310 research outputs found
Corporate governance in modern Russia: axiological resources and their development
The paper offers a way to optimize corporate governance basing on the axiological resources that serve as guidelines for social and professional activitie
Relationship between somatic cell count in goat milk and mature Kashkaval cheese parameters
Received: February 1st, 2021 ; Accepted: March 28th, 2021 ; Published: April 16th, 2021 ; Correspondence: [email protected] is challenging to ensure Kashkaval cheese consistent quality during the production
process which is directly correlated to the somatic cell count (SCC) and bacterial presence. This
is one of the most popular and widely discussed topic areas in the dairy industry. SCC is used to
limit the inflammatory process and to predict the health status of the animal’s mammary glands.
The objective of this study was to evaluate the quality characteristics of mature Kashkaval cheese
was produced from goat milk with different SCC (below 1,200 thous cells mL-1
- group I (low),
above 1,750 thous cells mL-1
- group II (high) and up to 1,600 thous cells mL-1
- group III
(medium)) and samples were evaluated on the 1st and 60th day of ripening by chemical,
microbiological and sensory profile. The results showed a significant relation (P < 0.05) between
the levels of SCC and Kashkaval cheese water content during ripening. For all analysed samples,
the total lactic acid bacterial count was the highest between the 15th and 45th day of ripening and
reached values up to 6.0 log cfu g
-1
. Pathogenic microorganisms (Listeria monocytogenes,
Coagulase-positive staphylococci) and coliforms were not detected. The highest number of
psychrotrophic microorganisms was observed in Kashkaval samples with high SCC. The sensory
evaluation revealed a higher score for cheese samples with low and medium SCC in comparison
to the cheese sample with a high SCC
Modeling of the integrated interaction of the innovation process subjects
Within the scope of the presented article, the category "integration" is used as development process, leading to a new type of innovative process subject interaction with the purpose of growth in competitiveness, uncertainty reduction of innovative product commercialization, cost reductionyesBelgorod State Universit
The using of orthogonal basis for the steganographic coding of information in multimedia
This article discusses methods for steganographic encoding additional information using three different orthogonal bases. The bases are represented by the functions, which occupies a different bandwidth in the spectrum. There are comparison of the approach to the definition of DCT- coefficients with the approaches used in the methods of the spread spectrum and subband projections. The approaches of the coefficients of the implementation to ensure secrecy by adaptive determination of their value are considere
Benchmarking methodologies used for comparative analysis of scientific and educational systems on the example of central and Eastern European countries
The article basing on the known methodologies of territorial benchmarking (EIS-, GCI-and KA-methodologies), there has been built a series of education, research and innovation scoreboards for Central and Eastern European countries, using simulation calculationsyesBelgorod State Universit
Probability of erroneous reception of navigational radio signals under ionospheric disturbances
The work deals with the issues of the determination of the probability of frequency-selective fading (FSF) of navigational radio signals in satellite radio navigation systems under artificial ionosphere disturbances. The connection between the coherence band of the trans-ionospheric channel and the conditional size of ionospheric inhomogeneities is established. Based on the results of computer simulation, the threshold values of the Mean square deviation (MSD) of fluctuations of the total electron content in the inclined radio-line are determined, in which the probability of frequency-selective fading is hig
Equity in community health insurance schemes: evidence and lessons from Armenia
Introduction Community health insurance (CHI) schemes are growing in importance in low-income settings, where health systems based on user fees have resulted in significant barriers to care for the poorest members of communities. They increase revenue, access and financial protection, but concerns have been expressed about the equity of such schemes and their ability to reach the poorest. Few programmes routinely evaluate equity impacts, even though this is usually a key objective. This lack of evidence is related to the difficulties in collecting reliable data on utilization and socio-economic status. This paper describes the findings of an evaluation of the equity of Oxfam's CHI schemes in rural Armenia
Methodological aspects of assessing regional publication activity and citations: the case of the RF central federal District Universities
The article focuses on calculations to assess contribution made by University publication activity and citations indicators to the regional integral indicator of publication activity and citations for Voronezh Region, Ivanovo Region, and Ryazan Region. It shows that relative indicators are more significant in calculations of this kind therefore regions with a large number of Universities have no advantage. The article offers a triangular matrix of ratios expressing how much one regional integral indicator of publication activity and citations exceeds the other, which was calculated for the RF Central Federal District regions. Ratios range up to 3.47. It is concluded that the offered triangular matrix of ratios can be useful for arbitrary rankings of items by values of some indicator.Key words: publication activity, citations, regional integral indicator of publication activity and citations, RSCI, RF Central Federal District, a triangular matrix of ratios for arbitrary rankings
Estimation of Innovative Activity of the University
On the basis of Belgorod region innovation activity analysis, positive relationship between shipped innovation items and domestic research and development costs was found. Semantic differential was used for multiple estimation of BelSU innovation activity and competiveness. BelSU integrated index showed high-enough innovation activity of this universityyesBelgorod State Universit
LC-MS analysis of phenolic compounds and oleraceins in aerial parts of Portulaca oleracea L.
Portulaca oleracea L. (purslane) is a well-known edible and ethnomedicinal plant and it has been called “vegetable for long life” in the Chinese herbal medicine. The plant is recognized for the high content of polyphenols, including flavonoids and phenolic acids.In this study, hydromethanolic purslane extracts from Bulgarian and Greek locations were screened for polyphenolic content. Based on polyphenols, saponins and DPPH antioxidant activity, an orthogonaldesign L9(34) was performed in order to improve the ultrasound assisted extraction procedure of dry and fresh plant material. An UHPLC-Orbitrap-MS method in parallel-reaction monitoring mode was developed for the simultaneous identification and quantification of 14 compounds comprising hydroxybenzoic, hydroxycinnamic and caffeoylquinic acids, as well as 2 flavonol glycosides. The quantitative analysis was validated for curve fit, range, instrumental detection limit (IDL), instrumental quantification limit (IQL), LOD, LOQ, precision, recovery and accuracy. The UHPLC-MS quantification method revealed good linearity (r2 > 0.9950), LOD < 925.85 ng/g dw and LOQ < 3055.31 ng/g dw. Moreover, 11 cylco-dopa amides (Oleraceins A-D, N-Q, S, U and W) were tentatively identified through UHPLC-MS and their MS2 mass fragmentation was described
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