摘要:
A tool having a neutron source, a gamma ray detector, and a photomultiplier tube is provided. The gamma ray detector and the photomultiplier tube are at least partially surrounded by a layer of boron. The tool is used to make measurements, and the number of prompt gamma rays emitted by the boron is determined from the measurements. The number of neutrons detected may be inferred using the determined number of prompt gamma rays. The tool may also have a layer of neutron absorbing material different from boron or a layer of heavy metal at least partially surrounding the boron. The tool may be a logging tool used to delineate a porous formation and to determine its porosity. The tool may have a plurality of gamma ray detector/photomultiplier tube pairs and those pairs may be used to determine a formation hydrogen index and/or a borehole hydrogen index.
摘要:
Disclosed is a model-independent method for accurate prediction of formation and borehole properties from neutron capture cross section measurements. A mapping function is constructed which maps the input measurements to the properties of interest. The mapping function is a linear combination of Gauss radial basis functions. The expansion coefficients and widths of the Gaussian functions are determined uniquely using a database populated with representative samples. For a sample not included in the original database, the desired properties can be estimated from the mapping function using the measurements made on the unknown sample.
摘要:
Mollusc processing apparatus and related methods are disclosed. Molluscs are held in holders by one of their shells, illustratively the bottom shells, and are moved between a series of processing stations. At a shell cut station, an opening is cut into one or both of the shells of each mollusc. The next processing station includes a cutting blade to cut the adductor muscle and viscera of each mollusc away from its non-held shell, illustratively the top shell, and a shell detach mechanism to detach the non-held shell from the held shell. One or multiple air blasts are directed toward the viscera to loosen it from the held shell, and at a vacuum station the loosened viscera is pulled from the held shell. A second muscle cut station includes another cutting blade to cut the adductor muscle from the held shell.
摘要:
Systems, methods, and devices for inelastic gamma-ray logging are provided. In one embodiment, such a method includes emitting neutrons into a subterranean formation from a downhole tool to produce inelastic gamma-rays, detecting a portion of the inelastic gamma-rays that scatter back to the downhole tool to obtain an inelastic gamma-ray signal, and determining a property of the subterranean formation based at least in part on the inelastic gamma-ray signal. The inelastic gamma-ray signal may be substantially free of epithermal and thermal neutron capture background.
摘要:
A confluence calendar system and method is provided having a user platform with a user calendar having a number of events of importance to the user. Each of the user events can include date information, location information, and other event detail information. In addition, a serendipity server is provided for generating serendipitous events, based on information received from the user and third parties. The serendipity server sends the serendipitous events to the user for viewing, and for adding the serendipitous event to the user's calendar.
摘要:
The present invention comprises a system and method for presenting large numbers of items on a display screen. According to one aspect of the present invention, information is harvested from a plurality of sites and over a plurality of times and aggregated into a single item set. According to another aspect of the present invention, this information is supplemented by data derived from sorting and classification tasks performed by humans. According to another aspect of present invention, this information is used to derive similarities between items and to derive a heterarchical classification of items into a hierarchical set of categories. According to another aspect of the present invention, one or more series of catalog displays are created which display these items arranged by different criteria and at different scales. According to another aspect of the present invention, these catalog displays are divided into a set of image and data files that can be sent to a client node incrementally during a session. According to another aspect of the present invention, the user may interact with the catalog display to change its scale factor and spatial offset relative to the display surface, to select different catalog displays or portions thereof, and to display additional information. According to another aspect of the present invention, the user may select items for display in a separate area or set of areas that can be manipulated independently of the virtual catalog display. The system and method are particularly useful for assisting users in locating products within a catalog of an online merchant, but may be used in connection with other collections of items.
摘要:
A battery adapter, the battery adapter comprising: a body having a first portion and a second portion, wherein the first portion is configured so as to mechanically and electrically connect to an electrical device, and the second portion is configured so as to mechanically and electrically connect to a battery, wherein the electrical device and the battery are characterized by different form-fit factors; wherein the first portion is electrically connected to the second portion so that a battery connected to the second portion can power an electrical device connected to the first portion. A battery adapter, the battery adapter comprising: a body having a first portion and a second portion, wherein the first portion is configured so as to mechanically and electrically connect to an electrical device, and the second portion is configured so as to mechanically and electrically connect to a battery; wherein the first portion is electrically connected to the second portion so that a battery connected to the second portion can power an electrical device connected to the first portion; and further wherein the battery adapter further comprises the logic circuitry associated with a smart battery, in order that the battery adapter can provide smart battery functionality when the battery comprises a non-smart battery.
摘要:
A chemical agent detector with a a lesser demand sensor, a greater demand sensor, an inlet; and a manifold; and methods associated therewith. The manifold is positioned between the inlet and the sensors, and includes a first intake associated with the lesser demand sensor, a second intake associated with a greater demand sensor, and at least one restrictor. The first intake is placed closer to the inlet than the second intake, and the second intake is isolated from the inlet by at least one restrictor within the manifold. The intakes and restrictor are sized and positioned such that the ratio between: the conductance of the path from the inlet to the greater demand sensor to the conductance of the path between the sensors effectively isolates the lesser demand sensor from the effects of the greater demand sensor.
摘要:
The present invention is directed to frozen biocidal compositions. Specifically, the biocidal compositions comprise a frozen aqueous solution of a plurality of ions selected from the group consisting of halide and oxyhalide ions. The frozen biocidal compositions are useful in preserving or extending the shelf-life of perishable articles.