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Linear Polarization Measurement of Gamma Rays in 155Gd by Using a Segmented Compton Polarimeter
J.H.Lee,S.Tanaka,T.Shinozuka,M.Fujita,A.Yamazaki,T.Sonoda,Y.K.Kim,J.S.Chai,C.S.Lee,J.Y.Huh,J.Y.Moon,Y.K.Kwon,Y.Gono,T.Fukuchi 한국물리학회 2002 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.40 No.5
A linear polarization measurement for gamma rays has been performed to directly determine the parities for the levels in 155Gd. High-spin states in 155Gd were populated in the 154Sm(,3n )155Gd reaction by using 35-MeV alphas. Linearly polarized gamma rays emitted from oriented states were measured by using a Compton polarimeter which is made of a planar-type germanium crystal and is segmented into 25 cathodes. The linear polarization of the gamma rays was measured by selecting Compton-scattered events red in coincidence between two adjacent cathodes. The sign of the measured linear polarization enabled us to distinguish between electric and magnetic types of gamma-ray transitions. Accordingly, the parities of the high-spin states in 155Gd were directly determined. Our parity assignment is in excellent agreement with a previous one. A linear polarization measurement for gamma rays has been performed to directly determine the parities for the levels in 155Gd. High-spin states in 155Gd were populated in the 154Sm(,3n )155Gd reaction by using 35-MeV alphas. Linearly polarized gamma rays emitted from oriented states were measured by using a Compton polarimeter which is made of a planar-type germanium crystal and is segmented into 25 cathodes. The linear polarization of the gamma rays was measured by selecting Compton-scattered events red in coincidence between two adjacent cathodes. The sign of the measured linear polarization enabled us to distinguish between electric and magnetic types of gamma-ray transitions. Accordingly, the parities of the high-spin states in 155Gd were directly determined. Our parity assignment is in excellent agreement with a previous one.
Ying L. Liu,Olga T. Filippova,Qin Zhou,Alexia Iasonos,Dennis S. Chi,Oliver Zivanovic,Yukio Sonoda,Ginger J. Gardner,Vance A. Broach,Roisin E. OCearbhaill,Jason A. Konner,Carol Aghajanian,Kara Long Roc 대한부인종양학회 2020 Journal of Gynecologic Oncology Vol.31 No.1
Objective: Neoadjuvant chemotherapy (NACT) followed by interval debulking surgery (IDS)confers similar outcomes as primary debulking surgery and chemotherapy. Little is knownabout patients who receive NACT but do not undergo debulking surgery. Our aim was tocharacterize these patients. Methods: We prospectively identified patients with newly diagnosed stage III/IV ovariancancer treated with NACT from 7/1/15–12/1/17. Fisher exact and Wilcoxon rank-sum tests wereused to compare clinical characteristics by surgical status. The Kaplan-Meier method wasused to estimate survival outcomes. Log-rank test and Cox proportional hazards model wereapplied to assess the relationship of covariates to outcome, and time-dependent covariateswere applied to variables collected after diagnosis. Results: Of 224 women who received NACT, 162 (72%) underwent IDS and 62 (28%) didnot undergo surgery. The non-surgical group was older (p<0.001), had higher Charlsoncomorbidity index (CCI; p<0.001), lower albumin levels (p=0.007), lower Karnofskyperformance scores (p<0.001), and were more likely to have dose reductions in NACT(p<0.001). Reasons for no surgery included poor response to NACT (39%), death (15%),comorbidities (24%), patient preference (16%), and loss to follow-up (6%). The nosurgery group had significantly worse overall survival (OS) than the surgery group (hazardratio=3.34; 95% confidence interval=1.66–6.72; p<0.001), after adjustment for age, CCI, anddose reductions. Conclusions: A significant proportion of women treated with NACT do not undergo IDS, andthese women are older, frailer, and have worse OS. More studies are needed to find optimaltherapies to maximize outcomes in this high-risk, elderly population.
Solar neutrino measurements in Super-Kamiokande-IV
Abe, K.,Haga, Y.,Hayato, Y.,Ikeda, M.,Iyogi, K.,Kameda, J.,Kishimoto, Y.,Marti, Ll.,Miura, M.,Moriyama, S.,Nakahata, M.,Nakajima, T.,Nakayama, S.,Orii, A.,Sekiya, H.,Shiozawa, M.,Sonoda, Y.,Takeda, A. American Physical Society 2016 Physical Review D Vol.94 No.5
<P>Upgraded electronics, improved water system dynamics, better calibration and analysis techniques allowed Super-Kamiokande-IV to clearly observe very low-energy B-8 solar neutrino interactions, with recoil electron kinetic energies as low as similar to 3.5 MeV. Super-Kamiokande-IV data-taking began in September of 2008; this paper includes data until February 2014, a total livetime of 1664 days. The measured solar neutrino flux is (2.308 +/- 0.020)(stat)(-0.040)(+0.039) (syst)) x 10(6)/(cm(2) sec) assuming no oscillations. The observed recoil electron energy spectrum is consistent with no distortions due to neutrino oscillations. An extended maximum likelihood fit to the amplitude of the expected solar zenith angle variation of the neutrino-electron elastic scattering rate in SK-IV results in a day/night asymmetry of (-3.6 +/- 1.6(stat) +/- 0.6(syst)%. The SK-IV solar neutrino data determine the solar mixing angle as sin(2)theta(12) = 0.327(-0.031)(+0.026), all SK solar data (SK-I, SK-II, SK III and SK-IV) measures this angle to be sin(2)theta(12) = 0.334(-0.023)(+0.027), the determined mass-squared splitting is Delta m(21)(2) = 4.8(-0.8)(+1.5) x 10(-5) eV(2).</P>
Effects on Growth Performance and Meat Quality Parameters by Restricted Diet during Finishing Days
Lee, S.D.,Song, Y.M.,Jin, S.K.,Ha, K.H.,Kim, I.S.,Kim, C.H.,Chowdappa, R.,Sonoda, T.,Song, R.D. Asian Australasian Association of Animal Productio 2005 Animal Bioscience Vol.18 No.9
The objective of the present study was to investigate the effects on growth performance, meat quality parameters and fatty acids of meat by restricted diet amount on finishing Berkshires. A total of 180 pigs (Berkshire, initially 52 kg BW) at 100 days of age were allotted in arrangement in a completely randomized design (10 pigs per pen), blocked arrangement of treatments with 3 replications. The variables were market ages (180, 200 and 220 days) and in which was also included sex (gilts and barrow). All the pigs were restrictively fed so that day could be marked at 103 kg. Pork quality was evaluated from 4 pigs of each treatment. Average daily gain (ADG) and average daily feed intake (ADFI) were decreased (p<0.05) with age increase. The ratio of feed to gain was increased (p<0.05) at 200 and 220 days compared to that of 180 days. Moisture and crude protein of longissimus dorsi muscle (LM) at 180 days were increased (p<0.05) compared to 200 and 220 days. Crude fat was increased (p<0.05) by age and crude ash was lower (p<0.05) at 180 days than at 220 days. Red to green meat color scale (CIE a$^{*}$) increased (p<0.05) at 200 and 220 days more than at 180 days. Regarding fatty acid composition in meat, saturated fatty acids (SFA) was increased more (p<0.05) at 220 days than at 180 and 200 days. The results indicate that even with a restricted diet of low nutrient supplement, there was an improvement in Berkshire meat quality parameters.