Results 91 to 100 of about 101,472 (247)

Development of an advanced on-line position-specific stable carbon isotope system and application to methyl tert-butyl ether [PDF]

, 2009
We present an advanced system for on-line position-specific carbon isotope analysis. The main limitation of on-line intramolecular isotope ratio measurements has been that optimal pyrolytic fragments are obtained mostly at temperatures where the analyte ...
Abelson, Barrie, Barth, Benson, Coplen, Corso, Corso, Corso, Daly, Dempster, Dias, Elsner, Elsner, Fischer, Gray, Hall, Hall, Harrington, Hayes, Hirschorn, Huang, Hunkeler, Jasper, Jeffrey, Kolhatkar, Kuder, Mancini, Mariotti, Matthews, Meckenstock, Meier-Augenstein, Meier-Augenstein, Merritt, Miller, Monson, Morrison, O'Sullivan, Poulson, Richnow, Rosell, Sacks, Sano, Schmidt, Schmidt, Schüth, Slater, Slater, Slater, Smallwood, Somsamak, Somsamak, Vogler, Wang, Wolyniak, Wolyniak, Yamada, Zwank   +56 more
core   +1 more source

Gold Nanoclusters as Dual Agents for Engineering Tumor Vascular Leakiness and Performing Photothermal Therapy

Advanced Functional Materials, EarlyView.
Many cancer nanotherapeutics, while potent, suffer from the inability to escape from the tumor vasculature, especially in the absence of endothelial permeability. In this work, ultrasmall gold nanoclusters could engineer nanomaterials induced endothelial leakiness (NanoEL) and harness strong NIR induced photothermal characteristics to suppress tumor ...
Nengyi Ni, Kuoran Xing, Bihan Zhang, Baoteng Wang, Yinglu Chen, Jianping Xie, Xiao Sun, Jinping Wang, David Tai Leong   +8 more
wiley   +1 more source

Isotope Mass Spectrometry in Meat Identification

Техника и технология пищевых производств
Meat and meat products are consumed by a large proportion of the population. As a result, food scientists keep inventing new methods for meat identification, e.g., isotope mass spectrometry.
Lisitsyn Andrey, Chernukha Irina, Oganesyants Lev, Panasyuk Alexander, Sviridov Dmitriy, Ganin Mikhail   +5 more
doaj   +1 more source

Effect of Organic Matter in Water Samples on the Hydrogen Stable Isotope Ratio Determination by Thermal Conversion/Elemental Analysis-Isotope Ratio Mass Spectrometry

Yankuang ceshi, 2019
BACKGROUND In the study of hydrology and water resources, the hydrogen stable isotope ratio (δ2H) of water is an important detection parameter, and its changing patterns can be used to identify and quantify the source of water, and reveal the evolution ...
HAO Xin-li, HAN Si-hang, YANG Lei, DAI Yi-zhu, HUANG Lu-yao, WANG Jing-zheng   +5 more
doaj   +1 more source

Carbon isotope fractionation characteristics during shale gas release

Shiyou shiyan dizhi, 2020
The isotope monitoring of desorption gas from shale cores was carried out at the drill site. Gas is lost during core recovery and thus the isotope variation for the whole process of gas release from shale cores cannot be obtained. A high pressure methane
Cheng TAO, Changbo ZHAI, Linjie YU, Baojian SHEN, Jie WANG, Huamin YANG   +5 more
doaj   +1 more source

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

Advanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang, Juguo Dai, Dongxu Li, Jianghua Wu, Hucheng Fu, Yiting Xu, Xueqiang Qi, Qian Xue, Yanbin Shen, Xiaoqing Pan, Conghui Yuan, Shuifen Xie, Andreu Cabot, Lizong Dai   +13 more
wiley   +1 more source

Liquid chromatography coupled to mass spectrometry for steroid hormones analysis: issues and solutions in sample preparation and method development

Journal of Chromatography Open
Current work presents main aspects of the application of liquid chromatography in combination with low- and high-resolution mass spectrometry to an analysis of steroid hormones. Advantages and challenges of both targeted and untargeted analysis are shown
A. Temerdashev, S. Girel, S.N. Atapattu, Y.-Q. Feng, E. Gashimova, T. Malitskaya, I. Podolskiy, Q.-F. Zhu   +7 more
doaj   +1 more source

Sampling systems for isotope‐ratio mass spectrometry of atmospheric ammonia

Rapid Communications in Mass Spectrometry, 2005
Abstract Passive and active ammonia (NH 3 ) sampling devices have been tested for their nitrogen (N) capture potential and δ 15 N fractionation effects. Several sampling techniques produced significantly different
Skinner, Richard, Ineson, Phil., Jones, Helen, Sleep, Darren, Theobald, Mark   +4 more
openaire   +4 more sources

Engineered Protein‐Based Ionic Conductors for Sustainable Energy Storage Applications

Advanced Materials, EarlyView.
Rational incorporation of charged residues into an engineered, self‐assembling protein scaffold yields solid‐state protein films with outstanding ionic conductivity. Salt‐doping further enhances conductivity, an effect amplified in the engineered variants. These properties enable the material integration into an efficient supercapacitor.
Juan David Cortés‐Ossa, Paolo Blesio, Marcial Fernandez‐Castro, Lisa Almonte, Maxence Fernandez, Mantas Liutkus, Perumal Pandurangan, Carlos Sabater, Aitor Villaverde, Manuel Melle‐Franco, Nurit Ashkenasy, Felipe Jiménez‐Ángeles, M. Carmen Morant‐Miñana, M. Reyes Calvo, Aitziber L. Cortajarena   +14 more
wiley   +1 more source

Spectral Tuning of Hyperbolic Shear Polaritons in Monoclinic Gallium Oxide via Isotopic Substitution

Advanced Materials, EarlyView.
Spectral tuning of highly directional hyperbolic shear polaritons is realized via isotopic substitution of 16O to 18O in monoclinic β$\beta$‐phase gallium oxide. A red‐shift of almost 40 cm−1 is experimentally demonstrated with near‐field imaging, corroborated by the permittivity change extracted from far‐field experiments and density functional theory.
Giulia Carini, Mohit Pradhan, Elena Gelžinytė, Andrea Ardenghi, Saurabh Dixit, Maximilian Obst, Aditha S. Senarath, Niclas S. Mueller, Gonzalo Álvarez‐Pérez, Katja Diaz‐Granados, Ryan A. Kowalski, Richarda Niemann, Felix G. Kaps, Jakob Wetzel, Raghunandan Balasubramanyam Iyer, Piero Mazzolini, Mathias Schubert, J. Michael Klopf, Johannes T. Margraf, Oliver Bierwagen, Martin Wolf, Karsten Reuter, Lukas M. Eng, Susanne C. Kehr, Joshua D. Caldwell, Christian Carbogno, Thomas G. Folland, Markus R. Wagner, Alexander Paarmann   +28 more
wiley   +1 more source