Effect of sex on survival of bovine in vitro produced embryos vitrified by Cryotop.

Proceedings of the 31st Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Cabo de Santo Agostinho, PE, Brazil, August 17th to 19th, 2017. Abstract

Power to mechanical power to minimize ventilator-induced lung injury?

Mechanical ventilation is a life-supportive therapy, but can also promote damage to pulmonary structures, such as epithelial and endothelial cells and the extracellular matrix, in a process referred to as ventilator-induced lung injury (VILI). Recently, the degree of VILI has been related to the amount of energy transferred from the mechanical ventilator to the respiratory system within a given timeframe, the so-called mechanical power. During controlled mechanical ventilation, mechanical power is composed of parameters set by the clinician at the bedside-such as tidal volume (VT), airway pressure (Paw), inspiratory airflow (V'), respiratory rate (RR), and positive end-expiratory pressure (PEEP) level-plus several patient-dependent variables, such as peak, plateau, and driving pressures. Different mathematical equations are available to calculate mechanical power, from pressure-volume (PV) curves to more complex formulas which consider both dynamic (kinetic) and static (potential) components; simpler methods mainly consider the dynamic component. Experimental studies have reported that, even at low levels of mechanical power, increasing VT causes lung damage. Mechanical power should be normalized to the amount of ventilated pulmonary surface; the ratio of mechanical power to the alveolar area exposed to energy delivery is called "intensity." Recognizing that mechanical power may reflect a conjunction of parameters which may predispose to VILI is an important step toward optimizing mechanical ventilation in critically ill patients. However, further studies are needed to clarify how mechanical power should be taken into account when choosing ventilator settings

Rhinus evelinae sp.n., uma nova espécie de Bulimulidae (Gastropoda, Sigmurethra), do sudeste brasileiro

Com base em caracteres conquiológicos e anatômicos, é descrita uma nova espécie do gênero Rhinus Albers, 1860, R. evelinae sp. n., procedente da Região Sudeste do Brasil. Conquiologicamente, a nova espécie é comparada com R. obeliscus (Haas, 1936) e com R. pubescens (Moricand, 1846). Seus dados anatômicos são relacionados aos únicos existentes na literatura (Breure, 1978, 1979), envolvendo R. ciliatus (Gould, 1846)

BENCHMARKING OF TWO SYSTEMS FOR TRANSMISSION OF MOTION FOR A DOUBLE ACTION STIRLING ENGINE

In a four-piston Stirling engine, Siemens configuration, the displacement of the pistons is governed by the motion transmission element, which converts the reciprocating motion of pistons into rotary motion. This study aimed to evaluate the influence of the geometry of the transmission element in the mechanical efficiency of a Stirling engine. Analyses were performed using a mathematical computer simulation that uses the geometric and operating data of the engine to calculate the mechanical power and efficiency through a first order thermodynamic mathematical model, also known as the Schmidtmodel. First, an analysis was performed to evaluate the mechanical efficiency of the transmission element with a sinusoidal curve surface. Later, it was implemented in the transmission mechanism a segment based straight plans surface, and then the same analysis was performed with this new transmission element. The results showed that using the transmission element with segment based straight plans the engine showed a significant increase in efficiency. Moreover, one can observe an increase in the vibration of the system, making it necessary to develop an appropriate system for balancing

Banco de dados geográfico sobre a cafeicultura mineira: organização lógica e inserção de dados.

Os sistemas de informações geográficas (SIG) foram desenvolvidos com o objetivo de facilitar o tratamento de um volume cada vez maior e mais preciso de informações sobre a superfície terrestre e suas questões ambientais. Na utilização para a cafeicultura o SIG integra softwares para tratamento e armazenamento de dados segundo um modelo conceitual predefinido. A partir da definição deste modelo iniciou-se o armazenamento dos dados, em um Sistema de Gerenciamento de Banco de Dados (SGBD). A ferramenta escolhida para o gerenciamento dos dados foi o PostgreSQL pois este é um SGBD objeto-relacional e de código aberto, mantido em constantes atualizações gratuitas pela Comunidade Brasileira do PostgreSQL 1. Devido ao grande número de atualizações, o PostgreSQL é extensível, sendo utilizado para dar suporte à diversos tipos de aplicações desde dados simples à aplicações mais complexas, bem como seus metadados. Para a integração e o armazenamento dos dados foi utilizado o sistema de informação geográfico SPRING 2. O SPRING é um software gratuito para criação e gerenciamento de banco de dados geográficos, possuí funções para processamento de imagens, análises espaciais, modelagem numérica de terreno e consulta a banco de dados espaciais. No acesso aos dados geográficos foi utilizado um tipo de arquitetura conhecida como ?Arquitetura Dual?. A principal vantagem desta arquitetura consiste na separação das funcionalidades na qual o gerenciamento dos metadados é feita pelo SGBD, pois os mecanismos de transação, recuperação a falhas, concorrência, integridade dos dados e indexação podem ser usados para a parte não espacial dos dados, enquanto que a responsabilidade do gerenciamento dos dados geográficos é realizada pelo SPRING. Portanto, o objetivo principal deste trabalho foi inserir e organizar dados geográfico sobre pesquisas realizadas pela EPAMIG relacionadas á cafeicultura mineira

Evaluating oral health-related quality of life measure for children and preadolescents with temporomandibular disorder

Background: Oral health-related quality of life (OHRQoL) in children and adolescents with signs and symptoms of temporomandibular disorder (TMD) has not yet been measured. This study aimed to evaluate the validity and reliability of OHRQoL measure for use in children and preadolescents with signs and symptoms of TMD.Methods: Five hundred and forty-seven students aged 8-14 years were recruited from public schools in Piracicaba, Brazil. Self-perceptions of QoL were measured using the Brazilian Portuguese versions of Child Perceptions Questionnaires (CPQ)(8-10) (n = 247) and CPQ(11-14) (n = 300). A single examiner, trained and calibrated for diagnosis according to the Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD), examined the participants. A self-report questionnaire assessed subjective symptoms of TMD. Intraexaminer reliability was assessed for the RDC/TMD clinical examinations using Cohen's Kappa (kappa) and intraclass correlation coefficient (ICC). Criterion validity was calculated using the Spearman's correlation, construct validity using the Spearman's correlation and the Mann-Whitney test, and the magnitude of the difference between groups using effect size (ES). Reliability was determined using Cronbach's alpha, alpha if the item was deleted and corrected item-total correlation.Results: Intraexaminer reliability values ranged from regular (kappa = 0.30) to excellent (kappa = 0.96) for the categorical variables and from moderate (ICC = 0.49) to substantial (ICC = 0.74) for the continuous variables. Criterion validity was supported by significant associations between both CPQ scores and pain-related questions for the TMD groups. Mean CPQ(8-10) scores were slightly higher for TMD children than control children (ES = 0.43). Preadolescents with TMD had moderately higher scores than the control ones (ES = 0.62; p < 0.0001). Significant correlation between the CPQ scores and global oral health, as well as overall well-being ratings (p < 0.001) occurred, supporting the construct validity. the Cronbach's alphas were 0.93 for CPQ(8-10) and 0.94 for CPQ(11-14). for the overall CPQ(8-10) and CPQ(11-14) scales, the corrected item-total correlation coefficients ranged from 0.39-0.76 and from 0.28-0.73, respectively. the alpha coefficients did not increase when any of the items were deleted in either CPQ samples.Conclusions: the questionnaires are valid and reliable for use in children and preadolescents with signs and symptoms of temporomandibular disorder.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Univ Estadual Campinas, Piracicaba Dent Sch, Dept Pediat Dent, Piracicaba, SP, BrazilUniversidade Federal de São Paulo, Dept Biol Sci, Diadema, SP, BrazilUniversidade Federal de São Paulo, Dept Biol Sci, Diadema, SP, BrazilFAPESP: 2008/00325-9Web of Scienc