نتایج جستجو برای: tcf bleaching

تعداد نتایج: 8400  

2012
Ahmad Jahan Latibari

The paper industry has taken various steps to address environmental concerns and raw material limitations. Among them, paper recycling has been shown to be a viable option. In this study, the alkaline sulfite pulping of old corrugated containers (OCC) to produce bleachable pulp was investigated. A combination of one of the three active alkali levels (14, 16, and 18%; Na2O, and oven-dry weight o...

 فریدون معماری, ,  ماندانا زنگنه, , جهانگیر رأفت, , زهرا صدیقی, , صنمبر صدیقی, , علی منتظری, , علیرضا موسوی‌جراحی, , محمدعلی محققی, , مریم مستقیمی‌تهرانی, ,

Background: This prospective phase III study was designed to compare the activity of two combinations chemotherapy drugs in advanced gastric adenocarcinoma Methods: In a double blinded clinical trial, From Jan. 2002 to Jan. 2005, ninety patients with advanced gastric adenocarcinoma were randomly assigned to 1) Cisplatin and continuous infusion of 5FU and Epirubicin (ECF), and 2) Cisplatin and ...

Oxygen delignified kraft pulp from eucalyptus (E. urophylla × E. grandis) was catalytically pretreated in aerobic condition using ammonium persulfate in present of catalists like cupric acetate and/or cobalt acetate in acetic acid-water solution, i. e. S2O82--Cu2+, S2O8...

Journal: :Coatings 2023

As transparent heated films (THFs) based on conductive oxides (TCOs) are restricted by expensive raw materials and inappropriate fabricating film curved surfaces because of its brittleness, silver nanowires (AgWS-TCF) is an ideal alternative material for THF. However, there still many problems to be solved in the electrical thermal stability AgNWs-TCF. In this paper, Al-doped ZnO (AZO) nanopart...

2010
Juan José Villaverde Pablo Ligero Alberto de Vega

This paper deals with the chemical treatments with selected organic compounds that have been applied to Miscanthus to upgrade it, for pulp production or fractionation purposes. Organosolv processes have demonstrated their effectiveness as fractionation treatments; therefore special emphasis is placed on these systems and, in particular, those making use of carboxylic acids. That is, Acetosolv p...

Journal: :Bioresource technology 2012
A Requejo A Rodríguez J L Colodette J L Gomide L Jiménez

The aim of the present work was to find a suitable Kraft cooking process for olive tree pruning (OTP), in order to produce pulp of kappa number about 17. The Kraft pulp produced under optimized conditions showed a viscosity of 31.5 mPa·s and good physical, mechanical, and optical properties, which are suitable for paper production. The physical-mechanical and optical properties were measured be...

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