Results 51 to 60 of about 522 (199)

Optimasi Produksi Sumur CBM dengan Radial Jet Drilling (RJD)

JST (Jurnal Sains Terapan), 2020
To produce gas methane from the coal bed methane (CBM) field requires the right completion system that considers the reservoir properties which are encountered. One of technologies that is recommended to produce gas methane in the CBM field is Radial Jet Drilling System (RJD). Two important aspects which are considered to test the feasibility of RJD in
Rohima Sera Afifah, Karmila Karmila, Arief Adhiksana, Andi Jumardi   +3 more
openaire   +2 more sources

An Imaging‐Guided, Patient‐Specific Guiding Aid (RWNGuide) for Safe and Reproducible Inner Ear Drug Delivery

Advanced Materials Technologies, EarlyView.
A patient‐specific, imaging‐guided aid enables precise and reproducible drug delivery to the inner ear. By guiding therapeutic agents directly to the round window niche, this approach reduces variability in drug localization, improves delivery safety, and addresses a critical bottleneck in inner ear therapy, offering a scalable strategy for precision ...
Yanjing Luo, Shanshan Jiang, Yimian Luo, Adele Moatti, Farnaz Matin‐Mann   +4 more
wiley   +1 more source

Numerical analysis on fracture initiation from radial micro‐hole in anisotropy formation

Energy Science & Engineering, 2021
The radial jet drilling (RJD) technology is typically developed to open multiple lateral micro‐holes from a main wellbore to the formation. The multiple groups of 3D numerical models of radial micro‐holes through a main well are built by incorporating ...
Yumei Li, Tao Zhang, Yiming Zheng, Jinghua Zhang, Tao Wen, Shibin Sun   +5 more
doaj   +1 more source

Optimization of coal seam permeability improvement technology by radial multi-branch borehole high pressure combined water jet

Meikuang Anquan, 2021
In order to solve the problems such as high density of gas drainage hole, small influence range of single hole drainage, little amount of drainage, frequent carrying of drilling rig and low working efficiency, using high pressure combined water jet ...
FU Hui, KOU Jianxin, QIN Pei
doaj   +1 more source

The Evolution of Aerosol Jet Printing, A Review: Enhancing Material Versatility and Improvements for Next‐Generation Applications

Advanced Materials Technologies, EarlyView.
Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee, Rocco Lupoi, Michael J. Gibbons   +2 more
wiley   +1 more source

Hybrid Continuum Robot Designs and Architectures for Healthcare Applications

Advanced Robotics Research, EarlyView.
Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir, Muhammad A. Khalid, Manish Chauhan, Pietro Valdastri, James H. Chandler   +4 more
wiley   +1 more source

Analysis and Application of Two Kinds of Domestic Water Jet Radial Drilling Tools

Shiyou jixie, 2018
The main problem of the new type of water jet radial drilling technology in foreign countries is that casing milling and borehole reaming must be conducted, which affects the operating efficiency. The structure, working principle and operation technology
Chen Zhi, Zhang Youjun, Fei Jiegao, Hu Qiangfa, Zhang Yan, Jia Xia   +5 more
doaj  

External Flow Field and Rock Erosion Characteristics of a Coaxial Straight‐Swirling Mixed Jet

Energy Science & Engineering
Radial jet drilling is an effective technology for mining coal‐bed methane. A self‐propelled jet bit greatly affects drilling efficiency. Simulations and laboratory experiments using a coaxial straight‐swirling mixed jet (CSMJ) were performed to study ...
Peng Du, Zhao Peng
doaj   +1 more source

Analysis on the Shape and Impact Pressure of the High-Pressure Water Jet during the Hydraulic Flushing Cavity Technique

Geofluids, 2021
A large proportion of minable coal seams in China belong to low-permeability soft coal seams. Such coal seams suffer serious coal and gas outburst hazards and endure a high incidence of major disasters in coal mines.
Shouqing Lu, Chengfeng Wang, Wei Wang, Mingjie Li, Dongti Zhang   +4 more
doaj   +1 more source

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source