检索结果-南通市图书馆

Beneficial Effect of Berberis amurensis Rupr. on Penile Erection

Chinese Journal of Integrative Medicine 2018年第6期24卷 448-454页

作者： Rui Tan Yun Jung Lee kyung Woo cho Dae Gill Kang Ho Sub Lee College of Oriental Medicine and Professional Graduate School of Oriental Medicine Wonkwang University Hanbang CardioRenal Syndrome Research Center Wonkwang University Brain Korea 21 Plus Team Professional Graduate School of Oriental MedicineWonkwang University

Objective： To investigate whether the methanol extract of Berberis amurensis Rupr. （BAR） augments penile erection using in vitro and in vivo experiments. Methods： The ex vivo study used corpus cavemosum strips prepared from adult male New Zealand White rabbits. In in vivo studies for intracavernous pressure （ICP）, blood pressure, mean arterial pressure （MAP）, and increase of peak ICP were continuously monitored during electrical stimulation of Sprague-Dawley rats. Results： Preconstricted with phenylephrine （PE） in isolated endothelium- intact rabbit corus cavernosum, BAR relaxed penile smooth muscle in a dose-dependent manner, which was inhibited by pretreatment with NG-nitro-L-arginine methyl ester （L-NAME）, a nitric oxide synthase inhibitor, and 1H-[1,2,4]-oxadiazole-[4,3-α]-quinoxalin-l-one, a soluble guanylyl cclase inhibitor. BAR significantly relaxed penile smooth muscles dose-dependently in ex vivo, and this was inhibited by pretreatment with L-NAME 1H-[1,2,4]- oxadiazole-[4,3-α ]-quinoxalin-l-one. BAR-induced relaxation was significantly attenuated by pretreatment with tetraethylammonium （TEA, P〈0.01）, a nonselective K＋ channel blocker, 4-aminopyridine （4-AP, P〈0.01）, a voltage-dependent K＋ channel blocker, and charybdotoxin （P〈0.01）, a large and intermediate conductance Ca2. sensitive-K＋ channel blocker, respectively. BAR induced an increase in peak ICP, ICP/MAP ratio and area under the curve dose dependently. Conclusion： BAR augments penile erection via the nitric oxide/cyclic guanosine monophosphate system and Ca2. sensitive-K＋（BK＋ and IK＋） channels in the corpus cavemosum.

关键词： penile erection Berberis amurensis Rupr. nitric oxide cyclic guanosine monophosphate K+ channel

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

DNA-Binding Domain of AtTRB2 Reveals Unique Features of a Single Myb Histone Protein Family that Binds to Both Arabidopsis- and Human-Type Telomeric DNA Sequences

引用

Molecular Plant 2012年第6期5卷 1406-1408页

作者： Won kyung Lee Ji-Hye Yun Weontae Lee Myeon Haeng cho Department of Systems Biology College of Life Science and Biotechnology Yonsei University Seoul 120–749 Korea Department of Biochemistry College of Life Science and Biotechnology Yonsei University Seoul 120–749 Korea

Dear Editor, Telomeres are specific protein-DNA complexes that pro- tect the ends of eukaryotic chromosomes from fusion and degradation and are maintained by a specialized mecha- nism exerted by telomerase and telomere-binding proteins. Mammalian telomeres contain TTAGGG and are associated with a six-protein （e.g. TRF1, TRF2, TIN2, RAP1, POT1, and TPP1） complex called shelterin （de Lange, 2005）, which was involved in telomere homeostasis. Similarly to mammalian telomeres, telomeres in most plants are maintained by tel- omerase and telomere-associated proteins （e.g. AtTBP1, AtTRP1, AtTRB1, POT1, POT2, KU70, and KU80） and consist of tandem arrays of TTTAGGG. Among telomere-associated proteins in Arabidopsis thaliana, AtTRB proteins belong to the SMH （Single-Myb-Histone）-Iike family, in which proteins are composed of an N-terminal Myb domain, a central his- tone Hl-like globular domain, and a C-terminal coiled-coil region.

关键词： DNA结合结构域端粒结合蛋白组蛋白拟南芥 DNA序列 Arabidopsis 结合型家族

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

In vitro antibacterial activity and major bioactive components of Cinnamomum verum essential oils against cariogenic bacteria,Streptococcus mutans and Streptococcus sobrinus

引用

Asian Pacific Journal of Tropical Biomedicine 2016年第4期6卷 308-314页

作者： Okhee choi Su kyung cho Junheon Kim Chung Gyoo Park Jinwoo Kim Division of Applied Life Science (BK21 Plus) Gyeongsang National University Institute of Agriculture & Life Science Gyeongsang National University

Objective:To evaluate the antibacterial activity of Cinnamomum verum(***) from32 different essential oils against cariogenic bacteria,Streptococcus mutans(***)and Streptococcus sobrinus(***).Methods:The antibacterial activities of each essential oil were individually investigated against *** and *** essential oil of *** was selected for further evaluation against *** and *** chromatography mass spectrometry was used to determine the major constituents of *** essential *** addition,the minimum inhibitory concentration(MIC) and minimum bactericidal concentration of the most effective constituent was ***:The essential oil from *** exhibited the greatest antibacterial *** chromatography mass spectrometry analysis revealed that the major components of *** essential oil were cinnamaldehyde(56.3%),cinnamyl acetate(7.1%) and bphellandrene(6.3%).The MIC of cinnamaldehyde was measured using broth dilution *** MIC of cinnamaldehyde was 0.02%(v/v) against both bacterial strains *** minimum bactericidal concentration of cinnamaldehyde against *** and *** were 0.2% and 0.1%(v/v),***:The essential oil of *** and its major component cinnamaldehyde possessed considerable in vitro antibacterial activities against cariogenic bacteria,*** and *** *** results showed that the essential oil of *** and its bioactive component,cinnamaldehyde,have potential for application as natural agents for the prevention and treatment of dental caries.

关键词： Streptococcus mutans Streptococcus sobrinus Cariogenic bacteria Essential oil Antibacterial activity Cinnamaldehyde

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

Thoracic pyogenic infectious spondylitis presented as pneumothorax:A case report

引用

World Journal of Clinical Cases 2021年第6期9卷 1402-1407页

作者： Mi-kyung cho Byeong-Ju Lee Jae-Hyeok Chang Young-Mo Kim Department of Rehabilitation Medicine Pusan National University HospitalBusan 49241South Korea

BACKGROUND Pyogenic infectious spondylitis(PIS)is a rare condition,with an incidence between 0.2 and 2 cases per 100000 per ***’s most common symptom-back or neck pain-occurs in more than 90%of ***,we reported a case of thoracic PIS accompanied by pneumothorax in a 65-year-old male *** SUMMARY A 65-year-old man presented with right chest pain and *** initial erect posteroanterior chest radiography revealed pneumothorax,which was further evaluated by chest computed tomography,revealing pleural effusion in the right lung and a paravertebral abscess with bony destruction of vertebral *** on magnetic resonance imaging,the patient was diagnosed with thoracic infectious spondylitis with an anterior paravertebral *** was prescribed antibiotics and underwent neurosurgery due to aggravated symptoms and neurologic *** examination revealed that the cause of pleural effusion and pneumothorax was Staphylococcus aureus infection contiguously spread to lung *** several surgical treatments with intravenous antibiotic therapy for two months and transition to oral antibiotics(rifampin 600 mg qd and ciprofloxacin 500 mg bid),the patient received physical therapy to recover *** month after discharge,the patient had no chest pain or dyspnea,and exhibited no elevation in inflammatory markers or new thoracic *** To our knowledge,this is the very first report of a case of thoracic PIS with pneumothorax.

关键词： Chest pain Pneumothorax Pleural effusion Neurologic deficits Spondylitis Case report

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

Structurally engineered colloidal quantum dot phosphor using TiO_(2) photonic crystal backbone

引用

Light(Science & Applications) 2022年第11期11卷 2782-2789页

作者： Hansol Lee Tae-Yun Lee Yeonsang Park kyung-Sang cho Young-Geun Rho Hyuck choo Heonsu Jeon Department of Physics and Astronomy Seoul National UniversitySeoul 08826Republic of Korea Inter-university Semiconductor Research Center Seoul National UniversitySeoul 08826Republic of Korea Department of Physics Chungnam National UniversityDaejeon 34134Republic of Korea Institute of Quantum Systems Chungnam National UniversityDaejeon 34134Republic of Korea Samsung Advanced Institute of Technology Suwon 16678Republic of Korea Institute of Applied Physics Seoul National UniversitySeoul 08826Republic of Korea

Photonic crystal(PhC)phosphor,in which the phosphor material is periodically modulated for an enhancement in color-conversion efficiency via resonant absorption of excitation photons,is a paradigm-shifting structural phosphor ***-dimensional(2D)square-lattice PhC phosphor is currently considered the most advanced platform because of not only its high efficiency,but also its immunity to excitation *** the present study,two major modifications are made to further improve the performance of the 2D PhC phosphor:increasing the refractive index contrast and planarizing the *** index contrast is improved by replacing the PhC backbone material with TiO_(2)whereas the surface planarization is achieved by removing excessive colloidal quantum dots from the *** comparison with the reference phosphor,the upgraded PhC phosphor exhibits~59 times enhanced absorption(in simulations)and~7 times enhanced emission(in experiments),both of which are unprecedentedly *** results not only brighten the viability and applicability of the PhC phosphor but also spur the phosphor development through structural engineering of phosphor materials.

关键词： immunity phosphor backbone

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

FET-based nanobiosensors for the detection of smell and taste

引用

Science China(Life Sciences) 2020年第8期63卷 1159-1167页

作者： Dongseok Moon Yeon kyung Cha So-ong Kim Seongyeon cho Hwi Jin Ko Tai Hyun Park School of Chemical and Biological Engineering Institute of Chemical ProcessesSeoul National UniversitySeoul 08826Republic of Korea Interdisciplinary Program for Bioengineering Seoul National UniversitySeoul 08826Republic of Korea

Various nanobiosensors composed of biomaterials and nanomaterials have been developed,due to their demonstrated advantage of showing high *** various biomaterials for biological recognition elements of the nanobiosensor,sensory receptors,such as olfactory and taste receptors,are promising biomaterials for developing nanobiosensors,because of their high selectivity to target ***-effect transistors(FET)with nanomaterials such as carbon nanotube(CNT),graphene,and conducting polymer nanotube(CPNT),can be combined with the biomaterials to enhance the sensitivity of ***,many efforts have been made to develop nanobiosensors using biomaterials,such as olfactory receptors and taste receptors for detecting various smells and *** review focuses on the biomaterials and nanomaterials used in nanobiosensor systems and studies of various types of nanobiosensor platforms that utilize olfactory receptors and taste receptors which could be applied to a wide range of industrial fields,including the food and beverage industry,environmental monitoring,the biomedical field,and anti-terrorism.

关键词： nanobiosensor olfactory receptor taste receptor field-effect transistor(FET)

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

Realizing High Thermoelectric Performance in n-Type Se-Free Bi2Te3 Materials by Spontaneous Incorporation of FeTe2 Nanoinclusions

引用

Energy & Environmental Materials 2024年第4期7卷 344-354页

作者： Jamil Ur Rahman Woo Hyun Nam Yong-Jae Jung Jong Ho Won Jong-Min Oh Nguyen Van Du Gul Rahman Víctor M.García-Suárez Ran He Kornelius Nielsch Jung Young cho Won-Seon Seo Jong Wook Roh Sang-il Kim Soonil Lee Kyu Hyoung Lee Hyun Sik Kim Weon Ho Shin Leibniz Institute for Solid State and Materials Research Advanced Materials Convergence R&D Division Korea Institute of Ceramic Engineering & Technology Department of Electronic Materials Engineering Kwangwoon University Department of Energy Engineering Dankook University Faculty of Fundamental Science Phenikaa University Department of Physics Quaid-i-Azam University Departamento de Física Universidad de Oviedo Nanomaterials and Nanotechnology Research Center-CINN Department of Materials Science and Engineering Yonsei University School of Nano & Materials Science and Engineering Kyungpook National University Department of Materials Science and Engineering University of Seoul School of Materials Science and Engineering Changwon National University

Bi2Te3-based materials have drawn much attention from the thermoelectric community due to their excellent thermoelectric performance near room ***,the stability of existing n-type Bi2（Te,Se）3materials is still low due to the evaporation energy of Se (37.70 kJ mol-1) being much lower than that of Te (52.55 kJ mol-1).The evaporated Se from the material causes problems in interconnects of the module while degrading the efficiency.

关键词： Bi2Te3 energy harvesting FeTe2 nanoinclusion n-type materials thermoelectric

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Fish bone migration to the urinary bladder after rectosigmoid colon perforation

引用

World Journal of Gastroenterology 2014年第22期20卷 7075-7078页

作者： Min-kyung cho Moon-Soo Lee Hyun-Young Han Seung Hyo Woo Department of Surgery Eulji University HospitalDaejeon 302-799South Korea Department of Radiology Eulji University HospitalDaejeon 302-799South Korea Department of Urology Eulji University HospitalDaejeon 302-799South Korea

Fish bones are the most common foreign objects leading to bowel *** cases are confined to the extraluminal space without penetration of an adjacent ***,abscess formation due to the perforation of the rectosigmoid colon by a fish bone can lead to the penetration of the urinary bladder and may subsequently cause the fish bone to migrate into the urinary *** the presented case,a 42-yearold female was admitted for lower abdominal *** computed tomography(CT)demonstrated a 5cm pelvic abscess containing a thin and curvilinear foreign *** conservative management,the patient was *** 1 mo,the subject developed a mechanical *** had to be delayed due to her *** of the foreign body to the urinary bladder was shown on additional CT.A Yellowish fish bone 3.5 cm in size was removed through intraoperative *** patient was discharged 8 d after the operation without any unexpected event.

关键词： Fish bone Rectosigmoid colon perforation Urinary bladder Foreign body ingestion Foreign body induced bowel perforation

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

Turbulent vortex trains in narrow square arrayed rod bundles of a dual-cooled nuclear reactor

引用

Science China(Technological Sciences) 2013年第9期56卷 2143-2149页

作者： KIM Taehwan KIM kyung Min BAE Ji-Yeul SHIN Chang Hwan IN Wang-Kee cho Hyung Hee School of Mechanical Engineering Yonsei University Korea Atomic Energy Research Institute

The dual-cooled nuclear reactor is currently considered for improving the designs of current/future nuclear reactors. Investigation of the thermal-hydraulic characteristics of the nuclear reactor via experiments is essential for commercializing the dual-cooled nuclear reactor. In this paper, the turbulent flow in square arrayed six-rod bundles in the form of magnified copies of the dual-cooled and current OPR-1000 nuclear reactor is experimentally investigated by means of hot-wire anemometry and smoke-wire generation methods. Vortex trains which do not exist in an ordinary reactor subchannel are presented in the subchannel of the dual-cooled reactor. The vortices are induced by a span-wise velocity gradient. This flow pulsation phenomenon increases the inter-channel mixing of the subchannel. To understand the periodic feature of the pulsation, axial/cross velocities are measured and the periodic characteristic frequencies are obtained by a Fast Fourier Transform (FFT) analysis. The peak frequency that represents the quasi-periodic pulsation of the flow is increased with an increase in the axial velocity while the wavelength of the pulsation remains constant within a tested range of the Reynolds number (9000 51000). The vortex trains are highly synchronized with each other, as confirmed by means of visualization.

关键词： dual-cooled nuclear reactor vortex train flow pulsation turbulent mixing rod bundles

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

Gender-and Age-Group Specific Association of Persistent Organic Pollutants(POPs)Exposure with Diabetes Mellitus:Korean National Environmental Health Survey(KoNEHS)2015−2017

引用

Environment & Health 2024年第5期2卷 322-331页

作者： Inae Lee Min Joo Kim Sohyeon choi Young Joo Park Jeongim Park Gökçe Nur Ayaz Gowoon Lee Yoon Hee cho Hye Li Jeon Chulwoo Lee Gi Jeong Cheon Min Kyong Moon kyungho choi Graduate School of Public Health Seoul National UniversitySeoul 08826Republic of Korea Institute of Health and Environment Seoul National UniversitySeoul 08826Republic of Korea Department of Internal Medicine Seoul National University College of MedicineSeoul 03080Republic of Korea Seoul National University Hospital Healthcare System Gangnam Center Seoul 06236Republic of Korea Department of Environmental Health Sciences Soonchunhyang UniversityAsan 31538Republic of Korea Department of Molecular Medicine and Biopharmaceutical Sciences Graduate School of Convergence Science and TechnologySeoul National UniversitySeoul 08826Republic of Korea Center for Environmental Health Sciences Department of Biomedical and Pharmaceutical SciencesUniversity of MontanaMissoulaMontana 59812United States Environmental Health Research Division National Institute of Environmental ResearchMinistry of EnvironmentIncheon 22689Republic of Korea Department of Nuclear Medicine Seoul National University College of MedicineSeoul 03080Republic of Korea Division of Endocrinology Department of Internal MedicineSeoul National University Boramae Medical CenterSeoul 07061Republic of Korea

Exposure to persistent organic pollutants(POPs)has been reported as a potential risk factor for diabetes in ***,effect modifications by sex and age,especially among Asian populations,have seldom been *** the present study,we assessed associations of major POPs exposure including organochlorine pesticides(OCPs),polychlorinated biphenyls(PCBs),and polybrominated diphenyl ethers(PBDEs),with diabetes in Korean adults(n=1,295),a subset of the Korean National Environmental Health Survey(KoNEHS)Cycle 3(2015−2017).In the adult population,serum levels of dichlorodiphenyltrichloroethanes(DDTs)and PCB167 showed an increased odds ratio(OR)for *** stratified by gender,associations became stronger and more consistent in women:In women,serum levels of OCPs including p,p′-DDT,p,p′-dichlorodiphenyldichloroethylene(p,p′-DDE),andΣOCPs and mono-ortho PCBs,such as PCB118 and PCB157,were significantly associated with *** the male participants,however,no significant positive associations were *** stratified by a cutoff age of 50 years,most studied POPs except PBDEs,i.e.,p,p′-DDT,p,p′-DDE,PCB118,PCB157,PCB167,PCB138,and PCB153,showed significant associations with diabetes,in the older *** the younger group,however,no measured POPs showed a significant positive *** of endogenous sex hormones or interaction of POPs on aryl hydrocarbon receptors may partly explain the observed differences by gender and age,although further experimental confirmations should *** findings show that POPs exposure at the current levels is associated with diabetes among general Korean adults,and such associations could be modified by gender and age.

关键词： persistent organic pollutants diabetes age gender toxicity equivalency factor

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

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：