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Semicrystalline Unfused Polymer Donors with Backbone Halogenation toward Cost-Effective Organic Solar Cells

Chinese Journal of Chemistry 2024年第7期42卷 752-759页

作者： Yuxin kong Shijie Ju Hongmei Qin Min Hun jee Simeng Xia Jiaqi Ren Chao Gao Jianyu Yuan Wenyan Su Han Young Woo Yuxiang Li School of Materials Science and Engineering Xi'an University of Science and TechnologyXianShaanxi 710054China Department of Chemistry Korea UniversitySeoul 02841Republic of Korea Xi'an Key Laboratory of Liquid Crystal and Organic Photovoltaic Materials State Key Laboratory of Fluorine&Nitrogen ChemicalsXi'an Modern Chemistry Research InstituteXi'anShaanxi 710065China Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Soochow University199 Ren'ai RoadSuzhouJiangsu 215123China

Developing novel unfused building blocks with simple synthesis and low cost is essential to advance and enrich cost-effective poly-mer donors;however,it remains a challenge due to the lack of efficient molecular ***,a class of low-cost and fully unfused polymer donors with precisely regulated backbone planarity via halogenation was designed and synthesized,namely PDTBTBz-2H,PDTBTBz-2F,and *** polymer donors possess a four-step synthesis route with over 80%yield from cheap raw chemicals comparable to existing low-cost polymer donors,such as *** from the planar backbone via in-corporating the F…S non-covalent interactions,PDTBTBz-2F exhibits more robust J-type aggregation in solution and a long-ranged molecular stacking in film relative to PDTBTBz-2H and ***,the systematical study of PDTBTBz-based organic so-lar cells(OSCs)reveals the close relationship between optimized molecular self-assembly and charge separation/transport regarding backbone halogenation when paired with the non-fullerene acceptor(Y6-BO-4F).As a result,the photovoltaic devices based on semicrystalline PDTBTBz-2F achieved a promising power conversion efficiency(PCE)of 12.37%.Our work highlighted the influence of backbone halogenation on the molecular self-assembly properties and a potential unfused backbone motif for further developing cost-effective OSCs.

关键词： Low-cost Polymer donors Backbone halogenation Molecular self-assembly Organic solar cells

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Production of chitosan-based composite film reinforced with lignin-rich lignocellulose nanofibers from rice husk

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Journal of Bioresources and Bioproducts 2024年第2期9卷 174-184页

作者： Hye jee Kang Yeon Ju Lee Jin Kyoung Lee Irnia Nurika Sri Suhartini Deokyeong Choe Dong hyun Kim Hoon Choi Natasha P.Murphy Ho Yong Kim Young Hoon Jung School of Food Science and Biotechnology Kyungpook National UniversityDaegu 41566Republic of Korea CPR S&T Co. Ltd.Gunpo 15880Republic of Korea Department of Agroindustrial Technology Faculty of Agricultural TechnologyUniversitas BrawijayaMalang 65145Indonesia Renewable Resources and Enabling Sciences Center National Renewable Energy LaboratoryGoldenCO 80401United States Center for Bio-based Chemistry Korea Research Institute of Chemical TechnologyUlsan 44429Republic of Korea

Lignocellulosic nanofibers(LCNFs),implying lignin-containing cellulose fibers,maintain the prop-erties of both lignin and cellulose,which are hydrophobic and hydrophilic,*** pres-ence of hydrophobic lignin in LCNFs is expected to be an economical and attractive option that can improve the thermal and mechanical properties of ***,this study was conducted to produce lignin-rich LCNFs from sugar-rich waste obtained from rice husks after acidic *** LCNFs were produced from the lignin-rich solid fractions obtained after pretreatment and enzymatic hydrolysis,which were then incorporated as an additive into a chitosan-based *** variations in lignin content in the range of approximately 50.6%-66.8%in differently obtained LCNFs gave significantly different optical strengths and mechanical *** controllable processes may allow for customized film ***,the glucose-rich liquid fractions obtained after pretreatment and enzymatic hydrolysis were used as a substrate for ethanol fermentation to achieve total utilization of rice husk biomass *** conclusion,the lignin-rich biomass fraction holds promise as a suitable material for chitosan-LCNF film and has the potential to increase the economic feasibility of the biomaterial industry.

关键词： Rice husk Lignocellulose nanofiber Lignin-based material Chitosan film Upcycling

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Counter-balancing effects of Si on C partitioning and stacking fault energy of austenite in 10Mn quenching and partitioning steel

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Journal of Materials Science & Technology 2022年第3期98卷 248-257页

作者： Dong Hwi Kim jee-hyun Kang Hojun Gwon Joo hyun Ryu Sung-Joon Kim Graduate Institute for Ferrous Technology Pohang University of Science and TechnologyPohang 37673Republic of Korea School of Materials Science and Engineering Institute of Materials TechnologyYeungnam UniversityGyeongsan 38541Republic of Korea POSCO Technical Research Laboratories POSCOGwangyang 57807Republic of Korea

Silicon is an essential alloying element in quenching and partitioning(Q&P)steels,because it is known to suppress carbide precipitation during partitioning step and promote carbon partitioning to stabilize *** 2 wt%Si was added to 10Mn-2Al-0.2C steel,the size and fraction of the carbides formed during partitioning became smaller than in the Si-free ***,the suppression of carbide formation promoted C partitioning into austenite as ***,austenite stability was always lower with Si under the equivalent partitioning condition because Si effectively decreased the stacking fault energy of *** partitioning progressed,the both yield and tensile strengths of the Si-added steel exceeded that of the Si-free steel with the similar ductility *** was because Si was an effective solid solution strengthener,and the austenite in the Si-added steel exhibited the appropriate stability to gradually transform into martensite throughout the *** resulting strengthening effect compensated for the softening caused by martensite ***,strain hardening rate decreased continuously throughout deformation,which resulted in high tensile strength and ductility.

关键词： Steels Q&P steel Silicon Austenite stability Tensile deformation Stacking fault energy Medium Mn steel

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边缘区淋巴瘤晚期患者R-CVP后利妥昔单抗维持治疗的Ⅱ期研究:一项改善淋巴瘤生存协会(CISL)的研究

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癌症 2020年第3期39卷 118-128页

作者： Sung Yong Oh Won Seog Kim Jin Seok Kim Seok Jin Kim Dok hyun Yoon Deok‑Hwan Yang Won Sik Lee Hyo Jung Kim Ho‑Young Yhim Seong hyun Jeong Jong Ho Won Suee Lee jee hyun kong Sung‑Nam Lim Jun Ho Ji Kyung A.Kwon Gyeong‑Won Lee Jae Hoon Lee Ho Sup Lee Ho‑Jin Shin Cheolwon Suh Department of Internal Medicine Dong-A University HospitalBusan 49201Republic of Korea Department of Medicine Samsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351Republic of Korea Division of Hematology Department of Internal MedicineYonsei University College of MedicineSeoul 03722Republic of Korea Department of Oncology Asan Medical CenterUniversity of Ulsan College of MedicineSongpa‑guSeoul 05505Republic of Korea Department of Hematology‑Oncology Chonnam National University Hwasun HospitalHwasun 58128Republic of Korea Department of Hematology Busan Paik HospitalInje University College of MedicineBusan 04511Republic of Korea Department of Internal Medicine Hallym University Sacred Heart HospitalHallym University College of MedicineAnyang 14068Republic of Korea Department of Internal Medicine Chonbuk National University HospitalJeonju 54907Republic of Korea Department of Hematology‑Oncology Ajou University School of MedicineSuwon 16499Republic of Korea Department of Internal Medicine Soonchunhyang University Seoul HospitalSoonchunhyang University College of MedicineSeoul 04401Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineWonju Severance Christian HospitalYonsei University College of MedicineWonju 26426Republic of Korea Department of Internal Medicine Haeundae Paik HospitalInje University College of MedicineBusan 48108Republic of Korea Division of Hematology and Oncology Department of Internal MedicineSamsung Changwon HospitalSungkyunkwan University School of MedicineChangwon 51353Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineDongnam Institute of Radiological and Medical SciencesBusan 46033Republic of Korea Division of Hematology‑Oncology Department of Internal MedicineGyeongsang National University HospitalGyeongsang National University College of MedicineJinju 52727Republic of Korea Department of Internal Medicine Gachon University Gil Medical CenterIncheon 21565Republic of

背景与目的利妥昔单抗是一种靶向CD20的单克隆抗体,在治疗边缘区淋巴瘤(marginal zone lymphoma,MZL)中可以单药或联合化疗使用,可提高缓解率和生存率,但治疗后仍可能会复发。因此,仍需探索如何延长MZL患者的缓解期的治疗方案。这项多... 详细信息

背景与目的利妥昔单抗是一种靶向CD20的单克隆抗体,在治疗边缘区淋巴瘤(marginal zone lymphoma,MZL)中可以单药或联合化疗使用,可提高缓解率和生存率,但治疗后仍可能会复发。因此,仍需探索如何延长MZL患者的缓解期的治疗方案。这项多中心、单臂、开放标签的Ⅱ期研究评估了对一线R-CVP(rituximab,cyclophosphamide,vincristine,and prednisolone;利妥昔单抗、环磷酰胺、长春新碱和泼尼松龙)治疗有反应的Ⅲ–Ⅳ期CD20阳性MZL患者进行利妥昔单抗维持治疗2年的生存率。本研究旨在明确R-CVP后利妥昔单抗维持治疗的策略是否有进一步研究的价值。方法在利妥昔单抗维持治疗之前,Ⅲ–Ⅳ期MZL患者应接受6–8周期的R-CVP一线治疗。每个周期为3周,第1 d静脉输注利妥昔单抗(375 mg/m^2)、环磷酰胺(750 mg/m^2)和长春新碱(1.4 mg/m^2;最大2 mg),第1–5 d口服泼尼松龙(100 mg)。对R-CVP治疗达到完全缓解(complete response,CR)、部分缓解(part response,PR)或疾病稳定(stable response,SD)的患者进行利妥昔单抗维持治疗,每8周静脉注射利妥昔单抗375mg/m^2,直到12个周期。主要终点为无进展生存期(progression-free surviva,PFS),次要终点为总生存期(overall survival,OS)和治疗安全性。结果共纳入47例患者,其中45(96%)例接受了利妥昔单抗维持治疗。15(33%)例患者有淋巴结MZL。在进行R-CVP一线治疗后,分别有20(44%)例、22(49%)例和3(7%)例的患者达到了CR、PR和SD。中位随访38.2个月后,患者的3年PFS率为81%。在利妥昔单抗维持治疗期间,R-CVP治疗后有6例PR和1例SD患者获得CR。LDH升高和B症状是PFS的重要预后因素(P=0.003),3年OS率为90%。利妥昔单抗维持治疗的耐受性良好,常见的治疗性不良事件为感觉性神经病(18%)、肌痛(13%)、疲劳(9%)和中性粒细胞减少(9%)。结论一线R-CVP治疗后利妥昔单抗维持治疗在Ⅲ–Ⅳ期MZL患者中不仅表现出较好的PFS,而且药物毒性反应评价良好。

关键词：边缘区淋巴瘤晚期利妥昔单抗环磷酰胺长春新碱维持多中心开放标签生存

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Development of 3D bicontinuous metal-intermetallic composites through subsequent alloying process after liquid metal dealloying

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Journal of Magnesium and Alloys 2023年第11期11卷 4274-4281页

作者： jee Eun Jang Jihye Seong Soo-hyun Joo Sung Hyuk Park School of Materials Science and Engineering Kyungpook National UniversityDaegu 41566Republic of Korea Department of Materials Science and Engineering Dankook UniversityCheonan 31116Republic of Korea

This study presents a novel process for the fabrication of metal-intermetallic composites with a 3D bicontinuous structure, achieved through a combination of liquid metal dealloying(LMD) and subsequent alloying. Initially, porous Ti structures are produced using the LMD process, followed by immersion in a molten Mg-3Al(wt%) metal. Due to the higher thermodynamic miscibility of Al with Ti compared to Mg, the concentration of Al in the Ti matrix increases as the immersion time increases. This results in a sequential phase transition within the Ti matrix: α-Ti → Ti_(3)Al → Ti Al. The phase transition considerably affects the hardness and strength of the composite material,with the Mg-Ti_(3)Al-Ti Al composite exhibiting a maximum hardness nearly twice as high as that of the conventional Mg-Ti composite. This innovative process holds potential for the development of various bicontinuous metal-intermetallic composites.

关键词： Liquid metal dealloying Subsequent alloying Metal–intermetallic composite 3D bicontinuous structure Hardness

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Obesity and novel management of inflammatory bowel disease

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World Journal of Gastroenterology 2023年第12期29卷 1779-1794页

作者： jee hyun Kim Chang-Myung Oh Jun Hwan Yoo Department of Gastroenterology CHA Bundang Medical CenterCHA University School of MedicineSeongnam 13496South Korea Department of Biomedical Science and Engineering Gwangju Institute of Science and TechnologyGwangju 62465South Korea Institute of Basic Medical Sciences CHA University School of MedicineSeongnam 13496South Korea

Obesity is prevalent within the inflammatory bowel disease(IBD)population,particularly in newly developed *** epidemiological studies have suggested that 15%-40%of IBD patients are obese,and there is a potential role of obesity in the pathogenesis of *** dysfunction of mesenteric fat worsens the inflammatory course of Crohn’s disease and may induce formation of strictures or ***,obesity may affect the disease course or treatment response of *** the increasing data supporting the pathophysiologic and epidemiologic relationship between obesity and IBD,obesity control is being suggested as a novel management for ***,this review aimed to describe the influence of obesity on the outcomes of IBD treatment and to present the current status of pharmacologic or surgical anti-obesity treatments in IBD patients.

关键词： Obesity Inflammatory bowel disease Crohn’s disease Ulcerative colitis

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Standardized ileal digestible lysine requirements based on growth performance and histochemical characteristics of male broilers from 10 to 21 d of age

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Animal Nutrition 2023年第1期12卷 145-150页

作者： Su hyun An Boin Lee Young Min Choi Changsu kong Department of Animal Science and Biotechnology Kyungpook National University37224SangjuRepublic of Korea Department of Animal Science Kyungpook National University37224SangjuRepublic of Korea

The growth performance and histochemical characteristics of breast muscle fibers were used to estimate the standardized ileal digestible(SID)Lys requirements for 10-to 21-d-old male *** hundred and sixty 10-d-old Ross 308 broilers(290±16.6 g)were allocated to 6 diets in a randomized complete block design with 6 replicate cages per treatment and 10 birds per *** 6 experimental diets were formulated to contain equally spaced increasing levels of SID Lys from 0.86%to 1.36%.The data were analyzed using the MIXED procedure of *** Lys requirements were estimated by the NLIN procedure of *** increase in dietary SID Lys from 0.86%to 1.36%resulted in a quadratic increase(P<0.05)in body weight gain(BWG),gain to feed ratio(G:F),breast weight,muscle cross-sectional area(MCSA),and fiber *** SID Lys requirements based on the one-slope broken-line,quadratic line,the first intercept between the plateau of the one-slope broken-line and quadratic-line models and 95%of the upper asymptote of the quadratic-line model were estimated to be 1.01%,1.19%,1.08%,and 1.13%for BWG,1.06%,1.22%,1.11%,and 1.16%for G:F,1.10%,1.29%,1.19%,and 1.22%for breast weight,1.06%,1.22%,1.12%,and 1.16%for MCSA,and 1.14%,1.22%,1.16%,and 1.16%for breast muscle fiber area,*** was concluded that the SID Lys requirements for broilers at the age of 10 to 21 d depended on the response variables used for estimation,and that histochemical characteristics of breast muscle fibers could be good indicators for estimating SID Lys requirements.

关键词： Requirement Lysine Growth performance Muscle fiber characteristics Broiler chicken

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Experimental and theoretical investigation of high-entropy-alloy/support as a catalyst for reduction reactions

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Journal of Energy Chemistry 2023年第6期81卷 132-142,I0005页

作者： Wail Al Zoubi Bassem Assfour Abdul Wahab Allaf Stefano Leoni jee-hyun Kang Young Gun Ko Materials Electrochemistry Laboratory School of Materials Science and EngineeringYeungnam UniversityGyeongsan 38541Republic of Korea Atomic Energy Commission Department of ChemistryP.O.Box 6091DamascusSyria Arab International University Department of Pharmaceutical Chemistry and Quality ControlFaculty of PharmacyGhabaghibDarraSyria Cardiff University School of ChemistryPark PlaceCF103AT CardiffUnited Kingdom School of Materials Science and Engineering Institute of Materials TechnologyYeungnam UniversityGyeongsan 38541Republic of Korea

Control of chemical composition and incorporation of multiple metallic elements into a single metal nanoparticle(NP)in an alloyed or a phase-segregated state hold potential scientific merit;however,developing libraries of such structures using effective strategies is challenging owing to the thermodynamic immiscibility of repelling constituent metallic ***,we present a one-pot interfacial plasma-discharge-driven(IP-D)synthesis strategy for fabricating stable high-entropy-alloy(HEA)NPs exhibiting ultrasmall size on a porous support ***,an electric field was applied for 120 s to enhance the incorporation of multiple metallic elements(i.e.,CuAgFe,CuAgNi,and CuAgNiFe)into ally ***,NPs were attached to a porous magnesium oxide surface via rapid *** solar light as the sole energy input,the CuAgNiFe catalyst was investigated as a reusable and sustainable material exhibiting excellent catalytic performance(100%conversion and 99% selectivity within1 min for a hydrogenation reaction)and consistent activity even after 20 cycles for a reduction reaction,considerably outperforming the majority of the conventional ***,the proposed strategy establishes a novel method for designing and synthesizing highly efficient and stable catalysts for the convertion of nitroarenes to anilines via chemical reduction.

关键词： Plasma Miscible Multicomponent Metal nanoparticle Nanocatalysts

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Optimization of adipose tissue-derived mesenchymal stromal cells transplantation for bone marrow repopulation following irradiation

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World Journal of Stem Cells 2022年第3期14卷 245-263页

作者： Min-Jung Kim Won Moon Jeonghoon Heo Sangwook Lim Seung-hyun Lee jee-Yeong Jeong Sang Joon Lee Department of Biochemistry Cancer Research Institute Kosin University College of MedicineSeo-gu 49267BusanSouth Korea Department of Internal Medicine Kosin University College of MedicineSeo-gu 49267BusanSouth Korea Department of Molecular Biology and Immunology Kosin University College of MedicineSeo-gu 49267BusanSouth Korea Department of Radiation Oncology Kosin University College of MedicineSeo-gu 49267BusanSouth Korea Department of General Surgery Kosin University College of MedicineSeogu 49267BusanSouth Korea Department of Ophthalmology Gospel HospitalKosin University College of MedicineSeo-gu 49267BusanSouth Korea

BACKGROUND Bone marrow(BM)suppression is one of the most common side effects of radiotherapy and the primary cause of death following exposure to *** concerted efforts,there is no definitive treatment method *** studies have reported using mesenchymal stromal cells(MSCs),but their therapeutic effects are *** We administered and examined the effects of various amounts of adipose-derived MSCs(ADSCs)in mice with radiation-induced BM *** Mice were divided into three groups:Normal control group,irradiated(RT)group,and stem cell-treated group following whole-body irradiation(WBI).Mouse ADSCs(mADSCs)were transplanted into the peritoneal cavity either once or three times at 5×10^(5) cells/200μ*** white blood cell count and the levels of,plasma cytokines,BM mRNA,and BM surface markers were compared between the three *** BM-derived CD34+hematopoietic progenitor cells were co-cultured with human ADSCs(hADSCs)or incubated in the presence of hADSCs conditioned media to investigate the effect on human cells in *** The survival rate of mice that received one transplant of mADSCs was higher than that of mice that received three *** transplantations of ADSCs delayed the repopulation of BM hematopoietic stem ***-inflammatory effects and M2 polarization by intraperitoneal ADSCs might suppress erythropoiesis and induce myelopoiesis in sub-lethally RT *** The results suggested that an optimal amount of MSCs could improve survival rates post-WBI.

关键词： Adipose tissue-derived stem cells Bone marrow suppression Mesenchymal stromal cells Radiation Cell therapy

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White matter changes in 80 mild cognitive impairment patients using magnetic resonance imaging

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Neural Regeneration Research 2009年第9期4卷 654-658页

作者： hyun Cho jee-hyun Kwon Sun-Young Kim Department of Neurology Ulsan University Hospital

BACKGROUND： Many studies have suggested that one possible etiology of mild cognitive impairment is small vessel cerebrovascular disease, which is associated with small subcortical infarcts and white matter abnormalities. These white matter changes have been detected as white matter hyperintensity （WMH） using magnetic resonance imaging. WMH may be associated with frontal lobe dysfunction. OBJECTIVE： To examine white matter changes in mild cognitive impairment patients of different subtypes, and to evaluate the correlation between white matter changes and neuropsychological characteristics, demographic information, vascular risk factors, and mild cognitive impairment subtypes. DESIGN, TIME AND SETTING： The neurophysiological, comparison study was performed at the Department of Neurology Memory Clinic, Ulsan University Hospital, South Korea, between March 2007 and March 2008. PARTICIPANTS： Out of a total of 83 subjects with clinically diagnosed mild cognitive impairment at the out-patient clinic, 3 subjects with severe WMH were excluded. A total of 80 subjects were included in this study. No patients suffered from cognitive impairment induced by neurological diseases, mental disorders, or somatic diseases. In accordance with magnetic resonance imaging results, the patients were assigned to two subtypes： 56 subjects without WMH and 24 subjects with WMH. METHODS： All patients were subjected to a standard neuropsychological battery using the Korean version of the Mini-Mental State Examination, Clinical Dementia Rating, and comprehensive Seoul Neuropsychological Screening Battery. The Clinical Dementia Rating reflected general cognitive function of patients. Results from the Seoul Neuropsychological Screening Battery reflected attention, language function, visuospatial function, verbal memory, nonverbal memory, long-term memory, and frontal/executive function. Magnetic resonance imaging was used to map changes in the brain. MAIN OUTCOME MEASURES： The association between va

关键词： mild cognitive impairment cerebrovascular disease white matter hyperintensity frontal/executive dysfunction

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