Results 51 to 60 of about 106,789 (300)

Physio-chemical and microstructural characteristics of selected pozzolanic materials for possible utilization in the cement and concrete production

Nigerian Journal of Technological Development, 2019
Abundant aquatic animal by-products are available in Nigeria which include clam, oyster, rock Snail and periwinkle shells. These are usually dumped on open lands without any economic value after fleshy parts of these animals had been consumed by humans ...
D. O. Oyejobi, S. A. Raji, S. T. Aina, A. Siva
doaj   +1 more source

Sensitivity and Lower Limit Detection Determined of XRF for Copper and Zinc Suspended in lubricated Grease [PDF]

Engineering and Technology Journal, 2009
In this work different weight percent of copper and zinc powders of 20 ìm particlesize were blended carefully with grease , and the final weight of samples are 2 g .
Abdulhadi K. Judran AL-Ogaili
doaj   +1 more source

Archaeometric Analyses of the Building Materials for the Karabük Ovacik Çukur Mosque

Art-Sanat, 2021
This study aims to determine the conservation status of Karabük Ovacık Çukur Mosque building materials using analytical methods. Çukur Mosque is connected to the Ovacık district of Karabük and is 12 km away from the district center.
Murat Eroğlu, Muhammet Bilgen, Ezgin Yetiş, Yusuf Kağan Kadıoğlu, Kıymet Deniz   +4 more
doaj   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Synchrotron XRF Imaging Reveals Manganese Accumulation in the Golgi and Post‐Synapses of Neurons and Enhanced Uptake in Astrocytes

Advanced Science, EarlyView.
Despite widespread exposure, the mechanisms of manganese neurotoxicity remain poorly understood. Using correlative cryogenic fluorescence and synchrotron X‐ray fluorescence imaging techniques, we show that the Golgi apparatus is the primary accumulation site for manganese in both neurons and astrocytes, and that manganese targets the neuronal ...
Ines Kelkoul, Aiyarin Kittilukkana, Luis C. C. Huarte, Hiram Castillo‐Michel, Murielle Salome, Stéphane Roudeau, Pauline Belzanne, Matthieu Sainlos, Noémie Pied, Monica Fernandez‐Monreal, Daniel Choquet, Richard Ortega, Asuncion Carmona   +12 more
wiley   +1 more source

Mapping the Spread of Mercury from Artisanal Mining Activities in Aceh Jaya through Geochemical Surveys

Jurnal Rekayasa Kimia & Lingkungan, 2023
Illegal gold mining carried out using amalgamation techniques produce mercury waste which can then damage the environment and damage the health of residents.
Nurul Aflah, Mulkal Mulkal, Izzan Nur Aslam, Muchlis Muchlis, Hendra Harisman   +4 more
doaj   +1 more source

On the Afterglow of the X-ray Flash of 2003 July 23: Photometric evdence for an Off-Axis Gamma-Ray burst with an Associated Supernova [PDF]

, 2004
Peer ...
Andersen, M.I., Castro Ceron, J.M., Castro-Tirado, A.J., Fransson, C., Fruchter, A.S., Fynbo, J., Gorosabel, J., Greiner, J., Grundahl, F., Hjorth, J., Jakobsson, P., Jensen, B.L., Jorgensen, S.F., Klose, S., Kouveliotou, C., Levan, A., Masetti, N., Moller, P., Palazzi, E., Pedersen, K., Pian, E., Postigo, A., Ramirez-Ruiz, E., Rhoads, J.E., Rol, E., Sekiguchi, T., Sollerman, J., Tanvir, N., Tristram, P.J., van den Heuvel, E.P.J., Vinter, C., Vreeswijk, P.M., Weidinger, M., Wijers, R.A.M.J.   +33 more
core  

Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys

Advanced Science, EarlyView.
This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin, Cheng‐Wei Lee, Nate S.P. Bernstein, Thi Nguyen, Ande Bryan, Eli Cooper, John S. Mangum, Sage R. Bauers, Andriy Zakutayev, Keisuke Yazawa, Prashun Gorai, Rebecca W. Smaha   +11 more
wiley   +1 more source

Tuning Defects in Ni‐Doped Maghemite for Enhanced Solar Driven Oxygen Evolution: Insights From Operando X‐Ray Spectroscopies

Advanced Science, EarlyView.
ABSTRACT Maghemite (γ$\gamma$‐Fe2${\rm Fe}_2$O3${\rm O}_{3}$) is a promising non‐precious‐metal‐containing photocatalyst for water oxidation (OER). Despite being less studied than Hematite, it offers similar corrosion resistance and a favorable band structure, along with higher conductivity and the advantage of an adaptable spinel structure.
Francesco Paparoni, Hélène Magnan, Antoine Barbier, Andrea Zitolo, AndreaDi Cicco, Javad Rezvani, Emiliano Fonda   +6 more
wiley   +1 more source

Pharmaceutico -Analytical evaluation of Mahagandhakam

Journal of Research in Traditional Medicine, 2018
Background: Mahagandhakam is a formulation mentioned in the Grahani Roga Chikitsa (sprue like syndrome) of Bhaishajya Ratnavali which incorporates both ‘Parpati’(thin flakes of mercuric sulphide) and ‘Pottali’ ( consolidated form of mercuric sulphide ...
Varsha Sumedhan, Gopinathan Nair Jai, Kiran Sarma   +2 more
doaj   +1 more source