583 research outputs found
Is Something Amiss? A Commentary on the Aftermath of Phillips v. AWH Corp.
In Phillips v. AWH Corp., decided en banc in July of 2005, the Federal Circuit held that dictionaries or other similar sources may be used to assist a construing court in its quest to interpret the claim language, but must take an inferior role to the meanings of claim terms as they would be understood by one of ordinary skill in the art in view of the intrinsic evidence. The court further noted that the usage of a term in the specification is the single best guide to the meaning of [a] disputed term. This decision reversed the court\u27s opinion in Texas Digital Inc. v. Telegenix, Inc. (2002) where the court had held that dictionaries and the like are particularly useful resources to assist the court in determining the ordinary and customary meanings of claim terms, and should be consulted before referencing the specification and prosecution history in an attempt to prevent limitations from being read into the claims. In rejecting this approach, the Phillips court stated that, If the District Court starts with the broad dictionary definition in every case and fails to fully appreciate how the specification implicitly limits definition, the error will systematically cause the construction of the claim to be unduly expansive.
The articleâs topic considers the aftermath of Phillips. The Federal Circuit has already revisited this issue several times since July 2005, and it is drawing much attention from practitioners. One of the main purposes of my article is to profile these post-Phillips cases and their effects. The article also introduces several considerations for the patent prosecutor in the aftermath of Phillips
110GHz fT Silicon Bipolar Transistors Implemented using Fluorine Implantation for Boron Diffusion Suppression
This paper investigates how fluorine implantation can be used to suppress boron diffusion in the base of a double polysilicon silicon bipolar transistor and hence deliver a record fT of 110 GHz. Secondary Ion Mass Spectroscopy (SIMS) and transmission electron microscopy are used to characterize the effect of the fluorine implantation energy and dose, the anneal temperature and ambient and the germanium pre-amorphisation implant on the fluorine profiles. These results show that retention of fluorine in the silicon is maximised when a high-energy fluorine implant is combined with a low thermal budget inert anneal. TEM images show that a high-energy fluorine implant into germanium pre-amorphised silicon eliminates the end of range defects from the germanium implant and produces a band of dislocation loops deeper in the silicon at the range of the fluorine implant. Boron SIMS profiles show a suppression of boron diffusion for fluorine doses at and above 5?1014cm-2, but no suppression at lower fluorine doses. This suppression of boron diffusion correlates with the appearance on the SIMS profiles of a fluorine peak at a depth of approximately Rp/2, which is attributed to fluorine trapped in vacancy-fluorine clusters. The introduction of a fluorine implant at this critical fluorine dose into a bipolar transistor process flow leads to an increase in cut-off frequency from 46 to 60GHz. Further optimisation of the base-width and the collector profile leads to a further increase in cut-off frequency to 110GHz. Two factors are postulated to contribute to the suppression of boron diffusion by the fluorine implant. First, the elimination of the germanium end of range defects, and the associated interstitial population, by the fluorine implant, removes a source of transient enhanced diffusion. Second, any interstitials released by the dislocation loops at the range of the fluorine implant would be expected to recombine at the vacancy-fluorine clusters before reaching the boron profile
Strongly Annular Tsuji Functions
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135351/1/jlms0079.pd
Leakage Current Mechanisms in SiGe HBTs Fabricated Using Selective and Nonselective Epitaxy
SiGe heterojunction bipolar transistors (HTBs) have been fabricated using selective epitaxy for the Si collector, followed in the same growth step by nonselective epitaxy for the p+ SiGe base and n-Si emitter cap. DC electrical characteristics are compared with cross-section TEM images to identify the mechanisms and origins of leakage currents associated with the epitaxy in two different types of transistor . In the first type, the polysilicon emitter is smaller than the collector active area, so that the extrinsic base implant penetrates into the single-crystal Si and SiGe around the perimeter of the emitter and the polycrystalline Si and SiGe exrtrinsic base. In these transistors, the Bummel plots are near-ideal and there is no evidence of emitter/collector leakage. In the second type, the collector active area is smaller than the polysilicon emitter, so the extrinsic base implant only penetrates into the polysilicon extrinsic base. In these transistors, the leakage currents observed depend on the base doping level. In transistors with a low doped base, emitter/collector and emitter/base leakage is observed, whereas in transistors with a high doped base only emitter/base leakage is observed. The emitter/collector leakage is explained by punch through o fhte base caused by thinning of the SiGe base at the emitter perimeter. The emitter/base leakeage is shown to be due to Poole-Frenkel mechanism and is explained by penetration of the emitter/base depletion region into the p+ polysilicon extrinsic base at the emitter periphery. Variable collector/base reverse leakage currents are observed and a variety of mechanisms are observed, including Shockley-Read-Hall recombination, trap assisted tunneling, Poole Frenkel and band to band tunneling. These result s are explained by the presence of polysilicon grains on the sidewalls of the field oxide at the collector perimeter
Sexually Transmitted Infection History among Adolescents Presenting to the Emergency Department
BACKGROUND: Adolescents and young adults account for about half of the annual diagnoses of sexually transmitted infections (STI) in the United States. Screening and treatment for STIs, as well as prevention, are needed in health-care settings to help offset the costs of untreated STIs.
OBJECTIVE: Our aim was to evaluate the prevalence and correlates of self-reported STI history among adolescents presenting to an emergency department (ED).
METHODS: Over two and a half years, 4389 youth (aged 14-20 years) presenting to the ED completed screening measures for a randomized controlled trial. About half (56%) reported lifetime sexual intercourse and were included in analyses examining sexual risk behaviors (e.g., inconsistent condom use), and relationships of STI history with demographics (sex, age, race, school enrollment), reason for ED presentation (i.e., medical or injury), and substance use.
RESULTS: Among sexually active youth, 10% reported that a medical professional had ever told them they had an STI (212 females, 35 males). Using logistic regression, female sex, older age, non-Caucasian race, not being enrolled in school, medically related ED chief complaint, and inconsistent condom use were associated with increased odds of self-reported STI history.
CONCLUSIONS: One in 10 sexually active youth in the ED reported a prior diagnosed STI. Previous STI was significantly higher among females than males. ED providers inquiring about inconsistent condom use and previous STI among male and female adolescents may be one strategy to focus biological testing resources and improve screening for current STI
A Simple Web-Based Tool to Compare Freshwater Fish Data Collected Using AFS Standard Methods
The American Fisheries Society (AFS) recently published Standard Methods for Sampling North American Freshwater Fishes. Enlisting the expertise of 284 scientists from 107 organizations throughout Canada, Mexico, and the United States, this text was developed to facilitate comparisons of fish data across regions or time. Here we describe a user-friendly web tool that automates among-sample comparisons in individual fish condition, population length-frequency distributions, and catch per unit effort (CPUE) data collected using AFS standard methods. Currently, the web tool (1) provides instantaneous summaries of almost 4,000 data sets of condition, length frequency, and CPUE of common freshwater fishes collected using standard gears in 43 states and provinces; (2) is easily appended with new standardized field data to update subsequent queries and summaries; (3) compares fish data from a particular water body with continent, ecoregion, and state data summaries; and (4) provides additional information about AFS standard fish sampling including benefits, ongoing validation studies, and opportunities to comment on specific methods. The web toolâprogrammed in a PHP-based Drupal frameworkâwas supported by several AFS Sections, agencies, and universities and is freely available from the AFS website and fisheriesstandardsampling.org. With widespread use, the online tool could become an important resource for fisheries biologists
Stability of Satellite Planes in M31 II: Effects of the Dark Subhalo Population
The planar arrangement of nearly half the satellite galaxies of M31 has been
a source of mystery and speculation since it was discovered. With a growing
number of other host galaxies showing these satellite galaxy planes, their
stability and longevity have become central to the debate on whether the
presence of satellite planes are a natural consequence of prevailing
cosmological models, or represent a challenge. Given the dependence of their
stability on host halo shape, we look into how a galaxy plane's dark matter
environment influences its longevity. An increased number of dark matter
subhalos results in increased interactions that hasten the deterioration of an
already-formed plane of satellite galaxies in spherical dark halos. The role of
total dark matter mass fraction held in subhalos in dispersing a plane of
galaxies present non trivial effects on plane longevity as well. But any
misalignments of plane inclines to major axes of flattened dark matter halos
lead to their lifetimes being reduced to < 3 Gyrs. Distributing > 40% of total
dark mass in subhalos in the overall dark matter distribution results in a
plane of satellite galaxies that is prone to change through the 5 Gyr
integration time period.Comment: 11 pages, 9 figures, accepted to MNRAS September 22 201
Factors Related to Nurses Working Satisfaction in General Hospitals of Wamena Region
Background: Nurse as one of the to health care employee at hospital a part important in the effort reaching the target of health development in the form of helath care service at patient. Upbringing treatment helath care service determined also by satisfaction work from nurse having an effect on to nurse performance in giving treatment upbringing. Target of research: The Factors Affecting With Satisfaction Job Of Nurse At Wamena General Hospital. Method Research : Analytic with cross sectional study design. Population is all nurse Wamena gernal hospital as much 173 people as sampel by totalizeing sampling during one months in August 2017 by using questioner. Data analysed to use square chi and regression binary logistics. Result of research : There is factors affecting age (p-value = 0,009; RP = 1,495; CI95%= (1,104 - 2,023), job position (p-value = 0,031; RP = 2,519; CI95%= (0,926 - 6,854), year of service (p-value = 0,037; RP= 1,368; CI95%= (1,029 - 1,819), prosperity program (p-value = 0,000; RP = 1,762; CI95%= (1,362 - 2,279) and salary (p-value = 0,000; RP = 2,263; CI95%= (1,616 - 3,167) to satisfaction work nurse Wamena general hospital. There is no factors affecting between education (p-value = 0,924; RP = 0,894; CI95%= (0,500 - 1,601), appreciation (p-value = 0,141; Rp = 0,798; CI95%= (0,604 - 1,054) and interpersonal relation to satisfaction work of nurse in Wamena general hospital (p-value = 0,261; RP = 0,831; CI95%= (0,620 - 1,113). Dominant factor to satisfaction work of nurse Wamena general hospital is low salary specially at nurse with honorer state
Discrete molecular dynamics simulations of peptide aggregation
We study the aggregation of peptides using the discrete molecular dynamics
simulations. At temperatures above the alpha-helix melting temperature of a
single peptide, the model peptides aggregate into a multi-layer parallel
beta-sheet structure. This structure has an inter-strand distance of 0.48 nm
and an inter-sheet distance of 1.0 nm, which agree with experimental
observations. In this model, the hydrogen bond interactions give rise to the
inter-strand spacing in beta-sheets, while the Go interactions among side
chains make beta-strands parallel to each other and allow beta-sheets to pack
into layers. The aggregates also contain free edges which may allow for further
aggregation of model peptides to form elongated fibrils.Comment: 15 pages, 8 figure
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