Results 91 to 100 of about 522 (199)

Numerical Simulation of Vertical Well Depressurization with Different Deployments of Radial Laterals in Class 1-Type Hydrate Reservoir

Energies
Gas production efficiency is a key indicator in the commercial development of natural gas hydrates (NGHs). Based on the data from the first natural gas hydrate field test production in the Shenhu Sea area of China, the gas production capability of Class ...
Tinghui Wan, Miao Yu, Hongfeng Lu, Zongheng Chen, Zhanzhao Li, Lieyu Tian, Keliang Li, Ning Huang, Jingli Wang   +8 more
doaj   +1 more source

Recent advances in multifunctional soft robots: A materials–structures–systems co‐design perspective for synergistic integration

FlexMat, EarlyView.
Abstract Soft robots, engineered from highly compliant materials, offer superior adaptability and safety in unstructured environments compared to their rigid counterparts. Recent advancements, fueled by bio‐inspiration and material programmability, have led to the rapid co‐evolution of their core modules: actuation, sensing, protection, energy, and ...
Qiulei Liu, Zicao Peng, Chong Sun, Haitao Yang   +3 more
wiley   +1 more source

Research on application of ultra-high pressure water jet slotting + nitrogen injection displacement technology

Meitan kexue jishu
In view of the basic characteristics of high gas content, poor permeability and short effective extraction time of No. 2 coal seam in 217 working face of Huangling No.2 well, the technical measures of ultra-high pressure water jet + nitrogen injection ...
Jun HUA, Guiqi HAN
doaj   +1 more source

First 20 Years of Orbitrap Mass Spectrometry as the Mainstream Analytical Technique

Mass Spectrometry Reviews, EarlyView.
ABSTRACT This review traces the first 20 years of Orbitrap mass spectrometry as a mainstream high‑resolution and accurate‑mass (HR/AM) technology. It outlines the historical development of the Orbitrap analyzer, the evolution of major instrument families, and the key technological innovations that enabled its widespread adoption. Particular emphasis is
Alexander Makarov
wiley   +1 more source

Radial jet drilling and heat transfer modelling in fractured reservoirs

, 2019
In this study, the application of the Radial Jet Drilling (RJD), a novel stimulating technique for enhancing productivity in the existing wells in deformable naturally fractured reservoirs was investigated using a robust three-dimensional finite element DFM (discrete fracture-matrix) model.
Torres, L., Salimzadeh, S., Medetbekova, Maiya, Nick, Hamid; id_orcid 0000-0002-0623-6095   +3 more
openaire   +1 more source

Balancing forage and fear: How people, environment and predators shape reindeer grazing in the Fennoscandian tundra

People and Nature, EarlyView.
Abstract The long history of reindeer herding in Fennoscandia has shaped the mountain tundra by influencing its productivity, nutrient and carbon cycling and vegetation structure. By partly limiting shrub expansion, extensive reindeer grazing contributes to ecosystem resilience and helps mitigate climate change effects.
Marianne Stoessel, Felicia Wikinger, Regina Lindborg   +2 more
wiley   +1 more source

Study on Automatic Flow Distribution Nozzle

Shiyou jixie, 2015
To address the issues of conventional self-feeding nozzle during radial horizontal drilling like low drilling capacity and low self-traction driving force,an automatic flow distribution nozzle has been designed.The nozzle is mainly composed of front and ...
Zhang Youjun, Yu Dongbing, Zhang Yan, Hu Qiangfa, Chen Zhi   +4 more
doaj  

Study on flow field characteristics and key parameter optimization of hydraulic multi-hole rotating nozzles

Gong-kuang zidonghua
Limited by the confined spaces and complex coal and rock conditions in underground mines, hydraulic jet drilling requires smaller nozzles to create larger hole diameters. This study focused on optimizing the key layout parameters for the forward nozzles,
BA Quanbin
doaj   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Recurving tropical cyclones in the western North Pacific are stronger than non‐recurving ones: Causes and implications

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates the statistical characteristics of recurving tropical cyclones (TCs) over the western North Pacific (WNP). We find that recurving TCs are, on average, 38% stronger than non‐recurving TCs, owing to longer ocean exposure, fewer landfalls, and passage through warmer, more favorable thermal environments.
Md Afjal Hossain, Il‐Ju Moon, Vineet Kumar Singh, Hyeyoon Jung   +3 more
wiley   +1 more source