Results 41 to 50 of about 102,471 (280)

CO2 Reduction on Copper‐Nitrogen‐Doped Carbon Catalysts Tuned by Pulsed Potential Electrolysis: Effect of Pulse Potential

Advanced Functional Materials, EarlyView.
This study demonstrates that pulsed potential electrolysis significantly improves CO2 reduction performance on copper‐nitrogen doped carbon electrodes. The formation of cationic copper sites and metallic clusters as a function of applied intermittent potential leads to notable selectivity changes compared to potentiostatic reduction.
Dorottya Hursán, Janis Timoshenko, Andrea Martini, Hyo Sang Jeon, Eduardo Ortega, Martina Rüscher, Arno Bergmann, Aram Yoon, Uta Hejral, Antonia Herzog, Clara Rettenmaier, Felix T. Haase, Philipp Grosse, Beatriz Roldan Cuenya   +13 more
wiley   +1 more source

Le peuplement de l'Afrique par la chèvre domestique

Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 1996
L'origine de la chèvre en Afrique semble se situer au Moyen-Orient, où l'on trouve encore l'espèce sauvage ancêtre de l'espèce domestique ainsi que de nombreuses preuves archéozoologiques d'un processus de domestication datant de 8500 à 9000 ans.
Didier Bouchel, J.J. Lauvergne
doaj   +1 more source

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source

Fetal transcerebellar diameter to abdominal circumference ratio (TCD/AC) and to femur length ratio (TCD/FL) in the assessment of normal fetal growth

Journal of Dr. NTR University of Health Sciences, 2019
Context: Intrauterine growth retardation (IUGR) is a major risk factor for perinatal mortality and morbidity, and its early detection is useful in deciding frequency of antenatal surveillance, optimal delivery timing, and early neonatal management to ...
Karumanchi Ashok Hussain, Silpa Kadiyala, Amancharla Yadagiri Lakshmi, Manchala Hindumathi   +3 more
doaj   +1 more source

HLA-DPB1 matching status has significant implications for recipients of unrelated donor stem cell transplants. [PDF]

, 2006
Studies in unrelated donor (UD) hematopoietic stem cell transplantations (HSCT) show an effect of the matching status of HLA-DPB1 on complications. We analyzed 423 UD-HSCT pairs. Most protocols included T-cell depletion (TCD).
Madrigal, JA, Marsh, SGE, Mayor, NP, Russell, NH, Shaw, BE   +4 more
core  

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Barriers to Pediatric Sickle Cell Disease Guideline Recommendations. [PDF]

, 2019
National guidelines recommend that providers counsel all patients with sickle cell anemia about hydroxyurea (HU) therapy and screen children with sickle cell anemia annually for the risk of stroke with transcranial Doppler (TCD).
Bardach, Naomi S, Cabana, Michael D, Kanter, Julie, Marsh, Anne M, Rowland, Michael, Stemmler, Peggy, Treadwell, Marsha J   +6 more
core  

The role of TcdB and TccC subunits in secretion of the photorhabdus Tcd toxin complex [PDF]

, 2013
The Toxin Complex (TC) is a large multi-subunit toxin encoded by a range of bacterial pathogens. The best-characterized examples are from the insect pathogens Photorhabdus, Xenorhabdus and Yersinia.
A Sisto, AE Lang, C Gatsogiannis, C McNulty, CP Silva, D Bowen, D Liu, D Zhang, DL Erickson, EF Boyd, Frederick M. Ausubel, G Yang, Guowei Yang, H Gotoh, H Li, I Gendlina, J Soding, JJ Sheets, M Blackburn, M Blackburn, M Sergeant, MC Hares, MJ Landsberg, MR Hurst, N Waterfield, N Waterfield, Nicholas R. Waterfield, NR Waterfield, NR Waterfield, NR Waterfield, R Ffrench-Constant, R Zhao, SC Lee, SK Aoki, SM Tennant, VL Kung, YD Wang, ZC Ruhe   +37 more
core   +3 more sources

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

Advanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez, Melanie Guillén‐Soler, Carlos Herreros‐Lucas, Alejandro López‐Moreno, José Manuel Vila‐Fungueiriño, Antonio Luis Llamas‐Saiz, Karol Strutyński, Manuel Melle‐Franco, María del Carmen Giménez‐López   +8 more
wiley   +1 more source