Show Advanced search options Hide Advanced search options
Presence, feeding and health status of collared doves (Streptopelia decaocto Friv. 1838) on animal breeding farms
Published May 23, 2006

In the course of our examinations we were determining the gender of collared doves (Streptopelia decaocto) feeding at animal breeding farms by biometric data. We were estimated their nourishment and necropsies were carried out.
We compared the results of the nutrition analysis with similar data of collard doves feeding at agricultural areas....
We analyzed the crop and gizzard content and recorded the body proportions of collard doves that were captured between December of 2004 and August 2005. In the course of the necropsy examinations we did parasitological, bacteriological examinations as well as examinations for the detection of Newcastle disease. In the course of the gender analysis of the collard doves that were collected at animal breeding farms, both the wing length and the length of the third quill-feather has shown a significantly greater value in the case of males (p>0.05).
From the orts found in the crop and gizzard it has been stated that the feed consumed the most was corn (80.77% m%). The collared doves consumed much less other cereal seeds (wheat 0.82%, barley 1.26%).
In the course of the necropsy examinations done in the Veterinary Institute of Debrecen, the birds proved to be free of parasites, and the results of the Salmonella and Newcastle disease analysis were negative as well. E. coli bacteria had been detected in the liver of not more than three birds.

Show full abstract
Comparative analysis of maize weed control system and the competitive effect of sorghum
Published November 10, 2010

In our investigation we used different weed control technologies in the different phenology states of the maize. The experiment have been
carried out in Hódmezővásárhely, in the Experiment garden of the Pilot farm of University of Szeged Faculty of Agriculture, on meadow
chernozem soil, on 24 m2 plots, in 3 replications, ra...ndomized blotch design. The experiment can be regarded as 15 weed-control strategies
where, in addition to the untreated control, six chemicals or chemical-combinations are applied (Spectrum 720 EC, Motivell Turbo D,
Stellar + Dash HC, Clio + Akris SE + Dash HC, Clio + Dash HC) in five different times (pre, early post, post and two late post) and eight
mechanical weed-control technologies were used. Hoeing took place connected to the herbicide treatments in different times: until 2-3-leave
age weedless, in 3-4-leave age hoed once, from 3-4-leave age weedless, in 6-7-leave age hoed once, from 6-7-leave age weedless, in 8-leave
age hoed once, from 8-leave age weedless.
Our results were assessed by chemical efficiency examination, maize length measurement, corncob-length and fertility examination,
Sorghum plant-number determination and yield weighing carried out in four periods. The data were evaluated by a one-factor analysis of
variance and a two-factor linear regression analysis.

Show full abstract
Near infrared spectroscopy (NIT) analysis of maize hybrids starch content
Published February 10, 2013

...5); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;">The purpose of my research is to find the most favourable maize hybrids for bioethanol-production feedstock, using the so called „NIT”, near infrared spectroscopy method in the analysis of the inner contents especially of starch content. The other goal of my analysis is to reflect on how the effects of the most important growing factors – such as irrigation and the use of different dose fertilizers – contribute to the maize hybrids starch content.

Show full abstract
Spatially Discrete GIS Analysis of Sampling Points Based on Yield and Quality Analysis of Sugar Beet (Beta vulgaris L.)
Published March 4, 2006

Fulfilment of the increasing quality requirements of sugar beet production can be analysed with sampling of plants and soil at the cultivated area. Analyses of the spatial characteristics of samples require exact geodetic positioning. This is applied in practice using GPS in precision agriculture. The examinations were made in a sample area loc...ated in north-western Hungary with sugar beet test plant. According to the traditional sample taking procedure N=60 samples were taken in regular 20 x 20 m grid, where besides the plant micro and macro elements, the sugar industrial quality parameters (Equations 1-2) and the agro-chemical parameters of soils were analysed. Till now, to gain values of mean, weighted mean and standard variance values, geometric analogues used in geography were adapted, which correspond to the mean centre (Equation 3), the spatially weighted mean centre (Equation 4), the standard distance (Equation 5), and the standard distance circle values. Robust spatial statistical values provide abstractions, which can be visually estimated immediately, and applied to analyse several parameters in parallel or in time series (Figure 1). This interpretation technique considers the spatial position of each point to another individually (distance and direction), and the value of the plant and soil parameters. Mapping the sample area in GIS environment, the coordinates of the spatially weighted mean centre values of the measured plant and soil parameters correlated to the mean centre values showed a northwest direction. Exceptions were the total salt and calcium-carbonate contents, and the molybdenum concentration of the soil samples (Table 1). As a new visual analysis, the spatially weighted mean centre values of the parameters as eigenvectors were projected to the mean centre values as origin. To characterize the production yield, the raw and digested sugar contents of the sample area, the absolute rotation angles of the generated vectors were determined, which indicate numerically the inhomogenity of the area (Figure 2). The generated spatial analogues are applicable to characterise visually and quantitatively the spatial positions of sampling points and the measured parameters in a quick way. However, their disadvantage is that they do not provide information on the tightness and direction of the spatial correlation similarly to the original statistical parameters.

Show full abstract
The toxic effects of aflatoxin microorganisms in plants used as spices
Published October 5, 2010

As an extension of the analysis of black, white and capsicum peppers for aflatoxins , we have examined an additional 11 types of spices and
4 herbs for these mycotoxins. The investigations consisted of assessment of the applicability of available methods of analysis and modifications of
these, where necessary together, with a limited surv...ey of each spice and herb for aflatoxins. The analysis of 13 types of ground spices reported
the presence of low concentrations of aflatoxins in some samples of black pepper, celery seed, and nutmeg. We decided to include in our study 5
of the spices examined by these workers (cinnamon, celery seed, coriander, nutmeg, and turmeric) for a comparison purpose. In addition we
examined ginger, mace, cumin seed, dill seed, garlic powder, onion powder, and the herbs marjoram, rosemary, thyme, and sage.

Show full abstract
Using phenotypic correlations in the breeding evaluation of Hungarian Sport Horse mares
Published May 23, 2006

The aim of this paper is to analyse phenotypic relationships between self performance test (SPT) parameters of Hungarian Sport Horse mares. Establishing these relationships may contribute to develop a breeding value estimation model. Data were given by the Association of Hungarian Sport Horse Breeders.
The analysis is based on the SPT result...s of 3 and 4 year old mares from 1993 to 2004. Our aim is to determine practically explainable correlations among conformational traits (type, head, neck, saddle region, frame, forelegs, hind legs, regularity of movement, impulsion and elasticity of movement, overall impression); free jumping performance (jumping style, jumping ability, observation during training) and movement analysis traits (walk, trot, canter, overall impression, test rider’s score). A further aim is to determine correlations between free jumping performance and movement analysis traits.

Show full abstract
Examination of the interval between litters (IBL) of different genotype HLW sows using survival analysis
Published October 24, 2016

In this study our aim was to find out if there is a difference between the genotypes determined for the previously identified mutations of seven genes of the Hungarian Large White in terms of the time spent in production. We identified the previously determined alleles of the seven genes (BF, EGF, ESR, FSHβ, H2AFZ, LEP, PRLR) related to prolif...eration that were and performed the survival analysis between breeds indicating the risk of culling and the time spent in production on the given farm. Based on the results of survival analysis by Log-rank test, Breslow (Generalized Wilcoxon) and Tarone-Ware test we concluded that they indicated a significant difference in case of the genes BF (Breslow and Tarone-Ware tests) the EGF (Log-rank and Tarone-Ware tests) and ESR (Log rank test) based on which the curves of the survival of the certain genes varied form one another significantly.

Show full abstract
Analysis of changes in resources and outputs of companies and partnerships in Hungarian agriculture
Published November 20, 2011

The aim of the study was to examine the achievement of Hungarian agricultural companies and partnerships, particularly agricultural co-operatives based on the aggregated database of National Tax and Customs Administration (NAV)1. From the methodological aspect, descriptive statistical methods and time series analysis were used. One of the most ...important conclusions is that the socio-economic weight of the agricultural co-operatives was strongly decreased in the period after the EU accession. The other important statement is that apart from the general examination of economic actors on aggregated level the comparative analysis of the single organizations forms would be needed. In the case of co-operatives, separated examination of the former type producer co-operatives and the so-called new type ones (e.g. marketing co-operatives etc.) would be necessary.

Show full abstract
Selenium speciation analysis of selenium-enriched food sprouts
Published March 11, 2014

In this present study, we prepared selenium-enriched pea and wheat sprouts. During our research we aimed not only to measure the total selenium content of the sprouts but to identify different selenium species.

Scientifical researches show why the analytical examination of different selenium (Se) species is necessary: consumption of all... kind of Se-species is useful for a person who suffers in selenium deficit, while there is significant difference between effects of different Se-species on person, in whose body the Se-level is just satisfactory. Biological availability, capitalization, accumulation, toxicity of Se-species are different, but the main difference was manifested in the anti-cancer effect of selenium.

During our research selenium was used in form of sodium selenite and sodium selenate, the concentration of the solutions used for germination was 10 mg dm-3. Control treatment meant germination in distilled water. Total selenium content of sprout samples was measured after microwave digestion by inductively coupled plasma mass spectrometry (ICP-MS). Different extraction solvents were applied during sample preparation in order to separate different Se-species (0.1 M and 0.2 M HCl or 10 mM citric acid buffer). We wanted the following question to be answered: Which extraction solvent resulted the best extraction efficiency? Selenium speciation analysis of sprout sample extracts was performed by high performance liquid chromatography with anion exchange column, detection of selenium species was performed by ICP-MS.

Evaluating our experimental results we have been found that significant amount of selenium of inorganic forms used during germination transformed into organic selenium compounds. There was difference between the amount of Se-species in pea and wheat sprouts and selenium uptake and repartition of selenium species were depended on Se-form used during germination. In addition the chromatogram analysis made us clear as well, that the citric acid solvent proved to be the most effective extraction solvent during sample preparation int he view of organic Se species.

Show full abstract
Analysis of the Station Test Results of the Hungarian Large White and Hungarian Landrace Populations Applying Survival Analysis
Published December 10, 2002

Authors analysed the days of fattening in relation to the station test for Hungarian Large White and Hungarian Landrace pig populations using, survival analysis. Survival and hazard functions were calculated in both groups separately for castrates and females. The log-rank test was applied to determine the significance of the differences across... the groups. Authors established that within the breeds the functions of the castrates and females were significantly different, namely the castrates reached final weight sooner or, in cases where final weight was not reached by a certain period, castrates reached this weight during the next time unit with a higher probability than the females.

Show full abstract
Quality analysis of the near-infrared spectra of wheat samples
Published July 31, 2012

The near infrared spectroscopy is widely used in the different industries as a rapid, non-invasive analitical tool. It is suitable for identification, qualification and quantitative analysis as well. As this technique is indirect, to make accurate calibration equations we need a proper sample population. Before the quantitaive analysis, calibiration modells we have to collect and examine the spectra. In our study we examined wheat samples with known origins to find if there is any effect of the growing area on the NIR spectra.

Show full abstract
Comparative analysis in residential property price level and price dynamics in urban and rural areas of Hajdú-Bihar County
Published April 8, 2014

In modern market economies residential real estate prices, price shifts and their correlations with macroeconomic factors are surveyed quite frequently. However, in contrast with the wide scope of foreign examples, so far existing analyses in Hungary have ignored examining relation and extensity of macroeconomic indicators and failed to examine... their effect on real estate pricing. The scope of this survey is to highlight these potential correlations and thus develop new aspects of analysis. Although the examination needs further extension both in time and space, the results of this survey may help to understand the importance of the responsible management of the most precious element of national wealth from the perspective of sustainable rural development.

Based on my preliminary results, there exists a strong correlation between the number of inhabitants of a settlement and the average real estate prices. Nevertheless, the correlation seems to be significant only for cities. In the case of smaller settlements the correlation still exists but at a lower level. As opposed to the results of former publications and my own expectations, no direct link could be tackled between the amount of income tax paid by private individuals and real estate prices either in the cities or in the villages within the territory and time span examined in my analysis. Although this correlation is measurable on a macro-economic level, my micro-regional analyses revealed the complexity of asset pricing and price volatility. Continuing this survey, my goal is to identify the hidden factors influencing real estate prices, whose thorough mapping may promote conscious rural development.

Show full abstract
Evaluation of IT-Investments
Published December 6, 2005

An informatical innovation is essentially a private business in the life of a venture but the ability of evolution and adaptability of ventures is remarkable for the national economy too. This is why it is important to observe the economical effects of IT investments. The introduction of an information system – as in the cases of other invest...ments – requires pre- and post-calculations for payback of fixed assest, thrift and profitability. The operation of an information system means not only one-off acquisition of instruments and intangible assets, but requires continuous development, version control and improvement of hardware in the sake of conservation. There is a high rate of depreciation of IT investments in Hungary, because such goods change too quickly, together with the economic environment. If the conservation of IT instrument value wanted one has to make new expansions continually. IT specialists have determined some indices, one of which is Total cost of Ownership, which is an important indicator for investment analysis. In practice, there are some other models and methods we can adopt in our analysis. In this paper, I collected several relevant and usable methods for pre analysis of IT projects. Management can adopt these models in his investment process to make sound decisions.

Show full abstract
Analysis methods of quality and traceability for honey
Published December 21, 2008

Honey is our essential food since ancient times. Thanks to the excellent dietetic and medical features, it has an important function in our nourishment. In Hungary about 25.000 tons of honey are produced each year. Most of the produce, about 80% is exported to different countries of the world. Hungarian types of honey have excellent quality. Th...rough exporting, the prestige and demand of Hungarian honey can be increased. In recent years the adulteration of honey caused many damages to producers and traders. The adulteration of honey is not easy to prove. Thereinafter, we represent several methods, such as oligosaccharide analysis or 13C/12C isotopic ratio analysis, which can identify the artificial substances of honey (for example: corn syrup, high fructose corn syrup) or can help to determine the ratio by which original honey can be identified. 

Show full abstract
Changes in Managerial Functions in Agriculture
Published September 15, 2003

Managerial activity is a process constituted by well separable functions, tasks. The functions and the content of managerial activity are influenced by several factors.
This multi-sided affectedness focused our attention on the analysis of management tasks. We aimed to formulate responses for the questions how and to what extent the and tasks of organizations define the tasks and functions at the given organization. On the basis of interview surveys, we analyzed the following managerial tasks: functions concerning information, communication, planning, decision-making, organization, control. The interviewed had to rank the factors influencing management tasks on a scale ranging from one to five. On the basis of the activities and tasks of organizations, we defined three types. The scope of this study does not allow us to publish all the results related to the above-mentioned managerial functions, so we can only present some, which are of interest.
Our findings suggest that the realization of certain management functions is influenced by several factors. Without striving for completeness, we could only evaluate 9-11 factors per function. The evaluation of information sources is considerably differentiated in terms of the activities, tasks of organizations. In the assessment of plans, the potentials for realization and repetition were judged differently, whereas non-organization changes and individual planning similarly. The findings of impact factors in decision making are largely different, as well in terms of organizational activities, but all the interviewed ranked the interests of the organization high. Analysis on control indicated that managers attributed higher importance to issues of content than to methodological ones.
Our investigations follow Fayol’s classical groups based on managerial tasks. We studied the following five tasks in the process of management: information tasks, planning, decision-making, instructions and control. We performed our studies with the inclusion of agricultural organization managers, with questionnaire surveys. The interviewed were asked to qualify the impact factors on the five investigated management tasks on a scale ranging from 1-5. We identified the following company groups: small company, medium company and large company.
We performed our analysis on the basis of company sizes as well, seeking to formulate responses on how size influences the qualification of the investigated factors.
Our findings suggest that the interviewed company managers attribute higher than average roles to the tasks of the management process. The qualification, ranking of management tasks are considerably influenced by company sizes. Relationships and venues are important in the implementation of information tasks, whereas the viability of plans is essential in the process of planning. Usefulness and company interests are highlighted in decision-making. In the case of instructions and decision-making, we stressed the significance of content elements as opposed to formal ones.

Show full abstract
The methodology of Event History analysis and its application in the quality control of raw milk
Published May 23, 2006

Event-history analysis is among the most frequently adopted mathematical methods, mainly due to the numerous types of models, available in the analysis. This method is also appropriate for analysing risk. Specifically, it has been employed in medical and animal-breeding science to manage risks. In this article, I give a presentation of the basi...c concepts, the basic types of models and their theoretical basis. I deal with the nonparametric Kaplan Meier and the parametric Cox proportional hazard model. The case study is also analysed with these methods. The results shows, that the 16-stall caroussel is the most effective facility from the viewpoint of quality. Milking into assay crucible (sample- cup) is more effective than to the floor after 16 decades.

Show full abstract
Identification of the Slovak traditional cheese “Parenica” microflora
Published September 5, 2018

Numerous studies have demonstrated the higher accuracy, faster time-to-results and lower costs provided by MALDI Biotyper systems compared to classical methods. In this study, the culturable population of total count of bacteria, enterococci, coliforms bacteria, lactic acid bacteria (LAB) and microscopic fungi and yeasts from cow’s dairy prod...ucts was identified using the MALDI-TOF MS Biotyper. Altogether, 50 samples of the Slovak cheese “Parenica” were examined. Total numbers of bacteria were cultured on Plate count agar at 37 °C for 24–48 h, aerobically; enterococci were cultured on Enterococcus selective agar at 37 °C for 24–48 h, aerobically; coliforms bacteria were cultured on Violet Red Bile lactose agar at 37 °C for 24–48 h, aerobically. The LAB were cultured on MRS (Main Rogosa agar), MSE and APT agar at 30 °C in microaerophilic conditions. The microscopic fungi and yeasts were cultured on Malt extract agar at 25 °C for 5 days, aerobically. Isolated strains (total 669) were subjected to identification by the MALDI-TOF MS. Among total count the identified bacteria mostly were Acinetobacter baumannii, Bacillus cereus, Micrococcus luteus and Staphylococcus warneri. Escherichia coli and Enterobacter cloacae were the most abundant coliform bacteria representatives identified. Coliform bacteria included Citrobacter, Hafnia and Klebsiella. Altogether three genera belonged to the LAB – Lactobacillus, Lactococcus and Leuconostoc were identified with Lactococcus lactis, Lactobacillus plantarum, Lactobacillus coryniformis, L. fructivorans and Leuconostoc mesenteroides were considered as the dominated LAB species in dairy products. Among yeasts, Kluyveromyces lactis, Candida zeylanoides and Yarrowia lipolytica were among the most isolated.

Show full abstract
Analysis of the Environmental Status of Nagykálló Subregion
Published December 6, 2005

The third smallest region of Szabolcs-Szatmár-Bereg county is the Nagykálló subregion. Its territory is 377 km2 and its inhabitants number 32.526. Due to the fact that industrial development arrived late, the environmental status of this subregion was saved from serious ecological degradation. The quality of the environment shows a reasonabl...e picture in many respects, comparing to the general survey of the country. The air quality of the region can be qualified as acceptable. Leaving some critical points out of consideration, it is better than the national average. It is favourable from the human environment point of view that the region is free of extremes, and has a balanced climate. The supply of drinking water is above 95%, and the remainsing water requirements are supplied by artesian wells. The water supply network is fully extended in the subregion. The most significant environmental noise source is traffic, including public road traffic, which causes a problem in the town of Nagykálló. The situation of the collection, transportation, and placement of the settlement’s solid wastes show a similar picture to the status of the country. The environmental status of the region is included in the SWOT analysis.

Show full abstract
Element content analyses in the Institute for Food Sciences, Quality Assurance and Microbiology
Published November 13, 2012

The role of chemical elements to ensure and promote our health is undisputed. Some of them are essential for plants, animals and human, others can cause diseases. The major source of mineral constituents is food, drinking water has a minor contribution to it, so the knowledge of elemental intake through food is crucial and needs continuous moni...toring and by this way it promotes the food quality assurance and dietetics.
With the evolution of spectroscopic methods increasingly lower concentrations could be determined, so the elemental composition of a sample could be more precisely and fully described. Due to the results the gathered knowledge up to the present is supported and new observations can be done helping us to understand such complex systems as biological organisms are.
The quality of a food is determined by the full process of its production, consequently it starts with agricultural production so elemental-analysis usually cover the whole soil – plant – (animal) – food chain, by this way the „Fork-to-Farm” precept is true in elemental analysis field also.
The history of elemental analysis in the University of Debrecen, Centre for Agricultural and Applied Economic Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Food Processing, Quality Assurance and Microbiology goes back to 1980s when the so called Regional Measurement Central gave the background for research. The continuous deployment resulted in an obtain of an inductively coupled plasma atomic emission spectrometer (ICP-AES) in 1988, which extended the scope of examinations due to its excellent performance characteristics
compared to flame atom absorption (FAAS) and flame emission spectrometers (FES). The instrumental park retain up to date correlate to the developing analytical techniques due to acquiring a newer ICPAES in 1998 and an inductively coupled plasma mass spectrometer in 2004 – which sensitivity is three order of magnitude better compared to ICP-AES. The Institute supports the work with its own ICP-AES and ICP-MS since 2011. 

Show full abstract
Application of semen evaluation techniques
Published April 23, 2014

Laboratory methods of semen evaluation are used to select males for artificial insemination. The current review describes several techniques that have been recently used for sperm analysis. Conventional microscopic methods in combination with the objective computerassisted sperm motility and morphology analyzers and flow cytometry, allows to ob...tain more precise information about the membrane and functional status of spermatozoa. By using several methods to detect motility, viability, acrosomal and capacitation status besides DNA integrity sperm biology and some of the mechanism involved in sperm cry injury can be better understood. The number of possible targets related to sperm quality is increasing, and possible that some of them could enable sperm analysis for predicting freezability and fertility to be improved.

Show full abstract
Survival analysis of sow longevity and lifetime reproductive performance – Review
Published October 24, 2016

Sow longevity plays an important role in economically efficient piglet production. Improving sow longevity results increase in the productivity and profitability of a sow herd. Longevity is a complex trait with many factors that can contribute to a sow having a long and productive life. Not only the sow’s genetics, but also nutrition, environ...ment and the management policies are important. In addition, the removal of non-productive sows along with the introduction of replacement gilts is an essential part of maintaining herd productivity at a constantly high level. The objective of this paper was to summarize the current knowledge about the sow longevity and lifetime performance values, as well as, discusses the survival analysis methods for sow longevity traits. This method can estimate the hazard rate indicating proportional risk of sows being culled at any given time, in addition, it is able to investigate the effects of different factors on longevity. Identifying factors that influence the longevity could assist many commercial pig producers in becoming more efficient.

Show full abstract
The Effect of Fertilization and Irrigation on Maize(Zea mays L.) Production
Published September 15, 2003

In a long-term field experiment set up at the Látókép experimental station of the Center of Agricultural Sciences of Debrecen University, the data of the last five years (1995-1999) were analyzed to determine the crop production factors with the greatest influence on maize production and the relationship and interactions between irrigation a...nd fertilization.
In the extremely dry year of 1995, fertilization was found to cause substantial yield depression in the absence of irrigation. According to results of analysis of variance, fertilization significantly reduced the maize yield by 40-90% compared to control plots. Under irrigated conditions, there was a considerable increase in the maize yield, the yield surplus being 4.4-9.4 t ha-1, depending on the nutrient supply level.
During the period from 1996-1999, when rainfall conditions were favorable for maize, fertilization significantly increased the maize yield even without irrigation over the average of the four years. The yield surplus due to fertilization was 3.9-4.6 t ha-1, depending on the fertilization rates. The maximum yield surplus was obtained on plots fertilized with 120 N kg ha-1, while at the rate of 240 N kg ha-1 the maize yield did not differ significantly from this value. During the period examined, corn yield was significantly higher at all three nutrient supply levels as the result of irrigation than in the non-irrigated treatment. As in the case of non-irrigated conditions, the highest fertilizer dose did not result in a substantial yield increase. An analysis of the interaction between fertilization and irrigation indicated that the yield-increasing effect of fertilization was not significantly different under irrigated and non-irrigated conditions. The significant year x irrigation interaction was confirmed by the fact that the yield surplus (1.3-2.3 t ha-1) differed greatly from the irrigation effect recorded in 1995.

Show full abstract
Comparison of RAPD and AFLP Analysis in Some Maize (Zea mays L.) Lines and Hybrids
Published October 11, 2006

The use of molecular markers to enhance plant breeding efforts is being widely studied. DNA-based fingerprinting technologies (RAPD and AFLP) have proven useful in genetic similarity studies. We estimated different maize (Zea mays L.) inbred lines and hybrids originated from mutant ones based on their genetic differences.
We carried out RAPD... analysis with different primers and the 707 (CCCAACACCC) and 792 (CAACCCACAC) primers with 50% similarities provided quite good DNA fragments. By applying the DNA based-AFLP technique, we had very dense DNA fingerprinting. We differentiated 15-32 polymorphic bands, the highest number of bands were found in P-T/H-CA (32). AFLP seems to be the more efficient method of comparing genetic similarities/differences among different genotypes.

Show full abstract
Analysis of the Hungarian National Action Plan for Employment in the Framework of RuralJobs International Project
Published June 5, 2009

Employment and creation of new jobs getting more and more attention both on national and on European level. The examination of this topic is especially important in rural areas of
Europe. There were several European and national researches dealing with this question, and there are new upcoming works which try to find solutions for citizents decrease unemployment in rural areas. The RuralJobs, EU Framework 7. project presented in the paper is one of these researches. After a short introduction of RuralJobs and the task under workpackage two of the research, which analysis strategies, policies and programmes from the aspect of rural jobs, one of the documents reviewed under this task, the Hungarian National Action Plan for Employment is presented, in line with the most important stages of the EU’s
employment policy.

Show full abstract
Determination of the validation parameters of inductively coupled plasma mass spectrometer (iCP-mS): response curve linearity in the case of arsenic and selenium
Published July 31, 2012

In the field of elemental analysis inductively coupled plasma mass spectrometers (ICP-MS) have the best sensitivity that means the lowest limit of detection, subsequently their applicability for the detection of essential and toxic elements in foods and foodstuffs is prominent. For the most elements could be measured the detection limit is betw...een μg kg-1 (ppb) and ng kg-1 (ppt) e.g. for arsenic and selenium.

Considering an analytical task (sample type, analytes and their concentration, pretreatment procedure etc.) the applicability of an analytical method is determined by its performance characteristics. The purpose of validation is to ensure that the method would be used fulfills the requirements of the given task. In this article we describes one of the performance characteristics, the linearity, and the whole validation procedure aims measurement of arsenic and selenium in foodstuffs by inductively coupled plasma mass spectrometer (Thermo XSeries I.); but because of the limited number of pages the results are demonstrated only for arsenic.

The linearity of calibration was evaluated in three concentration ranges (0.1–1 μg l-1; 1–10 μg l-1; 10–50 μg l-1), with nine line-fit possibilities (without weighting, weighting with absolute or relative deviation; with or without forcing the curve through blank or origin) and different methods (graphical examination, correlation coefficient, analysis of variance).

The best method to ensure the linearity of correspondence between signal and concentration was the ANOVA test. In view of calibrations it was found that the range of 10–50 μg l-1 could be regarded as linear with four line-fit possibilities, and was non-linear between 0.1–1 μg l-1 and 1–10 μg l-1.

Show full abstract
26 - 50 of 323 items
<< < 1 2 3 4 5 6 7 8 9 10 > >>