نتایج جستجو برای: grey cotton fibers

تعداد نتایج: 110517  

2015
Doug J. Hinchliffe Noureddine Abidi

The secondary cell wall development of cotton fibers harvested at 18, 20, 24, 28, 32, 36 and 40 days after flowering was examined using attenuated total reflection Fourier transform-infrared (ATR FT-IR) spectroscopy. Spectra of deuterated cotton fibers did not demonstrate significant changes in their O–H stretching band shapes or positions during development. Only a progressive increase in O–H ...

Journal: :Applied microbiology 1972
F J Stutzenberger

Thermomonospora curvata produces cellulases active against both cotton fibers (designated C(1) activity) and carboxymethylcellulose (C(x) activity). In reaction systems employing optimal substrate concentration, pH, and temperature, hydrolysis rates (measured by the release of soluble reducing sugars) were initially linear and decreased on prolonged incubation, although only a small amount of s...

Journal: :Journal of physics 2023

Abstract The article deals with the physical and mechanical aspects of transportation raw cotton in a pneumatic transport system. During collides working surfaces outlets pipelines front body separator at various angles. A theoretical analysis influence angle impact on degree damage to system was performed. Based constructed model interaction use an experimental setup increase speed cotton, see...

Journal: :Nepalese journal of ophthalmology : a biannual peer-reviewed academic journal of the Nepal Ophthalmic Society : NEPJOPH 2016
Rajesh S Joshi

BACKGROUND Cotton is commonly used during ophthalmic surgical procedure. Cotton fibers may get attracted to the instruments due to electrostatic forces and become adhered to the surface. With the introduction of these instruments during the surgical procedure cotton fiber may get entry into the eye. In the literature they have been infrequently reported due to insignificant effect on the ocular...

2014
Yue-Hua Xiao Qian Yan Hui Ding Ming Luo Lei Hou Mi Zhang Dan Yao Hou-Sheng Liu Xin Li Jia Zhao Yan Pei

Brown cotton fiber is the major raw material for colored cotton industry. Previous studies have showed that the brown pigments in cotton fiber belong to proanthocyanidins (PAs). To clarify the details of PA biosynthesis pathway in brown cotton fiber, gene expression profiles in developing brown and white fibers were compared via digital gene expression profiling and qRT-PCR. Compared to white c...

2003
Lidija Fras Karin Stana-Kleinschek Volker Ribitsch Majda Sfiligoj-Smole Tatjana Kreze

Complexometric titration was used to determine the carboxyl group content of a series of oxidatively treated (selective and non-selective oxidation) nature cellulose fibers (cotton). The results were correlated with those obtained from the conventional methylene blue method; both methods show an excellent correlation. The progress of the cellulose fibers oxidation was monitored using viscosimet...

Journal: :Applied microbiology 1969
L J Wilkoff L Westbrook G J Dixon

The persistence of Salmonella typhimurium (V-31) on wool blanket, wool gabardine, cotton sheeting, cotton knit jersey, cotton terry cloth, and cotton wash-and-wear fabrics was studied. Three methods of exposure were employed to contaminate the fabrics: direct contact, aerosol, and a lyophilized mixture of bacteria and dust having a high content of textile fibers. After contamination, the fabric...

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

برداشتن گامی موثر در جهت پیشرفت صنعت نساجی، تحقیق و بررسی در زمینه انسجام تکمیلهای خاص را ضروری می سازد. از آنجا که تا کنون اثر سفیدکنندگی پتاسیم پرمنگنات به عنوان یک اکسنده قوی بر روی پارچه ی پنبه ای خام بررسی نشده است این مهم هدف اصلی تدوین رساله مزبور میباشد. به این منظور تاثیرات ناشی از افزایش غلظت پتاسیم پرمنگنات و اگزالیک اسید، دما و زمان عمل سفیدگری بر روی خواص فیزیکی و شیمیایی کالای پنب...

Journal: :Journal of The Serbian Chemical Society 2023

Waste hemp and flax fibers, cotton cotton/polyester yarns, available in large quantities from the textile industry, were used as cheap effective sorbents for removal of methylene blue wastewater. fibers yarns characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, iodine sorption, water retention, point zero charge, well through determination crystallinity index ...

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