Results 41 to 50 of about 35,562 (308)

USING NATURAL ALTERNATIVE FERTILIZERS FOR POTATO PRODUCTION UNDER SANDY SOIL CONDITIONS IN EGYPT [PDF]

Journal of Plant Production, 2014
Two field experiments were carried out during the two successive seasons of 2010/2011 and 2011/2012 in the Farm of Agric. Res. Station, Wady El-Natrown Area, Fac. Agric. Cairo University, Egypt under saline water and sandy soil conditions.
M. El-Said, M. El-Helaly, S. Shehata
doaj   +1 more source

Role of Soluble Starch in the Flotation Separation of Feldspar and Quartz

Kuangchan zonghe liyong, 2022
The role of soluble starch in the flotation separation of feldspar from quartz was revealed through the single mineral flotation test, potentiodynamic test and absorption measurement.
Yaxiong Xiao, Qing Shi, Qiming Feng
doaj   +1 more source

Bleachability of pIRIR signal from single-grain K-feldspar

, 2022
The high-temperature (e.g., >200 °C) post-infrared infrared (pIRIR) stimulated luminescence of feldspar has been widely used for dating, because it usually suffers negligibly from anomalous fading.
Hui Zhao (7395), Dongju Zhang (1503739), Shengli Yang (138286), Ting Cheng (1692172), Bo Li (112195)   +4 more
core  

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Impact of Enterobacter cloacae and Different Potassium Sources on Growth, Productivity and Tuberous Roots Quality of Cassava under Reclaimed Sandy Soils Conditions [PDF]

Journal of Plant Production
Chemical potassium fertilizers used to increase plant yield; nevertheless, overuse of these fertilizers is costly and pollutes the environment. So, many farmers have turned to cheaper alternative sources of potassium, such as foliar spraying potassium ...
Shereen El-Korde, M. A. M. Ali, Reham El-Saied   +2 more
doaj   +1 more source

The role of heterotrophic bacteria in feldspar dissolution - an experimental approach

, 2003
\This paper presents the results of a laboratory study on the influence of heterotrophic bacteria on dissolution of a silicate mineral (K-feldspar) under a variety of growth conditions.
McLean, J., Gaze, W., Hutchens, E., Valsami-Jones, E., McEldowney, S.   +4 more
core   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Review for High-purity Quartz (SiO2) (PartⅠ): Activation and Separation of Trace, Fine-grain Alumino Silicate Gangue

Kuangchan zonghe liyong, 2022
High-purity quartz, famous for low impurities and high purity, has been widely used in optical fiber communication, photovoltaic, aerospace, semiconductor displayand other high-tech industries.
Min Lin, Shunqiu Xu, Ziyuan Liu, Yan Wei, Bin Liu, Yu Meng, Hang Qiu, Qian Jia, Shaomin Lei   +8 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source