Abstract: Ballasted Attachment for Temporary Truss Structures or BATTS are used to support Temporary structures typically built in the live event, trade show, and special event marketplace. BATTS provide a quickly deployed, leveled and stable base for which one can mount aluminum box truss too. This allows tower construction equal to the capacity of the truss itself and a flexible outrigger attachment in which many engineering requirements can be achieved. BATTS provide a ballast point to resist the overturn moment and uplift moment of concert roofs and other system that are exposed to environmental conditions. BATTS are constructed from steel and aluminum and possess substantial self-weight.

Abstract: Ballasted Attachment for Temporary Truss Structures or BATTS are used to support Temporary structures typically built in the live event, trade show, and special event marketplace. BATTS provide a quickly deployed, leveled and stable base for which one can mount aluminum box truss too. This allows tower construction equal to the capacity of the truss itself and a flexible outrigger attachment in which many engineering requirements can be achieved. BATTS provide a ballast point to resist the overturn moment and uplift moment of concert roofs and other system that are exposed to environmental conditions. BATTS are constructed from steel and aluminum and possess substantial self-weight.

Abstract: Various optical apparatus, in particular embodiments, may provide a source of parallel light (7, 75). The parallel light (7, 75) may be generally achieved by directing an incident beam at the apex of a prism (1, 22, 24, 26, 28). The prism may have varying configurations. One configuration has a forward conical face (24). Another configuration has a pyramidal forward end (22). Other configurations are also disclosed. Various optical methods and methods for flow cytometry are also disclosed.

Abstract: Various optical apparatus, in particular embodiments, may provide a source of parallel light (7, 75). The parallel light (7, 75) may be generally achieved by directing an incident beam at the apex of a prism (1, 22, 24, 26, 28). The prism may have varying configurations. One configuration has a forward conical face (24). Another configuration has a pyramidal forward end (22). Other configurations are also disclosed. Various optical methods and methods for flow cytometry are also disclosed.

Abstract: A method and apparatus for monitoring a neutron source are provided, the method comprising: i) providing a plurality of neutron detectors (16) at known positions relative to one another; ii) monitoring the neutron detection rates for the detectors caused by the unknown source(s); iii) proposing a model source location(s) relative to the detectors and an activity level for the model source(s); iv) predicting neutron detection rates for the model source(s); v) comparing the predicted and actual detection rates; vi) adjusting the model source location(s) and/or activity(s) to reduce the difference between the predicted and actual detection rates. The reduced and preferably minimized, difference between the predicted and actual detection rates leads to a model source location(s) and activity(s) which represents an accurate equivalent to the unknown. The location information and/or activity information may be conveyed to the operator of the method.

Abstract: Various optical apparatus provide a source of parallel light (7, 75). The parallel light (7, 75) is generally achieved by directing an incident beam at the apex of a prism (1, 22, 24, 26, 28). The prism may have varying configurations. One configuration has a forward conical face (24). Another configuration has a pyramidal forward end (22). Other configurations are also disclosed. The application also discloses the use of reflectors (20, 78, 216, 316, 400) having internal reflective surfaces shaped as three-dimensional figures of revolution, for example paraboloid or ellipsoid. The reflectors (20, 78, 216, 316) focus light incident onto the reflectors at one or more foci (F, 220, 320, 420). The reflectors may be used in combination with the optical apparatus including the prisms (1, 22, 24, 26, 28). The reflectors (20, 78, 216,316) may be used in flow cytometers for focusing light at a sample stream (237, 337) passing through the focus (F, 220, 320, 420) of the reflector (20, 78, 216, 316).

Abstract: The invention considers the frequency distributions of singles, doubles and triple neutron emission events from a sample under assay. The count rates are equated to mathematical functions related to the spontaneous fission rate, self-induced fission rate, detection efficiency and &agr;,n rate with probability distribution assigned to each of those factors, the value of the product of all the probability distributions being increased to give an optimised solution and so provide a value of the spontaneous fission rate which is linked to the mass of the neutron source. The technique aims to provide increased accuracy and certainty compared with neutron coincidence counting based techniques.