Discarge compilation from The Global River Discharge (RivDIS) Project

The Global River Discharge (RivDIS) data set contains monthly discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station, with a mean of 21.5 years. These data were digitized from published UNESCO archives by Charles Voromarty, Balaze Fekete, and B.A. Tucker of the Complex Systems Research Center (CSRC) at the University of New Hampshire. River discharge is typically measured through the use of a rating curve that relates local water level height to discharge. This rating curve is used to estimate discharge from the observed water level. The rating curves are periodically rechecked and recalibrated through on-site measurement of discharge and river stage.

Technology of bare tether current collection

The outstanding problem for useful applications of electrodynamic tethers is obtaining sufficient electron current from the ionospheric plasma. Bare tether collectors, in which the conducting tether itself, left uninsulated over kilometers of its length, acts as the collecting anode, promise to attain currents of 10 A or more from reasonably sized systems. Current collection by a bare tether is also relatively insensitive to drops in electron density, which are regularly encountered on each revolution of an orbit. This makes nighttime operation feasible. We show how the bare tether's high efficiency of current collection and ability to adjust to density variations follow from the orbital motion limited collection law of thin cylinders. We consider both upwardly deployed (power generation mode) and downwardly deployed (reboost mode) tethers, and present results that indicate how bare tether systems would perform as their magnetic and plasma environment varies in low earth orbit.

Estudio de la diversidad genética de Botrytis sp en orquídeas y la resistencia al ataque del hongo

En la actualidad la mayoría de plantas sufren pérdidas debido a las enfermedades que les provocan los hongos. Uno de estos grupos amenazado por el ataque de los hongos son las especies de la familia Orchidaceae, especies que se encuentran amenazadas y con numerosas especies en peligro de extinción. Uno de los problemas sanitarios más destacados es Botrytis cinerea, hongo patógeno cosmopolita, causante de enfermedades importantes en muchas plantas tales como frutas, verduras, accesiones de viveros, plantas ornamentales y huertos cultivos (Jarvis 1977; Elad et al., 2007). Este género es uno de los grupos de hongos más ampliamente conocido y distribuido. Contiene 22 especies (Hennebert 1973; Yohalem et al., 2003) y un híbrido (B. allii) (Yohalem & Alabama, 2003) vinculado a las etapas sexuales y un amplio número de huéspedes específicos (Beever y Weds, 2000); infecta más de 200 especies vegetales distintas (Williamson et al., 2007). Dada la importancia de este patógeno se realiza un estudio de caracterización morfológica y molecular del hongo, aislado de plantas de orquídeas cultivadas en condiciones de invernadero, de hortalizas y plantas frutales, con síntomas de necrosis, atizonamientos y pudriciones. El análisis de las características morfológicas (presencia de esclerocios, tamaño de conidios, presencia de estructuras sexuales in vitro) y fenotípicas (crecimiento micelial a diferentes temperaturas, germinación de esporas), nos permitió determinar características importantes del comportamiento del hongo y establecer cuáles son las mejores condiciones para su patogenicidad. Se afianzo este trabajo con estudios moleculares a través del análisis de la región ribosomal ITS1-ITS4. Entre los aislados estudiados se identificaron dos especies diferentes, Botrytis cinerea y B. fabiopsis, esta última conocida como especifica de Vicia faba, se lo aisló de una planta de Pelargonium sp. Se hizo un análisis filogenético para comparar estas dos especies, encontrándose que B. fabiopsis está estrechamente relacionada con B. cinerea y B. elliptica, pero lejanamente relacionado con B. fabae. Además, se analizó las poblaciones de los aislados de Botrytis, para ello se seleccionaron tres parejas de cebadores microsatelites con altos porcentajes de polimorfismo. Al analizar la similaridad entre los aislados se determinaron tres grupos de poblaciones de B. cinerea entre los cuales Botrytis fabiopsis comparte un grupo grande con B. cinerea. La diferenciación genética no fue significativa entre la población de aislados de orquídeas y hortalizas, la diferencia génica que fue muy baja, lo que sugiere que la especificidad de Botrytis no está dada por los hospederos, aunque la posibilidad de la especificidad con algún cultivo no puede descartarse. ABSTRACT Most plants suffer diseases caused by fungi. Orchidaceae is one of the threatened groups with many endangered species. Included into the most important problems in plant health is Botrytis cinerea, a cosmopolitan pathogen which causes major diseases in many plants of agronomic interest such as fruits, vegetables, planthouses accessions and ornamental plants (Jarvis, 1977; Elad et al, 2007). The genus Botrytis is one of the most widely and disseminated fungi. The genus contains 22 species (Hennebert 1973; Yohalem et al, 2003) and a hybrid (B. allii) (Yohalem & Alabama, 2003) linked to the sexual stages of a large number of specific hosts (Beever & Weds, 2000); infects over 200 different plant species (Williamson et al., 2007). Due to the importance of this pathogen, a study of morphological and molecular characterization of the fungus was carried out. Fungi samples were isolated from orchid plants grown in greenhouse conditions, vegetables and fruits with signs of necrosis, blight and rottening. To establish the best conditions for pathogenicity, behavioral characteristics of the fungus were studied through the analysis of morphological characteristics (presence of sclerotia, conidia size, sexual structures in vitro) and mycelial growth at different temperatures. To complete the characterization of the fungi, a molecular study was performed via the analysis of ribosomal ITS1-ITS4 region. Two different species were identified: Botrytis cinerea and Botrytis fabiopsis (known by specificity to Vicia faba). B. fabiopsis was isolated from a plant of the genus Pelargonium. A phylogenetic analysis was carried out to compare these two species leading to the conclusion that B. fabiopsis is closely related to B. cinerea and B. elliptica, but distantly related to B. fabae. The populations of Botrytis isolates were also analyzed. Three pairs of microsatellite primers with high percentages of polymorphism were selected. A similarity analysis showed three groups of populations of B. cinerea, including Botrytis fabiopsis. The genetic differentiation was not significant among the populations of isolates from orchids and vegetables; genetic differences were very low, suggesting that the specificity of Botrytis species is not given by the hosts.

Film Screening: ‘The Barber of Birmingham’

Time: 6 PM – 7:30 PM | Location: Page Library, Room #100 | RSVP via Facebook: https://www.facebook.com/events/1562714160720394/ Synopsis: In this 2012 Oscar-nominated short film, Alabama barber and civil rights veteran James Armstrong experiences the fulfillment of an unimaginable dream: the election of the first African-American president. An Official Selection of the 2011 Sundance Film Festival. Produced in association with American Documentary | POV. A co-presentation with the National Black Programming Consortia.

tmRDB (tmRNA database)

The tmRNA database (tmRDB) is maintained at the University of Texas Health Science Center at Tyler, Texas, and accessible on the World Wide Web at the URL http://psyche.uthct.edu/dbs/tmRDB/tmRDB.html. Mirror sites are located at Auburn University, Auburn, Alabama (http://www.ag.auburn.edu/mirror/tmRDB/) and the Institute of Biological Sciences, Aarhus, Denmark (http://www.bioinf.au.dk/tmRDB/). The tmRDB provides information and citation links about tmRNA, a molecule that combines functions of tRNA and mRNA in trans-translation. tmRNA is likely to be present in all bacteria and has been found in algae chloroplasts, the cyanelle of Cyanophora paradoxa and the mitochondrion of the flagellate Reclinomonas americana. This release adds 26 new sequences and corresponding predicted tmRNA-encoded tag peptides for a total of 86 tmRNAs, ordered alphabetically and phylogenetically. Secondary structures and three-dimensional models in PDB format for representative molecules are being made available. tmRNA alignments prove individual base pairs and are generated manually assisted by computational tools. The alignments with their corresponding structural annotation can be obtained in various formats, including a new column format designed to improve and simplify computational usability of the data.

Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala.

162-167

Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala.

121-131

Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala.

187-206

Bulletin : report of Agricultural Experiment Station, Agricultural and Mechanical College, Auburn, Ala.

113-120

Genetic association of CD247 (CD3ζ) with SLE in a large-scale multiethnic study

A classic T-cell phenotype in systemic lupus erythematosus (SLE) is the downregulation and replacement of the CD3ζ chain that alters T-cell receptor signaling. However, genetic associations with SLE in the human CD247 locus that encodes CD3ζ are not well established and require replication in independent cohorts. Our aim was therefore to examine, localize and validate CD247-SLE association in a large multiethnic population. We typed 44 contiguous CD247 single-nucleotide polymorphisms (SNPs) in 8922 SLE patients and 8077 controls from four ethnically distinct populations. The strongest associations were found in the Asian population (11 SNPs in intron 1, 4.99 × 10(-4) < P < 4.15 × 10(-2)), where we further identified a five-marker haplotype (rs12141731-rs2949655-rs16859085-rs12144621-rs858554; G-G-A-G-A; P(hap) = 2.12 × 10(-5)) that exceeded the most associated single SNP rs858554 (minor allele frequency in controls = 13%; P = 4.99 × 10(-4), odds ratio = 1.32) in significance. Imputation and subsequent association analysis showed evidence of association (P < 0.05) at 27 additional SNPs within intron 1. Cross-ethnic meta-analysis, assuming an additive genetic model adjusted for population proportions, showed five SNPs with significant P-values (1.40 × 10(-3) < P< 3.97 × 10(-2)), with one (rs704848) remaining significant after Bonferroni correction (P(meta) = 2.66 × 10(-2)). Our study independently confirms and extends the association of SLE with CD247, which is shared by various autoimmune disorders and supports a common T-cell-mediated mechanism.

Measurements of solar vector magnetic fields : proceedings of the MSFC workshop /

Includes bibliographies.

The southern reporter.

Vols. 6-142: Permanent ed.

Report of the Joint Select Committee to Inquire into the Condition of Affairs in the Late Insurrectionary States /

John Scott, Chairman. Report presented by L.P. Poland.