gebhart/patrepeval huggingface dataset:
Chemical Composition and Antimicrobial Activity of the Essential Oil of <i>Stachys officinalis</i> (L.) <scp>Trevis</scp>. (Lamiaceae) (2013)

Characterization by GC-FID and GC/MS analyses of the Stachys officinalis (L.) Trevis. essential oil obtained by hydrodistillation of the aerial parts allowed the identification of 190 components that represented 97.9% of the total oil content. The main constituents identified were germacrene D (19.9%), β-caryophyllene (14.1%), and α-humulene (7.5%). Terpenoids were by far predominant (89.4%), with sesquiterpene hydrocarbons (69.1%) and oxygenated sesquiterpenes (14.8%) being the most abundant compounds detected in the oil. Based on the present and previously published results, multivariate statistical comparison of the chemical composition of the essential oils was performed within the species. Principal component analysis (PCA) and agglomerative hierarchical clustering (AHC) of the data on the volatile profiles of S. officinalis taxa revealed no pronounced differences among the samples originated from the Balkan Peninsula. Additionally, the oil was screened for in vitro antibacterial and antifungal activity using the broth microdilution assay. The oil's best antimicrobial activities were obtained against the mold Aspergillus niger (minimal inhibitory (MIC) and minimal fungicidal (MFC) concentrations of 2.5 and 5.0 mg/ml, resp.) and the yeast Candida albicans (MIC and MFC of 5.0 mg/ml).
Robotics in neurosurgery: state of the art and future technological challenges (2004)

The use of robotic technologies to assist surgeons was conceptually described almost thirty years ago but has only recently become feasible. In Neurosurgery, medical robots have been applied to neurosurgery for over 19 years. Nevertheless this field remains unknown to most neurosurgeons. The intrinsic characteristics of robots, such as high precision, repeatability and endurance make them ideal surgeon's assistants. Unfortunately, limitations in the current available systems make its use limited to very few centers in the world. During the last decade, important efforts have been made between academic and industry partnerships to develop robots suitable for use in the operating room environment. Although some applications have been successful in areas of laparoscopic surgery and orthopaedics, Neurosurgery has presented a major challenge due to the eloquence of the surrounding anatomy. This review focuses on the application of medical robotics in neurosurgery. The paper begins with an overview of the development of the medical robotics, followed by the current clinical applications in neurosurgery and an analysis of current limitations. We discuss robotic applications based in our own experience in the field. Next, we discuss the technological challenges and research areas to overcome those limitations, including some of our current research approaches for future progress in the field.
DiffScreen: the merging of image subtraction and molecular genetics for the rapid analysis of differentially screened cDNA libraries (1994)

DiffScreen: the merging of image subtraction and molecular genetics for the rapid analysis of differentially screened cDNA libraries Get access Brett K. Tizard, Brett K. Tizard 1Department of Neuropathology, Royal Perth HospitalWellington Street, Perth, Western Australia 60002Australian Neuromuscular Research Institute, Queen Elizabeth II Medical CentreNedlands, Western Australia 6009, Australia Search for other works by this author on: Oxford Academic PubMed Google Scholar Jo-Ann L. Stanton, Jo-Ann L. Stanton 2Australian Neuromuscular Research Institute, Queen Elizabeth II Medical CentreNedlands, Western Australia 6009, Australia Search for other works by this author on: Oxford Academic PubMed Google Scholar Nigel G. Laing Nigel G. Laing 1Department of Neuropathology, Royal Perth HospitalWellington Street, Perth, Western Australia 60002Australian Neuromuscular Research Institute, Queen Elizabeth II Medical CentreNedlands, Western Australia 6009, Australia Search for other works by this author on: Oxford Academic PubMed Google Scholar Bioinformatics, Volume 10, Issue 2, 2 April 1994, Pages 209–210, https://doi.org/10.1093/bioinformatics/10.2.209 Published: 02 April 1994
Deep Learning Model for Dynamic Hand Gesture Recognition for Natural Human-Machine Interface on End Devices (2022)

As end devices have become ubiquitous in daily life, the use of natural human-machine interfaces has become an important topic. Many researchers have proposed the frameworks to improve the performance of dynamic hand gesture recognition. Some CNN models are widely used to increase the accuracy of dynamic hand gesture recognition. However, most CNN models are not suitable for end devices. This is because image frames are captured continuously and result in lower hand gesture recognition accuracy. In addition, the trained models need to be efficiently deployed on end devices. To solve the problems, the study proposes a dynamic hand gesture recognition framework on end devices. The authors provide a method (i.e., ModelOps) to deploy the trained model on end devices, by building an edge computing architecture using Kubernetes. The research provides developers with a real-time gesture recognition component. The experimental results show that the framework is suitable on end devices.
Cavity-enhanced localized plasmon resonance sensing (2010)

We present a method to enhance the sensing properties of a localized plasmon sensor. The concept is based on the combination of localized plasmons in nanostructures and a photonic microcavity. Metal nanorods that are placed at Bragg distance above a metal mirror form a Fabry–Pérot microcavity and constitute a coupled photonic-plasmonic system. The localized plasmon resonances of the nanorods and the phase shifts upon plasmon excitation are extremely sensitive to changes in the refractive index of the material surrounding the nanorods. Compared to the plasmonic nanorods alone, the coupled photonic-plasmonic system allows for a much more sensitive detection of small refractive index changes.
Estimation of speed of sound using medical ultrasound image deconvolution (2009)

In diagnostic ultrasound imaging the speed of sound is assumed to be 1540 m/s in soft tissues. When the actual speed is different, the mismatch can lead to distortions in the acquired images, and so reduce their clinical value. Therefore, the estimation of the true speed has been pursued not only because it enables image correction but also as a way of tissue characterisation. In this paper, we present a novel way to measure the average speed of sound concurrently with performing image enhancement by deconvolution. This simultaneous capability, based on a single acquisition of ultrasound data, has not been reported in previous publications. Our algorithm works by conducting non-blind deconvolution of an ultrasound image with point-spread functions based on different speeds of sound. Using a search strategy, we select the speed that produces the best-possible restoration. Deconvolution allows the use of ultrasound imaging machines almost without modification unlike most other estimation methods. A conventional handling of a transducer array is all that is required in the data acquisition part of our proposed method: the data can be collected freehand. We have tested our algorithm with simulations, in vitro phantoms with known and unknown speeds, and an in vivo scan. The estimation error was found to be +0.01 ± 0.60 % (mean ± standard deviation) for in vitro in-house phantoms whose speeds were also measured independently. In addition to the speed estimation, our method has also proved to be capable of simultaneously producing a better restoration of ultrasound images than deconvolution by an assumed speed of 1540 m/s, when this assumption is incorrect.
Propagation of hepatitis A virus in human embryo fibroblasts (1981)

human diploid fibroblasts and human primary liver cell carcinoma cells (PLC/PRF/5) were infected with hepatitis A virus (HAV) adapted to growth in cell culture or derived directly from human stool. Viral antigen was expressed in PLC/PRF/5 cells 28 days after infection with cell culture-adapted HAV, and 50 days after infection with virus from human stool. In human fibroblasts the periods until first expression of viral antigen were 90 and 210 days, respectively. During further passages of HAV in fibroblasts the time of first appearance of antigen decreased to about 28 days. Biophysical properties of HAV extracted from infected fibroblasts were comparable to those of HAV derived directly from human stool. Immunofluorescence studies showed that the antigen was located exclusively within the cytoplasm of the infected fibroblasts. Kinetics of antigen production indicated that an equilibrium between virus multiplication and cell metabolism was reached in persistently infected fibroblasts.
Submicron-Pore Characterization of Shale Gas Plays (2011)

Abstract Gas storage and flow behavior in the shale gas rocks are complex and hard to identify by conventional core analysis. This study integrates clustering analysis techniques from material science, petrophysics, and petrology to characterize North American shale gas samples from Utica, Haynesville, and Fayetteville shale gas plays. High pressure (up to 60,000 psi) mercury porosimetry analysis (MICP) determined the pore size distributions. A robust, detailed tomography procedure using a dual-beam (Scanning Electron Microscope and Focused Ion Beam, also called SEM-FIB) instrument successfully characterized the submicron-pore structures. SEM images revealed various types of porosities. Pores on a scale of nanometers were found in organic matter; they occupy 40–50% of the kerogen body. Two-hundred two-dimensional SEM images were collected and stacked to reconstruct the original pore structure in a three-dimensional model. The model provided insights into the petrophysical properties of shale gas, including pore size distribution, porosity, tortuosity, and anisotropy. This paper presents the pore model constructed from Fayetteville shale sample. The work used X-ray diffraction (XRD) to semi-quantify shale gas clay and non-clay minerals. The Haynesville and Utica (Indian Castle formation) shale samples have a high illite content. The Utica (Dolgeville formation) shale samples show high calcium carbonate (calcite) content. Moreover, wettability tests were performed on the shale samples, and the effect of various fracturing fluid additives on their wettability was tested. Most additives made the shale gas surfaces hydrophilic-like (water-wet).
Remote Controlling of Home Appliances using Mobile Telephony (2008)

In modern days, we must use various high-tech machineries and equipments to get our jobs done and make the life easier. These machineries should be controlled by the homeowner from any location as the homeowner might be away from home at workplace or traveling in a different place in the weekend. Thus a system of remote monitoring and controlling are very much necessary. Smart home is one of these types of system equipped with home appliances which we wish to control smartly from anywhere. Some products are commercially available which allow remote home appliance controlling through internet which is undoubtedly emerging. But it lacks the true sense of real mobility and security, making the remote home appliance controlling a limited term than it is supposed to be. In search of a true remote and adequately secure solution to be really effective and practicable, mobile telephony is better than any other solutions. Mobile phones have become almost an inseparable part of civil lives today. In this paper we introduce a new mechanism so that the ordinary services of the mobile phones can be leveraged to communicate with and control the home appliances and make our homes a really smart one. 1.
Performance requirements of the Mojette transform for internet distributed databases and image processing (2008)

In the last ten years there were intensive researches to find new methods for handling Internet distributed databases and image processing. One of these methods is the Mojette transform (MOT). This transform is an exact discrete Radon transform defined for a set of specific projections. The MOT is used mainly in image processing applications. There were several implementation using personal computers [8] and [9], but these application were implemented only for locally stored images. There are some applications where real time computing is a must, but the implementations before referred can not accomplish this requirement. The Mojette transforms implemented under different operating systems and for different processors presented below helps the performance analyses of the MOT and also let to conclude the need for reconfigurable hardware implementation. There is also analyzed the implementation of Mojette transform and inverse Mojette transform (IMOT) the implementation in field programmable gate arrays using reconfigurable platform. The paper tries to conclude the necessity for hardware implementation for real time processing. The paper outline the development work in order to create an embedded reconfigurable hardware based on FPGA board.
Affective Computing Applications in Distance Education (2013)

With the rapid development of network technology, the modern distance education has become an important trend in the development of international education. However, the spatial and temporal separation of the modern distance education so that learners cannot meet the exchange of feelings and emotional missing, which would affect students' cognitive learning and psychological health. Affective computing is about emotion, and the emotional generation, as well as effect of the emotional aspects, there is still a relatively new field of study. Affective computing technology in distance education can effectively solve the problem of lack of emotional exchange of students in distance learning. This paper introduces the concept of affective computing, research content, and affective computing applications in distance education.
Unique Hydraulic Lift System (1973)

This paper was prepared for the 48th Annual Fall Meeting of the Society of Petroleum Engineers of AIME, to be held in Las Vegas, Nev., Sept. 30-Oct. 3, 1973. Permission to copy is restricted to an abstract of not more than 300 words. Illustrations may not be copied. The abstract should contain conspicuous acknowledgement of where and by whom the paper is presented. Publication elsewhere after publication in the JOURNAL OF PETROLEUM TECHNOLOGY or the SOCIETY OF PETROLEUM ENGINEERS JOURNAL is usually granted upon request to the Editor of the appropriate journal provided agreement to give proper credit is made. Discussion of this paper is invited. Three copies of any discussion should be sent to the Society of Petroleum Engineers office. Such discussion may be presented at the above meeting and, with the paper, may be considered for publication in one of the two SPE magazines. Abstract Oil producing companies are continually seeking new ways to cut production costs through the production costs through the development of new ideas. This paper discusses a unique, economical hydraulic lift system installed by the Lafayette Division of Continental Oil Company. This system combines a new venturi, hydraulic bottom-hole pump and a compact, centrifugal power fluid cleaning system into a single installation. This jet eductor pump, or jet pump, is relatively unaffected by high gas-liquid ratio production or dirty power fluid and requires very little maintenance. The fluid cleaning system provides power fluid which meets the quality power fluid which meets the quality requirements of the jet pump for considerably less initial investment and lower operating costs than a conventional power fluid system. This combination is power fluid system. This combination is particularly adaptable to single well particularly adaptable to single well leases or fields. Currently, two of these compact systems are in operation producing sour crude from the deep Smackover formation in Mississippi. Excluding the problems corrected during an initial startup period, no system operating problems have been reported after a cumulative twenty-nine months of service. Introduction The Lafayette Division of Continental Oil Company has in operation two hydraulic lift installations which incorporate a new venturi hydraulic pump and a compact power fluid cleaning system, to be called "POCS" (power oil centrifugal separation) unit, into a unique system. To our knowledge, these were two of the first uses of this combination in the industry and the first installations designed specifically for use of a jet pump. The two single well systems were installed on wells in the deep Mississippi Smackover trend.
Nematode response to carbofuran. (1973)

Higher populations of Meloidogyne incognita larvae and Pratylenchus penetrans were recovered from soil treated with carbofuran 10 and 15 days after treatment, respectively, than were recovered from untreated control soil. The number of P. penetrans, however, was lower 50 days after treatment, and symptoms developed only occasionally on the root systems of host plants. Populations of Tylenchorhynchus claytoni inoculated at different distances from the base of corn seedlings growing in carbofuran-treated soil did not move toward the plant, whereas they were attracted in untreated soil from a distance of 12 cm. P. penetrans moved at random in treated agar medium when inoculations occurred 4 cm away from the root tips of tomato seedlings under aseptic conditions. Those nematodes that reached the roots were never observed feeding during a 20-day observation period. Specimens of P. penetrans placed on the developing roots moved at random and never penetrated. In contrast, numerous P. penetrans penetrated roots of seedlings growing in untreated medium.
Resonance transition radiation X-ray lasers (1991)

A free electron laser is proposed using a periodic dielectric and helical magnetic field. Periodic synchronism between the electrons and the optical wave is obtained at the period of the dielectric and not at the period of the helical magnetic field. The synchronism condition and the gain of the new device are derived. The effects on the gain of the new device are derived. The effects on the gain from dephasing and beam expansion due to elastic scattering of the electrons in the periodic medium are included in the gain calculation. Examples of the resonance transition radiation laser and klystron are given. Operation at photon energies between 2.5 and 3.5 keV with net gain up to 12% is feasible using high electron-beam energies of 3 and 5 GeV. Moderate (300-MeV) beam energy allows operation between 80 to 110 eV with up to 57% net gain using a klystron design. In both cases, rapid foil heating may limit operation to a single electron-beam pulse.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Effect of the Temperature on the Stoichiometry of Borane Dimethyl Sulfide Reduction of Secondary and Tertiary Amides (1991)

Abstract A simple procedure has been described for the reduction of secondary and tertiary amides to amines using borane-dimethyl sulfide in theoretical amounts.
Catalase protects tumor cells from apoptosis induction by intercellular ROS signaling. (2009)

Transformed cells are subject to intercellular induction of apoptosis by neighbouring nontransformed cells and to autocrine apoptotic self-destruction. Both processes depend on extracellular superoxide anion generation by the transformed cells and on the release of peroxidase from both nontransformed and transformed cells. This concerted action results in HOCl synthesis, HOCl-superoxide anion interaction and generation of apoptosis-inducing hydroxyl radicals. In contrast to transformed cells, ex vivo tumor cells are resistant against intercellular induction of apoptosis and autocrine apoptotic self-destruction. Resistance of tumor cells against intercellular ROS signaling depends on interference through catalase expression on the membrane. Intercellular ROS signaling of tumor cells can be restored when i) exogenous HOCl is added; ii) exogenous hydrogen peroxide is supplied, or iii) catalase is inhibited. These findings define the biochemical basis for specific apoptosis induction in tumor cells through re-establishment of intercellular ROS signaling, a potential novel approach in tumor prevention and therapy.
RetinaFace: Single-Shot Multi-Level Face Localisation in the Wild (2020)

Though tremendous strides have been made in uncontrolled face detection, accurate and efficient 2D face alignment and 3D face reconstruction in-the-wild remain an open challenge. In this paper, we present a novel single-shot, multi-level face localisation method, named RetinaFace, which unifies face box prediction, 2D facial landmark localisation and 3D vertices regression under one common target: point regression on the image plane. To fill the data gap, we manually annotated five facial landmarks on the WIDER FACE dataset and employed a semi-automatic annotation pipeline to generate 3D vertices for face images from the WIDER FACE, AFLW and FDDB datasets. Based on extra annotations, we propose a mutually beneficial regression target for 3D face reconstruction, that is predicting 3D vertices projected on the image plane constrained by a common 3D topology. The proposed 3D face reconstruction branch can be easily incorporated, without any optimisation difficulty, in parallel with the existing box and 2D landmark regression branches during joint training. Extensive experimental results show that RetinaFace can simultaneously achieve stable face detection, accurate 2D face alignment and robust 3D face reconstruction while being efficient through single-shot inference.
Dendritic calcium conductances generate high-frequency oscillation in thalamocortical neurons (1997)

Cortical-projecting thalamic neurons, in guinea pig brain slices, display high-frequency membrane potential oscillations (20-80 Hz), when their somata are depolarized beyond -45 mV. These oscillations, preferentially located at dendritic sites, are supported by the activation of P/Q type calcium channels, as opposed to the expected persistent sodium conductance responsible for such rhythmic behavior in other central neurons. Short hyperpolarizing pulses reset the phase and transiently increase the amplitude of these oscillations. This intrinsic thalamic electroresponsiveness may serve as a cellular-based temporal binding mechanism that sharpens the temporal coincidence of cortical-feedback synaptic inputs, known to distribute at remote dendritic sites on thalamic neurons.