hydrogels are introduced to modem medicine as novel materials suitable for a variety ofbiomedical applications. studying hydrogels as novel biomaterials has become a fast-developingand exciting research field during the last two decades. these interesting biomaterials have found awide range of application including contact lenses, vehicles for drug delivery and scaffold in tissueengineering and...

Women who report use of postpartum family planning may not continue their initial method or use it consistently. Understanding the patterns of method uptake, discontinuation, and switching among women after delivery is important to promote uptake and continuation of effective methods of contraception. This is a secondary analysis of 634 Malawian women enrolled into a prospective cohort study af...

Mechanical and thermal modelling of the first normally-closed Parylene valve operating on electrothermal principles for rapid and wireless drug delivery was investigated. The modelling and experimental results confirm the mechanical robustness of the valve membrane. Valve opening behavior obtained by transient thermal finite element analysis are in accordance with the experimental microscopic i...

Multirate multicast is an effective method for video distribution to a set of heterogeneous receivers. In this article we present a comprehensive survey on multirate video multicast over the best effort Internet. We first review the key techniques in video encoding and network transport, and describe the representative approaches. We then study various trade-offs based on some important design ...

Background and aims: Complaints of obstetrics and gynecology specialist are on the top of complaint from doctors and these have been increasing with increased population and births. In this regard, parallel to industrialization of life, tendency to cesarean against vaginal delivery has been increased in patients. All the cases of complaint increased from 1995 until 2010. In mul...