We performed a randomized study comparing the haemodynamic effects of three doses of the vasopressor dihydroergotamine (DHE) (5, 10 and 15 microg x kg(-1)) in 30 ASA 1 and 2 patients, aged 53-87 yr, undergoing spinal anaesthesia. Non-invasive systolic arterial pressure (SAP), heart rate and central venous pressure (CVP) were recorded continuously for 25 min. Intravenous fluids were withheld dur...

Microchannel liquid cooling is a promising technique to handling the high temperature problem of threedimensional (3D) processors. There have been a few works which made initial attempts to optimize liquid cooling by utilizing non-uniformly distributed channels, variable flow rate, wider channels, and Dynamic Voltage and Frequency Scaling (DVFS) combined with thread migration mechanisms. Althou...

Earlier experiments have revealed that rats treated with a single dose of chlorphenvinphos (CVP), an irreversible acetylcholinesterase inhibitor, are hyposensitive to amphetamine (AMPH) given three weeks after CVP. Exposure to CVP results in an excess of acetylcholine with subsequent overactivation of the nicotinic as well as muscarinic cholinergic receptors. The purpose of the present experime...

Purpose: Central venous pressure (CVP) is considered to be unsuitable as preload parameter. Stroke volume variation (SVV) has recently been reported to be effective as a preload and fluid responsiveness parameter, and its usefulness for fluid management during living-donor liver transplantation (LDLT). However, use of SVV has not been reported in children. Our aim is to evaluate the use of SVV ...

Abstract The study aimed to explore the correlation of diameter and blood flow velocity internal jugular vein with preoperative volume in elderly patients providence for rapid evaluation ultrasound patients. Thirty over 65 years old were recruited study. Patient’s central venous pressure (CVP) was recorded before anesthesia. maximum (Dmax) minimum (Dmin) left measured by M type respiratory vari...

Abstract Background Mannitol is used extensively in supratentorial surgeries to reduce intracranial pressure. The optimum dose of mannitol still a matter debate. We have done this prospective, comparative and randomized study compare the changes cardiac output (CO), stroke volume (SV), index (CI), central venous pressure (CVP), brain relaxation, side effects two doses infusion. divided 60 enrol...

This paper shows the problem of nding the closest vector in an n-dimensional lattice to be NP-hard to approximate to within factor n c= log log n for some constant c > 0.

Above we have used the fact that dist(t,L) = minv∈L‖t − v‖ = minx∈t+L‖x‖, because L = −L. The two versions of CVP are equivalent by associating each v ∈ L with t − v ∈ t + L, and vice versa. Although the former version of the problem is the more “obvious” formulation, the latter version is often more convenient in algorithmic settings, so we will use it throughout these notes. We first show tha...

In Crypto 1997, Goldreich, Goldwasser and Halevi (GGH) proposed a lattice analogue of McEliece public key cryptosystem, which security is related to the hardness of approximating the closest vector problem (CVP) in a lattice. Furthermore, they also described how to use the same principle of their encryption scheme to provide a signature scheme. Practically, this cryptosystem uses the euclidean ...