utes to their tendency to form clumps spontaneously. Since the rise of the field of sociobiology, the study of Though the exact relationship between these behaviors the biological basis of social behavior, scientists have is not known, they all appear to be related to food restriven to assign genetic origins for a variety of social sponse in some manner: in the absence of food, clumpbehaviors. ...

I T IS WELL DOCUMENTED that platelet-thrombi are found during some inflammatory processes, but the exact mechanisms involved are still unknown. The authors demonstrated’3 the appearance of platelet-clumping substance in heparinized rabbit plasma and a concomitant decrease in the circulating platelet count after the intravenous injection of high molecular weight substances such as bacterial endo...

A new segmentation method for medical image with intensity clustering is enclosed. In the intended approach, an improved K-means and EM algorithm are combined to develop a hybrid strategy better clumping. The advent aims exploit ability of providing well distributed clump closeness clumps provided by EM. introductory algorithm. This clumping process outcomes in canters which given data. These f...

Of the methods now available for the detection of coagulase positive staphylococei, none is designed to show both clumping factor and free coagulase activity in a single system. The observations reported here are by-products of a search for variant strains of staphylococci with particular reference to strain differences in the cell surface component known as clumping factor or bound coagulase. ...

spatial patterns are useful descriptors of the horizontal structure in a plant population and may change over time as the individual components of the population grow or die out. but, whether this is the case for desert woody annuals is largely unknown. in the present investigation, the variations in spatial patterns of tribulus terrestris during different pulse events in semi-arid area of the ...

OBJECTIVE This observational, retrospective study investigated infertility among Iraqi men who had been long-term prisoners of war. METHODS Routine seminal fluid analyses were undertaken in former prisoners with suspected infertility attending the Ramadi Infertility Clinic, Ramadi, Iraq; semen samples were also microscopically evaluated in these patients. RESULTS In 16 out of 38 patients (...

Animals show impulsiveness when they prefer a smaller more immediate option, even though a larger more delayed option produces a higher intake rate. This impulsive behavior has implications for several behavioral problems including social cooperation. This paper presents two experiments using captive blue jays (Cyanocitta cristata) that consider the effects of payoff accumulation and temporal c...

We present three-dimensional numerical simulations of particle clumping and planetesimal formation in protoplanetary disks with varying amounts of solid material. As centimeter-size pebbles settle to the midplane, turbulence develops through vertical shearing and streaming instabilities. We find that when the pebbleto-gas column density ratio is 0.01, corresponding roughly to solar metallicity,...