نتایج جستجو برای: photochemical smog
تعداد نتایج: 11421 فیلتر نتایج به سال:
Currently, people worldwide, in the period from September to April, observe with their own eyes and feel pollution of air, called smog, breath. The biggest cause smog source air is burning rubbish stoves. Other causes include exhaust fumes large factories, coal furnaces, car fumes. Smog an unnatural phenomenon, directly related human activity. weather becoming worse. On no-wind, foggy days, phe...
A new perspective on how to manipulate molecules by means of very strong laser pulses is emerging with insights from the so-called light-induced potentials, which are the adiabatic potential energy surfaces of molecules severely distorted by the effect of the strong field. Different effects appear depending on how the laser frequency is tuned, to a certain electronic transition, creating light-...
We report the synthesis of altitudinal molecular motors that contain functional groups in their rotor part. In an approach to achieve dynamic control over the properties of solid surfaces, a hydrophobic perfluorobutyl chain and a relatively hydrophilic cyano group were introduced to the rotor part of the motors. Molecular motors were attached to quartz surfaces by using interfacial 1,3-dipolar ...
In January 1985 a smog period occurred for 5 days in parts of West Germany, including the Rhur District. Mortality (24,000 death certificates), morbidity in hospitals (13,000 hospital admissions, 5400 outpatients, 1500 ambulance transports) and consultations in doctors' offices (1,250,000 contacts) were studied for a 6-week period including the smog episode and a time interval before and therea...
Energy carriers are addressed today as one of the main pillars of energy generation due to the increased growth of industries in developed and developing countries. According to the global view, increased consumption of energy carriers is causing an increase in the production of greenhouse gases, the global average temperature, and this, in turn, results in the quicker melting of ice in Antarct...
It is argued that photochemical processes, driven by ultraviolet starlight, could lead to large deuterium fractionation for H2O and CH4 relative to H2 in the primitive solar nebula. Implications for deuterium enrichment observed in planetary atmospheres are briefly discussed.
Weak electromagnetic radiation removes structurally important calcium (and possibly magnesium) ions from cell membranes, making them weaker and more prone to transient pore formation. This makes them leaky to even large molecules. Prolonged exposure to mobile phone radiation causes serious damage to the DNA in living cells, probably because of digestive enzymes leaking from lysosomes. This may ...
In order to evaluate the effects of both cold and light stresses on chlorophyll fluorescence and feasibility of using chlorophyll florescence technique to evaluate effect of light intensity on cold tolerance in soybean, an experiment was done in a factorial arrangement based on a completely randomized design with three replicates. Two soybean cultivars consisted of 032 and BP grown under greenh...
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