The association between advancing paternal age and increased risk of schizophrenia in the off-spring is well established. The underlying mechanisms are unknown. In order to investigate whether the psychosocial environment associated with growing up with an aged father explains the increased risk we conducted a study of all adoptive children in Sweden from 1955-1985 (n =31 188). Their risk of de...

polyimide (PI) as flexible interconnection layer between the W mass W house and movatile capacitor plate capacitor plates. The sensor structure and its basic operating A A principle, its mathematical mass-spring-damper model and the necessary cleanroom technology are described. The measurement results show a sensitivity of 0.15 V/(m/s2) with a corresponding resolution of 0.01 m/s2, an off-axis ...

to study the effects of sowing dates on seed germination and on seed vigor of 12 spring rapeseed cultivars, an experiment was performed in years 2005-2006. during the first year, 12 cultivars of spring rapeseed were planted in the research field of seed and plant improvement institute, karaj, iran. during the second year, standard germination test was conducted to study the performance of the s...

Investigations of breeding ecology of interior least tern (Sternula antillarum athalassos) and piping plover (Charadrius melodus) in the Platte River basin in Nebraska, USA, have embraced the idea that these species are physiologically adapted to begin nesting concurrent with the cessation of spring floods. Low use and productivity on contemporary Platte River sandbars have been attributed to a...

We consider non-stationary free and forced transverse oscillation of an infinite taut string on the Winkler foundation subjected to a discrete mass–spring system non-uniformly moving at given sub-critical speed. The speed is assumed be slowly time-varying function. To describe non-vanishing we use analytic approach based method stationary phase multiple scales. oscillator characterized by parti...

Two novel experiments are reported which improve upon previous experimental studies of Richtmyer-Meshkov instability in that very well controlled initial interfaces are obtained. The first is an incompressible experiment in which an impulsive acceleration is given to a system of two liquids by bouncing it off of a fixed spring. The second is a shock tube experiment in which a well controlled fl...

Coordinated Control of a Nonholonomic Mobile Manipulator p. 139 Exploiting Redundancy for Autonomous Calibration of a Planar Robot p. 151 Models for Automated Earthmoving p. 163 Robot Control in Maxillofacial Surgery p. 173 Experiments and Experiences in Developing a Large Robot Mining System p. 183 Slope Display on a Locomotion Interface p. 193 Control of Contact Forces in Wheeled and Legged O...

Abstract Inspired by the jumping action of frogs, the mechanical structure of four-legs jumping robot is given particularly. This robot is used for the rough terrains or wetland environmental exploration. The four identical legs are mainly composed of a six-bar spring/linkage mechanism integrated with two springs. The D-H parameters, the forward kinematics equation and mechanics analysis on one...

Neonicotinoids currently dominate the insecticide market as seed treatments on Canada's major Prairie crops (e.g., canola). The potential impact to ecologically significant wetlands in this dominantly agro-environment has largely been overlooked while the distribution of use, incidence and level of contamination remains unreported. We modelled the spatial distribution of neonicotinoid use acros...

In the western United States, over half of the water supply is derived from mountain snowmelt, with the snow acting as a natural reservoir, delaying runoff and providing runoff in the spring and summer when it is needed most. Interannual variability of both the magnitude and timing of spring runoff is tremendous, and western states have developed extensive reservoir systems to store water from ...