Results 111 to 120 of about 11,011,498 (241)

Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons

Meitan kexue jishu
The research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU, Yang TAI, Gang XU, Yong LI, Dongyin LI, Shibo WANG, Tiejun KUANG, Ercun MENG   +7 more
doaj   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Caving-induced subsidence behaviour of lift 1 at the Palabora Block Cave Mine

, 2016
The Palabora copper mine is a large, 32 000 t/d block cave operation located in the eastern half of Limpopo, South Africa’s northern-most province. Palabora Mining Company is currently developing a second lift (Lift 2) in addition to their existing block
HD Paetzhold (15788093), D Sainsbury (13604116), A Vakili (13604125), Bre-Anne Sainsbury (13062258), P Lourens (13604122)   +4 more
core  

Cuantificación de la migración de finos en minería de block caving mediante experimentos de laboratorio

, 2023
La migración de finos en minería block caving corresponde al movimiento de material granular de bajo tamaño. Este material se dirige hacia los puntos de extracción, causando la dilución del mineral valioso y problemas de seguridad debido a las colgaduras
Aravena Tavali, Michael Alexis
core  

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

Overlying strata failure law and rock mass stability control technology in upward mining of ultra-close-distance coal seams

采矿与岩层控制工程学报
Traditional upward mining of coal seam groups requires the interlayer spacing to be at least 4–5 times the mining height of the lower coal seam. During upward mining in ultra-close-distance coal seams, the roof and floor of the upper coal seam are ...
Jinpeng ZHANG, Zheng CHEN, Xuefeng LIU, Renbao ZHAO, Minghui WANG, Zimin ZHAO, Pengxiang SUN   +6 more
doaj   +1 more source

Comprehensive Review on Advancements in Food Preservation Technologies for Quality and Sustainability

Food Chemistry International, EarlyView.
Preservatives limit microbial development, oxidation, and enzymatic degradation, resulting in better food quality and extended shelf life. Classified as natural, synthetic, or biological, each preservative has distinctive attributes and modes of action. Growing preference for natural preservatives aligns with clean label trends.
Monica Suresh, Arun Meyyazhagan, Haripriya Kuchi Bhotla, Manikantan Pappuswamy, Balamuralikrishnan Balasubramanian   +4 more
wiley   +1 more source

The matrilineal Turn: Wiradjuri matrilineal leadership, colonial disruption, and the work of cultural return

Feminist Anthropology, EarlyView.
Abstract This article advances three claims regarding the matrilineal organization of Wiradjuri society in central New South Wales. Drawing on the late nineteenth and early twentieth century ethnographic record, it demonstrates that Wiradjuri descent, totem, moiety identity, and ceremonial authority were and are matrilineally organized, despite ...
Jessa Rogers
wiley   +1 more source

Practice adoption in MNCS: A multi‐level interactionist model of trait activation

Global Strategy Journal, EarlyView.
Abstract Research Summary Sharing knowledge through organizational practices is an important source of advantage for multinational corporations (MNCs). While prior research on practice adoption by subsidiaries of MNCs has identified several individual and organizational factors, this study examines their interplay in the context of HQ‐mandated ...
Sven Kunisch, Ulrich Leicht‐Deobald, Tomi Laamanen, Adrian Schulte Steinberg, Björn Ambos   +4 more
wiley   +1 more source

Clinicogenomic Features and Outcomes of Adenoid Cystic Carcinoma With Central Nervous System Metastases: A Single‐Institution Cohort Study

Head &Neck, EarlyView.
ABSTRACT Background Adenoid cystic carcinoma (ACC) is a rare malignancy with a propensity for perineural invasion and hematogenous spread. Central nervous system (CNS) involvement is uncommon, and detailed clinical and genomic data on this aspect of the disease remain limited.
Omar Elghawy, Jack Stylli, Martin Kurian, Eitan Halper‐Stromberg, Aditi Singh, Christopher D'Avella, Lee Hartner, Roger B. Cohen   +7 more
wiley   +1 more source