Results 71 to 80 of about 7,532,149 (298)
Yankuang ceshi, 2020 BACKGROUND The Nanyangtian scheelite deposit is an important skarn scheelite deposit in Yunnan Province, which is located in Laojunshan W-Sn deposit area, Southeast Yunnan.
WANG Zhong-qiang +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad +3 more
wiley +1 more source
(Table 3) Re-Os isotope ratios of abyssal peridotites from ODP Hole 209-1274A
, 2006 TMA=1/lambda ln (((187Os/188Os)sample-(187Os/188Os)chond) / ((187Re/188Os)sample-(187Re/188Os)chond]+1). TRD=(minimum) time of rhenium depletion calculated using a mean present-day chondritic value 187Os/188Os=0.1278 from Walker et al. (2002, doi:10.1016/
Harvey, Jason +11 more
core +1 more source
Advanced Functional Materials, EarlyView.A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy +5 more
wiley +1 more source
Development ICP-MS isotope dilution preconcentration techniques for determination of platinum group elements in volcanic rocks [PDF]
, 1999 Understanding PGE geochemistry in low abundance (i.e. sub ppb level) geological samples has been hampered by the absence of an accurate, low blank, preconcentration technique. Ni- S fire assay, the traditional preconcentration method, has been critically
Woodland, Sarah Justine
core
Sulfur isotope rations of sulfide minerals from the deposit of the Tsuchikura mine, Shiga Prafecture, Japan [PDF]
, 1998 Sulfur isotope rations of sulfide minerals in the ore specimens from the deposit of the Tsuchikura mine are distrib-uted in a range from -0.8 to 5.4%, mostly from +0.5 to 3.0%, close to the previous data (from +1 to +3%) by Miyake and Sasaki (1980).
Harada, Kaori +2 more
core +1 more source
, 2014 This study investigates the preserved fluid contents of different generations of mineralised and unmineralised vein minerals from multiple different deposits across the Zambian Copperbelt to define the fluid physicochemical characteristics of the fluids ...
Nowecki, James Philip
core +1 more source
Advanced Functional Materials, EarlyView.A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen +10 more
wiley +1 more source
Evaluating mantle and crustal processes using isotope geochemistry [PDF]
, 1999 Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 1999Geochemical studies are fundamental for understanding how ...
Saal, Alberto Edgardo +2 more
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Frontiers in Earth ScienceIn this paper, the Binnan molybdenum (Mo) deposit, a newly discovered deposit located in the Great Xing’an Range, eastern section of the Central Asian Orogenic Belt, has been subjected to a comprehensive integrated study involving field surveys, rhenium ...
Zhongyou Qi +6 more
doaj +1 more source