نتایج جستجو برای: polyvinyl pyrrolidone

تعداد نتایج: 9072  

Journal: :Materials Letters 2021

• Exploring the role of surfactants on nanoscale metal oxide synthesis. A nonionic surfactant (Polyvinyl pyrrolidone) based TiO 2 effectively wrap CdSe. Cationic and anionic deform CdSe host or result in agglomerated 2. CdSe/TiO composite results 8 times enhancement H production than Benchmarking shell coated exhibits 23.1 h −1 .g cat hydrogen gas. The present work demonstrates effect cationic,...

Journal: :Ceramics International 2023

There is a growing interest in zirconia ceramics due to their high flexural strength, excellent corrosion resistance and good biocompatibility. The assembly of advanced material with functions sensing, actuation controlling solve the problems that may arise during its use critical ensure long-term service performance. Within this context, objective work analyse structural health samples by scre...

Journal: :Ceramics International 2021

This paper demonstrates, for the first time, synthesis of uniform and crystalline WO3 mesoporous fibers with a diameter ?1 ?m via centrifugal spinning. was achieved by using stable aqueous precursor solution based on ammonium metatungstate (AMT, (NH4)6H2W12O40·xH2O)) polyvinyl pyrrolidone (PVP, (C6H9NO)n). Annealing at 300 °C 1 h followed an additional annealing 500 6 conducted to obtain fibers...

Journal: :Indian Journal of Pharmaceutical Education and Research 2022

Abstract: Objectives: The intention of present study is to formulate and optimize the famotidine mucoadhesive tablets y using Central Composite Design. Materials Methods: concentrations Cordia dichotoma fruit mucilage powder (X1) Polyvinyl pyrrolidone (X2) were demonstrated as independent variables. Whereas, dependent variables selected such an in vitro Mucoadhesion Time percentage Drug Release...

2016
Jingwei Zhang Emily Kao George Wang Edward E.K. Baidoo Matthew Chen Jay. D. Keasling

2-Pyrrolidone is a valuable bulk chemical with myriad applications as a solvent, polymer precursor and active pharmaceutical intermediate. A novel 2-pyrrolidone synthase, ORF27, from Streptomyces aizunensis was identified to catalyze the ring closing dehydration of γ-aminobutyrate. ORF27's tendency to aggregate was resolved by expression at low temperature and fusion to the maltose binding prot...

Journal: :Crystals 2022

Bi2Te3 has an extensive application as thermoelectric materials. Here, large scale single-crystal hexagonal nanoplates(NPs) with size of 0.4–0.8 μm were synthesized successfully by hydro-thermal method. X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission (TEM) used to characterize the nanoplates, which confirm single crystal quality smooth surface morphology size. We d...

Journal: :Engineering and technology journal 2021

This paper presents a synthesis of silver nanoparticles-based solution which was then used as conductive ink for inkjet printing application. In this work, colloidal nanoparticles (AgNPs) were synthesized from nitrate (AgNO3) with polyvinyl pyrrolidone (PVP) capping agent and ethylene glycol (EG) solvent reducing agent. After the synthesis, nanoparticle characterized by Ultraviolet-visible (UV-...

Journal: :Zygote 2009
G Z Mingoti V S D Caiado Castro S C Méo L S S Barretto J M Garcia

SummaryAiming to improve in vitro production of bovine embryos and to obtain supplements to replace serum for in vitro maturation (IVM), this study evaluated the effects of macromolecular supplementation of IMV medium (bovine serum albumin - BSA, polyvinyl alcohol - PVA, polyvinyl pyrrolidone - PVP, Ficoll, KnockoutSR, or fetal calf serum - FCS) and oxygen tension [5% CO2 in air (20% O2) or 5% ...

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