EBAL PROCEDURES are available for determination of deuterium in water by mass spectrometry. In the method of Solomon (1), water and deuterium oxide are reduced with hot zinc, and lative concentrations of deuterium and hydrogen are measured. ber of investigators have utilized this procedure in precise and ive studies (2-5). Other indirect methods were mentioned by burn et at. (6) in a study in w...

The mathematical study of fuzzy equivalences or T indistinguishabilities has led to the publication of a good many papers see etc It is wor thy of note that within Theoretical Fuzzy Logic the mathematical analysis of T indistinguishabilities is a eld that is important in itself and of undeniable in terest for fuzzy logic applications such as control the ory for instance see etc Furthermore ther...

We ap ply Constructal the ory to the study of the flow struc ture of the hu man re spi ra tory tree. We show that the flow ar chi tec ture that would per form ox y gen a tion of the blood and re moval of car bon di ox ide best, i. e. with low est re sis tance, would be com posed of a chan nel sys tem with 23 bi fur ca tion with a dif fu sive zone (alveolus) at the end. As this tree matches the ...

ACKNOWLEDGEMENTS CHAPTER I: SYNTAX AS A PROJECTION OF THE LEXICON 1. The core-semantic relations and their syntactic realization 2. Adjunct-semantic relations and their syntactic realization Footnotes to Chapter I CHAPTER II: EXTERNAL-ARGUMENTS: ARGUMENTAND ADJUNCT-SUBJECTS 1. Control and Raising Verbs: Some differences 1. The distribution of expletives and idioms 2. The distribution of the pro...

ABsrRACf.-We investigated the life history and demographics of Notropis rafinesquei (Cyprinidae) in three streams in north Mississippi, USA, over 2 y. Size at maturity (22.529.3 mm SL) and the timing and duration of the reproductive period (Apr.-Aug.) were similar among all three streams in both years. We consistendy detected two young-of-the-year cohorts, one strong cohort appearing in early s...

A memory design based on logi cal banks is analyzed for shared memory mul tiprocessor systems In this design each phys ical bank is replaced by a logical bank consist ing of a fast register and subbanks of slower memory The subbanks are bu ered by in put and output queues which substantially re duce the e ective cycle time when the refer ence rate is below saturation The principal contribution ...

ory construction, George Homans pointed out that the theory is not a theory at all. Laughlin and Brady, like Parsons before them, have written what Homans calls an "orienting statement," which identifies an area of concern without making it possible to quantify variables, apply the framework precisely to particular situations, or infer anything from the theory. As even one of the contributors p...

ACCORDING to the standard story, which is unfortunately still found in many physics textbooks, quantum theory emerged when it was realized that classical physics predicts an energy distribution for black-body radiation that disagrees violently with that found experimentally. In the late 1890s, so the story continues, the German physicist Wilhelm Wien developed an expression that corresponded re...

The inner ear in rats is ectodermally derived. It appears as a placode on day 8 of a 22-day gestational period. In the developing inner ear most of the cells undergo terminal mitosis between gestational days 13 and 15. During this critical period of development exposure to toxic substances may result in malformations of the adult inner ear. To test this hypothesis, rat fetuses were exposed to 5...

We review the theory of curvature elasticity of thin" fluid films starting with a phenomenological formalism motivated by microscopic, physical examples. The effects, of finite compressibility 'of the layer, exchange of molecules between the film and the solution, and the intrinsic bending stiffness of the film are taken into account· these degrees of freedom account for all the" important mole...