Lack of fundamental information on the factors determining the survival of fish in water containing poisonous substances has led to the use of a variety of experimental techniques and methods of interpreting results in studies on the toxicity to fish of constituents of waste waters discharged to streams; information on the survival times of fish in solutions where they survive for longer than o...

We investigated lubricants and thin teflon foils that can be applied in the formability testing of aluminum sheets used electronics automotive industries. For tests, thirteen different industrial (oils greases) (i.e., L1–L13) two Teflon films 0.08 0.22 mm thick) were applied. The authors conducted an Erichsen test, thickness reduction discs was measured first. In forming-limit curve (FLC) it is...

Abstract Austenitic Cr–Ni stainless-type 301LN steel was subjected to a double-reversion annealing (DRA) treatment develop bulk grain-refined microstructures. The tensile properties and formability of the DRA structures were determined by high-speed Erichsen cupping tests at strain rate 1.5 s ?1 (50 mm ) compared with those coarse-grained steel. Detailed microstructural features characterized u...

We discuss the existence of a pooling equilibrium in a two-period model of an insurance market with asymmetric information. We solve the model numerically. We pay particular attention to the reasons for non-existence in cases where no pooling equilibrium exists. In addition to the phenomenon of cream skimming emphasized in earlier literature, we here point to the the importance of the opposite:...

The derangements of cardiac rhythm that result from occlusion of coronary arteries caught the attention of the earliest experimenters in the field. By the time of the studies of Porter in 1894, it was known that "fibrillar contractions" often were the end result of coronary occlusion and that irregularities of cardiac rhythm commonly preceded terminal ventricular fibrillation. Porter remarked t...

CojirouND dislocation of the knee-joint is an accident which is SO very rare tliat every instance is worthy of narration. It is one of the most formidable injuries to which the lower extremities are liable. The terrible laceration of the soft parts, with extensive extravasation of blood ana the protrusion of the condyles of the femur through a large external wound, imperatively demand amputatio...