Abstract:
Multi-layer ceramic capacitors are made from novel low temperature fired ceramic dielectric compositions which may have dielectric constants of over 3200 at room temperature, and which do not vary in value by more than 15 percent over a temperature range of -55.degree. C. to +125.degree. C., with the value at +25.degree. C. being the reference point. The compositions comprise a base ceramic formulation or host material, a ceramic sintering aid, and a low melting point glass formulation, each derived from metal oxides or precursors thereof. The host material is made from 97.89 to 98.19 weight percent barium titanate and from about 1.81 to 2.11 weight percent neodymium oxide, the sintering aid from Bi.sub.2 O.sub.3 .multidot.2TiO.sub.2, and the the glass formulation from 86.0 wt. % PbO, 9.0 wt. % B.sub.2 O.sub.3, 1.58 wt. % SiO.sub.2, 0.13 wt. % TiO.sub.2 and 3.29 wt. % Al.sub.2 O.sub.3. Manganese dioxide or a precursor is added in an amount of about 0.205 wt. % as the dioxide based on the combined weight of the ceramic formulation, the Bi.sub.2 O.sub.3 .multidot.2TiO.sub.2 and the glass formulation. The mixture, when made into a multi-layer capacitor is fired at or below 1100.degree. C.
Abstract translation:多层陶瓷电容器由新型低温烧制陶瓷电介质组合物制成,其在室温下可以具有超过3200的介电常数,并且在-55℃至-55℃的温度范围内其值不会变化超过15% + 125℃,值为+ 25℃为参考点。 组合物包含基础陶瓷制剂或主体材料,陶瓷烧结助剂和低熔点玻璃制剂,各自衍生自金属氧化物或其前体。 主体材料由97.89至98.19重量%的钛酸钡和约1.81至2.11重量百分比的氧化钕,来自Bi 2 O 3 x 2 TiO 2的烧结助剂和86.0重量%的玻璃制剂制成。 %PbO,9.0wt。 %B2O3,1.58wt。 %SiO 2,0.13重量% %TiO 2和3.29重量% %Al2O3。 加入二氧化锰或前体的量为约0.205wt。 基于陶瓷配方,Bi2O3x2TiO2和玻璃配方的组合重量,作为二氧化物。 制成多层电容器时的混合物在1100℃以下烧成。
Abstract:
A multi-layer ceramic capacitor is prepared from a novel ceramic composition produced from the oxides of lead (PbO), iron (Fe.sub.2 O.sub.3), niobium (Nb.sub.2 O.sub.5), nickel (NiO), and tungsten (WO.sub.3), or the synthesized compounds Pb(Fe.sub.1/2 Nb.sub.1/2)O.sub.3, Pb(Fe.sub.2/3 W.sub.1/3)O.sub.3 and Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, together with a small quantity of a Mn(NO.sub.3).sub.2 solution to improve certain electric properties of the capacitor. When used in the correct proportions the oxides disclosed herein are capable of producing monolithic ceramic capacitors having Z5U ratings. In particular, the lead, nickel, niobate compound tends to flatten and to lower the curie peak for the ceramic composition.
Abstract:
A method of altering the targeting and/or cellular uptake efficiency of an adeno-associated virus (AAV) viral vector having a capsid containing an AAV9 cell surface binding domain is described. The method involves modifying a clade F cell surface receptor which comprises a glycan having a terminal sialic acid residue and a penultimate β-galactose residue. The modification may involve retargeting the vector by temporarily functionally ablate AAV9 binding in a subset of cells, thereby redirecting the vector to another subset of cells. Alternatively, the modification may involve increasing cellular update efficiency by treating the cells with a neuraminidase to expose cell surface β-galactose. Also provided are compositions containing the AAV9 vector and a neuraminidase. Also provided is a method for purifying AAV9 using β-galactose linked to solid support. Also provided are mutant vectors which have been modified to alter their targeting specificity, including mutant AAV9 in which the galactose binding domain is mutated and AAV in which an AAV9 galactose binding domain is engineered.
Abstract:
An interconnect assembly includes an optical fiber cable, legs, connectors, and covers. The optical fiber cable includes a jacket and sub-units. The jacket has an interior defining a passage and the sub-units extend through the passage and include optical fibers extending lengthwise through the sub-units. The legs of the interconnect assembly extend from the passage on an end of the jacket, where the legs are continuations of or extensions from the sub-units such that the optical fibers further extend through the legs. The connectors are attached to the optical fibers on distal ends of the legs and the covers are attached to the connectors. The covers each include an end having a track for wrapping one or more of the legs over in order to package the legs and connectors, such as for placement of the legs and connectors within a pulling grip for installation of the interconnect assembly through a duct.
Abstract:
The present invention relates to gene therapy systems designed for the delivery of a therapeutic product to a subject using replication-defective virus composition(s) engineered with a built-in safety mechanism for ablating the therapeutic gene product, either permanently or temporarily, in response to a pharmacological agent—preferably an oral formulation, e.g., a pill. The invention is based, in part, on the applicants' development of an integrated approach, referred to herein as “PITA” (Pharmacologically Induced Transgene Ablation), for ablating a transgene or negatively regulating transgene expression. In this approach, replication-deficient viruses are used to deliver a transgene encoding a therapeutic product (an RNA or a protein) so that it is expressed in the subject, but can be reversibly or irreversibly turned off by administering the pharmacological agent; e.g., by administration of a small molecule that induces expression of an ablator specific for the transgene or its RNA transcript.
Abstract:
Sequences of a serotype 8 adeno-associated virus and vectors and host cells containing these sequences are provided. Also described are methods of using such host cells and vectors in production of rAAV particles.
Abstract:
Novel simian adenovirus 41 and two isolates thereof are described. Various uses of these isolates, including construction of a recombinant vector which comprises simian adenovirus 41 sequences and a heterologous gene under the control of regulatory sequences are provided. A cell line which expresses simian adenovirus 41 gene(s) is also disclosed. Methods of using the vectors and cell lines are provided.
Abstract:
A method for detecting and isolating AAV sequences in a sample of DNA obtained from tissue or cells is provided, which sample contains DNA and proviral AAV. The method involves subjecting the sample containing DNA to amplification via polymerase chain reaction (PCR) using a first set of primers which specifically amplify a first AAV region. The first AAV region is characterized by having at least 250 nucleotides of AAV capsid nucleic acid sequence, a variable sequence flanked by a sequence of at least 18 nucleotides at the 5′ end of the first AAV region and a sequence of at least 18 nucleotides at the 3′ end of the first AAV region. Each of the 5′ and 3′ at least 18 nucleotides is the same over at least 9 consecutive nucleotides relative to corresponding sequences in an alignment of at least two AAV serotypes. Each of the sets of primers consist of a 5′ primer and a 3′ primer. The method is further useful for identifying AAV sequences in the sample by the presence of amplified proviral AAV sequences.
Abstract:
Systems and methods for annotating speech data. The present invention reduces the time required to annotate speech data by selecting utterances for annotation that will be of greatest benefit. A selection module uses speech models, including speech recognition models and spoken language understanding models, to identify utterances that should be annotated based on criteria such as confidence scores generated by the models. These utterances are placed in an annotation list along with a type of annotation to be performed for the utterances and an order in which the annotation should proceed. The utterances in the annotation list can be annotated for speech recognition purposes, spoken language understanding purposes, labeling purposes, etc. The selection module can also select utterances for annotation based on previously annotated speech data and deficiencies in the various models.
Abstract:
A method of testing connectivity through a plurality of dual purpose current mode logic (“CML”) latch circuits connected in a series is provided. Each of the CML latch circuits are operable to latch at least one output signal at a timing in accordance with at least one clock signal and having a mode control device for operating the CML latch circuit as a buffer amplifier when the at least one clock signal is inactive. The method comprises the steps of activating the mode control devices of each of the CML latches to operate each of the CML latches as a buffer; inputting a first signal to a first CML latch of the series; latching an output signal of a second CML latch of the series, the second CML latch being connected at a point in the series downstream from the first CML latch; and determining whether the output signal changes in accordance with a change in the first signal.