Results 31 to 40 of about 7,858,761 (297)

Enzyme activity and flexibility at very low hydration [PDF]

, 2005
Recent measurements have demonstrated enzyme activity at hydrations as low as 3%. This raises the question of whether hydration-induced enzyme flexibility is important for activity. Here, to address this, picosecond dynamic neutron scattering experiments
Kurkal, V., Kurkal, Vandana, Smith, Jeremy C., Tehei, M., Finney, John L., Dunn, Rachel V., Tehei, Moeava, Dunn, R.V., Daniel, R.M., Daniel, Roy M.   +9 more
core   +1 more source

MEASURMENT OF EFFECT LEVELS ON UREASE ENZYME ACTIVITY IN SOILS UNDER DIFFERENT INCUBATION TIMES [PDF]

Mesopotamia Journal of Agriculture, 2018
A  factorial  experiment  was  conducted  in laboratory using complete randomize  design (CRD) to study the effect of urea fertilizer levels on urease enzyme activity and available nitrogen  in Bashika  and  Al-hawi soils under different incubation times.
Alyaa Abdulateef Jassim AL- Atrkgee, Mazin Faisal Said   +1 more
doaj   +1 more source

Soil Health Check-Up of Conservation Agriculture Farming Systems in Brazil

Agronomy, 2021
Conservation agriculture has been promoted as the main strategy to regenerate soil life but its effect on soil enzyme activity remains little documented. This study investigated the β-glucosidase and arylsulfatase enzymes as tools to evaluate soil health
Jardel H. Passinato, Telmo J. C. Amado, Amir Kassam, José A. A. Acosta, Lúcio de P. Amaral   +4 more
doaj   +1 more source

The molecular basis of the effect of temperature on enzyme activity [PDF]

, 2010
Experimental data show that the effect of temperature on enzymes cannot be adequately explained in terms of a two-state model based on increases in activity and denaturation.
Oudshoorn, Matthew Leslie, Kelly, S.M., Price, N.C., Weinberg, C.S., Monk, C.R., Oudshoorn, M.L., Monk, Colin R., Danson, Michael J., Price, Nicholas C., Danson, M.J., Lee, Charles Kai-Wu, Peterson, Michelle E., Lee, C.K., Peterson, M.E., Weinberg, Cristina S., Daniel, R.M., Daniel, Roy M., Kelly, Sharon M.   +17 more
core   +1 more source

Soil Microbial Biomass Across a Gradient of Preserved Native Cerrado

Floresta e Ambiente, 2018
The different physiognomies and soil conditions across the Cerrado gradient may influence soil microbial biomass. The present study evaluated the soil microbial biomass and enzyme activity across a preserved Cerrado gradient and correlated these with ...
Nilza Silva Carvalho, Sandra Mara Barbosa Rocha, Vilma Maria dos Santos, Fabio Fernando de Araujo, Ademir Sérgio de Araújo   +4 more
doaj   +1 more source

Effects of Simulated Acid Rain on Soil Enzyme Activity and Related Chemical Indexes in Woodlands

, 2022
In order to explore the effects of different concentrations of acid rain on soil nutrient content and nutrient utilization efficiency, and to provide a basis for an improvement in acidified soil in acid rain regions, a year-long acid rain experiment was ...
Yunqi Wang, Yifan Li, Yifan Zheng, Yonglin Zheng   +3 more
core   +1 more source

Effects of Riparian Zone Width and Soil Depth: Soil Environmental Factors Drive Changes in Soil Enzyme Activity

Land
Functioning as a critical ecotone between terrestrial and aquatic ecosystems, riparian zones exhibit soil enzyme activities that serve as key biomarkers of their nutrient cycling processes. However, despite considerable focus on riparian soil properties,
Zixuan Yan, Peng Li, Chaohong Feng, Yongxiang Cao, Kunming Lu, Chenxu Zhao, Zhanbin Li   +6 more
doaj   +1 more source

Effects of Different Ratios of Mineral-solubilizing Microbes and Water-retaining Agents on Soil Nutrients and Enzyme Activities

Shuitu baochi tongbao, 2022
[Objective] The effects of mixed additions of a water-retaining agent and bacterial agents on soil characteristics were determined in order to provide a theoretical basis for promoting mine vegetation restoration.
Nie Hui, Li Chong, Zhang Jinchi, Jia Zhaohui, Ma Shilin, Zeng Jingyi, Chen Meiling   +6 more
doaj   +1 more source

Enzymatic activity of different sequence of biocrusts and loess soils in Incheh Borun region. [PDF]

Desert
Soil enzyme activity is an indicator of microbial community and functions that reflects changes in soil biological properties, soil organic matter dynamic and nutrient cycling.
Farhad Khormali, Behnaz Atashpaz, Sara Marinari, Rosita Marabottini   +3 more
doaj   +1 more source

Atmospheric ammonia concentration modulates soil enzyme and microbial activity in an oak forest affecting soil microbial biomass

, 2018
The present work was carried out to assess the effect of atmospheric ammonia (NH3) on soil physicochemical properties, soil enzymatic activities (β-glucosidase -β-GLU-, nitrate reductase –NR-, urease –UR-, protease –PRO-,acid phosphatase –PHO ...
E. Lasheras, Ciganda, V. S., M. López-Aizpún, Santamaria, C., Cardenas, L. M., Lopez-Aizpun, M., C. Arango-Mora, C. Santamaría, Arango-Mora, C., V.S. Ciganda, L.M. Cárdenas, J.M. Santamaría, D. Elustondo, Elustondo, D., Lasheras, E., Santamaria, J. M.   +15 more
core   +1 more source