Kawasaki Disease presenting with intussusception: a case report

A 3 yr old boy presented with abdominal pain, fever and red jelly stools. Intussusception was diagnosed and effectively reduced with air insufflation. However, despite an improvement in his clinical condition, the child remained febrile and miserable; 5 days later he developed characteristic signs of Kawasaki disease and was treated with intravenous immunoglobulin and high dose aspirin with good results. Intussusception prior to the typical features of Kawasaki disease has not been described previously in the English literature. This case illustrates a novel presentation of Kawasaki disease

Tunable crystal structure and proton conductivity of lanthanide nitrilotrismethylphosphonates

Metal phosphonates are multifunctional solids with remarkable stability and proton conducting properties owing to their structure is usually composed of extended hydrogen-bond networks that favor proton transfer pathways [1]. Moreover, these properties can be enhanced by appropriate modification of the synthesis conditions [2, 3]. In this communication, a new family of isostructural 2D layered compounds based on lanthanide nitrilotris-methylphosphonates is reported. These compounds have been isolated at room temperature and have the general formula Ln[N(CH2)3(PO3H2)2(PO3H)(H2O)]SO4·2H2O (Ln= Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er and Yb). The coordination environment of Ln3+ is composed by eight oxygen atoms from three different ligands and two oxygens from bound waters. This connectivity creates positive charged layers connected to sulfate ions through hydrogen-bonds. These compounds show promising proton conductivity with values ranging between 7.6·10-2 and 3.8·10-2 S·cm-1 at 80 °C and 95% RH and low activation energy corresponding to Grotthuss-type proton transfer mechanism. In addition, a structural transformation occurs at T > 70 °C accompanied by a remarkable enhanced conductivity. Studies on the structure-properties relationships will be discussed.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. MINECO: MAT2016-77648-R Junta Andalucía: P12-FQM-1656 y FQM-11

Influencia de la rotación de personal en la productividad del área de créditos grupales de la empresa Compartamos Financiera en la ciudad de Trujillo en el año 2016

El presente trabajo de invest igación t itulado “Influencia de la rotación de personal en la productividad del área de créditos grupales de la empresa Compartamos Financiera en la ciudad de Trujillo en el año 2016” tuvo como objetivo determinar el impacto de la rotación de personal en la productividad del área de créditos grupales de la empresa mencionada. La hipótesis es que la rotación de personal influye de manera negativa en el rendimiento de la productividad. La población estuvo compuesta por 68 colaboradores de las tres agencias de la empresa en Trujillo y la muestra fue de 34 de Compartamos Financiera de Trujillo Centro, Trujillo Natasha y Trujillo Porvenir. Se utilizó el diseño de contrastación explicativo y, como instrumento de recojo de datos, la encuesta. Entre los resultados más relevantes del estudio se consideró que el índice de la rotación de personal tiene un promedio de 8.17% desde enero a setiembre del presente año. Se concluye que la influencia de la rotación de personal influye de manera negativa en la productividad del área de créditos grupales de la empresa compartamos financiera en la ciudad de Trujillo en el año 2016.This research paper entitled ""Influence of turnover in the productivity of the group lending company Financiera Compartamos in the city of Trujillo in 2016"" aimed to determine the impact of turnover on productivity the area of group loans of the company mentioned. The hypothesis is that staff turnover has a negative influence on productivity performance. The population consisted of 68 employees from the three agencies of the company in Trujillo and the sample was 34 Compartamos Financial Center of Trujillo, Trujillo and Trujillo Natasha Porvenir. explanatory design contrasting and as I gather instrument data, the survey was used. Among the most important results of the study they are considered the rate of staff turnover has averaged 8.17. It is concluded that the influence of staff turnover has a negative impact on productivity in the area of group lending company financial share in the city of Trujillo in 2016.Tesi

Exportaciones e importaciones Perú - Australia a raíz de la firma de su acuerdo comercial

En los últimos años la dinámica comercial entre países ha tomado una gran importancia dentro de la economía de cada uno de ellos. Debido a esto los gobiernos de turno implementan medidas que regulan y favorecen al mercado nacional, obteniendo beneficios de los mercados extranjeros. Asimismo, las exportaciones e importaciones entre países resultan ser importantes para satisfacer las necesidades de los sectores económicos, empresas y consumidores finales. En consecuencia, nacen los acuerdos comerciales entre países, los cuales tiene como propósito facilitar el ingreso y salida de los productos y/o servicios, entre otros beneficios que se plantean dentro del acuerdo. El objetivo de esta investigación fue calcular las exportaciones e importaciones realizadas por el Perú hacia y desde Australia a raíz de su acuerdo comercial. La investigación se resolvió de manera cuantitativa, descriptiva, de corte longitudinal, experimental y una sola muestra. La población estuvo conformada por las exportaciones e importaciones registrada en la Superintendencia Nacional de Aduanas y Administración Tributaria (SUNAT) y la muestra fueron todas las Declaraciones Aduaneras de Mercancías (DAM) realizadas entre Perú y Australia entre los años 2010 –2020. A través de esta información, se pudieron alcanzar los objetivos. En conclusión, entre el 2019 –2020 con la entrada en vigencia del acuerdo comercial entre ambos países, las exportaciones crecieron un 8% y las importaciones crecieron en un 2%. Asimismo, se propuso líneas de tendencia en tres productos de exportación.Campus Chiclay

Energy invariance in capillary systems

We demonstrate the continuous translational invariance of the energy of a capillary surface in contact with reconfigurable solid boundaries. We present a theoretical approach to find the energy-invariant equilibria of spherical capillary surfaces in contact with solid boundaries of arbitrary shape and examine the implications of dynamic frictional forces upon of a reconfiguration of the boundaries. Experimentally, we realise our ideas by manipulating the position of a droplet in a wedge geometry using lubricant-impregnated solid surfaces, which eliminate the contact-angle hysteresis and provide a test bed for quantifying dissipative losses out of equilibrium. Our experiments show that dissipative energy losses for an otherwise energy-invariant reconfiguration are relatively small, provided that the actuation timescale is longer than the typical relaxation timescale of the capillary surface. We discuss the wider applicability of our ideas as a pathway for liquid manipulation at no potential energy cost in low-pinning, low-friction situations

Failure to detect infection by oral polio vaccine virus following natural exposure among inactivated polio vaccine recipients

While oral polio vaccine (OPV) has been shown to be safe and effective, it has been observed that it can circulate within a susceptible population and revert to a virulent form. Inactivated polio vaccine (IPV) confers protection from paralytic disease, but provides limited protection against infection. It is possible, then, that an IPV-immunized population, when exposed to OPV, could sustain undetected circulation of vaccine-derived poliovirus. This study examines the possibility of polio vaccine virus circulating within the United States (highly IPV-immunized) population that borders Mexico (OPV-immunized). A total of 653 stool and 20 sewage samples collected on the US side of the border were tested for the presence of poliovirus. All samples were found to be negative. These results suggest that the risk of circulating vaccine-derived poliovirus is low in fully immunized IPV-using populations in developed countries that border OPV-using populations

Contact-Angle Hysteresis and Contact-Line Friction on Slippery Liquid-Like Surfaces

Contact-line pinning and dynamic friction are fundamental forces that oppose the motion of droplets on solid surfaces. Everyday experience suggests that if a solid surface offers low contact-line pinning, it will also impart a relatively low dynamic friction to a moving droplet. Examples of such surfaces are superhydrophobic, slippery porous liquid-infused, and lubricant-impregnated surfaces. Here, however, we show that slippery omniphobic covalently attached liquid-like (SOCAL) surfaces have a remarkable combination of contact-angle hysteresis and contact-line friction properties, which lead to very low droplet pinning but high dynamic friction against the motion of droplets. We present experiments of the response of water droplets to changes in volume at controlled temperature and humidity conditions, which we separately compare to the predictions of a hydrodynamic model and a contact-line model based on molecular kinetic theory. Our results show that SOCAL surfaces offer very low contact-angle hysteresis, between 1 and 3°, but an unexpectedly high dynamic friction controlled by the contact line, where the typical relaxation time scale is on the order of seconds, 4 orders of magnitude larger than the prediction of the classical hydrodynamic model. Our results highlight the remarkable wettability of SOCAL surfaces and their potential application as low-pinning, slow droplet shedding surfaces

Controlling the breakup of toroidal liquid films on solid surfaces

The breakup of a slender filament of liquid driven by surface tension is a classical fluid dynamics stability problem that is important in many situations where fine droplets are required. When the filament is resting on a flat solid surface which imposes wetting conditions the subtle interplay with the fluid dynamics makes the instability pathways and mode selection difficult to predict. Here, we show how controlling the static and dynamic wetting of a surface can lead to repeatable switching between a toroidal film of an electrically insulating liquid and patterns of droplets of well-defined dimensions confined to a ring geometry. Mode selection between instability pathways to these different final states is achieved by dielectrophoresis forces selectively polarising the dipoles at the solid-liquid interface and so changing both the mobility of the contact line and the partial wetting of the topologically distinct liquid domains. Our results provide insights into the wetting and stability of shaped liquid filaments in simple and complex geometries relevant to applications ranging from printing to digital microfluidic devices

Estudio de la pérdida de capacidad hidráulica del río Chicama en el sector galaxia

El presente trabajo de investigación se desarrolló en el Rio Chicama, Sector Galaxia, para lo cual se hizo un levantamiento topográfico, muestreo de los sedimentos de fondo del cauce del río para su clasificación granulométrica, modelamiento numérico unidimensional y bidimensional con el software HEC RAS V.5.0.7., y diseño de defensas ribereñas. El objetivo principal de esta investigación fue realizar un estudio para determinar los factores que influyen en la pérdida de capacidad hidráulica del río Chicama en el sector Galaxia debido a que el río tiende a extenderse y hacer varios brazos. La metodología utilizada para el pre-procesamiento y post-procesamiento de datos fue generar diferentes escenarios del comportamiento del flujo del Rio Chicama. Los resultados obtenidos mediante la simulación hidráulica unidimensional y bidimensional a través del software HEC-RAS V.5.0.3, sirvió para identificar las características geométricas e hidráulicas y posterior diseño de defensas ribereñas. Las defensas ribereñas que se han diseñado son de tipo longitudinal con diques de material propio del río y revestidas con roca de diámetro mayor a 1m. Esta defensa cuenta con una protección de una uña para protegerla de la socavación general.The present research work is located in the Chicama River, Galaxia Sector, for which a topographic survey was carried out, sampling the bottom sediments of the riverbed for granulometric classification, one-dimensional and two-dimensional numerical modeling with the HEC RAS software V. 5.0.7., And design of river defenses. The main objective of this research was to conduct a study to determine the factors that influence the loss of hydraulic capacity of the Chicama River in the Galaxy sector because the river had to extend and make several arms. The methodology used for the prior and subsequent processing of the data processing was to generate different movements of the Chicama River flow behavior. The results detected by the one-dimensional and two-dimensional hydraulic simulation through the HEC-RAS V.5.0.3 software, served to identify the geometric and hydraulic characteristics and subsequent design of riverine defenses. The riverside defenses that have been designed are of longitudinal type with dykes of own material of the river and covered with rock of diameter greater than 1m. This defense has a nail protection to protect general undercutting.Tesi