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J Vega

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https://www.readbyqxmd.com/read/28633356/ridesharing-and-motor-vehicle-crashes-in-four-u-s-cities-an-interrupted-time-series-analysis
#1
Christopher N Morrison, Sara F Jacoby, Beidi Dong, M Kit Delgado, Douglas J Wiebe
Uber, the world's largest ridesharing company, has reportedly provided over two billion journeys globally since operations began in 2010; however, the impact on motor vehicle crashes is unclear. Theoretically, ridesharing could reduce alcohol-involved crashes in locations where other modes of transportation are less attractive than driving one's own vehicle while alcohol-affected. We conducted interrupted time series analyses using weekly counts of injury crashes and the proportion that were alcohol-involved in four US cities (Las Vegas, NV; Portland, OR; Reno, NV; San Antonio, TX)...
June 14, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28625352/rna-seq-and-metabolic-flux-analysis-of-tetraselmis-sp-m8-during-nitrogen-starvation-reveals-a-two-stage-lipid-accumulation-mechanism
#2
David K Y Lim, Holger Schuhmann, Skye R Thomas-Hall, Kenneth C K Chan, Taylor J Wass, Felipe Aguilera, T Catalina Adarme-Vega, Cristiana G O Dal'Molin, Glen J Thorpe, Jacqueline Batley, David Edwards, Peer M Schenk
To map out key lipid-related pathways that lead to rapid triacylglyceride accumulation in oleaginous microalgae, RNA-Seq was performed with Tetraselmis sp. M8 at 24h after exhaustion of exogenous nitrogen to reveal molecular changes during early stationary phase. Further gene expression profiling by quantitative real-time PCR at 16-72h revealed a distinct shift in expression of the fatty acid/triacylglyceride biosynthesis and β-oxidation pathways, when cells transitioned from log-phase into early-stationary and stationary phase...
June 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28624376/orthorexia-nervosa-and-eating-disorder-symptoms-in-registered-dietitian-nutritionists-in-the-united-states
#3
Kaylee Tremelling, Lona Sandon, Gloria L Vega, Carrie J McAdams
BACKGROUND: Registered dietitian nutritionists are trained to identify optimal food choices for clients based on medical state and lifestyle. Orthorexia nervosa (ON) is a proposed disorder related to obsessions about eating healthfully. Eating disorders (EDs) are serious mental illnesses with symptoms related to eating, body image, and self-esteem. Both ON and EDs are more common among RDNs than the general population. OBJECTIVE: This study examined the prevalence of ON and EDs in RDNs in the United States and, among this sample, assessed whether the presence of ON symptoms related to symptoms of EDs, including weight, shape, eating, and restraint...
June 14, 2017: Journal of the Academy of Nutrition and Dietetics
https://www.readbyqxmd.com/read/28622587/statistical-characterization-of-noise-for-spatial-standardization-of-ct-scans-enabling-comparison-with-multiple-kernels-and-doses
#4
Gonzalo Vegas-Sánchez-Ferrero, Maria J Ledesma-Carbayo, George R Washko, Raúl San José Estépar
Computerized tomography (CT) is a widely adopted modality for analyzing directly or indirectly functional, biological and morphological processes by means of the image characteristics. However, the potential utilization of the information obtained from CT images is often limited when considering the analysis of quantitative information involving different devices, acquisition protocols or reconstruction algorithms. Although CT scanners are calibrated as a part of the imaging workflow, the calibration is circumscribed to global reference values and does not circumvent problems that are inherent to the imaging modality...
June 7, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28608489/continuous-glucose-monitoring-following-pancreatectomy-with-islet-autotransplantation-in-children
#5
Deborah A Elder, Jose M Jiminez-Vega, Lindsey N Hornung, Ranjit S Chima, Maisam Abu-El-Haija, Tom K Lin, Joseph J Palermo, Jaimie D Nathan
Aim was to determine whether CGM could accurately monitor blood glucose concentration in the immediate postoperative period following pancreatectomy with IAT in children. CGM was used in nine patients undergoing IAT at our institution between April 2015 and September 2016 (eight total pancreatectomy and one subtotal pancreatectomy). MAD and MARD of CGM values compared to time-matched serum blood glucose were calculated during the first 5 days of ICU admission. Goal range was defined as 70-140 mg/dL and out-of-range was >140 mg/dL or <70 mg/dL...
June 12, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/28603089/specific-allergen-immunotherapy-for-the-treatment-of-allergic-asthma-a-review-of-current-evidence
#6
J Dominguez-Ortega, J Delgado, C Blanco, L Prieto, E Arroabarren, M Cimarra, A Henriquez-Santana, J Iglesias-Souto, J M Vega-Chicote, A I Tabar
Asthma is frequently associated with atopy, characterized by the production of specific immunoglobulin E in response to environmental allergens. Currently, two types of allergen immunotherapy (AIT) are used in clinical practice: subcutaneous and sublingual immunotherapy, both accepted as key components of the therapeutic repertoire for allergic rhinitis and conjunctivitis. However, their role in asthma remains controversial. The present document is aimed at providing the clinicians with a review of the evidence on the use of AIT in asthma, focusing on the most relevant aspects of its mechanism of action, its efficacy, and existing data on safety, tolerability, and cost-effectivity, both in pediatric and adult populations...
June 2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28602471/primary-stability-of-tibial-plateaus-under-dynamic-compression-shear-loading-in-human-tibiae-influence-of-keel-length-cementation-area-and-tibial-stem
#7
Thomas M Grupp, Khaled J Saleh, Melanie Holderied, Andreas M Pfaff, Christoph Schilling, Christian Schroeder, William M Mihalko
The objective of our study was to evaluate the impact of the tibial keel & stem length in surface cementation, of a full cemented keel and of an additional tibial stem on the primary stability of a posterior stabilised tibial plateau (VEGA® System Aesculap Tuttlingen, Germany) under dynamic compression-shear loading conditions in human tibiae. We performed the cemented tibial plateau implantations on 24 fresh-frozen human tibiae of a mean donor age of 70.7years (range 47-97). The tibiae were divided into four groups of matched pairs based on comparable trabecular bone mineral density...
May 22, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28601449/fatty-acid-profile-of-goat-milk-in-diets-supplemented-with-chia-seed-salvia-hispanica-l
#8
B Schettino, S Vega, R Gutiérrez, A Escobar, J Romero, E Domínguez, M González-Ronquillo
Chia seed (Salvia hispanica L.) is the greatest known plant source of n-3 α-linolenic acid. The present study evaluated the effects of 3 inclusion levels of chia seed [zero (control); low, 2.7% (CLow); and high, 5.5% (CHigh)] in diets of dairy goats on milk yield and fatty acid profile. Nine Saanen dairy goats in the last third of lactation period, live weight 38 ± 8.7 kg, housed in metabolic cages, were fed iso-proteic and iso-energetic (160 g of crude protein/d and 11 MJ of metabolizable energy/d) diets...
June 7, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28600476/phase-ib-study-of-lumretuzumab-plus-cetuximab-or-erlotinib-in-solid-tumor-patients-and-evaluation-of-her3-and-heregulin-as-potential-biomarkers-of-clinical-activity
#9
Didier Meulendijks, Wolfgang Jacob, Emile E Voest, Morten Mau-Sørensen, Maria Martinez-Garcia, Alvaro Taus, Tania Fleitas, Andres Cervantes, Martijn Lolkema, Marlies Hg Langenberg, Maja J A de Jonge, Stefan Sleijfer, Ji-Youn Han, Antonio Calles, Enriqueta Felip, Sang-We Kim, Jan H M Schellens, Sabine Wilson, Marlene Thomas, Maurizio Ceppi, Georgina Meneses-Lorente, Ian James, Suzana Vega Harring, Rajiv Dua, Maitram Nguyen, Lori Steiner, Celine Adessi, Francesca Michielin, Birgit Bossenmaier, Martin Weisser, Ulrik Lassen
<br /> <p>This study investigated the safety, clinical activity and target-associated biomarkers of lumretuzumab, a humanized, glycoengineered, anti-HER3 monoclonal antibody (mAb), in combination with the EGFR-blocking agents erlotinib or cetuximab in patients with advanced HER3-positive carcinomas.</p> <br />Experimental Design: <br /> <p>The study included two parts: dose escalation and dose extension phases with lumretuzumab in combination with either cetuximab or erlotinib, respectively...
June 9, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28589934/dna-vaccination-protects-mice-against-zika-virus-induced-damage-to-the-testes
#10
Bryan D Griffin, Kar Muthumani, Bryce M Warner, Anna Majer, Mable Hagan, Jonathan Audet, Derek R Stein, Charlene Ranadheera, Trina Racine, Marc-Antoine De La Vega, Jocelyne Piret, Stephanie Kucas, Kaylie N Tran, Kathy L Frost, Christine De Graff, Geoff Soule, Leanne Scharikow, Jennifer Scott, Gordon McTavish, Valerie Smid, Young K Park, Joel N Maslow, Niranjan Y Sardesai, J Joseph Kim, Xiao-Jian Yao, Alexander Bello, Robbin Lindsay, Guy Boivin, Stephanie A Booth, Darwyn Kobasa, Carissa Embury-Hyatt, David Safronetz, David B Weiner, Gary P Kobinger
Zika virus (ZIKV) is an emerging pathogen causally associated with serious sequelae in fetuses, inducing fetal microcephaly and other neurodevelopment defects. ZIKV is primarily transmitted by mosquitoes, but can persist in human semen and sperm, and sexual transmission has been documented. Moreover, exposure of type-I interferon knockout mice to ZIKV results in severe damage to the testes, epididymis and sperm. Candidate ZIKV vaccines have shown protective efficacy in preclinical studies carried out in animal models, and several vaccines have entered clinical trials...
June 7, 2017: Nature Communications
https://www.readbyqxmd.com/read/28586500/implantation-of-implantable-collamer-lenses-after-radial-keratotomy
#11
Bárbara Martín-Escuer, José F Alfonso, José J Esteve-Taboada, Luis Fernández-Vega Cueto, Robert Montés-Micó
PURPOSE: To assess the predictability, efficacy, and safety of posterior chamber phakic implantable collamer lens (ICL) implantation after radial keratotomy. METHODS: In a retrospective non-comparative interventional case series, outcomes in 6 consecutive eyes of 4 patients with residual refraction after radial keratotomy were analyzed after the implantation of ICLs. All of the lenses were implanted to correct the residual refractive error, ranging from -12.00 to +3...
June 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28584132/transposon-mutagenesis-identifies-chromatin-modifiers-cooperating-with-ras-in-thyroid-tumorigenesis-and-detects-atxn7-as-a-cancer-gene
#12
Cristina Montero-Conde, Luis J Leandro-Garcia, Xu Chen, Gisele Oler, Sergio Ruiz-Llorente, Mabel Ryder, Iñigo Landa, Francisco Sanchez-Vega, Konnor La, Ronald A Ghossein, Dean F Bajorin, Jeffrey A Knauf, Jesse D Riordan, Adam J Dupuy, James A Fagin
Oncogenic RAS mutations are present in 15-30% of thyroid carcinomas. Endogenous expression of mutant Ras is insufficient to initiate thyroid tumorigenesis in murine models, indicating that additional genetic alterations are required. We used Sleeping Beauty (SB) transposon mutagenesis to identify events that cooperate with Hras(G12V) in thyroid tumor development. Random genomic integration of SB transposons primarily generated loss-of-function events that significantly increased thyroid tumor penetrance in Tpo-Cre/homozygous FR-Hras(G12V) mice...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28555352/a-new-mhealth-app-for-monitoring-and-awareness-of-healthy-eating-development-and-user-evaluation-by-spanish-users
#13
Isabel de la Torre Díez, Begoña Garcia-Zapirain, Miguel López-Coronado, Joel J P C Rodrigues, Carlos Del Pozo Vegas
Modern-day society has moved towards a more sedentary lifestyle. Advances in technology and changes in habits in our daily lives have led a large part of the population towards a spiralling sedentary lifestyle and obesity. The main objective of this work is to develop and subsequently assess a mobile app, named DietApp, that provides advice about obtaining a healthy diet according to age, clinical history and physical condition. DietApp has been developed for iOS and Android systems, and a survey comprising 7 simple questions enabled the app to be evaluated on a user level by taking into account aspects such as its usefulness and ease of use...
July 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28555172/multimodal-laser-based-angioscopy-for-structural-chemical-and-biological-imaging-of-atherosclerosis
#14
Luis E Savastano, Quan Zhou, Arlene Smith, Karla Vega, Carlos Murga-Zamalloa, David Gordon, Jon McHugh, Lili Zhao, Michael Wang, Aditya Pandey, B Gregory Thompson, Jie Xu, Jifeng Zhang, Y Eugene Chen, Eric J Seibel, Thomas D Wang
The complex nature of atherosclerosis demands high-resolution approaches to identify subtle thrombogenic lesions and define the risk of plaque rupture. Here, we report the proof-of-concept use of a multimodal scanning fiber endoscope (SFE) consisting of a single optical fiber scanned by a piezoelectric drive that illuminates tissue with red, blue, and green laser beams, and digitally reconstructs images at 30 Hz with high resolution and large fields-of-view. By combining laser-induced reflectance and fluorescence emission of intrinsic fluorescent constituents in arterial tissues, the SFE allowed us to co-generate endoscopic videos with a label-free biochemical map to derive a morphological and spectral classifier capable of discriminating early, intermediate, advanced, and complicated atherosclerotic plaques...
2017: Nature biomedical engineering
https://www.readbyqxmd.com/read/28553957/genetic-association-study-of-exfoliation-syndrome-identifies-a-protective-rare-variant-at-loxl1-and-five-new-susceptibility-loci
#15
Tin Aung, Mineo Ozaki, Mei Chin Lee, Ursula Schlötzer-Schrehardt, Gudmar Thorleifsson, Takanori Mizoguchi, Robert P Igo, Aravind Haripriya, Susan E Williams, Yury S Astakhov, Andrew C Orr, Kathryn P Burdon, Satoko Nakano, Kazuhiko Mori, Khaled Abu-Amero, Michael Hauser, Zheng Li, Gopalakrishnan Prakadeeswari, Jessica N Cooke Bailey, Alina Popa Cherecheanu, Jae H Kang, Sarah Nelson, Ken Hayashi, Shin-Ichi Manabe, Shigeyasu Kazama, Tomasz Zarnowski, Kenji Inoue, Murat Irkec, Miguel Coca-Prados, Kazuhisa Sugiyama, Irma Järvelä, Patricio Schlottmann, S Fabian Lerner, Hasnaa Lamari, Yildirim Nilgün, Mukharram Bikbov, Ki Ho Park, Soon Cheol Cha, Kenji Yamashiro, Juan C Zenteno, Jost B Jonas, Rajesh S Kumar, Shamira A Perera, Anita S Y Chan, Nino Kobakhidze, Ronnie George, Lingam Vijaya, Tan Do, Deepak P Edward, Lourdes de Juan Marcos, Mohammad Pakravan, Sasan Moghimi, Ryuichi Ideta, Daniella Bach-Holm, Per Kappelgaard, Barbara Wirostko, Samuel Thomas, Daniel Gaston, Karen Bedard, Wenda L Greer, Zhenglin Yang, Xueyi Chen, Lulin Huang, Jinghong Sang, Hongyan Jia, Liyun Jia, Chunyan Qiao, Hui Zhang, Xuyang Liu, Bowen Zhao, Ya-Xing Wang, Liang Xu, Stéphanie Leruez, Pascal Reynier, George Chichua, Sergo Tabagari, Steffen Uebe, Matthias Zenkel, Daniel Berner, Georg Mossböck, Nicole Weisschuh, Ursula Hoja, Ulrich-Christoph Welge-Luessen, Christian Mardin, Panayiota Founti, Anthi Chatzikyriakidou, Theofanis Pappas, Eleftherios Anastasopoulos, Alexandros Lambropoulos, Arkasubhra Ghosh, Rohit Shetty, Natalia Porporato, Vijayan Saravanan, Rengaraj Venkatesh, Chandrashekaran Shivkumar, Narendran Kalpana, Sripriya Sarangapani, Mozhgan R Kanavi, Afsaneh Naderi Beni, Shahin Yazdani, Alireza Lashay, Homa Naderifar, Nassim Khatibi, Antonio Fea, Carlo Lavia, Laura Dallorto, Teresa Rolle, Paolo Frezzotti, Daniela Paoli, Erika Salvi, Paolo Manunta, Yosai Mori, Kazunori Miyata, Tomomi Higashide, Etsuo Chihara, Satoshi Ishiko, Akitoshi Yoshida, Masahide Yanagi, Yoshiaki Kiuchi, Tsutomu Ohashi, Toshiya Sakurai, Takako Sugimoto, Hideki Chuman, Makoto Aihara, Masaru Inatani, Masahiro Miyake, Norimoto Gotoh, Fumihiko Matsuda, Nagahisa Yoshimura, Yoko Ikeda, Morio Ueno, Chie Sotozono, Jin Wook Jeoung, Min Sagong, Kyu Hyung Park, Jeeyun Ahn, Marisa Cruz-Aguilar, Sidi M Ezzouhairi, Abderrahman Rafei, Yaan Fun Chong, Xiao Yu Ng, Shuang Ru Goh, Yueming Chen, Victor H K Yong, Muhammad Imran Khan, Olusola O Olawoye, Adeyinka O Ashaye, Idakwo Ugbede, Adeola Onakoya, Nkiru Kizor-Akaraiwe, Chaiwat Teekhasaenee, Yanin Suwan, Wasu Supakontanasan, Suhanya Okeke, Nkechi J Uche, Ifeoma Asimadu, Humaira Ayub, Farah Akhtar, Ewa Kosior-Jarecka, Urszula Lukasik, Ignacio Lischinsky, Vania Castro, Rodolfo Perez Grossmann, Gordana Sunaric Megevand, Sylvain Roy, Edward Dervan, Eoin Silke, Aparna Rao, Priti Sahay, Pablo Fornero, Osvaldo Cuello, Delia Sivori, Tamara Zompa, Richard A Mills, Emmanuelle Souzeau, Paul Mitchell, Jie Jin Wang, Alex W Hewitt, Michael Coote, Jonathan G Crowston, Sergei Y Astakhov, Eugeny L Akopov, Anton Emelyanov, Vera Vysochinskaya, Gyulli Kazakbaeva, Rinat Fayzrakhmanov, Saleh A Al-Obeidan, Ohoud Owaidhah, Leyla Ali Aljasim, Balram Chowbay, Jia Nee Foo, Raphael Q Soh, Kar Seng Sim, Zhicheng Xie, Augustine W O Cheong, Shi Qi Mok, Hui Meng Soo, Xiao Yin Chen, Su Qin Peh, Khai Koon Heng, Rahat Husain, Su-Ling Ho, Axel M Hillmer, Ching-Yu Cheng, Francisco A Escudero-Domínguez, Rogelio González-Sarmiento, Frederico Martinon-Torres, Antonio Salas, Kessara Pathanapitoon, Linda Hansapinyo, Boonsong Wanichwecharugruang, Naris Kitnarong, Anavaj Sakuntabhai, Hip X Nguyn, Giang T T Nguyn, Trình V Nguyn, Werner Zenz, Alexander Binder, Daniela S Klobassa, Martin L Hibberd, Sonia Davila, Stefan Herms, Markus M Nöthen, Susanne Moebus, Robyn M Rautenbach, Ari Ziskind, Trevor R Carmichael, Michele Ramsay, Lydia Álvarez, Montserrat García, Héctor González-Iglesias, Pedro P Rodríguez-Calvo, Luis Fernández-Vega Cueto, Çilingir Oguz, Nevbahar Tamcelik, Eray Atalay, Bilge Batu, Dilek Aktas, Burcu Kasım, M Roy Wilson, Anne L Coleman, Yutao Liu, Pratap Challa, Leon Herndon, Rachel W Kuchtey, John Kuchtey, Karen Curtin, Craig J Chaya, Alan Crandall, Linda M Zangwill, Tien Yin Wong, Masakazu Nakano, Shigeru Kinoshita, Anneke I den Hollander, Eija Vesti, John H Fingert, Richard K Lee, Arthur J Sit, Bradford J Shingleton, Ningli Wang, Daniele Cusi, Raheel Qamar, Peter Kraft, Margaret A Pericak-Vance, Soumya Raychaudhuri, Steffen Heegaard, Tero Kivelä, André Reis, Friedrich E Kruse, Robert N Weinreb, Louis R Pasquale, Jonathan L Haines, Unnur Thorsteinsdottir, Fridbert Jonasson, R Rand Allingham, Dan Milea, Robert Ritch, Toshiaki Kubota, Kei Tashiro, Eranga N Vithana, Shazia Micheal, Fotis Topouzis, Jamie E Craig, Michael Dubina, Periasamy Sundaresan, Kari Stefansson, Janey L Wiggs, Francesca Pasutto, Chiea Chuen Khor
Exfoliation syndrome (XFS) is the most common known risk factor for secondary glaucoma and a major cause of blindness worldwide. Variants in two genes, LOXL1 and CACNA1A, have previously been associated with XFS. To further elucidate the genetic basis of XFS, we collected a global sample of XFS cases to refine the association at LOXL1, which previously showed inconsistent results across populations, and to identify new variants associated with XFS. We identified a rare protective allele at LOXL1 (p.Phe407, odds ratio (OR) = 25, P = 2...
May 29, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28549989/overweight-in-elderly-people-induces-impaired-autophagy-in-skeletal-muscle
#16
Yaiza Potes, Beatriz de Luxán-Delgado, Susana Rodriguez-González, Marcela Rodrigues Moreira Guimarães, Juan J Solano, María Fernández-Fernández, Manuel Bermúdez, Jose A Boga, Ignacio Vega-Naredo, Ana Coto-Montes
Sarcopenia is the gradual loss of skeletal muscle mass, strength and quality associated with aging. Changes in body composition, especially in skeletal muscle and fat mass are crucial steps in the development of chronic diseases. We studied the effect of overweight on skeletal muscle tissue in elderly people without reaching obesity to prevent this extreme situation. Overweight induces a progressive protein breakdown reflected as a progressive withdrawal of anabolism against the promoted catabolic state leading to muscle wasting...
May 23, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28543827/estimations-of-linkage-disequilibrium-effective-population-size-and-roh-based-inbreeding-coefficients-in-spanish-churra-sheep-using-imputed-high-density-snp-genotypes
#17
P K Chitneedi, J J Arranz, A Suarez-Vega, E García-Gámez, B Gutiérrez-Gil
In this study, the availability of the Ovine HD SNP BeadChip (HD-chip) and the development of an imputation strategy provided an opportunity to further investigate the extent of linkage disequilibrium (LD) at short distances in the genome of the Spanish Churra dairy sheep breed. A population of 1686 animals, including 16 rams and their half-sib daughters, previously genotyped for the 50K-chip, was imputed to the HD-chip density based on a reference population of 335 individuals. After assessing the imputation accuracy for beagle v4...
May 22, 2017: Animal Genetics
https://www.readbyqxmd.com/read/28541404/m2align-parallel-multiple-sequence-alignment-with-a-multi-objective-metaheuristic
#18
Cristian Zambrano-Vega, Antonio J Nebro, José García-Nieto, José F Aldana Montes
Motivation: Multiple Sequence Alignment (MSA) is an NP-complete optimization problem found in computational biology, where the time complexity of finding an optimal alignment raises exponentially along with the number of sequences and their lengths. Additionally, to assess the quality of a MSA, a number of objectives can be taken into account, such as maximizing the sum-of-pairs, maximizing the totally conserved columns, minimizing the number of gaps, or maximizing structural information based scores such as STRIKE...
May 24, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28540376/on-the-local-order-of-amorphous-la2mo2o6-7
#19
Jesús Vega-Castillo, Gaëtan Buvat, Gwenaël Corbel, Abdelhadi Kassiba, Philippe Lacorre, Alberto Caneiro
The amorphous reduction product of the oxide ion conductor La2Mo2O9 was previously shown to be a good, sulphur-tolerant, anode material for solid oxide fuel cell devices (X. C. Lu, J. H. Zhu, J. Electrochem. Soc., 2008, 155(10), B1053). In this paper, we study the local order of amorphous La2Mo2O6.7 using X-ray absorption spectroscopy analyses and electronic paramagnetic resonance. The extended X-ray absorption fine structure analysis of local arrangements around Mo in La2Mo2O6.7 is first carried out on the basis of strong distortions from three crystalline models of La2Mo2O9, La7Mo7O30 and La2Mo2O7...
June 6, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28534625/reaction-mechanisms-of-the-atomic-layer-deposition-of-tin-oxide-thin-films-using-tributyltin-ethoxide-and-ozone
#20
Charith E Nanayakkara, Guo Liu, Abraham Vega, Charles L Dezelah, Ravindra K Kanjolia, Yves J Chabal
Uniform and conformal deposition of tin oxide thin films is important for several applications in electronics, gas sensing, and transparent conducting electrodes. Thermal atomic layer deposition (ALD) is often best suited for these applications, but its implementation requires a mechanistic understanding of the initial nucleation and subsequent ALD processes. To this end, in situ FTIR and ex situ XPS have been used to explore the ALD of tin oxide films using tributyltin ethoxide and ozone on an OH-terminated, SiO2-passivated Si(111) substrate...
June 9, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
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