نتایج جستجو برای: cellulose

تعداد نتایج: 30032  

2013
Ronald Sabo J. Y. Zhu

One key barrier to converting woody biomass to biofuel through the sugar platform is the low efficiency of enzymatic cellulose saccharification due to the strong recalcitrance of the crystalline cellulose. Significant past research efforts in cellulosic biofuels have focused on overcoming the recalcitrance of lignocelluloses to enhance the saccharification of the recalcitrant cellulose. However...

Journal: :medical laboratory journal 0
zahra khozein islamic azad university, tonekabon branch, tonekabon, iran ayatollah nasrolahi omran faculty of medicine, islamic azad university, tonekabon branch, tonekabon, iran aylar jamali laboratory science research center, golestan university of medical sciences, gorgan, iran

abstract        background and objective: the formation of urinary infection by uropathogenic e.coli needs   numerous virulence factors and biofilm formation is among these factors. bacteria that form biofilms express phenotype traits that appear according to the bacteria type. cellulose is an important compound on the outside of e.coli causing bacterial cell-cell reactions and connection to no...

Journal: :iranian journal of pharmaceutical sciences 0
monzurul amin roni department of pharmaceutical technology, faculty of pharmacy, university of dhaka, dhaka-1000, bangladesh golam kibria department of pharmaceutical technology, faculty of pharmacy, university of dhaka, dhaka-1000, bangladesh reza-ul jalil department of pharmaceutical technology, faculty of pharmacy, university of dhaka, dhaka-1000, bangladesh

extended release formulation of alfuzosin, an a-antagonist used for prostatic hypertrophy, is available in market. it is convenient for older patients to take only one tablet a day. marketed alfuzosin formulation is three layered geomatrix tablet that requires special facilities, high cost, more time and complex operation than normal direct compression formulation. therefore, a less complicated...

Journal: :Biomacromolecules 2011
Gang Cheng Patanjali Varanasi Chenlin Li Hanbin Liu Yuri B Melnichenko Blake A Simmons Michael S Kent Seema Singh

Cellulose is inherently resistant to breakdown, and the native crystalline structure (cellulose I) of cellulose is considered to be one of the major factors limiting its potential in terms of cost-competitive lignocellulosic biofuel production. Here we report the impact of ionic liquid pretreatment on the cellulose crystalline structure in different feedstocks, including microcrystalline cellul...

Journal: :Trends in plant science 2008
Bernard Dumas Arnaud Bottin Elodie Gaulin Marie-Thérèse Esquerré-Tugayé

The cellulose-binding domains (CBDs) in the Phytophthora cellulose-binding elicitor lectin (CBEL) are potent elicitors of plant defence responses. Induction of defence has also been reported in various cellulose-deficient mutants of Arabidopsis thaliana. Based on these observations, we propose a model linking cellulose alteration to defence induction. This integrates the fast increase in cytoso...

2015
WEI LIU SHUAI ZHAO LIN LI ZHEN XIANG XIN

The pretreatment is one of the critical steps in influencing the reaction efficiency of cellulose. In this article, several pretreatment methods of microcrystalline cellulose (MCC) are presented: the ultrasonic, sodium hydroxide and 1-butyl3-methylimidazolium chloride ([C4mim]Cl) dissolution treatment, and the reactivity of cellulose to a TEMPO-NaClONaBr oxidation system is investigated. The tr...

2014
Mehmet Isik Haritz Sardon David Mecerreyes

Due to its abundance and a wide range of beneficial physical and chemical properties, cellulose has become very popular in order to produce materials for various applications. This review summarizes the recent advances in the development of new cellulose materials and technologies using ionic liquids. Dissolution of cellulose in ionic liquids has been used to develop new processing technologies...

2012
Vivek Verma Jeffrey M Catchmark Nicole R Brown William O Hancock

Self organization of the kinesin-microtubule system was implemented as a novel template to create percolated nanofiber networks. Asters of microtubule seeds were immobilized on glass surfaces and their growth was recorded over time. The individual aster islands became interconnected as microtubules grew and overlapped, resulting in a highly percolated network. Cellulose nanowhiskers were used t...

Journal: :journal of nanostructures 2012
r. jalajerdi f. gholamian h. shafie a. moraveji d. ghanbari

fe3o4 nanoparticles were synthesizedviaa simple chemical reaction between fecl2.4h2o and fe(no3)3.9h2o under nitrogen atmosphere at room temperature, and then nanoparticles were added to cellulose acetate (ca) polymer. the influence of nanoparticles on the thermal properties of ca polymeric matrix was studied using thermogravimetric analysis (tga). nanostructures were characterized by x-ray dif...

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