http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Measurement of cross sections for proton-induced reactions on natural Zn
Park, Jun Kue,Jung, Myung-Hwan,Hwang, Yong Seok,Kim, Chorong,Cho, Won-Je,Yang, Sung-Chul Elsevier 2019 Nuclear instruments & methods in physics research. Vol.449 No.-
<P><B>Abstract</B></P> <P>We present the cross sections for the <SUP> nat </SUP> Zn ( p , x ) <SUP> 67 </SUP> Cu and <SUP> nat </SUP> Zn ( p , x ) <SUP> 67 </SUP> Ga reactions within a proton energy range of 47.5–99.2 MeV. We efficiently separated the overlapping gamma-ray spectra of the two isotopes <SUP> 67 </SUP> Cu and <SUP> 67 </SUP> Ga , using an analytical method without radiochemical separation. The present data were compared with previous data from the literature, typically obtained by radiochemical separation before measuring the gamma-ray spectra of the two isotopes. Our results for the two isotopes generally showed greater or smaller values than those reported in the literature, except for some data concerning partial energy ranges, which were in agreement with the literature data. The present data were also compared with the TENDL-2017 library based on the TALYS code.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A developed efficient analytical separation method of two radioisotopes, <SUP>67</SUP>Cu and <SUP>67</SUP>Ga. </LI> <LI> The first data for <SUP>nat</SUP>Zn(<I>p</I>,<I>x</I>)<SUP>67</SUP>Cu reaction obtained by using the analytical separation method. </LI> <LI> The present data being compared with those of the literature and the TENDL-2017 library. </LI> </UL> </P>
Electron Paramagnetic Resonance Study of Al-incorporated ZnO:Mn Diluted Magnetic Semiconductors
Jun Kue Park,K.W. Lee,D. M. Choi,Cheol Eui Lee 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.12
We have employed electron paramagnetic resonance spectroscopy and magnetization measurements in order to study the effect of Al-incorporation on the magnetic interactions in ZnO:Mn diluted magnetic semiconductors. Al-doping is shown to decrease the antiferromagnetic correlation and to increase the ferromagnetic interaction, which is attributed to the hydrogen-mediated ferromagnetic Mn complexes in our Mn-doped ZnO samples.
박영수,서정훈,정재복,송시영,황영웅,장혁재,이준규,이진헌,이세준,정준표,강진경 대한소화기학회 2001 대한소화기학회지 Vol.38 No.4
Background/Aims: The only hope for the cure of pancreatic adenocarcinoma is curative resection. However, the rate of recurrence after curative resection is higher than 50%. The aim, of this study were to analyze survival and the factors influencing survival and to evaluate the recurrence rate and pattern after curative resection of pancreatic adenocarcinoma. Methods: The records of 250 patients who were diagnosed as pancreatic cancer were reviewed retrospectively. We classified the patients into 3 groups (curative resection, non-curative resection, and conservative treatment) and analyzed the factors influencing survival, recurrence rate, and recurrence pattern after curative resection. Results: Curative resection were performed in 31 (12.4%) of 250 cases. The patients with curative resection was significantly prolonged median survival time than those without non-curative resection or with conservative treatment. The factors influencing survival rate after curative resection were age, lymph node involvement, and disease status. Twenty-five of the 31 cases with curative resection had recurrences after 10 months. Local retroperitoneal recurrence was 69%. Liver metastasis and lymph node metastasis were occurred in 61% and 54%, respectively. Conclusions: The survival time of the patients with pancreatic adenocarcinoma was prolonged in the cases of curative resection compared with the cases of non-curative resection or conservative treatment. However, most cases after curative resection showed recurrence. Thus, early diagnosis and early treatment should be needed to prolong the survival time of the patients with pancreatic adenocarcinoma.
Park, Si-Nae,Sung, Shi-Joon,Sim, Jun-Hyoung,Yang, Kee-Jeong,Hwang, Dae-Kue,Kim, JunHo,Kim, Gee Yeong,Jo, William,Kim, Dae-Hwan,Kang, Jin-Kyu The Royal Society of Chemistry 2015 Nanoscale Vol.7 No.25
<P>Nanoporous p-type semiconductor thin films prepared by a simple solution-based process with appropriate thermal treatment and three-dimensional (3D) p-n junction solar cells fabricated by depositing n-type semiconductor layers onto the nanoporous p-type thin films show considerable photovoltaic performance compared with conventional thin film p-n junction solar cells. Spin-coated p-type Cu2ZnSnS4(CZTS) thin films prepared using metal chlorides and thiourea show unique nanoporous thin film morphology, which is composed of a cluster of CZTS nanograins of 50-500 nm, and the obvious 3D p-n junction structure is fabricated by the deposition of n-type CdS on the nanoporous CZTS thin films by chemical bath deposition. The photovoltaic properties of 3D p-n junction CZTS solar cells are predominantly affected by the scale of CZTS nanograins, which is easily controlled by the sulfurization temperature of CZTS precursor films. The scale of CZTS nanograins determines the minority carrier transportation within the 3D p-n junction between CZTS and CdS, which are closely related with the photocurrent of series resistance of 3D p-n junction solar cells. 3D p-n junction CZTS solar cells with nanograins below 100 nm show power conversion efficiency of 5.02%, which is comparable with conventional CZTS thin film solar cells.</P>