4,168 research outputs found
Localization of Prc depends on Loh but not vice versa.
No full text<p>(<b>A–I</b>) Localization of Perlecan and Prc in stage 17 control embryos (A–C), compared to homozygous <i>loh<sup>MB05750</sup></i> (D–F) or homozygous <i>prc<sup>MB03017</sup></i> mutants (G–I). Prc but not Perlecan becomes mis-localized by the absence of Loh. (<b>J–O</b>) Localization of Loh in stage 17 control embryos (J–L) compared to homozygous <i>prc<sup>MB03017</sup></i> mutants (M–O). The localization of Loh to the ECM is not affected by the absence of Prc. Of note, the anti-Loh antiserum needs heat fixation leading to a different appearance of Prc in the stained control animals compared to chemical fixation as shown in A. (<b>P–R</b>) The luminal ECM of cardiomyocytes at embryonic stage 17 is not altered in either homozygous <i>loh<sup>MB05750</sup></i> or <i>prc<sup>MB03017</sup></i> mutants. The arrowheads indicate the thickness of the ECM. (<b>S</b>) Quantification of luminal basement membrane (BM) thickness in animals of the indicated genotypes. Mutants do not show significant alterations in ECM thickness. Error bars shown are standard deviation (s.d.) (<b>T–V</b>) TEM section of the adhesion area between cardiomyocytes (CC) and pericardial cells (PC). Lack of either <i>loh</i> or <i>prc</i> cause gaps between the cells. Scale bars are 250 nm.</p
A PC parallel port button box provides millisecond response time accuracy under Linux
No full textFor psychologists, it is sometimes necessary to measure people's reaction times to the nearest millisecond. This article describes how to use the PC parallel port to receive signals from a button box to achieve millisecond response time accuracy. The workings of the parallel port, the corresponding port addresses, and a simple Linux program for controlling the port are described. A test of the speed and reliability of button box signal detection is reported. If the reader is moderately familiar with Linux, this article should provide sufficient instruction for him or her to build and test his or her own parallel port button box. This article also describes how the parallel port could be used to control an external apparatus
Millisecond accuracy video display using OpenGL under Linux
No full textTo measure people’s reaction times to the nearest millisecond, it is necessary to know exactly when
a stimulus is displayed. This article describes how to display stimuli with millisecond accuracy on a
normal CRT monitor, using a PC running Linux. A simple C program is presented to illustrate how this
may be done within X Windows using the OpenGL rendering system. A test of this system is reported
that demonstrates that stimuli may be consistently displayed with millisecond accuracy. An algorithm
is presented that allows the exact time of stimulus presentation to be deduced, even if there are relatively
large errors in measuring the display time
Frontmatter (Titlepage, Table of Contents, Author List, PC List, Reviewer List)
No full textFront matter including table of contents, author list, PC list, and reviewer list
<i>loh</i> and <i>prc</i> are essential for cellular adhesion of cardiac cells.
No full text<p>(<b>A–I</b>) Progressive loss of pericardial cell adhesion (cells marked by <i>hand</i>C-GFP) in <i>prc<sup>MB03017</sup></i> (D–F) and <i>loh<sup>MB05750</sup></i>/Df(2L)Exel7048 (G–I) mutants indicated by pericardial cell detachment (arrow heads). (<b>J, K</b>) Connection between the larval alary muscle (AM) and the cardiomyocytes (CC) is mainly facilitated by a reticular Prc matrix, covering the pericardial cells (PC). (<b>L–N</b>) Loss of cell adhesion includes the detachment of alary muscles (AM) from the heart in <i>loh<sup>MB05750</sup></i>/Df(2L)Exel7048 (M) or <i>prc<sup>MB03017</sup></i>/Df(3L)vin6 (N) third instar larvae. (<b>O–Q</b>) F-actin arrangement in control (O) <i>loh<sup>MB05750</sup></i>/Df(2L)Exel7048 (P) and <i>prc<sup>MB03017</sup></i>/Df(3L)<i>vin6</i> (Q) mutants third instar larvae. The orientation of the actin fibers is altered by loss of pericardial cell adhesion.</p
High efficiency implementation of PC and PC stable algorithms yields three-dimensional graphs of information flow for the Earth' atmosphere
No full textSeptember 3, 2014.Causal discovery algorithms have recently been applied to several climate applications. In particular, in prior work we have developed methods to recover pathways of interaction in the global climate system, using the classic PC algorithm. However, standard implementations of the PC algorithm cannot handle the large number of variables and temporal models required for this application. This technical report shows that a more efficient implementation of the PC algorithm can provide speed gains of a factor of 1,000 or more. This in turn enables us to calculate graphs of information flow with much higher resolution grids. Furthermore, we can now - for the first time ever - calculate information flow graphs that extend over three dimensions, i.e. rather than just including one layer of the planet's atmosphere we can now capture interactions across several height layers
State variable simulation package for IBM-PC
No full textThis thesis was scanned from the print manuscript for digital preservation and is copyright the author.
Researchers can access this thesis by asking their local university, institution or public library to
make a request on their behalf. Monash staff and postgraduate students can use the link in the References field
Degradation of bisphenol-a-polycarbonate (BPA-PC) optical lenses under simulated harsh environment conditions
No full textThis paper investigates degradation and failure mechanisms of BPA-PC lenses in simulated harsh environment conditions. Exposure of secondary optics in Light Emitting Diode LED-based systems or any other similar applications to environmental stresses can adversely effect the performance and lifetime of products. This paper simulates a harsh environment condition, using a salt bath oven. Salt spray exposure/ageing tests at 45° C were carried out up to four months. Fourier transform infrared-attenuated total reflection FTIR-ATR spectrometer and Lambda 950 Ultraviolet-Visible (UV-VIS) spectrophotometer were used to study the optical and chemical characteristics of aged plates. Results showed that salt bath exposure test resulted in the severe deterioration of optical characteristics BPA-PC samples. Degradation of optical properties of BPA-PC plates is attributable to the oxidation of samples.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic Components, Technology and Material
Heavy pentaquark states Pc(4380) and Pc(4450) in the J/ψ production induced by pion beams off the nucleon
No full textAbstractIn this study, we investigate the J/ψ production induced by pion beams off the nucleon, particularly the heavy pentaquarks Pc(4380) and Pc(4450) in intermediate states, based on a hybridized Regge model. The process involving ρ and π meson exchange in the t channel is considered as background, and the heavy pentaquark exchange is included in the s channel. The coupling constants such as the ρNN and πNN vertices are taken from the NN potentials, whereas those for the J/ψρπ and J/ψππ vertices are determined by using experimental data based on the branching ratios. In order to estimate the Pc(4380) and Pc(4450) coupling constants, we use the experimental upper limit on the total cross section as a guide for the πN→J/ψN reaction. The background total cross section is the order of 10−4–10−3 nb. In the vicinity of the heavy pentaquark masses, the total cross section reaches about 1 nb
Association between physical capacity and likelihood of hospitalization in community-living older adults
No full textABSTRACT The growth of older population requires political, economic and social rearrangement, particularly in health, considering its impact on this matter. The assessment of Likelihood of Hospitalization (LOH) is used as an indicator for the health condition of older adults. However, variables of physical capacity (PC) have not yet been associated with LOH. Thus, the association between PC and LOH was analyzed. This study was epidemiological, cross-sectional, and analytical. The sample was randomly selected from one of the Family Health Teams in Passo d’Areia neighborhood, municipality of Porto Alegre. 317 older adults aged ³65 years were evaluated. PC was evaluated by tests of strength, flexibility, and balance on upper and lower limbs. LOH was evaluated with the Boult rapid screening instrument. For the statistical analysis, LOH has been adjusted in two groups: low-medium and medium high-high (MHH), and the Poisson multivariate regression analysis was used. The adopted significance level was p≤0.05. Among the results found, the physical variables that stayed attached to the LOH-MHH were the strength of lower limbs (PR=1.78; 95%CI=1.04 - 3.04) and flexibility (PR=2.13; 95%CI=1.28 - 3.56). There was a negative association between low levels of lower limb strength and flexibility with LOH-MHH. The prevalence of LOH-MHH among individuals with altered strength for the lower limbs was 78% greater when compared with those with normal strength, and it was 113% greater for those with altered flexibility.</p
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