Ruminal Variation in pH, Temperature, Bacterial Flora, and In vitro Activity as Affected by Ration Change and Season

The outstanding importance of the vast member of microorganisms in the rumen to the nutritional physiology of the ruminant makes it imperative that the factors influencing the numbers and types of these organism be thoroughly understood. A knowledge of when these ruminal fluctuations occur and their causes, whether it be due to external environment or dietary change, would be of significant value in the preparation of rations which could stimulate the ruminal flora to their maximum efficiency and in turn receive maximum feed efficiency from the animal. The specific objectives of this project are as follows: to make periodic checks of the in vitro rumen temperature, to make periodic determination of in vitro rumen, to graphically illustrate how these determinations were affected by any of the various factors, to attempt to grow culturally, rumen microorganisms to determine any periodic concentration change which may occur

A statistical analysis of variations in intraregional wage levels in New England

This item was digitized by the Internet Archive

'A jaw for a tooth' - a biased report

Re: Your Editorial in Vol 99, No 3, March 2009 SAMJ . Dear Dr. I take the strongest exception to your unashamed, political diatribe against Israel. The SAMJ is NOT a forum for political articles masquerading under the guise of humanitarian medical concern. You could have found more truthful and pertinent examples closer to home

The ecology of the gipsy moth (Porthetria Dispar L)

Thesis (M.A.)--Boston University, 1949. This item was digitized by the Internet Archive

Flowering Dates of Viola sororia Willd. and V. pensylvanica Michx. at Different Latitudes

The response to daylength has been shown to be significant in the initiation of flowering in many species of vascular plants. Herbarium specimens of Viola sororia Willd. and V. pensylvanica Michx. from a wide range of latitudes were examined to ascertain correlation between dates of flowering and length of day. Two observations were made: the higher the latitude, the later flowering occurred in the spring; and the higher the latitude the greater the daylength at the time of open flowering. It is suggested that these north-south clines represent a genetic response arrived at through natural selection. Further studies arc proposed to test this hypothesis

Flow along the continental slope off Washington, Autumn 1971

Observations of the hydrographic regime across the continental shelf and offshore to depths exceeding 2000 rn were made in Autumn 1971 to investigate the possible extension of the California Undercurrent off the coast of Washington. Closely spaced stations, positioned by depth, were made to the bottom on each crossing of the continental slope. Geostrophic calculations relative to 1000 m and extending up the slope to shallower depths indicated a broad band of northward flow above the continental slope...

An investigation of sands on the uplands adjacent to the Sangamon River floodplain : possibilites as a "blend sand" resource

Ope

Enabling Factor Analysis on Thousand-Subject Neuroimaging Datasets

The scale of functional magnetic resonance image data is rapidly increasing as large multi-subject datasets are becoming widely available and high-resolution scanners are adopted. The inherent low-dimensionality of the information in this data has led neuroscientists to consider factor analysis methods to extract and analyze the underlying brain activity. In this work, we consider two recent multi-subject factor analysis methods: the Shared Response Model and Hierarchical Topographic Factor Analysis. We perform analytical, algorithmic, and code optimization to enable multi-node parallel implementations to scale. Single-node improvements result in 99x and 1812x speedups on these two methods, and enables the processing of larger datasets. Our distributed implementations show strong scaling of 3.3x and 5.5x respectively with 20 nodes on real datasets. We also demonstrate weak scaling on a synthetic dataset with 1024 subjects, on up to 1024 nodes and 32,768 cores

Optical microrotors: Theory, design and fabrication

Building on the ability to exert torques in optical tweezers, optically-driven rotating micromachines have reached the verge of practical application. Prototype devices have been made, and useful applications are being sought. We outline some general principles that can be applied to the design of optically-rotated devices, and describe a method for rigorous computational modelling that is well-suited to the optimization and engineering of such micromachines. Finally, we describe a method for rapid microfabrication of prototypes for testing, and some results of such tests