Results 31 to 40 of about 4,032 (249)

Composition, Structure and Diversity of Vegetation on Asphalt Post-Mining Sites in Buton Island, Indonesia [PDF]

Floresta e Ambiente, 2023
Studies related to reclamation on asphalt post-mining land are lacking. This study aimed to analyze the diversity of vegetation on asphalt post-mining sites in Buton, Southeast Sulawesi Province, Indonesia. The study focused on the composition, structure
Albasri Albasri, Faisal Danu Tuheteru, Husna Husna, Sugeng Budiharta, Edy Jamal Tuheteru, Sri Mulyono, Tedi Yunanto, Veni Karlin   +7 more
doaj   +1 more source

Study on stability of overlying rock structure in fully mechanized top coal caving mining under loess gully landform

Meikuang Anquan, 2021
In view of the obvious characteristics of mining pressure in Wangjialing Coal Mine under the loess gully landform, the Get Data software was used to extract the elevation data within the mining range, and Surfer was used to process the data to construct
QIN Xiwen, YANG Xiuyu, JU Wentao
doaj   +1 more source

Study on rotation angle and three-zone deformation characterization of hinged structure of mining overburden rock based on OFDR

Meitan kexue jishu
In order to study the fiber optical strain characterization method of the overlying rock structure during mining in a certain mine in northern Shannxi, based on the engineering geological conditions of 12217 working face in Buertai Mine, the strain ...
Qi LIU, Xianglin LIU, Guangyong CAO, Jinhai ZHAO, Changbao JIANG   +4 more
doaj   +1 more source

Study on the Evolution Characteristics of Two-Zone Failure Mode of the Overburden Strata under Shallow Buried Thick Seam Mining

Advances in Civil Engineering, 2019
There are risks of water burst and sand inrush in the working face of the Northwest Mining Area in China. Based on the 22407 working face of Halagou coal mine, the evolution characteristics and mechanism of a two-zone failure mode of the overburden ...
Daming Yang, Wenbing Guo, Yi Tan
doaj   +1 more source

THE EFFECT OF THE OVERBURDEN STRUCTURE AND INTERFACES CURVATURE ON AVO INVERSION OF PP-REFLECTIONS

Russian Journal of geophysical technologies, 2020
In this paper, we consider an effect of incorrect accounting of the overburden structure and interfaces curvature on results of nonlinear AVO inversion. The research is carried out on synthetic data obtained using ray method for two- and three-layer models with convex and concave interfaces. We show that neglect of the overburden heterogeneity leads to
T. V. Nefedkina, N. N. Shilov
openaire   +2 more sources

Research on overburden structure of large mining height working face in shallow seam

Meitan xuebao
Based on the overburden conditions of Shendong and Northern Shaanxi coal bases, through the statistical analysis of the measured roof weighting characteristics and overburden caving height in large mining height working faces, combined with physical ...
Qingxiang HUANG, Jinlong GAO, Yehao WEI
doaj   +1 more source

Structure of soft and hard interbedded overburden rock under the influence of thickness ratio affects the cross fusion of pressure relief gas transportation and storage area

Meitan kexue jishu
In order to grasp the thickness ratio effect of soft and hard interbedded overburden structure on the cross–fusion of pressure relief gas transportation and storage area, the soft and hard interbedded overburden structure with different thickness ratios ...
Pengxiang ZHAO, Wenbo PEI, Shugang LI, Haifei LIN, Risheng ZHUO, Zechen CHANG, Qiudong SHAO, Xiaochuan MA   +7 more
doaj   +1 more source

Determining Parental Factors for Clinical Trial Attrition in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background/Objectives Despite high enrollment rates on Children's Oncology Group (COG) protocols, attrition after initial consent is challenging, introducing bias and prolonging trial completion. While adult oncology literature has identified predictors of withdrawal, little is known about caregiver decision‐making for child participation in ...
Kimberly L. Stathas, Jakob Q. Weiss, Kellee N. Parker, Cathy Lee‐Miller   +3 more
wiley   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Soil-water characteristic curve of sandy clayey purple soil under different overburden pressures

Yantu gongcheng xuebao, 2021
The soil-water characteristic curve (SWCC) of sandy clayey purple soil in Chongqing of China is investigated under different overburden pressures (0, 40, 100, 200 kPa) using the stress-dependent SWCC pressure plate extractor by Geo-Experts Ltd ...
LI Da 1, WANG Shi-ji 1, LI Xian 1, CHEN Hong-kai 2, LIANG Guang-chuan 1, JIANG Wen-jun 1
doaj   +1 more source