http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김지훈,강태식,한길영,김재열,심재기 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.4
In this paper, an investigation was performed on the dynamic interlaminar fracture toughness of CFRP(carbon fiber reinforcement plastics). Specimens used in this experiment are CF/PEEK laminated plates. In this experiments, Split Hopkin-son's Bar(SHPE) test was apply to dynamic and notched flexure test. The mode II fracture toughness of each unidirectional CFRP was estimated by the analyzed deflection of the specimen and J-integral with the measured impulsive load and reac-tions at the supported points. As an experimental result the vibration amplitude of [0˚_10/F_4/0˚_10] laminates appear more than that of [0˚_10/F_2/0˚_10] laminates for the J-integral and displacement velocity at a measuring point. Also, it is thought that the dynamic fracture toughness of two kind specimen(CF/PEEK) with the in crease of displacement velocity becomes great at a measuring point with in the range of measurement.
Sim, Sung Hoon,Beom, Seung‐,Hoon,Ahn, Yong‐,Oon,Keam, Bhumsuk,Kim, Tae Min,Lee, Se‐,Hoon,Kim, Dong‐,Wan,Heo, Dae Seog Wiley-Blackwells 2016 Thoracic cancer Vol.7 No.2
<P><B>Abstract</B></P><P><B>Background</B></P><P>The neutrophil‐lymphocyte ratio (NLR) is a marker of poor prognosis in lung cancer patients. However, previous data have been based on an heterogeneous population of lung cancer patients and various treatments. In this study, we evaluate the prognostic value of NLR in an homogeneous population of epidermal growth factor receptor (EGFR)‐mutant non‐small cell lung cancer (NSCLC) patients.</P><P><B>Methods</B></P><P>We restrospectively evaluated the data of 250 NSCLC patients with EGFR mutations. All data are based on first‐line treatment.</P><P><B>Results</B></P><P>All tumors harbored in‐frame deletions in exon 19 or an L858R point mutation. Eighty‐five patients were treated with tyrosine kinase inhibitors (TKIs), while 165 received cytotoxic chemotherapy as first‐line treatment. Multivariate survival analysis revealed that the NLR was a significant prognostic factor for first‐line progression‐free survival (PFS) in the chemotherapy group (hazard ratio [HR] 1.882, 95% confidence interval [CI] 1.319–2.686, <I>P</I> = 0.001), but was not significant in the TKI group (HR 1.239, 95% CI 0.693–2.215, <I>P</I> = 0.469). The response rate (RR) to first‐line treatment was 76.5% in the TKI group and 29.5% in the chemotherapy group; however, the RR, according to the NLR (≤3 vs. > 3), was the same for both groups.</P><P><B>Conclusions</B></P><P>The NLR was a significant prognostic factor in the chemotherapy group, but it did not affect either RR or PFS in EGFR‐mutant NSCLC patients treated with TKIs.</P>
Sim, In Ok,Bae, Ok Yeon,Kim, Tae Hoon Korean Academy of Child Health Nursing 2021 Child Health Nursing Research Vol.27 No.1
Purpose: While clinical practice is crucial for nursing students to acquire the skills needed to provide professional, high-quality nursing care, further studies on improving undergraduate nursing programs are needed to provide a supportive clinical learning environment for student nurses. This study aimed to understand nursing students' clinical experiences in newborn nurseries and neonatal intensive care units and to provide basic data for the establishment of strategies to promote effective clinical education. Methods: Interviews were held with 15 nursing students at J University who had clinical practice experience in the newborn nursery and neonatal intensive care unit. The collected data were analyzed using the phenomenological analysis method developed by Colaizzi (1978). Results: The nursing students' experiences were grouped into four categories: "expectations for and anxiety about clinical practice", "acquisition of a wide range of knowledge regarding neonatal nursing", "challenges faced in clinical practice", and "experiencing interpersonal changes". Conclusion: The current neonatal practice nursing education system provides students with positive learning experiences. However, the lack of practice opportunities, insufficient instruction, and the theory-practice gap were identified as major issues hindering students' learning needs. These study results are expected to provide basic data for curriculum development to improve undergraduate nursing education.
Distribution patterns of Monochamus alternatus and M. saltuarius (Coleoptera: Cerambycidae) in Korea
Tae Sung Kwon,Jong Hwan Lim,Sang Jun Sim,Young Dae Kwon,Sung Kil Son,Kooi Yong Lee,Yeon Tae Kim,Ji Won Park,Chang Hoon Shin,Seok Bong Ryu,Chong Kyu Lee,Sang Chul Shin,Yeong Jin Chun 한국임학회 2006 한국산림과학회지 Vol.95 No.5