preparation of diethyl ether from distilled ethyl alcohol 95 alcohol abs alcohol ever clear with concentrated sulfuric acid or battery acid
preparation of hexagonal wo3 from hexagonal ammonium tungsten bronze for sensing nh3
Ngày tải lên :
20/03/2014, 13:06
... Acknowledgments Fig Sensitivity of h-WO3 to various levels of NH3 at 300 8C of the test, respectively This means the sensor performance is reversible and recoverable, which is important for its application ... [17] The morphology of h-WO3 was investigated by SEM The precursor of h-WO3, i.e HATB was built up by aggregated 50– 100 nm particles (Fig 3a) The annealing of HATB did not affect the morphology ... significant amount of reduced W atoms (see XPS results below) As a consequence the absorption bands were very broad in the Raman spectrum of HATB Fig XRD pattern of h-WO3 Fig Raman spectra of (a) HATB;...
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Preparation of chitosan magnetite composite beads and their application for removal of Pb(II) and Ni(II) from aqueous solution
Ngày tải lên :
02/07/2014, 14:14
... plate-like (Pb adsorption, Fig 8f) morphologies, corresponding to Ni and Pb posterior adsorptions respectively could be a result of NiO·H2O or PbO·H2O formation on the surface The EDS spectra of unexposed ... mechanism of the adsorption and the characteristics of isotherms are needed before the interpretation of the kinetics of the adsorption process Many models have been proposed to explain adsorption ... respectively The results of adsorption studies of Ni(II) and Pb(II) with the fitted Langmuir equations at different concentrations of Ni (II) and Pb(II) for pH =4–6 on a fixed amount of adsorbent were presented...
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Study in the preparation of poly (4 vinylpyridine) based nanoparticles and their application as an effective adsorbent for the recovery of palladium from aqueous solutions
Ngày tải lên :
10/09/2015, 15:54
... for the separation of nanoscale colloids or nanoparticles from solutions For instance, recycling of dendrimers for chemical catalysis or copper ion adsorption has been successfully conducted with ... pair from pyridine to the metal ion coordinated In general, soft acids like palladium, as categorized by the hard and soft acid and bases theory (HSAB) (Pearson, 1963), would interact strongly with ... Dr Miao Jing, and other supporting staff for administrative work and laboratory support of the Department of Chemical and Biomolecular Engineering as well as Division of Environmental Science and...
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Removal of congo red from wastewater by adsorption onto waste red mud
Ngày tải lên :
23/09/2012, 14:47
... change the data were for of the effect dye after Langmuir taken from and batch of agitation dose in absorbance removal and adsorbent desorption adsorption of 10 mg/L greater Several dye time, on ... changes Tokyo) pH of the dye changed the ( 495. 8 U-3210, to 11 In the pH range absorbance absorbance absorption (Model For removal, the than dye was such were different separated as before pH and the ... were time remove prepared with for from the adsorbent 50 100 mL 50 i.e The any Then of The out mL of as dye for an agitation discarded to carried with 250 mg of adsorbent solution washed studies...
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Báo cáo y học: "Antimicrobial Susceptibilities of Brucella Isolates from Various Clinical Speciemens"
Ngày tải lên :
25/10/2012, 11:10
... hospital of the Medical Faculty of Van Yuzuncu Yil University (Van, Turkey) Identification methods: Identification of species was made on the basis of the requirement of CO2 for growth, production of ... Food and Agriculture Organization/World Health Organization FAOWHO Expert Committee on Brucellosis (sixth report) WHO Technical Report Series No 740 Geneva: World Health Organisation; 1986: 5657 ... supplemented with 5% sheep blood and interpreted after 48 hours of incubation at ambient air Mueller-Hinton agar supplemented with 5% sheeps blood was inoculated with suspensions of the test organism...
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Báo cáo y học: "ISOLATION OF CHLAMYDIA PNEUMONIAE FROM SERUM SAMPLES OF THE PATIENTS WITH ACUTE CORONARY SYNDROME"
Ngày tải lên :
26/10/2012, 08:57
... lack of standardized criteria for laboratory diagnostics of chronic C pneumoniae infection as well as contradictory information about distribution of the pathogen throughout of the tissues of human ... sequence (16S rRNA or omp1), best PCR performance has been achieved with DNA extracted with phenol-chloroform protocol, whereas TaqMan PCR sensitivity became unsatisfactory at low values of bacterial ... run of amplification was conducted under cycling conditions consisting of an initial denaturation at 95 C for min, followed by 45 cycles of denaturation at 95 C for 30 sec, annealing at 63°C for...
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Báo cáo y học: " Preparation of RGD-modified Long Circulating Liposome Loading Matrine, and its in vitro Anti-cancer Effects"
Ngày tải lên :
26/10/2012, 08:57
... particles of uniform sizes with little agglutination or adhesion under transmission electronic microscope They showed little change in appearance or size when stored for one week, two weeks or four ... prepared A Hypersil-BDS-C18-column was used with a mobile phase consisting of acetonitrile -alcohol- 0.2% triethylamine (8:2:90, pH adjusted to 3.0 with phosphoric acid) , the detection wavelength was 210nm, ... USA) was used with a mobile phase consisting of 0.05% trifluoroacetic acid in water (eluant A) and 0.05% trifluoroacetic acid in acetonitrile (eluant B) The eluant gradient was set from 10% to...
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Báo cáo y học: " Differentiation of convulsive syncope from epilepsy with an implantable loop recorder Khalil Kanjwal, Beverly Karabin, Yousuf Kanjwal, Blair P Grubb"
Ngày tải lên :
26/10/2012, 09:53
... would often be incontinent of urine and have a postictal period of confusion and disorientation lasting from ten to twenty minutes, followed by severe confusion and fatigue that would persist for ... a careful history and physical examination combined with directed laboratory testing are often effective in arriving at a diagnosis, in some patients establishing a clear cause for recurrent convulsive ... monitoring techniques Zaidi et al (14) found that close to 45% of patients with atypical seizures had a cardiac related cause of these episodes, and it was only because of prolonged monitoring with...
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Nghiên cứu tận dụng nhiệt từ khí xả động cơ reaseach to take full advantage of exhaust gas from engines
Ngày tải lên :
06/12/2012, 08:27
... bin – máy nén Do máy lạnh Ejector nước sử dụng để làm lạnh với nhiệt độ lớn 00 C, nên quan tâm tới máy lạnh Ejector Frêon, phân tích hiệu sơ đồ Sơ đồ máy lạnh Ejector frêon dùng lượng khí xả động ... (bầu sinh hơi); II Ejector; III Thiết bị bay hơi; IV Thiết bị ngưng tụ ; V Van tiết lưu; VI Bơm; VII Động chính; VIII Nồi tận dụng IV VII VI Hình Sơ đồ hệ thống máy lạnh Ejector Freon Sơ đồ hệ thống ... cồng kềnh phải chuyển qua khâu trung gian, máy phát Tua bin Mặt khác, dùng sơ đồ máy lạnh Ejector hiệu suất lại thấp đồng thời tuổi thọ tính công nghệ không phù hợp điều kiện Việt nam nên chọn...
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Characteristics of hydrogen production from food waste and waste activated sludge
Ngày tải lên :
05/09/2013, 08:40
... moles of hydrogen with mole of n-butyrate or moles of hydrogen with mole of acetate from mole of hexose In most cases using soluble defined substrates, hydrogen production yield and major byproduct ... in Korea The generation of food waste reaches 11,237 tons per day in Korea, accounting for 23.2 % of municipal solid wastes (Ministry of environment, 2002) Food waste is the major source of decay, ... bottle was supplemented with 200 mg of KH2PO4, 14 mg of MgCl2•4H2O, mg of Na2MoO4•4H2O, mg of CaCl2•2H2O, 2.5 mg of MnCl2•6H2O, and 10 mg of FeCl2•4H2O, which was modified from Lay et al (1999)...
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INFLUENCE OF PHOSPHORUS RUNOFF FROM AGRICULTURAL AREAS ON ENCLOSED SEA DOWNSTREAM
Ngày tải lên :
05/09/2013, 09:08
... watershed of the Hamada river, was collected for an experimental test on desorption of phosphorus from SS The soil was combined with artificial seawater, which was made by adding 32 g of NaCl, 14 g of ... runoff characteristics of PP were of the washout type The loading of PP from agricultural Table Values of the constants n and c and the correlation coefficient(R )of the regression n model of ... pH6 Desorbed PO 3- -P (mg) pH8 0.2 0.1 0 10 20 30 40 Salinity (ppt) Figure Relationships between the amounts of the desorption of PO -P from g of soil of the agricultural area mixed with L of artificial...
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Evaluation of Nutrient Loads from a Citrus Orchard in Japan
Ngày tải lên :
05/09/2013, 10:15
... forest had been changed to orchard, and the land use is simply composed of forest and orchard The study site downstream of the orchard receives the orchard discharge; the area of the watershed at the ... Evaluation of phosphorus load in accordance with two L-Q equations Observed data of weekly research (from November 2006 to October 2007) are shown as dots Black line, for Case 3; gray line, for Case ... period of increasing of water discharge differed greatly from those in the period of their decreasing During a rainfall event, the SS concentrations increase by more than one or two orders of magnitude...
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The phenomenon of evaporative cooling from a humid surface as an alternative method for air-conditioning
Ngày tải lên :
05/09/2013, 16:10
... developed by Dr John R Watt, who worked for the Research Laboratory of the U.S Navy He built and studied four prototypes of plate evaporative coolers, one of them constituted of two stages; as well as ... consists of various indirect evaporative coolers, and permit to sensible cooling part of the air, theoretically up to the dew point temperature of outdoor air When absolute humidity of outdoor air ... principles of refrigeration by mechanical compression or absorption It is important to note which are the historical background and the development of this technology till nowadays Originally,...
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Study of contaminants stemmed from the waste water of the Ivorian Refining Company
Ngày tải lên :
05/09/2013, 16:10
... that n-alkanes with a carbon chain of or more atoms are the hydrocarbons that are more easily degraded by a wide range of micro organisms [15] 3.1 Environmental consequences The risk of spreading ... composed of: The column: A Restek apolar capillary column MXT100 (diameter 0.25 mm, 100 meters) is used The pressure of the vector gas is equal to 200 kPa at the top of the column with a flow He of ... programmed to vary from 40 °C to a maximum of 300 °C at a rate of °C/min The injector: The injection from cold in the column is quickly followed by a rapid increase in temperature at a rate of 150 °C/min...
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Cách dùng Made of và Made from
Ngày tải lên :
14/10/2013, 16:11
... This house is made of bricks The keyboard I use on my computer is made of plastic Còn trường hợp các ví dụ ở nhóm sau, - trees - ví dụ The paper is made from trees thì đó cối ... This cake is made from all natural ingredients Tóm lại quy tắc chung là: Nếu một chất liệu nào đó vẫn giữ nguyên dạng thức của nó thì chúng ta dùng made of Nhưng nếu dạng ... cối - trees - không còn là nữa, mà đã trở thành giấy Nếu chúng ta nói Wine is made from grapes - trái nho - thì những quả nho đã không còn là nho được làm thành rượu vang,...
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Overview of Plant Biotechnology from Its Early Roots to the Present
Ngày tải lên :
25/10/2013, 05:20
... creation of an information base with the application of functional genomics, genetic and metabolic engineering of plant cells, and cultivation of modified plant cell lines in bioreactors for high-value ... Regiospecificity allows for more precise conversion of one or more specific functional groups into others or, in the case of precursor molecules, selective introduction of functional groups on ... incredible amount of useful genetic information in a much more highly controlled and targeted manner This is especially important for the use of GM (genetically modified) organisms, in spite of risks and...
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ETHYL ALCOHOL
Ngày tải lên :
25/10/2013, 09:20
... certain important or remote points in the area from which the mill draws its supplies Transport is arranged by the factory, either by railway, or more often by lorries or by tractors and trailers ... stone or piece of wood covered with shark skin or sharp stones set in basketwork has been used in the West Indies Graters made from flat pieces of wood into which splinters of thorn, teeth or fish ... water bath or on a steam cone In both laboratory and technical operations the problem often arises of separating or purifying by distillation a mixture of two or more liquids, all of which are...
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A STUDY ON THE TRANSLATION OF ACCOUNTING TERMS FROM ENGLISH INTO VIETNAMESE
Ngày tải lên :
11/12/2013, 23:53
... of equivalent effect' (1964:159) In the second edition (1982) or their work, the two theorists provide a more detailed explanation of each type of equivalence Formal correspondence consists of ... matter without the manner, or the content without the form of the original Usually it is a paraphrase much longer than the original Therefore, the advantage is that the text in TL sounds more natural ... industry With “open” policies for all countries in the world and the integration process of the globalization, there are more and more foreign investors in Vietnam This creates chances for economic...
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A STUDY ON THE TRANSLATION OF WEATHER TERMS FROM ENGLISH INTO VIETNAMESE
Ngày tải lên :
11/12/2013, 23:55
... abbreviation is a shortened form of a word or phrase Usually, but not always, it consists of a letter or group of letters taken from the word or phrase For example, the word abbreviation can ... matter without the manner, or the content without the form of the original, but the translator just transmit meanings of the SL in others expression Usually, it is a paraphrase much longer than original ... however, were more precise describing it as the teaching of English used in academic studies or teaching of English for vocational or professional purpose Tony Dudley-Evans, co-editor of the ESP...
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A study on translation of movie titles from english into vietnamese
Ngày tải lên :
11/12/2013, 23:55
... 1.1.3.12 Horror movie Horror films are movies that strive to elicit the emotions of fear, horror and terror from viewers Their plots frequently involve themes of death, the supernatural or mental ... the major studios and many respected directors have made forays into the genre Serious critics have anylized horror films through the prisms of genre theory and the amateur theory Some horror films ... majority of imported films are from the USA and require no translation Countries with high percentage of imported films have a great and steady demand for translation such as Netherlands, Norway,...
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