نتایج جستجو برای: alkali treatment

تعداد نتایج: 1408996  

2016

The objective of this study was to evaluate the effect of fiber treatment on both morphological and single fiber tensile strength of empty fruit bunch (EFB). EFB fiber was treated with boiling water, 2% sodium hydroxide (NaOH) and combination both NaOH and boiling water. Fiber morphology was characterized by scanning electron microscopy (SEM). Thermogravimetric analysis (TGA) was further used t...

Journal: :Nucleic acids research 1990
D Bérubé R Gagné

In situ hybridization of human chromosomes appears as one of the most attractive methods of gene mapping since it enables the locus being looked for to be directly visualized. This technique however includes a critical step which is the denaturation of chromosomal DNA by different procedures such as heat, alkali or acid treatment (1). These affect the chromosome structure and decrease the good ...

2012
Chunyan Dai Gaoqin Liu Longbiao Li Yanhui Xiao Xueguang Zhang Peirong Lu

PURPOSE To evaluate the roles of ADP-ribosylation factor (ARF) in alkali-induced corneal neovascularization (CNV). METHODS CNV was induced by alkali injury and compared in ARF1 inhibitor- or vehicle-treated mice 3 weeks after injury. Angiogenic and apoptosis factor expression in corneas after injury was quantified with reverse-transcription PCR. Human retinal endothelial cell apoptosis induce...

2011
Weixin Zhong Hongbo Yu Lili Song Xiaoyu Zhang

Although biological pretreatment has the advantages of being environmentally friendly and having low-energy consumption, it usually requires a relatively long incubation time. In this study, a novel combined pretreatment with white-rot fungus and alkali at near room-temperature for saccharification of corn stalks was investigated to speed up the biological process. Biological pretreatment with ...

Journal: :The Analyst 2001
J Garcia-Guinea V Correcher E Rodriguez-Badiola

High-sensitivity radioluminescence (RL) and thermoluminescence (TL) measurements were carried out on samples of natural leucite (with 2.95% of Na2O) from Campania Vessa (Italy). Samples were annealed to modify the charge compensation through alkali metal self-diffusion and to produce luminescence centres. High-temperature powder diffraction, scanning electron microscopy and chemical analyses we...

2015
Soheir Kamal Ahmed Amel Ali Soliman Sahar M. M. Omar Wafaa Rabee Mohammed

BACKGROUND Alkali-burned corneas can seldom heal properly to restore corneal transparency. Treatment of this severe disorder of the ocular surface remains a challenge. AIM OF THE WORK was to investigate whether systemically transplanted bone marrow mesenchymal stem cells (BM-MSCs) can promote corneal wound healing after alkali burn. MATERIAL AND METHODS Thirty five male New Zealand rabbits ...

Journal: :Investigative ophthalmology & visual science 2011
Miyuki Kubota Shigeto Shimmura Shunsuke Kubota Hideyuki Miyashita Naoko Kato Kousuke Noda Yoko Ozawa Tomohiko Usui Susumu Ishida Kazuo Umezawa Toshihide Kurihara Kazuo Tsubota

PURPOSE To investigate the role of reactive oxygen species (ROS) as the prime initiators of the angiogenic response after alkali injury of the cornea and observe the effects of antioxidants in preventing angiogenesis. METHODS The corneal epithelia of SOD-1-deficient mice or wild-type (WT) mice were removed after application of 0.15 N NaOH to establish the animal model of alkali burn. ROS prod...

Journal: :physical chemistry and electrochemistry 0

in this study, a temperature-dependent of the dispersion coefficients is calculated from equation state.the lennard-jones lj (12-6-3) effective pair potential function and simple thermodynamic argumentwith the input pvt data of liquid metals are used to calculate the dispersion coefficients. the dispersioncoefficients ( , , ) 3 6 12 c c c are found to be a linear function of 1/t1+α , where t is...

Journal: :iranian journal of science and technology (sciences) 2007
a. abbaspour

a simple, rapid and sensitive spectrophotometric method has been proposed for the determinationof vanadium (iv). the method is based on the catalytic effect of v (iv) on the oxidation of alkali blue bypotassium bromate at ph 4. the rate of decrease in the absorbance of alkali blue (at 572 nm) wasproportional to the concentration of v (iv) in the range of 100-6000 ng ml-1. the detection limit wa...

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