نتایج جستجو برای: water absorption and swelling

تعداد نتایج: 16952760  

Journal: :journal of agricultural science and technology 2010
h. zare-hosseinabadi m. faezipour a. jahan-latibari a. enayati

medium density fiberboard (mdf) was produced using moist depithed bagasse stored dry or wet. the duration of storage for either method varied between 0 to 4 months. two steaming temperatures of 175c and 185c were also used. mdf boards were produced in the laboratory and the common mechanical and physical properties were measured and compared. results showed that an increased steaming temperat...

2013
Valdir Soldi

In this study the viability of using guar gum to form films was investigated along with the effectiveness of the cross-linking process employing 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) as the cross-linking agent. In addition, the cross-linked films were evaluated considering the water absorption, thermal stability and mechanical properties. The cross-linking process o...

2014
Lanxing Du Yanjun Li Sunyoung Lee Qinglin Wu

To modify water absorption properties of bamboo fiber (BF) and high density polyethylene (HDPE) composites, heat treatment of BFs was performed prior to compounding them with HDPE to form the composites. The moisture sorption property of the composites was measured and their diffusion coefficients (Dm) were evaluated using a one-dimensional diffusion model. Moisture diffusion coefficient values...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1389

abstract: since sugar consumption is directly related to diabetes and other illnesses such as obesity, the issue that will most heavily dominate the health food market is blood sugar management and low glycemic foods. using calcium chloride and gums such as sodium alginate and low ester pectin as thikener and a high-potency sweetener aspartame we were able to reduce sugar content of sour cherry...

Journal: :جنگل و فرآورده های چوب 0
فرزانه حیدری دانشگاه علوم کشاورزی و منابع طبیعی ساری مریم قربانی دانشگاه کشاورزی ساری، دکتری سید مجید ذبیح زاده دانشگاه علوم کشاورزی و منابع طبیعی ساری

the current research was planned to investigate the effect of maleic anhydride (man) and glycidyl methacrylate (gma) treatments on morphological and physical properties of the hornbeam wood-styrene composite. test samples were divided according to astm d4446-05 to control and treated with man, st, man/st and man /st/gma. treatment was performed by vacuum- pressure method using a experimental cy...

2011
Hamid Reza Taghiyari Ali Karimi

Heat-treatment, a major method of wood modification for improving dimensional stability and natural durability, has been studied considerably in the scientific literature. This study will focus on the effect of heat-treatment on permeability, an important physical property of wood by subjecting beech samples to two different mediums of hot water and steam, as well as in two buffered hot water o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1390

abstract ion selective electrodes (ises) are electrochemical sensors that respond selectivity to the activity of ionic species. an ion-selective electrode is an electrochemical device that uses a thin selective membrane or film as the recognition element, and is an electrochemical half-cell equivalent to other half-cells of the zeroth (inert metal in a redox electrolyte). in common methods o...

Journal: :بوم شناسی کشاورزی 0
حمیدرضا فلاحی مهسا اقحوانی شجری رضا طاهرپور کلانتری محمدقاسم سلطان زاده

introduction reduced availability of water resources in many arid countries including iran, particularly in response to the indiscriminate harvesting of water reservoirs and climate change, has created concerns. therefore, the sustainable use of water resources especially in agriculture is a necessity for these countries. strategies such as deficit irrigation and superabsorbent application are ...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید