检索结果-南通市图书馆

Laparoscopic partial cystectomy with mucosal stripping of extraluminal duodenal duplication cysts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2014年第4期20卷 1123-1126页

作者： Jeik Byun Hyoung-Min Oh Soo-Hong Kim Hyun-Young Kim sung-eun jung Kwi-Won Park Woo-Sun Kim Department of Pediatric Surgery Seoul National University Children’s Hospital Department of Radiology Seoul National University Hospital

Duodenal duplication cysts are rare congenital *** duplication should be considered in the differential diagnosis of patients who present with abdominal symptoms with cystic structures neighboring the ***,we present an 8-year-old girl with a duodenal duplication cyst treated with partial cystectomy with mucosal stripping performed *** surgery can be considered as a treatment option for duodenal duplication cysts,especially in extraluminal locations.

关键词： Duodenal duplication cyst Laparoscopic surgery Partial cystectomy Extraluminal situation Children

Neonatal gastric perforation: A single center experience

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2014年第8期6卷 151-155页

作者： Jeik Byun Hyun Young Kim Seung Yeon Noh Soo Hong Kim sung eun jung Seong Cheol Lee Kwi Won Park Department of Pediatric Surgery Seoul National University Children’s Hospital

AIM: To determine the etiology and prognostic factors for neonatal gastric perforation(NGP), a rare but life-threatening ***: Between 1980 and 2011, nine patients un-derwent surgical intervention for NGP at Seoul National University Children's Hospital. The characteristics and prognosis of the patients were retrospectively ***: Among the nine patients, three(33.3%) were preterm babies and five(55.5%) had associated anomalies, which included diaphragmatic eventration(n = 2), congenital diaphragmatic hernia, esophageal atresia with tracheoesophageal fistula, and antral web. Three(33.3%) patients were born before 1990 and three(33.3%) had a birth weight < 2500 g. Pneumo-peritoneum was found on preoperative images in six(66.7%) patients, and incidentally in the other three(33.3%) patients. Surgery was performed within 24 h after the onset of symptoms in seven(77.8%) patients. The overall mortality rate was 22.2%(2/9). The time between symptoms and surgical intervention was the only prognostic factor for survival, whereas premature birth and birth weight were ***: Early detection and advances in neo-natal intensive care may improve the prognosis of NGP.

关键词： Neonate Gastric perforation Etiology Prognosis Surgical intervention

Synthesis of Fe_3O_4-coated silica aerogel nanocomposites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2012年第S3期22卷 702-706页

作者： Jun sung LEE eun jung LEE Hae Jin HWANG Devision of Materials Science and Engineering Inha University

Fe3O4:SiO2 nanocomposite powders were synthesized by a two-step process,which included the precipitation of FeCl2 and FeCl3 and the gelation of silicic acid solution derived from water *** first,Fe3O4 nanoparticles having a crystallite size of 20 nm were obtained by controlling the ratio of Fe(II) and Fe(III) *** the second step,Fe3O4 particles were embedded in SiO2 matrix by the hydrolysis and subsequent condensation of the silicic acid solution containing Fe3O4 *** was found that the Fe3O4 nanoparticles homogenously disperse in the SiO2 *** Fe3O4:SiO2 nanocomposite exhibited an enhanced thermal stability against oxidation compared with pure ***-IR analysis indicates the presence of the Si-O-Fe bond in the Fe3O4:SiO2 (1:10,mole fraction) nanocomposite.

关键词： nanocomposite Fe3O4 SiO2 sol gel synthesis

Possibility of Solid Hydrometeor Growth Zone Identification Using Radar Spectrum Width

在线全文

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2023年第2期40卷 317-332页

作者： sung-Ho SUH eun-Ho CHOI Hong-Il KIM Woonseon jung Flight Safety Technology Division NARO Space CenterKorea Aerospace Research Institute(KARI)508 Haban-roBongrae-myeonGoheung-gunJeollanam-do 59571Republic of Korea Research Applications Department National Institute of Meteorological Sciences33Seohobuk-roSeoqwipo-siJeju-do 63568Republic of Korea

In this study,the correlation between simulated and measured radar velocity spectrum width(σ_(v))is *** results show that the dendrites growth zones(DGZs)and needles growth zones(NGZs)mostly contain dendrites(DN)and needles(NE),***σ_(v) zones(1.11.2 m s^(-1),a differential reflectivity(ZDR)higher than 0 dB,and a cross-correlation coefficient(ρhv)less than *** contrast,prolate particles with relatively uniform shapes were observed in the NGZ withσ_(v)<0.6 m s^(-1),a ZDR less than 0 dB,andρhv higher than *** simulation results show that the DN exhibited a largerσ_(v) compared to the NE,and this observedσ_(v) was strongly dependent on the wind fluctuations(v’)due to turbulence or wind *** contrast,the NE exhibited a significantly smallσ_(v)~0.55 m s^(-1),which converges irrespective of v’.In addition,a strong correlation between the measuredσ_(v) values at five radar elevation angles(θ=6.2°,9.1°,13.1°,19°,and 80°)and those simulated in this study confirmed the significance of the analysis results.

关键词： spectrum width weather radar aerodynamic properties dendritic growth zone hydrometeor classifications

Sex-and gender-specific disparities in colorectal cancer risk

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第17期21卷 5167-5175页

作者： sung-eun Kim Hee Young Paik Hyuk Yoon jung eun Lee Nayoung Kim Mi-Kyung sung Department of Food and Nutrition Sookmyung Women’s UniversitySeoul 140-742South Korea Department of Food and Nutrition Seoul National UniversitySeoul 151-742South Korea Department of Internal Medicine Seoul National University Bundang HospitalSeongnam 463-707South Korea

Colorectal cancer is one of the most common causes of cancer morbidity both in men and in ***,females over 65 years old show higher mortality and lower 5-year survival rate of colorectal cancer compared to their age-matched male *** objective of this review is to suggest gender-based innovations to improve colorectal cancer outcomes in *** have a higher risk of developing right-sided(proximal) colon cancer than men,which is associated with more aggressive form of neoplasia compared to left-sided(distal) colon *** differences in tumor location between women and men,most of scientific researchers do not consider sex specificity for study design and ***,colorectal cancer screening guidelines do not distinguish females from male,which may explain the higher frequency of more advanced neoplasia when tumors are first detected and false negative results in colonoscopy in ***,socio-cultural barriers within females are present to delay screening and *** studies,among studies that included both men and women,have reported sex-specific estimates of dietary risk factors which are crucial to establish cancer prevention guidelines despite sex-and genderassociated differences in nutrient metabolism and dietary ***,anti-cancer drug use for colorectal cancer treatment can cause toxicity to the reproductive system,and gender-specific recurrence and survival rates are ***,by understanding sex-and gender-related biological and socio-cultural differences in colorectal cancer risk,gender-specific strategies for screening,treatment and prevention protocols can be established to reduce the mortality and improve the quality of life.

关键词： Colorectal cancer Sex Gender Screening Treatment Prevention

Roles of somatic A-type K^+ channels in the synaptic plasticity of hippocampal neurons

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2014年第3期30卷 505-514页

作者： Yoon-Sil Yang Kyeong-Deok Kim Su-Yong eun sung-Cherl jung Department of Physiology School of Medicine Jeju National University Institute of Medical Science Jeju National University

In the mammalian brain, information encoding and storage have been explained by revealing the cellular and molecular mechanisms of synaptic plasticity at various levels in the central nervous system, including the hippocampus and the cerebral cortices. The modulatory mechanisms of synaptic excitability that are correlated with neuronal tasks are fundamental factors for synaptic plasticity, and they are dependent on intracellular Ca2＋-mediated signaling. In the present review, the A-type K＋（IA） channel, one of the voltage-dependent cation channels, is considered as a key player in the modulation of Ca2＋ influx through synaptic NMDA receptors and their correlated signaling pathways. The cellular functions of IA channels indicate that they possibly play as integral parts of synaptic and somatic complexes, completing the initiation and stabilization of memory.

关键词： A-type K+ channels intrinsic excitability synaptic plasticity NMDA receptors Kv4.2

Effects of ocean acidifi cation driven by elevated CO_2 on larval shell growth and abnormal rates of the venerid clam, Mactra veneriformis

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Oceanology and Limnology 2016年第6期34卷 1191-1198页

作者： Jee-Hoon KIM Ok Hwan YU eun Jin YANG sung-Ho KANG Won KIM eun jung CHOY Division of Polar Ocean Environment Research Korea Polar Research Institute Korea Institute of Ocean Science and Technology School of Biological Sciences Seoul National University Marine Ecosystem Research Division Korea Institute of Ocean Science and Technology

A bstract The venerid clam(M actra veneriformis Reeve 1854) is one of the main cultured bivalve species in intertidal and shallow subtidal ecosystems along the west coast of Korea. To understand the effects of ocean acidifi cation on the early life stages of Korean clams, we investigated shell growth and abnormality rates and types in the D-shaped, umbonate veliger, and pediveliger stages of the venerid clam M. veneriformis during exposure to elevated seawater pCO_2. In particular, we examined abnormal types of larval shell morphology categorized as shell deformations, shell distortions, and shell fi ssures. Specimens were incubated in seawater equilibrated with bubbled CO_2-enriched air at(400±25)×10^(-6)(ambient control),(800±25)×10^(-6)(high pCO_2), or(1 200±28)×10^(-6)(extremely high pCO_2), the atmospheric CO_2 concentrations predicted for the years 2014, 2084, and 2154(70-year intervals; two human generations), respectively, in the Representative Concentration Pathway(RCP) 8.5 scenario. The mean shell lengths of larvae were signifi cantly decreased in the high and extremely high pCO_2 groups compared with the ambient control groups. Furthermore, under high and extremely high pCO_2 conditions, the cultures exhibited signifi cantly increased abundances of abnormal larvae and increased severity of abnormalities compared with the ambient control. In the umbonate veliger stage of the experimental larvae, the most common abnormalities were shell deformations, distortions, and fi ssures; on the other hand, convex hinges and mantle protuberances were absent. These results suggest that elevated CO_2 exerts an additional burden on the health of M. veneriformis larvae by impairing early development.

关键词： abnormality larval shell growth Mactra veneriformis ocean acidifi cation pCO2

Dynamic enhanced computed tomography imaging findings of an inflammatory fibroid polyp with massive fibrosis in the stomach

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2017年第11期23卷 2090-2094页

作者： eun jung Shim sung eun Ahn Dong Ho Lee Seong Jin Park Youn Wha Kim Department of Radiology Kyung Hee University HospitalGraduate SchoolKyung Hee University Department of Pathology Kyung Hee University HospitalGraduate SchoolKyung Hee University

Inflammatory fibroid polyp(IFP) is a rare benign lesion of the gastrointestinal tract. We report a case of computed tomography(CT) imaging finding of a gastric IFP with massive fibrosis. CT scans showed thickening of submucosal layer with overlying mucosal hyperenhancement in the gastric antrum. The submucosal layer showed increased enhancement on delayed phase imaging. An antrectomy with gastroduodenostomy was performed because gastric cancer was suspected, particularly signet ring cell carcinoma. The histopathological diagnosis was an IFP with massive fibrosis. The authors suggest that when the submucosal layer of the gastric wall is markedly thickened with delayed enhancement and preservation of the mucosal layer, an IFP with massive fibrosis should be considered in the differential diagnosis.

关键词： Inflammatory fibroid polyp Gastric polyp Gastric submucosal tumor Signet ring cell carcinoma Computed tomography imaging finding

Clinical characteristics of Helicobacter pylori-negative drugnegative peptic ulcer bleeding

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2015年第28期21卷 8636-8643页

作者： Woo Chul Chung eun jung Jeon Dae Bum Kim Hea jung sung Yeon-Ji Kim eun Sun Lim Min-ah Kim jung Hwan Oh Department of Internal Medicine St. Paul’s HospitalCollege of Medicine the Catholic University of Korea

AIM:To investigate the clinical characteristics and outcomes of idiopathic Helicobacter pylori(***)-negative and drug-negative]peptic ulcer bleeding(PUB).METHODS:A consecutive series of patients who experienced PUB between 2006 and 2012 was retrospectively analyzed.A total of 232 patients were enrolled in this *** patients were divided into four groups according to the etiologies of PUB:idiopathic,***-associated,drug-induced and combined(***-associated and drug-induced)*** compared the clinical characteristics and outcomes between the *** the silver stain or rapid urease tests were ***-negative,we obtained an additional biopsy specimen by endoscopic re-examination and performed an *** antibody test 6-8 wk after the initial endoscopic *** a diagnosis of idiopathic PUB,a negative result of an *** antibody test was *** all cases,re-bleeding was confirmed by endoscopic *** the risk assessment,the Blatchford and the Rockall scores were calculated for all ***:For PUB,the frequency of *** infection was 59.5%(138/232),whereas the frequency of idiopathic cases was 8.6%(20/232).When idiopathic PUB was compared to ***-associated PUB,the idiopathic PUB group showed a higher rate of rebleeding after initial hemostasis during the hospital stay(30%vs 7.4%,P = 0.02).When idiopathic PUB was compared to drug-induced PUB,the patients in the idiopathic PUB group showed a higher rate of rebleeding after initial hemostasis upon admission(30%vs 2.7%,P < 0.01).When drug-induced PUB was compared to ***-associated PUB,the patients in the drug-induced PUB were older(68.49 ± 14.76 years vs 47.83 ± 15.15 years,P< 0.01) and showed a higher proportion of gastric ulcer(77%vs 49%,P < 0.01).However,the Blatchford and the Rockall scores were not significantly different between the two *** the patients who experienced drug-induced PUB,no significant differences were found with respect

关键词： Peptic ulcer Gastrointestinal bleeding Helicobacter pylori Non-steroidal anti-inflammatorydrug