检索结果-南通市图书馆

Preventing condensation of objective lens in noncontact wide-angle viewing systems during vitrectomy

International Journal of Ophthalmology(English edition) 2018年第11期11卷 1809-1813页

作者： Jung Pil Lee Jinsoo Kim Inwon Park Ho ra Soonil Kwon Department of Ophthalmology Incheon Medical Center Department of Ophthalmology Hallym University Sacred Heart Hospital Department of Ophthalmology Bucheon St.Mary's Hospital Bucheon College of Medicine the Catholic University of Korea

AIM： To assess the optimal conditions for preventing condensation of objective lens during vitrectomy with noncontact wide-angle viewing systems（WAVSs）. METHODS： We explored the effectiveness of the coating with ophthalmic viscoelastic device（OVDs） on the corneal surface and the soaking the objective lens in warm-saline for preventing condensation of objective lens. First, to find the optimal soaking time to keep the objective lens warm, we measured the temperature of objective lens every minute after soaking in warm saline. Second, to find optimal distance between cornea and objective lens, which provide as wide a view as possible and less condensation at the same time, we measured the condensation time with different distances. With the obtained optimal soaking time and distance, we explored the effect of coating cornea with OVDs and soaking objective lens in warm saline on condensation ***： One and 5 min of soaking in warm saline was most effective for keeping the lens warm enough（45.1℃±2.1℃ for 1 min and 46.4℃±1.0℃ for 5 min, P=0.109）. The mean condensation times for the control group at 1, 3, and 5 mm from corneal surface to objective lens were 1±0.4, 4±1.4, 190±26.1 s, respectively, thus 5 mm was most optimal distance for vitrectomy with WAVSs. For the OVD coating group, the mean condensation times were 1.5±0.3, 13±1.4, and 200±23.9 s at 1, 3, and 5 mm distance and borderline significant compared with control group（P=0.068, 0.051, and 0.063, respectively）. With the 1-minute warm saline soaking group, the mean condensation time were extended to 188±34.4, 416±65.7, and 600±121.3 s at 1, 3, and 5 mm distance and statistically significant compared with control（P=0.043, 0.041 and 0.043, respectively）.CONCLUSION： OVD coating on corneal surface shows no difference on condensation time with control group. However, soaking the objective lens in warm saline revealed statistically significant extension of condensation time compared to control group. Therefore, k

关键词： condensation vitrectomy warm saline wide angle viewing systems

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

Analysis of intrahepatic sarcomatoid cholangiocarcinoma:Experience from 11 cases within 17 years

引用

World Journal of Gastroenterology 2019年第5期25卷 608-621页

作者： Dong Kyun Kim Bo ra Kim Jin Sook Jeong Yang Hyun Baek Department of Internal Medicine Dong-A University College of Medicine Department of radiology Dong-A University College of Medicine Department of Pathology Dong-A University College of Medicine

BACKGROUND Intrahepatic sarcomatoid chonalgiocarcinoma(s-CCC) is an extremely rare disease, accounting for less than 1% of hepatobiliary system malignancies, and its pathophysiology is not well known. On the hypothesis that its clinical, serologic,or radiologic diagnosis are not fully understood and its prognosis is poor, we investigated the distinguishing features of s-CCC compared with those of intrahepatic bile duct adenocarcinoma [cholangiocellular carcinoma(CCC)] in patients from a single *** To analyze the clinical, serologic, imaging, and histopathologic characteristics of intrahepatic s-CCC patients diagnosed in a single *** The clinical, serologic, imaging, and histopathologic features of 227 patients diagnosed with intrahepatic cholangiocarcinoma(IHCC) in a single medical center during the last 17 years were analyzed. The characteristics of 11 patients with s-CCC were compared with those of 216 patients with *** The number of patients with s-CCC who presented fever and abdominal pain and past history of chronic viral hepatitis or liver cirrhosis(LC) was higher than that of patients with CCC. In imaging studies, patients with s-CCC showed relatively aggressive features. However, no clear distinction was observed between s-CCC and CCC based on other clinical, serologic or radiologic examination results. An accurate diagnosis could be made only via a histopathologic examination through immunohistochemical staining. The clinical course of s-CCC was generally aggressive, and patients had a relatively poor *** In patients with s-CCC, early diagnosis through biopsy and aggressive treatment,including surgical resection, are important.

关键词： Intrahepatic sarcomatoid cholangiocarcinoma Immunohistochemical staining Survival Prognosis Surgical resection

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

Quality indicators in subtropical soils of Formosa,Argentina:Changes for agriculturization process

引用

International Soil and Water Conservation Research 2014年第4期2卷 13-24页

作者： Juan Esteban Baridón Roberto raúl Casas Universidad Nacional de La Plata Buenos AiresArgentina Laboratorio de Suelos Aguas y Forrajes.Centro de Validación de Tecnologías Agropecuarias IbarretaIbarreta(CP 3624)FormosaArgentina Centro de Investigación de Recursos Naturales.Instituto Nacional de Tecnología Agropecuaria:Dr.Nicolás Repetto(ex Las Cabañas)y Los Reseros Castelar(CP1712)Buenos AiresArgentina

The agriculturization process has been defined as the advance of annual crops in different environments,in competition with traditional land uses such as agriculture rotations with *** Argentina and other countries agriculturization has different degrees of impact on natural *** the northeast region of the province of Formosa,Argentina,agriculturization includes deforestation(clear cutting,slash burning and plowing),technological improvements and changes in land *** of these alterations,it is necessary to define the state of the soil to evaluate its *** can be done by means of indicators,which are not universal;they differ according to the use,management and type of soils,weather conditions and *** objectives of this paper are:(1)To identify quality indicators for subtropical Argiudolls and Hapludolls;(2)To determine which indicators related to organic matter are most affected during *** changes produced in the Typic Hapludolls and Typic Argiudolls after 25 years of continuously using native forests,agriculture,fruit plantations and pastures were *** changes were in pH,electrical conductivity,total organic carbon,particulate organic carbon,total nitrogen,structural stability,hydraulic conductivity,respiration and dehydrogenase and urease and enzyme *** with significant differences between diverse uses were evaluated by multivariate methods,Principal Component Analysis,and Correlation *** results of this study showed that total organic carbon,particulate organic carbon,structural stability and dehydrogenase activity are the quality indicators most affected by *** are related to organic matter.

关键词： Hapludolls Argiudolls Soil quality Soil use

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

MgO-based adsorbents for CO2 adsorption:Influence of structural and textural properties on the CO_2 adsorption performance

引用

Journal of Environmental Sciences 2017年第7期29卷 418-428页

作者： Gutiérrez-Bonilla Elvira Granados-Correa Francisco Sánchez-Mendieta Víctor Morales-Luckie raúl Alberto National Institute of Nuclear Research Department of ChemistryA.P.18-1027Col.EscandonMigud Hidalgo DelegationZip Code 1180 Mexico D.F.Mexico Autonomous University of Mexieo State Faculty of ChemistryColon avenueintersection with ride Tollocan s/n TolucaMexicoMexico

A series of MgO-based adsorbents were prepared through solution–combustion synthesis and ball-milling *** prepared MgO-based powders were characterized using X-ray diffraction,scanning electron microscopy,N_2 physisorption measurements,and employed as potential adsorbents for CO_2 *** influence of structural and textural properties of these adsorbents over the CO_2 adsorption behaviour was also *** results showed that MgO-based products prepared by solution–combustion and ball-milling processes,were highly porous,fluffy,nanocrystalline structures in nature,which are unique physico-chemical properties that significantly contribute to enhance their CO_2 *** was found that the MgO synthesized by solution combustion process,using a molar ratio of urea to magnesium nitrate（2：1）,and treated by ball-milling during 2.5 hr（MgO-BM2.5h）,exhibited the maximum CO_2 adsorption capacity of 1.611 mmol/g at 25℃ and 1 atm,mainly via *** CO_2 adsorption behaviour on the MgO-based adsorbents was correlated to their improved specific surface area,total pore volume,pore size distribution and *** reusability of synthesized MgO-BM2.5h was confirmed by five consecutive CO_2adsorption–desorption times,without any significant loss of performance,that supports the potential of MgO-based *** results confirmed that the special features of MgO prepared by solution–combustion and treated by ball-milling during 2.5 hr are favorable to be used as effective MgO-based adsorbent in post-combustion CO_2 capture technologies.

关键词： CO_2 adsorption MgO-based adsorbents Porous materials Solution–combustion synthesis Ball-milling process Textural properties

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

Arylamine N-acetyltransferase 2 genotype-dependent N-acetylation of isoniazid in cryopreserved human hepatocytes

引用

Acta Pharmaceutica Sinica B 2017年第4期7卷 517-522页

作者： Mark A.Doll raúl A.Salazar-González Srineil Bodduluri David W.Hein Department of Pharmacology and Toxicology and James Graham Brown Cancer Center University of LouisvilleLouisvilleKY 40202USA

Cryopreserved human hepatocytes were used to investigate the role of arylamine N-acetyltransferase 2 (NAT2; EC 2.***.1.5) polymorphism on the N-acetylation of isoniazid (INH). NAT2 genotype was determined by Taqman allelic discrimination assay and INH N-acetylation was measured by high performance liquid chromatography. INH N-acetylation rates in vitro exhibited a robust and highly significant (Prates in situ were INH concentration- and time-dependent. Following incubation for 24 h with 12.5 or 100 µmol/L INH, acetyl-INH concentrations varied significantly (P = 0.0023 and P = 0.0002) across cryopreserved human hepatocytes samples from rapid, intermediate, and slow acetylators, respectively. The clear association between NAT2 genotype and phenotype supports use of NAT2 genotype to guide INH dosing strategies in the treatment and prevention of tuberculosis.

关键词： Isoniazid N-Acetyltransferase 2 Acetylation polymorphism Human hepatocytes Genotype Phenotype

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

Choroidal changes in eyes treated with high-dose systemic corticosteroids for optic neuritis

引用

International Journal of Ophthalmology(English edition) 2020年第9期13卷 1430-1435页

作者： Jun Hyuk Lee Ji Young Lee Ho ra Nam Yeo Kang Jiwon Baek Department of Ophthalmology Bucheon St.Mary's HospitalCollege of Medicinethe Catholic University of KoreaGyeonggi-do 14647Republic of Korea Department of Ophthalmology Yeoeuido St.Mary's HospitalCollege of Medicinethe Catholic University of KoreaSeoul 06591Republic of Korea

AIM:To analyze the effect of systemic high-dose corticosteroid on the choroid in patients with unilateral optic ***:A retrospective comparative cohort ***-six eyes of 38 patients with unilateral optic neuritis that received systemic high-dose corticosteroid treatment were *** thickness(CT)and choroidal vascularity index(CVI)were measured in both affected and the fellow eyes at baseline,1 wk.1 and 3 *** in CT and CVI were analyzed in both eyes and compared between ***:The mean CT and CVI were 349μm and 0.70 in the affected eyes and 340μm and 0.69 in the fellow eyes at baseline(P=0.503 and 0.440,respectively).Decrement of CT and CVI at month 3 were significant in affected eyes(P=0.017 and P<0.001).Decreased CVI began 2 wk after treatment whereas CT decreased from 1 *** CVI also decreased significantly in fellow eyes at 3 mo compared to the baseline(P=0.001).CONCLUSION:A significant decrement in CT and CVI can appear after 3 mo in optic neuritis patients treated with high-dose systemic corticosteroid *** decrease in CVI appeared earlier than the decrease in CT,suggesting choroidal vasoconstriction caused by systemic steroid as a possible mechanism.

关键词： corticosteroid optic neuritis choroidal thickness prednisolone

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

A study of nonlinear age-structured population models

引用

International Journal of Biomathematics 2016年第6期9卷 211-223页

作者： Syed Tauseef Mohyud-Din A. Waheed M. M. ra.shidi Department of Mathematics Faculty of Sciences HITEC University Taxila Cantt Pakistan Department of Mathematics COMSATS Institute of Information Technology Attock Pakistan Shanghai Key Lab of Vehicle Aerodynamicsand Vehicle Thermal Management Systems Tongji University 3800 Cao An Road Jiading Shanghai 201803 P. R. China

This paper presents a novel analysis for the solution of nonlinear age-structured prob- lem which is of extreme importance in biological sciences. The presented model is very useful but quite complicated. Modified variational iteration method （MVIM） coupled with auxiliary parameter is used to cope with the complexity of the model which subse- quently shows better results as compared to some existing results available in literature. Furthermore, an appropriate way is used for the identification of auxiliary parameter by means of residual function. Numerical examples are presented for the analysis of the pro- posed algorithm. Graphical results along with the discussions re-confirm the efficiency of proposed algorithm. The work proposes a new algorithm where He＇s polynomials and an auxiliary parameter are merged with correction functional. The suggested scheme is implemented on nonlinear age-structured population models. Graphs are plotted for the residual function that reflects the accuracy and convergence of the presented algorithm.

关键词： Age-structured population models nonlinear problems modified variationaliteration method auxiliary parameter correction functional.

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

Comparative phytochemical analysis of Coffea benghalensis Roxb. Ex Schult, Coffea arabica L. and Coffea liberica Hiern

引用

Asian Pacific Journal of Tropical Medicine 2018年第8期11卷 480-485页

作者： éva Brigitta Patay ágnes Alberti Orsolya Csernák Szilvia Stranczinger Nóra Pap Department of Pharmacognosy Faculty of Pharmacy University of Pécs Department of Pharmacognosy Faculty of Pharmacy Semmelweis University Department of Plant Biology Faculty of Sciences University of Pécs

Objective: To make phytochemical studies of the leaf, pericarp and seed of Coffea benghalensis(C. Benghalensis) compared with those of the widely known Coffea arabica and Coffea liberica. Methods: The sample extracts were prepared by Soxhlet-extraction. Polyphenol content was analyzed by HPLC-ESI-MS/MS, the identification was carried out based on the retention time, UV and mass spectra of standards and literature data of the detected compounds. Results: Phenolic acids like caffeoylquinic acids, dicaffeoylquinic acids, feruloylquinic acids and coumaroylquinic acid, as well as mangiferin were detected as main constituents in all extracts. Procyanidin trimers were present exclusively in the leaves. In C. benghalensis, main constituents were 5-caffeoylquinic acid and 4-caffeoylquinic acid. Flavan-3-ols were described in all immature and mature pericarp and leaf extracts. Even though 4-feruloylquinic acid was described in both immature and mature seed, dicaffeoylquinic acids were identified only in the mature seed extracts. Mangiferin was present in the leaf, mature pericarp and seed. Conclusions: These analyses provide new chemotaxonomical data for the selected coffees, especially for C. benghalensis. Due to its high polyphenol content, our results indicate its significance of providing new data as a possible source for industry.

关键词： Coffee LC-MS Polyphenols Caffeoylquinic acids

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

Efficacy of a Community-Based Trauma Recovery Program after a Fire Disaster

引用

International Journal of Mental Health Promotion 2022年第1期24卷 85-94页

作者： Yun-Jung Choi Mi-ra Won Dong-Hee Cho Red Cross College of Nursing Chung-Ang UniversitySeoulKorea Department of Nursing Daewon University CollegeJecheonKorea

As industries develop,fire disasters and their associated damage are *** the mental health of victims is imperative because this is an essential issue for community recovery after a *** study was conducted to determine the efficacy of a program implemented by a community mental health center based on the investigation of the victims’depression and post-traumatic stress disorder(PTSD)levels immediately after the disaster and at one-year *** a result,victims’depression and PTSD recovered over time,and more changes were *** particular,the high-risk group for PTSD showed a high program participation rate,and there was significant recovery over time compared with the group without *** on these results,community mental health programs are an effective way to increase community mental health after *** the future,community-based recovery programs after disasters should be expanded,and administrative support for them should be developed.

关键词： Fire disaster victims post-traumatic stress disorder depression community mental health services

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

Effects of Stress, Depression, and Problem Drinking on Suicidal Ideation among Korean Workers

引用

International Journal of Mental Health Promotion 2021年第2期23卷 189-199页

作者： Yun-Jung Choi Mi-ra Won Youn-Joo Um Red Cross College of Nursing Chung-Ang UniversitySeoulKorea Department of Nursing Daewon University CollegeJecheonKorea Graduate School of Nursing Chung-Ang UniversitySeoulKorea

The mental health of workers is an important issue that affects not only individuals and their families but also workplaces and ***,it is necessary to regularly evaluate and analyze workers’mental health status,including levels of stress,depression,and addictive behaviors to apply thesefindings in creating mental health promotion *** study aims to provide basic data that would facilitate early intervention for workers’mental health problems by analyzing factors such as stress,depression,and problem drinking that can affect suicidal *** April 15 to October 25,2019,a survey was conducted with 165 workers across six workplaces in a Korean *** was performed using descriptive statistics,correlation,and simple and multiple regression analyses using the R statistics program *** was no difference in suicidal ideation scores based on the participants’general characteristics,while there was a significant positive correlation among stress,depression,problem drinking,and suicidal *** addition,severe depression,severe stress,and severe problem drinking had significant effects on suicidal ideation,and among the subitems of stress,somatic symptoms had an effect on suicidal *** addition,severe stress,somatic symptoms,depression,and severe problem drinking had a significant effect on suicidal ideation in males but not in *** is necessary to identify the effects of stress,depression,drinking problems,and suicide on workers’mental health,and evaluate their mental health systemati-cally and regularly to recognize whether active psychiatric treatment and nursing intervention are necessary as well as preventive *** addition,it is meaningful to pay attention to the suicide ideation of adult workers and provide basic data to promote systematic public health policies on mental health.

关键词： Alcohol depression mental health stress suicidal ideation

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：