Results 131 to 140 of about 1,939 (269)

Small Pillar Driving Technique in Fully Mechanized Working Face of Outburst Coal Seam

Meikuang Anquan, 2020
Aiming at the safety problems caused by poor roadway stability and other factors during gob-side entry driving of 15106 isolated island face in Sijiazhuang Mine, theoretical calculations, numerical simulations and field tests were adopted to determine the coal pillar size and field practice effect of gob-side entry driving in isolated face. The results
openaire   +1 more source

Analytical solution of predicting rib spalling depth of fully-mechanized coal working face based on tri-linear strain softening model [PDF]

In order to predict rib spalling depth in fully-mechanized mining faces, taking the coal wall as the research object, the coal wall is regarded as a tri-linear strain softening material. Then the direct roof and main roof are taken as macro roof, and the
Guoming CHI, Gang LI, Gang XU, Chunhui ZHANG   +3 more
core   +1 more source

Fair Markets and Resilient Supply Chains: Designing Sustainable Intermediation for Rural Communities

Sustainable Development, EarlyView.
ABSTRACT Agriculture in Ecuador's communes faces significant economic, social, and environmental challenges, intensified by supply chains dominated by traditional intermediaries. The lack of context‐specific sustainability studies further increases the vulnerability of smallholders.
Jacqueline del Rocío Bacilio Bejeguen, Verónica Ramírez Cortés, Larissa Paola Gabriel Macedo Castro, Raquel Santiago Romo   +3 more
wiley   +1 more source

Bridging Efficiency Gaps in Rice Production: A Primal System Analysis of Technical and Allocative Constraints in Bangladesh

Sustainable Development, EarlyView.
ABSTRACT Declining natural resources, rising production costs, and diminishing returns from input‐intensive practices threaten the sustainability of smallholder rice systems in Bangladesh. Using a primal system approach and survey data from 1869 rice‐producing households, this study evaluates technical and allocative inefficiency across major agro ...
Limon Deb, Di Zeng, Rida Akzar, Md. Abdus Salam   +3 more
wiley   +1 more source

Research on dust control technology and numerical simulation of conical guiding air curtain in fully mechanized excavation face

Scientific Reports
The dust pollution caused by the operation of fully mechanized heading face poses a serious threat to the safety production of operators and working face. To reduce dust concentration at the fully mechanized heading face, this study analyzed dust samples
Xin Meng, Qiqiang Gao, Jie Li, Guoan Zhao   +3 more
doaj   +1 more source

Five Lessons From a Decade of Sustainable Development Goals Policy Traction

Sustainable Development, EarlyView.
ABSTRACT As the 2030 Sustainable Development Agenda deadline looms, the gap between political commitments and operational outcomes is widening. While previous studies offer fragmented diagnoses, holistic lessons derived from a decade of the Sustainable Development Goals (SDGs) implementation remain lacking. To address this gap, we examine 60 countries'
Volkan Göçoğlu, Elifnur Düzsöz, Prajal Pradhan   +2 more
wiley   +1 more source

Research on the Mechanism and Control of Spalling on 8 m Fully Mechanized Mining Face in Huoxi Coalfield

Applied Sciences
The great success of fully mechanized mining with a large mining height of 8 m and above in Mongolia and Shaanxi proves the feasibility of this technology. Although fully mechanized mining with a large mining height significantly increases the production
Lin Meng, Mei Wang, Chenlong Wang, Yongkang Yang   +3 more
doaj   +1 more source

A method for completing coal wall point cloud in fully mechanized working face based on residual optimization

The digital 3D reconstruction process of coal mine fully mechanized working face roadways requires complete and dense coal wall point cloud data. Due to factors such as occlusion and limited viewing angle, the collected coal wall point cloud data of the ...
WANG Weibing, HOU Xueqian, LU Zhengxiong, XING Zhizhong, ZHAO Shuanfeng, HE Haitao   +5 more
core   +1 more source

Portable, Benchtop and Micro‐XRF in Agriculture—Present and Future From the Hardware Perspective

X-Ray Spectrometry, EarlyView.
ABSTRACT X‐ray fluorescence (XRF) spectrometry has been an important tool in agricultural studies recently. This technique allows the multielemental, direct, and in situ analysis. The objective of this review is to evaluate the use of XRF in agriculture focusing on plant and soil samples based on indexed articles in the Scopus database from 2020 to ...
Eduardo de Almeida, Felipe Rodrigues Santos, Fabio Luiz Melquiades, Gabriel Sgarbiero Montanha, Tiago Rodrigues Tavares, Eduardo Santos, Higor José Freitas Alves da Silva, Hudson Wallace Pereira de Carvalho   +7 more
wiley   +1 more source

Multi‐Vine Disease Prediction in a Field Test Spanning Whole Growth Season at Wine‐Industrial Site (McLaren Vale)

Artificial Intelligence for Engineering, EarlyView.
Overall, the findings provide reliable evidence for block‐level disease early warning, inspection prioritisation, and spray decision‐making, helping to reduce unnecessary inputs, lower environmental burdens, and improve the resilience and sustainability of vineyard production systems.
Shu Liang, Nguyen Van Duc Long, Mst Irin Parvin, Philip Kwong, Vinay Pagay, Maria Maglieri, Steve Maglieri, Andrew Godfrey, Harpinder Sandhu, Kartheek Munigoti, Nicola Sasanelli, Pieter van Schalkwyk, Freya Richardson, Bhola Paudel, Pramod Gautam, Kashif Khaqan, Volker Hessel   +16 more
wiley   +1 more source