Abstract The article proposes an original approach to the protection of forestry machines from overloads when using a friction material made pressed wood. use compressed wood is environmentally important aspect in manufacture materials for safety devices machines. This contributes development green technologies engineering and ensures increase environmental friendliness logging operations. Howe...

Wood and wooden glued products are widely used as building structures in various construction industries that operate within a wide range of atmospheric factors require stability durability. Therefore, the goal was to conduct experimental studies determine adhesive bond window element made wood under influence temperature moisture static fluctuations. In this regard, comprehensive approach appl...

Much is being written about plastics these days---newspapers are full of stories about the plastic menace, governments are up in arms banning polybags around the country, schools and colleges are launching awareness drives to ban plastics. But they are still around. And will be around for times to come. Not only strewn on the roads or choking drains and rivers, but also inside our homes. Over t...

The programme on the Evaluation of the Carcinogenic Risk of Chemicals to Humans has existed since 1971 and involves the preparation and publication of monographs that evaluate individual chemicals and, more recently, carcinogenic risks resulting from exposures to complex mixtures, since it is in this way that human populations are often exposed. Exposures occurring in the wood and leather indus...

Juru River is named as one of polluted river in Malaysia by Department of Environment (DOE) Malaysia up till recent times. The pollution loadings of this river basin come from various point and non-point sources. This study reveals that the water quality of Juru River is very much affected by the industrial activities in this locality area. The principle component analysis (PCA) display that th...

OBJECTIVES Our objective was to measure the impact attenuation performance of five types of loose-fill playground surfaces at a variety of drop heights, material depths, and conditions. METHODS In a laboratory setting, an instrumented head form was dropped on varying depths of loose-fill materials at one foot height increments until critical deceleration values were exceeded. The effects of t...

Natural rubber is produced by a rubber transferase (a cis-prenyltransferase). Rubber transferase uses allylic pyrophosphate to initiate the rubber molecule and isopentenyl pyrophosphate (IPP) to form the polymer. Rubber biosynthesis also requires a divalent metal cation. Understanding how molecular weight is regulated is important because high molecular weight is required for high quality rubbe...

Rubber biosynthesis takes place on the surface of rubber particles. These particles are surrounded by a monolayer membrane in which the rubber transferase is anchored. In order to gain better insight into whether rubber particles from different plant species share common structural characteristics, the micromorphology of rubber particles from Ficus carica, Ficus benghalensis, and Hevea brasilie...

The biosynthesis of rubber is thought to take place on the surface of rubber particles in laticifers, highly specialized cells that are present in more than 40 plant families. The small rubber particle protein (SRPP) has been supposed to be involved in rubber biosynthesis, and recently five SRPPs (TbSRPP1-5) were identified in the rubber-producing dandelion species Taraxacum brevicorniculatum. ...

In the presented work, sulfur concrete and rubber were used for producing functionally graded materials (FGM). The physical and mechanical properties of sulfur concrete and rubber were changed continuously across the thickness. On one side, there was just rubber and, on the other, there was pure sulfur; the properties of each substance were moved to reach another. This kind of material was cons...