Results 71 to 80 of about 1,418 (251)

Casing Design Considerations for Horizontal Wells

Journal of King Saud University: Engineering Sciences, 1994
Horizontal Drilling is now a well established technique with growing popularity for exploiting a number of reservoirs which would otherwise be noncommercial.
Abdel-Alim Hashem, Fouad Khalaf
doaj   +1 more source

Gas–Solid Interface‐Assisted Growth of Organic Semiconductor Single Crystals: Dimensions, Structures, Mechanisms, and Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Gas–solid interface‐assisted growth strategies have unlocked precise control over crystal structure, morphology, dimension, and molecular packing. The obtained organic semiconductor single crystals represent the ideal candidates for high‐performance organic optoelectronic devices.
Tingyi Yan, Qing Tian, Jinwen Wang, Ke Jiang, Yage Han, Yuanzhuang Ren, Lingyun Li, Xiujuan Zhang, Jiansheng Jie   +8 more
wiley   +1 more source

Research Progress of Three‐Terminal Perovskite/Silicon Tandem Solar Cells Based on Back‐Contact Silicon

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Perovskite/silicon tandem solar cells offer efficiencies beyond 30%, yet conventional architectures face trade‐offs between optical performance and current matching. Three‐terminal tandems employing silicon back‐contact bottom cells eliminate the current‐matching constraint while minimizing optical losses, offering superior energy yield under real ...
Yunhao Fan, Sheng Ma, Huanpei Huang, Zhengping Li, Wenzhong Shen   +4 more
wiley   +1 more source

Selection of parameters for mud pumps used for HDD Systems [PDF]

Acta Montanistica Slovaca, 2006
Design solutions of rigs used for HDD are presented in the paper. HDD devices are classified on the basis of presented criteria, and then a division of rigs was proposed.
Jan Ziaja, Rafał Wiśniowski, Stanisław Stryczek   +2 more
doaj  

Optimization of Blasting‑Induced Roof Cutting Parameters in Key Stratum and Its Application in Gob‑Side Entry Retention Technology

Energy Science &Engineering, EarlyView.
This study addresses hard roof coal seam conditions by optimizing key stratum blasting‐cutting parameters through theoretical analysis, numerical simulation, and field tests. It proposes calculation methods for blast hole spacing and delay timing based on stress wave theory, controlling roadway deformation within 35 mm, thereby enhancing resource ...
Qiong Liu, Duanxiang Fu, Hongbin Li
wiley   +1 more source

Error compensation method of mine-used drilling trajectory measurement system

Gong-kuang zidonghua, 2015
The paper introduced structure and measuring principle of drilling trajectory measurement system, and elaborated error sources and compensation method in details from three aspects including sensor itself, environmental conditions and sensor installation.
LIANG Xiaojun, CHEN Guangzhu, JIANG Chenglin, JING Jianzhong, WU Yuanfang   +4 more
doaj   +1 more source

Borophene‐based sensing platforms: Pioneering ultrasensitive detection

FlexMat, EarlyView.
Schematic Diagram of Performance Optimization Strategies and Sensing Application Characteristics of Two‐Dimensional Boron‐Based Materials in Novel Sensors. Abstract Borophene is an emerging two‐dimensional (2D) material. Since significant breakthroughs were achieved in the experimental synthesis of borophene, the exploration and development of ...
Chi Yuan, Yanpeng Ji, Yi Liu, Guoan Tai
wiley   +1 more source

Magneto‐responsive fibers and fabrics for soft systems

FlexMat, EarlyView.
Abstract The combination of functional materials in fiber form has led to a surge in the integration of functional fibers and fabrics into soft systems that span sensing, communication, and actuation domains. A key subset is magnetic fibers and fabrics.
Hanlin Zhu, Jingxian Cui, Qingchao Fan, Zefeng Zhang, Chao Jiang, Hwa‐Yaw Tam, Yan Zhao, Zhe Wang, Zhixun Wang   +8 more
wiley   +1 more source

Research on Engineering Application of Directional Acoustic Remote Detection Technology in Adjacent Well Positioning

Cejing jishu
Whether it is for anti-collision in offshore cluster wells or the rescue of drilling accident wells, the adjacent well positioning technology used is increasingly valued by major oil companies.
ZHAO Long, CHE Xiaohua, ZHAO Teng, ZHANG Liwei, MEN Baiyong   +4 more
doaj   +1 more source

Early Feasibility of Registration of Micro‐PET/CT Scans to Annotated 3D Specimen Models

Head &Neck, EarlyView.
ABSTRACT Background Intraoperative 18F‐fluorodeoxyglucose (18F‐FDG) micro‐positron emission tomography/computed tomography (micro‐PET/CT) is an emerging modality for margin assessment. Prior to clinical use, micro‐PET/CT margin distances must be correlated with gold‐standard histopathology.
Joaquin Austerlitz, Andreja Radevic, Ashtyn McAdoo, Kyrionna Golliday, Cheng Ye, Daniel Fabbri, Adam J. Rosenberg, Marcus Balanky, Anas Alabkaa, Kim A. Ely, Mitra Mehrad, Spencer Roark, Eben Rosenthal, Michael C. Topf   +13 more
wiley   +1 more source