zebrany w lesie mieszanym (4,346 t ha-1rok-1). Najbardziej intensywny opad ścioły obserwowano w miesiącach jesiennych i stanowił on odpowiednio 62,36% i 64,20% rocznego opadu. Ogólnie w ten sposób wprowadzono 46,96 kg ha-1rok-1 azotu i fosforu do gleby działki I i 22,04 kg ha-1rok-1 do gleby działki II. Opad atmosferyczny wzbogacił gleby lasu mieszanego w 33,66 kg ha-1rok-1 azotu i 1,19 kg ha-1rok-1 fosforu, a gleby boru swieżego odpowiednio 23,06 kg ha-1rok-1 i 0,92 kg ha-1rok-1.
Dostawca treści:: Biblioteka Nauki

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