Results 11 to 20 of about 1,529 (109)

A Hybrid Photo/Biocatalytic System for the Sustainable Synthesis of L-Alanine From Urea and Pyruvate. [PDF]

ChemSusChem
We present a visible‐light driven photo‐biocatalytic system combining urease (URE), L‐alanine dehydrogenase (AlDH) and visible‐light driven nicotinamide adenine dinucleotide (NADH) regeneration system consisting of triethanolamine (TEOA), zinc meso‐tetra(4‐sulfonatophenyl)porphyrin tetrasodium salt (ZnTPPS4‐) and [Cp*Rh(bpy)(H2O)]2+.
Yamada K, Amao Y.
europepmc   +2 more sources

Toward the Bioremediation of Nylon Waste Materials: Genome Mining Leads to the Identification of a Thermostable Laurolactamase From Thermopolyspora flexuosa. [PDF]

ChemSusChem
To enhance nylon waste remediation, genome mining was used to identify a thermostable laurolactam hydrolase from Thermopolyspora flexuosa with activity against an important cyclic nylon derivative. Substrate scope analysis and structural modeling revealed key features controlling enzyme‐substrate compatibility, providing a promising foundation for ...
Cleveland ME, Bunyat-Zada AR, Hoffman ER, Howe GW.   +3 more
europepmc   +2 more sources

Continuous absorbable suture versus interrupted permanent suture in the treatment of diastasis of the rectus abdominis muscle [PDF]

Revista Brasileira de Cirurgia Plástica, 2016
INTRODUCTION: Plication of the rectus abdominis muscle is an important step in remodeling the abdomen in abdominoplasties. It can be performed using several types of threads with interrupted or continuous sutures, according to the surgeon's preferences ...
Leandro Fuchs, Daniele Walter Duarte, Vanessa Gaissler   +2 more
doaj   +1 more source

Oxidative Lactamization of Amino Alcohols: An Overview [PDF]

Journal of Chemistry Letters, 2020
Lactams are essential functional groups in a number of pharmacologically and biologically active compounds. They are widely found in many natural products, marketed drugs, as well as in the base of polymeric structures (e.g., polyamides/Nylons).
Lakashima Sreerama, Esmail Vessally, Farnaz Behmagham   +2 more
doaj   +1 more source

Nonmetal clasp dentures: What is the evidence about their use?

The Journal of Indian Prosthodontic Society, 2020
The aim was to discuss the indications, contraindications, advantages, and disadvantages of Nonmetal clasp dentures (NMCDs), as well as the most relevant properties of its constituent materials.
Inti Mendoza-Carrasco, Juliana Hotta, Carolina Yoshi Campos Sugio, Andréa Lemos Falcao Procópio, Vanessa Migliorini Urban, Victor Mosquim, Gerson Aparecido Foratori-Junior, Simone Soares, Karin Hermana Neppelenbroek   +8 more
doaj   +1 more source

The electrospinning of less common polyamides via direct and alternating current

eXPRESS Polymer Letters, 2023
This paper presents a method for direct and alternating current electrospinning of polymeric solutions of three less common polyamides (nylons). Homopolyamide PA 8, heteropolyamide PA 6|9 and semi-aromatic amide (phthalamide) PA 6(3)T were dissolved in ...
Pavel Holec, Radek Jirkovec, Tomáš Kalous, Václava Benešová, Jiří Brožek, Jiří Chvojka   +5 more
doaj   +1 more source

Chemical Upcycling of Nitrile Butadiene Rubbers to Polyamines and Polyols by Chemoselective Catalytic Hydrogenation

Angewandte Chemie, EarlyView.
We demonstrate here the transformation of NBR (Nitrile butadiene rubber) including post‐consumer waste sourced from nitrile gloves and o‐rings into polyamines and polyols via ruthenium catalyzed hydrogenation. ABSTRACT We report here two new approaches for the chemical recycling/upcycling of nitrile butadiene rubber (NBR) to make either polyamines or ...
Alejandra Sophia Lozano Perez, Raymundo Marcial‐Hernandez, Harini Sampathkumar, Oluchi Emenike, Ketan Pancholi, Claire N. Brodie, Daniel M. Dawson, Amit Kumar   +7 more
wiley   +2 more sources

Recent Progress in Adipic Acid Synthesis Over Heterogeneous Catalysts

Frontiers in Chemistry, 2020
Adipic acid is one of the most important feedstocks for producing resins, nylons, lubricants, plasticizers. Current industrial petrochemical process, producing adipic acid from KA oil, catalyzed by nitric acid, has a serious pollution to the environment,
Wenjuan Yan, Guangyu Zhang, Jinyao Wang, Mengyuan Liu, Yu Sun, Ziqi Zhou, Wenxiang Zhang, Shuxia Zhang, Xiaoqiang Xu, Jian Shen, Xin Jin   +10 more
doaj   +1 more source

Evaluation of polyamide surgical mesh as an abdominal ventral implant in rabbits [PDF]

Acta Cirúrgica Brasileira, 2018
Purpose: To evaluate abdominal ventral wound healing by using a specific biomaterial, a handmade polyamide surgical mesh. Methods: A surgical incisional defect was made in ten rabbits to simulate a hernia in the ventral abdominal musculature.
Renata Gebara Sampaio Dória, Silvio Henrique de Freitas, Yumi de Barcelos Hayasaka, Maria Cristina Ferrarini Nunes Soares Hage, Ricardo de Francisco Strefezzi, Adriano Bonfin Carregaro, Gustavo Morandini Reginato, Carlos Eduardo Ambrósio, Alois Foltran Müller   +8 more
doaj   +1 more source

Aplicaciones de los métodos computacionales al estudio de la estructura y propiedades de polímeros [PDF]

Polímeros, 2003
En este trabajo se revisan las técnicas de simulación molecular más habituales y potentes para la descripción de los polímeros a escala atómica y molecular, las cuales se han clasificado en cuánticas o clásicas dependiendo de cómo se describen las ...
Carlos Alemán, Sebastián Muñoz-Guerra
doaj   +1 more source