Results 61 to 70 of about 66,927 (247)

Insights into the Transformation Patterns of Overmature, Organic-Rich Shale Reservoirs under High-Temperature Conditions: Evidence from Physical Experiments

Yankuang ceshi
The efficient development of shale oil and gas is crucial for China’s energy security. Shale exhibits characteristics such as well-developed bedding planes, strong heterogeneity, low porosity, and low permeability. Previous studies have demonstrated that
Yangbing LI, Jianqi CHEN, Weiqiang HU, Xueqing LIU, Litao MA, Panpan LI, Chenchen LI   +6 more
doaj   +1 more source

Application of Thermal Resistant Gemini Surfactants in Highly Thixotropic Water-in-oil Drilling Fluid System

Open Chemistry, 2019
Traditional water-in-oil drilling fluids are limited by their shear thinning behavior. In this article, we propose the synthesis of a thermal resistant quaternary ammonium salt gemini surfactant DQGE-I. This surfactant was synthesized using monomers such
Liu Yonggui, Zhang Yang, Yan Jing, Song Tao, Xu Yongjun   +4 more
doaj   +1 more source

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source

Synthesis and application of polyacrylate reverse demulsifier with high stability

Gongye shui chuli
Polyacrylate reverse demulsifier CR-3 was synthesized with methyl methacrylate, ethyl acrylate, and styrene as monomers by aqueous polymerization method. The effects of emulsifier type, emulsifier dosage, and effective content of CR-3 on the stability of
GUO Xiaoyi, ZHANG Ying, WANG Yongjun, LIU Xuemin, CUI Guangzhen, WU Jiefeng   +5 more
doaj   +1 more source

Multilateral drilling & completion technology based on Solid Expandable Tubular fixing system

Petroleum Exploration and Development, 2009
A new multilateral technology is developed based on the Solid Expandable Tubular (SET) fixing system. By this new technology, every kinds of tool in drilling, completion, well repair, and oil-formation improvement are located and operated according to ...
Zhang Yanping, Ren Rongquan, Wang Hui, Wang Jun   +3 more
doaj   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Thermal Evaluation of Bone Drilling: Assessing Drill Bits and Sequential Drilling

Bioengineering
Sequential drilling is a common practice in dental implant surgery aimed at minimizing thermal damage to bone. This study evaluates the thermal effects of sequential drilling and assesses modifications to drilling protocols to manage heat generation.
Sihana Rugova, Marcus Abboud
openaire   +3 more sources

An Ultrafast Self‐Gelling Versatile Hydrogel for Rapid Infected Burn Wound Repair in Military Medicine

Advanced Functional Materials, EarlyView.
A self‐gelling PG@PAC (POD/Gel‐CDH@PA/CHX) powder is developed for infected burn care in austere settings. Upon contact with wound exudate, it instantly forms an adhesive hydrogel, providing simultaneous hemostasis, broad‐spectrum antibacterial activity, reactive oxygen species scavenging, and immunomodulation. In a murine model of S.
Liping Zhang, Zhangrui Wu, Xiansheng Zhao, Geng Wang, Quyang Yang, Minxia zhang, Xiaowei Wang, Xiujun Cheng, Changyue Wu, Dan Wu, Yutian Yang, Canbin Dong, Tao Zhang, Weiqiang Tan, Ningwen Zhu   +14 more
wiley   +1 more source

The Social Production of Age, Space and Exclusion: Towards a More Theory‑Driven Understanding of Spatial Exclusion Mechanisms in Later Life

Sociální studia, 2018
Gerontology has for a long time been described as “data rich, but theory poor”. This is true for the study of spatial exclusion, too: in a recent scoping review on old‑age exclusion, Walsh and his colleagues called for more theoretical work in the field ...
Thibauld Moulaert, Anna Wanka, Matthias Drilling   +2 more
doaj  

Injectable Dual‐Network Hydrogel System for Osteochondral Repair Combining Immunomodulation, Mechanical Adaptability, and Enhanced Tissue Integration

Advanced Functional Materials, EarlyView.
A UV‐triggered injectable dual‐network hydrogel is reported as the first application of bletilla striata polysaccharide (BSP) in osteochondral repair. By integrating methacrylamide‐modified BSP and nitrobenzaldehyde‐functionalized hyaluronic acid, the system achieves immunomodulation, mechanical reinforcement, and dynamic tissue adhesion, thereby ...
Jiaming Cui, Feifei Zhou, Yuan Luo, Tao Ouyang, Huiwu Zhang, Songmiao Cheng, Qiang Li, Xu Jiang, Yingying Yu, Yicheng Wang, Hong Ming   +10 more
wiley   +1 more source