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The Status of Six-Man Football in the High Schools of Texas and a Manual for Coaches
This thesis examines the status of six-man football in Texas high schools
Design and Implementation of a Lunar Communications Satellite and Server for the 2012 SISO Smackdown
Last year, the Simulation Interoperability Standards Organization (SISO) inaugurated the now annual High Level Architecture (HLA) Smackdown at the Spring Simulation Interoperability Workshop (SIW). A primary objective of the Smackdown event is to provide college students with hands-on experience in the High Level Architecture (HLA). The University of Alabama in Huntsville (UAHuntsville) fielded teams in 2011 and 2012. Both the 2011 and 2012 smackdown scenarios were a lunar resupply mission. The 2012 UAHuntsville fielded four federates: a communications network Federate called Lunar Communications and Navigation Satellite Service (LCANServ) for sending and receiving messages, a Lunar Satellite Constellation (LCANSat) to put in place radios needed by the communications network for Line-Of-Sight communication calculations, and 3D graphical displays of the orbiting satellites and a 3D visualization of the lunar surface activities. This paper concentrates on the first two federates by describing the functions, algorithms, the modular FOM, experiences, lessons learned and recommendations for future Smackdown events
Spots, plages, and flares on lambda Andromedae and II Pegasi
We present the results of a contemporaneous photometric and spectroscopic
monitoring of lambda And and II Peg aimed at investigating the behavior of
surface inhomogeneities in the atmospheres of these active stars which have
nearly the same temperature but different gravity. The light curves and the
modulation of the surface temperature, as recovered from LDRs, are used to map
the photospheric spots, while the H-alpha emission has been used as an
indicator of chromospheric inhomogeneities. The spot temperatures and sizes
were derived from a spot model applied to the contemporaneous light and
temperature curves. We find larger and cooler spots on II Peg (T_sp ~ 3600 K)
compared to lambda And (T_sp ~ 3900 K); this could be the result of both the
different gravity and the higher activity level of the former. Moreover, we
find a clear anti-correlation between the H-alpha emission and the photospheric
diagnostics. We have also detected a modulation of the intensity of the HeI D_3
line with the star rotation. A rough reconstruction of the 3D structure of
their atmospheres has been also performed by applying a spot/plage model to the
light and temperature curves and to the H-alpha flux modulation. A close
spatial association of photospheric and chromospheric active regions has been
found in both stars. Larger and cooler spots have been found on II Peg, the
system with the active component of higher gravity and higher activity level.
The area ratio of plages to spots seems to decrease when the spots get bigger.
Moreover, with the present and literature data, a correlation between the
temperature difference Delta_T = T_ph - T_sp and the surface gravity has been
also suggested. In addition, a strong flare affecting the H-alpha, the HeI D_3,
and the cores of NaI D_1,2 lines has been observed on II Peg.Comment: Accepted for publication in A&A (7 November 2007) 12 Pages, 7 Figure
A sensitive high performance liquid chromatography assay for the quantification of doxorubicin associated with DNA in tumor and tissues
A HPLC method was validated to quantify doxorubicin associated to DNA from tissue.Successfully applied to an in vivo mouse-based pharmacokinetic study.Important tool for future studies evaluating intracellular pharmacokinetics.Doxorubicin, a widely used anticancer agent, exhibits antitumor activity against a wide variety of malignancies. The drug exerts its cytotoxic effects by binding to and intercalating within the DNA of tumor and tissue cells. However, current assays are unable to accurately determine the concentration of the intracellular active form of doxorubicin. Thus, the development of a sample processing method and a high-performance liquid chromatography (HPLC) methodology was performed in order to quantify doxorubicin that is associated with DNA in tumors and tissues, which provided an intracellular cytotoxic measure of doxorubicin exposure after administration of small molecule and nanoparticle formulations of doxorubicin. The assay uses daunorubicin as an internal standard; liquid–liquid phase extraction to isolate drug associated with DNA; a Shimadzu HPLC with fluorescence detection equipped with a Phenomenex Luna C18 (2 μm, 2.0 × 100 mm) analytical column and a gradient mobile phase of 0.1% formic acid in water or acetonitrile for separation and quantification. The assay has a lower limit of detection (LLOQ) of 10 ng/mL and is shown to be linear up to 3000 ng/mL. The intra- and inter-day precision of the assay expressed as a coefficient of variation (CV%) ranged from 4.01 to 8.81%. Furthermore, the suitability of this assay for measuring doxorubicin associated with DNA in vivo was demonstrated by using it to quantify the doxorubicin concentration within tumor samples from SKOV3 and HEC1A mice obtained 72 h after administration of PEGylated liposomal doxorubicin (Doxil®; PLD) at 6 mg/kg IV x 1. This HPLC assay allows for sensitive intracellular quantification of doxorubicin and will be an important tool for future studies evaluating intracellular pharmacokinetics of doxorubicin and various nanoparticle formulations of doxorubicin
An Evaluation of the Effects of Refrigerant Charge on a Residential Central Air Conditioner with Orifice Expansion
The report is divided into 5 chapters in addition to
the this chapter. Chapter 2 describes the experimental
facilities and procedures used to collect and analyze data.
Results are presented in Chapters 3 through 5. In all three
orifices were tested. In chapter 3, data for the nominal
size orifice are presented first. Data on the other two
orifices are presented in Chapter 4. Comparisons between
the three orifices are presented in Chapter 5. Conclusions
are provided in Chapter 6.Recent studies have been conducted at Texas A & M
University to quantify the effect of over/undercharging on
the performance of a residential central air conditioner
with two different expansion devices: capillary tubes and
thermal expansion valves. A third expansion device, the
short-tube orifice, is used by many manufacturers of
residential air conditioners. This report summarizes the
results of experiments performed for the Trane Dealer
Products Group on a Trane central air conditioner which
utilized short-tube orifices for flow control. The project
was conducted under Trane Purchase Order No. TYR1020264-
T280D
Is it possible to detect planets around young active G and K dwarfs?
Theoretical predictions suggest that the distribution of planets in very young stars could be very different to that typically observed in Gyr old systems that are the current focus of radial velocity surveys. However, the detection of planets around young stars is hampered by the increased stellar activity associated with young stars, the signatures of which can bias the detection of planets. In this paper, we place realistic limitations on the possibilities for detecting planets around young active G and K dwarfs. The models of stellar activity based on tomographic imaging of the G dwarf HD 141943 and the K1 dwarf AB Dor also include contributions from plage and many small random starspots. Our results show that the increased stellar activity levels present on young solar-type stars strongly impacts the detection of Earth-mass and Jupiter-mass planets and that the degree of activity jitter is directly correlated with stellar v sin i. We also show that for G and K dwarfs, the distribution of activity in individual stars is more important than the differences in induced radial velocities as a function of spectral type. We conclude that Jupiter-mass planets can be detected close-in around fast-rotating young active stars, Neptune-mass planets around moderate rotators and that Super-Earths are only detectable around very slowly rotating stars. The effects of an increase in stellar activity jitter by observing younger stars can be compensated for by extending the observational base-line to at least 100 epochs.Peer reviewe
Spatial Distribution of Aphis glycines (Hemiptera: Aphididae): A Summary of the Suction Trap Network
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is an economically important pest of soybean, Glycine max (L.) Merrill, in the United States. Phenological information ofA. glycines is limited; specifically, little is known about factors guiding migrating aphids and potential impacts of long distance flights on local population dynamics. Increasing our understanding of A. glycines population dynamics may improve predictions of A. glycines outbreaks and improve management efforts. In 2005 a suction trap network was established in seven Midwest states to monitor the occurrence of alates. By 2006, this network expanded to 10 states and consisted of 42 traps. The goal of the STN was to monitor movement of A. glycines from their overwintering hostRhamnus spp. to soybean in spring, movement among soybean fields during summer, and emigration from soybean to Rhamnus in fall. The objective of this study was to infer movement patterns ofA. glycines on a regional scale based on trap captures, and determine the suitability of certain statistical methods for future analyses. Overall, alates were not commonly collected in suction traps until June. The most alates were collected during a 3-wk period in the summer (late July to mid-August), followed by the fall, with a peak capture period during the last 2 wk of September. Alate captures were positively correlated with latitude, a pattern consistent with the distribution of Rhamnus in the United States, suggesting that more southern regions are infested by immigrants from the north
P04-10. Neutralization of Tier 1 and Tier 2 pseudoviruses by human anti-V3 monoclonal antibodies
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