Results 51 to 60 of about 149,991 (265)

OXIDATION KINETICS AND QUANTIFICATION METHOD OF CHOLESTEROL USING CHOLESTEROL OXIDASE ENZYME CATALYST

Indonesian Journal of Chemistry, 2010
In view of health, cholesterol is believed as one of many sources can raise several diseases. Hence, both of research in quantification and developing simple, rapid and accurate analysis method of cholesterol in a sample is very important.
Iip Izul Falah, Ritmaleni Ritmaleni, M. Utoro Yahya   +2 more
doaj   +1 more source

Oxidation kinetic behavior and microstructure mechanism of GH3536 alloy fabricated by laser powder bed fusion

npj Materials Degradation, 2023
This study comprehensively investigates the oxidation kinetics of laser powder bed fusion (LPBF) processed GH3536 superalloy at 950 °C. The oxidation kinetics and oxide film microstructure characteristics are analyzed and the underlying mechanism is ...
S. L. Min, H. W. Zhang, H. Liu, L. H. He, S. Y. Qiu, F. Z. Chu, S. S. Huang, Y. Q. Wang, K. Zhang, J. J. Liang, J. Hou   +10 more
doaj   +1 more source

Hyperosmotic stress‐induced redistribution of pre‐mRNA cleavage factor I subunits is associated with shifts in alternative polyadenylation

FEBS Open Bio, EarlyView.
Hyperosmotic stress triggers the relocation of the CFIm complex from the nucleus to the cytoplasm. This shift creates a nuclear ‘stoichiometric bottleneck’, limiting CFIm availability for mRNA processing. Consequently, specific mRNAs like NUDT21 and DICER1 undergo targeted 3′UTR shortening, demonstrating how spatial protein dynamics drive rapid ...
Hitomi Soumiya, Masatake Osawa, Hidefumi Fukumitsu   +2 more
wiley   +1 more source

High-temperature oxidation of oxide-dispersion-strengthened FeCrAl alloys: Influences of Al, Co and Y concentration on the mechanism of oxide scale growth

Journal of Materials Research and Technology
Oxide-dispersion-strengthened (ODS) FeCrAl alloys with different Al and Co contents were oxidized at 800 °C in air, and the oxidation behavior was investigated.
Shenghua Zhang, Shigenari Hayashi, Shigeharu Ukai   +2 more
doaj   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

Antioxidant activity of acerola extracts

Czech Journal of Food Sciences, 2004
West Indian cherries or acerola fruits (Malpighia glabra L.) are very rich in ascorbic acid, and also contain flavonoids and anthocyanins. Therefore, their antioxidant activity is interesting.
I. Nagamine, H. Sakurai, H. T. T. Nguyen, M. Miyahara, J. Parkányiová, Z. Réblová, J. Pokorný   +6 more
doaj   +1 more source

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

Advanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe, Tuba Yener, Suayb Cagri Yener, Mourad Keddam, Cuma Bindal   +4 more
wiley   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Determining kinetics of H2O2 evolution from photoelectrochemical water oxidation

Nature Communications
Photoelectrochemical water oxidation to generate H2O2 is a clean and promising method. Its performance is strongly dependent on electrolyte species, in which the Faradaic efficiency is considerably promoted by HCO3 − anion. The kinetic mechanism is under
Dongfeng Li, Ruifang Wei, Deyun Zhang, Chenwei Ni, Heng Yin, Lingcong Zhang, Fengtao Fan, Xiuli Wang, Can Li   +8 more
doaj   +1 more source