gebhart/patrepeval huggingface dataset:
Crystal and Layer Structures of Ferroelectric Oligomer Thin Films (2009)

The crystal structure of ferroelectric vinylidene fluoride (VDF) oligomer [CF3(CH2CF2)nI] (n = 12) thin films has been investigated in detail. Films with molecular orientations parallel and perpendicular to the silicon substrate were prepared by deposition at substrate temperatures of 120 K (low-Ts) and 310 K (high-Ts), respectively. X-ray diffraction revealed a base-centered monoclinic structure with space group Cm and lattice parameters a = 0.488 nm, b = 0.865 nm, and c = 3.137/sin β nm (the monoclinic angle β could not be evaluated). The average density of both films determined from X-ray reflectivity (2.0−2.1 g/cm3) was lower than that calculated from the lattice parameters (2.42 g/cm3) due to the surface topology. Small crystal grains are loosely packed in the low-Ts film, while large hexagonal grains increase the surface roughness in the high-Ts film. In both films, furthermore, the even lower density (1.5−1.7 g/cm3) near the film−substrate interface suggests that the molecules are aligned vertically in this region.
1I-2 Capacitive Micromachined Ultrasonic Transducers for High Intensity Focused Ablation of Upper Abdominal Tumors (2006)

We present the development of a capacitive micromachined ultrasonic transducer (CMUT) array for noninvasive focused ultrasound ablation of lower abdominal cancers under MR-guidance. While piezoelectric transducers have been traditionally used for high intensity focused ultrasound (HIFU), recent advances in capacitive micromachined ultrasonic transducers (CMUTs) have made them highly competitive with regard to costs, fabrication flexibility, and performance. Even current imaging CMUTs have shown capability of HIFU operation through high power and continuous wave operation. In this paper, we will show our experiments with current imaging CMUTs operated in HIFU mode. In addition, we will show the design and development of CMUT membranes and a transducer array specifically for HIFU ablation lower abdominal cancers
Structure of the gamma heavy chain of the outer arm dynein from Chlamydomonas flagella. (1988)

We describe here the vanadate-dependent photocleavage of the gamma heavy chain from the Chlamydomonas outer arm dynein and the pathways by which this molecule is degraded by endoproteases. UV irradiation in the presence of ATP, Mg2+, and vanadate cleaves the gamma chain at a single site (termed V1) to yield fragments of Mr 235,000 and 180,000. Irradiation in the presence of vanadate and Mn2+ results in cleavage of the gamma chain at two other sites (termed V2a and V2b) to yield fragment pairs of Mr 215,000/200,000 and 250,000/165,000. The mass of the intact chain is therefore estimated to be 415,000 D. We have located the major tryptic and staphylococcal protease cleavage sites in the gamma chain, determined the origins of the resulting fragments, and identified the regions which contain the epitopes recognized by two different monoclonal antibodies. Both antibodies react with the smaller V1 fragment; the epitope recognized by antibody 25-8 is within 9,000-52,000 D of the original gamma-chain terminus contained in that fragment, whereas that recognized by antibody 12 gamma B is within 16,000 D of the V1 site. The data permit the construction of a linear map showing the structural organization of the polypeptide. The substructure of the gamma chain is similar to that of the alpha and beta chains of the outer arm dynein with regard to polarity as defined by the sites of vanadate-dependent photocleavage, and to that of the beta chain with regard to a highly sensitive protease site located approximately 10,000 D from the original terminus contained in the smaller V1 fragment.
Pegylated granulocyte colony-stimulating factor conveys long-term neuroprotection and improves functional outcome in a model of Parkinson’s disease (2012)

Recent proof-of-principle data showed that the haematopoietic growth factor granulocyte colony-stimulating factor (filgrastim) mediates neuroprotection in rodent models of Parkinson's disease. In preparation for future clinical trials, we performed a preclinical characterization of a pegylated derivative of granulocyte colony-stimulating factor (pegfilgrastim) in the mouse 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine model of Parkinson's disease. We determined serum and cerebrospinal fluid drug levels after subcutaneous injection. A single injection of pegfilgrastim was shown to achieve stable levels of granulocyte colony-stimulating factor in both serum and cerebrospinal fluid with substantially higher levels compared to repetitive filgrastim injections. Leucocyte blood counts were only transiently increased after repeated injections. We demonstrated substantial dose-dependent long-term neuroprotection by pegfilgrastim in both young and aged mice, using bodyweight-adjusted doses that are applicable in clinical settings. Importantly, we found evidence for the functionally relevant preservation of nigrostriatal projections by pegfilgrastim in our model of Parkinson's disease, which resulted in improved motor performance. The more stable levels of pegylated neuroprotective proteins in serum and cerebrospinal fluid may represent a general advantage in the treatment of chronic neurodegenerative diseases and the resulting longer injection intervals are likely to improve patient compliance. In summary, we found that pegylation of a neuroprotective growth factor improved its pharmacokinetic profile over its non-modified counterpart in an in vivo model of Parkinson's disease. As the clinical safety profile of pegfilgrastim is already established, these data suggest that evaluation of pegfilgrastim in further Parkinson's disease models and ultimately clinical feasibility studies are warranted.
Quantitative Proteomics Targeting Classes of Motif-containing Peptides Using Immunoaffinity-based Mass Spectrometry (2012)

The development of high-performance technology platforms for generating detailed protein expression profiles, or protein atlases, is essential. Recently, we presented a novel platform that we termed global proteome survey, where we combined the best features of affinity proteomics and mass spectrometry, to probe any proteome in a species independent manner while still using a limited set of antibodies. We used so called context-independent-motif-specific antibodies, directed against short amino acid motifs. This enabled enrichment of motif-containing peptides from a digested proteome, which then were detected and identified by mass spectrometry. In this study, we have demonstrated the quantitative capability, reproducibility, sensitivity, and coverage of the global proteome survey technology by targeting stable isotope labeling with amino acids in cell culture-labeled yeast cultures cultivated in glucose or ethanol. The data showed that a wide range of motif-containing peptides (proteins) could be detected, identified, and quantified in a highly reproducible manner. On average, each of six different motif-specific antibodies was found to target about 75 different motif-containing proteins. Furthermore, peptides originating from proteins spanning in abundance from over a million down to less than 50 copies per cell, could be targeted. It is worth noting that a significant set of peptides previously not reported in the PeptideAtlas database was among the profiled targets. The quantitative data corroborated well with the corresponding data generated after conventional strong cation exchange fractionation of the same samples. Finally, several differentially expressed proteins, with both known and unknown functions, many relevant for the central carbon metabolism, could be detected in the glucose- versus ethanol-cultivated yeast. Taken together, the study demonstrated the potential of our immunoaffinity-based mass spectrometry platform for reproducible quantitative proteomics targeting classes of motif-containing peptides.
An architecture for covert unmanned/unattended network discovery (2005)

A common problem in modern military communication networks is node discovery. In order to form a robust and efficient network each node needs to notify the network of its existence and, where security policies allow, to report its location. Furthermore, the process of fast and covert new node identification and recognition can help prevent friendly fire incidents. Once a network is established, new nodes often need to join the existing network, and they need a way to do this without compromising their own security, or the security of the network that they are joining. In addition, an established network requires a method of discovering the existence of another disjoint network that has migrated into communication range, so that a cross-link can be established between the networks in order to form a larger network. This process of nodes "discovering" each other is called <i>node discovery</i>, and this provides a capability that has many applications. A good node discovery scheme for military communication related applications has a number of properties including: fast and reliable network entry, covertness, secure and jam proof signaling, and range extension compared to the primary communications link itself. For the purposes of this paper the mechanism that provides node discovery will be called the Discovery Waveform. The Discovery Waveform has many applications such as terminal discovery for wireless communications, node discovery for establishing networking, and seemingly unrelated applications such as bursting time critical data.
Electrochemical Self-Assembly of Nanostructured CuSCN/Rhodamine B Hybrid Thin Film and Its Dye-Sensitized Photocathodic Properties (2014)

Nanostructured hybrid thin films of CuSCN and rhodamine B (RB) are electrochemically self-assembled (ESA) by cathodic electrolysis in an ethanol/water mixture containing Cu<sup>2+</sup>, SCN<sup>-</sup>, and RB. By selecting the solvent, Cu<sup>2+</sup>/SCN<sup>-</sup> ratio, and the concentration of RB, we demonstrate several control parameters in the film formation. High loading of RB into the film has been achieved to reach a CuSCN:RB volume ratio of approximately 2:1. The RB solid could almost completely be extracted from the hybrid film by soaking the film in dimethylacetamide (DMA), leading to a large increase of the surface area. The crystallographic orientation of the nanostructure with respect to the substrate can be controlled. Efficient quenching of fluorescence of RB has been observed for the CuSCN/RB hybrid film, implying hole injection from RB excited state to CuSCN. Photoelectrochemical study on the porous crystalline CuSCN obtained after the DMA treatment and sensitized with RB revealed sensitized photocathodic action under visible light illumination, indicating the potential usefulness of the porous CuSCN electrodes for construction of tandem dye-sensitized solar cells.
Three dimensional channel characterization for low altitude aerial vehicles (2010)

Based on the recent developments in the area of lithium polymer batteries and carbon fiber-reinforced plastic materials Micro Unmanned Aerial Vehicles (MUAV) have significantly gained in importance. Therefore, the use of MUAV based swarms is a feasible approach for remote sensing, surveillance and in particular for emergency and rescue missions [1][2]. Developing MUAVs which operate at low altitudes opens a new and challenging use case for both aerial mesh networks and existing cellular networks. The channel characteristics are crucial for the design of the required communication system. Since channel models for cellular networks typically assume that the users are at ground level, the use of these models for aerial deployment is a questionable attempt. For this reason, we are focusing in this paper on the channel characterization and analysis of an aerial mesh network based on a MUAV swarms. A choice of well known analytical and empirical channel models are adapted to the boundary conditions of low altitude platforms and subsequently validated by raytracing measurements in order to state their applicability.
Integration of electric drive vehicles with the power grid-a new application for vehicle batteries (2003)

Summary form only given as follows. Most personal transportation vehicles sit parked about 22 hours each day, during which time they represent an idle asset. Vehicles that incorporate electric propulsion could be utilized as power sources while parked because the drive systems include the fundamental elements for generating AC power. Utilizing idle vehicles to provide valuable electric power functions can produce a positive net revenue stream and create a powerful economic incentive to own an electrically-propelled vehicle. Production of valued power services from electrically-propelled vehicles has been demonstrated. The range of services is broad, and includes mobile AC power, backup power for homes or businesses, power generation during peak demand periods, and grid ancillary services such as spinning reserves, regulation, reactive power, and transmission stabilization. Most of these functions already have established economic value when procured from nonvehicular sources. Battery EVs and grid connected hybrid vehicles could provide the energy and power capabilities of their battery packs to the grid. On a daily basis, the battery energy throughput resulting from these grid services will be larger than the energy throughput resulting from driving. The income stream generated from the grid services is expected to more than cover the amortized wear-out costs of the battery for both grid services and driving. Because of the increased usage resulting from grid services, battery packs will have to be replaced more often for battery suppliers but the cost of the battery replacement will be covered by the value of the grid services provided for consumers and automakers. With vehicle-to-grid services, there is the potential to create a compelling new economic rationale for electric drive vehicles.
Post-radiation memory correction using differential subtraction for PHENIX (1996)

In colliders such as RHIC, the radiation levels are well below those of colliders such as LHC. If the radiation that is present affects the entire analog memory unit (AMU) in a uniform fashion, then a real-time correction should be able to be performed to correct any changes seen in the memory as well as the induced correlated noise from detector pickup, thus precluding the need for a more expensive rad-hard process. This paper will present testing on memories fabricated in a 'soft' process and exposed to ionizing radiation. We used a single pipeline as a reference to be subtracted on a cell-by-cell basis from each pipe during read out and investigated the spatial effects of using different pipes for the reference. Use of this method reduced the noise which was common to all pipes (common-mode noise) and thus reduced both common-mode input noise and pattern noise generated from address lines being exercised on the AMU.
Corrections to “The Role of Viscosity in the Impulse Diffraction Field of Elastic Waves Induced by the Acoustic Radiation Force” and “Supersonic Shear Imaging: A New Technique for Soft Tissue Elasticity Mapping” (2020)

This article presents corrections to J. Bercoff et al., "The role of viscosity in the impulse diffraction field of elastic waves induced by the acoustic radiation force," IEEE Trans. Ultrason., Ferroelectr., Freq. Control, vol. 51, no. 11, pp. 1523-1536, Nov. 2004, and J. Bercoff et al., "Supersonic shear imaging: A new technique for soft tissue elasticity mapping," IEEE Trans. Ultrason., Ferroelectr., Freq. Control, vol. 51, no. 4, pp. 396-409, Apr. 2004.
Relaxation dynamics, vibrational spectra, and solvent donor number effects for sodium(1+) interacting with acyclic polyethers (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelaxation dynamics, vibrational spectra, and solvent donor number effects for sodium(1+) interacting with acyclic polyethersPaul Firman, Edward M. Eyring, and Sergio PetrucciCite this: J. Phys. Chem. 1991, 95, 23, 9500–9507Publication Date (Print):November 1, 1991Publication History Published online1 May 2002Published inissue 1 November 1991https://pubs.acs.org/doi/10.1021/j100176a085https://doi.org/10.1021/j100176a085research-articleACS PublicationsRequest reuse permissionsArticle Views112Altmetric-Citations6LEARN 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 optionsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
140/180/204-Gbaud OOK Transceiver for Inter- and Intra-Data Center Connectivity (2018)

We report on an on-off keying intensity-modulation and direct-detection C-band optical transceiver capable of addressing all datacenter interconnect environments at well beyond 100 Gbaud. For this, the transmitter makes the use of two key InP technologies: a 2:1 double heterojunction bipolar transistor selector multiplexer and a monolithically integrated distributed-feedback laser traveling-wave electro-absorption modulator, both exceeding 100-GHz of 3-dB analog bandwidth. A preamplified 110-GHz PIN photodiode prior to a 100-GHz analog-to-digital converter complete the ultrahigh bandwidth transceiver module; the device under study. In the experimental work, which discriminates between intra- and inter-data center scenarios (dispersion unmanaged 120, 560, and 960 m; and dispersion-managed 10 and 80 km of standard single-mode fiber), we evaluate the bit-error rate evolution against the received optical power at 140, 180, and 204 Gbaud on-off keying for different equalization configurations (adaptive linear filter with and without the help of short-memory sequence estimation) and forward error correction schemes (hard-decision codes with 7% and 20% overhead); drawing conclusions from the observed system-level limitations of the respective environments at this ultrahigh baudrate, as well as from the operation margins and sensitivity metrics. From the demonstration, we highlight three results: successful operation with >6-dB sensitivity margin below the 7% error-correction at 140 Gbaud over the entire 100 m-80 km range with only linear feed-forward equalization. Then, the transmission of a 180-Gbaud on-off keying carrier over 80 km considering 20% error-correction overhead. Finally, a 10-km communication at 204 Gbaud on-off keying with up to 6 dB sensitivity margin, and regular 7% overhead error-correction.
Use of an Enzyme-Treated, Whey-Based Medium to Reduce Culture Agglutination (1994)

Rennet whey was hydrolyzed with papain during diafiltration at 40C over a 2-h period. Permeate collected from a membrane with a molecular weight cutoff of 10, OOO was freeze-dried and added to internal pH-controlled buffer salts as a replacement of the whey fraction. A control medium was prepared using dried whey. Both media were reconstituted (7.5% solids) and heat treated (85C for 45 min). Commercial lactic cultures OS, M30, and M37 were grown in both media to prepare bulk starter. Pasteurized skim milk (lo00 ml) in graduated cylinders was inoculated (5%) with bulk starter, Top and bottom pH of the skim milk was determined at 1-h intervals for 5 h. Culture agglutination was inhibited by 55 and 72% for cultures M30 and M37, respectively, when cultures were grown in the hydrolyzed whey media. Microscopic examination showed that cultures grown in hydrolyzed whey media formed considerably shorter chains and had little to no clumping.
ChemInform Abstract: Stereoselective Synthesis and Peptide Incorporation of (S)‐α‐ Amino‐(2,2′‐bipyridine)‐6‐propanoic Acid. (1992)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Long distance quantum teleportation in quantum relay configuration (2004)

Experimental realization of a quantum relay is reported, where the source creating the qubit to be teleported and the EPR source are both connected to the BSM (Bell state measurement) by 2 km of optical fibers.
TSDFFilter: content-aware communication planning for remote 3D reconstruction (2023)

We present a novel solution, TSDFFilter, for remote 3D reconstruction to relieve the high bandwidth requirement problem. Our approach is designed for scenarios where agents are used to collect data using an RGB-D camera and then transmit the information over the regular network to a high-performance server, where a global, dense, and volumetric model of a real-world scene is reconstructed. Our approach uses a content-aware communication planning framework in which agents can prune the gathered RGB-D information according to the transmission policy generated by the server. To generate the transmission policy, we introduce a confidence value to estimate how much each RGB-D pixel contributes to the reconstruction quality, and present an algorithm to find the confidence value. As a result, agents can transmit less RGB-D information without blindly compromising the reconstruction quality as the key-frame method and down-sampling method do. We implement our TSDFFilter framework to achieve real-time agent-assisted 3D reconstruction. Extensive evaluations show that comparing with the key-frame and down-sampling methods, our TSDFFilter framework can reduce the bandwidth requirement by up to 36% with similar reconstruction Chamfer distance, and reduce the reconstruction Chamfer distance by up to 78% with similar bandwidth requirement.
Visualization of human retinal micro-capillaries with phase contrast high-speed optical coherence tomography (2011)

We present high-speed Fourier-domain optical coherence tomography (Fd-OCT) with the phase variance based motion contrast method for visualizing retinal micro-circulation in vivo. This technique allows non-invasive visualization of a two-dimensional retinal perfusion map and concurrent volumetric morphology of retinal microvasculature with high sensitivity. The high-speed acquisition rate at 125kHz A-scans enables reduction of motion artifacts with increased scanning area if compared to previously reported results. Several scanning schemes with different sampling densities and scanning areas are evaluated to find optimal parameters for in vivo imaging. In order to evaluate this technique, we compare OCT micro-capillary imaging using the phase variance technique with fundus fluorescein angiography (FA). Additionally, volumetric visualization of blood flow for a normal subject is presented.