OBJECTIVE Observe and report seat belt use among children transported in belt-positioning booster seats. DESIGN We conducted a cross-sectional, observational survey of children transported in motor vehicles between 2006 and 2007. While drivers completed a survey reporting the child's age, weight and gender, and the driver's age, gender, race, income, education, and relationship to the child; ...

The transverse vibration frequency of conveyor belts is an important parameter describing the dynamic characteristics a belt conveyor. This most often identified from theoretical relationships, which are derived on basis assumption that stationary elastic string. Belt vibrations have number analogies to other tension member systems, such as, for example, power transmission belts. Some research ...

Permasalahan utama Kelompok Tani Harapan Umat (Koptan Harum) yang memiliki usaha pertanian dan peternakan di Gondangrawe adalah proses pengolahan limbah perkebunan untuk pakan ternak entok masih tradisional. Peralatan digunakan yaitu alu lumpang menumbuk limbah, sedangkan sabit merajang limbah. Dampaknya pembuatan alternatif lama, kapasitas terbatas, rendahnya mutu ternak. Tujuan Kegiatan Progr...

recent studies demonstrate that aluminide coatings are beneficial to wear and erosion resistance and also that oxygen-active elements such as yttrium can remarkably improve this resistance. in this research, the micro-hardness of the aluminide coatings with and without yttrium on 1045 steel was investigated using a micro-mechanical probe. wear of the samples was measured using a pin-on-disk tri...