Roost Site Selection of the Red Bat (Lasiurus borealis)

I monitored the roosting activity and evaluated roost site selection of red bats (Lasiurus borealis) at study sites in Coles County during the summer of 1996. Red bats were mist-netted and radio transmitters were affixed to 12 individuals. A total of 105 transmitter-days were recorded with 75 roost locations identified. The roost types consisted of eight different species of trees, prairie grass, and residential structures but the vast majority of roosts (92%) were in large, deciduous trees. The height of the roosts ranged from 0.5 to 21.4 m, but 54.7% were between 5-10 m. Movement between consecutive roosts ranged from 0 to 733 m with 80% being less than 200 m. Reduced understory vegetation beneath roosts allowed for a less obstructed flight path. Red bats showed fidelity to their home ranges, but not to individual roost sites. Urban forests in central Illinois provide the essential habitat components for successful colonization by bat species and may constitute important habitat for this species

Comparison of D.I. Water Bacteria Counts by culture and Fluorescence Microscopy

The traditional Culture technique for bacterial enumeration requires prolonged incubation times and only measures viable bacterial densities. In comparison, the technique of Fluorescence Microscopy offers a method for obtaining total bacterfal determinations fn a much shorter time. This paper fs concerned with a preliminary comparison of these two methods

The Effects of Storytelling on Happiness and Resilience in Older Adults

A person’s mind, body and spirit each age at a different pace. Several studies suggest that resilient older adults are happier and tend to report a better quality of life, regardless of actual health status. Studies also suggest that storytelling is one way to build happiness and resilience. We focused on storytelling as an intervention to build resilience in older adults. This study differs from previous studies in that we wanted to know if resilience could be affected in the short-term. The empirical culture of inquiry led us to use a case study method with a quasi-experimental design. We structured five weekly storytelling groups with eight older adults and measured the change in happiness and resilience before, during and after the 5-week program. We used descriptive statistics and thematic analyses. Results suggest that short-term storytelling is effective for increasing characteristics of happiness and resilience. The implications for short-term interventions to increase resilience may be especially useful for transitional care facilities and health crisis centers

The Extragalactic Distance Database: Color-Magnitude Diagrams

The CMDs/TRGB (Color-Magnitude Diagrams/Tip of the Red Giant Branch) section of the Extragalactic Distance Database contains a compilation of observations of nearby galaxies from the Hubble Space Telescope. Approximately 250 (and increasing) galaxies in the Local Volume have CMDs and the stellar photometry tables used to produce them available through the web. Various stellar populations that make up a galaxy are visible in the CMDs, but our primary purpose for collecting and analyzing these galaxy images is to measure the TRGB in each. We can estimate the distance to a galaxy by using stars at the TRGB as standard candles. In this paper we describe the process of constructing the CMDs and make the results available to the public.Comment: 8 pages, 5 figures, 1 long table, submitted to Astronomical Journa

Special Issue on “Advances in Microfluidics Technology for Diagnostics and Detection”

In recent years microfluidics and lab-on-a-chip havecome to the forefront in diagnostics and detection [...

Pluripotency and the endogenous retrovirus HERVH: Conflict or serendipity?

Remnants of ancient retroviral infections during evolution litter all mammalian genomes. In modern humans, such endogenous retroviral (ERV) sequences comprise at least 8% of the genome. While ERVs and other types of transposable elements undoubtedly contribute to the genomic "junk yard", functions for some ERV sequences have been demonstrated, with growing evidence that ERVs can be important players in gene regulatory processes. Here we focus on one particular large family of human ERVs, termed HERVH, which several recent studies suggest has a key regulatory role in human pluripotent stem cells. Remarkably, this is not the first instance of an ERV controlling pluripotency. We speculate as to why this convergent evolution might have come about, suggesting that it may reflect selection on the virus to extend the time available for transposition. Alternatively it may reflect serendipity alone

Discussion of Boundary-Layer Characteristics Near the Wall of an Axial-Flow Compressor

The boundary-layer velocity profiles in the tip region of an axial-flow compressor downstream of the guide vanes and downstream of the rotor were measured by use of total-pressure and claw-type yaw probes. These velocities were resolved into two components: one along the streamline of the flow outside the boundary layer, and the other perpendicular to it. The affinity among all profiles was thus demonstrated with the boundary-layer thickness and the deflection of the boundary layer at the wall as the generalizing parameters. By use of these results and the momentum-integral equations, boundary-layer characteristics on the walls of an axial-flow compressor were qualitatively evaluated