introduction to battery technology

... variety of products designed to meet new applications Not so long ago, mention of a battery to many people brought to mind the image of an automotive battery or a torch battery and, indeed, these ... required to account for the observed potential differences varied from enormously great to 1/8 Introduction to battery technology almost infinitely small values, to which it was difficult to ascribe ... is the duration of the discharge in hours - CTOTx RTOT m2xE, - CTOTx RTOT mETOT -~ - CTOT (1 IQQ) mrTOT Using these equations it is now possible to calculate for any arrangement of n files in...

Ngày tải lên: 18/04/2014, 11:04

... variety of products designed to meet new applications Not so long ago, mention of a battery to many people brought to mind the image of an automotive battery or a torch battery and, indeed, these ... required to account for the observed potential differences varied from enormously great to 1/8 Introduction to battery technology almost infinitely small values, to which it was difficult to ascribe ... is the duration of the discharge in hours - CTOTx RTOT m2xE, - CTOTx RTOT mETOT -~ - CTOT (1 IQQ) mrTOT Using these equations it is now possible to calculate for any arrangement of n files in...

Ngày tải lên: 04/06/2014, 23:13

... term, due to its good processability, environmental stability and reversible control of conductivity both by charge-transfer doping and protonation.8 The use of PANI together with CNTs to form ... remain an issue.10 The aim of this study is to fill the MWCNTs with MnO2 in order to improve the interaction between the MWCNTs and PANI, which may lead to an increase in the electron conductivity ... The enhancement in conductivity of PANI/MWCNTs compared to neat PANI is due to the charge transfer effect from the quinoid rings of the PANI to the MWCNTs Furthermore, the MWCNTs may serve as “conducting...

Ngày tải lên: 07/08/2014, 14:20

... 1-O-α-L-rhamnopyranosyl-(1→2)-β-D-galactopyranoside (III) (25S)-ruscogenin 1-O-α-L-rhamnopyranosyl-(1→2)-β-D-galactopyranoside (IV) Ngoài ra, hành tây có loại sapogenin khác diosgenin cepagenin 12 Sitosterol Oleanolic ... Philadelphia, PA) Hai van ngắt (5, 10, Autoclave Engineers, Erie, PA) sử dụng để hỗ trợ điều áp giảm áp hệ thống Một bơm piston (8, Model 305, Gilson, Middletown, WI) sử dụng để tuần hoàn khí CO2 ... mm) sử dụng máy trộn tốc độ cao (Blender 7012S, Waring Co., Torrington, CT, USA) Tất mẫu lưu trữ tủ lạnh trì 4oC Các mảnh vỏ hành diatomaceous earth (DE, tảo cát trái đất) (ASE® Prep DE, DIONEX...

Ngày tải lên: 19/03/2013, 14:41

... permanganate, according to literature, and this reaction is finished at the second round Mogan and stumm finds that the potassium permanganate demand to oxidize manganese is less than the stoichiometric ... of hardness removal Three types of nanofiltration membrane such as UTC-60(TORAY), NTR729-HF(NITTO DENCO) and UTC-20(TORAY) was used The characteristics of membrane were shown in Table Table Characteristics ... 0.069 m3/m2/hr 93% for UTC-20, 25% for UTC-60 Removal of total hardness was about Chose water flux and senior superintendent to optimum film to hardness removal because UTC-20 fluxes displays intermediate...

Ngày tải lên: 05/09/2013, 08:40

... and Technology 31 (5-6), 123-129 Saito T., Iwase T., Horie J and Morioka T (1992) Mode of photocatalytic bactericidal action of powdered semiconductor TiO2 on mutans streptococci Journal of Photochemistry ... magnetic stirrer to prevent settling of the photocatalyst A bacterial suspension without photocatalyst was irradiated as a control and the - 48 - Journal of Water and Environment Technology, Vol.3, ... AND DISCUSSION Bactericidal effect of Ag-sensitized photocatalyst In order to investigate the bactericidal effect of photocatalyst itself towards M lylae, a dark control experiment was performed...

Ngày tải lên: 05/09/2013, 09:08

... Environment (IJEE), Volume 2, Issue 2, 2011, pp.219-230 wr = c pa (To − T1 )[ε eThc − {To ε e − (To − T1 )}] 221 (1) η r {ε eTo − (To − T1 )} where wr is the work of refrigeration (kJ/kg of air), ... evaporator and condenser, respectively Thc = b± (b − 4ac 2a ) (2) where a = X (To + T1 ) X = ε e (2 - ε c ) b = (2 X + Y )To2 + 2( X − Y )T 1To + Y 2T12 Y = ε c (2 - ε e ) c = ( X − Z )To3 − ZT12 ... and analysis The topping cycle is based on the Brayton cycle and the bottoming cycle on the Rankine cycle For the gas turbine blade cooling, air bled from the compressor of the topping cycle is...

Ngày tải lên: 05/09/2013, 15:28

... Watanabe, T.; Hashimoto, K Chem Mater 2002, 14, 2812-2816 (23) Fujishima, A.; Rao, T N.; Tryk, D A J Photochem Photobiol., C 2000, 1, 1-21 (24) Mills, A.; Wang, J J Photochem Photobiol., A 1999, ... resonance it gives rise to the observed enhancement in photocatalytic activity Finally, we examined the effect of LSP on photocatalytic activity as a function of the SiO2 thickness Photocatalytic activity ... thickness of the SiO2 layer Photocatalytic activity with 100 nm thick SiO2 was observed to be close to that of pure TiO2 This fact implies that the increase of photocatalytic activity was obtained...

Ngày tải lên: 18/09/2013, 21:27

... đoạn  PƯ xúc tác quang hóa :xúc tác hoạt hóa hấp thụ ánh sáng,6 giai đoạn: Có thêm gđ hấp thụ photon ánh sáng , p.tử chuyển từ trạng thái sang trạng thái kích thích electron Giai đoạn pứ quang ... IV TÍNH XÚC TÁC QUANG HÓA CỦA TIO2 Ở DẠNG ANATASE: Cơ chế xúc tác quang chất bán dẫn ĐK: NL photon ánh sáng(hv) >= NL vùng cấm (Eg) SC : bề mặt xúc tác bán dẫn (TiO2) IV TÍNH XÚC TÁC QUANG HÓA ... CỦA TIO2 Ở DẠNG ANATASE: b)Cơ chế xúc tác quang dị thể   • •  Khi chiếu ánh sáng có lượng photon (hv) thích hợp ≥ lượng vùng cấm (Eg) lên bề mặt xúc tác bán dẫn (SC) tạo cặp điện tử(e-) – lỗ...

Ngày tải lên: 05/12/2013, 09:19

... nano/Diatomite ● Kh o sát v t li u n n Diatomite K t qu phân tích XRF XRD v t li u n n cho th y, hàm lư ng diatomite Phú Yên Diatomite M ph n l n silicon dioxide Trong ñó, lư ng SiO2 t n t i diatomite ... vô ñ nh hình, ch l n tinh th cristobalite 20 xu t hi n nhi u x ñơn l Trong ñó diatomite M xu t hi n nhi u nhi u x c a tinh th cristobalite Thành ph n hóa c a diatomite thương m i nh p kh u t M ... tích diatomite Phú Yên nh m ñ nh hư ng kh s d ng nguyên li u t i Vi t Nam ● Kh o sát v t li u TiO2 nano/Diatomite Ti n hành kh o sát ph TiO2 (Merck) lên diatomite thương m i c a M diatomite Phú...

Ngày tải lên: 31/12/2013, 09:24

Ngày tải lên: 16/01/2014, 19:20

... học cho rằng, lúc họ sản sinh cảm giác thoát xác (OBE) Tiến sỹ Sam Compania thuộc Đại học Southampton (Anh) cho biết, nồng độ carbon dioxide cao có nghĩa hội “thức giấc” người bệnh lớn, bác sỹ cần...

Ngày tải lên: 26/01/2014, 20:20

... Mn-YÆ metalloradical cofactor would have to be reassembled upon each turnover of the enzyme to provide the radical species This process is likely to be slow relative to the kinetics of substrate ... Discussion) Transformants from reintroduction of the nrdF gene via plasmid pOCA2 were selected by their resistance towards chloramphenicol and an acquired tolerance towards the radical scavenger ... the hybrid tac promotor The resulting expression vector, plasmid pOCA2, contained the complete nrdF gene in the right orientation It was first introduced into E coli XL1-Blue to control the isopropyl...

Ngày tải lên: 15/02/2014, 01:20

... been identified (3, 8) Endotoxins: The bacterial endotoxins (lipopolysaccharides), known to exert inflammatory effects, are virtually ubiquitous and have been shown to be present in both indoor ... similarly exposed to O3 (279) It is also noteworthy that individuals vary in their overall functional responsiveness to O3 For a group of 20 to 30 individuals exposed to 160 to 240 mg/m3 (80 to 120 ppb) ... disease were found to be more susceptible to effects of ambient PM on mortality and morbidity In panel studies, asthmatics have also been shown to respond to ambient PM with more symptoms, larger lung...

Ngày tải lên: 17/02/2014, 11:20

... vector was excluded by the DEAE-cellulose chromatographic step of the purification protocol In fact, like for all the arginase variants examined in this study, 0.10–0.15 m KCl was required to ... stability and chromatographic behavior, the conformational change is not expected to be extensive enough to cause gross alterations in the enzyme structure Studies addressed to further define the ... samples for atomic absorption analysis of the wild-type and His145Asn variants In addition to removal of the more weakly bound Mn2+, the lower affinity for that more tightly bound to the protein...

Ngày tải lên: 20/02/2014, 02:21

... 18O2, 18O was incorporated into both products Approximately 0.8 atoms of 18O were incorporated into 3,4-diethoxybenzoic acid (V) and 0.75 atoms into the 4-methoxyacetophenone (III) (Table 2) The ... generated at C1 would add to O2 to form a peroxyl radical, which would then eliminate HOOÆ to yield the a-keto diarylpropane IV, as shown in Fig This mechanism is similar to that reported earlier ... described previously [34,35] This ketone was treated with methyl iodide in the presence of potassium tertiary butoxide and anhydrous dimethylsulfoxide to obtain the a-keto diarylpropane model 1-(3¢,4¢-diethoxyphenyl)-1-oxo-2-(4¢-methoxyphenyl)propane...

Ngày tải lên: 20/02/2014, 23:20

... yielded an enzyme too unstable to purify [30] In E coli, MnSOD mutation of Q146 to Glu generated an apoprotein only, Ó FEBS 2002 whereas mutation to Leu or His reduced activity to less than 10% ... increased sensitivity to the inhibitor azide [24] and also, in the case of human MnSOD, to product inhibition [28], processes thought to be analogous Y34 is hydrogen bonded to Q146 and thus forms part ... concentrators and recovered proteins were stored at )80 °C To obtain pure SOD enzymes with authentic N-termini, the glutathione S-transferase (GST)-fusion proteins (50 lg) were diluted into Tris/HCl...

Ngày tải lên: 21/02/2014, 01:21

... ovarian cystectomy, and total laparoscopic hysterectomy, etc Laparoscopic intervention was completed successfully in all enrolled patients and there was no conversion to exploratory laparotomy None ... factors for patient’s recruitment Carbon dioxide pneumoperitoneum has been shown to produce respiratory and hemodynamic changes due to both CO2 absorption and the effects of increased intraperitoneal ... rate, end tidal CO2 respiratory rate, and pulse oximetry were recorded at each stage The standardized anesthesia monitoring protocol parameters have been found to monitor homeostasis reliably during...

Ngày tải lên: 05/03/2014, 15:20

... Measured at pH 9.0 by stopped-flow spectrophotometry e Catalysis was too rapid and product inhibition too strong for these values to be determined by stopped-flow spectrophotometry f These mutants ... performed together with each library, whereby the plasmid expressing Q143A hMnSOD was used to transform QC774 cells, and this transformant was plated onto a lm paraquat plate so as to obtain ... short-circuit a portion of the respiratory electron flow in organisms, transferring electrons to O2 to generate superoxide [27] Note that paraquat has been previously used as a toxic agent against E coli...

Ngày tải lên: 07/03/2014, 11:20

... changing from 89.12 (A) to )15.3 (B) and N181-Mn2OE2-OE1148 dihedral changing from )96.3 (A) to 167.4 (B)], allowing the OE2 oxygen of Glu148 to serve as a hydrogen bond acceptor to both the NE and ... Hydroxide binding would appear to be an exception to the observation that access to the LPC active site is restricted to neutral molecules [11,27], and a Grotthuss proton relay conduction mechanism ... is positioned to form hydrogen bonds to ligands occupying the axial position on Mn1 (e.g Fig 1, W3) facilitating proton transfers between nonadjacent atoms in the complex These proton transfer...

Ngày tải lên: 08/03/2014, 08:20