Mobile Bay turbidity study

The termination of studies carried on for almost three years in the Mobile Bay area and adjacent continental shelf are reported. The initial results concentrating on the shelf and lower bay were presented in the interim report. The continued scope of work was designed to attempt a refinement of the mathematical model, assess the effectiveness of optical measurement of suspended particulate material and disseminate the acquired information. The optical characteristics of particulate solutions are affected by density gradients within the medium, density of the suspended particles, particle size, particle shape, particle quality, albedo, and the angle of refracted light. Several of these are discussed in detail

Chromatographic separation and identification of some peptides in partial hydroylsates of gelatin

Recently we have been engaged in a study of the chemical structure of collagen and gelatin with the object of determining the sequence of the amino acid residues in the polypeptide chains of these proteins. In the course of this study we have made considerable progress in the chromatographic analysis of complex mixtures of peptides and we have isolated and identified several simple peptides which occur in partial hydrolysates of gelatin. The initial separation of the mixture into zones of one or more peptides has been made on a column of ion exchange resin; further separation of the peptides in each zone has been achieved by chromatographing in the form of dinitrophenyl (DNP) peptides on columns of silicic acid-Celite. It is to be hoped that the particular combination of chromatographic methods which has been successfully used in the present study will be helpful in the resolution of the complex mixtures which result from the partial hydrolysis of other proteins

Reflexepileptische Phänomene bei Patienten mit Juveniler Myoklonischer Epilepsie

Reflexepileptische Phänomene scheinen bei JME häufig zu sein. 25 JME-Patienten nahmen an einer Video-EEG-Aufzeichnung mit neuropsychologischer Testung (Lesen, Sprechen, Schreiben, Rechnen, Praxis) teil und wurden mit einer Kontrollgruppe verglichen. Bei 10 JME-Patienten wurden epilepsietypische Veränderungen (ETP) oder Anfälle durch Lesen- oder Sprechen induziert. 5 Patienten erlitten ETP oder Anfälle während der Praxis-Induktion, darunter versteht man Anfälle, die durch eine Kombination aus mentalen und manuellen Tätigkeiten ausgelöst werden. Reflexepileptische Phänomene, besonders lese- und sprechausgelöste Anfälle traten gehäuft bei JME-Patienten auf und deuten möglicherweise auf eine genetische Verwandtschaft zu anderen Reflexepilepsien wie der Leseepilepsie hin. Patienten mit JME und reflexepileptischen Anfällen unterscheiden sich nicht wesentlich von den allgemeinen JME-Charakteristika

Solution of nonlinear algebraic equations characteristic of filter circuits Summary technical report

Digital computer program developed for solving nonlinear algebraic equations characteristic of filter circuit

Optical links in the angle-data assembly of the 70-meter antennas

In the precision-pointing mode the 70 meter antennas utilize an optical link provided by an autocollimator. In an effort to improve reliability and performance, commercial instruments were evaluated as replacement candidates, and upgraded versions of the existing instruments were designed and tested. The latter were selected for the Neptune encounter, but commercial instruments with digital output show promise of significant performance improvement for the post-encounter period

Regular Education Teacher\u27s Perceptions of Inclusion in Virginia

Forty regular education teachers responded to a questionnaire concerning regular education teachers·beliefs and perceptions about the benefits. attitudes, and effectiveness of inclusion. The results were analyzed by calculating percentages and means for each item of the questionnaire and by calculating mean scores for each respondent\u27s questionnaire to examine positive or negative reactions to inclusion. In addition. a t-test was computed. The results indicated that regular education teachers who responded were not strongly positive towards _the inclusion of students with disabilities into regular education classrooms. The t-test showed no significant difference between regular education teachers who have students with disabilities included in their classrooms and those teachers who do not have students with disabilities included in their classrooms 60% or more of the day

Recent Advances In Technics For The Study Of Viruses

The existence of viruses was suspected by Pasteur but it was not until 1897 that active work was begun on these agents. At this time Loeffler and Foesche demonstrated the existence of the virus of foot and mouth disease. Early workers depended upon the filter for the isolation of viruses and an attempt was made to grow viruses in artificial tissue cultures. Diagnostic tests were dependent upon the complement-fixation test and animal protection and neutralization tests