Study of methods for the improvement of bacterial transport media

A series of 500 transport media recipes was tested for ability to hold pure cultures of Streptococcus equisimilus, Corynebacterium equi, Neisseria perflava, and Haemophilus parainfluenzae for 21 days. Stuart Medium Base with 0.4% agar was used as the control medium for this and the other experiments in the investigation. At the end of the holding period inoculated transport media were quantitatively assayed, and the control media were assayed immediately after inoculation. Three vials of each medium were inoculated with an organism, and each vial's medium was diluted and spread on duplicate plates. Assay media for this experiment included Brain Heart Infusion,(BHIA) Tryptic Soy Agar, and BHIA with 1% Isovitalex enrichment

Microbiological studies relating to clean environments. Part I - Evaluation of the efficiency of a class 100 laminar-flow clean room for viable contamination cleanup

Laminar flow clean room efficiency for viable contamination cleanu

Microbiological studies relating to clean environments. Part II - Deposition of nutrients to surfaces by Rodac plates

Nutrient deposition to surfaces by Rodac plates observed to evaluate microbial growth in clean environmen

Comparative Method of Specific Heat Determination

Engineerin

Studies in the interchange of heat between the bovine and its environment

The effects of thermal environments from 20oC. to 40oC. at high and low humidities on the physiological reactions of young calves

Box Culvert Design

Precast box culverts can be used to quickly solve many challenging drainage problems. This presentation will review how box culverts are specified and designed. Various examples will be used to demonstrate the proper installation techniques and multiple applications for a successful project. Topics will include standard specifications; considerations for live, dead and construction loadings; installation (site preparation, bedding, placement, joint treatment and backfill); and applications (culverts, detention, storm drainage, end treatments, and special fittings)

An improved technique for microbiological sampling of surfaces - Agar spray Research report, period ending 30 Sep. 1968

Improved agar spray technique for sampling surface microorganis

An improved model of the vacuum probe

Vacuum probe microbiological device for sampling large areas lightly loaded with microorganism

Foreign Capital Inflow, Skilled-Unskilled Wage Inequality and Unemployment of Unskilled Labour in a Fair Wage Model

This paper has developed a three-sector general equilibrium framework that explains unemployment of both skilled and unskilled labour. Unemployment of unskilled labour is of the Harris-Todaro (1970) type while unemployment of skilled labour is caused due to the validity of the FWH in the high-skill sector. There are two types of capital one of which is specific to the primary export sector while the other moves freely among the different sectors. Inflows of foreign capital of either type unambiguously improve the economic conditions of the unskilled working class. However, the effects on the skilled-unskilled wage inequality and the extent of unemployment of both types of labour crucially hinge on the properties implied by the efficiency function of the skilled workers