gebhart/patrepeval huggingface dataset:
Detection and compensation of torque harmonics in drive with induction motor and gear (2008)

In many solutions of drives, the torque transmission systems are used for torque converting from the motor shaft to the load. Properties of torque transmission system are a reason of mechanical vibration occurring in drive system. Analysis of drive vibration, usually measured by the accelerometer, makes it possible to create diagnostic system for detection of mechanical faults of drive. In many applications, an introducing of vibrations to drive system is undesirable. Mechanical vibrations of drive can be reduced by generation of appropriate torque components in electric machine. Proper compensation of mechanical vibration requires information about amplitudes and frequencies of vibration harmonics. In drive system with gear, the reduction of mechanical vibration and early detection of gear damages require information about mutual position of toothed wheel and the torque transmitted by gear. Analysis of state variables of induction motor makes it possible to indicate the instants of toothed wheels meshing. It makes it possible to eliminate both: vibration and optical sensors in systems of detection of gear damages and compensation of mechanical vibration. In this paper a method of sensorless detection of torque ripples, caused by gear transmission, is proposed. Presented method can be use in systems for early detection of gear damages and for active compensation of mechanical vibration. The results of simulation and experimental researches on proposed detection and compensation method are presented in the paper. The experiments were provided for a drive with 10kW induction motor with gear and for a high-speed train drive with gear and 1.2MW asynchronous motor.
Isolation of Rat Bone Marrow Stem Cells (2006)

Stem cell research has become an important field of study for molecular, cellular, and clinical biology as well as pharmaco-toxicology. Indeed, stem cells have a strong proliferative and unlimited self-renewal potential and are multipotent. In vivo as well as in vitro studies have confirmed the differentiation of adult bone marrow stem cells into muscle cells, adipocytes, cardiomyocytes, neuroectodermal cells, osteoblasts, chondroblasts, and so on. Recently, it has been shown that, under appropriate culture conditions, adult bone marrow stem cells may also differentiate into hepatocyte-like cells. Because of their extensive proliferative capacity and pluripotency, adult bone marrow stem cells could serve in the future as an unlimited source of hepatocytes for pharmaco-toxicological research and testing. We describe a protocol for isolation of mononuclear cells from adult rat bone marrow.
MicroRNAs in prostate cancer (2013)

MicroRNAs (miRNAs) are made up of -22 endogenous nucleotides and are small, noncoding RNAs that are important regulators of gene expression at the posttranscriptional level by degrading or repressing target miRNAs. miRNA expression profiles can be used for the detection of diagnostic and prognostic markers for various cancers. Also, alterations of miRNAs in cancer tissues have been associated with clinicopathological parameters. Along with circulating miRNAs, tissue miRNAs have shown promise as markers that can predict cancer recurrence and/or the potential for survival of cancer patients. Additionally, some miRNAs have therapeutic potential. In this review, we discuss and assess the usefulness of tissue-derived and circulating miRNAs for the diagnosis and prognosis of prostate cancer.
Dosimetric analysis of ruthenium-106 ophthalmic applicators for the treatment of retinoblastoma and ocular melanoma (2000)

Treatment of retinoblastoma dates back to the first reported (and unsuccessful) enucleation in 1767. Over 200 years later, enucleation is a far more humane and common procedure, yet brachytherapy is often the treatment of choice for small to medium-size tumors offering both function-preservation and good survival-rates (usually employing Co/sup 60/, Ir/sup 192/ and I/sup 125/). Use of Ru/sup 106//Rh/sup 106/(T/sub 1/2 /=1 y; a/spl tilde/Emax=3.54 MeV) for ocular applicators offers the dosimetric advantage of more rapid dose fall-off and reduced risk of cataracts and optic nerve injury. Ru/sup 106//Rh/sup 106/ plaques are therefore suitable for treatment of small tumors, especially in pediatric patients where radiation sensitivity of retinoblastoma is well documented. The authors present dose measurements and Monte-Carlo simulation of the dose distribution for a 14 mm applicator, and compare them with I/sup 125/ plaques. Depth dose and transverse profile distributions were calculated via numerical integration. Beta dose as a function of radial distance from a point source was obtained from the beta dose kernels of Simpkin and Mackie, which are applicable to several beta isotopes and energies. The authors assumed the source was uniformly distributed over the applicator-surface, which was divided into approximately 10/sup 6/ segments. Numerical integration of the kernel was performed over a 1 mm dose-grid. Measurements were performed using both Scanditronix 'stereotactic-field diode' in water phantom, and radiochromic film in water equivalent phantom. Manufacturer specifications are based on measurements with a relatively large detector, and thus have a /spl plusmn/30% uncertainty. In contrast, both measurements as well as the Monte Carlo simulation are in good agreement, and clinically usable.
Mathematical Methods for Physics and Engineering (2002)

The new edition of this highly acclaimed textbook contains several major additions, including more than four hundred new exercises (with hints and answers). To match the mathematical preparation of current senior college and university entrants, the authors have included a preliminary chapter covering areas such as polynomial equations, trigonometric identities, coordinate geometry, partial fractions, binomial expansions, induction, and the proof of necessary and sufficient conditions. Elsewhere, matrix decompositions, nearly-singular matrices and non-square sets of linear equations are treated in detail. The presentation of probability has been reorganised and greatly extended, and includes all physically important distributions. New topics covered in a separate statistics chapter include estimator efficiency, distributions of samples, t- and F-tests for comparing means and variances, applications of the chi-squared distribution, and maximum likelihood and least-squares fitting. In other chapters the following topics have been added: linear recurrence relations, curvature, envelopes, curve-sketching, and more refined numerical methods.
Thiol containing antioxidant drugs and the human immune system. (1988)

The over production of toxic oxygen species (TOS) by the phagocytic cells involved in inflammatory processes plays a crucial role in generating the immune defects which characterize both infections and neoplastic diseases. Since the thiol containing drugs, and N-acetylcysteine possess a high capacity for scavenging and inhibiting TOS, the question of whether these substances are able to protect, in vivo as well as in vitro, the function of lymphocytes isolated from the peripheral blood in patients suffering from chronic pulmonary diseases (CPD) was investigated. The lymphocytes isolated from healthy donors as well as those from CPD patients exposed in vitro to TOS showed a reduced viability and an impairment of functions in: (a) the ability to express HLA Class II and TAC antigens and (b) the capacity to stimulate and proliferate in allogenic (MLR) and autologous mixed lymphocyte reactions (AMLR). The presence of NAC or CAT blocked this toxicity. Cells isolated from healthy donors and patients following treatment with NAC were less sensitive to the in vitro toxicity of TOS.
Determination of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Commercial Pentachlorophenols by Combined Gas Chromatography-Mass Spectrometry (1976)

Samples of commercial pentachlorophenol (PCP) and its sodium salt (PCP-Na) were examined for the presence of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), using a rapid, highly specific method of analysis. Phenolic compounds are removed by alkaline extraction, and the neutral components are fractionated on an alumina minicolumn. After gas chromatographic separation, individual PCDDs and PCDFs are detected by mass fragmentography and their presence is confirmed by complete mass spectral analysis. While some samples had only low amounts of PCDDs and PCDFs, others contained much higher amounts of these components. PCP-Na samples showed the unexpected presence of a tetrachlorodibenzo-p-dioxin. Re-analysis of PCP and PCP-Na samples with high PCDD contents on a high-resolution glass capillary column showed the presence of 3 hexa- and the 2 heptachlorodibenzo-p-dioxins with nearly constant isomeric ratios.
Distributed Beamforming in the Presence of Adversaries (2020)

In this article, we investigate the problem of distributed coherent beamforming in wireless networks where multiple distributed transmitters adjust the phases of their signals to form a directional and targeted communication link to a client receiver. The quality-of-service (QoS) and security are key components of robust and secure wireless networks. Although the security can be improved by exploiting information about potential adversaries, such information may not be available in practical networks since the adversaries are often passive. Therefore, we introduce transmission strategies which not only send a confidential message by forming a beam towards the client but also broadcast interference with the aim of obfuscating adversaries without having any information about them. Since the interference may degrade the QoS of the client, the transmitters radiating the interference steer a null to the client to alleviate the interference. We develop two algorithms. The first assumes that a subset of the transmitters send the confidential message in the direction of the client via coherent beamforming. Then, the others transmit interference while creating a null towards the client. In the second, each node transmits both the confidential message and interference simultaneously. Two different client feedback scenarios are considered, two-bit and rich feedback. Both of the proposed algorithms can be performed in a fully distributed manner without any knowledge about potential adversaries. Numerical simulations in both microwave and low-very high frequency (low-VHF) bands validate the effectiveness of the proposed schemes.
The ADP-ribosylation Factor (ARF)-related GTPase ARF-related Protein Binds to the ARF-specific Guanine Nucleotide Exchange Factor Cytohesin and Inhibits the ARF-dependent Activation of Phospholipase D (1999)

ADP-ribosylation factor-related protein (ARP) is a membrane-associated GTPase with remote similarity to the family of ADP-ribosylation factors (ARF). In a yeast two-hybrid screen designed to identify proteins interacting with ARP, we isolated a partial cDNA of the ARF-specific guanine nucleotide exchange factor mSec7-1/cytohesin encoding its N terminus and most of the Sec7 domain (codons 1-200). ARP and ARP-Q79L (GTPase-negative ARP) exhibited a higher affinity to mSec7-1-(1-200) than ARP-T31N (nucleotide exchange-defective ARP) in the two-hybrid assay. Similarly, full-length [35S]mSec7-1/cytohesin was specifically adsorbed to glutathione-Sepharose loaded with glutathione S-transferase (GST)-ARP-Q79L, GST-ARP, or GST-ARP-T31N, the latter exhibiting the lowest binding affinity. Overexpression of ARP-Q79L, but not of ARP-T31N, in COS-7 cells reduced the fluorescence from co-expressed green fluorescent protein fused with mSec7-1/cytohesin or mSec7-2/ARNO in plasma membranes as detected by deconvolution microscopy. Recombinant ARP and ARP-Q79L, but not ARP-T31N, inhibited the phospholipase D (PLD) activity stimulated by mSec7-2/ARNO and ARF in a system of isolated membranes. Furthermore, transfection of HEK-293 cells with ARP or ARP-Q79L, but not ARP-T31N, inhibited the muscarinic acetylcholine receptor-3 induced PLD stimulation and translocation of ARF from cytosol to membranes. These data suggest that the GTP-bound form of ARP specifically binds mSec7-1/cytohesin, and that ARP may be involved in a pathway inhibiting the ARF-controlled activity of PLD.
Unsupervised Learning in Recurrent Neural Networks (2001)

. While much work has been done on unsupervised learning in feedforward neural network architectures, its potential with (theoretically more powerful) recurrent networks and time-varying inputs has rarely been explored. Here we train Long Short-Term Memory (LSTM) recurrent networks to maximize two information-theoretic objectives for unsupervised learning: Binary Information Gain Optimization (BINGO) and Nonparametric Entropy Optimization (NEO). LSTM learns to discriminate di erent types of temporal sequences and group them according to a variety of features. 1 Introduction Unsupervised detection of input regularities is a major topic of research on feedforward neural networks (FFNs), e.g., [1-33]. Most of these methods derive from information-theoretic objectives, such as maximizing the amount of preserved information about the input data at the network&apos;s output. Typical real-world inputs, however, are not static but sequential, full of temporally extended features, statist...
Fibrous Histiocytoma of the Paranasal Sinuses: Report of a Case (1973)

Histiocytic tumor frequently arise in the head and neck but, as far as we know, this is the first report of a fibrous histiocytoma involving the paranasal sinuses. Although asymptomatic, the patient was seen for evaluation of a rapidly enlarging mass in the left nasal cavity. Roentgenograms of the paranasal sinuses showed evidence of a destructive mass involving the left antrum, ethmoid sinus, and medial wall of the left orbit. Treatment consisted of irradiation and excision.
A Wireless Sensor Network for Smart Roadbeds and Intelligent Transportation Systems (2000)

Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
Launch pad lightning protection effectiveness (1991)

Using the striking distance theory that lightning leaders will strike the nearest grounded point on their last jump to earth corresponding to the striking distance, the probability of striking a point on a structure in the presence of other points can be estimated. The lightning strokes are divided into deciles having an average peak current and striking distance. The striking distances are used as radii from the points to generate windows of approach through which the leader must pass to reach a designated point. The projections of the windows on a horizontal plane as they are rotated through all possible angles of approach define an area that can be multiplied by the decile stroke density to arrive at the probability of strokes with the window average striking distance. The sum of all decile probabilities gives the cumulative probability for all strokes. The techniques can be applied to NASA-Kennedy launch pad structures to estimate the lightning protection effectiveness for the crane, gaseous oxygen vent arm, and other points. Streamers from sharp points on the structure provide protection for surfaces having large radii of curvature. The effects of nearby structures can also be estimated.
OWeB: A Framework for Offline Web Browsing (2006)

Internet browsing is highly dependent on the real-time network availability and speed. This becomes a significant constraint when browsing over slow and intermittent networks. In this paper, we describe a readily deployable system designed for Web browsing over slow, intermittent networks - OWeB, that is minimally dependent on the real-time network availability and requires no changes on the part of the Web servers. The system subscribes to really simple syndication (RSS) feeds from Web servers and pre-fetches all new content as specified in the feed. Since the RSS feeds are published by Web servers they give accurate information about the new and updated content. Efficiency of network usage is achieved by employing standard techniques to handle intermittent networks, and near-complete utilization of all downloaded content results in better resilience in case of interrupted data downloads. We observed a co-relation between the items in an RSS feed and the homepage of the corresponding Web site (i.e.) the feed items essentially define the content section of the homepage. As part of OWeB, we developed an algorithm for automatically extracting the template of home pages and then locally stitching the feed items into the template. This results in Web sites being up-to-date and fully available offline and bandwidth savings, as we only need to download the RSS feed to construct the homepage
An multiuser Undo/Redo method for replicated collaborative modeling systems (2009)

Undo/Redo can help rolling the whole system back to some previous state. However, many group Undo/Redo researches are based on co-edit system of text object. This paper firstly addresses the Undo/Redo in 3D collaborative solid modeling system. After analysis of the existing Undo/Redo method, this article proposed a multiuser Undo/Redo method in replicated collaborative modeling system. The implementation of the Undo/Redo operation in both local site and remote site is described in detail respectively. In our method, the user's intention can be preserved. The preservation is based on dependency relationship among users at different sites. The proposed approach has been tested in a prototype system with case study.
Determination of mRNA levels of cholesterol biosynthesis enzymes and LDL receptor using ribonuclease protection assay. (1995)

We designed a rapid method for determining mRNA content of cholesterol biosynthesis enzymes and LDL receptor (LDLR) using a ribonuclease protection assay (RPA). 32P-labeled cRNA fragments for genes of human LDLR and the enzymes HMG-CoA synthase (HMGS), HMG-CoA reductase (HMGR), mevalonate kinase (MK), farnesyl pyrophosphate synthase (FPPS), and squalene synthase (SQS) were prepared by in vitro transcription. Total RNA prepared from HepG2 cells was hybridized with the cRNA probe and the hybridized mRNA was determined under protection from RNase digestion. Probe content used in this assay was excess in determining the desired mRNA in total RNA, and surplus probes were completely digested using RNase under standard conditions. When cells were cultured in DMEM supplemented with 10% fetal calf serum (FCS), mRNA levels of FPPS, SQS, and LDLR were about 4- to 7-fold higher than those of HMGS, HMGR, and MK. On incubation with DMEM supplemented with 10% lipoprotein-deficient serum (LPDS) for 8 h, all messenger RNA levels increased 1.5- to 3.5-fold. In addition, when the HMG-CoA reductase inhibitor compactin was added to 10% LPDS-DMEM, these levels increased even further and the change in mRNA level seemed to differ between the enzymes and LDLR. From these results, we conclude that RPA is a useful method for determining the very small amount of mRNA level of cholesterol biosynthesis enzymes and LDLR in the cell.
RCS of human being physiological movements in the 1&#x2013;10GHz bandwidth: Theory, simulation and measurements (2008)

Analysis of radar backscattering of moving objects is usually performed by Fourier spectral analysis, allowing the discrimination of signals located at different Doppler frequencies. This approach applies in the hypotheses that, during the observation time, the targets move with uniform radial velocity and their range changes by several wavelengths. This is not always verified, e.g. for physiological internal movements when observed at low frequencies. This paper presents a theoretical model to represent the radar backscattering of targets having sub-wavelength motion. Alternatives to the Fourier approach are discussed, matching the model with experimental data.
A New Degradation Mode for Heterojunction Bipolar Transistors Under Reverse-Bias Stress (2006)

A new degradation behavior for heterojunction bipolar transistors under reverse base-emitter junction stress is presented and discussed. Hot carrier injection triggered a correlated decrease of both the base and collector-currents in the first stress-time steps. Both experiments and simulations show that this degradation is linked to the stress-induced suppression of initially present excess ideal components for both currents
Unconventional Nanopatterning Techniques and Applications (2008)

Patterning or lithography is at the core of modern science and technology and cuts across all disciplines. With the emergence of nanotechnology, conventional methods based on electron beam lithography and extreme ultraviolet photolithography have become prohibitively expensive. As a result, a number of simple and unconventional methods have been introduced, beginning first with research demonstrations in the mid 1990s. This book focuses on these unconventional patterning techniques and their applications to optics, organic devices, electronic devices, biological devices, and fluidics.
Synthesis and Biological Evaluation of 2,4,6‐Trihydroxychalcone Derivatives as Novel Protein Tyrosine Phosphatase 1B Inhibitors (2012)

A series of 2,4,6-trihydroxychalcone derivatives were synthesized and identified as reversible and competitive protein tyrosine phosphatase (PTP) 1B inhibitors with IC₅₀ values in the micromolar range. Compound 4a had the greatest in vitro inhibition activity against PTP1B (IC₅₀= 0.27 ± 0.01 μM) and the best selectivity (6.9-fold) for PTP1B relative to T-cell protein tyrosine phosphatases. The compounds identified herein provide a foundation on which to design specific inhibitors of PTP1B and other PTPs.
Posttraumatic skeletal muscle proteolysis: The role of the hormonal environment (1989)

To investigate the role of hormones as mediators of net skeletal muscle proteolysis following injury, healthy normal male volunteers received a continuous 76-hour infusion of the 3 "stress" hormones: hydrocortisone, glucagon, and epinephrine. As a control, each subject received a saline infusion during another 4-day period. Ten paired studies were conducted. Diets were constant and matched on both occasions. Triple hormone infusion achieved hormone concentrations similar to those seen following mild-moderate injury. After 72 hours of infusion, skeletal muscle intracellular glutamine concentrations were lower in the hormone studies than in the control group (N = 4). Free amino acid concentrations in arterial whole blood and forearm amino acid efflux were little affected by hormonal infusion. Thus, alteration of the hormonal environment by the triple hormone infusion was not a sufficient stimulus to induce all of the changes in skeletal muscle proteolysis observed in critical illness. Since studies utilizing neurohormonal blockade have shown diminished net muscle proteolysis, the stress hormones appear to be necessary but not sufficient for the protein catabolic response to injury.
Predicting liver SBRT eligibility and plan quality for VMAT and 4π plans (2017)

In addition to evaluating plan quality, KBP is useful to automatically determine the patient eligibility for liver SBRT and quantify the dosimetric gains from non-coplanar 4π plans. The two here analyzed dose prediction methods performed more accurately for the 4π plans than VMAT.
Properties of epitaxial GaN on refractory metal substrates (2007)

The authors demonstrate here that GaN films with good surface morphology and structural, optical, and electronic properties can be grown on metallic titanium carbide substrates. X-ray rocking curve and Raman scattering measurements confirmed the high crystalline quality of the wurtzite structure film. Variable temperature photoluminescence measurements of sharp and intense emission lines provided insights into the nature of the recombination processes, the carrier background type, and the carrier concentration. The high quality of the interface and substrate Ohmic contacts was verified. The ability to grow high-quality films on metallic substrates provides the means for advanced vertical and high-power and/or high-temperature device fabrication.