摘要:
A guide bushing for a tensioning rod in a vertical pulverizer includes a bushing body having a substantially cylindrical interior bushing surface configured and adapted to moveably engage a tensioning rod of a vertical pulverizer. The bushing body is divided circumferentially about the bushing surface into a plurality of sections joined together. The sections are configured and adapted to separate from one another for installation and removal of the bushing body about a tensioning rod of a vertical pulverizer.
摘要:
A guide bushing for a tensioning rod in a vertical pulverizer includes a bushing body having a substantially cylindrical interior bushing surface configured and adapted to moveably engage a tensioning rod of a vertical pulverizer. The bushing body is divided circumferentially about the bushing surface into a plurality of sections joined together. The sections are configured and adapted to separate from one another for installation and removal of the bushing body about a tensioning rod of a vertical pulverizer.
摘要:
A method, non-transitory computer readable medium, and apparatus that generates preorder information identifying a plurality of consumer items to be prepared at designated begin times, based at least in part on historical purchase information. At each of the designated begin times a ticket is generated identifying a consumer item, wherein the consumer item has an associated duration such that the consumer item will be ready at a finished time. Each ticket is provided to a client computing device, wherein the tickets further include at least a remaining amount of time until the identified consumer item reaches the finished time. A request is received from the client computing device to claim one of the consumer items identified by one of the provided tickets. Each of the claimed consumer items is associated with a claimed status. The historical purchase information is updated based on the request.
摘要:
An apparatus is presented in which a sample can be accurately repositioned in a spectroscopic and/or imaging apparatus upon multiple insertions, and where the apparatus can be worn by living subjects for extended periods of time. The apparatus additionally reduces the temperature increase and stabilizes the temperature of the sample upon irradiation with an optical source of excitation. Additionally, the apparatus stabilizes the pressure and critical optical properties of the sample and its interface with the apparatus. Alternatively or additionally, the apparatus can be used to alter and/or substantially reduce fluorescence from targeted fluorophores in the sample.
摘要:
The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes of the present invention can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes of the present invention can also be used as filters and antireflective coatings on optical devices and as down-converting layers. The present invention also provides processes for producing matrixes comprising semiconductor nanocrystals.
摘要:
A coating system and method are described. In some embodiments, a system may include a composition. The composition may include one or more bridged polycyclic compounds. At least one of the bridged polycyclic compounds may include at least two cyclic groups, and at least two of the cyclic groups may include quaternary ammonium moieties. In some embodiments, a method may include applying a coating to a surface of a medical device. The coating may be antimicrobial. A coating may include antimicrobial bridged polycyclic compounds. Bridged polycyclic compounds may include quaternary ammonium compounds. Bridged polycyclic compounds based coating systems may impart self-cleaning properties to a surface.
摘要:
A polarization based optical switch capable of redirecting light signals to a plurality of different output locations. The optical switch utilizes polarization beam splitters to separate each optical channel into multiple polarization portions. Reflection members are used to redirect some of the polarization portions. Polarization rotators are capable of manipulating the plane of polarization of the polarization portions which will determine which of the output locations each optical channel transmits through. Another polarization beam splitter is used to recombine the polarization portions and direct them to one of the output locations depending on their respective planes of polarization.
摘要:
This invention is related to the fields of organic chemistry and nanotechnology. In particular, it relates to materials and methods for the preparation of organic synthons and bridged macrocyclic module compounds. The bridged macrocyclic module compounds may be used to prepare macrocyclic compositions such as nanofilms, which may be useful for filtration.
摘要:
An attachment gusset with ruffled corners and method and machinery for manufacture provides a gusset formed of a continuous strip of material which is pleated at corners or turns in direction of the gusset to form ruffles which are attached to an adjacent layer of material. The ruffled gusset lies substantially flat against adjacent layers of material to which it is attached in a pressed state, and can be expanded to accommodate dimensional structures, such as cushioned pads. The number and spacing of pleats can be adjusted according to the radius of the corners or turns in the gusset. In a method of construction of the gusset, the pleats are formed as the material to which the gusset is attached is turned relative to the sewing point of attachment.
摘要:
A prosthetic retina for implantation in an eye having a defective retina is formed from an array of nanowires having a predetermined spatial distribution, density, size and shape implanted in close proximity to the retina. An electrical conductor is formed at a first end of all nanowires in the array of nanowires and placed in contact with a bias source which biases the array. A plurality of electrodes is located on a second end of each of one nanowire or a bundle of nanowires in the array. Each nanowire produces a photocurrent at a corresponding electrode in response to detection of light impinging on the array of nanowires and the photocurrent stimulates one or more neurons adapted for visual perception. In the preferred embodiment, the predetermined spatial distribution mimics a distribution of rods and cones in a normal eye.