نتایج جستجو برای: at 50 tha requires greater rates of carbon dioxide assimilation
تعداد نتایج: 21450799 فیلتر نتایج به سال:
writing as a productive skill requires practice in the basic sub-skills of vocabulary and grammar. in fact, grammar has been viewed as the core of programs in writing classes to help the students put the elements of sentence together and combine sentences of specific lengths to come up with an error-free work of art. conceptualizing l2 writing in this way introduces writing as a product and enc...
Agricultural hillslopes with susceptible loess enters a large amount of runoff and sediment into the Gorgan city annually, due to the inappropriate drainage system which cause a lot of financial losses city. The purpose of this study was to investigate the effect of different vegetation scenarios on the runoff and sediment discharge from three hillslopes of catchment of 5.9 hectares. The r...
one of the applications of nanotechnology is use of carbon nanotubes for the targeted delivery of drug molecules. to demonstrate the physical and chemical properties of biomolecules and identify new material of drug properties, the interaction of carbon nanotubes (cnts) with biomolecules is a subject of many investigations. cnts is a synthetic compound with extraordinary mechanical, thermal, el...
The importance of metabolic rate and/or spiracle modulation for saving respiratory water is contentious. One major explanation for gas exchange pattern variation in terrestrial insects is to effect a respiratory water loss (RWL) saving. To test this, we measured the rates of CO2 and H2O release ( and , respectively) in a previously unstudied, mesic cockroach, Aptera fusca, and compared gas exch...
88 estimates of the marginal costs of carbon dioxide emissions were gathered from 22 published studies and combined to form a probability density function. The uncertainty is strongly rightskewed. If all studies are combined, the mode is $5/tC, the mean $104/tC, and the 95 percentile $446/tC. Studies with a lower discount rate have higher estimates and a much greater uncertainties. Similarly, s...
Overview of Issue In the past two years research has pointed towards the possibility of using urban planning as a tool to reduce greenhouse gas emissions in urban areas. For many focused on the issue of climate change, there is a consensus that atmospheric carbon dioxide should be contained at no more than twice the maximum level of atmospheric carbon dioxide that existed during the pre-industr...
Photocatalytic reduction of carbon dioxide to formaldehyde was investigated on four semiconductor photocatalysts (FeS, FeS/FeS2, NiO and TiO2). The reaction was carried out in continues flow of CO2 gas bubbled into the reactor. Semiconductor photocatalysts were characterized by X-Ray diffraction (XRD) and Diffuse Reflectance Spectroscopic (DRS) methods. Sulfide ion was used as hole scavenger. T...
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