gebhart/patrepeval huggingface dataset:
EESM Based Link Error Prediction for Adaptive MIMO-OFDM System (2007)

Exponential effective SNR mapping (EESM) based link error prediction is widely used for adaptive MIMO-OFDM in system evaluations to simplify simulation complexity. In MIMO system, EESM prediction method is more sophisticated due to specific MIMO detection techniques and spatial selectivity of multiple antennas. Especially for maximum likelihood (ML) detection it is hard to determine post-detected SNR due to non-linearity of ML detection, so penalty method based on MMSE detection has been proposed for EESM mapping. Simulations show EESM based effective SNR for ML receiver has obtained high fitting precision compared with AWGN performance in QPSK or 16QAM modulation, convolution coding with rate 1/2 in 2 times 2 MIMO-OFDM system. This method can be naturally generalized into other modulation and coding rates, higher level of MIMO modes, and other fading channels with frequency selectivity, time selectivity or spatial selectivity.
Chloric Acid Method for Determining Protein-Bound Iodine by Use of Iodine-131 (1957)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChloric Acid Method for Determining Protein-Bound Iodine by Use of Iodine-131J. F. Goodwin, R. B. Hahn, and A. J. BoyleCite this: Anal. Chem. 1957, 29, 11, 1681–1684Publication Date (Print):November 1, 1957Publication History Published online1 May 2002Published inissue 1 November 1957https://pubs.acs.org/doi/10.1021/ac60131a037https://doi.org/10.1021/ac60131a037research-articleACS PublicationsRequest reuse permissionsArticle Views23Altmetric-Citations4LEARN 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
Regulation of actin dynamics is critical for endothelial barrier functions (2004)

We tested the hypothesis that the equilibrium between F- and G-actin in endothelial cells modulates the integrity of the actin cytoskeleton and is important for the maintenance of endothelial barrier functions in vivo and in vitro. We used the actin-depolymerizing agent cytochalasin D and jasplakinolide, an actin filament (F-actin) stabilizing and promoting substance, to modulate the actin cytoskeleton. Low doses of jasplakinolide (0.1 microM), which we have previously shown to reduce the permeability-increasing effect of cytochalasin D, had no influence on resting permeability of single-perfused mesenteric microvessels in vivo as well as on monolayer integrity. The F-actin content of cultured endothelial cells remained unchanged. In contrast, higher doses (10 microM) of jasplakinolide increased permeability (hydraulic conductivity) to the same extent as cytochalasin D and induced formation of intercellular gaps in cultured myocardial endothelial (MyEnd) cell monolayers. This was accompanied by a 34% increase of F-actin and pronounced disorganization of the actin cytoskeleton in MyEnd cells. Furthermore, we tested whether an increase of cAMP by forskolin and rolipram would prevent the cytochalasin D-induced barrier breakdown. Conditions that increase intracellular cAMP failed to block the cytochalasin D-induced permeability increase in vivo and the reduction of vascular endothelial cadherin-mediated adhesion in vitro. Taken together, these data support the hypothesis that the state of polymerization of the actin cytoskeleton is critical for maintenance of endothelial barrier functions and that both depolymerization by cytochalasin D and hyperpolymerization of actin by jasplakinolide resulted in an increase of microvessel permeability in vivo. However, cAMP, which is known to support endothelial barrier functions, seems to work by mechanisms other than stabilizing F-actin.
Long-Lived Exciplex Formation and Delayed Exciton Emission in Bulk Heterojunction Blends of Silole Derivative and Polyfluorene Copolymer: The Role of Morphology on Exciplex Formation and Charge Separation (2009)

Long-lived exciplex emission is observed in blend films of poly[9,9-dioctylfluorene-co-N-(4-methoxy-phenyl)diphenylamine] (TFMO) and the soluble silole derivative 2,5-bis-(2,2-bipyridin-6-yl)-1,1-dimethyl-3,4-diphenylsilacyclopentadiene (PyPySPyPy). The exciplex is characterized by a long-lived (approximately 40-90 ns) component in both the photoluminescence and electroluminescence spectra, which is red-shifted relative to the emission of the pristine materials. In addition to exciplex emission, delayed fluorescence from the TFMO singlet state is observed and is attributed to exciton regeneration through the interfacial exciplex state. Comparing blend films made using chlorobenzene and p-xylene solvents, we find that exciplex lifetime and exciton regeneration in the blend film are sensitive to the choice of solvent and the resulting morphology of the blend film. The exciplex emissive lifetime can be correlated to changes in photoluminescence quenching and efficiency of light-emitting diodes.
Labelling and immunoprecipitation of thyroid microsomal antigen (1985)

Human thyroid microsomes have been solubilized, labelled with 125I, immunoprecipitated with microsomal antibody and analysed by gel electrophoresis. The analysis indicated that two peptides of relative molecular masses 108 and 118 kDa, under reducing conditions, were specifically immunoprecipitated by microsomal antibody. Similar values were obtained under non-reducing conditions indicating that the two peptides were not linked by disulphide bridges to each other or to different peptides. These results suggest that the microsomal antigen contains two components which may be linked by non-covalent bonds to form a single protein of 230 kDa. Studies with lectin affinity columns suggested that the antigen was glycosylated.
Analysis and preventive measures of occupational exposure of medical staff in hospitals from 2015 to 2016 (2019)

Objective
To understand constituent ratio and exposure causes of occupational exposure among medical staff in Yuncheng Central Hospital in order to provide protection measures for medical staff to prevent sharp instrument injuries.


Methods
According to the Procedure of Reporting Occupational Exposure of Medical Staff in Hospitals, medical staff should register and report sharp instrument injuries within 24 hours after injury, so as to facilitate to establish accurate statistics of sharp instrument injuries quickly. The data of occupational exposure of medical personnel from 2015 to 2016 were analyzed statistically.


Results
From 2015 to 2016, a total of 100 medical staff suffered sharp instrument injuries. According to the species of exposure source, hepatitis B has the highest proportion (54%), followed by unknown causes (19%), hepatitis C (13%) and syphilis (5%), consequently. Nurses (61%), doctors (25%), cleaners (9%) and midwives (5%) were ranked by job category of medical staff. According to the length of work of medical staff, it was 53% in less than 5 years, 33% in 6-10 years, 19% in 11-20 years and 3% in more than 20 years. According to the clinical activities conducted during exposure, the treatment of medical waste was 25%, 20% after needle extraction, and 11% at puncture time.


Conclusions
In view of the high risk of occupational exposure of medical staff, we should continuously improve the protective consciousness and skills of medical staff, operation procedures and emergency handling procedures after sharp instrument injuries should be standardized, so as to reduce the occurrence of sharp instrument injuries.


Key words: 
Occupational exposure; Sharp instrument injury; Countermeasure; Hematogenous pathogens
Two-dimensional synchronization patterns for minimum ambiguity (1982)

A number of closely related combinatorial problems corresponding to specific assumptions about the type of time-frequency sequence which may be appropriate in a particular application, are formulated in terms of square or rectangular arrays of dots with appropriate constraints on the two-dimensional correlation function. The current state of knowledge concerning each of these problems is summarized. It is hoped that more general constructions may be found, leading to larger families of solutions, as well as better computational algorithms for finding individual solutions which may lie outside of the general families.
Infertility: Prognostic indicators for intrauterine insemination (IUI): statistical model for IUI success (1996)

A retrospective analysis of 260 completed intrauterine insemination (IUI) cycles was used in an attempt to identify significant variables predictive of treatment success. Couples received a maximum of three IUI cycles for the treatment of anovulation, cervical factors or unexplained infertility. Male factor problems were largely excluded by pretreatment screening. The overall pregnancy rate was 19.6% per completed cycle, the miscarriage rate 15.6%, the multiple pregnancy rate 23.5% and the cancellation rate 19%. Logistic regression identified four significant IUI variables [follicle number (P < 0.005), endometrial thickness (P < 0.005), duration of infertility (P < 0.01) and progressive motility (P < 0.05)] which were the most predictive of IUI success. The chance of conceiving when only one follicle was produced was only 7.6%, whereas with two follicles this chance increased to 26%. These variables were incorporated into a statistical model to allow the prediction of the chance of success in subsequent cycles. We conclude that careful patient selection criteria coupled with successful ovarian stimulation is the model for IUI success.
Use and Validation of Supervised Machine Learning Approach for Detection of GNSS Signal Spoofing (2019)

Spoofing of the GNSS signals presents continuous threat to the users of safety of life applications due to unaware use of false signals in generating position and timing solution. Among numerous anti-spoofing techniques applied at different stages of the signal processing, we present approach of monitoring the cross-correlation of multiple GNSS observables and measurements as an input for supervised machine learning based approach to detect potentially spoofed GNSS signals. Both synthetic, generated in laboratory, and real-world spoofing datasets were used for verification and validation of the supervised machine learning algorithms for detection of the GNSS spoofing.
Interfering entangled photons of different colors (1993)

We have observed unusual second- and fourth-order interference patterns when entangled photons with center-wavelength differences \ensuremath{\approxeq}40 nm are mixed together at single or dual Mach-Zehnder interferometers. The difference frequency of the photons appears directly in the spectrum of the coincidence rate. This phase-sensitive behavior can reveal center-frequency differences from zero to hundreds of THz.
Asymmetric Synthesis of β-Substituted α-Methyl-β-amino Esters by Mannich Reaction of (<i>S</i>,<i>S</i>)-(<i>+</i>)-Pseudoephedrine Acetamide Derived Enolate with Imines (2001)

[reaction: see text]. The reaction of an (S,S)-(+)-pseudoephedrine acetamide based enolate with several imines afforded smoothly and with full stereochemical control a series of beta-substituted alpha-methyl-beta-aminoamides that upon hydrolysis/esterification afforded the corresponding beta-aminoester derivatives in good yields and in almost enantiomerically pure form.
Flash-Optimized Temporal Indexing for Time-Series Data Storage on Sensor Platforms (2014)

While it is essential to exploit in-network processing in wireless sensor networks in order to save bandwidth and energy, we are constrained by the limited storage available in off-the-shelf sensor devices. NAND flash memory has great potential for extending storage capacity for sensor applications. Since each sensor platform is typically equipped with limited main memory and sensor data, as well as the fact that queries are temporal, existing flash index or file systems for general portable devices are not suitable for sensor networks. We propose Time-Log Tree (TL-Tree), a novel unbalanced and cascaded structure, that takes advantage of available flash capacity while making use of the time-series property as a primary feature for optimizing both memory and energy constraints. Extensive experiments show TL-Tree's ability to utilize both flash capacity and temporal locality to support sensor data processing. Compared to other schemes, it achieves much better access and energy savings for different kinds of random and temporal range queries. In addition, TL-Tree can also be easily extended to support value-based queries. We have developed a hardware board that includes a raw 128MB NAND flash chip on MicaZ mote. We have also implemented a flash driver and the TL-Tree to demonstrate the practicality of this idea.
The Menopause: When It Is All Over or Is It? (1994)

The menopause is defined rigorously as the cessation of menstruation as a result of ovarian follicular depletion. Although in common clinical usage, the term is used to encompass the menopausal transition, a period which may average 4 years in duration, and during which alterations in menstrual regularity and/or flow may be accompanied by somatic or psychological symptoms. Measurement of serum follicle-stimulating hormone (FSH) with or without oestradiol (E2) is frequently advocated as providing a useful indicator of menopausal status. Several studies have shown an increase in serum FSH, with or without decrease in E2, in women over the age of 40 years who continue to cycle regularly. Abrupt fluctuations in serum FSH and E2 may be observed, with typically post menopausal levels subsequently returning to the normal reproductive range. In a cross sectional study, of regularly cycling women randomly selected from the Melbourne community, and over the age of 45 years, 7% had FSH levels typical of the post menopause, and 39% had levels above those found during the follicular phase in women aged less than 35 years. It is concluded that serum FSH is of little diagnostic value in the assessment of menopausal status, which can currently be made only on clinical grounds. An elevated serum FSH level cannot tell us reliably 'when it is all over'.
Single-point diamond machining of glasses (1989)

Abstract A machine tool of very high stiffness has been constructed and used for single-point diamond grooving of blanks of soda-lime glass and optical glassy quartz. Results show that below a critical depth of cut predicted in order of magnitude by a fracture mechanics analysis, material is removed by the action of plastic flow, leaving crack-free surfaces. Subsequent observations by scanning electron microscopy indicate that a crucial part in the detachment of ribbons of swarf is played by the operation of residual stresses after the passage of the tool, particularly in the case of the amorphous ceramic.
CONTROL AND CONFINEMENT OF OIL POLLUTION ON WATER WITH MONOMOLECULAR SURFACE FILMS (1972)

Forty-seven chemicals were investigated to determine their usefulness as practical materials with which to form single-molecule-thick films that are capable of reducing the area covered by oil spilled on water. These chemicals are able to maintain the oil in a layer up to a maximum of approximately one-half inch thick by preventing it from spreading over the water surface. Such materials, classified as Collecting Agents by the National Contingency Plan, may be quite useful in increasing the efficiency of oil recovery devices, since all such devices perform better on thicker layers of oil. All materials investigated are commercially available in large quantities. Properties examined in this investigation included freezing points, viscosities, specific gravities, maximum film pressures achievable by the single-molecule-thick film, relative durabilities of materials in monomolecular layers confining oil on water in motion, and film pressures as a function of surface concentration of the monolayer forming materials.
CT Based Three-Dimensional Measurement of Orbit and Eye Anthropometry (2010)

The comprehensive set of measurements collected in this study provides three-dimensional information on orbit geometry, as well as placement of the eye within the orbit. These measurements and the methodology used will contribute to the development of finite element models of the orbit and eye for computational modeling purposes and may be useful in the design of eye protection equipment.
Thermal Cracking of Higher Paraffins (1949)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThermal Cracking of Higher ParaffinsH. H. Voge and G. M. GoodCite this: J. Am. Chem. Soc. 1949, 71, 2, 593–597Publication Date (Print):February 1, 1949Publication History Published online1 May 2002Published inissue 1 February 1949https://pubs.acs.org/doi/10.1021/ja01170a059https://doi.org/10.1021/ja01170a059research-articleACS PublicationsRequest reuse permissionsArticle Views759Altmetric-Citations108LEARN 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
Encapsulation of a Metal–Organic Polyhedral in the Pores of a Metal–Organic Framework (2016)

A new and efficient hydrophilicity-directed approach (HDA) is developed to encapsulate large guest molecules beyond the aperture size limitation in the nanospace of metal-organic frameworks (MOFs), as exemplified by the self-assembly of a metal-organic polyhedral (MOP) M6L4 into MIL-101. This strategy is based on the different hydrophilicities between inner and outer surfaces of the preformed MOF that may direct the self-assembly of the MOP in the MOF pores by using a two-solvent system. Importantly, as the MOP guest molecule is larger than the MOF aperture size, aggregation and leaching are effectively prevented, endowing the encapsulated MOP with significantly enhanced reactivity and stability in the catalytic transformations as compared to the pristine MOP.
Antimicrobial peptides: Application informed by evolution (2020)

Antimicrobial peptides (AMPs) are essential components of immune defenses of multicellular organisms and are currently in development as anti-infective drugs. AMPs have been classically assumed to have broad-spectrum activity and simple kinetics, but recent evidence suggests an unexpected degree of specificity and a high capacity for synergies. Deeper evaluation of the molecular evolution and population genetics of AMP genes reveals more evidence for adaptive maintenance of polymorphism in AMP genes than has previously been appreciated, as well as adaptive loss of AMP activity. AMPs exhibit pharmacodynamic properties that reduce the evolution of resistance in target microbes, and AMPs may synergize with one another and with conventional antibiotics. Both of these properties make AMPs attractive for translational applications. However, if AMPs are to be used clinically, it is crucial to understand their natural biology in order to lessen the risk of collateral harm and avoid the crisis of resistance now facing conventional antibiotics.
Neuartige fünffach koordinierende Polythioether ‐‐ eine Alternative zu makrocyclischen Chelatbildnern (1994)

Ausschließlich 1:1‐Komplexe mit Cu II ‐Ionen bilden die neuartigen Polythioether 1 und 2 mit zentraler, cis‐disubstituierter Thian‐ bzw. Thiepaneinheit; mit einem entsprechenden acyclischen Polythioether werden dagegen Komplexe höherer Ordnung erhalten. Es können also auch andere als makrocyclische Thioether wirksame Chelatbildner sein; die stereospezifische Synthese von 1 und 2 zeigt darüber hinaus Wege zu neuartigen Thiacryptanden auf. magnified image
Sodium butyrate inhibits expression of urokinase and its receptor mRNAs at both transcription and post‐transcription levels in colon cancer cells (1995)

The effects of butyrate on the modulation of urokinase plasminogen activator (uPA) and its receptor (uPAR) mRNAs were studied. While both mRNA levels were increased after stimulation by tumor necrosis factor alpha (TNF alpha), phorbol ester (PMA) and cycloheximide, they were inhibited by butyrate at 2.5 to 25 mM. Nuclear run-on transcription assays indicated that uPA mRNA was modulated by butyrate at the transcriptional level but the uPAR gene was regulated at both transcriptional and post-transcriptional levels in the presence or absence of TNF alpha. In the presence of PMA, however, butyrate acts at the post-transcriptional level on both genes.
Design and Analysis of a Dual-Mode MEMS Micromirror (2010)

In this paper, the design and simulation of a dual-mode Aluminum MEMS micromirror device are proposed. The dual-mode micromirror can work in either torsional or piston modes, depending on the voltage scheme applied to the bottom driving electrodes. The working principle and performance of the micromirror are analyzed. Based upon the analysis, a set of optimized micromirror design parameters is suggested, and the corresponding performance of the micromirror design is reported. According to the analysis, the mirror can deflect for a maximum controllable displacement of 1.3μm in its piston mode, and rotate for a maximum controllable angle of ±3.6° in its torsional mode. If the micromirror works in digital operation in its torisional mode, a maximum rotation angle of ±7.8° can be achieved. ANSYS FEM method is used to simulate the first five vibrational modes and the corresponding resonant frequencies of the micromirror. The micromirror is to be fabricated with thick photoresist sacrificial layer technique. The proposed micromirror can be used to modulate the phase as well as the direction of the incident light due to its dual-mode modes.