نتایج جستجو برای: نرمه mdf

تعداد نتایج: 1127  

2000
Les Groom Laurence Mott Stephen Shaler

Ab&act The structural performance of medium density fiberboard (MDF) is attributable to three primary variables which are: physical and mechanical properties of individual wood fibers; fiber-to-fiber stress transfer; and fiber orientation. These origins of fiber properties and stress transfer can be traced to the fiber generation method wherein fiber orientation is associated with mat formation...

2008
Angelo Pietro Femia Augusto Giannini Marilena Fazi Elena Tarquini Maddalena Salvadori Luca Roncucci Francesco Tonelli Piero Dolara Giovanna Caderni

Aberrant crypt foci (ACF) originally described in rodents treated with colon-specific carcinogens have been identified also in humans at high risk of colon cancer (CRC) and are extensively used as cancer biomarkers. However, studies documenting the heterogeneity of ACF have questioned their precancerous nature. Recently, we described dysplastic foci depleted of mucins (MDF) in the colon of rats...

Mayamma Joseph, S.R. Shreyas

If G = (V, E, σ) is a finite signed graph, a function f : V → {−1, 0, 1} is a minusdominating function (MDF) of G if f(u) +summation over all vertices v∈N(u) of σ(uv)f(v) ≥ 1 for all u ∈ V . In this paper we characterize signed paths and cycles admitting an MDF.

Journal: :Forests 2022

Invasive Acacia species can alter nutrient cycling processes in forest ecosystems, particularly affecting total litterfall production and litter decomposition patterns. This study examined the effects of exotic mangium Willd. on production, concentrations leaf fractions, decomposition, release lowland heath (HF) mixed dipterocarp forests (MDF) Brunei Darussalam, Borneo. Above-ground traps were ...

Journal: :Maderas-ciencia Y Tecnologia 2022

The objective of this study was to develop predictive expressions for estimating the withdrawal force capacity various size beech (Fagus orientalis) dowels from medium density fiberboard (MDF) and particleboard (PB). Furthermore, effects base material type, dowel diameter, penetration adhesive type on were investigated. Polyurethane (PU), polyvinyl acetate based D2, (PVA) adhesives utilized glu...

هدف از این مقاله بررسی ‌ویژگی‌های فیزیکی و مکانیکی چندسازه‌های چوب پر‌کاربرد در بازار ایران قبل و بعد از کهنگی تسریع‌یافته بود. فرایند چند مرحله‌ای کهنگی تسریع‌شده طبق استاندارد ASTM D-1037 انجام‌گرفت‌. نمونه‌های مورد مطالعه از چهار نوع تخته خرده چوب صنعتی و یک نوع تخته فیبر (MDF) که از مواد لیگنوسلولزی چوبی و غیرچوبی ساخته شده بودند از شرکت‌های مختلف تهیه شدند. ویژگی‌های فیزیکی شامل دانسیته‌، ...

Journal: :Frontiers in Materials 2023

The purpose of this research is to investigate the impact moisture content, closing speed, and pressurizing speed hot press on density, uniformity density distribution, properties Medium Density Fiberboard (MDF) products. Moisture content affects plasticity, heat conductivity, hydrolysis reaction fiber appropriate ensures quality board. Excessive can lead defects such as pollution bubbles surfa...

2015
P. Prabhavathy S. Bose

Wireless broadcasting system is of major two types namely push-based and pull-based. Extensible Markup Language (XML) is used to represent any information due to its inherent potential features such as scalable, self-describing, etc. Hence XML is chosen as standard for information dissemination in wireless broadcasting systems. Push based system periodically broadcasts XML data over the wireles...

2006
Steven HALIM Hoong Chuin LAU

While designing working metaheuristics can be straightforward, tuning them to solve the underlying combinatorial optimization problem well can be tricky. Several tuning methods have been proposed but they do not address the new aspect of our proposed classification of the metaheuristic tuning problem: tuning search strategies. We propose a tuning methodology based on Visual Diagnosis and a gene...

2008
Gretchen L. H. Harris Andrew C. Layden Peter B. Stetson

We have used the ACS camera on HST to obtain (V, I) photometry for 57,000 red-giant stars in the halo of the Leo elliptical NGC 3377, an intermediateluminosity elliptical. We use this sample of stars to derive the metallicity distribution function (MDF) for its halo field stars, and comment on its chemical evolution history compared with both larger and smaller E galaxies. Our ACS/WFC field spa...

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