gebhart/patrepeval huggingface dataset:
Dynamic real-time calibration for antenna matching in the transmission mode (2010)

In this paper we introduce an effective approach for dynamic impedance tuning of antennas in the transmission mode. The proposed approach is based on an optimization process that solves a system of two non-linear equations. It takes place in real-time and computes the actual input impedance of an antenna that changes in reaction to its environment. Our proposed approach does not limit the number of tunable components as the computational overhead is independent of their cardinality. Hence the proposed approach is efficiently applied for broadband antenna tuning.
Monotherapy with the vitamin D3 analogue MC1288 does not result in prolonged kidney allograft survival in rhesus monkeys (2006)

The active form of vitamin D3, 1,25(OH)2D3, has pronounced immunoregulatory properties and is a potential treatment of immune-based disorders. However, the central role of this hormone in calcium and bone metabolism complicates its long-term use as an immunomodulator. Some newly developed vitamin D3-derived analogues, such as MC1288, have an improved immunoregulatory potential and prolong allograft survival in rodent models. Such compounds might be a valuable component of immunosuppressive treatment regimen in transplantation and autoimmunity. The rhesus monkey provides a useful model for the preclinical validation of new therapeutic strategies for transplantation. The present study shows that MC1288 inhibits both proliferation and interferon-gamma production by rhesus peripheral blood mononuclear cells in a mixed lymphocyte reaction. We have tested the maximum tolerated dose of MC1288 in a rhesus monkey model of kidney transplantation. The observed effects on serum calcium and parathyroid hormone confirm the in vivo activity of MC1288. However, as a monotherapy, MC1288 did not cause prolongation of the kidney allograft survival in rhesus monkeys.
Stochastic Self-Consistent Second-Order Green’s Function Method for Correlation Energies of Large Electronic Systems (2017)

The second-order Matsubara Green's function method (GF2) is a robust temperature-dependent quantum chemistry approach, extending beyond the random-phase approximation. However, until now the scope of GF2 applications was quite limited as they require computer resources that rise steeply with system size. In each step of the self-consistent GF2 calculation there are two parts: estimating of the self-energy from the previous step's Green's function and updating the Green's function from the self-energy. The first part formally scales as the fifth power of the system size, while the second has a much gentler cubic scaling. Here, we develop a stochastic approach to GF2 (sGF2), which reduces the fifth power scaling of the first step to merely quadratic, leaving the overall sGF2 scaling as cubic. We apply the method to linear hydrogen chains with up to 1000 electrons, showing that the approach is numerically stable, efficient, and accurate. The stochastic errors are very small, on the order of 0.1% or less of the correlation energy for large systems, with only a moderate computational effort. The first iteration of GF2 is an MP2 calculation that is done in linear scaling; hence we obtain an extremely fast stochastic MP2 (sMP2) method as a byproduct. While here we consider finite systems with large band gaps where at low temperatures effects are negligible, the sGF2 formalism is temperature dependent and general and can be applied to finite or periodic systems with small gaps at finite temperatures.
Visually Maintained Image Disturbance Against Deepfake Face Swapping (2021)

As a deep learning-based application, DeepFake can generate malicious images or videos through replacing the face of a source image with the target face, which poses a significant threat to social media. In this paper, we propose a scheme to prevent such tampering by exploring adversarial examples against DeepFake. Specifically, adversarial examples are produced by adding tailored distortion to source images. The added distortion is imperceptible to human vision but can mislead the generation of face-swapped images effectively. We present three novel adversarial attacks against DeepFake autoencoders from perspectives of adversarial transferability and latent representation. Our first method synthesizes universal perturbation, which is image-agnostic. By contrast, the latter two methods directly perform the preciser perturbation specific to a source image. Extensive experiments demonstrate the effectiveness of our adversarial examples against DeepFake in terms of both reference and non-reference image quality assessment.
Efficient high‐frequency body coil for high‐field MRI (2004)

The use of body coils is favored for homogeneous excitation, and such coils are often paired with surface coils or arrays for sensitive reception in many MRI applications. While the body coil's physical size and resultant electrical length make this circuit difficult to design for any field strength, recent efforts to build efficient body coils for applications at 3T and above have been especially challenging. To meet this challenge, we developed an efficient new transverse electromagnetic (TEM) body coil and demonstrated its use in human studies at field strengths up to 4 T. Head, body, and breast images were acquired within peak power constraints of <8 kW. Bench studies indicate that these body coils are feasible to 8 T. RF shimming was used to remove a high-field-related cardiac imaging artifact in these preliminary studies. P41RR13230
A modified high-temperature cell (up to 3300 K) for use with a cubic press (1996)

A high temperature-high pressure pyrophyllite cell with a graphite heater has limitations when temperature exceeds ∼2100 K. A conventional cell used with the cubic anvil high pressure apparatus has been modified to reach ∼3300 K. The heater power versus temperature calibration curve has been established using Pt–Pt10%Rh thermocouple up to 1900 K. For calibration above 1900 K, the heater powers required to initiate melting in Al2O3, Y2O3, and TiB2, and decomposition of α-SiC have been determined. The melting (or decomposition) of the specimens has been detected by examining the microstructure of the specimens recovered after pressure-temperature treatment.
Technologies of Image Guidance and the Development of Advanced Linear Accelerator Systems for Radiotherapy (2011)

As advanced radiotherapy approaches for targeting the tumor and sparing the normal tissues have been developed, the image guidance of therapy has become essential to directing and confirming treatment accuracy. To approach these goals, image guidance devices now include kV on-board imagers, kV/MV cone-beam CT systems, CT-on-rails, and mobile and in-room radiographic/fluoroscopic systems. Nonionizing sources, such as ultrasound and optical systems, and electromagnetic devices have been introduced to monitor or track the patient and/or tumor positions during treatment. In addition, devices have been designed specifically for monitoring and/or controlling respiratory motion. Optimally, image-guided radiation therapy systems should possess 3 essential elements: (1) 3D imaging of soft tissues and tumors, (2) efficient acquisition and comparison of the 3D images, and (3) an efficacious process for clinically meaningful intervention. Understanding and using these tools effectively is central to current radiotherapy practice. The implementation and integration of these devices continue to carry practical challenges, which emphasize the need for further development of the technologies and their clinical applications.
Biomarkers for breast cancer: The search continues (2010)

Commentary to:Reevaluating Cathepsin D as a biomarker for breast cancer: Serum activity levels versus histopathologyDaniel E Abbott, Naira V Margaryan, Jacqueline Jeruss, Seema Khan, Virginia Kaklamani, David J Winchester, Nora Hansen, Alfred Rademaker, Zhila Khalkhali-Ellis and Mary J.C. Hendrix
Efficient coupled transcription and mRNA splicing in vitro using plasmids derived from early region 3 of adenovirus 2 and a nondefective adenovirus-simian virus 40 hybrid. (1984)

Accurate and highly efficient (80%) splicing of a single mRNA precursor to processed products was achieved using HeLa cell extracts to synthesize and process RNA in vitro from recombinant plasmids containing specific DNA segments from adenovirus 2 (Ad2) and the nondefective adenovirus-simian virus 40 (Ad+2ND1) hybrid. One plasmid, pRID, contains a segment of Ad2 DNA spanning chromosome map coordinates 75.9-83.4. The other plasmid, pRW9, contains the analogous viral region from Ad+2ND1. RNA synthesis from pRID in vitro occurs for more than 60 min and is directed by RNA polymerase II. RNA products consistent in size with the expected precursor and the two processed mRNAs are made. RNA blot hybridization analyses showed that these products are complementary to the Ad2 insert in the plasmid and that the appropriate intervening sequence was absent from the smallest processed mRNA. Comparison of the splice patterns of RNA made in vitro to those of RNAs taken from infected cells using the nuclease S1 technique demonstrated the accuracy of intron removal.
An automatic technique for finding and localizing externally attached markers in CT and MR volume images of the head (1996)

An image processing technique is presented for finding and localizing the centroids of cylindrical markers externally attached to the human head in computed tomography (CT) and magnetic resonance (MR) image volumes. The centroids can be used as control points for image registration. The technique, which is fast, automatic, and knowledge-based, has two major steps. First, it searches the entire image volume to find one voxel inside each marker-like object. We call this voxel a "candidate" voxel, and we call the object a candidate marker. Second, it classifies the voxels in a region surrounding the candidate voxel as marker or nonmarker voxels using knowledge-based rules and calculates an intensity-weighted centroid for each true marker. We call this final centroid the "fiducial" point of the marker. The technique was developed on 42 scans of six patients-one CT and six MR scans per patient. There are four markers attached to each patient for a total of 168 marker images. For the CT images the false marker rate was zero. For MR the false marker rate was 1.4% (Two out of 144 markers). To evaluate the accuracy of the fiducial points, CT-MR registration was performed after correcting the MR images for geometrical distortion. The fiducial registration accuracy averaged 0.4 mm and was better than 0.6 mm for each of the eighteen image pairs.
Growth of an Ethane‐utilizing Mixed Culture in a Chemostat (1980)

Bacteria capable of utilizing ethane as their sole source of carbon and energy at 42° were readily isolated from soil samples obtained from Brunei with batch culture enrichment techniques. No ethane utilizers capable of growth at 42° were isolated, however, from soil samples obtained from Britain. An ethane‐utilizing mixed culture was grown under ammonia limitation in chemostat culture. The lipid content of the culture was inversely proportional to the dilution rate. Similarly, the amount of organic carbon excreted into the culture supernatant was inversely proportional to the growth rate and could be accounted for mainly as carbohydrate. The specific rates of ethane and oxygen consumption, carbon dioxide production and yield from ethane were directly proportional to the dilution rate.
Ammonia Detection at Low Temperature by Tungsten Oxide Nanowires (2018)

Ammonia detection at low temperatures below 150 &amp;deg;C is attractive to be well suited for flexible substrates in terms of thermal strain and to specific environment not allowing high temperature such as explosive one. In commercial gas sensors, tungsten trioxide is the mostly used semiconducting metal oxide after tin dioxide. We report herein the efficiency of tungsten trioxide nanowires deposited on rigid substrate by drop coating from colloidal solution. This study provides an interesting approach to fabricate ammonia sensors on conformable substrate with significant properties for applications in environmental monitoring devices.
Ultrasonic Doppler device for measurement of time-dependent and space-dependent flow speed (2003)

An effort is made to determine, at each instant, the direction and the magnitude of the velocity of a flow-carried target, provided this target moves within the field monitored by the measuring device. Four transducers (one transmitter and three receivers) are used because the Doppler phenomenon is three-dimensional in the present case. The interaction between the incident ultrasonic wave and the scattering target is modeled by means of a complex envelope. Targets in the form of bubbles injected in the flow are tracked experimentally for a duration of 1 s as they move along a three-dimensional trajectory. This trajectory is reconstructed from velocity results. The proposed 3-D ultrasonic Doppler velocimeter measures the velocity vector and allows reconstruction of the trajectory for targets of 10- mu m minimum size, included in a measurement field of some cubic centimeters, with maximum velocity of some meters per second.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
A Novel Positioning-Communication Integrated Signal in Wireless Communication Systems (2019)

We propose a novel positioning-communication integrated signal, which superposes the configurable positioning signal on the communication one to achieve a sub-meter range measurement accuracy. Different from other positioning schemes, there are multi positioning signals on different sub-carriers for different positioning users. The powers and bandwidths of these positioning signals are controllable, which reduces the near-far effect, and improves the range measurement accuracy. Other major contributions are: we analyze the interference of the positioning signal to the communication one; we give the lower-bound and measurement accuracy of the range estimation in both flat and fading channels, and derive their simple expressions. The results show the interaction between the communication and positioning signals is limited, and it is feasible to use the proposed signal for high accuracy positioning.
Metabolism of biphenyl. Structure and physicochemical properties of 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid, the meta-cleavage product from 2,3-dihydroxybiphenyl by Pseudomonas putida (1974)

The structure of 2-hydroxy-6-oxo-6-phenylhexa-2,4-dienoic acid for the meta-cleavage product of 2,3-dihydroxybiphenyl by a Pseudomonas putida strain was demonstrated on the basis of its chemical and physicochemical properties and those of its derivatives.
Electrochemical Nucleation and Growth of Copper on Resistive Substrates (2008)

We have studied electrochemical nucleation and growth of copper on ruthenium and ruthenium-based substrates using galvanostatic methods. We show that potential-time transients recorded during galvanostatic deposition of Cu on Ru can be used to study the effects of additives, deposition parameters, and substrate pre-treatment on Cu island density, and help determine experimental parameters needed to facilitate high island densities and quick sweep of a Cu film front across the resistive substrates.
24-Hour Profile of Plasma Norepinephrine in Affective Disorders (1986)

The circadian rhythm of plasma norepinephrine (NE) was investigated in the depressed (major affective disorder, DSM III; n = 12), recovered (after 3 weeks of treatment using usual antidepressant drugs; n = 12) and normal (volunteers, age and sex matched; n = 10) states. Data analysis (based on the evaluation of circadian parameters, on the chronogram method and on the chronobiological analysis) revealed a clear NE circadian rhythm in normal subjects, a rhythm which was disturbed in depression, with amplitude reduction and abnormal phase position. These abnormalities tended to disappear during recovery since circadian parameters were similar to those of controls. These circadian abnormalities could be linked to the impairment of the peripheral and central catecholaminergic systems. They may also support the chronobiological hypothesis of affective disorders.
Sandwich Plates Actuated by a Kagome Planar Truss (2004)

Kagome truss plates have properties that suggest they should be uniquely effective as an actuation plane for sandwich plates: a Kagome truss plate has in-plane isotropy, optimal stiffness and strength, and its truss members can be actuated with minimal internal resistance. In this paper, sandwich plates are studied that are comprised of one solid face sheet and one actuated Kagome face sheet joined by a pyramidal truss core. Various aspects of the actuation behavior of these plates are investigated, including internal resistance and strains resulting from actuation and efficiency of actuation. Single and double curvature actuation modes are investigated. Contact is made with analytic results for actuation modes with long wavelength.
Esau's Plant Anatomy (2006)

Esau's Plant anatomy , Esau's Plant anatomy , کتابخانه دیجیتالی دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی
Supplementary Figure 1 from RANK Induces Epithelial–Mesenchymal Transition and Stemness in Human Mammary Epithelial Cells and Promotes Tumorigenesis and Metastasis (2023)

&lt;p&gt;PDF file - 91K, RANK is expressed and active in MCF10A cells&lt;/p&gt;
Results of the Centralia underground coal gasification field test (1985)

The Centralia Partial-Seam CRIP (controlled retracting injection point) test is described which herein is the second test conducted at this site. The first test was done in the fall and winter of 1981-82 when the Large Block (LBK) tests were successfully completed at the Centralia, Washington site. Three distinct periods of gasification were observed. The initial period in which the vertical production well was in use which yielded a typical dry gas heating value of 219 kJ/mol (248 Btu/scf). This period was followed by a period of considerably higher gas quality, 261 kJ/mol (296 Btu/scf), which resulted from the switch to the slant production well and the CRIP maneuver. The final period began when a large-scale underground roof fall occurred and the typical dry gas heating value fell to 194 kJ/mol (220 Btu/scf).
Determination of the absolute configurations at stereogenic centers in the presence of axial chirality (2009)

Cephalochromin, a homodimeric naphthpyranone natural product, contains both axial chirality due to the hindered rotation along the biaryl axis and central chirality due to the C-2, C-2' stereogenic centers of the fused pyranone ring. For determining the absolute configurations (ACs) of central chirality elements, different chiroptical spectroscopic methods, namely vibrational circular dichroism (VCD), electronic circular dichroism (ECD), and optical rotation (OR), have been used. From these experimental data, in conjunction with corresponding quantum chemical predictions at B3LYP/6-311G* level, it is found that the ECD spectra of cephalochromin are dominated by its axial chirality and are not suitable to distinguish the (aS,2S,2'S) and (aS,2R,2'R) diastereomers and hence to determine the ACs of the central chirality elements. OR signs also did not distinguish the (aS,2S,2'S) and (aS,2R,2'R) diastereomers. On other hand, VCD spectrum of cephalochromin exhibited separate spectral features attributable to axial chirality and stereogenic centers, thereby allowing the determination of both types of chirality elements. This is the first investigation demonstrating that, because of vibrations specific to the studied stereogenic centers, VCD spectroscopy can be used to simultaneously determine the ACs of axial and central chirality elements whenever other chiroptical methods (ECD and OR) fail to report on them.
IT EDUCATION IN TAIWAN: RELATIONSHIP BETWEEN SELF-EFFICACY AND ACADEMIC INTEGRATION AMONG STUDENTS (2009)

This study examined the relationship between academic integration and self-efficacy with regard to institution types and students’ majors among IM (Information Management) and CS (Computer Science) students. A Taiwanese National survey database was used to achieve the research objective. MANOVA was used to analyze the interaction effects between academic integration and self-efficacy. The independent variables were institution types and students’ majors. The results showed that students of public institutions have higher levels of self-efficacy than students of private ones. Another finding is that IM students seem to have better study strategies and habits than CS students while CS students were found to have better collaboration and satisfaction with their institutions than IM students. Counselling services and team projects are suggested to enhance students levels of academic integration and self-efficacy.
PEDOT:PSS with embedded TiO2 nanoparticles as light trapping electrode for organic photovoltaics (2016)

The performance of organic optoelectronic devices can be improved by employing a suitable optical cavity design beyond the standard plane layer approach, e.g., by the inclusion of periodically or randomly textured structures which increase light incoupling or extraction. One of the simplest approaches is to add an additional layer containing light scattering particles into the device stack. Solution processed poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin films are promising for replacing the brittle and expensive indium tin oxide transparent electrode. We use a blend of 100 nm TiO2 scattering particles in PEDOT:PSS solution to fabricate transparent electrode films which also functions as a scattering layer. When utilized in an organic photovoltaic device, a power conversion efficiency of 7.92% is achieved, which is an 8.6% relative improvement compared to a device with a neat PEDOT:PSS electrode without the nanoparticles. This improvement is caused by an increase in short-circuit current due to an improved photon harvesting in the 320 nm–700 nm spectral wavelength range.