Effects of turbulence on plankton: an overview of experimental evidence and some theoretical considerations

OBJECTIVE: To consider explanations for the inconsistent evidence concerning behavioral effects of androgens in women. The following possible explanatory mechanisms are explored: 1 Women vary in their behavioral responsiveness to T. 2 Some reported…

Previous studies have substantiated the antipyretic role played by extrahypothalamic limbic system (EXHY-LS) AVP during fever. Repeated attempts to elucidate other thermoregulatory functions of this hormone have failed. Circumstantial evidence,…

An experimental ecosystem was constructed and used in studies of species coexistence in a patchy environment. This model system consisted of 2 spp. of fungi, Aspergillus nidulans and an unidentified species of Penicillium, competing for space on…

A review of the psychoanalytic literature shows that empathy has always played an important part in the practice of psychoanalysis, but that as a concept it has not been well understood. This confusion and a certain mistrust of empathy that it…

In view of the apparent ambiguity of textural evidence, some theoretical aspects of Ene possibility that growing porphyroblasts deform their matrix are considered. it can be shown by a simple model that a growing grain need not work against the load…

A STELLA model of a simple production organization is used to investigate the effects of different types of coordination on the adaptation of the organization to its changing environment.

Detailed observations of the air flow velocity, pressure and Reynolds stresses above water waves in a wave flume are presented. The static pressure fluctuations induced by the waves are observed following a new procedure that eliminates acoustical…

The effects of acidification and liming on the mobilization of benzo(a)pyrene (BaP) were studied in a long-term column experiment with a sandy topsoil spiked with this hydrophobic compound at a concentration of 100 mg kg-1. Soil acidification to pH…

We examined the effect of bifenthrin, a synthetic pyrethroid insecticide, on gizzard shad (Dorosoma cepedianum) and plankton in an 8-d experiment using 16 outdoor tank mesocosms (5.5 m super(3)). The replicated design included six treatments of…

Form resistance is a dimensionless number expressing how much slower or faster a particle of any form sinks in a fluid medium than the sphere of equivalent volume. Form resistance factors of PVC models of phytoplankton sinking in glycerin were…