The autodetachment spectrum of acetaldehyde enolate anion, CH,CHO-, is recorded near 14180 cm-’ using a coaxial laserion threshold photodetachment spectrometer. The spectrum represents transitions from u= 1 in the v) C-C-O bending mode of CH,CHOto u=O m the autodetaching dipole-bound state of the anion. The 32 rotationally resolved (0, 1) hot band transitions reported here were fit to Watson’s ...

CORRECTED transposition is commonly considered to be the resuilt of a leftward l)ending of the bulboventricular loop instead of a rightward bending, with concomitantly abnormal development of the trtuncuis septum.'-3 Recently an embryologic study was carried out by one of u-s of normal eight to 19 somites hulman embryos (Streeter's age groups horizon X and XI) and a 6.6-mm. human embryo with an...

Transposons are ubiquitous genetic elements that drive genome rearrangements, evolution, and the spread of infectious disease and drug-resistance. Many transposons, such as Mu, Tn7, and IS21, require regulatory AAA+ ATPases for function. We use X-ray crystallography and cryo-electron microscopy to show that the ATPase subunit of IS21, IstB, assembles into a clamshell-shaped decamer that sandwic...

In order to identify physical model parameters of a high-rise building, a new story stiffness identification method is presented based on a shear-bending model and the identification function. Although a shear building model may be the simplest conventional model for representing tall buildings, the system identification (SI) method using that model is not necessarily appropriate. This is becau...

and objectives In tutorial 2, we demonstrated the basic steps for deriving the direct boundary integral equation. In this tutorial we will explain, with more examples, the derivation of the direct boundary integral equation for systems of partial differential equations. We will consider two examples: elasticity problems and shear-deformable plate bending problems. 1 Elasticity equations In this...