what are causes and effects of ozone depletion

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Ngày tải lên: 12/08/2014, 23:24

Ngày tải lên: 12/08/2014, 23:24

Ngày tải lên: 17/08/2014, 14:56

Ngày tải lên: 05/09/2013, 09:08

... study this question, we compared the effects of P i analogues (V i ,BeF x ,AlF 4 ), trapping nucleotides at the catalytic site of Pgp, and of ATP depletion, on UIC2- shift and UIC2/MM12.10 competition. ... cells. Coupling of Pgp-mediated drug transport and ATP hydrolysis are generally interpreted in terms of ligand- induced ATPase activation and concomitant transitions between substrate-binding and substrate-releasing ... consecutive application of UIC2 and MM12.10 for the labeling of Pgp + cells, in the absence of modulators. ACKNOWLEDGEMENTS This work was financially supported by OTKA funding T 032563 and the research grant of the...

Ngày tải lên: 08/03/2014, 23:20

... effects of re- moving the laptop or other eArmyU provisions were unknown. These include (1) the willingness and ability of soldiers to participate and (2) the effects of the current program and ... Order of Merit Lists, and how they compared with the normal enrollment pro- cedures, both positively and negatively. We also covered the strengths and weaknesses of the eArmyU implementation and ... possible impact of eArmyU on that soldier’s retention decisions; the impor- tance of a fully funded laptop to the soldier; and the effects of the current and alternative SRR and semester hour...

Ngày tải lên: 17/02/2014, 22:20

... impact of dioxins and furans on the human population and the environment of Guiyu, there is evidence of transport of PCDD/Fs and PBDD/Fs from the WEEE recycling site of Guiyu to the nearby area of ... complexity of composition of electrical and electronic equipment imposes significant and new challenges for recycling. The complex connections between substances are often difficult to break up and separate ... for PentaBDE and OctaBDE (i.e. ΣPentaBDE is the sum of BDE-47, -99 and -100 and ΣOctaBDE corresponds to the sum of BDE-183, -196, -197 and -203) were used. 3.2.1. Air ΣPenta-, ΣOcta-, and DecaBDE...

Ngày tải lên: 23/03/2014, 04:20

... the cellular and molecular effects of those therapies and may permit identification of biomarkers of response. When the trials are performed at multiple centers, transport and storage of clinical ... means and 95% confidence intervals of ratios of cell yield to the control sample (RT ì 24 h) are shown, both before cryopreservation and upon recovery of cells after cryopreservation. P-values are ... blood and cryopreservation of PBMC at off-site locations is expensive and requires oversight and quali ty control of the processing lab at each center. Thus, for many multicenter clinical trials of...

Ngày tải lên: 18/06/2014, 19:20

... inhibiting the secretion and effects of interleukin-18. Journal of Translational Medicine 2011 9:59. Submit your next manuscript to BioMed Central and take full advantage of: ã Convenient online ... for a more complete understanding of its mechanisms of action and ther efo re, for a better assessment of its anti- tumor efficacy. The experimental hepa tic colonization of B16 mela- noma (B16M) ... routes are followed by formation of hepatic metastases, the majority of which are proinflam- matory-cytokine dependent, as shown in IL-1beta- and IL-1 converting enzyme-deficient mice [13], and...

Ngày tải lên: 18/06/2014, 19:20

... technologies are being developed, the new class of these technologies are plasma processes, which are briefly reviewed at the final part of the book. Prof. Andrzej G. Chmielewski Institute of Nuclear ... Pollution 6 the air quality of the area. The measured data of TSPM and PM 10 are shown in Table 2 along with the arithmetic mean and standard deviation (S.D.) of the measured data. Para meter ... al., 2002 and Triantafyllou, 2003). The dispersion of particulate matter follows the annual predominant wind direction of an area (Corti and Senatore, 2000, Baldauf et al., 2001 and Pandey et....

Ngày tải lên: 19/06/2014, 14:20

... distributions of anthropogenic (a and c) and Miyakejima volcanic (b and d) monthly mean surface concentrations of (a and b) SO 2 (ppb) and (c and d) SO 4 2- (μg m -3 ). (e) The gas-phase fraction of ... Control and Effects of Air Pollution 12 4. Conclusions TSPM and PM 10 are the major sources of emission from various opencast coal mining activities. The predicted values of TSPM using FDM are ... coefficients of irreversibly scavenged gases such as HNO 3 and HCl are several times those of their corresponding aerosols (Jylhä, 1999a, 1999b). In-cloud scavenging processes of gases and aerosols are...

Ngày tải lên: 19/06/2014, 14:20

... both emitted directly and formed from other primary pollutants. Causes and effects of air pollution are shown in Fig. 1. Fig. 1. Schematic drawing, causes and effects of air pollution: (1) ... concentrations and depositions of t-NO 3 accurately, accurate estimations of emission inventories of SO 2 and NH 3 and of its precursor NO x are important. Simulated dry deposition velocities and ... atmosphere and gas phase fraction of HNO 3 2. The gas phase fraction of HNO 3 and wet deposition rate of total nitrate 3. A long-range transport indicator and the wet deposition rate of total...

Ngày tải lên: 19/06/2014, 14:20

... the Netherlands, and Germany are only 2 ppm, 0.2 ppm, 0.1 ppm, and 0.1 ppm, respectively [10]. Therefore, gas sensors with excellent reactivity and stability are needed. In view of the above, ... Control and Effects of Air Pollution 58 [66] Z. A. Ansari, S. G. Ansari, T. Ko, and J H. Oh, , Sensors and Actuators B, vol. 87, p. 105, 2002. [67] C T. Wang and M T. Chen, Sensors and Actuators ... Monitoring, Control and Effects of Air Pollution 60 oxides, sulfur dioxide, and suspended particles. Since detailed measurements of carbon dioxides close to anthropogenic areas where carbon...

Ngày tải lên: 19/06/2014, 14:20

... Malacca and “SeberangPerai” is a narrow hinterland of 753 square kilometres (Tan, et al., 2010). The island and the mainland are linked by the 13.5 km long Penang Bridge and ferry. Penang Island ... Island (or “Pulau Pinang” in Malay Language) and a portion of mainland called “SeberangPerai” in Malay Language. Penang Island is an island of 293 square kilometres located in the Straits of ... in Malay Language) and a portion of mainland called “Seberang Perai” in Malay Language. Penang Island is an island of 293 square kilometres located in the Straits of Malacca and “Seberang Perai”...

Ngày tải lên: 19/06/2014, 14:20

... concentrations are expressed as the sum of products of species abundances and source contributions and the equations are solved for the source contributions. Ambient concentrations and source profiles are ... in Jordan, of which 77.5% are registered in the capital, Amman (Department of Driving and Vehicles Licensing 2010). More than 31% of the vehicles in Jordan are diesel-powered. Vans and trucks ... 33°45΄ N and 34°55΄ E - 39°20΄ E. The discovery of oil in the Arabian Peninsula has resulted in fast growth and social and economical development Monitoring, Control and Effects of Air Pollution...

Ngày tải lên: 19/06/2014, 14:20

... Monitoring, Control and Effects of Air Pollution 114 variance and degrees of freedom (ideally chi-square would be zero, but values up to 4 are acceptable). R 2 is the fraction of the variance ... clusters of users in an office suite. Scanning machines and photocopiers are prevalent in office environments (Newburger, 2001). In addition, the use of notebook computers spanning both work and ... printing and copying (Wolkoff et al., 1993). Many studies have investigated the health effects of photocopier toner dust and concluded that siderosilicosis and sarcoidosis-like pulmonary diseases are...

Ngày tải lên: 19/06/2014, 14:20

... Office of Research and Development funded and managed the research described here under Contract EP-D-05-065 with Alion Science and Technology. The views expressed in this paper are those of ... positions of the PIV test areas, namely, a table area and a head area. Monitoring, Control and Effects of Air Pollution 142 Fig. 4a. Cloud of particles (under mid-arm) moving away from ... surface and the table surface. Many particles followed that airflow below the table edge and contaminated lower parts of the manikin’s torso in the process. Monitoring, Control and Effects of...

Ngày tải lên: 19/06/2014, 14:20

... approach of the problem of confrontation of historic buildings and monuments decay because of air pollution presupposes the finding of the relation between “cause and effect”, namely of “how and ... time and place, with man, his surroundings and his history. These unique and unprecedented fingerprints of human civilization form the natural and cultural heritage of a place, of a country, of ... marble of Penteli, (b) L1991 statue of Philippi, (c) L291 statue of Kavala and (d) L351 statue of Kavala. Air Pollution and Cultural Heritage: Searching for “The Relation Between Cause and...

Ngày tải lên: 19/06/2014, 14:20

... fly ashes and soot, including some limestone and marble materials. Fly ashes usually are rich in Si and Al with higher or lower amounts of K, Fe, Ca, Ti and Cl. Combustion of fuel and natural ... atmospheric behavior and method of measurement. The concentration of particles in the atmosphere varies across space and time and as a function of the source of the particles and the transformations ... appeared in mosaic texture, The crystals have irregular faces and highly variable grain size, the cleavage planes of the calcite crystals and the presence of rare and very little amount of opaque...

Ngày tải lên: 19/06/2014, 14:20