Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells
Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells
. prepare the PVDF composite membrane. The structure and the morphology of the PVDF-SPS composite membrane were characterized. The proton conductivity and the methanol. Foundation. All rights reserved. Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells Qian Liu, Laizhou Song,...
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Tài liệu Báo cáo "Preparation and characterization of nanocomposite TiO2/SnO2 films " pdf
... X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses to identify the structure, and the morphology of the samples. Figure 1 shows the XRD result for the TiO2 film prepared ... oC. The sharp peaks of the XRD pattern indicate that TiO2 with high crystallinity and high phase purity was formed from the TiCl4 solution by using thermal hydrolysis. The average size of ... characteristic of SnO2 /TiO2:SnO2 /SnO2 system. The dark resistance (RD) and the light resistance (RL) under the irradiation of 7W Hg lamp at the distance of 10cm were measured. The calculated...
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Tài liệu Báo cáo khoa học: Identification and characterization of the transcription factors involved in T-cell development, t-bet, stat6 and foxp3, within the zebrafish, Danio rerio docx
... expression of T-bet has beenseen within a wide variety of tissues and cells in the Ginbuna crucian carp [27] and, in mammals, in the lung tissue of mouse and spleen and thymus of human and mouse ... stat6,zftbet-F1 and zftbet-R1 for t-bet, and zffoxp3-F1, zffoxp3-R1, zffoxp3-F2 and zffoxp3-R2 for foxp3. These primers amplified part of the initial predictedsequence which contained the majority of the ... (Th) cells. The differentia-tion of naive T -cells into Th effector cells depends ona variety of stimuli, such as antigen nature, antigendose and the strength and duration of signals throughthe...
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Tài liệu Báo cáo khóa học: Non-specific depolymerization of chitosan by pronase and characterization of the resultant products pptx
... 200 mg KBr and 40 mg of the mixture was pelletized. The reproducibility of the spectra was verified on two preparations and the degree of acetylation (DA) was determined using the formula(A1655Æcm)1/A3450Æcm)1) ... terminate the reaction, the mixture was heated for 5 min followed by the addition of an equal volume of 2MNaOH and centrifugation (1000 g)ofthereactionmixture. The supernatant was analyzed for reducinggroups ... An examination of DA values indicates that the total DA of the products is equal to that of nativechitosan (19% for LMWC and 31.2% for chito-oligomers+ monomer, the average of these is 25.1%,...
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Tài liệu Báo cáo khoa học: Phenol hydroxylase from Acinetobacter radioresistens S13 Isolation and characterization of the regulatory component docx
... the firsthypothesis and therefore a direct involvement of PHI inelectron transfer. This conclusion is consistent with the verylow degree of identity between the N-terminal sequence of PHI and ... onePHR and one PHO (abc) protomer. The hypothesis of a direct PHI–phenol interaction is quite unlikely, because of the fact that the addition of phenol does not alter the emission spectrum of PHI. ... shown in the inset, the progressive decrease of the molecular ellipticity atk ¼ 200 nm (the absorption region of the peptide bond)reflects the occurrence of a transition between 35° and 55 °C.PHI...
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Tài liệu Báo cáo Y học: Identification and characterization of the Escherichia coli stress protein UP12, a putative in vivo substrate of GroEL pptx
... composition of the cell wall,DNA organization, synthesis of storage compounds such asglycogen and polyphosphate, and other cellular processes[1,2]. As a result of these changes, the cells become ... site and two flanking unrelated short sequences. The DNA sequen-cing and the deoxyoligonucleotide synthesis were performedby the Scientific Services Department of the WeizmannInstitute of Science.Construction ... between the amounts of UP12 and the total amount of protein in the extracts, a series of samplescontaining determined amounts of the purified UP12 wereseparated by SDS/PAGE along with the cell...
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Báo cáo khoa học: Purification and characterization of the cysteine proteinases in the latex of Vasconcellea spp. ppt
... content in their latex; and (2) the pres-ence of other cysteine proteinases or isoforms in the latex. To investigate these two hypotheses, the proteinconcentration per milligram of dried latex, ... the other sequences. The MP tree reveals threemajor clusters. Cluster I combines the five chymo-papain isoforms of C. papaya with VXH-C, VS-B,CC-III and CC23. These results confirm the hypothesis of ... organs of members of the small plant familyCaricaceae [1]. The two economically most importantgenera of this family are the commonly grown tropicalspecies Carica papaya and the group of highland...
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Báo cáo khoa học: Cloning and characterization of the genes encoding toxic lectins in mistletoe (Viscum album L) pot
... intensivethan the others. Thus, the different intensity of the bandsmay be the result of a different copy number of the genes in the hybridizing fragments. If so, the number of the bands donot ... counter. The quantitativeratio of the amplification products of the three gene variantsin the amplified fragment was assessed by calculation of the ratio of radioactivity of the corresponding bands.Quantitative ... agarosegel and the bands corresponding to genomic fragment(length of 415/430 bp) and competitor fragment (length of 388 bp) were excised. Radioactivity of the bands was thenmeasured as for the assessment...
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Báo cáo khoa học: Expression and characterization of the protein Rv1399c from Mycobacterium tuberculosis A novel carboxyl esterase structurally related to the HSL family docx
... experimentally. Indeed, the presence of Arg213 along with the proximity of the chargerelay Asp260 within the active site could be responsible for the modification of the catalytic properties of the catalytichistidine. ... efficient nucleophilic attack of the substrate ester bond by the serine alcoholate. The shape of the titration curve of the catalytic histidine shows anapparent pKa value of the essential histidine ... is the so-calledoxyanion hole necessary for the stabilization of the oxyan-ion transition state [34]. In Rv1399c, the oxyanion hole islikely to be formed by the amides of Ala163, Gly89 and Gly90,...
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Báo cáo Y học: Cloning, chromosomal localization and characterization of the murine mucin gene orthologous to human MUC4 pdf
... represents the codon for initiation of translation and, therefore, codes for the N-terminus of the protein. This fragment contains a 105-bp fragment of 5¢untranslated sequence upstream of the putative ... obtained and studiedbut their analysis showed that they did not contain the central region or the 5¢ end of the gene. The cosmid clonecontaining the longest part of the new gene was namedCAR1 and ... mappingexperiments. The last exon is composed of a codingsequence of 193 bp and of an untranslated region of atleast 131 bp. The size of the 24 introns ranges from 79 bp toabout 16 kb. The size of the largest...
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Từ khóa: proceedings of the sixth international symposium on solid oxide fuel cellsnanoparticle an overview of preparation and characterizationhomeostasis and metabolism of the organismsclassifications and scores of the shoulderelectrochemical preparation and properties of novelmethodology and approach of the studyBáo cáo quy trình mua hàng CT CP Công Nghệ NPVđề thi thử THPTQG 2019 toán THPT chuyên thái bình lần 2 có lời giảiBiện pháp quản lý hoạt động dạy hát xoan trong trường trung học cơ sở huyện lâm thao, phú thọGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitGiáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôitĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWANPhát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ longNghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúngNghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000Thiết kế và chế tạo mô hình biến tần (inverter) cho máy điều hòa không khíChuong 2 nhận dạng rui roKiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)Tranh tụng tại phiên tòa hình sự sơ thẩm theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn xét xử của các Tòa án quân sự Quân khu (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vậtNguyên tắc phân hóa trách nhiệm hình sự đối với người dưới 18 tuổi phạm tội trong pháp luật hình sự Việt Nam (Luận văn thạc sĩ)Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vậtTrách nhiệm của người sử dụng lao động đối với lao động nữ theo pháp luật lao động Việt Nam từ thực tiễn các khu công nghiệp tại thành phố Hồ Chí Minh (Luận văn thạc sĩ)BÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘIChiến lược marketing tại ngân hàng Agribank chi nhánh Sài Gòn từ 2013-2015Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt nam