Chemistry of the system: Al2O3(c)minus HCL aqueous

In order to study exhaust gas chemistry for the space shuttle, the vapor pressure of 2 to 1 weight mixtures of 3-M hydrochloric acid and Al2O3 was studied over a l80 minute reaction period at 31 C. The Al2O3 sample was one of high surface area furnished by NASA Langley Research Center. A brief review is given for aqueous aluminum chemistry, and the chemical reactions of combustion products (exhaust gases) of aluminum propellant binders for the space shuttle are listed

Evolution of carbonaceous chondrite parent bodies: Insights into cometary nuclei

It is thought that cometary samples will comprise the most primitive materials that are able to be sampled. Although parent body alteration of such samples would not necessarily detract from scientists' interest in them, the possibility exists that modification processes may have affected cometary nuclei. Inferences about the kinds of modifications that might be encountered can be drawn from data on the evolution of carbonaceous chondrite parent bodies. Observations suggest that, of all the classes of chondrites, these meteorites are most applicable to the study of comets. If the proportion of possible internal heat sources such as Al-26 in cometary materials are similar to those in chondrites, and if the time scale of comet accretion was fast enough to permit incorporation of live radionuclides, comets might have had early thermal histories somewhat like those of carbonaceous chondrite parent bodies

What we know about Mars (but otherwise wouldn't) if it is the shergottite parent body

The evidence that some meteorites may actually be samples of fairly large solar system bodies, specifically the moon and the planet Mars was presented. The proposed martian meteorites, called shergottites are igneous rocks that crystallized from molten magmas. Their crystallization ages are much too young to have formed by internal melting within small asteroids, and the unusual chemical composition of gases trapped when these rocks were severely shocked matches that of the martin atmosphere measured by Viking. The implications of these samples for martian evolution was discussed and suggested, that if Mars is the shergottite parent body, the martian interior is much more like that of the earth than has been previously thought. Shergottites explain presence of small magnetic field indicate that volatileement concentratins in Mars should be similar to the Earth, and explain the great lengths of volcanic flows on the martian surface

Starch-Based Diet and Type 2 Diabetes

The starch based diet was discovered and developed by Dr. John McDougal who claimed that a diet consisting of 70% starch, 20% vegetable and 10% fruit while eliminating meat, fat and diary products has helped his patients reverse their diabetes. In this study, we will re-examine the effect of this diet on blood glucose in people with type 2 diabetes. We hypothesize that eating on a starch-based diet improves insulin sensitivity in individuals with type 2 diabetes. A survey of 10 selected type 2 diabetes diagnosed individuals was conducted. Each individual was interviewed and given the option to participate in the study. 7 consented to participate and are put on the starch-based diet for 4 weeks. At the end of each week their blood glucose and other vital readings are to be taken. The participants are given instructions on how to go on the diet. The expected outcome will come from the analysis of the result after the end of 4 weeks on the diet. We expect similar conclusions with that of Dr. McDougal’s findings on the starch-based diet. At this time, it is early to draw conclusions because the instruments required for this project arrived late from the vendors. Therefore, it is appropriate to state that conclusion will be finalized after the end of the four weeks

Role of atomic coordination on superconducting properties of boron-doped amorphous carbon

We study the effect of atomic coordination (orbital hybridization) on superconducting properties of boron-doped amorphous carbon. The ratio of threefold coordinated (sp2-hybridized) and fourfold coordinated (sp3-hybridized) atoms in the system is found to have an impact on their electronic, vibrational, and superconducting properties. Our findings show that a high proportion of fourfold coordination in both carbon and boron atoms is important for realizing a high superconducting transition temperature

Geometrical Well Posed Systems for the Einstein Equations

We show that, given an arbitrary shift, the lapse $N$ can be chosen so that the extrinsic curvature $K$ of the space slices with metric $\overline g$ in arbitrary coordinates of a solution of Einstein's equations satisfies a quasi-linear wave equation. We give a geometric first order symmetric hyperbolic system verified in vacuum by $\overline g$, $K$ and $N$. We show that one can also obtain a quasi-linear wave equation for $K$ by requiring $N$ to satisfy at each time an elliptic equation which fixes the value of the mean extrinsic curvature of the space slices.Comment: 13 pages, latex, no figure

Topics on Hydrodynamic Model of Nucleus-Nucleus Collisions

A survey is given on the applications of hydrodynamic model of nucleus-nucleus collisons, focusing especially on i) the resolution of hydrodynamic equations for arbitrary configurations, by using the smoothed-particle hydrodynamic approach; ii) effects of the event-by-event fluctuation of the initial conditions on the observables; iii) decoupling criteria; iv) analytical solutions; and others.Comment: 30 pages, 29 figures; corrected typo