Results 41 to 50 of about 2,146,429 (299)

Weekly rainfall analysis for crop planning in rainfed Shivalik Himalayas of India

open access: yesJournal of Agrometeorology, 2015
The study was carried out to compare various two-parameter probability distributions for identifying the most appropriate distribution to describe the weekly rainfall data of Standard Meteorological Week (SMW) from 22 to 42 weeks in Shivalik region of ...
N.M. ALAM   +6 more
doaj   +1 more source

Land-use effects on soil-water retention characteristic [PDF]

open access: yes, 2002
Tillage can negatively affect soil physical properties such as bulk density, organic matter content, and soil hydraulic properties, which in turn affect how plants grow. The objective of this study was to evaluate water retention characteristics of a Jay
Brye, Kristofor, Colton, Naomi
core   +2 more sources

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

Microbial regulation mechanisms of soil organic carbon sequestration by biochar application

open access: yesBiochar
The application of biochar to agricultural soils is a promising strategy for reducing greenhouse gas emissions and enhancing carbon sequestration. However, the microbially mediated mechanisms by which biochar influences soil carbon cycling remain unclear.
Gehao Zhang   +5 more
doaj   +1 more source

Carbon pool trends and dynamics within a subtropical peatland during long-term restoration

open access: yesEcological Processes, 2017
Introduction The Florida Everglades has undergone significant ecological change spanning the continuum of disturbance to restoration. While the restoration effort is not complete and the ecosystem continues to experience short duration perturbations, a ...
Paul Julian   +4 more
doaj   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

Heavy metals in dates (Phoenix dactylifera L.) collected from Medina and Dhaka City markets, and assessment of human health risk

open access: yesEnvironmental Systems Research
Background Constantly eaten foods (such as fruits, vegetables, cereal, etc.) that contain excessive concentrations of heavy metals pose a major risk to human health and deplete the food supply.
Afrose Sultana Chamon   +9 more
doaj   +1 more source

Soil Erosion and Its Spatial Distribution Characteristics in Three-River-Source National Park

open access: yesShuitu baochi tongbao, 2023
[Objective] The Three-River-Source National Park (TRSNP) is considered to be the “water tower of China”, and is an important ecological security barrier in China.
Huang Tingting   +5 more
doaj   +1 more source

Soil Particle Size Distribution Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to sure the distribution of different sizes of soil particles in each horizon of a soil profile. Using dry, sieved soil from a horizon, students mix the soil with water and a dispersing solution to completely separate the ...
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
core  

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