Anderson-Mott Transition in a Magnetic Field: Corrections to Scaling

It is shown that the Anderson-Mott metal-insulator transition of paramagnetic, interacting disordered electrons in an external magnetic field is in the same universality class as the transition from a ferromagnetic metal to a ferromagnetic insulator discussed recently. As a consequence, large corrections to scaling exist in the magnetic-field universality class, which have been neglected in previous theoretical descriptions. The nature and consequences of these corrections to scaling are discussed.Comment: 5pp., REVTeX, no figs, final version as publishe

Serendipitous Discovery and Parallax of a Nearby L Dwarf

A field star serendipitously observed in a parallax program proved to have a proper motion of 562 mas/yr and a parallax of 82 +- 2 mas. The star is identified with 2MASS J07003664+3157266. A Keck LRIS spectrum shows its spectral type to be L3.5, as expected from its infrared and optical colors and absolute magnitude. This object had not been previously recognized as an L dwarf, perhaps because of crowding at its relatively low Galactic latitude (b = +15.8 degrees).Comment: PASP, in press. 8 pages incl.2 postscript figures, plus one jpeg figur

Molecular Approaches in Attempts to Identify the Flagellin b-type Gene in Clone pKW52

Pseudomonas aeruginosa is an important pathogen for susceptible individuals particularly those immunocompromised due to the prolonged use of drugs, noscomial infections, burns, or cancer. In addition, P. aeruginosa infections are high among cystic fibrosis patients. P. aeruginosa presents a unique health concern and challenge for researchers due to its multiple virulence factors and the increasing number of patients developing P. aeruginosa infections. P. aeruginosa produces a variety of toxins and enzymes. The flagellum of P. aeruginosa allows the bacterium to be motile. Motility has enabled the P. aeruginosa bacterium to rapidly colonize the host\u27s body. The major structural component of the P. aeruginosa flagellum is the protein, flagellin. P. aeruginosa flagellin was categorized two major groups, designated a and b via slide and tube agglutination assays and immunofluorescence technique. The a -type flagellin is composed of a major a0antigenic component and one to three subantigen types, a1, a2, a3, and a4. The a-type flagellins have molecular weights of 45,000 to 52,000. The b-type flagellin appear to be antigenically homogenous and have a molecular weight of 53,000. It is the centermost region of the flagellin that is antigenic and highly variable even within one species. Oligonucleotides 1N and 1C, derived from the N-terminal and C-terminal nucleotide sequence of the cloned P. aeruginosa (strain PAK) flagellin a-type gene, annealed to clone pKW52 (flagellin b-type) and an approximately 600bp fragment was amplified by PCR. The 600bp fragment was cloned in vector pCRII, and a partial nucleotide and amino acid sequence of the resulting clone pKWII was determined. Southern hybridization with radiolabeled probes was used in attempts to locate and identify the flagellin b-type gene in pKW52 and pKWII, respectively. The 1.7kb flagellin (a-type) gene probe did not hybridize to pKW52 and pKWII under low and high stringency hybridization conditions. In immunological studies of pKW52 flagellin antigen expression was detected in E. coli cells harboring clone pKW52. Flagellin expression was not detected in E. coli cells harboring clone pKWII. The results of this thesis research suggest: 1) based on Southern hybridization experiments the sequence identity between the PAK 1.7kb flagellin a-type gene and clone pKW52 is estimated to be less than 90%, 2) the expression of flagellin b-type protein in E. coli cells harboring pKW52 suggested that clone pKW52 may contain the flagellin b-type gene, 3) colony immunoblotting experiments with antiflagellin antibodies correlated with Southern hybridization results demonstrating that pKWII did not contain the flagellin b-type gene, and 4) PCR and Southern hybridization experiments are molecular biology techniques that may be used to locate the flagellin b-type in clone pKW52

An exactly solvable toy model that mimics the mode coupling theory of supercooled liquid and glass transition

A toy model is proposed which incorporates the reversible mode coupling mechanism responsible for ergodic-nonergodic transition with trivial Hamiltonian in the mode coupling theory (MCT) of structural glass transition. The model can be analyzed without relying on uncontrolled approximations inevitable in the current MCT. The strength of hopping processes can be easily tuned and the ideal glass transition is reproduced only in a certain range of the strength. On the basis of the analyses of our model we discuss about a sharp ergodic-nonergodic transition and its smearing out by "hopping".Comment: 5 pages, 2 ps-figures, inappropriate terms replace

Reducing Medication Mismanagement in Adult Care Residences

Educational Objectives 1. Describe the prevalence of medication mismanagement in adult care facilities in Virginia. 2. Explain the significance of selected medication management errors. 3. Recommend practices to improve medication management task performance in adult care facilities

Observations on drought damage to some native plant species in eucalypt forests and woodlands near Hobart, Tasmania

A large number of shrub and tree species suffered damage in the Ridgeway and University Reserves near Hobart, Tasmania during a prolonged drought. Damage was largely confined to shallow soils and gully margins on dolerite, there being little or no damage on equivalent sites on sedimentary substrata. Intraspecific damage was inversely related to the heights of individuals for particular sites. Relative drought resistance is presented diagrammatically for 24 small shrub species and 17 tall shrub and tree species. Drought damage does not directly limit the distribution of most species observed in this study, although the patterns of relative drought resistance accord well with species distribution in respect to available water

Order Parameter Description of the Anderson-Mott Transition

An order parameter description of the Anderson-Mott transition (AMT) is given. We first derive an order parameter field theory for the AMT, and then present a mean-field solution. It is shown that the mean-field critical exponents are exact above the upper critical dimension. Renormalization group methods are then used to show that a random-field like term is generated under renormalization. This leads to similarities between the AMT and random-field magnets, and to an upper critical dimension $d_{c}^{+}=6$ for the AMT. For $d<6$, an $\epsilon = 6-d$ expansion is used to calculate the critical exponents. To first order in $\epsilon$ they are found to coincide with the exponents for the random-field Ising model. We then discuss a general scaling theory for the AMT. Some well established scaling relations, such as Wegner's scaling law, are found to be modified due to random-field effects. New experiments are proposed to test for random-field aspects of the AMT.Comment: 28pp., REVTeX, no figure

Effect of Hydro-Resistance Training on Bat Velocity

The purpose of this study was to determine the effect of hydro-resistance training on bat velocity during mimicked baseball swings in twenty-five female college students. Subjects were pre-tested for bat velocity and assigned to dry land (n = 8), water (n = 8), and control (n = 9) groups. The dry land group swung a 737 g (26 oz) Easton T1 Thunderstick baseball bat for three sets of 15 swings, three days per week, for eight weeks. The water group performed the swings in shoulder deep water. The dry land and water groups also participated in mandatory team general resistance training three days per week. The control group performed no bat swing or resistance-training regimens. Mean bat velocity was measured with an electronic eye-timing device. A 3 x 2 (Group x Time) ANOVA with repeated measures was used for statistical analysis, followed up with Tukey’s post hoc test. Bat velocity decreased significantly for the dry land and water groups (24.0 ± 3.6 m/s to 20.6 ± 4.1 m/s and 23.8 ± 3.5 to 18.8 ± 4.1 m/s, respectively). Bat velocity did not change for the control group (21.5 ± 3.0 m/s to 20.2 ± 2.1 m/s). We speculate that the decreased bat velocity in the dry land and water groups was caused by the mandatory team general resistance-training program

Approaching zero : temporal effects of a restrictive antibiotic policy on hospital-acquired Clostridium difficile, extended-spectrum β-lactamase-producing coliforms and meticillin-resistant Staphylococcus aureus

A restrictive antibiotic policy banning routine use of ceftriaxone and ciprofloxacin was implemented in a 450-bed district general hospital following an educational campaign. Monthly consumption of nine antibiotics was monitored in defined daily doses (DDDs) per 1000 patient-occupied bed-days (1000 pt-bds) 9 months before until 16 months after policy introduction. Hospital-acquired Clostridium difficile, meticillin-resistant Staphylococcus aureus (MRSA) and extended-spectrum -lactamase (ESBL)- producing coliform cases per month/1000 pt-bds were identified and reviewed throughout the hospital. Between the first and final 6 months of the study, average monthly consumption of ceftriaxone reduced by 95% (from 46.213 to 2.129 DDDs/1000 pt-bds) and that for ciprofloxacin by 72.5% (109.804 to 30.205 DDDs/1000 pt-bds). Over the same periods, hospital-acquisition rates for C. difficile reduced by 77% (2.398 to 0.549 cases/1000 pt-bds), for MRSA by 25% (1.187 to 0.894 cases/1000 pt-bds) and for ESBL-producing coliforms by 17% (1.480 to 1.224 cases/1000 pt-bds). Time-lag modelling confirmed significant associations between ceftriaxone and C. difficile cases at 1 month (correlation 0.83; P < 0.005), and between ciprofloxacin and ESBL-producing coliform cases at 2 months (correlation 0.649; P = 0.002). An audit performed 3 years after the policy showed sustained reduction in C. difficile rates (0.259 cases/1000 pt-bds), with additional decreases for MRSA (0.409 cases/1000 pt-bds) and ESBL-producing coliforms (0.809 cases/1000 pt-bds). In conclusion, banning two antibiotics resulted in an immediate and profound reduction in hospital-acquired C. difficile, with possible longer-term effects on MRSA and ESBL-producing coliform rates. Antibiotic stewardship is fundamental in the control of major hospital pathogens

Silicon solar cell development for low temperature and low illumination intensity operation, volume 1 Analysis report, 30 Jun. 1969 - 30 Apr. 1970

Operational performance of solar cell at low temperatures and under low illumination intensit