Results 51 to 60 of about 267,019 (291)

A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]

, 2007
The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA, Shields, G. A.
core  

Structure and properties of strontium-doped phosphate-based glasses [PDF]

, 2008
Owing to similarity in both ionic size and polarity, strontium (Sr2+) is known to behave in a comparable way to calcium (Ca2+), and its role in bone metabolism has been well documented as both anti-resorptive and bone forming.
Knowles, Jonathan C., Neel, Ensanya A. Abou, Abou Neel, Ensanya A., Newport, Robert J., Smith, Mark E., O'Dell, Luke A., Morden, Nicola J., N. J Mordan, W. Chrzanowski, O'Dell, L. A., Pickup, David M., L. A O'Dell, Chrzanowski, Wojciech, R. J Newport, E. A Abou Neel, J. C Knowles, Mordan, Nicola J., D. M Pickup, M. E Smith   +18 more
core   +1 more source

Composites of Shellac and Silver Nanowires as Flexible, Biobased, and Corrosion‐Resistant Transparent Conductive Electrodes

Advanced Functional Materials, EarlyView.
Shellac, a centuries‐old natural resin, is reimagined as a green material for flexible electronics. When combined with silver nanowires, shellac films deliver transparency, conductivity, and stability against humidity. These results position shellac as a sustainable alternative to synthetic polymers for transparent conductors in next‐generation ...
Rahaf Nafez Hussein, Tiago Carneiro Gomes, Eliza Ng, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +4 more
wiley   +1 more source

Comprehensive Groundwater Quality Analysis in Chronic Kidney Disease of Unknown Etiology (CKDu) Prevalence Areas of Sri Lanka to Investigate the Responsible Culprit

Journal of Chemistry, 2022
Chronic kidney disease of unknown etiology (CKDu) is a serious health problem in Sri Lanka especially among agricultural communities in dry zone since 19th century. In the present study, several water quality parameters were studied in well water samples
T. D. Fernando, Yohan L. N. Mathota Arachchige, K. V. P. Sanjeewani, R. A. M. T. S. Rajaguru   +3 more
doaj   +1 more source

Spatially Modulated Morphotropic Phase Boundaries in a Compressively Strained Multiferroic Thin Film

Advanced Functional Materials, EarlyView.
ABSTRACT The coexisting rhombohedral‐like (R′, MA) and tetragonal‐like (T′, MC) monoclinic phases in compressively strained bismuth ferrite thin films exhibit exceptional piezoelectric and magnetic properties. While previous studies have largely focused on probing the morphotropic phase boundaries (MPBs) comprising ordered R′/T′ twins, their self ...
Ting‐Ran Liu, Xiangwei Guo, Sajid Husain, Maya Ramesh, Pushpendra Gupta, Darrell Schlom, Ramamoorthy Ramesh, Yu‐Tsun Shao   +7 more
wiley   +1 more source

Experimental investigation of calcium carbonate mineralogy in past and future oceans [PDF]

, 2011
Inorganic marine calcium carbonate formation and mineralogy varies significantly concurrent with the solution composition. During the Phanerozoic, due to oscillations in the seawater composition, this resulted in the formation of either dominantly ...
Bots, Pieter
core   +5 more sources

Ferromanganese nodules and micro-hardgrounds associated with the Cadiz Contourite Channel (NE Atlantic): Palaeoenvironmental records of fluid venting and bottom currents [PDF]

, 2012
Ferromanganese nodule fields and hardgrounds have recently been discovered in the Cadiz Contourite Channel in the Gulf of Cadiz (850–1000 m). This channel is part of a large contourite depositional system generated by the Mediterranean Outflow Water ...
Medialdea, Teresa, Torres, Trinidad de, González, Francisco Javier, Ortiz, José E., Medialdea Cela, Teresa, Merinero, Raúl, Torres Pérez-Hidalgo, Trinidad José, León, Ricardo, Somoza, Luis, Merinero Palomares, Raúl, Martinez Frias, Jesus, González Sanz, Francisco Javier, Lunar Hernández, María Del Rosario, Ortiz Menéndez, José Eugenio, León Buendía, Ricardo, Lunar, Rosario, Somoza Losada, Luis   +16 more
core   +1 more source

Multistage, Self‐Sensing Artificial Muscles With Coordination From Liquid Crystal Elastomer‐Graphene Composite Fibers

Advanced Functional Materials, EarlyView.
Inspired by skeletal muscles’ precision and endurance, CoilLCE integrates a self‐sensing liquid crystal elastomer/graphene artificial muscle with an embedded Joule‐heating copper coil, enabling closed‐loop multistage actuation with programmable intermediate states (strain accuracy of 2%), and antagonistic coordination (32% total strain). These features
Ziyun Zhang, Xuelin Wu, Yinding Chi, Qingya Huang, Yaoye Hong, Antonio Proctor Martinez, Jingxian Wu, Bingzhi He, Cynthia Sung, Shu Yang   +9 more
wiley   +1 more source

Effect of Mechanical Activation and Excess Graphite on the Formation of SrCO3 from Celestite Via Black-Ash Method [PDF]

Iranian Journal of Materials Science and Engineering
Celestite ore, the primary mineral for producing strontium compounds, particularly strontium carbonate, is processed using the black ash method, which involves carbothermic reduction, water leaching, and carbonation.
zahra rezayi, mostafa mirjalili, jalil Vahdati Khaki   +2 more
doaj  

Defining the Estonian strontium isoscape for archeological and paleoecological provenance studies [PDF]

Eesti Arheoloogiaajakiri
Strontium isotope analysis has been used in archeology for about 40 years to study the prov­enance and mobility of ancient humans and animals. The interpretation of strontium isotope compositions in archeological materials requires a reference isotopic ...
Raivo Suni, Kalle Kirsimäe, Eve Rannamäe, Lembi Lõugas, Liina Maldre, Mari Tõrv, Aivar Kriiska, Ester Oras   +7 more
doaj   +1 more source