Abstract:
A tulip head apparatus includes a chuck housing configured to join to a head of a screw. The chuck housing comprises an upward slot extending from a bottom for enabling the chuck housing to expand to enable entry of the head and to contract to retain the head. A plurality of downward slots extends from a top for enabling a portion of the chuck housing to contract and expand. A plurality of hook structures are disposed about the top. A rotating head includes a hollow portion having a circular groove and to accept the chuck housing in which a contraction of the portion enables entry of the chuck housing and expansion of the portion engages the hook structures with the groove to secure the chuck housing within the rotating head and enable the rotating head to rotate about the chuck housing.
Abstract:
Disclosed herein are systems, methods, and non-transitory computer-readable storage media for simulating propagation of an electromagnetic field, performing phase retrieval, or sampling a band-limited function. A system practicing the method generates transformed data using a discrete Fourier transform which samples a band-limited function f(x) without interpolating or modifying received data associated with the function f(x), wherein an interval between repeated copies in a periodic extension of the function f(x) obtained from the discrete Fourier transform is associated with a sampling ratio Q, defined as a ratio of a sampling frequency to a band-limited frequency, and wherein Q is assigned a value between 1 and 2 such that substantially no aliasing occurs in the transformed data, and retrieves a phase in the received data based on the transformed data, wherein the phase is used as feedback to an optical system.
Abstract:
The present invention provides various processes for fluidizing molecular sieve catalyst compositions in a fluidized bed reaction system. The invention comprises fluidizing a molecular sieve catalyst composition with a reactive fluidizing medium under conditions effective to convert at least a portion of the fluidizing medium to additional product. The invention is ideally suited for implementation into an oxygenate to olefin reaction system, in which the fluidizing medium optionally comprises byproducts of the oxygenate to olefin conversion reaction.
Abstract:
Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1.0. The method produces lower coke yield and provides an olefin product which is low in C1-C4 paraffin content. The invention is particularly effective in producing an olefin product having a very low propane content.
Abstract:
Dynamically verifying handwashing compliance by caregivers may include identifying a generated handwashing communication that indicates a handwashing event time defining a time at which a handwashing event occurred. In response to receiving the generated handwashing communication, a patient visit time that defines a time at which a patient visit occurred may be determined. Determining a patient visit time may include receiving a patient visit communication that is sent in response to a determination that a caregiver computing device is physically proximate to a patient computing device. Based on the received handwashing communication and the determined patient visit time, the patient visit time may be determined as being within a time period threshold of the identified handwashing event time. A statistical analysis of a caregiver associated with the caregiver computing device may then be provided.
Abstract:
A tulip head apparatus comprises a chuck housing configured to join to a head of a screw. Said chuck housing comprises an upward slot extending from a bottom for enabling said chuck housing to expand to enable entry of the head and to contract to retain the head. A plurality of downward slots extends from a top for enabling a portion of the chuck housing to contract and expand. A plurality of hook structures are disposed about said top. A rotating head comprises a hollow portion having a circular groove and to accept said chuck housing in which a contraction of said portion enables entry of said chuck housing and expansion of said portion engages said hook structures with said groove to secure said chuck housing within said rotating head and enable said rotating head to rotate about said chuck housing.
Abstract:
Disclosed herein are systems, methods, and non-transitory computer-readable storage media for simulating propagation of an electromagnetic field, performing phase retrieval, or sampling a band-limited function. A system practicing the method generates transformed data using a discrete Fourier transform which samples a band-limited function f(x) without interpolating or modifying received data associated with the function f(x), wherein an interval between repeated copies in a periodic extension of the function f(x) obtained from the discrete Fourier transform is associated with a sampling ratio Q, defined as a ratio of a sampling frequency to a band-limited frequency, and wherein Q is assigned a value between 1 and 2 such that substantially no aliasing occurs in the transformed data, and retrieves a phase in the received data based on the transformed data, wherein the phase is used as feedback to an optical system.
Abstract:
Methods for accessing a disc space of a patient as a part of an interbody fusion, as well as the tools employed therewith. An exemplary method may include inserting a leading end of an tool into the patient's back at a location on the posterior surface that is laterally offset from a patient's spinous process and disc. The tool's initial entry into the patient may be from a posterior approach. As the tool is advanced along its designated path, it begins to deviate from the posterior approach towards a lateral approach. When the leading end reaches the disc, it may access the disc from a lateral or substantially lateral location. The tool may be used to access the disc location, to remove disc material, to deliver a cutting tool for removing the disc material, and other steps associated with the spinal interbody fusion procedure.
Abstract:
A pedicle screw comprises a head. A shaft is joined to the head. The shaft comprises a first threaded portion, a middle portion and a second threaded portion. The middle portion comprises a modified threaded portion being configured to mitigate damage to a patient's nerve root. A first marker is joinable to the shaft proximate the modified threaded portion. The first marker comprises a material being radiographically distinguishable from the shaft in which a placement of the modified threaded portion is observable.
Abstract:
A pedicle screw comprises a head. A shaft is joined to the head. The shaft comprises a first threaded portion, a middle portion and a second threaded portion. The middle portion comprises a modified threaded portion being configured to mitigate damage to a patient's nerve root. A first marker is joinable to the shaft proximate the modified threaded portion. The first marker comprises a material being radiographically distinguishable from the shaft in which a placement of the modified threaded portion is observable.