Custom design of CMOS read only memories for VLSI residue number system hardware.

Dept. of Electrical and Computer Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1988 .R353. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.Sc.)--University of Windsor (Canada), 1988

Influence of oxygen enrichment on compression ignition engines using biodiesel blends

The influence of oxygen enrichment on performance and emission characteristics of a single cylinder diesel engine operated with biodiesel blends have been investigated in this work. The methyl ester of jatropha biodiesel was selected as bio-diesel and four blends (B10, B20, B30, and B40) were selected for experimental investigations. The performance and emission characteristics were obtained for the these blends along with three oxygen enrichment flow rates (1, 3, and 5 L per minute) using an oxygen cylinder at the air intake in the diesel engine. The performance and emission characteristics were studied and compared with the diesel and biodiesel. It was observed that, oxygen enrichment enhances the brake thermal efficiency, HC, CO, and smoke. B10 biodiesel with 5 L per minute oxygen enrichment was found to be the best fuel for biodiesel operation

Transient computational fluid dynamics investigations on thermal performance of solar air heater with hollow vertical fins

Evaluation of experimental thermal performance of a single pass solar air dryer is compared with a transient CFD studies is performed. Vertical hollow plates are placed below the absorber plate and compared against the flat solar absorber plate for its performance improvement. Effect of mass-flow rate, the outlet temperature of air is computationally analyzed in comparison with the experimental work, transient boundary conditions for CFD like ambient temperature, solar insolation are taken from the experimental work, and computational results are in good agreement of with experimental results with maximum error percentage of 10%. Thermal efficiency was increased with increase in mass-flow area for without fin configuration, for a specific mass-flow rate thermal efficiency had a good improvement with fin configuration than the without fin configuration

Modeliranje termičkih karakteristika luka (Allium Cepa L. var Aggregatum) u zavisnosti od sadržaja vlage

The thermal properties of multiplier onion namely thermal conductivity, thermal diffusivity and specific heat were determined in the moisture range of 80.87 to 88.84 % w.b. Thermal conductivity was determined using a line heat source transient heat transfer method whereas the thermal diffusivity was determined by Dickerson method using the thermal diffusivity probe. The thermal conductivity and specific heat of onion increased whereas the thermal diffusivity decreased with increase in moisture content. The thermal conductivity, thermal diffusivity and specific heat of onion ranged from 0.17 ± 0.01 to 0.53 ± 0.03 W/mK, 4.32 x 10-7 ± 0.58 to 2.01 x 10-7 ± 0.11 m2/s and 1.01 to 5.75 J/kg.K, respectively. Mathematical modeling was done using the linear regression analysis to predict the specific heat of onions. Among the different models developed, the empirical equation which involved the thermal diffusivity and moisture content predicted the specific heat of onion with a R2 of 0.974.Termalne osobine luka, kao što su: toplotna provodljivost, toplotna difuzija i specifična toplota su određivane u opsegu vlage od 80.87 do 88.84%. Toplotna provodljivost je određena metodom prolaznog prenosa toplote dok je toplotna difuzija određena Dickerson metodom, korišćenjem toplotne difuzione sonde. Toplotna provodljivost i specifična toplota crnog luka porasle su dok je toplotna difuzija smanjena sa povećanjem sadržaja vlage. Toplotna provodljivost, toplotna difuzija i specifična toplota crnog luka u rasponu od 0,17 ± 0,01 na 0,53 ± 0,03 V/mK , 4.32 h 10-7 ± 0,58 do 2,01 k 10-7 ± 0,11 m2/s i 1,01 do 5,75 J/kg.K , redom. Matematičko modeliranje je urađeno pomoću linearne regresione analize predviđene specifične toplote luka. Među različitim razvijenim modelima, empirijska jednačina koja uključuje toplotnu difuziju i sadržaj vlage predvidela je specificnu toplotu crnog luka sa R2 od 0,974

Oxidized low density lipoprotein and paraoxonase activity in coronary artery disease

  Background: High-density lipoprotein (HDL) has a reverse relation with incidence of coronary artery disease (CAD). Paraoxonase (PON) is an HDL associated enzyme responsible for antioxidant capacity of HDL. Oxidative modification of LDL results in formation of oxLDL. This can be reduced by Paraoxonase, which has anti-inflammatory and antioxidant function. Aim: To evaluate and compare the level of HDL, oxLDL and Paraoxonase (PON) activity in Coronary Artery Disease patients with controls. Effort was also made to correlate HDL with PON, also to correlate OxLDL with PON and HDL. Materials and Method: 60 clinically proven CAD patients within the age group of 35 to 70 were selected from OPD of Dr. Somervell Memorial CSI Medical College, Kerala. 60 controls within the same age group without any history of CAD was selected from subjects coming for Health Checkup. Results: HDL and PON were significantly lowered in CAD patients than in controls (P<0.05). OxLDL, Total Cholesterol, Triglyceride, LDL and VLDL were significantly higher in CAD patients than in controls (P<0.05). Correlation Analysis showed a positive correlation of HDL and PON. Statistically significant negative correlation was observed in case of oxLDL with PON and HDL

Scaled up on direct methanol fuel cell under different operating conditions

A direct methanol fuel cell with an active area of 100 cm2 was tested experimentally under a variety of operating situations to determine its overall performance. Different operational parameters, such as anode flow rate (1–5 ml/min), cathode reactant (Air/Oxygen) and cathode flow rate (100–2000 ml/min) are the most influencing parameter, and the performance output of each parameter are compared. In addition, different cathode flow channels, such as serpentine and sinuous, are used to improve reactant supply, and their performance is compared with one another. Using sinuous flow field at the cathode and 3 ml/min of methanol and 500 ml/min of oxygen, the maximum power density of 24 mW/cm2 has been achieved