461 research outputs found

    The Cry of a Revolutionary Spirit: Reactions to the Goals of Three Movements from Revolutionary Groups within the United States of America

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    This thesis explored the power of verbal and non-verbal communication through revolutionary movements in the United States of America. The research focused on the overall question of whether people in America still support key U.S. revolutionary movements (as expressed by three U.S. revolutionary groups--the U.S. Founding Fathers, the Black Panther Party, and the Black Lives Matter group). These three revolutionary movements had similar goals and verbal messages, but there were three very different reactions among people in the United States of America. Overall, it was found that people in the Unites States generally do support the goals of these three U.S. based revolutionary groups, even when the source is not known. When the identity of the source is made known, there still is a great amount of support for the goals of these three U.S. revolutionary groups, and overall there is a positive change for all three. However, this change was not uniform across all three groups nor all the stated goals. Further, agreement with the various revolutionary goals was related to degree of racial identity and political identity in many cases. Therefore, now that we know the answer to this question these results could possibly be able help our society maintain the order that was originally meant to be formed for our society

    The decay of quadrupole-octupole 11^- states in 40^{40}Ca and 140^{140}Ce

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    Background: Two-phonon excitations originating from the coupling of two collective one-phonon states are of great interest in nuclear structure physics. One possibility to generate low-lying E1E1 excitations is the coupling of quadrupole and octupole phonons. Purpose: In this work, the γ\gamma-decay behavior of candidates for the (21+31)1(2_1^+\otimes 3_1^-)_{1^-} state in the doubly-magic nucleus 40^{40}Ca and in the heavier and semi-magic nucleus 140^{140}Ce is investigated. Methods: (γ,γ)(\vec{\gamma},\gamma') experiments have been carried out at the High Intensity γ\gamma-ray Source (HIγ{\gamma}S) facility in combination with the high-efficiency γ\gamma-ray spectroscopy setup γ3\gamma^3 consisting of HPGe and LaBr3_3 detectors. The setup enables the acquisition of γ\gamma-γ\gamma coincidence data and, hence, the detection of direct decay paths. Results: In addition to the known ground-state decays, for 40^{40}Ca the decay into the 313^-_1 state was observed, while for 140^{140}Ce the direct decays into the 21+2^+_1 and the 02+0^+_2 state were detected. The experimentally deduced transition strengths and excitation energies are compared to theoretical calculations in the framework of EDF theory plus QPM approach and systematically analyzed for N=82N=82 isotones. In addition, negative parities for two J=1J=1 states in 44^{44}Ca were deduced simultaneously. Conclusions: The experimental findings together with the theoretical calculations support the two-phonon character of the 111^-_1 excitation in the light-to-medium-mass nucleus 40^{40}Ca as well as in the stable even-even N=82N=82 nuclei.Comment: 11 pages, 6 figures, as accepted in Phys. Rev.

    A Culturally Responsive School Leadership Approach to Developing Equity-Centered Principals: Considerations for Principal Pipelines

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    Principals are important. A recent synthesis of two decades of research on school leadership has documented that effective principals can have a positive impact on school climate, teacher satisfaction and retention, and student academic and other outcomes such as attendance and disciplinary behaviors (Grissom, Egalite, & Lindsay, 2021). Earlier research found that adopting a particular district-wide approach to principal development—known as building "a comprehensive, aligned principal pipeline"—was a powerful way to recruit and support a large corps of effective school leaders (Gates et al., 2019). The research about this approach, however, stopped short of fully addressing one of the most pressing issues in American education: educational equity, where all students learn and flourish in a welcoming, caring, and inclusive environment. Equity requires a commitment to fair and just treatment of each student, a willingness to address structural barriers to their success, and the delivery of resources aimed at providing equitable outcomes

    Biliary stenting in patients with pancreatic cancer: results from a population-based cohort study

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    We aimed to describe management of biliary obstruction (BO) in the context of pancreatic cancer within a population-based cohort.We examined management of BO in 1863 patients diagnosed as having pancreatic cancer in 2010/2011. We used descriptive statistics and logistic regression to describe patterns of biliary stent usage, complications and duration of patency, associations between preoperative stenting and surgical outcomes, and between patient factors and management of jaundice.Almost half of the people in the cohort (n = 909) were jaundiced within 12 months of diagnosis. Two-thirds of these had at least 1 stent inserted. Preoperative stenting, mostly with plastic stents, occurred for 72% of patients who experienced jaundice prior to an attempted resection but was not associated with surgical outcomes. Seventy percent of the jaundiced patients who did not have an attempted resection were stented. Metal stents were less frequently replaced within 30 days than plastic (9% vs 42%). Living in a rural area was associated with reduced likelihood of having jaundice managed.Plastic stents were still used frequently, despite guidelines recommending metal in most contexts. Patients living in rural areas were less likely to have BO managed. This work highlights the need to monitor current practice

    Chemotherapy in patients with unresected pancreatic cancer in Australia: A population-based study of uptake and survival

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    1 Aim Palliative chemotherapy improves symptom control and prolongs survival in patients with unresectable pancreatic cancer, but there is a paucity of data describing its use and effectiveness in everyday practice. We explored patterns of chemotherapy use in patients with unresected pancreatic cancer in Australia and the impact of use on survival. 2 Methods We reviewed the medical records of residents of New South Wales or Queensland, Australia, diagnosed with unresectable pancreatic adenocarcinoma between July 2009 and June 2011. Associations between receipt of chemotherapy and sociodemographic, clinical and health service factors were evaluated using logistic regression. We used Cox proportional hazards models to analyze associations between chemotherapy use and survival. 3 Results Data were collected for 1173 eligible patients. Chemotherapy was received by 44% (n = 184/414) of patients with localized pancreatic cancer and 53% (n = 406/759) of patients with metastases. Chemotherapy receipt depended on clinical factors, such as performance status and comorbidity burden, and nonclinical factors, such as age, place of residence, multidisciplinary team review and the type of specialist first encountered. Consultation with an oncologist mitigated most of the sociodemographic and service‐related disparities in chemotherapy use. The receipt of chemotherapy was associated with prolonged survival in patients with inoperable pancreatic cancer, including after adjusting for common prognostic factors. 4 Conclusions These findings highlight the need to establish referral pathways to ensure that all patients have the opportunity to discuss treatment options with a medical oncologist. This is particularly relevant for health care systems covering areas with a geographically dispersed population

    Does Seed Sanitization Affect the Plant Rhizosphere Microbiome and Its Ability to Compete with the Human Associated Pathogen, E. coli on Salad Crops?

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    Cultivation of crops in controlled environmental agricultural systems may limit microbial colonization and reduce diversity of the microbial communities. Practices like seed and growth medium sanitization may further impact microbial communities in the mature plant and the plants capacity to limit the growth of pathogens through competition. As humans expand their travels to space, understanding plant growth, health, and development in closed environments will be critical to the success of producing a safe, supplemental food source for astronauts. To determine the persistence of a potential human pathogen in plant growth and development, sanitized and unsanitized seeds from, mizuna (Brassica rapa var japonica) and red romaine lettuce (Lactuca sativa cultivar Outredgeous), were inoculated with Escherichia coli, ATCC 21445, germinated under simulated International Space Station (ISS) environmental conditions and harvested every 7 days until maturity. The persistence of E. coli in the rhizosphere was determined by plating on selective media, real time PCR (Polymerase Chain Reaction) and community sequencing of the rhizosphere communities. E. coli was detected in the crops roots and leaves for several weeks post germination. At day 28, plants from sanitized seeds had significantly higher counts of E. coli on the roots than those from unsanitized seeds. E. coli was also detected on a few uninoculated plants indicating airborne cross contamination among plants in the same growth chamber and suggesting an influence of the natural microbiome on human pathogen survival and persistence in leafy greens. Sequencing analysis revealed variations in composition and diversity between the communities. Understanding the microbial community of the rhizospheric microbiome is only the first step in determining the relationships between plants. Additional studies to include genotypic and phenotypic variations in the plants should be considered to determine if the natural microbes in the rhizosphere may contribute to the health and therefore, safety of the edible plants
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