The Influence of Length of Storage of Bovine Semen on Conception Rate under Field Conditions

It is the purpose of this study to determine whether under conditions of routine handling in artificial breeding associations there is a decline in semen fertility from day to day and also to determine the magnitude of this decline. Tabulation of such data will not only be of value in determining the effect of frequent semen collection on the over-all artificial breeding results but will also serve as a basis of comparison in investigational work directed toward increasing the efficiency of artificial breeding

Effect of environmental temperature and the thyroid gland on fertility in the male rabbit

Published October 1951. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalo

An automated environment for soils- and terrain-dependent applications

This paper explains the development of an integrated information environment that is designed specifically for applications dependent on information related to soil types and terrain of the project site. This covers a wide variety of applications such as shallow and deep foundations, trenching, earthmoving and tunneling. The design of this environment takes into consideration the typical requirements of the project team with an emphasis on integrating requirements for both design and construction. The environment reported here is comprised of three main modules, a relational database for the storage and display of soil borelog information, a geographic information system that displays the geographical locations of soil studies, and a module that is used to develop a three-dimensional profile of the soil layers between any number of borelogs. The user may also develop cross sections of soil layers in any direction. This paper reports on the hardware and software used and concludes with a discussion of future extensions to the system

Resource-based simulation libraries for construction

Discrete event simulation modelling has been used successfully in a wide range of industrial and manufacturing applications. In construction applications, even though simulation has been applied, it still is extremely limited in terms of wide deployment in construction projects. Several reasons limit the effective implementation of this technology in construction. Chief among them is the time needed to develop the simulation model. While developing models for industrial applications is just as time consuming, the perpetual nature of manufacturing activities, may make this investment worthwhile. However, this is not the case in construction. In this research, the authors approach the problem through the development of a library of preprogrammed construction resources. The user need only select the required resources, and specify the project logic by linking these resources together. Benefits of this approach are the increased communication between the members of the construction team. Also the potential application of simulation tools in unforeseen construction situations where the time associated with hiring a simulation programmer may not available and a quick response is required.