摘要:
The invention provides new methods for synthesis of large boron hydride clusters, e.g., boron hydride molecules of the formula BnHm where 5≦n≦96 and m≦n+8, wherein m and n satisfy the electron counting rules of macropolyhedral boranes. The invention is particularly useful for synthesis of octadecaborane (B18H22). Preferred methods of the invention include iteratively generating a conjugate acid from a salt of the [BaHb]c− or [Bn+2Hm−4]2− anion followed by degradation under conditions conducive to concentrating and drying of the conjugate acid to provide a borane BnHm and residual salt of the [BaHb]c− or [Bn+2Hm−4]2− anion which is reused in the method of synthesis. The invention further provides isotopically enriched boranes, particularly isotopically enriched 10B18H22 and 11B18H22.
摘要:
The invention provides new methods for the synthesis of isotopically enriched metal borohydrides, metal tetrahydroundecaborate salts, and decaborane from isotopically enriched 10B-boric acid or 11B-boric acid. The invention is particularly useful for synthesis of isotopically enriched sodium or lithium borohydride, MB11H14 (where M is Li, Na, K, or alkylammonium), and decaborane.
摘要:
The invention provides new methods for synthesis of ClusterBoron® (B18H22). Preferred methods of the invention include generation of the conjugate acid of B20H182− and degradation of the acid in solution to produce B18H22 in high yields and high purity. The invention further provides isotopically enriched boranes, particularly isotopically enriched 10B18H22 and 11B18H22.
摘要:
The present disclosure provides a femoral cut guide for preparing a distal femur to receive a prosthetic femoral component of a knee implant. The prosthetic femoral component includes a central box. The femoral cut guide replicates the size and shape of the prosthetic femoral component, such that the femoral cut guide may serve as a trial or provisional component used to reduce and test the prepared knee joint before implanting the final prosthetic femoral component. The femoral cut guide includes a detachable box cut guide for preparing the distal femur to receive the central box of the prosthetic femoral component.
摘要:
The invention provides new methods for synthesis of ClusterBoron (B18H22). Preferred methods of the invention include in situ generation of the conjugate acid of B20H182− and degradation of the acid in solution to produce B18H22 in high yields and high purity. The invention further provides isotopically enriched boranes, particularly isotopically enriched 10B)18H22 and 11B18H22.
摘要:
The invention features in-situ cleaning process for an ion source and associated extraction electrodes and similar components of the ion-beam producing system, which chemically removes carbon deposits, increasing service lifetime and performance, without the need to disassemble the system. In particular, an aspect of the invention is directed to an activating, catalytic, or reaction promoting species added to the reactive species to effectively convert the non-volatile molecular residue into a volatile species which can be removed by conventional means.
摘要:
An in situ cleaning system is disclosed for use with semiconductor processing equipment. In accordance with an important aspect of the invention, the cleaning system provides for dynamic cleaning of the semiconductor processing system by varying the pressure of the cleaning gas over time during a cleaning cycle. In particular, the cleaning gas is applied to the semiconductor processing system in repeated pressure cycles. Each pressure cycle begins with the pressure of the cleaning gas at PMIN. The pressure of the cleaning gas is increased to a maximum pressure PMAX during a fill portion of the pressure cycle and maintained for a dwell time selected to allow the available reactants to generate the desired end products. The pressure in the chamber to be cleaned is then reduced during a vent portion of the pressure cycle to permit venting of the reaction products. As such, each time the chamber to be filled is vented and re-filled, reaction products are removed and new reactants are introduced into the chamber to be cleaned, increasing the effective reaction rate.
摘要:
Methods of ordering and manufacturing orthopedic components eliminate the need to stockpile and inventory large volumes of implants and instruments. In one exemplary embodiment, the surgeon begins by acquiring anatomical data from a patient. The anatomical data may then be loaded into a data comparison program. The data comparison program performs a best-fit analysis by comparing the patient's anatomical data to a number of predesigned, tested, and validated virtual implant models that are stored in a database. Once an implant has been identified by the data comparison program for the individual patient, the surgeon may place an order electronically with the manufacturer via the internet. In one exemplary embodiment, when placing the order, the surgeon will specify the type of implant, the surgery date, specific patient information, shipping information, and the preferred surgical technique that the surgeon anticipates using.