IMPACTS OF MAPLE SYRUP GRADING LAWS ON THE MAPLE PRODUCING REGIONS OF UNITED STATES AND CANADA

Agricultural and Food Policy,

Book Reviews

Frost: A Treatise on Guaranty Insurance and compensated Suretyship including therein as subsidiary branches, The Law of Fidelity, Commercial and Judicial Insurance, &c.; Freeman: The American Reports. Containing the Cases of General Value and Authority. Decided int eh Courts of Last Resort of the Several States.;Green: Digest of the Decisions of the Courts of last resort of the several states from 1904 to 1909 contained in the American State Reports, vols. 97 to 120 inclusive, and of the notes to cases reported therein.; the Earl of Halsbury et al.: The Laws of England, Being a Complete Statement of the Whole Law of England; Huddy: the Law of Automobiles (2nd ed.); Gilmore: Cases on the Law of Partnership. Including limited partnerships, Selected form Decisions of English and American Courts; Mechem: Cases on Damages. Selected from Decisions of English and American Courts

Complications of Pulmonary Angiography

Although data are available indicating the complication rates for routine cardiac catheterization, information has been lacking on the morbidity of pulmonary angiography in symptomatic patients. This retrospective study was undertaken to assess the risks of this procedure, by analyzing all cases undergoing pulmonary angiography from June 10, 1964. to December 31, 1967. Only two deaths were considered to be causally related to the pulmonary angiogram, a mortality rate of 1.4%. The overall complication rate was 15%. There was no correlation of the complications with the average age, or the concentration of the Hypaque used. There was a correlation between complications and the mean pulmonary artery pressure, if the pulmonary angiogram was positive. The patients least likely to tolerate the procedure are the patients in whom a definite diagnosis of pulmonary embolism and knowledge of its extent is imperative. Because of this, and because of the difficulty in establishing causal relationship, the relatively high incidence of complications is not considered to be an indictment of this diagnostic procedure

Ionization Potential of the Helium Atom

Ground state ionization potential of the He^4 atom is evaluated to be 5 945 204 221 (42) MHz. Along with lower order contributions, this result includes all effects of the relative orders alpha^4, alpha^3*m_e/m_alpha and alpha^5*ln^2(alpha).Comment: 4 page

Relativistic J-matrix method

The relativistic version of the J-matrix method for a scattering problem on the potential vanishing faster than the Coulomb one is formulated. As in the non-relativistic case it leads to a finite algebraic eigenvalue problem. The derived expression for the tangent of phase shift is simply related to the non-relativistic case formula and gives the latter as a limit case. It is due to the fact that the used basis set satisfies the ``kinetic balance condition''.Comment: 21 pages, RevTeX, accepted for publication in Phys. Rev.

Free vibrations of a plate with varying number of supports

This experimental investigation tested the accuracy of an analysis which predicts the natural frequencies of vibration of a plate constrained by an arbitrary number of point supports along the edges, and also determined the number of such supports which approximates an infinite number

Instability of dilute granular flow on rough slope

We study numerically the stability of granular flow on a rough slope in collisional flow regime in the two-dimension. We examine the density dependence of the flowing behavior in low density region, and demonstrate that the particle collisions stabilize the flow above a certain density in the parameter region where a single particle shows an accelerated behavior. Within this parameter regime, however, the uniform flow is only metastable and is shown to be unstable against clustering when the particle density is not high enough.Comment: 4 pages, 6 figures, submitted to J. Phys. Soc. Jpn.; Fig. 2 replaced; references added; comments added; misprints correcte

Book Reviews

Science of Legal Method. Select Essays by Various Authors. Translation by Ernest Bruncken, Washington, D. C. and Layton B. Register of the University of Pennsylvania Law School. With Introductions by Henry N. Sheldon, Former justice of the Supreme Judicial Court of Massachusetts and by John W. Salmond, Solicitor General of New Zealand. Boston: The Boston Book Company, I917; pp. lxxxvi, 593

Alternative Mathematical Technique to Determine LS Spectral Terms

We presented an alternative computational method for determining the permitted LS spectral terms arising from $l^N$ electronic configurations. This method makes the direct calculation of LS terms possible. Using only basic algebra, we derived our theory from LS-coupling scheme and Pauli exclusion principle. As an application, we have performed the most complete set of calculations to date of the spectral terms arising from $l^N$ electronic configurations, and the representative results were shown. As another application on deducing LS-coupling rules, for two equivalent electrons, we deduced the famous Even Rule; for three equivalent electrons, we derived a new simple rule.Comment: Submitted to Phys. Rev.