synthesis and electrochemical preformances

Ngày tải lên: 05/07/2014, 21:20

Ngày tải lên: 22/06/2014, 00:20

Ngày tải lên: 13/04/2013, 11:10

Ngày tải lên: 05/09/2013, 14:58

... in these areas is to arrest land degradation and to improve income and living standards through soil and water conserva- tion, integrated crop and livestock husbandry, agro- forestry, introduction ... makes it difficult to resolve land owner- ship disputes, to obtain agreement on the use and management of common lands, and to introduce improved technology and soil and water conservation methods. ... as agricultural and urban demands expand. Land degradation on sloping lands, including soil fer- tility decline, can be expected to continue. Food crop production will increase and the use of...

Ngày tải lên: 20/12/2013, 19:15

... residues and solvent molecules engaged in ligand recognition and stabilization are drawn as balls -and- sticks and spheres, respectively. The major interactions established between the DHAP inhibitor and ... w1, which establishes two strong hydrogen bonds with the ligand O1 and O1P atoms at 2.5 and 2.8 A ˚ , respectively. Moreover, the ligand is engaged in a number of stabilizing interac- tions with ... Zn 2+ ion and the coordinated solvent molecule are shown as magenta and cyan spheres, respectively. The strictly con- served protein residues forming the metal coordinative sphere and the ligand molecule...

Ngày tải lên: 18/02/2014, 06:20

... transcription factor A and single-stranded DNA-binding protein. EMBO Rep. 3, 451–456. 2836 A. M. James et al. (Eur. J. Biochem. 270) Ó FEBS 2003 Materials and methods Synthesis of [4-((11a S )-7-methoxy-1,2,3,11a-tetrahydro- 5 H -pyrrolo[2,1- c ][1,4]benzodiazepin-5-on-8-oxy)- butyl]triphenylphosphonium ... binding and selective alkyla- tion leading to a depletion of mtDNA in intact cells (Fig. 1). Here we report the synthesis and characterization of a novel mitochondria-targeted alkylating reagent and show ... l M TPMP or ethanol carrier (A and B). MtDNA was isolated from rat liver mitochondria (40 mg protein) and incubated with 500 l M mitoDC-81 for 6 h and then cut with ClaI (C and D). DNA was separated...

Ngày tải lên: 20/02/2014, 11:20

... aim of understanding how PtdIns synthase functions and is regulated. ACKNOWLEDGEMENTS The authors thank A. Zachowski, E. Ruelland and A. Jolliot-Croquin for helpful discussions and advice. This ... fractions rich in ER, where de novo synthesis of PtdIns is most active. Thorough enzymatic characterization of synthesis and exchange has attemptedtounderstandifbothreactionsaremediatedby the ... mechanistically, an inverse synthesis followed by re -synthesis. The work carried out on the rabbit lung and rat liver microsomal enzyme seemed to suggest different enzymes as the pH and divalent cation...

Ngày tải lên: 22/02/2014, 04:20

... 1. Conclusions In the last few years, the study of the synthesis and function of RPs has both expanded our knowledge S. Caldarola et al. Ribosomal protein synthesis FEBS Journal 276 (2009) 3199–3210 ª ... Unfortunately, the results lack coherence, and make it difficult to draw a Fig. 1. Synthesis and turnover of ribosomes. RPs are translated into the cytoplasm and imported into the nucleolus, where ... of the biosynthesis of ribosomes to the requirements of cell growth and differentiation. In addition, a relevant contribution of protein turnover to the regulation of RP synthesis and accumulation...

Ngày tải lên: 07/03/2014, 01:20

... parameters and transport characteristics of Bip-[ 3 H]Pro. Results and Discussion Synthesis, chemical characterization and stability of Bip-Pro Figure 1 shows the structure (Fig. 1A) and the synthe- sis ... existence of two conformations. Fig. 1. Structure and synthesis of Bip-Pro. (A) Bip-Pro structure. (B) Bip-Pro synthesis: mixed anhydride (MA) method. (C) Synthesis of Bip-[ 3 H]Pro. EDC, N-ethyl-N¢-(3-dimethyl ... assessed by TLC, analytical RP- HPLC, MS and NMR, and was found to exceed 98%. As expected for an Xaa-Pro peptide derivative, Bip-Pro exists as a mixture of cis and trans conform- ers in aqueous solution...

Ngày tải lên: 07/03/2014, 05:20

... other methods and arranging from 2 to 3.6 nm. 1. Introduction Size-dependent optoelectronic properties of CdSe quantum dots (QDs) make them ideal candidates for tunable absorbers and emitters ... technology, and biological fluorescent labeling. The properties of QDs are strongly influenced not only by the composition and structure of the matrix, but also by the preparation technique. The band-edge ... tri-n-octylphosphine oxide (TOPO) and trioctylphosphine (TOP) [2], the hydrothermal or solvothermal method [2,3] and the micelle or reverse micelle method [3]. The electrical and optical properties of...

Ngày tải lên: 14/03/2014, 13:20

... tsnl Synthesis and Application of Nanosize Semiconductors for Photoxidation of Toxic Organic Chemicals J.P. Wilcoxon, Nanostructures and Advanced Materials Chemistry Sandia National ... Photooxidation) •Photocatalysis using UV light and nanosize TiO 2 and SnO 2 . •Photocatalysis using visible light and MoS 2 nanoclusters.  Acknowledgement: Div. Of Materials Science and Engineering, Office of Science, ... pesticides, and polycyclic aromatics using nanosize MoS 2 to determine reaction kinetics and final breakdown products. •Investigate alternative, highly stable nanocluster catalysts (RuS 2 , WS 2 ) and...

Ngày tải lên: 14/03/2014, 20:20

... choline- and ethanolamine-free medium in both experiments and simulations, no net synthesis of the major yeast phospholipids, PE and PC, via the Kennedy pathway was observable. Adding choline and ... PC and PE by this route, which might be favored because of its lower energy demand. The additional possibility for PE and PC synthesis further stimulated TAG mobilization to satisfy the demand ... simulations and experimental data for cell density (dotted line and open squares, respectively), glucose concentration (broken line and open circles) and ethanol concentration (full line and filled...

Ngày tải lên: 16/03/2014, 04:20

... adenosine 5¢-tetraphosphate Their chemical synthesis and recognition by human and plant mononucleoside tetraphosphatases and dinucleoside tetraphosphatases Andrzej Guranowski 1 ,El _ zbieta Starzyn ´ ska 1 , ... from human and the narrow-leafed lupin. ppCH 2 ppA and pCH 2 pppA, inhibited the human enzyme with K i val- ues of 1.6 and 2.3 nm, respectively, and the lupin enzyme with K i values of 30 and 34 ... 5¢-tetraphos- phate synthesis from ATP and ADP. Biochim Biophys Acta 869, 107–111. 18 Randerath K, Janeway CM, Stephenson ML & Zamec- nik PC (1966) Isolation and characterization of dinu- cleoside tetra- and...

Ngày tải lên: 16/03/2014, 14:20

... 63 (2009) 777–779 Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application Minsung Jeon ⁎ , Koichi Kamisako Department of Electronic and Information Engineering, ... various methods and metal catalysts via well-known vapor– liquid–solid (VLS) mechanism [8,9]. Moreover, various materials, such as Au, Al, Ga, In, Pb, Sn and Zn [8–15], have been used for synthesis ... SiNWs solar cell using Au thin film and colloidal nanoparticles. The short circuit current (J sc ) and open circuit voltage (V oc ) of the fabricated cells were 0.53 mA/cm 2 and 125 mV, respectively [5]....

Ngày tải lên: 16/03/2014, 15:12

... samples (Fig. 7) also shows b -SiC characteristic absorption band at 791 cm À1 and SiO 2 characteristic absorption bands at 470 and 1000 cm À1 [13,20]. The SiO 2 characteristic absorption peaks ... carbon and CO according to the following reaction: SiOðgÞþ2CðsÞ!SiCðsÞþCOðgÞ (6) SiOðgÞþ3COðgÞ!SiCðsÞþ2CO 2 ðgÞ (7) According to thermodynamics calculation for reactions (6) and (7), the standard ... distilled water and immersed in 5% phosphoric acid for about 30 min at room temperature to adjust the pore diameter and remove the barrier layer at the bottom of nanoholes. 2.2. Synthesis of SiC...

Ngày tải lên: 16/03/2014, 15:21

... inter- national journals and associate editor of IEEE Sensor Journal and has acted as chairman in several Conferences on Materials Science and on Sensors. He G. Sberveglieri et al. / Sensors and Actuators ... of the nanowire lateral sides and apex. Electron diffraction (ED) and analysis of zero-order and higher-order Laue-zones allows precise determination of unit cell and space group. Incoherent imaging ... shown in Fig. 2a, the length and width of the nanowire measure 25.3 ␮m and about 50 nm, respectively. The length and flexibility allows nano-manipulation for removal and positioning over Si-based...

Ngày tải lên: 16/03/2014, 15:25

... Biochem. 270) Ó FEBS 2003 Synthesis and characterization of Pi4, a scorpion toxin from Pandinus imperator that acts on K + channels Sarrah M’Barek 1 , Amor Mosbah 1 , Guillaume Sandoz 2 , Ziad Fajloun 1 , ... Tyr, Asp, and Glu; trityl (Trt) for Cys, Asn, and Gln; pentamethylchroman (Pmc) for Arg, and tert-butyloxycarbonyl (Boc) for Lys. N-a-Amino groups were deprotected by treatments with 18% and 20% (v/v) ... apamin and was shown to be less than 8% of the total binding. Electrophysiology Oocyte preparation. Xenopus laevis oocytes (stages V and VI) were recovered and prepared for cRNA injection and electrophysiological...

Ngày tải lên: 17/03/2014, 10:20

... which (named opgG and opgH) are very similar to the genes mdoG and mdoH of E. coli (Fig. 3). In this organism, mdoG and mdoH form an operon under osmotic control that governs the synthesis of linear OPGs ... transcription-transla- tion of DNA and RNA templates by extracts of Rhodopseudo- monas sphaeroides. Optimization and comparison of template specificity with Escherichia coli extracts and in vivo synthesis. J. Biol. ... digesting pNFR14 with HindIII and KpnI,andinsertedintopRK415 digested with HindIII and KpnI, to give pNFR21 (Fig. 3). A2.0-kbHindIII–EcoRV fragment from pNFR14 was inserted between the HindIII and SmaI sites...

Ngày tải lên: 17/03/2014, 17:20

Ngày tải lên: 17/03/2014, 23:20