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Curative resection of leiomyosarcoma of the descending colon with metachronous liver metastasis: A case report

World Journal of Gastrointestinal Surgery 2023年第5期15卷 992-999页

作者： Soo-Hyeon Lee Sang-Ho Bae Sang-Cheol Lee Tae-Sung Ahn Zisun Kim hae-il jung Department of Surgery Soonchunhyang University Cheonan HospitalCheonan 31151ChungnamSouth Korea Department of Internal Medicine Soonchunhyang University Cheonan HospitalCheonan 31151ChungnamSouth Korea Department of Surgery Soonchunhyang University Bucheon HospitalBucheon 14584GyeonggiSouth Korea

BACKGROUND Leiomyosarcoma(LMS)has a poor prognosis and rarely originates from the *** resection is possible,surgery is the first treatment most commonly ***,no standard treatment exists for hepatic metastasis of LMS;although,several treatments,such as chemotherapy,radiotherapy,and surgery,have been ***,the management of liver metastases remains *** SUMMARY We present a rare case of metachronous liver metastasis in a patient with LMS originating from the descending colon.A 38-year-old man initially reported abdominal pain and diarrhea over the previous two *** revealed a 4-cm diameter mass in the descending colon,40 cm from the anal *** tomography revealed intussusception of the descending colon due to the 4-cm *** patient underwent a left *** analysis of the tumor revealed that it was positive for smooth muscle actin and desmin,and negative for cluster of differentiation 34(CD34),CD117,and discovered on gastrointestinal stromal tumor(GIST)-1,which are characteristic of gastrointestinal LMS.A single liver metastasis developed 11 mo postoperatively;the patient subsequently underwent curative resection *** patient remained disease-free after six cycles of adjuvant chemotherapy(doxorubicin and ifosfamide),and 40 and 52 mo after liver resection and primary surgery,*** cases were obtained from a search of Embase,PubMed,MEDLINE,and Google *** Early diagnosis and surgical resection may be the only potential curative options for liver metastasis of gastrointestinal LMS.

关键词： Leiomyosarcoma Colon Liver metastasis Surgical resection Treatment Case report

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Adrenal lymphangioma masquerading as a pancreatic tail cyst

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World Journal of Gastroenterology 2014年第36期20卷 13195-13199页

作者： hae il jung Taesung Ahn Myoung Won Son Zisun Kim Sang Ho Bae Moon Soo Lee Chang Ho Kim Hyon Doek Cho Department of Surgery Soonchunhyang University Cheonan Hospital Cheonan 330-721South Korea Department of Surgery Soonchunhyang Universit Bucheon Hospital Bucheon 420-767 South Korea Department of Pathology Soonchunhyang University Cheonan Hospital Cheonan 330-721 South Korea

Cystic lymphangiomas of the adrenal gland are rare. A 79-year-old female presented in the emergency room with epigastric discomfort, and an immovable mass was palpated in her abdomen upon physical examination. Imaging studies revealed a large cystic lesion in the pancreatic tail. The radiologic impression ruled out the possibility of a mucinous cystic neoplasm, or a pseudocyst in the pancreas. The operative findings demonstrated that the cystic mass originated in the left adrenal gland. A laparoscopic excision of the cystic mass was performed, and immunohistochemistry confirmed that this mass was a lymphangioma of the adrenal gland. Several prior reports have suggested that lymphangioma can mimic renal or splenic cysts. However, lymphangioma cases mimicking pancreatic cysts are very rare.

关键词： Lymphangioma Adrenal gland Pancreas Cyst Mucinous neoplasm

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The H∞ Robust Stability and Performance Conditions for Uncertain Robot Manipulators

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 270-272页

作者： Geun il Song hae Yeon Park jung Hoon Kim the Department of Electrical Engineering Pohang University of Science and Technology (POSTECH) the Department of Electrical Engineering Pohang University of Science and Technology (POSTECH) the Institute for Convergence Research and Education in Advanced Technology Yonsei University

Dear Editor,H∞This letter develops a new framework for the robust stability and performance conditions as well as the relevant controller synthesis with respect to uncertain robot *** often exist model uncertainties between the nominal model and the real robot manipulator and disturbances. Hence, dealing with their effects plays a crucial role in leading to high tracking performances, as discussed in [1]–[5].

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Enhancing Building Facade Image Segmentation via Object-Wise Processing and Cascade U-Net

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Computers, Materials & Continua 2024年第11期81卷 2261-2279页

作者： haemin jung Heesung Park hae Sun jung Kwangyon Lee Department of Industrial&Management Engineering Korea National University of TransportationChungju27469Republic of Korea Department of Industrial Engineering Yonsei UniversitySeoul03722Republic of Korea Department of Applied Artificial Intelligence Sungkyunkwan UniversitySeoul03063Republic of Korea School of Electronic Engineering Soongsil UniversitySeoul06978Republic of Korea

The growing demand for energy-efficient solutions has led to increased interest in analyzing building facades,as buildings contribute significantly to energy consumption in urban ***,conventional image segmentation methods often struggle to capture fine details such as edges and contours,limiting their effectiveness in identifying areas prone to energy *** address this challenge,we propose a novel segmentation methodology that combines object-wise processing with a two-stage deep learning model,Cascade ***-wise processing isolates components of the facade,such as walls and windows,for independent analysis,while Cascade U-Net incorporates contour information to enhance segmentation *** methodology involves four steps:object isolation,which crops and adjusts the image based on bounding boxes;contour extraction,which derives contours;image segmentation,which modifies and reuses contours as guide data in Cascade U-Net to segment areas;and segmentation synthesis,which integrates the results obtained for each object to produce the final segmentation *** to a dataset of Korean building images,the proposed method significantly outperformed traditional models,demonstrating improved accuracy and the ability to preserve critical structural ***,we applied this approach to classify window thermal loss in real-world scenarios using infrared images,showing its potential to identify windows vulnerable to energy ***,our Cascade U-Net,which builds upon the relatively lightweight U-Net architecture,also exhibited strong performance,reinforcing the practical value of this *** approach offers a practical solution for enhancing energy efficiency in buildings by providing more precise segmentation results.

关键词： Building facade image image segmentation edge detection

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Geometry effect on mechanical properties of woven fabric composites

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Journal of Central South University 2011年第6期18卷 1985-1993页

作者： KIM Myungsoo SONG jung-il School of Mechatronics Changwon National University

The effects of geometry on mechanical properties in woven fabric composites were explored. Two types of composites, including one-layered and two-layered composites, were designed and studied. For one-layered composites, inter-strand gap effects on the mechanical properties were studied, while three cases of geometries with inter-strand gaps in two-layered composites were evaluated. A woven fiber micromechanics analytical model called MESOTEX was employed for theoretical simulation. The predicted results show that the inter-strand gap and simple variation of the strand positions in a repeating unit cell significantly affect the mechanical properties of woven fabric composites.

关键词： woven fabric composites inter-strand gap mechanical properties micromechanics modeling

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Discovering High-Quality Threaded Discussions in Online Forums

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Journal of Computer Science & Technology 2014年第3期29卷 519-531页

作者： jung-Tae Lee Min-Chul Yang hae-Chang Rim Department of Computer and Radio Communications Engineering Korea UniversitySeoul 136-713Korea

Archives of threaded discussions generated by users in online forums and discussion boards contain valuable knowledge on various topics. However, not all threads are useful because of deliberate abuses, such as trolling and flaming, that are commonly observed in online conversations. The existence of various users with different levels of expertise also makes it difficult to assume that every discussion thread stored online contains high-quality contents. Although finding high-quality threads automatically can help both users and search engines sift through a huge amount of thread archives and make use of these potentially useful resources effectively, no previous work to our knowledge has performed a study on such task. In this paper, we propose an automatic method for distinguishing high-quality threads from low-quality ones in online discussion sites. We first suggest four different artificial measures for inducing overall quality of a thread based on ratings of its posts. We then propose two tasks involving prediction of thread quality without using post rating information. We adopt a popular machine learning framework to solve the two prediction tasks. Experimental results on a real world forum archive demonstrate that our method can significantly improve the prediction performance across all four measures of thread quality on both tasks. We also compare how different types of features derived from various aspects of threads contribute to the overall performance and investigate key features that play a crucial role in discovering high-quality threads in online discussion sites.

关键词： online forum discussion board thread quality

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Comparison of contrast sensitivity based on the surgical results for intermittent exotropia

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International Journal of Ophthalmology(English edition) 2019年第11期12卷 1725-1730页

作者： hae Rang Kim Soo jung Lee Department of Ophthalmology Haeundae Paik Hospital Inje University College of Medicine

AIM: To compare contrast sensitivity(CS) based on the surgical results for intermittent exotropia(IXT) and to examine the relationship between CS and ***: Medical records of the patients who underwent bilateral lateral rectus muscle recession for IXT between 4 and 12 years old were reviewed retrospectively. They were categorized based on the surgical results;successful correction group(n=36) and overcorrection group(esotropia ≥10 PD at 3 mo postoperatively, n=18). Using CGT-2000 test for CS was performed binocularly, and subjective reports of photophobia was investigated preoperatively and at 3 mo postoperatively. Objective photophobia was defined as a significant decrease in CS in the presence of ***: Preoperatively, there was no difference in CS between the groups. Postoperatively, under mesopic conditions, significant improvement of CS was observed at 6.3°, 4°, and 2.5° in the successful correction group and at 6.3° and 4° in the overcorrection group, regardless of glare. Under photopic conditions, at all visual angles except 0.64°, improvement in CS was noted in both groups while CS worsened significantly at 0.64° in the overcorrection group postoperatively. At all visual angles under photopic conditions postoperatively, regardless of glare, CS in the overcorrected group was significantly worse than that in the successful correction group, and CS was significantly decreased by addition of glare in both groups. All patients except one(96.4%) in the successful correction group and 8 patients(61.5%) in overcorrection group showed improvement of photophobia postoperatively, which correlated with CS under photopic conditions(P=0.001, 0.03).CONCLUSION: After surgery for IXT, CS under photopic conditions improve at all visual angles except 0.64°, while CS is significantly worse in the overcorrection group postoperatively at 0.64°. Subjective photophobia havesignificant correlation with CS under photopic conditions, and may be used as an object

关键词： contrast sensitivity intermittent exotropia overcorrection photophobia success

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Synthesis of Fe_3O_4-coated silica aerogel nanocomposites

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中国有色金属学会会刊：英文版 2012年第S3期22卷 702-706页

作者： Jun Sung LEE Eun jung LEE hae Jin HWANG Devision of Materials Science and Engineering Inha University

Fe3O4:SiO2 nanocomposite powders were synthesized by a two-step process,which included the precipitation of FeCl2 and FeCl3 and the gelation of silicic acid solution derived from water *** first,Fe3O4 nanoparticles having a crystallite size of 20 nm were obtained by controlling the ratio of Fe(II) and Fe(III) *** the second step,Fe3O4 particles were embedded in SiO2 matrix by the hydrolysis and subsequent condensation of the silicic acid solution containing Fe3O4 *** was found that the Fe3O4 nanoparticles homogenously disperse in the SiO2 *** Fe3O4:SiO2 nanocomposite exhibited an enhanced thermal stability against oxidation compared with pure ***-IR analysis indicates the presence of the Si-O-Fe bond in the Fe3O4:SiO2 (1:10,mole fraction) nanocomposite.

关键词： nanocomposite Fe3O4 SiO2 sol gel synthesis

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Three-Tesla magnetic resonance elastography for hepatic fibrosis:Comparison with diffusion-weighted imaging and gadoxetic acid-enhanced magnetic resonance imaging

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World Journal of Gastroenterology 2014年第46期20卷 17558-17567页

作者： Hee Sun Park Young Jun Kim Mi Hye Yu Won Hyeok Choe Sung il jung hae Jeong Jeon Department of Radiology Konkuk University School of MedicineSeoul 143-729South Korea Digestive Disease Center Konkuk University School of MedicineSeoul 143-729South Korea

AIM: To evaluate the feasibility of 3-Tesla magnetic resonance elastography (MRE) for hepatic fibrosis and to compare that with diffusion-weighted imaging (DWI) and gadoxetic acid-enhanced magnetic resonance (MR) imag... 详细信息

关键词： Magnetic resonance elastography Hepatic fibrosis Diffusion weighted imaging Gadoxetic acid enhanced magnetic resonance imaging Serum markers

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Sand-polished Kapton film and aluminum as source of electron transfer triboelectric nanogenerator through vertical contact separation mode

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International Journal of Smart and Nano Materials 2020年第1期11卷 38-46页

作者： Ravi Kumar Cheedarala jung il Song Research Institute of Mechatronics Department of Mechanical EngineeringChangwon National UniversityUichang-guChangwon CityS.Korea

Contact electrification is a direct triboelectrification method for producing current through charge transfer when two different differentiated materials have brought into *** the first time,we developed a simple triboelectric nanogenerator(TENG)where the electronic charges were realized through contact separation mode between sand-polished Kapton(SPK)and Al ***,we demonstrated the energetic interfacial contact between these surfaces and observed satisfactory output *** novel SPK-TENG produced 40 V and 2.8μA,of open-circuit voltages(V_(oc))and short-circuit currents(Isc)at 4 Hz,***,the SPK-TENG was dramatically increased up the performance of TENG,up to 40% of V_(oc) and 42% of I_(sc),with respect to the Kapton film because the mobility of electrons is very high on the device surface compared to the other pristine Kapton *** fabricated SPK-TENGs were good candidates for satisfying the need for alternative contact separation mode TENGs.

关键词： Kapton contactelectrification K-Al TENG SPK-Al TENGs electron transfer mechanism

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