We tested the effect of copackaging retroviral vectors of different sizes on retroviral replication and recombination. Our results indicate little or no difference in replication or in the rate or pattern of the strand transfers leading to the formation of recombinant proviruses with size. The size difference of the vectors also allowed us to extend our previous analysis of the linkage of marke...

The effect of salinity on ammonium-assimilation enzymes, as well as on the enzymes of purine catabolism, was studied in root nodules of common bean plants grown in an environmentally controlled chamber. Salt treatments (0, 25, 50 and 100 mM) were applied during the vegetative period, when the symbiosis was well established. Four harvests were made, two during the vegetative and two during the r...

Candida spp. are known to be the most common fungal pathogens isolated from blood cultures of neonates. The present study was undertaken to know the prevalence of candidemia in neonates and their antifungal susceptibility pattern. Candida isolates were speciated by using germ tube, carbohydrate assimilation and fermentation tests, CHROM agar and Dalmau plate culture method. Antifungal susceptib...

Sequential categorization of perceptual stimuli typically shows contrast from one trial to the next. Using familiar categories of animals and faces, contrast effects were dissociated from assimilation effects. Two independent main effects were observed: contrast to the preceding stimulus, and assimilation to the previous response. It is argued that contrast and assimilation may reflect differen...

The relative importance of contrast and assimilation for determining the perceived brightness was estimated. Assimilation decreased when a test spot had such a binocular disparity that the spot and its background appeared on different depth planes respectively. However, contrast was not affected by the binocular depth cue. These results indicate that the cortex takes an important role in assimi...

T paper extends our previous studies on the assimilation of Internet-based e-business innovations by firms in an international setting. Drawing upon theories on the process and contexts of technology diffusion, we develop an integrative model to examine three assimilation stages: initiation→ adoption→ routinization. The model features technological, organizational, and environmental contexts as...

Soil moisture is an important environmental variable that impacts military operations and weapons systems. Accurate and timely forecasts of soil moisture at appropriate spatial scales, therefore, are important for mission planning. We present an application of a \ soil moisture data assimilation system to military trafficability assessment. The data assimilation system combines hillslope-scale ...

Data Assimilation is a methodological framework used in environmental sciences to perform forecasts with complex systems such as meteorological, oceanographic and air quality models. Data Assimilation requires the resolution of a system with three components: one describing the temporal evolution of the state vector, one coupling the observations and the state vector, and one defining the initi...