gebhart/patrepeval huggingface dataset:
A Bayesian Optimisation Procedure for Estimating Optimal Trajectories in Electromagnetic Compliance Testing (2020)

The need for accurate physical measurements is omnipresent in both scientific and engineering applications. Such measurements can be used to explore and characterize the behavior of a system over the parameters of interest. These procedures are often very costly and time-consuming, requiring many measurements or samples. Therefore, a suitable data collection strategy can be used to reduce the cost of acquiring the required samples. One important consideration which often surfaces in physical experiments, like near-field measurements for electromagnetic compliance testing, is the total path length between consecutively visited samples by the measurement probe, as the time needed to travel along this path is often a limiting factor. A line-based sampling strategy optimizes the sample locations in order to reduce the overall path length while achieving the intended goal. Previous research on line-based sampling techniques solely focused on exploring the measurement space. None of these techniques considered the actual measurements themselves despite these values hold the potential to identify interesting regions in the parameter space, such as an optimum, quickly during the sampling process. In this paper, we extend Bayesian optimization, a point-based optimization technique into a line-based setting. The proposed algorithm is assessed using an artificial example and an electromagnetic compatibility use-case. The results show that our line-based technique is able to find the optimum using a significantly shorter total path length compared to the point-based approach.
A Genetic Algorithm Based Multi-Objective Thermal Design Optimization of Liquid Cooled Offset Strip Fin Heat Sinks (2009)

A genetic algorithm based multi-objective thermal design optimization of liquid cooled offset strip fin heat sinks is presented. Using water and HFE-7000 as coolants, Matlab’s genetic algorithm and direct search toolbox functions were utilized to determine the optimal thermal design of the offset strip fin heat sink based on the total thermal resistance and power consumption under constant pressure drop. For a relatively small fin length, the total thermal resistance decreases with increasing fin length and aspect ratio α. For larger fin lengths, the total thermal resistance increases with increasing fin length whereas the power consumption continuously increases with increasing fin length and aspect ratio α for a given pressure drop. A plot of the Pareto front indicates a trade-off between the total thermal resistance and pumping power consumption.
Intercomparison of soil moisture retrieved from GNSS-R and passive L-band radiometry at the Valencia Anchor Station (2016)

In this paper, the SOMOSTA (Soil Moisture Monitoring Station) experiment on soil moisture monitoring by Global Navigation Satellite System Reflected signals(GNSS-R) at the Valencia Anchor Station is introduced.
Characterization and Modeling of the Operating Curves of Membrane Microseparators (2017)

The membrane microseparator is a milliliter-scale flow chemistry module that continuously separates a biphasic flow through a PTFE microporous membrane. It has found a wide range of applications in the continuous manufacturing of active pharmaceutical ingredients and fine chemicals, especially those involving multiple synthetic steps. Yet, the accurate prediction and control of the pressure balance needed for successful phase separations is technically challenging. In this article, we present systematic modeling of the operating ranges of the membrane microseparator. We characterize the retention and breakthrough phenomena of the device and develop two new analytic models for retention and breakthrough by taking into consideration the tortuosity factor and pore size distribution. The new models are shown to be better predictors of the experimental results than the original theoretical models based on the simple Young–Laplace equation and the straight-channel Hagen–Poiseuille equation.
ChemInform Abstract: Extended Conjugation in Stilbenylsquaraines. (1999)

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.
Polymerization of vinyl monomer using inorganic material by plasma exposure. (1987)

アルゴンまたは H2Oプラズマを照射した無機基材 (シリカゲル, ヒドロキシアパタイト, 窒化ケイ素, および, 炭化ケイ素)を用いたビニルモノマーの重合を行ない, プラズマに接した固体表面上の反応を検討した。H2Oプラズマを照射したシリカゲルは, メタクリル酸メチルとスチレンのそれぞれのポリマーを高重合率で生成した。一方, アルゴンプラズマを照射したシリカゲルは, それほど高い重合活性を示さなかった。この重合反応の速度はモノマー濃度の1.5次に, また仕込みシリカゲル量の 0.5次に依存した。また, この重合系によるメタクリル酸ズチル (M1)とスチレン (M2)との共重合におけるモノマー反応性比は, r1=0.55, r2=O.56であった。これらの結果から, この重合系ばおける重合反応は, プラズマ中の電離によってつくられた電子を取り込んだ無機固体表面上から, 固体表面に吸着されたモノマーへ電子が移動することによって生成したラジカル種による反応と推定された。
Multichannel Capillary Electrophoresis Microdevice and Instrumentation for in Situ Planetary Analysis of Organic Molecules and Biomarkers (2010)

The Multichannel Mars Organic Analyzer (McMOA), a portable instrument for the sensitive microchip capillary electrophoresis (CE) analysis of organic compounds such as amino acid biomarkers and polycyclic aromatic hydrocarbons (PAHs), is developed. The instrument uses a four-layer microchip, containing eight CE analysis systems integrated with a microfluidic network for autonomous fluidic processing. The McMOA has improved optical components that integrate 405 nm laser excitation with a linear-scanning optical system capable of multichannel real-time fluorescence spectroscopic analysis. The instrumental limit of detection is 6 pM (glycine). Microfluidic programs are executed to perform the automated sequential analysis of an amine-containing sample in each channel as well as eight consecutive analyses of alternating samples on the same channel, demonstrating less than 1% cross-contamination. The McMOA is used to identify the unique fluorescence spectra of nine components in a PAH standard and then applied to the analysis of a sediment sample from Lake Erie. The presence of benzo[a]pyrene and perylene in this sample is confirmed, and a peak coeluting with anthanthrene is disqualified based on spectral analysis. The McMOA exploits lab-on-a-chip technologies to fully integrate complex autonomous operations demonstrating the facile engineering of microchip-CE platforms for the analysis of a wide variety of organic compounds in planetary exploration.
Heterogeneous LTE/802.11a mobile relays for data rate enhancement and energy-efficiency in high speed trains (2012)

Performance enhancements of cellular networks for passengers in high speed railway systems are investigated. Relays placed on top of each train car are proposed. These relays communicate with the cellular base station (BS) over Long Term Evolution (LTE) long range links and with the mobile terminals (MTs) inside the train cars using IEEE 802.11a short range links. Scenarios with unicasting and multicasting from the BS are studied, both in the presence and absence of the relays. In addition, LTE resource allocation is taken into account. The presence of the relays is shown to lead to significant enhancements in the effective data rates of the MTs, in addition to leading to huge savings in the energy consumption from the batteries of the MTs.
Nonlinear dynamic analyses of single hippocampal neurons before and after long-term potentiation (2010)

Long-term potentiation (LTP) has long been considered an important phenomenon involved in learning and memory. However, the current literature lacks systematical analyses of single neuron dynamics before and after LTP induction. In this report, we applied an up to 3rd-order Volterra kernel to analyze the dynamics of single hippocampal neurons before and after LTP induction. Broadband Poisson random impulse trains with a 2 Hz mean frequency, which included physiologically plausible patterns, were applied to stimulate CA1 pyramidal neurons through Schaffer collateral before and after LTP induction. Corresponding somatic sub-threshold excitatory postsynaptic potentials (EPSPs) were recorded from CA1 neurons using whole-cell patch-clamp recording. The result suggests that LTP increases linear responses and depresses nonlinear responses. The phenomenon can be explained with both presynaptic and postsynaptic hypotheses. Further comparisons of voltage-clamp and current-clamp recordings are needed to distinguish the changes of dynamics in presynaptic and/or postsynaptic mechanisms.
Propagating acoustic waves on a culture substrate regulate the directional collective cell migration (2021)

Collective cell migration plays a critical role in physiological and pathological processes such as development, wound healing, and metastasis. Numerous studies have demonstrated how various types of chemical, mechanical, and electrical cues dictate the collective migratory behaviors of cells. Although an acoustic cue can be advantageous because of its noninvasiveness and biocompatibility, cell migration in response to acoustic stimulation remains poorly understood. In this study, we developed a device that is able to apply surface acoustic waves to a cell culture substrate and investigated the effect of propagating acoustic waves on collective cell migration. The migration distance estimated at various wave intensities revealed that unidirectional cell migration was enhanced at a critical wave intensity and that it was suppressed as the intensity was further increased. The increased migration might be attributable to cell orientation alignment along the direction of the propagating wave, as characterized by nucleus shape. Thicker actin bundles indicative of a high traction force were observed in cells subjected to propagating acoustic waves at the critical intensity. Our device and technique can be useful for regulating cellular functions associated with cell migration.
Photoluminescence of GaAs quantum wells grown by molecular beam epitaxy with growth interruptions (1991)

Single GaAs/AlxGa1−xAs quantum wells, grown by molecular beam epitaxy with growth interruptions at each interface, are investigated using low-temperature photoluminescence. The three clearly resolved photoluminescence peaks are attributed to discrete monolayer thicknesses of the well. The splitting of the peaks is investigated for several hundred points across a 2 in. wafer. The negligible variation of the peak splitting is consistent with abrupt interfaces in the growth direction, atomically smooth interfaces, and discrete thicknesses of the quantum well with changes of only integer multiples of monolayers.
Title to be Announced (2017)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text M. Loncar, "Title to be Announced," in Advanced Photonics 2017 (IPR, NOMA, Sensors, Networks, SPPCom, PS), OSA Technical Digest (online) (Optica Publishing Group, 2017), paper NoM3C.3. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Abstract 53: Noninvasive Detection of Inflammation of Murine Stasis Deep Venous Thrombosis (DVT) Using Integrated 18F-FDG PET/CT (2013)

Background Noninvasive imaging of inflammation in DVT could offer new insights into the resolution of deep venous thrombosis (DVT) in living subjects. While a few clinical studies have reported incidental uptake of 18F-FDG PET in a subgroup of DVTs, limited information exists regarding the cellular mechanisms and time dependence of FDG uptake in DVT. Here we investigated whether FDG-PET could enhance murine stasis-induced DVT in acute to subacute DVT, and assessed the inflammatory cell infiltrate within DVT. Methods C57BL/6 mice (n=6) underwent ligation of the jugular vein to induce stasis DVT. At DVT timepoints from day 2 to day 7, 18F-FDG PET (25-35 μCi/g) and contrast CT venography was performed. After PET/CT imaging, animals were sacrificed and veins were resected. Gamma-counting and histological analyses of thrombus neutrophils and macrophages were then performed. Results PET/CT images demonstrated the FDG signal accumulated in thrombosed jugular veins in acute DVT, and significantly more than in contra-lateral sham veins (SUV = 1.27±0.11 vs. 0.79±0.069, SUVmax = 1.45±0.090 vs. 1.02±0.056, p&lt;0.05, respectively). The %IDGT was significantly higher in thrombosed veins (7.21±0.17% vs. 1.54±0.47% sham vein, p&lt;0.05). The % positive area of neutrophil in thrombus was 25 times higher than macrophages (14.1±2.9% vs. 0.58±0.091%, p&lt;0.0001) in earlier-stage (day2-4) DVT. Conclusions Noninvasive FDG-PET/CT can visualize inflammation in experimental DVT. Thrombus neutrophils appear to be the cellular source underlying accumulated FDG signal in earlier-stage DVT. FDG-PET may enable assessment of thrombus age and provide new insights into the resolution of DVT.
New generation of outer-membrane vesicles-based meningococcal vaccines (2009)

With the availability of H. influenzae type B vaccine, meningococcal serogroup A, C, W-135 and Y vaccines, and pneumococcal conjugate vaccine, serogroup B meningococci will remain the major cause of bacterial meningitis. The use
Thermal boundary resistance of copper phthalocyanine-metal interface (2011)

Systems containing interfaces between dissimilar materials can exhibit lower thermal conductivity than their pure constituents, with important implications for thermal management and thermoelectric energy conversion. However, the heat transfer processes at such interfaces, in particular those between organic and inorganic materials, remain for the most part uncharacterized. We use vacuum thermal evaporation to grow archetypal multilayer thin films of copper phthalocyanine (CuPc) and Ag or Al, and measure their thermal conductivity as a function of interface density. We observe large thermal boundary resistance values (7.8×10−8 m2 K/W for CuPc/Ag and 2.0×10−8 m2 K/W for CuPc/Al), attributable to acoustic mismatch, heat carrier mismatch, and weak bonding.
Mbit/second communication through a rock bolt using ultrasound (2017)

This paper presents a digital communication system based on Orthogonal Frequency Division Multiplexing (OFDM) and MHz-range ultrasound, for transmission of data through solid materials and liquids. The system is tested on experiments using a off-the-shelf ultrasound transducers with a center frequency of 3.5 MHz as transmitter and receiver, respectively. The propagation medium in the experiment was a 1 m long section of an epoxy coated steel rock bolt. The results show that data rates in excess of 1 Mbit/second is attainable, using readily available hardware and software.
Emulsion Copolymerization of Small-Particle-Size, High-Molecular-Weight Poly(alkylaminoalkyl methacrylate-co-alkyl methacrylate) Latexes (1992)

High-molecular-weight compositionally-homogeneous viscoelastic poly(alkylaminoalkyl methacrylate-co-alkyl methacrylate)'s (e.g., 25:75 (molar ratio) poly(t-butylaminoethyl methacrylate-co-isobutyl methacrylate)) were prepared by semi-continuous emulsion copolymerization using persulfate ion initiator. The results were evaluated in terms of the expected proportionalities of the rate of polymerization to the number of polymer particles and the molecular weight to the number of particles relative to the rate of radical generation. The rates of polymerization were determined gravimetrically or by gas chromatography. The average particle sizes were inordinately small (18-86 nm), and the molecular weights were typically 106 daltons or greater. The small particle sizes were first attributed to the high emulsifier concentration and excellent stability of the latexes, and later to the failure of the latex particles containing only 8-11 polymer molecules to grow further. The high molecular weights were attributed to the large number of particles. The copolymer ratio, molecular weight, solubility, and viscoelastic properties in solution were determined, and the effect of the type of initiator (water-soluble or oil-soluble), polymerization temperature, emulsifier type and concentration, and monomer feed (emulsion or neat monomer) were investigated. The properties of laboratory copolymers were compared with those prepared in larger reactors. Generally, the viscoelastic properties were satisfactory. Analysis of the homogeneity of the copolymers by 13C nuclear magnetic resonance spectrometry, Fourier-Transform infrared spectroscopy, differential scanning calorimetry, and transmission electron microscopy gave conflicting results.
PREMIER Turbo: Probabilistic error-correction using Markov inference in errored reads using the turbo principle (2013)

We present a probabilistic algorithm for error correction for high throughput DNA sequencing data. Our approach leverages our prior algorithm PREMIER where sequencer outputs are modeled as independent realizations of a Hidden Markov Model (HMM) and the problem of error correction is posed as one of maximum likelihood sequence detection over this HMM. In this work we propose an algorithm called PREMIER Turbo which can be viewed as an iterative application of the PREMIER approach. Specifically, we apply error correction in both the forward and the backward directions in a given read. We also present a heuristic inspired by turbo-equalization that incorporates the prior belief on a nucleotide position returned by the Baum-Welch algorithm into the error correction steps. Our approach significantly improves the correction of nucleotides in the beginning of the read. Our test results on the real C. elegans and E. coli datasets show that PREMIER Turbo achieves a significantly better error correction performance than the other competing methods.
Multi-Channel Access Solutions for 5G New Radio (2019)

Multi-channel access is a family of multi-service radio resource management solutions that enable a user equipment to aggregate radio resources from multiple sources. The objective is multi-fold: throughput enhancement through access to a larger bandwidth tailored for enhanced mobile broadband, reliability improvement by increasing the diversity order and/or coordinated transmission/reception tailored for ultra-reliable low latency communication service classes, as well as flexibility and load balancing improvement by decoupling the downlink and the uplink access points, for both service classes. This paper presents several multi-channel access solutions for 5G New Radio multi-service scenarios. In particular, throughput enhancement and latency reduction concepts like multi-connectivity, carrier aggregation, downlink-uplink decoupled access and coordinated multi-point connectivity are discussed. Moreover, novel design solutions exploiting these concepts are proposed. Numerical evaluation of the introduced solutions indicates significant performance gains over state-of-the-art schemes; for example, our proposed component carrier selection mechanism leads to a median throughput gain of up to 100% by means of an implicit load balance. Therefore, the proposed multi-channel access solutions have the potential to be key multi-service enablers for 5G New Radio.
Erratum: Benelli, R., et al. Aspartate-β-Hydroxylase: A Promising Target to Limit the Local Invasiveness of Colorectal Cancer. Cancers 2020, 12, 971 (2020)

The authors wish to make the following corrections to this paper [...].
MR-guided catheter-based excitation emission optical spectroscopy for in vivo tissue characterization (2008)

Excitation emission spectroscopy (EES) has been used in the past to characterize many different types of tissue. This technique uses multiple excitation wavelengths and samples a complete optical spectrum for each, yielding an excitation-emission matrix (EEM). Upon study of the EEM, it is possible to determine the presence of multiple optical contrast agents since these dyes can have characteristic spectra that can be separated. Here, we demonstrate EES specifically designed for use in conjunction with MR. This EES is applied with an in-suite control setup that permits real-time navigation, utilizing active MR tracking catheters, and providing a platform for MR-guided tissue characterization. The EES system is used in a demonstration experiment to highlight MR imaging, MR guidance in conjunction with a catheter-based optical measurement.
Multi-DOF Ultrasonic Motor Using Single-phase-driven Vibrators (2007)

This paper presents a novel multi-degree-of-freedom ultrasonic actuator. Miniaturization and precise positioning of transfer mechanisms are required, as industrial components are miniaturized. Therefore, many kinds of linear motors and X-Y stages using ultrasonic motors have been developed because of their great characteristics suitable for precise positioning. However, these are still not small enough and the moving range of an object is limited. In order to overcome these problems, we propose a multi-degree-of-freedom actuator using plural single-phase-driven ultrasonic vibrators. This actuator composed of several small-scale vibrators arranged in an array, each of them can generate orthogonal four-direction trust. By combining the thrust generated at each vibrator, we can obtain multiple movements of object. At first in this paper, we propose a driving principle of the actuator. Next, we design and manufacture the vibrator. Finally, we measured vibrating characteristics of vibrator we produced, and driving characteristics of the actuator.
Electrooptic multiwavelength analog-to-digital converters and modulators for optical computing (1991)

An entirely new class of electrooptic analog-to- digital converters (ADCs) and modulators for optical computing and optical signal processing uses is presented. This new device, based on wavelength division multiplexing and utilizing an integrated high speed tunable single-mode channel waveguide Fabry-Perot etalon, can function as a binary or a multivalued ADC or wavelength modulator. The new wavelength modulation is parallel to existing modulation concepts including phase, intensity, polarization or mode conversion modulation, and frequency to space domain modulation(such as in acoustooptic spectrum analyzers.) The advantages of this A/D conversion/modulation concept include external A/D conversion/modulation and multivalued logical capability with self identification, eliminating the need for a sampling optical pulse and electronic comparators needed by other ADCs. Long distance digital optical signal transmission capability, electronically reconfigurable logical weights through initial bias, and high speed operation are also unique features. Additional advantages include its simple structure, high SNR, low BER, high dynamic range, excellent power budge, and thermal stability. The new wavelength modulation concept makes multiwavelength coding possible for use in highly secure optical communication for military and commercial purposes.
BioMEMS for high-throughput handling and microinjection of embryos (2004)

Technologies for handling, sorting, and positioning of embryos are increasingly important in biomedicine. In this paper the status for ongoing projects aimed at developing instrumentation for high-throughput treatment of embryos is reviewed. Techniques for positioning of Drosophila (fruit-fly) embryos in 2-D arrays for use in microinjection experiments are especially focused. A method based on fluidic micro assembly is discussed, and important parameters such as immobilization yield, the number of misplaced embryos, and adhesion force of the embryos are reported. A model for the assembly process is described, and simulation results are in good agreement with adhesion force measurements. A fully automated MEMS based system for fruit-fly embryo injection has recently been demonstrated at Stanford University. The first experiments with double-stranded RNA injection proved successful, and the expected genetic modification of the embryos was observed.