检索结果-南通市图书馆

Effects of electroacupuncture on the functionality of NG2-expressing cells in perilesional brain tissue of mice following ischemic stroke

引用

Neural Regeneration Research 2022年第7期17卷 1556-1565页

作者： Hong Ju Lee da hee jung Nam Kwen Kim Hwa Kyoung Shin Byung Tae Choi Department of Korean Medical Science School of Korean MedicinePusan National UniversityYangsanRepublic of Korea Graduate Training Program of Korean Medicine for Healthy Aging Pusan National UniversityYangsanRepublic of Korea Department of Korean Ophthalmology Otolaryngology and DermatologySchool of Korean MedicinePusan National UniversityYangsanRepublic of Korea

Neural/glial antigen 2(NG2)-expressing cells has multipotent stem cell activity under cerebral *** study examined the effects of electroacupuncture(EA)therapy(2 Hz,1 or 3 mA,20 minutes)at the Sishencong acupoint on motor function after ischemic insult in the brain by investigating the rehabilitative potential of NG2-derived cells in a mouse model of ischemic *** stimulation alleviated motor deficits caused by ischemic stroke,and 1 mA EA stimulation was more efficacious than 3 mA EA stimulation or positive control treatment with edaravone,a free radical *** properties of NG2-expressing cells were altered with 1 mA EA stimulation,enhancing their survival in perilesional brain tissue via reduction of tumor necrosis factor alpha *** stimulation robustly activated signaling pathways related to proliferation and survival of NG2-expressing cells and increased the expression of neurotrophic factors such as brain-derived neurotrophic factor,tumor growth factor beta,and neurotrophin *** the perilesional striatum,EA stimulation greatly increased the number of NG2-expressing cells double-positive for oligodendrocyte,endothelial cell,and microglia/macrophage markers(CC1,CD31,and CD68).EA therapy also greatly activated brain-derived neurotrophic factor/tropomyosin receptor kinase B and glycogen synthase kinase 3 beta *** results indicate that EA therapy may prevent functional loss at the perilesional site by enhancing survival and differentiation of NG2-expressing cells via the activation of brain-derived neurotrophic factor-induced signaling,subsequently ameliorating motor *** animal experiments were approved by the Animal Ethics Committee of Pusan National University(approval ***2019-2199 and PNU2019-2884)on April 8,2019 and June 19,2019.

关键词： brain-derived neurotrophic factor differentiation electroacupuncture motor function neural/glial antigen 2 perilesional striatum stroke survival

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of an analytical method for multi-residue quantification of 18 anthelmintics in various animal-based food products using liquid chromatography-tandem mass spectrometry

引用

Journal of Pharmaceutical Analysis 2021年第1期11卷 68-76页

作者： Kyung-hee Yoo da-hee Park A.M.Abd El-Aty Seong-Kwan Kim Hae-Ni jung da-Hye Jeong hee-jung Cho Ahmet Hacimuftuoglu Jae-Han Shim Ji Hoon Jeong Ho-Chul Shin Department of Veterinary Pharmacology and Toxicology College of Veterinary MedicineKonkuk UniversitySeoul143-701Republic of Korea State Key Laboratory of Biobased Material and Green Papermaking College of Food Science and EngineeringQilu University of TechnologyShandong Academy of ScienceJinan250353China Department of Pharmacology Faculty of Veterinary MedicineCairo University12211GizaEgypt Department of Medical Pharmacology Medical FacultyAtaturk UniversityErzurum25240Turkey Department of Veterinary Physiology College of Veterinary MedicineKonkuk UniversitySeoul143-701Republic of Korea Natural Products Chemistry Laboratory College of Agriculture and Life SciencesChonnam National UniversityGwangju500-757Republic of Korea Department of Pharmacology College of MedicineChung-Ang UniversitySeoul156-756Republic of Korea

In this study,we developed a simple screening procedure for the determination of 18 anthelmintics(including benzimidazoles,macrocyclic lactones,salicylanilides,substituted phenols,tetrahydropyrimidines,and imidazothiazoles)in five animal-derived food matrices(chicken muscle,pork,beef,milk,and egg)using liquid chromatography-tandem mass *** were extracted using acetonitrile/1% acetic acid(milk and egg)and acetonitrile/1% acetic acid with 0.5 mL of distilled water(chicken muscle,pork,and beef),and purified using saturated n-hexane/acetonitrile.A reversed-phase analytical column and a mobile phase consisting of(A)10 mM ammonium formate in distilled water and(B)methanol were used to achieve optimal chromatographic ***-matched standard calibration curves(R^(2)≥0.9752)were obtained for concentration equivalent to ×1/2,×1,×2,×3,×4,and×5 fold the maximum residue limit(MRL)stipulated by the Korean Ministry of Food and Drug *** of 61.2e118.4%,with relative standard deviations(RSDs)of ≤19.9%(intraday and interday),were obtained for each sample at three spiking concentrations(×1/2,×1,and ×2 the MRL values).Limits of detection,limits of quantification,and matrix effects were 0.02e5.5 mg/kg,0.06e10 mg/kg,and -98.8 to 13.9%(at 20 μg/kg),*** five samples of each food matrix(chicken muscle,pork,beef,milk,and egg)purchased from large retailers in Seoul that were tested,none of the target analytes were *** has therefore been shown that this protocol is adaptable,accurate,and precise for the quantification of anthelmintic residues in foods of animal origin.

关键词： Anthelmintics Tandem mass spectrometry Animal-based food products Residue analysis Method validation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Rice tissue-specific promoters and conditiondependent promoters for effective translational application

引用

Journal of Integrative Plant Biology 2015年第11期57卷 913-924页

作者： hee-Jeong Jeong Ki-Hong jung Department of Plant Molecular Systems Biotechnology and Crop Biotech Institute Kyung Hee University Graduate School of Biotechnology Kyung Hee University

Rice （Oryza sativa） is one of the most important staple food crops for more than half of the world＇s population. The demand is increasing for food security because of population growth and environmental challenges triggered by climate changes. This scenario has led to more interest in developing crops with greater productivity and sustainability. The process of genetic transformation, a major tool for crop improvement, utilizes promoters as one of its key elements. Those promoters are generally divided into three types： constitutive, spatiotemporal, and condition-dependent. Tran- scriptional control of a constitutive promoter often leads to reduced plant growth, due to a negative effect of accumu- lated molecules during cellular functions or energy consump- tion. To maximize the effect of a transgene on transgenic plants, it is better to use condition-dependent or tissue- specific promoters. However, until now, those types have not been as widely applied in crop biotechnology. In this review, we introduce and discuss four groups of tissue-specific promoters （5o promoters in total） and six groups of condition-dependent promoters （27 promoters）. These pro- moters can be utilized to fine-tune desirable agronomic traits and develop crops with tolerance to various stresses, enhanced nutritional value, and advanced productivity.

关键词： Condition-dependent promoters crop biotechnologyapplication genetic transformation rice tissue-specific promoters

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Role of calmodulin in neuronal Kv7/KCNQ potassium channels and epilepsy

引用

Frontiers in Biology 2014年第3期9卷 205-215页

作者： hee jung CHUNG Department of Molecular and Integrative Physiology University of Illinois at Urbana-Champaign Urbana IL 61801 USA Neuroscience Program University of Illinois at Urbana-Champaign Urbana IL 61801 USA

Neuronal Kv7/KCNQ channels are critical regulators of neuronal excitability since they potently suppress repetitive firing of action potentials. These voltage-dependent potassium channels are composed mostly of Kv7.2 / KCNQ2 and KvT.3 / KCNQ3 subunits that show overlapping distribution throughout the brain and in the peripheral nervous system. They are also called ＇M-channels＇ since their inhibition by muscarinic agonists leads to a profound increase in action potential firing. Consistent with their ability to suppress seizures and attenuate chronic inflammatory and neuropathic pain, mutations in the KCNQ2 and KCNQ3 genes are associated with benign familial neonatal convulsions, a dominantly-inherited epilepsy in infancy. Recently, de novo mutations in the KCNQ2 gene have been linked to early onset epileptic encephalopathy. Notably, some of these mutations are clustered in a region of the intracellular cytoplasmic tail of Kv7.2 that interacts with a ubiquitous calcium sensor, calmodulin. In this review, we highlight the recent advances in understanding the role of calmodulin in modulating physiological function of neuronal Kv7 channels including their biophysical properties, assembly, and trafficking. We also summarize recent studies that have investigated functional impact of epilepsy-associated mutations localized to the calmodulin binding domains of Kv7.2.

关键词： calmodulin Kv7 KCNQ epilepsy action potential M-channel

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

PotholeEye^(+): Deep-Learning Based Pavement Distress Detection System toward Smart Maintenance

引用

Computer Modeling in Engineering & Sciences 2021年第6期127卷 965-976页

作者： Juyoung Park jung hee Lee Junseong Bang Korea Expressway Corporation 77Hyeoksin8-roGimcheon-siKorea Electronics and Telecommunications Research Institute(ETRI) 218 Gajeong-roYuseong-guDaejun-siKorea University of Science&Technology(UST) 217 Gajeong-roYuseong-guDaejun-siKorea

We propose a mobile system,called PotholeEye+,for automatically monitoring the surface of a roadway and detecting the pavement distress in real-time through analysis of a ***+pre-processes the images,extracts features,and classifies the distress into a variety of types,while the road manager is *** day for a year,we have tested PotholeEye+on real highway involving real settings,a camera,a mini computer,a GPS receiver,and so ***,PotholeEye+detected the pavement distress with accuracy of 92%,precision of 87%and recall 74%averagely during driving at an average speed of 110 km/h on a real highway.

关键词： Pavement distress detection classification convolutional neural network deep learning video analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Consistency of intensity ratio between spectral lines with similar self-absorption characteristics during ungated laser induced breakdown spectroscopy measurements

引用

Plasma Science and Technology 2019年第3期21卷 77-83页

作者： jung-Hwan IN Youngmin MOON Jang-hee CHOI Sungho JEONG Optical Lens Research Center Korea Photonics Technology Institute School of Mechanical Engineering Gwangju Institute of Science and Technology

This work reports that the intensity ratio of spectral lines having similar self-absorption characteristics during laser induced breakdown spectroscopy(LIBS) analysis can become nearly constant over a wide range of irradiation conditions if the intensities are integrated over a sufficiently long time. It is shown that the plasma temperature and intensity ratio of these spectral lines have temporal similarity. The spectral lines with similar self-absorption properties may be selected to improve the accuracy and consistency of LIBS analysis results under an environment with fluctuating measurement conditions.

关键词： laser induced breakdown spectroscopy intensity ratio self-absorption characteristics CIGS solar cell

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Managing the lifecycle of perovskite solar cells: Addressing stability and environmental concerns from utilization to end-of-life

引用

eScience 2024年第2期4卷 1-27页

作者： hee jung Kim Gill Sang Han Hyun Suk jung School of Advanced Materials Science&Engineering Sungkyunkwan University2066Seobu-roJangan-guSuwon-siGyeonggi-do 16419Republic of Korea Division of Advanced Materials Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwon 16419Republic of Korea

Perovskite solar cells(PSCs)have shown remarkable advancements and achieved impressive power conversion efficiencies since their initial introduction in ***,challenges regarding stability,quality,and sustainability must be addressed for their successful commercial *** review analyses the recent studies and challenges related to the operating life and end-of-life utilization of *** to enhance the stability and mitigate the toxic Pb leakage in operational and recycling approaches of discarded PSCs post their end-of-life are examined to establish a viable and sustainable PSC ***,future research directions are proposed for the advancements in the PSC *** goal is to ensure high efficiency as well as economic and environmental sustainability throughout the lifecycle of PSCs.

关键词： Levelized cost of electricity Metal electrode Pb leakage Perovskite Power conversion efficiency Solar cell life cycle

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High-Throughput Pb Recycling for Perovskite Solar Cells Using Biomimetic Whitlockite

引用

Energy & Environmental Materials 2023年第3期6卷 170-176页

作者： jung Sug Hong hee jung Kim Chang Hwun Sohn Oh Yeong Gong Jin Hyuk Choi Kang hee Cho Gill Sang Han Ki Tae Nam Hyun Suk jung Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Korea School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySuwon 16419Korea

Pb contamination in aquatic environments causes severe pollution;therefore,harmless absorbents are *** this study,we report a novel synthesis of whitlockite(WH,Ca_(18)Mg_(2)(HPO_(4))_(2)(PO_(4))_(12)),which is the second most abundant biomineral in human bone,and its application as a high-performing Pb^(2+)***(HAP)and WH are prepared via a simple precipitation *** Pb2+absorption performance and mechanism of the synthesized biominerals are investigated in aqueous solutions at neutral *** results demonstrate that WH exhibits an excellent Pb2+absorption capacity of 2339 mg g^(−1),which is 1.68 times higher than the recorded value for ***,the absorbed Pb^(2+) ions are recycled into high-purity PbI_(2).This is employed as a precursor for the fabrication of perovskite solar cells(PSCs),resulting in a conversion efficiency of 19.00%comparable to that of commercial PbI2 powder(99.99%purity).Our approach provides an efficient way to remove Pb^(2+)ions from water and reuse them in the recycling of PSCs.

关键词： Pb absorption Pb recycling perovskite solar cells water purification whitlockite

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

^(27)Al MAS-NMR study of inorganic polymer formation at ambient temperature

引用

Transactions of Nonferrous Metals Society of China 2011年第A1期21卷 182-187页

作者： Sang-Wook AHN hee-Soo LEE Wan-hee YANG jung-Woo LEE Young-Keun JEONG National Core Research Center for Hybrid Materials Solution Pusan National University School of Material Science and Engineering Pusan National University INTChem Co. Ltd.

Inorganic polymers are a novel class of materials formed by the polymerization of silicon, aluminium and oxygen species to form an amorphous three-dimensional framework structure. The basis of this process is the alkaline solutions to induce a certain amount of Si and AI atoms to dissolve from a feedstock such as aluminosilicate. A study of 27A1 MAS-NMR was carried out in an attempt to understand the reaction mechanism of the inorganic polymerization at ambient temperature. Scanning electron microscopy （SEM） and X-ray diflYactometry （XRD） were also employed to establish the composition and microstructure of the inorganic polymerization. Specimens were prepared with different A1/Si mole ratios from the starting materials. The higher the AI content, the more sufficient the AI atoms that can combine with SiO4, and the longer the reaction time, the more the bonded Si--O--A1--O polymer structure, and then the higher the A1 content, the fewer the octahedral A1 with a uniform Si--O--A1--O structure in four directions, because four AI atoms are combined with SiO4, resulting in a uniform Si--O--AI--O structure in four directions. The results show that they have an amorphous microstructure.

关键词： inorganic polymer amorphous tetrahedral

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Attaching single carbon nanotube on tip's apex using dielectrophoresis of DC-pulse voltage

引用

中国有色金属学会会刊：英文版 2009年第B9期19卷 280-283页

作者： hee-Jin JEONG Yoong-Ho jung Deug-Woo LEE Gyeongbuk Hybrid Technology Institute School of Mechanical Engineering Pusan National University Department of Nanosystem and Nanoprocess Engineering Pusan National University

Single carbon nanotubes (CNTs) are candidates for a number of electronics and sensing applications, provided that single CNTs can be separated from a bundle of CNTs in suspension. Dielectrophoresis has recently been demonstrated as one route for the extraction of desired CNTs. However, previous methods using dielectrophoresis have found it difficult to extract single nanotubes from bundles of CNTs in solution. Here, we show that this restriction can be overcome by using pulsed DC voltage of an electric field, instead of regular AC and DC voltages.

关键词：碳纳米管直流脉冲脉冲电压介电顶点消息电子号码 CNTs

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：