Histones are presumed to be of chromosomal origin and provide
both structural and functional elements for chromatin. In like
manner the ribosomal proteins are of ribosomal origin and have
analogous roles. Considerable controversy over their cellular roles
exists because of the inability to compare directly both groups of
proteins. In...
A circuit designed to generate and maintain a constant magnetic
flux is presented by using a sample-data control system, instead of a
continuous control system.
A Hall generator is used as the magnetic sensing element, and
is operated with a pulse bias to allow a large output. The output of...
This study is a comparison of the extent of acceptance by peers
in first-born children and last-born children.
The following hypothesis was tested: There is no difference in
peer acceptance of the first-born child as compared to the last-born
child.
The subjects were students between the ages of 11 years...
The purpose of this investigation was to compare some of the
properties of a spore-forming mutant of Bacillus cereus 569R with
the wild type. The strains were grown under identical conditions in
liquid medium. The mutant, strain 45, was characterized with
respect to growth rate, pH changes in the medium,...
Studies on the absorption of C¹⁴ carboxyl labeled 2, 4-dichlorophenoxyacetic
acid by a susceptible plant (bean) and and resistant
plants (corn and bluegrass) indicated that the chemical was readily
absorbed by all species of plants from a foliar application. Approximately
22% and 42% of the applied chemical was absorbed by...
The primary purpose of the study was to identify the demand
for processed salmon from the West Coast. The basic approach in
the demand analysis was to identify those variables that determine
the supply and demand for processed salmon. An econometric model
was established containing the supply and demand equations...
It is often necessary in communication systems to detect very
small signals that are buried in noise. One device used to accomplish
this is a lock-in amplifier. Initially the theory of operation is considered.
Then the circuit design of a low cost lock-in amplifier is
given. The amplifier, employing linear...
The use of the exponential-transfer-characteristics of a transistor
junction as a means of giving a logarithmic sweep calibration to a
sampling oscilloscope is presented. The prior work in logarithmic
converters leading up to the use of the transistor's transfer properties
is explored. A circuit adapting a sampling oscilloscope to a...
An apparatus and procedure are described for investigating
selective adsorption from a binary vapor mixture as a function of
pressure. The technique measures both total mass adsorption and
adsorbed-phase composition.
Development of the method is outlined. Possible sources of
error are analyzed and are found to be either nonexistent or...
In this thesis a method is presented for maintaining the left
ventricular wall stress of the human heart at a constant level during
the systole (active portion of the heart's cycle). This constant stress
level makes it possible to take isotonic measurements on the heart
muscles.
The left ventricle of...
The purpose of this paper is to show that arithmetic
is consistent if Euclidean geometry is. Specifically, a
model of Peano's axioms [2] is defined in the space of
Euclidean geometry, where Hilberts axioms [3] are taken
to be the axioms of Euclidean geometry.
This paper is concerned with the design of a 21-bit
metal-oxide-semiconductor field-effect transistor (MOSFET)
integrated circuit static shift register.
This circuit consists of three separate 1, 4, and
16-bit static shift registers constructed on a single
monolithic chip, each with independent input and output
terminals.
Type D flip-flops are used...
In recent years the types of engineering data accumulated by many telemetry systems have become so diversified and complex, and
the environment in which these systems operate has become so restricting
that telemetry systems with increased capabilities and decreased
size are becoming a necessity. Advances in integrated circuitry
techniques satisfy...
Soils developed on volcanic ash exhibit several unique properties
not commonly observed in soils formed on other geologic
material. Low thermal conductivities, low volumetric heat capacities,
slow transport phenomena, excess macro-drainage and
development of unique suites of clay minerals are some properties
thought to be directly related to the vesicular...
An analog simulation of the postural control system (PCS) of a
dog is used to illustrate how modern systems simulation can be applied
to a study of complex life systems. Even though many bold
assumptions were required to adequately simplify the PCS model, the
simulation provided intuitive insight and gave...
The three-phase squirrel-cage induction motor is rugged, compact,
inexpensive, can be totally enclosed and requires little maintenance.
Its use as a variable speed drive has been limited, however, by the
state-of-the art of control components.
The advent and continuing development of the silicon controlled
rectifier and associated solid-state components has...
At the time of this study 19 states have entered into agreements, one state agreement is pending and one state has submitted its proposal for entering into an agreement with the Atomic Energy Commission for the purpose of assuming regulatory authority over (1) byproduct, (2) source and (3) special nuclear...
An extensive literature survey investigated methods and approaches
for evaluating intangible economic factors at the strategic
and tactical levels of managerial decision making. These sources
provided: 1) the background for a theoretical decision making
algorithm developed for comparing alternative economic proposals
for effectiveness at the strategy levels, and 2) a...