gebhart/patrepeval huggingface dataset:
High-frequency characterization of twisted-pair cables (2001)

A wave propagation method model is proposed for the extraction of propagation parameters of high-bit rate digital subscriber twisted-pair cables. The model is derived from the scattering parameters of a transmission line. The frequency dependence and the skin effect are studied. Experimental simulations are performed to evaluate the accuracy of the extracted parameters. Good agreement is found in the cases studied.
Laboratory performance of alternating pressure air mattresses (2011)

The performance of three different alternating pressure air mattresses with different geometries of air cell were compared (Nimbus 3, Heritage, Tamora Plus), using simple performance indices based on pressure mapping. The aim of this study was to examine the effect on performance of elevating the backrest and thigh section of the bed into sitting position. Ten healthy volunteers of various sizes were pressure-mapped over the full pressure cycle on three alternating pressure air mattresseses with differing cell geometries. This was then repeated with the beds profiled to a sitting position. Performance of the alternating pressure air mattresses in terms of their ability to redistribute pressure dynamically was assessed in the different positions. The different alternating pressure air mattresses performed similarly with the bed in the lying flat position, but smaller cells appeared to be more effective in the sitting position. A conclusion was made that cell geometry may have an effect on the ability of the mattress to achieve alternating behaviour in the sitting position.
Paradoxical dysregulation of the neural stem cell pathway sonic hedgehog‐gli1 in autoimmune encephalomyelitis and multiple sclerosis (2008)

Our data suggest that endogenous repair potential during chronic injury appears to be limited by inflammation-induced alterations in intrinsic NSC molecular pathways such as Gli1.
Synthesis and photopolymerization of cholesteric liquid crystalline diacrylates (1995)

Abstract The synthesis of chiral liquid crystalline diacrylates is described. By mixing one of them with non-chiral liquid crystalline diacrylates. cholesteric phases are obtained of which the wavelength of reflection can be chosen by the composition of the mixture. After isothermal photopolymerization of the mixture a crosslinked network is obtained with thermally stable properties.
The Detection of Deep Venous Thrombosis Using Labelled Urokinase (1975)

The use of 125I-labelled fibrinogen in the detection of venous thrombosis in the lower limbs is well established. However, the technique is limited in applicability since only actively forming thrombi may be detected efficiently. Urokinase, a fibrinolytic enzyme, has been labelled with 99mTc and found to be suitable for the detection and localisation of venous thrombi. Iodinated urokinase has also been investigated. The use of 99mTc-labelled urokinase allows the lower limbs and the pelvis to be scanned using either a rectilinear scanner or a gamma camera, whereas with iodinated urokinase thohand monitor method used in the fibrinogen technique is used. The fibrinolytic activity of the labelled urokinase was evaluated using the fibrin plate technique in order to verify that the urokinase was not denatured in the labelling process. In the series of patients studied, venography was undertaken when possible for comparison with the urokinase scan. The time between the onset of clinical symptoms and urokinase scanning ranged from two days to several months suggesting that both active and formed thrombi may be detected. In order to exclude non-specific uptake by the thrombi, several patients with unilateral calf thrombosis were scanned with 99mTc-labelled human serum albumen. The labelled urokinase was injected intravenously and scanning initiated after 15 minutes in order to allow the circulating blood level to stabilise.
Evaluation of current wet sludge disintegration techniques (1998)

The handling and processing of excess biomass produced in wastewater treatment plants is an important aspect of wastewaster treatment. Current approaches to sludge treatment include the wet destruction of the biosolids. This approach does not require preceding dewatering operations and enhances biodegradability of the sludge particles. However, high costs, corrosion problems and restricted knowledge still prevent wet sludge disintegration from realising its understanding of potential as an industrial process. This paper reviews the current state of the art and compares several wet sludge disintegration techniques, including mechanical, chemical, thermochemical, biological and oxidative treatments. © 1998 Society of Chemical Industry
An Accurate Automatic Quality-Factor Tuning Scheme for Second-Order <emphasis emphasistype="italic">LC</emphasis> Filters (2007)

This paper presents a scheme to accurately tune the quality factor of second-order LC bandpass filters. The information of the magnitude response at the center and one of the cutoff frequencies is used to tune both the amplitude and the quality factor of the filter using two independent yet interacting loops. Furthermore, the synergic interaction between the loops makes the proposed scheme stable and insensitive to the mismatch between the input amplitudes. A chip prototype was implemented in a 0.35-mum CMOS process and consumes 4.3 mA from a single 1.3-V supply. Measurement results show that at 1.97 GHz the quality factor is tunable from 60 to 220 while the amplitude is tunable between -15 and 0 dBm with worst case quality factor and amplitude tuning accuracies of 10% and 7%, respectively
Studies on the preparation and properties of conductive polymers. Part II. Novel method to prepare metallized plastics from metal chelates of polyamides (1991)

Abstract New metallized films were obtained by the reduction of polyamide metal chelate films with reducing agents. Polyamide metal chelates films exhibited excellent surface resistivity around 10°–10 1 Ω/cm 2 when treated with sodium borohydride aqueous solutions. Aqueous solutions of polyamide–formic acid with metal salts, and films prepared from those solutions, were analyzed by UV‐visible and IR spectroscopy, respectively, in order to investigate and identify the structure of the polyamide metal chelates. Factors that include kinds and concentrations of metal salts, kinds and concentrations of reducing agents, and reduction time, which may affect the conductivity of metallized films, were investigated. The surfaces of these films were treated with sodium borohydride aqueous solution to form a definite metallic luster appearance. The surfaces of these conductive films were proved to be metallized, by means of ESCA analysis. The strongly adhered metal on the films was believed to be responsible for the improvement in electrical conductivity. The mechanical properties and scanning electron microscope (SEM) observations were also studied.
Algorithms for region description and modifications based on chain code transformations (2005)

A new approach to region description and interpretation based on chain code transformation is presented. Chain codes are used to obtain syntactic expressions for concave and convex parts of boundary lines in a picture. Using these syntactic expressions, an algorithm for filling concavities and finding the convex hull of a region is derived. This algorithm is also suited to describe a region in terms of a list of convexities and concavities, and to analyze regions where small gaps and thin bridges are involved. Then, it is shown that expansion and shrinking of 4-connected objects can be performed by means of a chain code transformation.
Infant Predictors of Inhibited and Uninhibited Profiles (1991)

Previous research on subjects showing the two temperamental profiles called inhibited and uninhibited to unfamiliar events suggests that the two groups differ in threshold of reactivity to novelty. Hence, variation among infants in behavioral reactivity to unfamiliar events might predict later display of the two profiles. In a longitudinal study of 94 four-month-old infants, those who displayed the combination of high motor activity and frequent crying to stimulation were more fearful to unfamiliar events at nine and 14 months than infants who displayed both low motor activity and infrequent crying. This result implies that the processes that mediate early reactivity to stimulation may also influence a later preparedness to avoid or to approach unfamiliarity.
OpenSense (2010)

This paper outlines a vision for community-driven sensing of our environment. At its core, community sensing is a dynamic new form of mobile geosensor network. We believe that community sensing networks, in order to be widely deployable and sustainable, need to follow utilitarian approaches towards sensing and data management. Current projects exploring community sensing have paid less attention to these underlying fundamental principles. We illustrate this vision through OpenSense -- a large project that aims to explore community sensing driven by air pollution monitoring.
MarkeTrak VII (2007)

In Brief Despite great advances in hearing aid technology, the latest MarkeTrak study finds that significantly increasing the utilization of amplification requires other advances as well. These include raising awareness by consumers of their hearing loss and its impact on their lives and spreading the realization that existing solutions are effective and offer good value.
Performance enhancement of EDCA access mechanism of IEEE 802.11e wireless LAN (2008)

IEEE 802.11e has a new coordination function, which has both contention-based and contentionfree medium access methods, in order to support applications with Quality of Service (QoS) requirements. The contentionbased MAC protocol, Enhanced Distributed Channel Access (EDCA) supports QoS; however, it cannot guarantee strict QoS required by real-time applications without proper tuning of QoS parameters and network control mechanisms. In this paper we adjust QoS parameters trading off between call admission control and rate control to enhance the EDCA access mechanism of IEEE 802.11e wireless LAN. Performance of the proposed scheme is analyzed using an OPNET modeler 12.0.
The challenge to verify ceramide's role of apoptosis induction in human cardiomyocytes - a pilot study (2011)

Ceramid induces and amitryptiline suppresses apoptosis significantly in our ex vivo setting. This finding warrants further studies aiming to evaluate potential beneficial effects of selective inhibition of apoptosis inducing mediators on the suppression of ischemia/reperfusion injury in clinical settings.
DNase I Hypersensitivity and ϵ-Globin Transcriptional Enhancement Are Separable in Locus Control Region (LCR) HS1 Mutant Human β-Globin YAC Transgenic Mice (2010)

Expression of the five beta-like globin genes (epsilon, Ggamma, Agamma, delta, beta) in the human beta-globin locus depends on enhancement by the locus control region, which consists of five DNase I hypersensitive sites (5'HS1 through 5'HS5). We report here a novel enhancer activity in 5'HS1 that appears to be potent in transfected K562 cells. Deletion analyses identified a core activating element that bound to GATA-1, and a two-nucleotide mutation that disrupted GATA-1 binding in vitro abrogated 5'HS1 enhancer activity in transfection experiments. To determine the in vivo role of this GATA site, we generated multiple lines of human beta-globin YAC transgenic mice bearing the same two-nucleotide mutation. In the mutant mice, epsilon-, but not gamma-globin, gene expression in primitive erythroid cells was severely attenuated, while adult beta-globin gene expression in definitive erythroid cells was unaffected. Interestingly, DNaseI hypersensitivity near the 5'HS1 mutant sequence was eliminated in definitive erythroid cells, whereas it was only mildly affected in primitive erythroid cells. We therefore conclude that, although the GATA site in 5'HS1 is critical for efficient epsilon-globin gene expression, hypersensitive site formation per se is independent of 5'HS1 function, if any, in definitive erythroid cells.
Autonomous Information Unit for Fine-Grain Data Access Control and Information Protection in a Net-Centric System (2012)

As communication and networking technologies advance, networks will become highly complex and heterogeneous, interconnecting different network domains. There is a need to provide user authentication and data protection in order to further facilitate critical mission operations, especially in the tactical and mission-critical net-centric networking environment. The Autonomous Information Unit (AIU) technology was designed to provide the fine-grain data access and user control in a net-centric system-testing environment to meet these objectives. The AIU is a fundamental capability designed to enable fine-grain data access and user control in the cross-domain networking environments, where an AIU is composed of the mission data, metadata, and policy. An AIU provides a mechanism to establish trust among deployed AIUs based on recombining shared secrets, authentication and verify users with a username, X.509 certificate, enclave information, and classification level. AIU achieves data protection through (1) splitting data into multiple information pieces using the Shamir's secret sharing algorithm, (2) encrypting each individual information piece using military-grade AES-256 encryption, and (3) randomizing the position of the encrypted data based on the unbiased and memory efficient in-place Fisher-Yates shuffle method. Therefore, it becomes virtually impossible for attackers to compromise data since attackers need to obtain all distributed information as well as the encryption key and the random seeds to properly arrange the data. In addition, since policy can be associated with data in the AIU, different user access and data control strategies can be included. The AIU technology can greatly enhance information assurance and security management in the bandwidth-limited and ad hoc net-centric environments. In addition, AIU technology can be applicable to general complex network domains and applications where distributed user authentication and data protection are necessary. AIU achieves fine-grain data access and user control, reducing the security risk significantly, simplifying the complexity of various security operations, and providing the high information assurance across different network domains.
Checkpoint/Restart of Virtual Machines Based on Xen (2006)

System level virtualization provides several advantages: (i) customization is eased since virtual machines may be based on different systems; (ii) virtual machines are isolated from hardware, subsequently applications are isolated via the virtual machines; (iii) basic fault tolerance mechanisms -- pro-active fault tolerance through virtual machine migration and virtual machine snapshot/restore; and (iv) basic load balancing mechanisms -- the capability to move and stop virtual machines running in the system. However, the current Xen implementation does not natively provide mechanisms for virtual machine checkpoint/restart. This document presents the design of a reactive fault tolerant system, based on a checkpoint/restart mechanism for Xen virtual machines. We present the infrastructure for the management of virtual machines' checkpoint data as well as challenges for the implementation of a virtual machine checkpoint/restart mechanism based on Xen.
High Activity of Pt/AlPO4 Catalyst for Selective Catalytic Reduction of Nitrogen Monoxide by Propene in Excess Oxygen (2003)

Abstract The activity of Pt(0.5 wt%)/AlPO4 for C3H6-SCR was found to be much higher than that of Pt(0.5 wt%)/Al2O3; although the selectivity toward N2O of both the catalysts were comparable, the maximal conversion of NO to N2 by Pt(0.5 wt%)/AlPO4 was higher than that by Pt(0.5 wt%)/Al2O3, and moreover the temperature window of the former located in lower side than that of the latter. The superiority of Pt(0.5 wt%)/AlPO4 was discussed on the basis of the results of XPS measurements.
Low Linolenic Soybean Variety Trial (2005)

Introduction This project is designed to compare the yields of the new Iowa State low linolenic soybean varieties with soybean varieties commonly grown in the territory covered by the Southeast Research Farm near Crawfordsville, Iowa. The territory where these low linolenic soybeans were grown was fairly broad, so the varieties used in this trial varied by one maturity range. The new low linolenic soybean varieties are adapted to the area surrounding the research facility, and producers will need performance data to determine whether the premium offered for growing the new soybeans is adequate. Premiums are designed to cover yield drag and identity preservation costs.
Comparing the performance of the Widex SENSO digital hearing aid with analog hearing aids. (1998)

Differences in performance were evaluated between the Widex SENSO and several analog hearing aids currently worn by 50 hearing-impaired subjects. Subjects were initially fit with the SENSO using the manufacturer's recommended procedure. After wearing the hearing aids for 1 week, the adjustable parameters were fine-tuned based on subjective comments. Differences in performance between the SENSO and the subjects' current hearing aids were assessed using the Speech Perception in Noise administered at overall levels of 50, 65, and 80 dB SPL; the Hearing in Noise Test in which the background noise was presented at 50, 65, and 80 dBA; the Abbreviated Profile of Hearing Aid Benefit; and two questionnaires relating to overall preference between the SENSO and the subjects' current hearing aids.
A Simple and Rapid Analysis of Triplet Repeat Diseases by Expand Long PCR (2001)

It is now known that 15 monogenic, mostly neurological, disorders are caused by the same type of mutations that occur in trinucleotide repeat sequences in certain genes. Since they share a nonspecific and variable phenotype, the accurate diagnosis could be made only by DNA analysis. We developed an Expand Long PCR assay that provides more reliable molecular diagnosis of such disorders. Its main characteristics are robust amplification of expanded alleles, simplicity, low cost and speed. We suggest the use of Expand Long PCR for routine molecular diagnosis of triplet repeat diseases, and present such analysis of the fragile X syndrome, myotonic dystrophy and Huntington's disease.
A short survey of the Solifugae of South Africa (1919)

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Elliptically modulated self-trapped singular beams in nonlocal nonlinear media: ellipticons (2007)

We introduce a new class of elliptically modulated self-trapped singular beams in isotropic nonlinear media where nonlocality plays a crucial role in their existence. The analytical expressions in the highly nonlocal nonlinear limit of these elliptically shaped self-trapped beams, or ellipticons, is obtained and their existence in more general nonlocal nonlinear media is demonstrated. We show that the ellipticons represent a generalization of several known self-trapped beams, for example vortex solitons, azimuthons, and the Hermite and Laguerre solitons clusters. For the limit of the highly nonlocal nonlinear medium, the ellipticons are described in close form in terms of the InceGauss functions.
Rate Optimization for Multiuser MIMO Systems With Linear Processing (2008)

This paper focuses on linear transceiver design for rate optimization in multiuser Gaussian multple-input multiple-output (MIMO) systems. We focus on two design criteria: 1) maximizing the weighted sum rate subject to a total power constraint; 2) maximizing the minimum user rate subject to a total power constraint. For these problems, new power allocation strategies are derived, which can be formulated as geometric programs (GPs) involving mean square errors (MSEs). Based on these solutions, we propose iterative algorithms, where each iteration contains the optimization of the uplink power, uplink receive filters, and downlink receive filters. Monotonic convergence of the algorithms is proved. Simulations show that the algorithms outperform existing linear schemes. Additionally, we extend the results to other variations of the problems, such as, the problem of sum-rate constrained or user-rate constrained power minimization, and the problem of sum-rate maximization subject to user-rate constraints and a total power constraint.
Nuclear Entry of High-Risk Human Papillomavirus Type 16 E6 Oncoprotein Occurs via Several Pathways (2003)

The E6 oncoprotein of high-risk human papillomavirus type 16 (HPV16) interacts with several nuclear transcription factors and coactivators in addition to cytoplasmic proteins, suggesting that nuclear import of HPV16 E6 plays a role in the cellular transformation process. In this study we have investigated the nuclear import pathways of HPV16 E6 in digitonin-permeabilized HeLa cells. We found that HPV16 E6 interacted with the karyopherin (Kap) alpha2 adapter and could enter the nucleus via a classical Kap alpha2beta1-mediated pathway. Interestingly, HPV16 E6 also interacted, via its basic nuclear localization signal (NLS) located at the C terminus, with both Kap beta1 and Kap beta2 import receptors. Binding of RanGTP to these Kap betas inhibited their interaction with HPV16 E6 NLS. In agreement with these binding data, nuclear import of the HPV16 E6 oncoprotein in digitonin-permeabilized HeLa cells could be mediated by either Kap beta1 or Kap beta2. Nuclear import via these pathways required RanGDP and was independent of GTP hydrolysis by Ran. Significantly, an E6(R124G) mutant had reduced nuclear import activity, and the E6 deletion mutant lacking (121)KKQR(124) was not imported into the nucleus. The data reveal that the HPV16 E6 oncoprotein interacts via its C-terminal NLS with several karyopherins and exploits these interactions to enter the nucleus of host cells via multiple pathways.
Laser Marked Codes For Paperless Tracking Applications (1987)

The application of laser markers for marking machine readable codes is described. Use of such codes for automatic tracking and considerations for marker performance and features are discussed. Available laser marker types are reviewed. Compatibility of laser/material combinations and material/code/reader systems are reviewed.
ChemInform Abstract: ANTICOAGULANT ACTIVITY OF 3,5‐DISUBSTITUTED TETRONIC ACIDS (1979)

Abstract Wie im Formelschema skiziiert werden die Tetronsäuren (IVa) und (IVb) synthetisiert, (IVc) entstehen durch Cyclisierung entsprechender bromierter Acetessigsäureester.
Probing the Lithium Ion Storage Properties of Positively and Negatively Carved Silicon (2011)

Here, we report Si pillar and well arrays as tailored electrode materials for advanced Li ion storage devices. The well-ordered and periodic morphologies were formed on a Si electrode thin film via laser interference lithography followed by a dry etch process. Two different patterns of negatively or positively carved Si electrodes exhibited highly improved cycle performance as a consequence of the enlarged surface area and the nanoscale pattern effects. The Si well arrays showed the highest energy density, rate capability, and cycling retention among the prepared Si electrodes. This tailored electrode platform demonstrates that these design principles could be applied to future developments in Si electrodes.