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Our experience with smartphone and spherical lens for the eye fundus examination during humanitarian project in Africa

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International Journal of Ophthalmology(English edition) 2017年第1期10卷 157-160页

作者： alena Furdova Adriana Furdova Vladimtr Krcmery Department of Ophthalmology Faculty of MedicineComenius University in BratislavaBratislava 821 01Slovak Republic Tropic Team St.Elisabeth University of Health and Social SciencesBratislava 811 01Slovak Republic

To present the experience of eye fundus photo documentation by using the plus 20 diopters spherical Volk lens and a smartphone with 4.2 Mpix camera and LED flash within the screening project of eye disorders in countries where the standard ophthalmology equipment is not available. Totally 241 patients underwent ophthalmology screening examination. The documentation of the eye fundus included patients with Burkitt lymphoma, Kala Azar, malnutrition with unknown etiology, tuberculosis, HIV positive patients, Usher syndrome and hypertension. This technique as an alternative way of screening will become a standard within examination of patients with eye disorders in outfield regions of developing countries.

关键词： eye fundus examination smartphone Volk lens

Research on the Compensation Management of Starbucks Coffee Company in Russia

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Research on the Compensation Management of Starbucks Coffee ...

作者： EVSEEVA alena 东北大学

学位级别：硕士

人力资源管理是管理科学的一个分支,其目的是使公司能够履行分配给公司的劳动职能和最佳利用高素质员工。薪酬管理是人力资源管理的核心内容之一,它支持实现业务目标,从战略意义上讲,它解决了有关如何对员工的期望值进行评估的长期问题...

人力资源管理是管理科学的一个分支,其目的是使公司能够履行分配给公司的劳动职能和最佳利用高素质员工。薪酬管理是人力资源管理的核心内容之一,它支持实现业务目标,从战略意义上讲,它解决了有关如何对员工的期望值进行评估的长期问题。它涉及战略和政策的制定和实施,这些战略和政策旨在根据人们对组织的价值公平地补偿人们。顾名思义,薪酬管理意味着存在一种薪酬结构,在这种结构中,表现出色的员工的薪酬高于员工平均薪酬。这将鼓励优秀员工更加努力地工作,并有助于在组织中营造竞争氛围。劳动力流动问题是许多组织固有的问题,劳动力流动对企业形象有着重要的影响,也影响着企业的利润,在这方面,员工的薪酬满意度问题仍然是相关的。在餐饮服务行业,人是主要的劳动力。员工应始终保持工作动力,同时公司应为员工提供薪酬方案,防止员工流失,从而提高劳动效率。从世界上所有的薪酬管理激励机制模型来看,最具特色的日美模式是有可能的。日本通过以下三个原则取得了显著的经济成就:终身雇佣员工,其目的是使员工在本企业中尽可能长时间工作,获得多年服务报酬、奖励、培训和各种社会福利。也就是说,这一原则的优势是稳定就业,有利于员工和整个国家。轮岗制度的实质是每2-3年水平和垂直地调动一次工人,该系统为员工提供高质量的活动,因为向新工作场所的过渡必须具有良好的声誉并且在以前的工作场所获得培训制度。美国的激励制度是以鼓励每一位员工的创业精神和个人主义为导向的,其基本原则是:经济激励取决于员工的职业精神和他们所掌握的职业数量,从而支持高水平的流动性。按类别对管理者进行明确区分;有针对性的管理;鼓励需要增加利润的创新想法的系统;一个“两条职业道路”的系统:行政和就业增长,或工资率逐步提高到管理者的水平。由于激励制度不仅取决于员工的调动,而且取决于组织的整体业绩,因此,在组织中建立有效的薪酬管理仍然是一个相关问题。不幸的是,俄罗斯目前还没有广泛采用有效的人事管理方法,这是俄罗斯劳动力市场水平低、失业率高的原因之一。文献研究表明,最常见的因素是:缺乏透明的薪酬和福利体系、缺乏发展员工个人和职业素质的机会、低工资、缺乏来自管理、雇主和雇员在长期合作中缺乏利益。在俄罗斯,有些公司使用外国的劳动激励做法,但并不总是有效的,因为任何激励制度都必须适应特定企业组织的特殊性和俄罗斯市场条件的特殊性。因此,利用国外经验,有必要建立一个适合俄罗斯国情的有效激励机制。在俄罗斯联邦,根据市场调查,咖啡产业市场处于动态发展阶段。尽管俄罗斯的咖啡被视为独家进口商品,在俄罗斯种植几乎不可能,但俄罗斯的咖啡市场已经进入了渐进式发展的道路。争夺市场份额和追求最高品质的竞争同样是俄罗斯咖啡市场的关键。到目前为止市场由74%的可溶咖啡和26%的谷物咖啡组成,主要由酒店和市场上的食品部门消费。自2012年以来,俄罗斯开始呈现出近年来世界咖啡市场上出现的一种趋势一办公室与咖啡店的合并。小企业家、初创企业、自由职业者,咖啡店已经成为一个有机会安静工作、快速谈判以及吃或喝一杯咖啡的地方。据统计,在俄罗斯开设了80多家咖啡和糖果网络,其中大部分是特许经营。在俄罗斯经营的咖啡连锁店是1340家。俄罗斯共有5212家咖啡店,莫斯科673家,圣彼得堡476家。第一家现代化的“咖啡厅”于1994年在圣彼得堡开业。据专家称,咖啡店的增长与快餐行业相当,占整个俄罗斯网络的21.8%。在咖啡馆中,糖果店是最常见的巧克力餐厅、咖啡馆和星巴克。俄罗斯的咖啡市场以其网络焦点而著称。在欧洲,2/3的咖啡馆是私人的,那么在俄罗斯,个体咖啡馆很少,而且更多的连锁店在特许经营下运营。连锁咖啡店利润更高,因为成本降低了20%,贸易额也更高。在俄罗斯,咖啡的普及率每年都在持续增长。咖啡市场发展迅速,呈现出积极的动态。咖啡是日常用品市场上最稳定的产品之一。尽管部分咖啡馆在公共餐饮市场占有相当小的份额(根据俄罗斯地区的NPD公司的数据,它占整个市场的1.5-2%,在所有人口超过1%的城市中),但它是有希望的,在过去的三年里,企业的数量一直在稳步增长。最近,由于有了使用特许经营权的可能性,世界各地的咖啡馆都有了强劲的增长。在不同的国家开设咖啡销售点可以提高这种饮料的销量,并吸引更多的咖啡迷。在咖啡销售方面最成功的网络公司是星巴克、McCafe、Tim Hortons、Costa Coffee等,但全球超过28000家咖啡店使星巴克仍然是世界上第一家咖啡和面包店。因此,本文选择星巴克公司作为本研究的对象。本论文的目的是确定改变咖啡店员工现有薪酬管理方法的必要性。本文采用访谈和问卷调查等工具对咖啡店员工进行调研,从而找出公司薪酬方案存在的不足,并提出了实施关键绩效指标体系消除缺陷的方法。为了分析星巴克咖啡公司的薪酬管理体系,本文采用了一种工作分析方法。传统上,工作分析以许多不同的方式进行,因

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Stomatocysts of Chrysophytes in Lake Shira

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 68-69页

作者： alena FIRSOVA Limnological Institute Siberian Branch Russian Academy of Sciences

The chrysophytes are distributed over all the *** a rule,these are planktonic,freshwater,cold-water *** are as well saltish-water chrysophytes species of genera Chrysococcus,Dinobryon,

关键词： Lake Shira chrysophycean stomatocysts phytoplankton sediments.

Effects of Organic Matter-Rich Amendments on Selenium Mobility in Soils

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Pedosphere 2019年第6期29卷 740-751页

作者： Petra SMAZíková Luká? PRAUS Jirina SZáková Jana TREMLOVá Ale? HANC Pavel TLUSTOS Department of Agro-Environmental Chemistry and Plant Nutrition Faculty of Agrobiology Food and Natural Resources Czech University of Life Sciences Prague

Soil organic matter (SOM) plays an important role in the Se dynamics in soil. The potential effects of vermicompost and digestate as important sources of SOM on selenium (Se) mobility were assessed in this study. Three soils differing in their physicochemical parameters, fluvisol, chernozem, and luvisol, were chosen, and three types of vermicomposts based on various bio-waste materials as digestate (vermicompost 1), kitchen waste with woodchips (vermicompost 2), and garden bio-waste (vermicompost 3) were used due to their high organic matter content. Additionally, digestate samples alone were applied. To evaluate the potential effect of vermicompost application on sorption characteristics of soils, batch sorption experiments were performed. The results showed a predominant effect on Se species in the soils, where selenite sorbed more intensively compared to selenate, regardless of the soil and ameliorative material applied. In the control, the soil sorption ability of selenite tended to decrease in the order: fluvisol > luvisol > chernozem. However, these differences were not significant. Moreover, the effects of the ameliorative materials depended on both soil and amendment used. In fluvisol, all the amendment applications resulted in a decrease in distribution coefficient ( K d values) of Se, whereas in chernozem, this effect was observed only for the digestate-based vermicompost 1. Increasing K d levels were reported in luvisol treated with digestate;the application of garden bio-waste-based vermicompost 3 tended to decrease the K d values. Further studies are required on long-term effects of these amendments on Se mobility in soils and the role of individual organic matter fractions in this context.

关键词： Batch sorption experiments Bio-waste material Selenite Selenate Sorption isotherms Vermicompost

Cytokine interplay among the diseased retina, inflammatory cells and mesenchymal stem cells-a clue to stem cell-based therapy

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World Journal of Stem Cells 2019年第11期11卷 957-967页

作者： Vladimir Holan Barbora Hermankova Magdalena Krulova alena Zajicova Department of Transplantation Immunology Institute of Experimental Medicine of the Czech Academy of SciencesPrague 14220Czech Republic Department of Cell Biology Faculty of ScienceCharles UniversityPrague 12843Czech Republic

Retinal degenerative disorders,such as diabetic retinopathy,retinitis pigmentosa,age-related macular degeneration or glaucoma,represent the most common causes of loss of vision and *** spite of intensive research,treatment options to prevent,stop or cure these diseases are *** therapeutic approaches are offered by stem cell-based *** date,various types of stem cells have been evaluated in a range of *** them,mesenchymal stem/stromal cells(MSCs)derived from bone marrow or adipose tissue and used as autologous cells have been proposed to have the potential to attenuate the negative manifestations of retinal *** delivered to the vicinity of the diseased retina can exert local anti-inflammatory and repairpromoting/regenerative effects on retinal ***,MSCs also produce numerous factors that could have negative impacts on retinal *** secretory activity of MSCs is strongly influenced by the cytokine ***,the interactions among the molecules produced by the diseased retina,cytokines secreted by inflammatory cells and factors produced by MSCs will decide the development and propagation of retinal *** we discuss the interactions among cytokines and other factors in the environment of the diseased retina treated by MSCs,and we present results supporting immunoregulatory and trophic roles of molecules secreted in the vicinity of the retina during MSC-based therapy.

关键词： Retina Degenerative diseases Stem cell therapy Mesenchymal stem cells Cytokines Growth factors

Relation between basin morphometric features and dynamic characteristics of debris flows——a case study in Siberia, Russia

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Journal of Mountain Science 2018年第3期15卷 618-630页

作者： Artem A.RYBCHENKO alena V.KADETOVA Elena A.KOZIREVA Institute of the Earth's Crust Siberian Branch of Russian Academy of Sciences

Extreme and prolonged rainfall in the Tunka Ridge caused several debris flows in the vicinity of the Arshan village(Siberia, Russia) on June 28, 2014. These debris flows, in spite of similar geological conditions, had different velocity, peak discharge and alluvial fan volume values. The flow velocity was from 3.5 m/s to 19.6 m/s, the peak discharge ranged from 63 m3/s to 13566 m3/s, and the alluvial fan volume varied from 4.13×103 to 8.45×105 m3. Such a great range of values is due to the morphometric parameters of the debris flow basins. The article deals with the influence of morphometric parameters of debris flow basins, such as the basin area, the average slope, Melton ratio, relief ratio on the debris flow velocity, peak discharge and volume of alluvial fans. In this debris flow event the average values of slope angle and total basin relief of the debris flow basins did not affect the values of debris flow velocity, peak discharge and alluvial fan volume. The highest correlations were observed with the debris flow basin area that was connected with the water inflow volume into the debris flow basins during the rainfall. The unequal water distribution among debris flow basins also had an impact on the debris flow velocity, peak discharge and volume of alluvial fans.

关键词： Central Asia Debris flow Morphometric analysis Natural Hazards Tunka Ridge

Evaluation of the expression of sperm proteins in normozoospermic and asthenozoospermic men using monoclonal antibodies

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Asian Journal of Andrology 2016年第1期18卷 108-113页

作者： Jana Capkova alena Kubatova Lukas Ded Olina Tepla Jana Peknicova Laboratory of Reproductive Biology Institute of Biotechnology Academy of Sciences of the Czech Republic v. v. i. Prague Czech Republic Clinic Center IVF ISCARE Prague Czech Republic

Recent studies have shown that infertility affects estimated 15% of all couples. Male infertility is the primary or contributory cause in 60% of these cases. Consequently, the application of assisted reproduction is increasing. These methods could benefit from an extended evaluation of sperm quality. For this reason, we analyzed sperm proteins from 30 men with normal spermiograms and 30 men with asthenozoospermia. Ejaculates of both groups were tested by flow cytometry （FCM） and fluorescence with a set of well-characterized anti-human sperm Hs-monoclonal antibodies （MoAbs）, which were generated in our laboratory. No statistically significant differences were found between normospermics and asthenospermics in the expression of the sperm surface protein clusterin, evaluated with Hs-3 MoAb, and semenogelin, evaluated with Hs-9 MoAb. However, FCM revealed quantitative differences in the acrosomal proteins between normozoospermic and asthenozoospermic men, namely, in glyceraldehyde-3-phosphate dehydrogenase, evaluated with Hs-8 MoAb, valosin-containing protein, evaluated with Hs-14 MoAb, and ATP synthase （cAMP-dependent protein kinase II, PRKAR2A）, evaluated with MoAb Hs-36. Asthenozoospermic men displayed a highly reduced expression of intra-acrosomal proteins, with a likely decrease in sperm quality, and thus a negative impact on successful reproduction. Asthenozoospermia seems to be a complex disorder involving intra-acrosomal proteins.

关键词： asthenozoospermia flow cytometry fluorescence microscopy monoclonal antibodies sperm proteins

Preparation and Compaction Behaviour of Poly(methyl methacrylate) Coated Iron Microparticles

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Journal of Materials Science & Technology 2010年第5期26卷 454-460页

作者： Daniela Kladeková Renáta Orináková Annamária Krajníková Miriam Kupková Margita Kabátová Kveta Markuová Institute of Chemistry Faculty of ScienceP.J.afárik University in Koice Institute of Materials Research of the Slovak Academy of Sciences in Koice

The poly（methyl methacrylate）（PMMA） coatings onto surface of iron particles were electrochemically prepared and the effect on both surface structure and internal structure of the resulted material after compaction was carried *** electrochemical polymerization treatment was performed in a fluidized bed electrolyzer using sulphuric acid solution containing potassium persulphate and methyl methacrylate（MMA）.The surface topography and the microstructure of the samples were observed by scanning electron microscopy（SEM） and optical microscopy（OM）.It was found that the PMMA layer coated onto iron particles results in improvement of their compressibility compared with uncoated powders,and classical lubricants are not necessary for compacting particles coated.

关键词： Cathodic electropolymerization Poly(methyl methacrylate) coating Surface appearance Microstructure Compaction process

Electronic structure of the SrAl_2O_4:Eu^(2+) persistent luminescence material

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Journal of Rare Earths 2009年第4期27卷 550-554页

作者： Jorma Hls Taneli Laamanen Mika Lastusaari Janne Niittykoski Pavel novák Department of Chemistry University of Turku FI-20014 Turku Finland Turku University Centre for Materials and Surface (MatSurf) Turku Finland Graduate School of Materials Research (GSMR) Turku Finland Institute of Physics Academy of Sciences of the Czech Republic CZ-16253 Prague 6 Czech Republic

The electronic structure of the strontium aluminate （SrAl2O4：Eu^2＋） materials was studied with a combined experimental and theo- retical approach. The UV-VUV synchrotron radiation was applied in the experimental study while the electronic structure of the non-optimized and optimized crystal structure were investigated theoretically by using the density functional theory. The structure of the valence and conduction bands as well as the band gap energy of the material together with the position of the Eu2＋ 4f7 85712 ground state were calculated. The calculated band gap energy （6.4 eV） agreed well with the experimental value of 6.6 eV. The valence band consisted mainly of oxygen states whereas the bottom of the conduction band of strontium states. In agreement with the experimental results, the calculated 4f7 8S7r2 ground state of Eu2＋ lies in the energy gap of the host. The position of the 4f7 ground state depended on the Coulomb repulsion strength. The position of the 4f7 ground state with respect to the valence and conduction bands was discussed using theoretical and experimental evidence available.

关键词： strontium aluminate persistent luminescence electronic structure DFT calculation rare earths