4,580 research outputs found
Endogenous sunk costs and the geographic distribution of brand shares in consumer package goods industries..
Blood flow-induced Notch activation and endothelial migration enable vascular remodeling in zebrafish embryos.
Arteries and veins are formed independently by different types of endothelial cells (ECs). In vascular remodeling, arteries and veins become connected and some arteries become veins. It is unclear how ECs in transforming vessels change their type and how fates of individual vessels are determined. In embryonic zebrafish trunk, vascular remodeling transforms arterial intersegmental vessels (ISVs) into a functional network of arteries and veins. Here we find that, once an ISV is connected to venous circulation, venous blood flow promotes upstream migration of ECs that results in displacement of arterial ECs by venous ECs, completing the transformation of this ISV into a vein without trans-differentiation of ECs. Arterial blood flow initiated in two neighboring ISVs prevents their transformation into veins by activating Notch signaling in ECs. Together, different responses of ECs to arterial and venous blood flow lead to formation of a balanced network with equal numbers of arteries and veins
Aberrant lysosomal carbohydrate storage accompanies endocytic defects and neurodegeneration in Drosophila benchwarmer
Lysosomal storage is the most common cause of neurodegenerative brain disease in preadulthood. However, the underlying cellular mechanisms that lead to neuronal dysfunction are unknown. Here, we report that loss of Drosophila benchwarmer (bnch), a predicted lysosomal sugar carrier, leads to carbohydrate storage in yolk spheres during oogenesis and results in widespread accumulation of enlarged lysosomal and late endosomal inclusions. At the bnch larval neuromuscular junction, we observe similar inclusions and find defects in synaptic vesicle recycling at the level of endocytosis. In addition, loss of bnch slows endosome-to-lysosome trafficking in larval garland cells. In adult bnch flies, we observe age-dependent synaptic dysfunction and neuronal degeneration. Finally, we find that loss of bnch strongly enhances tau neurotoxicity in a dose-dependent manner. We hypothesize that, in bnch, defective lysosomal carbohydrate efflux leads to endocytic defects with functional consequences in synaptic strength, neuronal viability, and tau neurotoxicity
A Japan Compact Bus Terminal; Review on Hakata Bus Terminal, Fukuoka
A mass transportation system has a main role in every development process of countries in the modern world. In Japan, transportation infrastructure such as train stations or bus terminals plays as an important node that determines the development of functions and other community activities in the surrounding area. Based on the compact city development concept, various types of transport infrastructure were constructed in the integrated area of city nodes and mixed with a various public and commercial functions and supported with a well-structured management of transportation systems. With the condition of limited land in the city nodes, transport infrastructure has to be built as a compact building. This paper reviews design and system of Bus Terminal in Japan from the architectural perspective with the issue of a compact building. As a study case, Hakata Bus terminal is one of Japanese bus terminal built with a slim building and vertically extended level without bus parking area. The platform was divided into three different floor levels with total ten building stories filled by various public and commercial functions. Time schedule, information system, people and vehicle circulation, and the other aspect become the main support to create a compact bus terminal. However, the commercial function is more prominent than the overall function of the building, thus making Hakata bus terminal does not show the typology terminal design in general. Overall, the terminal provides community services without ignoring the main function as a mass transportation system in a compact bus terminal
State of Utah v. Marie S. McKinnon : Brief of Appellee
BRIEF OF APPELLEE APPEAL FROM THE DISMISSAL OF A CHARGE OF FALSE NOTARIAL CERTIFICATION, A CLASS B MISDEMEANOR, IN THE FIRST JUDICIAL DISTRICT COURT, BOX ELDER COUNTY, THE HONORABLE BEN H. HADFIELD PRESIDIN
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Innovating Pedagogy 2015: Open University Innovation Report 4
This series of reports explores new forms of teaching, learning and assessment for an interactive world, to guide teachers and policy makers in productive innovation. This fourth report proposes ten innovations that are already in currency but have not yet had a profound influence on education. To produce it, a group of academics at the Institute of Educational Technology in The Open University collaborated with researchers from the Center for Technology in Learning at SRI International. We proposed a long list of new educational terms, theories, and practices. We then pared these down to ten that have the potential to provoke major shifts in educational practice, particularly in post-school education. Lastly, we drew on published and unpublished writings to compile the ten sketches of new pedagogies that might transform education. These are summarised below in an approximate order of immediacy and timescale to widespread implementation
Microarray screening of Guillain-Barré syndrome sera for antibodies to glycolipid complexes
Objective: To characterize the patterns of autoantibodies to glycolipid complexes in a large cohort of Guillain-Barré syndrome (GBS) and control samples collected in Bangladesh using a newly developed microarray technique.
Methods: Twelve commonly studied glycolipids and lipids, plus their 66 possible heteromeric complexes, totaling 78 antigens, were applied to polyvinylidene fluoride–coated slides using a microarray printer. Arrays were probed with 266 GBS and 579 control sera (2 μL per serum, diluted 1/50) and bound immunoglobulin G detected with secondary antibody. Scanned arrays were subjected to statistical analyses.
Results: Measuring antibodies to single targets was 9% less sensitive than to heteromeric complex targets (49.2% vs 58.3%) without significantly affecting specificity (83.9%–85.0%). The optimal screening protocol for GBS sera comprised a panel of 10 glycolipids (4 single glycolipids GM1, GA1, GD1a, GQ1b, and their 6 heteromeric complexes), resulting in an overall assay sensitivity of 64.3% and specificity of 77.1%. Notable heteromeric targets were GM1:GD1a, GM1:GQ1b, and GA1:GD1a, in which exclusive binding to the complex was observed.
Conclusions: Rationalizing the screening protocol to capture the enormous diversity of glycolipid complexes can be achieved by miniaturizing the screening platform to a microarray platform, and applying simple bioinformatics to determine optimal sensitivity and specificity of the targets. Glycolipid complexes are an important category of glycolipid antigens in autoimmune neuropathy cases that require specific analytical and bioinformatics methods for optimal detection
Smile, Dictator, You’re on Camera
We investigate the degree to which people in a shopping mall express other-regarding behavior in the dictator game. Whereas many studies have attempted to increase the social distance between the dictator and experimenter and between the dictator and dictatee, we attempt to minimize that social distance between random strangers by video recording the decisions with the permission of the dictators to display their image on the Internet. Offers made by dictators are high relative to other experiments and a nontrivial number give the entire experimental windfall away, however a nontrivial number of people keep everything as well
Basement membranes in obstructive pulmonary diseases
Increased and changed deposition of extracellular matrix proteins is a key feature of airway wall remodeling in obstructive pulmonary diseases, including asthma and chronic obstructive pulmonary disease. Studies have highlighted that the deposition of various basement membrane proteins in the lung tissue is altered and that these changes reflect tissue compartment specificity. Inflammatory responses in both diseases may result in the deregulation of production and degradation of these proteins. In addition to their role in tissue development and integrity, emerging evidence indicates that basement membrane proteins also actively modulate cellular processes in obstructive airway diseases, contributing to disease development, progression and maintenance. In this review, we summarize the changes in basement membrane composition in airway remodeling in obstructive airway diseases and explore their potential application as innovative targets for treatment development
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