background:oral cavity provides variety of surfaces for bacterial attachment and colonization. these bacteria can enter the circulatory system of the human body and become pathogenic. thus chronic oral inflammations are regarded as a potent risk factor for systemic pathologies. according to literature classic risk factors only can explain half to two thirds of cardiovascular diseases and is bel...

We study the possibility of observing an ‘invisible’ Higgs boson in central exclusive diffractive production at the LHC. We evaluate the cross section using, as a simple example, the Standard Model with a heavy fourth generation, where the invisible decay mode H → ν4ν̄4 dominates, with the heavy neutrino mass M(ν4) ≃ 50 GeV. We discuss the possible requirements on trigger conditions and the back...

The decays D → V l + l − present in principle the opportunity to observe the short distance FCNC transition c → ul + l − , which is sensitive to the physics beyond the Standard Model. We analyze the D → V l + l − decays within the Standard Model, where in addition to the short distance dynamics also the long distance dynamics is present. The short distance contribution due to c → ul + l − trans...

1 I n t r o d u c t i o n The problem we address in this paper is that of a machine vision system with two cameras, sometimes called a stereo rig, to which no thro~-dimensional metric information has been made available. The only information at hand is contained in the two images. We assume that this machine vision system is capable, by comparing these two images, of establishing correspondence...

War on terrorism, as the motto which formed the cornerstone of global policies of former     neo-conservative administration of the United States, is increasingly becoming ineffective in Afghanistan with the dreaded consequence of spilling over into Pakistan. This inevitable consequence of War on    Terrorism in Afghanistan has brought the West face to face with the ‘nest of terrorism’ that CIA...