19 research outputs found

    Dual Boundary Conditions in 3d SCFT's

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    We propose matching pairs of half-BPS boundary conditions related by IR dualities of 3d N=2\mathcal{N}=2 gauge theories. From these matching pairs we construct duality interfaces. We test our proposals by anomaly matching and the computation of supersymmetric indices. Examples include basic abelian dualities, level-rank dualities, and Aharony dualities.Comment: 99 pages, 3 figures. v2: minor edits, appendix on Weyl-Kac formula adde

    Investigation of S-incompatibility breakdown in 'Karina' sweet cherry

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    The paper presents results of a two-year study of self-(in)compatibility in 'Karina', previously reported as a self-incompatible sweet cherry cultivar. After emasculation and bagging, pistils of 'Karina' were selfed and pollinated with the nominally cross-incompatible cultivars 'Germersdorfer 1' and 'Lambert' at the beginning of full flowering. In the same way, the pollen of 'Karina' was used to pollinate 'Germersdorfer 1' and 'Lambert'. PCR analysis to determine S-genotypes of 'Karina', 'Germersdorfer 1' and 'Lambert' using consensus and allele-specific primers for S-RNase resulted in patterns consistent with S3S4 genotype. After selfing, 'Karina' behaved as self-compatible, since its pollen tubes reached the base of the style and ovary, penetrating the nucellus and fruit set was recorded in both years. Pollen tubes penetrating the nucellus and fruit set were also recorded after pollination with 'Germersdorfer 1' and 'Lambert'. In contrast, 'Germersdorfer 1' and 'Lambert' did not set any fruit when pollinated with 'Karina'. Microscopic observation showed pollen tubes ending the growth in the upper and middle third of the style. The behaviour of 'Karina' after selfing, as well as its behaviour as the pollen donor/recipient in pollination with cultivars of the same S-allele constitution requires further molecular and genetic analysis

    Socially-Responsible Operations and Redesign of Health Care Institutions

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    Corporate social responsibility is gaining increasing importance in our region, representing the business model of the European market. Necessary to redesign the economic and non-economic enterprises in order to form the conscience of all business entities in the system moving along with the fundamental tendency of the state in obtaining membership in the European Union. Instruments, are included in the realization of knowledge capital to create mechanisms responsible society and relations between unparedjenja subjektia in the health care system. One of the instruments investigated social responsibility is emotional intelligence. Without adequate human resources with all their rights in employment, there is no introduction and application of CSR principles

    Morphology and viscoelastic properties of sealing materials based on EPDM rubber

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    In this applicative study, the ratio of active and inactive filler loadings was the prime factor for determining the dynamic-mechanical behaviour of ethylene-propylene-diene monomer rubbers. Scanning electron microscopy was used to study the structure of reinforced dense and microcellular elastomeric materials. The effects of filler and blowing agent content on the morphology of composites were investigated. Microcellular samples cured in salt bath show smaller cells and uniform cell size compared with samples cured in hot air. Dynamic-mechanical thermal analysis showed appreciable changes in the viscoelastic properties by increasing active filler content, which could enable tailoring the material properties to suit sealing applications

    Occurrence of specific behaviour of growing pollen tubes in the ovary of the 'Pozna Plava' plum cultivar

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    Plum cultivar 'Pozna Plava' was developed at the Fruit Research Institute, Cacak, and released as a new cultivar in 2008. This plum cultivar bears poorly and irregularly, resulting in very low fruit set. Therefore, the occurrence of specific behaviour of growing pollen tubes in the ovary was studied over a three-year period, in three pollination variants (self-, cross- and open). The cross-pollination was performed using the pollen of 'Cacanska Najbolja', 'Hanita' and 'Presenta' plum cultivars. Growth of pollen tubes was observed by means of fluorescent microscopy. The analysis was conducted taking into consideration whether or not the pollen tube has penetrated into the nucellus. Presence of specific behaviour of growing pollen tubes in the ovary was observed in all pollination variants. Atypical pollen tube growth was recorded in the locyle of the ovary as well as in the region of the obturator, the micropyle and the embryo sac. The largest percentage of atypical pollen tube growth in all pollination variants, before and after the penetration into the nucellus was recorded in the obturator and micropyle region. In the open pollination variant, the ovaries showing this specific behaviour of growing pollen tubes, were noted in only one year. Cross- and self-pollination variant showed the existence of specific behaviour of growing pollen tubes in all regions of the ovule, including the embryo sac (except in self-pollination). Only in cross-pollination variant, correlation-regression analysis has shown that specific behaviour of growing pollen tubes did affect the pollen tube penetrating into the nucellus

    Fertilization biology of 'Reka' highbush blueberry

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    The paper presents results of the three-year study of fertilization biology of 'Reka' highbush blueberry (Vaccinium corymbosum L.) under the cross-, open and self-pollination variants. Cross-pollination was performed using the pollen of 'Bluecrop', 'Duke', 'Nui' and 'Ozarkblue'. Pollen tube growth in vivo was monitored using fluorescent microscopy method. The folowing parameters were observed: the average number of pollen tubes in the upper part and base of the style, number of ovary locules with the penetration of pollen tubes, and polen tubes' growth dynamics through certain pistil parts. The highest number of pollen tubes in the upper part and base of the style, as well as the fastest penetration into the ovary locules were found in the open pollination variant. Significant decrease of pollen tubes number from the upper third to the base of the style has been recorded in all pollination variants, whereas in the self-pollination variant it was to the greatest extent. The results also indicated that pollen tube growth dynamics in the progamic phase of fertilization was significantly influenced by pollenizer genotype and environmental factors, temperature in particular. On the second day after pollination, pollen tubes penetrated the ovary locules in all pollination variants, implying that favourable period for fertilization in this cultivar was one to two days after flower opening. In self- and cross-pollination variants, dynamics of pollen tubes growth was similar, indicating that cultivar 'Reka', commonly grown in multi-varietal, could also be grown in mono-varietal plantations (without pollenizers)
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