Xem 1-20 trên 26 kết quả Liquid component
  • Room temperature ionic liquids (RTILs) are an interesting and valuable family of compounds. Although they are all salts, their components can vary considerably, including imidazolium, pyridinium, ammonium, phosphonium, thiazolium, and triazolium cations. In general, these cations have been combined with weakly coordinating anions. Common examples include tetrafluoroborate, hexafluorophosphate, triflate, triflimide, and dicyanimide.

    pdf360p cucdai_1 15-10-2012 39 10   Download

  • The Rectisol process uses methanol as wash solvent. The methanol has many benefits, is globally available and is a low-cost washing agent. Furthermore, methanol is chemically and thermally stable and will not change its behavior and structure over a long service life. The Rectisol wash unit operates at temperatures below 0°C. To lower the feed gas temperatures, it is cooled against cold-product streams before entering the absorber tower. At the absorber tower, CO2 and H2S/COS are removed.

    pdf241p namde02 12-03-2013 85 27   Download

  • Introduction: The electrolyte solution is a major component of all battery systems and as such will greatly influence energy densities (thermodynamic properties such as Gibbs energy, enthalpy, and ionic activity) and power densities (nonthermodynamic properties such as viscosity, conductivity, and transference). The electrolyte solution consists of a liquid or solid phase containing at least one component, e.g., water, which is called the solvent, and an ionizable substance, e.g., a salt or an acid, which is called the electrolyte. ...

    pdf6p congdat261 06-12-2010 65 12   Download

  • This manual implements Air Force Policy Directive (AFPD) 32-10, Installations and Facilities, by providing guidance for base and command liquid fuels maintenance (LFM) personnel with guide procedures for field maintenance of permanently installed Air Force-owned, -leased, or -controlled petroleum storage and dispensing systems. It also supplements detailed manufacturers’ instructions on specific equipment and applies to all Air Force systems and activities for which the civil engineer (CE) has maintenance responsibility....

    pdf156p kennybibo 14-07-2012 42 11   Download

  • From previous observations, addition of the antibody raised against the α6-integrin subunit in the GC culture medium impairs cell-spreading on LN substratum and induces the formation of clusters of rounded cells [6]. It can be hypothesized that changes in cell shape might be responsible for all or part of the functional changes observed in survival, proliferation and steroidogenesis of GC.

    pdf23p ut_hai_can 25-12-2012 22 5   Download

  • Bernanke and Gertler (1995) and Mishkin (2007) survey the literature on potential transmission channels between interest rates and the real economy. While their focus is on interest rate changes caused by monetary policy, the same channels would be in place for interest rate changes caused by capital inows. In a neoclassical world the `user cost of capital' is the only transmission channel: lower interest rates on bonds decrease the opportunity costs of buying a house and increase the demand for houses.

    pdf63p taisaovanchuavo 23-01-2013 18 4   Download

  • The term ―luxury‖ is routinely used in our everyday life to refer to products, services or a certain lifestyle, however, often without a clear understanding of the luxury concept as it takes on many different forms for different people and is dependent on the mood and experience of the consumer: ―Luxury is particularly slippery to define. A strong element of human involvement, very limited supply and the recognition of value by others are key components‖ (Cornell 2002, p. 47). The word luxury ―defines beauty; it is art applied to functional items.

    pdf13p nhacchovina 22-03-2013 23 4   Download

  • Tham khảo sách 'introduction to clinical biochemistry interpreting blood results', kỹ thuật - công nghệ, hoá học - dầu khí phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf54p tuanloc_do 04-12-2012 28 2   Download

  • Essential oils (also called volatile oils) generally extracted by distillation from plants are hydrophobic liquids containing volatile aromatic compounds. The essential oils are widely used in perfumes, cosmetics as well as in food and drink as flavor additives. Some essential oils show multiple pharmacological activities and have been considered as the major active fractions of herbal medicines [1–3].

    pdf7p phannguyen05 12-04-2013 27 2   Download

  • This studywas designed to yield data on the supramolecular organization of the phycobilisome apparatus from Synechocystis, and the possible effects of environmental stress on this arrangement. Phycobilisomes were dissociated ina low ionic strength solutionandaquantitative estimation of the protein components present in each subcomplex was obtained using liquid chromatography coupled on-line with a mass spectrometer equipped with an electrospray ion source (ESI-MS).

    pdf9p research12 29-04-2013 15 1   Download

  • A Liqui-Mover pump is a positive displacement pressure powered pump with a minimum of moving parts. The pumping action is accomplished using a positive pressure to push the liquid from the pump tank into the return line. The Liqui-Mover pump can handle high temperature and high pressure condensate without difficulty. Liqui-Mover pumps are available in nine sizes. They are available in many configurations, from individual components that are field assembled to complete packaged systems ready for connection to field piping.

    pdf30p trinhvang 18-01-2013 38 16   Download

  • The most widely used analytical separation technique for the qualitative and quantitative determination of chemical mixtures in solution in the pharmaceutical industry is high-performance liquid chromatography (HPLC). However, conventional detectors used to monitor the separation, such as UV, refractive index, fluorescence, and radioactive detectors, provide limited information on the molecular structure of the components of the mixture. Mass spectrometry (MS) and nuclear magnetic resonance (NMR) are the primary analytical techniques that provide structural information on the analytes.

    pdf36p bigbaby87 03-09-2010 63 15   Download

  • Introduction: The ceramic oxide known as ‘beta alumina’ exhibits remarkably high conductivity of sodium ions and, as a consequence, has been adopted as a key component in batteries that employ liquid sodium as the active material at the negative electrode. Most rechargeable (or ‘secondary’) batteries comprise solid electrodes and a liquid electrolyte. A separator is placed in the electrolyte between the plates to prevent a short circuit.

    pdf19p congdat261 06-12-2010 72 11   Download

  • Adsorption occurs whenever a solid surface is exposed to a gas or liquid: it is defined as the enrichment of material or increase in the density of the fluid in the vicinity of an interface. Under certain conditions, there is an appreciable enhancement in the concentration of a particular component and the overall effect is then dependent on the extent of the interfacial area. For this reason, all industrial adsorbents have large specific surface areas (generally well in excess of 100mZg-I) and are therefore highly porous or composed of very fine particles...

    pdf465p tuyetmuadong2013 06-04-2013 24 10   Download

  • An integrated gasification process was developed for an Ohio-based kraft pulp mill to produce liquid transportation fuels from biomass and coal. Black liquor byproduct from the pulp mill is co-gasified with coal to generate high quality syngas for further synthesis to dimethyl ether (DME) and/or Fischer-Tropsch fuels. A Texaco gasifier was chosen as the focal point for this design. Whenever possible, energy is recovered throughout to generate heat, steam, and power. Mass and energy balances were performed for individual process components and the entire design.

    pdf105p phinzin1 30-07-2013 109 10   Download

  •  IUPAC Definition: chromatography is a physical method of separation in which the components to be separated are distributed between two phases, one of which is stationary while the other moves in a definite direction  Stationary phase (SP): common name for the column packing material in any type of chromatography  Mobile phase (MP): liquid media that continuously flows through the column and carries the analytes  Analyte: the chemical species being investigated (detected and quantitatively measured) by an analytical method...

    pdf19p qdung92ct 03-07-2012 37 9   Download

  • This revision brings the reader completely up to date on the evolving methods associated with increasingly more complex sample types analyzed using high-performance liquid chromatography, or HPLC. The book also incorporates updated discussions of many of the fundamental components of HPLC systems and practical issues associated with the use of this analytical method. This edition includes new or expanded treatments of sample preparation, computer assisted method development, as well as biochemical samples, and chiral separations....

    pdf542p doilan 26-01-2013 32 8   Download

  • Financial development is important for fostering economic growth and stability. This is a feature of the development process that has been extensively documented in the literatures (see Levine). 1 One of key components in this process is capital market development. For example, deepening the long-term local bond market facilitates the reduction of currency and maturity mismatches on corporations’ balance sheets. This also creates alternatives to bank financing that can support efficiency and stability.

    pdf27p hongphuocidol 04-04-2013 32 6   Download

  • A major component of liquidity is adverse selection costs, which are reflected in the bid-ask spread and market impact costs. Firms’ precommitment to the timely disclosure of high- quality financial accounting information reduces investors’ risk of loss from trading with more informed investors, thereby attracting more funds into the capital markets, lowering investors’ liquidity risk (see Diamond and Verrecchia [1991], Botosan [2000], Brennan and Tamarowski [2000], and Leuz and Verrecchia [2000]).

    pdf14p taisaovanchuavo 26-01-2013 20 3   Download

  • Benzene is a colourless, liquid, flammable, aromatic hydrocarbon that is a component of petrol, or may result from incomplete combustion of fuels. Benzene, a natural component of crude oil, is emitted from a range of industrial and combustion sources. The major source of benzene is motor vehicles—both vehicle exhaust (contributing approximately 75% to 80% of emissions) and evaporative emissions (including evaporation losses from motor vehicles and evaporation losses during the handling, distribution and storage of petrol).

    pdf217p saimatkhauroi 01-02-2013 11 3   Download

Đồng bộ tài khoản