UNLV Jazz Ensemble II and III

Program listing performers and works performe

Criminal Law: 1992 Survey of Florida Law

One decade ago, the Florida Legislature created the Sentencing Commission, and charged it with the responsibility for developing a statewide system of sentencing guidelines

Analysis of Carbon Capture and Sequestration Pore Space Legislation: A Review of Existing and Possible Regimes

Liability coverage for carbon capture and sequestration (CCS) is of paramount importance if the industry is going to mature and develop in a way that will allow it to make a significant contribution to mitigating climate change. Liability for CCS can be broken into two phases – short-term, which covers the pre-injection, injection, and closure stages of the project, and long-term, which covers the post-closure stage. Since pre-injection, injection, and closure occur over a relatively short period of time that may cover 20-30 years, typical liability instruments like private insurance, letters of credit, performance bonds, trust funds, and escrow accounts may be utilized. For the post-closure phase, which lasts indefinitely after the site has been closed, more enduring liability instruments must be used in order to ensure that adequate and long-lasting coverage is provided. Several states have created liability schemes to cover long-term liability, but most of these schemes are incomplete and may lead to confusion over who is responsible for damages and remediation if they are utilized. This paper discusses possible liability schemes, critically analyzes those schemes currently in place, and proposes the best possible choice for long-term coverage of geological sequestration

Separation of niobium and tantalum - a literature survey

During recent years increased interest has been shown in the metal niobium. Because niobium has a high melting point (4376° F) and a low neutron cross-section, the Atomic Energy Commission has encouraged research on new methods of winning the metal from its ores with the ultimate hope of finding a process which would yield niobium metal at a reasonable price. The two areas of endeavor in which·the principal difficulties in finding such an economic process occur are the separation of tantalum from the niobium and the conversion of purified niobium salts to the metal. This report, then, was written to consolidate the more important information available in the literature on one of these troublesome areas, that of the separation of niobium and tantalum. It is to be noted, however, that all the references available in the literature on niobium-tantalum separation are not included in this report, but only those which appear to have the most usefulness for future endeavors on this problem

A Purification of venom phosphodiesterase

For purposes of analysis of polynucleotides, it is desirable to have a phosphodiesterase, substantially free of 5-nucleotidase or other phosphatase activity. The presence of a phosphodiesterase in a wide variety of snake venoms was demonstrated by Gullan and Jackson (1). These venoms were found also to contain a potent 5-nucleotidase, but were free of alkaline phosphatase activity. Hurst and Butler (2) found that certain samples of Russell's viper venom were nearly free of 5-nucleotidase activity, while retaining potent phosphodiesterase action. By a chromatographic procedure, involving the use of cellulose columns, they were able to reduce the 5-nucleotidase activity of rattlesnake venom, relative to its phosphodiesterase activity, and to obtain fractions nearly comparable to the viper venom

A Deoxyribonuclease from Calf Spleen. II. Mode of Action

When highly polymerized deoxyribonucleic acid is digested with pancreatic DNase and the digest further degraded with phosphodiesterase from intestinal mucose or snake venom, the mononucleotides formed are 5'-phosphates. Since a digest prepared in this manner with a purified venom diesterase contains only 5'-mononucleotides and practically no nucleosides or polynucleotides, the pancreatic DNase must form only polynucleotides with 5' monoesterified phosphate end groups. Recently the enzymatic synthesis of polydeoxyribonucleotides from eoxyribonucleoside 5'-triphosphates has been demonstrated. Thus both enzymatic synthesis and degradation of deoxyribonucleic acids have as yet involved only derivatives with 5'-monoesterified phosphate

A Deoxyribonuclease from Calf Spleen: I Purification and Properties

The deoxyribonucleases1 of animal tissues are of two types which are readily distinguishable by the conditions necessary for activity on their substrate, DNA. The pancreatic DNase, which has been crystallized by Kunitz (1), is active in neutral solution in the presence of magnesium or certain other divalent cations (2). The DN ase predominant in most other tissues is active at a lower pH, in the presence of adequate ionic strength, but does not specifically require divalent ions

A New Brown Dwarf Desert? A Scarcity of Wide Ultracool Binaries

We present the results of a deep-imaging search for wide companions to low-mass stars and brown dwarfs using NSFCam on IRTF. We searched a sample of 132 M7-L8 dwarfs to magnitude limits of $J \sim 20.5$ and $K \sim 18.5$, corresponding to secondary-primary mass ratios of $\sim 0.5$. No companions were found with separations between 2{\arcsec} to 31{\arcsec} ($\sim$40 AU to $\sim$1000 AU). This null result implies a wide companion frequency below 2.3% at the 95% confidence level within the sensitivity limits of the survey. Preliminary modeling efforts indicate that we could have detected 85% of companions more massive than $0.05 M_{\odot}$ and 50% above $0.03 M_{\odot}$.Comment: 27 pages, 8 figures, 3 tables: accepted to the Astronomical Journa