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Search Results: 1 - 10 of 7453 matches for " Marta NAJDA-JANOSZKA "
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Scientific Annals of the Alexandru Ioan Cuza University of Iasi : Economic Sciences Series , 2011,
Abstract: This article presents an analysis of the impact of virtualization process on competitiveness of small and medium sized firms. The developed methodology for measuring the level of organizational virtualness has been effectively applied to a wide range of businesses, both large and the smallest companies representing traditional and high-technology sectors. Through statistical analysis it has been confirmed that virtualization process has a positive impact on competitiveness of companies. However, not all theoretically assumed pathways of such impact have been observed. Presented results and conclusions of the examination give a new perspective for discussion about challenges of effective implementing virtual organization concept into business practice.
Slaveno-Serbian language: Between simplicity and perfection
Ivanova Najda
Ju?noslovenski Filolog , 2010, DOI: 10.2298/jfi1066255i
Abstract: In the studies on Slaveno-Serbian period of the history of Serbian literary language one discrepancy is examined. The latter refers to the key role of the aforementioned period for the integration of Serbian society to the values of rationalism and Enlightment and the imposed negative stereotypes of Slaveno Serbian written praxis as deprived of norm and codification respectively. As long as this hybrid type of literary language derives under the predominant influence of extra linguistic factors, it cannot be investigated neither from the perspective of contemporary views on unification and stability of literary norm, nor by implementing methods of historical dialectology and historical grammar. In the recent paper the regulating role of stylistic conventions of the period in question in using language elements of different origin is emphasized. Then, the necessity of examining discoursively determined selective position of the writers on language and literature development as well as on sociocultural processes in Serbian society are outlined.
Content of phenolic compounds and antioxidant properties of fruits of selected orchard shrub species
Agnieszka Najda,Helena ?abuda
Modern Phytomorphology , 2013,
Abstract: The study involved fruits of eight common orchard shrub species: black currant (Ribes nigrumL.) cv. ‘Titania’, red currant (Ribes rubrumL.) cv. ‘Heros’, white currants (Ribes gracile Michx.) cv. ‘Blanca’, chokeberry (Aronia melanocarpa Michx. Elliott) cv. ‘Nero’, red chokeberry (Aronia arbutifolia L. Pers) cv. ‘Brilliant’, raspberry (Rubus idaeusL.) cv. ‘Polana’, blackberry (Rubus fruticosusL.) cv. ‘Polar’, and highbush blueberry (Vaccinium corymbosumL.) cv. ‘Bluecrop’. The fresh fruits were subject to determinations of total polyphenols content recalculated onto gallic acid, anthocyanins, and flavonoids. In addition, parameters of antioxidant activity in raw materials were determined using three methods: DPPH, ABTS, and FRAP. High concentrations of total polyphenols and anthocyanins, as well as antioxidant activity were recorded for extracts from chokeberry fruits (respectively 1540.01 mg 100 g -1 and 498.98 mg 100 g -1 , 199.4 μM TE g -1 FM DPPH and 112.5 μM TE g -1 FM FRAP). Regardless of the species, analyzed fruits are an abundant source of antioxidant compounds.
Morphological and chemical characteristics of fruits of selected Rosa sp.
Agnieszka Najda,Halina Buczkowska
Modern Phytomorphology , 2013,
Abstract: The aim of this study was to evaluate the morphological and chemical parameters, antioxidant activity (DPPH) of five rose species (Rosa rugosa, R. villosa, R. californica, R. spinosissima, and R. × damascene) and grouping them according to the harvest date. On the basis of the study, rose species grown in eastern Poland were grouped according to their harvest time, and three dates of cumulative ripeness of pseudofruits were distinguished. Rosehips of studied species varied referring to their harvest date and morphological properties and were characterized by diverse contents of primary metabolites analyzed. In addition, obtained extracts showed high antioxidant activity, which has a significant impact on their value for processing.
Chemical variability and antioxidant activity of the leaves of chosen highbush blueberry (Vaccinium corymbosum L.) cultivars
Ma?gorzata Janiuk,Agnieszka Najda,Magdalena Gantner,Marzena?B?a?ewicz-Wo?niak
Modern Phytomorphology , 2013,
Abstract: The paper deals with the chemical composition and antioxidant activity of aqueous extracts from leaves of two highbush blueberry varieties: ‘Bluecrop’ and ‘Northland’. The study revealed differences in the content of the analyzed components. Leaves of cv. ‘Bluecrop’ were characterized by a higher content of chlorophyll, flavonoids and anthocyanins, while the leaves of cv. ‘Northland’ contained more reducing sugars and total phenolic acids, tannins, and essential oils. Capacity of neutralizing the free radicals (DPPH) in leaves of both tested cultivars was found at comparable levels.
Investigation of the Role of Electrogenerated N-Heterocyclic Carbene in the Staudinger Synthesis in Ionic Liquid  [PDF]
Marta Feroci
International Journal of Organic Chemistry (IJOC) , 2011, DOI: 10.4236/ijoc.2011.14028
Abstract: Electrogenerated N-heterocyclic carbene (NHC), obtained by cathodic reduction of Bmim-BF4, behaves as organocatalyst and base in the Staudinger synthesis from an acyl chloride and a deactivated imine in ionic liquid to yield ?-lactams. The effect of many parameters (temperature, amount of electricity, substituents, presence of an external base) has been evaluated and a tentative mechanism for the Staudinger synthesis in a very polar medium like the ionic liquid reported. The yields of isolated ?-lactams are good, starting from non-electrophilic imines, and predominantly trans lactams are obtained with a good diastereomeric ratio.
Haptic memory and forgetting: a systematic review Memória háptica e esquecimento: uma revis o sistemática
Maria José Nunes Gadelha,Jandilson Avelino da Silva,Michael Jackson Oliveira de Andrade,Débora Najda de Medeiros Viana
Estudos de Psicologia (Natal) , 2013,
Abstract: Memory is a multiple system composed of encoding, storage and retrieval of information subsystems. The memory tactile, haptic memory submodality is connected to haptic perception; it concerns the active manipulation of objects. This study is a systematic review related to forgetting occurred in haptic memory. Articles was sought in electronic databases PsycINFO, PubMed, and Web of Science, using the keywords "haptic memory", "touch memory", "tactile memory", "tactual memory" separately, and then combined with the word "forgetting". These words were identified in 1655 publications. But lastly, six articles published between 2002 and 2012 were selected by a set of inclusion criteria. Largely referred to studies that used behavioral methods recognition procedures, and using real objects. However, the types of memory test used and the number of objects and the time interval between sessions of study and test had great variation. A memória é um sistema múltiplo constituído por subsistemas de codifica o, armazenamento e recupera o de informa es. A memória tátil relaciona submodalidades da memória e percep o háptica e se trata da manipula o ativa dos objetos. Este estudo trata-se de uma revis o sistemática sobre o esquecimento ocorrido na memória háptica. Buscou-se nas bases de dados eletr nicas PsycINFO, PubMed, e Web of Science, utilizando as palavras-chave "haptic memory", "touch memory", "tactile memory", "tactual memory" de forma separada, e posteriormente combinadas com a palavra "forgetting". Essas palavras foram identificadas em 1.655 publica es, das quais foram selecionados por um conjunto de critérios de inclus o, seis artigos publicados entre 2002 e 2012. Grande parte dos estudos remeteu-se a métodos comportamentais sobre o reconhecimento de objetos reais. Contudo, os tipos de teste de memória utilizados, bem como o número de objetos e o intervalo de tempo entre as sess es de teste tiveram grande varia o.
Some Remarks on Application of Sandwich Methods in the Minimum Cost Flow Problem  [PDF]
Marta Kostrzewska, Leslaw Socha
American Journal of Operations Research (AJOR) , 2012, DOI: 10.4236/ajor.2012.21003
Abstract: In this paper, two new sandwich algorithms for the convex curve approximation are introduced. The proofs of the linear convergence property of the first method and the quadratic convergence property of the second method are given. The methods are applied to approximate the efficient frontier of the stochastic minimum cost flow problem with the moment bicriterion. Two numerical examples including the comparison of the proposed algorithms with two other literature derivative free methods are given.
Patterns of Interpersonal Coordination in Rugby Union: Analysis of Collective Behaviours in a Match Situation  [PDF]
Marta Rodrigues, Pedro Passos
Advances in Physical Education (APE) , 2013, DOI: 10.4236/ape.2013.34034
Abstract: This study aims to analyze how intra-team coordination patterns in the team sport of rugby union influenced successful performance. We hypothesized that high interpersonal coordination patterns are a crucial issue to cross (or not) the gain line. Video record and digitizing procedures were used as a method to collect data for further analysis of interpersonal coordination patterns that took place during the formation of subunits of attack. The results showed the existence of three types of outputs, which differ depending on the correlations between attackers and defenders. Therefore, for high and positive values of interpersonal coordination (r values between 0.8 < r < 1), there are possibilities of action that lead to success when the opponents have inverse or lower values of correlation. The conclusion was that interpersonal coordination within subunits becomes a relevant factor in analyzing the success in each game situation.
Fractal Dimension in Animal Model of Alzheimer’s Dementia  [PDF]
Ljiljana Marta, Slobodan Sekuli?
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.89031
Abstract: The aim of this study was to qualitatively described effect of the oxidative stress, neurotransmission change and the neurodegeneration in animal model of chronic intoxication by aluminum. Electrocortical brain activity of animal model of stress and neurodegeneration is comparable with Alzheimer’s Dementia (AD). We used adult animals, during 6 weeks intraperitoneally treated with aluminum. Both animals and patients with Alzheimer’s Dementia have increased relative spectral power in delta range. By fractal analysis we described changes in electrocortical activity of aluminum intoxication animals compare to physiological control. We used change in delta range to calculate fractal dimension for the pathophysiological state of disease. We evaluate effect of stress and neurodegeneration, oxidative stress and accumulation of beta amyloid and neurofibrillary tangles as change in fractal dimension (FD). We conclude that change in fractal dimension could be used for prognosis of AD. Results show that decrease in fractal dimension could be used for evaluation of changes in neural activity in occurrence of AD.
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