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Морфологічні особливості насіння деяких раритетних видів родини Brassicaceae Burnett
Get PDFObjective – to study additional representative carpological characteristics for identification of the Brassicaceae family species.
Material and methods. Mature seeds of 9 rare Brassicaceae species from the collection of the seed laboratory are collected in the Natural Flora Department of M.M. Gryshko National Botanical Garden of the NAS of Ukraine and obtained under the scientific seed exchange program. The carpological characteristics were investigated using Stemi-2000 C light microscope and the Axio Vision program.
Results. The revealed speciesspecific morphological characteristics can be used as diagnostic criteria: seed form; presence of fringe; fringe peculiarities and its transparency; radicle length and position of radicle and cotyledons, exotesta surface relief.
Conclusions. The carpological characteristics can be used as reliable additional criteria for the identification of the some rare species of the Brassicaceae family. Proper identification will be helpful for the rare species protection practice
Особливості вегетативного розмноження деревних ліан родини Vitaceae Juss. в умовах інтродукції в Правобережному Лісостепу України
No full textObjective — to investigate the effect of the growth-regulating drug “Kornevin” on the rooting and rhizogenesis of the semi lignified cuttings of wood vines of the genera Ampelopsis Michx. and Parthenocissus Planch. Vitaceae family in condition of introduction in Right-Bank of Forest-Steppe of Ukraine, identify the optimal timing of the summer trimming. Using a patented utility model, improve the technology of summer planting of the studied taxa.
Material and methods. The effect of drug “Kornevin” on the rooting rate and rhizogenesis of semi-lignified cuttings was investigated according to the method of vegetative propagation of plants using growth stimulants by R.Kh. Turetskaya and F.Ya. Polikarpova (1968). To determine the period when the ability of semi-lignified cuttings to form adventitious roots is the highest, cuttings were carried out once a decade, starting from the third decade of June to the third decade of July, and for P. tricuspidata ‘Veitchii’ – until the first decade of August inclusive, using the recommendations on the propagation of fruit and berry crops with green cuttings by F.Ya. Polikarpova (1990). Phenological phases were registered by the method of phenological observations in the botanical gardens of the USSR (1975). The technology of summer cuttings of plants of the taxa under study was improved using the utility model patent “The method of thermostress stimulation of root formation of stem cuttings for accelerated reproduction of ornamental tree-shrub deciduous plants” by I.I. Korshikov et al. (2009).
Results. The application of drug “Kornevin” at a concentration of 1 and 2 g/l led to an increase in rooting and an increase in the number of adventitious roots of semi lignified cuttings. The use of a solution of the preparation at a concentration of 5 g/l resulted in an inhibitory effect. An increase in the concentration of the growth-regulating drug in the solution resulted in a decrease in the average length of adventitious roots in the cuttings. The highest percentage of rooting of semi-lignified cuttings was detected during the onset of the phenological phase of fruit fastening. The effect of the cold stressor had a positive effect on the rooting and rhizogenesis of semi-lignified cuttings.
Conclusions. The optimum for stimulation of rooting, as well as the increase in the number of adventitious roots of the semi-lignified cuttings of the woody vines of Vitaceae family, is the concentration of growth-regulating preparation “Kornevin” in aqueous solution, which is 2 g/l. The most favorable period for summer cuttings coincides with the phenological phase of fruit fastening. The effect of a cold stressor has a positive effect on the rooting and rhizogenesis of semi-lignified cuttings
Вміст фенольних сполук у рослинній сировині Cichorium intybus L., Lamium purpureum L. та Viscum album l.
No full textObjective – to evaluate the antioxidant potential of ethanol extracts of wild selected plants in conditions of M.M. Gryshko National Botanical Garden of the NAS of Ukraine through the determination of phenolic compounds.
Material and methods. In this study used dried raw of Cichorium intybus L., Lamium purpureum L. and Viscum album L. Plants of C. intybus and L. purpureum harvested from natural flora of the M.M. Gryshko National Botanical Garden of the NAS of Ukraine. V. album collected from crown trees of Tilia cordata Mill. 0.2 g of dried plant raw material was extracted with 20 mL of 80 % ethanol for 2 hours. The total polyphenol content of extracts was measured by the method described by Singleton and Rossi (1965) using Folin-Chiocalteu reagent and results were expressed in mg of gallic acid equivalent per one gram of dry matter (mg GAE/g). Determination of total flavonoids content was conducted using the modified method described in Shafii et al. (2017) and results expressed in mg quercetin equivalent per one gram of dry matter (mg QE/g). Detection of total phenolic acids content of extracts was carried out using the method described in Farmakopea Polska (1999) and results expressed in mg caffeic acid per one gram of dry matter (mg CAE/g). The antioxidant activity of samples was measured using 2.2-diphenyl-1-picrylhydrazyl (DPPH method) according to Sanchez-Moreno et al. (1998). Also, the antioxidant activity of extracts was determined by the phospho-molybdenum method described by Prieto et al. (1999) with slight modifications. Results of these parameters expressed in mg Trolox equivalent per one gram of dry matter (mg TE/g). Experimental data were evaluated by using Excel 2010. Correlation analysis performed using Pearson’s criterion.
Results. The total content of polyphenol compounds for C. intybus, L. purpureum and V. album was 33.91, 34.61 and 31.28 mg GAE/g, respectively, the total content of flavonoids for C. intybus, L. purpureum and V. album – 26.29, 28.89 and 25.10 mg QE/g, the total content of phenolic acids – 4.56, 4.87 and 4.07 mg CAE/g, antioxidant activity of extracts by DPPH method was 8.35, 7.66 and 8.55 mg Trolox Equivalent/g, respectively, antioxidant activity by phosphomolybdenum method – 93.01, 142.62 and 9.31 mg Trolox Equivalent/g. Between the accumulation of polyphenol compounds and antioxidant activity of extracts found a strong positive correlation.
Conclusions. Wild plants of C. intybus, L. purpureum and V. album in M.M. Gryshko National Botanical Garden of the NAS of Ukraine accumulated polyphenol compounds with high antioxidant activity. Obtained data demonstrated that these plant species can be a potential source of natural antioxidants that can be used in the different pharmacological investigations. It is important to a branch of biological science to investigate biochemical properties of not cultivated plants only but wild plants also to identify new sources of biologically active compounds
Method of information and analytical support for information security risk management of information systems
No full textIt has been tried to combine expert and statistics methods in analyzing information security risk. Author has brought general statements of information security risk management based on international and internal practices as well as proposed own risk analyzing process. The proposed method includes topologies of information resources, vulnarabilities, threats, impact, bulding events’ tree. It has been proposed to build agrigated risk over the certain information resource. Author has tried to convert experts’ metrixes into fuzzy mathematical model. Conclusion of the experiments is that self-learning model gives better results but in the environment of uncertaince, both experts’ and statistics data can be used.Problems in programming 2018; 4: 82-9
Creation model of threat and violations information for test object using ontology testing integrated information security system (IISS)
No full textPrombles in programming 2014; 4: 48-5
Development of Web-prototype for analysis of statements in social network Twitter
No full textThis article describes a software prototype for statistical analysis of expression in social networks with previous filtration of non-information expressions, selection of characteristic words, naive Bayesian classifier for providing analysis of user statements
About applicability of NATO logistics information systems in Ukraine
No full textThe problem of implementation of Logistics information system (IS) for Ukrainian Armed Forces (UAF), which meets NATO standards, is considered. Analysis of existing NATO logistics information systems and their applicability in Ukraine is performed. Science-intensive issues of logistics IS implementation are identified. The necessity of development of national mathematical support (models, methods, algorithms) of decision-making support in UAF logistics is defined. The application reasonability and feasibility of automation technology approaches of discrete technological and information processes control for decision-making support in logistics is substantiated.Problems in programming 2018; 4: 101-11
Big data platforms. Main objectives, features and advantages
No full textThis paper presents an overview of existing big data platforms. The goal is to identify the main problems and solutions that exist in this area, as well as the properties of the big data platforms that determine their capabilities, advantages or weaknesses in solving these problems. The relevance of the topic is due to the rapid evaluation of mobile devices and application systems, the corresponding increase in the volume of information and the inability of traditional systems to process such amounts of data in a reasonable time. That is, it is an information technology platform enterprise class that provides the properties and functionality of an application in one solution for developing, deploying, processing and managing big data. The goal of creating and using such platforms is to improve the scalability, availability, performance, and security of organizations working with big data. Big data platforms enable to process multi-structured data in real time and allow different users to use them for various tasks related to using big data. The paper discusses frameworks developed for solving big data problems, analyzes their characteristics, operating principles and capabilities in the context of the problems they are able to solve, it also identifies existing “gaps” and directions for further development. Solving the problems of big data, namely ensuring the effective storage, processing and analysis of data, will make information more useful, and companies that work with big data more competitive.Problems in programming 2019; 3: 101-11
Use of ontological knowledge in machine learning methods for intelligent analysis of Big Data
No full textThe paper discusses problems related to the processing of Big Data in order to acquire implicit knowledge from them. Machine learning (ML) methods oriented on these tasks can be combined with elements of the Semantic Web technologies and Artificial Intelligence (AI), which deals with intelligent behavior, learning and adaptation in computational systems. We analyse challenges and opportunities background knowledge using to improve ML results, the role of ontologies and other resources of domain knowledge. Domain knowledge could improve the quality of ML results by using reasoning techniques to select learning models and prepare the training and test data. We propose some examples demonstrated the use of ontologies and semantic Wiki markup for improving the efficiency of machine learning are considered deal with functional posibilities of the portal version of the Great Ukrainian Encyclopedia. Ontological model of this informational resource is considered as a domain knowledge base. Groupping of examples is based on high-level ontological classes, and semantic properties and their relations are used for construction of space of attributes.Problems in programming 2018; 4: 69-81
Use of ontologies for search and navigation improvement in the online version of the "Great ukrainian encyclopedia"
No full textThe aim of the work is to analyze the means of semantic search in Wiki resources and to develop directions for expanding its capabilities through the use of modern tools of knowledge management. The article analyzes the benefits that the use of semantic markup of the Web information resources provides for users by more convenient and quick access to content. The techniques of application of ontological analysis for search and navigation in semantized Wiki resources are considered. The definition of Wiki ontology that formalizes the information about the structure of the knowledge base of information resource (both ordinary and semantized) based on Wiki technology is proposed. The theoretical foundations of determining the measure of semantic similarity between domain concepts based on ontologies and taxonomies are analyzed. Methods of design of navigation tools oriented on Wiki resources are proposed. These methods are based on retrieval of pages that use semantically related concepts. The implementation of the proposed approach in the online version of the Great Ukrainian Encyclopedia (e-VUE) is described. Such approach supports an extension of the functionality of the encyclopedic resource by providing means of access to content on a semantic level. The methodological principles of the organization of the e-VUE knowledge base and the categorization of its articles that ensure the use of semantic proximity estimations between domain concepts for discovery of such concepts are substantiated. Problems in programming 2019; 4: 11-2