Hester, Thomas R. 1973 Chronological ordering of Great Basin prehistory. University of California Archaeological Research Facility, Contributions 17:17-18. Johnson, L., Jr. 1969 Obsidian hydration rate for the Klamath Basin of California and Oregon. Science 1965:1354-56. Katsui, Yoshio, and Tuko Kondo 1964 Dating of stone implements by using hydration layer of obsidian. Department of Geology an...

Abstract—Excavation and retaining walls are of challenging issues in civil engineering. In this study, the behavior of one important type of supporting systems called Contiguous Bored Pile (CBP) retaining wall is investigated using a physical model. Besides, a comparison is made between two modes of free end piles (soft bed) and fixed end piles (stiff bed). Also a back calculation of effective ...

Today students grow up in an environment that strongly differs about tools and experiences from those of previous generations. This environment is characterized by ubiquitous technologies and very tight loops of interaction and reward. However, educational techniques are anchored in the features of previous generations, causing an increasing lack of learning effectiveness in students. The NUCLE...

An absolute value function was introduced for chaos construction, where hyperchaotic oscillation found with amplitude rescaling. The nonlinear term brings the convenience control. Two regimes of control including total and partial are discussed, attractor can be rescaled separately by two independent coefficients. Symmetrical pairs coexisting attractors captured corresponding initial conditions...

In this report, centered on the activities within the MURST-PRIN project “Fisica teorica del nucleo e dei sistemi a più corpi” we discuss recent advances on the following items: i)neutrinos as probes of the solar interior and of other astrophysical objects; ii)neutrinos as probes of physics beyond the Standard Model of electroweak interactions; iii)the role of nuclear physics in i) and ii); iv)...

8-Aza-Hr,2 synthesized initially by Davoll (12), has antitu mon activity in experimental systems and differs in its me tabolism from such closely related compounds as inosine and 6-thioinosine (10). In a preliminary study of the metabo lism of [3H]-8-aza-HR, we found conversion to phosphates of 8-aza-AR (2). Although 8-aza-AR was synthesized some years ago (12), little is known about its metabo...

Recent observations on Type-Ia supernovae and low density (Ωm = 0.3) measurement of matter including dark matter suggest that the presentday universe consists mainly of repulsive-gravity type ‘exotic matter’ with negative-pressure often said ‘dark energy’ (Ωx = 0.7). But the nature of dark energy is mysterious and its puzzling questions, such as why, how, where and when about the dark energy, a...

Quantum chemical studies using the accurate CASPT2//CASSCF procedure show that π-stacked interactions in biochromophores such as pyrimidine (Pyr) DNA/RNA nucleo bases pairs yield excimer-like situations which behave as precursors of processes like charge transfer (CT) or photoreactivity and are the source of the emissive properties in DNA. Examples are the CT between adjacent DNA nucleobases in...

Three types of investigations are described. (a) When a polymer chain carries reactive substituents, the reaction rate may be increased by very large factors if these groups are sufficiently close to each other. More distant groups interact at rates governed by the chain flexibility. A technique is described for studying the effect of the excluded volume on the probability of cyclic chain confo...