We used PET to explore the neurophysiological changes that accompany cognitive disability in ageing, with a focus on the frontal lobe. Absolute regional cerebral blood flow (rCBF) was measured in 41 healthy volunteers, evenly distributed across an age range of 18-80 years, during two task paradigms: (i) the Wisconsin Card Sorting Test (WCST), which depends heavily on working memory and is parti...

The Grasso RC12, introduced early 1996, belongs to the largest reciprocating compressors in industrial refrigeration. The high-speed variant, the RC12E, has been introduced in Europe by the end of 1997: the ammonia variant runs at 1500 rpm, whilst the halocarbon variant has a maximum speed of 1200 rpm. The design philosophy will be illustrated focusing on the valve design. The compressor housin...

Submit Manuscript | http://medcraveonline.com While there is risk of infection to the mother and the fetus, this risk is not as important as when the RPM takes place before the term. Usually, between 70% and 80% of the patients at term with RPM spontaneously initiate labour within the subsequent 24 hours and those that did not begin spontaneously,the induction of labor is indicated within 12 ho...

BACKGROUND Echocardiographic ramp tests have been widely used to help guide speed adjustments and for identification of potential device malfunctions in patients with axial continuous-flow left ventricular assist devices (LVADs) (Heartmate II LVAD [HMII]). Recently, the use of centrifugal-flow LVADs (Heartware LVAD [HVAD]) has been on the rise. The purpose of this study was to evaluate the util...

Materials and methods CHO-DG44 cells were cultivated in suspension in 1-L bottles as described in [1]. To determine conditions under which the shear stress was harmful for the cells, the bottles were orbitally shaken on an ES-X platform (Kühner AG, Birsfelden, Switzerland) at agitation rates from 150 to 200 rpm for 24 h. Control cultures were run in parallel with agitation at 110 rpm. The veloc...

Objectives of this study were to quantify production responses of lactating dairy cows to supplying absorbable Met as isopropyl-2-hydroxy-4-(methylthio)-butanoic acid (HMBi), or rumen-protected Met (RPM, Smartamine M; Adisseo, Alpharetta, GA) fed with or without 2-hydroxy-4-(methylthio)-butanoic acid (HMB), and to determine whether Met supplementation will allow the feeding of reduced dietary c...

Submit Manuscript | http://medcraveonline.com While there is risk of infection to the mother and the fetus, this risk is not as important as when the RPM takes place before the term. Usually, between 70% and 80% of the patients at term with RPM spontaneously initiate labour within the subsequent 24 hours and those that did not begin spontaneously,the induction of labor is indicated within 12 ho...

In multiprocessor systems, processing nodes contain a processor, some cache and a share of the system memory, and are connected through a scalable interconnect. The system memory partitions may be shared (shared-memory systems) or disjoint (messagepassing systems). Within each class of systems many architectural variations are possible. Fair comparisons among systems are difficult because of th...