gebhart/patrepeval huggingface dataset:
Syntheses and spectral properties of tropocoronands, a new class of versatile metal-complexing macrocycles derived from aminotropone imines (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses and spectral properties of tropocoronands, a new class of versatile metal-complexing macrocycles derived from aminotropone iminesArie Zask, Nina Gonnella, Koji Nakanishi, Christopher J. Turner, Seichi Imajo, and Tetsuo NozoeCite this: Inorg. Chem. 1986, 25, 19, 3400–3407Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published inissue 1 September 1986https://pubs.acs.org/doi/10.1021/ic00239a017https://doi.org/10.1021/ic00239a017research-articleACS PublicationsRequest reuse permissionsArticle Views220Altmetric-Citations30LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Adhesion control of electric motor coach based on force control using disturbance observer (2000)

In electric motor coaches, when the adhesion force coefficient between rail and driving wheel decreases suddenly, the electric motor coach experiences slip phenomena. We (1999) have already proposed the anti-slip control system based on ordinary zero order disturbance observer, which has a good anti-slip response. In order to realize the more stable anti-slip re-adhesion control in the case of large variation of adhesion force coefficient, this paper proposes a new adhesion control based on the torque feedback control using the first order disturbance observer. In the numerical simulation results in this paper, the proposed anti-slip adhesion control well regulates the driving wheel torque of electric motor coach more stably and more robustly.
Robust Positioning Control Using <i>α</i>-<i>β</i> Stationary Frame Current Controller and Disturbance Torque Hybrid Observer (2017)

In the field of high precision positioning control, the position servo system must be highly robust against disturbance torque. A Permanent Magnet Synchronous Motor (PMSM) has various torque ripple components that degrade control performance. A portion of the torque ripple is caused by the harmonic current. The torque ripple can be suppressed using a highly robust current control system. The remaining torque ripple is defined as the disturbance torque and is compensated for using a Disturbance OBserver (DOB). However, it is very difficult for a DOB to perform the appropriate compensation because it uses a low-pass filter to reduce noise. To obtain highly robust performance, this paper proposes a new position servo system using a disturbance torque hybrid observer and a current control system in the α-β stationary frame. In addition, this paper uses the torque ripple equation instead of a torque ripple table so as to reduce the amount of Digital Signal Processor (DSP) memory. The effectiveness of the proposed position servo system is confirmed using numerical and experimental results.
Don't Forget the Memory (2017)

While academic FPGA architecture exploration tools have become sufficiently advanced to enable a wide variety of explorations and optimizations on soft fabric and outing, support for Block RAM (BRAM) has been very limited. In this paper, we present enhancements to the COFFE transistor sizing tool to facilitate automatic generation and optimization of BRAM for both SRAM and Magnetic Tunnelling Junction technologies. These new capabilities enable investigation of area, delay, and energy trends for various sizes of BRAM or different BRAM technologies. We also validate these trends against available commercial FPGA BRAM data. Furthermore, we demonstrate that BRAMs generated by COFFE can be used to carry out system-level architecture explorations using an area-oriented RAM-mapping flow and the Verilog-To-Routing flow.
Postharvest fruit spoilage bacteria and fungi associated with date palm (Phoenix dactylifera L) from Saudi Arabia (2014)

Date fruits are consumed as traditional and ideal food in Saudi Arabia. It provides a wide range of essential nutrients and potential health benefits. Twelve (12) most consumed varieties of date fruits and their seeds available in the open markets of Riyadh, Medina and Kharj were screened for the presence of bacteria and fungi. Our study reveals that these fruits carry a heavy load of both fungal and bacterial pathogens. The variety Sukhari was found to be the most contaminant fruit with fungi while the bacterial contamination was highest in the variety Mabroon. The Genus Aspergillus was represented by seven species, amongst which Aspergillus&nbsp;niger was the most predominant fungi. Potential pathogens like Staphylococcus aureus and Escherichia coli were isolated besides six species of the genus Bacillus. Fruits were more contaminated than their seeds. &nbsp; Key words: Date fruits, seed borne, fruit spoilage, open markets.
Hydroxychloroquine-induced retinal toxicity in systemic lupus erythematosus (2018)

A 40-year-old African American female (AAF) with history of systemic lupus erythematosus on hydroxychloroquine 200 mg twice daily (BID) for 10 years reported blurry vision for several months. Visual acuity was 20/30 in each eye. Color fundus photos [Fig. 1a and 1b] depict advanced bull's eye maculopathy with marked retinal pigment epithelium and photoreceptor loss highlighted by autofluorescence imaging [Fig. 1c and d]. Spectral domain optical coherence tomography (SD-OCT) imaging [Fig. 1e and f] demonstrates atrophic maculopathy bilaterally with significant outer retinal segment loss. Although retinal toxicity from hydroxychloroquine is rare, vision loss due to maculopathy is often irreversible and can be progressive. Despite the patient's daily dose of the recommended <5 mg/kg, her use of the medication for 10 years, coupled with a cumulative dose of 1460 g, increased her risk for hydroxychloroquine-related toxicity. Recommendation for immediate cessation of the hydroxychloroquine was communicated to the patient's rheumatologist. American Academy of Ophthalmology recommends baseline and annual screening after 5 years, minimally with OCT and automated visual field testing. Maximum daily hydroxychloroquine dose of 5mg/kg should be based on real body weight rather than ideal body weight.Figure 1: Bilateral eye findings in 40 year old woman with systemic lupus erythematosus on hydroxychloroquine for 10 years. Fundus photos (a and b) depict advanced bull's eye maculopathy in both eyes (arrow). Significantly decreased autofluorescence centrally with surrounding hyperfluorescence highlights marked retinal pigment epithelium and photoreceptor loss (c and d). Spectral domain optical coherence tomography imaging (e and f) demonstrates significant parafoveal outer retinal segment loss (arrow) and consequent “flying saucer sign” (between arrows).Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.
A capacitive absolute-pressure sensor with external pick-off electrodes (2000)

This paper describes a capacitive absolute-pressure sensor in which the sealed lead transfer is eliminated. The pick-off capacitance is between a flap or skirt-like extension of the flexible diaphragm that reaches past the sealed cavity, and an electrode patterned on the substrate directly below this extension. The sidewall of the cavity is relatively narrow and flexible. Finite-element analysis is used to explore the relevance of various dimensional parameters and to estimate the sensitivity and temperature coefficients of the device. The device is fabricated from p(++) Si on a glass substrate using the dissolved wafer process with three masking steps. The measurements of fabricated devices with 1 mm radius, 7 mum cavity height, and 8 mum wall thickness show -84 ppm kPa(-1) sensitivity at room temperature in touch-mode operation. In non-touch-mode operation the sensitivity is significantly higher. A reference device with similar dimensions shows a less than 22 ppm K-1 temperature coefficient of offset below 150 degreesC.
Epoxidation of 1,4-dihydro-1,4-methanoanthraquinones. Photochemistry and crystal structure determination of the products (1979)

The 1,4-dihydro-1,4-methanoanthraquinones (5), (6), and (10) afforded respectively the pairs of epoxides (2) and (3), (7) and (8), and (11) and (12), on treatment with hydrogen peroxide–aqueous sodium carbonate. When irradiated with sunlight, only one isomer of each pair, viz. (3), (8), and (12) underwent rearrangement, giving the quinones (4), (9), and (13) respectively. The stereochemistry of the photolabile epoxides was obtaind by a crystal structure determination for the bromo-derivative (11). This was carried out by single-crystal, X-ray diffraction at 295 K and refined by full-matrix least squares to R 0.062 (669 reflections). Crystals are monoclinic, P21/n, a= 5.870(5), b= 18.13(1), c= 11.475(6)Å, β= 95.84(6)°, and Z= 4.
Anion effect controlling the selectivity in the zinc-catalysed copolymerisation of CO2 and cyclohexene oxide (2015)

The choice of the anion has a surprisingly strong effect on the incorporation of CO2 into the polymer obtained during the zinc-catalysed copolymerisation of CO2 and cyclohexene oxide. The product span ranges from polyethercarbonates, where short polyether sequences alternate with carbonate linkages, to polycarbonates with a strictly alternating sequence of the repeating units. Herein, we report on the influence of the coordination ability of the anion on the selectivity and kinetics of the copolymerisation reaction.
Serendipity strikes again—efficient preparation of lithium tetramethylcuprate(iii) via rapid injection NMR (2010)

Lithium tetramethylcuprate(III), Me(4)CuLi, the Cu(III) analog of the Gilman reagent, has been prepared in high yield from halo-Gilman reagents Me(2)CuLi.LiX (X = Cl, Br, I) and 2,3-dichloropropene and found to have surprising thermal stability. The cyano-Gilman reagent (X = CN) follows a different pathway.
Allopregnanolone is reduced in patients with PCDH19-related epilepsy (2016)

Aim: The inherit base of PCDH19-related epilepsy suggests a hormonal involvement due to de-regulation of AKR1C1-3 genes, which encode for crucial steroid hormone-metabolizing enzymes. Both mRNA and protein levels of AKR1C3 have been reported to be decreased in a small number of PCDH19 mutated patients. Aim of this study is to verify allopregnanolone and other neuroactive steroids serum levels in PCDH19 mutated patients. Methods: We performed a prospective case-control study. We enrolled 12 patients affected by PCDH19-related epilepsy and 15 controls, age-and sex-matched. Controls were recruited among subjects evaluated for praecox puberty or hyperandrogenism. In both groups blood samples were taken at basal (T0) and 60 min after (ACTH) administration (T1). Laboratory methods: Quantitative analysis of neuroactive steroids in serum was performed by liquid chromatography-electrospray tandem mass spectrometry. Study population: median age of PCDH19-mutated patients was 8.3+5.7 years (range 2.5-18.9). Other than epilepsy, 6 patients had mental retardation. Controls were all females, age 9.2+4.0 years (range 6.1-17.9). All controls had a normal cognitive profile. Nine patients had a diagnosis of praecox puberty and 6 hyperandrogenism. Results: All neuroactive steroids resulted down produced in patients with PCDH19-related epilepsy rather than controls. At basal assessment (T0), allopregnanolone was 0.9+0.5 vs 0.18+0.9 ng/ml (p&lt;0.05); pregnanolone was 0.0+0.5 vs 0.3+0.5 ng/ml (p&gt;0.05), but pregnanolone solphate sulfate was 7.39+5.53 vs 75.41+52.69 ng/ml (p&lt;0.05). Also cortisol, progesterone and 17-OH progesterone resulted to be lowered in PCDH19-mutated patients compared with controls. After ACTH injection (T1), both neuroactive steroids and the other peripheral steroids, were confirmed to be lower compared with controls. ACTH test demonstrated a normal functioning of peripheral glands. Conclusion: We documented a down regulation of all steroidogenesis in PCDH19-related epilepsy. Particularly we found allopregnanolone and pregnaenolone solphate sulfate deficiency. Allopregnanolone is a GABA-A receptor modulators influencing the neuronal excitability, thus representing a realistic therapeutic target for PCDH19-related epilepsy.
Energy-Aware Communities Using Mobile Clients (2011)

This article distinguishes two aims: (1) to showcase an approach to identify clusters of users of mobile devices on the basis of shared common attributes, and (2) to investigate a social network-based awareness campaign which shows significant promise to reduce the individual's as well as the group's energy consumption. One possible way of progressively driving down the power consumption of individuals is to improve real-time and fine-grained awareness of their energy signature (or carbon footprint) relative to their peers. In this paper, we explore the possibility to support such an awareness program using gossiping in a network of mobile clients. We identify and address key challenges, namely how to propagate required information and, critically, how to filter out meaningless and / or counter-productive comparisons by detecting (through machine-learning techniques) boundaries between user communities. Results of a preliminary simulation study designed for evaluating performance in terms of our framework's ability to identify suitable comparison groups and to subsequently drive down the number of false positives / negatives are presented.
Towards Simulating Architectural Patterns for Self-Aware and Self-Adaptive Systems (2012)

Novel models and tools are required to support the engineering of systems that are self-aware of their current situations and capable of dynamically modifying their behavior and structure using feedback loops. In this paper, with the help of a case study in the area of e-mobility and based on our past work in self-adaptive systems modeling, we introduce a new tool (i.e., an Eclipse-based simulation plug-in) that we are developing for engineering and simulating architectural patterns based on feedback loops. Our plug-in can facilitate modeling of self-adaptive patterns using UML 2, visual animation of behavior to expose run-time information, animating composite structure, model-level debugging, simulating event-driven models, and run-time prompting.
Microwave near-field imaging of electrical and magnetic properties of graphene and graphite (2013)

Abstract
Polymer‐TiO2 Nanocomposites: A Route Towards Visually Transparent Broadband UV Filters and High Refractive Index Materials (2003)

Abstract Colloids of TiO 2 , where rutile was the only crystal modification which could be detected, with ca. 2.5 nm average particle diameter were synthesized by hydrolysis of TiCl 4 in acidic solutions. The as‐prepared particles were incorporated in polymers such as poly(vinyl alcohol) (PVAL), partially hydrolyzed poly(vinyl acetate) (PVAC88), polyvinylpyrrolidone, and poly(4‐vinylpyridine). Nanocomposites transparent in the visible range were obtained. The highest TiO 2 contents in such materials were achieved with PVAL and PVAC88, with TiO 2 contents of ca. 35 wt.‐% (i.e. 10.5 vol.‐%). In particular, the nanocomposites with TiO 2 contents above 24 wt.‐% acted as efficient UV filters for radiation up to ca. 360 nm. At very low TiO 2 contents, an absorption maximum of the embedded TiO 2 particles was observed at 225 nm with an extinction coefficient of 140 000 cm −1 and a full width at half maximum of 45 nm, i.e. not only the absorption at the maximum at 225 nm but also at the flank of this band contributed significantly to the broadband UV absorption in the nanocomposites at higher TiO 2 fractions. The incorporation of TiO 2 enhanced the refractive index of the nanocomposites: for instance a refractive index of 1.609 was measured for a nanocomposite comprising 10.5 vol.‐% TiO 2 in PVAL, compared with 1.521 for the pristine polymer. TEM image of a section of a nanocomposite of poly(vinyl alcohol) and 11 wt.‐% TiO 2 (appearing dark). magnified image TEM image of a section of a nanocomposite of poly(vinyl alcohol) and 11 wt.‐% TiO 2 (appearing dark).
The Mixed-Body Model: A Method for Predicting Large Deflections in Stepped Cantilever Beams (2021)

Abstract This paper presents a method for predicting endpoint coordinates, stress, and force to deflect stepped cantilever beams under large deflections. This method, the mixed-body model or MBM, combines small deflection theory and the pseudo-rigid-body model for large deflections. To analyze the efficacy of the model, the MBM is compared to a model that assumes the first step in the beam to be rigid, to finite element analysis, and to the numerical boundary value solution over a large sample set of loading conditions, geometries, and material properties. The model was also compared to physical prototypes. In all cases, the MBM agrees well with expected values. Optimization of the MBM parameters yielded increased agreement, leading to average errors of &amp;lt;0.01 to 3%. The model provides a simple, quick solution with minimal error that can be particularly helpful in design.
A Reconstruction Algorithm for Temporally Aliased Seismic Signals Recorded by the InSight Mars Lander (2021)

In December 2018, the NASA InSight lander successfully placed a seismometer on the surface of Mars. Alongside, a hammering device was deployed at the landing site that penetrated into the ground to attempt the first measurements of the planetary heat flow of Mars. The hammering of the heat probe generated repeated seismic signals that were registered by the seismometer and can potentially be used to image the shallow subsurface just below the lander. However, the broad frequency content of the seismic signals generated by the hammering extends beyond the Nyquist frequency governed by the seismometer's sampling rate of 100 samples per second. Here, we propose an algorithm to reconstruct the seismic signals beyond the classical sampling limits. We exploit the structure in the data due to thousands of repeated, only gradually varying hammering signals as the heat probe slowly penetrates into the ground. In addition, we make use of the fact that repeated hammering signals are sub-sampled differently due to the unsynchronized timing between the hammer strikes and the seismometer recordings. This allows us to reconstruct signals beyond the classical Nyquist frequency limit by enforcing a sparsity constraint on the signal in a modified Radon transform domain. In addition, the proposed method reduces uncorrelated noise in the recorded data. Using both synthetic data and actual data recorded on Mars, we show how the proposed algorithm can be used to reconstruct the high-frequency hammering signal at very high resolution.
Automated fitting and rational modeling algorithm for EM-based S-parameter data (2002)

A smart adaptive algorithm is presented to model the spectral response of general passive planar electrical structures over a frequency range of interest, based on a limited number of data samples. Rational (pole-zero) functions are used to model and interpolate the S-parameter data obtained through full-wave electro-magnetic simulations. The adaptive algorithm doesn't require any a priori knowledge of the dynamics of the system to select an appropriate sample distribution and an appropriate model complexity.
Sensing Matrix Optimization for Block-Sparse Decoding (2010)

Recent work has demonstrated that using a carefully designed sensing matrix rather than a random one, can improve the performance of compressed sensing. In particular, a well-designed sensing matrix can reduce the coherence between the atoms of the equivalent dictionary, and as a consequence, reduce the reconstruction error. In some applications, the signals of interest can be well approximated by a union of a small number of subspaces (e.g., face recognition and motion segmentation). This implies the existence of a dictionary which leads to block-sparse representations. In this work, we propose a framework for sensing matrix design that improves the ability of block-sparse approximation techniques to reconstruct and classify signals. This method is based on minimizing a weighted sum of the inter-block coherence and the sub-block coherence of the equivalent dictionary. Our experiments show that the proposed algorithm significantly improves signal recovery and classification ability of the Block-OMP algorithm compared to sensing matrix optimization methods that do not employ block structure.
Motion index/search system based on real-world haptics (2010)

The paper proposes the motion index/search system based on real-world haptics. The motion index system indexes the human motion using the force and position stored by the motion saving system. The motion index system is able to create the motion dictionary, which includes the desired indexed motions. Meanwhile, the motion search system searches the motion of human operator by using moving covariance according to the indexed motions The motion search system proposed in this paper is utilized to recognize the human motion. By the experimental results, the validity and the possibility of the motion index/search system are confirmed.
Association of the NuMA region on chromosome 11q13 with breast cancer susceptibility (2005)

The development of breast cancer is a complex process that involves multiple genes at many stages, from initial cell cycle dysregulation to disease progression. To identify genetic variations that influence this process, we conducted a large-scale association study using a collection of German cases and controls and &gt;25,000 SNPs located within 16,000 genes. One of the loci identified was located on chromosome 11q13 [odds ratio (OR) = 1.85, P = 0.017]. The initial association was subsequently tested in two independent breast cancer collections. In both sample sets, the frequency of the susceptibility allele was increased in the cases (OR = 1.6, P = 0.01). The susceptibility allele was also associated with an increase in cancer family history ( P = 0.1). Fine mapping showed that the region of association extends ≈300 kb and spans several genes, including the gene encoding the nuclear mitotic apparatus protein ( NuMA ). A nonsynonymous SNP (A794G) in NuMA was identified that showed a stronger association with breast cancer risk than the initial marker SNP (OR = 2.8, P = 0.005 initial sample; OR = 2.1, P = 0.002 combined). NuMA is a cell cycle-related protein essential for normal mitosis that is degraded in early apoptosis. NuMA-retinoic acid receptor α fusion proteins have been described in acute promyelocytic leukemia. Although the potential functional relevance of the A794G variation requires further biological validation, we conclude that variations in the NuMA gene are likely responsible for the observed increased breast cancer risk.