A hybrid CA-PDE Model of chlamydia trachomatis infection in the female genital tract

Chlamydia trachomatis is amongst the most common sexually transmitted diseases in the world and when left untreated, may lead to serious sequelae particularly in women such as pelvic inflammatory disease, ectopic pregnancy and infertility. Currently, most mathematical modelling in the literature regarding Chlamydia is based on time dependent differential equations. The serious pathology associated with C. trachomatis occurs when the chlamydial infection ascends to the upper genital tract. But no modelling study has investigated the important spatial aspects of the disease. In this work, we include spatiotemporal considerations of the progression of chlamydial infection in the genital tract. This novel direction is achieved using cellular automata modelling with probabilistic decision processes. In this presentation, the modelling strategy will be described, as well as its relationship with existing models and the advances in understanding that are achieved with such a model. Such an approach provides valuable insights into disease progression and will lead to experimentally testable predictions and a basis for further investigation in this area

Medical imaging environment : a multi-agent system for a computer clustering based multi-display

This paper presents a solution to minimize a problem that normally arises from the huge amount of images that a radiologist usually has to interpret. A multi-agent system that implements a multi-display for medical imaging based on computer clustering of normal personal computers is therefore described, as well as the multi-agent architecture that caters for the system evolution. An evaluation study was performed and its results are presented

Registro, Aplicación y Pago del impuesto sobre la renta (IR) en la empresa La Providencia, S.A., en la ciudad de Matagalpa durante el año 2015

El presente Seminario de Graduación tiene como propósito analizar el Impuesto Sobre la Renta (IR) y sobre sus registro, aplicación y pago en la empresa la Providencia S.A en los departamentos de Matagalpa, Managua, y Jinotega. Es de mucha importancia conocer el Impuesto sobre la Renta (IR) ya que beneficia a contadores como empresa para que tengan un buen registro se han correctamente aplicados así como sus pagos se realizan en tiempo y forma. Analizamos los registro, aplicación y pago del Impuesto sobre la Renta (IR) en la empresa con el propósito de mejorar en el desarrollo de la implementación de estos impuestos la cual da mayor fortaleza y mejor razonamiento en las operaciones. También este estudio nos proporcionó a nosotros como alumnos para conocer algo más del campo laboral en las que se realizan diferentes actividades que relacionan principalmente con los registro aplicación y pago de los impuestos, que es uno de los conocimientos más importante que tenemos que conocer como Contadores Públicos. Identificamos en la empresa La Providencia S.A según la normativas registró, aplicó y pagó el Impuesto sobre la Renta (IR), también determinamos cuales son los procedimientos sobre el registro aplicación y pago de dicho impuesto y concluimos que la empresa registra, aplica y paga el impuesto ya que es una empresa que realiza sus ingresos a través de la bolsa agropecuaria, la cual realiza pago de IR anual, Pago de Mínimo Definitivo y hace las retenciones en la fuent

Characterization of a continuous feline mammary epithelial cell line susceptible to feline epitheliotropic viruses.

Mucosal epithelial cells are the primary targets for many common viral pathogens of cats. Viral infection of epithelia can damage or disrupt the epithelial barrier that protects underlying tissues. In vitro cell culture systems are an effective means to study how viruses infect and disrupt epithelial barriers, however no true continuous or immortalized feline epithelial cell culture lines are available. A continuous cell culture of feline mammary epithelial cells (FMEC UCD-04-2) that forms tight junctions with high transepithelial electrical resistance (>2000Omegacm(-1)) 3-4 days after reaching confluence was characterized. In addition, it was shown that FMECs are susceptible to infection with feline calicivirus (FCV), feline herpesvirus (FHV-1), feline coronavirus (FeCoV), and feline panleukopenia virus (FPV). These cells will be useful for studies of feline viral disease and for in vitro studies of feline epithelia

К вопросу о построении универсальной тепловой диаграммы идеального газа

The application of optical coherence tomography OCT in tissue engineering facilities offers great potential for the automated detection of defects or inhomogeneities in tissue products. This non-invasive and non-destructive measurement technique enables the high speed generation of two dimensional cross sections of tissue with micron resolution. The integration of an OCT device into a tissue production facility allows the monitoring and quality control of tissue engineering products. By the selective exclusion of tissue products with insufficient quality features a high degree in production standard is guaranteed. In a first study, OCT tomograms of artificial skin equivalents were acquired and compared with microscopic images of associated histologies. As a result, a well-defined analogy of the obtained images is presented. The most common defect in terms of hole structures that occurs due to a procedural steps could be detected. Further characteristics like the topogra phy, homogeneity and layer structure was analysed. Hence, OCT provides a powerful measurement technique to monitor the quality of tissue products in automated tissue engineering facilities

Increasing the accuracy of laser flash analysis using numerical algorithms robust to noise and systematic errors

The laser flash method is highly regarded due to its applicability to a wide temperature range, from cryogenic temperatures to the melting point of refractory metals, and to extreme environments involving radioactive or hazardous materials. Although instruments implementing this method are mostly produced on a commercial basis by major manufacturers, there is always room for improvement both in terms of experimental methods and data treatment procedures. The measurement noise, either due to the detector performance or electromagnetic interferences, presents a significant problem when accurate determination of thermal properties is desired. Noise resilience of the laser flash method is rarely mentioned in published literature; there are currently no data treatment procedures which could guarantee adequate performance under any operating conditions. In this paper, a computational framework combining finite-difference solutions of the heat conduction problem with nonlinear optimization techniques based on the use of quasi-Newton direction search and stochastic linear search with the Wolfe conditions is presented. The application of this framework to data with varying level of noise is considered. Finally, cross-verification and validation using an external standard, a commercial and an in-house built laser flash instrument are presented. The open-source software implementing the described computational method is benchmarked against its industrial counterpart.Comment: 15 pages, 11 figure

Die Analanhänge der Larve von Platycnemis pennipes (Pallas, 1771) - eine Richtigstellung (Odonata: Zygoptera).

Im vorliegenden Beitrag wird der Popova (1953) unterlaufene Fehler bei der Darstellung der Analanhänge der Larve von Platycnemis pennipes (Pallas) berichtigt und durch Abbildungen verdeutlicht.RésuméLe présent travail rectifie une erreur de Popova (1953) concernant les branchies caudales de la larve de Platycnemis pennipes (Pallas). Cette rectification est soutenue par des dessins en détail et une photo.Im vorliegenden Beitrag wird der Popova (1953) unterlaufene Fehler bei der Darstellung der Analanhänge der Larve von Platycnemis pennipes (Pallas) berichtigt und durch Abbildungen verdeutlicht.RésuméLe présent travail rectifie une erreur de Popova (1953) concernant les branchies caudales de la larve de Platycnemis pennipes (Pallas). Cette rectification est soutenue par des dessins en détail et une photo