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 20 of 73 for “"C++20"”.
-
The Analysis, Characterization and the Chemical Syntheses of C(20) and C(22) Cyclic Fatty Acid Monomers Formed in Heated Fish Oil
Chemical synthesis of C$\sb{20}$ and C$\sb{22}$ CFAMs was carried out to enable (1) the determination of their physical and chemical properties, (2) to provide standards for the identification and characterization of CFAMs present in heated fish oils and (3) to make available pure standards for use …
-
The effect of temperature on denitrification kinetics and biological excess phosphorus removal in nutrient removal activated sludge systems in temperate climates (12°C - 20°C)
Filamentous bulking in nutrient (N & P) removal activated sludge systems is a problem of considerable magnitude - three quarters of 45 plants surveyed were found to have bulking sludges to the extent that sludge settleability (DSVI) was adversely affected. If filamentous organism proliferation …
-
Osteoarthritis: the role and mechanisms of the chondroprotective peptide Urocortin I
… to protect the human chondrocyte cell line, C-20/A4, from SNAP/NO induced apoptotic death, but little is yet known about its mechanism of action. Therefore the aim of this project is to investigate the potential mechanism through which UCNI exerts its observed protective effects. The studies …
-
Investigation into the immuno-therapeutic potential of melanocortin peptides on activated chondrocytes
… receptors was identified and confirmed in the C-20/A4 chondrocyte cell-line, isolated primary bovine and in situ bovine articular chondrocytes. Pro-inflammatory cytokines including IL-1β, IL-6, IL-8, TNF-α, produced by activated articular chondrocytes significantly up-regulate matrix …
-
Pharmacological profiling of novel melanocortin peptides targeting the hMC1, hMC3 and hMC5 receptors in 2-D and 3-D models of activated chondrocytes
… was initially carried out to ensure that the C-20/A4 cell-line was sufficient to use. Melanocortin receptor expression and regulation of key inflammatory biomarkers in both monolayer 2-D and 3-D micromass constructs of the C-20/A4 chondrocytic cell-line was determined. Cell signalling assays …
-
Nopea Fourier-muunnos – Teoria ja toteutus modernilla C++:lla
… tuoreinta standardiversiota, C++20. Toteutettujen menetelmien nopeutta tutkitaan ja verrataan suhteessa toisiinsa sekä tunnettuun FFT-kirjastoon, FFTW. Lisäksi tutkitaan menetelmien laskentatarkkuutta. Lopuksi analysoidaan vertailumenetelmien tarkkuutta ja pätevyyttä, ja pohditaan …
-
Asymmetric Total Synthesis of the Pentacyclic Indole Alkaloid (+)-Tacamonine
… The latter set the absolute configuration at C-20 bearing the ethyl group in the D-ring, and thereafter, the two fragments were coupled together before being advanced to the radical cyclization precursor. Radical cyclization then led to the formation of the desired cis D/Ering junction in a …
-
Effect of Storage Temperatures on Ice Cream Quality
… standard for ice cream storage is -28.9°C (-20°F). Ice cream production costs may be decreased by increasing the temperature of the storage freezer, thus lowering energy costs. The first objective of this research was to evaluate the effect of four storage temperatures on storage quality of …
-
Studies of androgenic processes in diploid potato
… and elevated incubation temperature (30°C 16h/20°C 8h) (hereafter 35°C-30°C/20°C) enhanced androgenic embryo production. Variation among experiment dates was highly significant. Temperature treatment (35°C-30°C/20°C) during anther culture did not influence the subsequent conversion rate of …
-
The Synthesis and Polymerization of N-Vinylacrylamide.
… which was pyrolyzed at approximately 140°C, 20 mm. The N-vinylacrylamide was identified by NMR, IR, and elemental analysis. The spin decoupling technique was used to analyze the N-vinylacrylamide proton pattern which was complicated by isomerism. The attempted cyclopolymerization of this …
-
Effects of a heat acclimation program on physiologic and psychological responses to work and heat while wearing fire ensemble
… (46--53% V˙O2peak) within a 40 +/- 2°C, 20--22% r.h. environment, wearing FE. Rectal (Trec) mean skin (Tsk), and rectal-skin temperature gradient (T rec-Tsk), heart rate (HR), oxygen uptake (VO2), minute ventilation (VE), rating of perceived exertion (RPE), rating of thermal discomfort …
-
Extraction and Purification of Gamma-Tocotrienol from Rice Bran Oil Deodorizer Distillate
… various solvent:RBODD ratios (5:1, 10:1, 15:1, 20:1) at two temperatures (4°C, -20°C). Hexane (HX)-ethyl acetate (EA)-acetic acid (AA) (97.3:1.8:0.9 v/v/v) provided baseline resolution of all eight tocols. All interactions including solvent*ratio*temperature had a significant effect on tocol …
-
Design of an experiment to investigate submerged arc welding variables
… and 650 amps). (2) Three different steels (M 1020, SAE 1045 and SAE 1095) and (3) Two different electrodes (Hobart type C-10 and C-20) as variables in the experiment. 3. To establish the welding technique and procedure to control welding variables. 4. To collect unavailable data about the …
-
The tribology of laminated magnetic recording heads
… (ME) tapes in three different climates: 25°C/20%r.h., 25°C/80%r.h. and 40°C/80%r.h. X-ray photoelectron spectroscopy (XPS) was used to examine changes the head surface chemistry. Atomic force microscopy (AFM) was used to examine changes in head and tape surface topography. PTR versus cycling …
-
Habituation, Scent-Trailing, and Effects of Temperature Upon the Strike-Induced Chemosensory Searching (SICS) in the Cottonmouth (Agkistrodon Piscivorus)
… was tested using feeding trials at 14-16°;C, 20-22°;C, and 28-30°;C. At warmer temperatures cottonmouths relocated struck prey sooner, swallowed prey sooner, and tended to release prey more often than snakes at lower body temperatures. These data are consistent with the view that there are …
-
Biosynthetic Studies on Geldanamycin and Pactamycin
… from the C(,3) unit and C-17 through C-20 from the C(,4) unit. This pattern was obtained by analysis of coupling patterns and coupling constants in the ('13)C NMR spectrum as well as homonuclear ('13)C-('13)C decoupling. Similarly, in the case of pactamycin C-2'' through C-5'' were …
-
Effects Of Thermal Acclimation On The Critical Thermal Maxima Of The Tropical Cockroaches: Blaptica Dubia, Eublaberus Posticus And Blaberus Discoidalis (blaberidae)
… were acclimated to temperatures of 10°C, 15°C, 20°C, 25°C, 31°C and 37°C for a period of seven days. Blaptica dubia was the only species to survive the acclimation period at temperatures of 10°C and 37°C. All three species survived at 15°C, 20°C, 25°C and 31°C and at each temperature there were …
-
New metastable cathode materials for lithium-ion batteries
… with a discharge capacity of 137 mAh/g after 20 cycles at C/20 and room temperature. At 60°C, all the lithium is removed at the end of the first charge at C/20, with subsequent cycles showing reversible insertion of 1.06 Li-ions when cycled between 1.5 and 4.6 V. The electrochemistry of …
-
Novel Biomaterials for Applications in Cartilage Tissue Engineering
… with a human chondrocyte cell line known as C-20/A4 (Chapter 4) and immortalised mesenchymal stem cells (iMSCs) from one donor with osteoarthritis and one without (Chapter 5). The findings of the polymer characterisation revealed that HPMC 2,6 and HPMC triple were the most hydrophilic …
-
Intraclonal Morphological Plasticity within the Myzus persicae (Sulzer) Complex Related to Host Plant and Temperature
… pepper, and okra, and three temperatures, 15°C, 20°C, and 25°C. The intraclonal plasticity of two tobacco collected morphs and one turnip collected morph was investigated in relation to these combinations of host and temperature in a 4 x 3 x 3 factorial experimental design. Fifth generation …
Page 1 of 4