Voltammetric screening of electrodes in fused salt electrolytes

Measuring conductivity, freezing point, and volt-ampere characteristics of halide melts for battery feasibilit

Estimating Relationships Between Arsenic Exposure Through Rice Consumption and Disease

Arsenic (As) is a carcinogen and developmental toxicant with significant detrimental health outcomes associated with early life exposure. Until recently, the potential for exposure to As via food in the US was considered minimal. Recent data suggest that rice may contain elevated levels of inorganic arsenic (iAs) and dimethylarsinic acid (DMA), which are associated with adverse health outcomes. In order to assess whether rice consumption could introduce exposure at levels of As associated with disease, As levels in 1,343 rice-based products from the FDA were analyzed and compared to three constructed daily exposure models. The majority of samples had elevated levels of As and an average single serving of rice, and many rice-products, either meets or exceeds a child's daily modeled exposure threshold. Estimates suggest average lifetime rice consumption equates to exposure levels of As known to be associated with elevated risk for lung and bladder cancer.Master of Scienc

Evaluación de Cinco Dosis de Hongos Micorrícicos en el Enraizamiento de Plantas De Macadamia Integrifolia, De Dos Distintas Edades, Pueblo Nuevo, Suchitepéquez.

ABSTRACT The macadamia crop needs care in all its stages of growth to have an adequate development in the final field and avoid having a weak plant. One of the parts of the plant that needs to be strengthened from an early age is the root, since it is of a superficial type and is susceptible to wind, diseases and pests. Due to the type of root that the macadamia plants have, at the Paris and Joven Francia farm, the aim is to strengthen the root system in young plants and replant that are found around the farm with biological products, such as beneficial fungi. In this experiment, the effect of five doses of arbuscular mycorrhizal fungus on the roots of macadamia plants in the nursery stage of two and a half and four months of age was evaluated, to find out which of these doses gives a better effect. The age of the plants was measured from the transplant to the bag of the same. The experiment had a completely randomized design with six treatments and three repetitions, the treatment doses were as follows: 0.25cc, 0.37cc, 0.5cc, 0.63cc and 0.75cc Colony Forming Units (UFC) per plant and relative control without any dose applied

Incorporating epigenetic data into the risk assessment process for the toxic metals arsenic, cadmium, chromium, lead, and mercury: strategies and challenges

Exposure to toxic metals poses a serious human health hazard based on ubiquitous environmental presence, the extent of exposure, and the toxicity and disease states associated with exposure. This global health issue warrants accurate and reliable models derived from the risk assessment process to predict disease risk in populations. There has been considerable interest recently in the impact of environmental toxicants such as toxic metals on the epigenome. Epigenetic modifications are alterations to an individual's genome without a change in the DNA sequence, and include, but are not limited to, three commonly studied alterations: DNA methylation, histone modification, and non-coding RNA expression. Given the role of epigenetic alterations in regulating gene and thus protein expression, there is the potential for the integration of toxic metal-induced epigenetic alterations as informative factors in the risk assessment process. In the present review, epigenetic alterations induced by five high priority toxic metals/metalloids are prioritized for analysis and their possible inclusion into the risk assessment process is discussed

DWT Based OFDM with DAPSK Modulation for Power Line Communication Systems

C The idea of using power line systems for energy transmission as well as for data transmission is an alternative to wireless and wired communication systems. Communicating over the existing power line is quite advantageous in terms of cost. Power line systems are subject to frequency selective fading due to intense ambient noise and multipath transmission in the transmission environment. To overcome this problem, a multi carrier modulation idea has been introduced. In this paper, the performance of discrete wavelet transform based differentially encoded amplitude - phase shift keying modulated orthogonal frequency division multiplexing systems is investigated on power line channel. As the power line channel has impulsive noise effect, the time and frequency localization of the wavelet transform improves the performance. In addition, since the cyclic prefix is not used in wavelet transform based systems, the bandwidth efficiency is high. Simulation results show that the proposed structure is robust to interference and multipath effects, and that no channel estimation is needed because differential modulation is used

Informe final de servicios realizados en el Laboratorio de Control de Calidad de Plagas, del Departamento de Agronomía, Ingenio Tululá S.A. San Andrés Villa Seca, Retalhuleu.

RESUMEN El documento presentado a continuación constituye el informe final de los servicios realizados de la Práctica Profesional Supervisada (PPS) llevados a cabo en el laboratorio de control de calidad de plagas, perteneciente al Ingenio Tululá S. A. El cual contiene las actividades realizadas durante los meses de agosto a octubre del 2016. Las funciones del laboratorio iniciaron en el año 2012, en donde se llevan a cabo actividades que principalmente se enfocan en la evaluación, monitoreo y proyecciones de las plagas existentes de los cañaverales de las fincas cultivadas del Ingenio Tululá. En uno de los servicios realizados se adaptó la metodología utilizada por CENGICAÑA (Centro Guatemalteco de Investigación y Capacitación de la Caña de Azúcar) para la producción de nematodos entomopatógenos quienes parasitan a plagas de la raíz del cultivo de caña de azúcar (Sacchaum officinarum L.). Se obtuvo como resultado 20 millones de nematodos producidos. Esta práctica no se había llevado a cabo en el laboratorio del Ingenio, por lo cual se contó con la colaboración de CENGICAÑA para trasladar la metodología hacia el laboratorio de la unidad de práctica. También se llevó a cabo un ensayo en donde se evaluaron cinco productos químicos para el control de gallina ciega (Phyllophaga spp) pues en el Ingenio se ha observado la infestación de esta en las fincas del mismo. El motivo del ensayo es conocer cuál o cuáles de los productos tienen mayor control para la plaga y así considerarlo a nivel de campo. Entre los tratamientos evaluados se observó que tres de ellos tuvieron entre 70 y 80 por ciento de mortalidad en larvas de gallina ciega a los seis días de aplicación de los insecticidas

North American Aviation Report SR-1925

From abstract: The vapor pressure determination of solid ThF4 has been completed. Experiments to determine the heat of formation of ThF4 by studying the reaction of ThF4 with SiO2 are described