Results 81 to 90 of about 1,276 (260)

Research of height of water flowing fractured zone of overburden strata in fully-mechanized top-coal caving

Gong-kuang zidonghua, 2015
In order to provide theoretical basis of roof water disaster prevention of No.3 coal seam in a working face after fully-mechanized top-coal caving, empirical formulas in Regulations of building, water, railway and leaving coal pillar and mining pressed ...
ZHANG Hui, ZHU Shuyun, LI Xiuhan, LI Tao, MENG Fanzhen   +4 more
doaj   +1 more source

Cave Sediments from Postojnska–Planinska Cave System (Slovenia): Evidence of Multi-Phase Evolution in Epiphreatic Zone

Acta Carsologica, 2008
The Postojnska jama–Planinska jama cave system and number of smaller adjacent caves are developed in the Postojnski kras. These caves are located between two dextral strike-slip fault zones oriented in the Dinaric direction. The caves contain lith­ologically diversified cave fill, ranging from speleothems to allo­genic fluvial sediments.
Nadja Zupan Hajna, Petr Pruner, Andrej Mihevc, Petr Schnabl, Pavel Bosák   +4 more
openaire   +2 more sources

Hunting Strategies and Game Exploitation Organization in the Magdalenian: An Integrated Approach Based on Mortality Profiles and Stable Isotopes at Chaves Cave (Huesca, Spain)

International Journal of Osteoarchaeology, EarlyView.
ABSTRACT Understanding hunting strategies in Upper Paleolithic contexts remains challenging due to the complex relationships between prey behavior, environmental conditions, and human decision‐making. Addressing these dynamics requires integrating archeozoological, geospatial, and geochemical proxies capable of capturing demographic patterns, landscape
Alejandro Sierra, Marie Balasse, Luis Jiménez, Rafael Domingo, Lourdes Montes, Denis Fiorillo, Pilar Utrilla   +6 more
wiley   +1 more source

Control of rock burst during deep tunnel blasting excavation based on energy release process optimizing

Rock Mechanics Bulletin
Blasting is widely used in hard rock tunnel excavation but often deteriorates the mechanical properties of the rock mass, forming a disturbance zone associated with energy evolution in the surrounding rock.
Sheng Luo, Qian Yuan, Dong Zhihong, Zhou Liming, Zhou Chunhua, Yang Zhaowei, Yan Peng   +6 more
doaj   +1 more source

Determination of the Zone with a Particularly High Risk of Endogenous Fires in the Goaves of a Longwall with Caving

Journal of Applied Fluid Mechanics, 2018
During ventilation of longwalls, part of the air stream migrates into goaves with caving. In the case where these goaves contain coal susceptible to spontaneous combustion, such air flow through the goaves may lead to the formation of favourable conditions for coal oxidation and, subsequently, for its self-heating and spontaneous combustion.
J. Brodny, M. Tutak
openaire   +2 more sources

A Hero's Journey to Systemic Change: Developing Expertise in Agricultural Development

Sustainable Development, EarlyView.
ABSTRACT Experts in rural development and agrarian change wield considerable influence over programme design and delivery, directing resources and shaping trajectories towards the Sustainable Development Goals (SDGs). Yet the pathways through which such expertise develops remain under‐examined. This study examines the journey to expertise among experts
Kirt Hainzer, Caitlin Finlayson, Nicholas Harrigan, Andrew McGregor, Katharine McKinnon, Van Touch, Ariane Utomo, Brian R. Cook   +7 more
wiley   +1 more source

Spatial and temporal changes in invertebrate assemblage structure from the entrance to deep-cave zone of a temperate marble cave

International Journal of Speleology, 2013
Seasonality in surface weather results in seasonal temperature and humidity changes in caves. Ecological and physiological differences among trogloxenes, troglophiles, and troglobionts result in species-dependent responses to this variability. To investigate these responses, we conducted five biological inventories in a marble cave in the Sierra Nevada
Tobin, Benjamin W, Hutchins, Benjamin T, Schwartz, Benjamin F   +2 more
openaire   +4 more sources

Morphological Sinus Features and Chronic Rhinosinusitis Risk: A Radiomics Study

World Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Objectives Anatomical factors of the sinuses significantly impact the progression of chronic rhinosinusitis (CRS). This study aims to investigate the correlation between morphological sinus features and the risk of CRS onset to provide evidence‐based support for clinical management.
Song Luo, Xiang‐Hai Hu, Min Yin, Song Li, Lei Cheng   +4 more
wiley   +1 more source

Toasting With Strangers? Export Spillovers From Chinese Winery Acquisitions in the Bordeaux Vineyards

British Journal of Management, EarlyView.
Abstract Foreign entrants may threaten and, at the same time, present local companies with opportunities for favourable spillovers. Building on the awareness‐motivation‐capability framework, this paper aims to provide empirical evidence for a positive co‐location or spatial proximity effect of foreign presence on local peer companies’ exports.
Pierre‐Xavier Meschi, Alexandre Bohas, Anne Norheim‐Hansen   +2 more
wiley   +1 more source

Development characteristics and prediction methods of the “three zones” in overlying strata under the 110 mining method

Rock Mechanics Bulletin
The 110 mining method is a novel coal mining approach that is environmentally friendly. To investigate the movement laws of the overburden strata under the mining conditions of this method, this study systematically analyzed the development ...
Xiaojie Yang, Xuhui Kang, Manchao He, Yajun Wang, Jun Zhang, Zhen Shi, Yuwen Chen   +6 more
doaj   +1 more source