gebhart/patrepeval huggingface dataset:
Design of microstrip bandpass filters with a dual-passband response (2005)

This paper presents a rigorous design of microstrip bandpass filters with a dual-passband response in parallel-coupled and vertical-stacked configurations. Based on resonance characteristics of a stepped impedance resonator (SIR), the second resonant frequency can be tuned over a wide range by adjusting its structure parameters. Emphasis is placed on filter synthesis for simultaneously matching in-band response and singly loaded Q by using tapped input/output couplings for the two designated passbands. Fractional bandwidth design graphs are used to determine proper geometric parameters of each coupled stage when filter specification is given. Realizable fractional bandwidths of the two passbands for a coupled SIR structure are clearly depicted in fractional bandwidth design graphs. Several experimental filters are fabricated and measured to demonstrate the design.
Pathways of Fibrin Turnover of Human Pleural Mesothelial Cells <i>In Vitro</i> (1992)

The mesothelium contains both procoagulant and fibrinolytic activities. An imbalance between these activities could account for the abnormal fibrin turnover and pleural fibrin deposition that is characteristic of pleural inflammation. Procoagulant activity of human pleural mesothelial cells (HPMC) is in part due to tissue factor, and the prothrombinase complex can also assemble at the HPMC surface. HPMC express tissue plasminogen activator (tPA) but no detectable fibrinolytic activity in a fibrin plate assay. Inhibition of HPMC fibrinolytic activity is due, in part, to elaboration of plasminogen activator inhibitors-1 and -2 (PAI-1 and PAI-2) as well as antiplasmins. Synthesis of PAI-1 and PAI-2 is inhibited by actinomycin D and cyclohexamide. HPMC PAI-1 is increased by transforming growth factor-beta (TGF-beta) and tumor necrosis factor-alpha (TNF-alpha), as is tPA release, while PAI-1 mRNA is unchanged and tPA mRNA is increased. PAI-2 release is induced by TNF-alpha and TGF-beta. Because they are a rich source of PAI-1 and PAI-2, HPMC may contribute to the high levels of these inhibitors in pleural exudates. Stimulation of HPMC by TNF-alpha or TGF-beta in vitro did not alter HPMC procoagulant activity nor the balance of elevated PAI and antiplasmins relative to PA, changes that collectively favor formation and persistence of pericellular fibrin.
2002 Survey of Rhode Island Law: Cases: Contract (2003)

Lymph nodal cyst-like lesions are occasionally identified during abdominal ultrasound in dogs. However, a study evaluating their prevalence and clinical significance is lacking. The aim of this observational cross-sectional study was to evaluate prevalence, most common location and concurrent diseases of cyst-like lymph nodes detected during abdominal ultrasound. Affected lymph nodes, patient signalment and concurrent diseases of dogs with cyst-like lymph nodal lesions having undergone abdominal ultrasound over a one-year period were recorded. Twenty-three affected lymph nodes were observed in 17/553 dogs (prevalence=3 per cent). The most commonly affected was the lumbar lymphocenter (7/23), followed by the coeliac (6/23), the cranial mesenteric (5/23) and the iliosacral (5/23). Twenty-three concurrent diseases were diagnosed in 17 dogs, among which 16/23 were non-neoplastic (70 per cent). The most common concurrent disease was renal insufficiency (8/23), followed by neoplasia (7/23), gastroenteropathy (3/23), benign prostatic disease (2/23), pancreatitis (1/23), peritonitis (1/23) and neurological disease (1/23). No statistical correlation existed between cyst-like lymph nodal lesion and a specific neoplastic or non-neoplastic disease. In conclusion, in the present study, cyst-like lymph nodal lesions have a low prevalence, involve different lymphocenters and were found in dogs affected by different diseases, including both non-neoplastic and neoplastic aetiologies.
PIEZA CÚBICA CELTIBÉRICA DE ARCILLA HALLADA EN SEPÚLVEDA (2004)

Entre los muchos y variados objetos singulares celtibéricos elaborados en cerámica, los dados o piezas cúbicas constituyen una rareza extrema. En estas páginas vamos a dar a conocer un cubo hallado en Sepúlveda cuya mayor peculiaridad es la rica y variada ornamentación que presentan sus caras. Son varias las opciones interpretativas que pueden barajarse en cuanto a su posible funcionalidad. La iconografía desarrollada en sus caras y la secuencia histórica documentada en el yacimiento nos permiten proponer una datación probable de finales del siglo I a. C.Palabras clave: Edad del Hierro, valle del Duero, cerámica celtibérica, iconografía.AbstractIn the repertory of the Celtiberian singulars clay productions, the cubes or dice are very rares. In this paper we are going to study a cubic object from the archaeological site of Sepúlveda, very rich decorated in each side. Its not clear the function of this original piece and by this reason we must contemplated different options. The peculiar iconography (with geometric and zoomorphic motifs) engraved in the six sides, and the general datation of the settlement suggest a chronology of late 1st century B.C.Keywords: Iron Age, Duero Valley, celtiberian pottery, iconography.
An analysis of polarization mixing errors in distance measuring interferometers (1990)

Many distance measuring interferometers use orthogonally polarized beams in their reference and measurement arms. In practice, instrumental imperfections corrupt the polarized beam in each arm with a small amplitude signal from the other arm having the perpendicular polarization. The impact of this polarization mixing on the absolute accuracy of a single frequency laser interferometer is shown to be significantly smaller than on the accuracy of a two-frequency interferometer. Certain signals obtained from a single-frequency interferometer have no phase error due to polarization mixing. Other signals are affected in proportion to the ratio between the small mixing amplitudes and the primary polarization amplitudes. Roughly, those errors in the single frequency device depend on the square of the small mixing ratios while the error in the two frequency interferometer depends on a larger quantity, the sum of these ratios. For a mixing ratio of 0.1, the error in the single-frequency interferometer is about 20 times smaller than in the heterodyne interferometer.
Beam-steering antenna based on parasitic layer (2012)

A beam-steering antenna based on a parasitic layer operating at around 5.6 GHz is presented. It is capable of steering its beam into three directions (thetasm=−30°, 0°, 30°). The structure consists of a driven microstrip-fed patch element and a parasitic layer located on top of the driven patch. The upper surface of the parasitic layer has a grid of 5×5 electrically-small rectangular-shaped metallic pixels, which can be connected/disconnected by means of switching, thus the parasitic pixel surface geometry is changed. The electromagnetic mutual coupling between the driven patch and the parasitic pixel surface is responsible for achieving the desired beam-steering. Prototypes of the designed antennas have been fabricated showing ∼8 dB realised-gain in all steered beam directions.
An interactive land use VRML application (ILUVA) with servlet assist (2000)

We summarize progress achieved on an interactive land use VRML application (ILUVA) with servlet assist. The purpose of this application is to enable one to take a virtual land area and add buildings, roadways, landscaping and other features. The application is implemented entirely using standard web based technologies to allow fairly universal accessibility. The Virtual Reality Modeling Language (VRML) is a programming language that describes three dimensional objects and defines interactions associated with these objects. In this work, we show how the interactive capabilities can be expanded by employing Java servlets for recording user actions and for restoring prior sessions. The Java servlets offer several powerful capabilities including enabling logging permanent records of user sessions, retrieval of prior sessions, and dynamically generated VRML.
Programming Web services with SOAP (2001)

The web services architecture provides a new way to think about and implement application-to-application integration and interoperability that makes the development platform irrelevant. Two applications, regardless of operating system, programming language, or any other technical implementation detail, communicate using XML messages over open Internet protocols such as HTTP or SMTP. The Simple Open Access Protocol (SOAP) is a specification that details how to encode that information and has become the messaging protocol of choice for Web services.Programming Web Services with SOAP is a detail
Genetic Consequences of Blocking Polar Body I with Cytochalasin B in Fertilized Eggs of the Pacific Oyster, <i>Crassostrea gigas</i>: I. Ploidy of Resultant Embryos (1992)

The effect of blocking polar body I (PB1) with cytochalasin B (CB) on the ploidy of embryos was studied in the Pacific oyster, Crassostrea gigas. To block the release of PB1, fertilized eggs were treated with CB (1.0 μg/ml) for 15 min beginning at 5 min post-fertilization at 25°C. The CB treatment and its control were repeated in three crosses. Ploidy of 8-h-old embryos was determined with karyological analysis. In control groups, the majority of the cells (89.3%) had a diploid number of 20 chromosomes, although spontaneous haploids (0.7%), triploids (1.3%) and aneuploids (8.7%) were also encountered. In CB-treated groups, only 4.5% of the cells remained as diploid, and the majority were either triploid (15.6%), tetraploid (19.4%) or aneuploid (57.6%). Despite variation among the three crosses, contingency Chi-square analysis showed that the occurrence of triploids, tetraploids and aneuploids had a significant (P = 0.0001) dependence on the CB treatment. The majority of the aneuploids fell into two groups containing either 23-25 or 35-37 chromosomes. The production of triploids, tetraploids and aneuploids in specific distributions suggests that blocking PB1 complicates subsequent chromosome segregation.
A reconfigurable FTL (flash translation layer) architecture for NAND flash-based applications (2008)

In this article, a novel FTL (flash translation layer) architecture is proposed for NAND flash-based applications such as MP3 players, DSCs (digital still cameras) and SSDs (solid-state drives). Although the basic function of an FTL is to translate a logical sector address to a physical sector address in flash memory, efficient algorithms of an FTL have a significant impact on performance as well as the lifetime. After the dominant parameters that affect the performance and endurance are categorized, the design space of the FTL architecture is explored based on a diverse workload analysis. With the proposed FTL architectural framework, it is possible to decide which configuration of FTL mapping parameters yields the best performance, depending on the differing characteristics of various NAND flash-based applications.
Involvement of Apoptosis Inhibitor of Macrophages in a Rat Hypertension Model with Nephrosclerosis: Possible Mechanisms of Action of Olmesartan and Azelnidipine (2013)

Stroke-prone spontaneously hypertensive (SHRsp) rats develop severe hypertension resulting in renal injury. We investigated apoptosis inhibitor of macrophages (AIM) expression in nephrosclerotic rats and the involvement of AIM in olmesartan (OLM)- and azelnidipine (AZN)-induced decreases in the number of macrophages infiltrating the kidney. We randomly assigned 20-week-old male SHRsp rats to receive one of the following substances every day for 12 weeks: water (vehicle), hydralazine (HYD), OLM, or AZN. Renal damage was assessed by Masson trichrome staining. Expressions of ED-1, AIM, and oxidized low-density lipoprotein (oxLDL) were immunohistochemically detected. Apoptosis was analyzed by terminal deoxynucleotidyl transferase deoxyuridine triphosphate (dUTP) nick-end labeling (TUNEL) staining. All treatment groups showed significantly less renal interstitial fibrosis than the vehicle group. AZN and OLM groups had significantly fewer AIM-expressing cells than the HYD and vehicle groups. The ratios AIM-positive cells/ED-1-positive macrophages and TUNEL-positive cells/ED-1-positive macrophages in the AZN and OLM groups were lower and higher, respectively, than the the HYD and vehicle groups. oxLDL expression in the renal interstitium was significantly lower in treatment groups compared to vehicle group. OLM and AZN inhibited interstitial fibrosis progression in SHRsp rats by suppressing AIM expression in macrophages, followed by reducing the number of infiltrating macrophages.
Dorsal cochlear nucleus responses to somatosensory stimulation are enhanced after noise‐induced hearing loss (2007)

Multisensory neurons in the dorsal cochlear nucleus (DCN) achieve their bimodal response properties [Shore (2005) Eur. J. Neurosci., 21, 3334-3348] by integrating auditory input via VIIIth nerve fibers with somatosensory input via the axons of cochlear nucleus granule cells [Shore et al. (2000) J. Comp. Neurol., 419, 271-285; Zhou & Shore (2004)J. Neurosci. Res., 78, 901-907]. A unique feature of multisensory neurons is their propensity for receiving cross-modal compensation following sensory deprivation. Thus, we investigated the possibility that reduction of VIIIth nerve input to the cochlear nucleus results in trigeminal system compensation for the loss of auditory inputs. Responses of DCN neurons to trigeminal and bimodal (trigeminal plus acoustic) stimulation were compared in normal and noise-damaged guinea pigs. The guinea pigs with noise-induced hearing loss had significantly lower thresholds, shorter latencies and durations, and increased amplitudes of response to trigeminal stimulation than normal animals. Noise-damaged animals also showed a greater proportion of inhibitory and a smaller proportion of excitatory responses compared with normal. The number of cells exhibiting bimodal integration, as well as the degree of integration, was enhanced after noise damage. In accordance with the greater proportion of inhibitory responses, bimodal integration was entirely suppressive in the noise-damaged animals with no indication of the bimodal enhancement observed in a sub-set of normal DCN neurons. These results suggest that projections from the trigeminal system to the cochlear nucleus are increased and/or redistributed after hearing loss. Furthermore, the finding that only neurons activated by trigeminal stimulation showed increased spontaneous rates after cochlear damage suggests that somatosensory neurons may play a role in the pathogenesis of tinnitus.
The optimization of dual-core closed-loop fluxgate technology in precision current sensor (2012)

This paper presents a new dual-core closed-loop flux gate current sensor. The mathematical model was built, and the parameters that affect the characteristics of the flux gate current sensor were analyzed. The effects of the structural parameters on output characteristics of the sensor were simulated. Based on the simulation results, a prototype was designed, and the test results have a good agreement with the simulation results. The current sensor has the advantages of ultra low nonlinear error ( ± 3‰) and low offset error. The noise in the primary current is eliminated when measuring dc or ac signal. Especially, the designed dual-core closed-loop flux gate current sensor can measure current up to 20 kHz with the nominal primary current value of ± 30 A.
Reduction of Organic Compounds by Alkoxyaluminohydrides (1972)

The introduction of alkoxy groups into lithium aluminohydride, sodium aluminohydride, and aluminum hydride usually results in modification of the steric requirements and thus of the reducing properties of the parent hydrides. The reactions of these alkoxy-aluminohydrides with organic compounds are reviewed with special regard to selective reductions of functional groups in the presence of other reducible substituents, to partial reductions of esters, acid halides, amides, and nitriles to aldehydes, to stereospecific reductions of cyclic ketones and steroids and to hydrogenolytic reactions of these alkoxyhydrides in comparison with common metal hydrides. 1. Introduction 2. Preparation of Alkoxyaluminohydrides 2.1. Lithium Alkoxyaluminohydrides 2.2. Alkoxyaluminohydrides 2.3. Sodium Alkoxyaluminohydrides 3. Reactions of Alkoxyaluminohydrides 3.1. Active Hydrogen Compounds 3.2. Aldehydes and Ketones Stereospecific Reductions of Monocyclic and Bicyclic Ketones 3.3. Steroids 3.4. Carboxylic Acids and Acid Anhydrides 3.5. Esters and Lactones 3.6. Carboxylic Acid Halides 3.7. Amides, Imides, and Lactams 3.8. Nitriles 3.9. Alkyl and Aryl Halides 3.10. Epoxides 3.11. Quinones 3.12. Nitro Compounds and Their Derivatives 3.13. Other Nitrogen Compounds 3.14. Sulfur Compounds 3.15. Aromatic Hydrocarbons 3.16. Organometallic Compounds
In Vitro and In Vivo Immunomodulatory Effects of Mesenchymal Stem Cells from Adipose Tissue. (2005)

Abstract Previous studies have shown the immunomodulatory properties of bone marrow mesenchymal stem cells (BM-MSCs), opening the possibility of using these cells for the treatment of graft-versus-host disease (GVHD) in patients transplanted with allogeneic hematopoietic grafts. Additionally, Phase I studies in patients with Crohn’s disease suggested the efficacy of adipose tissue-derived mesenchymal stem cells (Ad-MSCs) for the healing of Crohn’s fistulas. In the present study we have investigated in vitro and in vivo, the immunomodulatory effects of Ad-MSCs, compared to BM-MSCs. We observed that both BM-MSCs and Ad-MSCs were negative for CD34, CD45, CD14, CD31 and MHC class I expression, while positive for CD29, CD44, CD90 and CD105. When studying the immunomodulatory effects of these cells in vitro, we found that - as happened with BM-MSCs - Ad-MSCs did not induce proliferation of allogeneic lymphocytes and were not lysed by cytotoxic T cells or alloreactive natural killer cells, indicating that Ad-MSCs are non-immunogenic. Additionally, the presence of Ad-MSCs inhibited in a dose-dependent fashion, both the mixed lymphocyte reaction (MLR) and the T cell proliferation induced by mitogens. To determine whether cell-to-cell contact between Ad-MSCs and PBMNCs was required for immunosuppression, transwell experiments were conducted. Phytohaemagglutinin (PHA)-stimulated lymphocytes were cultured in the upper chamber of a transwell, while irradiated Ad-MSCs remained in the lower chamber. As observed with BM-MSCs, Ad-MSCs were also capable of suppressing the lymphocytes proliferation in this transwell assay. When conditioned medium from Ad-MSCs was added to the MLR, the immuno-suppressive effect persisted, although at a lower level than that observed in a cell-to-cell contact system. Next we studied whether our in vitro findings were of significance in an in vivo mouse model of haploidentical transplantation. In these experiments irradiated F1(C57Bl/Balbc) recipient mice received 1x107 bone marrow cells from C57Bl mice, together with 2x107 splenocytes from the donor, to induce GVHD. One cohort of recipient mice received additional i.v. infusions of 5x105 mouse Ad-MSCs, administered at periodic intervals for up to 28 days post-transplant. When compared to the control group, the severity of the GVHD was significantly reduced in mice receiving Ad-MSCs. Our results suggest that Ad-MSCs obtained from adipose tissue may constitute a new and readily available source of immunomodulatory cells for the prophylaxis and/or treatment of GVHD in patients transplanted with allogeneic grafts.
The Impact of HCl to HF Ratio on Hydrated Silica Formation During the Acidizing of a High Temperature Sandstone Gas Reservoir in Saudi Arabia (2002)

Abstract Since the mid-1990s the use of HCl/HF at a weight ratio of 9 to 1 has been used extensively in field operations to minimize precipitation during sandstone acidizing. Although it was perceived as applying to all secondary reactions, it was originally directed at fluosilicates. Field case histories have been reported to support this recommendation. However, little evidence is available to justify the use of 9 wt% HCl – 1 wt% HF (9-1 mud acid) at the 300°F temperature exhibited in the Jauf reservoir. Thus, a laboratory study incorporating HF systems with various HCl to HF ratios was performed to quantify the amount of precipitation in Jauf reservoir cores at 300°F, and the impact on permeability. The focus of this paper is on the silicon (Si) and aluminum (Al) concentrations in core flow test effluents that were corrected for post-core test precipitation of reaction products in collection tubes. This technique accounts for the Si and Al in the liquid and solid phases of core flow effluents. The literature teaches that the Si/Al molar ratio of a core test effluent can be used as a diagnostic tool to quantify hydrated silica formation. It is assumed that hydrated silica precipitation increases as the Si/Al ratio decreases from the theoretical value as a result of a greater completion of the secondary and tertiary reactions of HF with silt and clays. The results of this study on short Jauf reservoir and Berea cores at 300°F indicate that cores treated with 9 wt% HCl – 1 wt% HF yield a lower Si/Al ratio than observed with 12 wt% HCl – 3 wt% HF. However, cores treated with 4 wt% HCl – 1 wt% HF yield the lowest Si/Al ratio. The Si/Al ratio is not the only diagnostic tool required to determine the amount of hydrated silica precipitation i.e. factors including the mud acid flow pattern (matrix vs. channel) have a significant impact on the Si/Al ratio. Core flow test results are presented for acetic acid preflush followed by various mud acid systems. All cores were stimulated, although hydrated silica formed in all core tests and aluminum fluoride precipitated in core tests using 4-1 mud acid formulations at 300°F.
Coincident sequence cloning. (1991)

We describe a novel method, Coincident Sequence Cloning (CSC), which permits the selective recovery of common sequences shared between two complex and partially coincident DNA mixtures. We evaluate this method by integrating human DNA with DNA from a mouse-human somatic cell hybrid, and we recover exclusively human DNA products which are all represented in the hybrid genome. CSC strategies should be useful in addressing many highly complex problems in genome analysis.
An Efficient Resource-Allocation Scheme for Spatial Multiuser Access in MIMO/OFDM Systems (2005)

Fast adaptive transmission has been recently identified as a key technology for exploiting potential system diversity and improving power-spectral efficiency in wireless communication systems. An adaptive resource-allocation approach, which jointly adapts subcarrier allocation, power distribution, and bit distribution according to instantaneous channel conditions, is proposed for multiuser multiple-input multiple-output (MIMO)/orthogonal frequency-division multiplexing systems. The resultant scheme is able to: 1) optimize the power efficiency; 2) guarantee each user's quality of service requirements, including bit-error rate and data rate; 3) ensure fairness to all the active users; and 4) be applied to systems with various types of multiuser-detection schemes at the receiver. For practical implementation, a reduced-complexity allocation algorithm is developed. This algorithm decouples the complex multiuser joint resource-allocation problem into simple single-user optimization problems by controlling the subcarrier sharing according to the users' spatial separability. Numerical results show that significant power and diversity gains are achievable, compared with nonadaptive systems. It is also demonstrated that the MIMO system is able to multiplex several users without sacrificing antenna diversity by using the proposed algorithm.
Sequestering Soil Organic Carbon: A Nitrogen Dilemma (2017)

This is the author accepted manuscript. The final version is available from American Chemical Society via the DOI in this record.