Results 51 to 60 of about 571 (270)

Synergistic Physicochemical Inhibition of Reactive Shale Formations Using Hydrothermally Synthesized Hydroxyapatite Nickel Tungstate Nanocomposites in Water‐Based Drilling Fluids

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Wellbore instability driven by the volumetric expansion of reactive shale formations remains a primary operational challenge in modern drilling engineering, causing severe mechanical failures and substantial economic deficits. The objective of this study is to formulate and evaluate a novel dual‐action chemical additive capable of ...
Ghaleb Oriquat, Basim Abdul Alrhym, A. C. Umamaheshwer Rao, Shivam P. Chaudhary, Pardeep Singh Bains, Ripendeep Singh, Murotov Nurshod, Rasulbek Eshmetov, Ahmad Abumalek   +8 more
wiley   +1 more source

The Effect of Powder Composition on Cyclic Oxidation Behavior of CO-Deposited Al-Si Cating on Nickle-Based Superalloy

Iranian Journal of Materials Science and Engineering, 2020
In this study, Si-modified aluminide coating on nickel-base superalloy IN-738LC was prepared using a pack cementation method with various powder compositions at 1050 °C for 6 h.
M. Ghasemian Safaei, S. Rastegari, R. Latifi   +2 more
doaj  

Formation Mechanism of Aluminide Diffusion Coatings on Ti and Ti-6Al-4V Alloy at the Early Stages of Deposition by Pack Cementation

, 2019
The diffusion coatings were deposited on commercially pure Ti and Ti-6Al-4V alloy at up to 1000 °C for up to 10 h using the pack cementation method. The pack powders consisted of 4 wt% Al (Al reservoir) and 4 wt% NH4Cl (activator) which were balanced
Yanhua Lei, Li Fan, Zhichao Qiu, Hailiang Du, Jiajie Zhuang, Ning Tan   +5 more
core   +1 more source

Enhanced Adhesion Strength of Pt/γ-Al2O3 Catalysts on STS-444 Substrate via γ-Al2O3 Intermediate Layer Formation: Application for CO and C3H6 Oxidation

, 2021
Pt/γ-Al2O3 catalysts coated on honeycomb-shaped stainless STS-444 steel substrates with a γ-Al2O3 intermediate layer were prepared using a conventional washcoating method.
Hojin Jeong, Cheol Hong Hwang, Seung-Hee Ryu, Giyeong Kim, Joon Sik Park, Joon-Hwan Choi, Sung Il Ahn   +6 more
core   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

Deposition of a low-activity type cobalt-modified aluminide coating by slurry aluminizing of a pre-Co-electroplated Ni-based superalloy (IN738LC)

Journal of Materials Research and Technology
Incorporating the Co element into the β-NiAl phase as a third element enhances the hot corrosion and oxidation properties of aluminide coatings. The deposition of Co-modified aluminide coatings is limited to co-deposition by the pack cementation method ...
Shayan Sarraf, Saeed Rastegari, Mansour Soltanieh   +2 more
doaj   +1 more source

Differences in predominant collagen fiber orientation between dorsal and plantar trabecular bone tracts of adult mule deer calcanei suggest strain‐mode‐specific adaptation

The Anatomical Record, EarlyView.
Polarized microscopic images of the outer bone cortex (a and b) and deeper trabecular bone (c and d) of the deer calcaneus in thin cross‐sections. The brighter gray levels reflect more oblique‐to‐transverse collagen fibers in the compression/dorsal bone (a, c) and the darker gray levels reflect more longitudinal collagen in the tension/plantar bone (b,
John G. Skedros, John T. Cronin, Chad S. Mears, Brett W. Richards   +3 more
wiley   +1 more source

Diffusion paths of silicide coatings on Nb-Si-based alloys during pack cementation process

, 2019
Silicide coatings and B-modified silicide coatings were deposited on Nb-Si-based alloys by means of pack cementation method at 1573 K. The phase sequence of the coating/substrate system was investigated in detail by X-ray diffraction (XRD), scanning ...
Chungen Zhou, Zhou, Chungen, Shao, Wei, Wei Shao, Yuwen Cui, Cui, Yuwen   +5 more
core   +1 more source

7000 Years of Aboriginal Mining at Sugarloaf Hill in the Riverland Region of South Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Silcrete and chert are commonly represented in Aboriginal archaeological lithic assemblages across large parts of the southwestern Murray‐Darling Basin (MDB). In South Australia (SA), these materials were sourced from a series of quarries located along the incised course of the Murray River through the upper Riverland region.
Craig Westell, Ian Moffat, Richard Fullagar, Amy Roberts, Justine Kemp, Mike Morley, Marc Fairhead, Simon Hoad, River Murray and Mallee Aboriginal Corporation   +8 more
wiley   +1 more source

Late‐Onset Rheumatoid Arthritis and Air Pollution in the Multiethnic Cohort

Arthritis &Rheumatology, EarlyView.
Objective To evaluate the effects of ambient air pollution on rheumatoid arthritis (RA) incidence in a racially and ethnically diverse population. Methods This analysis included 42,152 California Multiethnic Cohort participants, aged ≥65 years (>70% African American and Latino adults) who were enrolled in the Fee For Service component of Medicare (2001–
Anna H. Wu, Chiuchen Tseng, Song‐Yi Park, Daniel O. Stram, Kami White, Jun Wu, Cheryl Vigen, Veronica W. Setiawan, Xian Yu, Steven Gazal, Christopher Haiman, Lynne Wilkens, Loïc Le Marchand, Iona Cheng, William Stohl   +14 more
wiley   +1 more source