gebhart/patrepeval huggingface dataset:
In Situ Rheo-NMR Investigations of Shear-Dependent <sup>1</sup>H Spin Relaxation in Polymer Solutions (2001)

The NMR response of a polymeric fluid to the application of shear field has been studied by using specially designed shearing devices conforming to a couette geometry. We show that an air-driven high-resolution liquids sample spinning arrangement, available on any high-resolution liquid-state NMR spectrometer, is easily adapted to set up a couette cell and impart shear rates (γ̇) of ca. 18−450 s-1 on polymer solutions of low viscosity. This simple but elegant method has allowed us to conduct in situ rheo-NMR relaxation experiments on poly(acrylamide) solution where we observe large changes in proton spin−lattice relaxation times in the sheared state of the polymer. The enhanced relaxation rates are rationalized on the basis of the release of entanglements due to breaking of intermolecular hydrogen bonds, which decrease the rotational correlation times for the molecular motions. By identifying from the 2-D NOESY experiments that the molecular mobility occurs in the long correlation regime (ω0τc ≫ 1), we gather evidence from in situ rheo-NMR measurements that the imposition of shear reduces the motional correlation time τc with increasing shear rate. We also find that the restoration of relaxation times, upon cessation of shear, is seen to occur over a much larger time scale (ca. 20 h). This has been interpreted by taking recourse to the postulate of the slow re-formation process in the framework of the energetically cross-linked transient network model (ECTN) proposed recently by our school.
Absolute stability analysis for a linear time varying system of special form (2016)

The problem of finding an estimate of the greatest sector of absolute stability for a class of linear time varying systems arising in studying stability of nonlinear control systems of special form is discussed. For a class of feedback coefficients, the estimate is shown to depend on only the differential order of the system.
<title>Optical Principles Of Information Retrieval From Optical And Nonoptical Recordings</title> (1979)

This paper reviews the optical principles upon which ultra-high resolution optical readout is predicated. Several different recorded geometries and optical readout techniques are discussed. The discussion includes a description of focus and track sensing techniques and photodetector configurations. As an example of these optical principles the application of optical information retrieval to the quality control and monitoring of electromechanically mastered VideoDiscs is detailed and optical-readout performance assessed.
Genome of Ochrobactrum anthropi ATCC 49188 <sup>T</sup> , a Versatile Opportunistic Pathogen and Symbiont of Several Eukaryotic Hosts (2011)

Ochrobactrum anthropi is a common soil alphaproteobacterium that colonizes a wide spectrum of organisms and is being increasingly recognized as an opportunistic human pathogen. Potentially life-threatening infections, such as endocarditis, are included in the list of reported O. anthropi infections. These reports, together with the scant number of studies and the organism's phylogenetic proximity to the highly pathogenic brucellae, make O. anthropi an attractive model of bacterial pathogenicity. Here we report the genome sequence of the type strain O. anthropi ATCC 49188, which revealed the presence of two chromosomes and four plasmids.
AFI Suppressing Effect of an HTS RF Receive Filter with High Selectivity for Base Stations of Digital Wireless Communications (2008)

We report on suppressing adjacent-frequency interference (AFI) by using a RF receive bandpass-filter (BPF) with high-selectivity. By considering a high temperature superconducting (HTS) multi-pole BPF as a high selective BPF, the effect was estimated by numerical simulations. The simulations of the RF signals with an OFDM modulation transmitted to the demodulator via the BPF were carried out using the HTS BPF for 5GHz band. The results confirmed the improvement of the bit error rate (BER) characteristic with the assumed HTS BPF with the high multi-poles under a strong AFI.
Synthese von mehrfach substituierten Benzolsulfonsäurederivaten und Dihydrobenzothiadiazindioxydderivaten (1961)

Abstract Es wird die Synthese von 4‐Chlor‐6‐amino‐benzol‐disulfonsäuren(‐1,3)‐ bis‐diakyl‐(bzw. diaryl‐)‐amiden, welche durch Kondensation mit Formaldehyd in entspr. 6‐Chlor‐7‐sulfonamido‐3,4‐dihydro‐1,2,4‐benzothiadiazin‐1,1‐dioxyde übergehen, beschrieben.
Macroscopicity of quantum superpositions on a one-parameter unitary path in Hilbert space (2014)

We analyze quantum states formed as superpositions of an initial pure product state and its image under local unitary evolution, using two measurement-based measures of superposition size: one based on the optimal quantum binary distinguishability of the branches of the superposition and another based on the ratio of the maximal quantum Fisher information of the superposition to that of its branches, i.e., the relative metrological usefulness of the superposition. A general formula for the effective sizes of these states according to the branch-distinguishability measure is obtained and applied to superposition states of $N$ quantum harmonic oscillators composed of Gaussian branches. Considering optimal distinguishability of pure states on a time-evolution path leads naturally to a notion of distinguishability time that generalizes the well-known orthogonalization times of Mandelstam and Tamm and Margolus and Levitin. We further show that the distinguishability time provides a compact operational expression for the superposition size measure based on the relative quantum Fisher information. By restricting the maximization procedure in the definition of this measure to an appropriate algebra of observables, we show that the superposition size of, e.g., NOON states and hierarchical cat states, can scale linearly with the number of elementary particles comprising the superposition state, implying precision scaling inversely with the total number of photons when these states are employed as probes in quantum parameter estimation of a 1-local Hamiltonian in this algebra.
Wide tuning range CMOS quadrature ring oscillator of best figure of merit (2009)

This paper presents a low phase noise quadrature ring oscillator with new start-up circuit. The oscillator architecture is two-stage differential ring with additional pair of transition-assistance inverters. The circuit was implemented in 0.18 µm CMOS technology and the measured tuning range of the prototype device is from 1.7 GHz to 5.5 GHz and figure of merit (FOM) is −162 dB. The proposed area of application is the core of the local oscillator in a multi-standard wireless transceiver.
Unifying the spatial epidemiology and molecular evolution of emerging epidemics (2012)

We introduce a conceptual bridge between the previously unlinked fields of phylogenetics and mathematical spatial ecology, which enables the spatial parameters of an emerging epidemic to be directly estimated from sampled pathogen genome sequences. By using phylogenetic history to correct for spatial autocorrelation, we illustrate how a fundamental spatial variable, the diffusion coefficient, can be estimated using robust nonparametric statistics, and how heterogeneity in dispersal can be readily quantified. We apply this framework to the spread of the West Nile virus across North America, an important recent instance of spatial invasion by an emerging infectious disease. We demonstrate that the dispersal of West Nile virus is greater and far more variable than previously measured, such that its dissemination was critically determined by rare, long-range movements that are unlikely to be discerned during field observations. Our results indicate that, by ignoring this heterogeneity, previous models of the epidemic have substantially overestimated its basic reproductive number. More generally, our approach demonstrates that easily obtainable genetic data can be used to measure the spatial dynamics of natural populations that are otherwise difficult or costly to quantify.
Lymphangiogenesis New Mechanisms (2002)

A mouse model has been developed to study lymphangiogenesis dissociated from angiogenesis. bFGF implanted in a mouse cornea at a concentration below the threshold to induce angiogenesis potently induces lymphangiogenesis. This model has permitted a study of cellular and molecular mechanisms of lymphangiogenesis.
Randomised double-blind trial of acyclovir (Zovirax) and adenine arabinoside in herpes simplex amoeboid corneal ulceration. (1985)

Fifty-one patients were treated in a dual-centre, double-blind comparison of acyclovir and adenine arabinoside in herpetic amoeboid (geographic) corneal ulceration. Twenty-four of the 25 patients receiving acyclovir healed in a mean time of 12.2 days, while 24 of the 26 patients treated with adenine arabinoside healed in a mean time of 11.0 days. There was no statistically significant difference between the two groups in terms of healing. A second analysis, excluding any patients who had received antiviral treatment immediately prior to entry into the study, showed that 18 of the 19 who received acyclovir healed in an average of 11.7 days and 18 of the 19 recipients of adenine arabinoside healed in a mean time of 11.2 days. Again the difference was not statistically significant.
Near-optimality of greedy set selection in the sampling of graph signals (2016)

Sampling has been extensively studied in graph signal processing, having found applications in estimation, clustering, and video compression. Still, sampling set selection remains an open issue. Indeed, although conditions for graph signal reconstruction from noiseless samples were derived, the presence of noise makes sampling set selection combinatorial and NP-hard in general. Performance bounds are available only for randomized sampling schemes, even though greedy search remains ubiquitous in practice. This work sets out to justify the success of greedy sampling by introducing the concept of approximate supermodularity and updating the classical greedy bound to account for this class of functions. Then, it quantifies the approximate supermodularity of two important reconstruction figures of merit, namely the log det of the error covariance matrix and the mean-square error, showing that they can be optimized with worst-case guarantees using greedy sampling.
Confocal Paraboloids: Some Comments (1974)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text William B. Wetherell and Matthew P. Rimmer, "Confocal Paraboloids: Some Comments," Appl. Opt. 13, 2192_1-2193 (1974) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
<title>Virtual-phase charge-coupled device imaging system for astronomy</title> (1991)

The CCD imaging system for use in ground telescopes was manufactured and tested. The two- level controller provides great flexibility in system operation. The results of system performance at the Crimea Observatory are presented.
An Allele of RFA1 Suppresses RAD52-Dependent Double-Strand Break Repair in Saccharomyces cerevisiae (1999)

An allele of RFA1, the largest subunit of the single-stranded DNA-binding complex RP-A, was identified as a suppressor of decreased direct-repeat recombination in rad1 rad52 double mutants. In this study, we used two LEU2 direct-repeat assays to investigate the mechanism by which the rfa1-D228Y allele increases recombination. We found that both intrachromatid and sister chromatid recombination are stimulated in rfa1-D228Y strains. In a rad1 rad52 background, however, the majority of the increased recombination is caused by stimulation of deletion events by an intrachromatid recombination mechanism that is likely to be single-strand annealing. Studies in which an HO endonuclease cut was introduced between the two leu2 copies indicate that the rfa1-D228Y mutation partially suppresses the rad52 defect in recovering recombination products. Furthermore, molecular analysis of processing and product formation kinetics reveals that, in a rad52 background, the rfa1-D228Y mutation results in increased levels of recombinant products and the disappearance of large single-stranded intermediates characteristic of rad52 strains. On the basis of these results, we propose that in the absence of wild-type Rad52, the interaction of RP-A with single-stranded DNA inhibits strand annealing, and that this inhibition is overcome by the rfa1-D228Y mutation.
Antibodies to synthetic peptides based on band 3 motifs react specifically with<i>Plasmodium falciparum</i>(humanmalaria)-infected erythrocytes and block cytoadherence (1994)

Rabbit polyclonal and mouse monoclonal antibodies (Mabs) prepared against synthetic peptides patterned on exofacial loops 3 (amino acids 546-555) and 7 (821-834) of the human anion transport protein band 3 inhibited the cytoadherence of Plasmodium falciparum-infected erythrocytes to C32 amelanotic melanoma cells. Mabs directed against exofacial loop 4 (amino acids 628-642) did not inhibit adherence to a significant degree. The murine Mabs recognized only P. falciparum-infected cryptic in uninfected erythrocytes.
Directed differentiation of progenitor cells towards an islet-cell phenotype. (2012)

Exogenous insulin administration and oral anti-diabetic drugs are the primary means of treating diabetes. However, tight glycaemic control, with its inherent risk of hypoglycaemia, is required to prevent the microvascular and macrovascular complications of the disease. While islet or pancreas transplantations offer a longer-term cure, their widespread application is not possible, primarily because of a lack of donor tissue, the burden of life-long immunosuppression, and eventual graft rejection. The rapid increase in the incidence of diabetes has promoted the search for alternative cell-based therapies. Here we review recent advances in the directed differentiation of both endocrine and non-endocrine progenitors towards an islet-like phenotype.
Production of emulcyan by Phormidium J-1: its activity and function (1985)

Phormidium J-1, a hydrophobic, benthic cyanobacterium, produced a polymeric extracellular emulsifying agent (emulcyan). The activity of emulcyan was pH- and temperature-dependent and required the presence of cations. Emulcyan was excreted into the extracellular milieu at the stationary phase of growth. Cell surface hydrophobicity of Phormidium decreased as the cells aged. A decrease was also obtained by adding emulcyan to young hydrophobic cells. It is suggested that emulcyan masks cell surface hydrophobicity thus causing detachment of the cells. Phormidium cells attached to hydrophobic phenyl-sepharose beads were detached by addition of emulcyan. We propose that production of emulcyan by Phormidium cells serves as a dispersal strategy by this non-hormogonia-producing cyanobacterium.
Pseudocholinesterase hyperactivity with succinylcholine resistance: An unusual cause of difficult intubation (1997)

We describe a case of difficult intubation, possibly due to marked pseudocholinesterase hyperactivity that caused rapid inactivation of succinycholine. Possible causes of difficult intubation and pseudocholinesterase hyperactivity are discussed. Literature on genetic variants associated with markedly increased pseudocholinesterase activity are reviewed. It is concluded that pseudocholinesterase hyperactivity may be a rare cause of difficult intubation. We recommend that pseudocholinesterase activity should be determined in all patients who appear to be resistant to the action of normal doses of succinylcholine or mivacurium.
Reactively and Anticipatory Behaving Agents for Artificial Life Simulations (2010)

Reactive behavior is still considered and the exact opposite for the anticipatory one. Despite the advances on the field of anticipation there are little thoughts on relation with the reactive behavior, the similarities and where the boundary is. In this article we will present our viewpoint and we will try to show that reactive and anticipatory behavior can be combined. This is the basic ground of our unified theory for anticipatory behavior architecture. We still miss such compact theory, which would integrate multiple aspects of anticipation. My multi‐level anticipatory behavior approach is based on the current understanding of anticipation from both the artificial intelligence and biology point of view. As part of the explanation we will also elaborate on the topic of weak and strong artificial life. Anticipation is not matter of a single mechanism in a living organism. It was noted already that it happens on many different levels even in the very simple creatures. What we consider to be important for our work and what is our original though is that it happens even without voluntary control. We believe that this is novelty though for the anticipation theory. Naturally research of anticipation was in the beginning of this decade focused on the anticipatory principles bringing advances on the field itself. This allowed us to build on those, look at them from higher perspective, and use not one but multiple levels of anticipation in a creature design. This presents second original though and that is composition of the agent architecture that has anticipation built in almost every function. In this article we will focus only on first two levels within the 8‐factor anticipation framework. We will introduce them as defined categories of anticipation and describe them from theory and implementation algorithm point of view. We will also present an experiment conducted, however this experiment serves more as explanatory example. These first two levels may seem trivial, but growing interest in implicit anticipation and reactive anticipation in last two years suggest that this is worthwhile topic. The simplicity of them is intentional to demonstrate our way of thinking and understanding of the topic. The comparison with other results is possible only when these levels are integrated into the complex architecture, as will be shown below that can also act as standalone.
In Vitro and In Vivo Potentiation of Artemisinin and Synthetic Endoperoxide Antimalarial Drugs by Metalloporphyrins (2000)

The in vitro potentiation of artemisinin by synthetic manganese porphyrin complexes has been recently reported (F. Benoit-Vical, A. Robert, and B. Meunier, Antimicrob. Agents Chemother. 43:2555-2558, 1999). Since the activity of artemisinin and synthetic antimalarial endoperoxides is related to their interaction with heme (S. R. Meshnick, A. Thomas, A. Ranz, C. M. Xu, and H. Z. Pan, Mol. Biochem. Parasitol. 49:181-190, 1991), an improvement of their efficiency may be expected in the presence of a synthetic metalloporphyrin having the same activating role as endogenous heme. With the aim to boost the activity of antimalarial endoperoxide drugs, we were thus led to evaluate the in vitro and in vivo potentiation of natural and synthetic drugs of this family by a nontoxic and cheap metalloporphyrin. The potentiation of artemisinin, beta-artemether, and arteflene (Ro 42-1611) by synthetic heme models is reported. In vitro studies on the chloroquine-resistant Plasmodium falciparum FcB1-Columbia strain indicate a synergistic effect of the manganese complex of meso-tetrakis(4-sulfonatophenylporphyrin) (Mn-TPPS) on the activity of artemisinin or beta-artemether, whereas this heme model has no influence on the activity of arteflene. A significant synergistic effect on rodent malaria was also observed in vivo between artemisinin and Mn-TPPS using Plasmodium vinckei petteri strain.
Time-resolved spectroscopy of single excitons bound to Te isoelectronic pairs in ZnSe (2005)

Single Te pairs in ZnSe:Te were probed using time-resolved photoluminescence spectroscopy. While the bright exciton states consist of a linearly polarized doublet, the dark states are manifested in a biexponential luminescence decay.
The self-sufficient solar house Freiburg (1994)

The Fraunhofer Institute for Solar Energy Systems has built a Self-Sufficient Solar House (SSSH) in Freiburg, Germany. The aim of the project is to provide the entire energy demand for heating, domestic hot water, electricity and cooking by the sun. The combination of highly efficient solar systems with conventional means to save energy is the key to the successful operation of the house. With transparent insulation of building walls utilizing winter insulation the heating demand of the building is almost zero. Small size seasonal high energy storage is accomplished by electrolysis of water and pressurized storage of hydrogen and oxygen. The energy for electricity and hydrogen generation is supplied by solar cells. Hydrogen can be reconverted to electricity with a fuel cell or used for cooking. It also serves as a back-up for low temperature heat. There are provisions for short-term storage of electricity and optimal routing of energy. The SSSH is occupied by a family. An intensive measurement program is being carried out. The data are used for the validation of the dynamic simulation calculations, which formed the basis for planning the SSSH. 28 refs., 42 figs., 9 tabs.
Identification of the Regulatory Logic Controlling Salmonella Pathoadaptation by the SsrA-SsrB Two-Component System (2010)

Sequence data from the past decade has laid bare the significance of horizontal gene transfer in creating genetic diversity in the bacterial world. Regulatory evolution, in which non-coding DNA is mutated to create new regulatory nodes, also contributes to this diversity to allow niche adaptation and the evolution of pathogenesis. To survive in the host environment, Salmonella enterica uses a type III secretion system and effector proteins, which are activated by the SsrA-SsrB two-component system in response to the host environment. To better understand the phenomenon of regulatory evolution in S. enterica, we defined the SsrB regulon and asked how this transcription factor interacts with the cis-regulatory region of target genes. Using ChIP-on-chip, cDNA hybridization, and comparative genomics analyses, we describe the SsrB-dependent regulon of ancestral and horizontally acquired genes. Further, we used a genetic screen and computational analyses integrating experimental data from S. enterica and sequence data from an orthologous regulatory system in the insect endosymbiont, Sodalis glossinidius, to identify the conserved yet flexible palindrome sequence that defines DNA recognition by SsrB. Mutational analysis of a representative promoter validated this palindrome as the minimal architecture needed for regulatory input by SsrB. These data provide a high-resolution map of a regulatory network and the underlying logic enabling pathogen adaptation to a host.
Back Matter (2009)

Back matter pages come after the papers or chapters in a published work and may include appendixes, references, and indexes.
Waveguide electro-optic modulators based on organic self-assembled superlattices (SAS) (2003)

Summary from only given. A prototype symmetric waveguide EO modulator was proposed. We show the cross section of the waveguide structure of the EO modulator based on GaAs substrate. A 0.5 /spl mu/m gold layer (the lower electrode) was deposited on the GaAs substrate. The SAS layers were intrinsically accentric, and second harmonic generation (SHG) and EO effects have been demonstrated without external electric field poling process.