در این پژوهش، تأثیر سطوح مختلف مخمر ساکارومیسس سرویسیه و موننسین در جیره­های با کنسانتره بالا بر فراسنجه­های تخمیر شکمبه با روش تولید گاز و تجزیه‌پذیری پروتئین به روش کیسه­های نایلونیبررسی شد. تیمارهای آزمایشی شامل جیره شاهد (75 درصد کنسانتره و 25 درصد یونجه)، و مکمل نم...

The purpose of this study was to compare the properties of wheat straw (Zagros sp) collected in Golestan province NSSC pulp under alkaline pretreatment with 1% sodium hydroxide and boiling pretreatment. Wheat Straw pretreatment with 1% sodium hydroxide and hot water at ...

One of the most common and practical methods in controlling the local scour around bridge pier is to place a protective riprap layer. Due to various uncertainties in the design of this countermeasure method, in the present study, the reliability analysis method was appl...

Abstract : In this study, the possibility of using Cicer arietinum straw residues for manufacturing three-layer particleboards was studied.The amounts of Cicer arietinum straw in mixture with industrial particles were ( % 25:75),(% 40:60),(% 55:45) respectively.Urea for...

This study was investigated the effect of Trametes versicolor on chemimechanical pulp (CMP) delignification. CMP were obtained from Mazanderan wood and paper industries. Circle mats were made from CMP (diameter, 7cm; thickness, 1mm) and fortified with 1g/Lit yeast juice...

Judas tree (Cercis siliquastrum L.) is a suitable species for improving the soil nitrogen fixation and creating the natural landscape in parks and roadsides. This study was aimed to investigate the growth, development and drought resistance of Cercis seedlings by applyi...

Enzymatic activation of lignin on pinewood TMP (Thermo-Mechanical Pulp) fibers for MDF production was investigated using electronic microscopic technique. Two systems: laccase mediator and laccase without mediator were used. MDF was made with laccase as biological catal...

The purpose of this study was to model biomass with soil parameters in Hir-Neur rangelands of Ardabil Province. Initially, considering the vegetation types and different classes of environmental factors, at the maximum vegetative growth stage, using one square meter plo...

در این پژوهش، اثر نسبت علوفه به کنسانتره بر عملکرد رشد، قابلیت هضم مواد مغذی و فراسنجه‌های شکمبه­ای بره­های نر نژاد لری-بختیاری در ماه­های مختلف دوره پروار بررسی شد. به این منظور، تعداد 27 رأس بره نر (سن 15±70 روز، میانگین وزن زنده 3/3 ± 3/26 کیلوگرم) به مدت سه ماه با س...

Taxus baccata is an indigenous and valuable species of Hyrcanian Forests. According to recent studies, the presence of this species in the areas where distribution is declining; therefore, preserving and restoring this valuable species is essential. One of the most stra...