Results 81 to 90 of about 253,788 (309)

Fundamentals of Nutrient Management: Why Nutrient Replacement is Essential in Organic and all Agriculture [PDF]

, 2008
There is a belief, going back to the foundation of organic agriculture, that nutrient replacement, i.e., the use of ‘fertilisers’, within organic agriculture is not required.
Merfield, Charles
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Decomposition of coarse woody debris in a long-term litter manipulation experiment: A focus on nutrient availability [PDF]

, 2018
The majority of above-ground carbon in tropical forests is stored in wood, which is returned to the atmosphere during decomposition of coarse woody debris.
Gora, Evan M., Sayer, Emma J., Tanner, Edmund V. J., Turner, Benjamin L.   +3 more
core   +3 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Predictive Machine Learning Model to Assess the Adsorption Efficiency of Biochar-Heavy Metals for Effective Remediation of Soil–Plant Environment

Toxics
Biochar is crucial for agricultural output and plays a significant role in effectively eliminating heavy metals (HMs) from the soil, which is essential for maintaining a soil–plant environment. This work aimed to assess machine learning models to analyze
Xiang Li, Bing Chen, Weisheng Chen, Yilong Yin, Lianxi Huang, Lan Wei, Mahrous Awad, Zhongzhen Liu   +7 more
doaj   +1 more source

Dynamic Ecological System Analysis

, 2018
This article develops a new mathematical method for holistic analysis of nonlinear dynamic compartmental systems through the system decomposition theory.
Coskun, Huseyin
core   +1 more source

Dual PI3K/AKT and CDK4/6 inhibition reveals selective sensitivity in an SHH medulloblastoma stem cell model

Molecular Oncology, EarlyView.
Targeted therapy was evaluated in SHH medulloblastoma using neuroepithelial stem cell (NES) and tumor‐derived NES‐like (tNES) models in 2D monolayers and 3D spheroids. PI3K, AKT, and CDK4/6 inhibitors had minimal effects in NES but markedly reduced viability and growth and induced apoptosis in tNES cells, revealing distinct therapeutic vulnerabilities.
Monika Lukoseviciute, Madeleine Birgersson, Paolo Ceriani, Margareta Wilhelm, Ourania N Kostopoulou   +4 more
wiley   +1 more source

Improvement of germination and growth of tomato seeds under phenolic acid stress by humic acid-medium and trace element compounds

Scientia Horticulturae
Allelopathic stress induced by phenolic acids poses a significant challenge to sustainable agricultural development. To alleviate this stress in tomatoes, this study synthesized humic acid-based compounds with medium and trace elements, including calcium
Lifang Zhuo, Yuting Tu, Yanggui Xu, Yiping Peng, Jianyi Liang, Zhuxian Li, Baozhu Chen, Wenliang Zhong, Jichuan Huang   +8 more
doaj   +1 more source

Nutrient Cycling Study [PDF]

, 2005
The particular goal of this study is to develop measurement techniques for understanding how consortia of organisms from geothermal facilities utilize sulfur and iron for metabolic activity; and in turn, what role that activity plays in initiating or promoting the development of a biofilm on plant substrates.
openaire   +2 more sources

Nutrient Cycling in Aquaponics Systems [PDF]

, 2019
AbstractIn aquaponics, nutrients originate mainly from the fish feed and water inputs in the system. A substantial part of the feed is ingested by the fish and either used for growth and metabolism or excreted as soluble and solid faeces, while the rest of any uneaten feed decays in the tanks.
Eck, Mathilde, Körner, Oliver, Jijakli, Haissam   +2 more
openaire   +2 more sources

Soil biota in grassland, its ecosystem services and the impact of management [PDF]

, 2007
In the search for sustainable grassland systems, self-regulating processes in the soil become increasingly important. Soil biota play an important role in these processes and in the provision of various ecosystem services. For grassland systems important
Murray, P.J., Smeding, F.W., van Eekeren, N.   +2 more
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