General one-loop formulas for decay h→Zγh\rightarrow Z\gamma

Radiative corrections to the $h\rightarrow Z\gamma$ are evaluated in the one-loop approximation. The unitary gauge gauge is used. The analytic result is expressed in terms of the Passarino-Veltman functions. The calculations are applicable for the Standard Model as well for a wide class of its gauge extensions. In particular, the decay width of a charged Higgs boson $H^\pm \rightarrow W^\pm\gamma$ can be derived. The consistence of our formulas and several specific earlier results is shown.Comment: 33 pages, 3 figures, a new section (V) and references were improved in the published versio

Review of Existing Energy Framework for Vietnam

Since introducing a market-orientation to the economy in 1986, Vietnam has made considerable socioeconomic progress. For example, over the period 1986-2007, the GDP of Vietnam has grown at approximately 7 per cent per year which is the highest growth rate in the ASEAN region. In this growth, the countryâs energy sector has played a vital role. This role is likely to deepen in the years to come as Vietnam strives to achieve ever higher economic progress. Such deepening in the role of energy, this paper argues, will heighten concerns about the security of energy supply, increased CO2 emissions and pollution and other social and political challenges. In order to address these challenges, Vietnam has over the last decade, initiated several energy policies underpinned by appropriate legislation â called, âinstitutional frameworkâ, in the context of this paper. A deeper review of this framework suggests that it is typified by a lack of cohesiveness of policy direction and purpose, fragmented institutional structures and responsibilities, and weak public constituency on environmental issues. The existing framework is therefore unlikely to be able to provide a satisfactory redress to the challenges noted above. This paper provides some suggestions to reduce the weaknesses of the existing framework. These include: articulating the significance of the link between energy, economy and environment; developing coherence in institutional purpose and design, and raising public awareness through better communication and education

POLLUTION OF GROUNDWATER BY LEACHATE FROM DONG THANH LANDFILL DISPOSAL SITE

Joint Research on Environmental Science and Technology for the Eart

Optothermotronic effect as an ultrasensitive thermal sensing technology for solid-state electronics

The thermal excitation, regulation, and detection of charge carriers in solid-state electronics have attracted great attention toward high-performance sensing applications but still face major challenges. Manipulating thermal excitation and transport of charge carriers in nanoheterostructures, we report a giant temperature sensing effect in semiconductor nanofilms via optoelectronic coupling, termed optothermotronics. A gradient of charge carriers in the nanofilms under nonuniform light illumination is coupled with an electric tuning current to enhance the performance of the thermal sensing effect. As a proof of concept, we used silicon carbide (SiC) nanofilms that form nanoheterostructures on silicon (Si). The sensing performance based on the thermal excitation of charge carriers in SiC is enhanced by at least 100 times through photon excitation, with a giant temperature coefficient of resistance (TCR) of up to −50%/K. Our findings could be used to substantially enhance the thermal sensing performance of solid-state electronics beyond the present sensing technologies