Results 111 to 120 of about 1,806,385 (332)

Assessment of soil fertility status in Paderu Mandal, Visakhapatnam district of Andhra Pradesh through Geospatial techniques

Egyptian Journal of Remote Sensing and Space Sciences, 2018
82 soil samples were collected randomly at different land use/cover locations, which includes agriculture, forest, built up area, scrubland and plantation at a depth of 0–30 cm, analyzed for soil pH, electrical conductivity (EC) and presence of nitrogen (
Ramprasad Naik Desavathu, Appala Raju Nadipena, Jagadeeswara Rao Peddada   +2 more
doaj   +1 more source

Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker

Advanced Functional Materials, EarlyView.
Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch, Ankita Shastri, Thomas B. H. Schroeder, Amos Meeks, Shucong Li, Anna V. Shneidman, Michael Aizenberg, Joanna Aizenberg   +7 more
wiley   +1 more source

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

Oceanic passage of hurricanes across Cay Sal Bank in The Bahamas over the last 530 years

, 2021
Tyler S. Winkler, Peter J. van Hengstum, Jeffrey P. Donnelly, Elizabeth Wallace, Nicole d’Entremont, Andrea D. Hawkes, Christopher V. Maio, Richard M. Sullivan, Jonathan D. Woodruff   +8 more
openalex   +2 more sources

Naturally Derived Donor‐π‐Acceptor Compounds for Efficient Long‐Wavelength LEDs/Sunlight‐Induced Polymerization and High‐Precision Multiple 3D Printing

Advanced Functional Materials, EarlyView.
Two novel donor–π–acceptor photoinitiators enable ultrafast long‐wavelength photopolymerization under blue/green LEDs and sunlight. Effective at low intensities and concentrations, they overcome slow kinetics and permit rapid 3D printing via DLW, DLP, and LCD methods.
Ji Feng, Tong Gao, Fabrice Morlet‐Savary, Michael Schmitt, Céline Dietlin, Jing Zhang, Pu Xiao, Frédéric Dumur, Jean‐Patrick Joly, Jacques Lalevée   +9 more
wiley   +1 more source

Synthesis and Antimicrobial Activity of Some New Chalcones of 2-Acetyl Pyridine

E-Journal of Chemistry, 2008
Six new chalcones were synthesised by condensing 2-acetyl pyridine with aldehyde derivatives in dilute ethanolic potassium hydroxide solution at room temperature according to Claisen-Schmidt condensation.
Y. Rajendra Prasad, P. Praveen Kumar, P. Ravi Kumar, A. Srinivasa Rao   +3 more
doaj   +1 more source

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source

Derivative Spectrophotometric Estimation of Ondansetron and Paracetamol

E-Journal of Chemistry, 2006
A simple and reproducible spectrophotometric method, requiring no prior separation, has been developed for the estimation of ondansetron and paracetamol in combined dosage form. First order derivative spectroscopy method is adopted to eliminate spectral
P. Ravi Kumar, M. Murali Krishna, P. Bhanu Prakash, B. Anil Kumar, P. Madhusudhan   +4 more
doaj   +1 more source

Resolving the Inner Structure of QSO Discs by Fold Caustic Crossing Events

, 2012
Though the bulk of the observed optical flux from the discs of intermediate-redshift lensed quasars is formed well outside the region of strong relativistic boosting and light-bending, relativistic effects have important influence on microlensing curves.
Abramowitz, Agol, Agol, Agol, Alcalde, Auger, Bardeen, Bardeen, Barkhouse, Bastian, Bate, Bate, Beckwith, Blackburne, Bogdanov, Bogdanov, Bozza, Burud, Chang, Chavushyan, Chen, Dexter, Dexter, Eigenbrod, Eigenbrod, Elvis, Floyd, Fluke, Fragile, Gaudi, Gaynullina, Ghisellini, Gil-Merino, Hainline, Hewett, Holtzman, Huchra, Irwin, Jaroszynski, Kayser, Khamitov, Kochanek, Kofman, Koptelova, Koptelova, Lawrence, Lineweaver, Morgan, N. I. Shakura, Nityananda, Novikov, P. Abolmasov, Paczynski, Paczynski, Page, Peng, Poindexter, Pooley, Raychaudhury, Schechter, Schechter, Schmidt, Schneider, Shakura, Shakura, Udalski, van Dokkum, Vestergaard, Walsh, Wambsganss, Witt, Woźniak, Yee, Zhou, Zhuravlev, Zimmer   +75 more
core   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source