gebhart/patrepeval huggingface dataset:
Comparison of channel capacity for MIMO-DAS versus MIMO-CAS (2004)

This paper proposes a comparative study of MIMO channel capacity for both co-located antenna system (CAS) and distributed antenna system (DAS). In DAS we consider the channel model compassing the Rayleigh fading, log-normal shadowing fading and path loss. We find that different power allocation schemes and different locations of the mobile affect the channel capacity gain of MIMO-DAS significantly, and MIMO-DAS offers large capacity gain over the traditional MIMO-CAS, which is demonstrated in our simulations.
SYMPTOMATIC AND ASYMPTOMATIC ROTAVIRUS INFECTIONS IN HOSPITALIZED CHILDREN (1983)

During one year, 871 infants and children admitted to a Dutch paediatric ward were examined weekly for rotavirus. Rotavirus was detected in the stools of 64/129 (49.6%) children with diarrhoea and in 283/742 (38.1%) controls. The incidence of asymptomatic rotavirus excretors increased from 14.5% in infants 0 to 6 months of age to 65.8% in children of 6 years and over, a feature not yet reported. Possible explanations may be the methodology used, the age groups studied, the local hospital (and community) situation and the geographical location. Routine bacteriology revealed enteropathogens in 25.6% of the children with diarrhoea: Salmonellae in 20.9%, Campylobacter jejuni in 3.9%, Yersinia enterocolitica in 1.5%, Shigella sonnei in 0.8% and enteropathogenic E. coli in 0.8% of the patients.
Preparation of 7-Substituted Ginkgolide Derivatives:  Potent Platelet Activating Factor (PAF) Receptor Antagonists (2003)

Ginkgolides are structurally unique constituents of Ginkgo biloba extracts and are known antagonists of the platelet-activating factor (PAF) receptor. Ginkgolide C is 25-fold less potent than ginkgolide B as a PAF receptor antagonist, due to the presence of the 7beta-OH. Recently, we found that 7alpha-fluoro ginkgolide B was equipotent to ginkgolide B underlining the critical importance of the 7-position of ginkgolides for PAF receptor activity. Herein we describe the synthesis of a series of ginkgolide B derivatives with modifications at the 7-position and the pharmacological evaluation of these derivatives as assayed by cloned PAF receptors. In two cases nucleophilic attack on a 7beta-O-triflate ginkgolide B did not lead to the expected products, but gave rise to two unprecedented ginkgolide derivatives, one with a novel rearranged skeleton. Furthermore, standard reduction of 7alpha-azido ginkgolide B did not give the expected primary amine, but instead yielded alkylated amines depending on the solvent employed. Pharmacological testing with cloned PAF receptors showed that ginkgolides with 7alpha-substitutents had increased affinity compared to 7beta-substituents, in particular 7alpha-chloro ginkgolide B, the most potent nonaromatic ginkgolide derivative described to date with a K(i) value of 110 nM.
Weakly supervised classification of medical images (2012)

A weakly supervised image classification framework is presented in this paper. Given reference images marked by clinicians as relevant or irrelevant, we learn to automatically detect relevant patterns, i.e. patterns that only appear in relevant images. After training, relevant patterns are sought in unseen images in order to classify each image as relevant or irrelevant. No manual segmentations are required. Because manual segmentation of medical images is extremely time-consuming, existing classification algorithms are usually trained on limited reference datasets. With the proposed framework, much larger medical datasets are now available for training. The proposed approach has been successfully applied to diabetic retinopathy detection in a retinal image dataset (A <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">z</inf> =0.855).
[Variation pattern and its affecting factors of three-dimensional landscape in urban residential community of Shenyang]. (2011)

Based on the 1:10000 aerial photo in 1997 and the three QuickBird images in 2002, 2005, and 2008, and by using Barista software and GIS and RS techniques, the three-dimensional information of the residential community in Tiexi District of Shenyang was extracted, and the variation pattern of the three-dimensional landscape in the district during its reconstruction in 1997-2008 and related affecting factors were analyzed with the indices, ie. road density, greening rate, average building height, building height standard deviation, building coverage rate, floor area rate, building shape coefficient, population density, and per capita GDP. The results showed that in 1997-2008, the building area for industry decreased, that for commerce and other public affairs increased, and the area for residents, education, and medical cares basically remained stable. The building number, building coverage rate, and building shape coefficient decreased, while the floor area rate, average building height, height standard deviation, road density, and greening rate increased. Within the limited space of residential community, the containing capacity of population and economic activity increased, and the environment quality also improved to some extent. The variation degree of average building height increased, but the building energy consumption decreased. Population growth and economic development had positive correlations with floor area rate, road density, and greening rate, but negative correlation with building coverage rate.
Catalytic Activity and Selectivities of Metal Oxides and Pt/Al2O3 for NH3 Combustion (2015)

Catalytic activity and selectivities of metal oxides and Pt/Al2O3 were evaluated for the combustion of NH3, which is considered a carbon-free energy source. Catalytic NH3 combustion using 3d transition metal oxides for the stoichiometric NH3–O2 reaction showed the following order of activity: MnO2 > Co3O4 > CuO > Fe2O3 ≈ V2O5 > NiO. This order implies that the activity increases with decreasing oxygen bond energy of the metal oxides. CuO exhibited higher N2 selectivity than the other transition metal oxides.
sEMG-Based Hand Movement Regression by Prediction of Joint Angles With Recurrent Neural Networks (2021)

This work takes a step towards a better biosignal based hand gesture recognition by investigating the strategies for a reliable prediction of hand joint angles. Those strategies are especially important for medical applications in order to achieve e.g. good acceptance of hand prostheses among amputees. A recurrent neural network with a small footprint is deployed to estimate the joint positions from surface electromyography data measured at the forearm. As the predictions are expected to be not smooth, different post processing methods and a regularisation term for the objective function of the network are proposed. The experiments were conducted on publicly available databases. The results reveal that both post processing strategies and regularisation have a positive impact on the results with a maximal relative improvement of 6.13 %. On the one hand post processing strategies introduce an additional delay, consequently, the improvement is analysed in context of the caused delay. On the other hand the regularisation strategy does not cause a delay and can be adjusted easily to cope with different ground truths or compensate for certain problems in the hand tracking.
Design of antireflective nanostructures and optical coatings for next-generation multijunction photovoltaic devices (2014)

The successful development of multijunction photovoltaic devices with four or more subcells has placed additional importance on the design of high-quality broadband antireflection coatings. Antireflective nanostructures have shown promise for reducing reflection loss compared to the best thin-film interference coatings. However, material constraints make nanostructures difficult to integrate without introducing additional absorption or electrical losses. In this work, we compare the performance of various nanostructure configurations with that of an optimized multilayer antireflection coating. Transmission into a four-junction solar cell is computed for each antireflective design, and the corresponding cell efficiency is calculated. We find that the best performance is achieved with a hybrid configuration that combines nanostructures with a multilayer thin-film optical coating. This approach increases transmitted power into the top subcell by 1.3% over an optimal thin-film coating, corresponding to an increase of approximately 0.8% in the modeled cell efficiency.
Tissue Response to a Dental Cement Containing Butyl Cyanoacrylate (1969)

Tissue response to a mixture of butyl cyanoacrylate and calcium sulfate hemihydrate which polymerizes in the presence of saliva and forms a hard mass. In rat connective tissue, it produced a response which was comparable with the response to zinc oxide and eugenol.
An analog CCD reformatting memory employing two-dimensional charge transfer (1979)

An analog CCD reformatting memory has been designed and fabricated using an n-channel double level polysilicon gate process. This unique CCD structure employs two-dimensional charge transfer cells in a 32/spl times/32 element array which is accessed by means of integrated CCD demultiplexer and multiplexer structures resulting in greater dynamic range than observed in previous line-addressed designs. The design and operation of this structure are discussed, and examples of applications in analog signal processor architectures are described.
New Antihypertensive Tablets Formulation and HPLC Analyses Using New Generation Core Shell Column (2014)

Objectives: Formulation of triplet combined solid dosage film coated tablet containing amlodipine besylate (equivalent to 5 mg amlodipine), hydrochlorothiazide (12.5 mg) and losartan potassium (50 mg) for the treatment of severe hypertension. Development and validated of a simple, fast, precise, selective and accurate HPLC method for the simultaneous determination of amlodipine besylate, hydrochlorothiazide and losartan potassium in the tablets. Methods: The formulation of the tablets was carried out as per standard protocols. The various steps involve in formulation were dispensing of raw materials, sieving, preparation of granulating solvent, mixing, granulation, drying (In FBD), lubrication, compression and coating. The separation of these three drugs was achieved on a Sun Shell C 8 column (150 mm x 4.6 mm, 2.6 μm) with phosphate buffer-acetonitrile (70:30% v/v) as mobile phase at 1.0 mL/min flow rate and 230 nm detection. Results and Conclusion: The physical parameters of tablets were satisfactory with average weight deviation from 3.23 to 3.29%, friability 0.04%, disintegration time 8.3 minutes, average hardness 85.43N and thickness from 3.92 to 4.01 mm. The assay was found to be 99.89%, 99.99% and 99.97% of amlodipine, hydrochlorothiazide and losartan potassium, respectively. The dissolution was found to be 98.8 to 99.70%, 97.85 to 98.95% and 97.98 to 99.99% of amlodipine, hydrochlorothiazide and losartan potassium, respectively. The uniformity of content was 99.85 to 99.99% and 99.60 to 99.99% of amlodipine and hydrochlorothiazide, respectively. The retention times observed were to be 7.338, 2.097 and 10.675 minutes for amlodipine besylate, hydrochlorothiazide and losartan potassium, respectively. The method was statistically validated for linearity, recovery, limit of detection, limit of quantification, accuracy, precision, robustness, stability of drugs in pure form and in presence of matrices and forced degradation study. The method was successfully applied for analysis of combined dose tablet.
Kinetics and Substituent Effects in Electrophilic Aromatic Substitution. II.1 Tritylation of Catechol and its Monoethers2,3 (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics and Substituent Effects in Electrophilic Aromatic Substitution. II.1 Tritylation of Catechol and its Monoethers2,3Néstor Barroeta, Gabriel Chuchani, and Jacob ZabickyCite this: J. Org. Chem. 1966, 31, 7, 2330–2333Publication Date (Print):July 1, 1966Publication History Published online1 May 2002Published inissue 1 July 1966https://pubs.acs.org/doi/10.1021/jo01345a059https://doi.org/10.1021/jo01345a059research-articleACS PublicationsRequest reuse permissionsArticle Views213Altmetric-Citations7LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Improved breakdown model for estimating dark count rate in avalanche photodiodes with InP and InAlAs multiplication layers (2006)

We present an improved method for estimating the dark count rate of single-photon-sensitive avalanche photodiodes (SPADs) with either InP or InAlAs multiplication layers. Our simulation of junction breakdown probability can easily accommodate arbitrary electric field profiles and APD bias conditions. In combination with local models of dark carrier generation, our technique can provide more realistic estimates of dark count rate than are obtained by multiplying the primary dark current by a single junction breakdown probability, or by assuming constant electric fields in the multiplication layer. Our method can assist in the design of SPADs for demanding laser radar applications.
Normal and osteopenic bone‐derived osteoblast response to a biomimetic gelatin–calcium phosphate bone cement (2006)

We have recently developed a new calcium phosphate bone cement enriched with gelatin (GEL-CP), which exhibits improved mechanical properties with respect to the control cement (C-CP). In a previous study, we demonstrated the good response of osteoblast-like cells to the new biomimetic bone cement. Herein, we extend the investigation to primary culture of osteoblasts derived from healthy and pathological bones. Osteoblasts derived from normal (N-OB) and osteopenic (O-OB) sheep bones were cultured on samples of GEL-CP, and their behavior was compared with that of cells cultured on C-CP as control. Cell morphology, proliferation, and differentiation were evaluated at 3 and 7 days. SEM analysis revealed that both N-OB and O-OB showed a normal morphology when cultured on GEL-CP. Biological tests demonstrated that the gelatin-enriched cement improves osteoblasts' activity and differentiation of O-OB cultures, with respect to the control samples. The data indicate that the new composite cement positively stimulates alkaline phosphatase activity, collagen type I, and osteocalcin production, not only in N-OB, but also in O-OB culture. The improvement due to the presence of gelatin suggests that the biomimetic composite material could be successfully applied as bone substitute also in the presence of osteopenic bone.
Synthesis of pyrano isoxazoline/isoxazole annulated coumarins via intramolecular nitrile oxide cycloaddition and their cytotoxicity (2017)

An efficient and straight forward procedure for the syntheses of isoxazoline/isoxazole fused coumarin analogues 7a–7g and 8a–8g from the corresponding 7-O-allyloxy coumarin oximes 5a–5g and 7-O-propargyloxy coumarin oximes 6a–6g is presented. High yields and simple experimental procedures are important features of this methodology. This method is useful for the construction of many biologically active fused heterocycles. The structures of synthesized compounds are established on the basis of IR, NMR, and MS data. The products were tested for in vitro cytotoxic activity against three human cancer cell lines. All tested compounds demonstrated high cytotoxic activity.
Three-dimensional alignment of functional and morphological tomograms. (1990)

A method has been developed to create corresponding brain slices from morphological [CT, magnetic resonance (MR)] and functional [positron emission tomography (PET), single photon emission computed tomography] tomographic studies in individual patients. It does not require special headholders or definition of specific landmarks and is fully retrospective. Three-dimensional image registration in corresponding orientation is achieved by linear interpolation of original slices and a variety of interactively controlled video display options. These include simultaneous display of multiple slices and brain cuts in all three dimensions for comparison of positioning. Brain contours in one imaging modality may be enhanced by appropriate filtering and superimposed onto reference images of another modality. Matching accuracy depends on image resolution; misalignment of 4 mm was detected unambiguously in sample studies (fluoro-2-deoxy-D-glucose PET matched with MR). The technique is equally well applicable to normals and to patients with structural brain lesions. Additional options for shaded surface display enhance the power to identify neuroanatomical structures in functional image analysis. As demonstrated in the example of MR-guided PET, this modeling procedure can be successfully used for identification of brain structures on functional images, even in patients with pathologically altered brain morphology.
What I learned in Europe . . . (2007)

ADVERTISEMENT RETURN TO ISSUEPREVCORRESPONDENCENEXTWhat I learned in Europe . . .Jerald L. SchnoorCite this: Environ. Sci. Technol. 2007, 41, 3, 667Publication Date (Web):February 1, 2007Publication History Published online1 February 2007Published inissue 1 February 2007https://pubs.acs.org/doi/10.1021/es072455vhttps://doi.org/10.1021/es072455vnewsACS Publications. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views156Altmetric-Citations-LEARN 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 PDF (55 KB) Get e-Alertsclose Get e-Alerts
Identification of epithelial and myeloid-specific DNA elements regulating MRP14 gene transcription (1999)

Macrophage migration inhibition factor-related protein 14 (MRP14) is a Ca2+-binding protein of the S-100 family highly abundant in myelomonocytic and epithelial cells. The expression pattern is restricted to myeloid and epithelial cells and therefore the MRP14 gene is ideally suited to study the regulation of gene expression in these cells. We characterized the human MRP14 promoter by using the chloramphenicol acetyltransferase reporter assay system. The analysis was performed in epithelial (TR146) and myeloid (HL-60) cells, and we were successful in mapping positive and negative regulatory elements. The region -114/-419 contains strong myeloid-specific regulatory elements, whereas the domain -600/-1000 enhances the MRP14 transcription in epithelial cells. The sequence -462/-600 accommodates a regulatory element that enhances the promoter activity in both myeloid and epithelial cells. Regions -114/-419 and -1000/-4500 reduce the expression of MRP14 only in epithelial cells, whereas the domains -419/-462 and -4500/-6500 contain down-regulating elements in both, epithelial and myeloid cells. The presented data demonstrate that transcription of the human MRP14 gene is regulated in a complex manner enabling the precise control of the MRP14 level in epithelial and myeloid cells.
Thermal formation of serine octamer ions (2004)

Vigorous evaporation of aqueous serine solutions yields abundant protonated serine octamer ions. So does pyrolysis of L-serine crystals in a corona discharge.
Macromol. Mater. Eng. 7/2016 (2016)

Back Cover: An easy-to-use test platform toward the rapid diagnosis of many life-threating diseases was developed. DNA was isolated from the mixture of BSA+DNA using fibrous commodity polystyrene, which was extremely cheap and can be readily electrospun under ambient conditions. Surface modification with Au nanoparticles improved the performance of the fibrous membrane. Further details can be found in the article by Tuğba Isık, Nesrin Horzum,* Ü. Hakan Yıldız, Bo Liedberg, and Mustafa M. Demir* on page 827.
Multi-physics simulation and reliability analysis for LED luminaires under step stress accelerated degradation test (2012)

In this paper, the 3D model of a LED luminaire is built using the software Pro/Engineer and then the model is transferred to ANSYS Workbench platform where the LED luminaire under the temperature and humidity conditions during step stress accelerated degradation test (SSADT) is simulated. The simulation results of temperature distribution, humidity distribution and stress distribution of the model at three levels of temperature (45°C, 65°C, 85°C) and 60% RH (Relative Humidity) are acquired using multi-physics approach. In the post-processing of temperature data, combining Yamaoshi?s optical power empirial formula of LED degradation with the junction temperature in simulation, the optical decay curves at each stage of the test are obtained. Then, the long-term life test (LTLT) at room temperature (25°C) and SSADT at three levels of temperature are performed to illustrate the validity of simulation. The lumen maintenance of 3 LED luminaires by LTLT and 5 samples by SSADT are analyzed to evaluate the luminous flux, optical decay rate and reliability under different working and ambient conditions. Finally, a comparison is made between the results of experiment and simulation. It is shown that the simulation results agree well with optical decay curves from the test, which indicates that the method can be used to predict the optical decay of LED luminaires.
Reaction of Singlet-Excited 2,3-Diazabicyclo[2.2.2]oct-2-ene and tert-Butoxyl Radicals with Aryl-Substituted Benzofuranones (2006)

5,7-Di-tert-butyl-3-aryl-3H-benzofuran-2-ones are lactones with potential antioxidant activity, owing to their abstractable benzylic C-H hydrogens. The fluorescence quenching of the azoalkane 2,3-diazabicyclo[2.2.2]oct-2-ene (DBO), an established probe for the hydrogen-donor propensity of chain-breaking antioxidants, was investigated for 16 aryl-substituted benzofuranone derivatives [m,m-(CF3)2, p-CN, m-CN, p-CF3, p-COOCH3, m-CF3, p-Cl, p-F, H, m-CH3, p-CH3, m,p-(CH3)2, p-OCH3, o-CH3, o-CF3, o,m-(CH3)2]. Analysis of the rate data in terms of a linear free energy relationship yielded a reaction constant of rho = +0.35. This implies that n,pi*-excited DBO acts as nucleophilic species. In contrast, hydrogen abstraction of tert-butoxyl radicals from the benzofuranones was accelerated by electron-donating substituents (rho = -0.23), in conformity with the electrophilic character of oxygen-centered alkoxyl radicals. Possible implications for the optimization of the hydrogen-donor propensity of antioxidants through structural variation are discussed.