473 research outputs found

    Acariases

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    Citation: Kyle, Hernon Curtis. Acariases. Senior thesis, Kansas State Agricultural College, 1903.Morse Department of Special CollectionsIntroduction: The term acariases is applied to every disease caused by Acarina. The acarina form a separate order in the class Arachnida. Some of the members of this order are commonly known as mites and ticks. The abdomen of the acarina is unsegmented and fused with the thorax, giving the entire body a more or less sack appearance. In many the body is marked with transverse lines which appear like the divisions between minute segments. The majority of the acarina are very small, but some, as certain ticks, are of considerable size. All families of this order, except one, bring forth their young from eggs. The sexes are separate in all the Acarina; however, there is a smaller number of male than females. The males also differ from the females in being smaller and in certain details of conformation. They often have different habits of life. Neumann divides this order into ten families, five of which are of pathological importance. Their names are as follows: Ixodiae, Gamasidae, Trombidae, Sarcopridae, and Demodecidae. All of these have representatives on domestic mammals, and all are found on birds except the Demodecidae. The members of the first three families and certain individuals of the family Sarcoptidae merely live on the epidermic scales, and the remains of hairs and feathers or prick the skin in order to suck the blood. This action on the part of the parasite does not cause disturbance beyond the points of attack. However, the remaining individuals of the family Sarcoptidae and all the members of the family Demodecidae usually cause a very serious disease known aspsora or scabies. This serious disturbance is the result, not only of numerous bites but of the venom implanted, of the gallories they excavate, and of the deep situation in which they locate themselves. These two groups of parasites are called Non-Psoric and Psoric respectively

    Investigating Stormwater Drainage Basin Sediments as a Means of Bacterial Accumulation and Transport Within a South Carolina Estaurine Watershed

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    While the presence of fecal indicator bacteria such as Escherichia coli in urban stormwater has been widely documented, their occurrence and persistence in sediments are not as well understood. Traditional research into bacterial contamination of surface waters has focused on overland transport of waste material and assumes fecal bacteria such as E. coli have short lifetimes in the environment. Recent investigations suggest that E. coli can accumulate in drainage basin sediments and act as a fecal bacterial reservoir within a watershed. This thesis investigated the prevalence of E. coli populations in the sediments and overlying waters of Withers Swash (a tidal creek) under dry and wet weather conditions. Results indicated E. coli persisted in the sediment environment and were resuspened into overlying waters during times of increased flow. Rain event profile results suggested the occurrence of steady state E. coli populations in drainage basin sediments. Additionally, laboratory experiments investigated E. coli colonization of overlying waters and sediments using microcosm environments with drainage basin sediments and stormwater. These lab-based experiments also examined the importance of host sources (human and avian) to bacterial survival, expanding on the growing body of research emphasizing the importance of drainage basin sediments as they enhance the persistence and transport of the fecal indicator bacteria E. coli within a watershed. Each experiment used sediments of varying grain size and organic content to examine the influence of physical characteristics on bacterial prevalence. Results suggested host source of bacteria may be more important to initial bacterial colonization while physical characteristics of drainage basin sediments better explained extended E. coli persistence. Findings also suggested an indirect control of water column bacterial concentration by sediment type and erodibility

    An Investigation into the Prevalence, Quantification, and Survival of Escherichia coli in Stormwater Basin Sediment of Withers Swash, Myrtle Beach, SC

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    2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Managemen

    Acting Social: The Cinema of Mike Nichols

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    This dissertation argues for the study of director Mike Nichols by elucidating his aesthetic, historical, social, and political importance. He ushered in the turn from "Classical" to "New" Hollywood, and studying his work illuminates unacknowledged similarities and differences in both periods. Furthermore, looking at the cultural significance of his oeuvre deepens our understanding of the cultural revolution of the 1960s, as well as key events in the ensuing five decades of American social history. By analyzing the methods for crafting scenarios that Nichols carried forward to the cinema from his seminal work in radio and theater, I generate new insight into the representation of the interpersonal on-screen, particularly through the lenses of gender and sexuality. There is no scholarship devoted to Nichols's study, and I look what his exclusion from debates in Cinema Studies tells us both about his films and about the dominant approaches and theoretical paradigms used to interpret the cinema, particularly regarding concepts such as character, performance, dialogue, the psychological, the human, and the social

    Constraints on Gaussian Error Channels and Measurements for Quantum Communication

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    Joint Gaussian measurements of two quantum systems can be used for quantum communication between remote parties, as in teleportation or entanglement swapping protocols. Many types of physical error sources throughout a protocol can be modeled by independent Gaussian error channels acting prior to measurement. In this work we study joint Gaussian measurements on two modes A\mathsf{A} and B\mathsf{B} that take place after independent single-mode Gaussian error channels, for example loss with parameters lAl_\mathsf{A} and lBl_\mathsf{B} followed by added noise with parameters nAn_\mathsf{A} and nBn_\mathsf{B}. We show that, for any Gaussian measurement, if lA+lB+nA+nB1l_\mathsf{A} + l_\mathsf{B} + n_\mathsf{A} + n_\mathsf{B} \geq 1 then the effective total measurement is separable and unsuitable for teleportation or entanglement swapping of arbitrary input states. If this inequality is not satisfied then there exists a Gaussian measurement that remains inseparable. We extend the results and determine the set of pairs of single-mode Gaussian error channels that render all Gaussian measurements separable
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