gebhart/patrepeval huggingface dataset:
A novel symbol frame and carrier frequency synchronization for burst mode OFDM signal (2002)

This paper proposes a novel synchronization method of jointly estimating symbol frame timing and carrier frequency offset for orthogonal frequency division multiplexing (OFDM) systems operating in the burst mode such as wireless LAN communications systems. The proposed method enables a rapid and accurate synchronization for the burst mode OFDM signal even under the presence of large frequency offset, very low C/N and frequency selective fading environments by using two training symbols inserted at the start of every burst frame.
Binary Synthetic Holograms (1974)

The positions and width of the fringes in a binary synthetic hologram are determined by the points at (x,y) that satisfy -q/2 </= x/T + Phi (x,y)/2pi + n </= q/2, where Phi(x,y) is the phase variation of the wavefront, T is the grating period, n is an integer, and q is a constant determining the fringe width. A method for finding an exact solution to this inequality is presented. The feasibility of the procedure has been tested by making binary synthetic holograms. Experimental results are presented, and extensions of the method are discussed.
Separation of derivatized glycosphingolipids into individual molecular species by high performance liquid chromatography. (1989)

The high performance liquid chromatography separation of the perbenzoyl derivatives of the neutral glycosphingolipids (GlcCer, LacCer, GbOse3Cer, GbOse4Cer, and GgOse3Cer) and the p-bromophenacyl and 2,4-dinitrophenyl hydrazide derivatives of the gangliosides (GM4, GM3, GM2, GM1, GD1a) into individual molecular species on a C18 reversed-phase column is described. Peaks were identified by comparing their relative retention times to the relative retention time of the corresponding glycosphingolipid of known molecular species composition. As little as 5 to 10 pmol of each molecular species of neutral glycosphingolipids and 3 to 5 pmol of the gangliosides can be detected. The effects of changes in the proportion of acetonitrile, methanol, and water in the mobile phase and of column temperature on the molecular species separation are described. A procedure for the tentative identification of glycosphingolipid molecular species based on their relative retention times is presented.
Utility of Perfusion-Weighted CT Imaging in Acute Middle Cerebral Artery Stroke Treated With Intra-Arterial Thrombolysis: (2001)

Lesion volumes on admission PWCT images approximate final infarct volume for patients with early complete recanalization of MCA stem occlusion. For those without complete recanalization, there is subsequent enlargement of lesion volume on follow-up. Initial PWCT lesion volumes also have predictive value; volumes >100 mL are associated with a poor clinical outcome. In these highly selected patients, initial PWCT lesion volume was a stronger predictor of clinical outcome than was initial NIH Stroke Scale score.
Electrical Capacitance Determination and Some Implications for an Electrostatic Spray-Charging Aircraft (1975)

ABSTRACT THE electrical capacitance versus height of a miniature model (scale 1:24.75) Cessna 180 aircraft was determined. A regression equation that describes the functional relation-ship between capacitance and eleva-tion of the model was derived. The equation was subsequently extended and verified for direct application to the full-size Cessna 180 aircraft. Theoretical considerations showed that undesirable fluctuating electric fields could develop from the constant changes in elevation of an electrostati-cally charged aircraft. Such problems can be checked by preventing a build-up of aircraft surface charge. Fabric as opposed to metal covering on an aircraft apparently has no influ-ence on capacitance.
Analysis of Roller/Ball Bearing Vibrations (1979)

Described is a vibration based diagnostic method aimed at detecting localized defects developing in roller/ball bearings. The signature is decomposed into generalized periodic functions and a search strategy for the various components developed and implemented. The method is shown to be applicable for cases where spectral analysis fails to give results.
[Pancreatic stone protein, a new marker for chronic pancreatitis]. (1988)

A CaCO3 precipitation and crystal growth inhibitor has recently been isolated from pancreatic calculi and from pancreatic juice. It is a glycoprotein with a molecular weight of 14,000, whose probable physiological role is the stabilization of exocrine pancreatic secretion which is normally supersaturated with CaCO3. It is hoped to determine a simple, but sensitive assay of this new protein on pancreatic juice and on serum, a decrease in which could be a marker for chronic pancreatitis.
AC Electrokinetics of Physiological Fluids for Biomedical Applications (2014)

Alternating current (AC) electrokinetics is a collection of processes for manipulating bulk fluid mass and embedded objects with AC electric fields. The ability of AC electrokinetics to implement the major microfluidic operations, such as pumping, mixing, concentration, and separation, makes it possible to develop integrated systems for clinical diagnostics in nontraditional health care settings. The high conductivity of physiological fluids presents new challenges and opportunities for AC electrokinetics-based diagnostic systems. In this review, AC electrokinetic phenomena in conductive physiological fluids are described followed by a review of the basic microfluidic operations and the recent biomedical applications of AC electrokinetics. The future prospects of AC electrokinetics for clinical diagnostics are presented.
Left ventricular hypertrophy (1995)

Left ventricular hypertrophy is often assumed to be little more than a marker for hypertension. In fact, the relation between diastolic or systolic blood pressure and left ventricular mass is not always close.1 2 Left ventricular hypertrophy is an independent risk factor for myocardial infarction and death in men and women with hypertension3 4 and in asymptomatic subjects with normal blood.5 6 In hypertensive patients it is a stronger coronary risk factor than casual blood pressure readings.

Early data from the Framingham study showed that patients with ST-T repolarisation abnormalities (“strain”) on the electrocardiogram had a sixfold increase in cardiac deaths over a 20 year follow up period.7

Echocardiography, however, is 5-10 times more sensitive than the electrocardiogram and detects left ventricular hypertrophy in 25-30% of all hypertensive patients.2 In such patients, myocardial infarction or death occurs at the rate of 4.6 events per 100 patient years, three times the risk in patients with hypertension and normal left ventricular mass.3 Women are not spared this increased risk.4 Even in asymptomatic subjects with normal blood pressure, increased left ventricular mass emerges as a risk factor for coronary disease, cardiac death, and all cause mortality.6 The relative risk of all cause mortality is 1.5 in men and 2.0 …
Arterial Wall Compliance in Diabetes (1992)

A non-invasive Doppler ultrasound technique, based on the measurement of pulse wave velocity along the aorta, has been used to deduce aortic compliance in 25 Type 1 and 25 Type 2 diabetic patients. Thirteen of the Type 1 diabetic group had their compliance measured within 1 year of diabetes first being clinically diagnosed. All compliance values were normalized for age and sex variations using data previously obtained from over 600 normal, non-diabetic subjects (mean normalized compliance +/- SD; 100 +/- 15%). The results show that Type 1 diabetic patients have significantly more distensible aortas (132 +/- 26%) than their age- and sex-matched non-diabetic counterparts (100 +/- 12%) (p less than 0.01), while Type 2 diabetic patients have significantly stiffer aortas (74 +/- 21%) than their age- and sex-matched non-diabetic counterparts (100 +/- 18%) (p less than 0.01). The young Type 1 diabetic patients measured within 1 year of diagnosis have aortas ranging up to 78% more distensible (151 +/- 15%) than their age- and sex-matched non-diabetic controls (100 +/- 11%) (p less than 0.001). These results support findings by other groups that adult diabetic patients have less distensible arteries than normal, but contradict reports in the literature dating back over 20 years that diabetic children have stiffer arteries than normal children.
Quantum size effects in transport properties of metallic films (1988)

The confinement of electrons in small dimensions can lead to a discretization of energy levels. The associated quantum size effects in turn lead to an out-of-plane conductivity that shows nonanalytic behavior in the approach to the classical limit. The principal size dependence of the conductivity is \ensuremath{\sim}1/d for a film of thickness d; however, there is also a correction term that has an essential singularity in the small parameter l/d, where l is the mean free path in a bulk sample. Surface roughness in the film is introduced by establishing two physical length scales. Variations in d on length scales shorter than l are treated quantum mechanically by a suitable coordinate transformation. On the other hand, large-scale fluctuations which might reflect the presence of grains are incorporated classically by segmenting the film into independent units of length l. Impurity effects have also been included and in fact crossover behavior in the conductivity is found from a surface-dominated to an impurity-dominated regime. The transport coefficients---conductivity and thermopower---are found to show oscillations as a function of d with a period of half the Fermi wavelength.
Effects of a novel fermented soy product on the serum lipids of hypercholesterolemic rabbits (2000)

The soy fermented product caused an 18.4% reduction in total cholesterol and a 17.8% increase in the HDL-fraction. It may, therefore, be a possible coadjutor in the treatment of hypercholesterolemia.
Predictive Control of Temperature in a Batch Reactor with Discrete Inputs (2005)

The paper deals with model predictive control (MPC) of systems with discrete inputs based on reachability analysis. The basic algorithm is - due to its MPC nature - suitable for controlling a wide spectrum of systems, provided that they have discrete inputs only, therefore its advantages are especially evident when dealing with relatively complex systems. The tree of evolution used by the algorithm is tackled, cost function selection is discussed and a universal cost function form is proposed. Computational complexity of the control method is treated thoroughly and an approach for reducing it by holding the inputs through a number of time steps is presented. Usability of the algorithm is verified on a batch reactor simulation example. The basic approach and the approach with holding the inputs through a number of time steps are compared. The results suggest that the latter can significantly improve control, especially when dealing with stiff systems such as the batch reactor
Endocytosis of asialoglycoprotein-enzyme conjugates by hepatocytes. (1980)

Desialylated glycoproteins were covalently linked to two cytochemically detectable enzymes, horseradish peroxidase or tyrosinase, and injected intravenously in amounts of approximately 0.5 per cent of total plasma glycoproteins into rats. Comparative studies of the rates of disappearance and distribution of free enzyme and conjugates established that recognition of the conjugates by the plasma membranes of hepatocytes was due to the exposure of the terminal galactose residue of the desialylated glycoproteins. At 1 minute after injection, reaction products of the enzyme markers were seen in coated pits and vesicles, elongated pinocytic channels and pleomorphic vesicles, at or close to the sinusoidal surface of hepatocytes. Vesicles containing reaction products were also observed along the lateral surfaces of hepatocytes. By 10 minutes, reaction products were seen in residual bodies near the biliary poles of hepatocytes. These studies confirm the existence of hepatocellular channels previously seen only with large excess of hemoglobin or following partial hepatectomy. They also indicate that the specific receptor for asialoglycoproteins is not restricted to the sinusoidal surfaces of hepatocytes and that transport to the catabolic sites proceeds via cytoplasmic channels and vesicles.
Grain-size effects on electrical properties of <i>n</i>-type polycrystalline chemical vapor deposition Si films (1984)

The electrical properties of phosphorus-doped n-type polycrystalline Si films deposited by chemical vapor deposition were investigated as a function of both impurity concentration and average grain sizes in the films. Sets of simultaneously grown films with average grains ranging from &lt;1 to &gt;100 μm have been deposited on polished selected polycrystalline high-purity alumina substrates. The impurity concentrations were in the range 1015–1018 cm−3. The transport properties of the n-type polycrystalline films have been determined by Hall-effect measurements as a function of sample temperature in the range 77–420 °K using the van der Pauw technique. The experimental results are interpreted in terms of a grain-boundary model.
The Distribution of Trace Elements in Some Species of Phytoplankton Grown in Culture (1971)

INTRODUCTION In common with other plants, marine phytoplankton will only thrive if they are able to obtain essential trace elements. There is some evidence that shortages of available iron and manganese may occasionally restrict the growth of these organisms (Harvey, 1939, 1947). However, other essential trace metals are present in the sea at concentrations which, although very low, appear to be adequate to sustain abundant growth. The concentrations of trace elements necessary for optimum growth differ considerably from species to species (see e.g. Harvey, 1947; Goldberg, 1952). Krauss & Porter (1954) have demonstrated that manganese, iron and zinc are taken up by the freshwater alga Chlorella pyrenoidosa in proportion to their concentrations in the medium. However, this is not true for all elements, at least so far as the larger algae are concerned (Young & Langille, 1958). The concentrations of trace elements present in phytoplankton grown in culture may also depend on the age and density of the culture. Thus, Hayward (1969) has shown that although iron and zinc were initially rapidly taken up by Phaeodactylum tricornutum from a medium rich in chelated forms of these metals, their concentrations in the cells decreased as their numbers increased. The uptake of trace elements is not confined to those which have a definitely established physiological function.
Preparation of Mogroside V from Fresh Fruits of Luohanguo by High Performance Liquid Chromatography (2003)

Mogroside Ⅴ, a kind of sweet triterpene glycoside constituent, was isolated fro m fresh fruits of Luohanguo [ Siraitia grosvenorii (Swingle) C. Jeffrey ] with a series of steps, including extraction with water, separation on an AB-8 polymer adsor ption column, decoloration on a D-280 ion exchange column, preparation by semi -preparative high performance liquid chromatography and detection with silica gel G thin-layer chromatography. Alltech Econosphere NH 2 column was used at 4 0 ℃ with acetonitrile-water (68∶32, v/v) as mobile phase at a flow rate of 5 mL/min . UV detection wavelength was set at 203 nm. The purity of the product was 98 5%, and it can be used as standard sample. The chemical structure of mo groside Ⅴ was identified by 1H-NMR and 13 C-NMR.
Erratum: Measuring the Complex Optical Conductivity of Graphene by Fabry-Pérot Reflectance Spectroscopy (2017)

Scientific Reports 6: Article number: 34166; published online: 29 September 2016; updated: 19 January 2017. This Article contains an error in the Introduction section. “Here, H and E are the magnetic and electric fields, respectively, ε 0 = (n − ik)2 is the permittivity of free space, ε c is the complex relative permittivity, σ is the optical conductivity, and ω is the angular frequency of the incident monochromatic optical field.
On-line motion planning for medical applications (2002)

Enhancing the quality of surgical interventions is one of the main goals of surgical robotics. Thus we have devised a surgical robotic system for maxillofacial surgery which can be used as an intelligent intraoperative surgical tool. Up to now a surgeon preoperatively plans an intervention by studying two dimensional X-rays, thus neglecting the third dimension. In the course of the special research programme "Computer and Sensor Aided Surgery" a planning system has been developed at our institute, which allows the surgeon to plan an operation on a three dimensional computer model of the patient. Transposing the preoperatively planned bone cuts, bore holes, cavities, and milled surfaces during surgery still proves to be a problem, as no adequate means are at hand: the actual performance of the surgical intervention and the surgical outcome solely depend on the experience and the skill of the operating surgeon. In this paper we present our approach of a surgical robotic system to be used in maxillofacial surgery. Special stress is being laid upon the modelling of the environment in the operating theatre and the motion planning of our surgical robot.
Oxidative DNA damage is involved in cigarette smoke-induced lung injury in rats (2015)

Reactive oxygen species (ROS) induced by exogenous toxicants are suggested to be involved in carcinogenesis by oxidative modification of DNA. 8-Hydroxyl-2-deoxyguanosine (8-OHdG) has been considered as a reliable biomarker for oxidative DNA damage both in vivo and in vitro studies. But the effect of smoking on oxidative damage has not yet been fully elucidated. Wistar rats were exposed to cigarette smoke at concentrations of 20 and 60 % for 30 min, twice/day for 45 weeks. Then the histopathology of lung tissues, levels of ROS, 8-OHdG, and total antioxidant (T-AOC), expression of DNA repair enzymes, e.g. 8-oxyguaine DNA glycosylase (OGG1), and MutThomolog 1 (Oxidized Purine Nucleoside Triphosphatase, MTH1) were determined in urine, peripheral blood lymphocytes, and lung tissue. The results showed that long-term cigarette smoke exposure can cause obvious damages of lung tissue in rats. In addition, a significant and cigarette smoke concentration-dependent increase in ROS and 8-OHdG were observed compared with the non-exposed control rats. In contrast, the expression of OGG1 and MTH1, and T-AOC levels were obviously decreased after long-term exposure to cigarette smoke. These findings indicate that long-term exposure to cigarette smoker increases ROS levels, decreases total antioxidant capacity, and interferes DNA repair capacity that eventually induces oxidative DNA damage, which appears to play an important role in cigarette smoke-induced lung injury in rats, and determination of 8-OHdG levels might be a useful method for monitoring oxidative damage in cigarette smokers.
Robust active appearance models and their application to medical image analysis (2005)

Active appearance models (AAMs) have been successfully used for a variety of segmentation tasks in medical image analysis. However, gross disturbances of objects can occur in routine clinical setting caused by pathological changes or medical interventions. This poses a problem for AAM-based segmentation, since the method is inherently not robust. In this paper, a novel robust AAM (RAAM) matching algorithm is presented. Compared to previous approaches, no assumptions are made regarding the kind of gray-value disturbance and/or the expected magnitude of residuals during matching. The method consists of two main stages. First, initial residuals are analyzed by means of a mean-shift-based mode detection step. Second, an objective function is utilized for the selection of a mode combination not representing the gross outliers. We demonstrate the robustness of the method in a variety of examples with different noise conditions. The RAAM performance is quantitatively demonstrated in two substantially different applications, diaphragm segmentation and rheumatoid arthritis assessment. In all cases, the robust method shows an excellent behavior, with the new method tolerating up to 50% object area covered by gross gray-level disturbances.
Sevoflurane Provides Greater Protection of the Myocardium than Propofol in Patients Undergoing Off-pump Coronary Artery Bypass Surgery (2003)

Patients receiving sevoflurane for off-pump coronary artery surgery had less myocardial injury during the first 24 postoperative hours than patients receiving propofol. The results further support cardioprotective effects of sevoflurane.
Highly Efficient and Mild Copper‐Catalyzed N‐ and C‐Arylations with Aryl Bromides and Iodides (2004)

Mild, efficient, copper-catalyzed N-arylation procedures for nitrogen heterocycles, amides, carbamates, and C-arylation procedures for malonic acid derivatives have been developed that afford high yields of arylated products with excellent selectivity. The N-arylation of imidazole with aryl bromides or iodides was found to be greatly accelerated by inexpensive, air-stable catalyst systems, combining catalytic copper salts or oxides with a set of structurally simple chelating ligands. The reaction was shown to be compatible with a broad range of aryl halides, encompassing sterically hindered, electron-poor, and electron-rich ones, providing the arylated products under particularly mild conditions (50-82 degrees C). The lower limit in ligand and catalyst loading and the scope of Ullmann-type condensations catalyzed by complexes bearing those ligands with respect to the nucleophile class have also been investigated. Chelating Schiff base Chxn-Py-Al (1c) generates a remarkably general copper catalyst for N-arylation of pyrrole, indole, 1,2,4-triazole, amides, and carbamates; and C-arylation of diethyl malonate, ethyl cyanoacetate, and malononitrile with aryl iodides under mild conditions (50-82 degrees C). The new method reported here is the most successful to date with regard to Ullmann-type arylation of some of these nucleophiles.
Congestion control in BBN packet-switched networks (1989)

article Free Access Share on Congestion control in BBN packet-switched networks Authors: J. Robinson View Profile , Dan Friedman View Profile , Martha Steenstrup View Profile Authors Info & Claims ACM SIGCOMM Computer Communication ReviewVolume 20Issue 1Jan. 1990pp 76–90https://doi.org/10.1145/86587.86592Published:01 December 1989Publication History 12citation207DownloadsMetricsTotal Citations12Total Downloads207Last 12 Months20Last 6 weeks1 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF