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Role of quantum dots nanoparticles in the chemical treatment of colored wastewater: Catalysts or additional pollutants

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Journal of Environmental Sciences 2011年第9期23卷 1479-1485页

作者： Hrvoje Kusic Danuta Leszczynska natalija koprivanac Igor Peterne Civil and Environmental Engineering Department Jackson State University Faculty of Chemical Engineering and Technology University of Zagreb

The objective of the study was to investigate the presence and the activity of quantum dots nanoparticles in colored *** special interest is devoted to the investigation of their role in the typical treatment of water or wastewater,studying their influence on the effectiveness of applied treatments *** standard chemical processes for water treatment and disinfection （direct UV photolysis and direct ozonation） were applied for the degradation of colored organic pollutant,reactive azo dye,in the presence/absence of CdSe/ZnS core-shells quantum *** obtained results indicated that investigated nanoparticles inhibit the overall efficiency of applied processes,especially in the case of direct UV photolysis,although catalytic effect might be expected in part due to the semiconductor nature of quantum *** results lead to a conclusion that CdSe/ZnS nanoparticles behave as additional pollutants in the *** should be removed from the system prior the treatment,because their presence could decrease the efficiency,i.e.,prolong the time of treatment and correspondingly increase the costs of the treatment process.

关键词： wastewater treatment CdSe/ZnS core-shells reactive azo dye UV irradiation ozone

How Social Networks Affect Society towards Financial Markets and Businesses

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How Social Networks Affect Society towards Financial Markets...

作者： natalija Kurmazovic 北京化工大学

学位级别：硕士

随着时代的发展,金融营销和商业体系经历了几个阶段。随着互联网与计算机的发明形成了社交网络的历史。计算机和互联网与它们在社交网络和世界商业公司中的表现息息相关。全球文化、经济、教育、卫生、体育、农业、技术、国际关系和通... 详细信息

随着时代的发展,金融营销和商业体系经历了几个阶段。随着互联网与计算机的发明形成了社交网络的历史。计算机和互联网与它们在社交网络和世界商业公司中的表现息息相关。全球文化、经济、教育、卫生、体育、农业、技术、国际关系和通信的增长都是通过社会网络实现的。这种独特而快速的通信方式与20世纪70年代ARPANET的发明直接相关。网络工程在1978年首次使用BBS发送电子邮件。WWW发展之后,引入了一种与世界沟通的恰当方法。1994年,以Geocites的名字开发了第一个具有独特风格的社交节目。21世纪引入了电子管理及其相关资源的创新。本研究的开展目的是收集发布内容的作者对社交网络及其相关资金来源的影响。将2019年和2020年社会网络金融业务政策的认识水平、内容编写者之间的社交网络利用、社交网络利用目标以及内容编写者财务绩效作为研究目标,通过随机抽样方法对120名内容编写者进行了问卷调查。阿里巴巴、Upwork、Facebook、You Tube、Whatsapp、Instagram、微信、Olx、Fiverr和亚马逊被选作社交网络的代表。发布内容的作者数量是由社交网络在线的最高人数记录的。百分百的内容编写者都在利用Youtube、Whatsapp、Facebook和Fiverr来促进他们写作业务的发展。互联网服务的缺乏、技能形式的意识和高税收服务是社交网络的选取和传播的主要制约因素。内容编写者在2019年面临的显著骗局,骗局率在2020年显示下降,它显示员工在2020年有显著的高增长率并且在2019-2020的区间为高增长比例。这些数据提高了社交网络商业的财政地位。

关键词：社交网络内容编写金融营销

Can the desiccation of forests in Tara National Park (Serbia) be attributed to the effects of a drought period?

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Journal of Forestry Research 2024年第6期35卷 220-229页

作者： GoranČešljar NevenaČule IlijaĐorđević Saša Eremija natalija Momirović Marko Tomić Filip Jovanović Institute of Forestry Kneza Višeslava 3Belgrade 11030Serbia Tara National Park Milenka Topalovića 3Bajina Bašta 31250Serbia

Forest ecosystems within national parks are threatened by various biotic and abiotic *** deter-mine the causes of the desiccation and death of trees in mixed coniferous and deciduous forests of Tara National Park(TNP),Serbia,we monitored defoliation and mortality of individual trees in permanent experimental *** on the desiccation of a large number of trees were gathered by determining the total volume of dry trees and areas of forests under drying *** two sets of data were combined to determine the impact of climatic events,primarily drought periods,on the desiccation of *** data from the International Co-operative Program on Assessment and Monitoring of Air Pollution Effects on Forests(ICP Forests)with TNP data helped relate forest desiccation to climate *** climate signals were identified by monitoring tree defoliation changes in two permanent experimental plots,and then assessed for their influence on tree desicca-tion in the entire national *** standardized precipita-tion evapotranspiration index(SPEI)was used for a more detailed analysis of the drought *** the lack of climate data for a certain period,the SPEI index revealed a link between climate variables and the defoliation and desic-cation of ***,the desiccation of trees was preceded by a long drought *** mixed conifer-ous-deciduous forests are often considered less vulnerable to natural influences,this study suggests that forest ecosystems can become vulnerable regardless of tree species composi-tion due to multi-year *** findings contribute to a better understanding of important clues for predicting pos-sible future desiccation of *** monitoring of the state of forests and of more permanent experimental plots in national parks could provide better quality data and timely responses to stressful situations.

关键词： Forest ecosystems Extreme climate events Drought Defoliation Monitoring

Spatial assessment of the areas sensitive to degradation in the rural area of the municipality (C)ukarica

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International Soil and Water Conservation Research 2019年第1期7卷 71-80页

作者： natalija Momirovi(c) Ratko Kadovi(c) Veljko Perovi(c) Milo(s)Marjanovi(c) Aleksandar Baumgertel Institute of Forestry Kneza Vi(s)eslava 311030 BelgradeSerbia Faculty of Forestry University of BelgradeKneza Vi(s)eslava 111030 BelgradeSerbia Institute for Biological Research'Sini(s)a Stankovi(c)' University of BelgradeBulevar despota Stefana 14211060 BelgradeSerbia Faculty of Mining and Geology University of BelgradeDu(s)ina 711000 BelgradeSerbia

In this paper,the assessment of the sensitivity of the soil in the rural area of (C)ukarica municipality to the processes of degradation is *** areas,especially in the vicinity of large cities,are exposed to numerous processes of degradation:soil erosion,urban and industrial zone expansion at the expense of fertile agricultural soils,activation of landslides and a number of other significant ecological *** on the characteristics of the research area,the MEDALUS (Mediterranean Desertification and Land Use) model was applied,and for the assessment of sensitivity to the processes of degradation the main quality indicators were considered:soil,climate,vegetation and *** each of the analyzed quality indicators,parameter groups were *** parameter is quantified according to the defined method by giving them a sensitivity coefficient between 1.0 and *** 10.0 has been applied to analyze and prepare layers of quality ***,the geometric mean for all four quality indicators was used to generate the map of environmental sensitivity to *** results obtained show that 41.54% of the study area is classified as critical;22.34% of the surface as fragile;8.47% of the areas are potentially endangered and 9.58% not threatened to degradation *** results have also shown that MEDALUS model is a functional tool for simulations which support sustainable land management in the areas prone to degradation.

关键词： MEDALUS Land degradation Landslides Human pressures GIS mapping

Intelligent Transportation System and Night Delivery Schemes for City Logistics

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Computer Technology and Application 2011年第10期2卷 782-787页

作者： Ivana Cavar Zvonko Kavran natalija Jolic Faculty of Transport and Traffic Sciences University of Zagreb Vukeliceva 4 Zagreb HR-10000 Croatia

Intelligent Transportation System （ITS） integrates information and communication technologies with location based technologies into roads, vehicles, traffic and transport management systems. Application of ITS can improve situation in major cities where due to the increasing number of residents and level of motorization traffic congestion represents important issue. Another problem arises from this facts and that is that cities have contradictory needs as grooving need for goods within urban areas as well as need for less vehicles in the same area. The urban logistics activities by private companies within urban areas represent an integral part of city logistics that aims to improve the efficiency of urban freight transportation, reduce traffic congestion, mitigate environmental impacts, reduce costs and fuel consumption. This research presents application of ITS technologies and vehicle routing problem for night delivery scheme planning as one of the core techniques for modelling city logistics.

关键词： ITS (intelligent transportation system) city logistics night delivery scheme traffic system development.

Status and the Future of Organic Farming in the Republic of Macedonia and the Mediterranean Countries

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Chinese Business Review 2015年第5期14卷 238-245页

作者： Ljupcho Mihajlov Vasko Zlatkovski natalija Markova Ruzdik Goce Delchev University Shtip Republic of Macedonia

In order to create or design a development, it is necessary to have a look backwards. To identify and understand the resources based on the possessed knowledge, steps for development are proposed. But, no less important is to understand the surrounding, what others are doing/planning, as it will save precious time in inventing something which is maybe already implemented elsewhere. Based on that assumption, this paper deals with the analysis of the current status of the organic farming （O.F.） in Macedonia and the Mediterranean countries, as they are closest to the soil and climate conditions that exist in Macedonia as well. This paper will try to give answer to the question ＂how to maintain the present level of development and to set parameters which should be used in order to reach further development＂. The analysis process was implemented by using SWOT （strength, weakness, opportunity, and threats） analysis for Macedonia and the Mediterranean countries. The analysis result indicates that there are numerous common factors, resources, structures, and gaps in the organic sector. This paper＇s goal is to present a list of strategic goals and instruments for development of O.F. in Macedonia and Mediterranean countries. The data related to the facts and visions are referred to the Republic of Macedonia, but relevant data on EU countries, candidate-countries, and south Mediterranean countries are presented as well. The conclusions are with special accent to the new possibilities for development of O.F. in the near future, especially through applicative scientific research activities.

关键词： organic farming (O.F.) analysis development data visions improvement efficiency

Calibration of a Microscopic Model of an Urban Traffic Network

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Computer Technology and Application 2013年第5期4卷 254-258页

作者： Ivana C~var4 Zvonko Kavran natalija Jolic Faculty of Transport and Traffic Sciences University of Zagreb Zagreb HR-10000 Croatia

Traffic simulation models have the potential to provide an objective, cost-effective and flexible approach to assessing system design, traffic operations and management strategies. In that regard, the calibration and validation of simulation model is crucial for appropriate decision making process. This paper presents an application of microscopic simulation model calibration and validation procedure for a multimodal urban traffic network. Model is developed by VISSIM and VISSIG software tools.

关键词： Microscopic simulations multimodal urban traffic traffic planning and modeling urban transport.

Biogenic Amines Profile of Serbian Traditional Sausage in Relation to Raw Material and Production Conditions

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Journal of Agricultural Science and Technology(B) 2016年第1期6卷 48-56页

作者： Tatjana Tasic Predrag Ikonic Ljiljana Petrovic Anamarija Mandic Snezana Skaljac Marija Jokanovic Vladimir Tomovic Branislav Sojic Maja Ivic natalija Dzinic Institute for Food Technology UniversiO of Novi Sad Bulevar Cara Lazara 1 Novi Sad 21000 Serbia Faculty of Technology University of Novi Sad Bulevar Cara Lazara 1 Novi Sad 21000 Serbia

Petrovska klobasa is a traditional dry fermented sausage produced in the Autonomous Province of Vojvodina. Formation of nine hiogenic amines was determined in three sausage groups produced from hot deboned （A1） and cold meat （B1, B3） during drying and ripening in traditional room （A1, B1） and in industrial ripening chamber （B3）. Dansyl chloride derived amines were analysed by high-performance liquid chromatography with diode-array detector （HPLC-DAD） on Eclipse XDB-C18 column. Histamine, the most important amine from food safety point of view, was not found in any of the analyzed samples. Serotonin and spermidine were also not detected in any samples, while spermin was determined in all analyzed samples. At the end of drying, phenylethylamine was the predominant amine in A1 sausage group （51.6 mg/kg）, and tryptamine in B1 （38.1 mg/kg） and B3 （28.7 mg/kg） sausage groups. At the end of ripening, tryptamine was the predominant biogenic amine in all sausage groups （133, 121 and 39.8 mg/kg in A1, B1 and B3 groups, respectively）. Total level of biogenic amines in all investigated sausages did not exceed 174 mg/kg at the end of drying and 238 mg/kg at the end of ripening period. Tryptamine and cadaverine may be used as indicators of total biogenic amines for sausages produced in traditional and indusrial conditions from hot deboned and cold meat.

关键词： Biogenic amines traditional dry fermented sausage Petrovska klobasa raw material production conditions.

Can the desiccation of forests in Tara National Park(Serbia) be attributed to the effects of a drought period?

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