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SUMS OF DUAL TOEPLITZ PRODUCTS ON THE ORTHOGONAL COMPLEMENTS OF FOCK-SOBOLEV SPACES

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Acta Mathematica Scientia 2024年第3期44卷 810-822页

作者：陈泳 young joo Lee Department of Mathematics Hangzhou Normal UniversityHangzhou311121China Department of Mathematics Chonnam National UniversityGwangju61186Korea

We consider dual Toeplitz operators on the orthogonal complements of the FockSobolev spaces of all nonnegative real ***,for symbols in a certain class containing all bounded functions,we study the problem of when an operator which is finite sums of the dual Toeplitz products is compact or ***,for bounded symbols,we construct a symbol map and exhibit a short exact sequence associated with the C^(*)-algebra generated by all dual Toeplitz operators with bounded symbols.

关键词： dual Toeplitz operators Fock-Sobolev spaces symbol map

Advancements in hemostatic strategies for managing upper gastrointestinal bleeding: A comprehensive review

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World Journal of Gastroenterology 2024年第15期30卷 2087-2090页

作者： Ah young Lee joo young Cho Division of Gastroenterology Department of Internal MedicineCha Gangnam Medical CenterCha University College of MedicineSeoul 06135Korea

Upper gastrointestinal(GI)hemorrhage presents a substantial clinical *** management typically involves resuscitation and endoscopy within 24 h,although the benefit of very early endoscopy(<12 h)for high-risk patients is *** goals include stopping acute bleeding,preventing rebleeding,and using a multimodal approach encompassing endoscopic,pharmacological,angiographic,and surgical *** agents such as vasopressin,prostaglandins,and proton pump inhibitors are effective,but the increase in antithrombotic use has increased GI bleeding *** hemostasis,particularly for nonvariceal bleeding,employs techniques such as electrocoagu-lation and heater probes,with concerns over tissue injury from monopolar *** methods such as Hemospray and Endoclot show promise in creating mechanical tamponades but have ***,the first-line therapy includes thermal probes and hemoclips,with over-the-scope clips emerging for larger ulcer *** gold probe,combining bipolar electrocoagulation and injection,offers targeted coagulation but has faced device-related *** advancements involve combining techniques and improving endoscopic imaging,with studies exploring combined approaches showing *** research is crucial for developing standardized and effective hemorrhage management strategies.

关键词： Upper gastrointestinal bleeding Hemostasis Endoscopy Probe Spray Clip

Indolocarbazole-Based Small Molecule Cathode-Active Material Exhibiting Double Redox for High-Voltage Li-Organic Batteries

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Energy & Environmental Materials 2024年第5期7卷 90-98页

作者： Hyunji Park Hyojin Kye Jong-Sung Lee young-Chang joo Dong joo Min Bong-Gi Kim Soo young Park Ji Eon Kwon Laboratory for Supramolecular Optoelectronic Materials (LSOM) Department of Materials Science and Engineering Research Institute of Advanced Materials (RIAM) Seoul National University Functional Composite Materials Research Center Jeonbuk Institute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Department of Organic and Nano System Engineering Konkuk University Department of Materials Science and Engineering Seoul National University Department of JBNU-KIST Industry Academia Convergence Research Jeonbuk National University

Most organic electrode materials （OEMs） for rechargeable batteries employ n-type redox centers, whose redox potentials are intrinsically limited <3.0 V versus Li+/Li. However, p-type materials possessing high redox potentials experience low specific capacities because they are capable of only a single redox reaction within the stable electrochemical window of typical ***, we report 5,11-diethyl-5,11-dihydroindolo[3,2-b]carbazole （DEICZ） as a novel p-type OEM, exhibiting stable plateaus at high discharge potentials of3.44 and 4.09 V versus Li+/Li. Notably, the second redox potential of DEICZ is within the stable electrochemical window. The mechanism of the double redox reaction is investigated using both theoretical calculations and experimental measurements, including density functional theory calculations, ex situ electron spin resonance, and X-ray photoelectron spectroscopy. Finally,hybridization with single-walled carbon nanotubes （SWCNT） improves the cycle stability and rate performance of DEICZ owing to theπ–πinteractions between the SWCNT and co-planar molecular structure of DEICZ, preventing the dissolution of active materials into the electrolyte. The DEICZ/SWCNT composite electrode maintains 70.4%of its initial specific capacity at 1-C rate and also exhibits high-rate capability, even performing well at 100-C rate.

关键词： composite electrodes flexible batteries indolocarbazoles organic rechargeable batteries p-type

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金银花乳杆菌发酵凉茶的研制

食品科学 2016年第3期37卷 131-136页

作者：陈康 oh young joo 李洪军 Tae Seok Kim 贺稚非 Ik Hyun Yeo 西南大学食品科学学院重庆400715 韩国圃美多有限责任公司

该研究的目的在于探究植物乳杆菌发酵金银花凉茶的工艺条件。以金银花为原料,通过单因素试验和正交试验,研究植物乳杆菌PMO接种量、发酵温度、发酵时间和糖添加量对金银花凉茶发酵过程的影响,并对发酵工艺条件进行优化。结果表明,植物... 详细信息

该研究的目的在于探究植物乳杆菌发酵金银花凉茶的工艺条件。以金银花为原料,通过单因素试验和正交试验,研究植物乳杆菌PMO接种量、发酵温度、发酵时间和糖添加量对金银花凉茶发酵过程的影响,并对发酵工艺条件进行优化。结果表明,植物乳杆菌PMO经过驯化过程,其在金银花凉茶中具有优良的增殖活性;金银花凉茶中绿原酸含量受发酵过程影响较小,始终稳定在29.20 mg/g左右;金银花凉茶最佳发酵工艺条件为植物乳杆菌PMO接种量3%、发酵温度37℃、发酵时间14 h、糖添加量7%。

关键词：金银花凉茶植物乳杆菌PMO 发酵工艺条件绿原酸

Clinical diagnostic advances in intestinal anastomotic techniques:Hand suturing,stapling,and compression devices

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1231-1234页

作者： Ah young Lee joo young Cho Division of Gastroenterology Department of Internal MedicineCha Gangnam Medical CenterCha University College of MedicineSeoul 06135South Korea

The development of intestinal anastomosis techniques,including hand suturing,stapling,and compression anastomoses,has been a significant advancement in surgical *** methods aim to prevent leakage and minimize tissue fibrosis,which can lead to stricture *** healing process involves various phases:hemostasis and inflammation,proliferation,and *** staplers and sutures can cause inflammation and fibrosis due to the release of profibrotic *** anastomosis devices,including those made of nickel-titanium alloy,offer a minimally invasive option for various surgical challenges and have shown safety and ***,despite advancements,anastomotic techniques are evaluated based on leakage risk,with complications being a primary *** devices like Magnamosis use magnetic rings for compression anastomosis,demonstrating greater strength and patency compared to *** technology is also being explored for other medical *** there are promising results,particularly in animal models,the realworld application in humans is limited,and further research is needed to assess their safety and practicality.

关键词： Anastomoses Diagnostic advances,Anastomotic techniques Technique Intestine

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植物乳杆菌PMO的安全性分析

食品与发酵工业 2020年第19期46卷 28-34页

作者：王春幸 oh young joo 甘奕 KIM TAE SUK 李洪军 IK HYUN YEO 贺稚非西南大学食品科学学院重庆400715 韩国圃美多有限责任公司首尔120-749

为获得新的优良菌株,对从韩国泡菜中分离筛选的植物乳杆菌PMO(Lactobacillus plantarum PMO)进行安全性评价。对小鼠急性毒性、抗生素敏感性、细菌易位、脏器指数、生化指标等进行测定,结果表明,*** PMO无急性毒性,对四环素、红霉素和... 详细信息

为获得新的优良菌株,对从韩国泡菜中分离筛选的植物乳杆菌PMO(Lactobacillus plantarum PMO)进行安全性评价。对小鼠急性毒性、抗生素敏感性、细菌易位、脏器指数、生化指标等进行测定,结果表明,*** PMO无急性毒性,对四环素、红霉素和庆大霉素等抗生素高度敏感,不会引起沙门氏菌和志贺氏菌细菌易位。灌胃*** PMO小鼠的脏器指数及生化指标与对照小鼠无显著差异,对肝脏、心脏、肾脏及胆道的细胞和功能均无损害作用。

关键词：植物乳杆菌PMO 抗生素敏感性细菌易位脏器指数生化指标

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液态与固态酵素理化成分及抗氧化活性的研究

食品与发酵工业 2020年第13期46卷 85-91页

作者：余思洁 oh young joo 李洪军 KIM TAE SUK 贺稚非 LEE SANG YUN 李少博李敏涵西南大学食品科学学院重庆400715 韩国圃美多有限责任公司韩国120-749

为了对比分析液态酵素与固态酵素这2类市场上常见的酵素产品的差异,以3种液态酵素和3种固态酵素为原料,对其理化成分、生物活性物质及其体外抗氧化活性进行了分析与比较。结果显示,液态酵素产品的总酸、还原糖、可溶性固形物、总酚、总... 详细信息

为了对比分析液态酵素与固态酵素这2类市场上常见的酵素产品的差异,以3种液态酵素和3种固态酵素为原料,对其理化成分、生物活性物质及其体外抗氧化活性进行了分析与比较。结果显示,液态酵素产品的总酸、还原糖、可溶性固形物、总酚、总黄酮、花青素含量均显著高于固态酵素,液态酵素超氧化物歧化酶(superoxide dismutase,SOD)活力较高,但差异很大,在193.23~1214.46 U/mL,显著高于固态酵素;2类酵素的蛋白酶、脂肪酶、α-淀粉酶活力均较低,液态酵素蛋白酶、脂肪酶活力显著高于固态酵素,而液态酵素几乎没有α-淀粉酶活力。不同酵素产品具有较强的抗氧化能力且差异较大,液态酵素1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基清除能力的IC 50值在5.65~21.08μL/mL,而固态酵素最小的IC50值为29.77μL/mL,液态酵素的抗氧化能力显著强于固态酵素。该研究为帮助人们了解不同状态的酵素产品品质,正确看待酵素产品提供了参考,对于促进酵素行业健康发展具有指导意义。

关键词：液态酵素固态酵素生物活性物质功能酶活力抗氧化活性

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响应面法优化金银花凉茶浸提工艺的研究

西南大学学报（自然科学版） 2014年第12期36卷 207-214页

作者：陈康 oh young joo 李洪军 Tae Seok Kim 贺稚非 Ik Hyun Yeo 西南大学食品科学学院重庆400715 韩国圃美多有限责任公司

采用响应面分析法优化金银花凉茶的浸提工艺条件,以金银花、菊花、夏枯草和鱼腥草为原料,绿原酸得率为指标.在单因素试验基础上,应用Box-Benhnken中心组合设计试验,对浸提工艺影响较大的料液比、浸提时间、浸提温度3个工艺参数进行优化... 详细信息

采用响应面分析法优化金银花凉茶的浸提工艺条件,以金银花、菊花、夏枯草和鱼腥草为原料,绿原酸得率为指标.在单因素试验基础上,应用Box-Benhnken中心组合设计试验,对浸提工艺影响较大的料液比、浸提时间、浸提温度3个工艺参数进行优化.结果表明:金银花等原料的绿原酸水提工艺的最佳条件为不粉碎原料、固定金银花1g,菊花、夏枯草和鱼腥草质量比为2∶2∶1共1.5g,料液比为1∶32,浸提时间为71min,浸提温度为78℃,浸提2次,在该条件下验证绿原酸得率达到3.01%,接近于预测值3.04%.研究表明,优化得到的回归模型具有良好的预测能力.

关键词：金银花凉茶浸提工艺绿原酸响应面分析法 response surface analysis (RSA)

Disordered Structure and Reversible Phase Transformation from K-Birnessite to Zn-Buserite Enable High-Performance Aqueous Zinc-lon Batteries

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Energy & Environmental Materials 2024年第3期7卷 100-111页

作者： Nibagani Naresh Suyoon Eom Sang Jun Lee Su Hwan Jeong Ji-Won Jung young Hwa Jung joo-Hyung Kim Department of Materials Engineering and Convergence Technology Gyeongsang National University(GNU)Jinju 52828South Korea School of Material Science and Engineering(Ceramic Engineering) Gyeongsang National University(GNU)Jinju 52828South Korea School of Materials Science and Engineering University of Ulsan(UOU)Ulsan 44776South Korea PLS-ⅡBeamline Division Pohang Accelerator Laboratory(PAL)Pohang 37673South Korea

The layeredδ-MnO_(2)(dMO)is an excellent cathode material for rechargeable aqueous zinc-ion batteries owing to its large interlayer distance(~0.7 nm),high capacity,and low cost;however,such cathodes suffer from structural degradation during the long-term cycling process,leading to capacity *** this study,a Co-doped dMO composite with reduced graphene oxide(GC-dMO)is developed using a simple cost-effective hydrothermal *** degree of disorderness increases owing to the hetero-atom doping and graphene oxide *** is demonstrated that layered dMO and GC-dMO undergo a structural transition from K-birnessite to the Zn-buserite phase upon the first discharge,which enhances the intercalation of Zn^(2+)ions,H_(2)O molecules in the layered *** GC-dMO cathode exhibits an excellent capacity of 302 mAh g^(-1)at a current density of 100 mAg^(-1)after 100 cycles as compared with the dMO cathode(159 mAhg^(-1)).The excellent electrochemical performance of the GC-dMO cathode owing to Co-doping and graphene oxide sheets enhances the interlayer gap and disorderness,and maintains structural stability,which facilitates the easy reverse intercalation and de-intercalation of Zn^(2+)ions and H_(2)O ***,GC-dMO is a promising cathode material for large-scale aqueous ZIBs.

关键词： aqueous zinc-ion batteries birnessite buserite disordered structure phase transformation