Copper and nickel adherently electroplated on titanium alloy

Anodic treatment of titanium alloy enables electroplating of tightly adherent coatings of copper and nickel on the alloy. The alloy is treated in a solution of hydrofluoric and acetic acids, followed by the electroplating process

Bufo houstonensis

Number of Pages: 2Integrative BiologyGeological Science

Periodicities in the Io plasma torus

We present a 6-month baseline of spatially resolved measurements of the Io plasma torus intensity and perpendicular ion temperature which we use to determine the periodicities of the torus during this time. We find large anticorrelated variations in the intensity and ion temperature which are periodic with the Jovian rotation rate (System III). The intensity variations are found to be a simple manifestation of the temperature variations, though no explanation for the temperature variations is apparent. Periodogram analysis shows an additional intensity periodicity which rotates 2.91±0.06% more slowly than System III. This period is found only in the intensity and not in the ion temperature. We conclude from these observations that the torus has a sinusoidal ion temperature variation locked into the rotation of Jupiter and that superimposed on this is a long-lived density pattern which rotates 2.91% more slowly than Jupiter. Based on the spatial structure and physical properties, we rule out all currently proposed mechanisms for the creation of these periodicities within the torus

Butterflies and Rebirth

During the Renaissance, collectors saw Morpho butterflies as beautiful, elegant, and rare creatures. Their exotic origin and sophistication made these fascinating creatures the subjects of scientific observation, decoration, and symbolism. Butterflies of the Morpho genus include a wide variety of marvelous, striking, and beautiful species. Home to South and Central America, Morpho butterflies thrive in the rainforests of Nicaragua, Colombia, and Venezuela. When Renaissance Europeans began exploring American rainforests, they were quickly captivated by these butterflies. Morphos feature vivid blue coloration and iridescence on the dorsal side of their wings as well as a yellow-brown coloration on the other side. [excerpt

Rana blairi

Number of Pages: 6Integrative BiologyGeological Science

Search Process Checklist

The Search Process Checklist is a tool that is used in instructional sessions with nurses in reference to evidence-based practice and literature searching. It is intended as a reference handout. It is under a creative commons license. If you would like a version that can be rebranded for your organization to use, please contact the author for an editable version

Temporary Assistance for Needy Families: Update on Families Served and Work Participation

[Excerpt] The Temporary Assistance for Needy Families (TANF) program, created in 1996, is one of the key federal funding streams provided to states to assist low-income families. A critical aspect of TANF has been its focus on employment and self-sufficiency, and the primary means to measure state efforts in this area has been TANF’s work participation requirements. When the Deficit Reduction Act of 2005 (DRA) reauthorized TANF, it also made changes that were generally expected to strengthen these work requirements. Given the impending extension or reauthorization of TANF, this testimony primarily draws on previous GAO work to focus on (1) how the welfare caseload and related spending have changed since TANF was created and (2) how states have met work participation rates since DRA. To address these issues, in work conducted from August 2009 to May 2010, GAO analyzed state data reported to the Department of Healthand Human Services (HHS); surveyed state TANF administrators in 50 states and the District of Columbia; conducted site visits to Florida, Ohio, and Oregon, selected to provide geographic diversity and variation in TANF program characteristics; and reviewed relevant federal laws, regulations, and research. In July 2011, GAO updated this work by analyzing state data reported to HHS since that time. In addition, GAO gathered information on caseload changes through its forthcoming work on TANF child-only cases

The 3-4 μ\mum Spectra of Jupiter Trojan Asteroids

To date, reflectance spectra of Jupiter Trojan asteroids have revealed no distinctive absorption features. For this reason, the surface composition of these objects remains a subject of speculation. Spectra have revealed, however, that the Jupiter Trojan asteroids consist of two distinct sub-populations which differ in the optical to near-infrared colors. The origins and compositional differences between the two sub-populations remain unclear. Here we report the results from a 2.2-3.8 $\mu$m spectral survey of a collection of 16 Jupiter Trojan asteroids, divided equally between the two sub-populations. We find clear spectral absorption features centered around 3.1 $\mu$m in the less red population. Additional absorption consistent with expected from organic materials might also be present. No such features are see in the red population. A strong correlation exists between the strength of the 3.1 $\mu$m absorption feature and the optical to near-infrared color of the objects. While traditionally absorptions such as these in dark asteroids are modeled as being due to fine-grain water frost, we find it physically implausible that the special circumstances required to create such fine-grained frost would exist on a substantial fraction of the Jupiter Trojan asteroids. We suggest, instead, that the 3.1 $\mu$m absorption on Trojans and other dark asteroids could be due to N-H stretch features. Additionally, we point out that reflectivities derived from WISE observations show a strong absorption beyond 4$\mu$m for both populations. The continuum of 3.1 $\mu$m features and the common absorption beyond 4 $\mu$m might suggest that both sub-populations of Jupiter Trojan asteroids formed in the same general region of the early solar system.Comment: AJ, in pres

The Orion constellation as an installation - An innovative three dimensional teaching and learning environment

Visualising the three dimensional distribution of stars within a constellation is highly challenging for both students and educators, but when carried out in an interactive collaborative way it can create an ideal environment to explore common misconceptions about size and scale within astronomy. We present how the common table top activities based upon the Orion constellation miss out on this opportunity. Transformed into a walk-through Orion installation that includes the position of our Solar system, it allows the students to fully immerse themselves within the model and experience parallax. It enables participants to explore within the installation many other aspects of astronomy relating to sky culture, stellar evolution, and stellar timescales establishing an innovative learning and teaching environment.Comment: 2 pages, submitted to The Physics Teacher - Colum