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Jonghwan Choi,Sangil Kim,Seunghun Jung,Seunggwan Shin 한국응용곤충학회 2024 한국응용곤충학회 학술대회논문집 Vol.2024 No.04
Urbanization is a driving force of global biodiversity changes, and species that successfully adapt to city environments can become pests with the assistance of human factors. Here we present the first genomic data of Plecia longiforceps, an invasive pest exhibiting intensive outbreaks in the Seoul Metropolitan Area of Korea. HiFi and Pore-C sequencing data were used to construct a highly continuous genome assembly with a total size of 707 Mb and 8 major pseudochromosomes. Gene annotation using transcriptome data and ab initio predictions revealed significant numbers of genes related to detoxification and heat tolerance. Comparison to the Bibio marci genome showed high levels of synteny with some regions of chromosomal rearrangement. Our data will serve as an essential resource for population and functional genomic studies on dispersal and outbreaks of P. longiforceps, and facilitate research on eco-evolutionary processes of dipterans in urbanizing habitats.
Effect of early enteral nutrition after hepatectomy in hepatocellular carcinoma patients
Jonghwan Lee,Choon Hyuck David Kwon,Jong Man Kim,Milljae Shin,Jae-Won Joh 한국간담췌외과학회 2012 한국간담췌외과학회지 Vol.16 No.4
Backgrounds/Aims: To evaluate the effect of early enteral nutrition after hepatectomy in hepatocellular carcinoma (HCC) patients on postoperative gastrointestinal motility recovery and admission days, liver function and nutrition recovery, and postoperative complication. Methods: From August 2010 to July 2011, 102 patients with primary HCC underwent hepatectomy. Forty two patients took a sip of water (SOW) at postoperative day (POD)#1, soft blended diet (SBD) at POD#2 (early diet group, ED group), otherwise 60 patients took a SOW at POD#3, SBD at POD#4 (conventional diet group, CD group). Postoperative flatus-pass day, stool-pass day, nausea, vomiting, admission days, immediate postoperative (POD#0) and POD#1, 3, 5, 7 profiles of albumin, prothrombin time (PT) INR, total bilirubin, aspartate aminotransferase (AST), alanine aminotransferase (ALT), white blood cell (WBC), and POD#1, 3, 5, 7 profiles of C-reactive protein (CRP), and postoperative complications cases were compared between ED group and CD group. All clinical data were compared retrospectively. Results: Flatus-pass days (p<0.01), stool-pass days (p<0.01) and postoperative admission days (p=0.012) were shorter in ED group. Total bilirubin levels were higher at POD#0, 1, 3 but lower or similar at POD#5, 7 in ED group. AST, ALT levels were higher at POD#0 but lower at POD#1, 3, 5. There were no significant differences in albumin, PT INR, WBC, CRP and postoperative complication rates. Conclusions: ED group had no difference in nutritional recovery and postoperative complication rates compared to CD group but it has better gastrointestinal motility recovery, liver function recovery, and shorter postoperative admission days. (Korean J Hepatobiliary Pancreat Surg 2012;16:129-133)
Shin, Jae Sung,Oh, Seong Yong,Park, Hyunmin,Chung, Chin-Man,Seon, Sangwoo,Kim, Taek-Soo,Lee, Lim,Lee, Jonghwan Elsevier 2018 Optics and lasers in engineering Vol.100 No.-
<P><B>Abstract</B></P> <P>A cutting study with a high-power ytterbium-doped fiber laser was conducted for the dismantling of nuclear facilities. Stainless steel and carbon steel plates of various thicknesses were cut at a laser power of 6-kW. Despite the use of a low output of 6-kW, the cutting was successful for both stainless steel and carbon steel plates of up to 100 mm in thickness. In addition, the maximum cutting speeds against the thicknesses were obtained to evaluate the cutting performance. As representative results, the maximum cutting speeds for a 60-mm thickness were 72 mm/min for the stainless steel plates and 35 mm/min for the carbon steel plates, and those for a 100-mm thickness were 7 mm/min for stainless steel and 5 mm/min for carbon steel plates. These results show an efficient cutting capability of about 16.7 mm by kW, whereas other groups have shown cutting capabilities of ∼10 mm by kW. Moreover, the maximum cutting speeds were faster for the same thicknesses than those from other groups. In addition, the kerf widths of 60-mm and 100-mm thick steels were also obtained as another important parameter determining the amount of secondary waste. The front kerf widths were ∼1.0 mm and the rear kerf widths were larger than the front kerf widths but as small as a few millimeters.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A cutting study with a high power ytterbium-doped fiber laser was conducted for application to dismantling of nuclear facilities. </LI> <LI> Stainless steel and carbon steel plates of various thicknesses were cut at a laser power of 6-kW. </LI> <LI> Despite the use of a low output of 6-kW, the cutting was successful for both stainless steel and carbon steel plates up to 100 mm in thickness. </LI> <LI> The cutting capability was ∼16.7 mm by kW which is much higher than commonly known value, and the maximum cutting speeds were faster for the same thicknesses than those from other groups. </LI> </UL> </P>
Shin, Jae Sung,Oh, Seong Yong,Park, Hyunmin,Chung, Chin-Man,Seon, Sangwoo,Kim, Taek-Soo,Lee, Lim,Lee, Jonghwan Elsevier 2018 Annals of nuclear energy Vol.122 No.-
<P><B>Abstract</B></P> <P>The cutting performance of thick steel plates and large size pipes with a 10 kW fiber laser was studied for the dismantling of nuclear facilities. First, thick steel plates of up to 100 mm were tried to be cut at a high speed. For the thickness of 100 mm, both stainless steel and carbon steel plates were cut at maximum cutting speeds of ∼30 mm/min. And narrow kerf widths of less than 5 mm were obtained for all cutting tests. Second, a 150-mm thick stainless steel plate near the cutting thickness limit was attempted to be cut. The specimen was able to be cut even with a low cutting speed of 3 mm/min. To the best of our knowledge, this thickness is the largest among the published reports with a laser power of 10 kW. And this corresponds to a cutting capability in which most thick structures in a nuclear reactor can be cut. In addition, large size stainless steel pipes were also attempted to be cut. For a 165 mm diameter pipe, it was possible to be cut at high speed by one scan at a speed of 50 mm/min and round trip scan at a speed of 100 mm/min. This result implies that high-speed cutting was also possible for most pipe-type components inside the nuclear reactor. As a result, our 10-kW laser cutting system showed very efficient cutting performance in terms of the cutting speed and thickness. Moreover, the cuttings showed narrow kerf widths of less than 5 mm even for very thick steel of up to 150 mm in thickness. In the future, it is expected that the results of this work will contribute to cutting thick metal structures as basic research data in the dismantling of nuclear facilities using a laser. In addition, it is also expected that this work will contribute to other industrial fields requiring a thick steel cutting technique.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Cutting of thick steel plates and large pipes with a 10 kW fiber laser was studied. </LI> <LI> Stainless steel and carbon steel plates of up to 100 mm were cut at a high speed. </LI> <LI> A 150-mm thick stainless steel plate was also able to be cut. </LI> <LI> A 165 mm diameter pipe was possible to be cut. </LI> <LI> Our system showed efficient cutting performance in terms of speed and thickness. </LI> </UL> </P>
Shin, Jae Sung,Oh, Seong Y.,Park, Seung-Kyu,Kim, Taek-Soo,Park, Hyunmin,Lee, Jonghwan Korean Radioactive Waste Society 2021 방사성폐기물학회지 Vol.19 No.3
For application in nuclear decommissioning, underwater laser cutting studies were conducted on thick stainless-steel plates for various cutting directions using a 6 kW fiber laser. For cutting along the horizontal direction with horizontal laser irradiation, the maximum cutting speed was 110 mm·min<sup>-1</sup> for a 48 mm thick stainless-steel plate. For cutting along the vertical direction with horizontal laser irradiation, a maximum speed of 120 mm·min<sup>-1</sup> was obtained for the same thickness, which confirmed that the cutting performance was similar but slightly better. Moreover, when cutting with vertically downward laser irradiation, the maximum cutting speed was 120 mm·min<sup>-1</sup> for a plate of the same thickness. Thus, the cutting performance for vertical irradiation was nearly identical to that for horizontal irradiation. In conclusion, it was possible to cut thick stainless-steel plates regardless of the laser irradiation and cutting directions, although the assist gas rose up due to buoyancy. These observations are expected to benefit laser cutting procedures during the actual dismantling of nuclear facilities.
박희수,Shin Tae Gun,Kim Won Young,조유환,Hwang Yoon Jung,최성혁,Lim Tae Ho,Han Kap Su,Shin Jonghwan,Suh Gil Joon,Kang Gu Hyun,Kim Kyung Su 대한응급의학회 2022 Clinical and Experimental Emergency Medicine Vol.9 No.2
Objective We investigated the effects of a quick Sequential Organ Failure Assessment (qSOFA)–negative result (qSOFA score <2 points) at triage on the compliance with sepsis bundles among patients with sepsis who presented to the emergency department (ED).Methods Prospective sepsis registry data from 11 urban tertiary hospital EDs between October 2015 and April 2018 were retrospectively reviewed. Patients who met the Third International Consensus Definitions for Sepsis and Septic Shock criteria were included. Primary exposure was defined as a qSOFA score ≥2 points at ED triage. The primary outcome was defined as 3-hour bundle compliance, including lactate measurement, blood culture, broad-spectrum antibiotics administration, and 30 mL/kg crystalloid administration. Multivariate logistic regression analysis to predict 3-hour bundle compliance was performed.Results Among the 2,250 patients enrolled in the registry, 2,087 fulfilled the sepsis criteria. Only 31.4% (656/2,087) of the sepsis patients had qSOFA scores ≥2 points at triage. Patients with qSOFA scores <2 points had lower lactate levels, lower SOFA scores, and a lower 28-day mortality rate. Rates of compliance with lactate measurement (adjusted odds ratio [aOR], 0.47; 95% confidence interval [CI], 0.29–0.75), antibiotics administration (aOR, 0.64; 95% CI, 0.52–0.78), and 30 mL/kg crystalloid administration (aOR, 0.62; 95% CI, 0.49–0.77) within 3 hours from triage were significantly lower in patients with qSOFA scores <2 points. However, the rate of compliance with blood culture within 3 hours from triage (aOR, 1.66; 95% CI, 1.33–2.08) was higher in patients with qSOFA scores <2 points.Conclusion A qSOFA-negative result at ED triage is associated with low compliance with lactate measurement, broad-spectrum antibiotics administration, and 30 mL/kg crystalloid administration within 3 hours in sepsis patients.