摘要:
Described here is a method for performing phase contrast imaging using an array of independently controllable x-ray sources. The array of x-ray sources can be controlled to produce a distinct spatial pattern of x-ray radiation and thus can be used to encode phase contrast signals without the need for a coded aperture. The lack of coded aperture increases the flexibility of the imaging method. For instance, because a fixed, coded aperture is not required, the angular resolution of the imaging technique can be increased as compared to coded-aperture imaging. Moreover, the lack of a radioopaque coded aperture increases the photon flux that reaches the subject, thereby increasing the attainable signal-to-noise ratio.
摘要:
Systems, apparatuses and methods for enabling a group of people to share the cost of an event, such as a meal, the purchase of a gift, or the rental of a car. Embodiments of the invention provide the tools needed to enable a group to participate in a shared event or activity, where one of the participants pays for the event or activity using their payment device and the other members of the group pay their portion of the cost to the participant who made the payment. Embodiments of the invention provide an ecosystem where a person can pay for an event, goods, or services using a single payment device (such as a credit or debit card) and then settle the amounts owed to them by other members of a group using the tools provided by the invention.
摘要:
An x-ray source for use in Phase Contrast Imaging is disclosed. In particular, the x-ray source includes a cathode array of individually controlled field-emission electron guns. The field emission guns include very small diameter tips capable of producing a narrow beam of electrons. Beams emitted from the cathode array are accelerated through an acceleration cavity and are directed to a transmission type anode, impinging on the anode to create a small spot size, typically less than five micrometers. The individually controllable electron guns can be selectively activated in patterns, which can be advantageously used in Phase Contrast Imaging.
摘要:
A computer implemented method and system for managing recruitment interactions provides a recruitment interaction management platform (RIMP) that acquires profile information associated with multiple roles from multiple users and recruitment advisory information from one or more of the users and/or first external sources via a network, for creating one or more candidate profiles for candidates. The RIMP matches the candidate profiles with a recruiting requirement acquired from one or more of the users or second external sources via the network, based on matching criteria to generate a candidate list that matches the recruiting requirement; dynamically assigns a rating to each of the users based on their roles, the profile information, an outcome of a transaction performed between recruiters and the candidates, and predetermined rating criteria associated with the roles; and allocates incentives to each of the users based on the roles, the assigned rating, and predetermined incentive allocation criteria.
摘要:
Systems, apparatuses and methods for enabling a group of people to share the cost of an event, such as a meal, the purchase of a gift, or the rental of a car. Embodiments of the invention provide the tools needed to enable a group to participate in a shared event or activity, where one of the participants pays for the event or activity using their payment device and the other members of the group pay their portion of the cost to the participant who made the payment. Embodiments of the invention provide an ecosystem where a person can pay for an event, goods, or services using a single payment device (such as a credit or debit card) and then settle the amounts owed to them by other members of a group using the tools provided by the invention.
摘要:
A bundle of drawn fibers that have X-ray scintillating unagglommerated nanocrystallite particles in plastic or glass cores of down to 0.1 micron spacing and claddings of X-ray absorbing compounds in the cladding composition. Optional is a cover to the bundle that blocks light from leaving the bundle at the X-ray side while allowing X-rays to pass into the cores. To image the light exiting the fiber bundle at the sub-micron level, light expansion is preferable using either a lens system or a fiber bundle expander.
摘要:
An apparatus for inoculating and streaking a solid growth culture medium in a plate, the streaking using a streaking applicator having a line of resiliently and flexibly supported spaced apart contact surfaces, the apparatus including: (a) an inoculating and streaking station including: a plate work position having a notional action line fixed in two dimensions (x,y) in a predetermined position; and a plate rotation device for rotating a positioned plate to cause streaking; (b) a sensor capable of locating the surface of the medium in a positioned plate to thereby determine for that plate, prior to inoculation and streaking of that plate, the third dimension (z) of the action line; (c) an inoculating device capable of dispensing inoculum, along the action line, on the surface of the medium in the positioned plate; and (d) a streaking device capable of moving the streaking applicator such that its line of spaced apart contact surfaces contacts, along the action line, the surface of the medium in the positioned plate, prior to rotation of the positioned plate for streaking.
摘要:
A cartridge for holding and dispensing streaking applicators for an automated streaking apparatus having a cartridge holder, the cartridge including: a case with a dispensing end, a longitudinal axis and an elongate slot generally parallel to the longitudinal axis, the dispensing end including an applicator dispensing position where one applicator can be at least partially accessible from outside the case; and an applicator support member constrained within the case for longitudinal movement therein and being able to carry a stack of applicators; the elongate slot being capable of operatively receiving a biasing member when the cartridge is in the cartridge holder to urge the support member towards the dispensing end and an applicator into the dispensing position.
摘要:
A reducing agent metering system for delivering reducing agent to a lean burn internal combustion engine. The reducing agent metering system includes a metering system housing, a system for metering vaporized reducing agent to the internal combustion engine, the system positioned within the metering system housing and a system for delivering an atomized stream of liquid reducing agent to the lean burn internal combustion engine, the system positioned within the metering system housing, wherein the reducing agent metering system is operable to transition from metering vaporized reducing agent to delivering an atomized stream of liquid reducing agent to the lean burn internal combustion engine.
摘要:
Methods, systems and machine readable media are disclosed for performing dynamic information flow tracking. One method includes executing operations of a program with a main thread, and tracking the main thread's execution of the operations of the program with a tracking thread. The method further includes updating, with the tracking thread, a taint value associated with the value of the main thread to reflect whether the value is tainted, and determining, with the tracking thread based upon the taint value, whether use of the value by the main thread violates a specific security policy.