Results 81 to 90 of about 5,945,109 (224)

A Test Function Method for Weakly Coupled Systems With Derivative‐Type Nonlinearity

Mathematische Nachrichten, EarlyView.
ABSTRACT We consider a two by two system of inequalities which include fractional powers of the Laplace operator, coupled through a semilinear term of derivative type. We prove the nonexistence of global‐in‐time weak solutions for powers below the critical curve and possibly on the critical curve.
Marcello D'Abbicco, Antonio Lagioia
wiley   +1 more source

Optimization of Extraction Process and Neuroprotective Activities of Flavonoids from Mentha haplocalyx Briq. with Subcritical Water

Shipin gongye ke-ji
Objective: To optimize the subcritical water extraction process for flavonoids from Mentha haplocalyx Briq. (mint) and assess the mitigating effects of peppermint flavonoids on H2O2-induced adrenal pheochromocytoma (PC12 cell) injury in rats.
Qingqing ZHANG, Mengjiao ZHANG, Yiming MA, Xueyi CAI   +3 more
doaj   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Extraction of Phytochemical Compounds from Eucheuma cottonii and Gracilaria sp using Supercritical CO2 Followed by Subcritical Water

MATEC Web of Conferences, 2018
Extraction of phytochemical compounds (such as β-carotene, linoleic acids, carrageenan, and polyphenols) from algae Eucheuma cottonii and Gracilaria sp with supercritical CO2 followed by subcritical water has been investigated.
Setyorini Dwi, Aanisah Ridlo, Machmudah Siti, Winardi Sugeng, Wahyudiono, Kanda Hideki, Goto Motonobu   +6 more
doaj   +1 more source

Recent Advances in Microalgae‐Based Functional Coatings and Films for Food Packaging Applications: Opportunities and Challenges

Packaging Technology and Science, EarlyView.
Microalgae‐derived bioactive compounds exhibit strong antioxidant and antimicrobial properties and can be incorporated into edible coatings to enhance food quality and shelf life. These materials offer sustainable, biodegradable alternatives to conventional packaging, with promising potential for future scalable food applications.
Madhu Gaidher, Nidhi Bhardwaj, Sachin Sharma, Akanksha Singh, Kanika Dulta, P. K. Chauhan, Pooja Yadav, Hira Iqbal, Helen Onyeaka, Soumya Ghosh   +9 more
wiley   +1 more source

Refining the timing of Middle Pleistocene (MIS 12 to MIS 6) ice advances into northern central Europe: sedimentological analysis and single‐grain luminescence dating of glaciotectonic complexes and tunnel‐valley fills

Boreas, EarlyView.
We summarize the current state of knowledge on the age of the Middle Pleistocene ice advances into northern central Europe and provide 25 new single‐grain feldspar luminescence ages of Elsterian and Saalian glacigenic sediments to constrain the age of the ice advances and their tentative correlation with marine isotope stages/substages.
Niklas von Soest, Neda Rahimzadeh, Debra Colarossi, Falko Malis, Tobias Lauer, Wera Sander‐Beuermann, Yvonne Spychala, Christian Brandes, Runa Fälber, Sumiko Tsukamoto, Jutta Winsemann   +10 more
wiley   +1 more source

Using Subcritical Water to Obtain Polyphenol-Rich Extracts with Antimicrobial Properties

Antibiotics
The use of green extraction methods that meet the criteria of sustainable and environmentally friendly technologies has been increasing in recent decades due to their many benefits.
Tjaša Žagar, Rok Frlan, Nina Kočevar Glavač   +2 more
doaj   +1 more source

Effectiveness of Periodic Repolishing on the Surface and Mechanical Properties of Resin‐Based CAD/CAM Materials After Different Cycles of Combined Simulated Toothbrushing and Mechanical Cycling

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This study aimed to evaluate the effectiveness of periodic repolishing on the surface and mechanical properties of resin‐based CAD/CAM materials subjected to combined mechanical cycling and simulated toothbrushing, with or without periodic repolishing.
Gabriel Nunes Sampaio, Amanda Martinelli Moretti, Mariana Nogueira Bianchi, Victor Alves Nascimento, Aldiéris Alves Pesqueira   +4 more
wiley   +1 more source

Pilot-scale subcritical water extraction of flavonoids from satsuma mandarin (Citrus unshiu Markovich) peel

, 2020
The effects of operating parameters (extraction temperature, extraction time, material type, solute/solvent ratio, and pressure) on the subcritical water extraction of flavonoids from dried satsuma mandarin peel were studied.
고민정, 정명수
core   +1 more source

Properties of Rice Straw Extract after Subcritical Water Treatment

Bioscience, Biotechnology, and Biochemistry, 2012
Rice straw was separated into four parts: the upper, middle, and lower parts of the stem, and the leaf. They were treated with subcritical water at 140 to 260 °C. The yield, carbohydrate, protein, and phenolic contents were obtained as well as the UV-Vis absorption spectra and the radical scavenging activity of the extracts.
TANGKHAVANICH, Boonnakhom, KOBAYASHI, Takashi, ADACHI, Shuji   +2 more
openaire   +2 more sources