نتایج جستجو برای: csf and then standard handsheets (60gm

تعداد نتایج: 16869704  

Journal: :جنگل و فرآورده های چوب 0
حمیدرضا مهری ایرائی کارشناس ارشد صنایع خمیر و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران علی قاسمیان دانشیار گروه صنایع خمیر و کاغذ، دانشکدۀ مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران حسین رسالتی استاد گروه صنایع چوب و کاغذ، دانشکدۀ مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران احمدرضا سرائیان دانشیار گروه صنایع خمیر و کاغذ، دانشکدۀ مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران ایمان اکبرپور دانشجوی دکتری صنایع خمیر و کاغذ، دانشکدۀ مهندسی چوب و کاغذ، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان، ایران

in the present research, the effect of different peroxide charges and reaction times were investigated inhydrogen peroxide bleaching of mixed old newsprint and old magazine deinked pulp. in thebeginning, mixed recycled papers were pulped using conventional method and then deinked byflotation. in addition, deinked pulps (mixture ratio of 70% onp and 30% omg) were bleached withhydrogen peroxide a...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0

mixed office waste dip produced at latif paper company was used as reinforcement pulp to substitute part of imported long fiber pulp in white poplar apmp furnish produced at maraghe paper company. each pulp was separately refined to about 250 csf and then, handsheets were made applying 0(control sample), 5, 10, 15, 20 and 25 percent dip mixed with apmp and lf pulps. the control sample contained...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده ادبیات و علوم انسانی 1387

abstract the present study is concerned with the syntactic deviation in hafezs poetry. poems are known to be accompanied with various linguistic deviations. these deviations may be phonological, morphological and/or syntactic. the relatively high frequency of the cases of the syntactic deviation in hafezs poems makes this rhetorical feature as a main characteristic of his poetry. this thesis, ...

پایان نامه :0 1374

the following question poped up: is there any relationship between iranian high school efl learners reading comprehension and listening comprehension? then the following null hypothesis (ho) was developed to the test the above, mentioned question. "there is no relationship between high school efl learners reading comprehension and listening comprehension. for nearly 16 weeks, the experimental g...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1390

introruction khawf in(iran)-herat and mazaresharif and shirkhan bandar in (afghanistan)-dushanbe in (tajikistan)_(kirgizstan)-kashghar in(china) project railway network is under construction that it is as a significant corridor for revitalizing silk road corridor in the region .at the present there are three different gauge in the region central asia with 1,520 mm gauge and turkey-islamic repu...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - پژوهشکده زبان و گویش 1393

abstract the purpose of this study is twofold: on the one hand, it is intended to see what kind of noticing-the –gap activity (teacher generated vs. learner generated) is more efficient in teaching l2 grammar in classroom language learning. on the other hand, it is an attempt to determine which approach of the noticing-the-gap- activity is more effective in the long- term retention of grammar...

2012
Ruijin Liao Fuzhou Zhang Yuan Yuan Lijun Yang Tuan Liu Chao Tang

SiO2 hollow spheres and low relative permittivity insulation paper handsheets composed of these SiO2 hollow spheres with different weight percentages were successfully prepared. Low-content SiO2 hollow spheres were uniformly dispersed in the insulation paper handsheets. The relative permittivity of the immersed oil Kraft-SiO2 hollow sphere handsheets (K-SiO2) initially decreased and then increa...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و زبانهای خارجی 1390

abstract the present study was conducted to investigate the effectiveness of a rather newly developed method in language teaching that is the use of paragraph reading task and whole reading task and their effects on improving efl learner’s speaking ability. to fulfill the purpose of the study, first 90 participants studying their course at sa eedi high school in tehran were chosen by means of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان - دانشکده علوم انسانی 1393

postcolonial feminism, also dubbed as third world feminism, is an innovative approach, demonstrating the way women of colonized countries suffer from both native patriarchies and imperial ideology. also due to this double-colonization, postcolonial feminists contend that third world women are subjected to both colonial domination of empire and male domination of patriarchy. while western femini...

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