gebhart/patrepeval huggingface dataset:
[Long-term development of Permacath Quinton catheters used as a vascular access route for extra-renal detoxification]. (1994)

Between July 1984 and July 1991, we have inserted surgically 147 Permcath Quinton catheters in 126 uremic patients for the following reasons: group I: necessity of hemodialysis without vascular access for acute (group Ia: 44 patients) or chronic renal failure (group Ib: 11 patients); group II: difficulty of creation or loss of vascular access (group II: 45 patients); group III: hemodialysis for patients with short life expectation or contraindications for vascular access on their limbs (group III: 26 patients). The duration of use (+/- SD and range) were respectively for each group: 1.6 +/- 2 (0-10); 3.4 +/- 2.8 (1-11); 7.4 +/- 11 (0-50); 6.7 +/- 8.7 (0.1-34.5) months. Seventeen patients (group IV) coming from groups Ib and II preferred to go on with the use of their catheter for 10.5 +/- 13.5 (0.1-50) months rather than to use their arteriovenous fistula. The complications observed on whole population were: 11 septicemia responsible of 2 deaths, 9 cutaneous local infections, 28 total obstructions of the catheter, 17 partial obstructions with insufficient flow; 10 destructions of the catheter. In conclusion the Permcath Quinton catheter is an adequate long term vascular access for hemodialysis. It is well tolerated since it is preferred to the usual arteriovenous fistula by many patients who have both. The incidence of infection is low. However, obstruction (partial ou total) is frequent (29%), necessitating local fibrinolytic treatment.
Redes holográficas de volumen. Problema de la difracción cónica. (2001)

El objetivo de este trabajo es presentar una revision bibliografica de las teorias que abordan el problema de la propagacion de ondas electromagneticas en hologramas de volumen. Inicialmente se describe lo que es un holograma de volumen y las caracteristicas que definen su comportamiento, resumiendose ademas las principales tecnicas de registro y aplicaciones de estas estructuras. Se aborda a continuacion las teorias que estudian el calculo de la eficiencia difractivas de estos elementos presentandose los enfoques de mayor importancia, poniendose especial interes en el estudio de las aproximaciones realizadas y su significado. Por ultimo se aborda el problema de la difraccion conica en torno al cual se han desarrollado los trabajos realizados por los autores y sus colaboradores.
Seeing Around Street Corners: Non-Line-of-Sight Detection and Tracking In-the-Wild Using Doppler Radar (2020)

Conventional sensor systems record information about directly visible objects, whereas occluded scene components are considered lost in the measurement process. Non-line-of-sight (NLOS) methods try to recover such hidden objects from their indirect reflections - faint signal components, traditionally treated as measurement noise. Existing NLOS approaches struggle to record these low-signal components outside the lab, and do not scale to large-scale outdoor scenes and high-speed motion, typical in automotive scenarios. In particular, optical NLOS capture is fundamentally limited by the quartic intensity falloff of diffuse indirect reflections. In this work, we depart from visible-wavelength approaches and demonstrate detection, classification, and tracking of hidden objects in large-scale dynamic environments using Doppler radars that can be manufactured at low-cost in series production. To untangle noisy indirect and direct reflections, we learn from temporal sequences of Doppler velocity and position measurements, which we fuse in a joint NLOS detection and tracking network over time. We validate the approach on in-the-wild automotive scenes, including sequences of parked cars or house facades as relay surfaces, and demonstrate low-cost, real-time NLOS in dynamic automotive environments.
Preparation of low molecular weight hyaluronic acid and its angiogenesis effects (2007)

Purpose To study the angiogenesis effects of low molecular weight hyaluronic acid(LMWHA) prepared by hydrogen peroxide degradation and by hyaluronidase degradation method.MethodsLMWHAs were prepar the by hydrogen peroxide degradation and by hyaluronidase degradation,the chicken chorioallantoic membrane(CAM) model was used to test the angiogenesis effects of LMWHAs.ResultsThe CAM blood vessels of LMWHAs′ groups,with Mr value lower than 10 000,increased apparently compared to that of control group(P0.01),and the LMWHAs with different molecular weights had different effects on CAM blood vessel generation.ConclusionLMWHAs with Mr lower than 10 000 possessed angiogenesis effects.
Teach Yourself Web Publishing With Html 3.0 in a Week (1995)

From the Publisher:
Completely revised and updated, this book now covers the emerging HTML 3.0 specification, Netscape 2.0 extensions, Java and VRML. This text is designed for non-technical people. (Communications/Networking)
Mixed-Signal Charge-Domain Acceleration of Deep Neural Networks through Interleaved Bit-Partitioned Arithmetic (2020)

Albeit low-power, mixed-signal circuitry suffers from significant overhead of Analog to Digital (A/D) conversion, limited range for information encoding, and susceptibility to noise. This paper aims to address these challenges by offering and leveraging the following mathematical insight regarding vector dot-product---the basic operator in Deep Neural Networks (DNNs). This operator can be reformulated as a wide regrouping of spatially parallel low-bitwidth calculations that are interleaved across the bit partitions of multiple elements of the vectors. As such, the computational building block of our accelerator becomes a wide bit-interleaved analog vector unit comprising a collection of low-bitwidth multiply-accumulate modules that operate in the analog domain and share a single A/D converter(ADC). This bit-partitioning results in a lower-resolution ADC while the wide regrouping alleviates the need for A/D conversion per operation, amortizing its cost across multiple bit-partitions of the vector elements. Moreover, the low-bitwidth modules require smaller encoding range and also provide larger margins for noise mitigation. We also utilize the switched-capacitor design for our bit-level reformulation of DNN operations. The proposed switched-capacitor circuitry performs the regrouped multiplications in the charge domain and accumulates the results of the group in its capacitors over multiple cycles. The capacitive accumulation combined with wide bit-partitioned regrouping reduces the rate of A/D conversions, further improving the overall efficiency of the design.
Fabrication and metrology of high-precision freeform surfaces (2013)

Freeform applications are growing and include helmet-mounted displays, conformal optics (e.g. windows integrated into airplane wings), and those requiring the extreme precision of EUV. These non-rotationally symmetric surfaces pose challenges to optical fabrication, mostly in the areas of polishing and metrology. The varying curvature of freeform surfaces drives the need for smaller, more “conformal”, tools for polishing and reference beams for interferometry. In this paper, we present fabrication results of a high-precision freeform surface. We will discuss the total manufacturing process, including generation, pre-polishing, MRF<sup>®</sup>, and metrology, highlighting the capabilities available in today’s optical fabrication companies.
Simple Reed-Solomon Forward Error Correction (FEC) Scheme for FECFRAME (2013)

This document describes a fully-specified simple Forward Error Correction (FEC) scheme for Reed-Solomon codes over the finite field (also known as the Galois Field) GF(2^^m), with 2 <= m <= 16, that can be used to protect arbitrary media streams along the lines defined by FECFRAME. The Reed-Solomon codes considered have attractive properties, since they offer optimal protection against packet erasures and the source symbols are part of the encoding symbols, which can greatly simplify decoding. However, the price to pay is a limit on the maximum source block size, on the maximum number of encoding symbols, and a computational complexity higher than that of the Low-Density Parity Check (LDPC) codes, for instance.
MICA - A new generation of versatile instruments in robotic surgery (2010)

Robotic surgery systems are highly complex and expensive pieces of equipment. Demands for lower cost of care can be met if these systems are employable in a flexible manner for a large variety of procedures. To protect the initial investment the capabilities of a robotic system need to be expandable as new tasks arise. To oblige the needs of future robotic support in hospitals, the German Aerospace Center (DLR) has developed the versatile robotic system MiroSurge for medical applications. This paper presents a 3 DoF instrument for Minimally Invasive Robotic Surgery which is mounted to the hollow wrist of the DLR MIRO robot arm. The MICA instrument consists of a versatile drive train and a detachable task specific tool with its tool interface, shaft, 2 DoF wrist, 7 DoF force/torque sensor and the actuated functional end. With the current cable-driven tool, gripping and manipulation forces of above 10 N are feasible and dynamics is high enough for surgery at the beating heart.
The Aerodynamics of Golf Balls (1949)

The aerodynamic forces on golf balls were studied by dropping spinning balls through the horizontal wind stream of the B. F. Goodrich wind tunnel. The lift, L, and drag, D, were calculated from the drift of the balls, rotating at speeds, N, up to 8000 r.p.m. while falling through a wind stream having a velocity of 105 feet per second. For a standard dimple or mesh golf ball weighing 0.1 lb., the lift varied with the rotational speed as L=0.064 ×[1−exp(−0.00026N)], with a maximum observed value of 0.055 lb. or more than half the weight of the ball. The drag increased nearly linearly from about 0.06 lb. for no spin to about 0.1 lb. at 8000 r.p.m. For a smooth ball the lift was negative at all rotational speeds below 5000 r.p.m. Above this speed, the lift was positive but was less than for the standard ball. The drag for these balls was nearly constant at about 0.08 lb. Balls with shallower dimples than standard gave intermediate results. Driving tests were consistent with the wind tunnel results. These results explain why a golfer cannot obtain long drives with a ball having a smooth surface and why the standard dimple or mesh surface gives him greater distance and better control of the ball.
Mercaptan—Sulfur Reaction. Alkyl Trisulfides (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMercaptan—Sulfur Reaction. Alkyl TrisulfidesB. D. VineyardCite this: J. Org. Chem. 1966, 31, 2, 601–602Publication Date (Print):February 1, 1966Publication History Published online1 May 2002Published inissue 1 February 1966https://pubs.acs.org/doi/10.1021/jo01340a511https://doi.org/10.1021/jo01340a511research-articleACS PublicationsRequest reuse permissionsArticle Views335Altmetric-Citations31LEARN 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
Addressing substrate glutamine requirements for tissue transglutaminase using substance P analogues (1999)

We have investigated the effect on the substrate requirements for guinea pig liver (tissue) transglutaminase of a set of 11 synthetic glutamine substitution analogues making up the full sequence of the naturally occurring tissue transglutaminase substrate substance P. While a number of peptide sequences derived from proteins that are well‐recognized as tissue transglutaminase substrates have been studied, the enzyme activity using substitution analogues of full‐length natural substrates has not been investigated as thoroughly. Thus, our set of substance P analogues only differs from one to other by one amino acid mutation while the length (of the peptide) is maintained as in the natural parent peptide. Our results indicate that a glutamine residue is not recognized as substrate by the enzyme whether it is placed at the N‐ or C‐terminal or between two positively charged residues or between two proline residues. To further address the effect on enzyme activity of charged amino acids in the vicinity of the reactive glutamine residue, a new set of synthetic charge replacement analogues of substance P has been also studied. Together, the results have identified new minimal requirements for modification of a particular glutamine residue in a polypeptide chain. It would be of interest to set up a full set of such requirements in order to highlight potential glutamine residues as enzyme targets in the growing list of proteins that are being described as transglutaminase substrates.
A layered composite shell element for elastic and thermoelastic stress and stability analysis at large deformations (1990)

Abstract A finite shell element for layered fibre reinforced composite shells has been developed. The degeneration principle is used in combination with specific kinematic assumptions. The thermo‐elastic material is either described by the behaviour of the local components, i.e. fibre and matrix material laws and geometrical configuration in each layer, or by the overall orthotropic layer material laws. Thickness integration for obtaining the different contributions to the shell element's stiffness matrix is performed analytically and prior to the numerical in‐plane integration. This leads to a considerable saving in computer time during the incremental‐iterative analysis. Geometrical non‐linearities in terms of large deformations and material non‐linearities in terms of layer craccking are taken into account. Accompanying eigenvalue analyses allow the determination of the—sometimes rather complicated—buckling behaviour with non‐linear prebuckling deformations.
[The hypophysis of Monodelphis domestica (Marsupialia): the state of organ development and cell differentiation in the adenohypophysis on different days post partum]. (1991)

In the newborn gray short-tailed opossum, Monodelphis domestica, the fusion of the neurohypophysis and adenohypophysis has not finished. A compression of the adenohypophyseal vesicle is exerted by the neurohypophysis. The latter, as can be seen in a 12-day old specimen, finally, will be almost completely wrapped into the adenohypophysis. The adenohypophysis of the newborn and early pouch-young shows substantial growing on the basis of mitoses mainly in the pars intermedia, but in the pars distalis, too. Cytodifferentiation in the newborn, light microscopically, is indicated by an increasing heterogeneity of cell morphology which is most obvious in the cranial and caudal regions of the median sections. Electron microscopically, the presence of small quantities of granules as well as small quantities of golgi membranes and ribosomal endoplasmic reticulum, respectively, gives evidence of a beginning synthesis activity in the newborn.
Probability and Statistical Inference (2018)

This chapter focuses on statistical inference and probability in order to understand statistical quality control. The products are not always made from the same materials. At a minimum they might be made from different parts of the same pile of material. Also they might be made by different machines that do not have exactly the same characteristics. Therefore, the matches are different from each other. Each characteristic of the totality of matches is reflected in the sample with a probability determined by its frequency. This is random sampling. Sometimes situations occur in quality control where it is not appropriate to apply random sampling and the method of division is called “rational subgroup” is considered. The “variability” of a group of data refers to the situation in which measurements are spread out around the central value. The degree of variability is usually measured by the range, the mean deviation, or the standard deviation.
Influence of Ceria Doping on Oxygen Relaxation and Oxide Ion Conduction in Yttria Stabilized Cubic Zirconia (2011)

We have examined the oxygen relaxation and oxide ion conduction in yttria stabilized cubic zirconia, and the influence of the doped ceria content. Two maxima of the internal friction (IF) were observed for some CeO2 doped cubic Zr0.8-xCexY0.2O1.9 ceramics in the temperature range of 25∼420°C and at 9Hz using forced torsion method. The ceria addition reduced the amplitude of IF and the oxide ion conduction of Zr0.8-xCexY0.2O1.9. The result indicated that the doped CeO2 reduced the mobility of oxygen in yttria stabilized cubic zirconia even with the same concentration of defects.
Biological Activities of Hydrazone Derivatives (2007)

There has been considerable interest in the development of novel compounds with anticonvulsant, antidepressant, analgesic, antiinflammatory, antiplatelet, antimalarial, antimicrobial, antimycobacterial, antitumoral, vasodilator, antiviral and antischistosomiasis activities. Hydrazones possessing an azometine -NHN=CH- proton constitute an important class of compounds for new drug development. Therefore, many researchers have synthesized these compounds as target structures and evaluated their biological activities. These observations have been guiding for the development of new hydrazones that possess varied biological activities.
Nuclear export inhibitor leptomycin B induces the appearance of novel forms of human Mdm2 protein (2003)

The nuclear export inhibitor leptomycin B (LMB) prevents the export of proteins from the nucleus to the cytoplasm, protects p53 from Mdm2-mediated degradation and is a very potent inducer of the p53 transcriptional activity. Here we suggest that LMB can also interfere with the degradation of human Mdm2. In the presence of this drug, we observed two novel forms of this protein: a slow mobility form and an amino-terminal fragment with an apparent molecular mass of 32 kDa. The presence of this 32 kDa band is abolished with proteasome inhibitors, indicating that its appearance could be because of limited processing by the proteasome. These results may be useful in understanding the mechanism of degradation of Mdm2 by the proteasome.
Structure, function, and evolution of plant<i>O</i>-methyltransferases (2007)

Plant O-methyltransferases (OMTs) constitute a large family of enzymes that methylate the oxygen atom of a variety of secondary metabolites including phenylpropanoids, flavonoids, and alkaloids. O-Methylation plays a key role in lignin biosynthesis, stress tolerance, and disease resistance in plants. To gain insights into the evolution of the extraordinary diversity of plant O-methyltransferases, and to develop a framework phylogenetic tree for improved prediction of the putative function of newly identified OMT-like gene sequences, we performed a comparative and phylogenetic analysis of 61 biochemically characterized plant OMT protein sequences. The resulting phylogenetic tree revealed two major groups. One of the groups included two sister clades, one comprising the caffeoyl CoA OMTs (CCoA OMTs) that methylate phenolic hydroxyl groups of hydroxycinnamoyl CoA esters, and the other containing the carboxylic acid OMTs that methylate aliphatic carboxyl groups. The other group comprised the remaining OMTs, which act on a diverse group of metabolites including hydroxycinnamic acids, flavonoids, and alkaloids. The results suggest that some OMTs may have undergone convergent evolution, while others show divergent evolution. The high number of unique conserved regions within the CCoA OMTs and carboxylic acid OMTs provide an opportunity to design oligonucleotide primers to selectively amplify and characterize similar OMT genes from many plant species.
Relatively Small Increases in the Steady-State Levels of Nucleobase Deamination Products in DNA from Human TK6 Cells Exposed to Toxic Levels of Nitric Oxide (2005)

Nitric oxide (NO) is a physiologically important molecule that has been implicated in the pathophysiology of diseases associated with chronic inflammation, such as cancer. While the complicated chemistry of NO-mediated genotoxicity has been extensively study in vitro, neither the spectrum of DNA lesions nor their consequences in vivo have been rigorously defined. We have approached this problem by exposing human TK6 lymphoblastoid cells to controlled steady-state concentrations of 1.75 or 0.65 microM NO along with 186 microM O2 in a recently developed reactor that avoids the anomalous gas-phase chemistry of NO and approximates the conditions at sites of inflammation in tissues. The resulting spectrum of nucleobase deamination products was defined using a recently developed liquid chromatography/mass spectrometry (LC/MS) method, and the results were correlated with cytotoxicity and apoptosis. A series of control experiments revealed the necessity of using dC and dA deaminase inhibitors to avoid adventitious formation of 2'-deoxyuridine (dU) and 2'-deoxyinosine (dI), respectively, during DNA isolation and processing. Exposure of TK6 cells to 1.75 microM NO and 186 microM O2 for 12 h (1260 microM x min dose) resulted in 32% loss of cell viability measured immediately after exposure and 87% cytotoxicity after a 24 h recovery period. The same exposure resulted in 3.5-, 3.8-, and 4.1-fold increases in dX, dI, and dU, respectively, to reach the following levels: dX, 7 (+/- 1) per 10(6) nt; dI, 25 (+/- 2.1) per 10(6) nt; and dU, 40 (+/- 3.8) per 10(6) nt. dO was not detected above the limit of detection of 6 lesions per 10(7) nt in 50 microg of DNA. A 12 h exposure to 0.65 microM NO and 190 microM O2 (468 microM x min dose) caused 1.7-, 1.8-, and 2.0-fold increases in dX, dI, and dU, respectively, accompanied by a approximately 15% (+/- 3.6) reduction in cell viability immediately after exposure. Again, dO was not detected. These results reveal modest increases in the steady-state levels of DNA deamination products in cells exposed to relatively cytotoxic levels of NO. This could result from limited nitrosative chemistry in nuclear DNA in cells exposed to NO or high levels of formation balanced by rapid repair of nucleobase deamination lesions in DNA.
Edge-Cloud Collaborative Processing for Intelligent Internet of Things: A Case Study on Smart Surveillance (2018)

Limited processing power and memory prevent realization of state of the art algorithms on the edge level. Offloading computations to the cloud comes with tradeoffs as compression techniques employed to conserve transmission bandwidth and energy adversely impact accuracy of the algorithm. In this paper, we propose collaborative processing to actively guide the output of the sensor to improve performance on the end application. We apply this methodology to smart surveillance specifically the task of object detection from video. Perceptual quality and object detection performance is characterized and improved under a variety of channel conditions.