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Microstructure investigation and multicolor upconversion in Yb3+/Ln3+(Ln=Er/Tm/ho) ions doped α-Sialon

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Progress in Natural Science:Materials International 2019年第5期29卷 549-555页

作者： Sang hoon Jeong Yuwaraj K.Kshetri seung ho kim Sung Hun Cho Soo W.Lee Department of Environment and Bio-Chemical Engineering Sun Moon University Research Center for Eco Multi-Functional Nano Materials Sun Moon University The Institute of Scientific and Industrial Research (ISIR) Osaka University

Yb3+/Ln3+(Ln=Er/Tm/ho)-α-sialon ceramics were fabricated by hot press sintering *** microstructure and luminescent properties were studied by XRD,EDS,HRTEM and photoluminescence *** results showed that the sintered ceramics consisted ofα-Sialon with a trace amount ofβ-Sialon *** frequency upconversion and downconversion properties of Yb3+/Ln3+(Ln=Er/Tm/ho)-α-Sialon ceramics were investigated under 980 nm low-power *** different concentrations of Yb3+/Ln3+(Ln=Er/Tm/ho)produced multicolor emissions characteristics of each Ln3+ion as a result of the energy transfer from Yb3+to Er3+,Tm3+and ho3+*** EDS spectra measurements and mappings showed that the Ln3+ions were well incorporated in theα-Sialon *** evolution of the emission decay behavior has been investigated to understand the energy transfer mechanism.

关键词： α-Sialon hot press sintering Upconversion Energy transfer

Mass-forming ischemic colitis that mimics colon cancer

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Chinese Medical Journal 2020年第10期133卷 1253-1254页

作者： ho seung kim Fozan Sauri Jae Hyun Kang Nam Kyu kim Division of Colorectal Surgery Department of SurgerySeverance HospitalYonsei University College of MedicineSeoul 03722Korea.

To the Editor:Rarely,ischemic colitis can also mimic a carcinoma during colonoscopy and on computed tomography(CT)*** colonoscopy,an ulceration,a submucosal mass,and a narrowed colon segment with an ulcerated mucosa have all been described as mimicking this kind of *** reports have documented this type of mass-forming ischemic colitis variant.[1-4]Here,we described two patients with ischemic colitis who presented with lesions mimicking colon cancer.

关键词： colon cancer. colitis

Assessment and management of low anterior resection syndrome after sphincter preserving surgery for rectal cancer

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Chinese Medical Journal 2020年第15期133卷 1824-1833页

作者： Ahmad Sakr Fozan Sauri Mohammed Alessa Eman Zakarnah homoud Alawfi Radwan Torky ho seung kim seung Yoon Yang Nam Kyu kim Division of Colorectal Surgery Department of SurgerySeverance HospitalYonsei University College of MedicineSeoul 03722Korea Colorectal Surgery Unit Department of General SurgeryMansoura Faculty of MedicineMansoura University HospitalsMansoura 35511Egypt ‘Department of General Surgery King Faisal UniversityAlahsa 31982Saudi Arabia Department of General Surgery Main hospitalAssiut Faculty of MedicineAssiut UniversityAssiut 71511Egypt

Many patients develop a variety of bowel dysfunction after sphincter preserving surgeries(SPS)for rectal *** bowel dysfunction usually manifests in the form of low anterior resection syndrome(LARS),which has a negative impact on the patients'quality of *** study reviewed the LARS after SPS,its mechanism,risk factors,diagnosis,prevention,and treatment based on previously published *** history taking,physical examination of the patients,using validated questionnaires and other diagnostic tools are important for assessment of LARS *** of LARS should be tailored to each *** therapy is usually needed for patients with major LARS with acceptable *** treatment includes conservative management in the form of medical,pelvic floor rehabilitation and transanal irrigation and invasive procedures including *** this treatment failed,fecal diversion may be *** conclusion,Initial meticulous dissection with preservation of nerves and creation of a neorectal reservoir during anastomosis and proper Kegel exercise of the anal sphincter can minimize the occurrence of ***-treatment counseling is an essential step for patients who have risk factors for developing LARS.

关键词： Bowel dysfunction Low anterior resection syndrome Rectal cancer Sphincter-preserving surgery

Triple synchronous primary neoplasms in the gastrointestinal tract

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Chinese Medical Journal 2021年第10期134卷 1233-1235页

作者： Fozan Mohammed Sauri Eman Adnan Zakarneh Mohammed Yousef Alessa Ahmad Hammad Sakr Yeon seung Chung ho seung kim Nam kyu kim Department of Surgery Colorectal DivisionYonsei University College of MedicineSeoul120-752South Korea Department of General Surgery King Faisal UniversityAlahsa 31982Saudi Arabia Colorectal Surgery Unit Department of General SurgeryMansoura Faculty of MedicineMansoura University HospitalMansoura 35511Egypt Department of Pathology Yonsei University College of MedicineSeoul 120-752South Korea

To the Editor:Most of the multiple primary malignancies are metachronous or involve more than one system,we instead describe a case with synchronous triple cancers involving one organ *** study was approved by the Institutional Review Board of Severance hospital,Yonsei University(IRB No.4-2019-0889).A 61-year old man who had no chronic illness,underwent abdominal computerized tomography(CT)scan due to vague abdominal complains and was found to have descending colon wall thickening[Figure 1A],colon cancer(cT3N+)was *** is not smoker or alcohol drunker,and has no family history of malignancies.

关键词： neoplasms colon Figure

A Retroperitoneal Inflammatory Myofibroblastic Tumor Mimicking a Germ Cell Tumor of the Undescended Testis: A Case Report and Literature Review

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Advances in Computed Tomography 2016年第3期5卷 35-41页

作者： Seul-Bi Lee Jung-Hee Yoon seung-ho kim Yedaun Lee Jin-Soo Lee Jung-Wook Seo Department of Radiology Inje University Haeundae Paik Hospital College of Medicine Busan South Korea Department of Radiology Inje University Ilsan Paik Hospital College of Medicine Goyang-si South Korea

We report here a case of an inflammatory myofibroblastic tumor in the retroperitoneum, which mimicked a germ cell tumor of the undescended testis. A 75-year-old healthy man presented with a palpable abdominal mass. On the computed tomography image, there was large, well-defined soft tissue mass in the left side of the retroperitoneum, and there was no visible left testis or seminal vesicle. After contrast enhancement, the mass appeared to be relatively homogeneous, considering its large size. With ultrasonography, it appeared as a well-defined, hypoechoic mass with intratumoral vascularity. This solid mass was surgically diagnosed as an inflammatory myofibroblastic tumor.

关键词： Inflammatory Myofibroblastic Tumor Computed Tomography Ultrasonography Retroperitoneal

Apolipoprotein A-I binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang seunghwan Choi Soo-ho Choi Keun-Young kim Yury I.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye Institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and Imaging Research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

A Flexible Smart Healthcare Platform Conjugated with Artificial Epidermis Assembled by Three‑Dimensionally Conductive MOF Network for Gas and Pressure Sensing

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Nano-Micro Letters 2025年第2期17卷 601-620页

作者： Qingqing Zhou Qihang Ding Zixun Geng Chencheng Hu Long Yang Zitong Kan Biao Dong Miae Won hongwei Song Lin Xu Jong seung kim State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea TheranoChem Incorporation Seoul 02856Republic of Korea

The rising flexible and intelligent electronics greatly facilitate the noninvasive and timely tracking of physiological information in telemedicine *** building bionic-sensitive moieties is vital for designing efficient electronic skin with advanced cognitive functionalities to pluralistically capture external ***,realistic mimesis,both in the skin’s three-dimensional interlocked hierarchical structures and synchronous encoding multistimuli information capacities,remains a challenging yet vital need for simplifying the design of flexible logic ***,we construct an artificial epidermal device by in situ growing Cu_(3)(HHTP)_(2) particles onto the hollow spherical Ti_(3)C_(2)T_(x) surface,aiming to concurrently emulate the spinous and granular layers of the skin’s *** bionic Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2) exhibits independent NO_(2) and pressure response,as well as novel functionalities such as acoustic signature perception and Morse code-encrypted message ***,a wearable alarming system with a mobile application terminal is self-developed by integrating the bimodular senor into flexible printed *** system can assess risk factors related with asthmatic,such as stimulation of external NO_(2) gas,abnormal expiratory behavior and exertion degrees of fingers,achieving a recognition accuracy of 97.6%as assisted by a machine learning *** work provides a feasible routine to develop intelligent multifunctional healthcare equipment for burgeoning transformative telemedicine diagnosis.

关键词： Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2)composites NO_(2)/pressure flexible sensors Health-monitoring Machine learning

Comparison of different nutritional assessments in detecting malnutrition among gastric cancer patients

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World Journal of Gastroenterology 2010年第26期16卷 3310-3317页

作者： seung Wan Ryu In ho kim Department of Surgery and Division of Gastrointestinal Surgery The Keimyung University School of Medicine Daegu 700-712 South Korea

AIM: To evaluate the prevalence of preoperative and postoperative malnutrition and the relationships between objective and subjective nutritional assessment of gastric cancer patients. METhoDS: From October 2005 to July 2006, we studied 80 patients with no evidence of recurrent disease and no loss to follow-up after curative surgery for gastric cancer. In this group, 9 patients underwent total gastrectomy and 71 patients subtotal gastrectomy. At admission, 6 and 12 mo after surgery, the patients were assessed on the subjective global assessment (SGA), nutritional risk screening (NRS-2002), nutritional risk index (NRI) and by anthropometric measurements and laboratory data. Differences between the independent groups were assessed with the Student's t test and oneway analysis of variance. Spearman's rank correlation coefficients were calculated to evaluate the association between the scores and variables. RESULTS: The prevalence of malnutrition at admissionwas 31% by SGA and 43% by NRS-2002. At admission, the anthropometric data were lower in the malnourished groups defined by the SGA and NRS-2002 assessments, but did not differ between the groups using the NRI assessment. Body weight (BW), body mass index (BMI), triceps skin fold and midarm circumference were significantly reduced, but the total lymphocyte count, albumin, protein, cholesterol and serum iron levels did not decrease during the postoperative period. Six months after surgery, there was a good correlation between the nutritional assessment tools (SGA and NRS-2002) and the other nutritional measurement tools (BW, BMI, and anthropometric measurements). however, 12 mo after surgery, most patients who were assessed as malnourished by SGA and NRS-2002 had returned to their preoperative status, although their BW, BMI, and anthropometric measurements still indicated a malnourished status. CONCLUSION: A combination of objective and subjective assessments is needed for the early detection of the nutritional status

关键词： Gastrectomy Malnutrition Nutritional assessment Nutritional risk screening Postoperative follow up Subjective global assessment

Adhesion and Suction Functions of the Tip Region of a Nectar-drinking Butterfly Proboscis

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Journal of Bionic Engineering 2017年第4期14卷 600-606页

作者： seung Chul Lee Jun ho kim Sang Joon Lee Department of Mechanical Engineering Pohang University of Science and Technology Pohang 37673 Gyeongbuk Republic of Korea Center for Biofluid and Biomimic Research Pohang University of Science and Technology Pohang 37673 Gyeongbuk Republic of Korea

In this study, we investigated the dynamic functions of the tip region of the butterfly proboscis through which liquid is sucked during liquid feeding. The microstructures and flow patterns in the tip region of the proboscis were in vivo analyzed. The tip region can be divided into two functional sections： namely adhesion and suction sections. The liquid adheres to the adhesion section during liquid suction. Although the tip region has numerous slits connected to food canal of the proboscis, liquid is mainly sucked through the suction section, which section is submerged in the fluid pulled by the adhesion section and then successfully imbibes liquid. To check the dynamic functions of the tip region, we fabricated a suction tip model having adhesion and suction parts. The in vitro model experiments show that the hydrophilicity of the adhesion part and the existence of the suction inlet improve the liquid uptake driven by a suction pump. This study may provide insights for the biomimetic design of nectar-feeding butterflies.

关键词： butterfly proboscis nectar-feeding strategy suction