Neural activity in the brain is followed by localized changes in blood flow and volume. We address the relative change in volume for arteriole vs. venous blood within primary vibrissa cortex of awake, head-fixed mice. Two-photon laser-scanning microscopy was used to measure spontaneous and sensory evoked changes in flow and volume at the level of single vessels. We find that arterioles exhibit ...

We demonstrated that large amounts of blood shift from the forearm veins during hyperventilation (2). If this effect were generalized in the periphery of the body the volume of blood in the central venous reservoir might increase. An increase in pressure in the central veins would be evidence to support this suggestion. The fall in peripheral venous pressure which occurs during hyperventilation...

Enhanced oil recovery (EOR) has been identified as a method of sequestering CO(2) recovered from power plants. In CO(2)-flood EOR, CO(2) is injected into an oil reservoir to reduce oil viscosity, reduce interfacial tension, and cause oil swelling which improves oil recovery. Previous studies suggest that substantial amounts of CO(2) from power plants could be sequestered in EOR projects, thus r...

Shale reserves have become an ever-increasing component of the world’s energy map. The optimal design multi-well multi-stage fracturing (MMF) treatments is essential to economic development such resources. However, optimizing MMF a complex process. It requires geomechanical simulation, reservoir and automatic optimization. In this work, integrated workflow proposed optimize in unconventional re...

Phrynops geoffroanus is a testudine of the family Chelidae that has wide distribution. However, there are gaps in knowledge its biology. This study aimed to characterize demographically and morphometrically population an ephemeral water reservoir semi-arid area Paraíba, period from April 2016 March 2017. The individuals were captured manually by hoop-net trap. Data on size distribution describe...

During the Surface Heat Budget of the Arctic Ocean (SHEBA) project in October 1997 the first measurements of 7Be ever made within the Arctic Ocean were used to reconstruct he evolution of the mixed layer over the previous season and confirmed that the reservoir of heat beneath the fall mixed layer was emplaced in the summer, rather than input cumulatively over several seasons or advected in fro...

Foodborne infections are an important Public Health concern worldwide. Most of the pathogens that play a role in foodborne diseases have a zoonotic origin. The epidemiology of foodborne infections as well as the food production and distribution chains, have remarkably changed during the past ten years. Understanding of how pathogens arrive, persist in animal reservoir or enter the food chain is...

Shale gas resources are abundantly distributed with low porosity and permeability. Horizontal well and fracturing are prior considerations. Fracturing is a widely-used technology to enhance gas production. In this paper, the author (a) investigated the present stimulation of Barnett and Haynesvile gas fields (Fig. 1) in America, Sichuan basin (Fig. 2) in China and Cooper basin (Fig. 3) in Austr...

The adults and immature stages of Paratanytarsus corbii sp. n. and the male adult of Paratanytarsus silentii sp. n. are described and illustrated. P. corbii larvae were collected on sediment and aquatic vegetation of the headwater of the Anhumas Reservoir (Américo Brasiliense, SP) and reared in laboratory to obtain the pupal exuviae and associated adults. The adult males of P. silentii were obt...

Oil production optimisation involves the determination of optimum well controls (well pressures, injection rates) to maximise an objective function such as net present value. These problems typically include physical and economic restrictions, which introduce general constraints into the optimisations. Cost function and constraint evaluations entail calls to a reservoir flow simulator. In many ...