Results 71 to 80 of about 41,718 (241)

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source

Numerical Simulation of the Flow Field of the PDC Bit Supporting the Pulse Jet Based ROP Improvement Tool

Shiyou jixie, 2020
In order to give full play to the performance of the ROP improvement tool based on pulsed downhole alternating flow field, this paper studied its support PDC bit by means of numerical simulation.
Fan Jiqiang, Wang Guanjun, Wang Shengliang, Shi Huaizhong, Hou Xinxu, Li Shuowen   +5 more
doaj  

Real‐time lithology identification while drilling based on drill cuttings image analysis with ensemble learning

Deep Underground Science and Engineering, EarlyView.
A lithology identification while drilling method was developed, integrating an automated cuttings sampling system, a smart drilling rig, and an ensemble learning model. Underground trials achieved 97.42% accuracy in real‐time identification of cuttings lithology and composition, enhancing hazard management and supporting unmanned drilling technology in
Kun Li, Ting Ren, Ningping Yao, Jon Roberts, Haitao Song, Zhongbei Li, Xueqiu He, Liang Zhao   +7 more
wiley   +1 more source

Vanadium(v) phenolate complexes for ring opening homo- and co-polymerisation of ε-caprolactone, L-lactide and rac-lactide [PDF]

, 2015
The vanadyl complexes [VO(OtBu)L¹ ] (1) and {[VO(OiPr)]₂ (μ-p-L²ᵖ)} (2) {[VO(OR)]₂ (μ-p-L²ᵐ )} (R = iPr 3, tBu 4) have been prepared from [VO(OR)₃ ] (R = nPr, iPr or tBu) and the respective phenol, namely 2,2′-ethylidenebis(4,6-di-tert-butylphenol) (L¹ ...
Al-Khafaji, Yahya, Dan, Yi, Elsegood, Mark R. J., Ge, Feijie, Jiang, Long, Prior, Timothy J., Redshaw, Carl   +6 more
core   +2 more sources

Development and Field Test of Vibration Drag Reduction Tool

Shiyou jixie, 2021
The backing pressure phenomenon of bit is an important factor restricting the wellbore extension of horizontal wells. In order to effectively reduce the backing pressure phenomenon of bit, a vibration drag reduction tool was developed. The vibration drag
Mu Zongjie, Li Gensheng, Zang Chuanzhen, Ma Jun   +3 more
doaj  

A systematic review evaluating the performance of eDNA methods relative to conventional methods for biodiversity monitoring

Ecography, EarlyView.
The rapid adoption of environmental DNA (eDNA) methods has drastically changed biodiversity monitoring efforts. It is often claimed that eDNA methods are more sensitive and efficient than conventional biodiversity monitoring methods, but it is often unclear what metrics support this claim.
Nicholas J. Iacaruso, Olivia P. Reves, Sara J. Merkelz, Cassidy L. Waldrep, Mark A. Davis   +4 more
wiley   +1 more source

Modeling Social Sensory Processing During Social Computerized Cognitive Training for Psychosis Spectrum: The Resting-State Approach

Frontiers in Psychiatry, 2020
Background: Greater impairments in early sensory processing predict response to auditory computerized cognitive training (CCT) in patients with recent-onset psychosis (ROP).
Lana Kambeitz-Ilankovic, Lana Kambeitz-Ilankovic, Julian Wenzel, Julian Wenzel, Shalaila S. Haas, Anne Ruef, Linda A. Antonucci, Linda A. Antonucci, Rachele Sanfelici, Rachele Sanfelici, Marco Paolini, Nikolaos Koutsouleris, Bruno Biagianti, Bruno Biagianti   +13 more
doaj   +1 more source

Fluoro‐Functionalized Polyether Electrolytes Enabling High‐Energy‐Density Solid‐State Lithium‐Metal Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fluoro‐functionalized polyether electrolytes, which combine fluorine‐ and ether‐containing groups, achieve enhanced oxidative stability, high ionic conductivity, and superior interfacial stability. Due to their non‐flammability, remarkable flexibility, ease of processing, and design versatility, polymer‐based electrolytes containing polyethers have ...
Nannan Geng, Chenkai Lu, Wenbei Li, Qianxin Liu, Zixuan Zhou, Tao Yang, Yin Cui, Guobin Zhang, Xidong Lin   +8 more
wiley   +1 more source

Quantifying Parametric Influence on Cuttings Transport in Deviated Deep Wells Using Global Sensitivity Analysis Methods

Energy Science &Engineering, EarlyView.
Cuttings transport simulation workflow. ABSTRACT Efficient cuttings transport is essential for wellbore stability and minimizing non‐productive time in deviated and horizontal wells. This study applies global sensitivity analysis (GSA) to evaluate the influence of 14 drilling parameters on cuttings transport using WellPlanTM hydraulic simulations ...
Esraa A. Refaie, Said K. El‐Sayed, Ahmed Z. Noah, Mostafa M. Abdelhafiz   +3 more
wiley   +1 more source

Partnership for Sustainability: A Case Study of BAZ County [PDF]

, 2006
The purpose of the study is to present and discuss a project which can solve the environmental sustainability problems of companies involving students in their work.
Gubik, Andrea, Tóth Szita, Klára
core