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A Novel Technology for Microwave Heated Wire Drawing Process

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A Novel Technology for Microwave Heated Wire Drawing Process

(Y,Gd)BO_3∶Eu的真空紫外光谱特性

先进纺织材料及加工技术国际学术会议

作者： Bo Keun Ha Jong Sung kim You Huh Dept. of Mechanical Eng. Graduate School Kyung Hee University Laboratory of Intelligent Process and Control Kyung Hee University Faculty of Mechanical and Industrial System Engineering Kyung Hee University

Recent growth of modern industry requires multi-functional inorganic and micron-sized fibers. In this study, we suggested a novel method that could offer a high-efficient dieless drawing technology for manufacturing thin metal fibers based on the hot working principle. Microwave was used as the heat source. Experimental trials on a laboratory rig showed that the new system worked effectively and provided the feasibility in realizing the diameter attenuation up to 20 % diameter reduction. The theoretical model describing the wire deformation behavior in the working zone turned out to be in a good accordance to the experiment partly. Discrepancy in the hot zone near the exit could be attributed to the heat loss in the heat chamber. The coefficient of variation of the drawn wire diameter increased, as the draw ratio increased, which indicated that an ironing step would be needed to improve the evenness of the wire diameter.

关键词： Microwave Hot zone Metal wire Dieless drawing Draw ratio Diameter reduction Coefficient of variation

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高等学校化学学报 2000年第11期21卷 1658-1660页

作者：吴雪艳洪广言曾小青尤洪鹏金昌弘卞锺洪裴淑贤庾炳容权一亿朴哲熙中国科学院长春应用化学研究所稀土化学与物理开放实验室长春130022 韩国科学技术研究院应用化学部

The (Y,Gd)BO 3∶Eu phosphor was synthesized by solid state reaction. The UV spectra showed that in a certain range of Gd 3+ concentration, more Gd 3+ absorbed energy and transferred it to Eu 3+ with its increasing concentration. From the spectra in VUV region, it was observed that both the doping and the concentrations of Gd 3+ , Eu 3+ greatly affected the absorption of the host lattice. The absorbances at 147 nm and 170 nm increased when the Gd 3+ was doped which can be explained as that Gd 3+ transferred energy to BO 4. The optical properties of (Y,Gd)BO 3∶Eu were the best when the concentration of Eu 3+ was about 0.04.

关键词： VUV光谱基质吸收带稀土发光材料荧光粉

Modeling and implementation of tandem polymer solar cells using wide-bandgap front cells

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Carbon Energy 2020年第1期2卷 131-142页

作者： Seo-Jin Ko Hyosung Choi Quoc Viet Hoang Chang Eun Song Pierre-Olivier Morin Jungwoo Heo Mario Leclerc Sung Cheol Yoon Han Young Woo Won Suk Shin Bright Walker Jin Young kim Division of Advanced Materials Korea Research Institute of Chemical Technology(KRICT)DaejeonSouth Korea Department of Chemistry and Research Institute for Natural Sciences Hanyang UniversitySeoulSouth Korea Vietnam Certification Centre Directorate for StandardsMetrology and Quality(STAMEQ)HanoiVietnam Department of Chemistry Laval UniversityQuebec CityCanada Department of Energy Engineering Ulsan National Institute of Science and Technology(UNIST)UlsanSouth Korea Department of Chemistry Korea UniversitySeoulSouth Korea Department of Chemistry Kyung Hee UniversitySeoulSouth Korea

Tandem device architectures offer a route to greatly increase the maximum possible power conversion efficiencies(PCEs)of polymer solar cells,however,the complexity of tandem cell device fabrication(such as selecting bandgaps of the front and back cells,current matching,thickness,and recombination layer optimization)often result in lower PCEs than are observed in single-junction *** this study,we analyze the influence of front cell and back cell bandgaps and use transfer matrix modeling to rationally design and optimize effective tandem solar cell structures before actual device *** approach allows us to estimate tandem device parameters based on known absorption coefficients and open-circuit voltages of different active layer materials and design devices without wasting valuable time and *** this approach,we have investigated a series of wide bandgap,high voltage photovoltaic polymers as front cells in tandem devices with PTB7-Th as a back *** this way,we have been able to demonstrate tandem devices with PCE of up to 12.8%with minimal consumption of valuable photoactive materials in tandem device *** value represents one of the highest PCE values to date for fullerene-based tandem solar cells.

关键词： polymer solar cells solar cells tandem solar cells

Combination of anti-PD-L1 antibody with peptide MEL-dKLA targeting M2 tumor-associated macrophages suppresses breast cancer metastasis

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Cancer Communications 2022年第4期42卷 345-349页

作者： Chanju Lee Hyunji Lee Hayoon Cho Soyoung kim Ilseob Choi Young-Sik Hwang Hyunju Jeong Hogi Jang Sehyun Pak Deok-Sang Hwang Ik-Hwan Han Hyunsu Bae Department of Physiology College of Korean MedicineKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea Department of Science in Korean Medicine College of Korean MedicineKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea Cancer Immunology Branch National Cancer Center323 Ilsan-roIlsandong-guGoyang 10408Republic of Korea Department of Clinical Korean Medicine Graduate SchoolKyung Hee University26 Kyungheedae-roDongdaemoon-guSeoul 02447Republic of Korea

Dear editors,Breast cancer is a leading cause of cancer-related deaths worldwide and is the most common cancer among women[1].The cause of death in patients with breast cancer is not the primary tumor itself but mainly *** most common sites of breast cancer metastasis include the bones,lungs,brain,lymph nodes,and ***,lung metastasis has been a particular concern as it results in high patient morbidity and mortality rates[2].

关键词： metastasis breast mortality

Interplay between ABA and GA Modulates the Timing of Asymmetric Cell Divisions in the Arabidopsis Root Ground Tissue

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Molecular Plant 2016年第6期9卷 870-884页

作者： Shin Ae Lee Sejeong Jang Eun Kyung Yoon Jung-Ok Heo Kwang Suk Chang Ji Won Choi Souvik Dhar Gyuree kim Jeong-Eun Choe Jae Bok Heo Chian Kwon Jae-Heung Ko Yong-Sic Hwang Jun Lim Department of Systems Biotechnology Konkuk University Seour 05029 Korea Department of Molecular Biotechnology Dong-A University Busan 49201 Korea Department of Molecular Biology Dankook University Yongin 16890 Korea Department of Plant and Environmental New Resources Kyung Hee University Yongin 17104 Korea These authors contributed equally to this article. Present address: The Sainsbury Laboratory University of Cambridge Cambridge CB2 1LR United Kingdom Present address: Department of Life Science Research Institute for Natural Sciences Hanyang University Seoul 04763 Korea

In multicellular organisms, controlling the timing and extent of asymmetric cell divisions （ACDs） is crucial for correct patterning. During post-embryonic root development in Arabidopsis thaliana, ground tissue （GT） maturation involves an additional ACD of the endodermis, which generates two different tissues： the endo- dermis （inner） and the middle cortex （outer）. It has been reported that the abscisic acid （ABA） and gibberellin （GA） pathways are involved in middle cortex （MC） formation. However, the molecular mechanisms under- lying the interaction between ABA and GA during GT maturation remain largely unknown. Through transcriptome analyses, we identified a previously uncharacterized C2H2-type zinc finger gene, whose expression is regulated by GA and ABA, thus named GAZ （GA- AND ABA-RESPONSIVE ZINC FINGER）. Seedlings ectopically overexpressing GAZ （GAZ-OX） were sensitive to ABA and GA during MC formation, whereas GAZ-SRDX and RNAi seedlings displayed opposite phenotypes. In addition, our results indicated that GAZ was involved in the transcriptional regulation of ABA and GA homeostasis. In agreement with pre- vious studies that ABA and GA coordinate to control the timing of MC formation, we also confirmed the unique interplay between ABA and GA and identified factors and regulatory networks bridging the two hor- mone pathways during GT maturation of the Arabidopsis root.

关键词： ABA GA GRAS ground tissue root development transcription factor

Electroacupuncture for abdominal pain relief in patients with acute pancreatitis:A three-arm randomized controlled trial

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Journal of Integrative Medicine 2023年第6期21卷 537-542页

作者： Dong Kee Jang Jun Kyu Lee Chan Yung Jung Kyung Ho kim Ha Ra Kang Yeon Sun Lee Jong Hwa Yoon Kwang Ro Joo Min Kyu Chae Yong Hyeon Baek Byung-Kwan Seo Sang Hyub Lee Chiyeon Lim Department of Internal Medicine Seoul Metropolitan Government Boramae Medical CenterSeoul National University College of MedicineSeoul 07061Republic of Korea Department of Internal Medicine Dongguk University Ilsan HospitalDongguk University College of MedicineGoyang 10326Republic of Korea Department of Acupuncture and Moxibustion Dongguk University Ilsan Oriental HospitalCollege of Korean MedicineDongguk UniversityGoyang 10326Republic of Korea Department of Korean Medicine Dongguk UniversityGoyang 10326Republic of Korea Department of Acupuncture and Moxibustion College of Korean MedicineDongguk UniversityGyeongju 38067Republic of Korea Department of Gastroenterology Kyung Hee University Hospital at GangdongSeoul 05278Republic of Korea Department of Acupuncture and Moxibustion Kyung Hee University Korean Medicine Hospital at GangdongSeoul 05278Republic of Korea Department of Internal Medicine and Liver Research Institute Seoul National University HospitalSeoul National University College of MedicineSeoul 03080Republic of Korea Department of Biostatistics College of MedicineDongguk UniversityGoyang 10326Republic of Korea

Background: Electroacupuncture(EA) may reduce the severity of acute pancreatitis(AP) and provide additional pain relief in patients with chronic pancreatitis. However, the ability of EA to relieve pain in patients with AP has not been well ***: This study was undertaken to compare the pain-relieving effects of EA and conventional treatment in patients with ***, setting, participants and interventions: This study was conducted using a randomized, controlled,three-arm, parallel-group and multi-center design. Patients diagnosed with AP were randomly and equally assigned to EA1, EA2 or control groups. All participants received conventional standard-of-care therapy for AP. Local EA alone was administered in EA1, and local plus distal EA was given in *** EA included two abdominal acupoints, while distal EA included twelve peripheral acupoints. EA groups underwent one session of EA daily for 4 days(days 1–4), or until pain was resolved or *** outcome measures: The primary outcome measure was the change in the visual analogue scale(VAS;0–100) pain score between baseline and day ***: Eighty-nine participants were randomized into EA1, EA2 and control groups, and 88(EA1, 30;EA2, 29;control, 29) were included in the full-analysis set. VAS score change(median [interquartile range]) on day 5 was(12.3 ± 22.5) in the EA1 group,(10.3 ± 21.5) in the EA2 group, and(8.9 ± 15.2) in the control group. There were not significant differences in the change in VAS score among treatments(P = 0.983). However, time to food intake was significantly shorter in the EA group(EA1 + EA2) than in the control group(median 2.0 days vs 3.0 days), with a hazard ratio of 0.581(P = 0.022;95% CI,0.366–0.924). No significant adverse events ***: EA treatment did not significantly reduce pain after 4 days of treatment in patients with AP-associated abdominal pain but significantly reduced time to first food intake.

关键词： Acute pancreatitis Electroacupuncture Pain management Abdominal pain Randomized controlled trial

Laparoscopic cholecystectomy in patients with anesthetic problems

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World Journal of Gastroenterology 2013年第29期19卷 4832-4835页

作者： Bum-Soo kim Sun-Hyung Joo Jin-Hyun Joh Jae-Woo Yi Department of Surgery School of Medicine Kyung Hee University Seoul 134-727 South Korea Departments of Surgery and Anesthesiology and Pain Medicine School of Medicine Kyung Hee University Seoul 134-727 South Korea

Laparoscopic cholecystectomy is a standard operation for benign gallbladder disease. As experience with laparoscopic cholecystectomy has increased, the procedure has become possible in patients with anesthetic problems. Patients with ankylosing spondylitis or severe kyphosis represent a challenging group to anesthesiologists and laparoscopic surgeons since these diseases are associated with difficult intubation, restrictive ventilatory defects, and cardiac problems. The relatively new approach of awake fiberoptic intubation is considered to be the safest option for patients with anticipated airway difficulties. Laparoscopic cholecystectomy is usually performed under general anesthesia but considerable difficulties in anesthetic management are encountered during laparoscopic surgery; for example, hemodynamic instability may develop in patients with cardiopulmonary dysfunction due to pneumoperitoneum and position changes during the operation. Nonetheless, regional anesthesia can be considered as a valid option for patients with gallbladder disease who are poor candidates for general anesthesia due to cardiopulmonary problems. We report three cases of laparoscopic cholecystectomy successfully performed in patients with anesthetic problems that included cardiopulmonary disease, severe kyphosis, and ankylosing spondylitis.

关键词： Laparoscopic cholecystectomy Kyphosis Ankylosing spondylitis Anesthetic problems

Intraventricular chemotherapy through Ommaya reservoir at spinal metasteses from rectal cancer

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Intraventricular chemotherapy through Ommaya reservoir at sp...

^18F-FDG PET/CT显像能否鉴别诊断特发性肺纤维化患者的孤立性肺结节?

中国抗癌协会神经肿瘤专业委员会第八届学术会议

作者： Bong Jin Park Hyuk Jai Choi Seok Keun Choi Sung Bum kim Tae Sung kim Bong Arm Rhee Young Jin Lim Department of neurosurgery School of MedicineKyung Hee University Hospital

＜正＞Objective:It has been known that adenocarcinoma to metastasize brain treated to achieve good results by surgery or radiosurgery. But a case of adenocarcinoma to metastasize spinal cord via cerebrospinal fluid（...

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中华核医学与分子影像杂志 2018年第12期38卷 840-840页

作者：唐军(译) Suk Hyun Lee Changhwan Sung Hyo Sang Lee hee-young Yoon Soo-Jong kim Jungsu S.Oh Jin Woo Song Mi Young kim Jin-Sook Ryu 上海交通大学医学院附属苏州九龙医院核医学科 215021 Department of Nuclear Medicine Asan Medical Center University of Ulsan College of MedicineSeoul South Korea

目的特发性肺纤维化(IPF)患者的肺癌发生率高,患者肺功能差,易发生气胸,因此对CT发现的孤立性肺结节(SPN)不宜采用侵入性诊断方法,否则可能导致严重的不良后果。^18F-脱氧葡萄糖(FDG)PET/CT可用于非IPF患者SPN的良恶性鉴别,但在IPF患者... 详细信息

目的特发性肺纤维化(IPF)患者的肺癌发生率高,患者肺功能差,易发生气胸,因此对CT发现的孤立性肺结节(SPN)不宜采用侵入性诊断方法,否则可能导致严重的不良后果。^18F-脱氧葡萄糖(FDG)PET/CT可用于非IPF患者SPN的良恶性鉴别,但在IPF患者中的诊断准确性尚无研究。因此该研究拟调查^18F-FDGPET/CT是否能鉴别诊断IPF患者的SPN。方法回顾性分析来自该院的55例IPF患者[男54例、女1例,年龄(67.8±7.6)岁],患者SPN大小为8~30(18.5±5.7)mm,所有患者在2004年4月至2016年3月间行胸部CT和^18F-FDGPET/CT显像。对SPN的^18F-FDG摄取行视觉分析和半定量分析,图像结果与最终病理诊断(n=52)或影像学随访(n=3)结果进行比较。结果最终诊断结果表明,41个(75%)SPNs为恶性(21个鳞状细胞癌、9个腺癌、5个小细胞癌、4个混合类型癌、1个大细胞神经内分泌癌和1个肉瘤样癌),14个(25%)为良性。视觉分析PET/CT图像诊断SPN为恶性病变的灵敏度、特异性、阳性预测值(PPV)和阴性预测值(NPV)分别为98%、86%、95%和92%。使用最大标准摄取值(SUVmax)为2.0行半定量分析诊断的灵敏度、特异性、PPV和NPV分别为95%、93%、98%和87%。结论^18F-FDGPET/CT可用于IPF患者SPN的良恶性鉴别,如其用于非IPF患者一样。

关键词： ^18F-FDG 正电子发射断层显像术肺癌孤立性肺结节特发性肺纤维化