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The role of electrical

Xem 1-20 trên 62 kết quả The role of electrical
  • In this paper, we examine an extended model of the determinants of electricity consumption to include the effect of technological innovation represented by the number of patent and trademark registered. The study focused on 35 African countries from 2009 to 2018 based on availability of records on patent and trademark registration.

    pdf9p kethamoi7 15-08-2020 5 0   Download

  • Cell suspension of Panax ginseng was cultivated in bioreactor under different concentrations of ethylene. The synthesis of saponin was greatly reduced in all the ethylene concentrations compared to control. The cell fresh (320 g/L) and dry weight (12.5 g/L) were increased at 10 ppm ethylene concentration at the experiment end. However, at higher ethylene concentration (20 ppm) the fresh and dry weight decreased significantly when compared with control.

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  • A solid polymer electrolyte system based on poly(vinyl alcohol) (PVA) and poly(3,4-Etylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) complexed with magnesium bromide (MgBr2) salt was prepared using solution cast technique. The ionic conductivity is observed to increase with increasing MgBr2 concentration. The maximum conductivity was found to be 9.89 • 106 S/cm for optimum polymer composite film (30 wt.% MgBr2) at room temperature. The increase in the conductivity is attributed to the increase in the number of ions as the salt concentration is increased.

    pdf7p trinhthamhodang1 16-11-2019 5 0   Download

  • In this study, we use MIXOPTIM, a Monte-Carlo simulator of the behavior of a mix of power sources on a territory, to evaluate the performance of the present EU power mix. After a validation on the French mix, we applied it to the whole EU territory and made variational calculations around the present mix to evaluate the performance impacts induced by small changes in installed renewable power and nuclear power.

    pdf5p christabelhuynh 30-05-2020 0 0   Download

  • Trigeneration. The combination of gas engines with absorption chillers is an optimal solution for generating air conditioning and/or refrigeration. The waste heat from the mixture intercooler, the engin oil, the engine cooling water, and the exhaust gas serves as drive energy for the chillers. Combining a cogeneration plant unit with an absorption refrigeration system allows utilization of seasonal excess heat for cooling.

    pdf127p loixinloi 08-05-2013 66 5   Download

  • part 1 book “therapeutic modalities in rehabilitation” has contents: the basic science of therapeutic modalities, using therapeutic modalities to affect the healing process, the role of therapeutic modalities in wound healing, managing pain with therapeutic modalities, basic principles of electricity and electrical stimulating currents,… and other contents.

    pdf735p tieu_vu13 06-08-2018 10 0   Download

  • This change has been manifested in the human capital and the natural, financial, material and social capitals. So we can see the important role of the Program 135 to the development of Mường people's livelihood here, especially of the process of investment in the system of electricity, roads, schools, and medical stations, creating conditions for investment in production.

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  • Draught animals are major source of motive power for majority of farmers. In India bullocks, buffaloes, camels, horses, mules and donkeys are common draught animals. These animals perform different field operations and are also used for rural transportation. In Indian agriculture, bullock farming operations are being carried out by small and marginal farmers and bullock power play an important role in many works. The availability of electric power in rural areas is a serious problem.

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  • Today, nuclear power produces 11% of the world’s electricity. Nuclear power plants produce virtually no greenhouse gases or air pollutants during their operation. Emissions over their entire life cycle are very low.

    pdf8p christabelhuynh 29-05-2020 1 0   Download

  • Engineering for sustainability is an emerging theme for the twenty-first century, and the need for more environmentally benign electric power systems is a critical part of this new thrust. Renewable energy systems that take advantage of energy sources that won’t diminish over time and are independent of fluctuations in price and availability are playing an ever-increasing role in modern power systems.

    pdf676p nlqkhanh29 19-11-2012 143 47   Download

  • Electrical energy plays an important role in our daily life. It can universally be applied and easily be converted into light, heat or mechanical energy. A general problem, however, is that electrical energy can hardly be stored. Capacitors allow its direct storage, but the quantities are small, compared to the demand of most applications. In general, the storage of electrical energy requires its conversion into another form of energy.

    pdf100p congdat261 08-11-2010 81 17   Download

  • Geo-electrical tomographical software plays a crucial role in geophysical research. However, imported software is expensive and does not provide much customizability, which is essential for more advanced geophysical study. Besides, these programs are unable to exploit the full potential of modern hardware, so the running time is inadequate for large-scale geophysical surveys. It is therefore an essential task to develop domestic software for overcoming all these problems.

    doc60p 01202750693 09-06-2015 43 11   Download

  • Microelectromechanical systems (MEMS) have played an increasingly important role in sensor and actuator applications. And its key contribution is that it has enabled the integration of multi-components (i.e., electronics, mechanics, fluidics and etc) on a single chip and their integration has positive effects upon performance, reliability and cost. Compared to conventional electrostatic, thermal or magnetic actuating schemes, piezoelectric MEMS inkjet has the advantages of lower power consumption, lower voltage operation and relatively larger driving force....

    pdf66p tieulaubau 21-06-2011 51 6   Download

  • Tham khảo sách 'jean - luc lebrun scientific writing a reader and writer’s guide', kỹ thuật - công nghệ, điện - điện tử phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf223p chipmoon 19-07-2012 37 6   Download

  • "The whole of science is nothing more than a refinement of everyday thinking," A. Einstein. However, along with the development of human society, both the weight and the role of different sciences have varied. In the seventeenth and eighteenth centuries mechanics was focused upon, including heavenly mechanics, but in the nineteenth century it is already difficult to establish whether it was physics (and mechanics) that played the leading part, or whether it was chemistry or biology.

    pdf259p chuyenphimbuon 21-07-2012 46 6   Download

  • As a premise to this textbook on Numerical ecology, the authors wish to state their opinion concerning the role of data analysis in ecology. In the above quotation, Goethe cautioned readers against the use of mathematics in the natural sciences. In his opinion, mathematics may obscure, under an often esoteric language, the natural phenomena that scientists are trying to elucidate. Unfortunately, there are many examples in the ecological literature where the use of mathematics unintentionally lent support to Goethe’s thesis.

    pdf870p phoebe75 01-02-2013 43 4   Download

  • Diffuse noxious inhibitory controls (DNIC) can be produced by different types of conditioning stimuli, but the analgesic properties and underlying mechanisms remain unclear. The aim of this study was to differentiate the induction of DNIC analgesia between noxious electrical and inflammatory conditioning stimuli. Methods: First, rats subjected to either a supramaximal electrical stimulation or an injection of high-dose formalin in the hind limb were identified to have pain responses with behavioral evidence and spinal Fos-immunoreactive profiles. Second, suppression of tail-flick...

    pdf13p toshiba23 18-11-2011 37 2   Download

  • This updated edition of Improving Outcomes in Breast Cancer is based on the Manual published by the Department of Health in 1996. Additional material, based on recent reviews of research evidence and discussions by a reconstituted Editorial Group, has been inserted in a larger font size (12 point as opposed to 10 point) so that it can be distinguished from earlier text. In the original guidance references were given at the end of each section, these have been retained in this document. For the updated material footnotes have been used throughout the text to avoid confusion....

    pdf0p taisaokhongthedung 07-01-2013 30 1   Download

  • In this paper, we report the ammonia (NH3) sensing behavior of rGO based sensors functionalized with nano-structured metal: silver (Ag) or platinum (Pt) or gold (Au) in air at room temperature and atmospheric pressure. The gas response is detected by the monitoring changes in electrical resistance of the rGO/metal hybrids due to NH3 gas adsorption. Compared to bare rGO, significantly improved NH3 sensitivity is observed with the addition of nanostructured metals.

    pdf6p hulk1234 01-06-2018 31 0   Download

  • Electrical stimulation and behavioral simulation play an important role in experimental research on animals. Behavioral observations combined with bio-signal collection are the basis for assessing the response of animal bodies through external stimuli such as electrical stimulation, pharmaceuticals.

    pdf10p visumika2711 17-07-2019 1 0   Download

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