Search results for " stage"
showing 10 items of 616 documents
A General Investigation on the Differential Leakage Factor for Symmetrical and Asymmetrical Multiphase Winding Design
2020
This work provides an investigation based on a fast estimation of the degree of unbalance (D.U.%) and the differential leakage factor (&sigma
Brain and Breathing
2014
Breathing is an essential feature of living organisms, and control of breathing is a very complex topic in human physiology. Breathing is differently modulated under conditions of wakefulness and sleep, and ventilation decreases during sleep in normal subjects. In patients with respiratory diseases, sleep represents a very vulnerable condition, since gas exchange usually worsens, especially in REM sleep. Several types of respiratory events can occur during sleep, and knowledge of control of breathing is essential to understand their pathophysiology. This chapter summarizes the main characteristics of ventilation during both wakefulness and sleep, the differences found between genders, and t…
Evaluation of TKTL1 as a biomarker in serum of prostate cancer patients.
2016
Introduction Monocyte associated transketolase-like 1 (TKTL1) as a cancer biomarker has become popular with alternative practitioners, but plays no role in conventional medicine. This investigation evaluates the potential of serum TKTL1 as a biomarker for prostate cancer. Material and methods Patients (n = 66) undergoing curative radical prostatectomy (RPE) for biopsy-pro-ven PCa were included in the study. Controls (n = 10) were healthy, age-matched, male volunteers. 10 ml of peripheral blood was drawn from patients several days before surgery and from controls. Serum TKTL1 was measured using the ELISA method. Results The median age at tumor diagnosis was 66 years and median serum PSA was …
Unauthorized copying of software and levels of moral development: a literature analysis and its implications for research and practice
2004
. Several approaches for and against the unauthorized copying of software have been proposed. These approaches can be divided into two categories: moral reasoning and solution. These categories of approaches to unauthorized copying of software are scrutinized in the light of Kohlberg's theory of Cognitive Moral Development. The results suggest that most approaches presenting solutions to unauthorized copying of software have focused attention on the lower levels of moral development, while approaches at the highest stage are few and far between. No single approach covers all the stages of moral development. The implications of this analysis for practice and research are discussed.
Nonlinear dynamical aspects of the human sleep EEG.
1994
This article deals with the application of methods from the theory of nonlinear dynamical systems to EEG signals. Theoretical background, mathematical concepts and algorithms for the calculation of "non-linear parameters" are reviewed and influences of the structure of reconstructed data sets on the calculations are pointed out. We present results for the estimation of the correlation dimension D2 and the principal Lyapunov-exponent lambda 1 for sleep EEG data respectively from 10 and 15 healthy subjects corresponding to different sleep stages. Essentially, we found a statistically significant decrease of both D2 and lambda 1 as sleep moves towards slow wave stages. The values for REM sleep…
In situ behavior of wild long-snouted seahorse Hippocampus guttulatus Cuvier, 1829
2021
The study of behavior is one of the fundamental aspects of conservation biology. While for animals such as mammals there are well-defined protocols that have been applied for a long time, for marine animals, and fish in particular, studies are available for a limited number of species. The behavior of seahorses, for example, is poorly studied and in this work, we made a first attempt of using video recordings to analyze behavior of these endangered species in Mar Piccolo of Taranto (Southern Italy). The study presents preliminary data on behavioral activities and their comparisons among different life stages of Hippocampus guttulatus, namely females, males, and juveniles. Juveniles and fema…
El mito quinqui. Memoria y represión de las culturas juveniles en la transición postfranquista
2020
Este trabajo parte de una imagen inicial–el cuarto quinqui como habitación histórica–para plantear el estudio del fenómeno quinquillero en una dialéctica compleja entre mitología, historicidad y memoria. Me planteo confrontar el actual regreso de lo quinqui en relación con las emergencias de los supuestos quinquis históricos en el archivo de los años setenta. Se trata, sin duda, de una confrontación problemática. Mi trabajo se organiza en dos tiempos. Primero, se trata de deconstruir “el mito quinqui”, analizando sus características y razones tanto en su construcción actual, como regreso quinqui, como en su emergencia histórica. Y después se trata de pensar qué es lo que ese mito impide ver…
Self and Identity Development during Adolescence across Cultures
2015
The purpose is to show the dynamic of change and stability in the development of identity and self during adolescence. We present some basic differences between the development of self-perceptions and the development of identity according to Erikson's psychosocial formulation. The change and stability dynamics of identity development is subjected to critique from the perspective of the status paradigm as well as more recent theoretical models. The key role of the cultural context's inevitable influence on the development of identity and self-perceptions through the production of relevant cultural variations is also analyzed.
Geographical separation and physiology drive differentiation of microbial communities of two discrete populations of the bat Leptonycteris yerbabuenae
2020
In this paper, we explore how two discrete and geographically separated populations of the lesser long‐nosed bat (Leptonycteris yerbabuenae)—one in central and the other in the Pacific region of Mexico—differ in their fecal microbiota composition. Considering the microbiota–host as a unity, in which extrinsic (as food availability and geography) or intrinsic factors (as physiology) play an important role in the microbiota composition, we would expect differentiation in the microbiota of two geographically separated populations. The Amplicon Sequences Variants (ASVs) of the V4 region of the 16s rRNA gene from 68 individuals were analyzed using alpha and beta diversity metrics. We obtained a …
Ligand-based discovery of novel trypanosomicidal drug-like compounds: In silico identification and experimental support
2010
Abstract Two-dimensional bond-based linear indices and linear discriminant analysis are used in this report to perform a quantitative structure–activity relationship study to identify new trypanosomicidal compounds. A database with 143 anti-trypanosomal and 297 compounds having other clinical uses, are utilized to develop the theoretical models. The best discriminant models computed using bond-based linear indices provides accuracies greater than 90 for both training and test sets. Our models identify as anti-trypanosomals five out of nine compounds of a set of already-synthesized substances. The in vitro anti-trypanosomal activity of this set against epimastigote forms of Trypanosoma cruzi…