نتایج جستجو برای: ضایعات mdf

تعداد نتایج: 7483  

2008
Hang Liu Hanho Lee

This paper presents a design and implementation result of a high-speed, low-complexity four data-path 64point radix-2 FFT/IFFT processor for high-throughput MIMO-OFDM wireless LAN system. The proposed FFT/IFFT processor can provide a higher throughput rate and low hardware complexity by using a four-parallel datapath scheme and a multipath delay feed-back (MDF) structure. The proposed four data...

Journal: :Remote Sensing 2014
Phutchard Vicharnakorn Rajendra P. Shrestha Masahiko Nagai Abdul P. Salam Somboon Kiratiprayoon

Savannakhet Province, Lao People’s Democratic Republic (PDR), is a small area that is connected to Thailand, other areas of Lao PDR, and Vietnam via road No. 9. This province has been increasingly affected by carbon dioxide (CO2) emitted from the transport corridors that have been developed across the region. To determine the effect of the CO2 increases caused by deforestation and emissions, th...

2008
Michael A. Beasley Terry Bridges Eric Peng William E. Harris Gretchen L.H. Harris Duncan A. Forbes Glen Mackie

We have performed a spectroscopic study of globular clusters (GCs) in the nearest giant elliptical NGC 5128 using the 2dF facility at the Anglo-Australian telescope. We obtained integrated optical spectra for a total of 254 GCs, 79 of which are newly confirmed on the basis of their radial velocities and spectra. In addition, we obtained an integrated spectrum of the galaxy starlight along the s...

امیر هومن حمصی حبیب الله خادمی اسلام, سعید کاظمی عبدالله نجفی, مهدی فائزی پور

خواص خمشی مواد مرکب ساخته شده از ضایعات مواد لیگنوسلولزی و پلی‌اتیلن ضایعاتی به روش خشک مخلوط/ پرس گرم در این تحقیق مورد مطالعه قرار گرفت. بدین منظور، چهار نوع پرکننده لیگنوسلولزی (خاک اره چوب، خاک سندیگ MDF، خاک اره تخته خرده چوب، پوسته برنج) و پودر پلی‌اتیلن سنگین به صورت خام و ضایعاتی و مخلوط، با نسبت60% وزن پرکننده در مخلوط‌کن دوربالا با هم مخلوط شده و با استفاده از پرس گرم به صورت تخته‌های...

Journal: :Journal of Japan Institute of Light Metals 2022

The effect of multi-directional forging on the development texture and increase hardness was investigated for a commercial A5052 aluminum alloy, which had an initial with major orientation {001}<100>. Two specimens were prepared: one obtained via (MDF) performed four times at true strain 0.18 each forging, while other prepared unidirectional (UDF) time 0.72. MDF UDF same 0.72 exhibited tendenci...

Journal: :Pesquisa Florestal Brasileira 2022

Os pisos com revestimento de madeira são produtos engenheirados, geralmente produzidos lâminas coladas sobre chapa compensado ou painéis reconstituída, os quais possuem larga aceitação no mercado brasileiro. Neste trabalho, objetivou-se desenvolver um piso composto bambu e MDF, uso tratamento termomecânico, determinar as suas propriedades físicas mecânicas em comparação laminado comercial. As a...

Journal: :European Journal of Wood and Wood Products 2021

Abstract Medium density fibreboards (MDF) are currently not recycled after service life, but various publications report on recycling by the disintegration of MDF using techniques and properties obtained recovered fibres (RF). In this study, main aim was to put back RF into manufacturing process as closed-loop repeated thermo-hydrolytic disintegration. Compared previous studies, focus with a re...

در این تحقیق به بررسی و مقایسه مقادیر بارگذاری کششی و فشاری قطری اتصال‏های گوشه‏ای جداشدنی در تخته فیبر دانسیته متوسط (MDF) و تخته‏خرده‏چوب پرداخته شده است. نمونه‏های L شکل به اندازه 20×20 سانتیمتر با 5 تکرار مورد آزمایش قرار گرفتند. در این تحقیق از سه نوع اتصال جداشدنی پرمصرف‏: فلزی پروانه‏ای، ذوزنقه‏ای و پلاستیکی درب‏دار توسط دو نوع پیچ MDF و خودکار برای اتصال استفاده گردید. نتایج مطالعه حاضر...

2016
Pedro S. Moreira Ioannis Sotiropoulos Joana Silva Akihiko Takashima Nuno Sousa Hugo Leite-Almeida Patrício S. Costa

BACKGROUND Cognitive performance is a complex process influenced by multiple factors. Cognitive assessment in experimental animals is often based on longitudinal datasets analyzed using uni- and multi-variate analyses, that do not account for the temporal dimension of cognitive performance and also do not adequately quantify the relative contribution of individual factors onto the overall behav...

2012
Faridah Sh. Ismail Nordin Abu Bakar

Medium Density Fiberboard (MDF) is an engineered wood used in furniture industry as an alternative to solid wood. Bes ides using forest wood and rubber wood as the main source of fiber, oil palm biomass was proven as an excellent substitute. Regardless of any fiber used, identifying its strength level is the main issue. Therefore, prior to releasing processed fiberboards for manufacturing use, ...

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