Results 101 to 110 of about 57,033 (324)

Ultraviolet ISM Diagnostics for Star-Forming Galaxies I. Tracers of Metallicity and Extinction [PDF]

, 2015
We have observed a sample of 14 nearby ($z \sim 0.03$) star-forming blue compact galaxies in the rest-frame far-UV ($\sim1150-2200 \AA$) using the Cosmic Origins Spectrograph on the Hubble Space Telescope. We have also generated a grid of stellar population synthesis models using the Starburst99 evolutionary synthesis code, allowing us to compare ...
arxiv   +1 more source

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

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

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

Study on combination therapy for lung cancer through pemetrexed‐loaded mesoporous polydopamine nanoparticles

Journal of Biomedical Materials Research Part A, Volume 111, Issue 2, Page 158-169, February 2023., 2023
Abstract Lung cancer is one of the most commonly diagnosed cancers, and surgical resection is the optimal choice for the primary lung tumor. But for the secondary lung cancer, chemotherapy and combined radiotherapy still are the main strategies. To realize the combined treatment for non‐small cell lung cancer (NSCLC), in this work, a nanoplatform based
Jian Xu, Wei Xu, Zhiqiang Wang, Yuequan Jiang   +3 more
wiley   +1 more source

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

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  

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

A spectrophotometric study of blood group A-specific substance isolated from hog gastric mucosa [PDF]

, 1948
A study of the ultraviolet absorption spectra of preparations of blood group A-specific substance isolated from hog gastric mucin supports the view that group A substance, and probably group O substance, has little specific absorption in this spectral ...
Holzman, George, Niemann, Carl
core  

Magnetite Micro/Nanorobots for Efficient Targeted Alleviation of Inflammatory Bowel Disease

Advanced Science, EarlyView.
Improved reactive oxygen species scavenging capacities of functionalized micro/nanorobots (MNRs) are useful for the treatment of inflammatory bowel disease (IBD). MNRs can break the harmful bacteria in IBD, thereby eliminating inflammation and restoring the intestinal barrier function.
Ying Feng, Yang Liu, Linlin Liu, Qian Yang, Miao An, Huaming Yang   +5 more
wiley   +1 more source