1,021 research outputs found

    Exploring the Correlates of the Financial Health of Arts Nonprofit Organizations

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    This dissertation focuses on how different resource streams that are extracted from a nonprofit’s environment can impact their financial health. More specifically, I explore the main research question: what are the correlates of arts nonprofits’ financial health? I conduct statistical analyses of original survey data, financial information, and socio-economic data from 2008 to 2013 to test the hypotheses that aligning benefits provided with appropriate revenue sources, supportive socio-economic environments, and collaboration are positively related to financial health, calculated as six measures of long, short, and current-term financial health. Findings indicate that arts nonprofits that matched their benefits with corresponding revenue sources only had higher financial health outcomes when the definition of mixed nonprofits is relaxed. Private arts nonprofits with private funding did have higher equity ratios, although public arts nonprofits with public support had lower equity ratios and change in months of liquidity. Population size and minority residents in a county are negatively associated with months of liquidity. Finally, collaborating arts nonprofits and those that shared financial resources to a greater extent had better financial health outcomes for select measures, although the number of partnerships is not always positively associated with financial health benefits. Results suggest financial health at different time periods have different drivers, and that public and private arts nonprofits have financial health drivers as well. Nonprofit practitioners should examine their portfolio of benefits and revenue, as well as identify current, short, and long-term goals to understand how benefit-revenue alignment, location, and collaboration can impact financial health

    Bonghan Ducts as Possible Pathways for Cancer Metastasis

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    Objective: The present study has been designed to find a possible new route for the metastasis of cancer cells on the fascia surrounding tumor tissue using a novel technique of trypan blue staining. Materials and Methods: Tumor tissues were grown in the skin of nude mice after subcutaneous inoculation with human lung cancer cells. Trypan blue was recently identified as a dye with specificity for Bonghan ducts (BHDs) and not other tissues, such as blood or lymph vessels or nerves. Results: We demonstrate that the trypan blue staining technique allows the first visualization of BHDs which are connected to tumor tissues

    Bonghan Ducts as Possible Pathways for Cancer Metastasis

    Get PDF
    Objective: The present study has been designed to find a possible new route for the metastasis of cancer cells on the fascia surrounding tumor tissue using a novel technique of trypan blue staining. Materials and Methods: Tumor tissues were grown in the skin of nude mice after subcutaneous inoculation with human lung cancer cells. Trypan blue was recently identified as a dye with specificity for Bonghan ducts (BHDs) and not other tissues, such as blood or lymph vessels or nerves. Results: We demonstrate that the trypan blue staining technique allows the first visualization of BHDs which are connected to tumor tissues

    Experience of non-vascular complications following endovascular aneurysm repair for abdominal aortic aneurysm

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    Endovascular aneurysm repair (EVAR) for the treatment of abdominal aortic aneurysm (AAA) is a widely used method, and its decreased invasiveness compared to traditional surgical repair has brought about reduced rates of morbidity and mortality. Several vascular complications related to the procedure have been reported, but non-vascular complications have rarely occurred. We report herein the case of a 78-year-old man who underwent EVAR for AAA and presented with active duodenal ulcer bleeding and acute acalculous cholecystitis as complications after the procedure. We must consider that a wide spectrum of complications may occur following EVAR, and therefore it is important to evaluate the risks of complication and to take the necessary measures to minimize them

    Production of photons by the parametric resonance in the dynamical Casimir effect

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    We calculate the number of photons produced by the parametric resonance in a cavity with vibrating walls. We consider the case that the frequency of vibrating wall is nω1(n=1,2,3,...)n \omega_1 (n=1,2,3,...) which is a generalization of other works considering only 2ω12 \omega_1, where ω1\omega_1 is the fundamental-mode frequency of the electromagnetic field in the cavity. For the calculation of time-evolution of quantum fields, we introduce a new method which is borrowed from the time-dependent perturbation theory of the usual quantum mechanics. This perturbation method makes it possible to calculate the photon number for any nn and to observe clearly the effect of the parametric resonance.Comment: 15 pages, RevTeX, no figure

    Electrical Characterization of Proposed Transpositional Acupoints on the Urinary Bladder Meridian in a Rat Model

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    Specific electrical characteristicsof acupointswere investigated on the urinary bladder (BL) meridian in 14 rats. BL acupointsand non-acupoints on the back were selected and their electrical voltages were measured by using aSPACsystem.The mean voltages of each point or each line were statistically analyzed by using the ANOVA test.The BL meridian showed voltages higher than those of the reference line (P < .05). Bilateral 1st BL lines presented higher voltages than bilateral 2nd BL lines (P < .05). Most BL acupoints had voltageshigher than those for the corresponding reference points (P < .05). In particular, theright BL16 exhibited the biggest difference from the reference point, followed by the left extra BL point-2, the right BL27, the left BL17, and theleft BL45. Additionally, the distributions of neurofilamentsfor several points were investigated by using immunohistochemistry. There was a trend for the BL acupoints to have larger numbers of neurofilaments than the reference points, and that trend seemed to be directly proportional to the difference in voltage between the points.In conclusion, BL acupoints on the back in ratsexhibited specific electric and histologic characteristics. Therefore, those acupointsmay be utilized to investigate the efficacy of acupuncturewith laboratory animals

    Estimating Cell Count and Distribution in Labeled Histological Samples Using Incremental Cell Search

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    Cell proliferation is critical to the outgrowth of biological structures including the face and limbs. This cellular process has traditionally been studied via sequential histological sampling of these tissues. The length and tedium of traditional sampling is a major impediment to analyzing the large datasets required to accurately model cellular processes. Computerized cell localization and quantification is critical for high-throughput morphometric analysis of developing embryonic tissues. We have developed the Incremental Cell Search (ICS), a novel software tool that expedites the analysis of relationships between morphological outgrowth and cell proliferation in embryonic tissues. Based on an estimated average cell size and stain color, ICS rapidly indicates the approximate location and amount of cells in histological images of labeled embryonic tissue and provides estimates of cell counts in regions with saturated fluorescence and blurred cell boundaries. This capacity opens the door to high-throughput 3D and 4D quantitative analyses of developmental patterns

    Estimating Cell Count and Distribution in Labeled Histological Samples Using Incremental Cell Search

    Get PDF
    Cell proliferation is critical to the outgrowth of biological structures including the face and limbs. This cellular process has traditionally been studied via sequential histological sampling of these tissues. The length and tedium of traditional sampling is a major impediment to analyzing the large datasets required to accurately model cellular processes. Computerized cell localization and quantification is critical for high-throughput morphometric analysis of developing embryonic tissues. We have developed the Incremental Cell Search (ICS), a novel software tool that expedites the analysis of relationships between morphological outgrowth and cell proliferation in embryonic tissues. Based on an estimated average cell size and stain color, ICS rapidly indicates the approximate location and amount of cells in histological images of labeled embryonic tissue and provides estimates of cell counts in regions with saturated fluorescence and blurred cell boundaries. This capacity opens the door to high-throughput 3D and 4D quantitative analyses of developmental patterns

    Use of Magnetic Nanoparticles to Visualize Threadlike Structures Inside Lymphatic Vessels of Rats

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    A novel application of fluorescent magnetic nanoparticles was made to visualize a new tissue which had not been detectable by using simple stereomicroscopes. This unfamiliar threadlike structure inside the lymphatic vessels of rats was demonstrated in vivo by injecting nanoparticles into lymph nodes and applying magnetic fields on the collecting lymph vessels so that the nanoparticles were taken up by the threadlike structures. Confocal laser scanning microscope images of cryosectioned specimens exhibited that the nanoparticles were absorbed more strongly by the threadlike structure than by the lymphatic vessels. Further examination using a transmission electron microscope revealed that the nanoparticles had been captured between the reticular fibers in the extracellular matrix of the threadlike structures. The emerging technology of nanoparticles not only allows the extremely elusive threadlike structures to be visualized but also is expected to provide a magnetically controllable means to investigate their physiological functions

    Interference phenomena in the photon production between two oscillating walls

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    We study the photon production in a 1D cavity whose left and right walls oscillate with the frequency ΩL\Omega_{L} and ΩR\Omega_{R} , respectively. For ΩLΩR,\Omega_{L} \neq \Omega_{R}, the number of generated photons by the parametric resonance is the sum of the photon numbers produced when the left and the right wall oscillates separately. But for ΩL=ΩR\Omega_{L} = \Omega_{R} , the interference term proportional to cosϕ\cos \phi is found additionally, where ϕ\phi is the phase difference between two oscillations of the walls.Comment: 7 pages, RevTeX, no figures, a sign error correcte
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