the causes and effects of noise pollution essay

Ngày tải lên: 18/02/2014, 04:20

... FVV conceived of the study, participated in its design and coordination, and wrote this manuscript. All authors have read and approved the final manuscript. Competing interests The authors declare that they ... 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) ... metastasis by 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...

Ngày tải lên: 18/06/2014, 19:20

... Control and Effects of Air 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 ... Manager Office sec IV The higher value of TSPM and PM 10 at Manager Office sec IV may be contributed by the presence of main transport road and other industries nearby. The 24-hr average of TSPM ... particles reach the alveoli of the lung (Peavey et. al, 1985). These air pollutants reduce air Monitoring, Control and Effects of Air Pollution 10 With the help of FDM, TSPM concentration...

Ngày tải lên: 19/06/2014, 14:20

... deposition and dispersion of particles. Of the various sources of TSPM pollution, line sources contribute more than other sources because of their lengths and nature of mining operations. Among the ... emissions and were applied uniformly over the whole model domain. “S2” and “Sh” indicate double and half the SO 2 emission of the CNTRL run, and “NH2” and “NHh” indicates double and half the NH 3 ... C nssS/N5 and P gHNO3 , analysis on the basis of the D N5/S6 /C N5/S6 ratio is not applicable. Because of the abundance of cations of sea- salt origin, the correlation coefficient between P gHNO3 and...

Ngày tải lên: 19/06/2014, 14:20

... to fix the output voltage to the half of the input voltage because of the change the resistance of the sensor with the change of temperature. V C is the input voltage and V RL is the output ... 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) greenhouse ... balance) and dry synthetic air. The resistance of the sensor was calculated as: 1 C sL RL V RR V ⎛⎞ =− ⎜⎟ ⎜⎟ ⎝⎠ (3) where R s is the resistance of the sensor, R L is the resistance of the...

Ngày tải lên: 19/06/2014, 14:20

... of people from the office and the accumulated effect of ventilation to counter the CO2 accumulation inside the office. The smooth CO2 concentrations inside the office during the weekend (13-14 ... pneumonia or edema of the lungs [9]. Considering these, the allowed concentrations of formaldehyde in Korea, Denmark, the Netherlands, and Germany are only 2 ppm, 0.2 ppm, 0.1 ppm, and 0.1 ppm, respectively ... particles in the sample before entering the measurement cell. On the top, the MOTOR drives the rotation of gas filter wheel, which is illuminated with the broadband IR sources (more details of the operational...

Ngày tải lên: 19/06/2014, 14:20

... Penang Island is an island of 293 square kilometres located in the Straits of Malacca and “Seberang Perai” is a narrow hinterland of 753 square kilometres (Tan, et al., 2010). The island and the ... values at the top of atmospheric is the sum of the surface reflectance and atmospheric relfectance. The signals measured in each of these visible bands represent a combination of surface and atmospheric ... images of the Earth’s surface in the solar spectrum. So, the signal observed by the satellite sensor is the sum of the effects from the ground and atmosphere. Surface reflectance is a key to the...

Ngày tải lên: 19/06/2014, 14:20

... reduce the excessive influence of the species with mass. The statistic software SPSS v.12 for windows was used to obtain the number of factors, the mass matrix and the Varimax Rotation. The selection ... B. J. and J. James N. Pitts (2000). Chemistry of the Upper and Lower Atmosphere, Academic press. Monitoring, Control and Effects of Air Pollution 110 often used to redistribute the variance ... challenge to plan and govern, having as one of their priorities the reduction of air pollution with the aim to protect the health’s population, providing at the same time infrastructure and services....

Ngày tải lên: 19/06/2014, 14:20

... displays the average of the statistical parameters of the model in the PM 2.5 source reconciliation in the four sites. In general, the parameters of R 2 , Chi 2 and percentage of mass were in the ... near as possible. The quality of the data will depend on the number of taken samples, used devices, the place and time of the sampling. Equation 4 is the fundamental base of the receptor model, ... Monitoring, Control and Effects of Air Pollution 130 To date, the information regarding the formations of UFP and FP during photocopying is still limited. The mechanism of UFP and FP formation...

Ngày tải lên: 19/06/2014, 14:20

... from the contaminated sheet could readily reach the torso and the breathing zone of a person sitting next to the letter. Further, extensive contamination of the table and person’s body below the ... shows the air velocity profile (velocity vectors and color-coded velocity range zones) in the vertical middle cross section of the NEWC. Deflection of the air by the table toward the manikin and ... as the HVAC system’s air inlet and outlet and were connected to the recirculating air moving unit positioned on the roof of the EWC. The air mover speed could be controlled by a variac, and the...

Ngày tải lên: 19/06/2014, 14:20

... concentration of the solute at the junction of the sampling and the diffusion column x=l’ or z=0 of Fig. 2, for different values of the time variable. The sampling equation predicts the sample peaks theoretically ... Control and Effects of Air Pollution 158 from the faỗade of St. Giuseppe Church in Syracuse (Sicily). The IR-spectra of these samples showed the presence of degradation products composed of calcium ... objects and places. If in a sense culture is the evolution of human life in space and time, the “monuments- remnants” of the human creation of all the times form the prints, the signs, the evidences,...

Ngày tải lên: 19/06/2014, 14:20

... comprehensive understanding of the causes of decay and the factors controlling them. In order to estimate the impacts of air pollution on the various solid surfaces, including them of cultural heritage, ... deposition to the surface in the presence of moisture, followed by the dissolution of Calcite and the precipitation of Gypsum. The black color of gypsum crusts is the result of the accumulation of particulate ... 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...

Ngày tải lên: 19/06/2014, 14:20

... decree of the Minister of Interior was issued: a. To link between the issuance of the licenses of the Vehicles and its emissions testing, and the start of the implementation of this decree in the ... plain. The City is limited at the Norwest by the Gulf of México and at the South, Southeast and Southwest by a group of softened hills. Under these conditions, the natural expansion of the city ... to combat the emissions of Carbon monoxide and Hydrocarbons. c. The cooperation between the Ministry of Environment and the Ministry of Interior has resulted in the establishment of the environment...

Ngày tải lên: 19/06/2014, 14:20

... financed by the Government of State of Campeche and the Council of Science and Technology of México. Also thanks to Centro INAH-Campeche for their giving facilities to the development of the project. ... located in the historic center of the city of San Francisco de Campeche, and the building of the CICORR in the main campus of Autonomous University of Campeche. The level of total suspended particles ... fact. On the other hand, in spite of the low levels of atmospheric pollutants observed in the City, the presence of gypsum (Fort San Pedro) and bassanite (Fort San Carlos), is an indicator of a...

Ngày tải lên: 19/06/2014, 14:20

Ngày tải lên: 19/06/2014, 14:20

Ngày tải lên: 19/06/2014, 14:20

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Ngày tải lên: 11/08/2014, 16:22