Results 41 to 50 of about 7,129 (263)

In Situ Observation of Transient Responses in Grease Lubrication by Micro Infrared Spectroscopy

Tribology Online, 2020
In situ observation of lubricant films formed with greases was carried out at EHL conditions with a micro-FTIR. Three urea compounds were used as a thickener and 12 mass percent of the thickener was added in PAO, respectively. From the IR spectra, CH and
Yasushi Hoshi, Koji Takiwatari, Hidetaka Nanao, Shigeyuki Mori   +3 more
doaj   +1 more source

Characterization of Fatty Acid Profiles and Nutritional Quality Indices in Commercial Spreadable Processed Cheeses: Comparative Analysis and Health Implications

Food Safety and Health, EarlyView.
Natural processed cheeses showed a more favorable nutritional profile, including higher unsaturated fatty acids and better functional performance. A balanced fatty acid composition was identified as a key factor influencing meltability, oil separation, and overall quality of processed cheeses.
Shaimaa M. Hamdy, Amr A. Metwally, Mahmoud A. Deghedie, Hani S. Abdelmontaleb   +3 more
wiley   +1 more source

Tribological Performance of Phosphonium Ionic Liquids as Additives in Lithium Lubricating Grease

Lubricants, 2018
Three oil–miscible phosphonium ionic liquids with different structures were synthesized and used as additives for a Poly Alpha Olefin 10 (PAO 10) lithium lubricating grease. Different from other additives, the ionic liquids participated in saponification
Zeyun Wang, Jun Chang, Chao Cai
doaj   +1 more source

PFAS properties and destruction methods: A focus on enzymatic degradation

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract Per‐ and polyfluoroalkyl substances (PFAS) are known as ‘forever’ chemicals and have lasting detrimental impact on the environment and living organisms. To understand PFAS molecules better, this review begins with an overview of PFAS definition, classifications and applications, and then provides a comprehensive summary and critical analysis ...
Guobin Liang, Hua Zhao
wiley   +1 more source

Comparison of Different Standard Test Methods for Evaluating Greases for Rolling Bearings under Vibration Load or at Small Oscillation Angles

Lubricants, 2023
Rolling bearings operated at small oscillation angles or exposed to vibrations during standstill show typical damage after only a short period of operation.
Markus Grebe, Alexander Widmann
doaj   +1 more source

Activating Paper Applying Gelatin, Starch and Chitosan Coatings Loaded With O/W Emulsions Encapsulating Rutin, Carvacrol and α‐Tocopherol

Packaging Technology and Science, EarlyView.
Emulsion type governed the microstructure and functionality of papers coated with biopolymers matrix loaded with hydrophobic bioactives encapsulated into O/W emulsions. Emulsified systems improved UV–Vis barrier and antioxidant activity, whereas gelatin coatings with conventional or Pickering emulsions provided the greatest mechanical reinforcement ...
Kamila de L. Santos, Ana Mônica Quinta Barbosa Bittante, Rodrigo Vinícius Lourenço, Júlio Cesar de Carvalho Balieiro, Paulo José do Amaral Sobral   +4 more
wiley   +1 more source

Formulation of biogrease from castor waste [PDF]

, 2014
Grease is a mixture of a fluid lubricant usually petroleum oil and a thickener (soap) dispersed in the oil. The base oil (petroleum) can be changed by using the castor waste. Other than base oil, thickener may play an important role in the mixture.
Nuratiqah, Ismail
core  

Improving The Tribological Characteristics of In-House Made Acid-Activated Iraqi Bentonite Lubricating Greases Using Graphite and Polytetrafluoroethylene Nanoplatelets as Additives

Diyala Journal of Engineering Sciences
Traditional soap-based greases such as lithium and calcium are no longer able to meet the requirements of high-performance lubrication due to their high cost and environmentally harmful nature, thus there is a need for new solid, non-organic and non ...
Mustafa G. Hasan, Bashir Y. Al-Zaidi , Zaidoon M. Shakor   +2 more
doaj   +1 more source

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

steel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo, Anumoy Ganguly, Lucas Varoto, Tim M. Schwarz, Jean‐Baptiste Letz, Ubaid Manzoor, Laurine Choisez, Dierk Raabe, Isnaldi R. Souza Filho   +8 more
wiley   +1 more source

Bearings use dry self-lubricating cage materials [PDF]

, 1968
Rolling element bearings in spacecraft mechanical systems use solid lubricant composites of polytetrafluoroethylene in the bearing cage which functions as the lubricant reservoir. The cage spaces the rolling elements equally and provides the lubricant at
Anderson, W. J., Glenn, D. C., Scribbe, H. W.   +2 more
core   +1 more source