Results 41 to 50 of about 394,950 (321)

Rb-Sr, Sm-Nd and Ar-Ar isotopic systematics of Antarctic nakhlite Yamato 000593

open access: yes, 2005
P(論文)sotopic analysis of the newly found Antarctic nakhlite Yamato (Y) 000593 yields a Rb-Sr age of 1.30±0.02Ga with an initial ^(87)Sr/^(86)Sr of 0.702525±0.000027, a Sm-Nd age of 1.31±0.03Ga with an initial ε_(Nd) of + 16.0±0.2 and an Ar-Ar isochron ...
Misawa,Keiji   +5 more
core   +1 more source

Lattice Distortion‐Driven Metal Exsolution in Perovskite Oxides

open access: yesAdvanced Science, EarlyView.
This study elucidates the mechanism of lattice distortion‐driven exsolution through a combination of computational simulations and experimental approaches. Lattice distortion facilitates the formation of oxygen vacancies and subsequent metal segregation, thereby enhancing the exsolution behavior.
Yo Han Kim   +5 more
wiley   +1 more source

Krypton isotopes in neutron-irradia ted minerals: use in evaluating samples for 87Rb/87Sr dating.

open access: yesGeofísica Internacional, 1983
Durante la irradiacion con neutrones rapidos, en preparacion para estudios de determinación de edad por 40Ar - 39Ar, isotopos de cripton son producidos de rubidio y estroncio presentes en minerales silicatos naturales. Mediciones de la raz6n 84Kr/86Kr en
J. G. Mitchell
doaj   +1 more source

ProSiteHunter: A Unified Framework for Sequence‐Based Prediction of Protein‐Nucleic Acid and Protein‐Protein Binding Sites

open access: yesAdvanced Science, EarlyView.
This study proposed a unified sequence‐based framework for protein binding site prediction, which adopted a tri‐track semantic multi‐source feature fusion strategy to effectively capture diverse macromolecular interaction sites and further improved the accuracy of antibody‐antigen interaction prediction.
Dongliang Hou   +8 more
wiley   +1 more source

Rb-Sr isotopic systematics of lherzolitic shergottite Yamato-793605

open access: yes, 2001
P(論文)We have undertaken a Rb-Sr isotopic study of the lherzolitic shergottite, Yamato (Y)-793605. The acid-leaching experiment designed to remove secondary Pb contamination during previous work with U-Th-Pb systematics did not significantly affect the Rb-
Misawa,Keiji   +5 more
core   +1 more source

Mixed‐Polymer Hole Transport Layers Reinforce Au‐Anode Top Emitting Perovskite Light Emitting Diodes

open access: yesAdvanced Science, EarlyView.
Au‐anode corrosion is shown to occur rapidly under voltage bias in MAPbI3 perovskite LEDs. Resulting Au+ migration quickly leads to device shorting and unstable emission during constant current driving. We demonstrate that using a simple mixed‐polymer hole transport layer containing polyTPD and PVK can reduce Au‐corrosion and stabilize LED operation ...
James C. Loy   +5 more
wiley   +1 more source

Условия образования, петрохимические и геохимические особенности пород и руд Дельмачикского золоторудного месторождения (Восточное Забайкалье)

open access: yesЛитосфера, 2019
Установлено, что формирование золотоносных флюидно-эксплозивных брекчий Дельмачикского месторождения тесно связано с формированием дайковых поясов, сложенных интрузиями амуджиканского комплекса.

doaj  

Rb-Sr and Sm-Nd dating of olivine-phyric shergottite Yamato 980459: Petrogenesis of depleted shergottites

open access: yes, 2005
P(論文)Martian meteorite Yamato (Y) 980459 has undergone terrestrial weathering in Antarctica. The weathering has affected the Sm-Nd isotopic system. Acid-washed pyroxenes, whole rock and quenched glass samples define a Sm-Nd isochron age of 472±47 (±2σ ...
Misawa,Keiji   +4 more
core   +1 more source

Uranium Doped Gallium Nitride Epitaxial Thin Films

open access: yesAdvanced Electronic Materials, EarlyView.
Uranium was controllably added to gallium nitride using molecular beam epitaxy. The uranium atoms segregated into vertically oriented regions with higher doping levels. Concentrations up to a few percent were achieved without showing significant degradation in the crystalline quality or optical characteristics. Low electrical resistivity was maintained
J. Pierce Fix   +10 more
wiley   +1 more source

Determination of Some Heavy Metals in Serpentinitic Soils and Rocks from Sulaymaniyah / Kurdistan Region of Iraq

open access: yesTikrit Journal for Agricultural Sciences, 2022
The present study aimed to investigated the assessed total content of Arsenics, Ba, Pb, Rb, Sn, Sr, U and V in serpentinitic soils and rocks that wide spread over Penjwin and Mawat area in Sulaymaniyah governorate/ Kurdistan region of Iraq. This research
Bayan Rashid Rahim, Hemin Abubakir Neima
doaj   +1 more source

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