gebhart/patrepeval huggingface dataset:
New Design of Helix Bundle Peptide−Polymer Conjugates (2008)

We present a new design of peptide-polymer conjugates where a polymer chain is covalently linked to the side chain of a helix bundle-forming peptide. The effect of conjugated polymer chains on the peptide structure was examined using a de novo designed three-helix bundle and a photoactive four-helix bundle. Upon attachment of poly(ethylene glycol) to the exterior of the coiled-coil helix bundle, the peptide secondary structure was stabilized and the tertiary structure, that is, the coiled-coil helix bundle, was retained. When a heme-binding peptide as an example is used, the new peptide-polymer conjugate architecture also preserves the built-in functionalities within the interior of the helix bundle. It is expected that the conjugated polymer chains act to mediate the interactions between the helix bundle and its external environment. Thus, this new peptide-polymer conjugate design strategy may open new avenues to macroscopically assemble the helix bundles and may enable them to function in nonbiological environments.
On improving the robustness of compressed video by Slepian-Wolf based lossless transcoding (2009)

A variety of techniques have been proposed to enhance the error robustness of the video streaming system. However, most of them improve the error resilience during compression rather than after compression. In this paper, we propose a novel transcoding based scheme called Slepian-Wolf based inter frame transcoding (SWIFT) to improve the error resilience of existing compressed video stream. In the SWIFT scheme, inter coded blocks are selectively transcoded into new kind of blocks called ‘X-block’. At the decoder, the X-block can be transcoded back to the original P-block when there is no error in the prediction, and can also be robustly decoded as I-block when there are errors in the prediction. In the experiments, the proposed SWIFT scheme does not introduce transcoding distortion as expected, and always improves the robustness of the compressed video at all packet loss rate. Compared with the H.264 based transcoder, SWIFT achieves better RD performance and error resilience performance.
Simultaneous Dual Protein Labeling Using a Triorthogonal Reagent (2013)

Construction of heterofunctional proteins is a rapidly emerging area of biotherapeutics. Combining a protein with other moieties, such as a targeting element, a toxic protein or small molecule, and a fluorophore or polyethylene glycol (PEG) group, can improve the specificity, functionality, potency, and pharmacokinetic profile of a protein. Protein farnesyl transferase (PFTase) is able to site-specifically and quantitatively prenylate proteins containing a C-terminal CaaX-box amino acid sequence with various modified isoprenoids. Here, we describe the design, synthesis, and application of a triorthogonal reagent, 1, that can be used to site-specifically incorporate an alkyne and aldehyde group simultaneously into a protein. To illustrate the capabilities of this approach, a protein was enzymatically modified with compound 1 followed by oxime ligation and click reaction to simultaneously incorporate an azido-tetramethylrhodamine (TAMRA) fluorophore and an aminooxy-PEG moiety. This was performed with both a model protein [green fluorescent protein (GFP)] as well as a therapeutically useful protein [ciliary neurotrophic factor (CNTF)]. Next, a protein was enzymatically modified with compound 1 followed by coupling to an azido-bis-methotrexate dimerizer and aminooxy-TAMRA. Incubation of that construct with a dihydrofolate reductase (DHFR)–DHFR–anti-CD3 fusion protein resulted in the self-assembly of nanoring structures that were endocytosed into T-leukemia cells and visualized therein. These results highlight how complex multifunctional protein assemblies can be prepared using this facile triorthogonal approach.
Fast-converging complex adaptive algorithm for diversity wireless receivers in linearly fading channels (2006)

In wireless communications, fixed-point complex independent component analysis (ICA) algorithms have been applied to perform separation of complex signals. Presented is a novel complex adaptive ICA algorithm which employs individual convergence factors for the real and imaginary components of the weight vector. For wireless receivers operating on quadrature amplitude modulation, the adaptive algorithm performs better than the existing complex fast-ICA algorithm in terms of accuracy. Computer simulations confirm the effectiveness of the proposed algorithm.
Muffler for exhaust gas from an internal combustion engine (1985)

First Page
The Application of Tandem Mass Spectrometry to Neonatal Screening for Inherited Disorders of Intermediary Metabolism (2002)

This review is intended to serve as a practical guide for geneticists to current applications of tandem mass spectrometry to newborn screening. By making dried-blood spot analysis more sensitive, specific, reliable, and inclusive, tandem mass spectrometry has improved the newborn detection of inborn errors of metabolism. Its innate ability to detect and quantify multiple analytes from one prepared blood specimen in a single analysis permits broad recognition of amino acid, fatty acid, and organic acid disorders. An increasing number of newborn screening programs are either utilizing or conducting pilot studies with tandem mass spectrometry. It is therefore imperative that the genetics community be familiar with tandem mass spectrometric newborn screening.
Multilayer bipolar field-effect transistors (2008)

Field-effect transistors comprising a layer of regioregular poly(3-hexylthiophene) (rr-P3HT) separated from a parallel layer of the soluble fullerene,[6,6]-phenyl C61-butyric acid methyl ester (PCBM) by a layer of titanium suboxide (TiOx), are fabricated by solution processing. Because the TiOx is an electron transporting material and a hole blocking material, this multilayer architecture operates either in the p-channel mode with holes in the rr-P3HT layer or in the n-channel mode with electrons in the PCBM layer.
Vibration control above the nyquist frequency in hard disk drives (2006)

In conventional hard disk drives, a control system compensates the mechanical resonance by using a multi-rate notch filter that can decrease the gain above the nyquist frequency. However, such a control system (which is based on the small-gain theorem) only avoids becoming unstable by mechanical resonances. It cannot suppress the vibrations caused by these resonances. In response to these problems, we proposed a design method for a sampled-data control system that uses frequency responses of a controlled object and a digital controller. Our method can calculate the norm of the sensitivity function in a sampled-data system and design a control system that decreases vibrations that occur at frequencies above the nyquist frequency. When the method was applied to the head-positioning system of a hard disk drive, we found that a mechanical resonance, in which the frequency was above the nyquist frequency, could be stabilized by the phase condition, and the vibrations could be decreased by the control system
On optimizing and scaling control plane traffic in Carrier Ethernet transport networks (2011)

Control-plane scalability for Carrier Ethernet networks is a concern that directly impacts transport networks and has been addressed in this paper. Specifically, connectivity fault management optimization is proposed and validated through a analytical/simulations study.
A long-range restriction map across 3 Mb of the chromosome 11 breakpoint region of a translotion linked to schizophrenia (1998)

A balanced t(1;11)(q42.1;q14.3) translocation segregates with schizophrenia and related mental illness in a single large Scottish pedigree. We have constructed a long-range restriction map covering at least 3 Mb of the chromosome 11 breakpoint region and conducted searches for genes whose expression could be altered by the translocation, resulting in schizophrenia. Novel transcribed sequences of unknown function clustered around putative CpG islands, located approximately 500 kb and 700 kb above the breakpoint, represent the only evidence to date for expressed genes within the mapped region.
Multi-Port Driven Radiators (2013)

Integrated multi-port driven (MPD) radiator design is presented as an approach that takes advantage of the increased design space offered by using a hybrid design of an antenna with multiple ports and its driver circuitry integrated together on a single substrate. This reduces costly losses by eliminating independent elements for power combination, output impedance matching networks, and power transfer by engineering current patterns on a chip based on the desired far field pattern. The electromagnetic radiation produced by a circularly polarized MPD antenna is calculated analytically to provide design intuition, with supporting electromagnetic simulations. A single element 160 GHz MPD antenna and the supporting driver circuitry is designed and fabricated in a 0.13 μm SiGe BiCMOS process. A tuned 8 phase ring oscillator generates the signal with each phase feeding class A power amplifiers that drive the antenna. The radiator achieves 4.6 dBm single element effective isotropically radiated power (EIRP) and total radiated power of -2.0 dBm at 161 GHz while consuming 117.5 mA DC current from a 3.3 V source. Measurements of three frequency bands at 145, 154 and 161 GHz show greater than 0 dBm EIRP for each band, demonstrating the wide band nature of the antenna.
Wireless power transfer system design for implanted and worn devices (2009)

Witricity, a highly efficient wireless power transfer method using mid-range resonant coupling, was reported in recent literature. Based on this method, we present a wireless power transfer scheme using thin film resonant cells for medical applications. The thin film cells, consisting of a tape coil in the exterior layer and conductive strips in the interior layer separated by an insulation layer, are made light and flexible to provide comfort for users during wear. The wireless power transfer scheme presented displays great potential for delivering energy to implantable and worn devices, with range much larger than the current technology for powering implantable devices.
Front Projection: Tessellating the Screen (1986)

In the fabrication of a retroreflective front projection screen for motion-picture composite photography, the variations inherent in the manufactured screen material are diminished by homogenizing. This is accomplished by dividing the stock material into small, symmetrical pieces or tiles, and then tessellating (or tiling) a substrate plane. The shape of the tile is designed to reduce to a minimum the number of conjoined segments and to entirely eliminate straight lines, thus diminishing the evidence of the mosaic pattern.
29.3: Crosstalk Reduction of 3D LCDs based on Analysis of LC Graded‐Index (GRIN) Lens Factors (2012)

Abstract We investigate a 3D display using a Liquid Crystal Gradient Refractive Index (LC GRIN) lens and the factors needed to decrease crosstalk. Crosstalk in the latest 3D displays using LC GRIN lenses is 0.6%.
Study of Temporal Effects on Subjective Video Quality of Experience (2017)

HTTP adaptive streaming is being increasingly deployed by network content providers, such as Netflix and YouTube. By dividing video content into data chunks encoded at different bitrates, a client is able to request the appropriate bitrate for the segment to be played next based on the estimated network conditions. However, this can introduce a number of impairments, including compression artifacts and rebuffering events, which can severely impact an end-user's quality of experience (QoE). We have recently created a new video quality database, which simulates a typical video streaming application, using long video sequences and interesting Netflix content. Going beyond previous efforts, the new database contains highly diverse and contemporary content, and it includes the subjective opinions of a sizable number of human subjects regarding the effects on QoE of both rebuffering and compression distortions. We observed that rebuffering is always obvious and unpleasant to subjects, while bitrate changes may be less obvious due to content-related dependencies. Transient bitrate drops were preferable over rebuffering only on low complexity video content, while consistently low bitrates were poorly tolerated. We evaluated different objective video quality assessment algorithms on our database and found that objective video quality models are unreliable for QoE prediction on videos suffering from both rebuffering events and bitrate changes. This implies the need for more general QoE models that take into account objective quality models, rebuffering-aware information, and memory. The publicly available video content as well as metadata for all of the videos in the new database can be found at http://live.ece.utexas.edu/research/LIVE_NFLXStudy/nflx_index.html.
Orthogonal Time Frequency Space (OTFS) modulation for millimeter-wave communications systems (2017)

Due to the increased demand for data rate, flexibility, and reliability of 5G cellular systems, new modulation formats need to be considered. A recently proposed scheme, Orthogonal Time Frequency Space (OTFS), offers various advantages in particular in environments with high frequency dispersion. Such environments are encountered, e.g, in mm-wave systems, both due to the higher phase noise, and the larger Doppler spreads encountered there. The current paper provides a performance evaluation of OTFS at 5G mm-wave frequencies. Comparisons with OFDM modulation show that OTFS has lower BER than OFDM in a number of situations.
Low extended defect density nonpolar m-plane GaN by sidewall lateral epitaxial overgrowth (2008)

Sidewall lateral epitaxial overgrowth (SLEO) is demonstrated by metal organic chemical vapor deposition for nonpolar {11¯00} m-plane GaN films. m-plane GaN films were grown by metal organic chemical vapor deposition on m-plane 6H SiC substrates with an AlN initiation layer. Subsequently, an SiO2 stripe dielectric pattern was formed with 2μm window openings parallel to the [112¯0] a-direction and an 8μm mask and then the m-plane GaN was etched through the window openings to reveal Ga-face (0001) and N-face (0001¯) sidewalls. The SLEO growth was achieved in two growth steps—lateral growth from the sidewalls and subsequent growth through and then over the dielectric mask openings. In comparison to planar m-plane GaN films grown on 6H SiC, the threading dislocation density was reduced from low 1010to3×108cm−2 and the stacking fault density was reduced by one order of magnitude.
Square pulse linear transformer driver (2012)

The linear transformer driver (LTD) technological approach can result in relatively compact devices that can deliver fast, high current, and high-voltage pulses straight out of the LTD cavity without any complicated pulse forming and pulse compression network. Through multistage inductively insulated voltage adders, the output pulse, increased in voltage amplitude, can be applied directly to the load. The usual LTD architecture [A. A. Kim, M. G. Mazarakis, V. A. Sinebryukhov, B. M. Kovalchuk, V. A. Vizir, S. N Volkov, F. Bayol, A. N. Bastrikov, V. G. Durakov, S. V. Frolov, V. M. Alexeenko, D. H. McDaniel, W. E. Fowler, K. LeCheen, C. Olson, W. A. Stygar, K. W. Struve, J. Porter, and R. M. Gilgenbach, Phys. Rev. ST Accel. Beams 12, 050402 (2009); M. G. Mazarakis, W. E. Fowler, A. A. Kim, V. A. Sinebryukhov, S. T. Rogowski, R. A. Sharpe, D. H. McDaniel, C. L. Olson, J. L. Porter, K. W. Struve, W. A. Stygar, and J. R. Woodworth, Phys. Rev. ST Accel. Beams 12, 050401 (2009)] provides sine shaped output pulses that may not be well suited for some applications like $z$-pinch drivers, flash radiography, high power microwaves, etc. A more suitable power pulse would have a flat or trapezoidal (rising or falling) top. In this paper, we present the design and first test results of an LTD cavity that generates such a type of output pulse by including within its circular array a number of third harmonic bricks in addition to the main bricks. A voltage adder made out of a square pulse cavity linear array will produce the same shape output pulses provided that the timing of each cavity is synchronized with the propagation of the electromagnetic pulse.
A fuel cell catalyst support based on doped titanium suboxides with enhanced conductivity, durability and fuel cell performance (2018)

A low-band gap metal-oxide based fuel cell catalyst support with enhanced durability and fuel cell performance.
I<sup>2</sup> average current mode control for switching converters (2013)

The constant frequency average current mode control is a widely used control scheme for the converters requiring precise current control, but its transient response is relatively slow, while the switching loss and driving loss significantly diminish the light load efficiency. To solve these issues, the I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> control average current mode is proposed. By combining the fast direct current feedback and integral feedback, the I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> control achieves both wide bandwidth and accurate current control. As a particular embodiment of this concept, by adopting constant on-time modulation, constant on-time I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> control needs no artificial ramp, and has fast dynamic response. Moreover, due to the decrease of switching frequency, constant on-time I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> control improves the efficiency in discontinuous-conduction-mode. The concept of I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> control can be extended to other modulations. Small signal model using describing function based equivalent circuit model is proposed. The model is accurate up to 1/2 switching frequency. Based on model, the design guidelines are discussed. The proposed control is verified with simulation and hardware measurement results.
ChemInform Abstract: Selective Synthesis of Dimethylamine Over Small‐Pore Zeolites. Part 2. Effects of Impurities on Catalytic Properties of H‐RHO. (1989)

Abstract Impurities of zeolite RHO such as unreacted H‐gel, H‐chabazite, H‐Pc, and H‐pollucite are prepared and their effect on the dimethylamine synthesis from MeOH and NH 3 is studied.
Electromigration behavior of polysaccharides in capillary electrophoresis under pulsed-field conditions. (1993)

Various polysaccharides can successfully migrate through entangled polymer solutions during high-voltage capillary electrophoresis. For neutral polysaccharides, complexation with borate provides the electric charge needed for electromigration, while a fluorescent tag is needed to detect the solute bands with adequate sensitivity. At constant potentials between 50 and 300 V/cm, the charged polysaccharides undergo molecular stretching, resisting the desired separation according to their molecular mass. This problem can be overcome through the use of variable fields, pulsed along the separation capillary at a 180 degree angle. Variables of the pulsing experiment appear to have a profound influence on molecular shape rearrangements of polysaccharides with respect to the separation medium, as demonstrated here with highly efficient separations of polydextrans (8,000-2,000,000 Da).
Bandwidth extension of oversampled Analog-to-Digital converters by means of gain boosting (2016)

This paper presents a novel technique to extend the bandwidth of oversampled Analog-to-Digital Converters (ADCs) when clock frequency cannot be increased and oversampling has to be preserved. The Signal Transfer Function (STF) of the converter is modified to boost the signal in the extended band. The modification keeps the noise transfer function (NTF) unaffected, and therefore, there is no need of increasing the order of the loop filter or the resolution of the quantizer. Using the proposed technique, the converter has the capability of processing input signals in the extended band with increased resolution or even in both bands concurrently, by introducing minor circuit modifications. An improvement of 6dB in the Signal-to-Noise Ratio is reached, which allows to maintain the order of the loop filter or the resolution of the quantizer, thus saving power consumption and silicon area.
Morphology Characterization of Bacterial Colonies for Predicting Forward Scattering Patterns (2010)

In this paper we report quantitative measurements of bacterial colony morphologies that are subsequently used to predict forward scattering patterns with scalar diffraction theory. Predicted patterns for EcoliDH5α and ListeriaF4244 show distinguishable differences.
Pervaporation Membranes That Are Highly Selective for Acetic Acid over Water (2003)

Supported liquid membrane pervaporation (SLMPV) is a pervaporation process for separating volatile organic compounds (VOCs) from their dilute aqueous solution. It simultaneously integrates extraction of the VOCs from the aqueous solution with flash distillation of the VOCs from the organic phase. By using a liquid membrane consisting of reactive extractants, pervaporation of primarily acetic acid from its aqueous solutions was studied. Limited studies of butyric acid were also done. Among various extractants tested, trioctylamine (TOA) and tridodecylamine demonstrated better performances. The SLM is permselective for acetic acid and butyric acid. The acetic acid selectivity can be as high as 33 for a feed of 1 M at 60°C, an order of magnitude higher than that obtained by any solid polymeric membrane reported in the literature. The simple SLM system demonstrated long-term stability; for example, decreases of about 30% in both pervaporation flux and selectivity were observed over an operational period of 500 h. A new technique of continuous on-line regeneration of the LM during operation maintains completely stable operational performance.