Using Chandra images of cluster cores with clear radio bubbles, we have determined k, which is the ratio of the total particle energy to that of the electrons radiating between 10 MHz and 10 GHz. Radiative and dynamical constraints on the bubbles indicate that the ratio of the energy factor, k, to the volume filling factor, f , lies within the range 1 . k/f . 1000. Assuming pressure equilibrium...

BACKGROUND The aetiology of multiple sclerosis (MS) remains poorly understood. Dental amalgams containing mercury have recently been suggested as a possible risk factor for MS. METHODS In a case-control study conducted between 1991 and 1994, we interviewed a total of 143 MS patients and 128 controls, to obtain information on socio-demographic characteristics and the number of dental amalgams ...

OBJECTIVES To investigate the efficiency of early filling (E) and early diastolic mitral annular velocity (E') ratio (E/E' ratio) assessed by tissue Doppler imaging (TDI) on early detection of diastolic left ventricular (LV) dysfunction in systemic sclerosis (SSc) patients without congestive heart failure (CHF) symptoms. METHODS Thirty-five Korean SSc patients without CHF symptoms and 35 heal...

In the paper we have discussed the proposed water filling algorithm which has been used for allocating the power to the MIMO channels so as to enhance the capacity of the MIMO network. Here we present a theoretical framework for allocating the power here we have considered a 4x4 MIMO system the system is assumed to be MIMO-OFDM and the channel is assumed to be Flat as under this the convolution...

We examined the influence of alterations in preload on pulsed Doppler indexes of left ventricular diastolic function in 50 patients including 12 without cardiovascular disease, 29 with coronary artery disease, and nine with critical aortic stenosis. Micromanometer left ventricular pressure was recorded simultaneously with pulsed Doppler echocardiography of left ventricular inflow and M-mode ech...

OBJECTIVE Neurologic complications during carotid artery stenting (CAS) are usually associated with distal embolic event. These embolic incident during CAS are highly associated with the carotid plaque instability. The current study was undertaken to identify the angiographic characteristics of carotid plaque vulnerability, which was represented as filling defect in the cerebral protection filt...

In resting condition, obese subjects are described as having impaired diastolic filling. To examine the effect of mild to moderate obesity on left ventricular diastolic performance during stress in hypertension, we determined the filling responses to dynamic submaximal exercise in 19 obese hypertensive patients (body mass index, 26 to 30 kg/m2) with a normal left ventricular structure, 19 agean...