Results 81 to 90 of about 1,889 (217)

Study on Gas Drainage Technology of High-level Borehole in Fully Mechanized Caving Face

IOP Conference Series: Earth and Environmental Science, 2020
Abstract In view of the problem of gas safety in fully mechanized caving face under complex geological conditions, taking high-level borehole gas extraction as the main gas control means to improve the extraction effect and ensure gas safety during mining, this paper takes 131301 fully mechanized caving face of Xinji No.
openaire   +1 more source

Enhancing Environmental Conservation in Recreational Sports Tourism From a Shared‐Responsibility Perspective: A Qualitative Study of Recreational Kayaking in Hong Kong

International Journal of Tourism Research, Volume 28, Issue 2, March/April 2026.
ABSTRACT Despite extensive literature on the demand for recreational sports tourism, more research is needed on stakeholders' shared responsibilities for environmental conservation. To address this gap, this study proposed an extended conceptualization of shared responsibility, examining stakeholders' perceptions, expectations and interactions in ...
Casey Wai Ki Ho, Vincent Wing Sun Tung
wiley   +1 more source

Study on thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata

Gong-kuang zidonghua, 2018
Taking No.12051 fully-mechanized coal face of Zhaogu No.1 Coal Mine as research object, thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata were studied by use of UDEC numerical simulation software ...
ZHAI Xinxian, LYU Chao, TANG Shijie, YU Chunsheng   +3 more
doaj   +1 more source

Agricultural System Resilience of Industrial Hemp: An Exploratory Value Web Analysis in the Swabian Alb

GCB Bioenergy, Volume 18, Issue 2, February 2026.
This study assessed the industrial hemp value web resilience in the Swabian Alb, Southern Germany, where regional implementation remains limited despite hemp's bioeconomy potential. Using an indicator framework and stakeholder interviews, the research found the small, fluctuating cultivation area (e.g., 25 ha in 2024) focuses on hemp seed valorisation;
Lena‐Sophie Loew, Moritz von Cossel
wiley   +1 more source

English for Study and Work: Coursebook in 4 books. Book 2 Obtaining and Processing Information for Specific Purposes [PDF]

, 2015
Подано всі види діяльності студентів з вивчення англійської мови, спрямовані на розвиток мовної поведінки, необхідної для ефективного спілкування в академічному та професійному середовищах.
Зуенок, И. И., Зуенок, Ирина Ивановна, Зуєнок, І. І., Зуєнок, Ірина Іванівна, Кострицкая, С. И., Кострицкая, Светлана Ивановна, Кострицька, С. І., Кострицька, Світлана Іванівна, Поперечна, Н. В., Поперечна, Неллі Василівна, Поперечная, Н. В., Поперечная, Нелли Васильевна, Швец, Е. Д., Швец, Елена Дмитриевна, Швець, О. Д., Швець, Олена Дмитрівна   +15 more
core  

A Polanyian Framework for Analyzing a Diverse Black‐Market Economy in Cuba

Journal of Agrarian Change, Volume 26, Issue 1, January 2026.
ABSTRACT Inspired by Carmen Diana Deere's work, we examine how planned economies, markets and communal economies interrelate to co‐produce Cuba's agricultural economy. We show the variety of noncapitalist practices interrelated with and embedded in the black market and how these interactions produce diverse ethics.
Federica Bono, John C. Finn
wiley   +1 more source

Mechanical Analysis of the First Fracture Characteristics of Hard Roof of Extra-thick Coal Seam

Meikuang Anquan, 2020
In order to investigate the failure mechanisms of the hard roof in the fully mechanized caving face in the extra-thick coal seam, the mechanical analysis model of the first breaking of the hard top roof in the fully mechanized caving mining of the extra-
LIANG Shaping, LU Yinlong, GUO Peng, WU Bingzhen
doaj   +1 more source

Экологические аспекты прогрессивных технологий отработки мощных угольных пластов с выпуском подкровельной толщи [PDF]

, 2017
В статье рассматриваются экологические аспекты прогрессивных технологий отработки мощных угольных пластов с выпуском подкровельной толщи, а также последствия не полной выемки угля в отработанных участках шахт, которые наносят экологический ущерб в виде ...
Клишин, В. И., Никитенко, С. М., Пфаргер, Е. С.   +2 more
core  

Distribution Characteristics of Stress Sources and Surrounding Rock Structure Control Techniques of Gob‐Side Entry Driving in Extra‐Thick Coal Seam

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background.
Dongjie Jiang, Guangzhong Sun, Junjie Guo, Junwen Li, Xing Xu, Qi Ma, Arnab Biswas   +6 more
wiley   +1 more source

The Influences of Key Strata Compound Breakage on the Overlying Strata Movement and Strata Pressure Behavior in Fully Mechanized Caving Mining of Shallow and Extremely Thick Seams: A Case Study

Advances in Civil Engineering, 2019
In order to analyze the impact of compound breakage of key strata on overlying strata movement and strata pressure behavior during the fully mechanized caving mining in shallow and extremely thick seams, this paper took the 1322 fully mechanized caving ...
Junmeng Li, Yanli Huang, Jixiong Zhang, Meng Li, Ming Qiao, Fengwan Wang   +5 more
doaj   +1 more source