Description: This presentation discusses a research study that focuses on characterizing the changes in tissue morphology occurring in the emu ductus arteriosus during hatching. The author also explores what role apoptosis plays during the process of the ductus closure. The author found that the ductus arteriosus of the emu undergoes extensive changes during closure.

Description: This presentation discusses a study on independence and maneuverability related to regular exercise among non-institutionalized elderly adults. The results of this study could be helpful in discerning which adults would benefit from exercise intervention and if there are any health benefits from regular exercise.

Description: This presentation discusses research on respiratory and cardiovascular responses in internally pipped chicken embryos. During the internal pipping stage of hatching, oxygen exchange between the environment and developing embryo occurs at the chorioallantoic membrane (CAM) and lungs. At this point, oxygen uptake at the lungs (Vo2lung) accounts for 27% of the total oxygen uptake of the egg (Vo2total). The internally pipped embryo ventilates its lungs with hypoxic (12% O2) and hypercapnic (5% CO2) air. Employing dual gas exchangers at this stage should allow the internally pipped embryo to alter the lungs and CAM contribution to oxygen uptake. When exposed to hypoxia and hypercapnia, the externally pipped embryo alters gas exchange by increasing tidal volume. It is possible that the internally pipped embryo may have the ability to alter oxygen uptake at the lungs by changing ventilation patterns much like the externally pipped embryo. Prior to internal pipping, the embryo has patent ductus arteriosi and interatrial foramina that allow for a right-to-left shunt of blood flow away from the lungs and towards the CAM and systemic tissues. With the initiation of internal pipping, approximately 40% of blood flows through the pulmonary arteries to the lungs while 60% bypasses the lungs through ...

Description: This presentation discusses research on searching for the genes that encode nodulation symbiosis between medicago truncatula and rhizobia. Rhizobia are a group of bacteria that interact with legumes to produce ammonia. They receive glucose and fix nitrogen for the plant so the plant is able to create the amino acids and Nucleic acids required for growth. This presentation explains the research and the physical mapping, cross over events in propogation, and genetic mapping

Description: This presentation discusses research examining the incidence of tuberculosis (TB) among foreign-born Asians living in Tarrant County, Texas. According to the Centers for Disease Prevention and Control (CDC), TB in native-born Americans is steadily decreasing, while remaining constant for the foreign-born. In 2007, the TB rate among the foreign-born was 9.7 times that of U.S.-born, but among Asians it was 22.9 times the rate among Whites (CDC 2008 September). Data for this study were taken from a tuberculosis screening program conducted in Tarrant County from 1993 to 2006. Using Geographic Information System and statistical analysis, the study explores the relative contribution of traditional epidemiological factors including crowdedness, poverty, and less common factors such as self-reported incarceration, drug use, and other risky behaviors. The results indicate that although Asians make up 4.2% of the population, they account for 18% of TB cases. Surprisingly, however, Asians with TB are less likely to participate in the traditional high-risk behaviors that are normally associated with tuberculosis, including drug use (X2 = 57.426, p = .000), alcoholism (X2 = 39.776, p = .000), homelessness (X2 = 37.029, p = .000), and previous incarceration (X2 = 27.359, p = .000). Traditional programs targeting such high-risk populations ...