نتایج جستجو برای: fire resistant
تعداد نتایج: 234522 فیلتر نتایج به سال:
Research on the seismic performance of steel structures has led to development improved structures, which minimize structural and non-structural damage can be reused immediately after an earthquake. Moreover, significant advances have been made for predicting response members, connections, systems exposed fire. Nevertheless, research reuse a fire event is limited. A structure designed according...
Background and aims: From the 70s onwards, safety engineering made significant progress in developing techniques and regulations relating to the fire. The first, this methods was considered after happening accidents to prevent similar accidents. But with the advancement of technology, the prediction and prevention of fire in complex industries such as power plant finds Important. This study is...
Studies involving the mechanical properties of high-strength steel (HSS) at elevated temperatures have received considerable attention in recent years. However, current research on HSS high is lacking. As a result, design fire-protective structures with standards not sufficiently conservative or safe. This study investigates effect that ASTM A572 Gr. 50 and 60 steels. Reduction factors for yiel...
Little is known about the bonfire impact on microbial properties in soil. This work aimed to study moderate- high-severity experimental burning (250 °C) compared unburned Cambisol a natural Mediterranean environment (Croatia) selected soil properties. The was sampled immediately and 1, 2, 4, 6 months after fire. fire increased mean weight diameter, water stable aggregates, repellence different ...
temporal and spatial variations of fire behavior can be predicted using one of the semi-physical or empirical models developed over recent years. this article investigates the effect of different fuel moisture conditions on fire spread and behavior in national golestan park in july 2011 using farsite, flammap simulation systems, and previous ignition history. landscape data contains the topogra...
Purpose. To carry out a comprehensive study and evaluation of new varieties potatoes (Solanum tuberosum L.) according to the main economic valuable indicators: yield, resistance diseases content starch dry matter. Methods. The qualification examination potato for suitability distribution in Ukraine (PSP) is carried throughout territory within soil climate zones Forest Steppe Polissia accordance...
Different characterization techniques were used to study the hydrolysis and condensation reaction kinetics of 3-methacryloxypropyltrimethoxysilane (MAPTMS) to obtain open cage silsesquioxane oligomers. The formation of hydrogen bonds, which condition the chemical structures of the resulting products, was identified. Improved thermal and fire resistant behavior of unsaturated polyester (UP) comp...
Wonkyung Kang, Corporate and International Relations Division Sharpening the focus of microscopes Green fixations for a cleaner future Turning the spotlight on drug-resistant tumors It takes a sugar to catch a sugar Finding the sweet spot Conducting how neurons fire Characterizing a toxic offender Pinpointing asthma susceptibility in Japanese adults Chemistry: Crystallizing the switch to hydrog...
the effect of forest roads on the extent and type of fire damage occurred in forests and rangelands of the neka county in mazandaran province was investigated. for this purpose, all fire spots, stand number, percentage and type of injury and damage to tree species, and average diameter at breast height (dbh) were noted with 100% inventory; area and geographic location of access roads were deter...
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