196,504 research outputs found
Theology in Queer Perspective
No full textA panel discussion held on Zoom on April 13, 2023. Panelists include Dr. Pamela R. Lightsey, the Rev. Dr. Justin Sabia-Tanis, and Dr. Karri L. Whipple Alldredge. Introduction by the Rev. Dr. Heather Hartung Vacek, moderated by Dr. Julia M. O'Brien, the Rev. Dr. Beth Toler, and Rachel Compton-Monell, closing by the Rev. Dr. Vanessa Lovelace. Digital video recording (mp4). Duration: 1 hour, 48 minutes, 9 seconds
\u27You Shall worship God on This Mountain\u27: A Theological Reading of Discrimination & Dehumanization at Denison
No full textThis article examines protests against prejudice on Denison\u27s campus in 2007 through the theological perspectives of M. Douglas Meeks and Jurgen Moltmann. The author argues that these two theologians offer pieces of a theology that can categorize the experiences at Denison during that time. First, Meeks thinks of communities as households that are asked to work as loving and supportive families. Meeks also asks Christians to remember the triune God and to use the example of that relationship three persons in one, all working in community for the love of others to serve as a model for their own relationships. Moltmann\u27s theology is an eschatological theology of hope. According to him, the promises of God are always out in front of humanity, and it must constantly strive to make those promises a part of life. Human actions should be defined by the ever-present and ever-increasing promises of God. To act in accordance with those promises, is to create the kingdom of God on earth. This means radically redefining the way society functions to value every human life and show it the dignity it deserves. Toler claims that both of these theologies were in use during the time of the protests against prejudice on Denison\u27s campus in 2007, and challenges students, faculty, and staff to continue to allow these theologies to motivate their actions
Genetic polymorphism of isozymes in loblolly pine seed
No full textA study was made of three enzymes, leucine aminopeptidase, alcohol dehydrogenase, and peroxidase in dry loblolly pine (Pinus taeda L.) seed. Two 10 tree modified half diallels in two separate wild strands were used as seed sources. Crude seed extract was electrophoresed in starch gel for three and one half hours, the gel was sliced into three slices and specific histochemical strains were applied to each separate slice for each enzyme. One variant was found in alcohol dehydrogenase. Instead of the normal six band pattern usually found, the number 5 band split into three bands giving an eight band pattern in the variant. The variant was observed only when the tree was the female parent and was not observed when reciprocal crosses using the tree as a male parent were analyzed. In peroxidase enzymes, two anodal bands were analyzed. Cathodal bands were observed but not recorded and analyzed. The two anodal bands appear to be controlled by two genes which produce dimmers. In starch gel, the hybrid middle band expected from random association of dimeric subunits was only observed occasionally, but when acrylamide was used the hybrid middle band was observed regularly. About 20% of the crosses analyzed had much wider bands than the average cross. When these crosses were run on disc acrylamide gels, a multiple banding pattern was observed in the wide staining area. In this area, six bands were observed which could have formed by random association of dimeric subunits. This banding pattern could result from a mutation in the gene responsible for dimeric subunit production. Starch gel electrophoresis of leucine aminopeptidase enzymes did not produce resolution clear enough to detect isozyme variants with the procedures used. A six band isozyme pattern was observed in leucine aminopeptidase
Characterization and identification of two distinct strains of Watermelon Mosaic Virus-2 affecting cucurbits in Texas
No full textTypescript (photocopy).Two unrelated viruses, Watermelon Mosaic Virus-1 (WMV-1) and Watermelon Mosaic Virus-2 (WMV-2), cause the major virus diseases of cucurbits in Texas. WMV-1, with a host range restricted to cucurbits, was reported in Texas in 1979 (20). WMV-2 was reported in the Brazos Valley of Texas by Chala (8). Two virus isolates from Cucurbita pepo L. (squash) and Melothria pendula L. (wild cucumber), designated "S" and "M", respectively, each resembled WMV-2 (8,12,45). Both strains cause disease symptoms when mechanically inoculated onto commercially popular cultivars of watermelon (Citrullus lanatus (Thunb.) Mansf.), cantaloupe (Cucumis melo L.), cucumber (Cucumis sativus L.), squash (Cucurbita pepo L.), and pumpkin (Cucurbita pepo L.). Among currently used commercial cucurbit varieties there is no known resistance. Recently, a virus very similar to WMV-2 was isolated and identified as Zucchini Yellow Mosaic Virus (ZYMV) (25,40,42). Isolates "S" and "M" were purified, characterized, and differentiated from ZYMV based on host range and serological differences. Isolates "S" and "M" have modal lengths of 755 nm and 775 nm, buoyant densities of 1.34 g/cm^3 and 1.33 g/cm^3, A260/A280 ratios of 1.15 and 1.19, respectively, and protein capsid subunits of molecular weights 3.2 x 10^4 daltons. These characteristics are consistent with other members of the potyvirus group. Neither isolate caused symptomatic infections of the differential hosts garden pea, Pisum sativum L. (cultivars Alaska and Little Marvel), and tobacco Nicotiana benthamiana, thus distinguishing them both from type WMV-2 and ZYMV. Isolate "S" caused a systemic infection on bean, Phaseolus vulgaris L. (cultivar Black Turtle 2), whereas isolate "M" did not, thus distinguishing them from each other. When cross absorbed by ZYMV antigens, anti-S-serum and anti-M-serum reacted homologously to WMV-2, S, and M antigens. When cross absorbed against WMV-2 antigens the antisera failed to react with ZYMV antigens and only weakly to S and M antigens. Both isolates closely resemble WMV-2 and ZYMV. Current evidence indicates isolates "S" and "M" are isolates of WMV-2 as opposed to separate and distinct viruses or strains of ZYMV
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Etiology of Sclerophthora macrospora in St. Augustinegrass
No full textVita.Studies were conducted to determine the causal agent, etiology, and control of the St. Augustinegrass downy mildew. Sporangial development, zoospore production, and size and morphology of asexual reproductive structures and host range demonstrate the causal organism of downy mildew of St. Augustinegrass is Sclerophthora macrospora (Sacc.) Thirum., Shaw and Naras. Grain sorghum (TX 2536) and maize (OH 545) inoculated with the St. Augustinegrass isolate of S. macrospora became infected and exhibited stunting and vegetative proliferation, although "crazy top" was not produced. "Crazy top" on St. Augustinegrass was observed infrequently. Oospores have not been observed in St. Augustinegrass, grain sorghum, or maize inoculated with the St. Augustinegrass isolate of S. macrospora. Histopathological examination of St. Augustinegrass leaf blades revealed extensively mycelial colonization of vascular bundles causing distortion of bundle sheaths, vascular elements, and mesophyll cells. In a newly initiated leaf, mycelial development was noted only in the leaf anterior to the collar. Sporangia were produced on downy mildew infected St. Augustinegrass over a temperature range of 5 to 25 C with an optimum at 15 C. Sporangia germinated by releasing 53 to 89 zoospores following dehiscence of the operculum. Optimum temperature range for zoospore production was determined to be 15 to 20 C with zoospore encystment and germination at 15 to 25 C. Zoospores demonstrated a positive chemotactic response to the abaxial area of newly expanding leaves. Zoospore infection occurred in a temperature range of 10 to 25 C with an optimum range at 15 C. ..
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Inheritance of resistance to crown rust and certain morphological traits in crosses involving Avena sterilis L. and methods of breaking seed dormancy in oats
No full textSix strains of A. sterilis introduced form Israel as breeding sources of crown rust of oats were crossed with a very susceptible variety Frazier. The number of genes conditioning resistance in the 6 strains was determined from studies of the F���, F���, and F��� populations. To determine if any genes conditioning crown rust in the 6 strains are common, all possible crosses were made among the strains, excluding reciprocals. Young seedlings, at the 2-leaf state, were inoculated with pure cultures of crown rust race 326. The number of genes conditioning crown rust resistance was determined from the type of segregation exhibited by each cross. Observed ratios were compared with expected genetic ratios by use of chi-square test for goodness of fit. When the F��� and F��� populations of crosses among A. sterilis segregated, they were considered to have different genes for resistance. P.I. 287211, C.I. 8295, P.I. 295919 and P.I. 296244 appeared to each have a single dominant gene and P.I. 29265 abd P.I. 296266 appeared to have 2 dominant genes for rust reaction to crown rust race 326. C.I. 8295 had a partially dominant gene for resistance. P.I. 287211 appeared to have a gene for resistance which as common with that found in C.I. 8295. ..
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Screening, selection and evaluation of gamma irradiation-induced mutants of Zea mays L. for resistance to southern corn leaf blight
No full textIncludes bibliographical references (leaves 82-95)The maternally inherited pollen-sterility character used prior to 1970 in commercial production of maize (Texas male-sterile system) conditions a hybrids' reaction to Bipolaris (Helminthosporium) maydis race T. Although certain hybrids and inbreds are more susceptible than others, any Texas male-sterile cytoplasm (cms-T) is more susceptible than its counterpart in the wild type, or normal, cytoplasm. Genes which restore pollen fertility, do not change this cytoplasmic susceptibility. The objective of this study was to induce durable and effective resistance to the disease caused by this organism, southern corn leaf blight, in an agronomically useful genetic background. Kernels of the cms-T version of an inbred with restored fertility, Tx441Rf, were exposed to four dosages of gamma-irradiation from ('60)Co. Dosages were subsequently evaluated for their efficiency and effectiveness in producing chlorophyll mutations. Both efficiency and effectiveness increased with increasing dosage based on the biological criteria used in calculations. First generation (M(,1)) plants were self-pollinated and their progeny evaluated for resistance to southern corn leaf blight. M(,2) and M(,3) seedlings were screened for resistance in a field trial (natural infection) in 1979 and in the greenhouse (controlled inoculation) in 1981. Intense selection pressure was applied in controlled inoculations with B. maydis race T by providing ideal conditions for disease development. Progeny of two resistant selections from the field trial exhibited resistance following the controlled inoculation. Four additional putative mutants with superior resistance were selected from among inoculated M(,2) seedlings. These resistant variants were evaluated in family studies where the frequency of chloroplast defects and viviparous mutants in the irradiated population was recorded. Success in the prescribed genetic manipulation of an agronomically important plant species can served as a prototype and speed progress in attaining disease resistance in maize and other crops. Our present understanding of this host-parasite interaction and mitochondrial membrane permeability is advanced by the discovery of phytotoxicity to s-triazine herbicides in cms-T maize. In vivo and in vitro studies demonstrated a greater sensitivity to atrazine and simazine for certain cms-T inbreds than for inbreds in normal cytoplasm
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