Informacja

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

Wyszukujesz frazę "ammonia" wg kryterium: Temat


Tytuł:
Aspergillus niger, a dominant phylloplane coloniser, influences the activity of defense enzymes in Solanum lycopersicum
Autorzy:
Goswami, S.
Paul, P.K.
Sharma, P.D.
Powiązania:
https://bibliotekanauki.pl/articles/2084798.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Aspergillus niger
phylloplane
peroxidase
phenylalanine ammonia lyase
polyphenol oxidase
Solanum lycopersicum
tyrosine ammonia lyase
Opis:
Phylloplane microbes have been studied as strategic tools in management against plant pathogens. Non-pathogenic bacteria and fungi have been applied as crop protectants against various plant diseases. The present study aimed at evaluating the potentiality of Aspergillus niger spores in altering the activity of four key enzymes related to defense in tomato. The experiment was designed such that two groups of 50 tomato plants were considered: group 1 – sprayed with autoclaved distilled water (control) and group 2 – sprayed with A. niger spores. Spraying was carried out under aseptic conditions. The experimental parameters included analysis of the activity of peroxidase (POX), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL) and tyrosine ammonia lyase (TAL) as well as expression of POX and PPO isoforms. The results demonstrated an inductive effect of A. niger on the activity of POX, PPO, PAL and TAL. Enhanced expression of POX and PPO isoforms was also observed. The results indicated that A. niger can be considered probiotic for the management of tomato against its phytopathogens.
Źródło:
Journal of Plant Protection Research; 2019, 59, 4; 512-518
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Survey of applied ammonia mitigation technologies in the Hungarian pig production practice
Autorzy:
Vojtela, Tibor
Magyar, Marianna
Koós, Sándor
Péterfalvi, Nóra
Fenyvesi, László
Pirkó, Béla
Powiązania:
https://bibliotekanauki.pl/articles/2173786.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ammonia emissions
pig production
manure management
abatement techniques
Opis:
The Directive on National Emission Ceilings specifies the reduction of ammonia (NH3) emissions among other air pollutants, which is most significant for the agricultural sector. The ammonia emission limit set for Hungary was a 10% reduction by 2020, while the target of 32% should be reached by 2030 compared to the 2005 reference year. The paper presents the results of a survey on pig production technology in Hungary from 97 domestic farms. The study aims to know the level of implementation of reduction techniques in livestock production and manure management and highlights the need for further improvements in this production sector. The research found that the application of ammonia reduction techniques was not considered widespread, either in livestock buildings or in manure storage (treatment) and during field application. For almost all (more than 90%) pig production groups, the housing systems were the reference without additional emission reduction. For manure storage, farms have insulated storage under the current regulation, however, significantly more emission reduction technologies were in the variant without cover or crust. Slurry spreading was mainly used with manure application techniques, but more emission-friendly injection and band spreading were also emerging. Besides the expected immediate incorporation, a high proportion of manure was applied between 12 and 24 hours or even after 24 hours. In the studied elements of manure management, significant improvements are needed in applying techniques to reduce ammonia emissions. Effective results can be achieved even by shortening the time between manure application and incorporation with efficient work organization.
Źródło:
Archives of Environmental Protection; 2022, 48, 1; 83--91
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A thermodynamic study on catalytic decomposition of hydrazine in a space thruster
Autorzy:
Pakdehi, Shahram
Shirvani, Fatemeh
Zolfaghari, Reihaneh
Powiązania:
https://bibliotekanauki.pl/articles/240211.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
catalytic thruster
hydrazine
ammonia
specific impulse
thermodynamic
analysis
Opis:
Most satellites stationed in space use catalytic propulsion systems for attitude control and orbit adjustment. Hydrazine is consumed extensively as liquid monopropellant, in the thrusters. Catalytic reactor is the most important section in the catalytic thruster. Ammonia and nitrogen gases are produced as a result of complete catalytic decomposition of hydrazine in the reactor, causing an increase in temperature and a rise in specific impulse. Ammonia is subsequently decomposed, leading to nitrogen and hydrogen gases. Decomposition of ammonia leads to a decrease in temperature, molecular weight and specific impulse. The latter phenomenon is unavoidable. The effect of ammonia decomposition on the reactor temperature, molecular weight of gaseous products and conclusively on specific impulse was studied in this article. At adiabatic state, thermodynamic analysis revealed that the maximum and minimum temperatures were 1655 K and 773 K, respectively. The highest molecular weight was obtained at ammonia conversion of zero and the lowest when ammonia conversion was 100%. The maximum specific impulse (305.4 S) was obtained at ammonia conversion of zero and completely conversion of ammonia, the minimum specific impulse (about 213.7 s) was obtained. For specific impulse, the result of thermodynamic calculation in this work was validated by the empirical results.
Źródło:
Archives of Thermodynamics; 2019, 40, 4; 151-166
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ammonia emission from livestock production in Poland and its regional diversity, in the years 2005–2017
Emisja amoniaku z produkcji zwierzęcej w Polsce i jej regionalne zróżnicowanie, w latach 2005-2017
Autorzy:
Mielcarek-Bocheńska, Paulina
Rzeźnik, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/204676.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mitigation
livestock production
ammonia emission
ograniczanie
produkcja zwierzęca
emisja amoniaku
Opis:
Agriculture is a significant source of gaseous pollutants such as ammonia, methane, nitrous oxide and volatile organic compounds. Ammonia is particularly important due to the high emission and local, as well as global impact on the environment. The release of NH3 is one of the main ways of nitrogen emission to the atmosphere and it contributes to its subsequent deposition. The aim of the study was to analyze ammonia emissions from animal production in Poland in 2005–2017, its regional diversity and possibilities of its reduction in agriculture. The ammonia emission was calculated for the animal production groups according to the NFR classification. The values of ammonia emission were calculated based on ammonia emission factors used by KOBIZE, in accordance with the EMEP/EEA methods. In 2017, the NH3 emission from Polish agriculture amounted 288 Gg and it accounted for 96% of the emission in 2005. Ammonia emission from livestock production, in 2005–2017, on average accounted for 79.8% of agricultural emissions. The largest share had the cattle (51%) and swine (30%) production. The NH3 emissions differed strongly between provinces. The emission density (kg NH3·km-2·year-1) in provinces with intensive livestock production was about 5.5 times higher than in regions, where livestock production was the lowest. The mitigation strategies should be implemented primarily in provinces where reduction potential is the largest. The assessment of the reduction potential should take into account the NH3 emission per 1 km2 and the low NH3 emission technologies, which are already applied in the regions.
Rolnictwo jest znaczącym źródłem zanieczyszczeń gazowych między innymi: amoniaku, metanu, podtlenku azotu i lotnych związków organicznych. Amoniak jest szczególnie istotny ze względu na znaczną emisję i lokalne oraz globalne oddziaływanie na środowisko. Uwalnianie NH3 jest jednym z głównych źródeł emisji azotu do atmosfery i przyczynia się do jego późniejszej depozycji. Celem pracy była analiza emisji amoniaku z produkcji zwierzęcej w Polsce w latach 2005-2017, jej regionalnego zróżnicowania oraz możliwości jej ograniczania z rolnictwa. Emisję amoniaku obliczono dla grup zwierząt zgodnych z klasyfikacją NFR. Do tego celu wykorzystano wartości współczynników emisji amoniaku stosowanych przez KOBIZE, zgodnie z metodami EMEP/EEA. W 2017 r. emisja NH3 z polskiego rolnictwa wyniosła 288 Gg i stanowiła 96% tej emisji z 2005 r. Emisja amoniaku z produkcji zwierzęcej, w latach 2005-2017, stanowiła średnio 79,8% emisji z rolnictwa. Największy udział w tej emisji miała produkcja bydła (51%) i trzody chlewnej (30%). Emisje NH3 różniły się znacznie między województwami. Gęstość emisji (kgNH3km-2rok-1) w województwach o intensywnej produkcji zwierzęcej była około 5,5 razy większa niż w województwach, w których produkcja zwierzęca była najmniejsza. Osiągnięcie unijnych poziomów redukcji emisji NH3 wyznaczonych dla Polski, będzie wymagało zmian w produkcji zwierzęcej i roślinnej. Strategie ograniczania powinny być wprowadzane w pierwszej kolejności w regionach, w których występuje duży potencjał redukcji, czyli w województwach o wysokiej gęstości emisji NH3.
Źródło:
Archives of Environmental Protection; 2019, 45, 4; 114-121
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Layered thin film nanostructures of Pd/WO3-x as resistance gas sensors
Autorzy:
Urbańczyk, M.
Maciak, E.
Gut, K.
Pustelny, T.
Jakubik, W.
Powiązania:
https://bibliotekanauki.pl/articles/200121.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tungsten trioxide
palladium
layered nanostructure
resistance sensor
nitrogen dioxide
ammonia
Opis:
Layered nanostructures of tungsten trioxide WO3-x about 62 nm thick, with a very thin film of palladium (about 3.3 nm) on the top, have been studied for gas-sensing application at temperatures 50.C and 120.130.C and low NO2 and NH3 concentrations in 6%, 30% or 45% relative humidity in the air. Thin film WO3-x nanostructures were obtained by vacuum deposition on a common Si-SiO2 substrate at room temperature and 120.C. The palladium was coated by vacuum evaporation at room temperature and 4 �E 10.6 mbar on WO3-x layers obtained at two different substrate temperatures. The average rate of growth of the films, controlled by a QCM, was 0.1.0.2 nm/s. A multi-channel (four-channel interdigital gold electrodes) planar resistance gas sensor structure was used in the experiments. The surface of the nanostructures was characterized by means of the AFM method. Good sensor results have been observed at these layered nanostructures with an increasing resistance for NO2 molecules and decreasing resistance for NH3 molecules in a humid air atmosphere. The interaction and recovery speed were higher in the case of the nanostructure obtained at room temperature.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 401-407
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the absorbing pervaporation technique for ammonia recovery after the haber process
Autorzy:
Atlaskin, A.
Petukhov, A. N.
Yanbikov, N. R.
Salnikova, M.E.
Sergeeva, M. S.
Vorotyntsev, V. M.
Vorotyntsev, I. V.
Powiązania:
https://bibliotekanauki.pl/articles/184857.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gas separation
absorbing pervaporation
ammonia
process intensification
membrane
separacja gazów
amoniak
intensyfikacja procesu
membrana
Opis:
A novel absorbing pervaporation hybrid technique has been evaluated experimentally for the recovery of ammonia from the gas mixture in a recycle loop of synthesis plants. This process of hybridization brings together the combination of energy-efficient membrane gas separation based on poly(dimethylsiloxane) poly(diphenylsilsesquioxane) with a high selective sorption technique where a water solution with polyethylene glycol 400 (PEG-400) was used as the liquid absorbent. Process efficiency was studied using the pure and mixed gases. The influence of PEG-400 content in aqueous solutions on process selectivity and separation efficiency was studied. The ammonia recovery efficiency evaluation of an absorbing pervaporation technique was performed and compared with the conventional membrane gas separation. It was shown that the absorbing pervaporation technique outperforms the conventional membrane method in the whole range of productivity, producing the ammonia with a purity of 99.93 vol.% using the PEG 80 wt.% solution. The proposed method may be considered as an attractive solution in the optimization of the Haber process.
Źródło:
Chemical and Process Engineering; 2018, 39, 3; 323--333
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odors and ammonia emission from a mechanically ventilated fattening piggery on deep litter in Poland
Emisja odorów i amoniaku z tuczarni z wentylacją mechaniczną na głębokiej ściółce w Polsce
Autorzy:
Mielcarek-Bocheńska, Paulina
Rzeźnik, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2203115.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ammonia
odors
emission factor
piggery
deep litter
amoniak
odory
poziom emisji
hodowla świń
głęboka ściółka
Opis:
Livestock production is the basis of global food production and it is a serious threat to the environment. Significant environmental pollutants are odors and ammonia (NH3) emitted from livestock buildings. The aim of the study was to determine the concentration and emission factors of ammonia and odors, in the summer season, from a deep-litter fattening house. The research was carried out during summer in a mechanically ventilated fattening piggery located in the Greater Poland Voivodeship. Ammonia concentrations were measured using photoacoustic spectrometer Multi Gas Monitor Innova 1312, and odor concentrations were determined by dynamic olfactometry according to EN 13725:2003 using a TO 8 olfactometer. The NH3 emission factors from the studied piggery, in summer, ranged from 8.53 to 21.71 g·day-1·pig-1, (mean value 12.54±4.89 g·days-1·pig-1). Factors related to kg of body mass were from 0.11 to 0.23 g·day-1·kg b.m.-1 (mean value 0.17±0.06 g·day-1·kg b.m.-1). Odor concentrations in the studied piggery were from 755 to 11775 ouE·m-3 and they were diversified (coefficient of variation 43.8%). The mean value of the momentary odor emission factors was 179.5±78.7 ouE·s-1·pig-1. Factor related to kg of body mass was 2.27±1.71 ouE·s-1·kg b.m.-1. In Poland and many other countries, the litter systems of pigs housing are still very popular. Therefore, there is a need to monitor the pollutant emissions from such buildings to identify the factors influencing the amount of this emission. Another important issue is to verify whether the reduction techniques, giving a measurable effect in laboratory research, bring the same reduction effect in production uildings.
Produkcja zwierzęca jest podstawą globalnej produkcji żywności i jednocześnie stanowi poważne zagrożenie dla środowiska. Istotnymi zanieczyszczeniami środowiska są emitowane z budynków inwentarskich odory i amoniak (NH3). Celem pracy było określenie stężenia oraz emisji amoniaku i odorów, w sezonie letnim, z tuczarni na głębokiej ściółce oraz wyznaczenie wskaźników emisji amoniaku i odorów. Badania były prowadzone w sezonie letnim, w mechanicznie wentylowanej tuczarni zlokalizowanej w województwie wielkopolskim. Stężenia amoniaku zmierzono za pomocą spektrometru fotoakustycznego Multi Gas Monitor Innova 1312, a stężenia zapachowe oznaczono metodą olfaktometrii dynamicznej zgodnie z normą EN 13725:2003 przy użyciu olfaktometru TO8. W badanej tuczarni na głębokiej ściółce dobowe wartości wskaźnika emisji NH3, w sezonie letnim, wahały się od 8,53 do 21,71 g·doba-1·szt.-1 (średnio 12,54±4,89 g·doba-1·szt.-1). W odniesieniu do kilograma masy ciała wynosiły od 0,11 do 0,23 g·doba-1·kg m.c.-1 (średnio 0,17±0,06 g·doba-1·kg m.c.-1). Stężenie odorów w badanej tuczarni wynosiło od 755 do 11775 ouE·m-3 i było zróżnicowane (współczynnik zmienności 43,8%). Średnia wartość współczynnika chwilowej emisji odorów wynosiła 179,5±78,7 ouE·s-1·szt.-1. W przeliczaniu na kg masy ciała świni wskaźnik ten był równy 2,27±1,71 ouE·s-1·kg m.c.-1. W Polsce i wielu innych krajach wciąż dużą popularnością cieszą się systemy utrzymania świń na ściółce. Istnieje więc potrzeba monitorowania emisji zanieczyszczeń z takich obiektów, celu zidentyfikowania czynników mających wpływ na wielkość tej emisji. Innym ważnym zagadnieniem jest weryfikacja czy techniki ograniczające uwalnianie zanieczyszczeń, dające mierzalny efekt podczas badań laboratoryjnych, przynoszą ten sam skutek redukcyjny w obiektach produkcyjnych.
Źródło:
Archives of Environmental Protection; 2022, 48, 2; 86--94
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Higher induction of defense enzymes and cell wall reinforcement in maize by root associated bacteria for better protection against Aspergillus niger
Autorzy:
Jha, Y.
Powiązania:
https://bibliotekanauki.pl/articles/2084643.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Aspergillus niger
β-1
3-glucanase
biotic factor
phenylalanine ammonia lyase
RAPD analysis
rhizosphere
root associated bacteria
Opis:
Root associated bacteria were isolated from Suaeda nudiflora and two isolates were selected for this study: rhizospheric Bacillus megaterium and endophytic Pseudomonas aeruginosa. These isolates were inoculated into maize variety Narmada Moti during its germination. TTC (2, 3, 5-triphenyl tetrazolium chloride) staining was used to confirm the association of the isolates with the maize root. The effects of these root associated bacteria were tested alone and in combinations for cell wall reinforcement and the induction of defense enzymes such as phenylalanine ammonia lyase (PAL) and β-1,3-glucanase in the presence of fungal pathogen Aspergillus niger in maize. The results indicated that the rhizospheric bacteria had a greater fight response to fungal infection than the endophhytic bacteria due to cell wall lignification as well as the rapid induction of higher concentrations of defense related enzymes.
Źródło:
Journal of Plant Protection Research; 2019, 59, 3; 341-349
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of the phenylalanine ammonia lyase gene from the rubber tree (Hevea brasiliensis Müll. Arg.) and differential response during Rigidoporus microporus infection
Autorzy:
Sangsil, P.
Nualsri, C.
Woraathasin, N.
Nakkanong, K.
Powiązania:
https://bibliotekanauki.pl/articles/66099.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phenylalanine ammonia lyase
gene expression
rubber
tree
Hevea brasiliensis
plant response
Rigidoporus microporus
plant infection
root rot disease
Opis:
Phenylalanine ammonia lyase (PAL) is a specific branch point enzyme of primary and secondary metabolism. It plays a key role in plant development and defense mechanisms. Phenylalanine ammonia lyase from Hevea brasiliensis (HbPAL) presented a complete open reading frame (ORF) of 2,145 bp with 721 encoded amino acids. The sequence alignment indicated that the amino acid sequence of HbPAL shared a high identity with PAL genes found in other plants. Phylogenetic tree analysis indicated that HbPAL was more closely related to PALs in Manihot esculenta and Jatropha curcas than to those from other plants. Transcription pattern analysis indicated that HbPAL was constitutively expressed in all tissues examined, most highly in young leaves. The HbPAL gene was evaluated by quantitative real-time PCR (qRT-PCR) after infection with Rigidoporus microporus at 0, 12, 24, 48, 72 and 96 hours post inoculation. The expression patterns of the PAL gene differed among the three rubber clones used in the study. The transcription level of the white root rot disease tolerant clone, PB5/51 increased sharply during the latter stages of infection, while it was relatively subdued in the white root rot disease susceptible clones, RRIM600 and BPM24. These results suggest that the HbPAL gene may play a role in the molecular defense response of H. brasiliensis to pathogen attack and could be used as a selection criterion for disease tolerance.
Źródło:
Journal of Plant Protection Research; 2016, 56, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Drechslera graminea on total soluble proteins and defense enzymes of barley
Autorzy:
Goel, N.
Jaiswal, G.
Srivastava, A.K.
Paul, P.K.
Goel, A.
Powiązania:
https://bibliotekanauki.pl/articles/66670.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
barley
Hordeum vulgare
defense enzyme
Drechslera graminea
peroxidase
phenylalanine lyase
polyphenol oxidase
protein
soluble protein
tyrosine ammonia lyase
Opis:
Barley phylloplane is seriously colonized by Drechslera graminea, the causal agent of leaf stripe disease in the hos. The present study involved the elucidation of alterations induced in the protein content of the host due to Drechslera infection. Naturally growing barley plants were obtained from fields and Drechslera graminea was isolated and identified from diseased plants’ leaves. After identification and preparation of the pure culture, the pathogen was inoculated on plants grown under aseptic and controlled laboratory conditions. Changes in the total soluble cytoplasmic proteins and defense enzymes of the host such as polyphenol oxidase (PPO), peroxidase (POX), phenylalanine lyase (PAL) and tyrosine ammonia lyase (TAL) were observed up to 5 h after inoculation. The results demonstrated a significant effect of the pathogen on the cytoplasmic protein expression of the host as well as in its defense system.
Źródło:
Journal of Plant Protection Research; 2018, 58, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy and economic analysis of the carbon dioxide capture installation with the use of monoethanolamine and ammonia
Autorzy:
Bochon, K.
Chmielniak, T.
Powiązania:
https://bibliotekanauki.pl/articles/240312.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
CO2 separation
carbon capture
MEA
chilled ammonia
economic analysis
separacja CO2
wychwytywanie dwutlenku węgla
schłodzony amoniak
analiza ekonomiczna
Opis:
In the study an accurate energy and economic analysis of the carbon capture installation was carried out. Chemical absorption with the use of monoethanolamine (MEA) and ammonia was adopted as the technology of carbon dioxide (CO2) capture from flue gases. The energy analysis was performed using a commercial software package to analyze the chemical processes. In the case of MEA, the demand for regeneration heat was about 3.5 MJ/kg of CO2, whereas for ammonia it totalled 2 MJ/kg CO2. The economic analysis was based on the net present value (NPV) method. The limit price for CO2 emissions allowances at which the investment project becomes profitable (NPV = 0) was more than 160 PLN/Mg for MEA and less than 150 PLN/Mg for ammonia. A sensitivity analysis was also carried out to determine the limit price of CO2 emissions allowances depending on electricity generation costs at different values of investment expenditures.
Źródło:
Archives of Thermodynamics; 2015, 36, 1; 93-110
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Polish strains of Trichoderma in cucumber plant growth promotion and induction of defence reaction against Rhizoctonia solani
Autorzy:
Nawrocka, J.
Malolepsza, U.
Szczech, M.
Powiązania:
https://bibliotekanauki.pl/articles/81297.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
Polish strain
Trichoderma
cucumber
Cucumis sativus
plant growth
biomass production
infection
Rhizoctonia solani
phenylalanine ammonia lyase
total phenol
defense reaction
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nitrogen Availability Of Nitriding Atmosphere In Controlled Gas Nitriding Processes
Rozporządzalności azotu atmosfery azotującej w procesach regulowanego azotowania gazowego
Autorzy:
Michalski, J.
Burdyński, K.
Wach, P.
Łataś, Z.
Powiązania:
https://bibliotekanauki.pl/articles/351821.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
controlled gas nitriding
nitrogen availability
nitriding potential
ammonia dissociation rate
alloyed steels
kontrolowane azotowanie gazowe
rozporządzalność azotu
potencjał azotowy
stopień dysocjacji amoniaku
stale stopowe
Opis:
Parameters which characterize the nitriding atmosphere in the gas nitriding process of steel are: the nitriding potential KN, ammonia dissociation rate α and nitrogen availability mN2. The article discusses the possibilities of utilization of the nitriding atmosphere’s nitrogen availability in the design of gas nitriding processes of alloyed steels in atmospheres derived from raw ammonia, raw ammonia diluted with pre-dissociated ammonia, with nitrogen, as well as with both nitrogen and pre-dissociated ammonia. The nitriding processes were accomplished in four series. The parameters selected in the particular processes were: process temperature (T), time (t), value of nitriding potential (KN), corresponding to known dissociation rate of the ammonia which dissociates during the nitriding process (α). Variable parameters were: nitrogen availability (mN2), composition of the ingoing atmosphere and flow rate of the ingoing atmosphere (FIn).
Parametrami charakteryzującymi atmosferę azotującą w procesie azotowania gazowego stali są: potencjał azotowy KN, stopień dysocjacji amoniaku α oraz rozporządzalność azotu mN2. W artykule omówiono możliwości wykorzystania rozporządzalności azotu atmosfery azotującej w projektowaniu procesów azotowania gazowego stali stopowych w atmosferach azotujących uzyskanych z amoniaku, z amoniaku rozcieńczonego zdysocjowanym amoniakiem, azotem oraz azotem i zdysocjowanym amoniakiem. Procesy azotowania wykonano w czterech seriach. Parametrami ustalonymi w poszczególnych seriach była temperatura procesu (T), czas (t), wartość potencjału azotowego (KN), któremu odpowiada określona wartość stopnia dysocjacji amoniaku zdysocjowanego podczas procesu azotowania (α). Parametrami zmiennymi była rozporządzalność azotu (mN2), skład atmosfery wlotowej i natężenie przepływu atmosfery azotującej wlotowej (Fw).
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2A; 747-754
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of PCR-DGGE and Nested-PCR-DGGE Approach for Ammonia Oxidizers Monitoring in Membrane Bioreactors’ Activated Sludge
zalety i wady wykorzystywania techniki nested-PCR w monitoringu bakterii utleniających amoniak w osadzie czynnym bioreaktora membranowego
Autorzy:
Ziembińska-Buczyńska, A.
Wiszniowski, J.
Ciesielski, S.
Powiązania:
https://bibliotekanauki.pl/articles/204755.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ammonia oxidizing bacteria
AOB
16S rRNA gene
Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis
PCR-DGGE
nested-PCR
utlenianie amoniaku
bakteria utleniająca amoniak
gen kodujący 16S rRNA
Opis:
Nitritation, the first stage of ammonia removal process is known to be limiting for total process performance. Ammonia oxidizing bacteria (AOB) which perform this process are obligatory activated sludge habitants, a mixture consisting of Bacteria, Protozoa and Metazoa used for biological wastewater treatment. Due to this fact they are an interesting bacterial group, from both the technological and ecological point of view. AOB changeability and biodiversity analyses both in wastewater treatment plants and lab-scale reactors are performed on the basis of 16S rRNA gene sequences using PCR-DGGE (Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis) as a molecular biology tool. AOB researches are usually led with nested PCR. Because the application of nested PCR is laborious and time consuming, we have attempted to check the possibility of using only first PCR round to obtain DGGE fingerprinting of microbial communities. In this work we are comparing the nested and non-nested PCR-DGGE monitoring of an AOB community and presenting advantages and disadvantages of both methods used. The experiment revealed that PCR technique is a very sensitive tool for the amplification of even a minute amount of DNA sample. But in the case of nested-PCR, the sensitivity is higher and the template amount could be even smaller. The nested PCR-DGGE seems to be a better tool for AOB community monitoring and complexity research in activated sludge, despite shorter fragments of DNA amplification which seems to be a disadvantage in the case of bacteria identification. It is recommended that the sort of analysis approach should be chosen according to the aim of the study: nested-PCR-DGGE for community complexity analysis, while PCR-DGGE for identification of the dominant bacteria.
Nitiritacja – pierwszy etap nitryfikacji, jest uznawany za krok limitujący przebieg całości procesu utleniania amoniaku. Bakterie utleniające amoniak (ang. ammonia oxidizing bacteria, AOB), które prowadzą ten proces są stałymi mieszkańcami osadu czynnego – mieszaniny bakterii, Protozoa i Metazoa, wykorzystywanych do biologicznego oczyszczania ścieków. Z tego powodu są one interesujące zarówno z punktu widzenia technologii, jak i ekologii mikroorganizmów. Analizy zmienności i bioróżnorodności bakterii utleniających amoniak, zarówno w oczyszczalni ścieków, jak i w reaktorach w skali laboratoryjnej, są prowadzone w oparciu o sekwencje genu kodującego 16S rRNA z użyciem metody biologii molekularnej, jaką jest PCR-DGGE (Polymerase Chain Reaction – Denaturing Gradient Gel Electrophoresis). Analizy te są zazwyczaj prowadzone techniką tzw. nested-PCR. Ze względu na fakt, że metoda ta wymaga większego nakładu pracy i czasu, niż tradycyjny jednoetapowy PCR (ang. non-nested PCR) podjęto próbę sprawdzenia możliwości zastosowania techniki jednoetapowego PCR do uzyskania wzorów prążkowych DGGE bakterii utleniających amoniak. W tej pracy zaprezentowano wyniki analizy PCR-DGGE z użyciem technik nested i non-nested PCR oraz podjęto próbę wykazania ich wad i zalet.
Źródło:
Archives of Environmental Protection; 2014, 40, 4; 31-38
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of BTH and arbutin on PAL activity and phenolic compounds content in cucumber leaves infected with Pseudomonas syringae pv. lachrymans
Autorzy:
Sklodowska, M.
Wielanek, M.
Gajewska, E.
Kuzniak, E.
Powiązania:
https://bibliotekanauki.pl/articles/81241.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
benzo[1,2,3]thiadiazole-7-carbothioic acid S-methyl ester
phenylalanine ammonia lyase
phenolic compound content
flavonoids content
arbutin
leaf spot
Pseudomonas syringae pv.lachrymans
cucumber leaf
infection
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł

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