Results 51 to 60 of about 31,093 (293)

Atmospheric Trace Metal Deposition near the Great Barrier Reef, Australia

Atmosphere, 2020
Aerosols deposited into the Great Barrier Reef (GBR) contain iron (Fe) and other trace metals, which may act as micronutrients or as toxins to this sensitive marine ecosystem. In this paper, we quantified the atmospheric deposition of Fe and investigated
Michal Strzelec, Bernadette C. Proemse, Melanie Gault-Ringold, Philip W. Boyd, Morgane M. G. Perron, Robyn Schofield, Robert G. Ryan, Zoran D. Ristovski, Joel Alroe, Ruhi S. Humphries, Melita D. Keywood, Jason Ward, Andrew R. Bowie   +12 more
doaj   +1 more source

Spectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alteration [PDF]

, 2009
Over the last ~ 3 years in Gusev Crater, Mars, the Spirit rover observed coherent variations in color, mineralogy, and geochemistry across Home Plate, an ~ 80 m-diameter outcrop of basaltic tephra.
Arvidson, R. E., de Souza, P. A., Jr., Des Marais, D. J., Farrand, W. H., Hurowitz, J. A., Johnson, J. R., Lewis, K. W., McCoy, T. J., Ming, D. W., Ruff, S. W., Schmidt, M. E., Schröder, C., Squyres, S. W.   +12 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Hydrogels Under Superchaotropic Control: Polyoxometalate Stabilization and pH‐Responsive Crosslinking in Cellulose Ether Solutions

Angewandte Chemie, EarlyView.
Superchaotropic binding of Keggin polyoxometalates (POMs) to non‐ionic biopolymers like cellulose ethers (CEs) stabilizes otherwise hydrolytically unstable POMs in aqueous solution and allows conversion of pH‐nonresponsive polymers into pH‐responsive soft materials. The pH‐driven conversion from plenary to lacunary POMs switches superchaotropic binding
Vighnesh B. Lokare, Amina Ledinic, Nina Wehr, Max Hohenschutz   +3 more
wiley   +2 more sources

Elephant‐Skin‐Inspired Porous Cementitious Tiles with Programmable Crack Networks for Passive Cooling

Advanced Materials, EarlyView.
Elephant‐skin‐inspired crack networks are programmed in porous diatomaceous earth (DE)‐cement composites using substrate‐guided, stress‐concentration induced fracture. The resulting crack lattices act as capillary conduits that redistribute water, while the porous matrix stores moisture.
Qingya Huang, Kun‐Hao Yu, Ji Yoon Bae, Yunchan Lee, Dorit Aviv, Shu Yang   +5 more
wiley   +1 more source

Dominance of 2:1 clay minerals in soil potassium across a weathering gradient: Insights from XANES speciation and sequential extraction

Soil & Environmental Health
Potassium (K) is essential in the soil–plant–human continuum, yet its chemical speciation in soils with different weathering stages and in their clay fractions remains poorly understood.
Worachart Wisawapipat, Apinya Saentho, Itsada Bunthong, Piyapas Sricharoenvech, Sompin Mahakot, Wantana Klysubun   +5 more
doaj   +1 more source

Titanium Silicates Precipitated on the Rice Husk Biochar as Adsorbents for the Extraction of Cesium and Strontium Radioisotope Ions

Colloids and Interfaces, 2019
The aim of the work was the development of cheap and effective adsorbents based on titanium silicates deposited on the products of thermochemical processing of rice husk to extract cesium and strontium radioisotopes from aqueous media.
Igor Zhuravlev
doaj   +1 more source

Quick Analysis of Organic Amendments via Portable X-ray Fluorescence Spectrometry [PDF]

, 2019
The determination of heavy metals in soils and organic amendments, such as compost, manure, biofertilizer, and sludge, generally involves the digestion of samples with aqua regia, and the determination of those in the solution using various techniques ...
Ajmal Poley, Fátima, Bello López, Miguel Ángel, Burgos Doménech, Pilar, González Pérez, J.A., López Núñez, Rafael   +4 more
core   +1 more source

Spin‐On SiOx‐Assisted Inkjet Printing for Interdigitated n+ and p+ Poly‐Si/SiOx Contacts in Silicon Solar Cells With Suppressed Unintended Doping

Advanced Materials Technologies, EarlyView.
This work presents an innovative spin‐on SiOx‐assisted inkjet‐printed approach to form localized n+ and p+ poly‐Si/SiOx passivating contacts for high‐efficiency silicon solar cells within a single‐annealing step. The developed process results in a well‐defined interdigitated doping pattern, with unintended doping and cross‐doping concentrations ...
Jiali Wang, Jinlei Ren, Laura Creon, Paula Peres, Rene Chemnitzer, Pierre‐Yves Corre, Sieu Pheng Phang, Daniel Macdonald, AnYao Liu   +8 more
wiley   +1 more source

Solubility of lead silicate glasses in aqueous media

Communications, Faculty Of Science, University of Ankara Series B Chemistry and Chemical Engineering, 1997
Chemical durability of some selected lead silicate glasses were investigated using hydrochloric add and sodium hydroxide as the attacking solutions. Different factors were studied such as the glass composition, concentration of the attacking solution and conditions of the immersion process.The experimental results obtained expressed in terms of the ...
A. A. EL-KHESHEN, F. A. KHALIFA
openaire   +2 more sources