gebhart/patrepeval huggingface dataset:
Biofilms: Bacterial Photolithography: Patterning Escherichia coli Biofilms with High Spatial Control Using Photocleavable Adhesion Molecules (Adv. Biosys. 3/2019) (2019)

In article number 1800269, Seraphine V. Wegner and co-workers describe bacterial photolithography, which allows for photopatterning bacteria into complex geometries with a high resolution. When surfaces are irradiated through a photomask, photocleavable bacterial adhesion molecules are locally removed, and bacteria can specifically adhere to non-illuminated areas. This allows further study of how the spatial arrangement of bacteria influences social interactions between bacteria, including quorum sensing in biofilms.
Labor Induction in Patients with Previous Cesarean Section (1995)

To determine the efficacy and safety of labor induction in patients previously delivered by at least one low transverse cesarean section, a retrospective review was done at a single tertiary perinatal center, the University of Florida Health Science Center, Jacksonville. All patients with a previous cesarean section who required labor induction from 1988 until the end of 1992 were identified. Duration and outcome of labor induction, including mode of delivery, maternal and perinatal morbidity, and birth trauma, were evaluated. Of 160 patients with a previous cesarean, 50 (31.3%) had a repeat operation compared to 18 (11.2%) in the no previous cesarean group (p = 0.001, odds ratio = 3.59; 95% confidence interval, 1.98, 6.49). Women in the cesarean group had a higher incidence of operative vaginal deliveries, prolonged duration of the first and second stages of labor, rate and maximum dose of oxytocin infusion. One patient in the previous cesarean group experienced uterine rupture. There was no difference in the rate of infants with low 5-minute Apgar scores or with cord pH values less than 7.20. Labor induction in women with previous low transverse cesarean sections results in an acceptable rate of vaginal delivery and appears safe for both mother and fetus.
Ultrafast Photoinduced Electron Transfer in Rigid Porphyrin-Quinone Dyads (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTUltrafast Photoinduced Electron Transfer in Rigid Porphyrin-Quinone DyadsAlisdair N. Macpherson, Paul A. Liddell, Su Lin, Lori Noss, Gilbert R. Seely, Janice M. DeGraziano, Ana L. Moore, Thomas A. Moore, and Devens GustCite this: J. Am. Chem. Soc. 1995, 117, 27, 7202–7212Publication Date (Print):July 1, 1995Publication History Published online1 May 2002Published inissue 1 July 1995https://pubs.acs.org/doi/10.1021/ja00132a021https://doi.org/10.1021/ja00132a021research-articleACS PublicationsRequest reuse permissionsArticle Views451Altmetric-Citations82LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Periodic properties of pushdown automata (2019)

Abstract Finite automata transform periodic sequences into periodic ones. The period of the output sequence is bounded from above by a linear function of input period. It is known that pushdown automata also preserve the set of periodic sequences. We prove that the output period for one-counter pushdown automata is bounded from above by a quadratic function of input period. We also give an example of an automaton with a quadratic lower bound on output period.
Diagnosis of multifaults in analogue circuits using multilayer perceptrons (1997)

It is shown, by means of an example, how multiple faults in bipolar analogue integrated circuits can be diagnosed, and their resistances determined, from the magnitudes of the Fourier harmonics in the spectrum of the circuit responses to a sinusoidal input test signal using a two-stage multilayer perceptron (MLP) artificial neural network arrangement to classify the responses to the corresponding fault. A sensitivity analysis is performed to identify those harmonic amplitudes which are most sensitive to the faults, and also to which faults the functioning of the circuit under test is most sensitive. The experimental and simulation procedures are described. The procedures adopted for data preprocessing and for training the MLPs are given. One hundred percent diagnostic accuracy was achieved, and most resistances were determined with tolerable accuracy.
Therapeutic Effects of Thymoquinone on Alzheimer’s Disease through Modulating Amyloid-beta Neurotoxicity and Neuro-inflammatory Cytokine Levels (2022)

Alzheimer's disease (AD) is a neurodegenerative disease that involves several impaired neuronal pathways. Modulating the amyloid-beta (β-amyloid) system is being tested to treat AD. Amyloid-beta neurotoxicity is associated with neuroinflammation and plaque formation, further progressing to AD. Protecting neurons from β-amyloid neurotoxicity could be an efficient strategy for the treatment of AD. Thymoquinone (TQ) is an active ingredient in Nigella sativa (NS) and has shown effective therapeutic properties in AD models. TQ was able to attenuate the behavioral dysfunctions in AD models. Moreover, TQ could attenuate the neuroinflammation properties in animals with AD. In addition, studies have shown that TQ could modulate β -amyloid neurotoxicity, an effect associated with improved AD behavioral symptoms. In this review, we highlighted the therapeutic effects of TQ on the progression of AD through modulating β-amyloid neurotoxicity and neuro-inflammatory cytokine levels. Other phenolic compounds also present in NS improved behavioral and neuronal impairments in AD models, supporting TQ's anti-Alzhiemer's efficacy.
Efficient spear-phishing threat detection using hypervisor monitor (2015)

In recent years, cyber security threats have become increasingly dangerous. Hackers have fabricated fake emails to spoof specific users into clicking on malicious attachments or URL links in them. This kind of threat is called a spear-phishing attack. Because spear-phishing attacks use unknown exploits to trigger malicious activities, it is difficult to effectively defend against them. Thus, this study focuses on the challenges faced, and we develop a Cloud-threat Inspection Appliance (CIA) system to defend against spear-phishing threats. With the advantages of hardware-assisted virtualization technology, we use the CIA to develop a transparent hypervisor monitor that conceals the presence of the detection engine in the hypervisor kernel. In addition, the CIA also designs a document pre-filtering algorithm to enhance system performance. By inspecting PDF format structures, the proposed CIA was able to filter 77% of PDF attachments and prevent them from all being sent into the hypervisor monitor for deeper analysis. Finally, we tested CIA in real-world scenarios. The hypervisor monitor was shown to be a better anti-evasion sandbox than commercial ones. During 2014, CIA inspected 780,000 mails in a company with 200 user accounts, and found 65 unknown samples that were not detected by commercial anti-virus software.
Nonsurgically Treated Carpal Tunnel Syndrome in the Manual Worker (1994)

This study evaluates the course of carpal tunnel syndrome in a group of manual laborers who declined surgery for personal or social reasons. Thirty-five patients and 67 extremities with carpal tunnel syndrome were evaluated in a group of manual laborers. The carpal tunnel syndrome was classified as mild, moderate, or severe on the basis of initial evaluation data. Sensory batteries, motor and sensory conduction velocities, and electrical studies were performed on a scheduled basis. Follow-up ranged between 14 and 58 months, with an average of 34.3 months. Three patients became worse and one improved during the study period. All others remained unchanged. Six patients returned to work, but only three returned to their original jobs. Although carpal tunnel syndrome does not appear to be a progressive condition once the triggering cause is removed, nonsurgical treatment does not seem to be the treatment of choice for patients who must continue in a manual labor position.
Nonlinear behavior of an UHF quartz resonator in an oscillating system (2012)

Characterization of a quartz resonator operating at 553 MHz in a closed loop oscillating system has been performed under various drive levels to characterize its nonlinear behavior. The voltage and current were measured across the resonator using differential active probes and used to calculate the magnitude of the admittance under drive. Our results show that nonlinear resonator operation widens the bandwidth of low phase noise operation. At the low frequency end of the operating range, where overall phase noise is degraded, phase noise improvement is ~ 20dB. However, the overall phase noise levels do not improve significantly over the linear case.
Division of focal plane RGB full-Stokes imaging polarimeter (2020)

We calibrate and test a division-of-focal-plane RGB full-Stokes imaging polarimeter in a variety of indoor and outdoor environments. The polarimeter, acting as a polarization camera, utilizes a low dispersion micro-retarder array on top of a sensor with Bayer filters and wire-grid linear polarizers. We also present the design and fabrication of the micro-retarder array and the assembly of the camera and validate the performance of the camera by taking multiple RGB full-Stokes images and videos. Our camera has a small form factor due to its single sensor design and the unique capability to measure the intensity, color, and polarization of an optical field in a single shot.
20‐3: Invited Paper : Utilization of Heavy Metal‐Free Quantum Dots to Enhance Color Quality in Lighting Applications (2016)

Integration of heavy metal‐free quantum dots into commercial lighting products and the performance of such devices are discussed. We also examine the development status of such material as a sustainable material for the lighting industry.
Similarity Analysis for the Surface Ablation of Silica-Reinforced Composites (1973)

Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Interchangeable side-viewing endoscopic probes for optical coherence tomography (Conference Presentation) (2018)

We present a proof-of-concept for side-viewing endoscopic optical coherence tomography probes designed for real-time imaging. The design employs a commercial rotating micro-engine (Kinetron), with a 1 mm outer diameter and maximum speed of 10,000 rpm, to steer the beam from a GRIN lens-terminated optical fiber (Agiltron), 360 degrees around the probe body. The engine is encapsulated inside a PET tube with an outer diameter of 1.6 mm, and coupled to a swept-source based optical coherence tomography (SS-OCT) system operating at 1300 nm with an A-scan rate of 100 kHz. Large material dispersion mismatch between the reference and sample arms, which would otherwise degrade the axial resolution, is compensated for by using the Master-Slave OCT technique to process the interferograms. This allows for more convenient interchange of probes without exactly matching the fibre length. The probe can be configured using GRIN lenses at the end of the fibers with different focal lengths, and the fiber lengths can differ by several cm. When the probe is changed, the reference path is adjusted, but no dispersion compensation is needed, due to use of the Master Slave method developed by our group. We will demonstrate the performance of such systems with full 360 degree tomographic images of scattering phantoms taken at different probe driving speeds, with different configurations of the probe heads.
630. The mechanism of inhibition of the corrosion of iron by sodium hydroxide solution (1950)

The first page of this article is displayed as the abstract.
Expression of endogenous retroviruses in blood mononuclear cells and brain tissue from multiple sclerosis patients (1995)

The aim of the present study was to examine whether there is an abnormal expression of certain endogenous retroviruses in MS patients. For this purpose samples of peripheral blood mononuclear cells were obtained from 22 MS patients, a corresponding number of age and sex-matched healthy donors and five patients with other diseases affecting the central nervous system. In addition, brain specimens of macroscopic normal white and gray matter from four MS patients and a similar number of controls were included in the study. Using an enzymatic amplification technique, we found expression of the endogenous retroviral sequences, HRES-1, HERV-K10 and ERV3 in most samples of peripheral blood mononuclear cells from MS patients and controls without obvious differences between these two groups. In contrast, composite transcripts of ERV3 and a zinc finger sequence were more frequently detected in healthy donors than in MS patients. At present, the possible significance of this is uncertain. The retroviral element 4-1 was not transcribed or only transcribed at a very low level in peripheral blood cells of controls and MS patients. Transcripts of various endogenous retroviruses were also detected in the brain samples, but a different pattern was not apparent in the MS group as compared with controls. Aspects concerning a possible association between endogenous retroviruses and autoimmunity are considered.
Large Scale Synthesis of SiC Nanofibers from Various Carbon Precursors (2008)

Submicron and micron sized graphitic particles were compared with multiwalled carbon nanotubes (MWNTs) as precursors for producing several grams of SiC nanofibers in a 3’’ diameter hotwalled chemical vapor deposition reactor. Nickel nitrate and the carbon precursor were dispersed in tetrahydro furan and dried to disperse the nickel used as a catalyst. Samples were characterized by SEM, TEM, EDS, and XRD. Carbon precursor size and shape, and nickel catalyst concentration are compared. While all carbon precursors produced single crystalline SiC nanofibers, large sized carbon precursors also produced large sized SiC particles by direct conversion. Small amounts of SiC fibers with low aspect ratios and wide ranging diameters and lengths were produced when little or no catalyst was used with carbon precursors. Surface area and volume of the carbon precursor is believed to have a large effect on the quality and quantity of SiC nanofibers produced.
Characterization of novel sugarcane expressed sequence tag microsatellites and their comparison with genomic SSRs (2006)

Abstract Microsatellites or simple sequence repeats (SSRs) are one of the most suitable markers for genome analysis as they have great potential to aid breeders to develop new improved sugarcane varieties. The development of SSR derived from expressed sequence tags (EST) opens new opportunities for genetic investigations at a functional level. In the present work, the polymorphism obtained with a subset of 51 EST–SSRs derived from sucest was compared with those generated by 50 genomic SSRs (gSSR) in terms of number of alleles, polymorphism information content, discrimination power and their ability to establish genetic relationships among 18 sugarcane clones including three Saccharum species ( S. officinarum , S. barberi , S. sinense ). The majority of EST–SSRs loci had four to six alleles in contrast to the seven to nine observed for the gSSRs loci. Approximately, 35% of the gSSRs had PIC values around 0.90 in contrast to 15% of the EST–SSRs. However, the mean discrimination power of the two types of SSR did not differ significantly as much as the average genetic similarity (GS) based on Dice coefficient. The correlation between GS of the two types of SSRs was high ( r = 0.71/P = 0.99) and significant. Although differences were observed between dendrograms obtained with each SSR type, both were in good agreement with pedigree information. The S. officinarum clone IJ76‐314 was grouped apart from the other clones evaluated. The results here demonstrate that EST–SSRs can be successfully used for genetic relationship analysis, extending the knowledge of genetic diversity of sugarcane to a functional level.
Improved Identification of Reservoir Heterogeneity with Advanced Derivative Profiles in Relation to Radii of Investigation (2022)

Abstract The identification of reservoir heterogeneity is normally attempted by constructing profiles of conventional well-test derivatives with transient-pressure data. Second-order derivatives are more sensitive than the first-order derivatives in the respective profiles with heterogeneity. Under actual operating conditions, the identification of heterogeneity is more complex than under ideal conditions because of the presence of noise. This study investigates how the degree of heterogeneity and the level of noise in the data strike a balance in identifying heterogeneity. In this study, different levels of premeditated, random noise are applied to the ideal pressure data to examine their impacts on the profiles of the first- and second-order derivatives. The resulting distortions are analyzed for clarity in identifying the known heterogeneity located at the predefined distances. Ideal pressure data is generated from well-behaved analytical solutions for flow through porous media with various levels of heterogeneity. Comparisons are made between the ideal and the distorted derivative profiles to assess the impact of noise in identifying heterogeneity. This also allows the determination of the radius of investigation with respect to the observed derivative profiles. The second-order derivatives enable a high-sensitivity analysis by offering features of variation in the derivative profiles as a function of time, even at low levels of reservoir heterogeneity. These features, however, may get smoothened out in the corresponding derivative profile of the actual data due to the presence of external noise in the raw pressure data. The impact of the noise in the raw data, and the subsequent, unintentional smoothening of the derivative profile depend on the level of reservoir heterogeneity that is being sought. This is also illustrated in the profiles of the first-order (e.g., primary pressure, or well-test or Bourdet) derivatives. Such a smoothening tendency limits the analyst's ability to identify small scales of reservoir heterogeneity in the corresponding derivative profiles. The second-order derivative profiles demonstrate more sensitivity than those of the first-order derivatives, when encountering reservoir heterogeneity. By identifying the heterogeneity at a known distance in the derivative profiles, a relationship with the radius of investigation with time has been established. Applying a de-noising technique to the noisy data restores some of the features in the derivative profile and helps estimate a more reliable magnitude of the radius of investigation. This study offers opportunities to analyze noisy responses in heterogeneous reservoirs by providing a relationship between the second-order derivative profile and the quantity of noise. As a result of the premeditated noise in the pressure data, the magnitudes of the estimated radius of investigation also get impacted. We have been able to quantify this impact by taking advantage of the known quantity of noise in a given case.
Efficient Synthesis and Applications of Peptides containing Adenylylated Tyrosine Residues (2011)

The enzyme DrrA of the human pathogen Legionella pneumophila adenylylates specifically a tyrosine of the GTPase Rab1. An efficient synthesis route using Fmoc solid phase peptide synthesis led to Tyr-adenylylated peptides and allowed the generation of mono-selective polyclonal antibodies against this post-translational modification.
Mitigation of Calcium Sulfate Scale Formation When Seawater Is Used To Prepare HCl-Based Acids (2012)

Abstract The damaging effect of calcium sulfate precipitation on the permeability of carbonate cores when mixing hydrochloric acid with seawater for matrix acid treatments has been identified in our recent work (SPE 143855). The objective of this work is to mitigate calcium sulfate precipitation by using a suitable scale inhibitor in hydrochloric acid. Another objective is to determine the scale inhibitor type, concentration, and whether it is needed in the preflush or post-flush stages. Core flood tests were conducted using Austin Chalk cores(1.5 in. × 6 in.) with a permeability of 5 md, to investigate the effectiveness of scale inhibitor. A synthetic seawater was prepared according to the composition of seawater in the Arabian Gulf. Calcium, sulfate ions, and scale inhibitor concentrations were analyzed in the core effluent samples. The minimum concentration of scale inhibitor was determined over a wide range of temperatures (77 to 210°F). A scale inhibitor (sulfonated terpolymer) was found to be compatible with hydrochloric acid systems, and can tolerate high concentrations of calcium (30,000 mg/l). Analysis of the core effluent indicated that the new treatment successfully eliminated calcium sulfate scale deposition. The concentration of scale inhibitor ranged from 20 to 250 ppm, depending on the scaling tendencies of calcium sulfate. This work confirms that an appropriate scale inhibitor can be added to acid, to avoid calcium sulfate precipitation when seawater is used to prepare hydrochloric acid for matrix acidizing.
Substrate engineering for monolithic integration of III-V semiconductors with Si CMOS technology (2008)

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.
Treatment of Spondylolisthesis and Spondylolysis in Children (1976)

There are 2 fairly common types of spondylolisthesis in children - dysplastic and isthmic. The dysplastic type is secondary to congenital defects at the lumbosacral joint. The isthmic is usually due to a fatigue fracture of the pars interarticularis but there is also an hereditary element in this type. Most children with spondylolisthesis never develop significant symptoms and even of those who do, the vast majority can be treated without surgery. If symptoms persist or if further olisthesis is occurring, a one-level spinal fusion done through a paraspinal approach is recommended. It is most important not to allow olisthesis to develop to the point that the child shows the cosmetically undesirable stigmata characteristic of the condition. Solid fusion can be obtained in every case and will stop further slip.