320 research outputs found
Isothermal Crystallization Kinetics of Compatibilized Blends of Polyolefins With a Semiflexible Liquid Crystalline Polymer
No full textProminent apoptosis in pautrier microabscesses: a distinctive finding in adult T-cell leukemia/lymphoma?
No full textHow positive and negative contact relate to attitudes towards Roma: Comparing majority and high-status minority perspectives
No full textIntergroup contact scholars have recently called for analyzing the effects of negative intergroup contact. In response to this call, we examined the correlates of positive and negative contact with one of the most stigmatized ethnic minorities, that is, Roma. We conducted a study in Bulgaria considering the point of view of the ethnic Bulgarian majority (n = 516) and of Bulgarian Turks (n = 274), an ethnic minority with higher status compared to Roma. Regression analyses showed that positive contact was associated with reduced prejudice and more support for pro-Roma policies, while negative contact revealed the opposite pattern. These associations did not differ between ethnic Bulgarians and Bulgarian Turks. Moreover, positive and negative intergroup emotions mediated the relationships between positive and negative contact on the one hand and prejudice and policy support on the other. Our study highlights the importance of emotional processes involved in positive and negative intergroup contact experiences and encourages future research to analyze how absolute vs. relative status differences shape the effects of positive and negative contact in complex hierarchical societies
Prominent Apoptosis in Pautrier Microabscesses: A Distinctive Finding in Adult T-cell Leukemia/Lymphoma?
No full textHow positive and negative contact relate to attitudes towards Roma: Comparing majority and high-status minority perspectives
No full textNeural Networks for Hyperspectral Imaging of Historical Paintings: A Practical Review
No full textHyperspectral imaging (HSI) has become widely used in cultural heritage (CH). This very efficient method for artwork analysis is connected with the generation of large amounts of spectral data. The effective processing of such heavy spectral datasets remains an active research area. Along with the firmly established statistical and multivariate analysis methods, neural networks (NNs) represent a promising alternative in the field of CH. Over the last five years, the application of NNs for pigment identification and classification based on HSI datasets has drastically expanded due to the flexibility of the types of data they can process, and their superior ability to extract structures contained in the raw spectral data. This review provides an exhaustive analysis of the literature related to NNs applied for HSI data in the CH field. We outline the existing data processing workflows and propose a comprehensive comparison of the applications and limitations of the various input dataset preparation methods and NN architectures. By leveraging NN strategies in CH, the paper contributes to a wider and more systematic application of this novel data analysis method
Intergroup contact moderates the relationship between social norms and intergroup attitudes
No full textAgricultural Academy
No full textabstract GerGovska, Z., Y. Mitev, t. anGelova, D. YorDanova and t. Miteva, 2011. effect of changes in body condition score on the milk yield of Holstein-Friesian and Brown swiss cows. Bulg. J. Agric. Sci., the effect of BCs at calving, loss of BCs, the duration of loss after calving and the reached minimum BCs during lactation on milk yield for 305 days have been studied. the object of study are 37 cows, of which 20 Holstein and 17 Brown swiss ones. the cows from both breeds are reared together with the same technology and nutrition. the body condition score of cows has been recorded on a monthly basis by using a 5-grade scoring system and accuracy of recording up to 0.5 points. BCs at calving, loss of BCs and the duration of loss after calving have significant effect on milk yield. The reached minimum BCS during lactation has no significant effect. in the Holstein cows BCs before calving is lower (2.8 points), loss of BCs is greater (1.95 points) and longer (3.8 months compared to the Brown cows (3.0, 1.75 and 2.8, respectively). Cows from both breeds with higher BCS (≥3.5 points), with greater loss of BCS after calving (≥2.5 points) and longer loss of BCS at the beginning of lactation (≥5 months) have the highest milk yield for a 305-day lactation
Compatibilization of Blends of Polyethylene With a Semirigid Liquid Crystalline Polymer by PE-g-LCP Copolymers
No full textThe blends of thermoplastics with liquid crystalline polymers show, in general, poor properties because of the lack of adherence between the two phases. The use of ad hoc synthesized copolymers containing the monomer units of the two polymers has been recently considered by some of us for blend compatibilization, and the results appear promising. In this work, new PE-S-LCP copolymers, prepared either by the synthesis of the LCP in the presence of a functionalized PE, or by reactive blending of the latter polymer with preformed LCP, have been employed as compatibilizing additives for blends of PE with a semirigid LCP. The morphology and the rheological and mechanical properties of the ternary blends, compared with those of samples without compatibilizers, or containing conventional maleic anhydride grafted PE, indicate that the PE-g-LCP copolymers do in fact lead to an improvement of interfacial adhesion, both in the melt and in the solid state, as well as to a modest enhancement of the mechanical properties. The results may be rationalized considering that the PE-S-LCP copolymers used by us consist of fairly short PE backbones with LCP grafts of various length. The molecules with longer LCP branches are thought to become mixed at the surface of the LCP particles and to give rise to fairly weak interaction with the PE matrix. It is argued that new PE-S-LCP copolymers synthesized from higher molar mass functionalized PE samples might show much better compatibilizing performance
- …
