Results 21 to 30 of about 109,895 (265)

Characterization of Microstructures in Lacustrine Organic-Rich Shale Using Micro-CT Images: Qingshankou Formation in Songliao Basin

Energies, 2022
In order to explore the development characteristics and influencing factors of microscale pores in lacustrine organic-rich muddy shale, this study selected five shale samples with different mineral compositions from the Qingshankou Formation in the ...
Yan Cao, Qi Wu, Zhijun Jin, Rukai Zhu
doaj   +1 more source

Variations in selected soil physical properties with landforms and slope within an inland valley ecosystem in Ashanti region of Ghana

Soil and Water Research, 2011
One peculiar feature of the inland valleys abundant in West Africa is their site-specific hydrology, underlain mainly by the prevailing landforms and topography.
Sunday E. Obalum, John C. Nwite, James Oppong, Charles A. Igwe, Toshiyuki Wakatsuki   +4 more
doaj   +1 more source

Calculating particle density, bulk density, and total porosity of soil based on its texture

Soil Science Annual, 2014
This paper provides the verification of coefficients for the calculation of particle density, bulk density, and total porosity based on the texture of soils proposed by Brogowski (1990).
BROGOWSKI ZYGMUNT, KWASOWSKI WOJCIECH, MADYNIAK RENATA   +2 more
doaj   +1 more source

Effect of Organic Fertilizer and Water-Retaining Agent Application on Soil Structure and Water Availability in Different Soil Layers of a Semi-Arid Region

Agriculture
Increasing total soil porosity and optimizing pore distribution improve soil water-holding capacity, thereby alleviating drought impacts on crop yields in semi-arid regions. A three year split-plot field experiment was conducted, with organic fertilizer (
Min Zhao, Zilian Li, Meihua Ye, Xuefang Huang, Nana Li, Kexing Hao, Gaimei Liang   +6 more
doaj   +1 more source

A NEW METHOD FOR MEASURING TOTAL POROSITY IN HORTICULTURAL SUBSTRATES [PDF]

HortScience, 1990
The determination of air and water holding capacities of horticultural substrates has been plagued by errors in measurement. The amount of air and water held at container capacity is influenced by the substrate and container height. Container capacity can be established through specific measurement.
openaire   +1 more source

Efeitos de sistemas de produção de grãos envolvendo pastagens sob plantio direto nos atributos físicos de solo e na produtividade Effects of grain production systems including pastures under no-tillage on soil physical properties and yield

Revista Brasileira de Ciência do Solo, 2004
A integração da lavoura com a pecuária altera a estrutura do solo, que, por sua vez, interfere nas características físicas na camada superficial. O objetivo deste trabalho foi avaliar os atributos físicos de solo e o rendimento de grãos num Latossolo ...
S. T. Spera, H. P. Santos, R. S. Fontaneli, G. O. Tomm   +3 more
doaj   +1 more source

Comparison of the Effects of Different Crop Production Systems on Soil Physico-Chemical Properties and Microbial Activity under Winter Wheat

Agronomy, 2020
In many areas, organic crop production systems have been shown to contribute to maintaining good soil condition. The organic production system has been recommended as an alternative to conventional agriculture.
Anna Maria Gajda, Ewa Antonina Czyż, Aleksandra Ukalska-Jaruga   +2 more
doaj   +1 more source

Experimental Investigating of Compaction Effect on Porosity Measurement for Carbonate Rocks

Iraqi Geological Journal, 2022
Oil and natural gas may be found in commercial reservoirs, porous and easily permeable rocks. Porosity is an essential characteristic of reservoirs. This research focuses on comparing laboratory-measured porosity to log porosity. A comparison of
Ahmed Watten, Mohammed S. Aljwad
doaj   +1 more source

GelMA‐based 3D spheroids recapitulate transcriptomic and functional hallmarks of myeloid sarcoma

FEBS Open Bio, EarlyView.
GelMA 5% hydrogels support the formation of myeloid leukemia spheroids that recapitulate MS‐specific features, including G1 arrest, apoptosis, and ECM‐driven transcriptomic reprogramming. The 3D model mimicked soft‐tissue‐like stiffness and oxygen conditions, and transcriptomic convergence with primary MS samples confirmed its utility as a preclinical ...
Nicolas Germain, Elise Buret, Le Hoang Thanh Nguyen, Marion Cocheteux, Nicolas Touya, Mélanie Dhayer, Romain Dubois, Frank Lafont, Sebastien Janel, Patrice Maboudou, Steve Lancel, Philippe Marchetti   +11 more
wiley   +1 more source

Integração lavoura e pecuária e os atributos físicos de solo manejado sob sistema plantio direto Livestock-crop integration effects on physical attributes of a soil under no-till

Revista Brasileira de Ciência do Solo, 2009
Atributos físicos de solo foram avaliados num Latossolo Vermelho distrófico típico, em Passo Fundo, RS, dez anos após o estabelecimento (1993 a 2003) de cinco sistemas de produção integrando culturas produtoras de grãos, pastagens de inverno e ...
Silvio Tulio Spera, Henrique Pereira dos Santos, Renato Serena Fontaneli, Gilberto Omar Tomm   +3 more
doaj   +1 more source