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Search Results: 1 - 10 of 264 matches for " Betina Orman "
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Lidocaine-Induced Cell Growth of Human Gingival Fibroblasts. Role of Na+-K+-ATPase and PKC Activities  [PDF]
Emmanuel Quinteros Villarruel, Betina Orman, Enri Borda
Pharmacology & Pharmacy (PP) , 2014, DOI: 10.4236/pp.2014.58090

Background: Evidences have shown that local anaesthetics are clinically useful compounds that exert a pharmacological effect by blocking nerve impulse propagation and also it is able to provoke proliferation and cell growth. Aims: The aim of this study was to investigate the proliferation and cell growth capacity of lidocaine on human gingival fibroblast cells and the different signal pathways involved in its effect. Method: For this purpose in vitro cultures of human gingival fibroblasts were assayed and the effects of lidocaine on proliferation and cell DNA synthesis, Na+-K+-ATPase and PKC activities and K+ efflux were also evaluated. Results: Lidocaine stimulated in a concentration-dependent manner proliferation and cell growth of human gingival cells and the mechanism involve an increment in Na+-K+-ATPase and PKC activities, which led to an increase in K+ release. All of these effects were blocked by tetrodotoxin, ouabain and calphostin C. In addition, PMA (activator of PKC)

A Tree Based Data Aggregation Scheme for Wireless Sensor Networks Using GA  [PDF]
Ali Norouzi, Faezeh Sadat Babamir, Zeynep Orman
Wireless Sensor Network (WSN) , 2012, DOI: 10.4236/wsn.2012.48028
Abstract: Energy is one of the most important items to determine the network lifetime due to low power energy nodes included in the network. Generally, data aggregation tree concept is used to find an energy efficient solution. However, even the best aggregation tree does not share the load of data packets to the transmitting nodes fairly while it is consuming the lowest possible energy of the network. Therefore, after some rounds, this problem causes to consume the whole energy of some heavily loaded nodes and hence results in with the death of the network. In this paper, by using the Genetic Algorithm (GA), we investigate the energy efficient data collecting spanning trees to find a suitable route which balances the data load throughout the network and thus balances the residual energy in the network in addition to consuming totally low power of the network. Using an algorithm which is able to balance the residual energy among the nodes can help the network to withstand more and consequently extend its own lifetime. In this work, we calculate all possible routes represented by the aggregation trees through the genetic algorithm. GA finds the optimum tree which is able to balance the data load and the energy in the network. Simulation results show that this balancing operation practically increases the network lifetime.
Polyclonal spread of blaOXA-23 and blaOXA-58 in Acinetobacter baumannii isolates from Argentina
Andrea Karina Merkier,1 Mariana Catalano,1 María Soledad Ramírez,1 Cecilia Quiroga,1 Betina Orman,1 Laura Ratier,1 Angela Famiglietti,2 Carlos Vay,2 Ana Di Martino,3 Sara Kaufman,4 Daniela Centrón.1
Journal of Infection in Developing Countries , 2008,
Abstract: Background: In order to study the enzymatic carbapenem resistance mechanisms in Acinetobacter baumannii isolates from Argentina, we performed molecular characterization on 41 epidemiologically unrelated strains isolated from 1995 to 2006 with diminished susceptibilities to imipenem and meropenem.Methodology: Acinetobacter baumannii isolates were identified with the ARDRA technique. The total genomic DNA was used to detect each carbapenem β-lactamase gene described so far in this species and those insertion sequences usually associated to carbapenem β-lactamase genes (ISAba1, 2, 3, 4 and IS18) by the PCR technique with specific primers.Results: 26 out of 41 Acinetobacter baumannii isolates with diminished susceptibilities to carbapenems harboured the blaOXA-23 gene. The blaOXA-58 was detected in 13 out of 41 isolates. ISAba1 was always located upstream blaOXA-23. All isolates containing the blaOXA-58 gene showed ISAba3 downstream of the carbapenemase, while 4 isolates had a second copy of the ISAba3 upstream of the gene.Conclusion: Enzymatic carbapenem resistance in Acinetobacter baumannii was found in 88% of 41 non-epidemiologically-related strains mediated by the polyclonal spread of the blaOXA-23 and blaOXA-58 genes. The genetic structures surrounding the oxacillinase genes found in our bacterial isolates revealed a particular epidemiology in our geographical region. This data suggests the need of local molecular surveillance to help control multirresistance Acinetobacter baumannii infections.
Road Traffic Analysis on the CNN Universal Machine
Emel Arslan,Zeynep Orman
Lecture Notes in Engineering and Computer Science , 2011,
Os Estados Unidos e o ressurgimento da lógica The United States and the revival of logic
Willard Van Orman Quine
Scientiae Studia , 2004, DOI: 10.1590/s1678-31662004000300006
Commentary on comparison of MODIS snow cover and albedo products with ground observations over the mountainous terrain of Turkey
A. ü. ?orman,Z. Akyürek,A. ?ensoy,A. A. ?orman
Hydrology and Earth System Sciences Discussions , 2006,
Abstract: The MODerate-resolution Imaging Spectroradiometer (MODIS) snow cover product was evaluated by Parajka and Bl sch (2006) over the territory of Austria. The spatial and temporal variability of the MODIS snow product classes are analyzed, the accuracy of the MODIS snow product against numerous in situ snow depth data are examined and the main factors that may influence the MODIS classification accuracy are identified in their studies. The authors of this paper would like to provide more discussion to the scientific community on the "Validation of MODIS snow cover images" when similar methodology is applied to mountainous regions covered with abundant snow but with limited number of ground survey and automated stations. Daily snow cover maps obtained from MODIS images are compared with ground observations in mountainous terrain of Turkey for the winter season of 2002–2003 and 2003–2004 during the accumulation and ablation periods of snow. Snow depth and density values are recorded to determine snow water equivalent values at 19 points in and around the study area in Turkey. Comparison of snow maps with in situ data show good agreement with overall accuracies in between 62 to 82 percent considering a 2-day shift during cloudy days. Studies show that the snow cover extent can be used for forecasting of runoff hydrographs resulting mostly from snowmelt for a mountainous basin in Turkey. MODIS-Terra snow albedo products are also compared with ground based measurements over the ablation stage of 2004 using the automated weather operating stations (AWOS) records at fixed locations as well as from the temporally assessed measuring sites during the passage of the satellite. Temporarily assessed 20 ground measurement sites are randomly distributed around one of the AWOS stations and both MODIS and ground data were aggregated in GIS for analysis. Reduction in albedo is noticed as snow depth decreased and SWE values increased.
Biópsia de pele e seu estudo histológico: por quê? para quê? como? parte II
Werner, Betina;
Anais Brasileiros de Dermatologia , 2009, DOI: 10.1590/S0365-05962009000500010
Abstract: skin biopsy is a common procedure in dermatology practice. the cost-benefit ratio, though, can be unfavorable if attention is not paid to specific details in performing a skin biopsy. for example, proper selection of anatomical site and best lesion to perform a biopsy are very important. the present article discusses those and other variables that directly influence the satisfaction level of the dermatologist who undertakes it, the pathologist who analysis it and the patient of whom the biopsy is taken.
Biópsia de pele e seu estudo histológico: Por quê? Para quê? Como? Parte I
Werner, Betina;
Anais Brasileiros de Dermatologia , 2009, DOI: 10.1590/S0365-05962009000400010
Abstract: histopathologic study is considered gold-standard for diagnosis of skin lesions, either neoplastic or inflammatory, most of the times. to take the most out of a skin biopsy, physicians should be aware of the reasons for performing the procedure followed by microscopic examination, the objectives to be achieved and the best manner to do the biopsy, including the best technique and best anatomical site for a particular disease.
Arbeitsidentit t und widersprüchliche Erfahrungen in der Lebensgeschichte von Sozialarbeiter/innen und Krankenschwestern Work Identity and Contradictory Experiences of Welfare Workers in a Life-history Perspective Identidad de trabajo y experiencias contradictorias de trabajadores del bienestar en una perspectiva de historia de vida
Betina Dybbroe
Forum : Qualitative Social Research , 2012,
Abstract: Ver nderungen im Gesundheitswesen und der sozialen Wohlfahrt fordern die Berufsidentit ten von Krankenschwestern und Sozialarbeiter/innen in Skandinavien heraus. Diejenigen, die von solchen Ver nderungen betroffen sind, werden durch das neue psychosoziale Setting an ihren Arbeitspl tzen auch pers nlich tangiert. In diesem Aufsatz wird ein Forschungsprojekt mit d nischen Krankenschwestern und Sozialarbeiter/innen vorgestellt. Der Fokus liegt auf der sich ver ndernden Arbeitsidentit t, und dieser subjektive Entwicklungsprozess macht einen besonderen theoretischen und methodologischen Forschungsansatz notwendig: Das Verstehen von lebensgeschichtlicher und beruflich bedingter Erfahrung wird in der Perspektive von Alfred LORENZER's Kulturtheorie untersucht. Es geht darum, den gesellschaftlichen Wandel zu verstehen, der den Arbeitsplatz, die Berufsausübung und die jeweilige Lebensgeschichte in besonderer Weise betrifft. Zwei Konzepte von LORENZER, ein theoretisches und ein methodisches, n mlich die "Interaktionsform" und das "szenische Verstehen", wurden in der Untersuchung angewendet, weil man mit ihnen eine optimale methodische Perspektive zur Analyse der Arbeitserfahrung entwickeln kann. Eine ethnografische und lebensgeschichtlich orientierte Untersuchung von jungen Krankenschwestern in Krankenh usern wird vorgestellt, in welchen die Arbeit geschlechtsspezifisch organisiert ist und nur geringe M glichkeiten zu einer Identifikation mit der Arbeit bestehen. Es werden soziale und pers nliche Dynamiken untersucht, in denen habituelle und kreative Orientierungen und Praktiken in der Gesundheitsversorgung sichtbar gemacht werden. In gleicher Weise werden die widersprüchlichen Ver nderungen der Arbeit – ihre Vermarktung und ihre Demokratisierung – analysiert. URN: http://nbn-resolving.de/urn:nbn:de:0114-fqs1203214 Transformation of the welfare sectors challenge professional identities of care and welfare workers in Scandinavia. At the same time welfare and care workers take part in these changes and are changed in the psycho-social setting of the workplace. This article presents research about care work in Denmark with a focus on subjective processing of work identity, applying a psycho-societal theoretical and methodical approach. A life historical and experiential understanding of Alfred LORENZER's cultural theory is applied to understand societal transformations, here in the work place and of professionals in relation to their present scene of work and in relation to their life history. Two concepts are applied, interaction form and scenic understanding, becaus
Wenn Sie auch schon aus dem Weg geraümet würde, es bliebe doch dergleichen“ “If she would also already be done away with, it would still remain the same”
Betina Aumair
querelles-net , 2005,
Abstract: Akribisch hat die Literaturwissenschaftlerin Angela Steidele dem nur fragmentarisch überlieferten Leben der vermutlich letzten Frau, die wegen der so genannten Unzucht mit einer anderen Frau“ (S. 1) in Deutschland hingerichtet worden ist, nachgespürt. Die Geschichte der Liebe zwischen Frauen ist eine noch weitgehend ungeschriebene“, insbesondere gilt das, wie Steidele im Nachwort schreibt, für die Zeit von 1500 bis 1850. Steidele gelingt mit dieser Einzelstudie ein Stück deutscher Sozial- und Geschlechterforschung, in der, wie sie selbst meint, die Abenteuerin Catharina Margaretha Linck alias Anastasius Lagrantinus Rosenstengel ihren würdigen Platz“ (S. 152) findet. The literary scholar Angela Steidele meticulously traces the sole fragmentarily documented life of the assumedly last woman in Germany to be executed “because of so-called sodomy with another woman” (1). The history of love between women is “still to a great extent unwritten,” this particularly true, as Steidele in the afterward writes, for the time period between 1500 and 1850. With this monograph, Steidele succeeds in constructing a piece of German social and gender research in which, as she herself suggests, “the adventurer Catharina Margaretha Linck alias Anastasius Lagrantinus Rosenstengel” finds “her honorable place” (152).
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