Though learner-centered paradigm of education has long been introduced to pedagogy in general and language teaching in particular, it seems that scant heed has been given to its implementation as well as the restrictions and challenges on its way. In an attempt to shed more light on the status of learner-centered instruction in Iranian language schools, particularly as regards the imped...

The present study was designed to investigate the protective effect of ethanol extracts from Lindera coreana leaves (LCE) on UVB-induced oxidative stress in HaCaT keratinocytes. The HaCaT cells were pretreated with LCE for 24 h and then exposed to UVB (20 mJ/cm2) for 2 h. UVB significantly decreased the cell viability (p

In the past, many have considered the production and use of hydrogen, assuming that it is just another gaseous fuel and can be handled much like natural gas in today’s energy economy. With this study we present an analysis of the energy required to operate an elemental hydrogen economy, with particular reference to road transport. High-grade electricity from renewable or nuclear sources is need...

The cosmological constraining power of modern galaxy cluster catalogs can be improved by obtaining low-scatter mass proxy measurements for even a small fraction of sources. In the context of large upcoming surveys that will reveal the cluster population down to the group scale and out to high redshifts, efficient strategies for obtaining such mass proxies will be valuable. In this work, we use ...

2 Introduction Ever since the introduction of liquid-phase chromatography,1 efforts have been made to increase the speed and resolution of the technology. Undoubtedly, the major breakthrough came with the introduction of high-pressure instruments and the availability of uniform packing materials, leading to the advent of high performance liquid chromatography (HPLC) in the 1970s.2–3 To further ...

Introduction Concerning economic globalization, enterprises must work with the cooperative partner to obtain more profits and overall planning of supply chain has become a new focus for enterprise development. This paper studies joint emission reduction in green low-carbon economy development achieve cost through optimization carbon dispatch. Methods The firstly uses multi-agent model complete ...

As the world’s second largest economy, China ranks among the world’s top nations when it comes to carbon emission. Accordingly, its attitude towards climate change is closely followed by all parties concerned. There have been few studies on the role of environmental governance in the transformation process to low-carbon, especially Chinese ones. This study analyzes the impact of government envi...

The Chief Executive of the Government of Hong Kong Special Administrative Region (HKSAR) has stated in the Policy Address 2008-09 that the Government will promote a low carbon economy in the HKSAR. One of the effective and proven means to achieve this goal is through energy effi ciency enhancement. Incorporation of a district cooling system in the new Kai Tak Development to provide air conditio...