Synthesis of porphyrins, chlorins and bacteriochlorins by chemical ..
Title of Talk: On Transitioning Spacecraft Power System Technology to Terrestrial Power Systems for 2020 and Beyond
Amino acid synthesis - Wikipedia
Prof. Carmen Coya is PhD in Physics by the Autonomous University of Madrid and, since 2009, Assistant Professor at the Rey Juan Carlos University of Madrid. Leader of the Organic Optoelectronic Group and head of the “Organic Devices Characterization Lab” (LABCADIO) ( Comunidad de Madrid Lab Network -Ref. 351). Her main research interest is in the organic and flexible electronics context: transport properties of organic semiconductors, cost-effective fabrication methods of optoelectronics devices, novel organic-inorganic hybrid materials for OLEDs and OPVs and graphene based materials for organic electronics, as well as development of alternative low-cost patterning techniques, such as electric micro discharge lithography. She has participated in 21 competitive projects, being leader in 7 of Spanish scope.
Li Guo was born in Liaoning, China in 1985. She received her B.S. in microelectronics (2008) and Ph.D. in micro and solid electronics (2013) from Jilin University. Since 2008, she started a continuous academic project involving master and doctor study under the guidance of Prof. H.-B. Sun in the State Key Laboratory of Integrated Optoelectronics, Jilin University. After received her Ph.D, she joined in Institute of Materials, China Academy of Engineering Physics. Her research is focused on the micro-nanofabrication of graphene-based materials by laser.
Porphyrin and Heme Synthesis and Bilirubin Metabolism
Another application of boron is based on the boron’s ability to be a biomimic for carbon. Boron is an element that is similar but different from carbon, allowing for novelty in biomimicy design. In medicinal chemistry, boron used as a carbon analog in the binding process, but not in terms of reactions, allows for enzyme inhibitors to be tailored and synthesized. Using organoboron compounds opens large fields of unexplored intellectual property.
Other researchers are exploiting the well known strong and reversible complexation between boronic acids and diol (1,2 or 1,3)-containing compounds. By forming transient esters with these kinds of alcohols, boronic acids can act as catalysts or templates for directed reactions. For example, Yamamoto and co-workers discovered that several electron poor arylboronic acids, in particular 3,4,5-trifluorobenzeneboronic acid, catalyzes amidation reactions between carboxylic acids and amines. (8) Aryl boronic acids also catalyze the alkaline conversion of D-glucos to D-fructose. (9)
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Heterogeneous photo-catalysis is an advanced oxidation process (PAO), which has been the subject of numerous studies and applications, particularly using the commercial oxide of TiO2 (P25, Evonik). Zinc oxide (ZnO) has often been considered a valid alternative to TiO2 due to its good opto-electronic, catalytic and photochemical characteristics along with its low cost. In order to improve the photocatalytic performance of ZnO for practical applications, various types of synthetic approaches have been developed, including, among others, the hydrothermal / solvothermal growth method, sol-gel method, ultrasonic assisted method, deposition chemistry in vapor phase, etc. with the aim of preparing ZnO particles with different sizes and morphologies. However, all of these methods require relatively severe reaction conditions such as high temperature, sophisticated techniques, high purity of gases, adjustable gas flow, expensive raw materials, etc. Therefore, it is important to find a simple and cost-effective method for the synthesis of crystalline nano-particles of ZnO. For this reason, in the present work, the ZnO has been synthesized by three different procedures: conventional aqueous precipitation method, hydrothermal method (H) and microwave assisted method (MW). In all three processes, the same material is obtained, hydrocincite [Zn5(CO3) 2(OH)6], which evolves to crystalline ZnO after calcination thermal treatments. We investigated the effect of the calcination temperature, at the same time (2 h), on the optical, textural and structural properties. Photo-catalytic studies were performed using two selected substrates, Methyl Orange and Phenol, as toxic model substrates (one colorant and the other transparent). The catalysts prepared were characterized by several techniques: DRX, SBET, FE-SEM, TEM and UV-Vis (in diffuse reflectance mode).From the results of XRD, it has been possible to establish that a minimum difference between the relative intensities of exposed faces (I100 and I002) is a crucial factor to obtain good photocatalytic properties. This minimum difference is achieved, in our cases by thermal treatments of calcination at 400ºC, 2 h. When this temperature is chosen, there is no appreciable variation between the photocatalytic activities of the oxides of zinc obtained by the three processes, and there are small differences depending on the nature of the substrate chosen, which can be attributed to the textural differences between the oxides. In any case, the obtained zinc oxides show, for each substrate, photo-catalytic activities in the UV that are superior to those presented by the widely used commercial oxide TiO2 (P25) used as reference.
326. Wunderlich G, Schiller E, Bergmann R, Pietzsch H-J. Comparison of the stability of Y-90-, Lu-177- and Ga-68- labeled human serum albumin microspheres (DOTA-HSAM). 2010;37:861-7
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Bioremediation of Petroleum oil Contaminated Soil …
Title of Talk:On Transitioning Spacecraft Power System Technology to Terrestrial Power Systems for 2020 and Beyond
Program | 6th World Congress and Expo on …
Title of Talk: Synthesis, characterization and application of a new Ni-P-carbon nitride nanocomposite
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Title of Talk:Synthesis, characterization and application of a new Ni-P-carbon nitride nanocomposite
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324. Hsiao YM, Mathias CJ, Wey SP, Fanwick PE, Green MA. Synthesis and biodistribution of lipophilic and monocationic gallium radiopharmaceuticals derived from N,N '-bis(3-aminopropyl)-N,N '-dimethylethylenediamine: potential agents for PET myocardial imaging with Ga-68. 2009;36:39-45
Practice Questions | Biochemistry for Medics – Lecture …
Maibelin Rosales is Ph.D. candidate in Materials Science program of University of Chile. She works in the design and synthesis of oxide-metal nanomaterials with controlled morphology and structural dimensionality such as 0D, 1D, 2D and 3D, and photocatalytic studies of these nanomaterials. Before starting her Ph.D. program, she was researcher at Venezuelan Institute for Scientific Research, where developed research in nanomaterials with applications in fields as catalysis, photocatalysis and energy. Currently, she is researcher at Advanced Mining Technology Center associated to research lines for water treatment and desalination processes.
NMR Chemical Shifts of Common Laboratory Solvents …
321. Kiviniemi A, Makela J, Makila J, Saanijoki T, Liljenback H, Poijarvi-Virta P. . Solid-supported NOTA and DOTA chelators useful for the synthesis of 3'-radiometalated oligonucleotides. 2012;23:1981-8
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329. Lankinen P, Maekinen TJ, Poeyhoenen TA, Virsu P, Salomaeki S, Hakanen AJ. . Ga-68-DOTAVAP-P1 PET imaging capable of demonstrating the phase of inflammation in healing bones and the progress of infection in osteomyelitic bones. 2008;35:352-64
Listing of New Books in Electrochemistry
Arsenic is one of the most toxic contaminants found in the environment and can cause severe toxic effects on human health. Arsenic exists in different forms, commonly as As(III) and As(V), being As(III) the most toxic. Various technologies have been utilized for its removal, for example, photocatalytic oxidation of As(III) to As(V)1. Despite that the oxidation of As(III) employing TiO2 as photocatalyst has been reported2,3, there are few studies that show the morphology effect in these processes. Thus, in this work the photooxidation of As(III) has been studied using TiO2 nanotubes and nanoparticles under UVVis irradiation. The reactions were carried out for 1000 µg L−1 of As(III) at neutral pH. The morphology of TiO2 nanostructures obtained by hydrothermal method were studied using TEM, showing a uniform nanotubular morphology with inner diameters between 3 and 4 nm and outer diameters of approximately 8 nm in case of nanotubes, while the nanoparticles showed a diameter in range between 10 and 20 nm. Both solids showed anatase as only crystalline phase, determinated by XRD. High surface areas were obtained by BET analysis. DRS analysis indicated that TiO2 nanostructures absorb in the visible region. The completely oxidation of As(III) to As(V) was confirmed by colorimetric method. The oxidation kinetics of As(III) were enhanced by both nanostructures compared with commercial TiO2, especially in the TiO2 nanotubes system. Under irradiation the systems oxidized 1000 µg L−1 of As(III) almost completely in 2, 10 and 60 min by nanotubes, nanoparticles and commercial TiO2, respectively. The TiO2 nanotubes exhibited superior photooxidation of As(III) to As(V), mainly attributed to the one-dimensional morphology of this nanostructure. Consequently, the photooxidation process of As(III) by these new TiO2 nanostructures could be a novel method for As(III) removal in short times.
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