gebhart/patrepeval huggingface dataset:
Adaptive Fixturing System for the Smart and Flexible Positioning of Large Volume Workpieces in the Wind-power Sector (2014)

Quality and productivity in a manufacturing process depend considerably on the toolkits used, whose basic functions are to position the component into a right position relative to the cutting tool and to hold the component tightly to avoid displacements during the machining. In this document the design of a smart and adaptive fixture is presented for the accurate positioning of a planet carrier with very strict requirements of tolerances and for an intelligent adjustment during the machining process when required. This device will allow the manufacturer reducing the manual inspections, automatizing the adjustment tasks and improving the machining process setup time, increasing consequently the productivity and achieving the required accuracy and the required geometrical quality of the part. The development of the intelligent fixturing will be focused mainly in the conception of a high precision actuator capable of moving the large part with the required tolerance. Moreover, a testbench has been developed that will allow validating the actuator, assuring therefore its applicability in the future industrialization of the fixture device.
Mercury Electrodes in Nucleic Acid Electrochemistry: Sensitive Analytical Tools and Probes of DNA Structure. A Review (2004)

This review is devoted to applications of mercury electrodes in the electrochemical analysis of nucleic acids and in studies of DNA structure and interactions. At the mercury electrodes, nucleic acids yield faradaic signals due to redox processes involving adenine, cytosine and guanine residues, and tensammetric signals due to adsorption/desorption of polynucleotide chains at the electrode surface. Some of these signals are highly sensitive to DNA structure, providing information about conformation changes of the DNA double helix, formation of DNA strand breaks as well as covalent or non-covalent DNA interactions with small molecules (including genotoxic agents, drugs, etc.). Measurements at mercury electrodes allow for determination of small quantities of unmodified or electrochemically labeled nucleic acids. DNA-modified mercury electrodes have been used as biodetectors for DNA damaging agents or as detection electrodes in DNA hybridization assays. Mercury film and solid amalgam electrodes possess similar features in the nucleic acid analysis to mercury drop electrodes. On the contrary, intrinsic (label-free) DNA electrochemical responses at other (non-mercury) solid electrodes cannot provide information about small changes of the DNA structure. A review with 188 references.
Blend of Polypropylene/Poly(lactic acid) for Medical Packaging Application: Physicochemical, Thermal, Mechanical, and Barrier Properties (2014)

The effect of polypropylene/poly(lactic acid) weight ratios on the properties of blend films compatilized with polypropylene-grafted-maleic anhydride were investigated with 100:0, 60:40, 50:50, 40:60, and 0:100 of weight ratio. The blend films were prepared by melt mixing technique and cast film extrusion. The results shown that the FTIR spectrum was confirmed the interaction between compatibilizer and polymers. Morphological investigation was distinctly seen a two phases system between polypropylene and poly(lactic acid). Increasing of PLA content from 40 to 60 wt.% resulting in decreased melting temperature and crystallinity from 158 °C to 154 °C and 38% to 31%, respectively. For tensile properties, modulus and tensile strength increased with increasing the PLA content, while elongation at break was drastically decreased from 500% (polypropylene) to less than 50% (blends). The barrier properties indicated that incorporation of poly(lactic acid) into polypropylene tend to increased water vapor permeability while oxygen permeability was decreased. From the morphology, thermal, mechanical, and barrier results, the polypropylene/poly(lactic acid) blends showed a typical immiscible polymer blend.
Perception of Face and Body Expressions Using Electromyography, Pupillometry and Gaze Measures (2013)

Traditional emotion theories stress the importance of the face in the expression of emotions but bodily expressions are becoming increasingly important as well. In these experiments we tested the hypothesis that similar physiological responses can be evoked by observing emotional face and body signals and that the reaction to angry signals is amplified in anxious individuals. We designed three experiments in which participants categorized emotional expressions from isolated facial and bodily expressions and emotionally congruent and incongruent face-body compounds. Participants' fixations were measured and their pupil size recorded with eye-tracking equipment and their facial reactions measured with electromyography. The results support our prediction that the recognition of a facial expression is improved in the context of a matching posture and importantly, vice versa as well. From their facial expressions, it appeared that observers acted with signs of negative emotionality (increased corrugator activity) to angry and fearful facial expressions and with positive emotionality (increased zygomaticus) to happy facial expressions. What we predicted and found, was that angry and fearful cues from the face or the body, attracted more attention than happy cues. We further observed that responses evoked by angry cues were amplified in individuals with high anxiety scores. In sum, we show that people process bodily expressions of emotion in a similar fashion as facial expressions and that the congruency between the emotional signals from the face and body facilitates the recognition of the emotion.
Errors in Children's Subtraction (1981)

Many of the errors that occur in children' subtraction are due to the use of incorrect strategies rather than to the incorrect recall of number facts. A production system is presented for performing written subtraction which is consistent with an earlier analysis of the nature of such a cognitive skill. Most of the incorrect strategies used by schoolchildren can be accounted for in a principled way by simple changes in the production system, such as the omission of individual rules or the inclusion of rules appropriate to other arithmetical tasks. The production system model is evaluated against a corpus of over 1500 subtraction problems done by 10‐year olds and is shown to account for about two‐thirds of the (nonnumber fact) errors. It also provides an alternative, simpler interpretation of the subtraction errors analysed by Brown and Burton (1978). Some implications for teaching are discussed.
An Efficient Conversion of N-Alkyllactams to N-Alkylthiolactams (1982)

Abstract The lactam-to-thiolactam transformation is of considerable utility in the synthesis of natural products.3 We report on a two-step preparative route for the thionation of N-alkyllactams that is (i) superior to that effected by P4S10 4,5 or diethylthiocarbamoyl chloride6 (ii) safer and more efficient than the sulfhydrolysis of lactamium salts with H2S,3 and (iii) cleaner and thermally milder than that accomplished by the use of Lawesson's reagent.7 The method is analogous to our lactone-to-thionolactone transformation8 and it consists of O-alkylation of the lactam (1) with R3O±BF4 (R=Me, Et),9 followed by treatment of the intermediate salt (2) with anhydrous NaSH10 in acetone at O°C. The following Table shows our results for the synthesis of thiolactams 9–13 when we apply our method (Method A) and those reported previously (Methods B-D).
Surface detection with subvoxel accuracy using facet model and IDDG operator (2006)

A surface detection algorithm with subvoxel accuracy is presented to extract edge and surface information from computed tomography (CT) images for virtual measurement and reverse engineering. The proposed algorithm employs the facet model and 3D IDDG operator to estimate the gradient vector and 3D directional derivatives. Subvoxel accuracy is achieved by locating the zeros of the 3D second directional derivative along the estimated gradient direction. Adaptive gradient threshold is used for the surface detector to improve the algorithm performance when applied to images with non-uniform contrast caused by CT artifacts, such as beam-hardening. Experiment results are presented to demonstrate the efficacy of the proposed method
Reactivities of the various protonic states in the reactions of papain and of L-cysteine with 2,2′- and with 4,4′- dipyridyl disulphide: evidence for nucleophilic reactivity in the un-ionized thiol group of the cysteine-25 residue of papain occasioned by its interaction with the histidine-159-asparagine-175 hydrogen-bonded system (1972)

Research Article| June 01 1972 Reactivities of the various protonic states in the reactions of papain and of L-cysteine with 2,2′- and with 4,4′- dipyridyl disulphide: evidence for nucleophilic reactivity in the un-ionized thiol group of the cysteine-25 residue of papain occasioned by its interaction with the histidine-159-asparagine-175 hydrogen-bonded system K Brocklehurst; K Brocklehurst 1Department of Biochemistry and Chemistry, St. Bartholomew's Hospital Medical College, University of London, Charterhouse Square, London EC1M 6BQ, U.K. Search for other works by this author on: This Site PubMed Google Scholar G Little G Little 1Department of Biochemistry and Chemistry, St. Bartholomew's Hospital Medical College, University of London, Charterhouse Square, London EC1M 6BQ, U.K. Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1972) 128 (2): 471–474. https://doi.org/10.1042/bj1280471 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation K Brocklehurst, G Little; Reactivities of the various protonic states in the reactions of papain and of L-cysteine with 2,2′- and with 4,4′- dipyridyl disulphide: evidence for nucleophilic reactivity in the un-ionized thiol group of the cysteine-25 residue of papain occasioned by its interaction with the histidine-159-asparagine-175 hydrogen-bonded system. Biochem J 1 June 1972; 128 (2): 471–474. doi: https://doi.org/10.1042/bj1280471 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1972 London: The Biochemical Society1972 Article PDF first page preview Close Modal You do not currently have access to this content.
ISI mitigation and channel tracking in MIMO-OFDM systems (2005)

When the channel response is longer than the guard interval in OFDM systems, inter-symbol interference (ISI) and intercarrier interference (ICI) occurs and this may seriously affect the receiver performance. In this paper, we consider the ISI and ICI mitigation in MIMO-OFDM systems. We propose to use a decision feedback technique for ISI cancellation and a cyclic reconstruction technique for ICI removal. Combining with the V-BLAST method, we obtain an iterative signal detection algorithm for MIMO-OFDM systems. Since the channel may be time-variant, we then further propose an adaptive time-domain channel tracking method. The algorithm can be implemented with IFFT so that its computational complexity is low. Simulations demonstrate that the proposed method can effectively enhance the overall MIMO-OFDM system performance.
Ambivalent Views on Political News (2003)

Sciendo provides publishing services and solutions to academic and professional organizations and individual authors. We publish journals, books, conference proceedings and a variety of other publications.
Indian Law Clinics and Externship Symposium Roundtable Discussion: Lawyering for Indigenous People (2008)

Several native and non-native Indian Law clinicians and scholars participated in a roundtable discussion on June 22, 2007 in Albuquerque, New Mexico to discuss lawyering for indigenous people. The attendees were organized into three different groups: discussants, respondents, and participants. The discussants began the dialogue and discussed their experiences in representing tribes to representing individual native clients in various areas of law. They discussed what it means as a lawyer "to do no harm" and their roles and challenges in teaching students how to serve native populations. The respondents provided their responses to the various topics presented by the discussants. The participants, the audience, provided the final responses to the comments made by both the discussants and respondents.
Mechanisms underlying proglucagon gene expression (2008)

The proglucagon gene (gcg) encodes a number of peptide hormones that are of cell-type specifically expressed in the pancreatic islets, the distal ileum and the large intestine, as well as certain brain neuronal cells. These hormones are important in controlling blood glucose homeostasis, intestinal cell proliferation, and satiety. More importantly, the major hormone generated in the pancreas (i.e. glucagon) exerts opposite effects to the ones that are produced in the intestines (i.e. glucagon-like peptide-1 (GLP-1) and GLP-2). To understand the mechanisms underlying cell-type-specific gcg expression may lead to the identification of novel drug targets to control endogenous hormone production for therapeutic purposes. Extensive in vitro examinations have shown that more than a half dozen of homeodomain (HD) proteins are able to interact with the gcg gene promoter and activate its expression. In vivo 'knock-out' mouse studies, however, cannot demonstrate the role of some of them (i.e. Cdx-2, Brn-4, and Nkx6.2) in the development of pancreatic islet alpha-cells, suggesting that these HD proteins may exert some redundant functions in the genesis of gcg-producing cells. Investigations have also revealed that gcg expression is controlled by both protein kinase A and Epac signaling pathways in response to cAMP elevation, and cell-type specifically controlled by insulin and the effectors of the Wnt signaling pathway. This review summarizes our current understanding on the mechanisms underlying gcg transcription and presented my interpretations on how the interactions between different signaling networks regulate gcg expression.
An Alternate Method to Springback Compensation for Sheet Metal Forming (2014)

The aim of this work is to improve the accuracy of cold stamping product by accommodating springback. This is a numerical approach to improve the accuracy of springback analysis and die compensation process combining the displacement adjustment (DA) method and the spring forward (SF) algorithm. This alternate hybrid method (HM) is conducted by firstly employing DA method followed by the SF method instead of either DA or SF method individually. The springback shape and the target part are used to optimize the die surfaces compensating springback. The hybrid method (HM) algorithm has been coded in Fortran and tested in two- and three-dimensional models. By implementing the HM, the springback error can be decreased and the dimensional deviation falls in the predefined tolerance range.
Picosecond optical sampling of GaAs integrated circuits (1988)

Direct electrooptic sampling is a noncontact optical-probing technique for measuring with picosecond time resolution the voltage waveforms at internal nodes within GaAs integrated circuits. The factors contributing to system bandwidth, sensitivity, spatial resolution, and circuit perturbation are discussed, as are the circuit requirements for realistic testing of analog and digital devices. Measurements of high-speed GaAs integrated circuits are presented, including time-domain waveform and timing measurements of digital and analog circuits and frequency-domain transfer function measurements of microwave circuits and transmission structures.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The use of tissue adhesive (isobutyl cyanoacrylate) and topical steroid (0.1 percent dexamethasone) in experimental tympanoplasty (1974)

Abstract Two main purposes in the present study were: 1. to determine the feasibility of using the tissue adhesive isobutyl 2‐cyanoacrylate in reconstructive middle ear surgery; and 2. to learn whether a potent topical corticosteroid (0.1 percent dexamethasone) would have beneficial anti‐inflammatory effects when placed in the tympanic cavity at the time of middle ear surgery. Tympanoplastic surgery was performed on 26 cat ears and six squirrel monkey ears; the animals were followed for six weeks to nine months postoperatively. The conclusions to be drawn from this experimental study are that presently the tissue adhesive isobutyl cyanoacrylate appears too toxic for use on the delicate middle ear structures; likewise, corticosteroids placed in the middle ear do not appear to have any beneficial effects in tympanoplasty surgery.
Cu pillar bump-on-trace (BoT) design for ultra low-k packaging (2013)

In this work, the design of a flip chip chip scale package (FCCSP) using 28 nm ultra low-k (ULK) die and copper (Cu) pillar BOT technology were presented and qualified by reliability test. Many tests and inspections were implemented to check the fabrication process quality such as bump shear test, die chipping/crack inspection after die saw, X-ray inspection after die bond reflow, and scanning acoustic microscopy (SAT) inspection after underfill dispersing and molding. In addition, the three-dimensional finite element analysis (FEA) was employed to compare the impact of molding compounds on the packaging stress before true experiment. All samples passed the open/short test and no underfill or ULK delamination was found by SAT and scanning electron microscopy (SEM) cross-section check after MSL-3 pre-condition, Thermal Cycling test (TCT), High Temperature Storage test (HTST) and Unbiased Highly Accelerated Stress Test (uHAST).
NATIONAL LTL CARRIERS: IN FOR THE LONG HAUL (2001)

SUBTITLE: AS LONGHAUL LESS-THAN-TRUCKLOAD BUSINESS HAS DECLINED, THE BIG NATIONAL CARRIERS HAVE ADAPTED TO NEW BUSINESS DEMANDS.
The effects of pentoxifylline on spinal cord blood flow after experimental spinal cord injury. (1999)

Previous clinical and experimental investigations have suggested that pentoxifylline, a methylxanthine, can improve cerebrovascular circulation and reduce cerebral edema in cerebrovascular disorders. Pentoxifylline's mechanism of action includes such rheologic effects as enhanced red cell deformability, alterations in leukocyte activation, and modification of coagulation parameters. The purpose of our investigation was to determine the effects of pentoxifylline in an experimental spinal cord injury model. A compression device was used to cause a reproducible spinal cord injury in adult female albino rats. Spinal cord blood flow was monitored using a laser Doppler flow meter pre- and postinjury for 4 hours. The experimental group (N = 7) was injected with pentoxifylline 10 minutes prior to injury. The control group (N = 5) received an identical protocol, except that this group was injected with an equal amount of saline. Results of this investigation revealed that pentoxifylline treatment significantly increased spinal cord blood flow. In the pentoxifylline-treated group, spinal cord blood flow was significantly higher from 120 to 240 minutes postinjury compared with that of the control group. We conclude that via its multiple physiologic effects, pentoxifylline significantly improves spinal cord blood flow in experimental spinal cord injury.
Immune-neuroendocrine interactions (1985)

Concepts and facts concerning immune-neuroendocrine interactions are discussed. The immune response elicits endocrine, autonomic, and brain functional changes. These changes can be mediated by soluble factors released by activated immunologic cells. As a result of these immune-neuroendocrine interactions the content of powerful agents such as hormones, neurotransmitters, and neuropeptides in the microenvironment of immunologic cells is modified. This leads to external immunoregulatory signals imposed upon autoregulatory mechanisms.
Biochemical Basis of Floral Color Polymorphism in a Heterocyanic Population of Trillium sessile (Liliaceae) (1989)

A study of flavonoids occurring within a heterocyanic population of Trillium sessile was made to determine the chemical basis of a common floral color polymorphism in this species. In the study population, three floral color phenotypes (red, pink, yellow) are determined primarily by the presence or absence of anthocyanin compounds in the petal tissue, and secondarily by quantitative differences in the concentration of several flavonol glycosides. Petals of red phenotypes contain both cyanidin 3-arabinoside and 3-diarabinoside, petals of pink phenotypes contain only cyanidin 3-arabinoside, and petals of yellow phenotypes lack cyanidin entirely. Quercetin 3-0-glucoside, quercetin 3-0-arabinoglucoside, quercetin 3–0-arabinogalactoside, and quercetin 3-0-arabinogalactosyl, 7-0-glucoside occur in petals of all three phenotypes but differ in relative amounts. Petals of the red phenotype have mostly 3-0-biosides, but lesser amounts of both quercetin 3-0-glucoside and the 3,7-0-triglycoside. Petals of the pink phenotype contain relatively equal amounts of quercetin mono-, di-, and triglycosides. Petals of the yellow phenotypes contain mostly quercetin 3,7-0-triglycosides, and less mono- and di-glycosides. Small amounts of a quercetin tetraglycoside were detected in petals of both yellow and pink phenotypes, but not in red phenotypes. The enhancement of quercetin polyglycoside biosynthesis in yellow petal phenotypes is attributed to the shunting of dihydroflavonol precursors to synthesis of quercetin compounds when their conversion to anthocyanins is blocked genetically.
Philtrum length and intercommissural distance in newborn infants. (1983)

In order to define standards for philtrum length and mouth width in the newborn infant, 198 term and preterm infants (27 to 41 gestational weeks) were examined. In every case the gestational age was determined chronologically and clinically and the philtrum length and mouth width (oral intercommissural distance) were measured by two observers using standard measurement techniques. Normal values are presented by plotting the mean +/- 2 SD for each gestational week versus the gestational age.
Unregenerated optical transmission at 10 Gbit/s via 204 km of standard singlemode fibre using a directly modulated laser diode (1993)

Using the new method of dispersion supported transmission, 10 Gbit/s signals from a directly modulated DFB laser at 1.53 μm wavelength are transmitted on standard singlemode fibre via 151 km without inline amplification. Using one inline optical amplifier, the record length of 204 km is bridged.
A Wrist-Type Fall Detector with Statistical Classifier for the Elderly Care (2010)

Falls are one of the most concerned accidents for elderly people and often result in serious physical and psychological consequences. Many researchers have studied fall detection techniques in various domain, however none released to a commercial product satisfying user requirements. We present a systematic modeling and evaluating procedure for best classification performance and then do experiments for comparing the performance of six procedures to get a statistical classifier based wrist-type fall detector to prevent dangerous consequences from falls. Even though the wrist may be the most difficult measurement location on the body to discern a fall event, the proposed feature deduction process and fall classification procedures shows positive results by using data sets of fall and general activity as two classes.