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Determination of N* amplitudes from associated strangeness production in p+p collisions
Mü,nzer, R.,Fabbietti, L.,Epple, E.,Lu, S.,Klose, P.,Hauenstein, F.,Herrmann, N.,Grzonka, D.,Leifels, Y.,Maggiora, M.,Pleiner, D.,Ramstein, B.,Ritman, J.,Roderburg, E.,Salabura, P.,Sarantsev, A.,B North-Holland Pub. Co 2018 Physics letters. Section B Vol.785 No.-
<P><B>Abstract</B></P> <P>We present the first determination of the energy-dependent amplitudes of N<SUP>⁎</SUP> resonances extracted from their decay in KΛ pairs in p+p → <SUP> pK + </SUP> Λ reactions. A combined Partial Wave Analysis of seven data samples with exclusively reconstructed p+p → <SUP> pK + </SUP> Λ events measured by the COSY-TOF, DISTO, FOPI and HADES Collaborations in fixed target experiments at kinetic energies between 2.14 to 3.5 GeV is used to determine the amplitude of the resonant and non-resonant contributions into the associated strangeness final state. The contribution of seven N<SUP>⁎</SUP> resonances with masses between 1650 MeV/c<SUP>2</SUP> and 1900 MeV/c<SUP>2</SUP> for an excess energy between 0 and 600 MeV has been considered. The Σ–p cusp and final state interactions for the p–Λ channel are also included as coherent contributions in the PWA. The N<SUP>⁎</SUP> contribution is found to be dominant with respect to the phase space emission of the pK Λ + final state at all energies demonstrating the important role played by both N<SUP>⁎</SUP> and interference effects in hadron–hadron collisions.</P>
A Relationship of Sex Hormone Levels and Erectile Dysfunction: Which Tests Should Be Done Routinely?
Talha M?ezzino?lu,Bilal G?m??,G?khan Temelta?,Zeki Arı,Co?kun B?y?ksu 연세대학교의과대학 2007 Yonsei medical journal Vol.48 No.6
Purpose: In this study, the relationship between sex hormone levels and erectile dysfunction (ED), as well as the necessity of routinely measuring sex hormone levels were evaluated. Materials and Methods: This study included one hundred patients admitted to a urology clinic for sexual dysfunction. To determine the hormone levels, following the history (included IIEF-5 score) and physical examination, triple blood samples were collected at intervals of 15 minutes between 08:00 and 10:00 am. Total and free testosterone, prolactin, follicle stimulating hormone and luteinizing hormone levels were studied. Results: Mean age was 43 (23-80) years. IIEF-5 score was less than 21 [9.8-4.3 (3-19)] in all study groups. There was a statistically significant correlation between tT and FSH, as well as between LH and FSH in Pearson (r =-0.513, p<0.001, respectively) and also in Spearman tests (r=-0.224, p=0.042 and r=-0.459, p<0.001, respectively). However, there was no correlation between age and serum hormone levels (p>0.05). Of the 100 patients, 18 (18%) had low tT, 77 (77%) had normal and 5 (5%) had high tT levels. No statistically significant correlation was found between decreased libido and tT levels (p>0.05). Twelve (66.6%) of the 18 patients with low tT had normal libido. Conclusion: Analyzing the medical history in detail and performing a thorough physical examination can reduce the need for excessive studies and consultations, and enables patients to save time and costs.
100KW DC Arc Plasma of CVD System for Low Cost Large Area Diamond Film Deposition
Lu, F.X.,Zhong, G.F.,Fu, Y.L.,Wang, J.J.,Tang, W.Z.,Li, G.H.,Lo, T.L.,Zhang, Y.G.,Zang, J.M.,Pan, C.H.,Tang, C.X.,Lu, Y.P. The Korean Ceramic Society 1996 The Korean journal of ceramics Vol.2 No.4
In the present paper, a new type of DC arc plasma torch is disclosed. The principles of the new magnetic and fluid dynamic controlled large orifice long discharge tunnel plasma torch is discussed. Two series of DC Plasma Jet diamond film deposition equipment have been developed. The 20kW Jet equipped with a $\Phi$70 mm orifice torch is capable of deposition diamond films at a growth rate as high as 40$\mu\textrm{m}$/h over a substrate area of $\Phi$65 mm. The 100kW high power Jet which is newly developed based on the experience of the low power model is equipped with a $\Phi$120 mm orifice torch, and is capable of depositing diamond films over a substrate area of $\Phi$110 mm at growth rate as high as 40 $\mu\textrm{m}$/h, and can be operated at gas recycling mode, which allows 95% of the gases be recycled. It is demonstrated that the new type DC plasma torch can be easily scaled up to even higher power Jet. It is estimated that even by the 100kW Jet, the cost for tool grade diamond films can be as low as less than $4/carat.
Lu, Z-R,Seo, E,Yan, L,Yin, S-J,Si, Y-X,Qian, G-Y,Park, Y-D,Yang, J-M Adenine Press 2010 Journal of biomolecular structure & dynamics Vol.28 No.2
<P>The tyrosinase gene was overexpressed in HEK293 cells, and then a DNA microarray and proteomic tools were applied to detect the dysregulated genes in highly pigmented cells. The candidate genes from the microarray were compared to the yeast two-hybridization results. Computational prediction via protein-protein interaction mapping suggested the existence of 66 hub genes in melanogenesis. Most importantly, RNA binding motif protein 9 is newly detected as a putative critical melanogenesis-associated gene in this study. The approach of combining the expression data analysis and predicted protein interaction partners performed in large scales can bring more reliable gene targets for understanding pigmentation.</P>
Fabrication of Nitrogen Doped p-ZnO and ZnO Light-Emitting Diodes on Sapphire
Y. M. Lu,Z. P. Wei,D. Z. Shen,Z. Z. Zhang,B. Yao,B. H. Li,J. Y. Zhang,D. X. Zhao,X. W. Fan,Z. K. Tang 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5
Nitrogen-doped p-type ZnO thin films were grown on c-plane sapphire (Al2O3) substrates by plasma-assistant molecular beam epitaxy, where O2 and N2 were introduced via a RF plasma source simultaneously. In situ optical emission spectra of the plasma were employed to monitor the chemical species in the active gas sources, one of the most important growth parameters. By adjusting the growth parameters, we confirm the optimal condition for p-type doping growth. The reproducible p-type ZnO thin films have the hole concentration (NA −ND) up to 1.0 × 1018 cm−3 and the resistivity of 6 cm. A ZnO LED was fabricated by depositing undoped n-type ZnO on the p-type layer. Electroluminescence spectra centered about 430 nm were obtained even at 350 K.
Switching Effect of Defect Modes in One-Dimensional Heterostructure Photonic Crystals
Y. H. Lu,이영백,이주열,M. D. Huang,P. J. Kim,S. Y. Park 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.II
The behavior of the defect mode was investigated theoretically in a one-dimensional heterostructure photonic crystal. A unique switching effect, which is definitely different from the blue shift phenomenon in conventional one-dimensional photonic crystals, is seen as the incident angle varies. Also, the angular switching rate can be manipulated effectively by adjusting the stacking number of substructures. This finding suggests that incident angular tuning in such a one-dimensional heterostructure photonic crystal will provide a new way for realizing high-precision filters and optical switches.
INTERLAYER COUPLING AND MAGNETOOPTICS IN MULTILAYERS
M. Lu,Q. S. Bie,Y. B. Xu,H. R. Zhai,S.M.Zhou,Liangyao Chen,Q.Y.Jin 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
Additional magnetooptical Kerr effect (AMOKE) was observed in several multilayer structures. For Fe/Pd and Co/Cu multilayers, AMOKE enhanced the Kerr rotation in short wavelength side. while for Fe/Ag and FeSi/Cu multilayer systems the Kerr rotation enhancement appeared in long wavelength side. A number of ferromagnetic/nonmagnetic/ferromagnetic(FM/NM/FM) sandwiches showed that the AMOKE led to oscillations of Kerr rotation and Kerr ellipticity in Certain wavelength range with changing NM layer thickness similar to the oscillatory interlayer coupling. The oscillation of effective optical constants related to the MOKE oscillation was observed for the first time. The mechanisms of the AMOKE were discussed.
Development of the 3.7 GHz LHCD System on HL-2A
B. Lu,M. Huang,H. Zeng,X. Y. Bai,X. H. Mao,Z. H. Lu,J. Liang,Z. H. Kang,M. W. Wang,K. Feng,H. Wang,C. Wang,J. Q. Wang,S. Wei,T. Yao,Y. N. Bu,J. Feng,G. Y. Cheng,S. D. Song,D. H. Xia,J. Rao 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.8
A 2 MW-3.7 GHz lower hybrid current drive (LHCD) system is under development for physicsexperiments on the HL-2A device. The RF Power is generated by four TH2103A klystron amplifiersand propagates in the TE10 mode through WR284 waveguides. The transmission lines with a lengthof 20 m to 30 m are pressurized with 2 bars of nitrogen to decrease the possibility of arcing. Thelauncher, based on the passive-active multi-junction (PAM) concept, has been developed and iscurrently being realized. It was designed for a power spectrum peaked at Nk = 2.75 with goodcoupling properties over a wide range of plasma parameters. The four klystrons are fed by ahigh-voltage power supply (HVPS) based on the pulse step modulation (PSM) concept with a fastswitch-off time of less than ten μs. This system is expected to be in operation within 1 years and willexplore many international thermonuclear experimental reactor (ITER) related LH experiments inthe following years.