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Shell Size of the Freshwater Snail Physella acuta (Draparnaud, 1805) Collected from Water Vegetation: A Case Study from South-East Bulgaria
Stanislava Y. Vasileva
Ecologia Balkanica , 2011,
Abstract: The specimens of the freshwater snail Physella acuta collected from Southeastern part of Bulgaria during the cold period as a whole were with mean shell height of 5.7 mm. During spring and summer it was more than twice lower, 2.3 mm. The ratio of the size groups was more equally spread during cold seasons rather than in warm ones. The variation index during cold seasons is about eight times higher than in the warm ones (Var = 3.96 and 0.58, respectively). On both plant species the gastropods had similar mean shell heights. For C. demersum it was 4.8 mm (min-max = 2.5-8.9 mm), and for E. canadensis 7.2 mm (min-max = 3.6-10.0 mm).
Shell Size of the Freshwater Snail Radix auricularia (Linnaeus, 1758) Collected from Water Vegetation: A Case Study from South-East Bulgaria
Stanislava Y. Vasileva
Ecologia Balkanica , 2012,
Abstract: The specimens of the freshwater snail Radix auricularia collected from Southeastern part of Bulgaria during the cold period as a whole were with mean shell height of 3.7 mm. During spring and summer it was similar, 3.3 mm. The ratio of the size groups was more equally spread during cold seasons rather than in warm ones. The variation index during cold seasons is about seven times higher than in the warm ones (Var = 13.1 and 2.14, respectively). On the five plant species the gastropods had different mean shell heights. For C. demersum it was 3.4 mm (min-max = 1.4-15.8 mm), and for E. canadensis 7.9 mm (min-max = 2.4-14.6 mm), M. spicatum it was 2.8 (min-max = 2.4-3.4 mm), P. natans 3.9 (min-max = 1.1-9.0), P. pusillus 4.8 (min-max = 3.1-8.2).
Aquatic Macrophytes as Microhabitats of Radix auricularia (Gastropoda: Pulmonata): A Case Study from Southeast Bulgaria
Stanislava Y. Vasileva,Dilian G. Georgiev,Gana M. Gecheva
Ecologia Balkanica , 2009,
Abstract: The aim of the current study is to investigate the abundance of thefreshwater pulmonate snail Radix auricularia among different aquatic plants communities, with the view of understanding if there is any particular habitat preference, comparing two freshwater basins having similar environmental conditions. The freshwater plant species were collected by net from two ponds at the end of May 2009 - 650 g wet plant mass, micro dam at Chernoochene Village, East Rhodopes Mts.; 138 g wet plant mass, small flood pond near the Maritza River, Plovdiv City, Upper Thracian Lowland. The plant mass was weighted in the laboratory after the alive snails were collected from the plant surface. Totally three species of freshwater plants were inhabited by R. auricularia, but its abundance and possible preference was highest on the Rigid Hornworth (Ceratophyllum demersum).
On the Communities of Freshwater Gastropods on Aquatic Macrophytes in Some Water Basins of Southern Bulgaria
Stanislava Y. Vasileva,Dilian G. Georgiev,Gana M. Gecheva
Ecologia Balkanica , 2011,
Abstract: The research was conducted through the period 2008 - 2009 in the Upper Thracian Lowland: Maritsa River in the city of Plovdiv, flood area near the bridge at UFT; Eastern Rhodopes: Varbitsa River at around 3 km south of the town of Kardzhali; Perperek River, within the village of Perperk; a pond in the village of Chernoochene. The material was collected from total of 3427 g herbage biomass from 7 plant species. On the aquatic macrophytes we generally found approximately the same diversity of species of freshwater gastropods during the cold and during the warm seasons. During the warm period we found a total of 6 species, and during the cold - 7 species. Most species we found on C. demersum, and E. canadensis. Overall for the studied water basins and seasons, the species R. auricularia, Ph. acuta and G. albus were most numerous and prefer to live on C. demersum. We calculated a narrow ecological niche of the species in most cases, where slightly wider ecological niches were registered for R. auricularia and G. albus. Largest diversity of snail communities we found on C. demersum and E. canadensis. The value of the diversity index was very low for the other species of macrophytes. We calculated low values of S rensen’s index between most of the freshwater macrophytes in relation to communities of gastropods. High similarity between the communities we indicated for C. demersum and P. pussilus, and C. muricatum, and Lemna sp., and very high between P. pussilus, and Lemna sp. We found an aggregated distribution on the macrophytes of the following species of gastropods: R. auricularia, Ph. acuta, P. corneus, P. planorbis, G. albus and occasional one for V. piscinalis, A. lacustris, and L. stagnalis.
Depression—Factors, Symptoms, Prevention and the Role of Open Journal of Depression  [PDF]
Stanislava Y. Stoyanova
Open Journal of Depression (OJD) , 2014, DOI: 10.4236/ojd.2014.31002
Abstract: The data for the spread of depression in several countries are presented. The differences in occurrence of depression among some social categories of population are discussed. The symptoms and the forms of depression are described in brief, as well as several factors contributing to depression. The role of Open Journal of Depression is related to some possibilities for coping with and preventing depression.
Attitudes Towards Young People in Bulgaria  [PDF]
Stanislava Stoyanova
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.27102
Abstract: This paper presents a study of the stereotypes of and attitudes towards young people in Bulgaria. The method was developed on the basis of Fishbein’s and Ajzen theory and using several coding matrices for content analysis by a group of psychologists during the summer school “Social cognition” held in Blagoevgrad, Bulgaria in July 2010. The social involvement of young people, life satisfaction and family issues were studied.
DIAGNOSIS AND THERAPY OF MOTOR DISTURBANCES IN CHILDREN WITH AUTISM
Neli VASILEVA
Journal of Special Education and Rehabilitation , 2012,
Abstract: The paper reveals uncommonly examined aspects concerning the specifics of the motor de-velopment in the children with autistic spectrum disorders and the problems regarding their diagnostics and the-ra-py. An analytical theory of the autistic disorders is des-cribed, connecting autism with disorders in the ba-sic levels of affective behavioral regulation. The re-port in-cludes a classification of the groups of autis-tic children, each of which demonstrates spe-ci-fic motor dysfunctions. Furthermore, the paper ana-ly-zes and recommends methodo-lo-gi-cal approaches to motor therapy which will help improve the de-ve-lop-ment of different motor skills.
Professional Monograph Review
Mildeová Stanislava
Journal on Efficiency and Responsibility in Education and Science , 2008,
Abstract: Title of the monograph: Systems Approach to Knowledge Modelling. Authors: dr. Ludmila D meová; dr. Milan Hou ka; dr. Martina Hou ková Beránková. Cover designer: Olga ermáková. Interior designer: Roman Kvasni ka. Publisher: Graphical Studio Olga ermáková, Czech Republic. Place: Hradec Králové, Czech Republic. Year of publication: 2008. Number of pages: 282. Recommended price of the book: 39.90 EUR. First edition. Reviewer : dr. Stanislava Mildeová; Department of Systems Analysis, Faculty of Informatics and Statistics, University of Economics, Prague.
Developing Intercultural Communication and Teaching Culture by the Use of VoiceThread in Primary School
Stanislava Jaklic
Humanising Language Teaching , 2012, DOI: 17559715
Abstract:
Influence of ethylenediamine on the experimental 1H NMR resonance line of clinoptilolite from Ni ny Hrabovec
Nagyová Stanislava
Acta Montanistica Slovaca , 2001,
Abstract: Materials prepared on the basis of natural and synthetic zeolites are an object of interest in many industrial fields. They show remarkable, often new qualities with wide practical applications.Copper forms of clinoptilolite with ethylenediamine content are studied in this paper. The aim of the study is to verify the presence of ethylenediamine in the samples and to find out how it is bound within the channels. For this reason, three different samples of clinoptilolite were measured by the nuclear magnetic resonance method. The first sample was a pure clinoptilolit, the second was the clinoptilolite with Cu (II) cations and the third sample was the clinoptilolite with Cu (II) cations and ethylenediamine. The measurements confirmed the difference between the samples and they also showed that the ethylenediamine in the channels is not distributed homogeneously. It is located in clusters which fact is in coincidence with expectations. Nevertheless, as for a chemical bond between the ethylenediamine and the channel system, the NMR experiments do not provide satisfactory information.
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