1,668 Works

Sea-Bird SBE 52MP

The SBE 52-MP is a Conductivity, Temperature, Depth (pressure) sensor, designed for moored profiling applications in which measurements are made from from a device that travels vertically beneath a buoy, or from a buoyant package that is winched up and down from a bottom-mounted platform.

HIAPER Cloud Radar (HCR)

The HIAPER cloud radar (HCR) is an airborne, polarimetric, millimeter-wavelength radar that will serve the atmospheric science community by providing cloud remote sensing capabilities to the NSF/NCAR G-V (HIAPER) aircraft.

MVZ:Mamm:190382 - Oligoryzomys microtis

James L. Patton

NCAR GPS Advanced Upper-Air Sounding System (GAUS)

GAUS is a balloon-borne rawinsonde sounding system. Through GPS technology, the GAUS measures high vertical resolution of temperature, humidity and winds at locations around the world. Each system includes a meteorological observing station to record thermodynamic data at the surface and the infrastructure to provide local data processing, display and communications. Data from GAUS can be transferred by phone, Internet or the Global Telecommunication System (GTS) to scientists at universities, other research institutions and operational...

Three-View Cloud Particle Imager (3V-CPI) for HIAPER

Paul Lawson &
The Three-View Cloud Particle Imager (3V-CPI) is a combination of three imaging instruments. Two of them comprise a 2D-S instrument, in which two 2D probes image particles as they pass through beams that are oriented orthogonally to each other and the airflow. If particles also lie in the intersection of the sensitive areas of the two beams, they are seen by both 2D probes. In that case, the CPI is triggered to take a high-resolution...

GNSS Instrument System for Multi-static and Occultation Sensing (GISMOS) for HIAPER

James Garrison, Jennifer Haase &
The Purdue GPS multistatic and occultation instrument for atmospheric, land, and ocean remote sensing (GISMOS) is an instrument to measure the water vapor distribution in the troposphere by inversion of the bending angle profile produced during occultation of a GPS satellite by the limb of the Earth. The instrument also uses GPS signals reflected from land or ocean to determine properties of those surfaces (soil moisture and surface roughness, respectively). Occultation samples represent distances of...

Time-of-Flight Aerosol Mass Spectrometer (ToF-AMS) for HIAPER

Jose Jimenez &
This is a version of the Aerodyname Aerosol Mass Spectrometer (AMS), with time-of-flight (TOF) capability, built and certified for operation on the NSF/NCAR GV (HIAPER). It is based on the original quadrupole design, but the addition of TOF capability increases the sensitivity and time (hence spatial) resolution and enables characterization of single particles. The basic measurement is size-resolved determination of the chemical composition of sub-micrometer non-refractory particles with spatial resolution typically less than 1 km.

Autonomous Airborne Ozone Photometer for HIAPER

W. Terry Rawlins, Michael Proffitt &
The HIAPER GV dual-beam, ultraviolet absorption ozone photometer is designed to measure atmospheric ozone mixing ratios in flight by ultraviolet absorption of a flowing air sample in a dual-beam, temperature-controlled sample cell. It is configured for either autonomous or interactive operation within the cabin of the HIAPER GV aircraft. Graphical user interface software provides real-time and post-flight data processing and analysis capabilities for rapid data evaluation and archival. The instrument has been fully inte grated...

Cadherin-linked molecular mechanisms governing the terminal differentiation of human trophoblastic cells in vitro

York Hunt Ng
Background: The formation of the multinucleated syncytial trophoblast of the human placenta is a critical step in pregnancy, which is prone to failure. In these studies, I have examined the role of TWIST, a transcription factor identified as a key repressor of E-cad expression in normal and cancer cells of diverse origins, in the differentiation of human trophoblastic cells in vitro. The invasion of extravillous cytotrophoblasts (EVTs) into the underlying maternal tissues and vasculature is...

How concerns of death affect scientific views : the existential underpinnings of support for intelligent design and discomfort with evolution

Jason Peter Martens
Intelligent design theory (IDT) has received support from the general public, educators, elected officials, and a minority of scientists, who advocate that it be taught alongside evolutionary theory (ET) in high school science classes. Correspondingly, ET has faced considerable opposition from these groups. Given the tremendous amount of scientific evidence supporting ET and the fact that IDT is inherently unscientific (AAAS, 2006) and lacks any empirical support, it is important to understand the underlying psychological...

Collapsing fibres under Kähler Ricci flow on Hirzebruch manifolds

Kael Dixon
In this article we study the Kähler Ricci flow on a class of ℂℙ¹ bundles over ℂℙⁿ⁻¹ known as Hirzebruch manifolds. These are defined by ℙ(Hⁱ⊕ℂ-1), where H is the canonical line bundle, ℂ is the trivial line bundle, and n,i∈ℕ. We follow the work by Song and Weinkove, who study solutions to the Kähler Ricci flow for a Calabi symmetric Kähler metrics on Hirzebruch manifolds. They were able to show that, depending on the...

The politics of protection : conceptualizing climatic displacement and a global protection regime

Megan Aageson-Morlock
Climate change is anticipated to drive millions of people from their homes this century. Estimates indicate that between 200 and 250 million people may be displaced because of rising sea levels, desertification, and increased storm surges working in concert. At present, however, there is no protection regime, institutional mandate, or legal architecture capable of responding to the plight of climatically displaced persons (CDPs). Since 2007, a number of legal regimes have been proposed to provide...

Characterization of the MOS4-associated complex in plant defense signaling

Jacqueline Monaghan
The plant immune system is governed in part by Resistance (R) proteins that recognize pathogenic microorganisms and initiate enduring defense responses. While the terminal outputs of R protein activation are fairly well understood, information about signaling components involved in plant immunity is scarce. We previously showed that MODIFIER OF SNC1, 4 (MOS4) associates with the transcription factor AtCDC5 and the WD-40 protein PRL1 in vivo, forming the MOS4-Associated Complex (MAC). The MAC is required for...

Graduate recitals

Sonja Koruga
The thesis for the Master of Music degree in Piano consists of one solo recital and one full-length ensemble recital. My full-length ensemble recital was performed on March 09, 2008 and the solo recital was performed on March 23, 2010.

Modulation of cardiac voltage-gated potassium channel functional expression by Kinesin I and small GTPases

Yvonne Cheng
Functional expression of voltage-gated potassium (Kv) channels in the plasmalemma is essential for repolarization phase of the cardiac action potential. Therefore, changes in Kv channel plasmalemmal expression can impact cardiac action potential duration and thereby result in arrythmias. The expression of these Kv channels is modulated by a number of different mechanisms, and among these, the most important and potent one is the regulation of the number of channels in the plasma membrane through modulation...

Investigating the role of invasive American signal crayfish (Pacifastacus leniusculus) in the collapse of the benthic-limnetic threespine stickleback species pair (Gasterosteus aculeatus) in Enos Lake, British Columbia

Gerrit Velema
Biodiversity is of critical importance to the quality of life on Earth. In light of rapidly increasing extinction rates in recent years, understanding threats to biodiversity such as habitat destruction, over-exploitation, and the introduction of invasive species is of utmost importance to conservation efforts. Invasive species, in particular, are a threat of great concern in aquatic environments, due, in part, to their potential role in facilitating introgressive hybridization between closely related species. In recent decades,...

Cobalt precipitation by reduction with sodium borohydride

Jianming Lu
The reaction of cobalt reduction with borohydride is very complicated. Various authors obtained different reaction stoichiometries and have proposed a number of mechanisms. There are conflicting claims about the removal of cobalt from zinc electrolyte with sodium borohydride. The present research has focused on the stoichiometry of cobalt reduction with borohydride and on the removal of cobalt from zinc sulphate solution. Cobalt reduction with borohydride releases hydrogen ions resulting in a decrease in the pH...

Low temperature specific heat of LixNbS2 intercalation compounds

Douglas Charles Dahn
This thesis describes a study of the low temperature specific heat of LiⅹNbS₂, where x is between 0 and 1. Samples were prepared by intercalating lithium into niobium disulfide in electrochemical cells. Structural data obtained by x-ray diffraction are presented. These, together with electrochemical measurements, show that staged phases exist for some values of x. The electronic specific heat of LiⅹNbS₂, is consistent with complete charge transfer from the intercalated lithium to the bands of...

A synthetic and geocentric model of organizational management applied to curriculum planning for management education in the PRC : the case of MOFERT

Nailin Bu
This study is an attempt to outline an overall curriculum plan for the management education programs of the People’s Republic of China (PRC), which would be adapted to the needs of the country while drawing on knowledge and resources from the West. This study also searches for an analytical tool to facilitate cross-national comparisons in areas of management. A need-based curriculum planning process is followed, which focuses on the discrepancies between the actual and required...

Studies on the calcium- and phospholipid- dependent protein kinase activity from heart

Bruce Gordon Allen
Protein kinase C (PKC) exists as a family of at least 10 (β1, β2 ,y,σ, ɛ,ɛ’,ξ, ƞ, L) phospholipid-dependent protein kinase activities. The PKC family may be subdivided into two groups: group A ( α, β1, β2, y) which require free calcium ions (Ca2+) in order to become fully active; and group B (σ, ɛ,ɛ’,ξ, ƞ, L) which may not. Expression, and possibly subcellular localization, of each isoform varies with cell type. The aim of...

[Mu]SR studies of 2H-NbSe2

Roger Miller
We report fx+SR measurements in NbSe2 of the penetration depth, A, and the core radius, /9, as a function of temperature and magnetic field. We find that A(H=0T)=1490(11)A at T=4.2K and />(H=0T)=248(2)A at T=4.2K. We observe a field dependence in 1/A2 and a strong field dependence in the core radius at fields H<6kG. We also find a temperature dependence in the core radius below T/Tc=0.3, where the penetration depth is constant, contrary to Landau-Ginzburg theory....

Drift velocity of hot electrons in n-type germanium

Ronald Reginald Burgess
The drift velocity of electrons in n-type germanium has been measured as a function of applied electric field at lattice temperatures of 77°K and 295°K. Three directions of applied field were used, viz. (1, 0, 0), (1, 1, 0) and (1, 1, 1) crystal directions. The range of field strength was from 100 v/cm to 75 kv/cm. A longitudinal anisotropy was observed at 77°K but not at 295°K. At 77°K the drift velocity for a...

On the spin wave approximation in the theory of magnetically ordered crystals

David Anthony Pink
The question of the self-consistency of spin wave theory as applied to different spin arrangements in magnetically ordered crystals has been reinvestigated. A set of equations, involving the probabilities of finding a given number of spin deviations at a given site first proposed by Van Kranendonk and Van Vleck (1958) in connection with a simple cubic antiferromagnet at a temperature of 0°K, is generalised and solved exactly for an arbitrary temperature. Two sets of equations...

Nuclear magnetic resonance in single crystals of tin and cadmium.

Surendra Nath Sharma
A systematic study of the Knight shift parameters has been carried out on single crystal specimens of tin and cadmium over a range from 1⁰ K to just below the melting points. The line widths observed in cadmium are approximately half the widths quoted by other workers, enabling more precise measurements to be made. These measurements show that the anisotropy of the Knight shift in cadmium changes sign between 4⁰ K and 77⁰ K. Pronounced...

The technology and economics of water-borne transportation systems in Roman Britain

Roderick J. O. Millar
The thesis examines a number of questions concerning the design, construction, costs and use of Romano-British seagoing and inland waters shipping. In the first part the reasons for the methods of construction for seagoing and coastal vessels, such as the Blackfriars Ship 1, the St. Peter Port Ship and the Barland's Farm Boat, have been investigated. The constructional characteristics of the two ships are massive floors and frames, with the planking fastened only to the...

Registration Year

  • 2015

Resource Types

  • Physical Object