Field emission from carbon nanotubes (CNTs) has been known for more than a decade but there is no commercialized product available in the market. Apparently, we need to improve our basics understanding on stable field emission from CNTs. Here we compared the field emission properties of as grown vertically-aligned multi-walled carbon nanotubes (MWCNTs) to two types of modified MWCNTs: 1) Conica...

Diminishing of conventional fuels and hysterical vehicles emission leads to deterioration of the environment, which emphasize the research to work on biofuels. Biofuels from different sources attract the attention of research due to low emission and biodegradability. Emission of carbon monoxide, carbon dioxide and H-C reduced drastically using Biofuels (B-20) combustion. Contrary to the convent...

in this research carbon nanotubes were produced by chemical vapor deposition of acetylene over a mixture of iron and cobalt catalysts supported on nanometric tio2 and the influences of two synthesis parameters: growth temperature and catalyst composition ratio on properties of end-product carbon nanotubes were investigated. the catalytic basis was prepared by wet impregnation method with differ...

Abstract Within the hazard and disaster risk research field, explicitly treating carbon emissions as a remains rather nascent. Applying perspectives to seek new insights on integrated mitigation adaptation approaches policy measures is equally elusive. Since China’s pledge achieve neutrality by 2060, “dual carbon” goals of emission peaking have stimulated nationwide attention, research, policie...

Black carbon (BC) emission factors were measured for a California commuter rail line fleet of diesel-electric passenger locomotives (Caltrain). The emission factors are based on BC and carbon dioxide (CO2) concentrations in the exhaust plumes of passing locomotives, which were measured from pedestrian overpasses using portable analyzers. Each of the 29 locomotives in the fleet was sampled on 4e...

One of the main mechanisms for implementing international Climate Change policies is the establishment of a carbon offset market that allows the transfer of emission reductions between countries. The rationale for this policy instrument, which is recognised in the Kyoto Protocol, is to facilitate global cost efficiency in climate change mitigation through a cost efficient allocation of reductio...

Literature review shows that most economic analyses of climate change have focused on the international cross-section analysis on the impact of mitigation actions. This paper departs in disaggregating the impact by provinces in one country, focusing particularly on industrial structure and income disparities between different provinces in China. With different economic growth, there exists subs...

The electricity sector is a major source of carbon dioxide emissions that contribute to global climate change. Switching from fossil fuels to renewable fuels such as geothermal, biomass or wind would help to reduce carbon emissions from electricity generation. This research analyzes the costs and carbon emission consequences of three policies to promote the use of renewables to generate electri...