THE INFLUENCE OF HUMAN ACTIVIES ON THE ENVIRONMENT

... The Influence of Human Activity on the Environment Improvements in agriculture health and medicine have produced a dramatic rise in the human population This increase in population size ... sulphur dioxide and other greenhouse gases • carbon dioxide traps heat in the atmosphere and causes the temperature of the earth to rise. • This leads to disruption of the wea...

Ngày tải lên : 28/09/2013, 11:10

23
390
0

Tài liệu The Influence of Human Activity on the Environment ppt

... predators to eat pests instead of pesticides • It does not have harmful effects The Influence of Human Activity on the Environment Develop alternative energy sources • Conserve our rapidly diminishing ... rivers and pollute the water • They may even end up in the food chain In the 1960s, DDT in the food chain threatened bird populations. Many birds of prey came...

Ngày tải lên : 26/01/2014, 10:20

23
690
0

Báo cáo " Assessment of the influence of interpolation techniques on the accuracy of digital elevation model " potx

... higher the weight, the smoother the output surface. For the tension spline, the higher the weight, the coarser the output surface. More detailed information about the spline interpolation can ... location. However, in kriging, the weights are based not only on the distance between the measured points and the prediction location but also on the overall spat...

Ngày tải lên : 05/03/2014, 16:20

8
464
1

Báo cáo y học: "HLA-DR regulation and the influence of GM-CSF on transcription, surface expression and shedding

... expression. Our results support the observations seen in the study of Fumeaux et al. (2002) demonstrating that a modification of HLA-DR, post-translationally, may be one mechanism responsible for the ... less than the level of HLA-DR in the cell lysates (5ul of a 1 in 10 dilution, from 2 x 106 PBMC). The shed HLA-DR therefore seemed to represent a small fraction of the...

Ngày tải lên : 03/11/2012, 09:57

11
618
0

Influence of Phosphorus Concentration on the Biodegradation of Dissolved Organic Matter in Lake Biwa, Japan

... hypotheses for the accumulation of COD Mn in Lake Biwa is the deterioration of bioactivity for DOM degradation. Accordingly, the influence of phosphorus concentration on the biodegradation of DOM was ... of DP, the addition of the filtered secondary effluent did not affect the dependency of oxygen consumption on DP very much. (2) The response-curve of th...

Ngày tải lên : 05/09/2013, 10:17

9
761
2

Báo cáo " Influence of cooling rate on the properties of Fe73.5Si13.5B9Nb3Au1 ribbons " docx

... from inside of the ribbon, so the ribbon is cooled faster. Therefore, the speed of the wheel is proportional to the cooling rate. It means that two concepts the speed of the wheel and the cooling ... beat on the surface of the wheel, it will stretch on that a path before solidification and ejection from that and the higher speed of the wheel, the lon...

Ngày tải lên : 05/03/2014, 14:20

7
522
0

Báo cáo khoa học: "An Empirical Study of the Influence of Argument Conciseness on Argument Effectiveness" docx

... self-report on user’s satisfaction with houses in the Hot List 3 is randomly assigned to one of the three conditions. Then, the subject interacts with the evaluation framework and at the end of the ... questionnaire on the Web. The questionnaire implements a method form decision theory to acquire an AMVF model of the subject’s preferences (Edwards and Bar...

Ngày tải lên : 08/03/2014, 05:20

8
402
0

Báo cáo " Influence of laser parameters on the stationary operation of a two-mode random micro laser " pdf

... Section 3, we give the curves describing the influence of laser parameters on the saturated values of mode intensities and Section 4 devoted to discussion and conclusion. 2. Basic equations ... augments, the transformation of photon densities is inverse (see in Fig 1b). This reveals that the increase of one mode photon density caused in the decrease of the othe...

Ngày tải lên : 14/03/2014, 13:20

4
343
0

Research Gaps and Measurement Challenges for Studying the Influence of New Media on Adolescent Sexual Health docx

... initiation of intercourse. One of the latter studies asked youth to report on the programs they watched and then content-coded these programs to count the number of scenes with sexual content in them. ... change the measure used in this study was thus a “snapshot” of the past but was adequate to answer the question of how television content might influence youth. In...

Ngày tải lên : 30/03/2014, 05:20

13
414
0