48 research outputs found

    All the Factors of Victory: Admiral Joseph Mason Reevesand the Origins of Carrier Airpower,

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    Admiral Joseph Reeves was an impor- tant influence on the development of American naval aviation during the interwar period, but like many other se- nior officers who served in peacetime, he has not received the attention he de- serves. Thomas Wildenberg, building upon his previous work on dive bomb- ing in the U.S. Navy prior to the Battle of Midway, strives to honor Admiral Reeves with a scholarly biography fo- cused on his professional life and contributions

    A Comparison of the Effect of Intermittent and Continuous Infusion of Meropenem on the Prevalence of Nausea in Pediatric Cystic Fibrosis Patients

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    Cystic Fibrosis (CF) is a genetic disease, leading to changes of membrane secretions causing obstruction of smaller airways. CF patients often develop pulmonary infections and require antibiotic treatment. Meropenem is a broad spectrum beta lactam that acts by lysing microbes through interfering with bacterial cell wall synthesis. Although a safe and effective treatment, data on pediatric patients is limited

    Economics as a Source of National Power

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    War by Other Means: Geoeconomics and Statecraft, by Robert D. Blackwill and Jennifer Harri

    Use of Myers-Briggs Personality Types in the Distribution of Students to Team-Based Learning Groups

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    Objectives: To examine students\u27 perceptions of team-based learning (TBL) and the level of confidence associated with the learning format when distributed into teams consisting of diverse personality types and gender. Methods: Team-based learning (TBL) is an active learning tool where students are organized into teams for a specified term but little data exists regarding the best method of distributing students into teams. TBL was utilized in two pharmacy courses. Prior to the start of the 2012 academic year, students completed the Myers-Briggs Type Indicator® (MBTI®) personality test. Students were separated into nine teams of diverse MBTI® types and gender. Pre- and post-tests, administered at the beginning and end of the semester, were utilized to assess the students\u27 perceptions of TBL and the level of confidence associated with the learning format. Descriptive statistics and paired t-tests were performed in SPSS. Results: A total of 53 students were distributed into teams; 26 students (50 percent) were extroverts and a total of 21 students (40 percent) were identified as Sensing-Thinking-Judging MBTI® type

    Student Perceptions of Team-based Learning vs Traditional Lecture-based Learning

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    Objective. To evaluate pharmacy student perceptions of team-based learning (TBL) vs traditional lecture-based learning formats. Methods. First professional year pharmacy students (N5111) at two universities used TBL in different courses during different semesters (fall vs spring). Students completed a 22-item team perceptions instrument before and after the fall semester. A 14-item teaching style preference instrument was completed at the end of the spring semester. Data were analyzed using Wilcoxon signed rank test and Mann-Whitney U test. Results. Students who experienced TBL in the fall and went back to traditional format in the spring reported improved perceptions of teams and preferred TBL format over a traditional format more than students who experienced a traditional format followed by TBL. Students at both universities agreed that the TBL format assists with critical-thinking, problem-solving, and examination preparation. Students also agreed that teams should consist of individuals with different personalities and learning styles. Conclusion. When building teams, faculty members should consider ways to diversify teams by considering different views, perspectives, and strengths. Offering TBL early in the curriculum prior to traditional lecture-based formats is better received by students, as evidenced by anecdotal reports from students possibly because it allows students time to realize the benefits and assist them in building teamwork-related skills

    The Antiproliferative and Apoptotic Effects of Apigenin on Glioblastoma Cells

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    OBJECTIVES: Glioblastoma (GBM) is highly proliferative, infiltrative, malignant and the most deadly form of brain tumour. The epidermal growth factor receptor (EGFR) is overexpressed, amplified and mutated in GBM and has been shown to play key and important roles in the proliferation, growth and survival of this tumour. The goal of our study was to investigate the antiproliferative, apoptotic and molecular effects of apigenin in GBM. METHODS: Proliferation and viability tests were carried out using the trypan blue exclusion, MTT and lactate dehydrogenase (LDH) assays. Flow cytometry was used to examine the effects of apigenin on the cell cycle check-points. In addition, we determined the effects of apigenin on EGFR-mediated signalling pathways by Western blot analyses. KEY FINDINGS: Our results showed that apigenin reduced cell viability and proliferation in a dose- and time-dependent manner while increasing cytotoxicity in GBM cells. Treatment with apigenin-induced is poly ADP-ribose polymerase (PARP) cleavage and caused cell cycle arrest at the G2M checkpoint. Furthermore, our data revealed that apigenin inhibited EGFR-mediated phosphorylation of mitogen-activated protein kinase (MAPK), AKT and mammalian target of rapamycin (mTOR) signalling pathways and attenuated the expression of Bcl-xL. CONCLUSION: Our results demonstrated that apigenin has potent inhibitory effects on pathways involved in GBM proliferation and survival and could potentially be used as a therapeutic agent for GBM

    Luteolin Decreases EGFR-Mediated Cell Proliferation and Induces Apoptosis in Glioblastoma Cell Lines.

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    Glioblastomas are a subtype of gliomas, which are the most aggressive and deadly form of brain tumours. The epidermal growth factor receptor (EGFR) is over-expressed and amplified in glioblastomas. Luteolin is a common bioflavonoid found in a variety of fruits and vegetables. The aim of the present study was to explore the molecular and biological effects of luteolin on EGF-induced cell proliferation and the potential of luteolin to induce apoptosis in glioblastoma cells. In vitro cell viability assays demonstrated that luteolin decreased cell proliferation in the presence or absence of EGF. Immunoblots revealed that luteolin decreased the protein expression levels of phosphorylated Akt, mTOR, p70S6K, and MAPK in the presence of EGF. Furthermore, our results revealed the ability of luteolin to induce caspase and PARP cleavages in glioblastoma cells in addition to promoting cell cycle arrest. Our results demonstrated that luteolin has an inhibitory effect on downstream signalling molecules activated by EGFR, particularly the Akt and MAPK signalling pathways, and provided a rationale for further clinical investigation into the use of luteolin as a therapeutic molecule in the management of glioblastoma. This article is protected by copyright. All rights reserved

    Evaluation of the Anticancer Activity of Bioactive Fraction G Extracted from \u3cem\u3ePavetta crassipes\u3c/em\u3e in Malignant Brain Tumor Cell Lines

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    Objective: Natural products have served as sources of lead compounds that are commonly used in the treatment of human diseases including cancer. Pavetta crassipes has been widely demonstrated to have ethnopharmacological potential in the management of malaria, gastrointestinal conditions, central nervous system behavioral disorders, hypertension, and cancer. The goal of our study was to evaluate the biological and molecular effects of Fraction G, obtained from the plant Pavetta crassipes, on glioblastoma invasive growth and survival. Methodology: The antiproliferative effects of Fraction G, obtained from Pavetta crassipes, was evaluated using the trypan blue exclusion, (3-(4, 5-Dimethylthiazol- 2yl)-2, 5-Diphenyltetrazolium Bromide; MTT), and lactate dehydrogenase (LDH) assays. Flow cytometry and Western blotting analyses were carried out to examine the effects of Fraction G on cell cycle check-points and its effects on epidermal growth factor receptor-mediated signaling of AKT and MAPK pathways. Results: In this paper, we report that the Fraction G obtained from the plant Pavetta crassipes induced a reduction in glioma cell viability and proliferation as well as induced an increase in apoptosis as evidenced by cleaved PARP, increased caspase 3/7 activity, and cell cycle arrest in the G0/G1 check point. Furthermore, we report that Fraction G inhibited the phosphorylation of AKT and MAPK following EGF treatment. Conclusion: Taken together, our results demonstrate that Fraction G has potent inhibitory effects on pathways involved in glioblastoma proliferation and survival

    Use of Turning-Point and SoftChalk Technologies to Foster Classroom Learning

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    Acute Decompensated Heart Failure

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