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The ultrastructure and secretory activity of the ventral prothoracic exocrine gland of the walnut caterpillar (Lepidoptera : Notodontidae)
(1980)
The ventral prothoracic exocrine gland (VPEG) of larvae of Datana integerrima is an unpaired sac arising as an ingrowth of the epidermis. The VPEG lies in the ventral body cavity, beneath the prothoracic nerve ganglion; ...
Computerized closed form solutions to nonserial dynamic programming problems
(1980)
Dynamic programming models are typically solved by considering discrete values of the decision and state variables. Solutions are tabular inform, showing the best decision for discrete values of the state variable. For ...
Temperature distribution around a well during thermal injection and a graphical determination of thermal properties of the aquifer
(1980)
Analytical models of hot water injection into groundwater aquifers were developed in this study. Available analytical models of this problem assume that the caprock overlying the aquifer is of infinite thickness. However, ...
The selection of social studies textbooks for the elementary school
(1980)
The purpose of this study was to develop and field test an instrument which could be used to help select a social studies textbook for a school district. In order to accomplish this purpose, answers to the following questions ...
Toward unified housing policies for the poor of Daegu, Korea
(1980)
The purpose of this study is to analyze the current housing problems in urban Korea and to present a new direction of its housing policy formulation and implementation based on Daegu City's experience. In terms of precedent, ...
Relationships between seasonal forage quality patterns and structural carbohydrates of warm-season grasses and environmental factors
(1980)
Three warm-season grass species were grown to evaluate relationships between forage quality and environmental conditions. Two selections of kleingrass (Panicum coloratum L.), Kleingrass 75 and Kleingrass 75-25, green ...
A study of the effect of various design factors on the performance of complex production lines
(1980)
This dissertation is a study of the effect of various design factors on the performance of production lines. A review of past research on production lines reveals that the majority of production line models reported in the ...
Effects of velocity, surface, and angle of incidence on angle of rebound of tennis balls
(1980)
The purpose of this study was to determine and compare the effects of velocity, surface, and angle of incidence on angle of rebound and velocity of rebound of tennis balls. More specifically, it was the purpose of this ...
Radiographic evaluation of appendicular skeletal maturation in the common marmoset (Callithrix jacchus)
(1980)
The times of appearance and fusion of 75 ossification centers were recorded by age. The appendicular skeletal development of 6 common marmosets was monitored radiographically at weekly intervals from 1 day to 94 weeks of ...