A proposed adjustable RF cable connector

In system that requires negligible loss, it may be necessary to adjust cable length to exact multiple of transmitted wavelength. Adjustable cable connector saves time and cost by eliminating need to add to or cut from cable. Device was especially designed for use with high frequencies. For particular application, connector of suitable dimensions should be used

Universal drill jig

Inexpensive jig can steadily guide drill at selected angles to flat plane from any direction. Jig uses two mutually perpendicular bevel bodies, each corresponding to interval settings. Drill block has spline on one side to engage groove on bevel body at selected angle. Angles are set by loosening wing nuts, tilting drill block to desired angle until spline engages groove, and tightening nuts

Microelectronics packaging technique: A Concept

Plug-in flat packs and flat conductor cable (FCC) can be used to make compact, lightweight, external monitoring system requiring minimum of hard wiring. Microelectronic monitoring panel includes replaceable integrated or hybrid circuit flat packs and FCC

Concept for a multifunctional oscilloscope probe

Multifunctional oscilloscope probe incorporates required electronic components so that any one of three desired functions /direct, demodulation, or low capitance/ can be switched into the oscilloscope. The probe obviates the need for the three seperate oscilloscope probes previously used in checking electronic equipment

Application of satellite remote-sensing data to land selection and management

A pilot project conducted to demonstrate the utility and economy of satellite data in preparing thematic maps of a wilderness area emphasizing those resources of greatest interest to the potential owner is described. Vegetation maps delineating potential commercial timber and maps of suggested mineral prospecting areas of seven scattered regions were prepared by interpretation of LANDSAT images, coupled with a limited amount of ground truth. Images acquired both in winter and summer seasons were registered to township maps and used in making interpretations of the areal extent of commercial timber potentials. The amount of snow cover visible through the forest canopies was found to be a useful indicator of timber potentials. Identification was made of characteristic topographic features which are typical of flood plain deposits or of the well developed trellis drainage patterns which can indicate the strike of structural grain of underlying Cretaceous sedimentary rocks. The presence of igneous and mixed igneous and metamorphic rocks were indicated by combinations of spectral differences and anomalous interruptions of local radial drainage patterns

Multivariate Concentric Square Field unveils behavioral exploratory categories of locomotor activity in mouse model of Down syndrome

poster abstractDown Syndrome (DS), trisomy 21(Ts21), is a genetic condition in which a third copy of chromosome 21 is present, and results in neurodevelopmental deficits including intellectual disability. DS has been modeled in mice; Ts65Dn mouse model displays many of the phenotypes associated with DS, including cognitive deficits. We previously studied behavioral phenotypes of Ts65Dn mice and observed significantly increased locomotor activity in a novel arena (an “open field”). In those studies, treatment of the Ts65Dn mice with ~10 mg/kg/day of epigallocatechin-3-gallate (EGCG), a selective inhibitor of the DYRK1A kinase (one of the genes implicated in the neurodevelopmental deficits in DS and in Ts65Dn mice), failed to attenuate hyperactivity. Locomotor activity in an open field is a basic measure of general exploration in a simple environment, and was only moderately sensitive to the hyperactivity of the Ts65Dn mice. The aim of the current study was to use a more advanced analysis of behavioral patterns of exploration in a more complex, multi-partitioned arena, termed the Multivariate Concentric Square Field (MCSF). The advantage of MCSF is that it provides more elaborate measures of exploratory behavior by examining different categories of exploration: general activity, exploratory activity, risk assessment, risk taking and shelter seeking behavior. Trisomic mice and euploid littermates were treated with a continuous high dose (~100 mg/kg/day) of EGCG or water (controls) beginning at weaning. At seven weeks of age, they were tested in the MCSF on two consecutive days. Our current results indicate that Ts65Dn mice displayed more exploratory behavior compared to controls, and the EGCG treatment may have normalized exploratory behavior toward that of controls. Identifying altered patterns of exploratory behavior in the Ts65Dn mouse and the normalizing effects of EGCG treatment may help provide a therapeutic approach to DS

Mock observations with the Millennium Simulation: cosmological downsizing and intermediate-redshift observations

Only by incorporating various forms of feedback can theories of galaxy formation reproduce the present-day luminosity function of galaxies. It has also been argued that such feedback processes might explain the counterintuitive behaviour of 'downsizing' witnessed since redshifts z ≃ 1–2. To examine this question, observations spanning 0.4 < z < 1.4 from the Deep Extragalactic Evolutionary Probe (DEEP)2/Palomar survey are compared with a suite of equivalent mock observations derived from the Millennium Simulation, populated with galaxies using the galform code. Although the model successfully reproduces the observed total mass function and the general trend of 'downsizing', it fails to accurately reproduce the colour distribution and type-dependent mass functions at all redshifts probed. This failure is shared by other semi-analytical models which collectively appear to 'over-quench' star formation in intermediate-mass systems. These mock lightcones are also a valuable tool for investigating the reliability of the observational results in terms of cosmic variance. Using variance estimates derived from the lightcones, we confirm the significance of the decline since z ∼ 1 in the observed number density of massive blue galaxies which, we argue, provides the bulk of the associated growth in the red sequence. We also assess the limitations arising from cosmic variance in terms of our ability to observe mass-dependent growth since z ∼ 1

Point-of-Care Virologic Testing to Improve Outcomes of HIV-Infected Children in Zambia: A Clinical Trial Protocol

In the absence of early infant diagnosis (EID) and immediate antiretroviral therapy (ART), some 50% of untreated HIV-infected infants die before age 2. Conventional EID requires sophisticated instruments that are typically placed in centralized or reference laboratories. In low-resource settings, centralized systems often lead to result turnaround times of several months, long delays in diagnosis, and adverse outcomes for HIV-infected children. Our clinical trial tests the effectiveness of a new point-of-care (POC) diagnostic technology to identify HIV-infected infants and start providing them life-saving ART as soon as possible