Study of initial alkali charge effects on properties of soda beech pulp by regression models [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2011 In this work effect of initial alkali charge were investigated on the yield and kappa number of soda beech pulp and alkali consumption pattern. The results indicated that, the regression models are useful for studying the relations between yield, kappa ...
Davod Efhami, Mohammad reza Dehghani
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Effect of anthraquinone on NSSC pupling of P.deltoides [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2011 This research was performed to improve the properties of the pulp made of Aspen Deltoides, using antraquinone(AQ) catalizer. Neutral sulfite semichemical (NSSC) method in three efficiency levels of 55, 60, and 65% was applied.
Maryam Rostaei +2 more
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Evaluation of pulp properties produced from rice straw by combination the monoethanolamine and potassium hydroxide [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2015 In this research, rice straw was used as raw material. Potassium hydroxide was combined with monoethanolamine (MEA) as liquor. In another processes NaOH/Na2So3, KOH/K2So3 and KOH 14% was used as references pulp. The results showed that using pure MEA(15%)
Farzaneh Shiralizadeh +2 more
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Pulping and paper making properties of Populus costanzo [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2010 In this Investigation chemical, physical, morphology, pulp and paper making characteristics of Populus costanzo were studied. The average dry and critical specific gravity was found to be 0.39and 0.36 and the fiber morphology including fiber length ,
Abas Fakhryan +3 more
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Investigation the properties of radiata pine (pinus radiata) wood kraft pulp and paper [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2014 In this study, pulp and handsheets characteristics of radiata pine wood kraft pulp was evaluated. The ratiata pine wood was collected from Chamestan Noor Research Station.
Abas Fakhryan
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Investigating the effect of using oxygen delignification process on bagasse soda pulp properties [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2016 In conducting environmentally friendly processes for pulp production, first step is to reduce the effluent pollution load in each stage, and because the bleaching process is the most polluting stage in the production of pulp, improving it is one of the ...
Farhad Zeinaly +3 more
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BioResources, 2022 Hemicelluloses consume alkali during kraft pulping and dissolve in the black liquor as a low energy fuel. Acidic pre-hydrolysis of softwood chips removes hemicelluloses but preserves cellulose content prior to pulping.
Jingqian Chen +4 more
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Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2010 Comparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp.
Somayeh Ghasemi, Ahmad reza Saraeyan
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Pulping characteristics of Populus triplo wood [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2009 In this reseach, chemical, anatomical and pulping properties of 12 years old Populus.triplo of adapting plan and quantity properties of this tree from karaj research station were investigated.The average of fiber length ,diameter ,lumen and thickness of ...
Abbas Fakhryan roghani +5 more
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On kappa-deformation and triangular quasibialgebra structure [PDF]
, 2008 We show that, up to terms of order 1/kappa^5, the kappa-deformed Poincare algebra can be endowed with a triangular quasibialgebra structure. The universal R matrix and coassociator are given explicitly to the first few orders.
Agostini +58 more
core +2 more sources