722 research outputs found
What Do Introductory Students Learn by Creating Shareable Digital Artifacts?
In this critical reflection, an instructor of Introduction to Creative Writing discusses student learning from the study and creation of “sharable digital artifacts”—for example poem films and Instagram poetry. This practice benefits both non-majors and majors as students make gains in specific skills of revision, metaphor making, and image creation. Further, students make gains in threshold concepts of creative writing through the activity of transferring their knowledge across creative writing genres
Triggering p53 after cytokinesis failure
Cells that fail to divide during cytokinesis often arrest in the next G1 phase by a mysterious mechanism that depends upon p53. What triggers this arrest is unclear. New studies, including a report in this issue (Uetake and Sluder, 2004) suggest that this arrest does not occur because cells are polyploid, are binucleate, have multiple centrosome, or have failed cytokinesis, making this phenomenon even more puzzling
The inner centromere is a biomolecular condensate scaffolded by the chromosomal passenger complex.
The inner centromere is a region on every mitotic chromosome that enables specific biochemical reactions that underlie properties, such as the maintenance of cohesion, the regulation of kinetochores and the assembly of specialized chromatin, that can resist microtubule pulling forces. The chromosomal passenger complex (CPC) is abundantly localized to the inner centromeres and it is unclear whether it is involved in non-kinase activities that contribute to the generation of these unique chromatin properties. We find that the borealin subunit of the CPC drives phase separation of the CPC in vitro at concentrations that are below those found on the inner centromere. We also provide strong evidence that the CPC exists in a phase-separated state at the inner centromere. CPC phase separation is required for its inner-centromere localization and function during mitosis. We suggest that the CPC combines phase separation, kinase and histone code-reading activities to enable the formation of a chromatin body with unique biochemical activities at the inner centromere
Religious attendance after elevated depressive symptoms: is selection bias at work?
In an attempt to determine if selection bias could be a reason that religious attendance and depression are related, the predictive value of elevated depressive symptoms for a decrease in future attendance at religious services was examined in a longitudinal panel of 1,673 Dutch adults. Religious attendance was assessed yearly over five years using the single question, “how often do you attend religious gatherings nowadays?” Depressive symptoms were assessed four times within the first year using the Depression subscale of the Brief Symptom Inventory. Logistic regression models of change in attendance were created, stratifying by baseline attendance status. Attenders who developed elevated symptoms were less likely to subsequently decrease their attendance (relative risk ratio: 0.55, 95% CI [0.38–0.79]) relative to baseline as compared to those without elevated symptoms. This inverse association remained significant after controlling for health and demographic covariates, and when using multiply imputed data to account for attrition. Non-attenders were unlikely to start attending after elevated depressive symptoms. This study provides counter evidence against previous findings that church attenders are a self-selected healthier group
Blue-green opponency and trichromatic vision in the greenhouse whitefly (Trialeurodes vaporariorum)
Visual orientation in the greenhouse whitefly ( Trialeurodes vaporariorum Westwood, Hemiptera: Aleyrodidae) is the result of 9wavelength-specific behaviours9. Green-yellow elicits 9settling behaviour9 while ultraviolet (UV) radiation initiates 9migratory behaviour9. Electroretinograms of the photoreceptors9 spectral efficiency showed peaks in the green and the UV range and whitefly vision was said to be dichromatic. In order to study the visual behaviour of T. vaporariorum , nineteen narrow-bandwidth LEDs covering the UV-A and visible range were used in combination with light scattering acrylic glass screens in a small-scale choice arena under greenhouse conditions. Multiple-choice and dual-choice assays were performed, resulting in LED-based behavioural action spectra of settling (green) and migratory behaviour (UV). A potential inhibitory blue-green chromatic mechanism was studied by combining yellow with different blueish LEDs. Intensity dependencies were illustrated by changing LED intensities. Regarding the 9settling response9, highest attraction was achieved by a green LED with a centroid wavelength of 550 nm, while a blue LED with 469 nm proved to be most inhibitory. Behaviour was distinctly intensity dependent. 9Migratory behaviour9 was elicited the most by the UV LED with the shortest available wavelength of 373 nm. The results clearly prove the presence of a green and a yet undescribed blue sensitive photoreceptor and a blue-green opponent mechanism. Furthermore, empirical colour choice models were built and receptor peaks were estimated around 510 - 520 nm (green), 480 - 490 nm (blue) and 340 - 370 nm (UV). Consequently, Trialeurodes vaporariorum possesses a trichromatic receptor setup
Recent Developments--Recent Decisions
All nations recognize the enormous problem of marine pollution. The sources of marine pollution are definable, and there are methods by which these sources may be restricted. Virtually all mankind would prefer less pollution to more. Prevention, however, becomes less attractive in light of its costs, which assume both political and economic characteristics. Varying political and economic climates coupled with problems of sovereignty and national self-interest render agreement on the imposition of standards difficult. This Recent Development will chart past and present efforts at the preservation of the marine environment, consider the issues confronting the United Nations Third Conference on the Law of the Sea and the United Nations Environment Program, and attempt to predict future approaches to this area of international law.
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Plaintiffs, the New York Shipping Association (NYSA) and the International Longshoremen\u27s Association, AFL-CIO (ILA) filed a joint petition with the Federal Maritime Commission (FMC) for an order declaring that a formula in their collective bargaining agreement was not subject to the filing or approval requirements of section 15 of the Shipping Act of 1916. The formula in question established a method for assessing charges to fund a benefit plan created to mitigate the impact on longshoremen of unemployment caused by technological innovation. Petitioners alleged that the formula was not an agreement between persons subject to the Act and, therefore, was not within the purview of section 15. In addition, they argued that because the assessment arrangement was part of the collective bargaining agreement between NYSA and ILA, it was exempt from the provisions of the Act in all respects
Der Sikh-Konflikt im indischen Bundesstaat Punjab : Annäherung an das Psychogramm einer Ethnie
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