Results 61 to 70 of about 271,303 (291)

Evaluación del potencial citotóxico, mutagénico y genotoxico de extracto acuoso y aceite esencial de Carica candamarcensis Hook

Iatreia, 2010
Un estudio previo realizado por el grupo de investigación "Prevención de cáncer" de la Universidad de Nariño demostró el efecto in vitro anti H.
Jaqueline Mena Huertas, Carmen E. Embus Córdoba, Vivian L. Rosero Ruiz, Juliana Navarro, Isabel C. Ortiz Trujillo, María Clara Yepez Chamorro   +5 more
doaj  

This is NASA [PDF]

, 1971
The organization, operations, functions, and objectives of NASA are outlined. Data include manned space flights, satellite weather observations, orbiting radio relays, and new views of the earth and beyond the earth as observed by satellites.

core   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Universal Electronic‐Structure Relationship Governing Intrinsic Magnetic Properties in Permanent Magnets

Advanced Functional Materials, EarlyView.
Permanent magnets derive their extraordinary strength from deep, universal electronic‐structure principles that control magnetization, anisotropy, and intrinsic performance. This work uncovers those governing rules, examines modern modeling and AI‐driven discovery methods, identifies critical bottlenecks, and reveals electronic fingerprints shared ...
Prashant Singh
wiley   +1 more source

Self adeziv yapıştırıcı simanların mutajenik potansiyellerinin salmonella/mikrozom testi ile değerlendirilmesi

European Annals of Dental Sciences, 2015
İndirekt restorasyonların yapıştırılmasında tercih edilen self-adeziv yapıştırıcı simanlar, diş ve ağız dokuları ile uzun süre temas halindedirler. Bu nedenle bu materyallerin biyouyumlulukları hasta ve hekimler için artan bir şekilde önem kazanmaktadır.
Tuğba Toz, Arlin Kiremitçi, Zeliha Aydoğan   +2 more
doaj  

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

Advanced Functional Materials, EarlyView.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani, Shang‐Lin Yeh, Karuna Anna Sajeevan, Mica L. Pitcher, Dawson Alexander, Ratul Chowdhury, Amir Sheikhi   +6 more
wiley   +1 more source

EFECTO DEL OZONO EN LA DEGRADACION DE DISOLUCIONES ACUOSAS DE OXACILINA

Revista CENIC Ciencias Químicas, 2020
La presencia de compuestos farmacéuticos en fuentes de abasto de agua y en ecosistemas constituye riegos potenciales con efectos negativos al medioambiente, y son denominados contaminantes emergentes. Los antibióticos reciben una atención especial por la
Danela Silva, Mayra Bataller, Eliet Veliz   +2 more
doaj  

Isotropic Luminosity Indicators in a Complete AGN Sample

, 2009
The [O IV] 25.89 micron line has been shown to be an accurate indicator of active galactic nucleus (AGN) intrinsic luminosity in that it correlates well with hard (10-200 keV) X-ray emission. We present measurements of [O IV] for 89 Seyfert galaxies from
Aleksandar M. Diamond-Stanic, Antonucci, Armus, Bassani, Bransford, Cannon, Chiaberge, Condon, Dale, de Grijp, Done, Dong, Evans, Feldmeier, Freedman, Fricke, George H. Rieke, Ghosh, Gilli, Grandi, Ho, Ho, Ho, Houck, Iyomoto, Jane R. Rigby, Jones, Kaspi, Kewley, La Franca, Laor, Lavalley, Lawrence, Levenson, Levenson, Levenson, Levenson, Maiolino, Meléndez, Meléndez, Miller, Moran, Mould, Nemmen, Netzer, Nicastro, Oliva, Reynolds, Rigby, Rigby, Risaliti, Sadler, Salvati, Sandage, Sandqvist, Satyapal, Schaerer, Schmitt, Shapley, Slee, Spoon, Steffen, Terashima, Terashima, Tran, Treister, Turner, Turner, Ueda, Veron-Cetty, Vila, Werner, White, Winkler, Yang, Yang, Yaqoob, Yaqoob, Young   +78 more
core   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Enhancing Therapeutic Efficacy of Donepezil, an Alzheimer’s Disease Drug, by Diplazium esculentum (Retz.) Sw. and Its Phytochemicals

Pharmaceuticals
Alzheimer’s disease (AD) is the most common type of dementia and a significant concern to global public health due to the prevalence of aging populations.
Woorawee Inthachat, Boonrat Chantong, Pornsiri Pitchakarn, Chawalit Takoon, Jirarat Karinchai, Uthaiwan Suttisansanee, Piya Temviriyanukul   +6 more
doaj   +1 more source