gebhart/patrepeval huggingface dataset:
Automated 3-dimensional computed tomographic and fluoroscopic image registration (1998)

The registration of 3-dimensional (3-D) anatomical surfaces to sensor data such as intraoperative fluoroscopy is one of the basic problems in computer integrated surgery. The main objective is to find the relationship between 3-D preoperative computed tomographic images and a pair of intraoperative fluoroscopic images. Consequently, surgical navigation devices can use this relationship to provide improved surgical guidance. The proposed registration strategy presents a noninvasive anatomy-based (frameless) method for registration. In this article, we propose a cooperative approach between registration and contour segmentation on fluoroscopy. This approach is based on the duality between registration and segmentation in a model-based vision system. It associates a likelihood value to each pixel that corresponds to the probability that the pixel belongs to the contour of the object of interest. The registration is then achieved between backprojection lines stemming from likely contour pixels and the 3-D surface model of the object of interest. Then, in order to take into account the internal contour points extracted by the cooperative approach, we propose a new line to surface distance computation algorithm to be used during the data to model distance minimization step. Finally, we present the obtained results that demonstrate the validity of the proposed approach in carrying out accurate 3-D and 2-D registration.
A Generalized Steady-State Model for Bidirectional IPT Systems (2013)

Bidirectional inductive power transfer (BD-IPT) systems are high-order resonant circuits, which are complex in nature and sensitive to variations in system parameters and control variables. Consequently, modeling and design of BD-IPT systems are relatively difficult in comparison to unidirectional IPT systems. An accurate model that predicts the behavior of BD-IPT systems under different operating conditions is invaluable but yet to be reported. This paper, therefore, proposes a generalized steady-state model through which the behavior of BD-IPT systems can be accurately characterized. The proposed mathematical model is comprehensive and includes the effects of harmonics and sensitivity to variations in system parameters and control variables. Using the model, this paper investigates the behavior and sensitivity of BD-IPT systems under a range of practical operating conditions. The validity of the proposed generalized model, which is verified using the results of a 1-kW prototype system, provides a clear insight into BD-IPT systems and is expected to be useful at both design and implementation stages.
Intramolecular Charge‐Transfer Dynamics in Benzodifuran‐Based Triads (2021)

Abstract A facile and efficient approach for the synthesis of new conjugated donor‐π‐acceptor (D‐π‐A) chromophores has been developed, in which benzodifuran (BDF) and/or triphenyl amine (TPA) units are the donor moieties, linked by ethylenic bridges to electron‐deficient anthraquinone (AQ) and 11,11,12,12‐tetracyano‐9,10‐anthraquinodimethane (TCAQ) as the acceptor moieties. The resultant triads either with a symmetric A–D–A or an asymmetric D′–D–A structure show intense absorption bands in the visible spectral region due to efficient intramolecular charge transfer (ICT) from the HOMO localized on the BDF core to the LUMO localized on the AQ or the TCAQ unit. Electronic interactions between these redox‐active components were studied by a combination of cyclic voltammetry, spectroelectrochemistry, UV‐visible and ultrafast transient absorption spectroscopy. Analysis of the femtosecond excited‐state dynamics reveal that all triads undergo a rapid charge recombination process which occurs within a few picoseconds, indicating that ethylenic linkers can facilitate electron delocalization among BDF and AQ/TCAQ units and thus impart effective electronic interactions between them.
Binary Addressing Technique With Duty Cycle Control for LCDs (2005)

Introduction of duty cycle in the binary addressing technique is proposed to enable integration of liquid crystal display drivers with a digital system in a single chip. An analysis of this technique with duty-cycle control is presented. Effects of duty-cycle control on brightness uniformity of pixels in the liquid crystal display are discussed. A system on chip implementation of the technique is also demonstrated.
Full Scale Process Design for Energy Recovery from Swine Manure (2017)

The aim of this study is to investigate biogas reactor designs to recover energy from swine manure and utilize that energy for a small scale pig farm in Norway. Continuous stirred tank reactor (CSTR) and upflow anaerobic sludge blanket (UASB) reactor were the design alternatives investigated. Simulations were based on the anaerobic digestion model no.1(ADM1) implemented in Aquasim software.&#x0D; The model was calibrated based on a series of laboratory batch reactors. The batch reactor with the highest biogas yield was first simulated to obtain the organic matter concentration in the feed manure. The resulting calibrated model was used to simulate CSTR and UASB reactors for a manure feed flow rate of 2m3/day. Different CSTR volumes in the range of 10- 60 m3 and UASB volumes in the range of 2-20 m3 were assessed using simulations. At low reactor volumes overloaded conditions were observed. Maximum energy production of 128 kWh/day at a biogas production rate of ~20 m3/day (68-71 % methane content in the biogas) was simulated for the reactor volumes for CSTR and UASB of 30m3 and 2.5m3, respectively. An efficient biogas production (e.g. to cover farm energy needs) can be obtained from a UASB reactor that can be constructed and installed at a reasonable cost.
[Expression of anti-avian influenza virus H5N1 secretory IgA in Chinese hamster ovary cells]. (2011)

Secretory IgA (SIgA) antibodies in external secretions play an important role in mucosal immune response. Polymeric SIgA was advantageous over monomeric IgA (mIgA) and IgG in several aspects. To express secretory IgA antibody against H5N1 virus, we constructed the secretory component and immunoglobulin J expressing plasmids and co-transfected the plasmids into the Chinese hamster ovary cells (CHO) stably expressing immunoglobulin A. Then we used Zeocin to select the positive clone cells, monoclonal cells stably secreting SIgA was screened through fold dilution method at last. The SIgA antibody secreted from the CHO cells was confirmed by Western blotting, which demonstrated that we had got the complete SIgA molecular. The successful expression of this polymeric anti-H5N1 SIgA in CHO cells will contribute to the production of recombinant SIgA as a preventive agent for infectious disease control.
Gyrocardiography: A new non-invasive approach in the study of mechanical motions of the heart. Concept, method and initial observations (2016)

The pumping action of the heart is performed by contraction of the myocardium fibers. We present a non-invasive technique named gyrocardiography (GCG) that comprises a sensor of angular motion, gyroscope, configured to obtain three-dimensional angular velocity signals. A tri-axial micro electromechanical (MEMS) gyroscope sensor was attached to the surface of the chest to obtain gyrocardiogram. Color-coded Doppler tissue imaging (DTI) was recorded simultaneously and synchronized with the GCG in an off-line analysis. By placing a region of interest longitudinally around the myocardium in DTI allowed us to investigate whether GCG can provide information indicative of the tissue velocity and relative strain rate of the myocardium. Experimental observations by simultaneously recorded GCG and color DTI suggests that a gyroscope sensor attached to the chest is indeed capable to monitor the myocardial deformation during the cardiac cycle and therefore can provide a gateway to clinically relevant information.
Pathogenicity Tests on Nine Mosquito Species and Several Non-target Organisms with Strelkovimermis spiculatus (Nemata Mermithidae). (1998)

Nine species of mosquitoes and several species of non-target aquatic organisms were tested for susceptibility to the mernaithid nematode, Strelkovimermis spiculatus. All species of Anopheles, Aedes, Culex, and Toxorhynchites exposed to S. spiculatus were susceptible. Of the nine mosquito species tested, C. pipiens quinquefasciatus had the greatest tolerance to initial invasion and the highest percent infection of those that survived. High levels of infection were also achieved with Aedes taeniorhynchus and A. albopictus, but these mosquitoes were significantly less tolerant to parasitism than C. pipiens quinquefasciatus. Strelkovimermis spiculatus did not infect or develop in any of the non-target hosts tested.
Highly coherent, in-phase-mode operation of 20-element resonant arrays of antiguides (1990)

Twenty-element resonant-optical-waveguide (ROW) arrays are discussed. Fringe-visibility measurements, performed on in-phase-operating devices, reveal high coherent ( gamma >0.86) across the whole array structure. The devices maintain diffraction-limited beams to 2.8*threshold. Uniform near-field intensity profiles confirm that the arrays are operating close to the resonant coupling condition and thus are fully coupled.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
ChemInform Abstract: Chemoenzymatic Synthesis of Sialosides and Their Applications (2009)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Radiation from seismic sources in cased and cemented boreholes (1994)

Abstract Far-field, stationary phase approximations are often used to study the radiation of P- and S-waves from seismic sources located in boreholes, usually with an assumption of low frequency and in application to uncased boreholes. These two assumptions allow explicit analytical results for the radiation patterns to be derived, as boundary condition equations can be solved analytically in fairly simple forms. Applying the same methodology to cased and cemented boreholes, however, is much more difficult because of the increased number of simultaneous boundary condition equations. I circumvent this difficulty by solving the boundary condition equations numerically using propagator matrices, as is generally done in the calculation of synthetic full-waveform acoustic logs. In this way, the assumption of low frequency is also avoided, and a generalized stationary-phase solution for sources in general, concentrically layered borehole models is easily obtained.Computation of the radiation patterns for cased and uncased boreholes in various formations shows that the amplitude reduction, because of the introduction of casing, is a function of both source type and of formation velocities. Axial stress sources are less affected by the casing than either radial stress or volume-injection sources, and as formation velocity decreases, the effect of the casing becomes more significant as the impedance contrast between steel and the formation becomes larger. The new generalized stationary-phase solution also shows that as frequency approaches 1000 Hz, the results obtained by low-frequency approximations for stress sources can be inaccurate and that the energy radiated from the source becomes more highly directed in the horizontal directions. The radiation pattern begins to change relatively rapidly as a function of frequency, so that the resulting observations from broad-band sources will show changes in waveforms that mimic the effects of attenuation. These changes occur because the length of the source becomes important as wavelength decreases, demonstrating the need to consider the influence of frequency, as well as casing and cement, on source radiation.
Mechanisms of Heteroresistance to Isoniazid and Rifampin of M. tuberculosis in Tashkent, Uzbekistan (2009)

Heteroresistance of Mycobacterium tuberculosis is defined as the co-existence of organisms either susceptible or resistant to an anti-tuberculosis drug in one patient. Here, we analyzed the underlying mechanisms of heteroresistance to INH and RMP in 35 tuberculosis (TB) patients from Tashkent, Uzbekistan, using the Genotype MTBDR assay. The MTBDR assay is designed to detect wild-type and mutations of the 81-bp hotspot region of the rpoB gene and of codon 315 of the katG gene conferring resistance to rifampin (RMP) and isoniazid (INH), respectively. In seven of the 35 cases (20%), wild-type and resistant organisms were simultaneously detected, indicating heteroresistance. Using MIRU-VNTR analysis and IS6110 fingerprinting showed that in five of the seven cases, heteroresistance was caused by two different strains. In two cases, heteroresistance was due to infection with a single M. tuberculosis strain of the Beijing genotype split into organisms with and without resistance to a drug. These latter cases showed a history of relapse/treatment failure suggesting that poor treatment quality might have triggered the evolution of heteroresistance. For the first time, two different mechanisms of heteroresistance have been proven in one study set, the existence of two different strains suggesting super-infection, and the split of a MTB strain into resistant and susceptible lineages in the context of relapse or treatment failure and of an infection with Beijing genotype strains. Particularly, the detection of the latter mechanism might serve as quality marker for treatment progams in the future. The implications of these findings for clinical infection control practitioners as well as for pneumologists involved in TB control programs will be discussed in detail.
Reducing Constraints on Quantum Computer Design by Encoded Selective Recoupling (2001)

The requirement of performing both single-qubit and two-qubit operations in the implementation of universal quantum logic often leads to very demanding constraints on quantum computer design. We show here how to eliminate the need for single-qubit operations in a large subset of quantum computer proposals: those governed by isotropic and XXZ, XY-type anisotropic exchange interactions. Our method employs an encoding of one logical qubit into two physical qubits, while logic operations are performed using an analogue of the NMR selective recoupling method.
Connexin 26 Expression in Human and Ferret Airways and Lung During Development (1998)

Coordinated microscopic and molecular biological studies were used to document gap junction expression during postnatal development in ferret tracheal epithelium and lung and in fetal and adult human airway and lung. Expression of connexin 26 (Cx26) in the ferret airways was limited to the epithelial layer and was observed only during the newborn interval. In contrast, we found Cx26 expressed in the alveolar epithelium of the ferret lung by in situ hybridization, Northern blotting, RT-PCR amplification, and immunocytochemical labeling at all ages examined. This finding was further confirmed by documentation of gap junctional plaques upon ultrastructural examination of freeze-fracture replicas of adult ferret lung tissue. Parallel studies of developing human fetal lung and airway suggested connexin expression in the airways only in the first trimester but, as in the ferret, persistent expression was observed in both fetal and adult lung. These studies suggest that the transient expression of Cx26 is a reliable early indicator of airway epithelial development and differentiation in the airways. In contrast, Cx26 expression persists throughout life in the lung, suggesting that gap junctions serve more perennial intercellular communication functions in the peripheral lung.
Acute B lymphoblastic leukaemia‐propagating cells are present at high frequency in diverse lymphoblast populations (2012)

Leukaemia-propagating cells are more frequent in high-risk acute B lymphoblastic leukaemia than in many malignancies that follow a hierarchical cancer stem cell model. It is unclear whether this characteristic can be more universally applied to patients from non-'high-risk' sub-groups and across a broad range of cellular immunophenotypes. Here, we demonstrate in a wide range of primary patient samples and patient samples previously passaged through mice that leukaemia-propagating cells are found in all populations defined by high or low expression of the lymphoid differentiation markers CD10, CD20 or CD34. The frequency of leukaemia-propagating cells and their engraftment kinetics do not differ between these populations. Transcriptomic analysis of CD34(high) and CD34(low) blasts establishes their difference and their similarity to comparable normal progenitors at different stages of B-cell development. However, consistent with the functional similarity of these populations, expression signatures characteristic of leukaemia propagating cells in acute myeloid leukaemia fail to distinguish between the different populations. Together, these findings suggest that there is no stem cell hierarchy in acute B lymphoblastic leukaemia.
A new low dielectric material with high thermostability based on a thermosetting trifluoromethyl substituted aromatic molecule (2013)

A thermally cross-linkable molecule composed of bis(trifluoromethyl)benzene and benzocyclobutene units (F1) was successfully prepared. Heating F1 (>200 °C) gave a cured resin, which showed a dielectric constant (k) of 2.47 at 30 MHz and an average k value of less than 2.51 in a range of frequencies from 0.15 MHz to 30 MHz. Such low k values are comparable to other polymeric low-k materials. For comparison, a perfluorobenzene with benzocyclobutene groups (F2) was also synthesized. The cured F2 exhibited an average k value of 2.98, indicating that the introduction of a trifluoromethyl group into the backbone of the molecules can efficiently decrease the dielectric constant of the molecules. The cured F1 also exhibited high thermostability (T5 = 429 °C, weight residual = 47.7% at 1000 °C under N2). These results suggest that F1 is suitable for the utilization in ultra large scale integration circuits.
Design of high-speed circuits for optical communication systems (2002)

This paper presents the design of circuits and architectures for optical communication transceivers. First, a system overview illustrating the challenges in high-speed implementations is given. Next, the design of transimpedance amplifiers and limiters is discussed and the problem of clock and data recovery is addressed. Finally, jitter issues and methods of estimating the jitter are introduced.
Ultra low-k integration solutions using GCIB processing (2004)

Integration of porous low-k materials for interconnect technology at the 45nm node presents many challenges to etch, ash and cleans processes. Dry processing with a gas cluster ion beam (GCIB) employs a highly energetic beam of loosely bound atomic or molecular clusters. We will show the ability of GCIB to pore seal, etch and ash p-MSQ features, while minimizing low-k film damage as compared to traditional plasma processes.
Circulating Luteinizing Hormone Pulse Frequency in Women with Polycystic Ovary Syndrome (1988)

Department of Reproductive Medicine, School of Medicine (T-002), and General Clinical Research Center, University of California, San Diego, La Jolla, California J. Clin. Endocrinol. Metab. 65: 233, 1987
Low Phase Noise Oscillator at 60 GHz Stabilized by a Substrate Integrated Cavity Resonator in LTCC (2014)

In this letter, we report a low phase noise oscillator exhibiting state-of-the-art phase noise characteristics at 60 GHz. The oscillator is stabilized by an off-chip substrate integrated waveguide (SIW) cavity resonator, manufactured in LTCC technology. The area on top of the cavity resonator is used to flip-chip mount the MMIC, realized in SiGe technology. Measured oscillators discussed in this paper operate at frequencies of 59.91, 59.97, and 59.98 GHz. The measured phase noise at 1 MHz offset is -115.76 dBc/Hz, -115.92 dBc/Hz and -116.41 dBc/Hz, respectively. To our knowledge, the present hybrid oscillator has the lowest phase noise and highest figure of merit of integrated oscillators at V-band. The simulations are in very good agreement with the measured oscillation frequencies.
Clinical Evaluation of the Cartridge-Based GeneXpert Human Papillomavirus Assay in Women Referred for Colposcopy (2014)

High-risk human papillomavirus (hrHPV) testing is now being introduced as a potential primary screening test for improved detection of cervical precancer and cancer. Current U.S. Food and Drug Administration-approved tests are batch tests that take several hours to complete. A rapid, non-batch test might permit point-of-care (POC) testing, which can facilitate same-day screen and management strategies. For a non-batch, random-access platform (GeneXpert; Cepheid, Sunnyvale, CA), a prototype hrHPV assay (Xpert) has been developed where testing for 14 hrHPV types can be completed in 1 h. In the first clinical evaluation, Xpert was compared to two validated hrHPV tests, the cobas HPV test (cobas, Roche Molecular Systems) and Hybrid Capture 2 (hc2, Qiagen), and to histologic outcomes using specimens from colposcopy referral populations at 7 clinical sites in the United States (n = 697). The sensitivity of Xpert for cervical intraepithelial neoplasia grade 2 or more severe diagnoses (CIN2+) (n = 141) was equal to that of cobas (90.8% versus 90.8%, P = 1) and greater than that of hc2 (90.8% versus 81.6%, P = 0.004). Xpert was more specific than cobas (42.6% versus 39.6%, P = 0.02) and less specific than hc2 (42.6% versus 47.7%, P < 0.001). Similar results were observed for cervical intraepithelial neoplasia grade 3 or higher (CIN3+) (n = 91). HPV16 detection by Xpert identified 41.8% of the CIN2+ specimens with a positive predictive value (PPV) of 54.6%. By comparison, HPV16 detection by cobas identified 42.6% of the CIN2+ specimens with a PPV of 55.0%. hrHPV detection by the Xpert demonstrated excellent clinical performance for identifying women with CIN2+ and CIN3+ that was comparable to that of currently available clinically validated tests.
E. R. Krueger (1971)

article Free Access Share on E. R. Krueger Author: E. R. Krueger University of Colorado University of ColoradoView Profile Authors Info & Claims ACM SIGUCCS NewsletterVolume 1Issue 1-71January 1971 pp 11–13https://doi.org/10.1145/1279581.1279584Online:06 January 1971Publication History 0citation24DownloadsMetricsTotal Citations0Total Downloads24Last 12 Months0Last 6 weeks0 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
Systemic vitamin D supplementation and local bone formation after maxillary sinus augmentation – a randomized, double‐blind, placebo‐controlled clinical investigation (2015)

Vitamin D3+ calcium supplementation improves serum vitamin D levels and potentially impacts local bone remodeling on a cellular level. However, no statistically significant difference in bone formation or graft resorption was detected between groups.