Results 101 to 110 of about 522 (199)

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

Design Optimization of High Pressure Nozzle for Hydraulic Jet Radial Drilling

Shiyou jixie, 2016
Considering the relatively blank area of high-pressure nozzle design for micro-borehole hydraulic jet radial drilling technology, based on parameter optimization of existing nozzle, combining the theoretical analysis and practical validation, and formula
Sun Jie
doaj  

Photonic nanovoids for tailored optoelectronic response in silicon solar cells

Responsive Materials, EarlyView.
Optoelectronic workflow followed by experimental validation, demonstrating state‐of‐the‐art efficiency gains. Abstract As crystalline silicon (c‐Si) solar cells become thinner to reduce cost and weight, the optical design principles that govern light trapping (LT) must evolve.
Ivan M. Santos, Miguel Alexandre, Valentin D. Mihailetchi, Kezheng Li, António T. Vicente, Eva Almeida, Mónica Dyreby, Tiago Mateus, Tomás Calmeiro, Elvira Fortunato, Rodrigo Martins, Hugo Águas, Manuel J. Mendes   +12 more
wiley   +1 more source

Scalable Room‐Temperature Terahertz Graphene Cameras

Small Methods, EarlyView.
ABSTRACT Terahertz (THz) imaging has emerged as a powerful tool for non‐destructive, label‐free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial‐dependent information in a broad range of frequencies, this technique enables the identification of chemical composition ...
Lili Shi, Leonardo Viti, Miriam S. Vitiello   +2 more
wiley   +1 more source

Sensitivity study on accuracy and relevant parameters in numerical modeling of internal tendon breaks

Structural Concrete, EarlyView.
Abstract This study investigates the numerical modeling of internal tendon breaks in prestressed concrete structures and evaluates the key parameters affecting accuracy. A combined approach is followed, involving global sensitivity analysis via the Elementary Effects Method and subsequent model calibration using experimental data from distributed fiber‐
Aeneas Paul, David Sanio, Peter Mark
wiley   +1 more source

Structural Design and Flow Field Characteristics of Self-Propelled Rotating Jet Nozzle

Shiyou jixie
The hydraulic jet radial horizontal well technology is of great significance for efficient and economic development of oil and gas in complex strata， as well as production enhancement in mature fields.
Mu Zongjie, Zhao Kai, Li Gensheng, Yang Zhehua, Hong Qigui, Yan Zhuang, Zhang Panpan   +6 more
doaj  

Characterization method and parameter analysis of multi-hole liquid CO2 flash boiling jet morphology during coal seam drilling process

Meitan xuebao
The application of hydraulic technology can markedly enhance the efficiency of coalbed methane extraction. Nevertheless, when it comes to enhancing permeability in deep, soft coal seams, existing hydraulic techniques often encounter challenges such as ...
Wenchuan LIU, Zhuoya ZHANG, Jiren TANG, Jiawei CUI, Huidong ZHANG, Yiyu LU   +5 more
doaj   +1 more source

Pulling force simulation of jet bits in radial drilling technology [PDF]

AGH Drilling, Oil, Gas, 2016
Jan Ziaja, Vasil' Movčan
openaire   +1 more source

Nonthermal plasma approaches for combating implant‐associated infections: A compendious review

VIEW, EarlyView.
Implant‐associated infections pose serious clinical challenges. Non‐thermal plasma (NTP) modifications overcome this bottleneck in distinct ways relative to traditional sterilization methods. Gas‐phase plasmas generate highly energetic species, UV radiation and reactive oxygen/nitrogen species (RONS), which alter the implant surface properties.
A. M. Trimukhe, Satish Rojekar, Amol Gholap, K. Navaneetha Pandiyaraj, Mukesh Patekar, Claudia Riccardi, R. R. Deshmukh, Tomáš Kovářík, Kalim Deshmukh   +8 more
wiley   +1 more source

Experimental Study of Different Radial Jet Drilling Parameters and Operation Regimes for Effective Well Stimulation

Applied Sciences
Radial waterjet drilling technology presents a modern solution to enhance oil recovery. This technology has already established itself at a number of oilfields, but selecting the best operational and technical parameters for radial waterjet drilling ...
Sergey Krivoshchekov, Alexander Kochnev, Evgeny Ozhgibesov, Alexey Yuzhakov   +3 more
doaj   +1 more source