Готові списки джерел за темами / Urease inhibition

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Добірка наукової літератури з теми "Urease inhibition"

Автор: Grafiati
Опубліковано: 3 червня 2025
Оновлено: 31 липня 2025

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Статті в журналах з теми "Urease inhibition"

1

Mohammed, Salih Osman, Sayed H. El El Ashry, Asaad Khalid, et al. "Expression, Purification, and Comparative Inhibition of Helicobacter pylori Urease by Regio-Selectively Alkylated Benzimidazole 2-Thione Derivatives." Molecules 27, no. 3 (2022): 865. http://dx.doi.org/10.3390/molecules27030865.

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Анотація:
The urease enzyme has been an important target for the discovery of effective pharmacological and agricultural products. Thirteen regio-selectively alkylated benzimidazole-2-thione derivatives have been designed to carry the essential features of urease inhibitors. The urease enzyme was isolated from Helicobacter pylori as a recombinant urease utilizing the His-tag method. The isolated enzyme was purified and characterized using chromatographic and FPLC techniques showing a maximal activity of 200 mg/mL. Additionally, the commercial Jack bean urease was purchased and included in this study for
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2

Zusfahair, Zusfahair, Amin Fatoni, Dian Riana Ningsih, and Anung Riapanitra. "Determination of Cu and Pb concentrations based on urease activity inhibition of Durio zibethinus L. seeds." Molekul 16, no. 2 (2021): 92. http://dx.doi.org/10.20884/1.jm.2021.16.2.736.

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Анотація:
The determination of heavy metal concentrations has been carried out using sophisticated instruments, and therefore a simple and reliable alternative method is needed as a comparison. The study aimed to determine Cu and Pb concentration of standard solution using the urease activity inhibition method of Durio zibethinus L. seeds. The research started with urease extraction from Durio D. zibethinus L. seeds. The activity of the obtained extract was determined using the Nessler method. The optimum substrate concentration was also determined. Urease activity inhibition was carried out using vario
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3

Tan, Lirong, Jiyan Su, Dianwei Wu, et al. "Kinetics and Mechanism Study of Competitive Inhibition of Jack-Bean Urease by Baicalin." Scientific World Journal 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/879501.

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Анотація:
Baicalin (BA) is the principal component of Radix Scutellariae responsible for its pharmacological activity. In this study, kinetics and mechanism of inhibition by BA against jack-bean urease were investigated for its therapeutic potential. It was revealed that the IC50of BA against jack-bean urease was2.74 ± 0.51 mM, which was proved to be a competitive and concentration-dependent inhibition with slow-binding progress curves. The rapid formation of initial BA-urease complex with an inhibition constant ofKi=3.89 × 10−3 mM was followed by a slow isomerization into the final complex with an over
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4

Kataria, Ritu, and Anurag Khatkar. "Lead Molecules for Targeted Urease Inhibition: An Updated Review from 2010 -2018." Current Protein & Peptide Science 20, no. 12 (2019): 1158–88. http://dx.doi.org/10.2174/1389203720666190320170215.

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Анотація:
The field of enzyme inhibition is a tremendous and quickly growing territory of research. Urease a nickel containing metalloenzyme found in bacteria, algae, fungi, and plants brings hydrolysis of urea and plays important role in environmental nitrogen cycle. Apart from this it was found to be responsible for many pathological conditions due to its presence in many microorganisms such as H. Pylori, a ureolytic bacteria having urease which elevates pH of gastric medium by hydrolyzing urea present in alimentary canal and help the bacteria to colonize and spread infection. Due to the infections ca
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5

Rana, Muhammad Ajmal, Rashid Mahmood, and Sajid Ali. "Soil urease inhibition by various plant extracts." PLOS ONE 16, no. 10 (2021): e0258568. http://dx.doi.org/10.1371/journal.pone.0258568.

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Анотація:
Urea is the most popular and widely used nitrogenous fertilizer. High soil urease activity rapidly hydrolyses applied urea to ammonia which contributes to soil nitrogen (N) losses and reduces N use efficiency of crop plants. The ammonia losses can be minimized by the inhibition of soil urease activity which has been explored using various potential chemical inhibitors. However, the soil urease activity inhibition potential of plant extracts is rarely explored to date. In the present study, extracts of 35 plant materials were taken and evaluated against jack bean urease. Eleven extracts, showin
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6

Wang, Xiao Feng, Huai Dong Bao, and Jie Min Cheng. "The Effect of nanoFe3O4 Particles on the Soil Urease and Catalase Activity." Advanced Materials Research 864-867 (December 2013): 853–56. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.853.

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Effects of nanoFe3O4 particles with different content on the soil urease and catalase activities in pakchoi planting soil were analyzed by pot culture. The results showed that after nanoFe3O4 was added the soil urease and catalase activities were significantly inhibited. In the groups treated with 1%, 2% and 3% nanoFe3O4, the soil urease activity was significantly decreased by 13.9%25.2%33.6% , and the soil catalase activity was significantly decreased by 9.59%10.26%33.04% compared with the control group. It followed that nanoFe3O4 played an inhibiting role in the soil urease and catalase acti
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7

Zhang, Xiaoyin, Yue He, Zhanbo Xiong, et al. "Chelerythrine Chloride: A Potential Rumen Microbial Urease Inhibitor Screened by Targeting UreG." International Journal of Molecular Sciences 22, no. 15 (2021): 8212. http://dx.doi.org/10.3390/ijms22158212.

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Анотація:
Inhibition of ruminal microbial urease is of particular interest due to its crucial role in regulating urea-N utilization efficiency and nitrogen pollution in the livestock industry. Acetohydroxamic acid (AHA) is currently the only commercially available urease inhibitor, but it has adverse side effects. The urease accessory protein UreG, which facilitates the functional incorporation of the urease nickel metallocentre, has been proposed in developing urease inhibitor through disrupting urease maturation. The objective of this study was to screen natural compounds as potential urease inhibitor
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8

Rauf, Abdur, Muhammad Ibrahim, Naveed Muhammad, et al. "Enzyme Inhibitory Activities of Extracts and Carpachromene from the Stem of Ficus benghalensis." BioMed Research International 2022 (December 20, 2022): 1–6. http://dx.doi.org/10.1155/2022/7053655.

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Анотація:
Ficus benghalensis is one of the potential medicinal plants which is used locally for the treatment of various ailments such as diabetes, antiasthmatic, and wound healing. To provide a scientific background to these folklores, the current study was designed to evaluate the extract and isolated compound against various enzymes such as ureases, tyrosinase, and phosphodiesterase. The methanolic extract and carpachromene demonstrated a significant urease inhibition effect with maximum percent inhibition of 72.09 and 92.87%, respectively. Regarding the tyrosinase inhibition, the percent antagonist
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9

Kumar, Sandeep. "Urease: Occurrence, inhibition and immobilization." South Asian Journal of Food Technology and Environment 02, no. 3and4 (2016): 418–31. http://dx.doi.org/10.46370/sajfte.2016.v02i03and04.01.

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10

Aniceto, Natália, Tânia S. Albuquerque, Vasco D. B. Bonifácio, Rita C. Guedes, and Nuno Martinho. "Using Machine Learning and Molecular Docking to Leverage Urease Inhibition Data for Virtual Screening." International Journal of Molecular Sciences 24, no. 9 (2023): 8180. http://dx.doi.org/10.3390/ijms24098180.

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Анотація:
Urease is a metalloenzyme that catalyzes the hydrolysis of urea, and its modulation has an important role in both the agricultural and medical industry. Even though numerous molecules have been tested against ureases of different species, their clinical translation has been limited due to chemical and metabolic stability as well as side effects. Therefore, screening new compounds against urease would be of interest in part due to rising concerns regarding antibiotic resistance. In this work, we collected and curated a diverse set of 2640 publicly available small-molecule inhibitors of jack bea
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Дисертації з теми "Urease inhibition"

1

Frame, William Hunter. "Ammonia Volatilization, Urea Hydrolysis, and Urease Inhibition with the Application of Granular Urea in Agroecosystems." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/37598.

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Анотація:
Synthetic nitrogen (N) fertilizers play a key role in human nutrition and crop production. The most widely used N source globally is urea; however, N loss via ammonia volatilization can be great in agricultural systems where urea is surface-applied. The objectives of the experiments reported in this dissertation were: 1) evaluate the performance of a new laboratory ammonia volatilization measurement system for measuring ammonia volatilization from coated granular urea; 2) determine if urease can be extracted from corn and soybean residues; 3) determine if differences in urease activity are p
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2

Mazzei, Luca <1986&gt. "Biochemical and Structural Studies on Urease Inhibition. A Nickel-Dependent Virulence Factor." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amsdottorato.unibo.it/8032/1/Mazzei_Luca_tesi.pdf.

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Анотація:
Urease is a nickel-dependent enzyme that catalyses the rapid hydrolysis of urea, determining an overall increase of pH and causing negative consequences for human health as well as agriculture. For these reasons, the scientific community has devoted intense efforts in the last several decades for the development of efficient and specific inhibitors of urease able to counteract its negative effects. In this study, a combination of kinetic experiments, carried out using calorimetry and spectrophotometry, and X-ray protein crystallography has been applied to the urease system to determine the in
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3

Hassounah, Hany [Verfasser], M. [Akademischer Betreuer] Pietzsch, K. [Akademischer Betreuer] Humbeck, and C. [Akademischer Betreuer] Syldatk. "Investigations on the phylogenetic diversity of urease producing bacteria in soil, the inhibition of urea active transportation and metabolizing in Bacillus megaterium DSM 90 / Hany Hassounah. Betreuer: M. Pietzsch ; K. Humbeck ; C. Syldatk." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2010. http://d-nb.info/102493750X/34.

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4

Dawar, Khadim M. "The impacts of urease inhibitor and method of application on the bioavailability of urea fertiliser in ryegrass (Lolium perenne L.)." Thesis, University of Canterbury. School of Biological Sciences, 2010. http://hdl.handle.net/10092/5193.

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Анотація:
The use of urea fertiliser has been associated with relatively poor nitrogen (N) use efficiency (NUE) due to heavy N losses such as gaseous emissions of ammonia (NH₃) and nitrous oxide (N₂O) and nitrate (NO₃⁻) leaching into surface and ground waters. Improving N use-efficiency of applied urea is therefore critical to maximise its uptake and to minimise its footprint on the environment. The study was conducted under laboratory-glasshouse conditions (Chapter 2-4)and lysimiter-field plot studies (Chapter 5). In chapter 2, Two glasshouse-based experimentswere conducted to investigate the potential
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5

Dias, Marylene. "Cytokinines de la famille des n-phenyl-n-pyridylurees : synthèse d'analogues et étude photolytique d'un dérivé azido." Angers, 1994. http://www.theses.fr/1994ANGE0005.

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Анотація:
Dans l'espoir de mettre en évidence une activité anticytokinine dans les dérivés des n-phenyl-n-pyridylurees, 10 molécules, 9 urées et un carbamate, analogues structuraux de la n-benzyl-n-(2,6-dichloropyrid-4-yl) urée ont été synthétisés. Ces composés ont été obtenus par réaction de pyridylisocyanates ou de pyridylcarbamates avec des dérivés amines ou l'alcool benzylique. Nous avons par ailleurs mis en évidence l'impossibilité d'obtenir des urées par réaction des 4-amino-pyridines 2-substituées et de l'isocyanate de benzyle à cause de réactions secondaires. Les tests biologiques ont montré que
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6

Faria, Letícia de Abreu. "Dinâmica do nitrogênio proveniente de ureia combinada a tecnologias redutoras de volatilização." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-02042013-132618/.

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Анотація:
A aplicação de ureia em manejos conservacionistas favorece a ocorrência de elevadas perdas por volatilização de NH3. Novas fontes nitrogenadas ou processos que possam ser aplicados à ureia têm sido pesquisados a fim de reduzir esse tipo de perda. Considerando as questões: O uso móvel do coletor semi-aberto exige a alteração das equações de ajuste, que foram desenvolvidas a partir de seu uso na forma estática? Há menor perda de N por volatilização, e influência o estado nutricional, qualidade e a produtividade da cultura com a agregação de tecnologias à ureia, como o revestimento com zeolita ou
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7

Marcondes, Angela Lemos Prestes. "Volatilização de amônia de adubos nitrogenados sob diversas condições ambientais na cultura do milho." Universidade Estadual do Oeste do Paraná, 2007. http://tede.unioeste.br:8080/tede/handle/tede/1276.

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Анотація:
Made available in DSpace on 2017-07-10T17:37:05Z (GMT). No. of bitstreams: 1 Angela Lemos Prestes Marcondes.pdf: 484682 bytes, checksum: 74c71be734cb296a788fd1e8a2cf9d0d (MD5) Previous issue date: 2007-02-02<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Experiments in laboratory and house of vegetation with two ground, one of arenaceous texture (PVAd) and another argillaceous one had been developed (NVdf), beyond a study the field, having for objective to evaluate the agronomic effectiveness of the nitrogen fertilization, evaluating losses of N for volatilization of d
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8

Reinhardt-Hanisch, Annett. "Grundlagenuntersuchungen zur Wirkung neuartiger Ureaseinhibitoren in der Nutztierhaltung." Stuttgart : Selbstverl, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-3028.

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9

Sunderlage, Brent. "LATE APPLICATION NITROGEN ON CORN IN SOUTHERN ILLINOIS AND SOIL PROPERTIES AFFECTING AMMONIA VOLATILIZATION FROM UREA FERTILIZER." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2154.

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Анотація:
AN ABSTRACT OF THE THESIS OF BRENT C. SUNDERLAGE, for the Master of Science degree in Plant, Soil, and Agricultural Systems, presented on March 8, 2017, at Southern Illinois University Carbondale. TITLE: LATE APPLICATION NITROGEN ON CORN IN SOUTHERN ILLINOIS AND SOIL PROPERTIES AFFECTING AMMONIA VOLATILIZATION FROM UREA FERTILIZER MAJOR PROFESSOR: Dr. Rachel L. Cook In corn (Zea mays L.) production systems, typical nitrogen fertilization occurs either before planting or after crop emergence, as late as the V6 stage. Since the majority of nitrogen uptake does not occur until V10 through R1,
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10

Wallace, Ashley J. "The effect of environment, soil type and farm system management on nitrogen use efficiency and nitrous oxide emissions from cereal crops in south eastern Australia." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232432/1/Ashley_Wallace_Thesis.pdf.

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Анотація:
This thesis outlines findings from a series of field experiments measuring the efficiency with which wheat and barley crops grown in south eastern Australia utilise nitrogen (N) fertiliser, with particular focus on loss of N as emissions of the greenhouse gas: nitrous oxide. N use efficiency varied significantly across regions, seasons and management strategies, while nitrous oxide emissions were highest in high rainfall environments or under irrigation compared with lower rainfall environments. Strategies which match the rate and timing of fertiliser application to crop demand resulted in gre
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Книги з теми "Urease inhibition"

1

Kiss, S., and M. Simihăian. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1.

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M, Simihǎian, ed. Improving efficiency of urea fertilizers by inhibition of soil urease activity. Kluwer Academic Publishers, 2002.

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3

Kiss, S., and M. Simihaian. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer, 2002.

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4

Kiss, S. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer, 2010.

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5

Kiss, S., and M. Simihaian. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer, 2013.

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6

Kiss, S., and M. Simihaian. Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer London, Limited, 2013.

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7

Watson, Catherine J. Urease Activity and Inhibition - Principles and Practice (Proceedings of the International Fertiliser Society S.). International Fertiliser Society, 2000.

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8

Marion, Carol I. Effects of nitrogen source, rate and a nitrification inhibitor on soil nitrogen status and mineral composition of strawberry. 1992.

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Частини книг з теми "Urease inhibition"

1

Kiss, S., and M. Simihăian. "Urease Inhibitors Used with Another Purpose than Inhibition of Soil Urease Activity." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_11.

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2

Kiss, S., and M. Simihăian. "Combined Use of Inhibitors of Soil Urease Activity." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_4.

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Kiss, S., and M. Simihăian. "Comparative Studies on the Efficiency of Different Inhibitors of Soil Urease Activity." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_5.

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Kiss, S., and M. Simihăian. "Soil Urease Inhibitors Used in Combination with Nitrification and/or Algal Inhibitors." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_7.

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Kiss, S., and M. Simihăian. "Effect of Soil Urease Inhibitors on Germination, Growth, and Yield of Plants." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_8.

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Kiss, S., and M. Simihăian. "Introduction." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_1.

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Kiss, S., and M. Simihăian. "Use of Urease Inhibitors in the Analysis of Urea and/or Ammonium from Urea-treated Soils." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_10.

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Kiss, S., and M. Simihăian. "Conclusions." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_12.

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Kiss, S., and M. Simihăian. "Inorganic Compounds Tested for Evaluation of Their Inhibiting Effect on Soil Urease Activity, Urea Hydrolysis, Ammonia Volatilization, and Nitrous Oxide Emission." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_2.

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Kiss, S., and M. Simihăian. "Organic Compounds Tested for Evaluation of Their Inhibiting Effect on Soil Urease Activity, Urea Hydrolysis, Ammonia Volatilization, and Nitrous Oxide Emission." In Improving Efficiency of Urea Fertilizers by Inhibition of Soil Urease Activity. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1843-1_3.

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Тези доповідей конференцій з теми "Urease inhibition"

1

Kumar, Ashok, and L. D. Stephenson. "Self-Healing Coatings." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02158.

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Abstract The efficacy of a “self-healing” corrosion protection coating system for use on steel enclosures for outdoor equipment has been investigated. Urea formaldehyde microcapsules (60-150 microns in diameter) that contained several types of film forming compounds (healants) and corrosion inhibitors were mixed into commercially available coatings systems. Laboratory tests showed that when the coating system was damaged by abrasion, the microcapsules broke open and released their film forming and corrosion inhibiting compounds, thus initiating the self-healing process, in which the damaged ar
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Hollander, O., and G. E. Geiger. "Development of a Corrosion Inhibitor for Low Carbon Steel in Concentrated Solutions of Urea-Ammonium Nitrate Fertilizers." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88347.

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Abstract Low carbon steel (LCS) exposed to concentrated solutions of urea-ammonium nitrate (UAN) can develop either a fully or a partially passive film. The integrity of the film phase that develops depends primarily on pH and, to a lesser extent, on nitrate ion concentration. Urea interacts synergistically with nitrate in the presence of low-carbon steel; surface adsorption may be the mechanism leading to higher true current densities. Based on this information, an inhibitor was developed that protects the naturally formed passive film from pH depressions.
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Deviney, Alison V., J. Mark Rice, and John J. Classen. "<i>Urease Inhibition in Solutions and Urine</i>." In 2017 Spokane, Washington July 16 - July 19, 2017. American Society of Agricultural and Biological Engineers, 2017. http://dx.doi.org/10.13031/aim.201701273.

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Vicar, Nicoleta, Adina Berbecea, Alina Lato, Liliana Brei, and Isidora Raduloiv. "INFLUENCE OF COATED UREA APPLICATION ON SOIL ORGANIC CARBON SEQUESTRATION." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023v/4.2/s19.31.

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The application of nitrogen fertilizers in the form of urea tends to increase acidity, especially on low pH soils, and as a result can lead to increased aluminum toxicity, which can adversely affect not only soil properties such as microbial activity, but also productivity. Application of different types of urea with inhibitors to reduce nitrogen losses would result in a different carbon response to fertilizers applications for the same soil type because of differences in soil micro-environment, including microbial biomass and activity. The aim of the study was to determine the influence of ap
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Lato, Alina, Isidora Radulov, Adina Berbecea, Alina Neacsu, and Iaroslav Lato. "UREA FERTILIZERS EFFICIENCY UPON QUALITY PARAMETERS OF WINTER CROPS." In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/6.2/s25.45.

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Nowadays, wheat is the most important food source worldwide and rapeseed has become one of the alternative sources of energy, that is, biofuel. In the current global economic context, the practice of intensive farming, by applying large amounts of fertilizers is no longer sustained, mostly because of the negative environmental impact and also because of the high prices of fertilizers. It is imperatively necessary to practice an efficient management of nitrogen fertilizer, in order to avoid both environmental and economic negative consequences in the future years. The cereals, as wheat and oil
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Hefley, Chalone, Marty Rhoades, Brock Blaser, and David Parker. "Nutrient Content of Wheat and Corn in Response to the Application of Urea and the Urease Inhibitor NPBT." In 2017 Spokane, Washington July 16 - July 19, 2017. American Society of Agricultural and Biological Engineers, 2017. http://dx.doi.org/10.13031/aim.201701426.

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Herenda, Safija, and Edhem Hasković. "Determination of the inhibitor effect of thiourea on urease activity." In RAD Conference. RAD Centre, 2023. http://dx.doi.org/10.21175/rad.abstr.book.2023.2.4.

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Motamedi, Saeed, Robert Nelson, Val Edwards-Jones, and Shaun Greer. "P096 The potent urease inhibitor flurofamide effectively suppresses ammonia production by the colonic microflora." In Abstracts of the British Association for the Study of the Liver Annual Meeting, 22–24 November 2021. BMJ Publishing Group Ltd and British Society of Gastroenterology, 2021. http://dx.doi.org/10.1136/gutjnl-2021-basl.104.

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Chmielewska, J., and B. Wiman. "ON THE KINETICS OF THE INHIBITION OF PLASMINOGEN ACTIVATORS BY THE PLASMINOGEN ACTIVATOR INHIBITOR PAI-1." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1642808.

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The kinetics of the inhibition of the following plasminogen activators: one- and two-chain tissue plasminogen activator (t-PA) and low and high molecular weight urokinase (UK) by PAI-1 was studied. For this purpose direct systems were employed and the reactions were studied in the presence of different concentrations of plasminogen activator chromogenic substrates. The second-order rate constant of the association reaction was estimated from the initial decline in plasminogen activator activity. Determination of the rate constants in the absence of substrates was performed by plotting the rate
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David B. Parker, Syam Pandrangi, L. Wayne Greene, et al. "Application Rate and Timing Effects on Urease Inhibitor Performance for Minimizing Ammonia Emissions From Beef Cattle Feedyards." In 2004, Ottawa, Canada August 1 - 4, 2004. American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.16787.

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