synthesis thermodynamic behavior and biological properties of metal ion specific sequestering agents for iron and the actinides
DESIGN, SYNTHESIS AND PROPERTIES OF METAL COMPLEXES AND COORDINATION POLYMERS FOR 2+2 PHOTO CYCLOADDITION REACTIONS
... describe the background and review the current literature to understand the rest of chapters The importance and inspiration of the work also has been provided and the scope of the dissertation will ... cycloaddition reaction Figure 1- 12 Photo cycloaddition of Ag+ metal complex assisted 1-24 by AgAg interactions and formation of AgC interaction Figure 1- 13 Photo transformation of 1D to 2D CP and ... representation of a MOF structure 1-5 Introduction Chapter Robson pioneered the studies of CPs on the synthesis and characterization of different dimensional CPs with various connectivity and topologies...
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Báo cáo khoa học: Structural aspects and biological properties of the cathelicidin PMAP-36 pot
... at the proform level of the cathelicidin [21], and this structure is likely to persist in the mature peptide Indeed, it may explain the different activity spectra and potencies observed for the ... amidation reaction, by analogy to other cathelicidins such as SMAP-29, BMAP-27 and BMAP-28 The amidated form would further increase the charge of the dimer to +28 (see Table 1) Here we further ... only the highly cationic helical region, allowing us to discern the effect of the hydrophobic tail also The two peptides were synthesized in good yields, and air oxidation of PMAP-36(1–35) in the...
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chemical and biological properties of food allergens
... include the investigation and determination of radionuclide contamination of food, exploring possibilities for the decontamination and application of radionuclides S-35 and P-32 by incorporation ... chlorella for inducing mutations, the evaluation of properties of enzymes and applications of enzyme preparation in the food industry and in food analysis, food allergens, the application of immunological ... the continuation of type I allergy The sites in which the infiltration forms may include bronchi, skin, and various parts of the gastrointestinal tract 8 Chemical and Biological Properties of...
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Design and synthesis of novel metal complex protein conjugation agents for applications in bio imaging
... of which is the monofunctionalization of DOTA, followed by the combination of an imaging group and a cell targeting moiety via amide bond formation The other method is the synthesis of a tailored ... diacetate (10) 40 4.7 Synthesis of Folate-NHS (11) 41 4.8 Synthesis of Folate-DOTA (13) 42 4.9 Synthesis of Folate-DO3tBu (12) 43 4.10 Synthesis of Mannich Salt (14) 46 4.11 Synthesis of Bis-disulfide ... somatostatin-DOTA conjugates require conjugation via a tailored linker The synthesis of this linker moiety, the functionalization of the metal- DOTA complex and the conjugation approach is thoroughly investigated...
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gas sensing properties of metal - organics derived pt dispersed - tio2 thin film fired in nh3
... crystallinity of TiO The ESCA profiles for the film fired in 3% H 2rAr indicated that Pt exists as Pt metal and Pt 2q, and Ti as almost all Ti 4q Fig shows the SIMS profiles of the thin films ... in NH The increase of the temperature at which the degradation occurs is advantageous to doping of other metal component and control of microstructure or crystalline phase in the noble metal- TiO ... fired in NH , the resistance of the TiO –Pt film was compared with that of the TiO film Although the resistance of 1H is smaller than that of 2H, the resistance of 1a is larger than that of 2a It...
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Báo cáo khoa học: Biological role of bacterial inclusion bodies: a model for amyloid aggregation potx
... system to study the determinants of prion formation On the other hand, bacterial IBs would be an ideal system for the production of significant amounts of infectious proteins ready to use for cell biology ... aggregation properties [21,70] or the control of polypeptide solubility in biological environments by the thermodynamic [71] and kinetic stability of proteins [72] In addition, the possibility of ... bacterial aggregates as intriguing models for the analysis of protein–protein interactions in the context of amyloid and prion diseases Dynamics of IB formation and biological activity Intracellular...
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new technology of metal oxide thin film preparation for chemical sensor application
... during the process of interruption The prolongation of film growth on the “extra” interface involves a new nucleation of the metal oxide film, the formation and growth of a film island structure and, ... decrease in the roughness of the film surface Table Sensor sensitivity (S) in the presence of 10 ppm of ethanol as a function of the working temperature and number of interruptions of the deposition process ... one of the key factors to enhance the gas sensing properties of metal oxide sensors, the aim of this paper is to study the influence of interrupting the deposition process on the sensing properties...
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Tài liệu Báo cáo Y học: Short peptides are not reliable models of thermodynamic and kinetic properties of the N-terminal metal binding site in serum albumin doc
... solution by the rest of the protein There is no correlation between the complex stability and the rate of its formation The Ni(II) for Cu(II) exchange rates for peptides are of the order of 10)6 ... reaction of acid decomposition of complexes, studied in detail for the Ni(II) complex of GGH [36,39] The reason for this is the common slow step of the rearrangement of Ni(II) ion, between the ... used for interpretation and modelling of Cu(II) and Ni(II) transport by albumins On the other hand, the direct thermodynamic and kinetic characterization of Ni(II) binding at site I in HSA and...
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Metal complexes of n (7 hydroxyl 4 methyl 8 coumarinyl) amino acid, n (2 pyridylmethyl) amino acid and related ligands synthesis, structural, photophysical and gelation properties
... unit of the anion in IIA-5 The atoms with the extension ‘A’ are related by the symmetry x+1, -y+1, -z+1; (b) The schematic representation of the 1D polymeric anion in IIA-5 The Mn(II) cation and ... understanding of intermolecular interactions in the context of crystal packing and in the utilization of such understanding in the design of new solids with desired physical and chemical properties. 5 ... structure The amine hydrogen and the oxygen in the ligands are expected to form hydrogen bonds with the neighboring molecules The chiral center of the amino acid and the diversity of the substituent...
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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... in-situ formation of SiO2 vapors via reaction of SiO vapors with O2 leads to the formation of SiO2 nanoclusters, which consequently results in the formation of large nanowires The present simple and ... considered as the evidence for the operation of the VLS model [26] But no metal particles were found at either end of the nanowires in the present study as confirmed by SEM and TEM results Therefore, ... whereas the latter is based on the three-step mechanism involving (i) diffusion of Si/SiOx vapors into the metal particles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation...
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Báo cáo Y học: The Fe-only nitrogenase and the Mo nitrogenase from Rhodobacter capsulatus A comparative study on the redox properties of the metal clusters present in the dinitrogenase components doc
... preferred the use of the rapid and high-yield one-column method (Q-Sepharose) also for the purification of the MoFe protein in the present study Determination of nitrogenase activity and protein ... cluster environment or to protonation/deprotonation effects in the cluster itself pH-based signal shifts and the occurrence of additional signals have been reported for the cofactor of the MoFe proteins ... those arising from the oxidized states of the P-cluster and the FeFeco Such investigations will include the development of a procedure for the isolation and stabilization of a hexameric FeFe...
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gas - sensing properties of tin oxide doped with metal oxides and carbon
... reactions of LPG These reasons can enhance Reactions (3) and (4) Additionally, the consumption of the adsorbed oxygen can affect the electrical properties of the MWCNTs [36,37], and the electrical ... with the increasing amount of LPG oxidation More LPG oxidation caused the introduction of more electrons into the SnO2 surface and the film became less resistive Fig 5e depicts the variation of ... surface and the film became less resistive Fig 3e depicts the correlation between the ethanol gas concentration and the response of the (1 wt%) PtO2 doped SnO2 sensor It seems that the correlation...
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synthesis and optical properties of colloidal tungsten oxide nanorods
... we suggest that the UV emission of nanorod samples in this work might correspond to the band-toband transition The blue emission of nanorods might originate from the presence of oxygen vacancies ... COMMUNICATIONS Comparing the intensities of the (010) and (014) peaks of the sample with those of the bulk W18O49, it was found that the relative intensity of (010) has been dramatically ... oxides, and we are currently investigating the generality of our method for the preparation of soluble 1-D nanostructured metal oxides Acknowledgment This work was supported by the NRL Program of the...
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synthesis, electrical measurement, and field emission properties of a-fe2o3 nanowires
... along the [110] direction Therefore, the oxidation rate difference and the selective directional growth are probable reasons for the formation of a-Fe2O3 NWs A schematic graph of the formation of ... by the diffusion of oxygen atoms on the surface defects of the iron film During the thermal process, the oxygen molecules diffuse into the iron film between the iron atoms and form Fe–O bonds The ... 106 34 A a The popular density of the NWs per cm2 b Rtotal: the resistance of the total NWs in a unit cm2 Fig A schematic graph of the formation of the a-Fe2O3 NWs in thin and thick iron Fig (a)...
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synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods
... covering the nanorods is in amorphous The thickness of the amorphous coatings and the size of the nanoclusters adhering to the nanorods are much smaller, compared with the diameter and size of the ... The inset shows the morphology of the annealed sample and the area for recording EDX spectrum other iron oxides because of the limited difference between Fe 2p binding energies in different iron ... Considering the effects that could reduce the total magnetization, including the formation of iron oxides and atomic disorder in small particles, the actual elemental 157 Fig M vs H plot for the as-prepared...
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Báo cáo khoa học: Expression and characterization of cyanobacterium heme oxygenase, a key enzyme in the phycobilin synthesis Properties of the heme complex of recombinant active enzyme potx
... 7.0) The ferrous form was made by the addition of dithionite (150 lM) under anaerobic condition and the spectrum was recorded after 15 of incubation The oxy form was produced by the addition of ... initiates the reaction, the reaction is almost at a standstill from to 15 after addition of NADPH Shift of the Soret maximum to 410 nm and appearance of the 534 and 573 nm bands in the visible region ... absorption maximum of the Soret band with a small absorption coefficient (Table 1) On the other hand, relative intensities of the 498 and 630 nm bands compared with those of the 575 and 535 nm bands...
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Báo cáo Y học: Synthesis, conformational analysis and biological activity of cyclic analogs of the octadecaneuropeptide ODN Design of a potent endozepine antagonist pot
... possible, additional secondary information from NOE data was used to reduce the number of solutions A range of ^ 308 was used for defining the upper and lower angle of the constraints The structures ... residue is required for the full activity of the peptide [12] These data led us to synthesize cyclic analogs of OP and to use the N- and C-terminus for cyclization in order to keep the side chains ... between the C ¼ O of Pro2 and the NH of Leu4 to form a ring associated with a standard g turn, and (c) a hydrogen bond (i, i 3) between the C ¼ O of Leu5 and NH of Lys8 associated with the average...
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Báo cáo " Synthesis and thermoelectric properties of La(Fe1-xSix)13 compounds (x = 0.12, 0.14 and 0.15) " pptx
... dependence of the thermal conductivity of La(Fe1-xSix)13 compounds The thermoelectric properties of La(Fe1-xSix)13 compounds at room temperature are listed in Table 1, together with the data of other ... negative thermopower, indicating the n-type nature of these materials At room temperature, the thermopower of all the compounds is α = - 5.5 µV/K A growth of the peak is found below TC The difference ... dependence of the thermopower of La(Fe1-xSix)13 compounds Fig shows the temperature dependence of the thermopower (α) in the La(Fe1-xSix)13 (x = 0.12, 0.14 and 0.15) compounds All the compounds...
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controlled synthesis and gas sensing properties of hollow sea urchin like
... by the adsorption and desorption of gas molecules on the surface of the sensing structure To understand the origin of the difference in the sensing performance of the three kinds of sensors, the ... ethanol and (f) hydrogen of different concentrations at 350 ◦ C and relative humidity of 5–18% Table The linear equations and correlation factor for the chart of the logarithm of response of the ... of the logarithm of response of the three kinds of sensors versus the logarithm of gas concentration The linear equations and correlation factor, R, were given in Table The value of ˇ for the...
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cross plane electronic and thermal transport properties of p type la0.67sr0.33mno3 lamno3 perovskite oxide metal semiconductor superlattices
... measured the amplitude and phase shift of the pressure signal The measured signal was then related to thermal properties of the sample using a heat conduction model.27 A detailed discussion of the ... cation transitions The cation vacancies are responsible for the ferromagnetic as well as the semiconducting behavior. 14 LMO has a band gap of Eg ¼ 1.1 eV and electron affinity of 4.4 eV.15 The ... height of the superlattice composition investigated is too high for thermoelectric applications near room temperature but possibly suitable for elevated temperature operation On the other hand, the...
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