Results 41 to 50 of about 2,405 (204)

CO2 Fluxes and Soil Responses to Straw and Herbicide in Peanut

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Peanut cultivation plays an important agronomic role in Brazil, especially in rotation with sugarcane, promoting biological nitrogen fixation and improving soil quality. This study aimed to test the hypothesis that the combined use of sugarcane mulch, peanut cultivation, and herbicide application would affect soil CO₂ fluxes, soil chemical ...
Heytor Lemos Martins   +7 more
wiley   +1 more source

Cultural conditions of arylsulfatase activity in Escherichia coli [PDF]

open access: yes, 1986
Arylsulfatase activity and growth were estimated in Escherichia coli, isolated from marine sediment. Maximum activity was observed at pH 6.6 whereas the maximum growth was at pH 5.6.
Chandramohan, D.   +2 more
core  

Non-Coordinative Binding of O2 at the Active Center of a Copper-Dependent Enzyme [PDF]

open access: yes, 2021
Molecular oxygen (O 2 ) is a sustainable oxidation reagent. O 2 is strongly oxidizing but kinetically stable and its final reaction product is water. For these reasons learning how to activate O 2 and how to steer its reactivity along desired reaction ...
Leisinger, Florian   +2 more
core   +1 more source

The physiological and pathological effects of sphingolipid metabolism and signaling in the central nervous system

open access: yesBrain Pathology, Volume 36, Issue 1, January 2026.
Sphingolipids are vital components of cell membranes. Metabolic disruptions of sphingolipids, including ceramide and sphingosine‐1‐phosphate, are linked to neurological disorders. This article summarizes the classification, structure, and metabolic processes of sphingolipids, and the physiological and pathological effects of sphingolipid metabolism and
Tian Li   +7 more
wiley   +1 more source

Silvopastoral Systems Enhance Soil Health and Carbon Stocks in the Brazilian Semiarid Region

open access: yesApplied and Environmental Soil Science, Volume 2026, Issue 1, 2026.
Aiming to expand the database of research on integrated production systems in Brazilian drylands, this study evaluated the soil carbon and nitrogen stocks and the soil chemical, physical, and biological attributes following the conversion of low‐productivity pastures (LPPs) into silvopastoral systems in the semiarid region of Bahia State, Brazil.
Marcos Fernando Gonçalves Lessa   +8 more
wiley   +1 more source

Structure of 3,4-Dihydroxy-2-butanone 4-Phosphate Synthase from Methanococcus jannaschii in Complex with Divalent Metal Ions and the Substrate Ribulose 5-Phosphate: implications for the catalytic mechanism [PDF]

open access: yes, 2003
Skeletal rearrangements of carbohydrates are crucial for many biosynthetic pathways. In riboflavin biosynthesis ribulose 5-phosphate is converted into 3,4-dihydroxy-2-butanone 4-phosphate while its C4 atom is released as formate in a sequence of metal ...
Bacher, Adelbert   +5 more
core  

Can conservation tillage practices improve soil characteristics in cornfields during a short‐term period?

open access: yesAgrosystems, Geosciences &Environment, Volume 8, Issue 4, December 2025.
Abstract The use of conventional tillage practices in crop production systems has led to a significant soil loss in many regions of Iran. Conservation tillage practices can help restore the degraded soils. A 2‐year experiment was conducted in an irrigated corn (Zea mays L.) cropping system during the 2014–2016 growing seasons on a silty clay soil with ...
Abdolhossein Parandi   +3 more
wiley   +1 more source

Enterohepatic circulation of triiodothyronine [PDF]

open access: yes, 1990
The major factor regulating thyroid function is thyroid stimulating hormone (TSH), a glycoprotein released by the thyrotropic cells of the pituitary gland.
Herder, W.W. (Wouter) de
core  

Can we predict regression of anal high‐grade squamous intraepithelial lesions using molecular biomarkers?

open access: yesColorectal Disease, Volume 27, Issue 12, December 2025.
Abstract Aim High‐grade squamous intraepithelial lesions (HSILs) of the anus are at risk of progression to anal squamous cell carcinoma (ASCC). However, most HSILs spontaneously regress, while treatment efficacy is debated and associated with side effects. No clear clinical predictors for anal HSIL regression have been validated to date.
Emeric Boisteau   +6 more
wiley   +1 more source

Normal operating range of the microbial community under potato [PDF]

open access: yes, 2011
Om de invloed van verschillende aardappelrassen op de bodem te meten bepaalde promovenda Özgül Inceoglu de variatie in parameters van de totale microbiële populatie in de bodem onder invloed van een aantal verschillende aardappelrassen.
Inceoğlu, Özgul
core   +6 more sources

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