Immunohistochemical study on roe deer haemal nodes

Background: The aim of this study was to investigate the immunohistochemical characteristics of the haemal nodes located in the abdominal and thoracic cavities in roe deer (Capreolus capreolus). Materials and methods: In this study, 2 adult male and 2 adult female roe deers in addition to 2 roe deer foetuses at the late foetal stages were used. The avidin-biotin-peroxidase technique was applied to anti-CD3, anti-CD79acy, anti­-macrophage, anti-S100 primary antibodies. Results: Positive results were gained for all the antibodies used. Many CD3 positive T-lymphocytes were seen in the lymphoid tissue areas of the foetal haemal nodes, in the germinal centre of the lymph follicles of the adult haemal nodes and in their lymphatic cords. CD79acy positive cells were less in number while S-100 protein was positive in both lymph follicles and in sinuses of the adult haemal nodes. In foetal haemal nodes, cells positive for S-100 protein were more prevalent in the sinuses. For the MAC387 primary antibody, there were positive macrophages seen in the capsule and trabeculae of the haemal nodes, located denser in males. Macrophage cells in the lymphoid structures and granulocytes in the sinuses of the haemal nodes of both adults and foetuses were positive for MAC387. Conclusions: This study is the first one to define the detailed structural features immunohistochemically in the haemal nodes of the roe deer. Even it’s concluded that the results were similar with the other ruminants, it’s also pointed out that there are certain differences among the foetal, adult male and female haemal nodes of the roe deer. (Folia Morphol 2018; 77, 2: 266–271

Analysis and research of existing ERASMUS + projects for students

Nowadays, the analysis of existing exchange programs is an important task for students. The importance of this work is that it makes it possible to find the necessary program for students, based on their knowledge and capabilities. There are a huge number of exchange programs, but it is very important to find the program on which student will be the best candidate and where student have the right to participate. Erasmus+ stands for European Community Action Scheme for the Mobility of University Students. It’s a Higher Education exchange program for students, teachers and institutions, run in the UK by the British Council. Basically, it’s a chance for universities and students across 33 countries to mingle, learn new skills, expand their horizons, study for 1-2 semesters or doing an internship abroad in another country for a period of at least 2 months and maximum 12 months per cycle of studies

Simulation of water drops on a surface

We have designed and implemented a model for rendering and animating water drops moving on a surface under physical effects such as gravity, surface affinity and wind. For improved rendering, the output of the simulation (i.e. the animation sequence of the drops) is recorded for later offline image generation. ©2008 IEEE

Mammary fibroadenoma in a lamb

A fibroadenoma was diagnosed in the left udder of a 3-month-old female Chios lamb. No recurrence was observed after surgery. Grossly, the tumor had a whitish-gray lobular appearance, and the lobules were interlaced with thin septa. Microscopically, the tumor was composed of proliferating fibroepithelial tissue, including differentiated ducts lined by whorls and interlacing bundles of abundant loose fibrovascular stroma. Immunohistochemistry revealed the ductal epithelium to be positive for pancytokeratin (AE1/AE3) and loose fibrovascular stroma was positive for vimentin and basal cells covering the ductal epithelium of alpha-smooth-muscle actin. Immunostaining for the estrogen and progesterone receptors was negative. A diagnosis of mammary fibroadenoma was made based on the histological and immunohistochemical findings

ASSESSMENT OF BIODIVERSITY OF CARABID BEETLES (COLEOPTERA, CARABIDAE) OF THE TSHETSHEN ISLAND IN THE СASPIAN SEA

Aim, material. Biodiversity of carabid beetles (Coleoptera, Carabidae) is studied for the Tshetshen Island in the Caspean Sea based on examination of 32799 adults belonging to 123 species collected during two seasons.Results. Five collecting sites on the Tshetshen Island were sampled and compared with data from the Nordovyi and Tiulenyi islands as well as from coastal areas of Dagestan. Carabid species composition of the Tshetshen Island differs in having a higher fraction of desert taxa. In this respect, it resembles more that of the Middle Asia and Kalmykia. Some species, common in the mainland, are not found on the island. Rank-abundance distributions, biodiversity indices and effective numbers of species were used to quantitify differences among collecting sites. In most cases, the data obtained fit the best to the Zipf-Mandelbrot distribution. Numbers of carabid species in sites ranged from 45 to 89. Despite of variation, the richness indices are shown to be significantly lower for the Tshetshen Island. This conclusion was confirmed using rarefaction curves. Decomposition of γ-diversity into its α- and β- components in terms of effective numbers of species has shown that α-diversity of carabids in mainland areas exceeds that of the Tshetshen Island only marginally while β-diversity is significantly higher. Cluster analysys of distance matrices has shown that the carabid assemblages of the Tshetshen Island are the most poor and specific, those from the coastal areas – the most species-rich while those of the Tiulenyi and Nordovyi islands are intermediate.Conclusion. Carabid assemblages of each island in the Caspian Sea may be considered as a rather randomly impoverished subset from the regional species pool of the Middle Asia and Caspian lowland

N,N′-Bis[(2-hydroxy­phen­yl)(phen­yl)methyl­idene]propane-1,2-diamine

In the the title compound, C29H26N2O2, two strong intra­molecular O—H⋯N hydrogen bonds involving the hydr­oxy and imine groups generate S(6) ring motifs. The dihedral angles between the pairs of terminal benzene rings are 89.8 (2) and 87.8 (2)°

A characteristics framework for Semantic Information Systems Standards

Semantic Information Systems (IS) Standards play a critical role in the development of the networked economy. While their importance is undoubted by all stakeholders—such as businesses, policy makers, researchers, developers—the current state of research leaves a number of questions unaddressed. Terminological confusion exists around the notions of “business semantics”, “business-to-business interoperability”, and “interoperability standards” amongst others. And, moreover, a comprehensive understanding about the characteristics of Semantic IS Standards is missing. The paper addresses this gap in literature by developing a characteristics framework for Semantic IS Standards. Two case studies are used to check the applicability of the framework in a “real-life” context. The framework lays the foundation for future research in an important field of the IS discipline and supports practitioners in their efforts to analyze, compare, and evaluate Semantic IS Standard

Modeling and simulating for the treatment of subjectivity in the process of choosing personnel using fuzzy logic

Every day organizations pay more attention to Human Resources Management, because the human factor is preponderant in the results of it. One of the important policies is the Selection of Personnel, these are needed for their decision-making results, which in many organizations is done in a subjective manner and which brings consequences not very favorable to them. Taking this problem into account, it is decided to design and apply procedures and tools of fuzzy mathematics to reduce subjectivity and uncertainty in decision-making, creating work algorithms for this policy that includes multifactorial weights and analysis with measurement indicators that they allow tangible and reliable results. In this case of personnel selection, eight candidates were taken into account and by applying a diffuse evaluation system, the candidate with the highest rating of 98% was chosen. This indicates that subjectivity was reduced when choosing the best evaluated candidate

Comparative Cranial Geometric Morphometrics among Wistar Albino, Sprague Dawley, and WAG/Rij Rat Strains

This research utilizes geometric morphometrics to investigate shape variation in the skull, mandible, and teeth among three rat strains: Wistar Albino (WA), Sprague Dawley (SD), and WAG/Rij (WR). Through the analysis of 48 rats using 2D geometric morphometric techniques, significant differences in their skull morphology were identified. This study indicates a shift from a rectangular to an oval cranial shape across strains, with notable size and morphological variances. Particularly, the WR strain’s skull shape significantly differs from the SD and WA strains, suggesting distinct ecological or genetic pathways. Compared to the skull, mandible shape differences are less pronounced, but still significant. The WR strain exhibits a distinct mandible shape, potentially reflecting ecological adaptations like dietary habits. The teeth shape of WR rats is the most distinct. SD rats consistently exhibited larger sizes in both skull and mandible measurements, while WR rats were notably smaller. Interestingly, sexual dimorphism was not statistically significant in skull and teeth sizes, aligning with findings from previous studies. However, the mandible showed clear size differences between sexes, underscoring its potential for adaptive or behavioral studies. In summary, this study provides a comprehensive analysis of morphological variations in rat strains, highlighting the intricate interplay of size, shape, and ecological factors. These findings lay a foundation for deeper explorations into the adaptive, ecological, or genetic narratives influencing rat morphology