gebhart/patrepeval huggingface dataset:
Portable acoustic intensity measuring device (1987)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Francis S. McKendree, John M. Zomp; Portable acoustic intensity measuring device. J. Acoust. Soc. Am. 1 June 1987; 81 (6): 2008. https://doi.org/10.1121/1.394682 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAcoustical Society of AmericaThe Journal of the Acoustical Society of America Search Advanced Search |Citation Search
A Maurotoxin with Constrained Standard Disulfide Bridging (2003)

Maurotoxin (MTX) is a 34-residue toxin that has been isolated initially from the venom of the scorpion Scorpio maurus palmatus. It presents a large number of pharmacological targets, including small conductance Ca2+-activated and voltage-gated K+ channels. Contrary to other toxins of the alpha-KTx6 family (Pi1, Pi4, Pi7, and HsTx1), MTX exhibits a unique disulfide bridge organization of the type C1-C5, C2-C6, C3-C4, and C7-C8 (instead of the conventional C1-C5, C2-C6, C3-C7, and C4-C8, herein referred to as Pi1-like) that does not prevent its folding along the classic alpha/beta scaffold of scorpion toxins. Here, we developed an innovative strategy of chemical peptide synthesis to produce an MTX variant (MTXPi1) with a conventional pattern of disulfide bridging without any alteration of the toxin chemical structure. This strategy was used solely to address the impact of half-cystine pairings on MTX structural properties and pharmacology. The data indicate that MTXPi1 displays some marked changes in affinities toward the target K+ channels. Computed docking analyses using molecular models of both MTXPi1 and the various voltage-gated K+ channel subtypes (Shaker B, Kv1.2, and Kv1.3) were found to correlate with MTXPi1 pharmacology. A functional map detailing the interaction between MTXPi1 and Shaker B channel was generated in line with docking experiments.
<title>Passive two-band plant fluorescence sensor with applications in precision agriculture</title> (1999)

We have designed and built a passive sensor of sunlight- excited chlorophyll fluorescence which provides for the real-time, in situ sensing of photosynthetic activity in plants. This sensor, which operates as a Fraunhofer line discriminator, detects light at the cores of the lines comprising the atmospheric oxygen A-band and B-bands, centered at 760 nm and 688 nm respectively. These bands also correspond to wavelengths in the far red and red chlorophyll fluorescence bands. The sensor operates on the principle that as light collected from the fluorescing plants is passed through a cell containing oxygen at low pressure, the oxygen will absorb the energy and subsequently re-emit photons which can be detected by a photomultiplier tube. Since the oxygen in the cell will absorb light at exactly the wavelengths that have been strongly absorbed by the oxygen in the atmosphere, the response to incident sunlight is minimal. This mode of measurement is limited to target plants that are close enough that the plants' fluorescence is not itself appreciably absorbed by atmospheric oxygen.
Influence of 5-Methyltryptophan-Resistant <i>Bradyrhizobium japonicum</i> on Soybean Root Nodule Indole-3-Acetic Acid Content (1987)

Bradyrhizobium japonicum mutants resistant to 5-methyltryptophan were isolated. Some of these mutants were found to accumulate indole-3-acetic acid (IAA) and tryptophan in culture. In greenhouse studies, nodules from control plants inoculated with wild-type bradyrhizobia contained 0.04, 0.10, and 0.58 mug of free, ester-linked, and peptidyl IAA g (fresh weight) of nodules, respectively. Nodules from plants inoculated with 5-methyltryptophan-resistant bradyrhizobia contained 0.94, 1.30, and 10.6 mug of free, ester-linked, and peptidyl IAA g (fresh weight) of nodules, respectively. This manyfold increase in nodule IAA content indicates that the Bradyrhizobium inoculum can have a considerable influence on the endogenous IAA level of the nodule. Further, these data imply that much of the IAA that accumulated in the high-IAA-containing nodules was of bacterial rather than plant origin. These high-IAA-producing 5-methyltryptophan-resistant bacteria were poor symbiotic nitrogen fixers. Plants inoculated with these bacteria had a lower nodule mass and fixed less nitrogen per gram of nodule than did plants inoculated with wild-type bacteria.
Privacy-Preserving Certificate Linkage/Revocation in VANETs Without Linkage Authorities (2020)

Vehicular communication (V2X) technologies are expected to become common in the future, providing better efficiency and safety in transportation. This envisioned large-scale deployment, however, critically depends on addressing some issues. In special, to prevent abuse by drivers, messages exchanged among authorized vehicles must be authenticated. This implies the need of a Vehicular Public Key Infrastructure (VPKI). Unlike traditional PKIs, though, VPKIs are also expected to preserve the privacy of honest drivers, preventing their vehicles from being easily identified or tracked. One promising VPKI solution, which copes with such requirements and is among the main candidates for standardization in the United States, is the Security Credential Management System (SCMS). In this paper, aiming to enhance and address shortcomings identified in SCMS, we provide two main contributions. First, we describe and fix two birthday attacks against SCMS's certificate revocation process, thus improving the system's long-term privacy. Second, we propose a method that simplifies SCMS's architecture, removing the need for Linkage Authorities (LAs); this approach cuts down deployment costs while reducing the system's attack surface, in particular against some troublesome forms of replay attacks that are hereby unveiled.
Non-local Neural Networks (2018)

Both convolutional and recurrent operations are building blocks that process one local neighborhood at a time. In this paper, we present non-local operations as a generic family of building blocks for capturing long-range dependencies. Inspired by the classical non-local means method in computer vision, our non-local operation computes the response at a position as a weighted sum of the features at all positions. This building block can be plugged into many computer vision architectures. On the task of video classification, even without any bells and whistles, our non-local models can compete or outperform current competition winners on both Kinetics and Charades datasets. In static image recognition, our non-local models improve object detection/segmentation and pose estimation on the COCO suite of tasks. Code is available at https://github.com/facebookresearch/video-nonlocal-net .
The ColR/ColS Two-Component System Plays Multiple Roles in the Pathogenicity of the Citrus Canker Pathogen <i>Xanthomonas citri</i> subsp. <i>citri</i> (2011)

Bacterial citrus canker disease, which is caused by Xanthomonas citri subsp. citri, is one of the most devastating diseases of citrus plants. In this study, we characterized the role of the two-component regulatory system ColR/ColS in the pathogenicity of X. citri subsp. citri. colS mutants (256A10 and 421E7), colR mutants (386C6 and 417E10), and a colR colS double mutant (306DSR) all lost pathogenicity and produced no symptoms on grapefruit leaves inoculated by either pressure infiltration or the spray method. The pathogenicity defect of the colS, colR, and colR colS mutants could be complemented using the wild-type colS, colR, and colR colS genes, respectively. Mutation of colS or colR significantly reduced X. citri subsp. citri growth in planta. The ColR/ColS system also played important roles in bacterial biofilm formation in glass tubes and on leaf surfaces, lipopolysaccharide (LPS) production, catalase activity, and tolerance of environmental stress, including phenol, copper, and hydrogen peroxide. Furthermore, quantitative reverse transcription-PCR assays demonstrated that the ColR/ColS system positively regulated the expression of important virulence genes, including hrpD6, hpaF, the O-antigen LPS synthesis gene rfbC, and the catalase gene katE. Overall, our data indicate that the two-component regulatory system ColR/ColS is critical for X. citri subsp. citri virulence, growth in planta, biofilm formation, catalase activity, LPS production, and resistance to environmental stress.
Wafer-Level Flip Chip Packages Using Preapplied Anisotropic Conductive Films (ACFs) (2007)

Recently, wafer-level packaging (WLP) has become one of the promising packaging technologies due to its advantages, such as fewer processing steps, lower cost, and enhanced device performance compared to conventional single-chip packaging. Many developments on new WLP design, material, and process have been accomplished according to performance and reliability requirement of the devices to be packaged [1], [2]. For a lower cost, higher performance, and environmentally green packaging process, anisotropic conductive film (ACF) flip chip assembly has been widely used, such as in ultrafine-pitch flat panel display (FPD) and general semiconductor packaging applications, too. However, there has been no previous attempt on the wafer-level flip chip assembly using ACFs. In this paper, wafer-level flip chip packages using preapplied ACFs were investigated. After ACF prelamination on an electroplated Au bumped wafer, and subsequent singulation, singulated chips were flip-chip assembled on an organic substrate using a thermocompression bonding method. Au-plated bumps were well assembled on Ni/Au pads of organic substrates. The electrical, mechanical properties and the reliabilities of wafer-level flip chip assemblies (WL-FC As) were evaluated and compared with conventional ACF flip chip assemblies using the thermocompression method. Contact resistance measurement was performed after thermal cycling, high temperature/humidity, and pressure cooker test. ACF joints between electroplated Au bumps and substrate metal pads showed stable contact resistance of 5 mOmega per a bump, strong bump adhesion, and similar reliability behaviors compared with conventional ACF flip chip joints using a thermocompression bonding. As a summary, new wafer-level packages using preapplied ACFs were successfully demonstrated for flip chip assembly. The new wafer-level packages using preapplied ACFs can be widely used for many nonsolder flip chip assembly applications such as chip-on-board (COB), chip-on-flex (COF), and chip-on-glass (COG).
Evaluation of the reliability of calculated 3D vascular trees and their alignment with other views (2002)

Accurate intra- and inter-patient quantitative analyses of the coronary vasculature will require accurate methods for determination of the 3D coronary tree as well as methods to relate these data to previously acquired vascular trees. The authors have developed methods for determination of the 3D coronary trees from biplane angiograms and for alignment of calculated 3D trees with previously acquired 2D projections. After alignment, the projected centerlines of the aligned 3D vasculature and those in the reference image were visually similar in shape and position. The variation in the average RMS difference between calculated and reference centerlines was 1.3 mm, indicating a high similarity between the shapes of the calculated and actual vessels. These results indicate that the 3D vascular structure reconstructed from two views is accurate and that previously calculated 3D trees can be aligned with previously acquired images.
Microphone Arrays as Generalized Cameras for Integrated Audio Visual Processing (2007)

Combinations of microphones and cameras allow the joint audio visual sensing of a scene. Such arrangements of sensors are common in biological organisms and in applications such as meeting recording and surveillance where both modalities are necessary to provide scene understanding. Microphone arrays provide geometrical information on the source location, and allow the sound sources in the scene to be separated and the noise suppressed, while cameras allow the scene geometry and the location and motion of people and other objects to be estimated. In most previous work the fusion of the audio-visual information occurs at a relatively late stage. In contrast, we take the viewpoint that both cameras and microphone arrays are geometry sensors, and treat the microphone arrays as generalized cameras. We employ computer-vision inspired algorithms to treat the combined system of arrays and cameras. In particular, we consider the geometry introduced by a general microphone array and spherical microphone arrays. The latter show a geometry that is very close to central projection cameras, and we show how standard vision based calibration algorithms can be profitably applied to them. Experiments are presented that demonstrate the usefulness of the considered approach.
Terahertz imaging through self-mixing in a quantum cascade laser (2011)

We demonstrate terahertz (THz) frequency imaging using a single quantum cascade laser (QCL) device for both generation and sensing of THz radiation. Detection is achieved by utilizing the effect of self-mixing in the THz QCL, and, specifically, by monitoring perturbations to the voltage across the QCL, induced by light reflected from an external object back into the laser cavity. Self-mixing imaging offers high sensitivity, a potentially fast response, and a simple, compact optical design, and we show that it can be used to obtain high-resolution reflection images of exemplar structures.
An electrophoretic method for selection of conditions for production of electrophoretically uniform protein colloidal gold complexes. (1991)

An electrophoretic method was developed to determine the conditions required for production of electrophoretically uniform protein-colloidal gold complexes from monodisperse colloidal gold (Au) and electrophoretically uniform protein. The method is based on the electrophoretic migration of protein-Au complexes in agarose. The results demonstrate that two variables, the pH of adsorption and the quantity of protein added, can be manipulated to vary the electrophoretic mobility of the resulting protein-Au complexes. Thus, agarose gel electrophoresis can be used to select the pH of adsorption and the quantity of protein required to produce electrophoretically uniform protein-Au complexes. This new electrophoretic mobility test can be used in place of or in addition to the classical procedure of Zsigmondy and its many variations, both visual and spectrophotometric. The procedure described is also useful for electrophoretic comparison of small quantities of various protein-Au samples.
Outer membrane vesicles from group B <b><i>Neisseria meningitidis</i></b> Δ<b><i>gna33</i></b> mutant: Proteomic and immunological comparison with detergent‐derived outer membrane vesicles (2006)

We compared the proteome of detergent-derived group B Neisseria meningitidis (MenB) outer membrane vesicles (DOMVs) with the proteome of outer membrane vesicles (m-OMVs) spontaneously released into culture supernatant by MenB delta gna33, a mutant in which the gene coding for a lytic transglycosylase homologous to the E. coli MltA was deleted. In total, 138 proteins were identified in DOMVs by 1- and 2-DE coupled with MS; 64% of these proteins belonged to the inner membrane and cytoplasmic compartments. By contrast, most of the 60 proteins of m-OMVs were classified by PSORT as outer membrane proteins. When tested for their capacity to elicit bactericidal antibodies, m-OMVs elicited a broad protective activity against a large panel of MenB strains. Therefore, the identification of mutations capable of conferring an OMV-releasing phenotype in bacteria may represent an attractive approach to study bacterial membrane composition and organization, and to design new efficacious vaccine formulations.
Microchannel-cooled heatsinks for high-average-power laser diode arrays (1993)

Detailed performance results for an efficient and low thermal impedance laser diode array heatsink are presented. High duty factor and even cw operation of fully filled laser diode arrays at high stacking densities are enabled at high average power. Low thermal impedance is achieved using a liquid coolant and laminar flow through microchannels. The microchannels are fabricated in silicon using an anisotropic chemical etching process. A modular rack-and- stack architecture is adopted for heatsink design, allowing arbitrarily large two-dimensional arrays to be fabricated and easily maintained. The excellent thermal control of the microchannel heatsinks is ideally suited to pump array requirements for high average power crystalline lasers because of the stringent temperature demands that are required to efficiently couple diode light to several-nanometer-wide absorption features characteristic of lasing ions in crystals.
A Design-for-Test Solution Based on Dedicated Test Layers and Test Scheduling for Monolithic 3-D Integrated Circuits (2018)

Monolithic 3-D (M3D) integration has the potential to achieve significantly higher device density compared to 3-D integration based on through-silicon vias. We propose a test solution for M3D ICs based on dedicated test layers, which are inserted between functional layers. We evaluate the cost associated with the proposed design-for-test (DfT) solution and compare it with that for a potential DfT solution based on the IEEE Std. P1838. Our results show that the proposed DfT solution is more cost-efficient than the P1838-based DfT solution for a wide range of interlayer via density. We also present a test scheduling and optimization technique for wafer-level testing of M3D ICs. The proposed technique provides test schedules with minimum test time under power consumption and probe pad constraints.
Primary structure, neural-specific expression, and dendritic location of human BC200 RNA (1993)

Primate BC200 RNA is a 200-nucleotide-long, nontranslatable RNA that is prevalently expressed in the nervous system. We have determined the primary structure of human BC200 RNA, using cDNA cloning and PCR techniques. BC200 RNA can be subdivided into three structural domains. The 5' region is homologous to Alu repetitive elements that are found in high copy numbers in primate genomes. The central part of BC200 RNA is characterized by a high percentage of A-residues, with a few interspersed other nucleotides. The 3' sequence is unique to BC200 RNA and shows no apparent similarity with known human DNA sequences. Sequence similarity with rodent BC1 RNA is limited to several short elements, and BC1/BC200 sequence comparisons indicate that the two genes have evolved via separate phylogenetic routes. Probes directed against the 3' unique part of BC200 RNA detected a single band corresponding to approximately 200 nucleotides on RNA blots. This band was identified only with RNA isolated from human brain, not with RNA from non-neural organs such as lung or kidney. In situ hybridization to selected areas of the human nervous system showed that BC200 RNA is expressed by a subpopulation of neurons that is analogous to the BC1 RNA-expressing subset of neurons in the corresponding areas of the rat nervous system. Moreover, like rat BC1 RNA, human BC200 RNA was localized to dendrite-rich neuropil areas, for example, in the inner plexiform layer of the retina. These results indicate that BC1 RNA and BC200 RNA, although of different evolutionary pedigree, may play analogous functional roles, in rodents and primates, respectively, in somatodendritic domains of nerve cells.
3-D segmentation of the rim and cup in spectral-domain optical coherence tomography volumes of the optic nerve head (2009)

Glaucoma is a group of diseases which can cause vision loss and blindness due to gradual damage to the optic nerve. The ratio of the optic disc cup to the optic disc is an important structural indicator for assessing the presence of glaucoma. The purpose of this study is to develop and evaluate a method which can segment the optic disc cup and neuroretinal rim in spectral-domain OCT scans centered on the optic nerve head. Our method starts by segmenting 3 intraretinal surfaces using a fast multiscale 3-D graph search method. Based on one of the segmented surfaces, the retina of the OCT volume is flattened to have a consistent shape across scans and patients. Selected features derived from OCT voxel intensities and intraretinal surfaces were used to train a k-NN classifier that can determine which A-scans in the OCT volume belong to the background, optic disc cup and neuroretinal rim. Through 3-fold cross validation with a training set of 20 optic nerve head-centered OCT scans (10 right eye scans and 10 left eye scans from 10 glaucoma patients) and a testing set of 10 OCT scans (5 right eye scans and 5 left eye scans from 5 different glaucoma patients), segmentation results of the optic disc cup and rim for all 30 OCT scans were obtained. The average unsigned errors of the optic disc cup and rim were 1.155 ± 1.391 pixels (0.035 ± 0.042 mm) and 1.295 ± 0.816 pixels (0.039 ± 0.024 mm), respectively.
Single event transient mitigation in cache memory using transient error checking circuits (2010)

Protecting a high performance radiation hardened by design (RHBD) cache from single-event transient (SET) induced peripheral circuit errors is presented. Cache memory holds processor architectural state and peripheral errors can cause incorrect operations that affect entire data words, including parity. Thus, a periphery circuit, e.g., word-line, error can be induced that results in silent data corruption, for instance by writing two locations at once. The design presented here includes checking circuits to detect potential SET induced errors, allowing mitigation by invalidation of the write-through cache blocks. A 16 kB cache and test engine, fabricated on an IBM 90 nm bulk CMOS process, irradiated with heavy ions, is used to provide experimental validation of the design.
Investigation of Microscale Magnetic Forces for Magnet Array Self-Assembly (2007)

This paper focuses on quantification and optimization of micromagnetic bonding forces to enable a technique of magnet array self-assembly (MASA). MASA is envisioned to uniquely assemble different microscale components using arrays of hard micromagnets, which are pre-patterned onto the component surfaces via batch-fabrication. Finite-element (FEM) and analytical methods are used to analyze the dependence of magnetic bonding forces on the size, shape, and magnetization of individual pairs of magnets as well as arrays of magnets. The advantages of using micromagnet arrays in place of single magnets for chip scale self-assembly are explored