The title mol-ecule, C23H20O3, is disordered with a 180° rotation about an axis normal to the length of the mol-ecule, with the major and minor components in a 0.545 (5):0.455 (5) ratio. In the major component, the central benzene ring forms dihedral angles of 72.34 (3) and 69.46 (3)° with the dimethyl-substituted and meth-oxy-substituted benzene rings, respectively. Moreover, the central benze...

To achieve a given motor task a single trajectory must be chosen from the infinite set of possibilities consistent with the task. To investigate such motor planning in a natural environment, we examined the kinematics of reaching movements made around a visual obstacle in three-dimensional space. Within each session, the start and end points of the movement were uniformly varied around the obst...

The first stage in the transition from a coarse structure to a fine structure in many pattern formation problems involves the change of a standard geometric object such as a round disc to a less standard geometric object such as an oval shaped set. On a generic domain two small oval shaped sets are found as solutions to a nonlocal geometric problem. This problem arises as the singular limit of ...

The dynamic geometry of the left ventricle was assessed with the use of chronically implanted pulse-transit ultrasonic dimension transducers. The orientation of the transducers allowed the measurement of left ventricular minor and major axis diameters and equatorial wall thickness in the conscious dog. The left ventricle was modeled as a three-dimensional, prolate ellipsoidal shell. Left ventri...

The crystal structure of the self-complementary DNA octamer d(GGCATGCC) has been determined to a resolution of 2.38 A and R factor of 17.1%. The structure is an A-DNA octamer duplex with Watson-Crick base pairing along its length. This sequence extends the investigation of octamer duplexes of the type d(GGX(4)CC) which assume P6(1) packing within the crystallographic unit cell. The A-DNA duplex...

Recent proper motion studies of stars at the very center of the Galaxy strongly suggest that Sagittarius (Sgr) A ? , the compact nonthermal radio source at the Galactic Center, is a 2.510 6 M black hole. By means of near-simultaneous multi-wavelength Very Long Baseline Array measurements, we determine for the rst time the intrinsic size and shape of Sgr A ? to be 72 R sc (?) by < 20 R sc (?), w...

We present Gemini GMOS longslit spectroscopy of the isolated S0 galaxy NGC 3115. We have determined kinematical data and Lick/IDS absorption line-strength indices for the major axis out to around 9 kpc and for the minor axis out to around 5 kpc (around 2Re). Using stellar population models which include the effects of variable [α/Fe] ratios we derive metallicities, abundance ratios and ages for...

Harmonic analyses of popular music typically take the minor tonic to be Roman numeral “one.” By nature, this “one-based” approach requires a new numbering scheme when songs shift between relative key centers. Recent scholarship has argued, however, that often involves ambiguity tonalities, as exemplified in “Axis” progression, if not sometimes tonal fusion two keys. I thus argue for utility “si...

Many electronic and optical properties of organic thin films depend on the precise morphology of grains. Iron phthalocyanine thin films are grown on sapphire substrates at different temperatures to study the effect of grain growth kinematics and to experimentally quantify the grain size distribution in organic thin films. The grain size is measured with an atomic force microscope and the data i...