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Heterostructures in two-dimensional colloidal metal chalcogenides:Synthetic fundamentals and applications

Nano Research 2019年第8期12卷 1750-1769页

作者： Yuho Min Eunmi Im Geon-Tae Hwang Jong-Woo Kim Cheol-Woo Ahn Jong-Jin Choi byung-dong hahn Joon-Hwan Choi Woon-Ha Yoon dong-Soo Park dong Choon Hyun Geon Dae Moon Functional Ceramics Department Powder & Ceramics DivisionKorea Institute of Materials Science (KIMS)ChangwonGyeongnam51508Republic of Korea Department of Polymer Science and Engineering Kyungpook National UniversityDaegu41566Republic of Korea dongrtam Regional Division Korea Institute of Industrial TechnologyBusan46938Republic of Korea

As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures.

关键词： metal chalcogenide heterostructure anisotropic nanomaterials two-dimensional (2D) nanomaterials solution-based synthesis

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***,vision-based navigation and the PG master’s degree programme at HfT Stuttgart

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Geo-Spatial Information Science 2023年第2期26卷 156-159页

作者： Michael hahn Faculty of Geomatics Computer Science and MathematicsStuttgart University of Applied SciencesStuttgartGermany

The two topics of the article seem to have absolutely nothing to do with each other and,as can be expected in a contribution in honor and memory of *** Ackermann,they are linked in his ***-based Navigation was the focus of the doctoral thesis written by the author,the 29th and last PhD thesis supervised by *** International Master’s Program Photogrammetry and Geoinformatics,which the author established with colleagues at Stuttgart University of Applied Sciences(HfT Stuttgart)in 1999,was a consequence of ***’s benevolent promotion of international knowledge transfer in *** topics are reflected in this article;they provide further splashes of color in ***’s oeuvre.

关键词： Vision-based navigation visual odometry photogrammetry and geoinformatics international master’s degree program

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Current status of robot-assisted gastric surgery

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World Journal of Gastrointestinal Oncology 2011年第10期3卷 137-143页

作者： Se-Jin Baek dong-Woo Lee Sung-Soo Park Seon-hahn Kim Department of Surgery Korea University College of MedicineMIS Robotic Surgery Center Korea University Medical Center Korea University Anam Hospital Seoul 136-705South Korea Robotic Surgery Center Korea University Medical Center Division of Upper GI Surgery Department of SurgeryKorea University College of MedicineMIS Division of Colorectal Department of SurgeryKorea University College of MedicineMIS

In an effort to minimize the limitations of laparoscopy,a robotic surgery system was introduced,but its role for gastric cancer is still *** objective of this article is to assess the current status of robotic surgery for gastric cancer and to predict future *** the current study was limited by its small number of patients and retrospective nature,robot-assisted gastrectomy with lymphadenectomy for the treatment of gastric cancer is a feasible and safe procedure for experienced laparoscopic *** studies have reported satisfactory results for postoperative short-term coutcomes,such as:postoperative oral feeding,gas out,hospital stay and complications,compared with laparoscopic surgery;the difference is a longer operation ***,robotic surgery showed a shallow learning curve compared with the familarity of conventional open surgery;after the accumulation of several cases,robotic surgery could be expected to result in a similar operation ***-assisted gastrectomy can expand the indications of minimally invasive surgery to include advanced gastric cancer by improving the ability to perform ***," total" robotic gastrectomy can be facilitated using a robotsewing technique and gastric submucosal tumors near the gastroesophageal junction or pylorus can be resected safely by this novel *** conclusion,robotassisted gastrectomy may offer a good alternative to conventional open or laparoscopic surgery for gastric cancer,provided that long-term oncologic outcomes can be confirmed.

关键词： Robot surgery Stomach Minimally invasive surgery

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Stretching the limits of maximal voluntary eccentric force production in vivo

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Journal of Sport and Health Science 2018年第3期7卷 275-281页

作者： Daniel hahn Human Movement Science Faculty of Sport Science Ruhr-University Bochum School of Human Movement and Nutrition Sciences University of Queensland

During eccentric contractions,muscular force production capacity is enhanced compared to isometric *** this is well accepted in terms of muscle mechanics,maximal voluntary eccentric contractions are associated with neural inhibition that prevents increased force production of in vivo human ***,because it was shown that maximal voluntary eccentric forces can exceed maximum isometric forces by a factor of 1.2-1.4,this review focuses on the question of whether the absent eccentric force enhancement,as observed in many studies,can unambiguously be attributed to an inherent neural ***,we demonstrate that participant familiarization,preload,and fascicle behavior are crucial factors influencing maximal voluntary eccentric force ***,we show that muscle mechanics such as muscle length,lengthening velocity,and stretch amplitude interact when it comes to maximal voluntary eccentric force ***,we discuss the diverging findings on neural inhibition during maximal voluntary eccentric *** there was no inhibition of the major motor pathways in the presence of enhanced maximal voluntary eccentric forces,further research is needed to test the concept of neural inhibition and to understand why maximal voluntary force production is reduced compared to the force capacity of isolated muscle preparations.

关键词： Active lengthening Eccentric contraction Inhibition Muscle Neural control

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NONLINEAR DYNAMICS OF A CRACKED ROTOR IN A MANEUVERING AIRCRAFT

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Applied Mathematics and Mechanics(English Edition) 2004年第10期25卷 1139-1150页

作者：林富生孟光 Eric hahn State Key Laboratory of Vibration Shock and Noise Shanghai Jiaotong University School of Mechanical and Manufacturing Engineering The University of New South Wales

The nonlinear dynamics of a cracked rotor system in an aircraft maneuvering with constant velocity or acceleration was investigated. The influence of the aircraft climbing angle on the cracked rotor system response is of particular interest and the results show that the climbing angle can markedly affect the parameter range for bifurcation, for quasi-periodic response and for chaotic response as well as for system stability. Aircraft acceleration is also shown to significantly affect the nonlinear behavior of the cracked rotor system, illustrating the possibility for on-line rotor crack fault diagnosis.

关键词： cracked rotor maneuvering aircraft nonlinear response fault diagnosis

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Multifaceted progress in high-field superconducting magnet mechanics

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Acta Mechanica Sinica 2024年第4期40卷 1-3页

作者： Xingzhe Wang Seungyong hahn Key Laboratory of Mechanics on Western Disaster and Environment Ministry of EducationCollege of Civil Engineering and MechanicsLanzhou UniversityLanzhou 730000China Department of Electrical and Computer Engineering Seoul National UniversitySeoul 08826Republic of Korea

High-field superconducting magnets are poised to revolutionize technologies,including particle accelerators,magnetic resonance imaging(MRI)machines,and fusion *** stand at the frontier of superconductor ***_(3)Sn wires,which operate at cold temperatures,along with rare-earth barium copper oxide(REBCO)coated conductors that include rare earth elements like Y,Gd,and Dy,are gaining *** high electrical efficiency in strong magnetic fields makes them particularly attractive for such advanced applications.

关键词： Nb_(3)Sn field earth

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Relationship between diversion colitis and quality of life in rectal cancer

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World Journal of Gastroenterology 2013年第4期19卷 542-549页

作者： dong Nyoung Son dong Jin Choi Si Uk Woo Jin Kim Bo Ra Keom Chul Hwan Kim Se Jin Baek Seon hahn Kim Colorectal Division Department of SurgeryKorea University Anam Hospital Korea University College of Medicine Seoul 136-705South Korea Department of Surgery Sun General HospitalDaejeon 301-747South Korea Department of Surgery Gangseo Song-do HospitalSeoul 139-711South Korea Department of Gastroenterology Korea University Anam Hospital Department of Pathology Korea University Anam Hospital

AIM:To investigated the incidence of diversion colitis(DC) and impact of DC symptoms on quality of life(QoL) after ileostomy reversal in rectal ***:We performed a prospective study with 30 patients who underwent low anterior resection and the creation of a temporary ileostomy for the rectal cancer between January 2008 and July 2009 at the Department of Surgery,Korea University Anam *** participants totally underwent two rounds of the *** first examination,endoscopies,tissue biopsies,and questionnaire survey about the symptom were performed 3-4 mo after the ileostomy *** second examination,endoscopies,tissue biopsies,and questionnaire survey about the symptom and QoL were performed 5-6 mo after the ileostomy *** data were based on the histopathological reports and clinical records of the ***:At the first examination,all of the patients presented with inflammation,which was mild in 15(50%) patients,moderate in 11(36.7%) and severe in 4(13.3%) by endoscopy and mild in 14(46.7%) and moderate in 16(53.3%) by *** the second examination,only 11(36.7%) and 17(56.7%) patients had mild inflammation by endoscopy and histology,*** was no significant difference in DC grade between the endoscopic and the histological findings at first or second *** symptoms detected on the first and second questionnaires were mucous discharge in 12(40%) and 5(17%) patients,bloody discharge in 5(17%) and 3(10%) patients,abdominal pain in 4(13%) and 2(7%) patients and tenesmus in 9(30%) and 5(17%) patients,*** found no correlation between the endoscopic or histological findings and the symptoms such as mucous discharge,bleeding,abdominal pain and tenesmus in both time *** was detected in 9 patients at the second examination;this number correlated with the severity of DC(0%,0%,66.7%,33.3% vs 0%,71.4%,23.8%,4.8%,P = 0.001) and the symptom-related QoL(r =-0.791,P

关键词： Diversion colitis Quality of life Diarrhea Ileostomy Rectal cancer

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Hepatocellular adenoma in the paediatric population:Molecular classification and clinical associations

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World Journal of Gastroenterology 2020年第19期26卷 2294-2304页

作者： Elan hahn Juan Putra Division of Pathology Department of Paediatric Laboratory Medicinethe Hospital for Sick ChildrenToronto M5G 1X8ONCanada Department of Laboratory Medicine and Pathobiology University of TorontoToronto M5S 1A8ONCanada

Hepatocellular adenomas(HCAs)represent rare,benign liver tumours occurring predominantly in females taking oral *** children,HCAs comprise less than 5%of hepatic tumours and demonstrate association with various *** contemporary classification of HCAs,based on their distinctive genotypes and clinical phenotypes,includes hepatocyte nuclear factor 1 homeobox alpha-inactivated HCAs,beta-catenin-mutated HCAs,inflammatory HCAs,combined beta-catenin-mutated and inflammatory HCAs,sonic hedgehogactivated HCAs,and unclassified *** children,there is a lack of literature on the characteristics and distribution of HCA *** this review,we summarized different HCA subtypes and the clinicopathologic spectrum of HCAs in the paediatric population.

关键词： Paediatric Hepatocellular adenoma Malignant transformation Beta-catenin HNF1A Glycogen storage disorders

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Heat shock and other apoptosis-related proteins as therapeutic targets in prostate cancer

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Asian Journal of Andrology 2014年第3期16卷 359-363页

作者： Costantine Albany Noah M hahn Indiana University Health Melvin and Bern Simon Cancer Center Indianapolis IN USA.

Defects within apoptotic pathways have been implicated in prostate cancer （PCa） tumorigenesis, metastatic progression and treatment resistance. A hallmark of cancers is the ability to derail apoptosis by inhibiting the apoptotic signal, reducing the expression of apoptotic proteins and/or amplifying survival signals through increased production of antiapoptotic molecule. This review describes associations between heat shock proteins （HSPs） and the human androgen receptor （AR）, the role of HSPs and other stress-induced proteins in PCa development and emerging strategies in targeting these protective proteins to treat PCa.

关键词： apatorsen apoptosis bcl-2 homologous antagonist-killer protein clusterin custirsen ganetespib heat-shock proteins prostatic neoplasms

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Ultralong persistent luminescence from carbon dots

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Light(Science & Applications) 2022年第6期11卷 1019-1020页

作者： Seunghyup Yoo Youngjin Song Sangin hahn School of Electrical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea

Hour-level persistent luminescence is realized with carbon dots embedded in cyanuric acid,the composition of which is easily obtained by the microwave-assisted heating of carbon dots and *** forming donor-acceptor blends,the proposed composition yields intermediate states with long lifetimes,providing a rare-earth-metal-free route to ultralong persistent luminescence.

关键词： luminescence donor microwave

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