bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of High-Dispersed Barium Titanate, in Films With Addition of, and Based on Poly(Vinylidene) Fluoride), on Structure and Electrophysical Properties of Ones
Authors: Dzubenko L. S. , Makhno S. M. , Sapyanenko O. O. , Gorbyk P. P.
Published: March 2018

With the aim of the creation of effective electret materials, the composite films, based on poly(vinylidene fluoride) (PVF), in addition with segnetoelectric of barium titanate (BaTiO3) were obtained in the concentration range of 0.5 – 5.0 %vol.  There are PVF’s melting temperature range becomes narrower, when at 0.5 – 1.0 % vol. of, and, this pointing on more homogeneous crystallite formation by dimensions in. When at high content (5.0 % vol.) of BaTiO3, there is a decrease of crystallization temperature observed (at 5 ºC), and then, there is temperature range broadening exists, and this pointing on forming of larger, but less homogeneous crystallites by dimensions in. It is determined, when composite films of PVF - BaTiO3 , that surface charge is more stable at BaTiO3 content of 4.0 %vol. in, and then, one reaches a value of 10-6 Cl/m2, when at conditions of treatment with electric field and crown discharge, and, at film charge value of 500 kV/m in. There are non-linear dependence of dielectric permittivity exists, either when at low, or very high frequencies, and this may be linked with the influence of high-disperse addition on polymers crystalline structure formation, and sub-surface layers of one.
Promising Cathode Material for Lithium Power Sources LaFe0.5Cr0.5O3
Authors: Yaremiy I. P. , Mokhnatskyi M. L. , Mokhnatska L. V. , Yaremiy S. I. , Kachmar A. I.
Published: March 2018

Nanoscale powders of LaFe0.5Cr0.5O3 with perovskite structure were synthesized by the sol-gel combustion method in this work. From X-rays phase analysis obtained material consisted of one phase LaFe0.5Cr0.5O3 (space group P m -3 m). The average size of RCS of test material is 21 nm. The specific surface area is 14 m2/g. The average particle size is 63.7 nm by approximation that particles form is spherical. Nanoscale powders of LaFe0.5Cr0.5O3were tested as cathode material for lithium power sources. The cathode material demonstrates the specific power capacity of 571 A•h/kg when the discharge of the source is up to 0.5V.
Epidemiology of sepsis in NICU; A 12 years study from Dubai, U.A.E
Authors: ElHalik Mahmoud , Habibullah Javed , El-Atawi Khaled , Abdelsamad Amany
Published: March 2018

In a retrospective analytic study from NICU, Latifa Woman and Children Hospital - Dubai, UAE. over a period of 12 years (2005 to 2016), 380 neonates and infants had clinical signs of sepsis, confirmed by blood or CSF culture. In very early onset sepsis (< 24 hours), E. Coli represented as the most common organism. In infants with early onset sepsis (2-6 days), Klebsiella Pneumoniae was the most common organism. While in late (7-28 days) & very late onset (29-90 days) the most common organism was Coagulase Negative Staphylococci (CONS) followed by Klebsiella Pneumoniae.
The impact of immigrants' educational attainment on employment in agricultural, industrial, and services sectors in oecd
Authors: Didžgalvytė Monika , Pukelienė Violeta , Speer Ausra
Published: March 2018

This article analyzes the impact of immigrants' educational attainment on employment in agricultural, industrial, and services sectors. The research compares data of OECD-20 countries in the period of 1980–2010. The goal of the paper is to analyze the theoretical interpretations of immigration and employment; to measure the impact of immigrants' educational attainment on employment by carrying out an empirical research in selected countries. Empirical analysis has been performed using the methods of descriptive statistics, correlation, regression analysis and System Generalized Method of Moments (GMMs). The results of the empirical research regarding the impact showed that high-skilled immigration has a positive and statistically significant impact on employment in industrial and services sectors, but the impact on employment in the agricultural sector is statistically insignificant. Medium-skilled immigration has a positive and statistically significant effect on employment in all three sectors. However, low-skilled immigration has no effect on employment in either agricultural, industrial or services sectors.
THE EFFECT OF MG AND S ON PHOTOSYNTHESIS PRODUCTS AND NITROGEN CONTENT IN WINTER WHEAT
Authors: DROMANTIENĖ Rūta , PRANCKIETIENĖ Irena , ŠIDLAUSKAS Gvidas , SMALSTIENĖ Vita
Published: March 2018

In 2013 and 2014, field experiments involving winter wheat were conducted at Aleksandras Stulginskis University’s Experimental Station on a medium-textured Cal(ca)ri-Epihypogleyic Luvisol. N150P90K120 were applied as the main fertilizers. Additionally, a foliar fertilizer including amide nitrogen, sulphur and magnesium (MgO concentrations ranging from 0.25 % to 2.5 %), (further referred to as magnesium fertilizer), was sprayed at the tillering and booting stages of winter wheat.
It was found that magnesium fertilizer foliar-applied at the end of tillering and booting stages tended to increase chlorophyll a and b contents in winter wheat leaves. Chlorophyll a content in leaves significantly increased when the solution with 2.5 % concentration of magnesium had been applied at tillering and when 0.5, 1.0 and 2.5 % concentrations of the solution had been applied at booting stages. Chlorophyll b content in winter wheat leaves was significantly affected by the solutions with 0.5, 1.0 and 2.5 % magnesium concentrations at tillering and by the solutions with 0.5, 1.0, 1.5, 2.0 and 2.5 % magnesium concentrations at booting stages. The highest increase in dry matter content was recorded when 2.5 % MgO solution had been applied at booting stage.
A statistically significant correlation was established between the MgO concentrations applied at tillering (r = 0.905*) and booting (r = 0.863*) stages and nitrogen content in winter wheat dry matter.
THE INFLUENCE OF BIOPHYSICAL FACTORS ON PRODUCTIVITY AND BIOCHEMICAL COMPOSITION OF THE BLOOD OF SHEEPS
Authors: SKORYKH Larisa , GRINCHENKO Vitaly , AFANASYEV Michael , KONIK Nina
Published: March 2018

As the livestock industry, sheep breeding takes the third place in the world, this is one of the most extensive types of agriculture. Currently, the main attention in the sheep breeding is directed to increasing in meat productivity and improving the quality of products. The important technique that contributes to the increase and improvement of the quality of livestock production is the use of laser radiation. The article presents the results of research directed to studying of influence of low-intensity laser radiation on the organism of young sheep. The area of impact of laser radiation on the animal organism is defined. The positive influence of laser radiation on the growth and development of young sheep and their immune reactivity is established. The revealed regularity is confirmed by the bigger size of the live weight, increased energy of growth in all studied periods of ontogenetic development, the more developed factors of natural protection at the experimental animals. The effectiveness of the directed impact of laser puncture on the organism of young sheep has been proved to improve meat productivity and resistance. The developed method of laser puncture can be used to increase the meat productivity, safety and resistance of young sheep.
CONTAMINATION OF THE ROOT VEGETABLES WASH WATER AND ITS TREATMENT EFFICIENCY
Authors: DAPKIENĖ Midona , SABIENĖ Nomeda , RADZEVIČIUS Algirdas
Published: March 2018

Growing volume of washed vegetables in Europe and Lithuania means that more drinking water is consumed and more wastewater is produced. Farmers, who engage in washing vegetables, face the problems of wastewater treatment, wastewater storage and utilization. Wastewater released to the environment from their farms would meet hygiene and environmental protection criteria. The aim of the study was to assess the contamination of the root vegetable wash water and to evaluate the possiblity of cleaning of wastewater in the land-based treatment system consisting of one constructed wetland and two biological ponds. The contamination of wastewater, produced by washed root vegetables, in Lithuanian farms was measured according to suspended solids (SS), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total nitrogen and total phosphorus. Pollution of the wash water and wastewater was evaluated comparing the mean values with legislative limit values and with typical sewage contamination values. In all farms wastewater of initial root vegetables washing was treated in settling basins. Wastewater of one carrots washing farm was treated in the land-based wastewater treatment system consisting of surface flow constructed wetland and two biological ponds. Efficiency of the wastewater treatment in this system was according to suspended solids 90%, BOD7 – 97%, CODCr – 92%, total nitrogen – 98% , total phosphorus – 97%. The result shows, that the natural wastewater treatment system is suitable for farms, that wash and produce vegetables, but before releasing wastewater to the environment, it has to be settled.
VALUABLE ENERGY OF BIOCHAR FROM AGRICULTURAL AND FOREST WASTE STREAMS
Authors: DĄBROWSKA Magdalena , JAWOREK Milena , ŚWIĘTOCHOWSKI Adam , LISOWSKI Aleksander
Published: March 2018

Wastes from forest and agricultural industry are still insufficiently used. One of the ways of their preprocessing is a pyrolysis process. Therefore, the aim of this study was to determine the energetic properties of biochar made of walnut shells, forest wood chips and willow chips. The studies were performed according to standards. The moisture contents of the material, the ash contents, the net and gross calorific values were determined. Low moisture and ash content were found in each of the biochar species. For all tested samples the ash contents were lower than 6% and for forest wood chips it was 1.5% only. The way of processing the biomass in the pyrolysis process significantly increased the calorific value of the raw materials. It was found that the net calorific values of the tested materials were high and reached the amount of 26.58 MJ‧kg-1 for biochar made of walnut shells, 22.29 MJ‧kg-1 for biochar made of forest wood chips and 24.59 MJ‧kg-1 for biochar made of willow chips. Due to the good physical properties of biochar produced from waste and biological materials, it was found that these solid fuels can be used for energy purposes.
WATER QUALITY AND WASTE CONTAMINATION STUDY IN CATFISH REARING RECIRCULATING AQUACULTURE SYSTEM
Authors: ŽIBIENĖ Gražina , ŽIBAS Alvydas
Published: March 2018

In this article we analyse catfish rearing conditions in recirculating aquaculture systems (RAS). Based on research, performed by scientists from different countries, we evaluated optimal water parameter values for catfish rearing. African catfish growing process and with it associated factors were researched in JC ,,Šamas“. The amount of dissolved oxygen (on average 4,53 mg/l) in the rearing basin is adequate for the catfish to feel comfortable and for biomass growth. Water temperature only varies slightly – the average water temperature is 23,30C. The ideal pH for rearing fish in RAS is 7.0. Many aquaculture species continue to feel comfortable in pH boundaries of 6.5-8.5. In the samples, taken from catfish rearing system, the pH varied from 5.58 to 6.63. Such acidic water decreases the effectiveness of biological filter, but also decreases the toxic effect of excreted ammonia on the fish. Only a small amount of suspended solid is present in the samples, which means that they are being removed properly. The average amount of ammonia nitrogen in the water basins in analysed catfish rearing systems is 1,171 mg/l. The analysed water samples presented an average nitrite amount of 0,974 mg/l. The recommended amount of nitrites for catfish is less than 0.5 mg/l. The analysed samples presented relatively high nitrate values – from 412 to 495 mg/l. In order to decrease the concentration of accumulated nitrates it is required to change no less than 10% of total system water volume every day. The index of consumed biochemical oxygen corresponds to the requirements for water quality in RAS
EFFECT OF TEMPERATURE AND EXCESS AIR RATIO ON COMBUSTION PROCESS OF MIXTURES OF ERUCIC RAPESEED
Authors: KUPCZYK Adam , TUCKI Karol
Published: March 2018

The paper presents results of investigations into diesel engine fuelled with high erucic acid rapeseed oil and its mixture with diesel, petrol and ethanol at different proportions. The study was performed in a chamber with constant volume depending on temperature and air pressure and the coefficient of excess air. The main purpose of performed tests was to determine the effect of various parameters on processes of spontaneous combustion and combustion of fuels. During the study basic parameters of combustion, e.g. auto-ignition delay, greatest pressure and contractual time were compared. Studies show that increased pressure injection improves combustion process for all test fuels, and injection pressure most strongly affect the combustion process of rapeseed oil and its mixtures with ethanol.
EVALUATION OF SUITABILITY TO USE PLASTIC WASTE IN CONCRETE PRODUCTION
Authors: SKOMINAS Rytis , ZVINAKEVIČIUS Linas , GURSKIS Vincas , ŠADZEVIČIUS Raimondas
Published: March 2018

Nowadays one of the main tasks of environmental protection is the management and recycling of plastic waste. Plastic occupy the major part of all public waste and with this material is polluted all earth. In natural condition plastic decompose in 400 or even in 500 years. Therefore, it is important to solve this problem reusing plastic waste. One of the possible areas is construction industry. In the present paper were estimated how plastic waste impact the properties of concrete. During the research the part of coarse aggregates were changed with polyethylene (PE) pellets and cut polypropylene (PP) particles. The change of fresh concrete density, workability and hardened concrete density, compression strength, water absorbability were evaluated. The results show, that plastic waste has a positive effect on fresh concrete properties: the concrete become more workable and lighter. Unfortunately, on the main hardened concrete properties the increase plastic waste amount has the negative effect: the compression strength was decreasing and the water absorbability was increasing. However, generalizing all results, can be stated, that keeping the same level of concrete workability there are possibilities to reduce water and cement ratio and it will give strength loss and water absorbability growth compensation.
THE EFFECT OF SEWAGE SLUDGE ON AND CUP PLANT’S (SILPHIUM PERFOLIATUM L.) BIOMASS PRODUCTIVITY UNDER WESTERN LITHUANIA’S RETISOL
Authors: ŠIAUDINIS Gintaras , KARČAUSKIENĖ Danutė
Published: March 2018

The long-term field experiment with new high yielding perennial energy crop - cup plant (Silphium perfoliatum L.) was conducted in order to evaluate its biomass productivity in Vėžaičiai branch of the Lithuanian Research Centre for Agricultural and Forestry. Experimental site – naturally acid Bathygleic Dystric Glossic Retisol, pH 4.2-4.4. Granulated sewage sludge was applied (at 45 and 90 t ha-1 rates) as an alternative organic fertilizer. The fertilization was done at the beginning of the experiment, prior to cup plant’s sprouts planting in 2013. Each experimental year, traditional N60P60K60 fertilization was performed in a separate treatment. Cup plant’s biomass was harvesting once per season at the end of vegetation.
Cup plant’s dry mass (DM) yield substantially increased from 2.80 t ha-1 (in 2014) to 13.41 t ha-1 (in 2016). The use of sewage sludge fertilization was notably superior to that of mineral fertilization for cup plant’s biomass productivity. In all experimental years, the optimal was the application of 45 t ha-1 rate of sewage sludge - in compare with unfertilized treatment (control), DM yield increased by 66 %, on average. Increasing of sewage sludge rate up to 90 kg ha-1 did not give any DM yield supplement. Energy evaluation of growing technology revealed that the application of 45 t ha-1 sewage sludge rate caused the substantial increase of energy output from 1 ha; and on the contrarily, sharply decreased net energy ratio.
In order to determine the long-term effects of fertilization on biomass yield, these studies will continue a few more years.
DETECTION OF CHANGE IN DROUGHT FREQUENCY IN BYDGOSZCZ REGION, CENTRAL POLAND
Authors: KUŚMIEREK-TOMASZEWSKA Renata , DUDEK Stanisław , ŻARSKI Jacek
Published: March 2018

The aim of the work, carried out within the framework of research on currently occurring rather than predicted climate changes, was to confirm or deny the hypothesis of increasing incidence of droughts in central Poland (the Bydgoszcz region) over the years 1986-2015.
According to projections of climate change, the variability and extremity of weather conditions are expected to increase. In studies conducted under some climate scenarios, it was shown that atmospheric precipitation variability in central Poland will increase even to 20%, depending on the scenario. Some researches indicate that these changes are already taking place. The material was the data of precipitation measurements gained from weather station, located in a poorly urbanized area, at the Research Center of the University of Science and Technology. Totals of atmospheric precipitation in the 30-year period were analyzed (1986-2015). Dry periods in individual months, seasons, half-years and entire years were identified on the basis of the relative precipitation index (RPI). The precipitation totals in the years 1986-2015 were characterized by a very high temporal variability and thus increased the climatic risk of plants cultivation. The significant positive trend of precipitation totals was found only for the cold half-year, which is consistent with the projections of the IPCC report. The frequency of the occurrence dry months was 38.6%, of seasons 38.3%, half-years 35.0% and years 30.0%. There was noted no increasing frequency of dry periods with years; just to the contrary, a decreasing tendency was identified.
DETERMINANTS OF LEADING OF ORGANIC FARMS IN MAŁOPOLSKA REGION
Authors: MATYSIK-PEJAS Renata , SZAFRAŃSKA Monika , LATO Elżbieta
Published: March 2018

Poland is a country with significant potential for the development of organic farming. This is due to the possession of rural areas characterized by favorable natural and productive conditions. The advantages of Polish agriculture include relatively clean environment, low chemicals consumption, large labor resources and relatively low labor costs. The main objective of conducted research was to present factors determining the leading of organic farms in the conditions of fragmented agriculture in south Poland. The research was conducted in the Malopolska Voivodeship in 2017. Source material for analysis was primary information collected using PAPI method. In the survey participated 50 certified organic farms chosen by using purposive method of sample selection. In the area structure of surveyed organic farms dominated farms from 5.1 ha to 10 ha. The most popular direction of agricultural production on farms was the growing vegetables. Owners of organic farms as one of the main reasons for moving the farm from conventional to organic systems, considered the possibility of obtaining subsidies for one hectare of cultivation. These subsidies provide them financial support especially in the first years of operation on the market. The least important reason for transformation a farm from conventional to organic system was the factor associated with the reduction of environmental pollution as a result of the change in system of farming. As one of the advantages of running a organic farm, producers pointed the possibility of selecting disease-resistant plant and animal species and creating additional workplaces. On the other hand, as a basic disadvantage of organic farming, farmers pointed out the difficulties in finding market for the products from the farm. Most farm owners cooperate with various organizations connected with ecology. Very popular among them are also different kind of training courses, which are aimed at expanding knowledge of organic production. At the same time the educational activity of the surveyed farms is very low. Only in a few farms was conducted educational activity for children or people interested in ecology.
THE VOLUME OF WOOD FOREST RESOURCES IN THE EUROPEAN UNION COUNTRIES
Authors: TURCZAK Anna
Published: March 2018

The contributions of forests to the well-being of humankind are extraordinarily vast and far-reaching. They are an important element in mitigating climate change. The aim of the paper is to determine the influence of particular factors on the diversity of the European Union countries in terms of the amount of wood forest resources compared with the country size. Two factors affecting the variable have been analysed in the paper: 1) the growing stock per 1 hectare of forest area and 2) the quotient of the forest area and the land area without inland water. Those two independent variables are directly proportional to the dependent variable, thus the higher the growing stock density and the higher the forest cover, the bigger the amount of wood forest resources of the analysed country. The causal analysis allowed to answer the question how the two factors affect the variable considered in the twenty eight countries, namely, what the direction and the strength of their influence are. The logarithmic method was used to carry out the causal analysis. The average results obtained for the entire European Union were compared with those received for each country separately and, on this basis, final conclusions were drawn. Data for 2005, 2010 and 2015 have been used for all needed calculations.
GREENING OF PRODUCTION PROCESS IN FOOD PROCESSING ENTERPRISES IN POLAND
Authors: ZIELIŃSKA-CHMIELEWSKA Anna
Published: March 2018

The article focuses on specific aspects of greening of production processes in food processing sector in Poland. It discusses relevant methods and techniques for managing the eco-friendly production process in the examined food processing enterprises in Poland, and compares the situation in the world. The purpose of the paper was also to present the results of the questionnaire on greening of producing process in food processing entities. The results of the questionnaire are preceded by a detailed analysis of different approaches to greening of production, along with an assessment of its future development according to the requirements of EU directives for food processing enterprises in Poland. The results showed that after Poland's accession to the European Union the majority of food processing enterprises implemented and intensified their efforts on water conservation, waste disposal, and reduction of energy consumption between 2010 and 2017. However, in practice, there was no considerable reduction of pollutants due to the setting of insufficient level of emission targets.
PRODUCTION AND MARKET OF ECOLOGICAL PRODUCT IN POLAND
Authors: KORELESKA Ewa
Published: March 2018

The goal of this study is to evaluate the condition and development prospects of ecological farming and its product market in Poland. Sources of data used for the analysis included: IJHARS (Agicultural and Food Quality Inspection) national reports, literature, and information provided by experts and consumers. The time frame of the research covers the years 2004–2020. The date of Poland's accession to the EU 2004, and subsequent formal-legal factors were taken into consideration to schedule the time frame of the research. The trend was analyzed in reference to the number of ecological farms and the area of ecological farmlands as well as ecological manufacturers in 2004–2016. The method of the “least squares” was used in the study. Parameters of the trend function equation (linear, square) were determined by means of this method. MS Excel calculation sheet was used as a calculation tool. The value of determination coefficients indicated good consistence of the determined trend lines with empirical data. A distinctive linear trend with upward tendency in the number of ecological manufacturers was found in the analysed period of time. According to the determined trend function, the number of ecological manufacturers could be more than 764 in 2020, that is, reach the expected value according to the assumptions of the Framework Action Plan for Ecological Agriculture and Food in Poland for the years 2014–2020. The analyses were confronted with the experts' assessment results carried out by the method of online survey and consumers'' assessment by the method of group interview carried out in 2017. Two measurement instruments were prepared, that is, a survey questionnaire and interview scenario. It needs to be noted that although during the last 3 years a drop in eco-production was reported, development of ecological agriculture and its product market in Poland is possible, on condition that the government policy in this field is consistent and predictable, the society becomes richer and the ecological awareness of both farmers and consumers improves.
REGIONAL DEVELOPMENT INSTRUMENTS FOR PROMOTION OF ENTREPRENEURSHIP IN TERRITORIES WITH UNFAVORABLE SOCIO-ECONOMIC SITUATION: THE CASE OF THE LATVIA
Authors: ZIEDINA Dace , PELSE Modrite
Published: March 2018

The development gap between regions and even countries has always been actual problem in field of regional policy. Regional development disparities especially are important problem in territories with unfavourable socio-economic situation. To minimize this problem, many Eastern Europe countries, including Latvia, implemented special economic zones and free ports as regional development instrument with aim to mitigate regional development differences between regions by attracting investments and creating new jobs.
Experience with special economic zones in Latvia are likely close with Poland’s case, thus experts from Poland affirms that, every 100 jobs given in special economic zone create on average about 72 jobs outside the special economic zone hosting territory and 137 jobs in neighboring counties. Latvia, since the restoration of sovereignty, established five economic zones in total – two of them are situated in Latgale, which is the least developed region of Latvia. Researchers have not been widely contributed to analysis of special economic zones impact to regional development. Authors evaluated impact of created job places of special economic zones in Latgale region to unemployment level.
Results of research show that special economic zones as regional development instrument creates significant impact to regional development in territories with unfavourable socio-economic situation.
CONTRIBUTION OF AGRICULTURAL SOURCES TO NUTRIENT LOAD GENERATED ON THE RUSSIAN PART OF THE BALTIC SEA CATCHMENT AREA
Authors: BRIUKHANOV Aleksandr , KONDRATYEV Sergey , TARBAEVA Veronica , VOROBYEVA Ekaterina , OBLOMKOVA Natalia
Published: March 2018

Agricultural production is one of the main sources of nitrogen and phosphorous inputs to the water bodies. Quantifying nutrient input from agriculture is needed both to develop effective environmental measures and to justify the technologies to be applied with due account for local natural and climatic conditions. Several related national studies have been conducted since 2015. Institute for Engineering and Environmental Problems in Agricultural Production (IEEP) methodology was used for this purpose. It determines the nitrogen and phosphorus content in the arable layer, including N and P amounts applied with mineral and organic fertilisers. Such factors as soil type and texture, the distance to the water bodies and the land use structure are used to estimate the nutrient input to the water bodies. In addition, the consistency of manure handling technologies with Best Available Techniques (BAT) principles is taken into account through introduction of relevant coefficients. Calculation results according to IEEP methodology were used in the follow-up general assessment of the nutrient load on the water bodies from different sources with the use of Institute of Limnology Load Model. Satisfactory correspondence between the assessment results and the values calculated using the monitoring data confirmed the adequacy of the above assessment procedure. Following its outcomes, the nutrient reduction potential of agricultural sources is approximately 10–20 %.
FARMERS' EXPOSURE TO NOISE AND VIBRATION IN SMALL AND MEDIUM-SIZED FARMS
Authors: BUTKUS Ričardas , VASILIAUSKAS Gediminas
Published: March 2018

Occupational noise, hand-arm and whole-body vibration are the main human health risk factors in various economic activity sectors including agriculture. Workers of agricultural sector are usually under increased risk as their exposure to these risk factors is usually longer than reference 8 hours. Moreover, most agricultural activities are related with the processes which include multiple equipment and machinery therefore noise and vibration exposure analysis is a complex issue which is usually undeservedly simplified. This problem can be emphasized by statistical data provided by State Labour Inspectorate of the Republic of Lithuania. Occupational diseases registered for farmers, agricultural and forestry workers consist 16 % of all those registered in Lithuania. Four of five occupational diseases registered in Lithuania are related to vibration and noise (musculoskeletal (66 %) and hearing loss (13 %) and has the increasing tendency over the last years. These tendencies demand a deeper analysis of noise and vibration exposure of farmers and farm workers as obtained results could help to specify the strategy or procedure to reduce negative exposure effects. The results reveal that noise exposure level usually exceed exposure action value of 80 dBA while hand-arm and whole-body vibration exposure limit value of 1.15 and 5 m/s2 respectively.
THE DETERMINATION OF OLEIC ACID CONTENTS IN SUNFLOWER GENOTYPES
Authors: KAYA Yalcin , COLAK Caglar , PEKCAN Veli , Ibrahim YILMAZ Mehmet , EVCI Goksel
Published: March 2018

High oleic sunflower is new trend both in Turkey and also in the world due to that it present healthy vegetable oil and also higher standing ability for frying. Higher oleic acid also affects from environment especially nigh temperatures during the grain filling period but genetic contribution is also important. High oleic acid content comes from Pervenent mutation in sunflower and it controlling Ol genes. However, because of being a seed trait which is determining after harvest, it is so difficult and unnecessary works (waiting even low oleic ones until seed treshing, etc) to select high oleic sunflower genetic materials. Therefore, selection utilization of molecular markers for determining of higher oleic types help breeders a lot to select accurately high oleic ones and also reduce costs both workers, isolation material, etc… The study covers determining of higher oleic type sunflower genetic materials developed in National Sunflower Hybrid Breeding Project conducted by Trakya Agricultural Research Institute. To screen of high oleic acid genotypes, around 400 sunflower F2 and F3 individuals obtained from crosses between high oleic acid and low oleic acid lines were used in TUBITAK (The Scientific and Technological Research Council of Turkey) Project 1003-114O971. Fatty acids of sunflower genotypes were determined by Agilent 6850 Gas Chromatography in Trakya University Lab. Based on the study results, oleic acid contents of sunflower genotypes were changed between 21.9-91.8 %, linoleic acid contents of them between 1.1-66.5 %, palmitic acid contents of them were between 3.4-8.0 % and stearic acid contents of genotypes were changed between 1.1-9.7 %. The higher oleic types were selected based on the study results for further generations.
OBJECTIVES AND RESOURCES USES RANKING IN SOLIDARITY PURCHASING GROUPS: LITERATURE REVIEW AND DESIGN PRINCIPLES
Authors: ASCANI Michela , MARTINO Gaetano
Published: March 2018

The objective of the paper is investigating food networks (FNs), focusing on the emerging of recurring themes in literature and investigating how the networks relationships may influence the resources uses in farming activities. The research was carried out through access to Web of Science and Scopus databases in order to investigate the literature on FNs. The period considered is 2000-2016, using as selected key words food networks, food and practices, alternative food networks. Then we selected and classified the resulting articles and identified a set of themes addressed in literature. The main outcome of this analysis is the identification of the following themes: a) common/shared FNs characteristics; b) trust creation and embeddedness facilitated by face to face relations; c) role of FNs in transformation of food systems towards social, environmental and health objectives; d) food citizenship/sovereignty-civil engagement; e) values inspiring FNs objectives, namely sustainability, fairness/social justice, health protection, ethical consumption/political action; f) governance of the consumers-producers relations. We argue that identified themes are dimensions related to FNs objectives. More precisely we then conceptualize the identified characteristics as drivers of the ranking of resource uses in farming systems. Elaborating on this idea we derive principles for supporting the design of governance of these groups. The study concludes underlying the complexity of food networks and their capability to influence the resources uses by setting up flexible but resilient governance structures.
AUTOMATIC CONCENTRATE DISTRIBUTION FOR FATTENING OF ROMANOV × DORPER LAMBS
Authors: ŠENFELDE Līga , KAIRIŠA Daina
Published: March 2018

The aim of this research was to study the possibility of using automatic concentrate feeding stations in fattening of lambs. Ten Romanov × Dorper weaned male lambs (initial live weight 21.0 ± 0.86 kg) for fattening were used. Lambs were kept indoors in separate pen and research was carried out in production conditions. Concentrate was distributed for animals individually in automatic feeding station. Adaption period were not applied, eight lambs had the concentrate intake in the automatic feeding station from first research day, one started eat concentrate from third research day and one – from eleventh day of research. The frequency of visits to automatic feeding station and daily concentrate intake was recorded and analyzed. Lamb’s were weighted before research and every fourteen days, live weight changes were analyzed. During all the research average number of daily visits to automatic feeding station of one lamb were 13 visits, average daily concentrate intake per animal was: 84 % of the average ration (1642 g) in all research period. Results shows, that average daily live weight gain was 246 ± 26.3 g, during last quarter daily live weight gain (89 ± 27.7 g) was significantly (p &lt; 0.05) lover than in other quarters. For 1 kg lamb live weight gain 5.39 kg concentrate was used.
COMPARISON OF PHOTOSYNTHETIC PARAMETERS IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) VARIETIES
Authors: VAGUSEVICIENĖ Ilona , KAZLAUSKAITĖ Sonata , JUCHNEVICIENĖ Aiste , BYLAITE Asta , ŽEBRAUSKIENĖ Audrone
Published: March 2018

Dynamics of photosynthesis pigments in the leaves of different varieties of winter wheat during the vegetation period is analyzed in the paper. The accumulation of pigments in the plant depends on the physiological activity, growth and development of the plant, therefore the composition and content of photosynthesis pigments chlorophyll a, b and carotenoids reflect the general condition of the plant. The ratio of chlorophyll a / b for normal photosynthesis activity in the leaves of the plant should be at least 1:3. The object of the research is different varieties of winter wheat (Triticum aestivum L.) - 'Artist', 'Edvin', 'Skagen', 'Bertold' and 'Viola'. Field experiment was carried out at the Experimental Station of Aleksandras Stulginskis University in 2015-2016. Soil type was identified as IDg8 - k (LVg - p - w - cc) - shallow calcareous luvisol (Calc (ar) i - Epihypogleyic Luvisols). Agrochemical parameters of the soil were determined using accepted analytical methods. The content of photosynthesis pigments (chlorophyll a, b and carotenoids) in green leaf mass was determined in 96% ethyl alcohol extract applying spectrophotometric Wettstein method, “Genesys” 6 spectrophotometer. The photosynthesis productivity (Fpr) was calculated according to the formula: Fpr = 2 (M2-M1) / (L1 + L2) T. The accuracy of the data analysis was estimated according to the standard measurement deviation from the mean. The highest content of photosynthesis pigments has been accumulated by winter wheat variety 'Skagen'. The best result has been observed at the end of nodding stage. A lower content of photosynthesis pigments has been found in the leaves of 'Edvin', 'Viola' and 'Artist' varieties. The highest photosynthesis productivity of all winter wheat varieties has been recorded at the end of nodding stage, and decrease of photosynthesis productivity has been observed since milk maturity stage.
RELATION BETWEEN APPLE-TREE YIELD SELF-REGULATION AND METEOROLOGICAL CONDITIONS DURING FRUIT SET
Authors: STARKUS Aurelijus , GELVONAUSKIENĖ Dalia , FRERCKS Birutė , BENDOKAS Vidmantas , SASNAUSKAS Audrius , STANYS Vidmantas
Published: March 2018

Apple has a tendency to bear huge amount of flowers or inflorescences. Plants have ability to eliminate excess number of fruitlets. Frequently fruit trees eliminate insufficient number of fruitlets to grow good quality fruits. Most processes related to yield self-regulation varies significantly between different apples varieties. Also meteorological conditions influenced flower buds differentiation and fruit growth during blooming and other development stages. The investigations were carried out in 2015 – 2016 at the Institute of Horticulture. The main aim was to evaluate yield self-regulation peculiarity in various apple varieties in different meteorological conditions. In our experiment we made fruit self – thinning evaluation of 15 different varieties. Meteorological conditions were varying. In 2015 there was lack of rainfall, while 2016 year was rainy. After each fruit-drop period the number of developed and undeveloped seeds were counted of self-sheded and normally growing fruits. Amount of developed seeds as auxins source is one of the most important factor for yield self-regulation. Varieties of apple which are blooming abundantly and eliminate high amount of fruitlets, grows fruits until maturity with stabile amount of developed seeds and produces permanent harvest annually, independently from meteorological conditions during vegetation. Such apple varieties need higher amount of developed seeds to inhibit abscission. Apple varieties tended to bloom abundantly and eliminate small amount of fruitlets depending on meteorological conditions. Demand of auxins to carry fruits depends on meteorological conditions therefore these apple-trees develop different amount of seeds, when weather conditions changes. We may presume, that different apple varieties need different amount of phytohormones or their ratio to hold fruitlets on the apple. Therefore apple trees with smaller amount of seeds in fruits grow more fruits to its normal size.
DAILY DYNAMICS OF MILK QUALITY INDICATORS
Authors: TRUKHACHEV Vladimir , OLEYNIK Sergey , ZLYDNEV Nikolay
Published: March 2018

Dairy cattle breeding is one of the main suppliers of protein and animal fat, it is one of the most important branches of agriculture and plays a primary role in providing adequate nutrition for the population. During the purposeful work on harmonization of the national regulatory framework with international legislation, special attention is paid to scientific developments in the way of full implementation of Russian livestock production in the global trading system.
The recommendations of the International Committee for Registration of Animals (ICAR) (Global Standard…, 2017; Trukhachev et al., 2017) are the methodological basis for the introduction of the generally accepted organizational principles for the recording and evaluation of the productive qualities of animals. One of the stages of this process was implementation in 2015-2017. in the Stavropol State Agrarian University of research projects, especially significant for the agro-industrial complex of the Russian Federation in the direction of ensuring import substitution in animal husbandry (genetic material), which envisage the development of a regional model for the formation and management of highly productive genetic resources for dairy cattle.
The object of the research was cattle (cows) of the North Caucasian population of the Ayrshire breed (n = 550), from which, based on the analysis of the materials of the primary zooveterinary records, groups of cows with 3-fold milking were formed to study the daily dynamics of fat and protein content in raw milk samples I, II and III milking, n = 240) and 2-fold milking (I and II milking - 180 cows). In the process of performing monthly analyzes of the quality of individual milk samples obtained from pedigree cows taken for 2- or 3-fold milking, it was found that a certain pattern is observed in the diurnal dynamics of fat and protein content in milk, which probably has a general biological nature and largely depends on the technological factor - the multiplicity of milking cows, which coincides, basically, with the regularities described in the methodology of the International Committee for Registration of Animals (ICAR).
The nature of the dynamics of the concentration of fat in milk at 2- and 3-fold milking has, though a different mathematical form, but they have a general tendency: the fat in milk for milking cows, as a rule, is 10.77–10.98 % lower, than II and III milking. The variability of the protein concentration in milk during the day is the same as the fat dynamics, though it is less expressed than of fat and accounts 0.88%.
INFLUENCE OF CYLINDER DESIGN ON ITS SPEED DURING CORN EAR THRESHING
Authors: STEPONAVIČIUS Dainius , KEMZŪRAITĖ Aurelija , KINIULIS Valdas , ANDRIUŠIS Albinas , JUKNEVIČIUS Darius
Published: March 2018

Technological and structural parameters of a threshing unit must ensure the highest possible quality of its operation under minimum input and cost. The aim of the study was to estimate the variation of speed of threshing cylinder with two different shapes of filler plates (FP-I and FP-II) under various corn ear feed rate into combine harvester.
Threshing cylinder speed (frequency of rotation) nb (min-1) was measured simultaneously each 0.075 s using stationary tangential single-cylinder threshing unit located in laboratory-training ground intended for investigation into technological processes of agricultural machinery. Frequency of rotation of non-loaded threshing cylinder speed amounted for 450 min-1.
Increase in corn ear feed rate from 6 kg s-1 to 12 kg s-1 caused frequency of rotation of threshing cylinder to decrease from nb=437.82±0.21 min-1 to nb=420.96±0.50 min-1 (using FP-I). Replacing covered spaces between rasp bars with FP-II had no effect on cylinder speed – it has decreased from 438.06±0.23 min-1 to 421.37±0.32 min-1. Results showed that in case of FP-I, the amplitude of speed Anb has increased from Anb=4.07±0.44 min-1 to Anb=8.60±0.88 min-1, whereas in case of FP-II – from Anb=2.67±0.25 min-1 to Anb=4.52±0.62 min-1 in response to increased feed rate from 4 kg s-1 to 12 kg s-1. This means that using the covers FP-II the threshing apparatus will work more evenly. The average threshing cylinder speed, irrespective of the closure of spaces between rasp bars, was found to decrease by approx. 20 min-1 in result of increase in corn ear feed rate from 4 kg s-1 to 12 kg s-1. When threshing corn ears, irrespective of the shape of filler plates, the acceptable feed rate amounted for 10 kg s-1, as it caused to exceed the permissible limit of 5 % allowed for decrease in cylinder speed (nb=427.5 min-1).
CHANGES IN THE MANAGEMENT OF MUNICIPAL WASTE IN POLAND - TOWARDS THE CIRCULAR ECONOMY
Authors: GOŁĘBIEWSKA Barbara
Published: March 2018

Increasing demand for consumer goods causes more and more waste. In line with the principle of sustainable development, waste policy should aim at ensuring that waste produced has the least impact on the natural environment. One solution is to use a circular economy. According to this concept waste production should be minimized as much as possible. Therefore, action should be taken to enable all raw materials to "stay" in economy for as long as possible. Main goal of the article is defined as an assess of the changes in the generation and management of municipal waste before and after the amendment of the Clean House Act. As the research tasks were adopted to present changes in waste management legal regulations: • to indicate waste generation level in Poland, • the origin of the waste, • to analyses and evaluate changes in the field of waste recovery, recycling and reuse. In this context there is an important question, how could we decrease production and consumption in order to generate lower quantity of waste or recycle them appropriately and use again. After the entry into force of the law on the maintenance of cleanliness and order in municipalities, there was a decrease in a production of mixed waste. Between 2012-2016 there was an increase in the amount of municipal waste picked up selectively. The amount of mixed waste recycled in 2016 has increased fourfold in comparison to 2012, and the amount of waste recycled has increased by 42 times.
INFLUENCE OF CHLORIDE CORROSION ON THE STRESS-STRAIN STATE OF THE REINFORCED CONCRETE PLATE ON AN ELASTIC BASE
Authors: SHIMANOVSKY Alexandr , GRIDNEV Sergey
Published: March 2018

The operating conditions of a number of reinforced concrete structures used in agricultural production cause the need of taking into account the chloride corrosion to analyze their long-term operation strength. Under the influence of chloride corrosion, the destruction of concrete and corrosion of metal reinforcement appear and lead to a change in the stress-strain state of the reinforced structures and to their durability reduction. In the presented work, the mathematical model of the elastically based reinforced concrete plate under the influence of chloride corrosion is presented as a fourth-order nonlinear differential equation in partial derivatives. The effect of concrete degradation on the stress-strain state of the structure was implemented by a technique involving a method of successive parameter perturbations to solve the nonlinear part of the problem and the grid method for solving the boundary part of the problem. There was developed a program that allows to analyze the behavior of the reinforced plate under the action of chloride corrosion on one or both surfaces of the plate. The algorithm of the program allows to change the boundary conditions, reinforcement parameters, direction, concentration and chlorides’ penetration velocity. There was analyzed the change in the stress-strain state of the reinforced plate over time for one of the possible variants of chloride corrosion pattern. On the basis of the computational results’ analysis it was demonstrated how the durability curve changes due to the action of chloride corrosion.