From Hispania to the Chalkidiki: A Detailed Study of Transport Amphorae from the Macquarie University Museum of Ancient Cultures

This study considers a collection of four diverse amphorae recently acquired by the Macquarie University Museum of Ancient Cultures. Upon commencing, these ceramic vessels bore no information regarding distribution or contents and were largely unanalyzed and unpublished. This paper seeks to determine what they can reveal through a detailed study of their origins, provenance, principal contents, and potential distribution. It is hoped that this information will aid in the analysis of larger trade networks for these amphora types along with their role in the economies of the ancient Mediterranean

Isoimmunization in the human subject to the blood group factors A, B and Rh

The process by which specific antibodies are formed in an individual in response to stimulation by an antigen is called immunization. An antigen which is contained in some individuals of a species may, under suitable conditions, stimulate the production of specific antibodies when injected into other individuals of the same species who do not already possess the antigen. This process is called iso-immuhization and the antibodies produced are iso-antibodies. The first experiments on this subject were made on animals (6) by Ehrlich and Morgenroth who discovered that when one goat was iniected with the blood of another goat, immune iso-haemolysins(8)became apparent in its serum. in 1933 Irwin and Hill madeuse of the phenomenon of iso-immunization for the purpose of studying the cellular individuality of erythrocytes in doves. Back cross-hybrids were joined by parabiosis and it was found that each member of a pair of parabiotic twins developed antibodies against the erythrocytes of the other, due to mutual (3)iso-immunization. Dienst first suggested that there might be Iso-immunization within the human species. He showed that following pregnancy in some cases there was an increase in the Anti-A or anti-B iso-agglutinin titre of the mother's serum when the infant's erythrocytes contained a corresponding, A or B agglutinogen.<p

The Effects Of Acidic Conditions And Tannins On The Survival, Development, And Behavior Of Cope’s Gray Treefrog (Hyla Chrysoscelis)

As amphibians decline around the world, freshwater acidification resulting from pollutants and acid rain may be a contributor. The ability of organisms to cope with environmental changes is greatly mediated by behavior, and recent studies indicate that anthropogenic acidification impairs behavioral responses by impacting olfactory abilities of aquatic organisms. Responding appropriately to novel stimuli is important for individual performance and survival, and pollutants may cause organisms to behave maladaptively. In this study I sought to: a) determine whether the oviposition site choices of adult female frogs correspond with the pH and tannin conditions that maximize tadpole survival and performance in the laboratory, and b) investigate the impacts of mildly acidic conditions, with and without the added stress of tannins, on the survival, development, and anti-predator behavior of Hyla chrysoscelis tadpoles. I conducted a field oviposition study to determine adult female site choice, and reared tadpoles in acidic and tannic conditions to investigate survival and antipredator behaviors. I found that female oviposition site choice did not correspond with conditions that maximize offspring survival. Tadpole mortality was highest in tannic treatments, yet tannic treatments received a high proportion of eggs in the oviposition experiment. Trends in tadpole antipredator behaviors suggested that mildly acidic conditions impaired predator recognition, though this was not statistically significant. My results suggest that tannic conditions reduce tadpole fitness, yet adult females appear to respond maladaptively to elevated tannins by failing to avoid tannic treatments when ovipositing

On the chemical composition of L-chondrites

Radiochemical neutron activation analysis of Ag, As, Au, Bi, Co, Cs, Ga, In, Rb, Sb, Te, Tl, and Zn and major element data in 14 L4-6 and 3 LL5 chondrites indicates that the L group is unusually variable and may represent at least 2 subgroups differing in formation history. Chemical trends in the S/Fe rich subgroup support textural evidence indicating late loss of a shock formed Fe-Ni-S melt; the S/Fe poor subgroup seemingly reflects nebular fractionation only. Highly mobile In and Zn apparently reflect shock induced loss from L chondrites. However, contrasting chemical trends in several L chondrite sample sets indicate that these meteorites constitute a more irregular sampling of, or more heterogeneous parent material than do carbonaceous or enstatite chondrites. Data for 15 chondrites suggest higher formation temperatures and/or degrees of shock than for LL5 chondrites

The Stroboscopic Effect

Consider a straight row of equally spaced white dots on a black belt running at a constant velocity v over two pulleys. Let the dot spacing be D0. Suppose that the belt is in a darkened room so that even when the belt is at rest the dots are invisible. Let the moving belt be periodically illuminated by some source of intermittent and approximately instantaneous illumination of constant frequency B

Erosion Control in Ohio Farming

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A Curve of Moisture Condensation on Glass Wool

Experimental results of Professor F. T. Trouton relating to equilibrium vapor pressure and total mass of water vapor fed to glass wool that had previously been thoroughly dried, showed an interesting drop in the curve at about half saturation pressure. The character of the curve appeared to afford grounds for a theory, proposed by Trouton, which supposed the condensation to have taken place in two modes, or states, which he called the alpha and the beta states. After thorough drying, employing the three agencies of continued vacuum, phosphorus pentoxide, and a temperature of about 160°, moisture in the alpha state was supposed to condense on the dried surface first. The alpha condensation required relatively only a small amount of water