gebhart/patrepeval huggingface dataset:
Tympanic Membrane Perforation Repair Using Porcine Small Intestinal Submucosal Grafting (2018)

Porcine small intestinal submucosal grafts are effective in the repair of the tympanic membrane. These grafts are an excellent choice in total endoscopic cases as it avoids incisions necessary for allograft harvest.
The effect of growth at low temperature on photosynthetic characteristics and mechanisms of photoprotection of maize leaves (1995)

We examined the photosynthetic properties, the activity of antioxidant enzymes and the amount of caroten-oids of two maize genotypes characterized by different sensitivity to low temperature. Plants of the low-temperature-sensitive genotype A-619 and of the low-temperature-resistant genotype VA-36 were grown at 25/20°C (control plants) and at 16/14°C (plants grown at low temperature). Twenty-five days after seeding, the exposure to low temperature caused, in all plants, a reduction of leaf chlorophyll and carotenoid content, but an increase in the activity of the oxygen-detoxifying enzymes, superoxide dismutase and ascorbate per-oxidase. However, the response of photosynthesis, stomatal conductance and the fluorescence properties to light and temperature were not affected by growth at low temperature. Fifty days after seeding, photosynthesis, stomatal conductance, and fluorescence properties of A-619 leaves grown at low temperature were significantly reduced with respect to control plants at all temperatures and light intensities. In the leaves of A-619 plants grown at low temperature, the electron transport rate was not tightly down-regulated by carbon metabolism and an excess of electrons was shown by the increased ratio between the quantum yield of electron transport of photosystem II and the quantum yield of CO2 assimilation. On the contrary, VA-36 leaves grown at 16°C maintained the same photosynthetic characteristics and photochemical properties as control plants. The chlorophyll content of both genotypes and carotenoid content of A-619 plants were lower in leaves of plants maintained at 16°C than in those grown at 25°C. In contrast, the carotenoid content of VA-36 leaves of plants grown at low temperature were higher than in plants grown at 25°C. The activity of superoxide dismutase and ascorbate peroxidase of VA-36 plants grown at low temperature were higher than in controls. In A-619 plants grown at fow temperature the activity of superoxide dismutase was higher than in controls, but the activity of ascorbate peroxidase was lower than in controls. Our findings suggest that when maize plants are grown at low temperature the electron transport rate may be in excess of carbon metabolism and electrons may be used to reduce oxygen. A co-ordinate increase of pigment amounts and of the activity of oxygen-detoxifying enzymes is necessary to protect maize leaves from the accumulation of oxygen radicals at low temperature. In A-619 plants, the carotenoid content did not increase and the activity of ascorbate peroxidase was low when plants were exposed to low temperature for 50 d. As a result, the photochemical apparatus of A-619 leaves was damaged and photo-oxidation occurred. These experiments also indicated that when photosynthesis was reduced by a transitory reduction of temperature, the electron transport was still tightly down-regulated by carbon metabolism and the photosynthetic apparatus of both genotypes was not damaged.
Thymoquinone reduces cardiac damage caused by hypercholesterolemia in apolipoprotein E-deficient mice (2018)

These results indicate that thymoquinone may provide a potential therapeutic target for cardiac damage caused by hypercholesterolemia.
High‐Gain Phototransistors Based on a CVD MoS2 Monolayer (2013)

A phototransistor based on a chemical vapor deposited (CVD) MoS2 monolayer exhibits a high photoresponsivity (2200 A W(-1) ) and an excellent photogain (5000). The presence of shallow traps contributes to the persistent photoconductivity. Ambient adsorbates act as p-dopants to MoS2 , decreasing the carrier mobility, photoresponsivity, and photogain.
Wide angle imaging system image simulation for accurate neural network performances prediction. (2022)

We developed a simulation pipeline of realistic wide-angle systems and compare the relative influence of optical characteristics used for design optimization (distortion, PSF) on single-image depth estimation accuracy using neural networks.
Bridging Communications and the Physical World (2012)

Sense Everything, Control Everything (SECE) is an event-driven system that lets nontechnical users create services that combine communication, location, social networks, presence, calendaring, and physical devices such as sensors and actuators. SECE combines information from multiple sources to personalize services and adapt them to changes in the user's context and preferences. Events trigger associated actions, which can control email delivery, change how phone calls are handled, update the user's social network status, and set the state of actuators such as lights, thermostats, and electrical appliances.
A study of the biosynthesis of the polyketide polivione in Penicillium frequentans, using 13C-, 2H-, and 18O-labelled precursors (1985)

Polivione, a polyketide metabolite of Penicillium frequentans is shown to incorporate 13C-, 2H-, and 18O-labelled acetates, and 18O-labelled oxygen gas, in a manner consistent with a biosynthesis via a naphthalene intermediate having the same carbon skeleton as fusarubin.
CLINICAL RESULTS OF INTRAOPERATIVE 3-D IMAGING OF TIBIAL PLATEAU FRACTURES (2006)

Anatomic reduction and appropriate implant placement is essential for optimal treatment of intraarticular tibial plateau fractures. Standard intraoperative fluoroscopy provides limited visualization of the reduction and hardware placement compared with pre- or postoperative 3-D imaging modalities. As such, post-operative computer tomography (CT) has become a common procedure to evaluate the quality of the reduction and fixation. The Iso-C3D provides 3-D intraoperatively imaging to dynamically assess the surgical reduction and fixation at different anatomic regions. We report on our first 19 clinical tibial plateau fractures scanned intra-operatively with the Iso-C 3D. Between January and November 2003, 19 intraarticular tibia plateau fractures were scanned intraoperatively with the Iso-C3D (Siemens, Germany). No formal selection criteria were utilised except for the presence of a tibial plateau fracture. Operative procedures included 14 cases of open reduction internal fixation and 5 cases of internal fixation with arthroscopic assisted reduction. Imaging Technique: All patients were positioned on full-carbon tables for the operative procedure. After initial operative reduction and fixation, conventional two-dimensional fluoroscopic imaging was performed using standard AP and lateral projections. These images were evaluated by the operating surgeon; if the reduction and fixation was judged to be appropriate, Iso-C3D imaging was initiated In 21% (n=4) of all cases an immediate revision of the operative procedure was performed after Iso-C3D imaging. These revisions were not deemed necessary with conventional fluoroscopy alone. In two cases, significant intra-articular incongruencies (greater than two millimetres) were noted. Additionally, in two cases, implant mal-position was detected. All patients had a postoperative CT scan. All CT scans confirmed the intraoperative Iso-C imaging, no further additional articular incongruencies or malpositioned implants were identified. When compared to conventional C-arm images, the Iso-C 3D scans demonstrated improved ability to identify the articular malreduction and implant mal-position in all cases. We have demonstrated that the Iso-C3D provides reliable intraoperative evaluation of reduction and hardware placement compared to traditional CT scans for tibial plateau fractures. In addition, clinically relevant intra-operative information was gained with its use in this study. In four (21%) cases, the operative treatment was modified due to the use of the multiplanar imaging modality. On average, 10 minutes of additional operative time was required for the use of Iso-C3D scanning and the evaluation of the images. Further prospective clinical studies are needed to improve our findings.
Nanomaterial Development for Polymeric Solar Cells (2006)

Photoactive nanomaterials are being investigated as multifunctional additives in polymeric photovoltaic devices. Polymer photovoltaic devices which rely solely on photon absorption by the conducting polymer are bandgap-limited (typically > 2 eV) with regard to the solar spectrum. Therefore, nanomaterials with optical absorption below the conducting polymer bandgap can allow composite devices to absorb a larger portion of the solar spectrum. In addition, nanomaterials may play a role in polymer exciton disassociation and transport. We have investigated the use of rare-earth-doped oxide nanoparticles to absorb light in the lower energy region of the solar spectrum, and "up-convert" photons to energies above the polymer bandgap. In addition, we will highlight the synthesis of novel semiconducting quantum dots (QDs) namely, InSb, for absorption in the ideal region of the solar spectrum. Spectroscopy will be provided for both types of materials in addition to the photovoltaic performance of devices incorporating various up-converting nanoparticles. The prospect of coupling single-walled carbon nanotubes to the various up-converting nanoparticles and QDs will be discussed in terms of their previously demonstrated utility in prototype devices
P1077PERSISTENCE OF CIRCULATING RESIDUAL HEPARIN IN ESRD PATIENTS UNDERGOING MAINTENANCE HEMODIALYSIS (2020)

Abstract Background and Aims ESRD patients who receive routine maintenance hemodialysis are administered with unfractionated heparin to prevent thrombotic complications. The hemostatic dysregulation along with detectable levels of circulating heparin may cause them to be in a hypocoagulable state. The purpose of this study is to determine the circulating levels of heparin in ESRD patients and its characterization using heparinase digestion methods. Method Blood plasma samples collected at routine pre-dialysis sessions from 95 ESRD patients undergoing maintenance hemodialysis were analyzed for the presence of residual heparin utilizing standard laboratory methods such as aPTT, Anti-Xa and Anti-IIa activities On a centrifugal analyzer (ACL-Elite: Instrumentation Laboratory, Bedford, MA). The levels of heparin were calculated in terms of units per ml relative to the USP reference standard. Heparinase digestion was used to confirm the presence of heparin. Results Blood plasma samples collected at routine pre-dialysis sessions from 95 ESRD patients undergoing maintenance hemodialysis were analyzed for the presence of residual heparin utilizing standard laboratory methods such as aPTT, Anti-Xa and Anti-IIa activities On a centrifugal analyzer (ACL-Elite: Instrumentation Laboratory, Bedford, MA). The levels of heparin were calculated in terms of units per ml relative to the USP reference standard. Heparinase digestion was used to confirm the presence of heparin. Conclusion The presence of residual heparin was demonstrated by both clot- based and amidolytic assays in the plasma samples collected from ESRD patients prior to their next-dialysis session. Since these samples were obtained 3 days following the last dialysis session the presence of significant levels of heparin was surprising. Upon heparinase treatment of these samples, the aPTT and the anti-Xa and IIa tests were restored to near normal levels. Our studies confirm the presence of residual heparin in pre-dialysis plasma samples obtained from ESRD patients. The Anti-IIa activity was greater pre-heparinase and it was not decreased to the same extent as Anti-Xa after heparinase digestion. These results suggest that heparin found in ESRD patient’s plasma is of high molecular weight origin with delayed clearance.
PSK and OK-432-Induced Immunomodulation of Inducible Nitric Oxide (NO) Synthase Gene Expression in Mouse Peritoneal Polymorphonuclear Leukocytes and NO-Mediated Cytotoxicity (2000)

We investigated whether PSK (a polysaccharide from the mycelia of Coriolus versicolor) or OK-432 (a streptococcal preparation) can up-regulate inducible nitric oxide synthase (iNOS) gene expression and nitric oxide (NO) production in mouse peritoneal polymorphonuclear leukocytes (PMNs). Six hrs after intraperitoneal injection of mice with PSK (2,500 microg/mouse) or OK-432 (100 microg/mouse), mouse peritoneal PMNs were restimulated with PSK (500 microg/ml) or OK-432 (10 microg/ml) plus 100 U/ml of mouse interferon-gamma (IFN-gamma) in vitro. Northern blot analysis showed strong synergism between both PSK and OK-432 and IFN-gamma for the induction of iNOS gene expression. NO production by PMNs was increased up to 20 microM (2 microM/10(6) PMNs/24 hrs) as measured by the Griess reagent method when PMNs were restimulated with PSK or OK-432 plus IFN-gamma for 24 hrs, although tumor cell killing was not detected. NO concentrations of more than 80 microM were required for P815 tumor cell killing. These results suggest that PMNs produce NO after stimulation with PSK or OK-432 in combination with IFN-gamma and may regulate the immune system in vivo, although the NO production induced by these agents is insufficient for tumor cell killing in vitro.
Slime-producing coagulase-negative staphylococci isolated from human eye infections (1993)

Some strains of coagulase-negative staphylococci produce an extracellular material, slime, which mediates adherence to foreign surfaces, such as indwelling biomedical devices. It is not known if slime is involved in adherence to human tissue. Coagulase-negative staphylococci are the most common members of normal ocular flora and cause many ocular infections, although the role of slime in these infections has not been studied.
CalliScan (2019)

In this work, a solution for handwriting text extraction from images with visual user assistance is proposed. Use of end-to-end systems that pipe together text detection and recognition is often awkward because the user cannot influence the detection stage. On the other hand, glossing over the word's regions to help system with text localization requires a manual job and can be unacceptable. This paper proposes a solution that gives visual cues to the user during a detection stage. These hints differ from traditional bounding boxes in two ways. Firstly, the found text is surrounded with polygonal bounding reflecting a possible complex nature of text blocks. Secondly, TextRadar scanning effect provides a non-overloaded camera view, helping the user to capture the most relevant part of the text on image on-the-fly. CalliScan works on-device and keeps the user's privacy. The evaluation study has shown that users need such a solution, but it is necessary to carefully handle the text layout complexity.
Low frequency noise reduction from building technical equipment: A case study (2008)

Mechanical equipment (fans, chillers, motors) produces airborne and structure-borne noise with a significant low frequency component. However, in many applications, mitigation of the low frequency noise requires implementation of significant mass barrier in combination with an air space. This work presents case studies on the use of a novel lightweight and thin acoustical material to mitigate low frequency noise from mechanical equipment. This advanced material, based on patented distributed absorber technology, was used to treat the metal housing of the mechanical equipment. The novel material effectively increased transmission loss of the metal housing below 300 Hz. The total noise reduction was 10-14 dB (A) with 5 dB improvement over typical flexible acoustical blankets below 300 Hz.
Automatic Recovery of Networks of Thin Structures (2015)

Applications, such as construction monitoring and planning for renovations, require the accurate recovery of existing conditions of structures. Many types of infrastructure are primarily comprised of arbitrarily-shaped thin structures (e.g., Truss bridges, steel frame buildings under construction, and transmission towers), which existing automatic modeling methods are incapable of handling. To address this issue, this paper presents an approach to automatically recognize and model beams, planes, and joints from a 3D point cloud containing a complex network of thin structures, and to recover their topology. In our approach, each beam is evolved from a seed by matching and aligning the cross section images. This growing algorithm can model beams with arbitrary cross sections. By performing the algorithm on a point connectivity graph, we distinguish beams from joints and improve the algorithm's robustness to closely spaced objects. In parallel, planes and joints are also extracted and modeled. The connectivity graph of these primitives allows for a compact, object-level understanding of the entire structure. We demonstrate the capability and robustness of our approach on both synthetic and real datasets.
<title>Circumference imaging for optical-based identification of cylindrical and conical objects</title> (1997)

Inspection and identification of cylindrical or conical shaped objects presents a unique challenge for a machine vision system. Due to the circular nature of the objects it is difficult to image the whole object using traditional area cameras and image capture methods. This work describes a unique technique to acquire a 2D image of the entire surface circumference of a cylindrical/conical shaped object. The specific application of this method is the identification of large caliber ammunition rounds in the field as they are transported between or within vehicles. The proposed method utilizes a line scan camera in combination with high speed image acquisition and processing hardware to acquire images from multiple cameras and generate a single, geometrically accurate, surface image. The primary steps involved are the capture of multiple images as the ammunition moves by on the conveyor followed by warping to correct for the distortion induced by the curved projectile surface. The individual images are then tiled together to form one 2D image of the complete circumference. Once this image has been formed an automatic identification algorithm begins the feature extraction and classification process.
DNA Site-Specific Resolution Systems (2014)

Resolution of multimeric forms of circular plasmids and chromosomes is mediated by site-specific recombination, an efficient and tightly controlled DNA breakage and joining reaction occurring at the level of determined DNA sequences. Site-specific recombinases, the enzymes that catalyze this type of reaction, fall into two families of proteins: the serine-recombinase and tyrosine-recombinase families. The chapter discusses the mechanisms that generate DNA multimers and their consequence on the segregational stability of bacterial replicons, and also provides an overview of the variety of site-specific resolution systems found on circular plasmids and chromosomes and their relationship to other recombination systems. It focuses on site-specific resolution systems of the serine-recombinase family, and plasmid and chromosome resolution systems of the tyrosine recombinase family. The topology of the recombination reaction catalyzed by other resolvases of the serine-recombinase family, such as the ParA protein of RP4/RK2, the resolvase of ISXc5, the Sin recombinase of Staphylococcus aureus, and the β recombinase of pSM19035, was found to be identical to that reported for the cointegrate resolution system of Tn3-family transposons. Studies on plasmid and transposon resolution systems provide fascinating examples of convergent evolution, in which structurally and biochemically unrelated molecular machines have been adapted to bring about functionally similar DNA rearrangements in an exquisitely controlled manner.
Radial piston engine (1978)

The invention concerns a ball joint between piston and guide shoe, which is used on a radial piston engine. A ball is supported in a ball cup of the piston, and the jacket surrounding the ball cup is provided with a holding part directed inwards for holding the ball. According to the invention a preformed steel ball is used as an independent component for this. The guide shoe has a foot, which has a second ball cup adjoining the ball and an oblique shoulder, which touches the holding part. The ball cup at the guide shoe has a lesser depth than the ball cup at the piston. The proposed construction has the advantage that a standard hardened steel ball, as commercially supplied, can be used. A ball surface of the greatest accuracy and surface quality is, therefore, available, which is nevertheless very cheap. The life expectancy should also be greater than for other well known constructions.
Dielectric and calorimetric studies of .beta.-cyclodextrin undecahydrate (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric and calorimetric studies of .beta.-cyclodextrin undecahydrateK. Pathmanathan, G. P. Johari, and J. A. RipmeesterCite this: J. Phys. Chem. 1989, 93, 21, 7491–7494Publication Date (Print):October 1, 1989Publication History Published online1 May 2002Published inissue 1 October 1989https://pubs.acs.org/doi/10.1021/j100358a045https://doi.org/10.1021/j100358a045research-articleACS PublicationsRequest reuse permissionsArticle Views98Altmetric-Citations24LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
Adhesion to vascular cell adhesion molecule 1 and fibronectin. Comparison of alpha 4 beta 1 (VLA-4) and alpha 4 beta 7 on the human B cell line JY. (1992)

Most mononuclear leukocytes and cell lines express the integrin alpha 4 beta 1 (VLA-4) heterodimer. In this study we have used Northern blotting and immunoprecipitation experiments to demonstrate that a B lymphoblastoid cell line (JY) expressed the integrin beta 7 subunit in association with alpha 4. These alpha 4 beta 7-positive JY cells bound poorly or not at all to VLA-4 ligands (soluble form of vascular cell adhesion molecule 1 (sVCAM-1) and the CS1 region of fibronectin). In contrast, a beta 1-positive variant of JY cells (selected to express a mixture of alpha 4 beta 1 and alpha 4 beta 7) bound avidly to VLA-4 ligands, and this binding was completely inhibitable by anti-alpha 4 and anti-beta 1 monoclonal antibodies. Thus, beta 1 expression appears to be a critically important component of VLA-4-mediated binding to its ligands. After either JY or JY-beta 1 cells were stimulated for 15 min with the phorbol ester 12-O-tetradecanoylphorbol-13-acetate, the majority of adhesion to VCAM or fibronectin remained alpha 4- and beta 1-dependent, but a low amount of adhesion to sVCAM-1 or fibronectin became alpha 4-dependent, beta 1-independent, thus suggesting a role for alpha 4 beta 7. In summary, we have found (i) that alpha 4 beta 7 makes little or no contribution to fibronectin or VCAM-1 binding on unstimulated JY cells, (ii) that alpha 4 beta 7 perhaps makes a minor contribution to ligand binding on 12-O-tetradecanoyl-phorbol-13-acetate-stimulated cells, and (iii) that alpha 4 beta 1 is the functionally dominant VCAM-1 and fibronectin receptor even when expressed in relatively low amounts compared to alpha 4 beta 7.