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Crystal structure plays an important role in determining chemical and mechanical properties of polymers.Elucidating the crystal structure of polymers is extremely difficult particularly in obtaining a sizeable crystal for XRD analysis.This work prove the viability of computer modelling approach interfaced with simulated XRD diffraction. High-performance aromatic polymers based on the 4,4'-biphenylene, 1,3-phenylene, isophthaloyl bis(4,4'-biphenylene) and p-terphenyl units were synthesized and their crystal structures investigated. The polymers show extreme thermal stability and are insoluble...

Weightlifting is a sport who requires good strength and appropriate technique to make a weightlifter success in its lift. Weightlifting contains two main technique, which snatch and clean-jerk techniques. Both techniques have six phases, and the phases are, first pull; transition from first to second pull; second pull; turnover under the barbell; catching phase; rising from squat position. This book is about the biomechanical analysis on the weightlifting, and the result from the experiment will be compared with other researchers. The experiment is only for preliminary study in this thesis....

The use of herbal medicines during pregnancy from other countries ranges from 7.0% to 55.0%. Although there was no reported study directly linking the use of herbal medicines during pregnancy and perinatal mortality, several studies revealed the adverse effects of herbal medicines to the fetus, which may lead to perinatal death. Currently, there is limited information regarding knowledge, attitudes and herbal medicines practice during pregnancy among Malaysian women as well as its association with perinatal mortality. This book reveals research findings on the prevalence and pattern of herbal...