bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ras and Ras mutations in cancer
Authors: Rajasekharan Satish , Raman Thiagarajan 
Published: April 2013

Abstract
Ras genes are pre-eminent genes that are frequently linked with cancer biology. The functional loss of ras protein caused by various point mutations within the gene, is established as a prognostic factor for the genesis of a constitutively active Ras-MAPK pathway leading to cancer. Ras signaling circuit follows a complex pathway, which connects many signaling molecules and cells. Several strategies have come up for targeting mutant ras proteins for cancer therapy, however, the clinical benefits remain insignificant. Targeting the Ras-MAPK pathway is extremely complicated due its intricate networks involving several upstream and downstream regulators. Blocking oncogenic Ras is still in latent stage and requires alternative approaches to screen the genes involved in Ras transformation. Understanding the mechanism of Ras induced tumorigenesis in diverse cancers and signaling networks will open a path for drug development and other therapeutic approaches.
Reproduction, growth and circadian activity of the snail Bradybaena fruticum (O. F. Müller, 1774) (Gastropoda: Pulmonata: Bradybaenidae) in the laboratory
Authors: Kuźnik-Kowalska Elżbieta , Lewandowska Małgorzata , Pokryszko Beata , Proćków Małgorzata 
Published: April 2013

Abstract
Selected life cycle parameters of the snail Bradybaena fruticum were studied in the laboratory. The initial material for the laboratory culture was taken from a population in South Western Poland; the snails were kept in Petri dishes and plastic containers. The temperature, humidity and lighting conditions were maintained at a constant level (day 18°C, night 12°C, rh 80%, light:dark 12:12). Circadian activity observations were conducted outside the climatic chamber. Eggs — calcified, slightly oval, of mean dimensions 2.67x2.56 mm — were laid singly or in batches of 6–62, as a result of both biparental and uniparental reproduction. Incubation took 27–76 days and hatching was asynchronous. Hatching success was lower among eggs produced by single parents compared to eggs produced by two parents (c.a. 56 and c.a. 88%, respectively). Growth included fast (2.25 to 5 whorls) and slow (1.9–2.25 and >5 whorls) phases as well as lip formation, and took 261 to 420 days. The first eggs/batches were laid c.a. one year later, and for uniparentally reproducing snails the period was even longer. The growth of snails kept singly was faster than in those kept in groups. Juvenile snails were much more active than adults in the spring, summer and autumn but the adults were more mobile in the winter. In all seasons, juveniles were more active at night than adults.
Palomena prasina (Hemiptera: Pentatomidae) vibratory signals and their tuning with plant substrates
Authors: Polajnar Jernej , Kavčič Andreja , Kosi Alenka , Čokl Andrej 
Published: April 2013

Abstract
Palomena prasina is interesting for the study of vibrational communication within the Pentatomid subfamily Pentatominae, because its host range is limited to woody plants, unlike the better known Nezara viridula, whose vibrational communication is commonly used as a model for the whole family. The vibrational repertoire of P. prasina was described several decades ago and is redescribed in this paper using modern methods for non-contact vibration recording. Additionally, we hypothesized that this species has retained the capacity for signal frequency variation necessary for tuning to resonance properties of various host plants of Pentatominae, but if the signals are emited in the absence of mechanical feedback, they are tuned more specifically to their native acoustic environment — woody plants. By recording live bugs signalling on different substrates and comparing spectral properties of their signals among substrates, we found that there is a match between the signals emitted on a woody branch and those emitted on a non-resonant surface, while spectral properties of signals emitted on herbaceous plants differ. Our findings provide evidence in support of the signal tuning hypothesis and shed further light on the crucial role of substrate in vibrational communication of insects.
DFT study of free radical scavenging activity of erodiol
Authors: Marković Zoran , Đorović Jelena , Dekić Milan , Radulović Milanka , Marković Svetlana , Ilić Marija 
Published: April 2013

AbstractAntioxidant activity of erodiol was examined at the M05-2X/6-311+G(d,p) level of theory in the gas and aqueous phases. The structure and energy of radicals and anions of the most stable erodiol rotamer were analyzed. To estimate antioxidant potential of erodiol, different molecular properties were examined: bond dissociation enthalpy, proton affinity together with electron transfer energy, and ionization potential followed by proton dissociation enthalpy. It was found that hydrogen atom transfer is the prevailing mechanism of erodiol behavior in gas; whereas single electron transfer followed by proton transfer and sequential proton loss electron transfer mechanisms represent the thermodynamically preferred reaction paths in water.
Job Differentiation vs. Unemployment
Authors: Amine Samir 
Published: April 2013

Abstract
We use a matching model in which the horizontal job differentiation results from the rationale response of firms to the state of the labor market. We show that a decrease in the labor market tightness gives firms an incentive to raise the differentiation degree of jobs. Comparative statics suggests that an increase in unemployment benefits and in the minimum wage improves productivity of skilled workers by making jobs more differentiated, and leads to a raise in unemployment rate.
Enhanced Bioactivity of Calcium Phosphate Coatings Obtained by a Direct Electrodeposition from Hanks’ Solution on Ti Surface / Zwiekszona Bioaktywnosc Powłok Fosforanowo-Wapniowych Otrzymanych Metoda Bezposredniego Elektroosadzania Na Powierzchni Ti Z Roztworu Hanka
Authors: Pisarek M. , Roguska A. , Marcon L. , Andrzejczuk M. , Janik-Czachor M. 
Published: April 2013

The main requirements for titanium biomaterials are: (a) biocompatibility, (b) resistance to biological corrosion and (c) antisepticity. These requirements may be met by a new generation of titanium biomaterials with a specific surface layer of strictly defined microstructure, chemical and phase composition. Recently, various surface modifications have been applied to form a bioactive layer on Ti surface, which is known to accelerate osseointegration.
The purpose of this study was to investigate bioactivity of porous calcium phosphate coatings prepared by a direct electrodeposition on Ti surface from a modified Hanks’ solution. The thick 200 nm coatings, were prepared via cathodic polarization at constant voltage -1.5 V vs. OCP in a Hanks’ solution. In order to evaluate the potential use of the coatings for biomedical applications, the adsorption of bovine serum albumin (BSA), the most abundant protein in blood, and living cells attachment (osteoblasts, U2OS) were studied. The observed differences in living cells attachment suggest a more promising initial cellular response of Ca-P coatings with a pre-adsorbed albumin.
The topography and a cross-section view of the Ca-P coatings were characterized using SEM and STEM techniques. The surface analytical techniques (AES, XPS, and FTIR) were used to characterize their chemical composition before and after protein BSA adsorption.
The Structure of Self-Esteem Among Physical Education Students in the Selected Academies in Poland
Authors: Brojek Anna 
Published: April 2013

Abstract

Introduction. One of the elements of the self-knowledge system is self-esteem. This system is continuously organized into a certain kind of a distinctive structure of ideas and notions. The aims of this paper, is to define the sense of self-esteem among first year physical education students. Material and methods. The method applied in the research was a diagnostic survey accompanied by questionnaire based on Fitts's “The Tennessee Self-concept Scale”, in a simplified term TSCS. The survey was conducted in Academic Year 2008/2009 among 667 respondents in eight state and non-state Polish academies. Results. The conducted survey indicates that there is an obvious tendency for students to have high self-esteem. Such a high level falls within the remit of the majority of aspects: moral-ethical self, family self and personal-self. Moreover, a high level of self-esteem was recognized in students' global sense of self-esteem and in self-esteem concerning personal-self. Crucially, the medium level of self-esteem concerning behaviour was declared by a considerable percentage of the respondents. The high level of global self-esteem was definitely assigned to female students whereas the medium level was noticed among male students. Conclusion. One of the key elements of human personality is the sense of selfesteem which influences both the level of self-acceptance and self-awareness. Therefore, it is of paramount importance to develop these skills and the psychophysical characteristics in the process of upbringing and educating.
The Locus of Control and the Sense of Personal Competence in Young Athletes Practicing Martial Arts
Authors: Rutkowska Katarzyna , Klimczak Jarosław 
Published: April 2013

Abstract

Introduction. The locus of control and the sense of competence are the psychological resources relevant to the taking-up and continuation of actions in certain situations. They are important regulating factors of the relationships between the man and the environment. It seems that, in such a specific field as martial arts are, these characteristics are useful and their identification and targeted strengthening desirable. The aim of the research presented in this paper was to gather knowledge about the sense of competence and self-control of young people practicing martial arts, as well as the relationship between these variables. Materials and methods. A total of 39 people aged 14-19 years participated in this research. All of them practiced martial arts. They had an average of more than two years training. Data were collected through the (KBPK) Locus of control Questionnaire (by G. and A. Krasowicz Kurzyp-Wojnarski) and the Personal Competence Scale KompOs (by Z. Juczyñski), and a questionnaire designed specifically for this research. Results. Statistical analyses conducted for the study have showed that the respondents represent a transient sense of locus of control, and average levels of personal competence in the field of strength and perseverance. Out of the measured variables, the locus of control in the event of success and a sense of strength were relatively highest. These variables also proved to be interdependent. Analysis also allowed for identification of many other relationships between the variables. Conclusions. Our findings may provide a clue for a possible modification of programs mentally preparing young athletes for martial arts sports. They may also act as suggestions sensitise trainers to specific psychosocial needs of young athletes.
Development of the rosalia longicorn Rosalia alpina (L.) (Coleoptera: Cerambycidae) in the sycamore maple Acer pseudoplatanus L. – the first report from Poland
Authors: Michalcewicz Jakub , Bodziarczyk Jan , Ciach Michał 
Published: April 2013

AbstractIn 2012 the development of the rosalia longicorn Rosalia alpina (L.) was confirmed in the sycamore maple Acer pseudoplatanus L., a new host plant in Poland. In the laboratory, one adult beetle was reared from a branch obtained from the Magura National Park (Beskid Niski Mts., Carpathians, SE Poland). The breeding material was collected at a site located in the fertile Carpathian beech forest association Dentario glandulosae-Fagetum, in a stand with an admixture of sycamore maple trees. In the paper the importance of the sycamore maple as a host plant is discussed.
Dielectric properties of wheat flour mixed with oat meal
Authors: Łuczycka D. , Czubaszek A. , Fujarczuk M. , Pruski K. 
Published: April 2013

Abstract
Possibilities of using electric methods for determining admixtures of oat meal to wheat flour, type 650 are presented. In wheat flour, oat meal and mixtures containing 10, 20 and 30% of the oat meal, moisture, protein, starch and ash content, sedimentation value, yield and softening of wet gluten were determined. In samples containing 0, 5, 10, 15, 20, 25, 30 and 100% of oat meal, the dielectric loss factor and conductivity were determined using an impedance analyzer for electromagnetic field frequency ranging from 0.1-20 kHz. It was found that the dielectric loss factor varied for tested material. The best distinguishing between tested mixtures was obtained at the measuring electromagnetic field frequency of 20 kHz. The loss factor was significantly correlated with the yield of wet gluten and the sedimentation value, parameters indicating the amount and quality of gluten proteins in flour.
Effect of seed stimulation on germination and sugar beet yield
Authors: Prośba-Białczyk U. , Szajsner H. , Grzyś E. , Demczuk A. , Sacała E. , Bąk K. 
Published: April 2013

Abstract
Germination and sugar beet yield after seed stimulation were investigated. The seeds came from the energ'hill technology and were subject to laser irradiation. The experiments were conducted in the laboratory and field conditions. Lengthening of germinal roots and hypocotyls was observed. A positive effect of the stimulation on the morphological features was observed for the Eh seeds and laser irradiation applied in a three-fold dose. The energ'hill seeds exhibited a significantly higher content of carotenoids in seedlings and an increase in the content of chlorophylls. Laser light irradiation favourably modified the ratio of chlorophyll a to b. The leaves and roots of plants developed from the energ'hill and irradiated seeds were characterized by higher dry matter content thanin non-stimulated seeds. Seed stimulation had a positive influence on yielding and the saccharose content.
The Concept of Subsystem for Mobile Robot Management From the Operator Console
Authors: Błaszczyk Sylwester , Wulkiewicz Adam , Duch Piotr , Łaski Maciej , Jachowicz Rafał , Sankowski Dominik 
Published: April 2013

Abstract
The authors in this publication present the concept of control system for the console operator to manage mobile robot platform and its components. Implemented functionality provides the ability to set the robot in different modes. The operator can control the state of robot using simple commands, and is also able to carry more complex tasks. The applied layered software architecture and Object-oriented programming (OOP) allows for easy management of software, maintenance, reusability and its further development.
Reduction of Pixel Occurrences in Background Updating
Authors: Bubliński Zbigniew , Pawlik Piotr 
Published: April 2013

Abstract
The paper presents the modification of background generation algorithm based on analysis of the frequency of occurrences of pixels. The proposed solution allows the generation of the background and its updating, the introduced parameter allows to adjust the algorithm according to the time rate of changes in the image. The results show that the modified method can be applied in many tasks related to the detection and analysis of moving objects.
Fuzzy Spatial Relations-Based Markers Location on Images From an Infrared Camera
Authors: Jaworski Tomasz , Kucharski Jacek 
Published: April 2013

Abstract
The following paper presents a fuzzy assessed spatial relations-based approach to detect a set of visual markers on a rotating steel cylinder previously discussed by the authors. Presented algorithm uses fuzzy inference system based on fuzzy assessed objects’ shape, orientation and mutual relative position in an input image.
Using Infrared Camera for Dynamic Properties Identification of Induction Heated Rotating Steel Cylinder
Authors: Kucharski Jacek , Frączyk Andrzej , Urbanek Piotr 
Published: April 2013

Abstract
Using of precise temperature control method requires knowledge of the dynamic properties of the controlled system. It can be determined by applying infrared camera to the temperature measurement of controlled system. The article presents two models of induction heated rotating steel cylinder and the method of their parameters estimation.
Mapping SBQL Query Results to XML
Authors: Kowalski Tomasz , Adamus Radosław , Wiślicki Jacek 
Published: April 2013

Abstract
The following paper presents a solution resolving inconsistencies in processing XML data-structures with SBQL objectoriented query and programming language. SBQL is based on Stack-Based Architecture (SBA) a formal approach reconstructing query languages’ concepts from the point of view of programming languages (Pls). The basic data store model AS0 defined in SBA can describe complex hierarchical data structures implied by XML. Nevertheless, in the classical approach to processing XML some use-case scenarios cannot be solved in satisfactory manner. In such cases SBQL queries return results either typologically obscure from the point of view of SBA or invalid from the point of view of expected XML tags formatting. The paper illustrates this problem on comprehensive examples, presents its cause and the solution.
Free Mobile Network - Dream or Real Chance
Authors: Mosorov Volodymyr 
Published: April 2013

Abstract
Number of mobile telephony users in Poland is growing every day. Everyone having active phone number should pay amount of money for its use. Author’s main idea is to offset costs and provide the user with complete independence from the operator that provides telecommunications services to him. To do that proposes a way to communicate without the use of the infrastructure operators. The purpose of this paper is to present the concept of free mobile network according to an original concept.
Frivoles et bizarres . Les fictions de Perrault, de Sade et de Potocki aux frontières du XVIII e siècle
Authors: Sermain Jean-Paul 
Published: April 2013

Perrault qualifie les « histoires du temps passé » dont il offre une version modernisée de « frivoles et bizarres », qualificatifs aussi bien applicables à d’autres œuvres de la fin du xviii e siècle (Potocki et Sade), et même au xx e siècle. Ils qualifient un traitement distancé, humoristique et critique, d’un désir illimité, en particulier dans le champ politique : chez le despote.
Des échos virgiliens dans un Voyage Extraordinaire de Jules Verne, Le Château des Carpathes (1892)
Authors: Dupuy Lionel 
Published: April 2013

L’article analyse le rôle d’une citation latine dans la construction de l’imaginaire géographique du roman de Jules Verne : Le Château des Carpathes (1892). Nous étudions plus particulièrement ici l’insertion dans le récit d’une référence virgilienne qui participe aussi à l’ancrage historique et géographique d’un Voyage littéralement Extraordinaire.
Pirro Ligorio (1512-1583) et les véhicules antiques
Authors: Vagenheim Ginette 
Published: April 2013

La vaste encyclopédie des Antichità romane de Pirro Ligorio renferme divers traités consacrés à des sujets liés à l’Antiquité classique, qui souvent en constituent la première étude systématique ; c’est le cas du traité consacré aux véhicules anciens (libro dei carri antichi) dont la nouveauté séduisit l’érudit strasbourgeois, Johannes Schefferus, qui décida d’en donner une traduction latine accompagnée de notes (1671) ; mais les limites de l’œuvre ligorienne, que Scheffer souligne sans concession, poussèrent le savant à publier à son tour un volumineux traité en deux livres sur le sujet (De re vehiculari) ; ses critiques nous renseignent sur la méthode de travail de Ligorio et nous donnent l’occasion de souligner l’apport principal de l’antiquaire aux Antichità romane, à savoir l’exceptionnel apparat iconographique, et d’indiquer les conditions particulières de la rédaction d’une telle œuvre dans le contexte culturel de Rome à l’époque de la Contre-Réforme.
Quand les druides tracent des figures : Antiquités nationales et prisca theologia dans le dialogue De animæ immortalitate de Charles de Bovelles (1479-1567)
Authors: Klinger-Dollé Anne-Hélène 
Published: April 2013

Bovelles, dans son œuvre philosophique, ne laisse pas percevoir un intérêt aussi manifeste pour l’Antiquité que ne le font d’autres humanistes de la Renaissance. Le petit dialogue De animae immortalitate, publié en 1551-1552, permet néanmoins de se rendre compte que cet intérêt existe et se concrétise par des moyens variés : recours à la forme dialoguée, mise en scène d’un « druide » comme personnage principal – dont cet article cherche à comprendre les implications –, recours à un lexique latin enrichi. Ce dialogue est sans doute à la croisée de plusieurs attitudes de la Renaissance pour l’Antiquité : intérêt d’ordre national qui se nourrit de tout un « imaginaire » gaulois, intérêt chez les penseurs et les poètes pour « l’ancienne théologie » (prisca theologia). Mais la « couleur antique » donnée au dialogue de Bovelles répond aussi à des visées très personnelles. Il s’agit de revendiquer la légitimité d’une démarche philosophique, distincte de la Révélation et de la théologie institutionnelle, dans un contexte de censures exercées par la Faculté de Théologie de Paris.
Selection ofAedes aegypti(Diptera: Culicidae) strains that are susceptible or refractory to Dengue-2 virus
Authors: Caicedo Paola A. , Barón Olga L. , Pérez Mauricio , Alexander Neal , Lowenberger Carl , Ocampo Clara B. 
Published: April 2013

AbstractThe vector competence (VC) ofAedes aegypti(Linnaeus) (Diptera: Culicidae) varies geographically and is affected by both genetic and environmental factors. Understanding the molecular mechanisms that influence VC may help develop novel control strategies. The selection of susceptible and refractory strains is the first step in this process. We collected immatureA. aegyptiin the field and established strains that were susceptible and refractory to Dengue-2 virus by isofamily selection through several generations. Infection was detected by immunofluorescence of head or midgut tissues to determine infection barriers and the % of VC by tissue. We selected three strains: Susceptible (Cali-S) (96.4% susceptible at F19), Refractory with a midgut escape barrier (Cali-MEB) (44.1% refractory at F15), and Refractory with a midgut infection barrier (Cali-MIB) (40% refractory at F16). The effects of the infection were measured using Kaplan–Meier survival rates over the first seven generations. All selected strains showed a similar decrease in survival and in the number of eggs laid/female through the seven generations, suggesting that changes were a result of the selection process rather than the virus infection. The results of this study suggest that VC is associated with multiple genes, which have additive effects on susceptibility.