Xem 1-10 trên 10 kết quả A scientist rises
  • ON that summer day the sky over New York was unflecked by clouds, and the air hung motionless, the waves of heat undisturbed. The city was a vast oven where even the sounds of the coiling traffic in its streets seemed heavy and weary under the press of heat that poured down from above. In Washington Square, the urchins of the neighborhood splashed in the fountain, and the usual midday assortment of mothers, tramps and out-of-works lounged listlessly on the hot park benches. As a bowl, the Square was filled by the torrid sun, and the trees and grass drooped...

    pdf15p transang7 30-01-2013 18 2   Download

  • Global warming is the rising average temperature of Earth's atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century, Earth's average surface temperature has increased by about 0.8 °C, with about two thirds of the increase occurring since 1980. Warming of the climate system is unequivocal, and scientists are more than 90% certain that most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels.

    pdf103p quynhp 21-11-2009 271 110   Download

  • The author in this work endeavours to solve the greatest scientific problem that has puzzled scientists for the past two hundred years. The question has arisen over and over again, since the discovery of universal gravitation by Sir Isaac Newton, as to what is the physical cause of the attraction of gravitation. “Action at a distance” has long ceased to be recognized as a possible phenomenon, although up to the present, the medium and method of gravitational attraction have not yet been discovered.

    pdf443p window1234 02-01-2013 19 2   Download

  • The Chinese scientists say they studied the mountain for one year before announcing their results. However, some researchers are surprised about0 the Chinese results. They say most scientists believe Mount Everest is rising by almost 4 centimeters a year.

    pdf10p kahty209 19-08-2010 42 14   Download

  • An Introduction to Microelectromechanical Systems Engineering The Sandbox: Materials for M E M S devices are made of n-type and p-type bismuth telluride elements, and are used to cool high-performance microprocessors, laser diodes, and infrared sensors. Peltier devices have proven difficult to implement as micromachined thin film structures.

    pdf20p longmontran 14-01-2010 57 12   Download

  • The problem of overweight affects more than 1 in 7 youth ages 6 to 17 (Flegal, et al., 2002; Ogden, et al., 2002). A number of factors contribute to this rising rate of childhood overweight; however, scientists and medical professionals agree that poor diet and lack of physical activity play some of the most important roles in children being overweight (Berkey, et al., 2000; Rowlands, et al., 1999). Sub-optimal levels of physical activity and poor ...

    pdf0p dangsuynghi 15-03-2013 14 4   Download

  • The author in this work endeavours to solve the greatest scientific problem that has puzzled scientists for the past two hundred years. The question has arisen over and over again, since the discovery of universal gravitation by Sir Isaac Newton, as to what is the physical cause of the attraction of gravitation. “Action at a distance” has long ceased to be recognized as a possible phenomenon, although up to the present, the medium and method of gravitational attraction have not yet been discovered.

    pdf475p nguyenhuucanh1212 23-01-2013 20 3   Download

  • We are a group of dedicated material scientists each with 15–25 years of research and development experience in the assembly and interconnect technologies of electronics. Our experience in chemical and mechanical interfacial compatibility between dissimilar materials dates back to the end of the 1980s. Since the early 1990s with the rise of the electronics industry in Finland, we focused our work increasingly into the challenges of materials, assembly technologies and reliability of portable electronics.

    pdf228p namde04 03-05-2013 17 3   Download

  • By studying Darwin’s finches and East African cichlids, scientists can get clues that help them understand much older, much bigger adaptive radiations. One of the biggest was the early rise of animals. This period of animal evolution is sometimes nicknamed “the Cambrian explosion.” Unfortunately, that name gives the impression that all the modern groups of animals popped into existence 540 million years ago at the dawn of the Cambrian period. Animals evolved from protozoans, which left fossils over a bil- lion years before the Cambrian.

    pdf37p machuavo 19-01-2013 12 2   Download

  • The veterinary profession has made major diagnostic and therapeutic advances in the treatment of infectious and degenerative diseases. The incidence of chronic disease and cancer, however, has increased at alarming rates and is diagnosed at younger ages, even in puppies and kittens. Perhaps it is this rising incidence of degenerative diseases that has spawned an insatiable search by professionals, scientists, and animal guardians for alternative therapies.

    pdf894p mnemosyne75 02-02-2013 19 2   Download

Đồng bộ tài khoản