Stress State Required for Pyramidal Dislocation Movement in Zinc

A tension or compression stress in such a direction that basal slip is minimized can produce second-order pyramidal slip bands in zinc single crystals. The stress required to initiate pyramidal dislocation motion is not sensitive to temperature. However, dislocation velocity at a given stress is sensitive to temperature and the very small dislocation velocity at low temperatures has lead to an erroneous estimate of a ``starting stress'' for pyramidal dislocations. Dislocation velocity at a constant temperature was found to be a function of the magnitude, but not the sense of the resolved shear stress

Twinning and Slip in Zinc by Indentation

Observations of twinning and slip deformation caused by indentation of zinc reveal that extensive slip on the basal and second-order pyramidal systems takes place at loads up to 5 kg. Prismatic punching through 1-cm crystals is observed at indentation loads in excess of about 2.5 kg. It is concluded that the stress at the tip of the twins cannot be obtained by use of an elastic stress analysis

Usury-Applicability of State Usury Laws to Installment Sales

Plaintiff sued a vendor and a finance company to cancel a conditional sales contract and note, for return of payments made, and to obtain an unencumbered certificate of title to a house trailer. The trailer\u27s cash price was 5,000 dollars and plaintiff had paid 1,250 dollars down. Charges of 1,569 dollars were added, making the total time-price 6,569 dollars and leaving a time-balance of 5,319 dollars, payable in sixty monthly installments. The contract and note were immediately assigned to the finance company. Plaintiff based his claim on Nebraska\u27s Installment Loan Act, alleging that the difference between the cash price and the time-price was usurious in exceeding nine percent. Defendants denied that the time-price differential constituted interest within the meaning of the act. On appeal by the finance company from a judgment for plaintiff, held, affirmed, two judges concurring. A time-price differential in an installment sale, computed by applying a schedule of rates to the cash price, constitutes interest subject to the nine-percent limitation of the Installment Loan Act. Lluyd v. Gutgsell, 175 Neb. 775, 124 N.W.2d 198 (1963)

Orientation Dependence of a Dislocation Etch for Zinc

The dislocation etch for (101-[bar]0] surfaces of zinc reported by Brandt, Adams, and Vreeland have been further explored. Additional surface orientations have been found where dislocation etching takes place. These orientations cover an area located between 3 degrees and 12.2 degrees to the [0001], and the area is symmetric about that axis. Attempts to produce dislocation etching on within 2 degrees of (0001) were generally unsuccessful. This is in contrast to etching of many crystals which takes place only within a few degrees of a low index plane

ETHICAL CONCEPTIONS OF THE OGLALA DAKOTA

TABLE OF CONTENTS Introduction ................................ 79 Oglala Dakota Societies ....................... 81 Tokala-Kit Fox ..................................... 85 Kangi Yuha-Crow Owner........ 87 Cante Tinza ........................... 87 Iroka-The Badgers ............................ 89 Sotka Yuha ....................................................... 89 Wiciska-White Marked ................................... 90 Ritualistic Institutions...................................... 93 Sacred Bow Ceremony ........................................................ 93 Sun Dance ............................................................................ 95 Hunka Ceremony .................................................................. 105 Conclusion ................................................................................... 110 List of Books Used or Cited .................................................... 12

Criminal Law-Aiding and Abeiting-Criminal Liablity for Knowingly Furnishing Racing Results to Bookmakers

Appellant, who received a weekly salary for distributing horse-racing results by telephone to some twenty bookmakers, was convicted of aiding and abetting bookmaking activities in violation of section 986 of the New York Penal Law. He admitted knowing that the information would be used by his employer\u27s customers in violation of section 986, but no actual evidence of bookmaking was presented to the court. On appeal, held, reversed, one judge dissenting. Knowingly transmitting racing results to bookmaking establishments by telephone does not, without proof of acceptance of bets on a professional basis, constitute aiding and abetting bookmaking in violation of section 986. People v. Smoke, 38 Misc. 2d 939, 239 N.Y.S.2d 230 (App. T. 1963)

Dislocation velocity on the {1212}<1213> slip systems of zinc

Dislocation velocity on the {1212} slip systems of zinc monocrystals was deduced from the rate of growth of slip bands. Near 77°K dislocation velocity is directly proportional to stress, and screw dislocations move more rapidly than edge dislocations. The difference between edge and screw dislocation velocity can be interpreted in two ways. The pre-exponential factors in a thermal activation model may differ by a factor 4 while the common activation energy is 0.21 eV, or the pre-exponential factors are the same, but the activation energy for edge dislocations (0.22 eV) exceeds that for screws by 5%. Other experiments will be required to establish the appropriate model. The authors favor the second alternative since extra activation energy might be needed to change the core structure of the edge dislocations (which lie on the basal planes) to make them glissile. Near room temperature, dislocation velocity decreases and cross-glide increases with increasing temperature. It is suggested that dragging dipoles and debris caused by their dissociation are responsible for the decrease in dislocation velocity. Finally, it is shown that the temperature dependence of both the yield strength and the plastic modulus is similar to the temperature dependence of the stress required to produce a constant dislocation velocity

Dislocation Velocity on the {1212}〈1213〉Slip System of Zinc

Dislocation velocity on the {1212}〈1213〉slip systems of zinc monocrystals was deduced from the rate of growth of slip bands. Near 77°K dislocation velocity is directly proportional to stress, and screw dislocations move more rapidly than edge dislocations. The pre-exponential factor in a thermal activation model is the same for edge and screw dislocations, but the activation energy for edge dislocations (0.22eV) exceeds that for screws by 5%. It is postulated that the larger activation energy for edge dislocations is due to their dissociation in the basal plane. Near room temperature dislocation velocity decreases and cross-glide increases with increasing temperature. It is suggested that dragging dipoles are responsible for the decrease in dislocation velocity. Finally, it is shown that the temperature dependence of both the yield strength and the plastic modulus is similar to the temperature dependence of the stress required to produce a constant dislocation velocity

The Utilization of Food Elements by Growing Chicks. VII. A Comparison of Corn and Kalo in a Ration for Growing Chicks

1. The effect of replacing 31 per cent of ground corn in a ration by 31 per cent of ground kalo was studied in a growth and body-analysis experiment with two lots of newly hatched chicks. 2. The amounts of feed consumed by all chicks of both lots were kept identical by hand-feeding equal amounts of the pelleted rations daily. 3. There were no significant differences in the growth rate or composition of the chicks at the end of a six weeks\u27 feeding trial