نتایج جستجو برای: cellulose

تعداد نتایج: 30032  

2010
F. O. Ohwoavworhua T. A. Adelakun

The microcrystalline cellulose is an important ingredient in pharmaceutical, food, cosmetic and other industries. In this study, the microcrystalline cellulose, obtained from the stalk of Sorghum caudatum was evaluated for its physical and tableting characteristics with a view to assessing its usefulness in pharmaceutical tableting. The microcrystalline cellulose, obtained from the stalk of Sor...

2013
Yong Bum Park Christopher M. Lee Bon-Wook Koo Sunkyu Park Daniel J. Cosgrove Seong H. Kim

Sum frequency generation (SFG) vibration spectroscopy can selectively detect crystalline cellulose without spectral interference from cell wall matrix components. Here, we show that the cellulose SFG spectrum is sensitive to cellulose microfibril alignment and packing within the cell wall. SFG intensity at 2,944 cm correlated well with crystalline cellulose contents of various regions of the Ar...

Journal: :Plant physiology 2013
Yong Bum Park Christopher M Lee Bon-Wook Koo Sunkyu Park Daniel J Cosgrove Seong H Kim

Sum frequency generation (SFG) vibration spectroscopy can selectively detect crystalline cellulose without spectral interference from cell wall matrix components. Here, we show that the cellulose SFG spectrum is sensitive to cellulose microfibril alignment and packing within the cell wall. SFG intensity at 2,944 cm(-1) correlated well with crystalline cellulose contents of various regions of th...

Journal: :iranian journal of catalysis 2015
batol zakerinasab mohammad ali nasseri ali allahresani

in the present study, the synthesis of diethylene triamine supported on cellulose biopolymer as a biodegradable solid basic heterogeneous catalyst was suggested. then, the applicability of the synthesized catalyst cellulose bonded n-propyl diethylene triamine (cbpdeta) was tested for the synthesis of oxindole derivatives, an important class of potentially bioactive compounds. a various series o...

Journal: :مجله پژوهش های اکوفیزیولوژی گیاهان زراعی 0

maryam zaheri1, ali gholami1*, habibollah nadian2, ebrahim panahpour1 1- department of soil science, college of agriculture, ahvaz branch, islamic azad university, ahvaz, iran 2- department of soil science, college of agriculture, ramin agriculture university, ahvaz, iran * corresponding author: [email protected] received: 22 may 2015                                                      ...

Journal: :journal of textiles and polymers 0

abstract— in the present study, genetic programming (gp) as a completely different approach in comparison with conventional methods, based on the imitation of natural evolution of living organism is proposed for the prediction of cellulose acetate (ca) polymeric membrane characteristics. the membrane preparation parameters of polymer concentration, additive concentration and coagulation bath te...

2011
Ashutosh Mittal Rui Katahira Michael E Himmel David K Johnson

BACKGROUND In converting biomass to bioethanol, pretreatment is a key step intended to render cellulose more amenable and accessible to cellulase enzymes and thus increase glucose yields. In this study, four cellulose samples with different degrees of polymerization and crystallinity indexes were subjected to aqueous sodium hydroxide and anhydrous liquid ammonia treatments. The effects of the t...

Journal: :جنگل و فرآورده های چوب 0
پژمان رضایتی چرانی استادیار گروه صنایع خمیر و کاغذ، دانشکدة جنگل داری و محیط زیست، دانشگاه صنعتی خاتم الانبیاء بهبهان، بهبهان، ایران محمد رضا دهقانی فیروزآبادی دانشیار گروه صنایع خمیر و کاغذ، دانشکدة صنایع چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

nanofibrillated cellulose fibers were produced from unbleached kraft pulp of kenaf bast fiber. air dried and vacuum filtrated films of cellulose nanofibers were produced and their density and tensile properties were investigated. kenaf bast fiber unbleached kraft pulp has good potential for production of cellulose nanofibers by microfluidizer; so that the use of kenaf bast fiber unbleached kraf...

دودانگه, سمیرا, فخار, مهدی,

Acanthamoeba is a free-living amoeba that is an opportunistic pathogen of humans and animals.  Its prognosis is potentially poor that requires fast diagnosis and successful treatment. There are two phases in its life cycle: an active trophozoite form and the double-walled resistant cyst. This amoebic genus is the causative agent of two severe diseases in humans: Acanthamoeba keratitis (AK) and ...

Background and Objectives: In recent years, use of oleogels as replacers of structured oils has received much attentions due to the health concerns. The objective of the present study was preparation of reinforced ethyl cellulose-based oleogels with adipic acid as replacers of shortening in cakes.  Materials & Methods: First, oleogel samples were prepared using ethyl cellulose (at two various ...

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