Xem 1-20 trên 73 kết quả Regional characteristics
  • Tham khảo sách 'atmospheric aerosols – regional characteristics – chemistry and physics_2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Over the past few decades numerous studies have shown an alarming increase in the concentration of atmospheric particular matter called aerosols resulting from a variety of human activities, ranging from agricultural to combustion of fossil fuels. Besides having serious impacts on the health of all living creatures, these particles can affect planetary radiation budget. Consequences of this change include global temperature shifts and the altering of atmospheric and oceanic circulation patterns.

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  • Phuoc  Hiep  corundum  occurrence  has  been  discovered  recently  in  the  Central  part    of  Vietnam  (Quang  Nam  Province).  Common  protoliths  in  the  region  are  high‐grade  metamorphic  rocks (typically of amphibolite‐granulite facies), such as garnet‐bearing amphibolites, gneisses and  schists, intruded by igneous formations of different composition and age. To date, the rubies and  fancy sapphires have been found in secondary, mostly alluvial deposits.

    pdf7p dem_thanh 22-12-2012 30 4   Download

  • Introduction to LEDs: How LEDs work + some points. Comparison with other sources of light. LED in communication. Blue &White LED technologies. How they are made? Their application? Brief about blue laser? Stands for light emitting diode. Semiconductor device: p-n junction forward-biased.current emits incoherent narrow spectrum light (due to recombination in transition region near the junction.) Color of the emitted light depends on the chemical of the semiconducting material used. (Near-ultraviolet, visible or infrared.)...

    ppt52p lehieukutek 26-12-2009 178 132   Download

  • Groundwater is an important resource that serves as a backbone of human development. In several regions, mostly in developing countries, groundwater from sedimentary and hard rock aquifers used for drinking is naturally contaminated with arsenic. In different countries in Asia such as India, Bangladesh, Cambodia, China, Nepal, Pakistan, Taiwan, Thailand and Vietnam, the situation of arsenic toxicity is alarming and severe health problems are reported amongst the inhabitants relying on groundwater as sources of water for drinking purposes....

    pdf299p 951628473 07-05-2012 55 22   Download

  • The most important trend in biological engineering is the dynamic range of scales at which biotechnology is now able to integrate with biological processes. An explosion in micro/nanoscale technology is allowing the manufacture of nanoparticles for drug delivery into cells, miniaturized implantable microsensors for medical diagnostics, and micro-engineered robots for on-board tissue repairs. This book aims to provide an upto- date overview of the recent developments in biological engineering from diverse aspects and various applications in clinical and experimental research....

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  • The Pacific Islands region contains about 200 high islands and about 2 500 low islands and atolls. Apart from the Pitcairn group and the southern part of French Polynesia in the east of the area, all the islands of the area lie in the tropical zone. In general, the islands increase in size from east to west, with Papua New Guinea at the western-most edge of the region having most of the region’s land area. The islands mostly rise steeply from the deep ocean floor and have very little underwater shelf.

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  • The tests described in this document consist of a series of laboratory technical tests and an outdoor functional test of the beacon transmitting to the satellite. Manufacturers are encouraged to conduct preliminary laboratory tests on their beacons, but are cautioned not to radiate signals to the satellite. If open air radiation of 406 MHz signals should be necessary, the manufacturer must coordinate and receive approval for the test from the appropriate national or regional MCC.

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  • Homer, in all probability, knew no rules of rhetoric, and was not tortured with the consideration of grammatical construction, and yet his verse will endure through time. If everybody possessed the genius of Homer, rules and cautions in writing would be unnecessary. To-day all men speak, and most men write, but it is observed that those who most closely follow Homer's method of writing without rules are most unlike Homer in the results. The ancient bard was a law unto himself; we need rules for our guidance.

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  • Encouraged by the friendly acceptance of the first edition and stimulated by numerous requests and comments from the community of meiobenthologists, this second edition updates my monograph on meiobenthology. The revised text emphasizes new discoveries and developments of relevance; it has been extended by adding chapters on meiofauna in areas not covered before, such as the polar regions, mangroves, and hydrothermal vents.

    pdf538p japet75 30-01-2013 14 4   Download

  • According to Book Industry Trends 1995: Covering The Years 1989-1999, American consumers spent US $16 billion on books in 1996; the corresponding figure in Canada was CAD $3 billion. Note that these figures do not include school or college textbooks. Information obtained from B.C. Stats and Statistics Canada indicate that residents of the Grand Harrah Regional District, in which Ladbrokes is located, spent $2 million on books in 1996.

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  • Olive growing in Italy is very important, but there is still a high degree of confusion regarding the genetic identity of olive cultivars. The problem of characterizing the olive tree germplasm is complicated not only by the wealth of its genetic patrimony, but also by the absence of reference standards and a well defined system of nomenclature that is free from homonymy and synonymy. Only recently, some Italian research projects (i.e.

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  • Cement manufacturing is an energy-intensive process due to the high temperatures required in the kilns for clinkerization. The use of alternative fuels to replace conventional fuels, in particular coal, is a widespread practice and can contribute to improving the global warming impact and total environmental footprint of the cement industry.

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  • The first column of Table 2 (Model 1) shows the results of the maximum likelihood estimate of the logistic model applied to the pool of data from over the five year period studied. The model includes a constant forcing a variable to be left out of each block of characteristics to avoid perfect multicollinearity from occurring. The constant determines the PD of the excluded loans11. The characteristics of the excluded loan are: financial credit, in euros, long term (over five years), without collateral, 1993, construction sector and lent by a bank in a certain region.

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  • Ongoing monitoring and good data are the cornerstones of effective efforts to improve water quality. Addressing water quality challenges will mean building capacity and expertise in developing countries and deploying real-time, low-cost, rapid, and reliable field sampling tools, technologies, and data-sharing and management institutions. Resources are needed to build national and regional capacity to collect, manage, and analyze water quality data.

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  • A broad-based transformation of Ontario’s power system is well underway, revolutionizing the way electricity is generated, delivered, managed and even consumed in Ontario. Many of the changes at play are more profound and occurring faster than expected. The increasing investment in new renewable generation is accompanied by the expansion and enhancement of the transmission and distribution systems, the retirement of Ontario’s coal generating fleet, and the development of a ‘smart grid’ for Ontario.

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  • The population exposure without PM10 fraction attributable to road traffic is shown in Figure 6. Compared to total PM10, the frequency distribution changes considerably. Most people would live in areas with PM10 values less than 20 µg/m3. In France and Switzerland, less than 3% of the population would live in areas with PM10 greater than 20 µg/m3. In Austria, this portion is higher due to an increased non-traffic caused regional PM10 background.

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  • Classifying travel behavior and segmentation becomes increasingly more difficult as modern travelers combine pleasure with business, in order to take time and cost advantage. There are therefore endless variations between the two principle classifications of travel activities, i.e. business and leisure trips. However, leisure trips may include elements, characteristics and motivations of business travel and vice versa. Incentive travelling, extended conference stays and business meetings during leisure travel makes the distinction between the two categories increasingly blurred.

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  • Transportation systems of regional and national extent are composed of networks of interconnected facilities and services. It follows that nearly all transportation projects must be analyzed with due consideration for their position within a modal or intermodal network, and for their impacts on network performance. That is, the network context of a transportation project is usually very important. Thus, it is appropriate to begin a volume on transportation engineering with a chapter on national transportation networks....

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  • MicroRNAs (miRNAs) have been proven to play important roles at the post-transcriptional level in animals and plants. To investigate clustering patterns and specific sequence characteristics in the flanking regions of plant miRNA genes, we performed genome-wide analyses ofArabidopsis thaliana, Populus trichocarpa, Oryza sativaand Sorghum bicolor.

    pdf12p cosis54 05-01-2013 21 2   Download

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