Results 121 to 130 of about 5,303 (265)

Mechanical properties and rock-breaking effects of ridge-shaped PDC teeth

Jin'gangshi yu moliao moju gongcheng
Objectives: With the depletion of easily recoverable oil reservoirs, the focus of oil and gas exploration and development in China has shifted to "two deeps and non-conventional" oil and gas fields. This transformation is not only accompanied by a significant increase in well depth and more complex formation challenges but also presents more stringent ...
Zhitao XIE, Yuxuan ZHAO, Yong GUO, Desheng WU, Yadong LI   +4 more
openaire   +1 more source

Large‐Scale In Situ Formation Perovskite Quantum Dots/Elastomer Composite for High‐Performance White Light‐Emitting Diodes

Advanced Science, EarlyView.
A solvent‐free, open‐mill shear protocol nucleates 2.6 nm CsPbBr3 QDs uniformly within brominated butyl rubber. The emitters showed 91% PLQY, 1189 ns lifetime, and > 90% retention after 30‐day ambient storage and water immersion, respectively. Board‐to‐board forms 17 × 17 cm2 flexible films for 132% NTSC white LEDs, scintillators, and stretchable ...
Yuxian Su, Shirong Yu, Hao Shen, Dongdong Kang, Beibei Wang, Xuebin Yu, Yongyin Kang   +6 more
wiley   +1 more source

Circular Potential of Lithium‐Ion Battery Recycling Slags: Quantifying Microstructure and Elemental Distribution for a Holistic Valorization

Advanced Science, EarlyView.
A lithium‐bearing slag is investigated with the goal of holistic valorization. The present β‐eucryptite (LiAlSiO4) exhibits a high lithium content and low levels of impurities. The spinel contains most of the chromium and vanadium, representing additional valorization opportunities.
Peter Cornelius Gantz, Charlize Alexia Senkyr, Rüdiger Kilian, Andreas Neumann, Maximilian Korges, Daniel A. Frick, Hans Roggendorf, Ralf Wehrspohn, Stefan Stöber, Christiane Stephan‐Scherb   +9 more
wiley   +1 more source

Study on vibration characteristics of roadheader cutting pre-cracked hard rock. [PDF]

Sci Rep
Liu H, Li F, He J, Wang W, Zhang H.
europepmc   +1 more source

Transition Metal Compounds for Aqueous Ammonium‐Ion Batteries: Storage Mechanisms and Electrode Design

Advanced Science, EarlyView.
Aqueous ammonium‐ion batteries leverage hydrogen‐bond‐mediated NH4+ storage in tunable transition metal compounds. Despite progress in Mn‐, V‐, Mo‐, and W‐based compounds, 2D LDHs, and MXenes, challenges like structural instability and slow kinetics persist. Future advances require robust host design, mechanistic understanding via operando studies, and
Can Li, Ziyuan Lan, Hanghang Liu, Yunxuan Jiang, Lingfeng Zhu, Xiaoning Li, Bo‐Tian Liu   +6 more
wiley   +1 more source

Study on rock fragmentation and vibration response characteristics in hard rock formations using high-pressure gas expansion method. [PDF]

Sci Rep
Liu D, Jin Y, Cao K, Tang Y, Wang C.
europepmc   +1 more source

Dynamic Etching‐Induced Cl‐Terminated Ti3C2Clx/Ti3ZnC2 Heterostructure for Ammonia Electrosynthesis and Zinc‐Nitrogen Batteries

Advanced Science, EarlyView.
A stable Ti3C2Clx/Ti3ZnC2 heterostructure, fabricated by dynamic etching, exhibits outstanding electrocatalytic NRR activity (NH3 yield: 20.1 µg h−1 mg−1, FE: 38.1%) in alkaline media. The corresponding Zn‐N2 battery achieves a peak power density of 36.5 µW cm−2 and an NH3 yield of 13.1 µg h−1 mg−1, providing an advanced strategy for NH3 and ...
Yu Wang, Ying Sun, Liqun Ye, Jichi Liu, Hui Li, Yang Fu, Fengzhan Sun, Jieshan Qiu, Chang Yu, Tianyi Ma   +9 more
wiley   +1 more source

Mechanical properties of rock cutting by disc cutters and feasibility analysis of mechanical mining in Jinchuan No. 3 Mine with hard rock. [PDF]

Sci Rep
Zhao J, Huang D, Zhu D.
europepmc   +1 more source

Dual‐Strategy Design of Heterojunction‐Enhanced Piezoelectric Hydrogels for Periodontitis Treatment

Advanced Science, EarlyView.
This study developed a piezoelectric hydrogel integrating heterojunction enhancement and dual‐salt synergy, combining robust electrical performance with mechanical stability and bioactivity to better match the periodontal microenvironment. Under ultrasound activation, the hydrogel markedly promotes macrophage M2 polarization, thereby reducing the ...
Qiangqiang Zhou, Shaojun Fang, Changyi Li, Mengqi Zhou, Xin Sui, Chen Hu, Huaxing Xu, Shiyi Yang, Bing‐Qiang Lu, Rongjun Zhang, Xiaoling Wei   +10 more
wiley   +1 more source

Study on fault vibration characteristics of shield cutters based on FEM-MBD. [PDF]

Sci Rep
Chen J, Zhang P, Li S, Qiu S, Zhang T.
europepmc   +1 more source