Results 81 to 90 of about 25,943 (301)

Lubricant effects on bearing life [PDF]

open access: yes
Lubricant considerations for rolling-element bearings have within the last two decades taken on added importance in the design and operation of mechanical systems.
Zaretsky, Erwin V.
core   +1 more source

Zinc and Strontium‐Doped Titania Nanotube Surfaces Enhance Antibacterial Activity and Increase Osteogenic Differentiation of Mesenchymal Stem Cells

open access: yesAdvanced NanoBiomed Research, EarlyView.
Bacterial infection and poor integration often lead to orthopedic implant failure. Modifying implant surfaces can improve osseointegration. Titanium has been engineered to form titania nanotubes doped with zinc and strontium. These surfaces were evaluated for antibacterial effects and their ability to promote osteogenic differentiation in stem cells ...
Abhishek Bhattacharjee   +4 more
wiley   +1 more source

EFFECT OF METALLIC SOAPS ON POLYMERISATION

open access: yes, 1953
Effect of a few oil-soluble, surface-active agents and the oleates of Cr, Ag, Cd, Pb, Cu on the benzoyl peroxide catalysed polymerisation of styrene in solution and that of the soaps of Mn, Zn, Cd, Co, Ni, Al, Fe etc. on the polymerisation of methyl methacrylate and styrene in absence of peroxide catalyst have been studied.
JYOTIRINDRA NATH SEN, SANTI R. PALIT
openaire   +1 more source

The J-Curve at the industry level: evidence from U.S.-India trade [PDF]

open access: yes
Previous studies that investigated the impact of real depreciation of the rupee on Indian trade balance used aggregate trade data and provided mixed results.
Mohsen Bahmani-Oskooee, Rajarshi Mitra
core  

Ultrafast Biodiesel Synthesis via K2CO3‐Supported Mg‐Al Hydrotalcite Catalyst With Tailored Basicity and Mesoporous Structure

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT With the increasing global energy demand and the growing prominence of environmental issues, biodiesel has garnered significant attention as a renewable, low‐emission green energy source. Conventional hydrotalcite‐based catalysts often suffer from insufficient basicity and limited accessibility of active sites, leading to relatively long ...
Jingdi Zheng   +4 more
wiley   +1 more source

Does Openness Promote Competition? A Case Study of Indian Manufacturing [PDF]

open access: yes
This paper uses firm level data for the period 1989-2001 to analyse the working of competition in India’s manufacturing sector. It examines the impact of greater competition on profit mark-up over the last decade.
Pant, Manoj, Pattanayak, Manoranjan
core   +1 more source

Hydrogen‐Enriched Microbial Oil Biodiesel With Hybrid Nanoparticles Impact on Diesel Engine Efficiency and Emissions

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study examines a dual‐fuel enhancement strategy that combines hydrogen enrichment with hybrid nanoparticle (HNP) doping. The aim is to improve combustion, performance, and emission characteristics of microbial oil biodiesel (MOB) in compression ignition engines.
D. Premkumar   +3 more
wiley   +1 more source

Environmental Impact of Orthodontics: A Literature Review of Traditional Multibracket Appliances and Clear Aligners. [PDF]

open access: yesInt J Dent
Introduction Climate change has led to a growing interest in environmental sustainability in the healthcare sector, including orthodontics. This review aims to analyze and compare the environmental footprint of traditional multibracket appliances (TMAs) and clear aligners (CAs), focusing on five aspects: manufacturing process, pollution from raw ...
Peluso A   +3 more
europepmc   +2 more sources

Comparative invention performance of major industrial countries: Patterns and explanations [PDF]

open access: yes
The paper firsjt presents an analysis of invention performance; as measured by patenting activities, of six countries (France, Italy, Japan, United Kingdom, USSR, West Germany) relative to the United States for 41 SIC industries over the past twenty ...
Glismann, Hans H., Horn, Ernst-Jürgen
core  

The effects of carboxylic acids in aluminum anodizing [PDF]

open access: yes, 2017
Hard-anodized alumina coatings were formed in sulfuric acid at low temperature and high current density in the presence of carboxylic acid additives. Citric acid, trimesic acid, mellitic acid and ethylenediaminetetraacetic acid (EDTA) were utilized in ...
Koczera, Abby E
core   +1 more source

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