Results 31 to 40 of about 237,285 (210)

A comparison of superradiance and negative-phase-velocity phenomenons in the ergosphere of a rotating black hole

, 2005
The propagation of electromagnetic plane waves with negative phase velocity (NPV) in the ergosphere of a rotating black hole has recently been reported. A comparison of NPV propagation and superradiance is presented.
Akhlesh Lakhtakia, Andersson, Barceló, Bardeen, Barton, Bekenstein, Chandrasekhar, Halliday, Hawking, Lakhtakia, Lakhtakia, Lamoreaux, Lamoreaux, Mackay, Mackay, Pendry, Ramakrishna, Ruppin, Safonova, Sandi Setiawan, Schleich, Schutz, Slusher, Spruch, Starobinsky, Starobinsky, Tamm, Tom G. Mackay   +27 more
core   +1 more source

Baseline anti-NS4a antibodies in combination with on-treatment quantitative HCV-RNA reliably identifies nonresponders to pegylated interferon-ribavirin combination therapy after 4 weeks of treatment [PDF]

, 2010
Background Early detection of nonresponders to hepatitis C therapy limits unnecessary exposure to treatment and its side-effects. A recent algorithm combining baseline anti-NS4a antibodies and on-treatment quantitative PCR identified nonresponders to a ...
de Knegt, Robert J, Desombere, Isabelle, Haagmans, Bart, Hansen, Bettina, Janssen, Harry LA, Leroux-Roels, Geert, Orlent, Hans, Schalm, Solko W, Van Vlierberghe, Hans   +8 more
core   +1 more source

Economic efficiency of breeding Tsigai sheep in the Central and South - East Europe [PDF]

Ekonomika Poljoprivrede (1979), 2020
Tsigai is an indigenous sheep breed present in entire Central and South-East Europe. Due to its low meat and milk production number of Tsigai sheep is in a sharp decline.
Nastić Lana, Ivanović Sanjin, Marković Todor   +2 more
doaj  

Exploring the Use of Cost-Benefit Analysis to Compare Pharmaceutical Treatments for Menorrhagia [PDF]

, 2015
Background: The extra-welfarist theoretical framework tends to focus on health-related quality of life, whilst the welfarist framework captures a wider notion of well-being.
D Husereau, DK Whynes, E McIntosh, Emma Frew, HA Glick, J Gupta, Janesh Kumar Gupta, Joe Kai, L Curtis, M Haefeli, M Shapley, MF Drummond, National Collaborating Centre for Women’s and Children’s Health, National Institute of Health and Clinical Excellence, National Institute of Health and Clinical Excellence, P Shackley, P Shackley, RD Smith, RD Smith, RW Shaw, S Birch, S Sanghera, S Sanghera, Sabina Sanghera, Tracy Elizabeth Roberts   +24 more
core   +4 more sources

Methodology for assessing the economic efficiency of implementing a jigless manufacturing preparation method for light aircraft

Авіаційно-космічна техніка та технологія
The research focuses on assessing the economic efficiency of implementing a jigless manufacturing preparation method in light aircraft production. The relevance of the research is determined by the need to reduce costs and lead times for manufacturing ...
Oleksiy Bogach
doaj   +1 more source

Bmserpin2 Is Involved in BmNPV Infection by Suppressing Melanization in Bombyx mori

Insects, 2019
Melanization, an important defense response, plays a vital role in arthropod immunity. It is mediated by serine proteases (SPs) that convert the inactive prophenoloxidase (PPO) to active phenoloxidase (PO) and is tightly regulated by serine protease ...
Shahzad Toufeeq, Jie Wang, Shang-Zhi Zhang, Bing Li, Pei Hu, Lin-Bao Zhu, Ling-Ling You, Jia-Ping Xu   +7 more
doaj   +1 more source

Asymptotic properties of the sequential empirical ROC, PPV and NPV curves under case-control sampling

, 2012
The receiver operating characteristic (ROC) curve, the positive predictive value (PPV) curve and the negative predictive value (NPV) curve are three measures of performance for a continuous diagnostic biomarker.
Feng, Ziding, Koopmeiners, Joseph S.
core   +1 more source

Negative phase velocity of electromagnetic waves and the cosmological constant

, 2004
Examining the propagation of electromagnetic plane waves with the wavevector directed in opposition to the time-averaged Poynting vector in cosmological spacetime with piecewise uniform metric, we show that such negative-phase-velocity (NPV) propagation ...
Lakhtakia, Akhlesh, Mackay, Tom G., Setiawan, Sandi   +2 more
core   +3 more sources

Enhancing Oil Recovery through Waterflooding

Arid Zone Journal of Engineering, Technology and Environment, 2020
Waterflooding is a simple and cheaper means of improving oil recovery from a reservoir by injecting water into the reservoir. Economic considerations suggest injection and production wells must be optimally placed considering reservoir geology, fluid ...
A. S. Grema, M. K. Mahlon, A. S. Kolo, U. H. Taura   +3 more
doaj  

Executive management engineering plans for comparison with tsunami damage

International Journal of Coastal and Offshore Engineering, 2020
A tsunami is a sea wave of local or distant origin that results from large-scale seafloor displacements associated with strong earthquakes, major submarine slides, or exploding volcanic islands.
Mojtaba Zoljoodi, Reyhane Zoljoodi
doaj