Results 111 to 120 of about 55,934 (323)

Quantitative analysis of WC stars: Constraints on neon abundances from ISO/SWS spectroscopy [PDF]

, 2000
Neon abundances are derived in four Galactic WC stars -- gamma Vel (WR11, WC8+O7.5III), HD156385 (WR90, WC7), HD192103 (WR135, WC8), and WR146 (WC5+O8) - using mid-infrared fine structure lines obtained with ISO/SWS.
A. J. Willis, Abbott D. C., Barlow M. J., Becker S. R., Becker S. R., Becker S. R., Butler K., Cardelli J. A., Chapman J., Crowther P. A., Crowther P. A., Crowther P. A., D. John Hillier, de Graauw TH., de Jager C., De Marco O., Dougherty S. M., Dougherty S. M., Eenens P. R. J., Eenens P. R. J., Fernley J. A., Galavis M. E., Hillier D. J., Hillier D. J., Hillier D. J., Hillier D. J., Hillier D. J., Howarth I. D., Howarth I. D., Howarth I. D., K. A. van der Hucht, Kessler M., Koesterke L., L. Dessart, Langer N., Leitherer C., Lepine S., Lundstrom I., Luo D., Luo D., Massey P., Meynet G., Moffat A. F. J., Morris P. W., Morris P. W., Morris P. W., Niemela V., Nussbaumer H., Nussbaumer H., P. A. Crowther, P. W. Morris, Peach G., Prinja R. K., Saraph H. E., Saraph H. E., Schaerer D., Schaerer D., Schaller G., Schmutz W., Schmutz W., Seaton M. J., Smith L. F., St Louis N., Steenman H., Steenman H., Stevens I. R., Torres-Dodgen A. V., Torres-Dodgen A. V., Tully J. A., van der Hucht K. A., van der Hucht K. A., van der Hucht K. A., van der Hucht K. A., Willis A. J., Willis A. J., Wright A. E., Yu Yan, Yu Yan   +77 more
core   +2 more sources

Implanted Microneedles Loaded with Sparfloxacin and Zinc‐Manganese Sulfide Nanoparticles Activates Immunity for Postoperative Triple‐Negative Breast Cancer to Prevent Recurrence and Metastasis

Advanced Science, EarlyView.
Hyaluronic acid Microneedles (MNs) are loaded with Sparfloxacin (SP) and zinc‐manganese sulfide (ZMS) for the postoperative in situ treatment of triple‐negative breast cancer (TNBC) to prevent cancer recurrence and combat wound infection. These microneedles enhance antitumor immunity by activating the cGAS‐STING pathway, suppress tumor growth, reduce ...
Zhaoyou Chu, Wang Zheng, Wanyue Fu, Jun Liang, Wanni Wang, Lingling Xu, Xiaohua Jiang, Zhengbao Zha, Haisheng Qian   +8 more
wiley   +1 more source

Bias in C IV-based quasar black hole mass scaling relationships from reverberation mapped samples [PDF]

arXiv, 2015
The masses of the black holes powering quasars represent a fundamental parameter of active galaxies. Estimates of quasar black hole masses using single-epoch spectra are quite uncertain, and require quantitative improvement. We recently identified a correction for C IV $\lambda$1549-based scaling relationships used to estimate quasar black hole masses ...
arxiv  

An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-Infrared [PDF]

, 2013
We present an atlas of 129 spectral energy distributions for nearby galaxies, with wavelength coverage spanning from the UV to the mid-infrared. Our atlas spans a broad range of galaxy types, including ellipticals, spirals, merging galaxies, blue compact dwarfs and luminous infrared galaxies.
arxiv   +1 more source

Zinc - 1,10-phenanthroline complexes and their analytical application [PDF]

, 1951
The use of ultraviolet spectrophotometry for quantitative inorganic analytical purposes has long remained unexploited. An extremely large number of complexes of metals have characteristic absorption properties in the visible portion of the spectrum and ...
Banks, C. V., McClure, John Hibbert
core   +2 more sources

Two‐Step Tandem Catalysis for High‐Efficiency Ammonia Synthesis Via Nitrate Reduction on Anion‐Intercalated CoNi LDH and Cu/Cu2O

Advanced Science, EarlyView.
By integrating Cu/Cu2O and CoNi LDH, tandem kinetic descriptors, including a volcano curve, are employed to predict rate constants, facilitating ideal kinetic matching for efficient ammonia synthesis. The highest ammonia yield (1.12 mmol cm−2 h−1) and Faraday efficiency (99.78%) are achieved by rate matching between Cu/Cu2O and MoO4‐CoNi LDH.
Changzheng Lin, Weijia Li, Hao Chen, Jiangtao Feng, Mengyuan Zhu, Jinwen Shi, Mingtao Li, Bo Hou, Zhenyu Wang, Xin Chen, Jia Liu, Wei Yan   +11 more
wiley   +1 more source

Carbon abundances and radial gradients in NGC300 and other nearby spiral galaxies [PDF]

arXiv, 2014
We present preliminary results of deep echelle spectrophotometry of a sample of HII regions along the disk of the Scd galaxy NGC300 obtained with the Ultraviolet and Visual Echelle Spectrograph (UVES) at the Very Large Telescope (VLT) with the aim of detect and measure very faint OII and CII permitted lines.
arxiv  

Improved ultraviolet spectrophotometry of serum theophylline.

Clinical Chemistry, 1978
Abstract We present an improved method for ultraviolet spectrophotometry of theophylline in serum. We studied various extraction techniques aimed at eliminating interferences from co-extractable serum constituents. In the resulting modified procedure, 1 ml of serum is required and a salt-solvent pair of ammonium sulfate and chloroform ...
K Blum, P Carter, J E Wallace
openaire   +3 more sources

A Study of the Near-Ultraviolet Spectrum of Vega

, 2005
UV, optical, and near-IR spectra of Vega have been combined to test our understanding of stellar atmospheric opacities, and to examine the possibility of constraining chemical abundances from low-resolution UV fluxes.
Alejandro Garcia‐Gil, Allende Prieto C., Alonso A., Bell R. A., Bertelli G., Carlos Allende Prieto, Castelli F., Castelli F., Cunto W., Grevesse N., Holweger H., Hubeny I., Ilijic S., Ivan Hubeny, Kurucz R. L., Moon T. T., Nelder J. A., Perez Hernandez F., Ramon J. Garcia Lopez, Sturenburg S., Terez G. A., Vasil’Yev I. A.   +21 more
core   +2 more sources

Regulating Airflow Using Hybrid LCN for Soft Pneumatic Circuits

Advanced Intelligent Systems, EarlyView.
To address more autonomous soft robots with embodied control and regulation systems, herein, a liquid crystal network‐based fluid regulator that can be manipulated through multiphysical stimuli is proposed. Aided by finite element modeling for thermal actuation, regulators are designed and incorporated into fluidic circuits and demonstrate that they ...
Elif Kurt, Youssef M. Golestani, Efstathios Barmpoutsis, Sergio Picella, Robin L. B. Selinger, Johannes T. B. Overvelde, Danqing Liu   +6 more
wiley   +1 more source