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Immediate secondary rhinoplasty using a folded dermofat graft for resolving complications related to silicone implants: A case report

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World Journal of Clinical Cases 2024年第14期12卷 2426-2430页

作者： Hoon Kim Jong Hyup Kim in chang koh Soo Yeon Lim Department of Plastic and Reconstructive Surgery Konyang University HospitalUniversity of Konyang College of MedicineMyunggok Medical Research InstituteDaejeon 35365South Korea

BACKGROUND Various surgical techniques have been developed to enhance the nose shapes of Asian *** implant augmentation rhinoplasty is widely used because it is relatively easy to perform and often yields satisfactory ***,this technique may lead to complications,including ischemia,necrosis,and *** most appropriate management of these complications,including infection,is immediate implant removal and revision surgery once the accompanying inflammation has ***,the patient may experience distress from nasal deformities during the intervention *** SUMMARY Herein,we describe the case of a patient who underwent a secondary dorsal augmentation,with a folded dermofat graft harvested from the inguinal area and simultaneous implant removal,successfully preventing dimpling of the nasal *** This surgical method can effectively manage implant-related complications following augmentation rhinoplasty using a silicone implant and provide satis-factory patient outcomes.

关键词： Complications Nose deformities Acquired Rhinoplasty Dermofat Surgery Plastic Case report

Deep learning for development of organic optoelectronic devices:efficient prescreening of hosts and emitters in deep-blue fluorescent OLEDs

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npj Computational Materials 2022年第1期8卷 1406-1416页

作者： Minseok Jeong Joonyoung F.Joung Jinhyo Hwang Minhi Han chang Woo koh Dong Hoon Choi Sungnam Park Department of Chemistry and Research Institute for Natural Science Korea UniversitySeoul02841Korea

The highest occupied molecular orbital(HOMO)and lowest unoccupied molecular orbital(LUMO)energies,which are key factors in optoelectronic devices,must be accurately estimated for newly designed ***,we developed a deep learning(DL)model that was trained with an experimental database containing the HOMO and LUMO energies of 3026 organic molecules in solvents or solids and was capable of predicting the HOMO and LUMO energies of molecules with the mean absolute errors of 0.058 ***,we demonstrated that our DL model was efficiently used to virtually screen optimal host and emitter molecules for organic light-emitting diodes(OLEDs).Deep-blue fluorescent OLEDs,which were fabricated with emitter and host molecules selected via DL prediction,exhibited narrow emission(bandwidth=36 nm)at 412 nm and an external quantum efficiency of 6.58%.Our DL-assisted virtual screening method can be further applied to the development of component materials in optoelectronics.

关键词： emitter optoelectronic OLEDs

Porocarcinoma in a palm reconstructed with a full thickness skin graft: A case report

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World Journal of Clinical Cases 2024年第3期12卷 665-670页

作者： Seok Beom Lim Kun Young Kwon Hoon Kim Soo Yeon Lim in chang koh Department of Plastic and Reconstructive Surgery Konyang University Medical CenterKonyang University of College of MedicineDaejeon 35365South Korea Department of Pathology Konyang University Medical CenterKonyang University of College of MedicineDaejeon 35365South Korea

BACKGROUND Porocarcinoma is a rare type of skin cancer that originates from sweat gland *** is an aggressive malignant skin cancer that is difficult to diagnose clinically owing to its rarity and similarity to squamous cell carcinoma(SCC).CASE SUMMARY This case involved a 92-year-old woman,a farmer by profession,presented with an exophytic and verrucous mass on her left palm that had formed 2 years prior and caused chronic pain and frequent ***,the patient was diagnosed with SCC using a punch biopsy;however,a repeat biopsy with addi-tional immunohistochemical tests was performed for ***,the patient was diagnosed with porocarcinoma and reconstruction was planned using a full-thickness skin *** treatment,the range of motion of the palm was preserved,and the aesthetic outcome was *** 6 mo of follow-up,the patient was satisfied with the *** Porocarcinoma is commonly misdiagnosed as SCC;therefore,clinicians should consider porocarcinomas when evaluating mass-like lesions on the hands.

关键词： Eccrine porocarcinoma Hand defects Reconstructive surgery Sweat gland tumor Skin graft Case report

Optimization of solvent swelling for efficient organic solar cells via sequential deposition

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Materials Reports(Energy) 2021年第4期1卷 77-83页

作者： Qiaogan Liao Bangbang Li Huiliang Sun chang Woo koh Xianhe Zhang Bin Liu Han Young Woo Xugang Guo Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055GuangdongPR China Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongPR China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001PR China Research Institute for Natural Sciences Department of ChemistryKorea UniversitySeoul 136-713South Korea

Compared to bulk heterojunction(BHJ)organic solar cells(OSCs)prepared by the blend casting in“one step process”,sequential deposition(SD)processed OSCs can realize an ideal profile of vertical component distribution due to the swelling of polymer ***,we did trials on several kinds of second solvents for swelling the polymer layer,and investigated the packing structure and morphology of the swollen films and the performance of the resulting *** found that an optimized morphology can be achieved by solvent swelling while using orthodichlorobenzene(o-DCB)as the second layer processing-solvent,with polymer donor PffBT-3 as bottom layer,PC71BM as top layer and bicontinuous networks in the *** solvent swelling process also makes the SD method exempt from thermal annealing *** device based on SD yields a power conversion effi-ciency(PCE)up to 8.7%without any post-treatment,outperforming those from the devices based on SD using other solvents and that(7.06%)from BHJ device,*** also extended the use of this approach to allpolymer blend system,and successfully improved the efficiency from 4.72%(chloroform)to 9.35%(o-DCB),which is among the highest PCEs in all-polymer-based OSCs fabricated with SD *** results demonstrate that the swelling of the polymer by the second layer solvent is a necessity for SD,paving the way towards additivefree high-performance OSCs.

关键词： Organic solar cells Bulk heterojunction Sequential deposition Solvent swelling Vertical phase separation Second solvent

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考虑硅钢片二维矢量磁特性的复数E&S模型

中国电机工程学报 2012年第3期32卷 144-149,3页

作者：刘洋张艳丽谢德馨白保东 koh chang Seop 沈阳工业大学电气工程学院辽宁省沈阳市110870 韩国忠北国立大学

电工材料电磁特性的精细模拟是决定电工装备电磁场分析与损耗计算正确与否的关键因素之一。提出了一种能够描述硅钢片二维矢量磁特性的复数E&S模型,该模型既能够考虑交变磁化,又能够考虑旋转磁化的影响。基于硅钢片二维磁特性测量实验,... 详细信息

电工材料电磁特性的精细模拟是决定电工装备电磁场分析与损耗计算正确与否的关键因素之一。提出了一种能够描述硅钢片二维矢量磁特性的复数E&S模型,该模型既能够考虑交变磁化,又能够考虑旋转磁化的影响。基于硅钢片二维磁特性测量实验,提出了利用1个周期内磁能密度平均值计算模型中有效磁阻系数,利用磁滞损耗密度计算有效磁滞系数的方法。推导了结合复数E&S模型的磁场有限元分析公式,并以环形铁心模型为例,将复数E&S模型与传统E&S模型的计算结果进行了对比研究,指出复数E&S模型与有限元结合时既能够节省计算时间又能够保证材料特性模拟的准确性,是一种更适用于工程应用的矢量磁特性模型。

关键词：复数磁特性模型有效磁阻系数有效磁滞系数磁场能量密度铁心损耗硅钢片

耦合改进型矢量磁滞模型的变压器磁场分析及实验研究

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中国电机工程学报 2010年第21期30卷 109-113页

作者：张艳丽刘洋谢德馨 koh chang-Seop 沈阳工业大学电气工程学院辽宁省沈阳市110870 韩国忠北国立大学

为了准确分析变压器、电机等电工设备的磁性能,在基于传统Chua-type模型的基础上,提出了一种直接描述电工钢片磁场强度H与磁通密度B数学关系的改进型矢量磁滞模型,其中模型参数由单片电工钢片磁特性测量系统获得;推导了不同轧制方向磁... 详细信息

为了准确分析变压器、电机等电工设备的磁性能,在基于传统Chua-type模型的基础上,提出了一种直接描述电工钢片磁场强度H与磁通密度B数学关系的改进型矢量磁滞模型,其中模型参数由单片电工钢片磁特性测量系统获得;推导了不同轧制方向磁滞模型的数学表达式,讨论了耦合该磁滞模型的时步有限元计算的收敛性,并通过对单相变压器铁心模型磁场的实验测试,验证了耦合磁滞模型有限元分析的有效性。

关键词：有限元分析矢量磁滞模型单相变压器铁心电工钢片二维测量装置

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基于二维磁特性测量的电工钢片矢量磁滞模型

中国电机工程学报 2010年第3期30卷 130-135页

作者：张艳丽何厚键谢德馨 koh chang-seop 沈阳工业大学电气工程学院辽宁省沈阳市110870 中国科学院沈阳自动化研究所辽宁省沈阳市110016 韩国忠北国立大学

提出一种模拟电工钢片复杂磁特性的矢量磁滞模型。该模型考虑频率、磁化历史等因素对磁滞特性的影响,模型中磁滞系数与磁阻系数的确定是基于双激励二维磁特性测量实验获得的,在实验中通过对磁通密度变化轨迹的控制实现对磁场强度波形的... 详细信息

提出一种模拟电工钢片复杂磁特性的矢量磁滞模型。该模型考虑频率、磁化历史等因素对磁滞特性的影响,模型中磁滞系数与磁阻系数的确定是基于双激励二维磁特性测量实验获得的,在实验中通过对磁通密度变化轨迹的控制实现对磁场强度波形的测量。所提出的模型既避免了传统磁滞模型数学表达的复杂性,又提高了模拟的准确度,更适用于工程应用。通过与传统模型及实验测量结果的比较,证明了所提出的模型能更有效、更准确地模拟电工钢片的复杂磁特性。

关键词：矢量磁滞模型电工钢片磁滞系数磁阻系数

Hidradenocarcinoma of the Dorsum of the Hand

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Chinese Medical Journal 2017年第14期130卷 1755-1756页

作者： Wan Cheol Ryu Yong Hae Lee in chang koh Jang Sihn Sohn Se Min Jang Department of Plastic and Reconstructive Surgery Konyang University Hospital Konyang University College of Medicine Daejeon Korea Department of Pathology Konyang University Hospital Konyang University College of Medicine Daejeon Korea

Hidradenocarcinoma originates in the eccrine glands located in sun-exposed areas and accounts for approximately 6% of malignant eccrine tumors and 〈0.001% of all skin cancers.[1,2] Hidradenocarcinoma usually presents as a solitary,firm,asymptomatic intradermal nodule measuring 1-5 cm,covered by intact or occasionally ulcerated purple-,pink-,or blue-colored lesions.[1] While hidradenocarcinoma typically grows slowly over many years,it may suddenly undergo a rapid increase in *** differential diagnosis of hidradenocarcinoma is very challenging because the appearance of the lesion is benign and similar to that of other skin *** this report,we present the case of a patient with hidradenocarcinoma who was treated with wide excision and full-thickness skin grafting.

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Chronic intractable nontuberculous mycobacterial-infected wound after acupuncture therapy in the elbow joint:A case report

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World Journal of Clinical Cases 2024年第36期12卷 6926-6934页

作者： Jong Hyup Kim in chang koh Soo Yeon Lim Seong Hee Kang Hoon Kim Department of Plastic and Reconstructive Surgery Konyang University HospitalUniversity of Konyang College of MedicineMyunggok Medical Research InstituteDaejeon 35365South Korea Division of Infectious Diseases Department of Internal MedicineKonyang University HospitalUniversity of Konyang College of MedicineMyunggok Medical Research InstituteDaejeon 35365South Korea

BACKGROUND Musculoskeletal nontuberculous Mycobacterium(NTM)infections are rare,partic-ularly post-acupuncture therapy,and present diagnostic challenges due to their infrequency and potential *** recognition and appropriate manage-ment are crucial for optimal ***-infected wounds involving the joints are difficult to treat,and only a few cases have been *** SUMMARY We present a case of a chronic intractable NTM-infected wound on the elbow joint that completely healed with conservative wound care and antibiotic *** 81-year-old woman presented with a chronic,ulcerative wound on the right elbow joint where she had undergone repeated acupuncture therapy for chronic intolerable *** resonance imaging revealed synovial thickening,effusion,and subcutaneous cystic *** orthopedic surgeon performed open synovectomy and serial ***,1 month postoperatively,the wound had not healed and became chronic.A wound culture revealed NTM(Mycobacterium abscessus),and the patient was referred to the Department of Plastic and Reconstructive *** of surgical intervention,conservative wound care with intravenous antibiotics was provided,considering the wound status and the patient’s poor general *** wound healing was achieved in 12 months,with no impact on the range of motion of the elbow *** With clinical awareness,musculoskeletal NTM infection can be treated with conservative wound care and appropriate antimicrobial agents.

关键词： Nontuberculous mycobacteria Arthritis Infectious Acupuncture Chronic wound Case report