Analysis of the tendency of the homicide rates in Mexico from 2000 to 2010
Given the significant increase in homicidal violence in Mexico in recent years, the purpose was to analyze the levels, trends and the impact of homicide mortality between 2000 and 2010 at national and state level. Mortality statistics for homicide were used calculating standardized mortality rates and years of life lost (YLL) from 15 to 49 years. Between 2000 and 2007 there was a decline in the mortality rates at the national level (10.8 to 8.2 homicides respectively) and AVP (23.95%). But between 2008 and 2010 homicide mortality increased significantly, as reflected in rates (180.23%) and AVP (causing a decrease in temporary life expectancy of 0.17 years). Homicide mortality significantly increased after a steady decline since 2000. This does not imply that violence is a widespread problem across the country, as the study shows that it was concentrated in some states.
La violencia y sus repercusiones en la salud: reflexiones teóricas y magnitud del problema en México
Our understanding of violence gains from perspectives contributed by several different disciplines. The differences among goals and points of view are often reflected in their vocabularies and interfere in to integrate the advances by each of them.Three big disciplines have been studies violence, those are: Social Sciences, Criminal Justice and most rescentlly Public Health this paper present discuss the theoric perspectives by discipline and try to dimensionated the Violence problem measure by Mortality and Morbidity by Intentional Injuries in Mexico.
Experimental study on ground vibration of blasting the boulder with tandem shaped charging warhead
Hazardous effects of blasting the boulder with the new breaking-blasting equipment-tandem shaped charging warhead are mainly air shock wave, seismic wave and blast slung shot. Blast-induced ground vibration is one of the inevitable effects and may cause substantial damage to nearby structures. Started from the formation process and mechanism of ground vibration to study the seismic wave, the research attained curve of vibration velocity of monitoring points by TC-4850 and carried out differential and fast Fourier transform analysis of the curve. And the results concluded that blasting vibration with tandem shaped charging warhead mainly comes from prime charge; the attenuation law can be predicted by Sadev’s Formula. Explosion vibration frequency range is 20-150 Hz, while with the increase of distance from the blasting center, blasting vibration intensity attenuates rapidly, vibration duration increases and vibration frequency gradually reduces. Compared with general rock blasting, its attenuation rate of blasting vibration is faster with higher frequency and smaller impact on buildings, but the harm effects should not be ignored for the special application environment.