... Minh,2006 http://www.docstoc.com/docs/2290742/What-is-ethylene -oxide http://www.freshpatents.com/Processes-for-the-production-of-ethylene -oxide- and-ethylene-glycol-dt20080731ptan20080182999.ph p • ... hiên thủy phân ethylenoxide tạo thành ethylen glycol Thiết bị chưng cất C H O + H O → HOCH - CH OH 2 I THUYẾT MINH QUÁ TRÌNH CÔNG NGHỆ II CHỌN THÔNG SỐ CHO QUY TRÌNH SẢN XUẤT ETHYLEN GLYCOL ... Ở coi phản ứng bậc (n nước / nethylen oxide= 95) Giả sử thực phản ứng điều kiện sau: • QD= 1.5K tấn/ năm QD=2.76 Kmol/h • XA=0.85 Nên Suất lượng nhập liệu ethylenoxide : FD=3.247 (kmol/h) • CAo=1.7...
... Phys Chem B, 1C8, 16567- 16576(2004) Lien he: Nguyen Hoa My Khoa Hda hgc Trudng Dai hgc Khoa hgc Tu nhien 19 Le Thanh Tdng Ha Ndi Email: minguyenhoa(2)yahoo.com.vn 715 ... gian tfnh tdan Cd/7^^ trinh nhgn dugc tdi trg tif Bg Khoa hoc vd Cong nghe thong qua de tdi Khoa hgc co bdn md sd 507206 Trudng Dgi hgc Khoa hoc Tii nhien, DHQG Hd Ngi dd tdi trg cho cong trinh ... bang each tfnh 5000 budc ddng lire Langevin (ngiu nhien) d the tfch khong ddi Khoang rong ciia budc md phdng la fs Khoang thdi gian de can chinh nhiet (tau_t) li 0.1 ps thuat toin LINCS [5] dugc...
... tính bền nước Kết hợp với hàm lượng vôi tự ( thành phần gây hại) có clinker vôi tự (sinh trình hydrate hóa) để tạo thành hợp chất có tính kết dính (có lợi) Giá puzzolan thấp nên giúp hạ giá thành ... phân tích hóa học TCVN 6227:1996: Cát tiêu chuẩn Iso để xác định độ bền xi măng Và số sách giáo khoa chuyên ngành xi măng, vật liệu xây dựng ...
... giảm nhiệt độ 40°c 12 cho dung môi bay hoàn toàn Lớp film lipid mỏng tạo thành bám đểu bình cẩu hydrathóa dung dịch đệm phosphat 0,1 M; pH 6,5 chứa ACV mg/ml nhiệt độ 50°c 60 phút Hỗn dịch liposome ... luận Chúng nghiên cứu khảo sát xây dựng công thức liposome đàn hổi niosome bào chế phương pháp hydrathóa màng Kết nghiên cứu cho thấy lỉposome đàn hổi nỉosome có khả cải thiện thấm AG/ tốt qua...
... Kết luận Đã bào chế liposome nifedipin phương pháp hydrathóa film với thông số lựa chọn sau: bốc dung môi áp suất giảm nhiệt độ 40°c 18 giờ, hydrathóa trở lại màng film dung dịch đệm phosphat ... nifedipin choi lớn 50 mol% làm nhiệt độ chuyển pha phospholipid, lớp màng film bong tróc hết trình hydrathóa trở lại [3] Do khảo sát mẫu có tỉ lệ nifedipin choi nhỏ 50 mol% Về thời gian cất quay,...
... nguyên tố EDX Từ kết XRD rút đặc trưng hạt nano spinen ZnAl2-xCrxO4 (bảng 3.12) 10 BO MON HOA VAT LIEU-KHOA HOA- TRUONG DHKHTN Ten may: GX-PerkinElmer-USA Nguoi do: Phan Thi Tuyet Mai DT:01684097382 ... "Mg-V-Al mixed oxides with mesoporous properties using lavered double hydroxides as precursors: catalytic behavior for the process of ethylbenzene dehydrogenation to styrene under a carbon oxide flow", ... cao cho phản ứng oxidehydro hóa EB thành ST Nghiên cứu hình thành nanospinen dãy xúc tác ZnCrxAl2-xO4, Zn1-xCuxAl2O4 tìm quy luật tính chất đặc trưng hoạt tính chúng phản ứng oxidehydro hoá EB...
... nhụm oxit hydrat hoỏ ton phn, tn ti mt s tõm axit Bronsted cú nhúm OH - [50, 51] B mt ca -Al2O3 v -Al2O3 cú tõm axit Lewis, khụng cú tõm Bronsted, -Al2O3 v -Al2O3, ph thuc vo mc dehydrat hoỏ ... Nguyn Mnh Dng KS Vin Hoỏ hc Cụng nghip VN Li cỏm n Nhúm cỏn b thc hin ti xin trõn trng cỏm n B Khoa hc v Cụng ngh, B Cụng Thng ó cp kinh phớ thc hin ti Cỏm n s hp tỏc ca Vin Nghiờn cu Quỏ trỡnh ... cng chớnh l mc tiờu nghiờn cu ca Nhim v ny PHN I TNG QUAN I C S PHP Lí CA TI - Hp ng Nghiờn cu khoa hc v phỏt trin cụng ngh s 025.09.RD.BS/H-KHCN ngy 30 thỏng 03 nm 2009 ca B Cụng Thng - Quyt...
... radical peroxinitrite, while hydrogen peroxide and superoxide were found ineffective by themselves [31] Since peroxinitrite is formed by reaction of NO with superoxide, we used oxidation of H2DCF as ... P: Inducible nitric oxide synthase activity of cloned murine microglial cells Glia 1993, 7:255-262 Boje KM, Arora PK: Microglial-produced nitric oxide and reactive nitrogen oxides mediate neuronal ... species Nitric Oxide 1997, 1:145-157 Imrich A, Kobzik L: Fluorescence-based measurement of nitric oxide synthase activity in activated rat macrophages using dichlorofluorescin Nitric Oxide 1997,...
... quiescent and immune-challenged state We studied production of immune mediators such as nitric oxide (NO), cytokines, and chemokines We also examined the effects of immune Page of activation ... Nitrite assay and detection of S-nitrosylated proteins Nitrite, a downstream product of nitric oxide (NO), was measured by the Griess reaction in culture supernatants as an indicator of NO production ... acid; Sigma, USA) for min, followed by addition of 100 ul of Griess reagent B (0.1% N-(1-naphtyl) ethylenediamine; Sigma, USA) for The absorbance was determined at 540 nm using a microplate reader...
... nitrogen, carbon dioxide and water In comparison to gasoline engine exhausts, diesel emissions contain a far greater amount of nitrogen oxides and aldehydes but less carbon monoxide Next to these ... variety of components: Next to products arising from the incomplete combustion (carbon monoxide, nitrogen oxides, hydrocarbons including partially oxidized forms such as ketones, aldehydes, phenols, ... articles related to environmental medicine, the search was narrowed and differ- Nitrogen dioxide Nitrogen dioxide (NO2) is an oxidizing free radical which can initiate a number of destructive pathways...
... Development Center, Tianjin, China Poly (oxyethylene) nonylphenol ether [NP-7] (industrial grade) was purchased from Dalian Chemical Ctl., Dalian, China Cobalt oxide [Co3O4] (98%) denoted as C-Co O ... SiO2-based nanocomposite [35,36] Herein, a similar method was used to prepare cobalt-silicon mixed oxide materials, and the obtained material presents as a kind of highly dispersed, uniform-sized ... http://www.nanoscalereslett.com/content/6/1/586 control the size and the distribution of the nanoparticles While for cobalt-silicon mixed oxide, it seems that the uniform particle size distribution remains a delicate task with the normal...
... CaO, and Na O It means that SiO is not the only amorphous oxide on which graphitic carbon can be fabricated Considering the variety of oxides, the quality of graphitic carbon can be improved much ... functions are used to fit D, G, and 2D peaks FWHM, full width at half maximum Now, we turn to amorphous oxides, which are more relevant to the MOS technology First, we tested 100nm-thick TiO2 and Ta2O5 ... sharpness and the intensity of D, G, and 2D peaks Let us start with carbon deposited on crystalline oxide substrates Figure shows the Raman spectra from the carbon films grown on SrTiO (100) and YSZ(100)...
... mechanism of iron oxide/ TiO hybrid NPs The results maybe provide some new insights into the growth mechanism of iron oxide- TiO2 composite NPs It is shown that the as-synthesized iron oxide/ TiO2 hybrid ... Si Si Si H2N Si Si Si APTES H2N Si Si Iron Oxide Ti4+ NH2 Iron Oxide@ TiO2 Figure Illustration of the synthetic chemistry and process of magnetic iron oxide/ TiO2 hybrid NPs preparation temperature ... of amino-functionalized iron oxide NPs by hydrolysis and poly-condensation as follows: (1) (2) We prepared the monodisperse spindle-like iron oxide NPs by ferric hydroxide precipitate method for...
... Superparamagnetic iron oxide nanoparticle probes for molecular imaging Ann Biomed Eng 2006, 34:23-38 21 Kim DK, Zhang Y, Voit W, Rao KV, Kehr J, Bjelke B, Muhammed M: Superparamagnetic iron oxide nanoparticles ... Briefly, ferric and ferrous chlorides were dissolved in M HCl in 2:1 (w/w) ratio and bare iron oxide was obtained by addition of 1.5 M NaOH All steps were performed under nitrogen environment ... desired lengths and cross-sections by suitably tuning the formation parameters Superparamagnetic iron oxide nanoparticles The average hydrodynamic size of the as-synthesized SPIONs was measured by DLS...
... the FTIR spectra for bare iron oxide and carbon-coated iron oxide nanoparticles, respectively The bands at 1,700 and 1,610 cm−1 in the spectra of carbon-coated iron oxide are associated with the ... FTIR spectra for bare iron oxide (a) and carbon-coated iron oxide (b) nanoparticles, respectively The bands at 1,700 and 1,610 cm−1 in the spectra of carbon-coated iron oxide are associated with ... an aqueous solution of carbon-coated iron oxide nanoparticles We found that the T1 and T2 relaxivities for the aqueous solution of carbon-coated iron oxide nanoparticles were 1.139 and 1.115 (mM·s)−1,...
... fewest parasitic bulk structures is achieved for an oxide layer thickness between the native oxide and no oxide More precisely we have found that an oxide layer of ± Å gives the best results for our ... clearly shows that the oxide layer plays a major role for selfassisted NW growth Another pre-processing approach is to remove the oxide layer completely by HF and then regrow the oxide layer The latter ... systems might be due to the A Study of the oxide layer All substrates are covered by a native oxide layer Using spectroscopic ellipsometry we have measured the oxide layer thicknesses to (14 ± 1) Å...