Results 51 to 60 of about 580,457 (303)

The Thermal degradation of Bisphenol A Polycarbonate in Air [PDF]

open access: yes, 2005
The thermal degradation of polycarbonate in air was studied as a function of mass loss using TGA/FTIR, GC/MS and LC/MS. In the main degradation region, 480–560 °C, the assigned structures of smaller molecules and linear molecules that evolved in air were
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Natural Bone‐Derived Ceramic Scaffolds Functionalized with Chitosan‐Gold, Chitosan‐Magnesium, and Chitosan‐Zinc for Enhanced Antibacterial Activity

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the development of antibacterial ceramic scaffolds derived from natural bovine bone. The bones were processed through sequential boiling and hydrogen peroxide treatment to remove organic matter, producing porous, mineral‐rich scaffolds.
Mohamad Hassan Taherian   +6 more
wiley   +1 more source

Wear and friction of TiAlN/VN coatings against Al2O3 in air at room and elevated temperatures [PDF]

open access: yes, 2010
TiAlN/VN multilayer coatings exhibit excellent dry sliding wear resistance and low friction coefficient, reported to be associated with the formation of self-lubricating V2O5.
Hovsepian, Papken   +5 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Optimization of Fulvic Acids Production from Oil Palm Empty Fruit Bunches Using Microwave Extractor

open access: yesMenara Perkebunan
Fulvic acid (FA) derives from a non-renewable source, Shilajit, known as highly commercial values for its benefit for human health. Fulvic acid can also be extracted from materials such as coal, lignite, and peat.
Firda Dimawarnita   +8 more
doaj   +1 more source

Isolation of Flavonoid Compounds from Amyl Alcohol Fraction of Golek Mango Leaf (Mangifera indica L cv. Golek)

open access: yesJurnal Kimia Sains dan Aplikasi, 2019
Mango plant (Mangifera indica L.) is a tropical fruit plant with high nutrition in the Anacardiaceae family. One of the several varieties of mango plants spread throughout Indonesia, namely mango golek.
Maulina Dwi Haryani   +2 more
doaj   +1 more source

Validation and data characteristics of methane and nitrous oxide profiles observed by MIPAS and processed with Version 4.61 algorithm [PDF]

open access: yes, 2007
The ENVISAT validation programme for the atmospheric instruments MIPAS, SCIAMACHY and GOMOS is based on a number of balloon-borne, aircraft, satellite and ground-based correlative measurements.
Bianchini, G.   +37 more
core   +2 more sources

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

open access: yesAdvanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng   +7 more
wiley   +1 more source

Rapid synthesis of Silver Nanoparticles with Rheum ribes L Fruit Peels: Anticancer and Antimicrobial Effects with Biocompatible Structures

open access: yesJournal of Agricultural Sciences
Silver nanoparticles (AgNPs) are substances with a wide range of uses. Utilizing extracts obtained from the peels of Rheum ribes L. (Rr) fruit growing in Erzurum region, silver nanoparticles were rapidly created in this study with a quick, easy, and ...
Duygu Neval Sayın İpek   +2 more
doaj   +1 more source

Molecular Structures and Spectral Properties of Natural Indigo and Indirubin: Experimental and DFT Studies

open access: yesMolecules, 2019
This paper presents a comparative study on natural indigo and indirubin in terms of molecular structures and spectral properties by using both computational and experimental methods.
Zixin Ju, Jie Sun, Yanping Liu
doaj   +1 more source

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