We report the demonstration of CdTe/MgxCd1-xTe double heterostructures (DHs) with a carrier lifetime of 3.6 μs and an interface recommendation velocity of 1.2 cm/s, comparable to or even better than the best values reported for GaAs/Al0.5Ga0.5As (18 cm/s) and GaAs/Ga0.5In0.5P (1.5 cm/s) DHs. Combined with a p-contact layer (8 nm a-SiCy:H + 4 nm a-Si:H), devices consisting of MgxCd1-xTe/CdTe/Mg0...

The terrestrial vegetation emits large amounts of volatile organic compounds (VOC) into the atmosphere, which on oxidation produce secondary organic aerosol (SOA). By acting as cloud condensation nuclei (CCN), SOA influences cloud formation and climate. In a warming climate, changes in environmental factors can cause stresses to plants, inducing changes of the emitted VOC. These can modify part...

This report presents an assessment of VOC emissions from fiberglass boat manufacturing. First, a description of the industry structure is presented. This includes estimates of the number of facilities, their size, and geographic distribution. The fiberglass boat manufacturing process is then described along with the sources and types of VOC emissions. Model plants representative of typical faci...

With the growing concern regarding emission of volatile organic compounds (VOCs) from wastewater treatment plants (WWTPs), the relationship between the VOC emission rates and the associated public health risks has been rarely discussed. The objective of this study was to examine and compare the VOC emission rates and cancer and non-cancer risks by inhalation intake, using a municipal WWTP in Ch...

BACKGROUND The paper describes the origins of the Value of Children (VOC) approach to the cross-cultural research on fertility behavior around the Pacific Rim, and critically discusses its shortcomings at this stage. OBJECTIVE The paper then demonstrates how the approach derives its theoretical coherence from the theory of social production functions, making reference to empirical evidence. RES...

Research over the past ten years has created a more detailed and coherent view of the relation between O 3 and its major anthropogenic precursors, volatile organic compounds (VOC) and oxides of nitrogen (NO x ). This article presents a review of insights derived from photochemical models and field measurements. The ozone—precursor relationship can be understood in terms of a fundamental split i...

[1] The kinetics of ozone (O3) chemistry and its two main precursors, nitrogen oxides (NOx) and volatile organic compounds (VOC), represents an important field of uncertainty in atmospheric chemistry and photochemical modeling. This uncertainty affects the design of control strategies to reduce tropospheric O3 production. The effect of controlling ozone precursors on sensitivity regimes was eva...

There are two main environmental problems in Moldova. Olle problem is a continues overexploitation and degradation of the environment linked to the low incomes of the population, and another problem is a forest dec1inelinked to the effects of air pollution. Thus, there is an urgent need for both the economic growth to improve the low incomes and for the reduction of air pollution to improve hea...

Characteristics of biogenic VOC (Volatile Organic Compounds) as well as methodology of BVOC (Biogenic VOC) emission estimation are presented in this article. It has been shown in previous studies (e.g. Simpson et al, 1995) that contribution of volatile organic compounds (VOC) emitted from biogenic sources to total amount of VOC in the atmosphere can be significant. Especially while modeling pho...