We present new results on the related rare K L decay modes K 0 L ! + and K L ! + ee . KTeV has performed the rst direct measurement of the form factor for the \direct emission" component of K L ! + decays, a quantity with rami cations for particular chiral models. In addition, the form factor and direct emission/inner bremsstrahlung branching ratio | also presented here | are important input pa...

The merit of various kinds of carbon nanotubes as field electron emission cathode materials has been studied. The field electron emission characteristics of electrophoretically deposited films of single walled carbon nanotubes, multiwalled carbon nanotubes of diameter between 10 and 20 and .50 nm and carbon nanofibres with diameters between 200 and 600 nm were investigated. Results of the measu...

On axis orphan afterglows are afterglows with no preceding γ-ray emission that arise within the initial GRB jet. This could happen if the GRB and afterglow emission are beamed differently in different wavelengths, as would be the case if the relativistic Lorentz factors varies strongly with angle within GRB jets. We show that the observations of the WFC on BeppoSAX constrain with high certainty...

Wilkinson Microwave Anisotropy Probe (WMAP) data when combined with ancillary data on free–free, synchrotron and dust allow an improved understanding of the spectrum of emission from each of these components. Here we examine the sky variation at intermediate and high latitudes using a cross-correlation technique. In particular, we compare the observed emission in several global partitions of th...

the most important environmental pollutant in steel industry is air pollution due to the process of its products. optimise sitting for this industry, in a great extend will prevent pollutants and emissions. khorasan steel company is located near some populous villages and three rivers. it is necessary to perform an investigation for providing abatement and control of air pollution, in time of p...

Research is ongoing to developways to reduce emissions of greenhouse gases (GHGs) fromagricultural sources. A convenient technique to estimate emissions is to develop emission factors for awide range of management practices. Default emission factors such as those given in the Intergovernmental Panel on Climate Change Tier I methodology are often used but these can result in substantial errors w...

a r t i c l e i n f o JEL classification: D58 Q48 Q54 Keywords: Emission trading Climate mitigation policy CGE model Technological assumptions This study quantified the effectiveness of emission trading by considering multiple technological constraints, burden sharing schemes, and climate stabilization targets. We used a global computable general equilibrium model, and evaluated the effectivene...

Unlike exhaust emissions, non-exhaust traffic emissions are completely unregulated and in addition, there are large uncertainties in the non-exhaust emission factors required to estimate the emissions of these aerosols. This study provides the first published results of direct measurements of size resolved emission factors for particles in the size range 0.25–2.5 μm using a new approach to deri...

Plasmonic nanostructures have been extensively used to manipulate the spontaneous light emission rate of molecules and their radiative efficiency. Because molecules near a metallic surface experience a different environment than in free space, their spontaneous radiative emission rate is generally enhanced. Such enhancement, measured by means of the Purcell factor, arises as a consequence of th...

The decoupling elasticity decomposition quantitative model of energy-related carbon emission in Guangdong is established based on the extended Kaya identity and Tapio decoupling model for the first time, to explore the decoupling relationship and its internal mechanism between energy-related carbon emission and economic growth in Guangdong. Main results are as follows. (1) Total production ener...