Results 61 to 70 of about 8,019 (301)

Surface refractivity measurements at NASA spacecraft tracking sites [PDF]

, 1971
High-accuracy spacecraft tracking requires tropospheric modeling which is generally scaled by either estimated or measured values of surface refractivity.
Schmid, P. E.
core  

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

Coastal atmospheric effects on microwave refractivity [PDF]

, 2005
Sharp vertical gradients within thermodynamic profiles in the atmospheric boundary layer (BL) create abrupt changes in refractivity, thereby impacting electromagnetic (EM) wave propagation.
Burgess, E. H., Marshall, R. E., Davidson, K. L., Haack, T., Burk, S. D., Rottier, J. R., Frederickson, P. A.   +6 more
core   +1 more source

Radar quantification, temporal analysis and influence of atmospheric conditions on a roost of American Robins (Turdus migratorius) in Oklahoma

Remote Sensing in Ecology and Conservation, 2019
Radar observations present a way to monitor large, mobile populations across long temporal scales, and are especially valuable when individual scatterers are challenging to count visually.
Matthew S. Van Den Broeke
doaj   +1 more source

An Epigenetic Fate Converter Based on Nuclei‐Targeting Lipid Nanoparticles Drives Neuronal Programming of Stem Cells for Spinal Cord Repair

Advanced Functional Materials, EarlyView.
Schematic illustration of LNP‐MPG nuclei‐targeting delivery of HMW‐FGF2 promoting histone acetylation to regulate the fate of DPSCs and treat spinal cord injury. LNPs components include pHMW‐FGF2 plasmid, DSPC, Dlin‐MC3‐DMA, cholesterol, and PEG2000, and are modified with MPG to form HMW‐FGF2@LNP‐MPG (HLM). HLM nuclei‐targets DPSCs to deliver HMW‐FGF2,
Heng Zhou, Qiang Qin, Xiqin Li, Hanyu Ding, Chun Xu, Yan He, Qingsong Ye   +6 more
wiley   +1 more source

Deciphering the Photopolymerization‐Induced Nanostructures and Interface Formation for Submicrometer Additive Manufacturing

Advanced Functional Materials, EarlyView.
This work reveals the UV‐curing‐induced monomer‐rich domain, oligomer‐rich domain, and entangled oligomer domain. The cured submicron films in stressed state induce interlayer nano‐wrinkle structures during the deposition of the second layer. Stress‐free cured films in relaxed state form non‐diffusive, diffusive and semi‐diffusive interlayer ...
Shouzheng Chen, Yufeng Zhai, Jungui Zhou, Lixing Li, Simon Schraad, Guangjiu Pan, Xuehe Jiang, Sarathlal Koyiloth Vayalil, Rolf A. T. M. van Benthem, Julien R. G. Navarro, Johan F. G. A. Jansen, Mats K. G. Johansson, Peter Müller‐Buschbaum, Stephan V. Roth   +13 more
wiley   +1 more source

Temporal Analysis of Radio Refractivity Variation over Kaduna: Implications for Radio Wave Communication Systems

UMYU Scientifica Journal
Surface radio refractivity is a crucial parameter in studying radio wave communication as it quantifies the bending of electromagnetic waves by atmospheric factors.
Aminu Yaradua Sabiru, Akinbolati Akinsanmi, Florence N Ikechiamaka   +2 more
doaj   +1 more source

Influence of weather variables on atmospheric refractivity over Auchi Town, Edo State, Nigeria

Journal of Applied Sciences and Environmental Management, 2018
In this study, atmospheric variables such as air temperature, relative humidity and atmospheric pressure were evaluated in order to determine the atmospheric refractivity over Auchi town in Edo State, Nigeria using a portable weather monitoring system ...
K.E. Ukhurebor, S.O. Azi, I.C. Abiodun, S.E. Ojiemudia   +3 more
doaj   +1 more source

Nano Borophene as a Programmable 2D Scaffold for Organized DNA Assembly and Long‐Range Energy Transfer

Advanced Functional Materials, EarlyView.
Borophene is introduced as a programmable 2D bio‐interface that organizes DNA through dual boron–sulfur and nucleobase interactions. This molecular architecture enables efficient long‐range nanosurface energy transfer, establishing new design principles for functional nano–bio interfaces and amplification‐free optical biosensing.
Teresa Aditya, Pranay Saha, John M. Sansalone, Shraddha Krishnakumar, Matthew Molinaro, André J. van der Vlies, Nada Maher, Adrienne Griffiths, Zakhro Zakirova, Ketan Dighe, Narayana R. Aluru, Dipanjan Pan   +11 more
wiley   +1 more source

Construction of a Global Atmospheric Refractivity Model for Optical Wavelengths Based on Temporal Evolution Characteristics

Earth and Space Science
Atmospheric refractivity model accuracy is important for refraction correction, starlight refraction navigation, and related optoelectronic applications.
Zhiyan Ding, Pengfei Wu, Wenyue Zhu
doaj   +1 more source