gebhart/patrepeval huggingface dataset:
Thermodynamics and Performance Projections for Intercooled/Reheat/Recuperated Gas Turbine Systems (1987)

Intercooled/Recuperated gas turbine systems provide high-efficiency and power density for naval propulsion. Current aero-derivative systems are capable of about 43% thermal efficiency in this configuration. With continued progress in gas-turbine materials and cooling technology, the possibility of further improving system performance by incorporation of gas-turbine reheat arises. A preliminary scan of this class of cycles is presented and compared with non-reheat intercooled/recuperated cycles at two levels of component technology. For conservative component technology, the reheat is found to provide very modest performance advantages. With advanced components and ceramic thermal barrier coatings, the reheat is found to offer potential for specific power improvements of up to 33% and for modest efficiency gains, on the order of one percentage point, while enabling turbine inlet temperatures well below those for the most efficient non-reheat cycles. The high-performance reheat systems, however, require reheat-combustor inlet temperatures beyond current practice. The use of water-injection in the intercooler, together with an aftercooler and a water-injected evaporative-recuperator is found to produce very large gains in efficiency as well as specific power. This modification may be feasible for land-based systems, where it can compete favourably with combined cycles. Despite the difficulty of obtaining pure water for a shipboard propulsion system, those large gains may justify further studies of this system and of means to provide its water supply in marine applications.
Wideband planar antenna with reconfigurable omnidirectional and directional radiation patterns (2013)

Proposed is a reconfigurable planar antenna that can generate omnidirectional and directional radiation patterns. The design has been tuned to resonate at 3.8 GHz and covers a bandwidth of several hundred MHz. Using RF switches, the antenna can generate five different radiation patterns: a single omnidirectional mode and four directional modes. Simulations and measurements were carried out and are in good agreement. The compact planar design, large operating bandwidth, and ability to create both omnidirectional and directional radiation patterns make this antenna suitable for small form factor wireless devices in next generation cognitive networks.
Efeito da co-injeção de apirase sobre o crescimento de gliomas implantados em cérebro de ratos (2004)

O ATP uma importante molcula sinalizadora no Sistema Nervoso Central e perifrico.Nucleotdeos e nucleosdeos induzem uma intensa proliferao em vrias linhagens de gliomas e a degradao do ATP pelos gliomas por ecto-enzimas extremamente reduzida.A invaso de gliomas pode estar envolvida com o mecanismo de liberao de ATP a partir da morte do tecido adjacente e devido leso causada pela resseco do tumor.A fim de depletar o ATP presente no meio extracelular, a enzima apirase foi testada no tratamento gliomas implantados em SNC ratos.Ratos Wistar machos de 60 dias pesando entre 250-270 gramas foram submetidos cirurgia estereotxica para a implantao de clulas de glioma C6 de ratos.Aps a cirurgia os ratos foram divididos nos seguintes grupos: controle (glioma C6), tratado (glioma + co-injeo de apirase) e controle da apirase (glioma + co-injeo de apirase fervida).O grupo tratado recebeu 2U de apirase purificada (grau VII) dissolvida em DMEM e o grupo controle da apirase recebeu tratamento semelhante com a enzima desnaturada (fervida).Os animais foram mortos 20 dias psimplantao e lminas histolgicas do crebro foram realizadas para permitir a medida do crescimento tumoral.Os resultados obtidos demonstraram que os ratos tratados com a enzima apirase tiveram uma reduo significativa (p<0, 05) em relao aos grupos controle e controle da apirase.Confirmando assim o envolvimento do ATP extracelular na invaso dos glioblastomas in vivo.(BIC).
The effectiveness of the proportional counter as a solar X-ray monitor on the NEAR mission (2002)

A proportional counter with a special mask/filter (SMPC) designed to measure solar output from 1 to 10 keV and to enhance sensitivity at higher energies where the solar flux is lower, as well as an experimental Si PIN detector (SMPN) are being used to measure solar flux on the Near Earth Asteroid Rendezvous (NEAR) mission. The complimentary nature of their performances is considered.
Quantile based noise estimation for spectral subtraction and Wiener filtering (2002)

Elimination of additive noise from a speech signal is a fundamental problem in audio signal processing. In this paper we restrict our considerations to the case where only a single microphone recording of the noisy signal is available. The algorithms which we investigate proceed in two steps. First, the noise power spectrum is estimated. A method based on temporal quantiles in the power spectral domain is proposed and compared with pause detection and recursive averaging. The second step is to eliminate the estimated noise from the observed signal by spectral subtraction or Wiener filtering. The database used in the experiments comprises 6034 utterances of German digits and digit strings by 770 speakers in 10 different cars. Without noise reduction, we obtain an error rate of 11.7%. Quantile based noise estimation and Wiener filtering reduce the error rate to 8.6%. Similar improvements are achieved in an experiment with artificial, non-stationary noise.
A modified generalised Lloyd algorithm for VQ codebook design (2002)

The Linde-Buzo-Gray (LBG) algorithm, which consists of the splitting initialisation method and GLA, plays a basic and important role in codebook generation of VQ. Obviously, there are two approaches along which research efforts may be directed: (i) to improve GLA, and (ii) to improve the initialization procedure. In this paper, a selective GLA driven by a new specified organisation mechanism is proposed as an alternative to GLA. With the initial codebook obtained from a K-d tree based on the greatest co-ordinate variance, the selective GLA generates a better codebook than GLA and the splitting-initialized LBG algorithm. However, the improvement in performance is accompanied by a raise in the computational complexity involved in the design process. A novel version of partial GLA, whose framework is similar to that of the selective GLA, is also described in this paper. It is found to outperform GLA at the expense of an increased amount of computation.
Gentamicin PMMA Beads and Other Local Antibiotic Carriers in Two-Stage Revision of Total Knee Infection: A Review (2001)

Crl:CD1 (ICR) BR mice were colonized in the gastrointestinal (GI) tract with Candida albicans. This strain was susceptible to ketoconazole (MIC=0.25 microg/ml), itraconazole (minimum inhibitory concentration, MIC=0.25 microg/ml), and fluconazole (MIC=4 microg/ml). Subsequently the animals received monotherapy with ketoconazole by mouth (equivalent to human dose of 2.9 mg/kg/day), or itraconazole by mouth (equivalent to human dose of 2.9 mg/kg/day), or fluconazole either subcutaneously (equivalent to human dose of 2.2 mg/kg/day), or by mouth (equivalent to human dose of 2.2 mg/kg/day), for 10 days. Quantitative stool cultures at the end and one week after the end of treatment revealed that all three azoles caused a small and statistically non significant reduction of C. albicans concentration in the stools. The different route of administration of fluconazole did not produce different results. In conclusion, these azoles, used at the present doses and schedules, have minimal effect on murine GI colonization by this strain of C. albicans which is susceptible but with rather increased MICs.
Unravelling the Correlation between the Aspect Ratio of Nanotubular Structures and Their Electrochemical Performance To Achieve High‐Rate and Long‐Life Lithium‐Ion Batteries (2014)

The fundamental understanding of the relationship between the nanostructure of an electrode and its electrochemical performance is crucial for achieving high-performance lithium-ion batteries (LIBs). In this work, the relationship between the nanotubular aspect ratio and electrochemical performance of LIBs is elucidated for the first time. The stirring hydrothermal method was used to control the aspect ratio of viscous titanate nanotubes, which were used to fabricate additive-free TiO2 -based electrode materials. We found that the battery performance at high charging/discharging rates is dramatically boosted when the aspect ratio is increased, due to the optimization of electronic/ionic transport properties within the electrode materials. The proof-of-concept LIBs comprising nanotubes with an aspect ratio of 265 can retain more than 86 % of their initial capacity over 6000 cycles at a high rate of 30 C. Such devices with supercapacitor-like rate performance and battery-like capacity herald a new paradigm for energy storage systems.
Xe films on a decagonal Al-Ni-Co quasicrystalline surface (2006)

The grand canonical Monte Carlo method is employed to study the adsorption of Xe on a quasicrystalline Al-Ni-Co surface. The calculation uses a semiempirical gas-surface interaction, based on conventional combining rules and the usual Lennard-Jones Xe-Xe interaction. The resulting adsorption isotherms and calculated structures are consistent with the results of low energy electron diffraction experimental data. In this paper we focus on five features not discussed earlier [Phys. Rev. Lett. 95, 136104 (2005)]: the range of the average density of the adsorbate, the order of the transition, the orientational degeneracy of the ground state, the isosteric heat of adsorption of the system, and the effect of the vertical cell dimension.
Alu-SINE Exonization: En Route to Protein-Coding Function (2005)

The majority of more than one million primate-specific Alu elements map to nonfunctional parts of introns or intergenic sequences. Once integrated, they have the potential to become exapted as functional modules, e.g., as protein-coding domains via alternative splicing. This particular process is also termed exonization and increases protein versatility. Here we investigate 153 human chromosomal loci where Alu elements were conceivably exonized. In four selected examples, we generated, with the aid of representatives of all primate infraorders, phylogenetic reconstructions of the evolutionary steps presumably leading to exonization of Alu elements. We observed a variety of possible scenarios in which Alu elements led to novel mRNA splice forms and which, like most evolutionary processes, took different courses in different lineages. Our data show that, once acquired, some exonizations were lost again in some lineages. In general, Alu exonization occurred at various time points over the evolutionary history of primate lineages, and protein-coding potential was acquired either relatively soon after integration or millions of years thereafter. The course of these paths can probably be generalized to the exonization of other elements as well.
Radiation damping for speeding‐up NMR applications (2012)

Abstract In this work, we address a problem of low repetition rate in NMR applications. We suggest using a dynamical regime in the radiation damping which allows returning the nuclear magnetization to its equilibrium state during a time interval that is negligible compared to the spin relaxation time. We show theoretically that the radiation damping in the spin echo technique can be as effective as application of special rf pulses. We obtain an analytical estimate for optimal damping which is consistent with our numerical simulations. © 2012 Wiley Periodicals, Inc. Concepts Magn Reson Part A 40A: 179–185, 2012.
Ossification of the auricle in Addison's disease (1989)

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High-power terahertz metasurface quantum-cascade VECSELs (Conference Presentation) (2019)

The VECSEL architecture is shown to be an effective approach for building THz quantum-cascade lasers with scalable watt-level output power in a high quality beam pattern. The enabling component is a “metasurface” made up of sub-wavelength arrays of antenna-coupled sub-cavities loaded with quantum-cascade active material. By using a sub-cavity antenna based upon a third-order resonance (rather than a first order resonance), metasurfaces with higher fill factors are demonstrated which are suitable for large output powers. Watt-level pulsed output powers have been demonstrated in a single mode, with tunability achieved by intra-cryostat tuning of the cavity length.
Optimum Conditions for Wormhole Formation in Carbonate Porous Media: Influence of Transport and Reaction (1999)

Summary The effects of transport and reaction on the phenomenon of worm-hole formation were investigated for a wide range of fluid systems including strong acids, weak acids, and chelating agents. These fluid systems are influenced by a variety of transport and reaction processes such as the transport of reactants to the surface, the reversible surface reactions, and the transport of products away from the surface. When these transport and reaction processes are taken into account, a common dependence of the dissolution phenomenon on the Damköhler number is observed. There exists an optimum Damkohler number at which a minimum number of pore volumes are required for channel breakthrough. This optimum Damkohler number occurs at approximately 0.29 for all the fluid/ mineral systems investigated in this study. In addition, an optimum kinetic parameter exists at which wormhole formation is most efficient. This optimum kinetic parameter occurs at a value of about 130. Together, the Damkohler number and the kinetic parameter provide a complete description of the dissolution phenomenon.
Waiting to be weighed: a pilot study of the effect of delayed newborn weighing on breastfeeding outcomes. (2009)

Although breastfeeding initiation rates are rising in Canada, rates of continued breastfeeding remain far below international recommendations. Two factors that can have a positive influence on breastfeeding outcomes are maternal confidence and support and education provided by public health nurses (PHNs). The weighing of newborns by PHNs within the first days after birth is standard practice in monitoring neonatal health. However, little is known about the effect of the timing of PHN neonatal weighing on maternal confidence or on outcomes such as intended duration of breastfeeding and formula supplementation rates. This pilot study compared breastfeeding self-efficacy, intended duration of breastfeeding and formula supplementation rates in two groups of mothers and newborns randomly assigned to different weighing protocols. Newborns in the standard care group were weighed post hospital discharge on day 2 or 3 after birth (n = 23), while those in the experimental group were weighed on day 5 (n = 26). No statistically significant differences were found between the two groups. However, a statistically significant increase in formula supplementation over the two-week study period was observed in the standard-weighing group and not in the delayed-weighing group. This finding suggests that further research is needed to assess the impact of PHN infant weighing protocols on breastfeeding outcomes.
Loss-compensated and active hyperbolic metamaterials (2011)

We have studied the dispersion relations of multilayers of silver and a dye-doped dielectric using four methods: standard effective-medium theory (EMT), nonlocal-effect-corrected EMT, nonlinear equations based on the eigenmode method, and a spatial harmonic analysis method. We compare the validity of these methods and show that metallic losses can be greatly compensated by saturated gain. Two realizable applications are also proposed. Loss-compensated metal-dielectric multilayers that have hyperbolic dispersion relationships are beneficial for numerous applications such as subwavelength imaging and quantum optics.
Botulinum toxin type A in treatment of bilateral primary axillary hyperhidrosis: randomised, parallel group, double blind, placebo controlled trial (2001)

Botulinum toxin type A is a safe and effective treatment for primary axillary hyperhidrosis and produces high levels of patient satisfaction.
Severe tumor lysis syndrome following splenic irradiation (1999)

A 72-year-old man suffering from non-Hodgkin's lymphoma is described. After failing to respond to chlorambucil–prednisone regimen for three months, he was treated by splenic irradiation (total dose 500 cGY) in 10 consecutive daily doses. Two days after the last irradiation, the patient developed acute tumor lysis syndrome (TLS) with extreme blood levels of uric acid (33.7 mg/dl), phosphorus (13.7 mg/dl), potassium (6.08 mEq/l), and calcium (6.8 mg/dl). It should be remembered that the acute TLS, which usually occurs following chemotherapy, can also be radiation-induced. Am. J. Hematol. 60:75–76, 1999. © 1999 Wiley-Liss, Inc.
Latency-aware and -predictable Communication with Open Protocol Stacks for Remote Drone Control (2020)

In order to create cooperating swarms of Unmanned Autonomous Vehicles (UAVs) that also interact with various other systems and devices, open and free communication systems are mandatory. This paper presents an implementation of such a communication system to incorporate the Crazyflie nano-drone as a UAV platform. The protocol stack leverages the open Predictably Reliable Real-time Transport (PRRT) protocol that adds latency-awareness and -predictability to stacks composed of standard Internet protocols. To enable the drone to receive and reply to control commands via Wi-Fi, it has been extended with a Raspberry Pi that runs two variants of the Crazybridge-a software to connect the control board to the network. To evaluate how practical this solution is for the use in control applications, the communication has been analysed with a focus on the latency properties. Our investigations show that despite using the open protocol stack-and hence opting out of specialised implementations-the resulting latencies are in the same order of magnitude (4 to 9 ms) as the latency of the proprietary link.
Abstract 14331: Findings of a Novel Barbershop-Based Peripheral Artery Disease Screening Program and Intervention for Black Men (2021)

Introduction: Peripheral artery disease (PAD) increases risk of cardiovascular events and limb events including amputations. Black race is a strong risk factor for PAD. Screening for PAD using the ankle-brachial index (ABI) can lead to early diagnosis and treatment. This is the first study to screen for PAD using the ABI in barbershops. Hypothesis: Barbershop-based screening and an educational intervention can detect PAD and increase PAD knowledge in a high-risk population. Methods: A screening pilot study was conducted at two barbershops in Cleveland from June-December 2020. Black male participants aged 40-89 completed an initial screening visit with automated ABI and a confirmatory visit with Doppler ABI. All were invited to watch an educational video on PAD and interviewed at 2-month follow-up. Automated blood pressure, health status, and knowledge about PAD were assessed at all visits. Results: 37 participants completed the initial screening, 31 (84%) completed the confirmatory testing visit, 29 (78%) completed the exit visit, and 27 (73%) watched the educational video. After screening with both automated and Doppler ABI, PAD was identified in 5/31 (16.1%) participants. PAD awareness was low, but among those who completed the study, 23 (82%) showed improved PAD awareness scores as well as improvement in their self-assessed knowledge of PAD ( p&lt; 0.001). An association was found between good PAD awareness at baseline and education: compared to those with some college education, those who did not graduate high school scored lower on PAD awareness ( p = .022), as did those who only had a high school diploma or GED ( p = .049). Conclusions: In a pilot study, barbershop-based screening for PAD among Black men revealed a higher than expected PAD prevalence and low PAD awareness. ABI screening and an educational video increased PAD awareness. ABI screening and educational outreach in the barbershop may be effective tools to diagnose PAD and increase awareness among Black men.
Profiles of Older Adults Who Screen Positive for Neglect During an Emergency Department Visit (2002)

The purpose of this paper is to describe how elder mistreatment (EM) assessment has been conducted in emergency departments in an ongoing study on elder neglect and to present profiles of older adults who are assessed as neglected by domestic caregivers. Data from 334 patients, which include 22 neglect cases, are presented in order to examine the demographic profile of the sample and the differences between the neglect and non-neglect groups. Results suggest that, although there are no differences in the basic demographic variables of the two groups, differences exist in regards to the type of caregiver, the reason for the patient's emergency department visit, and the elder's functional and dependency status.
<title>Analysis of GMPLS OSPF-TE protocol and its enhancement for routing in optical networks</title> (2004)

For distributed control, network topology and link resource information is required at the ingress nodes to compute and route optical paths. It is the responsibility of routing protocols to disseminate this information. Generalized MPLS has extended traditional IP routing protocols such as OSPF for explicit path computation and traffic engineering (TE) in optical transport networks. However it is noted that the current version of GMPLS-extended OSPF-TE does not carry sufficient link state information to compute shared mesh restored paths. This paper describes the new extensions to the GMPLS OSPF-TE protocol to support the path computation for shared mesh restoration in optical networks. The efficient methods for aggregation and dissemination of link resource availability and sharing information are proposed. Especially these new extensions support both Shared Risk Link Group (SRLG) disjoint and node disjoint restoration paths, which provides more flexibility to the network operators. The network operators can choose to guarantee recovery from a SRLG failure or from a node/SRLG failure based upon the applications and the service level agreements with their customers. Furthermore, the paper presents an analytical model to estimate the performance of the GMPLS OSPF-TE protocol and the proposed extensions, including control bandwidth and memory requirements.
Comparison of optical single-sideband modulation and chirped fiber gratings as dispersion mitigating techniques in optical millimeter-wave multichannel systems (1999)

A comparative study between optical single-sideband (SSB) modulation and chirped fiber gratings (CFG) as dispersion equalization techniques is carried out. The simulation results show that the dispersion-induced distortion arising in optical millimeter-wave multichannel systems can not be compensated by employing the SSB modulation approach. Furthermore, we have demonstrated that the use of a CFG significantly reduces (nearly 25 dB) the composite triple beat (CTB) distortion. An accurate design of the CFG however must be addressed because the equalized CTB levels are very sensitive to the nonideal characteristics of the CFG such as a deviation of the optimum group delay slope or ripples.