gebhart/patrepeval huggingface dataset:
An efficient design method for vector broadcast systems with common information (2004)

We consider the problem of determining an optimal transmission scheme for broadcasting a common message over vector channels, given (perfect) channel knowledge at both the receive and transmit ends. We provide an efficient method for jointly designing a linear transmitter and and a set of linear receivers so as to minimize a weighted mean square error (WMSE) of the data estimates. The computational efficiency follows from the convex formulations that we develop. These formulations enable utilization of highly efficient interior point methods. For diagonal channel matrices, which appear in multicarrier systems that employ cyclic prefixing, we show that the optimal transmitter is obtained by subcarrier allocation and power loading. The set of minimum MSE transceivers for a vector broadcast system is parametrized by a unitary matrix degree of freedom. For the case of diagonal systems, we show how this unitary matrix can be chosen so that the symbol error rate is minimized (over the given set). This optimal unitary matrix ensures that, for each receiver, the subcarrier signal-to-noise ratios (SNRs) are all the same. Simulations indicate that our designs can provide significantly improved performance over standard designs.
New visual acuity chart for patients with macular hole. (2001)

Our results suggest that the standard acuity chart, when administered before surgery, underestimates the patient's potential visual acuity after surgery, whereas the MLAC provides a better estimate of the patient's postoperative acuity. The MLAC can be a useful tool for measuring visual acuity in patients with macular hole.
Aspects of Major Bone and Joint Replacement and Its Cost Effectiveness (1979)

Certain pathological conditions usually considered to require amputation of a limb may be treated by prosthetic replacement of the long bones and associated joints. The clinical criteria are reviewed and the materials for the prosthesis are discussed. An analysis of cost-effectiveness is also presented comparing such surgery to amputation and the associated rehabilitation.
Effect of simvastatin on CSF Alzheimer disease biomarkers in cognitively normal adults (2017)

Simvastatin-related reductions in CSF p-tau<sub>181</sub> concentrations may be modulated by LDL cholesterol. The potential disease-modifying effects of simvastatin on CSF phospho-tau should be further investigated in persons with hypercholesterolemia.
Reproducibility of Contact Line Motion on Surfaces Exhibiting Contact Angle Hysteresis (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReproducibility of Contact Line Motion on Surfaces Exhibiting Contact Angle HysteresisG. D. Nadkarni and S. GaroffCite this: Langmuir 1994, 10, 5, 1618–1623Publication Date (Print):May 1, 1994Publication History Published online1 May 2002Published inissue 1 May 1994https://pubs.acs.org/doi/10.1021/la00017a049https://doi.org/10.1021/la00017a049research-articleACS PublicationsRequest reuse permissionsArticle Views309Altmetric-Citations33LEARN 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
Enhancement of Fine Line Print Resolution due to Coating of Screen Fabrics (2009)

In LTCC technology, printing is the most reliable and cost-effective process for line deposition on ceramic layers. An enhancement of resolution is required to realize modules in the highest frequency range which requires small lines and distances. The fine line print resolution is limited by two factors of processing. One is paste rheology itself, including viscosity particle size and thixotropic behavior. The other factor is the screen with limitations in mesh size, wire thickness, calendering, and angle of the screen fabric in the frame. From the viewpoint of the screen, the idea was to improve the fabric by coating. It can be shown that especially in concentric circles, even with fine line screens, arrays occur where no printing happens. These paste free areas exhibit a moiré effect and follow exactly the string angle of the screen. This is caused by the crossing of the strings of the fabric which does not allow a passing of the paste due to very narrow gaps. To facilitate the paste passing, the idea is to coat the fabric with a hydrophobic surface, so that the adhesion of the paste on the fabric wires becomes drastically reduced and therefore the detachment is enhanced. This coating is only appropriate for the bottom side of the screen and the spaces between the meshes. On the topside, the thixotropic effect of the paste requires good adhesion to achieve the necessary shear effect. Therefore, the topside of the screen should be coated hydrophilic to provide a significant paste adhesion to the screen, which is necessary for this shear stress. This development is supported by numeric simulation to predict the appropriate direction for these coated screens to improve the paste rheology.
Erratum: Application of monoclonal antibodies to measure metabolism of an anti‐trypanosomal compound in vitro and in vivo (2011)

In Volume 24, Issue 3, 2010, in the article “Application of monoclonal antibodies to measure metabolism of an anti-trypanosomal compound in vitro and in vivo,” by Goldsmith et al., NIAID grant 5U01AI075641 was mistakenly omitted. This erratum acknowledges that grant.
Sterically Encumbered Iron(II) Thiolate Complexes: Synthesis and Structure of Trigonal Planar [Fe(SR)3]- (R = 2,4,6-t-Bu3C6H2) and Moessbauer Spectra of Two- and Three-Coordinate Complexes (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSterically Encumbered Iron(II) Thiolate Complexes: Synthesis and Structure of Trigonal Planar [Fe(SR)3]- (R = 2,4,6-t-Bu3C6H2) and Moessbauer Spectra of Two- and Three-Coordinate ComplexesFrederick M. MacDonnell, Karin Ruhlandt-Senge, Jeffrey J. Ellison, R. H. Holm, and Philip P. PowerCite this: Inorg. Chem. 1995, 34, 7, 1815–1822Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published inissue 1 March 1995https://pubs.acs.org/doi/10.1021/ic00111a032https://doi.org/10.1021/ic00111a032research-articleACS PublicationsRequest reuse permissionsArticle Views910Altmetric-Citations114LEARN 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-AlertscloseSupporting Info (2)»Supporting Information Supporting Information Get e-Alerts
SEISMIC RETROFIT OF BRIDGE COLUMNS WITH CFRP JACKETS (2001)

Experimental research was conducted to investigate the effectiveness of carbon fibre reinforced polymer (CFRP) jackets in retrofitting bridge columns with splice deficiencies. Full-size bridge columns were tested under simulated seismic loading. The columns were subjected to constant axial compression to simulate gravity loading, and incrementally increasing lateral deformation reversals to simulate seismic loading. The specimens represented typical bridge columns between the footing and the point of inflection. Tests of as-built columns were first conducted to assess their deformability in the inelastic range. The specimens included circular and square cross-sections with reinforcement arrangements that were representative of the majority of concrete columns in practice. The longitudinal reinforcement was spliced near the base. These columns had limited deformability and failed shortly after developing 1% lateral drift. Companion columns with identical properties were retrofitted with CFRP jackets and tested to investigate the effectiveness of the retrofit technique. The results indicated that CFRP jacketing was effective in circular columns in improving bond between reinforcement and concrete within the plastic hinge region. The lateral deformability of the circular column improved beyond 6% drift ratio. The CFRP jacket however was not as effective in the square column. The improvement observed in this column was limited to 2% lateral drift, beyond which there was a clear deterioration of the bond within the splice region, as evidenced by significant and rapid strength decay. For the covering abstract see ITRD E123557.
The biological effects of isoform-specific PI3-kinase inhibition. (2010)

The four isoforms of class I phosphatidylinositol-3-kinase (PI3K) were originally thought to be redundant in function; however, further research and new technologies have revealed that each subunit has distinct characteristics. In the past decade the number of PI3K inhibitors has increased from a few agents with unacceptable promiscuity and pharmacological properties, to a family of selective agents that are either progressing through experimental development or are in clinical trials. These agents, with two notable exceptions, target multiple members of the PI3K class I isoforms. As data become increasingly available, the concept that inhibiting a single PI3K isoform may offer improved therapeutic benefit, while eliminating the potentially negative effects of pan-isoform inhibition, is driving efforts to develop more specific inhibitors. However, questions remain regarding the best isoform to inhibit for maximum benefit in different pathological settings, and whether increased specificity may lead to a loss in efficacy as a result of isoform redundancy in some settings. This review discusses the current understanding of individual PI3K isoforms in physiology and pathological states, as well as the status of PI3K inhibitors in preclinical and clinical development.
A Hybrid Control Strategy Based on Lagging Reactive Power Compensation for Vienna-Type Rectifier (2020)

The Vienna-type rectifier is widely used in many applications due to the merits of controllable dc-link voltage, realizable three-level operation, and compact size. However, the input currents near the zero-crossing point are distorted inevitably due to its special topology. Based on the analysis of the causes of current distortion, a lagging reactive power compensation method is proposed. The d-q-axis current models are developed, and two finite-time current controllers are designed to enhance the interference suppression performance. The asymptotic convergence of the d-q-axis current systems is proved, respectively. In addition, neutral point potential balancing is achieved by employing a proportional controller without increasing the cost of the system. The validity of the proposed hybrid control strategy has been verified by simulation and experimental results. Compared with the conventional strategy, this new hybrid control strategy can help to achieve excellent performance and stronger disturbance rejection.
Cascadable CMOS current gain cell with gain insensitive phase shift (1993)

It is shown that by using a complementary circuit topology, electronically variable gain in combination with a gain insensitive phase shift can be achieved. A cascadable CMOS current gain cell based on this concept is proposed, together with a linearisation technique for this circuit
Low-Resistivity Zinc Selenide for Heterojunctions (1986)

Magnetron reactive sputtering enables doping of this semiconductor. Proposed method of reactive sputtering combined with doping shows potential for yielding low-resistivity zinc selenide films. Zinc selenide attractive material for forming heterojunctions with other semiconductor compounds as zinc phosphide, cadmium telluride, and gallium arsenide. Semiconductor junctions promising for future optoelectronic devices, including solar cells and electroluminescent displays. Resistivities of zinc selenide layers deposited by evaporation or chemical vapor deposition too high to form practical heterojunctions.
Phase shift switching scheme for DC/DC boost converter with switches in parallel (2008)

In general, the interleaved structures in boost converters are able to reduce input current ripple and output voltage ripple leading to smaller size of input/output filters, to have fault tolerance, to take higher bandwidth, and to minimize EMI from reverse recovery current in output rectifier by adopting discontinuous inductor current mode in each interleaved converter. In this paper, a phase shift switching scheme of paralleled switches for boost converter is proposed in which one inductor, two paralleled switches, and one output rectifier comprise the boost converter and provide doubled ripple frequency in current through the inductor, which can contribute to higher system bandwidth, fault tolerance, and reduction in the size of the inductor and input/output filter.
Intracellular glutathione heterogeneity in L1210 murine leukemia sublines made resistant to dna‐interacting anti‐neoplastic agents (1993)

Intracellular glutathione (GSH) content was measured by flow cytometry using monochlorobimane (mBCl) and by the enzymatic assay in a set of 6 sublines of murine L1210 leukemia cells made resistant to DNA-interacting agents having distinct mechanisms of action: L-phenylalanine mustard (L-PAM), 1,3-bis(2-chloroethyl)-I-nitrosourea (BCNU), cisplatin (DDP), N-deformyl-N-(4-N,N-bis(2-chloroethylamino) benzoyl) distamycin A (FCE 24517), doxorubicin (DX) and 3'-deamino-3' (2-methoxy-4-morpholinyl)-doxorubicin (FCE 23762). A significant correlation was demonstrated between the mean intracellular mBCl fluorescence values measured by flow cytometry and levels of GSH measured by the classical enzymatic assay, despite the possible influence of glutathione-S-transferases and of other thiols on the mBCl fluorescence. Although less specific, the flow cytometric method is more informative than the enzymatic assay, allowing detection of fluorescence distributions, which we proved to be characteristic of each subline. In order to assess a procedure enabling a quantitative analysis to be made of intercellular GSH heterogeneity, we propose the use of appropriate thresholds and parameters of the mBCl flow cytometric distribution. By use of this analysis procedure, distinct types of alterations, with respect to the heterogeneity distribution of the parental L1210 cell line, have been evidenced in resistant cells. A uniform increase in mBCl fluorescence was observed among cells of the sublines resistant to L-PAM and FCE-24517. The mean mBCl fluorescence increase in sublines resistant to DX and DDP was due to a higher number of cells with fairly high mBCl fluorescence, but still within the range spanned by the parental cell line. A less heterogeneous mBCl fluorescence distribution was found in the L1210 subline resistant to FCE 23762, which was, however, similar to a cloned sensitive line. Though GSH was linked to the principal cause of drug resistance only in the L-PAM-resistant cell line, alterations in heterogeneity, as detected by mBCl fluorescence distributions, were found in 5 out of 6 resistant lines.
DFT-Based Screening for a New Electro-Catalyst to Convert Nitrigen to Ammonia at Room Temperature and Ambient Pressure (2015)

Computational screening for new catalysts that are stable, active and selective towards electrochemical reduction of nitrogen to ammonia at room temperature and ambient pressure is presented from a range of transition metal nitride surfaces. Density functional theory (DFT) calculations are used to study the thermochemistry of cathode reaction so as to construct the free energy profile and to predict the required onset potential via the Mars-van Krevelen mechanism. Stability of the surface vacancy, stability of the catalyst against decomposition as well as poisoning possibility under operating conditions are investigated towards catalyst engineering for distributable and sustainable ammonia formation. The most promising candidates turned out to be the (100) facets of rocksalt structure of VN, CrN, NbN and ZrN that should be able to form ammonia at -0.51 V, -0.76 V, -0.65 V and -0.76 V vs. SHE, respectively. Another interesting result of the current work is that for the introduced nitride candidates, hydrogen evolution is no longer the competing reaction; thus, high formation yield of ammonia is expected at low onset potentials. Figure 1
Molecular pathways used by platelets to initiate and accelerate atherogenesis (2007)

An expanding body of evidence continues to build on the role of platelets as initial actors in the development of atherosclerotic lesions. Platelets bind to leukocytes, endothelial cells, and circulating progenitor cells and initiate monocyte transformation into macrophages. Therefore platelets regulate the initiation, development and total extent of atherosclerotic lesions.
Characterization of the microbunch time structure of proton pencil beams at a clinical treatment facility (2016)

Proton therapy is an advantageous treatment modality compared to conventional radiotherapy. In contrast to photons, charged particles have a finite range and can thus spare organs at risk. Additionally, the increased ionization density in the so-called Bragg peak close to the particle range can be utilized for maximum dose deposition in the tumour volume. Unfortunately, the accuracy of the therapy can be affected by range uncertainties, which have to be covered by additional safety margins around the treatment volume. A real-time range and dose verification is therefore highly desired and would be key to exploit the major advantages of proton therapy. Prompt gamma rays, produced in nuclear reactions between projectile and target nuclei, can be used to measure the proton's range. The prompt gamma-ray timing (PGT) method aims at obtaining this information by determining the gamma-ray emission time along the proton path using a conventional time-of-flight detector setup. First tests at a clinical accelerator have shown the feasibility to observe range shifts of about 5 mm at clinically relevant doses. However, PGT spectra are smeared out by the bunch time spread. Additionally, accelerator related proton bunch drifts against the radio frequency have been detected, preventing a potential range verification. At OncoRay, first experiments using a proton bunch monitor (PBM) at a clinical pencil beam have been conducted. Elastic proton scattering at a hydrogen-containing foil could be utilized to create a coincident proton-proton signal in two identical PBMs. The selection of coincident events helped to suppress uncorrelated background. The PBM setup was used as time reference for a PGT detector to correct for potential bunch drifts. Furthermore, the corrected PGT data were used to image an inhomogeneous phantom. In a further systematic measurement campaign, the bunch time spread and the proton transmission rate were measured for several beam energies between 69 and 225 MeV as well as for variable momentum limiting slit openings. We conclude that the usage of a PBM increases the robustness of the PGT method in clinical conditions and that the obtained data will help to create reliable range verification procedures in clinical routine.
An Ultra Low Power Low Noise Chopper Amplifier for Wireless BEG (2006)

The realisation of wireless EEG systems suitable for long term monitoring requires low noise, low power and low voltage circuit design. Presented in this paper is a 1 V, 1.4 <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> W chopper amplifier implemented in a 0.35 <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> m CMOS process. The achieved input referred noise voltage is 1.5 <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">μ</i> V rms and the gain is 44 dB. Since the dynamic range of the input EEG signal is dominated by the offset voltage generated at the electrode-tissue interface, a novel input high pass filter has been designed. The required filter capacitance is limited to 40 pF by recognising that the input chopper switches can be combined with the amplifier input capacitance to emulate a large resistance.
A DTA/GC for the in Situ Identification of the Martian Surface Material (1993)

The composition and mineralogy of the Martian surface material remain largely unknown. To determine its composition and mineralogy, several techniques are being considered for in situ analyses of the Martian surface material during missions to Mars. We have successfully developed, constructed, and tested a laboratory DTA/GC. The DTA is a Dupont model 1600 high temperature DTA coupled with a GC equipped with a MID detector. The system is operated by a Sun Sparc 11 workstation. When gas evolves during a thermal chemical event, it is shunted into the GC and the temperature is recorded in association with the specific thermal event. We have used this laboratory instrument to define experimental criteria necessary for determining the composition and mineralogy of the Martian surface in situ (e.g., heating of sample to 1100 C to distinguish clays). Our studies indicate that DTA/GC will provide a broad spectrum of mineralogical and evolved gas data pertinent to exobiology, geochemistry, and geology.