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Should We Worry About The Fiscal Numerology Of Maastricht?, Willem H. Buiter Mar 1992

Should We Worry About The Fiscal Numerology Of Maastricht?, Willem H. Buiter

Discussion Papers

No abstract provided.


Stabilization And Structural Reform In The Czech And Slovak Federal Republic: First Stage, Bijan B. Aghevli, Eduardo Borensztein, Tessa Van Der Willigen Mar 1992

Stabilization And Structural Reform In The Czech And Slovak Federal Republic: First Stage, Bijan B. Aghevli, Eduardo Borensztein, Tessa Van Der Willigen

Documents

No abstract provided.


Characterization Of Pregnancy Induced Changes In Glucose Metabolism, Stacey Ann Berg Jan 1992

Characterization Of Pregnancy Induced Changes In Glucose Metabolism, Stacey Ann Berg

Yale Medicine Thesis Digital Library

Many reports indicate that pregnancy is a diabetogenic state in which there is both insulin resistance and an exaggerated maternal glucose and insulin response to food ingestion. However, the magnitude of these aberrations and their temporal relationship have not been adequately characterized. This study utilizes the hyperglycemic clamp technique to investigate the insulin secretory response and tissue sensitivity to insulin under hyperglycemic conditions in normal and gestational diabetic pregnancies. Our results indicate that third trimester normal pregnancy is characterized by an increased first phase (108.81+/-13.03 uU/ml) and second phase (228.57+/-43.40 microunits/ml) insulin secretory response as compared to non-pregnant controls (72.93+/-15.76, …


Integral Equation Approach To Tropical Ocean Dynamics: Part I-Theory And Computational Methods, Marcio L. Vianna, Paulo R. Holvorcem Jan 1992

Integral Equation Approach To Tropical Ocean Dynamics: Part I-Theory And Computational Methods, Marcio L. Vianna, Paulo R. Holvorcem

Journal of Marine Research

In linear, three-dimensional, continuously stratified equatorial β-plane ocean models with arbitrary eastern and western boundaries the shallow water equations for each vertical mode must be solved numerically in the horizontal variables. This paper introduces a new numerical method of solution for the time-Fourier transformed shallow water equations with slip boundary conditions at boundaries of arbitrary geometry. The method is based on a boundary integral equation (BIE) for the pressure perturbation response to the specified wind-stress forcing field. All other dependent variables are expressed as boundary functionals of the pressure perturbation. The kernels of all functionals are constructed from the Green's …


The Measurement Of Sediment Irrigation Rates: A Comparison Of The Br- Tracer And 222rn/226ra Disequilibrium Techniques, W. R. Martin, G. T. Banta Jan 1992

The Measurement Of Sediment Irrigation Rates: A Comparison Of The Br- Tracer And 222rn/226ra Disequilibrium Techniques, W. R. Martin, G. T. Banta

Journal of Marine Research

We have carried out a series of experiments designed to allow comparison of sediment irrigation rates determined simultaneously using two methods: the measurement of 222Rn/226Ra disequilibrium in pore waters, and the measurement of distributions of a tracer, Br−, which was added to the water overlying sediments at the start of incubation experiments. The experiments were carried out on fine-grained sediments from Buzzards Bay, MA. We made irrigation rate measurements on sediments in their natural state, as well as on sediments that had been treated to alter macrofaunal abundance and diversity. The range of irrigation rates …


Surface-Intensified Rossby Waves Over Rough Topography, R. M. Samelson Jan 1992

Surface-Intensified Rossby Waves Over Rough Topography, R. M. Samelson

Journal of Marine Research

Observations and numerical experiments that suggest that sea-floor roughness can enhance the ratio of thermocline to abyssal eddy kinetic energy, motivate the study of linear free wave modes in a two layer quasi-geostrophic model for several eases of idealized variable bottom topography. The foeus is on topography with horizontal seale comparable to that of the waves, that is, on "rough" small-amplitude topography. Surface-intensified modes are found to exist at frequencies greater than the flat-bottom baroclinic cut-off frequency. These modes exist for topography that varies in both one and two horizontal dimensions. An approximate bound indicates that the maximum frequency of …


A Two-Layer Gulf Stream Over A Continental Slope, Rick Salmon Jan 1992

A Two-Layer Gulf Stream Over A Continental Slope, Rick Salmon

Journal of Marine Research

We consider the two-layer form of the planetary geostrophic equations, in which a simple Rayleigh friction replaces the inertia, on a western continental slope. In the frictionless limit, these equations can be written as characteristic equations in which the potential vorticities of the top and bottom layers play the role of Riemann invariants. The general solution is of two types. In the first type, the characteristics can cross, and friction is required to resolve the resulting shocks. In the second type, one of the two Riemann invariants is uniform, the remaining characteristic is a line of constant f/H, and …


Modelling The Deep-Chlorophyll Maximum: A Coupled Physical-Biological Approach, Ramiro A. Varela, Antonio Cruzado, Joaquín Tintoré, Emilio García Ladona Jan 1992

Modelling The Deep-Chlorophyll Maximum: A Coupled Physical-Biological Approach, Ramiro A. Varela, Antonio Cruzado, Joaquín Tintoré, Emilio García Ladona

Journal of Marine Research

The Deep Chlorophyll Maximum (DCM) is simulated in two oligotrophic regions (SW Sargasso Sea and NW Mediterranean) using a physical/biological model that couples an upper ocean turbulent model to a nutrient/phytoplankton model. The biological model considers two types of primary producers, heterotrophs and atmospheric in addition to internal nitrate inputs. Model results appear to adequately reproduce the DCM structure in those regions. The DCM depth and magnitude is mainly determined by the vertical eddy diffusion and light extinction. The grazing parameters mainly affect the intensity of the DCM. This suggest the DCM is primarily the result of a balance between …


Inertial Gyres In Decaying And Forced Geostrophic Turbulence, Patrick F. 0 Jan 1992

Inertial Gyres In Decaying And Forced Geostrophic Turbulence, Patrick F. 0

Journal of Marine Research

Numerical simulations of the motion of a turbulent homogeneous fluid in a rectangular beta-plane ocean basin are conducted to examine the influence of lateral boundary conditions on the development of inertial circulations. Three different boundary conditions are considered. Firstly, with a condition of zero vorticity gradient normal to the boundary, inertial Fofonoff gyres, which coincide with the maximum entropy solution of statistical mechanics, develop from the release of an initial random eddy field. Secondly, under a condition of no-stress (free-slip) at the boundary, inertial gyres resembling the Fofonoff flow develop. However, in this case, the linear relationship between potential vorticity …


Active Habitat Selection By Capitella Sp. I Larvae. I. Two-Choice Experiments In Still Water And Flume Flow, Cheryl Ann Butman, Judith P. Grassie Jan 1992

Active Habitat Selection By Capitella Sp. I Larvae. I. Two-Choice Experiments In Still Water And Flume Flow, Cheryl Ann Butman, Judith P. Grassie

Journal of Marine Research

Sediment selection by settling larvae of the opportunistic polychaete Capitella sp. I was determined in laboratory still-water and flume experiments, where larvae were given a choice between two highly contrasting sediment treatments. In most cases, 2-h experiments were conducted with a natural, organic-rich mud and an abiotic, glass-bead mixture with a grain-size distribution similar to the mud, as the sediment treatments. Spatial settlement patterns were also determined in sediment arrays containing mud only. Two types of flume flows were tested, both with a near-surface velocity of ∼5 cm s−1, but one flow was cyclical, varying between about 2 …


Effects Of Polychaetes On Silicate Dynamics And Fluxes In Sediments: Importance Of Species, Animal Activity And Polychaete Effects On Benthic Diatoms, Roberta L. Marinelli Jan 1992

Effects Of Polychaetes On Silicate Dynamics And Fluxes In Sediments: Importance Of Species, Animal Activity And Polychaete Effects On Benthic Diatoms, Roberta L. Marinelli

Journal of Marine Research

Laboratory experiments tested the effects of two polychaetes, a surface deposit feeder Eupolymnia heterobranchia, and a head-down deposit feeder Abarenicola pacifica, on silicate dynamics in sediment porewaters and overlying waters. Experimental chambers of sediment containing an individual deposit feeder, and controls with no macrofauna, were studied over a one month period during the summers of 1989 and 1990. Measurements included temporal changes in vertical depth profiles of pore water silicate concentrations, concurrent determinations of silicate accumulation in the water column, and the activities of experimental. organisms. A diffusion-nonlocal exchange-reaction model was devised to determine, from the pore water profiles, both …


Malondialdehyde Levels In Uterine Washing In Fertile And Infertile Women Throughout The Menstrual Cycle, Laura Michelle Drabkin Jan 1992

Malondialdehyde Levels In Uterine Washing In Fertile And Infertile Women Throughout The Menstrual Cycle, Laura Michelle Drabkin

Yale Medicine Thesis Digital Library

No abstract provided.


Package Of Argentina Letters And Memoranda, International Monetary Fund (Imf) Jan 1992

Package Of Argentina Letters And Memoranda, International Monetary Fund (Imf)

Documents

No abstract provided.


The Left Ventricular Pressure-Thickening Loop : A Potential Approach To The Assessment Of Transmural Myocardial Work, Mitchell Todd Saltzberg Jan 1992

The Left Ventricular Pressure-Thickening Loop : A Potential Approach To The Assessment Of Transmural Myocardial Work, Mitchell Todd Saltzberg

Yale Medicine Thesis Digital Library

No abstract provided.


Assessment Of Progress Towards The Eradication Of Dracunculiasis In The Afram Plains, Ghana, Gregory A. Engel Jan 1992

Assessment Of Progress Towards The Eradication Of Dracunculiasis In The Afram Plains, Ghana, Gregory A. Engel

Yale Medicine Thesis Digital Library

No abstract provided.


The Postoperative Incidence Of Small Bowel Obstruction Following Various Abdominal Procedures : A Six Year Retrospective Cohort Study At Yale-New Haven Hospital, Ross Ian Zbar Jan 1992

The Postoperative Incidence Of Small Bowel Obstruction Following Various Abdominal Procedures : A Six Year Retrospective Cohort Study At Yale-New Haven Hospital, Ross Ian Zbar

Yale Medicine Thesis Digital Library

No abstract provided.


Storage Of Platelet Concentrates Following Ultraviolet-B Irradiation, Robert B. Johnson Jan 1992

Storage Of Platelet Concentrates Following Ultraviolet-B Irradiation, Robert B. Johnson

Yale Medicine Thesis Digital Library

No abstract provided.


Nutrient And Biogenic Particulate Distributions, Primary Productivity And Nitrogen Uptake In The Weddell-Scotia Sea Marginal Ice Zone During Winter, Glenn F. Cota, Walker O. Smith Jr., David M. Nelson, Robin D. Muench, Louis I. Gordon Jan 1992

Nutrient And Biogenic Particulate Distributions, Primary Productivity And Nitrogen Uptake In The Weddell-Scotia Sea Marginal Ice Zone During Winter, Glenn F. Cota, Walker O. Smith Jr., David M. Nelson, Robin D. Muench, Louis I. Gordon

Journal of Marine Research

During austral winter of 1988, we determined the distributions of inorganic nutrients (nitrate, silicic acid, phosphate, nitrite and ammonium) and particulate materials (chlorophyll, biogenic silica, particulate organic carbon and particulate organic nitrogen), as well as primary productivity and rates of nutrient (NO3− and NH4+) uptake in the upper 150 m of the marginal ice zone of the Weddell-Scotia Sea. Nutrient concentrations were high and particulate matter levels were low throughout the study area, but occasionally nutrient minima and particulate maxima occurred near the ice edge associated with warm-core eddies. Chlorophyll concentrations and primary productivity averaged …


A Model For Death Assemblage Formation: Can Sediment Shelliness Be Explained?, Eric N. Powell Jan 1992

A Model For Death Assemblage Formation: Can Sediment Shelliness Be Explained?, Eric N. Powell

Journal of Marine Research

A numerical model for carbonate (shell) accumulation in marine sediments is proposed. Sediment shelliness is controlled by carbonate addition, taphonomic loss, carbonate reorganizing processes, and sedimentation rate. Using representative rates of carbonate production, taphonomic loss, and sedimentary carbonate content, the model shows that insufficient carbonate is produced today in many environments to explain sedimentary carbonate content and that most produced carbonate must be preseIVed despite a generally high capacity for taphonomic loss. An anthropogenically-produced decrease in carbonate production over the last ∼100 yr may explain the former. Representative rates of burial and sedimentation, and a temporal and spatial offset between …


The Dynamic Changes Of Stable Isotopic Ratios Of Carbon And Nitrogen In Suspended And Sedimented Particulate Organic Matter During A Phytoplankton Bloom, Takeshi Nakatsuka, Nobuhiko Handa, Eitaro Wada, Chi Shing Wong Jan 1992

The Dynamic Changes Of Stable Isotopic Ratios Of Carbon And Nitrogen In Suspended And Sedimented Particulate Organic Matter During A Phytoplankton Bloom, Takeshi Nakatsuka, Nobuhiko Handa, Eitaro Wada, Chi Shing Wong

Journal of Marine Research

The dynamic changes of carbon and nitrogen stable isotopic ratios in suspended and sedimented particulate matter were observed together with many other chemical and biological properties during a phytoplankton bloom induced by nutrient addition in a controlled ecosystem enclosure (CEE, about 70 m3) in Saanich Inlet, British Columbia, Canada. Both of the stable isotopic ratios of carbon (δ13C) and nitrogen (δ15N) in suspended particulate organic matter showed characteristic patterns of variations in surface water during the bloom. The δ13C of suspended particulate matter increased with the growth of phytoplankton population and decreased …


The Radiolarian Fauna At The Ice Edge In The Greenland Sea During Summer, 1988, N. R. Swanberg, L. K. Eide Jan 1992

The Radiolarian Fauna At The Ice Edge In The Greenland Sea During Summer, 1988, N. R. Swanberg, L. K. Eide

Journal of Marine Research

Radiolaria were sampled from the plankton at 18 stations during two cruises in the Greenland Sea during summer, 1988. A total of 43 species or categories of radiolaria was found, but over 90% of the radiolarian fauna was dominated by adults or juveniles of 4 species: the spumellarian, Actinomma leptodermum and the nassellaria, Amphimelissa setosa, Pseudodictyophimus gracilipes, and Peridium longispinum. The stations sampled ranged from ice-covered areas high in nutrients to open water areas which were depleted in nutrients. These stations encompassed a gradient in the composition of the radiolarian fauna from an assemblage dominated by juveniles and adults …


The Rise Of Bubbles In A Glass Tube And The Spectrum Of Bubbles Produced By A Splash, P. A. Bowyer Jan 1992

The Rise Of Bubbles In A Glass Tube And The Spectrum Of Bubbles Produced By A Splash, P. A. Bowyer

Journal of Marine Research

Bubbles produced by a volume of 500 cc of water falling through a distance of 1.07 m into a water-filled basin were allowed to rise into an adjacent water-filled tube whose top was sealed at a level of 1.7 m above the level of water in the basin. The rise of these bubbles was recorded on video at a height of 1.5 m above the level of the splash: larger bubbles were recorded first. A model has been devised to describe the rise of such bubbles. The rise speed of the bubbles at the level of the video camera decreased …


Regulation Of Potassium Transport In Rat Mesangial Cells : A Fluorescent Analysis Using The Potassium Sensitive Dye, Pbfi, Scott Eric Kasner Jan 1992

Regulation Of Potassium Transport In Rat Mesangial Cells : A Fluorescent Analysis Using The Potassium Sensitive Dye, Pbfi, Scott Eric Kasner

Yale Medicine Thesis Digital Library

No abstract provided.


The Stability Of A Canonical Front, John Kroll Jan 1992

The Stability Of A Canonical Front, John Kroll

Journal of Marine Research

The stability of a geostrophic frontal current of constant slope over a stratified ocean is investigated using asymptotic techniques for large horizontal wavenumber and a small Burger number. The front is called canonical because it should approximate the edges of eddies or boundary currents. Results show that the front is unstable for an along the front wavenumber greater than f/V0 where V0 is the current velocity. But the instability is confined to a region near the vertex of the front of horizontal extent 0(V0/f). The flow becomes more unstable for increasing …


Transitional Dynamics In Two-Sector Models Of Endogenous Growth, Casey B. Mulligan, Xavier Sala-I-Martin Jan 1992

Transitional Dynamics In Two-Sector Models Of Endogenous Growth, Casey B. Mulligan, Xavier Sala-I-Martin

Discussion Papers

No abstract provided.


Two Blades Of Grass: Research For U.S. Agriculture, Robert E. Evenson Jan 1992

Two Blades Of Grass: Research For U.S. Agriculture, Robert E. Evenson

Discussion Papers

No abstract provided.


Influences Of The Lateral Geniculate Nucleus In The Specification Of Primary Visual Cortex In Macaca Mulatta, Ivan Jose Suner Jan 1992

Influences Of The Lateral Geniculate Nucleus In The Specification Of Primary Visual Cortex In Macaca Mulatta, Ivan Jose Suner

Yale Medicine Thesis Digital Library

No abstract provided.


The Hormonal And Humoral Regulators Of Myocardial Protein Metabolism : The In Vivo Measurement Of The Physiologic Role Of Insulin And Amino Acids In Cardiac Protein Kinetics, Douglas Middleton Dahl Jan 1992

The Hormonal And Humoral Regulators Of Myocardial Protein Metabolism : The In Vivo Measurement Of The Physiologic Role Of Insulin And Amino Acids In Cardiac Protein Kinetics, Douglas Middleton Dahl

Yale Medicine Thesis Digital Library

No abstract provided.


Hormonal Symptomatic And Neuropsychologic Responses To Sugar Intake In Children With Attention Deficit Disorder, Nancy Lynn Dingott Jan 1992

Hormonal Symptomatic And Neuropsychologic Responses To Sugar Intake In Children With Attention Deficit Disorder, Nancy Lynn Dingott

Yale Medicine Thesis Digital Library

No abstract provided.


A Prospective Study Assessing Patients After Anterior Cruciate Ligament Reconstruction With Serial Magnetic Resonance Imaging, Genucom, Kincom And Subjective Evaluation, Ann Marion Smith Jan 1992

A Prospective Study Assessing Patients After Anterior Cruciate Ligament Reconstruction With Serial Magnetic Resonance Imaging, Genucom, Kincom And Subjective Evaluation, Ann Marion Smith

Yale Medicine Thesis Digital Library

No abstract provided.