preparation and standardization of hcl and naoh solutions

... 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 Engineering, ... Figure 3.11 Electron micrographs of P4VP-PEGMA nanoparticles (B-5) crosslinked with (a) wt.% of DVB, and (b) wt.% of EGDM, (c) wt.% of PEGDM (n=13), and (d) wt.% of PEGDM (n=9) (wet-casted from ... feasibility and effectiveness 1.3 Organization of the Thesis The contents of this thesis revolve around and branch out from the central theme of the doctoral research project, i.e the preparation and...

Ngày tải lên: 10/09/2015, 15:54

... Investment and Development of Vietnam – the first unit of the system of Bank for Investment and Development of Vietnam to deploy the Project of Modernization of the payment system and the modernization ... technology and business norms of a modern bank However, according to the present regulation of the State bank and the Charter of Organization and Operation of Bank for Investment and Development of Vietnam, ... expand the operational network of Bank for Investment and Development of Vietnam in Hanoi City, assisting Bank for Investment and Development of Vietnam to seize and take the opportunity to expand...

Ngày tải lên: 27/10/2012, 16:49

... diameter of the PVDF membrane, the PVDF-PS membrane and the PVDF-SPS membrane is 0.25 µm, 0.12 µm and 0.16 µm, respectively It can be seen that the polymerization of styrene and the blending of PS and ... (DMAc) firstly, and then styrene, divinylbenzene (DVB) and benzoyl peroxide (BPO) were added to the solution and stirred with water bath at 343 K The dosage of PVDF, styrene, DVB and BPO was that ... International Journal of Energy and Environment (IJEE), Volume 1, Issue 4, 2010, pp.643-656 645 2.5 Measurement of proton conductivity The proton conductivity of the PVDF-SPS membrane and Nafion-117...

Ngày tải lên: 05/09/2013, 16:11

... causes of the errors and offering proper solutions From the statistics and findings, some solutions for fourth year students’ pronunciation errors in FLD, VU were figured out 2.4 Findings and Discussion ... on English errors made by fourth year students of English at VU and suggested solutions 16 Aims and Objectives of the Study English phonetics is of great importance as it lays basis for effective ... other teachers of English After collecting the recording data, we, based on the characteristics of vowel and consonant sounds, checked and took notes of their errors, then classified and put them...

Ngày tải lên: 18/12/2013, 10:03

... range of 227-247 o C and the ratio of the height of the main peak to that of the other small peaks is rather great In order to obtain high sensitive LiF:Mg,Cu,Na,Si TL powder, the optimum preparation ... as a single dopant and its concentration was calculated as total of Na and Si because the compound Na2 SiO3.9H2 O was added) The X-ray diffraction (XRD) patterns of four kinds of the above mentioned ... appears at 247 o C and the other small peaks are at 150, 205, and 280 o C Comparing the glow curves shown in Fig 2, one can note that the ratio of the height of the main peak to that of the other small...

Ngày tải lên: 13/02/2014, 04:20

... Shi, Preparation, electronic structure and photocatalytic activity of the In2TiO5, Materials Science and Engineering: B Vol 139 (1) (2007) 74 J.H Kim, S.H Kim, et al., Fabrication of nanoporous and ... concentration of the SnCl4 solution, and the films were annealed at different temperatures and for different period of time Photoconductivity measurement In order to evaluate properties of obtained ... resistance (RD) and the light resistance (RL) under the irradiation of 7W Hg lamp at the distance of 10cm were measured The calculated ratio of RD/RL was considered as a photoconductivity of obtained...

Ngày tải lên: 13/02/2014, 04:20

... of TB research and policy Appendix B of this report includes a summary of the NIAID meeting This section and the two that follow are based on the welcoming remarks of P N Tandon, Emeritus Professor, ... if present, and side effects demand comprehensive monitoring and treatment Predictors of success in the treatment of MDR TB are the use of pyrazinamide and ethambutol if the strain of TB is susceptible ... Innovations and Action Items, 26 13 THE GLOBAL BURDEN OF DRUG-RESISTANT TB Overview of the Global Burden of TB and MDR TB, 29 MDR TB Prevention and Control in China, 31 Historical Perspective on TB and...

Ngày tải lên: 05/03/2014, 11:20

Ngày tải lên: 14/03/2014, 13:20

... formation of SiO2 nanowires can obtained through XPS The two strong peaks at 103.35 and 532.65 eV as shown in Results and discussion TEM micrography shows the general morphology and dimension of SiONWs ... Fig 1(b) indicates the amoeba-shape of the nanowires, with the diameter of about 70 nm and a length up to tens of micrometers Fig 1(c) shows frog-egg morphology of the nanowires, which is similar ... tops of the nanowires [17] The growth of the nanowires Fig XPS of the sample (a) survey spectrum of the sample; (b) Si2p binding energy spectrum; (c) O1s binding energy spectrum Fig PL spectrum of...

Ngày tải lên: 16/03/2014, 15:07

... temperatures of 1100 and 1200 °C The composition analysis of the products was achieved using EDS Fig 2(d) shows EDS spectrum of the nanowires, indicating that the products only consist of silicon and ... magnification SEM image of nanowire tops, (d) EDS of the nanowires X.J Wang et al / Materials Letters 63 (2009) 1149–1152 1151 Fig TEM and HRTEM images of SiOx nanowires intensities of Fe3O4 nanoparticles ... uniformly covered on the surface of Si(111) substrate, as illustrated in Fig 2(a) and (b) The lengths of these nanowires are in the range of several tens to hundreds of micrometers Fig 2(c) shows...

Ngày tải lên: 16/03/2014, 15:11

... that of the Western and Midland regions of the United States, while the phonological system of western Canadian English is identical to that of the Pacific Northwest of the United States, and ... rough unit of distance derived from the length of the same ―Office‖ - BE- a government department ("Colonial Office", "Foreign and CommonwealthOffice") the outbuildings and dependencies of a dwelling ... linguists And vocabulary, which is considered a very important branch of English language, is investigated and studied by many of lexicologists However, most of us often care for vocabulary and grammar...

Ngày tải lên: 17/03/2014, 16:47

... area of CNTs was also the basis for formation of the composites Though the density of TiO2 is larger than that of CNTs, the TiO2 – CNTs composites could form a homogeneous dispersion in ethanol and ... accelerating voltage of 20 kV The samples were ultrasonicated in ethanol for and then a drop of dispersion was deposited on a Cu/Rh grid covered with formvar, a vinyl polymer, and the grid was dried ... spectrum of purified CNTs oxygenated groups which were beneficial to its combination with TiO2 then From the above results, the total area of the C 1s peak region of the MWNTs sample consists of 68.37%...

Ngày tải lên: 20/03/2014, 13:06

... 2977 Fig Schematic representation of the growth diagram of nanosheet and nanorods/nanoparticles TiO2 surface area and pore volume of the sample are about 642 m2/g and 0.774 cm3/g, respectively The ... images of the nanosheet TiO2 calcined at 600 and 700 °C showed almost nanoparticles with a mixture of anatase and rutile TiO2 structure (about 10–50 nm in diameter, at 600 °C, Fig 6(g–h)), and rutile ... the use of TEM apparatus and to Prof T Yoko, Institute for Chemical Research, Kyoto University for the use of XRD equipment This work was supported by grant-inaids from the Ministry of Education,...

Ngày tải lên: 20/03/2014, 13:06

... 70 and 140 K (inset of Fig 3): Fig Linear correlation of WNVV/TiLMM AES ratio and W4f intensity with amount of deposited WO3, the latter is plotted in units of WO3 nmÀ2 based QCM measurement of ... lengths and angles) of O, W and Ti are expected but, not surprisingly, are too small to be detectable as shifts of W4f and Ti2p core level BEs and cannot be resolved in STM images The appearance of ... Department of Energy, Of ce of Basic Energy Sciences, Chemical Sciences Division under grant DE-FG02-03ER15480 to the University of Texas and the Center for Materials Chemistry at the University of Texas...

Ngày tải lên: 20/03/2014, 13:06

... spectra of samples S2 (a) and S3 (b) can be exclusively indexed to ␣-Fe2 O3 , according to standard data (JCPDS 33-0664) In Fig 1(b) and (c), the reflection peaks of XRD patterns of S2 and S3, ... in sample S3 (e and f) B Lv et al / Particuology (2008) 334–339 and outer and inner diameters of 70–120 nm and 45–80 nm, respectively Fig 3(c) and (d) show the morphologies of Fe3 O4 nanotubes ... López-Urías, and Mu˜ oz-Sandoval (2005) n simulated the micromagnetic property of iron nanorings, and they found large coercive fields for din /dout > 0.5 (din and dout are the inner and outer diameters of...

Ngày tải lên: 20/03/2014, 13:06

... hates football (Hanh, 2006:90) Lexemes like on and off, good and bad, love and hate are pairs of antonyms They indicate the words of the same part of speech, which have contrasting or opposite ... the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of light, it was the season of darkness, it was the spring of hope, ... chapter II, antonyms of adjectives, antonyms of verbs, antonyms of nouns, and antonyms of adverbs are studied carefully Antonyms of polysemantic nouns In the part, we study the cases of polysemantic...

Ngày tải lên: 21/03/2014, 09:17

... in the evolution of bacteria and moulds, and then very early recruited in the metazoans Here we report the expression and purification of recombinant geodin and its thermodynamic and spectroscopic ... IB preparation; lane 4, geodin purified from the S preparation 1024 Fig Gel filtration on Superdex G-75 of the proteins from the S preparation (A) and the IB preparation (B) from the lysate of ... of thermodynamic stability, are of about 80 kJÆmol)1 for human-cS and spherulin 3a, and of 41 and 45 kJÆmol)1 for geodin and protein S, respectively The value of 45 kJÆmol)1 for protein S is...

Ngày tải lên: 30/03/2014, 15:20

... requiring  a knowledge of the preparation and serving of special food items i CONTENTS LESSON CREDIT HOURS TITLE PAGE Buffet Service 2 Preparation and Serving of Appetizers and Pastry 33                Examination                                        1 ... ASSIGNMENT SUBJECT Preparation and Serving of Appetizers and Pastry STUDY ASSIGNMENT Lesson Text SCOPE Purpose of appetizers; selecting, preparing, and serving hot and cold canapes and hors d'oeuvres; selecting and ... Planning sit­down and finger­type buffets; menu planning; table arrangement; arrangement and replenishment of food; arrangement of beverages, utensils, and decorations; selection, construction, and display of centerpieces...

Ngày tải lên: 03/05/2014, 12:14

... CTAB;[16] and 0.5 mL of the resulting Fe3 O4 /CTAB aqueous solution were diluted with 10 mL of water Then 0.3 mL of NH4 OH aqueous solution, 0.03 mL of tetraethylorthosilicate (TEOS), and 0.5 mL of ... 3.6 g of iron-oleate, 1.91 mL of oleylamine and 0.64 mL of oleic acid were mixed together and were heated at 120∘C for one hour After that, the dark solution was quickly heated up to 200∘C and ... previously published literature Briefly, 127 mg of tellurium powder was reacted with 80 mg of sodium borohydride (NaBH4 ) in mL of deionized water for preparation of sodium hydrogen telluride (NaHTe) solution...

Ngày tải lên: 14/05/2014, 15:49

... better understanding of the impact of intra-BSS and inter-BSS interference, respectively referring to the amount of collisions and interference among nodes belonging to the same BSS and nodes belonging ... RSUs are considered The second and the third line respectively refer to the average number of users joining the BSS of one of the available RSUs and the BSS of one of the 30 OBUs acting as WAVE ... features of IEEE 802.11p and WAVE; in Section 3, the obstruction model is presented and further validated by a ray-tracing software; simulation settings and results are respectively presented and...

Ngày tải lên: 20/06/2014, 22:20