检索结果-南通市图书馆

Patterns in the relationship between acute COVID-19/long COVID-19 and quality of life:A cross-sectional study of patients attending a tertiary care hospital in Turkey

引用

Asian Pacific Journal of Tropical Medicine 2022年第6期15卷 274-282页

作者： Hakan Tuzun Cansu Ozbaş Burkay Budak Gizem Altunay F.N.baran Aksakal Department of Public Health Faculty of MedicineGazi UniversityAnkaraTurkey

Objective:To determine the change in the quality of life(QoL)of patients who applied to a tertiary outpatient clinic according to their COVID-19 ***:This cross-sectional study comprised 1370 *** form-12(SF-12),which includes Physical Component Summary(PCS)and Mental Component Summary(MCS)domains,was used to evaluate the *** linear regression models created using PCS-12 and MCS-12 were dependent ***:A total of 19.2% of participants had acute COVID-19,and 8.4%had long *** most common sypmtoms were fatigue(72.6%),headache(42.5%),and joint pain(39.8%)in patients with long *** model including all participants showed that long COVID-19 reduced the QoL in multivariate analysis for both MCS and PCS,while acute COVID-19 had no significant effect on the QoL comparing with those without *** that included participants with COVID-19 showed that long COVID-19 negatively affected the QoL in the multivariate model for PCS-12 and *** that were significant in the multivariate model for those who had long COVID-19 were having a chronic disease and presence of ongoing *** were disadvantaged for PCS-12 and MCS-12 in the multivariate models including all participants,and models including participants who have had *** educational group were disadvantaged for PCS-12 in the multivariate model including all *** group were also disadvantaged for PCS-12 and MCS-12 in the multivariate models including participants who had ***:In studies,acute COVID-19 and long COVID-19 should be treated as separate *** effects of long COVID-19 should be considered when providing and planning health *** effect of gender,and education,on QoL shows that health inequalities continue to be effective during the pandemic period.

关键词： Long COVID-19 Acute COVID-19 Quality of life Pandemic Health ineaqualities

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

Comparison of contrast sensitivity and visual acuity between deep anterior lamellar keratoplasty and penetrating keratoplasty in patients with keratoconus

引用

International Journal of Ophthalmology(English edition) 2012年第6期5卷 737-741页

作者： Mehmet Orcun Akdemir baran Kandemir Isil Bahar Sayman Cem Selvi OmerKamil Dogan Department of Ophthalmology School of Medicine Bulent Ecevit University Kartal Lutfi K1rdar Research and Education Hospital Darica Armedica Eye Hospital Kudret Eye Hospital

AIM: To evaluate postoperative visual acuity and contrast sensitivity results following deep anterior lamellar keratoplasty (DALK) and penetrating keratoplasty (PK) in patients with keratoconus (KC). METHODS: All the patients’ records with KC who had PK or DALK surgery between May 2010 and May 2011 were retrospectively reviewed. Sixty patients who underwent successful corneal transplantation for KC: 30 eyes underwent DALK and 30 eyes underwent PK were included in this study. Preoperative and postoperative mean logarithm of the minimum angle of resolution (logMAR) uncorrected visual acuity (UCVA), logMAR best spectacle-corrected visual acuity (BSCVA) and intraocular pressure (IOP) were evaluated. Contrast sensitivity tests (CS) were done preoperative and 2 months after all sutures had removed. All surgeries were performed under regional anesthesia (retrobulbar anesthesia) by 1 surgeon (B.K.) who was experienced in penetrating and lamellar keratoplasty techniques. RESULTS: The mean age of the DALK group was 29.67±4.95 (range 18-40) years and the PK group was 28.7±3.53 (range 18-39) years. Preoperatively there was no significant difference in the logMAR UCVA, logMAR BSCVA and IOP between the DALK (1.281±0.56; 0.97±0.85; 12.07±2.12mmHg) and PK (1.34±0.21; 0.98±0.21; 13±2.12mmHg) groups. One-year after surgery there was no significant difference in the mean logMAR UCVA and IOP between the DALK (0.46±0.37; 11.73±2.1mmHg) and PK (0.38±0.21; 12±2.12mmHg) groups. The mean contrast sensitivity was evaluated by CC-100 Topcon LCD at 1.5, 2.52, 4.23, 7.10 and 11.91 cycles per degree (cs/deg) spatial frequencies before and 2 months after the all sutures had removed. CONCLUSION: All patients with keratoconus in both DALK and PK groups performed good visual function postoperatively. The mean contrast sensitivity increased considerably at all spatial frequencies compared with preoperative levels in the DALK and PK groups. The mean post-operative evaluation of contrast sensitivity me

关键词： contrast sensitivity keratoconus corneal transplantation

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

Prediction of coal ash fusion temperatures using computational intelligence based models

引用

International Journal of Coal Science & Technology 2018年第4期5卷 486-507页

作者： Sanjeev S.Tambe Makarand Naniwadekar Shishir Tivvary Ashis Mukherjee Tarit baran Das Chemical Engineering and Process Development Division CSIR-National Chemical LaboratoryDr.Homi Bhabha RoadPashanPune 411008India Chemical Engineering Department All India Shri Shivaji Memorial Society's College of Engineering (AISSMSCOE)Kennedy RoadPune 411001India Savitribai Phule Pune University (SPPU) Ganeshkhind RoadPune 411007India Combustion Science and Technology CSIR-Central Institute of Mining and Fuel Research (CIMFR)Dhanbad 826015India Mineral Technology CSIR-Central Institute of Mining and Fuel Research (CIMFR)Dhanbad 826015India

In the coal-based combustion and gasification processes, the mineral matter contained in the coal (predominantly oxides), is left as an incombustible residue, termed ash. Commonly, ash deposits are formed on the heat absorbing surfaces of the exposed equipment of the combustion/gasification processes. These deposits lead to the occurrence of slagging or fouling and. consequently, reduced process efficiency. The ash fusion temperatures (AFTs) signify the temperature range over which the ash deposits are formed on the heat absorbing surfaces of the process equipment. Thus, for designing and operating the coal-based processes, it is important to have mathematical models predicting accurately the four types of AFTs namely initial deformation temperature, softening temperature, hemispherical temperature, and flow temperature. Several linear/nonlinear models with varying prediction accuracies and complexities are available for the AFT prediction. Their principal drawback is their applicability to the coals originating from a limited number of geographical regions. Accordingly, this study presents computational intelligenee (CI) based nonlinear models to predict the four AFTs using the oxide composition of the coal ash as the model input. The CI methods used in the modeling are genetic programming (GP), artificial neural networks, and support vector regression. The no table features of this study are that the models with a better AFT prediction and generalization performanee, a wider application potential, and reduced complexity, have been developed. Among the Ci-based models, GP and MLP based models have yielded overall improved performanee in predicting all four AFTs.

关键词： Ash fusion temperature Artificial neural networks Support vector regression Genetic programming Data-driven modeling

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

Energy use efficiency and greenhouse gas emissions(GHG)analysis of garlic cultivation in Turkey

引用

International Journal of Agricultural and Biological Engineering 2023年第4期16卷 63-67页

作者： Mehmet Fırat baran Cihan Demir Ahmet Konuralp Eliçin Osman Gökdoğan Department of Biosystem Engineering Faculty of AgricultureUniversity of SiirtSiirtTurkey Department of Mechanical and Metal Technologies Vocational School of Technical SciencesUniversity of KırklareliKırklareliTurkey Department of Agricultural Machinery and Technologies Engineering Faculty of AgricultureUniversity of DicleDiyarbakırTurkey Department of Agricultural Machinery and Technologies Engineering Faculty of AgricultureIsparta University of Applied SciencesIspartaTurkey

This study has been conducted with the purpose of determining energy use efficiency and greenhouse gas emissions of garlic cultivation during the 2020-2021 cultivation season in Adıyaman province of ***,observations and field works were performed in 134 garlic farms in the region through simple random *** garlic cultivation,energy input was calculated as 32103.20 MJ/hm^(2)and energy output was calculated as 30096 MJ/hm^(2).With regards to the three highest inputs in garlic production,46.66%of the energy inputs consisted of chemical fertilizers energy(14979.26 MJ/hm^(2)),11.29%consisted of farmyard manure energy(3625.71 MJ/hm^(2))and 10.48%consisted of human labour energy(3363.36 MJ/hm^(2)).Energy use efficiency,specific energy,energy productivity and net energy in garlic cultivation were calculated as 0.94,1.71 MJ/kg,0.59 kg/MJ,and−2007.20 MJ/hm^(2),*** total energy input consumed in garlic cultivation was classified as 27.19%direct energy,72.81%indirect energy,35.17%renewable energy and 64.87%nonrenewable *** GHG emissions and GHG ratio were calculated as 8636.60 kg CO_(2)-eq/hm^(2)and 0.46 kg CO_(2)-eq/kg,respectively.

关键词： Energy use efficiency garlic greenhouse gas emissions specific energy Turkey

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

Protective effect of ascorbic acid on cyclophosphamide induced testicular gametogenic and androgenic disorders in male rats

引用

Asian Journal of Andrology 2002年第3期4卷 201-207页

作者： Ujjal baran Das Mousumi Mallick Jogendra Mohan Debnath Debidas Ghosh Reproductive Endocrinology and Family Welfare Research Unit Department of Human Physiology with Community HealthVidyasagar UniversityMidnapore-721102West BengalIndia.

Aim:To study the detrimental effects of cyclophosphamide on the testicular androgenic and gametogenic activities through endocrine inhibition and/or induction of oxidative stress in male albino rats and to evaluate the protective effect of ascorbic ***:The testicular△^(5),3β-hydroxysteroid dehydrogenase(HSD),17β-HSD,peroxidase and catalase activities along with the levels of malondialdehyde(MDA)and conjugated dienes in testicular tissue were measured for the evaluation of testicular oxidative *** plasma testosterone(T)level was measured by *** germ cells at stageⅦof spermatogenic cycle were quantified from testicular stained ***:Cyclophosphamide treatment results in a significant inhibition in the testicular△^(5),3β-HSD and 17β-HSD activities,a decrease in plasma T level and a diminution in the counts of various germ ***,this treatment was also associated with a significant inhibition of the peroxidase and catalase activities along with high levels of MDA and conjugated dienes in the *** these changes were reversed by ascorbic acid ***:Cyclophosphamide treatment at the dosage used caused testicular gametogenic and androgenic disorders as well as induced testicular oxidative stress that can be reversed by ascorbic acid co-administration.

关键词： Cyclophosphamide androgenesis gametogenesis oxidative stress free radicals ascorbic acid catalase peroxidase testosterone

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

Phytochemical Analysis and Antioxidant Activity of Crocus speciosus Leaves

引用

Phyton-International Journal of Experimental Botany 2022年第1期91卷 207-221页

作者： Olha Mykhailenko Ivan Bezruk Victoriia Volochai volodymyr Mishchenko Liudas Ivanauskas Victoriya Georgiyants Department of Pharmaceutical Chemistry National University of PharmacyKharkiv61168Ukraine Department of Pharmacognosy National University of PharmacyKharkiv61168Ukraine Department of Quality Standardisation and Certification of DrugsNational University of PharmacyKharkiv61001Ukraine Department of Analytical and Toxicological Chemistry Lithuanian University of Health SciencesKaunas44307Lithuania

The numerous studies indicate leaves of plants are a rich source of bioactive compounds that can be a valuable source of compounds used in the pharmaceutical and cosmetic *** of this study was to investigate the chemical composition and the antioxidant property of Crocus speciosus *** phytochemical screening of *** leaves revealed the presence of some following compound categories such as phenolic compounds,aminoacids,saponins,proteins,tannins,triterpenoids,glycosides,*** total flavonoids and phenolic compounds content were determined spectrophotometrically and by HPLC-DAD and *** activity was determined by ABTS radical-cation scavenging method,*** total amount of flavonoids in *** leaves was 1.07±0.02 mg RE/g(p<0.05),the total amount of phenolic compounds was 0.41±0.01 mg GAE/g(p<0.05).By HPLC-DAD-MS analysis the presence of the mangiferin,chlorogenic acid,isoorientin,kaempferol,hyperoside,and isoquercitin was established for the first time in Crocus *** antiradical activity of *** leaves extracts was 150.08±4.5μmol/g(p<0.05)and its was mainly attributed to phenolic compounds *** high amounts of flavonoids and antiradical activity in *** leaves suggests promising phytochemical and pharmacological study of this Crocus species.

关键词： Crocus speciosus flavonoids leaves antiradical activity

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

Reinforcement Learning Model for Energy System Management to Ensure Energy Efficiency and Comfort in Buildings

引用

Energy Engineering 2024年第12期121卷 3617-3634页

作者： Inna Bilous Dmytro Biriukov Dmytro Karpenko Tatiana Eutukhova Oleksandr Novoseltsev volodymyr Voloshchuk Department of Heat and Alternative Power Engineering National Technical University of Ukraine“KPI”Kyiv03056Ukraine Department of Structural Transformation of the Fuel and Energy Complex General Energy Institute of NAS of UkraineKyiv03150Ukraine

This article focuses on the challenges ofmodeling energy supply systems for buildings,encompassing both methods and tools for simulating thermal regimes and engineering systems within *** the comfort of living or working in buildings often necessitates increased consumption of energy and material,such as for thermal upgrades,which consequently incurs additional economic *** is crucial to acknowledge that such improvements do not always lead to a decrease in total pollutant emissions,considering emissions across all stages of production and usage of energy and materials aimed at boosting energy efficiency and comfort in *** addition,it explores the methods and mechanisms for modeling the operating modes of electric boilers used to collectively improve energy efficiency and indoor climatic *** the developed mathematical models,the study examines the dynamic states of building energy supply systems and provides recommendations for improving their *** dynamic models are executed in software environments such as MATLAB/Simscape and Python,where the component detailing schemes for various types of controllers are ***,controllers based on reinforcement learning(RL)displayed more adaptive load level *** RL-based controllers can lower instantaneous power usage by up to 35%,reduce absolute deviations from a comfortable temperature nearly by half,and cut down energy consumption by approximately 1%while maintaining *** the energy source produces a constant energy amount,the RL-based heat controllermore effectively maintains the temperature within the set range,preventing *** conclusion,the introduced energydynamic building model and its software implementation offer a versatile tool for researchers,enabling the simulation of various energy supply systems to achieve optimal energy efficiency and indoor climate control in buildings.

关键词： Building energy management building heating system dynamic modeling reinforcement learning energy efficiency comfortable temperature

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

Luminescent properties of praseodymium doped Y_2O_3 and LaAlO_3 nanocrystallites and polymer composites

引用

Journal of Rare Earths 2011年第12期29卷 1123-1129页

作者： M.Dudek A.Jusza K.Anders L.Lipińska M.baran R.Piramidowicz Faculty of Physics Warsaw University of Technology Institute of Microelectronics and Optoelectronics Warsaw University of Technology Institute of Electronic Materials Technology

Luminescent properties of Y2O3 and LaAlO3 nanopowders doped with Pr^3＋ ions and PMMA-based composite materials doped with these powders were reported. The set of active nanopowders differing in praseodymium ions concentration was prepared using sol-gel method and carefully characterized with respect to emission properties in the visible spectral range. In particular, the excitation and emission spectra were measured together with fluorescence decay profiles and the differences between optical properties of these materials were discussed and compared with data available for bulk materials. Finally, the PMMA-based composite materials doped with Pr^3＋：Y2O3 and Pr^3＋：LaAlO3 nanopowders were manufactured and characterized. The obtained results showed that polymer composites doped with active nanopowders in general tended to keep the luminescent properties of the original nanopowders.

关键词： nanocrystals praseodymium Y2O3 LaAlO3 visible emission PMMA nanocomposites rare earths

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

The use of metal hydrides in fuel cell applications

引用

Progress in Natural Science:Materials International 2017年第1期27卷 3-20页

作者： Mykhaylo V.Lototskyy Ivan Tolj Lydia Pickering Cordellia Sita Frano Barbir volodymyr Yartys HySA Systems Competence Centre South African Institute for Advanced Materials Chemistry (SAIAMC) University of the Western Cape University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Department of Thermodynamics and Heat Engines Institute for Energy Technology Kjeller

This paper reviews state-of-the-art developments in hydrogen energy systems which integrate fuel cells with metal hydride-based hydrogen storage. The 187 reference papers included in this review provide an overview of all major publications in the field, as well as recent work by several of the authors of the review. The review contains four parts. The first part gives an overview of the existing types of fuel cells and outlines the potential of using metal hydride stores as a source of hydrogen fuel. The second part of the review considers the suitability and optimisation of different metal hydrides based on their energy efficient thermal integration with fuel *** performances of metal hydrides are considered from the viewpoint of the reversible heat driven interaction of the metal hydrides with gaseous H;. Efficiencies of hydrogen and heat exchange in hydrogen stores to control H;charge/discharge flow rates are the focus of the third section of the review and are considered together with metal hydride – fuel cell system integration issues and the corresponding engineering solutions. Finally, the last section of the review describes specific hydrogen-fuelled systems presented in the available reference data.

关键词： Fuel cells Hydrogen storage Metal hydrides Thermal integration System development

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

Zingiber officinale extends Drosophila melanogaster life span in xenobiotic-induced oxidative stress conditions

引用

Frontiers in Biology 2018年第2期13卷 130-136页

作者： volodymyr Padalko Viktoriya Dzyuba Olena Kozlova Hanna Sheremet Olena Protsenko School of Medicine V.N. Karazin Kharkiv National University 4 Svobody Sq. Kharkiv 61022 Ukraine Department of Membrane Biophysics Research Institute of Biology V.N. Karazin Kharkiv National University 4 Svobody Sq. Kharkiv61022 Ukraine

BACKGROUND： The possibility of dietary ginger to enhance oxidative stress resistance and to extend life span was studied on Drosophila melanogaster. METHODS： Oxidative stress was induced by a reducing agent dithiothreitol. Experimental groups of male D. melanogaster were cultured on media containing： 1） no additive; 2） dithiothreitol, added into the nutritional mixture to the final concentration of 10 mM; 3） 25 mg of ginger powder g^-1 of the nutritional mixture; and 4） 10 mM ofdithiothreitol and 25 mg of ginger powder g l of the nutritional mixture. The number of alive fruit flies was inspected daily, and mean life span was determined for each experimental group. RESULTS： The addition of dithiothreitol to D. melanogaster nutritional mixture was established to result in an increase in concentration of two markers of oxidative stress conditions （thiobarbituric acid reactive substances as products of lipid peroxidation and carbonylated proteins as products of protein oxidation） in fly tissues. It was followed by significant reduction of mean life span and maximum life span of the last 10% of flies. Plant preparation, being added simultaneously with dithiothreitol, significantly diminished the negative effects of this xenobiotic. In conditions of additional stress load induced by hydrogen peroxide or high temperature, survival of insects treated with dithiothreitol on the background of ginger powder was the highest. CONCLUSIONS： Thus, the presented data give the evidence that ginger preparations can reduce oxidative stress outcomes and significantly increase the life expectancy of fruit flies in stress conditions.

关键词： ginger oxidative stress Drosophila melanogaster

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：