When, in 1784, the land surveyor Thomas Jefferson called into being the states of the so-called Northwest Ordinance by drawing lines on a map, his map was sufficiently inaccurate that it did not even have the Great Lakes in the right places. Ten states would nonetheless eventually be created in the area of Jefferson’s map, having boundaries which in large degree follow his original lines. These...

describe a reduction in hospitalizations for acute myocardial infarction in Pueblo, Colo, after the implementation of a city-wide smoking ordinance. The ordinance, which was strictly enforced, prohibited smoking in all workplaces, including bars and restaurants, and in all buildings open to the public. The findings in Pueblo confirm a similar assessment of the consequences of a public smoking b...

There is legal uncertainty as to whether selective foeticide is authorised under section 47A of the Offences Against the Person Ordinance (1967). Medical and legal issues surrounding a case of selective foeticide in a triplet pregnancy are reported.

The process of e+e− annihilation into a π+π− pair with radiation of a photon is considered. The amplitude of the reaction e+e− → π+π−γ consists of the model independent initial-state radiation (ISR) and model dependent final-state radiation (FSR). The general structure of the FSR tensor is constructed from Lorentz covariance, gauge invariance and discrete symmetries in terms of the three invari...

high intensity optical radiation can cause damage to the eye and intense radiation in the range of 770-1400 nm can cause thermal retinal damage. in the workplaces where there are high temperature sources, the workers in front of these hot  sources without bright light maybe exposed to the  intense ir radiation, thus regular measurement of these radiations seems crucial. measurement of ir radiat...

Using Hong Kong’s mental health legislation as a case study, this article asks whether provisions in domestic legal frameworks which seek to restrict the institution of proceedings against those working under such may be justified, given implications they have on fundamental right access justice. Under section 69 Kong Mental Health Ordinance, cannot brought anyone acting pursuance Ordinance unl...

This paper is focused on the application of hybrid Single relaxation time lattice Boltzmann and finite volume methods in conjunction with discrete ordinates method to simulate coupled natural convection and volumetric radiation in differentially heated enclosure, filled with an absorbing, emitting and non-scattering gray medium. In this work, the velocity and temperature fields are calculated u...

tac (time to amplitude convertor) is one of the most important time measurement instrumentswhich has great significance in many fields of science, especially radiation physics. a tac unit has beendesigned based on the start-stop analog method and nim (nuclear instrument modules) standards. afterdesigning the circuit, it was simulated by pspice software and constructed by discrete and integrated...