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Reed, M. D.,Harms, S. L.,Poindexter, S.,Zhou, A.‐,Y.,Eggen, J. R.,Morris, M. A.,Quint, A. C.,McDaniel, S.,Baran, A.,Dolez, N.,Kawaler, S. D.,Kurtz, D. W.,Moskalik, P.,Riddle, R.,Zola, S.,Østense Blackwell Publishing Ltd 2011 Monthly notices of the Royal Astronomical Society Vol.412 No.1
<P><B>ABSTRACT</B></P><P>KPD 1930+2752 is a short‐period pulsating subdwarf B (sdB) star. It is also an ellipsoidal variable with a known binary period of 2.3 h. The companion is most likely a white dwarf and the total mass of the system is close to the Chandresekhar limit. In this paper, we report the results of Whole Earth Telescope (WET) photometric observations during 2003 and a smaller multisite campaign of 2002. From 355 h of WET data, we detect 68 pulsation frequencies and suggest an additional 13 frequencies within a crowded and complex temporal spectrum between 3065 and 6343 μHz (periods between 326 and 157 s). We examine pulsation properties including phase and amplitude stability in an attempt to understand the nature of the pulsation mechanism. We examine a stochastic mechanism by comparing amplitude variations with simulated stochastic data. We also use the binary nature of KPD 1930+2752 for identifying pulsation modes via multiplet structure and a tidally induced pulsation geometry. Our results indicate a complicated pulsation structure that includes short‐period (≈16 h) amplitude variability, rotationally split modes, tidally induced modes and some pulsations which are geometrically limited on the sdB star.</P>
New measurement of exclusive decays of theχc0andχc2to two-meson final states
Asner, D. M.,Edwards, K. W.,Reed, J.,Robichaud, A. N.,Tatishvili, G.,Briere, R. A.,Vogel, H.,Onyisi, P. U. E.,Rosner, J. L.,Alexander, J. P.,Cassel, D. G.,Duboscq, J. E.,Ehrlich, R.,Fields, L.,Galik, American Physical Society 2009 PHYSICAL REVIEW D - Vol.79 No.7
Transits and starspots in the WASP-6 planetary system
Tregloan-Reed, J.,Southworth, J.,Burgdorf, M.,Novati, S. C.,Dominik, M.,Finet, F.,Jorgensen, U. G.,Maier, G.,Mancini, L.,Prof, S.,Ricci, D.,Snodgrass, C.,Bozza, V.,Browne, P.,Dodds, P.,Gerner, T.,Harp Oxford University Press 2015 Monthly notices of the Royal Astronomical Society Vol.450 No.2
2006 WHOLE EARTH TELESCOPE OBSERVATIONS OF GD358: A NEW LOOK AT THE PROTOTYPE DBV
Provencal, J. L.,Montgomery, M. H.,Kanaan, A.,Shipman, H. L.,Childers, D.,Baran, A.,Kepler, S. O.,Reed, M.,Zhou, A.,Eggen, J.,Watson, T. K.,Winget, D. E.,Thompson, S. E.,Riaz, B.,Nitta, A.,Kleinman, S IOP Publishing 2009 The Astrophysical journal Vol.693 No.1
Gorby, Y. A.,Yanina, S.,McLean, J. S.,Rosso, K. M.,Moyles, D.,Dohnalkova, A.,Beveridge, T. J.,Chang, I. S.,Kim, B. H.,Kim, K. S.,Culley, D. E.,Reed, S. B.,Romine, M. F.,Saffarini, D. A.,Hill, E. A.,Sh Proceedings of the National Academy of Sciences 2006 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.103 No.30
<P>Shewanella oneidensis MR-1 produced electrically conductive pilus-like appendages called bacterial nanowires in direct response to electron-acceptor limitation. Mutants deficient in genes for c-type decaheme cytochromes MtrC and OmcA, and those that lacked a functional Type II secretion pathway displayed nanowires that were poorly conductive. These mutants were also deficient in their ability to reduce hydrous ferric oxide and in their ability to generate current in a microbial fuel cell. Nanowires produced by the oxygenic phototrophic cyanobacterium Synechocystis PCC6803 and the thermophilic, fermentative bacterium Pelotomaculum thermopropionicum reveal that electrically conductive appendages are not exclusive to dissimilatory metal-reducing bacteria and may, in fact, represent a common bacterial strategy for efficient electron transfer and energy distribution.</P>
Metzger, B.T.,Barnes, D.M.,Reed, J.D. The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.4
Greater than 50% of Americans use some form of a dietary supplement, and a diagnosis of coronary artery disease is associated with higher supplement use. The objective of this study was to compare nutritional supplements (pectin, polyphenols, and phytosterols) to lovastatin to reduce serum cholesterol. Familial hypercholesterolemic (FH) swine received the same amount of basal diet (control) in addition to pectin (30 g/day), polyphenols (20 g/day), phytosterols (6 g/day), and all possible combinations in contrast to lovastatin (3 mg/kg of body weight). The experimental design consisted of 4 weeks of basal diet followed by 4 weeks of basal diet plus the supplement treatment. All of the supplements, except pectin, reduced total cholesterol by an average of $71\;{\pm}\;19\;mg/dL$ in comparison to the control diet ($53\;{\pm}\;20\;mg/dL$) and lovastatin ($143\;{\pm}\;21\;mg/dL$) during the 5.8-week treatment period. Serum high-density lipoprotein-cholesterol remained unchanged, while serum triglycerides changed independent of diet. During the 5.8-week treatment period serum low-density lipoprotein (LDL)-cholesterol was reduced maximally 22%, 19%, 20%, 17%, 18%, and 17% by polyphenols, phytosterols, pectin+polyphenols, pectin+phytosterols, polyphenols+phytosterols, and pectin+polyphenols+phytosterols, respectively, compared to control (8%) and lovastatin (40%). Phytosterols was the most effective supplementation, while both phytosterol and polyphenol supplements enhanced the reduction in LDL-cholesterol of pectin-containing diets. Supplements effectively reduced cholesterol in FH swine by half compared to lovastatin. Results suggest that more research on the use of dietary supplements, alone or in combination with statins, to reduce LDL-cholesterol is justified.
B.T. Metzger,D.M. Barnes,J.D. Reed 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.4
Greater than 50% of Americans use some form of a dietary supplement, and a diagnosis of coronary artery disease is associated with higher supplement use. The objective of this study was to compare nutritional supplements (pectin, polyphenols, and phytosterols) to lovastatin to reduce serum cholesterol. Familial hypercholesterolemic (FH) swine received the same amount of basal diet (control) in addition to pectin (30g/day), polyphenols (20g/day), phytosterols (6g/day), and all possible combinations in contrast to lovastatin (3mg/kg of body weight). The experimental design consisted of 4 weeks of basal diet followed by 4 weeks of basal diet plus the supplement treatment. All of the supplements, except pectin, reduced total cholesterol by an average of 71±19mg/dL in comparison to the control diet (53±20mg/dL) and lovastatin (143±21mg/dL) during the 5–8-week treatment period. Serum high-density lipoprotein-cholesterol remained unchanged, while serum triglycerides changed independent of diet. During the 5–8-week treatment period serum low-density lipoprotein (LDL)-cholesterol was reduced maximally 22%, 19%, 20%, 17%, 18%, and 17% by polyphenols, phytosterols, pectin+polyphenols, pectin+phytosterols, polyphenols+phytosterols, and pectin+polyphenols+phytosterols, respectively, compared to control (8%) and lovastatin (40%). Phytosterols was the most effective supplementation, while both phytosterol and polyphenol supplements enhanced the reduction in LDL-cholesterol of pectin-containing diets. Supplements effectively reduced cholesterol in FH swine by half compared to lovastatin. Results suggest that more research on the use of dietary supplements, alone or in combination with statins, to reduce LDL-cholesterol is justified.
Physical properties of the HAT-P-23 and WASP-48 planetary systems from multi-colour photometry
Ciceri, S.,Mancini, L.,Southworth, J.,Bruni, I.,Nikolov, N.,D’Ago, G.,Schrö,der, T.,Bozza, V.,Tregloan-Reed, J.,Henning, Th. Springer-Verlag 2015 Astronomy and astrophysics Vol.577 No.-
<P>Context. Accurate and repeated photometric follow-up observations of planetary transit events are important to precisely characterize the physical properties of exoplanets. A good knowledge of the main characteristics of the exoplanets is fundamental in order to trace their origin and evolution. Multi-band photometric observations play an important role in this process. Aims. By using new photometric data, we computed precise estimates of the physical properties of two transiting planetary systems at equilibrium temperatures of ~2000 K. Methods. We present new broadband, multi-colour photometric observations obtained using three small class telescopes and the telescope-defocussing technique. In particular we obtained 11 and 10 light curves covering 8 and 7 transits of HAT-P-23 and WASP48, respectively. For each of the two targets, one transit event was simultaneously observed through four optical filters. One transit of WASP-48b was monitored with two telescopes from the same observatory. The physical parameters of the systems were obtained by fitting the transit light curves with JKTEBOP and from published spectroscopic measurements. Results. We have revised the physical parameters of the two planetary systems, finding a smaller radius for both HAT-P-23?b and WASP48?b, Rb = 1.224 ± 0.037 RJup and Rb = 1.396 ±0.051 RJup, respectively, than those measured in the discovery papers (Rb = 1.368 ± 0.090 RJup and Rb = 1.67 ±0.10 RJup). The density of the two planets are higher than those previously published (ρb ~ 1.1 and ~0.3 ρjup for HAT-P-23 and WASP48, respectively) hence the two hot Jupiters are no longer located in a parameter space region of highly inflated planets. An analysis of the variation of the planet’s measured radius as a function of optical wavelength reveals flat transmission spectra within the experimental uncertainties. We also confirm the presence of the eclipsing contact binary NSVS3071474 in the same field of view of WASP48, for which we refine the value of the period to be 0.459?d.</P>