673 research outputs found

    Expressed Sequence Tag for DNA Polymerase Alpha in Embryonic Chicken Brain

    Get PDF
    Replicative DNA polymerases are enzymes located in the nuclei of cells. They have a role in the control of DNA synthesis in all cells, and problems with their function and control affect cell growth. One of these polymerases, DNA polymerase alpha ( pol α ), is a possible point of control for cell growth because it initiates DNA synthesis. The ability to selectively turn on or shut off this polymerase in cells could provide answers to problems ranging from cancer\u27s unregulated growth to regeneration of tissues. However, control mechanisms for DNA pol α are not fully understood at this time. The central theme to be addressed is to learn more about the growth-related transcriptional control of DNA pol α. This project is the preliminary step looking into DNA pol α in embryonic chicken brain. Our approach is to quantify the amount of mRNA for the DNA pol α catalytic subunit in embryonic chicken brain cells at different developmental sta

    BANANA CULTIVAR TRIALS FOR FRUIT PRODUCTION, ORNAMENTAL-LANDSCAPE USE, AND ORNAMENTAL-NURSERY PRODUCTION IN SOUTH GEORGIA

    Get PDF
    North America is the largest net importer of bananas on a regional basis. The United States is still the worldÂ’'s number- one importer and consumer of bananas. U.S. companies spend approximately $1.1 billion each year on banana imports, purchasing 31.1% of total world imports (Fonsah 2002; FAO 2001). Bananas and plantains together have been rated the fourth most important crop in the world in terms of food value and food security. This research is aimed at determining the feasibility and suitability of Annual Cropping Production (ACP) for a niche market under Georgia weather conditions and, determining which cultivars have the greatest potential for ornamental-landscape use and ornamental-nursery production. Phenological and pomological sampling and data will be used to analyze the feasibility and suitability of ACP and ornamental use.banana, cultivars, input application, fertility, field operations, production, marketing, quality, landscape, green industry, finger length, calibration, pseudo-stem, Crop Production/Industries,

    Systemorientierte Analyse der Dynamik der Direktmethanol-Brennstoffzelle

    Get PDF

    Second Year Banana Cultivar Trial in South Georgia

    Get PDF
    The development of the annual cropping production system (ACP) and more cold-tolerant cultivars has allowed commercial banana production outside the traditional production belt. This evaluation of 32 cultivars was initiated to determine the feasibility and suitability of Annual Cropping Production (ACP) for niche/ethnic markets under Georgia weather conditions; determine the growth performance, fruit quality, and marketability; and determine which cultivars have sufficient cold hardiness for ornamental landscape use.Crop Production/Industries,

    Why Are There Seeds In My Banana? A Look at Ornamental Bananas

    Get PDF
    In many parts of the world bananas are a staple food, while in other regions they are a highly valued ornamental plant. Bananas are the fourth most important food crop in the world, and they are also used in many other waysñ€”every part of the plant has value. In addition to the standard dessert bananas, there is another group of species in the banana genus that are much less known in the United States but offer some wonderful options as landscape plants. This group of banana species is known as ornamental bananas. This paper sheds some light on ornamental banana cultivars that provide a tropical atmosphere to gardens in the Southeast region of the United States.Crop Production/Industries,

    Time-resolving electrical conduction in thin iron films

    Get PDF

    Extended Techniques for Intermediate Violin Students

    Get PDF
    As we reach the end of the second decade of the 21st century, the performance of contemporary music is not a novelty in any concert hall. American orchestras frequently include contemporary works in their programs, and music schools offer specialized classes, ensembles, and even full degrees dedicated to contemporary music. However, for the violin, there are very few resources explaining extended techniques and other recent aesthetic innovations in a didactic manner. Most of the available material is directed at the advanced student or professional player. On the other hand, traditional instructional material often barely glosses over the 20th century repertoire, and virtually ignores the past 50 years of music history. This leaves young violinists unprepared for (and sometimes even unaware of) the challenges of contemporary violin music. This dissertation intends to be a resource on didactic material on the subject of violin extended techniques, directed at intermediate violin players. The objective of this material is to aid teachers in the elaboration of introductory lessons on subjects related to contemporary music. The discussion is centered in techniques that relate immediately to basic violin instruction, namely: left hand patterns, contractions and extensions, shifting, glissando, microtonality, vibrato, trills and tremolo, harmonics, changing dynamics, changing tone color, sul ponticello, sul tasto, bow pressure, pizzicato, and col legno battuto and col legno tratto. For each technique, this dissertation presents a definition and explanation from the point of view of the mechanics of violin playing, suggests exercises, and provides accessible related excerpts of music of the 20th and 21st centuries for classroom use

    Banana Trials: A Potential Niche and Ethnic Market in Georgia

    Get PDF
    Annual cropping production (ACP) is a technique used worldwide to target favorable market conditions. This technique has allowed commercial banana production outside the traditional production belt such as South Africa, Thailand, Israel, and China. In 2003 an evaluation of thirty-three cultivars was initiated near Savannah, Georgia to determine their suitability for ornamental, nursery, and ACP for niche/ethnic markets under Georgia weather conditions. In South Georgia and other temperate regions around the world, the pseudostems are normally killed to ground level during most winters. However, excellent plant growth rate, good flowering, and limited commercial fruit production was observed. Identifying one or more cultivars with potential to produce commercial fruits may result in a huge market opportunity, especially because the United States is the largest consumer and net importer of bananas. Despite the erratic fruit production, male flowers, leaves for cooking, and suckers for ornamental purposes have potential to generate significant farm income in this belt. Of the cultivars investigated, ‘Musa 1780’ (believed to be an ‘Orinoco’ type), ‘Sweet Heart,’ ‘Dwarf Namwah,’ ‘Ice Cream,’ ‘Kandarian,’ and ‘Belle’ cultivars were the most successful, but the growing season was slightly too short. The study was conducted from 2003 to 2006. Data was analyzed using Proc Mixed.Agribusiness, Marketing,

    Studying the Interaction of Mass Transport and Electrochemical Reaction Kinetics by Species Frequency Response Analysis

    Get PDF
    Electrochemical macrokinetics contains the interaction of electrode reactions with transport phenomena. To disentangle the individual processes, dynamic techniques such as electrochemical impedance spectroscopy are widely used. Additional information can be obtained when further quantities besides current and potential are recorded. Here, we present and analyze a method to observe the dynamics of the flux of volatile species, i.e. mass transfer, in porous electrodes during electrochemical reactions with a high time resolution. We call this technique species frequency response analysis (sFRA). It is experimentally demonstrated with electrochemical methanol oxidation reaction on a porous Pt/Ru electrode. The dynamic relationship between current, potential and the flux of the gaseous reaction product CO2_{2} is measured by differential electrochemical mass spectrometry. The resulting transfer function that relates current density with CO2_{2} flux is analysed in detail by means of a one-dimensional mathematical model. It is demonstrated how the influence of reaction and transport phenomena can be separated in the sFRA Nyquist plot. Practical aspects such as sensitivity and accessible frequency range are discussed as well as the overall prospects and limitations of the technique
    • 

    corecore