منابع مشابه
Wood Char Depth: Interpretation in Fire Investigations
INTRODUCTION Wood char depth patterns have been considered important by fire investigators in most countries where significant use is made of wood as a construction material. This is natural, since post-fire patterns found on wood members are generally more pronounced and extensive than those found on many other construction materials. But the present state of affairs has been such that there i...
متن کاملFormation of Dioxin during Smoldering of CCA Treated Wood Char
Production of dioxin during the smoldering of wood char containing chromated copper arsenate (CCA) was investigated. Preliminary results are presented for the smoldering of treated wood char at 300 and 400°C, as a function of char loading, smoldering time and inlet oxygen concentrations. PCDF (mainly Cl4DF) were the preferred products of smoldering, and the results indicate the dependence of PC...
متن کاملIonic Liquid Pretreatment and Enzymatic Hydrolysis of Wood Biomass
Pretreatment of lignocellulosic biomass materials from poplar, acacia, oak, and fir with different ionic liquids (ILs) containing 1-alkyl-3-methyl-imidazolium cations and various anions has been carried out. The dissolved cellulose from biomass was precipitated by adding anti-solvents into the solution and vigorous stirring. Commercial cellulases Celluclast 1.5L and Accelerase 1000 have been us...
متن کاملapplication and construction of carbon paste modified electrodes developed for determination of metal ions in some real samples
ساخت الکترودهاِی اصلاح شده ِیکِی از چالشهاِی همِیشگِی در دانش شیمِی بوِیژه شیمِی تجزیه مِی باشد ،که با در نظر گرفتن سادگِی ساخت، کاربردی بودن و ارزان بودن روش مِی توان به باارزش بودن چنِین سنسورهاِی پِی برد.آنچه که در ادامه آورده شده به ساخت و کاربرد الکترودهاِی اصلاح شده با استفاده از نانو ذرات در اندازه گِیرِی ولتامترِی آهن وکادمِیم اشاره دارد. کار اول اختصاص دارد به ساخت الکترود خمِیر کربن اصلاح شده با لِیگاند داِ...
15 صفحه اولEffect of Ultrasound Pretreatment on Wood Prior to Vacuum Drying♠
The influence of ultrasonic pretreatment prior to vacuum drying of Chinese fir specimens was examined in this work. In the pretreatments, wood samples were immerged in a distilled water bath and were treated using two wave frequencies for four different elapsed times to investigate effects of ultrasonic frequency and treatment duration. Then the wood samples were vacuum-dried at 80°C and absolu...
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ژورنال
عنوان ژورنال: Radiocarbon
سال: 1963
ISSN: 0033-8222,1945-5755
DOI: 10.1017/s0033822200036948