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Journal of Mountain Science 2005年第2期2卷 164-172页

作者： Eui-gyeong kim dong-jun kim Division of Forest Science Gyeongsang National UniversityChinju 660-701KoreaSchool of Forest ResourcesChungbuk National UniversityCheongju 361-763Korea

This study analyzed the causes of forest devastation,the characteristics of forest rehabilitation process,and the success factors of reforestation. And it reviewed the management of rehabilitated forest resources and identified the income sources of mountain villages in South Korea. The devastation of forest starting from the early twentieth century was continued to the 1950’s. The main causes of deforestation were the illegal cutting of trees for fuel and the slash-and-burning agriculture in forest. The success factors of reforestation were the decrease in the dependence on forest of fuel source,strict administration system and national participation. Sustainable forest management could be made possible through the practical use of social issues like public work project for prevention of landslide damages caused by the thinned logs left in the forest. Also it could be possible by making people realize that the public benefit was obtained from forest and the income sources of mountain villages were supplemented by non-timber forest products and tourism. Food and Agriculture Organization indicated Korea as the country that forestation was succeeded in a very short period. Korea seems to be not ordinary because economic growth was accomplished with rehabilitating natural environment. Korean forestation can become a good prototype of combining environmental rehabilitation and economic development.

关键词： Forestation forest management forest utilization South Korea

Is endoscopic ultrasonography essential for endoscopic resection of small rectal neuroendocrine tumors?

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World Journal of Gastroenterology 2017年第11期23卷 2037-2043页

作者： Su Bum Park dong jun kim Hyung Wook kim Cheol Woong Choi Dae Hwan Kang Su Jin kim Hyeong Seok Nam Department of Internal Medicine Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and TechnologyPusan National University Yangsan HospitalYangsanGyeongsangnam-do 626-770South Korea

AIM To evaluate the importance of endoscopic ultrasonography(EUS) for small(≤ 10 mm) rectal neuroendocrine tumor(NET) *** Patients in whom rectal NETs were diagnosed by endoscopic resection(ER) at the Pusan National University Yangsan Hospital between 2008 and 2014 were included in this study. A total of 120 small rectal NETs in 118 patients were included in this study. Histologic features and clinical outcomes were analyzed, and the findings of endoscopy, EUS and histology were compared. RESULTS The size measured by endoscopy was not significantly different from that measured by EUS and histology(r = 0.914 and r = 0.727 respectively). Accuracy for the depth of invasion was 92.5% with EUS. No patients showed invasion of the muscularis propria or metastasis to the regional lymph nodes. All rectal NETswere classified as grade 1 and demonstrated an L-cell phenotype. Mean follow-up duration was 407.54 ± 374.16 d. No patients had local or distant metastasis during the follow-up periods. CONCLUSION EUS is not essential for ER in the patient with small rectal NETs because of the prominent morphology and benign behavior.

关键词： Neuroendocrine tumor Small Rectal Endoscopic ultrasonography Histology Endoscopy

Endoscopic resection using band ligation for esophageal SMT in less than 10mm

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World Journal of Gastroenterology 2015年第10期21卷 2982-2987页

作者： Joung Boom Hong Cheol Woong Choi Hyung Wook kim Dae Hwan Kang Su Bum Park Su Jin kim dong jun kim Department of Internal Medicine Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital

AIM:To evaluate the safety and feasibility of endoscopic resection using band ligation(EMR-B) for the diagnostic and therapeutic removal of tumors located in the esophageal subepithelial region having originated from the ***:From May 2009 to September 2014,after medical chart and endoscopic ultrasonography report review,a total of 15 esophageal tumors located in the submucosal layer were resected by *** symptom,location,pathology,complete resection rate,incidence of complications,incidence of minor complication,size,length of procedures time and follow up months were *** evaluate local recurrence at the resection site,periodic follow-up endoscopic examination was undertaken in all of the *** first endoscopic examination was performed about 6 mo after the endoscopic ***,the endoscopic follow up were scheduled ***:The mean age was 50.3 ± 9.67 *** mean tumor size was 6.93 ± 3.15 mm and most of the lesions size was between 5-10 mm in diameter(10/15,66.6%).In all patients,endoscopic en bloc resection was *** one patient,the vertical margin was *** mean procedural time was 8.86 ± 3.66 *** all patients,no evidence of severe complications such as perforation or bleeding *** complications such as chest pain(2/15,13.3%) and heartburn(3/15,13.3%) were reported but they symptoms were controlled by proton pump inhibitors,ulcermin and/or *** assessments of the removed specimens revealed 10 granular cell tumors(66.6%),4 leiomyomas(16.6%) and one lipoma(6.6%).No recurrence was observed during the mean follow up period of 45 ± 3.5 mo(range:5-64 mo).CONCLUSION:EMR-B might be considered safe and effective for the diagnosis and treatment of lesions measuring less than 10 mm in diameter.

关键词： Band ligation Endoscopic mucosal resection Esophag

Phytogenic feed additives alleviate pathogenic Escherichia coli-induced intestinal damage through improving barrier integrity and inhibiting inflammation in weaned pigs

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Journal of Animal Science and Biotechnology 2023年第1期14卷 295-306页

作者： Se Yeon Chang Min Ho Song Ji Hwan Lee Han Jin Oh Yong Ju kim Jae Woo An Young Bin Go dong Cheol Song Hyun AhCho Seung Yeol Cho dong jun kim Mi Suk kim Hyeun Bum kim Jin Ho Cho Department of Animal Science Chungbuk National UniversityCheongju 28644South Korea. Division of Animal and Dairy Science Chungnam National UniversityDaejeon 34134South Korea. Eugene-Bio Suwon 16675South Korea. Department of Animal Resources Science Dankook UniversityCheonan 31116South Korea.

Background:This study was conducted to investigate the effects of each phytogenic feed additive(PFA;PFA1,bitter citrus extract;PFA2,a microencapsulated blend of thymol and carvacrol;PFA3,a mixture of bitter citrus extract,thymol,and carvacrol;PFA4,a premixture of grape seed,grape marc extract,green tea,and hops;PFA5,fenugreek seed powder)on the growth performance,nutrient digestibility,intestinal morphology,and immune response in weaned pigs infected with Escherichia coli(***).Results:A total of 634-week-old weaned pigs were placed in individual metabolic cages and assigned to seven treatment *** seven treatments were as follows:1)NC;basal diet without *** challenge,2)PC;basal diet with *** challenge,3)T1;PC+0.04%PFA1,4)T2;PC+0.01%PFA2,5)T3;PC+0.10%PFA3,6)T4;PC+0.04%PFA4,7)T5;PC+0.10%*** experiments lasted in 21 d,including 7 d before and 14 d after the first *** *** the *** challenge treatments,all pigs were orally inoculated by dividing a total of 10 mL of *** F18 for 3 consecutive *** PFA-added groups significantly increased(Pjunction

关键词： Barrier integrity Escherichia coli Immunity Phytogenic feed additive Post-weaning diarrhea Weaned pigs

Efficacy of cap-assisted colonoscopy according to lesion location and endoscopist training level

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World Journal of Gastroenterology 2015年第20期21卷 6261-6270页

作者： dong jun kim Hyung Wook kim Su Bum Park Dae Hwan Kang Cheol Woong Choi Joung Boom Hong Byoung Hoon Ji Chang Seok Lee Department of Internal Medicine Medical Research InstitutePusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital Department of Internal Medicine Dong-eui Medical Center Department of Internal Medicine Bongseng Memorial Hospital

AIM: To evaluate the efficacy of cap-assisted colonoscopy(CAC) for detection of colorectal polyps and adenomas according to the lesion location and endoscopist training ***: Patients 20 years or older, who underwent their first screening colonoscopy in a single tertiary center from May 2011 to December 2012 were enrolled in this study. All patients underwent either CAC or standard colonoscopy(SC), and all of the procedures were performed by 11 endoscopists(8 trainees and 3 experts). All procedures were performed with highdefinition colonoscopes and narrow band imaging. The eight trainees had experiences of performing 150 to 500 colonoscopies, and the three experts had experiences of performing more than 3000 colonoscopies. A 4-mmlong transparent cap was attached to the end of a colonoscope in the CAC group. We retrospectively evaluated the number of polyps and adenomas, polyp detection rate(PDR), and the number of adenomas and adenoma detection rate(ADR) according to the lesion location and endoscopist training level between CAC and SC. We also evaluated the number of polyps and adenomas according to their size between CAC and ***: Overall, PDR and ADR using CAC were significantly higher than those using SC for both whole colon(48.5% vs 40.7%, P = 0.012; 35.7% vs 28.3%, P = 0.012) and right-side colon(35.3% vs 26.6%, P = 0.002; 27.0% vs 16.9%, P < 0.001). The number of polyps and adenomas per patient using CAC was significantly higher than that using SC for both the whole colon(1.07 ± 1.59 vs 0.82 ± 1.31, P = 0.008; 0.72 ± 1.32 vs 0.50 ± 1.01, P = 0.003) and right-side colon(0.66 ± 1.18 vs 0.41 ± 0.83, P < 0.001; 0.46 ± 0.97 vs 0.25 ± 0.67, P < 0.001). In the trainee group, the PDR and ADR using CAC were significantly higher than those using SC for both the whole colon(46.7% vs 39.7%, P = 0.040; 33.9% vs 26.0%, P =0.012) and right-side colon(34.2% vs 26.5%, P = 0.015; 25.3% vs 15.9%, P = 0.001). In the expert group, the PDR and ADR using CAC were si

关键词： Colonoscopy Cap-assisted colonoscopy Colonic polyps Adenoma Colorectal neoplasm

Rectal tonsil:A case report and literature review

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World Journal of Gastroenterology 2015年第8期21卷 2563-2567页

作者： Joung Boom Hong Hyung Wook kim Dae Hwan Kang Cheol Woong Choi Su Bum Park dong jun kim Byoung Hoon Ji Kyung Won Koh Department of Internal Medicine Pusan National University School of Medicine Research Institute for Convergence of Biomedical Science and Technology Pusan National University Yangsan Hospital

The rectal tonsil,a reactive proliferation of lymphoidtissue located in the rectum,is ***,benign lymphoid hyperplasia of the rectum is usuallycharacterized by large lymphoid follicles with activegerminal centers and a narrow surrounding mantlezone and marginal *** lesion is benign,but must be differentiated from the polypoid type of mucosaassociated lymphoid tissue *** the current paper,we present a case of rectal tonsil in a 59-yearold *** describe the endoscopic ultrasound imaging findings with literature review.

关键词： Rectum Tonsil Lymphoid hyperplasia Rectal tonsil L

Effects of Flexible Conjugation-Break Spacers of Non-Conjugated Polymer Acceptors on Photovoltaic and Mechanical Properties of All-Polymer Solar Cells

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Nano-Micro Letters 2022年第10期14卷 164-177页

作者： Qiaonan Chen Yung Hee Han Leandro R.Franco Cleber F.N.Marchiori Zewdneh Genene CMoyses Araujo Jin-Woo Lee Tan Ngoc-Lan Phan Jingnan Wu donghong Yu dong jun kim Taek-Soo kim Lintao Hou Bumjoon J.kim Ergang Wang Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632People’s Republic of China Department of Chemistry and Chemical Engineering Chalmers University of TechnologySE-41296GöteborgSweden Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Engineering and Physics Karlstad University65188 KarlstadSweden Department of Chemistry and Bioscience Aalborg University9220 AalborgDenmark Department of Mechanical Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Materials Theory Division Department of Physics and AstronomyUppsala University75120 UppsalaSweden Sino-Danish Center for Education and Research 8000 AarhusDenmark School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001People’s Republic of China

All-polymer solar cells(all-PSCs)possess attractive merits including superior thermal stability and mechanical flexibility for large-area roll-to-roll *** flexible conjugation-break spacers(FCBSs)into backbones of polymer donor(P_(D))or polymer acceptor(P_(A))has been demonstrated as an efficient approach to enhance both the photovoltaic(PV)and mechanical properties of the ***,length dependency of FCBS on certain all-PSC related properties has not been systematically *** this regard,we report a series of new non-conjugated P_(A)s by incorporating FCBS with various lengths(2,4,and 8 carbon atoms in thioalkyl segments).Unlike com-mon studies on so-called side-chain engineering,where longer side chains would lead to better solubility of those resulting polymers,in this work,we observe that the solubilities and the resulting photovoltaic/mechanical properties are optimized by a proper FCBS length(i.e.,C2)in P_(A) named *** all-PSC achieves a high efficiency of 11.37%,and excellent mechanical robustness with a crack onset strain of 12.39%,significantly superior to those of the other P_(A)*** results firstly demonstrate the effects of FCBS lengths on the PV performance and mechanical properties of the all-PSCs,providing an effective strategy to fine-tune the structures of P_(A)s for highly efficient and mechanically robust PSCs.

关键词： All-polymer solar cells Flexible conjugation-break spacers Mechanical robustness Polymer acceptors Stretchability

High mobility group box 1 in the central nervous system:regeneration hidden beneath inflammation

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Neural Regeneration Research 2025年第1期20卷 107-115页

作者： Hanki kim Bum jun kim Seungyon Koh Hyo Jin Cho Xuelian Jin Byung Gon kim jun Young Choi Department of Brain Science Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Ajou University Graduate School of MedicineSuwonSouth Korea Department of Neurology Ajou University School of MedicineSuwonSouth Korea Department of Geriatrics The Affiliated Suqian First People’s Hospital of Nanjing Medical UniversitySuqianJiangsu ProvinceChina

High-mobility group box 1 was first discovered in the calf thymus as a DNA-binding nuclear protein and has been widely studied in diverse fields,including neurology and ***-mobility group box 1 in the extracellular space functions as a pro-inflammatory damage-associated molecular pattern,which has been proven to play an important role in a wide variety of central nervous system disorders such as ischemic stroke,Alzheimer’s disease,frontotemporal dementia,Parkinson’s disease,multiple sclerosis,epilepsy,and traumatic brain *** drugs that inhibit high-mobility group box 1 as a damage-associated molecular pattern,such as glycyrrhizin,ethyl pyruvate,and neutralizing anti-high-mobility group box 1 antibodies,are commonly used to target high-mobility group box 1 activity in central nervous system *** it is commonly known for its detrimental inflammatory effect,high-mobility group box 1 has also been shown to have beneficial pro-regenerative roles in central nervous system *** this narrative review,we provide a brief summary of the history of high-mobility group box 1 research and its characterization as a damage-associated molecular pattern,its downstream receptors,and intracellular signaling pathways,how high-mobility group box 1 exerts the repair-favoring roles in general and in the central nervous system,and clues on how to differentiate the pro-regenerative from the pro-inflammatory *** targeting high-mobility group box 1 in the central nervous system may benefit from differentiating between the two functions rather than overall suppression of high-mobility group box 1.

关键词： central nervous system damage-associated molecular pattern ethyl pyruvate glycyrhizzin high mobility group box 1 inflammation neural stem cells neurodevelopment oligodendrocyte progenitor cells redox status regeneration

Chalcogenoviologen Enhanced Host–Guest Recognition

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CCS Chemistry 2024年第11期6卷 2679-2691页

作者： Yuanning Feng Xingang Zhao Daniel A.Appleton Han Han Ryan M.Young Wenqi Liu Christopher K.Lee Weixingyue Li Bai-Tong Liu Yong Wu Chun Tang Aspen X-Y.Chen Charlotte L.Stern dong jun kim Michael R.Wasielewski Yunyan Qiu J.Fraser Stoddart Department of Chemistry and Biochemistry The University of OklahomaNormanOklahoma 73019 Weinberg College of Arts and Sciences Northwestern UniversityEvanstonIllinois 60208 Department of Chemistry The University of Hong KongHong Kong SAR 999077 Paula M.Trienens Institute for Sustainability and Energy Northwestern UniversityEvanstonIllinois 60208 Department of Chemistry University of South FloridaTampaFlorida 33620 School of Chemistry University of New South WalesSydneyNSW 2052 Department of Chemistry National University of SingaporeSingapore 117543 Center for Regenerative Nanomedicine Northwestern UniversityChicagoIllinois 60611 Stoddart Institute of Molecular Science Department of ChemistryZhejiang UniversityHangzhou 310027 ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311215

In the field of supramolecular chemistry,cyclophanes with novel properties are highly sought after since they can be tailored to fulfill specific *** this article,we incorporate chalcogenoviologen-based units into tetracationic cyclophanes,resulting in enhanced host–guest *** cyclophanes can be tuned through the addition of chalcogen bridging atoms—S,Se,and Te—which enhance their rigidity,regulate bond rotation and introduce additional steric *** cyclophanes containing chalcogen bridging atoms were synthesized and characterized in both the solution and solid *** energy barriers for their interconversion between syn-and anti-conformations in solution were found to be correlated with chalcogen atom *** photophysical properties of the cyclophanes are strongly dependent on the chalcogen atomic number,with intersystem crossing rates increasing from S to Se to ***–vis-NIR spectroscopic and fluorometric titrations revealed that the chalcogenoviologenbased cyclophanes exhibit significantly stronger binding with electron-rich guests compared to the well-known,unsubstituted cyclobis(paraquat-pphenylene).This enhancement in binding can be attributed to restricted rotation within the chalcogenoviologen *** research provides insight into the rational design and tailored synthesis of cationic cyclophanes.

关键词： binding titrations chalcogens host–guest systems molecular recognition supramolecular chemistry

Aligned Ion Conduction Pathway of Polyrotaxane‑Based Electrolyte with Dispersed Hydrophobic Chains for Solid‑State Lithium–Oxygen Batteries

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Nano-Micro Letters 2025年第2期17卷 169-186页

作者： Bitgaram kim Myeong‑Chang Sung Gwang‑Hee Lee Byoungjoon Hwang Sojung Seo Ji‑Hun Seo dong‑Wan kim Department of Materials Science and Engineering Korea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea School of Civil Environmental and Architectural EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 02841Republic of Korea Materials Science and Chemical Engineering Center Institute for Advanced Engineering(IAE)Yongin 17180Republic of Korea

A critical challenge hindering the practical application of lithium–oxygen batteries(LOBs)is the inevitable problems associated with liquid electrolytes,such as evaporation and safety *** study addresses these problems by proposing a modified polyrotaxane(mPR)-based solid polymer electrolyte(SPE)design that simultaneously mitigates solvent-related problems and improves ***-SPE exhibits high ion conductivity(2.8×10^(−3)S cm^(−1)at 25℃)through aligned ion conduction pathways and provides electrode protection ability through hydrophobic chain *** this mPR-SPE into solid-state LOBs resulted in stable potentials over 300 *** situ Raman spectroscopy reveals the presence of an LiO_(2)intermediate alongside Li_(2)O_(2)during oxygen *** situ X-ray diffraction confirm the ability of the SPE to hinder the permeation of oxygen and moisture,as demonstrated by the air permeability *** present study suggests that maintaining a low residual solvent while achieving high ionic conductivity is crucial for restricting the sub-reactions of solid-state LOBs.

关键词： Solid polymer electrolyte Lithium-oxygen batteries Polyrotaxane ion conductivity Hydrophobic chain