Mollusca Contagiosa

Mollusca contagiosa (MC) definiramo kao čestu virusnu infekciju kože uzrokovanu Molluscipox virusom (MCV) koja se viđa u djece i odraslih. Klinički se manifestira u obliku malih, umbiliciranih papula voštana sjaja. Dok su MC relativno česta u djece od 1. do 5. godine i mogu biti smještene bilo gdje na tijelu, njihova pojavnost u odraslih uglavnom se smatra spolno prenosivom infekcijom (engl. sexually transmitted infection, STI). MCV se može prenositi direktno s osobe na osobu ili autoinokulacijom. MCV u odraslih karakteristično zahvaća genitalnu regiju. Međutim, ekstragenitalni smještaj kod odraslih tipično se viđa u imunosuprimiranih bolesnika, osobito u bolesnika s HIV-om/AIDS-om. Prema novijim literaturnim podacima, pojava MC u HIV-pozitivnih bolesnika, smatra se dijelom sindroma imunosnog oporavka (engl. immune reconstitution inflammatory syndrome, IRIS). MC, stoga, u djece zahvaća podjednako oba spola, no, čini se da je incidencija u odrasloj populaciji veća kod muškaraca. Liječenje, koje nije uvijek nužno, može biti korisno u prevenciji daljnjeg prijenosa infekcije ili autoinokulacije. Nažalost, ne postoji etiološko liječenje MC, a većina postupaka koji se primjenjuju mehanička je, što katkad uzrokuje određeni stupanj nelagode ili boli. Osobitu pažnju treba posvetiti ekstragenitalno smještenim MC kod odraslih, kada bi svakako trebalo preporučiti obradu na HIV. I djecu i odrasle s MC trebalo bi podučiti da izbjegavaju češanje kože, kao i kontakte s drugom osobom (uglavnom spolni kontakti kod odraslih), kako bi se spriječio daljnji prijenos infekcije i/ili autoinokulacija. Osim toga, kod odraslih bolesnika s MC treba učiniti pažljiv probirna ostale STI te ih savjetovati o eventualnom liječenju i daljim postupcima.Mollusca contagiosa (MC) are defi ned as a common cutaneous viral infection caused by the Molluscipox virus (MCV) and affecting both children and adults. MC are clinically characterized by small, waxy, dome-shaped umbilicated papules. Whereas mollusca contagiosa are rather frequent in 1-5 year-old children and can be localized almost anywhere on the body, their appearance in adults is mostly regarded as a sexually transmitted infection (STI). MCV might be transmitted directly from person to person or by autoinoculation. MC in adults characteristically involve the genital area. However, the extragenital appearance of MC in adults is more typically seen in patients with immunosuppressive conditions, especially in HIV/AIDS patients. The onset of MC in HIV-positive individuals can be, according to the current literature data, regarded as a part of the immune reconstitution inflammatory syndrome (IRIS). It is most probable that MC affect both sexes equally in children’s age, whereas in adults they seem to be more frequent in men. Therapy may be beneficial in preventing transmission or autoinoculation. Unfortunately, there has been no etiological treatment of MC so far, and the majority of treatment options are mechanical, causing sometimes a certain degree of discomfort, or are not enough "evidence-based". Special attention should be given to the extragenital site of MC involvement in adults, and HIV serology testing should certainly be recommended in such patients. Both children and adults with MC should be educated to avoid scratching and skin contact with others to prevent transmission and autoinoculation. Besides, adult patients with MC should be carefully screened for other STIs and counseled appropriately

Load profile effect on durability of proton exchange membrane fuel cells

Proton Exchange Membrane Fuel Cells (PEMFC) are a promising technology for substitution of hydrocarbon powerdrives and battery based electrical supply systems. However, below-required durability is still an important factor that hinders its widespread use, thus, novel operating approaches are required to surpass this shortcoming. The present abstract presents a line of research directed towards the of analysis and definition of load profile characteristics in order to design controllers and operation strategies that optimize cell efficiency and durability. Degradation of the catalyst layer, commonly composed of platinum supported on carbon (Pt/C), mainly due to platinum loss by oxidation/dissolution and the resulting reduction of Electrochemical Active Surface Area (ECSA), is the main issue reducing the durability of PEMFC.Peer ReviewedPostprint (author's final draft

The Design of Enlargement of Sensor and Control Module of Mobile Robots Named Brontes

Tato bakalářská práce pojednává o navržení rozšíření senzorického a řídicího modulu mobilních robotů Brontes. K tomuto účelu byla vytvořena deska plošného spoje MX05, která svým připojením na řídicí desku LTR001.2 rozšiřuje její funkce. Konstrukce desky probíhala na základě požadavků a potřeb vycházejících z periferií robotu. Byl vytvořen její návrh obsahující kontrolní, ochranné a filtrační prvky. Dále byla deska realizována a osazena. Použitím MX05 vzniká značné zjednodušení zapojení a jsou rozšířeny původní funkce, které jsou využitelné nejen v robotech Brontes.This bachelor's thesis deals with the proposal of the sensory module and the control of mobile robots named Brontes enlargement. For this purpose a printed circuit board named MX05 was created, which extends its functionality via connection to the control board named LTR001.2. Construction of the board was conducted on the bases of the needs and requirements coming from robot peripherals. The proposal was created containing the control, protection and filtering features. Further, the board was realized and inhabited. Using MX05 creates a great simplification of wiring and there is implied the extension of the original features that are useful not only in robots Brontes.

Measurement of vibration in machine tools

Tato bakalářská práce je zaměřena na měření kmitání obráběcích strojů. Popisuje základní druhy kmitání, které se vyskytují během obráběcího procesu. Blíže seznamuje s přístroji, jež slouží k získávání a analýze vibrací.This bachelor thesis is focused on measurement of vibrations in machnine tools. It describes basic types of oscillation, which can be found during machining process. Inform about devices which are used for acquisition and analyzation vibration.

Nonlinear observation in fuel cell systems: a comparison between disturbance estimation and High-Order Sliding-Mode techniques

© . This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/This paper compares two Nonlinear Distributed Parameter Observers (NDPO) for the observation of a Proton Exchange Membrane Fuel Cell (PEMFC). Both NDPOs are based on the discretisation of distributed parameters models and they are used to estimate the state profile of gas concentrations in the anode and cathode gas channels of the PEMFC, giving detailed information about the internal conditions of the system. The reaction and water transport flow rates from the membrane to the channels are uncertainties of the observation problem and they are estimated throughout all the length of the PEMFC without the use of additional sensors. The first observation approach is a Nonlinear Disturbance Observer (NDOB) for the estimation of the disturbances in the NDPO. In the second approach, a novel implementation of a High-Order Sliding-Mode (HOSM) observer is developed to estimate the true value of the states as well as the reaction terms. The proposed observers are tested and compared through a simulation example at different operating points and their performance and robustness is analysed over a given case study, the New European Driving Cycle.Peer ReviewedPostprint (author's final draft

ХРИСТИЯНСЬКО-ПСИХОЛОГІЧНИЙ АНАЛІЗ СТАНОВЛЕННЯ ПРОФЕСІЇ «МЕДИЧНА СЕСТРА» В КРАЇНАХ ЄВРОПИ ТА США. (Christian and psychological analysis of the formation of profession of nurse in Europe and the USA.)

Стаття присвячена розгляду християнсько-психологічного аспекту становлення професії «медична сестра» в країнах Європи та Сполучених Штатах Америки. Ця тема є актуальною для розвитку сестринської справи в Україні, яка з часу здобуття незалежності взяла курс на відродження духовності, формування християнського світогляду і впровадження християнських принципів в усіх сфери суспільної життєдіяльності, а також має на меті інтеграцію в європейський та світовий медичний простір. (This article is dedicated to the issues of the Christian and psychological aspects of the formation of the profession of nurse in Europe and the United States of America. This topic is relevant for the development of nursing in Ukraine, as since independence of Ukraine has chosen to revive spirituality, and Christian faith formation, and implementation of Christian principles in all spheres of public life, and aims to integrate to the European and world medical community.

State observers design for PEMFC systems

Trabajo presentado al Iberconappice 2014 (Congreso Iberoamericano de Hidrógeno y Pilas de Combustible) celebrado en Barcelona del 15 al 17 de octubre.[EN]: This work presents the development of a nonlinear state observer to estimate the values of the different gas species concentration profiles in a Proton Exchange Membrane Fuel Cell (PEMFC) energy system. The selection of the estimated states is based on the functionality and performance of the observer. The implementation is based on the discretization of a PEMFC distributed 1+1D model. Forward and backwards discretization of the partial derivative equations is performed to take advantage of the boundary conditions of the problem. A second-order sliding-mode control super-twisting corrective input action is implemented to reduce the estimation error to zero in a finite amount of time. Simulation results are presented to show the performance of the observer to estimate the values of the states and to extract conclusions for future research work.[ES]: Este trabajo presenta el desarrollo de un observador de estados no lineal para la estimación de los perfiles de concentraciones en un sistema de energía basado en una Pila de Combustible de Membrana de Intercambio Protónico (PEMFC). La selección de los estados a estimar está basada en la funcionalidad y desempeño del observador. Las ecuaciones en derivadas parciales son discretizadas en dos sentidos a partir de un modelo 1+1D para aprovechar las condiciones de contorno del problema. Una acción de correción basada en métodos deslizantes de segundo orden es implementada para reducir el error de estimación a cero en un periodo finito de tiempo. Se presentan resultados de simulación para mostrar el rendimiento del observador en la reconstrucción de los valores de los estados y para extraer conclusiones para futuro trabajo de investigación.This work has been partially funded by the Spanish National Project DPI2011-25649 and the European project PUMA MIND SPI-JTI-FCH 303419.Peer Reviewe

Nonlinear predictive control for durability enhancement and efficiency improvement in a fuel cell power system

© . This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/In this work, a nonlinear model predictive control (NMPC) strategy is proposed to improve the efficiency and enhance the durability of a proton exchange membrane fuel cell (PEMFC) power system. The PEMFC controller is based on a distributed parameters model that describes the nonlinear dynamics of the system, considering spatial variations along the gas channels. Parasitic power from different system auxiliaries is considered, including the main parasitic losses which are those of the compressor. A nonlinear observer is implemented, based on the discretised model of the PEMFC, to estimate the internal states. This information is included in the cost function of the controller to enhance the durability of the system by means of avoiding local starvation and inappropriate water vapour concentrations. Simulation results are presented to show the performance of the proposed controller over a given case study in an automotive application (New European Driving Cycle). With the aim of representing the most relevant phenomena that affects the PEMFC voltage, the simulation model includes a two-phase water model and the effects of liquid water on the catalyst active area. The control model is a simplified version that does not consider two-phase water dynamics.Peer ReviewedPostprint (author's final draft