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We examine whether a firm’s anti-takeover provisions affect the profitability of its acquisitions. We find that acquirers with more anti-takeover provisions experience significantly lower announcement stock returns relative to acquirers with fewer anti-takeover provisions. Moreover, acquirers with more anti-takeover provisions make diversifying acquisitions(More)
Plant environmental responses involve dynamic changes in growth and signaling, yet little is understood as to how progress through these events is regulated. Here, we explored the phenotypic and transcriptional events involved in the acclimation of the Arabidopsis thaliana seedling root to a rapid change in salinity. Using live-imaging analysis, we show(More)
β-thalassemia, one of the most common genetic diseases worldwide, is caused by mutations in the human hemoglobin beta (HBB) gene. Creation of human induced pluripotent stem cells (iPSCs) from β-thalassemia patients could offer an approach to cure this disease. Correction of the disease-causing mutations in iPSCs could restore normal function and provide a(More)
It is generally understood that foxtail millet and broomcorn millet were initially domesticated in Northern China where they eventually became the dominant plant food crops. The rarity of older archaeological sites and archaeobotanical work in the region, however, renders both the origins of these plants and their processes of domestication poorly(More)
Bioactivity-guided fractionation of the cytotoxic extract of Aspergillus niger, an endophytic fungus from the Chinese liverwort Heteroscyphus tener (Steph.) Schiffn., afforded five new naphtho-γ-pyrones, rubrofusarin-6-O-α-D-ribofuranoside (1), (R)-10-(3-succinimidyl)-TMC-256A1 (2), asperpyrone E (3), isoaurasperone A (4), and isoaurasperone F (5), as well(More)
iASPP is a key inhibitor of tumour suppressor p53 and is found to be up-regulated in certain malignant conditions. The present study investigated the expression of iASPP in clinical lung cancer, a leading cancer type in the world, and the biological impact of this molecule on lung cancer cells. iASPP protein levels in lung cancer tissues were evaluated(More)
This paper adresses the important problem of speech detection. It describes the implementation of 3 speech detection methods and compares their performance under different signal-to-noise ratio (SNR) and stationarity conditions. The method that dynamically adjusts its thresholds is found to be the most reliable, even under very adverse recording conditions.(More)
A vehicular ad hoc network (VANET) is a highly mobile wireless ad hoc network that is targeted to support vehicular safety, traffic monitoring, and other applications. Mobility models used in traditional mobile ad hoc networks cannot directly be applied to VANETs since real-world factors such as road layouts and traffic regulations are not considered. In(More)
We examine the benefits and costs associated with foreign independent directors (FIDs) at U.S. corporations. We find that firms with FIDs make better cross-border acquisitions when the targets are from the home regions of FIDs. However, FIDs also display poor board meeting attendance records and are associated with a greater likelihood of intentional(More)