gebhart/patrepeval huggingface dataset:
High-Performance Polypropylene-Clay Nanocomposites by In-situ Polymerization with Metallocene/Clay Catalysts (2002)

A novel in-situ polymerization approach has been used to manufacture polyolefin–clay nanocomposites (see Figure) with amazingly enhanced performance. The nanocomposites demonstrate reduced thermal expansion coefficients, improved melt flow strengths, increased heat-distortion temperatures, and lowered gas diffusion coefficients. Their improved Young’s modulus may help these composites to compete with expensive engineering plastics.
ChemInform Abstract: PROTON NUCLEAR MAGNETIC RESONANCE AND LINE SHAPE ANALYSIS IN THE ALKALI METAL HYDROXIDES: LITHIUM HYDROXIDE, SODIUM HYDROXIDE, POTASSIUM HYDROXIDE AND RUBIDIUM HYDROXIDE (1985)

Abstract Die Form der 1 H‐NMR‐Linien der Hydroxide wird mit einem vier‐Spin‐Modell für planare Zick‐Zack‐Ketten berechnet und stimmt mit Ausnahme von LiOH gut mit der beobachteten Linien‐ Form überein.
Depth detection and image recovery in remote sensing by optical scanning holography (2002)

We propose an algorithm that can extract the depth location of a target from its complex hologram directly in optical remote sensing applications. The target is located in a 3-D space and its complex holo- gram is obtained by optical scanning holography. Once the target's depth has been extracted, we can recover the image of the target from its hologram. © 2002 Society of Photo-Optical Instrumentation Engineers.
<title>Manufacturable multimaterial integration: compound semiconductor devices bonded to silicon circuitry</title> (1995)

The integration of thin film optoelectronic devices with host substrates such as circuits, waveguides, and micromachines offers to the systems engineer the freedom to choose the optimal materials to achieve performance and cost objectives. In essence, the bonding of the thin film components becomes an integral part of the system packaging. The fabrication and integration of thin film compound semiconductor optoelectronic devices with a number of host substrates is presented. Thin film devices have been integrated with silicon circuits, and movable micromachines, and have been used to demonstrate three dimensionally interconnected systems. The three dimensionally integrated systems include detector arrays bonded directly on top of circuits for massively parallel processing of images, and vertical optical interconnections have been demonstrated between stacked layers of silicon circuits (which are transparent to the wavelength of light used) for a massively parallel processing architecture based upon low memory and high input/output.
RADIATION ECOLOGY ISSUES ASSOCIATED WITH MURINE RODENTS AND SHREWS IN THE CHERNOBYL EXCLUSION ZONE (2011)

This article describes major studies performed by the Chernobyl Center's International Radioecology Laboratory (Slavutich, Ukraine) on radioecology of murine rodents and shrews inhabiting the Chernobyl Exclusion Zone. The article addresses the long-term (1986-2005) and seasonal dynamics of radioactive contamination of animals and reviews interspecies differences in radionuclide accumulations and factors affecting the radionuclide accumulations. It is shown that bioavailability of radionuclides in the "soil-to-plant" chain and a trophic specialization of animals play key roles in determining their actual contamination levels. The total absorbed dose rates in small mammals significantly reduced during the years following the Chernobyl Nuclear Power Plant accident. In 1986, the absorbed dose rate reached 1.3-6.0 Gy h(-1) in the central areas of the Chernobyl Exclusion Zone (the "Red Forest"). In 1988 and 1990, the total absorbed dose rates were 1.3 and 0.42 Gy h(-1), respectively. In 1995, 2000, and 2005, according to the present study, the total absorbed dose rates rarely exceeded 0.00023, 0.00018, and 0.00015 Gy h(-1), respectively. Contributions of individual radiation sources into the total absorbed dose are described.
Paradoxical supine overdrainage with ventriculoatrial shunt (2015)

Antisiphoning devices and gravitational valves (ShuntAssistant) have been used successfully to decrease overdrainage of CSF due to postural change, by limiting the amount of CSF outflow in the upright position. The possible advantage of a VA configuration conferred by a smaller hydrostatic column is lessened by the lack of a longer, smaller diameter distal catheter. We observed subatmospheric intracranial pressure in supine patients with ventriculoatrial shunt, associated with headaches that were worse lying down and upon awakening in the morning.
Particle swarm optimization used as a control algorithm for adaptive PMD compensation (2004)

We introduce particle swarm optimization (PSO) into adaptive polarization-mode dispersion (PMD) compensation in a 40-Gb/s optical time-division-multiplexing communication system. In the searching process for automatic PMD compensation, the PSO algorithm has the merits of rapid convergence to the global optimum, without being trapped in local suboptima, and good robustness to noise. In this letter, we describe how to implement PSO as a component of a control algorithm in adaptive PMD compensation. Performance comparisons between global and local versions of PSO were carried out theoretically and experimentally. We also demonstrate that a time-varying PMD can be successfully tracked using the PSO technique.
Cracked pot chemistry: The role of analytical chemistry in archaeology (1985)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCracked pot chemistry: The role of analytical chemistry in archaeologyRalph O. Allen Cite this: J. Chem. Educ. 1985, 62, 1, 37Publication Date (Print):January 1, 1985Publication History Received3 August 2009Published online1 January 1985Published inissue 1 January 1985https://doi.org/10.1021/ed062p37Request reuse permissionsArticle Views224Altmetric-Citations4LEARN 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 InReddit PDF (4 MB) Get e-Alertsclose Get e-Alerts
A Nonlinear Smoothing Algorithm for Chaotic and Non-Chaotic Time Series (2002)

A new NARMA based smoothing algorithm is introduced for chaotic and non-chaotic time series. The new algorithm employs a cross validation method to determine the smoother structure, requires very little user interaction and can be combined with wavelet thresholding to further enhance the noise reduction. Numerical examples are included to illustrate the application of the new algorithm.
New Operative Approach in the Treatment of Chronic Osteomyelitis of the Tibial Diaphysis (1970)

Department of Surgery, Albert Einstein College of Medicine, 1825 Eastchester Road, Bronx, N. Y. 10461.
Anti-HIV-1 Activity and Structure-Activity Relationship of Cepharanoline Derivatives in Chronically Infected Cells (2001)

Cepharanthine (12-O-methyl cepharanoline) is a plant alkaloid and has been shown to inhibit tumour necrosis factor-alpha- or phorbol 12-myristate 13-acetate-induced HIV-1 replication in the chronically infected promonocytic cell line, U1. Its mechanism of action is considered to be the inhibition of nuclear factor kappaB, a potent inducer of HIV-1 gene expression. In this study, we have synthesized 96 derivatives of cepharanoline, including cepharanthine, and examined their inhibitory effects on HIV-1 replication in U1 cells. Among the 12-O-alkyl derivatives, cepharanthine proved to be the most active, and the activity decreased as the length of the alkyl chain increased. All of the 12-O-acyl derivatives were totally inactive, while a few 12-O-carbamoyl derivatives displayed modest activity. Since 12-O-ethyl derivatives were found to be as active as cepharanthine against HIV-1 replication, we further synthesized various 12-O-ethyl derivatives of cepharanoline. Among the derivatives, five proved to be more active inhibitors than cepharanthine, and the most active compound was 12-O-ethylpiperazinyl cepharanoline. The 50% effective concentrations of this compound and cepharanthine were 0.0041 and 0.028 microg/ml (0.0060 and 0.046 microM), respectively.
Femtosecond dynamics coupled to chemical barrier crossing in a Born-Oppenheimer enzyme (2011)

Contributions of fast (femtosecond) dynamic motion to barrier crossing at enzyme catalytic sites is in dispute. Human purine nucleoside phosphorylase (PNP) forms a ribocation-like transition state in the phosphorolysis of purine nucleosides and fast protein motions have been proposed to participate in barrier crossing. In the present study, (13)C-, (15)N-, (2)H-labeled human PNP (heavy PNP) was expressed, purified to homogeneity, and shown to exhibit a 9.9% increase in molecular mass relative to its unlabeled counterpart (light PNP). Kinetic isotope effects and steady-state kinetic parameters were indistinguishable for both enzymes, indicating that transition-state structure, equilibrium binding steps, and the rate of product release were not affected by increased protein mass. Single-turnover rate constants were slowed for heavy PNP, demonstrating reduced probability of chemical barrier crossing from enzyme-bound substrates to enzyme-bound products. In a second, independent method to probe barrier crossing, heavy PNP exhibited decreased forward commitment factors, also revealing mass-dependent decreased probability for barrier crossing. Increased atomic mass in human PNP alters bond vibrational modes on the femtosecond time scale and reduces on-enzyme chemical barrier crossing. This study demonstrates coupling of enzymatic bond vibrations on the femtosecond time scale to barrier crossing.
Comparative Effects of Subarachnoid Hyperbaric Bupivacaine and Tetracaine-Procaine for Cesarean Delivery (1991)

Hauch, M. A.; Hartwell, B. L.; Hunt, C. O.; Datta, S.; Robbins, Stephen M.D. Author Information
Ultracompact Low-Threshold Organic Laser (2014)

We report an ultracompact low-threshold laser with an Alq3:DCM host:guest molecular organic thin film gain layer. The device uses a photonic crystal nanobeam cavity which provides a high quality factor to mode volume (Q/V) ratio and increased spontaneous emission factor along with a small footprint. Lasing is observed with a threshold of 4.2 μJ/cm(2) when pumped by femtosecond pulses of λ = 400 nm wavelength light. We also model the dynamics of the laser and show good agreement with the experimental data. The inherent waveguide geometry of the structure enables easy on-chip integration with potential applications in biochemical sensing, inertial sensors, and data communication.
Changes to the sebum lipidome upon COVID-19 infection observed via rapid sampling from the skin (2021)

The authors acknowledge funding from the EPSRC Impact Acceleration Account for sample collection and processing, as well as EPSRC Fellowship Funding EP/R031118/1, the University of Surrey and BBSRC BB/T002212/1. Mass Spectrometry was funded under EP/P001440/1.
The Streptococcos suis sortases SrtB and SrtF are essential for disease in pigs (2018)

The porcine pathogen Streptococcus suis colonizes the upper respiratory tracts of pigs, potentially causing septicaemia, meningitis and death, thus placing a severe burden on the agricultural industry worldwide. It is also a zoonotic pathogen that is known to cause systemic infections and meningitis in humans. Understanding how S. suis colonizes and interacts with its hosts is relevant for future strategies of drug and vaccine development. As with other Gram-positive bacteria, S. suis utilizes enzymes known as sortases to attach specific proteins bearing cell wall sorting signals to its surface, where they can play a role in host-pathogen interactions. The surface proteins of bacteria are often important in adhesion to and invasion of host cells. In this study, markerless in-frame deletion mutants of the housekeeping sortase srtA and the two pilus-associated sortases, srtB and srtF, were generated and their importance in S. suis infections was investigated. We found that all three of these sortases are essential to disease in pigs, concluding that their cognate-sorted proteins may also be useful in protecting pigs against infection.
Adaptive Routing for Convergence Enhanced (2009)

A significant drive to consolidate data center net­ works on a single infrastructure is taking place. lO-Gigabit Ethernet is one of the contenders to fulfill the role of universal data center interconnect. One of the key features missing from conventional Ethernet is congestion management; this void is being filled by the standardization work of the IEEE 802.lQau working group. However, the schemes under consideration react to congestion only at the sources by reducing the transmission rates of hot flows, i.e., those detected as contributing to conges­ tion. This approach ignores a crucial aspect of many data center networks, namely, that there typically are multiple paths between any pair of end nodes. Before reducing transmission rates, it would make sense to look for an alternative, uncongested path first. Here, we propose an adaptive routing scheme that builds­ in a fully transparent way-on top of the existing 802.lQau schemes, by snooping the congestion notification frames to modify the routing behavior of the switching nodes. We demonstrate how this can lead to significant performance improvements by taking full advantage of path diversity.
The ultrastructural, histochemical, and biochemical development of the post-fertilization megagametophyte and the zygotic embryo of Pseudotsugamenziesii (1993)

Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) megagametophyte and embryo development were studied from fertilization until seed maturity, a period of about 71 days. The most important morphogenetic events occurred during the first 43 days. During this time lipid bodies and protein bodies increased rapidly in the megagametophyte. Lipids, proteins, and starch became evident in the embryo toward the end of the morphogenetic phase. The subsequent embryo maturation phase showed slight increases in size and number of megagametophyte lipid bodies and protein bodies, as well as an increase in protein body complexity. Later, in the mature seed, lipids and proteins were distributed uniformly in the megagametophyte. Starch was abundant in some regions of the embryo but not abundant in the megagametophyte. In mature seeds soluble sugars made up 2 and 3%, proteins 16 and 11%, and lipids 60 and 45% of the megagametophyte and embryo dry weight, respectively. Histochemical and ultrastructural observations confirmed these amounts of lipids and proteins and showed their distribution in megagametophytes and embryos during development.
Laser Altimetry for Low-flying Agricultural Aircraft (1994)

A laser-based altimetry system was developed to measure the low above-ground-level (AGL) altitudes that agricultural aircraft typically encounter during aerial applications. The laser altimetry system was evaluated on-board an aircraft under various conditions. Distance* signals of a range-finder, determined based on the time of flight of laser pulses reflected by a target were corrected for varying pitch angle of the aircraft to indicate AGL altitudes using an angle sensor.
Concurrent flip-flop and repeater insertion for high performance integrated circuits (2003)

For many years, CMOS process scaling has allowed a steady increase in the operating frequency and integration density of integrated circuits. Only recently, however, have we reached a point where it takes several clock cycles for global signals to traverse a complex digital system such as a modern microprocessor. Thus, interconnect latency must be taken into account in current and future design tools at the architectural as well as synthesis level. For this purpose, the author proposes a new latency-aware technique for the performance-driven concurrent insertion of flip-flops and repeaters in VLSI circuits. Overwhelming evidence showing an exponential increase in the number of pipelined interconnects with process scaling, for high-performance microprocessors as well as high-end ASICs, is also presented. This increase indicates a radical change in current design methodologies to cope with this new emerging problem.
A digital vehicle monitoring system based on 3G for public security (2010)

Along with the rapid development of 3rd generation mobile communication technologies and information technology, the use of digital vehicle monitoring system has significant value for public security. Based on the research and analysis of vehicle monitoring platforms, this paper proposes a secure architecture for digital vehicle monitoring system based on the 3G networks for public security. The proposed system is designed for police departments. This paper analyzes the key technologies of the system such as video management, data security, wireless network, and communication. Details about the design and implementation of the system are discussed in this paper. This system proposed enables the police department to increase the speed and precision of decision making for incidents to improve citizen service and to enhance video evidence. The solution discussed in this paper provides high scalability, efficiency, strong maneuverability and security.
Silicon-silicon anodic-bonding with intermediate glass layers using spin-on glasses (1996)

This paper presents for the first time the preparation of glass layers, suitable for the anodic bonding of two silicon substrates using a spin-on glass. In this process a liquid sol solution is used within a spin coating process. The solution is a mixture based on silica sol, organic silicon containing compounds, like TEOS (Tetraethylorthosilicate), and a sodium salt all dissolved in ethanol. After a careful thermal treatment, silica films containing up to 5% wt. Na/sub 2/O (sodium oxide) can be obtained with a thickness in the range from 600 nm to 1000 nm in one deposition step. The spin-on glass films are very smooth. Anodic bonding of two silicon substrates is possible with all films either prepared at temperatures of 420/spl deg/C, 540/spl deg/C or even higher.
Analgesic‐antitumor peptide inhibits proliferation and migration of SHG‐44 human malignant glioma cells (2011)

Malignant gliomas, the most common subtype of primary brain tumors, are characterized by high proliferation, great invasion, and neurological destruction and considered to be the deadliest of human cancers. Analgesic-antitumor peptide (AGAP), one of scorpion toxic polypeptides, has been shown to have antitumor activity. Here, we show that recombinant AGAP (rAGAP) not only inhibits the proliferation of gliomas cell SHG-44 and rat glioma cell C6, but also suppresses the migration of SHG-44 cells during wound healing. To explain these phenomena, we find that rAGAP leads to cell cycle of SHG-44 arrested in G1 phase accompanied by suppressing G1 cell cycle regulatory proteins CDK2, CDK6, and p-RB by means of the down-regulated protein expression of p-AKT. Meanwhile, rAGAP significantly decreases the production of NF-κB, BCL-2, p-p38, p-c-Jun, and p-Erk1/2 and further suppresses the activation of VEGF and MMP-9 in SHG-44 cells. These findings suggest rAGAP inhibit proliferation and migration of SHG-44 cells by arresting cell cycle and interfering p-AKT, NF-κB, BCL-2, and MAPK signaling pathways.
Small signal analysis of power systems: Eigenvalue tracking method and eigenvalue estimation contingency screening for DSA (2010)

Two aspects of small signal analysis of power systems are investigated in this dissertation. The first part presents the eigenvalue tracking method for power system stabilizer (PSS) placement. Traditional methods for determining PSS placements are based on the analysis of the interconnected system. However, the design of the PSS is based on a simplified single machine infinite bus (SMIB) model. A new method, the eigenvalue tracking method, makes a connection between the interconnected and system of SMIBs models to determine PSS placements. Thus, this method bridges the relationship between the way a PSS is designed and placed. This method will be compared to traditional methods for PSS placement, and it will be shown that the eigenvalue tracking method can outperform the traditional methods and should be included for a complete analysis to determine PSS placement.&#13;\n&#13;\nThe second part of this dissertation develops a new line outage screening method for dynamic security analysis (DSA). The new screening method extends the use of distribution factors commonly used in static security analysis (SSA) to DSA by using the factors with eigenvalue sensitivities to estimate the change in the eigenvalues due to a line outage. This method screens line outages by estimating the stability of the post-line-outage system equilibrium point. Using the estimated changes in the eigenvalues, several line outage severity indices will be created. These severity indices will be used to rank line outages in order of severity and will also be combined with the eigenvalue estimation screening method to form a more conservative line outage screening method.
Resultados finales del programa cubano con niños de territorios afectados por el accidente de Chernóbil (2019)

From 1990 till 2011, a free health care program for children from areas affected by the Chernobyl accident was organized and implemented by the Cuban Government.. A significant number of qualified personal in medicine and science collaborated with this program. The information gathered for more than 21 years and the conclusive results obtained in the program are presented here. During this time, 26 114 patients, 84 % children, mostly from Ukraine, Russia and Belarus were treated in the mentioned program. Other aspects of the Cuban medical assistance in Ukraine and the main results obtained in the radiological impact evaluation of the accident on the children treated in Cuba are also included.
Observed behavior and perceived value of authors in usenet newsgroups (2002)

In this paper we describe an evaluation of behavioral descriptors generated from an analysis of a large collection of Usenet newsgroup messages. The metrics describe aspects of newsgroup authors' behavior over time; such information can aid in filtering, sorting, and recommending content from public discussion spaces like newsgroups. To assess the value of a variety of these behavioral descriptors, we compared 22 participants' subjective evaluations of authors whose messages they read to behavioral metrics describing the same authors. We found that many metrics, particularly the longevity and frequency of participation, the number of newsgroups to which authors contribute messages, and the amount they contribute to each thread, correlate highly with readers' subjective evaluations of the authors