TTU DSpace Repository

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Recent Submissions

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Agency and the Arusha Declaration: Nyerere, NUTA, and Political Discourse in Tanzania, 1966–7
(2023) Bjerk, Paul (TTU)
Opening its general meeting on 27 December 1966, the state-sponsored National Union of Tanganyika Workers, known as NUTA, proposed a combative response to a presidential commission’s investigation into mismanagement in the union. The union’s general secretary also issued an azimio (resolution) that prefigured much of the socialist rhetoric and policy prescriptions that appeared a month later in Tanzanian president Julius Nyerere’s Azimio la Arusha (Arusha Declaration) that refined his policy of African Socialism or Ujamaa. Although the NUTA azimio circulated widely and was submitted to the Arusha party meeting, it was excluded from both the record of that meeting and NUTA’s own file of related material. This elision happened before its main author, NUTA general secretary Michael Kamaliza, was convicted of treason two years later. The suppression of NUTA’s azimio offers a point of entry to investigate the diffuse agency of political rhetoric and the history of Nyerere’s influential speech.
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Tiny spies: mosquito antennae are sensitive sensors for eavesdropping on frog calls
(2023) Pantoja-Sánchez, Hoover; Leavell, Brian C.; Rendon, Bianca (TTU); P. de-Silva, W. A.Priyanka; Singh, Richa; Zhou, Jian; Menda, Gil; Hoy, Ronald R.; Miles, Ronald N.; Sanscrainte, Neil D.; Bernal, Ximena E.
Most mosquito and midge species use hearing during acoustic mating behaviors. For frog-biting species, however, hearing plays an important role beyond mating as females rely on anuran calls to obtain blood meals. Despite the extensive work examining hearing in mosquito species that use sound in mating contexts, our understanding of how mosquitoes hear frog calls is limited. Here, we directly investigated the mechanisms underlying detection of frog calls by a mosquito species specialized on eavesdropping on anuran mating signals: Uranotaenia lowii. Behavioral, biomechanical and neurophysiological analyses revealed that the antenna of this frog-biting species can detect frog calls by relying on neural and mechanical responses comparable to those of non-frog-biting species. Our findings show that in Ur. lowii, contrary to most species, males do not use sound for mating, but females use hearing to locate their anuran host. We also show that the response of the antennae of this frog-biting species resembles that of the antenna of species that use hearing for mating. Finally, we discuss our data considering how mosquitoes may have evolved the ability to tap into the communication system of frogs.
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Mapping Media Developments and Issues: Topics, Clusters, and Content of JMCQ Articles on Communication Technology/Media Channels, 1935–2017
(2023) Rice, Ronald E.; Bucy, Erik P. (TTU)
This study analyzed JMCQ articles in the specific topic area of mass communication technology and media channels, overall and across four 20-year periods. Primary topics changed from emphasizing media industry and policy issues, international issues of information freedom, audience research, and WWII media issues in early periods to more specific regulatory issues, ratings and audience analyses, macro and social issues, and media technology development issues in more recent periods. JMCQ serves as a treasure trove of the history of broadcast media technology and competition, policy debates, and audience interests, with a recent emphasis on more rigorous empirical analyses.
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Water buffalo versus cattle under similar rearing condition. I. Growth and carcass performance
(2023) Rodas-González, Argenis; Huerta-Leidenz, Nelson O. (TTU)
Buffalo has shown a favorable growth performance regarding weight gains under grazing conditions rather than feeding them with concentrate rations. While buffalo may have a heavier body, its dressing yield is lower than cattle due to a higher percentage of non-carcass components, specifically the hide and head. Buffalo evidence more desirable carcass attributes than cattle, so their carcasses might show advantages when graded by quality. Both species present a high variation in carcass yield of individual subprimals. However, buffalo offers a high yield in some high-value subprimals, allowing different muscle-specific commercialization strategies.
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Water buffalo versus cattle under similar rearing condition. II. Eating and nutritional quality
(2023) Huerta-Leidenz, Nelson O. (TTU); Rodas-González, Argenis
Buffalo meat is generally perceived as poor and inferior to beef. Conversely, there is strong advocacy in favor of the nutritional properties of Buffalo meat. Most studies have not compared the quality of meats from water buffalo and cattle produced under the same experimental conditions. This review discusses results from 24 selected experiments reporting eating and(or) nutritional qualities of meats from both species reared under similar feeding and environmental conditions. The evidence reveals the potential of young buffaloes to produce comparable or higher-quality meat than cattle counterparts. Under the same production conditions these species are similar in meat nutrient composition.