gebhart/patrepeval huggingface dataset:
Evaluation of the Operating Efficiency of a Hybrid Wind–Hydro Powerplant (2020)

This paper analyzes the operating efficiency of a hybrid wind–hydro power plant located in El Hierro Island. This plant combines a wind farm (11.48 MW) and a pumped storage power plant (11.32 MW). It was built with the aim of supplying the island demand from renewable energy instead of using existing diesel units. The paper discusses several operational strategies and proposes an efficiency metric. Using 10 min data, the operation of this power plant has been simulated. From these simulations (more than 50,000 for a year), the operating efficiency and the percentage of demand covered from renewable energy is obtained. The difference between the worst and the best strategy is a twofold increase in efficiency. Moreover, the results of the simulations are compared with the system operational history since June 2015 (when the wind–hydro power plant started operation) until 2018. These comparisons show a reasonable agreement between simulations and operational history.
Physical Distribution System for Aircraft External Fuel Tanks-Survey. (1985)

The general objective of this study was to conduct a survey and analysis of current and planned aircraft external fuel tanks, with emphasis on the disposability and nestability aspects of these fuel tanks. The study focused on design requirements, fabrication and assembly, and physical distribution, with particular attention directed to the use of the robotic equipment for the assembly of nestable fuel tanks aboard the ship. The principal conclusion of this study is that the development of disposable, nestable external aircraft fuel tanks with automated assembly aboard ship, using robotic equipment, is a feasible option for implementation within the next five to ten years. Chapter I of the report presents an introduction and summary description of the major results of the survey. Chapter II then provides a summary description of the tentative operational requirements established by the Navy for disposable, nestable external aircraft fuel tanks. Chapter III presents a discussion of the possible fabrication and assembly techniques and problems for such fuel tanks. Chapter IV then discusses the physical distribution aspects of external aircraft fuel tanks. Chapter V concludes with a listing of the conclusions and recommendations resulting from this analysis. Originator-supplied keywords: Aircraft fuel tanks; Robotics; Fabrication and assembly; Materials handling; Physical distribution.
21st Century Locomotive Technology: Quarterly Technical Status Report 10 DOE/AL68284-TSR10 (2006)

Advanced fuel injection experimental results on a single cylinder engine operating at part load show the path to NOx vs SFC tradeoffs. Hybrid battery vibration tests have been performed. Analysis of advanced Battery Management System field validation results showed effective SOC estimation. A fuel optimizer simulation lab has been completed.
ChemInform Abstract: Total Synthesis of Eleutherobin. (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
The effect of lauric‐based molecules on trilaurin crystallization (1994)

Abstract The crystal growth of trilaurin and the effect of partial laurates upon it have been investigated by using temperature gradient microscopy with differential scanning calorimetry and X‐ray diffraction. The complex nature of trilaurin crystallization was demonstrated. It was found that the addition of monolaurin and lauric acid increased the crystal growth rate of trilaurin but decreased the facet and crystal size. Conversely, there was a significant reduction in growth rate upon the addition of dilaurin isomers. Crystal morphology was also altered, and the relative stability of the metastable phases was increased. The growth rate was lower for a sample containing 1–3 dilaurin than for one containing 1–2 dilaurin. It is postulated that the varying effects are caused by the varying sizes and shapes of the additive molecules.
Low-salinity Water-alternate-surfactant in Low-permeability Carbonate Reservoirs (2015)

Low-salinity water injected into carbonate cores, which have undergone sea-water injection, can produce additional oil more economically if a low-concentration non-ionic surfactant is added to the low-salinity water and injected as chase fluid. One major reason for the additional oil recovery is that low-concentration surfactant effectiveness favors the low-salinity environment. Several coreflooding, contact angle, and IFT experiments were performed to assess the proposed process. The core flooding sequence includes seawater, low-salinity water, and low-concentration non-ionic surfactant. However, for field application, we proposed low-salinity water-alternate-surfactant injection. The surfactant concentration in low-salinity water was 1,000 and 5,000 ppm. Phase behavior and cloud point measurements were conducted prior to surfactant injection. The core permeability is 0.5 to 1.5 md, and porosity ranges from 0.18 to 0.25. Cores were aged for eight weeks at reservoir pressure and temperature. The pendant drop oil-brine IFT and captive oil-droplet contact angle measurements were performed at variable brine salinity in the presence of surfactant. Seawater and low-salinity waterflooding corefloods yielded ultimate oil recoveries of up to 57 percent. Up to 10 percent additional oil recoveries was obtained from low-concentration non-ionic surfactant in low-salinity waterflood. With decreasing salinity, in presence of 1,000-ppm surfactant, favorable wettability alteration from intermediate-wet to water-wet was observed by contact angle measurements. Moreover, addition of small concentration of surfactant decreased the IFT and altered the wettability of several one-inch diameter, crude-aged, discs to water wet.
Fatigue and Microstructural Properties of Quenched Ti-6Al-4V. A Crystallographic Study of Fatigue Damage in Titanium. Corrosion and Corrosion-Fatigue Behavior of Ti-4.5Al-5Mo-1.5Cr (Corona 5) and Ti-6Al-4V. (1980)

The mechanical properties and microstructures of Ti-6Al-4V were determined for specimens heat treated at temperatures from 84 C to 1065 C for 10 minutes and water quenched; these properties were compared with those of alpha'-Beta annealed specimens. Specimens heat treated at 900 C and water quenched had higher fatigue lives by a factor of four to ten relative to the other treatments, in addition this treatment resulted in high ductility, yield strength, tensile strength and elastic modulus. Microstructure studies utilizing optical and transmission microscopy showed that the improved fatigue lives were a result of strain induced transformation of retained beta to alpha' martensite. Isothermal aging of as quenched specimens reduced the fatigue lives and the retained beta was thermally activated to transform to alpha' martensite. the beta to alpha' martensite transformation observed was therefore an isothermal martensite transformation whereas it is presently assumed that this transformation is always athermal. The amount of retained beta and its relative stability was shown to depend upon the heat treatment temperature.
Expectations for Perspectives in ACS Sustainable Chemistry & Engineering (2021)

status: Published
Longitudinal In Vivo SPECT/CT Imaging Reveals Morphological Changes and Cardiopulmonary Apoptosis in a Rodent Model of Pulmonary Arterial Hypertension (2012)

Pulmonary arterial hypertension (PAH) has a complex pathogenesis involving both heart and lungs. Animal models can reflect aspects of the human pathology and provide insights into the development and underlying mechanisms of disease. Because of the variability of most animal models of PAH, serial in vivo measurements of cardiopulmonary function, morphology, and markers of pathology can enhance the value of such studies. Therefore, quantitative in vivo SPECT/CT imaging was performed to assess cardiac function, morphology and cardiac perfusion utilizing (201)Thallium ((201)Tl) in control and monocrotaline-treated rats. In addition, lung and heart apoptosis was examined with (99m)Tc-Annexin V ((99m)Tc-Annexin) in these cohorts. Following baseline imaging, rats were injected with saline or monocrotaline (50 mg/kg, i.p.) and imaged weekly for 6 weeks. To assess a therapeutic response in an established pulmonary hypertensive state, a cohort of rats received resveratrol in drinking water (3 mg/kg/day) on days 28-42 post-monocrotaline injection to monitor regression of cardiopulmonary apoptosis. PAH in monocrotaline-treated rats was verified by conventional hemodynamic techniques on day 42 (right ventricular systolic pressure (RSVP) = 66.2 mmHg in monocrotaline vs 28.8 mmHg in controls) and in terms of right ventricular hypertrophy (RV/LVS = 0.70 in monocrotaline vs 0.32 in controls). Resveratrol partially reversed both RVSP (41.4 mmHg) and RV/LVS (0.46), as well as lung edema and RV contractility +dP/dt(max). Serial (99m)Tc-Annexin V imaging showed clear increases in pulmonary and cardiac apoptosis when compared to baseline, which regressed following resveratrol treatment. Monocrotaline induced modest changes in whole-heart perfusion as assessed by (201)TI imaging and cardiac morphological changes consistent with septal deviation and enlarged RV. This study demonstrates the utility of functional in vivo SPECT/CT imaging in rodent models of PAH and further confirms the efficacy of resveratrol in reversing established monocrotaline-induced PAH presumably by attenuation of cardiopulmonary apoptosis.
Design and Analysis of Si Interconnects for All-Spin Logic (2014)

An Si spin interconnect for all-spin logic (ASL) is analyzed by a comprehensive physical model, including spin injection, spin transport, and stochastic magnetization dynamics. It is shown that the spin current density and spin polarization of the current can be improved by changing material properties, interface conditions, and structure dimensions. Furthermore, with the help of an electric field, spin information can preserve and propagate between magnets in a highly doped micrometer-scale Si channel. Different from metallic ASL, instead of the short spin relaxation length, the main constraint of an Si spin interconnect is the high bias voltage required to minimize the energy-delay product (EDP). The minimum EDP and corresponding bias voltage can be reduced significantly by downscaling the nanomagnet. This improvement in the magnetic response allows Si to provide a compatible low-power interconnect technology to metallic ASL.
Table S1 from Syntaphilin Ubiquitination Regulates Mitochondrial Dynamics and Tumor Cell Movements (2023)

&lt;p&gt;Pathway analysis of SNPH-associated proteins&lt;/p&gt;
Characterization of the transient behavior of a GaAs MESFET using dynamic I-V and S-parameter measurements (1996)

Dynamic I-V and S-parameter characterization of a medium-power MESFET is presented. In particular, this paper presents an innovative fully automated six-port network analyzer (SPNA) operated in pulse conditions. The results reveal the transient behavior of the GaAs MESFET under pulse conditions which may be attributed to self-heating and/or trap-related anomalies. Furthermore, using standard procedure, these S-parameters could readily be used to extract the dynamic electrical model elements (C/sub gs/, C/sub gd/, G/sub ds/, G/sub m/, etc.) of the MESFET. This system is particularly suitable for studying trap-related phenomena and self-heating effects in GaAs devices and for large-signal/power characterization.
Efficient and Privacy Preserving Approximation of Distributed Statistical Queries (2021)

In recent years, an increasing amount of data is collected in different and often, not cooperative, databases. The problem of privacy-preserving, distributed calculations over separate databases and, a relative to it, the issue of private data release was intensively investigated. However, despite a considerable progress, computational complexity and consequently, the performance of the computations, due to an increasing size of data, remains a limiting factor in real-world deployments. Especially in the case of privacy-preserving computations. In this paper, we suggest sampling as a method of improving computational performance. Sampling was a topic of extensive research in the past that recently received a boost of interest. We provide a sampling method targeted at separate, non-collaborating, vertically partitioned datasets. The method is exemplified and tested on an approximation of intersection set both with and without a privacy-preserving mechanism. An analysis of the bound on the error as a function of the sample size is discussed and a heuristic algorithm is suggested to further improve the performance. The algorithms were implemented and experimental results confirm the validity of the approach.
RDE Diluent Mixing & Shock Negation (2021)

View Video Presentation: https://doi.org/10.2514/6.2021-0902.vid A co-annular diluent injector and rotating detonation engine exhausts into a convergent conical annulus and conventional nozzle in a numerical simulation. The diluent flow is required to cool RDE flow to levels compatible with turbine material limits. The exiting rotating oblique shock interacts with the diluent and creates a helical vortex that entrains and mixes the diluent. The decreasing radius of the conical annulus decreases the azimuthal wave speed until the rotating shock devolves into a pressure wave. The resulting flow is cooler and lacks the high frequency fluctuations of the RDE exhaust. Pressure gain is reduced, but a narrow window exists to retain some of the pressure gain generated by the RDE. Simulation flow is found to be consistent with an analytic RDE cycle and an accounting of the entropy of mixing.
usICIC—A Proactive Small Cell Interference Mitigation Strategy for Improving Spectral Efficiency of LTE Networks in the Unlicensed Spectrum (2015)

The deployment of long term evolution (LTE) in the unlicensed spectrum (LTE-U) has been gaining significant industry momentum in recent months. The US 5-GHz Unlicensed National Information Infrastructure (UNII) bands that are currently under consideration for LTE deployment in the unlicensed spectrum contain only a limited number of 20 MHZ channels. Thus, in a dense multi-operator deployment scenario, one or more LTE-U small cells have to coexist and share the same 20 MHz unlicensed channel with each other and with the incumbent Wi-Fi. In this paper, we present the scenario and demonstrate that in the absence of an explicit interference mitigation mechanism, there will be a significant degradation in the overall LTE-U system performance for LTE-U cochannel coexistence in countries that do not mandate listen-before-talk (LBT) requirements. We then present the unlicensed spectrum intercell interference co-ordination (usICIC) mechanism as a time-domain multiplexing technique for interference mitigation for the sharing of an unlicensed channel by multioperator LTE-U small cells. Through extensive simulation results, we also demonstrate that our proposed usICIC mechanism will result in 40% or more improvement in overall LTE-U system performance.
Impact of stator grounding in low power single-phase EC-motors (2014)

Bearing currents cause a reduction of ball bearing's lifetime in electronically commutated permanent magnet motors. To compensate the lifetime decreasing factors, a tradeoff between special bearings and additional changes in the machine design have to be found. Stator grounding, for example, keeps the bearing voltage low and thus guarantees a long fan system's lifetime, however, results in a higher input filter effort. On the other hand, instead of reducing the bearing voltage, hybrid bearings could be deployed, which feature a high dielectric strength. The major disadvantage is that hybrid bearings are much more expensive than conventional metal bearings, thus the extra cost for the hybrid bearings has to be weighed up against the higher filter effort needed with stator grounding. In this paper bearing damage mechanisms are analyzed and the impact of stator grounding to avoid bearing currents in low power singlephase motors is presented. Based on the presented filter design procedure, the additional filter effort for stator grounded motors is determined, which shows that hybrid bearing are undesirable in mass application.
Search for Background Gravitational Radiation (1985)

We present the result of a preliminary experiment determining an upper limit of the density of the background gravitational radiation at 8.6 kHz. The outputs of a pair of resonant antennas operating at room temperature are directly correlated retaining their phases. After 50 hours of observation, the energy density of the radiation is found to be (1.0±1.2)×10 -5 J m -3 Hz -1 .
Learning Polynomials with Neural Networks (2014)

We study the effectiveness of learning low degree polynomials using neural networks by the gradi-ent descent method. While neural networks have been shown to have great expressive power, and gradient descent has been widely used in prac-tice for learning neural networks, few theoretical guarantees are known for such methods. In par-ticular, it is well known that gradient descent can get stuck at local minima, even for simple classes of target functions. In this paper, we present sev-eral positive theoretical results to support the ef-fectiveness of neural networks. We focus on two-layer neural networks where the bottom layer is a set of non-linear hidden nodes, and the top layer node is a linear function, similar to Bar-ron (1993). First we show that for a randomly initialized neural network with sufficiently many hidden units, the generic gradient descent algo-rithm learns any low degree polynomial, assum-ing we initialize the weights randomly. Secondly, we show that if we use complex-valued weights (the target function can still be real), then un-der suitable conditions, there are no “robust lo-cal minima”: the neural network can always es-cape a local minimum by performing a random perturbation. This property does not hold for real-valued weights. Thirdly, we discuss whether sparse polynomials can be learned with small neural networks, with the size dependent on the sparsity of the target function.
Processing Complex Events in Fog-Based Internet of Things Systems for Smart Agriculture (2021)

The recent growth of the Internet of Things' services and applications has increased data processing and storage requirements. The Edge computing concept aims to leverage the processing capabilities of the IoT and other devices placed at the edge of the network. One embodiment of this paradigm is Fog computing, which provides an intermediate and often hierarchical processing tier between the data sources and the remote Cloud. Among the major benefits of this concept, the end-to-end latency can be decreased, thus favoring time-sensitive applications. Moreover, the data traffic at the network core and the Cloud computing workload can be reduced. Combining the Fog computing paradigm with Complex Event Processing (CEP) and data fusion techniques has excellent potential for generating valuable knowledge and aiding decision-making processes in the Internet of Things' systems. In this context, we propose a multi-tier complex event processing approach (sensor node, Fog, and Cloud) that promotes fast decision making and is based on information with 98% accuracy. The experiments show a reduction of 77% in the average time of sending messages in the network. In addition, we achieved a reduction of 82% in data traffic.
Fabrication of ZnSe:Te by hot pressing techniques (2009)

We have recently fabricated tellurium-doped zinc selenide (ZnSe:Te) in a robust optical ceramic form, in the first synthesis of this remarkable material from a precursor powder, using powder consolidation techniques. We utilized two techniques in particular - hot uniaxial and hot isostatic pressing - in order to achieve the desired physical and chemical properties, and we are continuing our efforts to refine processing methodologies and parameters to improve this material's physical characteristics and performance. ZnSe:Te promises major advances in radiation imaging and spectroscopy applications with its potentially higher brightness than current scintillators such as CsI:Tl and NaI:Tl, fast emission (~3 ¿s and ~40 ¿s), negligible afterglow (<0.05% at 6 ms), above-average density (>5.2 g/cm), and light emission in the visible range (610-650 nm). This paper will describe our fabrication methods and report our preliminary performance characterization results.
The use of monoclonal antibodies for the antigenic analysis of influenza A viruses. (1985)

Monoclonal antibodies have been found to provide useful additional information for the antigenic analysis of influenza A viruses of the H3N2 and H1N1 subtypes. They have been particularly useful in the interpandemic period when multiple variants circulate concurrently.Apparently heterogeneous isolates can be placed in fairly clear-cut groups on the basis of their reactivity with certain monoclonal antibody preparations. It is thought likely that variants reacting with the least number of monoclones are the most different antigenically from the fully reactive strains.
A 56-to-65GHz Injection-Locked Frequency Tripler with Quadrature Outputs in 90nm CMOS (2008)

This paper describes a 60 GHz-band (output) frequency tripler with I/Q outputs implemented in a production 90 nm CMOS technology . Differential quadrature outputs with high phase accuracy and low amplitude error are required for single-sideband frequency translation. Regenerative peaking reduces power consumption and optimizes the response of the 50 Omega output buffer. The tripler can relax requirements on the design of the PLL synthesizer, as a fundamental (i.e., 60GHz) VCO and high-speed dividers, which may consume more power and compromise performance, are not required. It should be noted that the tripler operating frequency can be selected to fit the desired transceiver architecture and frequency plan.
Acute Hepatitis C in a Contemporary US Cohort: Modes of Acquisition and Factors Influencing Viral Clearance (2007)

High-risk sexual or iatrogenic exposures may be important contemporary risk factors for HCV infection. The spontaneous viral clearance rate (18%) in this contemporary study was similar to that reported for past studies of transfusion-associated HCV infection. Women were more likely to clear acute HCV infection than men.
System-Architectures for Sensor Networks Issues, Alternatives, and Directions (2002)

Our goal is to identify the key architectural and design issues related to Sensor Networks (SNs), evaluate the proposed solutions, and to outline the most challenging research directions. The evaluation has three scopes- individual components on SN nodes (processor, communication, storage, sensors, actuators, and power supply), node level and networked system level. The special emphasis is placed on architecture and system software, and on new challenges related to the usage of new types of components in networked systems. The evaluation is guided by anticipated technology trends and both current and future applications. The main conclusion of the analysis is that the architectural and synthesis emphasis will be shifted from computation and to some extent communication components to sensors and actuators.