5,344 research outputs found

    Corolla size and temporal displacement of flowering times among sympatric diploid and tetraploid highbush blueberry (Vaccinium corymbosum)

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    Polyploidy (whole-genome duplication) is common in vascular plants, but the modes of establishment and persistence, as well as the ecological consequences, of polyploidy remain vague. Highbush blueberry (Vaccinium corymbosum L.) is an ecologically and economically important understory shrub with an unclear species definition, coexisting in sympatric populations of diploid and tetraploid cytotypes. This study analyzes differences in bloom time between sympatric diploid and tetraploid V. corymbosum in natural populations, testing the potential for these cytotypes to interbreed and contributing to the formation and continuity of ploidy-level diversification within this species. Ploidal level was confirmed through DNA flow cytometry of sympatric plants from two populations in New Jersey, USA. Flower bloom date and corolla size were recorded over a three-year period. Diploid corollas were 32% smaller than tetraploid corollas, making them easily identifiable in the field. Ploidy accounted for 55-69% of the variation in bloom date, with diploids flowering about one week before tetraploids, and the remaining variation distributed among plants, among branches, and within branches. Notwithstanding these differences, there was modest overlap in flowering time between cytotypes, suggesting that cross-pollination is possible. This contributes evidence to the most current species definition of V. corymbosum as a single (mixed ploidy) species.Poster's Graduate Student Thesis Publication.Peer reviewed

    Tales of the Hoy [electronic resource] : interspersed with song, ode, and dialogue. By Peter Pindar, Esq.

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    Peter Pindar = John Wolcot.Verse.On p. 64: "End of Part I.".Price from imprint: price three shillings. N. B. An clegant Engraving of the Author is prefixed to each Number, (entered at Stationers-Hall.At foot of titlepage: "N.B. An elegant engraving of the author is prefixed to each number"Electronic reproduction.English Short Title Catalog,Reproduction of original from British Library

    Zechariah 9-14 as the substructure of 1 Peter’s eschatological program

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    The principal aim of this study is to discern what has shaped the author of 1 Peter to regard Christian suffering as a necessary (1.6) and to-be-expected (4.12) component of faithful allegiance to Jesus Christ. Most research regarding suffering in 1 Peter has limited the scope of inquiry to two particular aspects—its cause and nature, and the strategies that the author of 1 Peter employs in order to enable his addressees to respond in faithfulness. There remains, however, the need for a comprehensive explanation for the source that has generated 1 Peter’s theology of Christian suffering. If Jesus truly is the Christ, God’s chosen redemptive agent who has come to restore God’s people, then how can it be that Christian suffering is a necessary part of discipleship after his coming, death and resurrection? What led the author of 1 Peter to such a startling conclusion, which seems to runs against the grain of the eschatological hopes and expectations of Jewish restoration ideology? This thesis analyzes the appropriation of shepherd and fiery trials imagery, and argues that the author of 1 Peter is dependent upon Zechariah 9-14 for his theology of Christian suffering. Said in another way, the eschatological program of Zechariah 9-14, read through the lens of the Gospel, functions as the substructure for 1 Peter’s eschatology and thus its theology of Christian suffering. In support of this hypothesis, this study highlights the fact that Zechariah 9- 14 was available and appropriated in early Christianity, in particular in the Passion Narrative tradition; that the shepherd imagery of 1 Pet 2.25 is best understood within the milieu of the Passion Narrative tradition, and that it alludes to the eschatological program of Zechariah 9-14; that the fiery trials imagery found in 1 Peter 1.6-7 and 1 Pet 4.12 is distinct from that which we find in Greco-Roman and OT wisdom sources, and that it shares exclusive parallels with some unique features of the eschatological program of Zechariah 9-14; that Zechariah 9-14 offers a more satisfying explanation for the modification of Isa 11.2 in 1 Pet 4.14, the transition from 4.12-19 to 5.1-4, why Peter has oriented his letter with the term διασπορά, and why he has described his addresses as οἶκος τοῦ θεοῦ; and finally that 1 Peter contains an implicit foundational narrative that shares distinct parallels with the eschatological program of Zechariah 9-14. We can conclude that 1 Peter offers a unique vista into the way in which at least one early Christian witness came to understand and to communicate the fact that Christian suffering was a necessary feature of faithful allegiance to Jesus Christ

    Systematic Review and Cumulative Analysis of Oncologic and Functional Outcomes After Robot-assisted Radical Cystectomy

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    CONTEXT Although open radical cystectomy (ORC) is still the standard approach, laparoscopic radical cystectomy (LRC) and robot-assisted radical cystectomy (RARC) are increasingly performed. OBJECTIVE To report on a systematic literature review and cumulative analysis of pathologic, oncologic, and functional outcomes of RARC in comparison with ORC and LRC. EVIDENCE ACQUISITION Medline, Scopus, and Web of Science databases were searched using a free-text protocol including the terms robot-assisted radical cystectomy or da Vinci radical cystectomy or robot* radical cystectomy. RARC case series and studies comparing RARC with either ORC or LRC were collected. A cumulative analysis was conducted. EVIDENCE SYNTHESIS The searches retrieved 105 papers, 87 of which reported on pathologic, oncologic, or functional outcomes. Most series were retrospective and had small case numbers, short follow-up, and potential patient selection bias. The lymph node yield during lymph node dissection was 19 (range: 3-55), with half of the series following an extended template (yield range: 11-55). The lymph node-positive rate was 22%. The performance of lymphadenectomy was correlated with surgeon and institutional volume. Cumulative analyses showed no significant difference in lymph node yield between RARC and ORC. Positive surgical margin (PSM) rates were 5.6% (1-1.5% in pT2 disease and 0-25% in pT3 and higher disease). PSM rates did not appear to decrease with sequential case numbers. Cumulative analyses showed no significant difference in rates of surgical margins between RARC and ORC or RARC and LRC. Neoadjuvant chemotherapy use ranged from 0% to 31%, with adjuvant chemotherapy used in 4-29% of patients. Only six series reported a mean follow-up of >36 mo. Three-year disease-free survival (DFS), cancer-specific survival (CSS), and overall survival (OS) rates were 67-76%, 68-83%, and 61-80%, respectively. The 5-yr DFS, CSS, and OS rates were 53-74%, 66-80%, and 39-66%, respectively. Similar to ORC, disease of higher pathologic stage or evidence of lymph node involvement was associated with worse survival. Very limited data were available with respect to functional outcomes. The 12-mo continence rates with continent diversion were 83-100% in men for daytime continence and 66-76% for nighttime continence. In one series, potency was recovered in 63% of patients who were evaluable at 12 mo. CONCLUSIONS Oncologic and functional data from RARC remain immature, and longer-term prospective studies are needed. Cumulative analyses demonstrated that lymph node yields and PSM rates were similar between RARC and ORC. Conclusive long-term survival outcomes for RARC were limited, although oncologic outcomes up to 5 yr were similar to those reported for ORC. PATIENT SUMMARY Although open radical cystectomy (RC) is still regarded as the standard treatment for muscle-invasive bladder cancer, laparoscopic and robot-assisted RCs are becoming more popular. Templates of lymph node dissection, lymph node yields, and positive surgical margin rates are acceptable with robot-assisted RC. Although definitive comparisons with open RC with respect to oncologic or functional outcomes are lacking, early results appear comparable

    “Cameralism” or “patrimonialism”: at the origins of Peter the Great’s reformation of higher management in Russia

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    The article presents the author’s interpretation of Petrine reforms of higher management in Russia. The author of the article asks the question, how successful was the attempt made by Peter I to create a rational system of public administration in Russia according to Western models? Among the main features of Peter’s reformation, the author highlights the lack of a clear and well-thought-out plan for the reforms carried out by Peter I, most of which were mainly “experimental” in nature, were carried out hastily and were subordinated to the tasks of the ongoing war with Sweden. Based on the analysis of the transformations carried out at the beginning of the XVIII century in the system of higher administration, the author of the article concludes about the strengthening of the personal principle in public administration during the reign of Peter I, which casts doubt on the widespread opinion about the formation of a rational system of public administration during the reforms carried out by Peter I. According to the author of the article, the use of Weber’s concept of “patrimonialism” (“patrimonial bureaucracy”) as a special type of domination based on the principle of personal loyalty to the patrimonial ruler (monarch) may become more correct in this regard when describing the Peter’s administrative system

    A discusdion of prose and poetry by Peter Svetina in the first triennium

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    The theoretical part of my diploma work deals with a poet and writer Peter Svetina, his biography ( with emphasis on autopoethics) and his bibliography. It deals with a literary theory which is important for evaluation of his works and their placement into the concept of children's literature. In a more detailed way, it presents the literary texts which I discussed together with the pupils of the second class for my diploma work. These texts are poetry anthologies such as The Passing-By World, Poems From The Washing Machine and literary texts such as About The Walrus That Didn't Want To Cut Its Nails, The Walrus Gets Glasses, The Hat Of Mr. Constantine, The Wisdom Of Hippos, How Jaromir Was Looking For Happiness and the Magic Ring. The research part of my diploma work deals with the examples of pupils' interpretations of the chosen texts, the creative works of the pupils themselves and their responses, the description of the knowledge survey about the poet and writer Peter Svetina and research results. It also introduces criteria of texts selection for reading by the pupils of the first three classes of the Primary School Nove Fužine. It has been found out that our pupils didn't know the author Peter Svetina beforehand. Our pupils from the first three classes deal with books and literary works in an integrated way and that's exactly the purpose of the author. Our pupils' emphasis is on the animal characters in literature but with the appropriate preparation they can identify themselves with adult characters in literature as well

    An annotated catalogue of selected works for clarinet by South African composers

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    The dissertation consists of an annotated catalogue of nineteen selected works for clarinet by South African composers. These are presented in chronological order, based on the year of composition. A short biographyof the composer is given before the work is discussed. Of the analysed works, all those for solo clarinet or for clarinet and piano have been graded. A thesis of a similar nature, written in 1989 by L.A. Hartshorne, entitled ""The Compositions for Clarinet by South African Composers"", contains details of twenty-four works written between 1928 and circa 1981. The majority of the compositions analysed in the current dissertation were written from around 1981 onwards, and to some extent, therefore, this research could be seen as complementary to the information contained in the aforementioned thesis. An addendum lists all the South African works featuring solo clarinet that the author was able to trace. These include solo works, cham ber works for up to nineteen instruments and concerto-type works with strings or orchestra
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