86,572 research outputs found

    Caratteristiche elettroforetiche delle emoglobine di pecora e capra di razza sarda".

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    The electrophoretic peculiarity of haemoglobin have been studied on 100 sheep and 100 goats of Sardinian-breed. With our technique it has been possible to observe only one type of Hb in sheep (this Hb migrates towards the anode with the same speed of goats' HbB) while four types in goats, two formed by a single band and the other two constituted by two associated bands, respectively indicated as HbA, HbB, HbAB and Hb(AB)1. The results have been discussed in connection with the previous bibliography

    Binding branched and linear DNA structures: From isolated clusters to fully bonded gels

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    The proper design of DNA sequences allows for the formation of well-defined supramolecular units with controlled interactions via a consecution of self-assembling processes. Here, we benefit from the controlled DNA self-assembly to experimentally realize particles with well-defined valence, namely, tetravalent nanostars (A) and bivalent chains (B). We specifically focus on the case in which A particles can only bind to B particles, via appropriately designed sticky-end sequences. Hence AA and BB bonds are not allowed. Such a binary mixture system reproduces with DNA-based particles the physics of poly-functional condensation, with an exquisite control over the bonding process, tuned by the ratio, r, between B and A units and by the temperature, T. We report dynamic light scattering experiments in a window of Ts ranging from 10 degrees C to 55 degrees C and an interval of r around the percolation transition to quantify the decay of the density correlation for the different cases. At low T, when all possible bonds are formed, the system behaves as a fully bonded network, as a percolating gel, and as a cluster fluid depending on the selected r. Published by AIP Publishing

    Lipidi totali e lipoproteine del plasma in ovini alimentati con drupe di Pistacia lentiscus L..

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    Total lipids and plasma lipoproteins in sheep fed with drupes of Pistacia lentiscus L.
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