Results 91 to 100 of about 224,119 (296)

Geochemistry of spodumene from pegmatites of the Laghman granitoid complex, Afghanistan

Записки Горного института
The article presents the first data on the rare element contents in the compositions of spodumene from pegmatites of the Laghman granitoid complex in Eastern Afghanistan, the Kolatan, Digal, Gulsalak, and Tsamgal deposits.
Aleksandr N. Evdokimov, Ataullah Yosufzai   +1 more
doaj  

Tracing Sub‐Monolayer Contamination on Wafer‐Scale 2D Materials

Advanced Functional Materials, EarlyView.
Sub‐monolayer adventitious carbon contamination limits the performance and reproducibility of 2D material‐based devices. This study demonstrates scanning helium microscopy (SHeM) as a non‐destructive, ultra‐sensitive tool for wafer‐scale imaging of surface cleanliness.
Chenyang Zhao, Sam M. Lambrick, Ke Wang, Shaoliang Guan, Aleksandar Radić, David J. Ward, Andrew P. Jardine, Boyao Liu   +7 more
wiley   +1 more source

Effect of Sims modified posture on the rotation and descent of the fetus in women during their first delivery with epidural analgesia

NURE Investigación, 2011
Objective: To assess whether Sims modified posture reduces the duration of the second labor stage of delivery and cases rotation and the descent of the fetus by the delivery channel in nulliparous women with epidural analgesia.
Ana Mª Ruíz Rey, Rosa Mª Rodríguez Ferrer, Gema Magdaleno del Rey, Mª Belén Feijoo Iglesias, Rosa Ana Martín de Vega   +4 more
doaj  

Research on Uranium Particle Analysis Technology Based on Large Geometry Secondary Ion Mass Spectrometry

Yuanzineng kexue jishu
Nuclear safeguards remain a topic of shared concern for the international community. Large geometry secondary ion mass spectrometry (LG-SIMS) has been employed to efficiently analyze uranium `isotopes in uranium particle samples for monitoring undeclared
WU Yong1, 2, QIN Mingkuan1, 2, TAN Jing2, GUO Dongfa2, CUI Jianyong2, HE Sheng1, 2, CAI Yelei1, 2, LIN Yan1, 2
doaj   +1 more source

Combining combing and secondary ion mass spectrometry to study DNA on chips using 13C and 15N labeling [version 1; referees: 2 approved]

F1000Research, 2016
Dynamic secondary ion mass spectrometry (D-SIMS) imaging of combed DNA – the combing, imaging by SIMS or CIS method – has been developed previously using a standard NanoSIMS 50 to reveal, on the 50 nm scale, individual DNA fibers labeled with different ...
Armelle Cabin-Flaman, Anne-Francoise Monnier, Yannick Coffinier, Jean-Nicolas Audinot, David Gibouin, Tom Wirtz, Rabah Boukherroub, Henri-Noël Migeon, Aaron Bensimon, Laurent Jannière, Camille Ripoll, Victor Norris   +11 more
doaj   +1 more source

Contaminant Interferences with SIMS Analyses of Microparticle Impactor Residues on LDEF Surfaces [PDF]

, 1992
Elemental analyses of impactor residues on high purity surface exposed to the low earth orbit (LEO) environment for 5.8 years on Long Duration Exposure Facility (LDEF) has revealed several probable sources for microparticles at this altitude, including ...
Batchelor, D., Griffis, D. P., Hunter, J. L., Misra, V., Ricks, D. A., Simon, C. G., Wortman, J. J.   +6 more
core   +1 more source

Functional single index models for longitudinal data

, 2011
A new single-index model that reflects the time-dynamic effects of the single index is proposed for longitudinal and functional response data, possibly measured with errors, for both longitudinal and time-invariant covariates.
Jiang, Ci-Ren, Wang, Jane-Ling
core   +1 more source

FEM-DtN-SIM method for computing resonances of Schrödinger operators

Applied Mathematics Letters
The study of resonances of the Schrödinger operator has a long-standing tradition in mathematical physics. Extensive theoretical investigations have explored the proximity of resonances to the real axis, their distribution, and bounds on the counting functions. However, computational results beyond one dimension remain scarce due to the nonlinearity of
Bo Gong, Takumi Sato, Jiguang Sun, Xinming Wu   +3 more
openaire   +2 more sources

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh, Ying Zhao, Enzhong Jin, Zixin Zhang, Vinicius Martins, Parham Pirayesh, Yi Gan, Yi Yuan, Yijia Wang, Frederick Benjamin Holness, Changhong Cao, Jun Song, Yang Zhao   +12 more
wiley   +1 more source

Study on the Analysis of Uranium-in Rat Hair by Secondary Ion Mass Spectrometry

Journal of Isotopes, 2021
Hair samples, as a non-invasive biological material, it is gradually gaining attention in the fields of nuclear forensics, environmental monitoring, occupational exposure detection, and medicine due to its certain accumulation effect on human trace ...
HU Ruixuan;SHEN Yan;LI Lili;HUANG Shenghui;ZHAO Lifei;ZHAO Yonggang
doaj