gebhart/patrepeval huggingface dataset:
How is Time Frequency Space Modulation Related to Short Time Fourier Signaling? (2021)

We investigate the relationship between Orthogonal Time Frequency Space (OTFS) modulation and Orthogonal Short Time Fourier (OSTF) signaling. OTFS was recently proposed as a new scheme for high Doppler scenarios and builds on OSTF. We first show that the two schemes are unitarily equivalent in the digital domain. However, OSTF defines the analog-digital interface with the waveform domain. We then develop a critically sampled matrix-vector model for the two systems and consider linear minimum mean-squared error (MMSE) filtering at the receiver to suppress inter-symbol interference. Initial comparison of capacity and (uncoded) probability of error reveals a surprising observation: OTFS under-performs OSTF in capacity but over-performs in probability of error. This result can be attributed to characteristics of the channel matrices induced by the two systems. In particular, the diagonal entries of OTFS matrix exhibit nearly identical magnitude, whereas those of the OSTF matrix exhibit wild fluctuations induced by multipath randomness. It is observed that by simply replacing the unitary matrix, relating OTFS to OSTF, by an arbitrary unitary matrix results in performance nearly identical to OTFS. We then extend our analysis to orthogonal frequency division multiplexing (OFDM) and also consider a more extreme scenario of relatively large delay and Doppler spreads. Our results demonstrate the significance of using OSTF basis waveforms rather than sinusoidal ones in OFDM in highly dynamic environments, and also highlight the impact of the level of channel state information used at the receiver.
Simultaneous measurement of strain and torsion based on a seven-core fiber Mach-Zehnder interferometer (2019)

A Mach-Zehnder interferometer based on seven-core fiber (SCF) and muti-mode fiber (MMF) is proposed and experimentally demonstrated. The interferometer is fabricated by splicing a segment of SCF spliced with two MMFs. The SCF length and MMF length are 5cm and 1cm, respectively. When the broadband light is injected into the interferometer through a lead-in single mode fiber, a pronounced interference pattern appears in the transmission spectrum. By monitoring the wavelength and power shifts of interference dips, simultaneous measurement of strain and torsion can be achieved. The experimental results show that the wavelengths at interference dip have a blue shift with the increases of strain, but the wavelength does not respond to the torsion. The power sensitivities of the interference dip to the strain and torsion are sensitivities are 0.001dB /&deg; and 0.16dB/&deg;, respectively. The simultaneous measurement of strain and torsion is demonstrated based on the sensitive matrix. The proposed MZI exhibits the advantages of easy fabrication, low cost, and simultaneous measurement of strain and torsion, which will make a significant contribution to torsion measurement.
Miniaturized thin film thermal vacuum sensor (1995)

A new miniaturized thin film Pirani type vacuum sensor that detects pressure from 1×10−5 to 760 Torr was developed. The compact instrument is attitude insensitive, rugged, and has rapid response to pressure variations. The very small dimension between the heating element and the heat sink prevents the flow from entering into the viscous regime thus resulting in a predominately conductive heat transfer over the entire pressure range. This removes the complexities introduced into the pressure versus output curve by convective heat transfer. The output is linear from 1×10−4 to 1 Torr, and then monotonically increases beyond 760 Torr. A unique feature of this instrument is the use of a microprocessor to compute the sensor power from the analog voltage and current. In the molecular flow regime, the absolute pressure is directly proportional to the power dissipated by the surrounding gas. By measuring the power, the sensor rejects most of the errors introduced by ambient temperature variations. The analog-to-digital converters for both the current and the voltage signals use the ∑–Δ conversion method to reject electrical noise by the averaging technique. This results in the stable signal detection of pressure down to 1×10−5 Torr. The instrument is thermally stable over an ambient temperature range of 0–50 °C when the pressure is between 1×10−4 and 760 Torr.
LABORATORY AND PLANT: AN APPARATUS FOR DIGESTING CRUDE FIBER (1916)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLABORATORY AND PLANT: AN APPARATUS FOR DIGESTING CRUDE FIBERJ. M. PickelCite this: Ind. Eng. Chem. 1916, 8, 4, 366–367Publication Date (Print):April 1, 1916Publication History Published online1 May 2002Published inissue 1 April 1916https://pubs.acs.org/doi/10.1021/i500004a024https://doi.org/10.1021/i500004a024research-articleACS PublicationsRequest reuse permissionsArticle Views6Altmetric-Citations-LEARN 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 options Get e-Alerts
Towards Moisture Tolerant Aprotic Lithium-air Batteries via Reversibly Cycling LiOH (2020)

In the light of recent commitments from several European countries to ban the sale of internal combustion engine vehicles in the coming decades, the race to develop electrical storage strategies beyond the capabilities of lithium ion batteries is intensifying considerably. Amongst the many different options, Li-air batteries (LABs) have attracted significant attention due to their comparable energy density to fossil fuels 1 . Despite of its potential, several fundamental challenges remain to be overcome for their successful development 2-4 . Amongst these challenges, the instability of the typical discharge products (LiO 2 and Li 2 O 2 ) in the presence of moisture and CO 2 represents a fundamental stumbling block 5 . The development of moisture-tolerant, LiOH-based non-aqueous Li-O 2 batteries is a promising route to bypassing the inherent limitations caused by the instability of their typical discharge products 6 . The use of the I - /I 3 - redox couple to mediate the LiOH-based oxygen reduction and oxidation reactions has proven challenging to develop due to the multiple reaction paths induced by the oxidation of I - on cell charging 7 . In this work we demonstrate a reversible LiOH-based Li-O 2 battery cycling through a 4 e - /O 2 process with low charging overpotential (below 3.5 V vs Li/Li + ). This is achieved by increasing the oxidizing power of I 3 - , which shifts the charging mechanism from IO - /IO 3 - formation to O 2 evolution. 1. C. P. Grey and J. M. Tarascon, Nature Materials , 2017, 16 , 45–56. 2. G. Girishkumar, B. McCloskey, A. C. Luntz, S. Swanson and W. Wilcke, The Journal of Physical Chemistry Letters , 2010, 1 , 2193-2203. 3. D. Aurbach, B. D. McCloskey, L. F. Nazar and P. G. Bruce, Nature Energy , 2016, 1 , 16128. 4. D. G. Kwabi, N. Ortiz-Vitoriano, S. A. Freunberger, Y. Chen, N. Imanishi, P. G. Bruce and Y. Shao-Horn, MRS Bulletin , 2014, 39 , 443-452. 5. N. Mahne, B. Schafzahl, C. Leypold, M. Leypold, S. Grumm, A. Leitgeb, Gernot A. Strohmeier, M. Wilkening, O. Fontaine, D. Kramer, C. Slugovc, Sergey M. Borisov and Stefan A. Freunberger, Nature Energy , 2017, 2 , 17036. 6. T. Liu, M. Leskes, W. Yu, A. J. Moore, L. Zhou, P. M. Bayley, G. Kim and C. P. Grey, Science , 2015, 350 , 530-533. 7. C. M. Burke, R. Black, I. R. Kochetkov, V. Giordani, D. Addison, L. F. Nazar and B. D. McCloskey, ACS Energy Letters , 2016, 1 , 747-756. Figure 1
MO‐C‐BRB‐06: Panel Discussion on Leadership (2016)

With the profound changes currently occurring in medicine, the role of the medical physicist cannot stagnate, but must evolve to meet the challenges and opportunities that are presented. Medical physicists must understand these changes and establish themselves not only as relevant but as leaders in this new environment. We must increase our presence in clinical settings such as tumor boards, patient rounds, and the development of new diagnosis, imaging, and treatment techniques. By establishing ourselves as competent scientists, we can and must participate in the development of technologies through research, teaching, and clinical implementation. As medical physicists we must define our roles and value to our physician colleagues, patients, referring physicians, and senior administrators. We cannot afford to be viewed solely as quality assurance technologists, but need to move forward in step with medical and practice advances, becoming recognized as having a leadership role in providing quality research, technological development, and quality patient care. In this session, four leaders in medical research and healthcare will discuss their observations on how medical physicists have contributed to advancements in healthcare and opportunities to continue leadership in providing quality medicine through the applications of physics to research, education, and clinical practice. Learning Objectives: Understand the changes in the healthcare environment and how medical physicists can contribute to improving patient care. Learn how medical physicists are currently leading research efforts to improve clinical imaging and diagnosis. Understand the role of medical physicists in developing new technology and leading its translation into clinical care.
A Comparison of Four Discrete-Time Repetitive Control Algorithms (1992)

This paper is a much abbreviated version of an extensive comparison of four different repetitive control algorithms. Performance issues such as computational intensity and execution time are discussed. These algorithm were used on a computer disk drive. From presented experimental data conclusions are drawn about convergence and robustness.
Photoluminescence studies of lanthanide ion complexes of gold and silver dicyanides. 2. A new low dimensional solid state class for nonradiative excited state energy transfer (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoluminescence studies of lanthanide ion complexes of gold and silver dicyanides. 2. A new low dimensional solid state class for nonradiative excited state energy transferZerihun Assefa and Howard H. PattersonCite this: Inorg. Chem. 1994, 33, 26, 6194–6200Publication Date (Print):December 1, 1994Publication History Published online1 May 2002Published inissue 1 December 1994https://pubs.acs.org/doi/10.1021/ic00104a033https://doi.org/10.1021/ic00104a033research-articleACS PublicationsRequest reuse permissionsArticle Views189Altmetric-Citations26LEARN 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
Hypoxia in the Eye: A Two-Sided Coin (2012)

Tissue oxygenation in general and hypoxia in particular are important regulators of retinal physiology and pathophysiology. Reduced oxygen tension and hypoxia-inducible transcription factors along with some of their target genes are critically involved in retinal development, and especially in the generation of a normal retinal vasculature. Well-timed hypoxia is thus vital for the young eye to establish proper retinal function and vision. However, when hypoxia is ill-timed, reduced oxygen tension may be associated with the development of retinal pathologies, including retinopathy of prematurity, diabetic retinopathy, glaucoma, age-related macular degeneration, or high altitude retinopathy. Here, reduced oxygen tension activates a hypoxic response that culminates in an increased expression of vascular endothelial growth factor. This causes pathological neovascularization of the delicate neuronal retina, a process that may ultimately lead to loss of vision. In contrast, preconditioning by well-defined and controlled short-term hypoxia is not devastating for the retina but instead induces a molecular response that provides protection to neuronal cells. Detailed investigation of hypoxic mechanisms during development and adulthood may thus reveal factors, which may be targeted by therapeutic approaches to save and preserve vision in patients.
Tailoring the microstructure and charge transport in conjugated polymers by alkyl side-chain engineering (2015)

Transport measurements with <italic>in-situ</italic> XRD reveal low alkyl side-chain densities to induce an ordered helicoidal conformation with large electronic energy disorder.
RecombinantParagonimus westermaniYolk Ferritin Is a Useful Serodiagnostic Antigen (2002)

A recombinant protein of Paragonimus westermani yolk ferritin was bacterially produced from a previously cloned complementary DNA and was used as an antigen for an enzyme-linked immunosorbent assay (ELISA) against paragonimiasis- and other helminth-infected sera to evaluate its serodiagnostic potential. The ELISA revealed that paragonimiasis westermani had 88.2% sensitivity and 100% specificity. The positive and negative predictive values of the ELISA were calculated to be 100% and 97.1%, respectively. Sera from cats experimentally infected with P. westermani began to produce immunoglobulin G antibodies against the yolk ferritin at 13 weeks after infection, which suggests that the corresponding antigen was derived from the vitellaria in accordance with maturation of P. westermani. These results indicate that the recombinant P. westermani yolk ferritin is a potent serodiagnostic reagent for paragonimiasis westermani from an early stage of the infection.
Encapsulation and Characterization of Proton-Bound Amine Homodimers in a Water Soluble, Self-Assembled Supramolecular Host (2009)

Cyclic amines can be encapsulated in a water-soluble self-assembled supramolecular host upon protonation. The hydrogen bonding ability of the cyclic amines, as well as the reduced degrees of rotational freedom, allows for the formation of proton-bound homodimers inside of the assembly which are otherwise not observable in aqueous solution. The generality of homodimer formation was explored with small N-alkyl aziridines, azetidines, pyrrolidines and piperidines. Proton-bound homodimer formation is observed for N-alkylaziridines (R = methyl, isopropyl, tert-butyl), N-alkylazetidines (R = isopropyl, tertbutyl), and N-methylpyrrolidine. At high concentration, formation of a proton-bound homotrimer is observed in the case of N-methylaziridine. The homodimers stay intact inside the assembly over a large concentration range, thereby suggesting cooperative encapsulation. Both G3(MP2)B3 and G3B3 calculations of the proton-bound homodimers were used to investigate the enthalpy of the hydrogen bond in the proton-bound homodimers and suggest that the enthalpic gain upon formation of the proton-bound homodimers may drive guest encapsulation.
Self‐induced transparency in InGaAs quantum dot waveguides (2003)

We present the experimental observation and the theoretical modelling of self-induced transparency signatures such as nonlinear transmission, pulse retardation and reshaping for subpicosecond pulse propagation in a 2 mm-long InGaAs quantum-dot ridge waveguide at 10 K. The measurements were obtained using a cross-correlation frequency resolved optical gating technique which allows us to retrieve the field amplitude of the propagating pulses.
Effects of three SSRIs (fluvoxamine, sertraline, paroxetine) on NGF-induced neurite outgrowth in PC12 cells. (2015)

&lt;p&gt;Fluvoxamine (The data show the mean±S.E.M (n = 6)), paroxetine (The data show the mean±S.E.M (n = 6)), sertraline (The data show the mean±S.E.M (n = 6)). Fluvoxamine (but not sertraline or paroxetine) significantly potentiated NGF-induced neurite outgrowth in PC12 cells in a concentration-dependent manner. The potentiation by fluvoxamine was blocked by co-administration of the selective sigma-1 receptor antagonist NE-100 (1.0 µM). Number is the concentration (µM) of drugs. *P&lt;0.05, ***P&lt;0.001 as compared with control (NGF alone group). &lt;sup&gt;+++&lt;/sup&gt;P&lt;0.001 as compared with fluvoxamine (10.0 µM) plus NE-100 group.&lt;/p&gt;
Nanoconfined enzyme nanotube for biocatalysis (2014)

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Progress in Convergent-Beam Electron Diffraction Technique. (1997)

Four symmetries, which are needed for the determination of a diffraction group by convergent-beam electron diffraction (CBED), were obtained from one selected-area CBED pattern. An inversion symmetry and a four-fold inversion symmetry were observed by selectedarea CBED technique. Coherent CBED patterns show the phase information of crystal structure factors. The phase relations between crystal structure factors for a non-mirror symmetry, a mirror symmetry and a glide symmetry were observed by coherent CBED.
Esculentins A & B, two new diterpenes from Casearia esculenta (2002)

The structures of esculentins A and B, isolated from the twigs of Casearia esculenta (Samydaceae), have been elucidated. They are found to be 18β,19β-diacetyloxy-18α,19α-epoxy-3,13(16),14-clerodatrien-2-one 1 and 18β,19β-diacetyloxy-18α,19α-epoxy-3,12,14-clerodatrien-2β-isovaleryloxy-6β,7α-diol 2 respectively by the analysis of 1D- and 2D-NMR spectra. Both 1 and 2 show weak cytokine inhibition activity.
ExPheWas: a browser for gene-based pheWAS associations (2021)

Structured Abstract Motivation The relationship between protein coding genes and phenotypes has the potential to inform on the underlying molecular function in disease etiology. We conducted a phenome-wide association study (pheWAS) of protein coding genes using a principal components analysis-based approach in the UK Biobank. Results We tested the association between 19,114 protein coding gene regions and 1,210 phenotypes including anthropometric measurements, laboratory biomarkers, cancer registry data, hospitalization and death record codes and algorithmically-defined cardiovascular outcomes. We report the pheWAS results in a user-friendly web-based browser. Taking atrial fibrillation, a common cardiac arrhythmia, as an example, ExPheWas identified genes that are known drug targets for the treatment of arrhythmias and genes involved in biological processes implicated in cardiac muscle function. We also identified MYOT as a possible atrial fibrillation gene. Availability and implementation The ExPheWas browser and API are available at http://exphewas.statgen.org/ Contact Marie-Pierre.Dube@mhi-rc.org
Cytofluorometric and cytomorphologic analysis of human bone marrow cells derived fromstromal cultures stimulated by granulocyte‐macrophage colony‐stimulating factor, interferon‐γ and splenopentin pentapeptide (1990)

We studied the influence of human recombinant granulocyte-macrophage colony-stimulating factor (hrGM-CSF), human recombinant interferon-gamma (hrIFN-gamma) and splenopentin pentapeptide (Sp-5), either alone or in combination, on the proliferation and differentiation of human bone marrow cells in modified Dexter's cultures. After 10, 14 and 21 days cells were analyzed by classical staining according to Pappenheim and by cytofluorometry with a set of different monoclonal antibodies. IFN-gamma inhibited the proliferation of progenitor cells and provided signals promoting monocytic differentiation, whereas GM-CSF induced the proliferation of blastoid elements which expressed HLA-DR and M2 (VIM-2 monoclonal antibody), but progressively lost surface CD34. Furthermore, an increase of CD15+ cells was also observed. When GM-CSF was tested in combination with IFN-gamma, it abolished the inhibitory effect of IFN-gamma and both cytokines synergized to promote the expression of CD11c, CD14 and M2 surface antigens. Sp-5 alone had only a marginal activity, but it potentiated the effects of GM-CSF. These findings suggest that GM-CSF may induce the transition from stem cells to committed myeloid progenitors. In contrast to IFN-gamma, Sp-5 can serve as an additional proliferative signal with negligible effects on cell maturation.
Pitch and Sense of Helix in Mixtures of Optically Active Azo or Azoxy Compounds and Nematic Liquid Crystal (1975)

Mixtures of azo or azoxy compound with asymmetric side chains and a nematic liquid crystal, and the pitch and sense of the helix were examined. Compounds with two identical optically active side chains exhibited the twisting power twice that of compounds with one optically active side chain. As a result, it was found that a feature value (M/Pc), where M, P and c are molecular weight, pitch and concentration by weight, is inherent to an optically active side chain and that the value is additive for compounds with two optically active side chains.
Microfabricated grooved substrates as platforms for bioartificial liver reactors (2005)

An extracorporeal bioartificial liver device has the potential to provide temporary hepatic support for patients with liver failure. Our goal was to optimize the flow environment for the cultured hepatocytes in a flat-plate bioreactor, specifically focusing on oxygen delivery using high medium flow rates while reducing the detrimental effects of the resulting shear stresses. We used photolithographic techniques to fabricate microgrooves onto the underlying glass substrate. The microgrooves, perpendicular to the axial flow direction, protected the hepatocytes from the shear stress induced by the flowing medium. Using finite element analysis, we found that the velocity gradient change near the cell surface (i.e., bottom of the grooves) was smaller than that near the top surface of the flow channel, indicating that the grooves would provide protection to the attached cells from the mechanical effects of the flowing medium. We also determined that the shear stress at the cell surface could be reduced by as much as 30 times (channel height of 100 microm) in the grooved-substrate (0.5 dyn/cm(2)) bioreactor compared to the flat-substrate (15 dyn/cm(2)) bioreactor for a medium flow rate of 4.0 mL/min. Albumin and urea synthesis rates of hepatocytes cocultured with 3T3-J2 fibroblasts remained stable over 5 days of perfusion in the grooved-substrate bioreactor, whereas in the flat-substrate bioreactor they decreased over the same time period. These studies indicate that under "high" flow conditions the microgrooved-substrate in the bioreactor can decrease the detrimental effects of shear stress on the hepatocytes while providing adequate oxygenation, thereby resulting in stable liver-specific function.