Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"Vessel Size"”.
-
Plant xylem anatomy, dendrochronology and stable carbon isotopes as tools in rainfall reconstruction in Southern Africa
… from a new technique utilising measurements of vessel size and frequency in the cross-sectional xylem anatomy of archaeological charcoal that statements may be made on rainfall trends over the last 2000 years. These results indicate a general decrease in rainfall from 2300 BP to the present with …
-
The design of a compact integral medium size PWR : the CIRIS
… and Secure (IRIS) is an advanced medium size, modular integral light water reactor design, rated currently at 1000 MWt. IRIS design has been under development by over 20 organizations from nine countries, led by Westinghouse. IRIS has a standard Westinghouse PWR core, but is an integral …
-
A Study of the Motion of Air Bubbles Moving Unrestrained in Water
… temperature; contamination; release pressure; vessel size, shape and construction material, and orientation and size of the capillary tube from which the bubbles were released.</p><p>Air bubble velocities in this work were generally low, as compared to the results of other experiments for air …
-
Climate impacts and adaptation in the Dungeness crab fishery: a social-ecological systems perspective
… coping and adaptative strategies varied by vessel size class and geographic region; I then asked how these strategies may have affected the distribution of climate impacts at the time of the closures, and fishing communities’ vulnerability to secondary shocks. Finally, I collaboratively …
-
Climatic reconstruction using wood charcoal from archaeological sites
… anatomy have shown that there are links between vessel size, vessel number and climate. This study demonstrates that the wood anatomy of Rhus is not simply related to climatic factors, necessitating the employment of a wide range of statistical analytical techniques to identify climatic signals. …
-
Assessing the impact of greentree reservoir water management on red oak growth and anatomy in the lower Mississippi Alluvial Valley
… in Southeastern Missouri, and 5) discover if vessel size is related to annual tree growth. Overall, 176 tree core samples were crossdated and converted to basal area increment to analyze tree growth. During years of recorded spring flooding, tree growth was not negatively affected. Basal area …
-
The role of CysLT1R in animal models of colorectal cancer
… of increased levels of VEGF and reduced vessel size. We also investigated the role of CysLT1R in 1) FAP/sporadic colorectal cancer by crossing ApcMin/+ mice with mice lacking CysLT1R expression and in 2) colitis-associated colorectal cancer by employing the AOM/DSS-model on mice lacking …
-
Feto-placental vascular structure and function: comparison of within and between species variations
… resolution and extraction of vasculature down to vessels of approximately 45µm diameter. Branching analysis showed that the structural architecture of the cotyledons varies even within the same placenta, with the greatest asymmetry exhibited in the largest blood vessels. The second aim is to …
-
Al-Ni Nanofilm Powered Miniature Linear Actuator for Medical Devices
… This actuator consists of a small pressure vessel filled with liquid alcohol that undergoes a phase change to gas and generates pressure that can be used to cycle a piston in a drug loaded cylinder. Via exothermic reaction, nanofilm deposits thermal energy into the alcohol filled pressure …
-
Clinical and Angiographic Predictive Factor for the Development of No-reflow/Slow flow Phenomenon during Primary Percutaneous Coronary Intervention in Patients with Acute Myocardial Infarction
… stenosis, minimal luminal diameter and reference vessel size between two groups. Cardiac enzyme(CK, CK-MB, troponin-T) at admission and wall motion score index(WMSI) were higher in no-reflow/slow flow group. Ejection fraction(EF) was lower in no- reflow group. Reperfusion time after 6 hours (65.8% …
-
Studies of the laser thermal probe in cardiovascular disease
… coronary arteries: percutaneous accessibility, vessel size and the susceptibility to thermal injury being the most important. These aspects and subsequent developments in coronary laser angioplasty are discussed further. The final chapter considers a hitherto new area for laser thermal probe …
-
An Examination into the Structure of Freight Rates in the Shipping Freight Markets
… non-stationary counterparts across sectors and vessel sizes, out-of-sample forecasts indicate that models that assumed stationarity or non-stationarity outperformed these models, depending on the sector and vessel size. Additionally, the thesis extends this debate to the volatility of these spot …
-
Ceramic production and distribution in protopalatial Crete : technological, economic and social perspectives.
… methodology this involves detailed analyses of vessel size and shape, fabric (using thin section petrography), construction technique, surface treatment and decoration. Technical variants in different stages of production are thereby identified. Moreover, assessments are made of the skill, …
-
Investigation of ultrasound-measured blood flow related parameters in radial and ulnar arteries
… and the complex flow conditions within the vessels. In this thesis, the errors in ultrasound-measured parameters in the radial and ulnar arteries are investigated using experimental phantoms, computer simulation and on volunteers.<br/><br/>Using the Womersley theory, FR and WSR were …
-
NMR imaging of tumor angiogenesis
… ability to induce the proliferation of new blood vessels, i.e. angiogenesis. Considerable evidence now exists which demonstrates that these tumor vessels are associated with a distinct range of morphological and physiological properties which are not present in normal tissue vasculature. Several …
-
Zur Übertragbarkeit tierexperimenteller endovaskulärer Studien : Unterschiede der Gerinnungs- und Fibrinolyse-Systeme bei häufig verwendeten Tierspezies im Vergleich zum Menschen
… of a particular animal kind are quite often the vessel-size and thereof resulting the applicatibility of different implants (Catheters, Coils, Stents), law-reasons, society-ethical reasons, subject- and experiment-specific use of a particular animal model as well as costs. Less known and less …
-
Supply Chain Management and Logistical Considerations in Distributing Crude Oil from Nigeria to China
The evolution of supply chain management has made significant and continuous contributions to logistical processes. This is highly relevant to crude oil logistics in Nigeria, because both indigenous and multinational oil companies who distribute crude oil from Nigerian ports are yet to adopt an …
-
Synthesis of monodisperse silver nanoparticles for antibacterial purposes
… silver ions, it was desired to prepare uniformly sized particles of smaller than 10 nm. Controlling the size of the formed particles requires consideration of parameters that affect their nucleation and growth (Thanh et al., 2014). These can be thermodynamic, kinetic or stoichiometric parameters. …