Zhejiang Gongshang University

About: Zhejiang Gongshang University is a education organization based out in Hangzhou, China. It is known for research contribution in the topics: Adsorption & Supply chain. The organization has 8258 authors who have published 7670 publications receiving 90296 citations. The organization is also known as: Zhèjiāng Gōngshāng Dàxué.

Chemical approaches for the enhancement of porphyrin skeleton-based photodynamic therapy.

Abstract: With the development of photodynamic therapy (PDT), remarkable studies have been conducted to generate photosensitisers (PSs), especially porphyrin PSs. A variety of chemical modifications of the porphyrin skeleton have been introduced to improve cellular delivery, stability, and selectivity for cancerous tissues. This review aims to highlight the developments in porphyrin-based structural modifications, with a specific emphasis on the role of PDT in anticancer treatment and the design of PSs to achieve a synergistic effect on multiple targets.

The Role of Requirements Engineering Practices in Agile Development: An Empirical Study

Abstract: Requirements Engineering (RE) plays a fundamental role in all sorts of software development processes Recently, agile software development has been growing in popularity However, in contrast to the extensive research of RE in traditional software development, the role of RE in agile development has not yet been studied in depth In this paper, we present a survey with three research questions to explore the treatment of RE in the practical agile development by investigating eight agile groups from four software development organizations To answer the three research questions, we targeted at 108 participants with rich agile experiences and designed a questionnaire to collect their answers Our survey shows that agile RE practices play a crucial role in agile development and they are an important prerequisite for projects’ success though many agile methods advocate coding without waiting for formal requirements and design specifications

Enhancement on the permeation performance of polyimide mixed matrix membranes by incorporation of graphene oxide with different oxidation degrees

Abstract: Graphene oxide (GO) with different oxidation degrees were synthesized by harsh oxidation of graphite using the improved Hummers method. The GO/polyimide (PI) mixed matrix membrane was successfully fabricated by in situ polymerization of PI monomers (3,3′,4,4′-biphenyltetracarboxylic dianhydride and 4,4′-diaminodiphenyl ether) with GO. The structure of GO was characterized by Fourier transform infrared, transmission electron microscopy, atomic force microscopy, X-ray diffraction, and thermal gravimetric analysis–differential thermal analysis. The performance of different GO/PI mixed matrix membranes was evaluated by permeation experiments of CO2/N2 gas mixture (volume ratio, 1:9). Results showed that more polar functional groups were introduced to GO with the increase in oxidation degree of GO in the preparation process, producing fewer layers and more translucent structures. GO with higher oxidation degree has significant effect on its dispersion in the N,N-dimethylacetamide solvent and polymer matrix materials. The permeability of GO/PI hybrid membranes for CO2 and N2 increased. The CO2/N2 permeation selectivity of membranes exhibited a trend of initial increase, followed by a decrease, with the increase in oxidation degree, when the same amount of GO was added. For GO with the same oxidation degree, the permeability and permeation selectivity of hybrid membrane initially increased, and then decreased with the addition content of GO. In the case of hybrid membrane containing 1 wt% monolayer GO, the maximum permeability and permeation selectivity of hybrid membranes for CO2 were 14.3 and 4.2 times more than that of PI membrane without GO, respectively. Copyright © 2015 John Wiley & Sons, Ltd.