gebhart/patrepeval huggingface dataset:
Natural Killer (NK) Cells from Killers to Regulators: Distinct Features Between Peripheral Blood and Decidual NK Cells (2007)

Natural killer (NK) cells are a key component of innate immunity, particularly crucial during the early phase of immune responses against certain viruses, parasites, and microbial pathogens. The role of NK cell during pregnancy has been vividly discussed over the past years and it is now becoming increasingly clear that NK cells control pregnancy maintenance at several levels. In normal pregnancy, it appears that they provide benefit by properly secreting cytokines, chemokines and angiogenic factors rather than functioning as cytotoxic effector cells. However, as they are endowed with all the cytolytic weapons, they promptly become capable of attacking fetal and maternal tissues during infection and inflammation.
LAS INSTITUCIONES DE EDUCACIÓN SUPERIOR Y SU EVALUACIÓN (2013)

The interest of the undersigned to address the issue presented here arises from the need to know the perception of teachers in terms of three dimensions: quality, academic culture and competency model. This arises from the problems raised in the Bachelor in Sciences of Communication from the University of Sonora in Mexico with the implementation of the new educational model based on competencies in the author's affiliation place and discipline that distinguishes their training. The methodological process undertaken during the development of this research is contextualized and exposed from a description and reflection of the origin of the problem concerning quality and academic culture in relation to the Competency Based Educational Model. This is analyzed from the perspective of teachers, quality and academic culture of this educational model and the conditions required for the competency model as a new educational project aimed at responding to current needs are outlined.
Confronting the Reality of Changed Lives: Love and Loss for Women in Civil War America (2010)

The women left at home during the American Civil War are often left out of historical research; this work considers this forgotten group by examining women’s wartime letters and diaries. Patriotism and religious devotion, both in the Union and the Confederacy, played a major role in women’s attitudes in the face of war. The evidence studied herein illustrates how the sense of duty to the cause either faltered or grew stronger as women waited at home for the war to take its toll. Young women refused to marry men until they enlisted, mothers insisted that their sons continue fighting until the war was won, and a woman’s patriotism often remained whole even after her family had been torn apart. Ultimately, though, what these emotional reports of personal tragedy reveal is the natural strength of Civil War women to both remain strong and loyal in a time of crisis, and to acknowledge their vulnerability and confront their grief.
New-Generation Drug-Eluting Stents for Patients With Myocardial Infarction (2012)

Our website uses cookies to enhance your experience. By continuing to use our site, or clicking "Continue," you are agreeing to our Cookie Policy | Continue JAMA HomeNew OnlineCurrent IssueFor Authors Publications JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry (1919-1959) Podcasts Clinical Reviews Editors' Summary Medical News Author Interviews More JN Learning / CMESubscribeJobsInstitutions / LibrariansReprints & Permissions Terms of Use | Privacy Policy | Accessibility Statement 2023 American Medical Association. All Rights Reserved Search All JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Forum Archive JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry Input Search Term Sign In Individual Sign In Sign inCreate an Account Access through your institution Sign In Purchase Options: Buy this article Rent this article Subscribe to the JAMA journal
Fluidized bed silicon deposition (1984)

The growth of silicon on seed particles from the pyrolysis of silane in a fluidized bed reactor (FBR) was studied. The grown particles were shown to be crystalline and to have a structure which has been interpreted to indicate growth by chemical vapor deposition as well as by the collection (scavenging) of silicon clusters on seed particle surfaces. Scanning electron microscopy was used to study the product morphology.
Fiber-image Analysis Part I: Fiber-image Enhancement (1996)

This is the first paper in a series of puhlications on flber-image analysis. Image-analysis technology provides a new means of automatic measurement of fiber length, diameter, color, and other properties. This paper concerns the adaptation of image-processing techniques for enhancing fiber images, including background-leveling, valley-mapping and watershed segmentation, boundary extraction, and skeletonization. Specific attention is given to describing changes in the algorithms made for improving accuracy and efficiency. The implementation of the algorithms is explained with actual fiber images. These image-enhancement techniques are essential for a reliable and accurate fiber-measurement system.
A Non-invasive Ultrasound Transit Time Flowmeter (2005)

Ultrasound transit time concepts for flow measurements have the advantage that they are sensitive to true movement of a fluid medium as compared to Doppler techniques that sense particle movement. This paper presents a method that explores the possibility of using transit time concepts to measure the fluid flow non-invasively, from one side of the carrying vessel. Preliminary experimental results on a flow phantom system resulted in a slope within 0.3% of the value predicted theoretically for the geometry used.
Thermodynamic and Kinetic Stability of DSPE-PEG(2000) Micelles in the Presence of Bovine Serum Albumin (2010)

This work investigated the stability of DSPE-PEG(2000) micelles in the presence of bovine serum albumin (BSA). DSPE-PEG(2000) was found to exist in equilibrium among monomeric, micellar, and BSA-bound states, and this equilibrium shifted toward the BSA-bound state when the temperature increased from 20 to 37 °C. The micellar state is thermodynamically unstable at both temperatures when the concentration of BSA approaches that of DSPE-PEG(2000), and micelle breakup occurs with a first-order time constant of 130 ± 9 min at 20 °C and 7.8 ± 1.6 min at 37 °C. Thus, previous targeting experiments that demonstrate synergistic effects in multiply functionalized DSPE-PEG(2000) micelles are likely due to targeting that occurs on a timescale faster than that of micelle breakup. Micelle breakup was limited by diffusion at 20 °C whereas at 37 °C monomer desorption from the micelle was the rate-limiting step. These findings give clear guidance concerning the lifetimes of micelles that may be used as diagnostic and therapeutic nanoparticles.
Treatment Planning and Delivery of Whole Brain Irradiation with Hippocampal Avoidance in Rats (2015)

Despite the challenges of planning conformal treatments for small volumes in rodents, our dosimetric and in vivo data show that WBRT with HA is feasible in rats. This study provides a useful platform for further application and refinement of the technique.
Adaptation of Phenylalanine and Tyrosine Catabolic Pathway to Hibernation in Bats (2013)

Some mammals hibernate in response to harsh environments. Although hibernating mammals may metabolize proteins, the nitrogen metabolic pathways commonly activated during hibernation are not fully characterized. In contrast to the hypothesis of amino acid preservation, we found evidence of amino acid metabolism as three of five key enzymes, including phenylalanine hydroxylase (PAH), homogentisate 1,2-dioxygenase (HGD), fumarylacetoacetase (FAH), involved in phenylalanine and tyrosine catabolism were co-upregulated during hibernation in two distantly related species of bats, Myotis ricketti and Rhinolophus ferrumequinum. In addition, the levels of phenylalanine in the livers of these bats were significantly decreased during hibernation. Because phenylalanine and tyrosine are both glucogenic and ketogenic, these results indicate the role of this catabolic pathway in energy supply. Since any deficiency in the catabolism of these two amino acids can cause accumulations of toxic metabolites, these results also suggest the detoxification role of these enzymes during hibernation. A higher selective constraint on PAH, HPD, and HGD in hibernators than in non-hibernators was observed, and hibernators had more conserved amino acid residues in each of these enzymes than non-hibernators. These conserved amino acid residues are mostly located in positions critical for the structure and activity of the enzymes. Taken together, results of this work provide novel insights in nitrogen metabolism and removal of harmful metabolites during bat hibernation.
Hydrophobicities and Electrophoretic Mobilities of Anaerobic Bacterial Isolates from Methanogenic Granular Sludge (1992)

The hydrophobicities and electrophoretic mobilities of isolates from methanogenic anaerobic granular sludge were measured and compared with those of strains from culture collections. All new isolates were highly hydrophobic, indicating that the upflow anaerobic sludge blanket reactor concept selects for hydrophobic bacteria. Methanothrix soehngenii, a methanogen often observed in methanogenic granular sludge, was highly hydrophobic and showed low electrophoretic mobility at pH 7. The role of this strain in the formation of methanogenic granular sludge is discussed.
An expansion method of measuring the Peltier coefficient (1928)

When a current is passed through the wires of a thermoelectric junction the alteration in temperature at the junction produces a change in length over and above that produced on the resistance heating effect. An expression for this change in length is developed in terms of the Peltier coefficient and other properties of the metals forming the couple. The experimental arrangement is such as to eliminate the resistance heating effect.
Formation and evolution of sediment layers in an aggregating colloidal suspension (2006)

The coupled aggregation and sedimentation of colloidal particles with short-range attractions are investigated. Nonadsorbing polymer is used to induce depletion interactions between the hard-sphere particles. Gravitational forces, caused by a density mismatch between the particles and the suspending fluid, result in the sedimentation of particles and aggregates, as well as the compaction and rearrangement of the final sediment layer. At low polymer concentrations CP, or low initial volume fractions phio, clusters formed during the period of fast sedimentation are small, and the structure of the final sediment is dense. Conversely, at high CP, or high phio, large clusters form during sedimentation, and the resulting sediment structure is significantly less dense, with large void volumes. The size of the presediment aggregates depends on CP and phio with a functional form that resembles other thermally activated barrier hopping processes in colloidal systems, such as the delayed sedimentation of colloidal gels. Finally, when the particles are weakly attractive, gravitational stresses are found to induce compaction of the sediment over long periods of time. However, sediments composed of particles that are strongly attractive resist rearrangements and compaction, even when the sediment layers have a relatively large amount of free volume.
Signal Transducer and Activator of Transcription 3 (STAT3) Regulates Human Telomerase Reverse Transcriptase (hTERT) Expression in Human Cancer and Primary Cells (2005)

Signal transducer and activator of transcription 3 (STAT3) is a transcription factor that plays a critical role in cytokine and growth factor signaling and is frequently activated in human tumors. Human telomerase reverse transcriptase (hTERT) is also often overexpressed in tumor cells and mediates cellular immortalization. Here we report that STAT3 directly regulates the expression of hTERT in a variety of human cancer cells. Moreover, STAT3 activity is required for the survival of many human tumors, and hTERT expression contributes to the survival of STAT3-dependent tumor cells. In addition, we find that growth factors and cytokines stimulate hTERT expression in primary human cells in a STAT3-dependent manner. Thus, STAT3 is a key regulator of hTERT expression in both normal and tumor cells.
Reaction of 3-phenylglycidic esters. III. Reaction of cis-3-arylglycidic esters with various thiophenols. (1985)

The reaction of the cis-3-arylglycidic esters 2 and 10 with thiophenols (3) has been investigated. The reactivity and stereoselectivity of the oxirane ring-opening of these cis-glycidic esters were lower than those of the trans-analogues (1 and 9). These tendencies were more apparent in the 4-MeO derivative (2). On the other hand, the tin-catalyzed reaction of 2 with 3a was highly stereospecific and afforded the cis-opening product (5a).
Light weight high performance microstrip antenna array for manportable radars (2003)

The paper describes the design realisation of a 512 (32 × 16) element microstrip antenna array in X-band, offering high performance features applicable to manportable search radars. The new planar array configuration realised, utilises optimised inset fed square patch elements distributed on a small size aperture, with a low loss multilayer hybrid corporate feed network designed for a low sidelobe Taylor's amplitude distribution. The novel microstrip antenna array, designed, fabricated in numbers and tested, has offered a fairly wide bandwidth (4%) in X-band, a high gain (> 30 dB) with a good return loss (< -15 dB) and low sidelobe (< -25 dB) pattern performance through the bandwidth, and weighs only 1.2 kg with its back-up structure.
Co2+:ZnSe Saturable Absorber Q-switch for the 1.54 μm Er3+:Yb3+:Glass Laser (1997)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text M. Bimbaum, M. B. Camargo, S. Lee, R. D. Stultz, and F. Unlu, "Co2+:ZnSe Saturable Absorber Q-switch for the 1.54 μm Er3+:Yb3+:Glass Laser," in Advanced Solid State Lasers, C. Pollock and W. Bosenberg, eds., Vol. 10 of OSA Trends in Optics and Photonics Series (Optica Publishing Group, 1997), paper QS7. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
A VLSI Scan-Chain Optimization Algorithm for Multiple Scan-Paths (1999)

this paper, we havepro oo afo##4fl:G4 algo#4fl: fo the scan-chain onflfi5WDGfl:5 proflfi5 in multiplescan
Electrical Resistance Corrosion Measurements Employing Alternating Current (1957)

An electrical resistance method, employing alternating current for measuring corrosion rates, has been developed. This method is based on the fact that when a low voltage, stable alternating current passes through the corrosion specimen, a small AC voltage drop is produced across the specimen. This small voltage drop is amplified and measured. Increases in voltages drop values so measured are directly proportional to the corrosion occurring. It is shown that this method of corrosion measurement is applicable to systems containing distilled water at room temperature, closed recirculating tap water at temperatures above 170 F, flowing return line condensate, and possibly to tubular material in service. In all of the above applications, corrosion measurements may be made without interrupting the process or system. 2.3.5
View-Dependent Rendering of Multiresolution Texture-Atlases (2006)

Real-time rendering of massively textured 3D scenes usually involves two major problems: Large numbers of texture switches are a well-known performance bottleneck and the set of simultaneously visible textures is limited by the graphics memory. This paper presents a level-of-detail texturing technique that overcomes both problems. In a preprocessing step, the technique creates a hierarchical data structure for all textures used by scene objects, and it derives texture atlases at different resolutions. At runtime, our texturing technique requires only a small set of these texture atlases, which represent scene textures in an appropriate size depending on the current camera position and screen resolution. Independent of the number and total size of all simultaneously visible textures, the achieved frame rates are similar to that of rendering the scene without any texture switches. Since the approach includes dynamic texture loading, the total size of the textures is only limited by the hard disk capacity. The technique is applicable for any 3D scenes whose scene objects are primarily distributed in a plane, such as in the case of 3D city models or outdoor scenes in computer games. Our approach has been successfully applied to massively textured, large-scale 3D city models.
GaN/GaInN/GaN Double Heterostructure Light Emitting Diode Fabricated Using Plasma-Assisted Molecular Beam Epitaxy (1995)

High-quality GaN and Ga 1- x In x N ( x ≤0.2) have been grown by RF-plasma-assisted molecular beam epitaxy (RF-MBE) on the GaN/AlN/sapphire substrate grown by metalorganic vapor-phase epitaxy for the first time. GaN and GaInN showed intense near-band-edge photoluminescence (PL) at room temperature. A double hetero-structure (DH) of p -GaN:Mg/Ga 0.8 In 0.2 N/ n -GaN has been fabricated. The DH light emitting diode showed intense violet emission upon current injection at room temperature.
Lymphotoxin-β receptor in microenvironmental cells promotes the development of T-cell acute lymphoblastic leukaemia with cortical/mature immunophenotype (2015)

Lymphotoxin-mediated activation of the lymphotoxin-β receptor (LTβR; LTBR) has been implicated in cancer, but its role in T-cell acute lymphoblastic leukaemia (T-ALL) has remained elusive. Here we show that the genes encoding lymphotoxin (LT)-α and LTβ (LTA, LTB) are expressed in T-ALL patient samples, mostly of the TAL/LMO molecular subtype, and in the TEL-JAK2 transgenic mouse model of cortical/mature T-ALL (Lta, Ltb). In these mice, expression of Lta and Ltb is elevated in early stage T-ALL. Surface LTα1 β2 protein is expressed in primary mouse T-ALL cells, but only in the absence of microenvironmental LTβR interaction. Indeed, surface LT expression is suppressed in leukaemic cells contacting Ltbr-expressing but not Ltbr-deficient stromal cells, both in vitro and in vivo, thus indicating that dynamic surface LT expression in leukaemic cells depends on interaction with its receptor. Supporting the notion that LT signalling plays a role in T-ALL, inactivation of Ltbr results in a significant delay in TEL-JAK2-induced leukaemia onset. Moreover, young asymptomatic TEL-JAK2;Ltbr(-/-) mice present markedly less leukaemic thymocytes than age-matched TEL-JAK2;Ltbr(+/+) mice and interference with LTβR function at this early stage delayed T-ALL development. We conclude that LT expression by T-ALL cells activates LTβR signalling in thymic stromal cells, thus promoting leukaemogenesis.
PressLight (2019)

Traffic signal control is essential for transportation efficiency in road networks. It has been a challenging problem because of the complexity in traffic dynamics. Conventional transportation research suffers from the incompetency to adapt to dynamic traffic situations. Recent studies propose to use reinforcement learning (RL) to search for more efficient traffic signal plans. However, most existing RL-based studies design the key elements - reward and state - in a heuristic way. This results in highly sensitive performances and a long learning process. To avoid the heuristic design of RL elements, we propose to connect RL with recent studies in transportation research. Our method is inspired by the state-of-the-art method max pressure (MP) in the transportation field. The reward design of our method is well supported by the theory in MP, which can be proved to be maximizing the throughput of the traffic network, i.e., minimizing the overall network travel time. We also show that our concise state representation can fully support the optimization of the proposed reward function. Through comprehensive experiments, we demonstrate that our method outperforms both conventional transportation approaches and existing learning-based methods.
Fast Jets from Collapsing Cylinders (1952)

A method is described for producing fast jets from the collapse of metal-lined cavities in high explosives. The behavior of these jets suggests that they cannot be accounted for by the simple hydrodynamical considerations that have in the past been successful when applied to slower type jets. Various experiments, including time-resolved spectrographic observations, show the jets to be, at least in part, of a gaseous nature. Velocities as high as 90 km/sec have been observed for beryllium jets, with heavier elements exhibiting lower velocities in inverse order of their atomic weights.
New Terpenes from the Egyptian Soft Coral Sarcophyton ehrenbergi (2014)

Chemical investigations of the Egyptian soft coral Sarcophyton ehrenbergi have led to the isolation of compounds 1-3 as well as the previously reported marine cembranoid diterpene sarcophine (4). Structures were elucidated by comprehensive NMR and HRMS experimentation. Isolated compounds were in vitro assayed for cytotoxic activity against human hepatocarcinoma (HepG2) and breast adenocarcinoma (MCF-7) cell lines.
Entangled quantum key distribution over two free-space optical links (2008)

We report on the first real-time implementation of a quantum key distribution (QKD) system using entangled photon pairs that are sent over two free-space optical telescope links. The entangled photon pairs are produced with a type-II spontaneous parametric down-conversion source placed in a central, potentially untrusted, location. The two free-space links cover a distance of 435 m and 1,325 m respectively, producing a total separation of 1,575 m. The system relies on passive polarization analysis units, GPS timing receivers for synchronization, and custom written software to perform the complete QKD protocol including error correction and privacy amplification. Over 6.5 hours during the night, we observed an average raw key generation rate of 565 bits/s, an average quantum bit error rate (QBER) of 4.92%, and an average secure key generation rate of 85 bits/s.
Towards Imaging the Beating Heart Usefully with a Conventional CT Scanner (1981)

Using a stroboscopic procedure based on electrocardiographic gating, "stationary" images of the beating heart can be obtained from X-ray computed tomography body scanners. However, due to the limited amount of time over which the heart motion is periodic, only a small number of projections (X-ray views) per phase of the heart cycle can be measured. It is suggested here how to obtain satisfactory image quality when only a limited number of projections per phase are available. The procedure involves recognizing that the material surrounding the heart is stationary, and so can be estimated using a large number of projections. It is shown how this estimate can be used to alter the measured projections in such a way that the image of the heart region can be significantly improved.