Results 31 to 40 of about 14,499 (248)

Consequences of Medium‐Pore Zeolite Constraints for Alkene Cracking—The Case of n‐Pentene

Angewandte Chemie, EarlyView.
Alkene cracking in medium‐pore zeolites is governed by a balance of enthalpic and entropic effects. Intrinsic barriers are quantified and shown to be lower than for alkanes due to stabilization of carbenium‐ion‐like transition states. Confinement and extra‐framework aluminum modulate reactivity by tuning transition‐state energetics, providing a ...
Ruixue Zhao, Stefan Schallmoser, Gary L. Haller, Maricruz Sanchez‐Sanchez, Johannes A. Lercher   +4 more
wiley   +2 more sources

Minimizing the residual topography effect on interferograms to improve DInSAR results: estimating land subsidence in Port-Said City, Egypt [PDF]

, 2017
The accurate detection of land subsidence rates in urban areas is important to identify damage-prone areas and provide decision-makers with useful information.
Darwish, Noura, Gaber, Ahmed, Koch, Magaly   +2 more
core   +2 more sources

Sex ratio of Nemacheilus multifasciatus (Hillstream Loach) in the Heval River of Garhwal Himalaya, Uttarakhand, India

Environment Conservation Journal
Nemacheilus multifasciatus is a hillstream loach that contributes to the stability of Himalayan ecosystems and supports local subsistence fisheries. This study aimed to evaluate the sex ratio of the N.
Deeksha Kapruwan, Rajesh Rayal, Kamal Bijlwan, Ruby Pokhriyal, Indra Rautela, Poonam Prabha Semwal   +5 more
doaj   +1 more source

NEW STRATEGY THE FOR DESIGNATION OF THE INTEGRITY PARAMETER IN SBAS POSITIONING IN AIR TRANSPORT [PDF]

Scientific Journal of Silesian University of Technology. Series Transport
The article shows the results of a study on the determination of SBAS satellite positioning integrity parameters as a HPL and VPL protection levels. To this end, a modified algorithm was developed to determine the HPL and VPL protection levels from a ...
Magda MROZIK, Jarosław KOZUBA, Kamil KRASUSKI, Janusz ĆWIKLAK, Mieczysław BAKUŁA, Bilal BELDJILALI   +5 more
doaj   +1 more source

Spiro‑Linked Double Tetraphenylethenes: Solid‐State Emission and Circularly Polarized Luminescence Imaging

Angewandte Chemie, EarlyView.
Two spirobisanthracene‐tetraphenylethene (SBA‐TPE) hybrid compounds are synthesized and their photophysical properties in the solid state reported. Circularly polarized luminescence in aggregates, films and dispersions is evaluated. Circularly polarized luminescence imaging is evaluated over crystals revealing discrimination of different types of ...
José L. Páez, Riccardo Rubino, Giulia Micolonghi, Marco Reale, Alice Sciortino, Victor Blanco, Angel Orte, Carlos M. Cruz   +7 more
wiley   +2 more sources

Validity of very short answer versus single best answer questions for undergraduate assessment [PDF]

, 2016
Background Single Best Answer (SBA) questions are widely used in undergraduate and postgraduate medical examinations. Selection of the correct answer in SBA questions may be subject to cueing and therefore might not test the student’s knowledge.
Hameed, S, Harris, J, Meeran, K, Sam, AH
core   +1 more source

Physical Activity Reduces Hippocampal Atrophy in Elders at Genetic Risk for Alzheimer\u27s Disease [PDF]

, 2014
We examined the impact of physical activity (PA) on longitudinal change in hippocampal volume in cognitively intact older adults at varying genetic risk for the sporadic form of Alzheimer\u27s disease (AD). Hippocampal volume was measured from structural
Durgerian, Sally, Figueroa, Christina Marie, Hazlett, Kathleen, Kandah, Cassandra, Kay, Christina D., Matthews, Monica, Nielson, Kristy A., Rao, Stephen M., Seidenberg, Michael, Smith, J. Carson, Woodard, John L.   +10 more
core   +2 more sources

Non-pharmacological labor pain management and associated factor among skilled birth attendants in Amhara Regional State health institutions, Northwest Ethiopia

Reproductive Health, 2020
Background Healthcare providers have a responsibility to provide pain management support to women during labor. Labor pain management in low and middle income countries primarily relies on non-pharmacological methods, as there is little access to ...
Almaz Aklilu Getu, Simegnew Asmer Getie, Getahun Belay Gela, Eleni Admassu Maseresha, Birhanu Elifu Feleke, Alemtsehay Mekonen Muna   +5 more
doaj   +1 more source

BDS Satellite-Based Augmentation Service Correction Parameters and Performance Assessment

Remote Sensing, 2020
BDS (Beidou Navigation Satellite System) integrates the legacy PNT (Positioning, Navigation, Timing) service and the authorized SBAS (Satellite-Based Augmentation Services) service. To support the requirement of decimeter-level positioning, four types of
Junping Chen, Ahao Wang, Yize Zhang, Jianhua Zhou, Chao Yu   +4 more
doaj   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

Advanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source