خيارات البحث
النتائج 51 - 60 من 96
The effects of LED lighting on nitrates, nitrites and organic acids in tatsoi
2018
Simanavicius, L., Lithuanian Research Centre for Agriculture and Forestry;Akademija, Kedainiai distr. (Lithuania);, Akademija, Kedainiai distr. (Lithuania);Aleksandras Stulginskis Univ., Akademija, Kauno reg. (Lithuania) | Virsile, A., Lithuanian Research Centre for Agriculture and Forestry
Progressive type of controlled environment horticulture, such as plant factories, enables the precise control of cultivation environment parameters. The experiments were performed at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in the year of 2017. The aim of this study was to evaluate the effects of different irradiance levels produced by solid state light-emitting diodes (LEDs) on nitrates, nitrites and organic acids contents in tatsoi (Brassica rapa var. rosularis), cultivated in the controlled environment chambers. Plants were cultivated under combinations of red (640, 660 nm), blue (445 nm) and far red (731nm) LEDs at photosynthetic photon flux density (PPFD) level of 200 µmol mE-2 sE-1. At the pre-harvest stage, PPFD was increased to 300 µmol mE-2 sE-1 by elevating the fluxes of different spectral components for 3 days. The contents of nitrates, nitrites and organic acids were evaluated. The results propose the metabolic interface between nitrates, nitrites and organic acids in green vegetables, sensitive for lighting conditions. The higher intensity of LED light at pre-harvest stage led to decreased contents of nitrates in tatsoi. The increased intensity of blue 455 nm light led to lower contents of nitrates and higher of organic acids in comparison to red 640 nm. In addition, the increased intensity of red 640 nm led to significantly higher (p≤0.05) contents of nitrites. The target management of LED light spectra and intensity at pre-harvest stage could be used to reduced nitrates and increased organic acids in tatsoi.
اظهر المزيد [+] اقل [-]The rumen bacterial community of reindeer in different age periods from Russian Arctic regions
2018
Ilina, L., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Filippova, V., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Dubrovin, A., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Yildirim, E., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Dunyashev, T., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Laptev, G., Biotrof, Ltd., Saint Petersburg (Russian Federation) | Laishev, K., North-West Centre for Interdisciplinary Research on Food Security Problems, Saint Petersburg (Russian Federation)
Rangifer tarandus (reindeer) – is actively bred in the northern regions of different countries. Therefore, an urgent task is to deepen information about the features of reindeer adaptations. Rumen symbiotic microorganisms play an important role in the life of Rangifer tarandus, allowing animals to efficiently use scarce nutrient resources of the tundra and forest-tundra. The microbial community of the reindeer rumen, as well as its age-related changes, are the least studied compared to other ruminants. The comparative analysis results of rumen bacterial community composition of calf (4 months), young animals (1–2 years) and adults (3–6 years) Rangifer tarandus of the Russian Arctic are presented for the first time. The reindeer ruminal bacterial community composition was analyzed in the laboratory of the ‘BIOTROF+’ Ltd by T-RFLP method. In the ontogenesis, significant changes in the microorganism representation were noticed, the greatest of which was noted in microorganism involved in carbohydrate fermentation. The content of cellulolytic Clostridia and the acid-utilizing species of the Negativicutes (P is less than 0.05) decreased with age, but bacteria with the amylo- and cellulosolytic properties of the phylum Bacteroidetes increased (P is less than 0.05). A wide range of microorganisms which traditionally belong to the pathogens of various animals and humans diseases was revealed. With age, a tendency to increase the number of pathogens, including the bacteria of the families Campylobacteraceae, Burkholderiaceae, phylum Fusobacteria, and the genus Staphylococcus was noticed. The greatest percent of opportunistic microorganisms, including phylum Actinobacteria and the family Enterobacteriaceae, were detected in young animals.
اظهر المزيد [+] اقل [-]Innovating apart or together: Lithuanian farmers and rural communities
2018
Vilke, R., Lithuanian Inst. of Agrarian Economics, Vilnius (Lithuania) | Vidickiene, D., Lithuanian Inst. of Agrarian Economics, Vilnius (Lithuania) | Gedminaite-Raudone, Z., Lithuanian Inst. of Agrarian Economics, Vilnius (Lithuania)
The changing economic and social situation in the regions leads to the changing understanding of the potential which exists in the countryside. This research is based on the idea that farmers operate in close neighbourhood with the local communities and therefore they may hold a potential to start innovation processes in rural regions as agents of change. This may happen individually or together with the local community. Farmers are active in acquiring new knowledge and experience through collaboration with advanced innovation centres in research laboratories and universities, and sharing with the local community, thus making these innovations open. The success of innovators comes in line with the collaboration and therefore the defined three key factors of ‘innovating together’ in this research are: first, the shift from technical to organizational innovations; second, the shift from sectorial to territorial rural development strategies; third, the size of farms and rural enterprises due to the limited number of employees. Theoretical findings are followed by empirical investigations from representative data collected in Lithuanian farms in 2017, supported with relevant statistical analysis. Research results show that the potential for ‘innovating together’ in Lithuanian farms is rather weak when taking into account all three factors. However, there are reasons behind this which give insights for future developments in the field.
اظهر المزيد [+] اقل [-]Smart specialisation development in Latvia
2018
Gemma, S., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Vitolina, Z., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia)
Based on data on the number of newly established enterprises and the total number of enterprises, the authors analysed whether and what changes occurred in the industries of the national economy that have high transfer potential in relation to smart specialisation implementation in the country, broken down by region, thereby identifying the RIS3 specialisation field on which the focus has to be placed and to which attention has to be drawn. The aim of the research is to identify the entrepreneurship development in RIS3 specialisation fields broken down by region and economic development according to the RIS3 specialisation fields. The research has found that the number of enterprises in the industries having high transfer potential in relation to RIS3 as a percentage of the total number of enterprises was slightly above 50%; the regional breakdown of the enterprises revealed that two thirds were located in the regions of Riga and Pieriga, and that ICT was the most significant RIS3 specialisation. In the post-crisis period, the number of newly established enterprises increased at the highest rate in 2011, exceeding the rate of the previous year more than two-fold, whereas in the next two years the rate decreased below the 2009 level.
اظهر المزيد [+] اقل [-]Prospect possibilities of remote work for involvement of Latvian Diaspora’s in economy and businesses of Latvia
2018
Lescevica, M., Vidzeme Univ. of Applied Sciences, Valmiera (Latvia) | Kreituze, I., Vidzeme Univ. of Applied Sciences, Valmiera (Latvia)
During the last decade a huge number of Latvian citizens have left the country and live abroad, which complicates to a certain extent the chance of easily returning and settling down in Latvia. At the same time, the Latvian entrepreneurs are ultimately demonstrating their desperate need for all kind of workers. Especially it could be seen in sectors like medicine, retail, heavy and light industry. Rapidly growing Diaspora allows to acknowledge that there is a big potential of labour force flowing away from the country, sometimes staying without any work positions for quite a long time. The aim of this article is to find evidence that Latvian Diaspora could be involved in the Latvian economy and business by using a new attitude and approach, which should be supported by teleworking. During research the main methods used were content analysis of strategic and planning documents as well as analysis of the best practices in the world and Latvia, with the aim of establishing a model of remote work development and finding out proposals for a better participation of employees, employers and territory representatives – local governments and state institutions. This article is a part of and supported by the State Research Project EKOSOC-LV, part 5.2.2. The authors express their gratitude to the Institute of Social, Economic and Humanities research of Vidzeme University of Applied Sciences.
اظهر المزيد [+] اقل [-]Opportunities for Latvian export of medical services
2018
Grizane, T., Turiba Univ., Riga (Latvia) | Jurgelane, I., Riga Technical Univ. (Latvia) | Jankova, L., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia) | Sannikova, A., University of Economics and Culture, Riga (Latvia)
Historical and current development tendencies of medical tourism in Latvia, economic and geographical accessibility of Latvia for medical tourists, the high acknowledgement by the European Parliament Committee on Transport and Tourism on the potential of Latvia of becoming one of the largest medical tourism destination points, allow us to evaluate the potential for medical tourism among the priority countries for Latvia. Unfortunately, the lack of further analysis of potential limits the development of medical tourism strategy and monitoring. The research goal: determination of export potential of medical tourism services in the priority countries for Latvia. The research showed that there is a potential in every of the given countries: in Norway – rehabilitation and insert of acrylic implants; in Sweden – endovenous laser surgery and eyelid surgery; in Finland – rehabilitation and breast enlargement; in Ireland – rehabilitation and eyelid surgery; in Great Britain – rehabilitation and eyelid surgery. Results of the SWOT analysis indicated that in order to reach the export goals the existing drawbacks to the provision of medical tourism services in Latvia have to be averted while amplifying the use of the comparative advantages of Latvia.
اظهر المزيد [+] اقل [-]The model of automation and extension of tourism economic impact assessment in specific regions
2018
Berzina, I., Vidzeme Univ. of Applied Sciences, Valmiera (Latvia) | Lauberte, I., Vidzeme Univ. of Applied Sciences, Valmiera (Latvia)
The model of automation and extension of tourism economic impact assessment in specific regions Tourism is measured by the statistics of visitor movements, expenditure and estimates of the number of visitor facilities. In the world there are many current tools, methodologies and innovative technologies used to measure the economic impact of tourism. Tourism statistics have been on the frontline of Big Data-related innovations of statistical sources and methods. Data from mobile phones (as part of Big Data set) are increasingly used as new indices for social science research. Therefore, this paper looks for an answer to the question – what is the specific of a theoretical model for automation tourism economic impact assessment in specific regions via the use of ICT and mobile positioning data (MPD)? Using qualitative research methods authors propose theoretical model based on two interlinked parts. First of which – ‘Data storage’ – can be built upon the most popular BD platform ‘Apache Hadoop Ecosystem’, where the data precision of the online surveys can be increased by implementing mobile positioning solutions. Meanwhile the other part – ‘Data analysis’ – can be based on the locally created assessment methodology, which has been derived from the Finnish standardized economic impact estimation approach. The research results show the findings and propose a theoretical model. Its strength and novelty lies in the ability to use traditional tourism statistics, the economic impact analysis and passive mobile positioning data for spatial characteristics of tourism flow. Its construction is a distinctive combination of typically used technological approaches.
اظهر المزيد [+] اقل [-]Support to the Latvian fishery sector through the EU financial instruments
2018
Biuksane, I., Latvia Univ. of Life Sciences and Technologies, Priekuli, Priekuli parish, Priekuli Municipality (Latvia). Inst. of Agricultural Resources and Economics
Latvia, just like many other EU member states, receives multiannual financial support through the EU financial instruments for implementation of the common policies by the EU. The support is aimed at the priorities set at the level of the EU and is adapted to the peculiarities of each member state’s sphere. The aim of the study is to evaluate the importance of the support, provided by the EU financial instruments, for the development of Latvian fishery sector. The analysis was made on the basis of the available data and their quality. As a result of the study, the author found out that in the planning periods of 2004 – 2006, 2007 – 2013 and 2014 – 2020, for the development of fishery sector in Latvia the support of several EU financial instruments was available. Development of fishery sector is significantly impacted by the availability of the financial support through the EU financial instruments and use thereof. Considering the dependence of the fishery sector on the sustainability principles coordinated at the level of EU, corresponding fishery possibilities, and considering the increase of global competitiveness in the world’s markets, the strengthening of fishery’s competitiveness plays a significant role in the facilitation of the Latvian economy.
اظهر المزيد [+] اقل [-]Vertical price transmission along the potato supply chain in Lithuania
2018
Jurkenaite, N., Lithuanian Inst. of Agrarian Economics, Vilnius (Lithuania) | Paparas, D., Harper Adams Univ., Newport, Shropshire County (United Kingdom)
Potato sector is one of the competitive areas of the European Union (EU) agriculture. Although Eurostat declared that in 2015 Lithuanian share in the EU-28 harvested production was modest and composed only 0.7%, according to Food and Agriculture Organization of the United Nations (FAOSTAT), this crop remained on the list of top 10 commodities by net production value in Lithuanian agriculture. However, over the past decades the Lithuanian potato sector survived undesired transformations. The aim of this paper is to analyse the changes of the main indicators, related to the potato sector, and vertical price transmission among the chain of potatoes in Lithuania. The conducted research indicates the most important development trends of the potato sector and applies econometric techniques to investigate if there is any long-run relationship between the farm and retail prices of potatoes for the period of 2010 to 2016. Although the statistics show the shrinking production and domestic consumption of potatoes in Lithuania, the analysis of the vertical price transmission does not provide evidence of market inefficiencies. The Johansen cointegration test confirms the existence of a long-run relationship between the farm and retail prices, while the Granger causality test shows that there is a bidirectional causality between the examined series. The M-TAR model does not provide evidence of the farm and retail price asymmetry in the long run.
اظهر المزيد [+] اقل [-]Assessment of Lithuanian rural homesteads’ websites quality
2018
Grigaliunaite, V., Vytautas Magnus Univ., Kaunas (Lithuania) | Pileliene, L., Vytautas Magnus Univ., Kaunas (Lithuania)
Considering tourism as a driving force in the growth of rural economy, the research in this industry is gaining its popularity. In the era of the Internet, no business is imaginable without having its own website. However, implementing a website does not already mean that customers will like and approve it. Website quality is a necessary task to maintain in line with its functioning. The aim of the research is to assess the quality of the Lithuanian rural tourism homestead websites. Only understanding the website-related factors that are important for consumers may lead to a proper management of a website and customer attraction as well. The research results show that the information on the websites has to be easy findable, clear, and consistent; photos that substantiate the information are necessary; the information and photos have to be managed properly; and the eWOM part has to be included on the website. Proper management of latter factors can enhance the possibility of maintaining a high quality website that encourages consumer intention to visit the homestead.
اظهر المزيد [+] اقل [-]