y zhao and h l li electrochemical oxidation of methanol on pt nanoparticles composited mno2 nanowire arrayed electrode appl surf sci 254 2008 3232 3235

Electrochemical Oxidation of Cysteine at a Film Gold Modified Carbon Fiber Microelectrode Its Application in a Flow—Through Voltammetric Sensor

Ngày tải lên : 21/03/2014, 12:18

... 3563 and the conversion of the disulphide into a dithiol group [2] Thioproline (thiazolidine 4-carboxylic acid) is metabolized in vitro by liver mitochondria to produce the ring-opened N-formylcysteine; ... such as high-performance liquid chromatography or flow injection with pulsed electrochemical detection employing a gold working electrode have been published in the literature [15–18] Due to the ... of a portion of the cysteine which diffuses to the electrode surface, and proceeds rapidly as a result of a catalytic effect of the gold Cyclic voltammograms of different concentrations of cysteine...

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báo cáo hóa học:" Disability and HIV/AIDS - a systematic review of literature on Africa" pdf

Ngày tải lên : 20/06/2014, 08:20

... deafness, and some research is available on people with physical, intellectual and visual disabilities There is an appalling lack of data on people with mental health conditions and their risk of infection ... intervention of the Cape Mental Health [16,17], which specializes in rape cases of people with intellectual disabilities The study by Dickman et al is the only one available that assesses the judicial ... deaf and leprosy persons in Nigeria East African Journal of Public Health 2008, 5(2):55-61 Wazakili M: Sexuality and sexual health Needs of young people with physical disabilities Roles of parents...

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Báo cáo hóa học: " High Methanol Oxidation Activity of Well-Dispersed Pt Nanoparticles on Carbon Nanotubes Using Nitrogen Doping" docx

Ngày tải lên : 22/06/2014, 00:20

... chirality This is also helpful in the enhancement of energygeneration efﬁciency for DMFC applications Conclusion The enhanced EC activity of Pt NPs immobilized on N-doped CNTs directly grown on ... only the metallic behavior with a strong donor peak just above the Fermi level [14], unlike undoped tubes which exhibit a variety of metallic and semiconducting behavior depending on their chirality ... inclusive of pyrrolic and pyridinic N 123 Pt agglomerates on one single undoped CNT Pyrrolic N is on the surface of CNTs and pyridinic N is on the node of bamboo-like tubes In fact, pyrrolic...

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báo cáo khoa học: " Absorption and translocation to the aerial part of magnetic carbon-coated nanoparticles through the root of different crop plants" potx

Ngày tải lên : 11/08/2014, 00:22

... 80°C This procedure favours the formation of carboxylic groups on the graphitic shell, which, due to their hydrophobic nature, will contribute to the stability of the final particle suspension In ... together with a small amount of non-coated or partially coated metallic particles These particles (which are not biocompatible) were eliminated by chemical etching, washing the soot with HCl 3M ... period of time Study of the samples taken at the point of application showed that after only 24 hours of exposure to the bioferrofluid, nanoparticles were able to leak into the vascular tissues of...

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Tài liệu Báo cáo Y học: Oxidation of phenols by laccase and laccase-mediator systems doc

Ngày tải lên : 21/02/2014, 01:21

... hand, the laccase/TEMPO system performs the selective oxidation of the hydroxymethyl groups of the substrate to aldehydes Both with laccase alone and with the laccase/HPI system, a limited enhancement ... directly We conclude that the laccase/ TEMPO system, possibly in a mixed solvent, may prove useful for the oxidation of alcohols of limited solubility, that are not directly oxidized by laccase These ... Following a nucleophilic attack of the lone-pair of the alcohol onto the TEMPO-oxoammonium ion, the intermediate adduct is deprotonated at the a-C -H benzylic bond by the base-form of the buffer B...

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Báo cáo Y học: Oxidation of propionate to pyruvate in Escherichia coli Involvement of methylcitrate dehydratase and aconitase pot

Ngày tải lên : 17/03/2014, 10:20

... phosphate, pH 7.5, and 1.3 mM methylcitrate in a ﬁnal volume of mL The racemic mixture of chemically synthesized threo-2methylisocitrate [9] was used to follow the dehydration and the formation ... which acetic acid anhydride was replaced by propionic acid anhydride Propionyl phosphate was converted into propionyl-CoA with the help of phosphotransacetylase from Bacillus stearothermophilus ... 2-methyl-cis-aconitate under acidic conditions This condensation would be less likely with 2-methyl-trans-aconitate, which would lead to a nonplanar six-membered cyclic anhydride A comparable example...

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Báo cáo hóa học: " Steinfield, H., Mooney, H.A., Schneider, F. and Neville, L. E. Livestock in a changing landscape: Drivers" pptx

Ngày tải lên : 21/06/2014, 03:20

... animal food production through local, regional and international food chains that have a turnover of billions of dollars The growth of the dairy industry and the collection of milk from small-scale ... (which are highlighted in most of the chapters), livestock accounts for 9% of Global CO2, then the challenge is to calculate the balance between carbon emissions and carbon sequestration in livestock ... desertification The authors of the chapter not explain that processes of desertification in Inner Mongolia are historical and have little to with the present-day impact of livestock production The chapter...

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Báo cáo y học: "Regulating the immune system: the induction of regulatory T cells in the periphery Jane H Buckner1 and Steven F Ziegler2" pot

Ngày tải lên : 09/08/2014, 01:24

... established in the gut-associated lymphoid tissue, which consists of Peyer’s patches, intraepithelial lymphoid cells, and scattered lymphoid cells in the lamina propria Several lines of evidence have ... the periphery Our understanding of regulation is now expanding with the identification of peripherally generated Tr1, Th3 and TR cells The implication is that these cells may play a role in human ... activated, and will recruit other T cells and other inflammatory cells and mediators to the site As the response becomes mature, a group of regulatory T cells will develop locally as a result of the local...

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Báo cáo y học: "Serum-dependent transcriptional networks identify distinct functional roles for H-Ras and N-Ras during initial stages of the cell cycle" doc

Ngày tải lên : 09/08/2014, 20:20

... Additional data file 1) showed a high proportion of loci functionally related to processes of cellular signal transduction, transcription and primary metabolism Although similarly treated H- ras-/- ... possibility of a preferential functional involvement of N-Ras with the immediate-early cellular responses to serum stimulation and of H- Ras with the cellular responses related to growth and proliferation ... cellular functions, including immune defense responses, apoptosis, transcription and MAPK signaling, and to repression of loci functionally related to cell cycle control, cell adhesion and insulin...

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Báo cáo y học: "Direct electrochemical analyses of human cytochromes b5 with a mutated heme pocket showed a good correlation between their midpoint and half wave potentials" doc

Ngày tải lên : 10/08/2014, 05:21

... L I V A LM Y R L Y V V V A LM Y R I Y L V V A LM Y R L Y L A V A LM Y R L Y V A V A LM Y R L Y L F VA L I YH L Y V L LGF L Y RY Y I L I G F L Y RH F V I VALVYY L I LM L GV A Y Y L L V LAY L LYT ... N T N K SAWL V H N G P EN FW I I RD N N KQN L I I LHH KV YD L T K LHH KV YD L T K LHH KV YD L T K LHH KV YD L T K LHH KV YD L T K LH Y KV YD L T K I H GR V Y D V T R I H GR V Y D I T R I GN K ... containing 0.5 mM EDTA) and disrupted by the treatment with lysozyme (final, mg/mL) and DNase (final, 50 μg/mL) in the presence of mM of phenylmethylsulfonyl fluoride followed by sonication on...

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Báo cáo y học: "A Comparison of Immuncapture Agglutination and ELISA Methods in Serological Diagnosis of Brucellosis"

Ngày tải lên : 25/10/2012, 10:56

... depending on the nature of anti-globulin This situation has an effect on the sensitivity, specificity and ultimately applicability of the method (12,14) ELISA tests are relatively costlier tests ... brucellosis is the smooth lipopolysaccharide structure of the antigen cell surface Brucella, which is a gram negative bacterium, has a lipopolysaccharide structure in the outer membrane in S colony ... brucella infection Among the tests that can be used alone or together with other tests, immuncapture agglutination and ELISA Ig M and Ig G tests, which are based on sandwich ELISA system, are standardized...

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Báo cáo y học: "Foramen Magnum Arachnoid Cyst Induces Compression of the Spinal Cord and Syringomyelia: Case Report and Literature Review"

Ngày tải lên : 25/10/2012, 11:00

... size appeared slightly smaller than that before surgery Although the compression on the cerebellar tonsil, pons and cervical spinal cord was reduced, the size of the syrinx was still the same as ... that the wall of the cyst was composed of fibrous tissue but without epithelial cells; the diagnosis of arachnoid cyst was made (Figure 2) During three months of follow-up, the condition of this ... Delavellle J, et al Symptomatic syringomyelia occurring as a late complication of posterior fossa medulloblastoma removal in infancy in a boy also suffering from scaphocephaly Childs Nerv Syst...

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Báo cáo y học: "Effects of Flurbiprofen on CRP, TNF-α, IL-6, and Postoperative Pain of Thoracotomy"

Ngày tải lên : 25/10/2012, 11:10

... resection of the pleura or chest wall, and patients with hemorrhagic diathesis or medication of anticoagulants, corticosteroids, and acetylsalisilic acid The surgical approach in all the patients ... respiratory mechanics following thoracotomy J R Coll Surg Edinb 1990; 35:144–50 26 Shulman M, Sandler AN, Bradley JW, et al Postthoracotomy pain and pulmonary function following epidural and systemic ... Saito T, Shigemitsu Y, et al Relation between tumor necrosis factor alpha and interleukin beta producing capacity of peripheral monocytes and pulmonary complications following oesophagectomy Br J...

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Báo cáo y học: "Parvovirus B19 Nonstructural Protein-Induced Damage of Cellular DNA and Resultant Apoptosis"

Ngày tải lên : 25/10/2012, 11:18

... Chapter and the H Thomas and Dorothy Willits Hallowell Endowment Conflict of Interest The authors have declared that no conflict of interest exists References 10 11 12 13 14 Anderson MJ, Jones SE, ... necessary for optimal induction of apoptosis induced by NS1 expression, since inhibition of these pathways significantly decreases apoptosis in transfected cells It is likely that NS1 additionally ... immunoprecipitation HepG2 cells were transfected with the GFP/NS1 expression vector or GFP vector alone and metabolically labeled with 32P-thymidine triphosphate during the protein expression phase of the...

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Báo cáo y học: "Ultra-low microcurrent in the management of diabetes mellitus, hypertension and chronic wounds: Report of twelve cases and discussion of mechanism of action"

Ngày tải lên : 26/10/2012, 09:39

... examination, the patient was afebrile with stable vital signs, and femoral pulses were present bilaterally Popliteal and pedal pulses were absent bilaterally with poor capillary refill The left foot ... reasonable to use on patients with diabetes mellitus, hypertension and chronic wounds, to test whether delivering electrons to the body might help eliminate underlying oxidative stress, stabilize ... Acampora R, La Marca C, Giunta R, Lucarelli C, Paolisso G, Ceriello A, Giugliano D Glutathione reverses systemic hemodynamic changes by acute hyperglycemia in healthy subjects Am J Physiol 1995;...

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Báo cáo y học: "Mechanical complications and reconstruction strategies at the site of hip spacer implantation"

Ngày tải lên : 26/10/2012, 09:53

... mechanical properties of hip spacers or reduces the rate of mechanical complications Moreover, it is still unclear whether the insertion of a metallic endoskeleton has a negative influence on the pharmacokinetic ... N and nails at 1275 N, respectively) To our knowledge, there are no clinical data available that have demonstrated that the insertion of a metallic endoskeleton significantly improves the mechanical ... a hip spacer, enhance the fixation techniques onto the proximal femur and evaluate the effect of a metallic endoskeleton on the pharmacokinetic properties of the interim prosthesis Conflict of...

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Báo cáo y học: " Polysaccharides from the root of Angelica sinensis protect bone marrow and gastrointestinal tissues against the cytotoxicity of cyclophosphamide in mice

Ngày tải lên : 02/11/2012, 10:19

... MW, Li Y, Matsui H, Cho CH Angelica sinensis modulates migration and proliferation of gastric epithelial cells Life Sci 2001; 68: 961-8 Ye YN, So HL, Liu ES, Shin VY, Cho CH Effect of polysaccharides ... (Fig 4B and 4C respectively) CY is the non-cytostatic drug that acts non-specifically on both tumor cells and normal healthy cells with high proliferating capacity like immune cells and GI tissues ... with polyclonal rabbit anti-human von Willebrand factor antibody at dilution of 1:500 in a humidified chamber overnight at °C Endothelial cells of blood vessel were then visualized by applying...

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Báo cáo y học: "Multivariate explanatory model for sporadic carcinoma of the colon in Dukes’ stages I and IIa"

Ngày tải lên : 03/11/2012, 11:34

... variables of the original model, considering the variables HDL, VLDL, and LDL in their versions with imputed values HDL-1, VLDL-1 and LDL-1 The coefficients obtained by means of non-conditional LR ... from the data AGE-age in years; TC- total cholesterol; HDL-high density lipoprotein; LDL-low density lipoprotein; VLDL-very low density lipoprotein; TG-triglycerides; AP-alkaline phosphatase ... AGE-age in years; TC- total cholesterol; HDL-high density lipoprotein; LDL-low density lipoprotein; VLDL-very low density lipoprotein; TG-triglycerides; AP-alkaline phosphatase (* significant values)...

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Báo cáo y học: "Different effect of exercise on left ventricular diastolic time and interventricular dyssynchrony in heart failure patients with and without left bundle branch block"

Ngày tải lên : 05/11/2012, 11:32

... patients with wide QRS during stress (22) Furthermore, exercise LV dyssynchrony may play a more important role in the pathophysiology of left ventricular remodelling than baseline LV dyssynchrony (23) ... with these results and underline the highly dynamic nature of mechanical ventricular dyssynchrony in heart failure patients with normal QRS duration By characterizing mechanical interventricular ... ventricular diastole is closely related to the phenomenon of mechanical dyssynchrony These findings may further explain why patients with normal QRS duration may benefit from cardiac resynchronization...

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Nhóm Ngề-Y.cầu của ng.L.động

Ngày tải lên : 31/05/2013, 00:21

... Những nghề thợ - Những nghề kĩ thuật - Những nghề thuộc l nh vực văn h c nghệ thuật - Những nghề thuộc l nh vực nghiên cứu khoa h c Dưới cách chia nhóm nghề khác: Dựa vào y u cầu nhóm nghề, h c ... h c sinh tự đánh giá phẩm chất tâm l l c thân mà chọn cho h ớng đi, l a chọn nghề nghiệp tương lai phù h p Trong trường h p h c sinh không tự đánh giá mình, định h ớng nghề nghiệp tương lai, giáo ... Dấu hiệu Người Nghệ thuật Người Người Phân loại nghề theo y u cầu nghề người lao động Các nghề chia thnh nhóm nghề sau: - Những nghề thuộc l nh vực h nh - Những nghề tiếp xúc với người - Những...

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