Results 51 to 60 of about 304,857 (302)

Mechanisms of influence of forest ecosystems on the aggregate composition and water stability of soil aggregates in the semi-arid area of southeast Ukraine

Regulatory Mechanisms in Biosystems
Modern processes of climate change are accompanied by a number of negative factors, which include aridization, desertification, soil degradation and erosion.
V. A. Gorban, J. L. Poleva, N. A. Bilova, S. O. Hunko, O. V. Kotovych   +4 more
doaj   +1 more source

Fractal Dimension of Coastal Soil Aggregates and Its Relationship with Physical and Chemical Soil Properties

Guan'gai paishui xuebao, 2021
【Objective and objective】 Soil aggregate is a function unit commonly used to describe the impact of soil structure on soil fertility and quality. It is temporally dynamic, modulated by a myriad of biotic and abiotic factors such as wetting-drying cycles ...
HAN Xiao, SHE Dongli, WANG Hongde, ZHENG Yipeng   +3 more
doaj   +1 more source

Mitigation of GHGs Emission From Soils by a Catalyzed In-Situ Photo-Oxidative Polymerization of Soil Organic Matter [PDF]

, 2010
Agricultural lands under food and bio-energy crops, managed grass and permanent crops including agro-forestry, occupy about 40-50% of the Earth's land surface^1^. In 2005, agriculture accounted for an estimated emission of 5.1 to 6.1 GtCO2-eq/yr (10-
Alessandro Piccolo, Riccardo Spaccini
core   +1 more source

Structural and dynamical characteristics of mesoscopic H$^+$[H$_2$O]$_n$ clusters [PDF]

, 2007
Structural and dynamical characteristics pertaining to the solvation of an excess proton in liquid-like nanoclusters of the type [H$_2$O]$_n$ are investigated using Molecular Dynamics experiments. Three different aggregate sizes were analyzed: $n=10,$ 21
Burnham, Castleman, Castleman, Castleman, Chandler, Dang, Daniel Laria, Day, Day, Eigen, Iyengar, Iyengar, Javier Rodriguez, Kebarle, Kornyshev, Laria, Lobaugh, Mariano Galvagno, Petersen, Petersen, Petersen, Sagnella, Schmitt, Schmitt, Spohr, Tepper, Vuilleumier, Vuilleumier, Walbran, Warshel, Yang, Zundel   +31 more
core   +2 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Soil aggregation, water-holding capacity, and biological activity under no-till systems and cropping sequences in the Lao PDR [PDF]

, 2010
In the four southern districts (Kenthao, Paklay, Boten, and Thongmixay) of Xayabury province, the current cropping systems are based on cash crop production.
Boyer, Johnny, Chabanne, André, Chounlamountry, Thisadee, Inthavong, Chansamone, Keodouangsy, Laty, Khamxaykhay, Chanthasone, Panyasiri, Khamkèo, Senephansiri, Sompasith, Séguy, Lucien, Tivet, Florent, Tran Quoc Hoa,   +10 more
core  

Coarse-grained simulation of amphiphilic self-assembly [PDF]

, 2007
We present a computer simulation study of amphiphilic self assembly performed using a computationally efficient single-site model based on Gay-Berne and Lennard-Jones particles. Molecular dynamics simulations of these systems show that free self-assembly
Allen M. P., David J. Michel, Douglas J. Cleaver, Frenkel D., Israelachvili J., Laughlin R. G.   +5 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Stoichiometric characteristics drive the soil aggregate stability after 5 years of vegetation restoration in China

Frontiers in Ecology and Evolution, 2023
Soil stoichiometric characteristics and aggregate stability are affected by vegetation restoration in degraded land. Yet, it is not known that how the aggregate stability is related to soil stoichiometric characteristics under different vegetation ...
Haiming Kan, Hengkang Xu, Guofang Zhang, Chao Chen, Zhuo Pang, Xifeng Fan, Juying Wu   +6 more
doaj   +1 more source