Results 151 to 160 of about 55,265 (308)

Enhanced Rheological and Filtration Performance of Drilling Fluids Using Fe3O4/Saponin/Cu(II) Nanocomposites: Synthesis, Characterization, and Application

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Drilling fluids used in high‐performance well operations often struggle to maintain rheological stability, colloidal dispersion, and filtration control under harsh downhole conditions. This study engineered a multifunctional Fe3O4@Saponin/Cu(II) nanocomposite to address these challenges.
Kassem Al Attabi, Farag M. A. Altalbawy, Hana Ihsan Hassan, Ahmed Salih Sahib, Zahraa Saad Abdulali, Mariem Alwan, Mahmood Jawad, Hiba Mushtaq, Aseel Smerat, Fatimah Pashtun   +9 more
wiley   +1 more source

Improved boundary lubrication with formulated C-ethers [PDF]

A comparison of five recently developed C-ether-formulated fluids with an advanced formulated MIL-L-27502 candidate ester is described. Steady state wear and friction measurements were made with a sliding pin on disk friction apparatus.
Loomis, W. R.
core   +1 more source

Twist Engineering of Hybrid 2D van der Waals‐Transition Metal Oxide Membranes

Advanced Physics Research, EarlyView.
The integration of transition metal oxide membranes with 2D van der Waals materials offers exciting opportunities to study new interfacial phenomena. These interactions can create complex moiré patterns that change the materials' properties. Understanding these interactions, influenced by symmetry and distortion, poses significant challenges and ...
Mar Garcia Hernandez, Peter Bøggild, Mads Brandbyge, Jacobo Santamaria, Nini Pryds   +4 more
wiley   +1 more source

Clinical Physical Exam Shows High Sensitivity for Detecting Labral Tears in Individuals With Femoroacetabular Impingement Syndrome

Arthroscopy, EarlyView.
Purpose To determine the diagnostic performance of the combined use of radiographs and physical exam findings, compared with magnetic resonance arthrography (MRA) alone, for the primary diagnosis of labral tears in individuals with femoroacetabular impingement syndrome.
Carson Halliwell, Rebecca Moyer, George Konstantinidis, Eyal Amar, Ivan Wong   +4 more
wiley   +1 more source

Synthesis of trimethylolpropane trioleate by using stannous oxalate catalyst

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study was conducted to synthesize trimethylolpropane trioleate (TMPTO) using a stannous oxalate catalyst and investigate the dependence of the esterification rate on reaction variables. The highest esterification rate of approximately 99% was achieved at a 2.75:1 oleic acid/trimethylolpropane, 1.5% catalyst amount, 180°C reaction ...
Oguzhan Ilgen, Sumeyye Bilgic
wiley   +1 more source

Lubrication of space systems: Challenges and potential solutions [PDF]

Future space missions will all require advanced mechanical moving components which will require wear protection and lubrication. The tribology practices used today are primarily based upon a technology base that is more than 20 years old. This paper will
Fusaro, Robert L.
core   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

Biological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz, Maja Mielke, Stephan Handschuh, Anthony Herrel, Patrick Lemell, Léa Da Cunha, Nicolai Konow   +6 more
wiley   +1 more source

Debunking the Myth: A Dive Into the Role of Relational Capital in Sustainable Food Production Systems

Business Strategy and the Environment, EarlyView.
ABSTRACT The shift towards sustainable food production is essential to address the urgent dual challenges of climate change and population growth, with agricultural cooperatives playing a vital role in this transformation. However, many cooperatives struggle to deliver the expected value to their members.
Ismail Badraoui, Tarik Saikouk, Nejib Fattam, Ahmed Hamdi, Vikas Kumar   +4 more
wiley   +1 more source

Study on the mixed elasto-hydrodynamic lubrication characteristics of dynamically loaded journal bearings considering journal misalignment

Jixie chuandong
ObjectiveIn response to the unclear lubrication characteristics of dynamically loaded journal bearings under misaligned journal states, a mixed elasto-hydrodynamic lubrication model for dynamically loaded journal bearings considering journal misalignment
CAO Xi, TANG Xingbo, CHE Changfei, LIAO Jianfeng, FENG Chengke, ZHANG Chengyao, XIONG Guoqing   +6 more
doaj  

Computational and Machine‐Learning Studies of Ethylene Oligomerization

Carbon and Hydrogen, EarlyView.
This review focuses on recent advances in computational and machine‐learning studies of ethylene oligomerization, highlighting mainstream catalyst systems based on Co, Ta, Ti, Zr, and Hf, with particular emphasis on Fe‐ and Cr‐based catalysts and their controlling factors governing reactivity and LAO distribution.
Zhixin Qin, Zhihui Song, Heying Feng, Li Jin   +3 more
wiley   +1 more source