395 research outputs found
A catalytic asymmetric protocol for the enantioselective synthesis of 3(2H)-furanones
No full text3(2H)-Furanones can be prepared by a catalytic asymmetric protocol from enynones, which, if electron-rich, require only one reagent and involve two reactions in a single operation—a domino process
New-England or A Briefe Enarration of the Ayre, Earth, Water, Fish and Fowles of That Country. With a Description of the Natures, Orders, Habits, and Religion of the Natives; in Latine and English Verse
No full textThis text, a Latin poem in dactylic hexameter with an accompanying English translation in heroic verse stands as the earliest surviving work of poetry about New England and the second oldest poem whose origins can be traced directly to the British American colonies. Only two copies of the original 1625 edition are known to survive; one is held at the Huntington Library in San Marino, California, and the other is housed at the British Museum. The Latin portion comprises 309 lines and praises the geographic features, flora and fauna of New England, and spends a majority of its verses describing the Native Americans with awe and curiosity. The English version contains 366 lines, frequently uses obscure terminology, and departs too drastically from the original to be of any assistance for discerning the Latin.
The author is William Morrell, (ca. 1590-after 1626) who received his Bachelors of Arts from Magdalene College, Cambridge in 1615. On May 23 and 24, 1619 Morrell was ordained as a deacon and priest respectively at Peterborough. Several years later in 1623, after receiving a commission by the ecclesiastical court to oversee and administer any churches which were already or might be instituted in the new colonies, Morrell accompanied English navy Captain Robert Gorges to New England, who was tasked with assisting the establishment of the short-lived Wessagusset Colony in present-day Weymouth. The colony was abandoned in the spring of 1624 due to financial difficulties and tensions with the Natives. Robert Gorges served as Governor-General of New England between 1623 and 1624. Gorges returned to England in 1624, but Morrell remained behind in Plymouth for one year to learn more about New England. These two poems are the fruits of his observations. They were published in 1625 in London by John Dawson. These writings make it clear that Morrell was an able classical scholar. He frequently peppers his English with Latin maxims reminiscent of Virgil and Apuleius and he employs numerous references to classical mythological figures and events
New Methods for Selecting Stallion Spermatozoa for Assisted Reproduction
No full textImproved sperm selection techniques are needed to increase the efficiency of equine-assisted reproduction. Single layer centrifugation (SLC) of spermatozoa has been shown to improve the quality of stallion sperm samples. In this study, the functionality of selected stallion spermatozoa was tested by intracytoplasmic sperm injection of equine oocytes after selection by SLC through Androcoll-E or by discontinuous density gradient centrifugation (DGC) through Redigrad and Tyrodes medium with added albumin, lactate, and pyruvate. The mean cleavage rates of the injected oocytes from SLC- and DGC-selected spermatozoa were 67% and 66%, respectively, whereas the proportion of blastocysts developing from cleaved oocytes was 28% and 22%, respectively (P andgt; .05, not significant). An incidental finding was that there was a tendency for SLC-selected spermatozoa to have a higher percentage of spermatozoa with normal morphology than DGC (70% +/- 22% vs. 58% +/- 38%) and for more blastocysts to be obtained from subfertile ejaculates (21 [19.6%] vs. 15 [14.4%], respectively). In further experiments, stallion spermatozoa bound to hyaluronan, although binding may depend on the semen extender and sperm treatment as well as incubation time. In conclusion, SLC-selected stallion spermatozoa function normally when injected into oocytes. SLC may potentially be better than DGC at selecting spermatozoa from subfertile ejaculates, but this effect needs rigorous investigation with a much larger sample size. Use of the hyaluronan-binding assay for assessing the potential fertility of stallion spermatozoa may be useful but requires further evaluation.
Pregnancies Following Artificial Insemination with Spermatozoa from Problem Stallion Ejaculates Processed by Single Layer Centrifugation with Androcoll-E
No full textSome stallions produce ejaculates of low quality and/or low fertility when used for artificial insemination (AI). The purpose of these five case studies was to use Single Layer Centrifugation (SLC) to select the best spermatozoa from problem ejaculates for subsequent use in AI. Sperm quality, in terms of motility, morphology and chromatin integrity, was improved in the SLC-selected samples compared to the corresponding uncentrifuged samples, with the exception of one stallion thought to have ampullary stasis. In this stallion, neither the incidence of spermatozoa with detached heads nor the proportion of damaged chromatin was decreased by SLC, in contrast to previous results. Pregnancies were obtained after using SLC-selected spermatozoa from the five stallions for AI, indicating that the spermatozoa were functional after SLC. Overall, the results suggest that SLC may be useful when preparing AI doses from some problem ejaculates.This is the pre-reviewed version of the following article: J.M. Morrell, G. Mari, G. Kutvolgyi, S. Meurling, B. Mislei, E. Iacono and Heriberto Rodriguez-Martinez, Pregnancies Following Artificial Insemination with Spermatozoa from Problem Stallion Ejaculates Processed by Single Layer Centrifugation with Androcoll-E, 2011, Reproduction in domestic animals (1990), (46), 4, 642-645. which has been published in final form at: http://dx.doi.org/10.1111/j.1439-0531.2010.01721.x Copyright: Blackwell Publishing http://www.blackwellpublishing.com
Struggling With : Labor Relations, Unionism, and Politics in the Rural Midwest Since 1877. By Wilson J. Warren. Iowa City: University of Iowa Press, 2000. Pp. xv, 185. 19.95, paper.
No full textThis fascinating little book recounts a century of labor struggles at the John Morrell and Company meatpacking plant in Ottumwa, a small city in south-central Iowa and the author s hometown. The book is based on a series of articles that appeared in the Annals of Iowa. Iowa s Pride in the title refers to a trademark once used by Morrell.
A follow-up study of the graduates of Clark College, Atlanta, Georgia for the years 1945-1947, 1954
No full text
Basic understandings necessary for the planning and installation of electronic data processing systems, 1967
No full text- …
