Several novel composite membranes were prepared to separate and recycle amoxicillin from pharmaceutical wastewater via nanofiltration process. The synthesis of these membranes included three stages: 1- preparation of polysulfone ultrafiltration membranes as a support via phase separation process, 2- modification of its surface by interfacial polymerization as a selective layer (polyamide), and ...

in the present work, b-zsm-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. the tio2- bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. the uniform membrane intermediate layers with low permeation resistance were prepared o...

Providing seamless QoS guarantees for multimedia services is one of the most critical requirements in the mobile Internet. However, the effects of host mobility make it difficult to provide such services. The next steps in signaling (NSIS) was proposed by the IETF as a new signaling protocol, but it fails to address some mobility issues. This paper proposes a new QoS NSIS signaling layer protoc...

Face detection is a vibrant research branch of computer vision. Methods of detecting faces fall into two categories: global and component-based. In this paper, we compare these two approaches by applying a single-layer and a dual-layer support vector machine classifier to detect faces from images. Experiments suggest that the single-layer classifier has better performance on detecting faces wit...

Providing IP services with QoS support in heterogeneous networks involving wired and wireless sec tions has been identi ed as a challenging task The goal of this paper is to show how link level mechanisms can be enhanced by transport layer information in order to meet transport layer reliability and delay requirements within wireless scenarios Error control mechanisms in Layer Layer and a combi...