نتایج جستجو برای: vapor phase polymerization

تعداد نتایج: 657173  

Journal: :Annual review of physical chemistry 2000
M F Jarrold

This article provides a review of recent studies of the properties of unsolvated (and partially solvated) peptides and proteins. The methods used to produce vapor-phase peptide and protein ions are described along with some of the techniques used to study them, such as H/D exchange, blackbody infrared radiative dissociation, and ion mobility measurements. Studies of unsolvated peptides and prot...

2009
J. SCHMIDT A. PENZKOFER

In the vapor phase a solvent-free spectroscopic analysis of dye molecules is applicable [1-3]. For some dye vapors laser action was achieved [1-3]. The dye vapor pressure rises approximately exponentially with temperature. Reasonable vapor pressures (p around 100 Pa = 1 mbar) are obtained for many non-ionic dyes in a temperature region between 200 and 400 °C without considerable thermal decompo...

Journal: :Molecules 2017
Ana Oprisan Yves Garrabos Carole Lecoutre Daniel Beysens

Phase transition is a ubiquitous phenomenon in nature, science and technology. In general, the phase separation from a homogeneous phase depends on the depth of the temperature quench into the two-phase region. Earth's gravity masks the details of phase separation phenomena, which is why experiments were performed under weightlessness. Under such conditions, the pure fluid sulphur hexafluoride ...

Journal: :زمین شناسی اقتصادی 0
علیرضا زراسوندی فاطمه اسدی هوشنگ پورکاسب فرهاد احمدنژاد حسن زمانیان

introduction a wide variety of world-class porphyry cu deposits occur in the urumieh-dohktar magmatic arc (udma) of iran.the arc is composed of calc-alkaline granitoid rocks, and the ore-hosting porphyry intrusions are dominantly granodiorite to quartz-monzonite (zarasvandi et al., 2015). it is believed that faults played an important role in the emplacement of intrusions and subsequentporphyry...

Ahmad Ramazani S.A., Ali Dashti

A new model based on a combination of the polymeric multigrain and multilayer models has been developed to predict the polymerization rate, particle growth, morphology, effective parameters on broadening of the molecular weight distribution, number and weight average of the molecular weight, isotacticity index and bulk density of polymer. Mathematical correlations and the kinetics used in t...

2014
Fan Ren Kar Wei Ng Kun Li Hao Sun Connie J. Chang-Hasnain

Articles you may be interested in High-quality 1.3 m-wavelength GaInAsN/GaAs quantum wells grown by metalorganic vapor phase epitaxy on vicinal substrates Appl. Relaxed, high-quality InP on GaAs by using InGaAs and InGaP graded buffers to avoid phase separation High-detectivity InAs quantum-dot infrared photodetectors grown on InP by metal–organic chemical–vapor deposition Appl. High detectivit...

Journal: :Surfaces 2023

Conductive polymer polypyrrole (PPy)-coated lithium-rich manganese-based Li1.2Mn0.54Ni0.13Co0.13O2 (LMNCO) nanotube cathode materials were synthesized by electrospinning and subsequently subjected to low-temperature vapor-phase polymerization. X-ray diffraction (XRD), scanning electron microscopy (SEM) high-resolution transmission (HRTEM) results confirm that the successful coating of PPy layer...

2001
Hajime HORI Isamu TANAKA

Equilibrated Vapor Concentrations for Bicomponent Organic Solvents: Hajime HORI, et al. Department of Environmental Management I, School of Health Sciences, University of Occupational and Environmental Health, Japan— The equilibrated vapor concentrations for bicomponent organic solvents of toluene–o-xylene, methanol– toluene and methanol–o-xylene mixtures were measured at various compositions. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1384

زئولیت هامودی هستند که به عنوان جاذب تبادلگر و کاتالیزور کاربردهای زیادی دارند. یکی از مهمترین زئولیت ها که به ویژه به عنوان کاتالیزور کاربردهای صنعتی دارد زئولیت zsm-5 می باشد در این پروژه واکنش ایزوپروپیل دار کردن بنزن با 2- پروپانل در شرایط vapor phase بر روی کاتالیست های h3po4-zsm%15 و h-zsm-5 انجام شد و عملکرد این دو کاتالیست برای تهیه کیون که یک ماده حائز اهمیت لز لحاظ صنعتی می باشد، مقای...

ZnO and ZnO: Mn nanocrystals were synthesized via reverse micelle method. The structural properties of nanocrystals were investigated by XRD. The XRD results indicated that the synthesized nanocrystals had a pure wurtzite (hexagonal phase) structure. Resistive gas sensors were fabricated by providing ohmic contacts on the tablet obtained from compressed nanocrystals powder and the installation ...

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