1Executive Office of the GCC States for Health Ministers, Riyadh, Saudi Arabia. 2Department of Clinical Pharmacy, College of Pharmacy, Riyadh, Saudi Arabia (Correspondence to S.A. Bawazir: [email protected]). Received: 03/09/03; accepted: 30/11/03 ABSTRACT An important issue in health care today is the cost of essential pharmaceuticals and medical supplies. To control the increase of health c...

When multiple input/multiple output (MIMO) systems were described in the mid-to-late 1990s by Gerard Foschini and others, [1] the astonishing bandwidth efficiency of such techniques seemed to be in violation of the Shannon limit. But, there is no violation because the diversity and signal processing employed with MIMO transforms a point-to-point single channel into multiple parallel or matrix c...

Let us first examine this sequence in the 1-dimensional case. When the underlying manifold is C, the claim is that 0→ Hol→ C∞ ∂ −→ Ω → 0 is exact. Clearly, Hol → C∞ is injective, and we observed last class that Hol is precisely the kernel of the map ∂ : C∞ → Ω0,1, so the only difficulty in verifying exactness is in showing that ∂ : C∞ → Ω0,1 is surjective. That is, given a smooth function g : C...

Voluntary actions typically produce suppression of afferent sensation from the moving body part. We used transcranial magnetic stimulation to delay the output of motor commands from the motor cortex during voluntary movement. We show attenuation of sensation during this delay, in the absence of movement. We conclude that sensory suppression mainly relies on central signals related to the prepar...

1National Malaria Control Programme, Khartoum, Sudan (Correspondence to E.M. Malik: [email protected]). Singa Teaching Hospital, Singar, Sinnar State, Sudan. 3University of Juba, Juba, Sudan. ABSTRACT A cross-sectional study explored the clinical and laboratory aspects of malaria among children presenting with fever to 2 paediatric hospitals in Khartoum state during the low transmission s...

Guiding of relativistically intense (>10(18) W/cm2) laser pulses over more than 10 diffraction lengths has been demonstrated using plasma channels formed by hydrodynamic shock. Pulses up to twice the self-guiding threshold power were guided without aberration by tuning the guide profile. Transmitted spectra and mode images showed the pulse remained in the channel over the entire length. Experim...