gebhart/patrepeval huggingface dataset:
Complex Formation of an Amphiphilic Benzothiazolium Styryl Chromoionophore with Metal Cations in a Monolayer at the Air-Water Interface (1995)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplex Formation of an Amphiphilic Benzothiazolium Styryl Chromoionophore with Metal Cations in a Monolayer at the Air-Water InterfaceIgor K. Lednev and Michael C. PettyCite this: J. Phys. Chem. 1995, 99, 12, 4176–4180Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published inissue 1 March 1995https://doi.org/10.1021/j100012a044RIGHTS & PERMISSIONSArticle Views46Altmetric-Citations19LEARN 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 InReddit PDF (514 KB) Get e-Alerts
Phrase Localization Without Paired Training Examples (2019)

Localizing phrases in images is an important part of image understanding and can be useful in many applications that require mappings between textual and visual information. Existing work attempts to learn these mappings from examples of phrase-image region correspondences (strong supervision) or from phrase-image pairs (weak supervision). We postulate that such paired annotations are unnecessary, and propose the first method for the phrase localization problem where neither training procedure nor paired, task-specific data is required. Our method is simple but effective: we use off-the-shelf approaches to detect objects, scenes and colours in images, and explore different approaches to measure semantic similarity between the categories of detected visual elements and words in phrases. Experiments on two well-known phrase localization datasets show that this approach surpasses all weakly supervised methods by a large margin and performs very competitively to strongly supervised methods, and can thus be considered a strong baseline to the task. The non-paired nature of our method makes it applicable to any domain and where no paired phrase localization annotation is available.
LOURDES M. CHEHAIBAR, DIRECTORA DEL IISUE (2010)

LOURDES MARGARITA CHEHAIBAR NADER FUE DESIGNADA POR LA JUNTA DE GOBIERNO DE LA UNAM COMO DIRECTORA DEL INSTITUTO DE INVESTIGACIONES SOBRE LA UNIVERSIDAD Y LA EDUCACION (IISUE), PARA UN SEGUNDO PERIODO (2010-2014). LA TITULAR DE LA REFERIDA ENTIDAD ACADEMICA COMENTO QUE, DENTRO DE SU PLAN DE TRABAJO, DESTACA LA INVESTIGACION. POR ELLO, SE BUSCARA LA CONSTRUCCION DEFINITIVA DE LAS LINEAS DEL IISUE PARA QUE, DESDE SUS FORTALEZAS, MANTENGA E INCREMENTE EL RIGOR DE SUS APORTACIONES CONCEPTUALES, Y AMPLIE SU ATENCION A LA AGENDA NACIONAL E INTERNACIONAL. ADEMAS, DIJO, ES NECESARIO POTENCIAR ACCIONES QUE PERMITAN OBTENER RIGUROSOS NIVELES PARA EL DESARROLLO DE LAS AREAS DE APOYO AL AVANCE DEL TRABAJO ACADEMICO, FUNCIONES CENTRALES PARA LA VIDA DEL INSTITUTO: LA BIBLIOTECA, BANCOS DE INFORMACION, LAS COORDINACIONES EDITORIAL Y DE COMPUTO. EL ARCHIVO HISTORICO DE LA UNAM (AHUNAM), PERTENECIENTE AL IISUE, PROSIGUIO, DEBE CONTINUAR E INCREMENTAR LAS TAREAS QUE CONSOLIDEN SU QUEHACER COTIDIANO Y SU LUGAR COMO REFERENTE EN EL AMBITO DE SU COMPETENCIA, ASI COMO MARCAR NUEVOS HORIZONTES Y PROYECTOS, E INCURSIONAR EN ESPACIOS QUE PERMITAN UNA MAYOR DIFUSION DE SU FUNCION Y DE SUS ACERVOS. EN SU OPORTUNIDAD, ESTELA MORALES CAMPOS, COORDINADORA DE HUMANIDADES, CONSIDERO QUE EL INSTITUTO ES UNA INSTANCIA JOVEN Y, POR ELLO, DEBE CONTINUAR SU ETAPA DE CRECIMIENTO. ASIMISMO, INSTO A SU COMUNIDAD A SUMARSE AL PROGRAMA DE TRABAJO DE LA DIRECTORA. USTEDES, AFIRMO, SON PARTE IMPORTANTE PARA QUE LA ENTIDAD DE PASOS FIRMES. SE ANOTAN DATOS DE LA TRAYECTORIA DE LA RECIEN DESIGNADA TITULAR.
Rhinocerebral Mucormycosis in a Diabetic Patient (1993)

Rhinocerebral mucormycosis, is a life threatening fungal infection, mainly affect patients with diabetic ketoacidosis or are immunocompromised. We present a 66-year-old male with poorly controlled diabetes with rhinocerebral mucormycosis. The diagnosis was confirmed by the biopsy of the infected tissue after external ethmoidectomy and medial maxillectomy. The patient was successfully treated with repeated radical surgical debridement, Amphotericin B (total dose of 2 gm), and the control of blood gluoose levels.
Multiple furunculoid myiasis on the scalp of a child (2007)

Cutaneous myiasis is easy to diagnose and treat if clinicians are aware of the condition. Because of widespread travel, physicians may encounter this infestation in patients living in geographical regions where the condition is rare. A child is presented with cutaneous myiasis that presented as furuncle-like nodules on the scalp. The larvae were identified as a stage of the bluebottle-like fly, Dermatobia hominis.
InP-based reversed-mesa ridge-waveguide structure for high-performance long-wavelength laser diodes (1997)

A novel structure for an InP-based ridge-waveguide (RWG) laser is demonstrated. It has a reverse-trapezoid-ridge shape which offers reduced threshold current and smaller electrical and thermal resistances over the conventional vertical-mesa (VM) RWG devices. We found this new RWG laser quite suitable for wide-temperature-range and high-power operations. 1.3-1.55-/spl mu/m wavelength strained InGaAsP-InP multiple quantum-well (MQW) lasers were demonstrated with the new ridge structure, which showed sufficient lasing behavior such as high-temperature lasing up to 165/spl deg/C and a high light output over 300 mW. This simple and high-performance laser structure was also applied for integrated lasers with other functional elements such as an absorption-type modulator or a beam-expander waveguide lens. To achieve low-threshold current operation in RWG lasers, suppression of the lateral-current spreading is important. We proposed a new method to effectively reduce this lateral diffusion current by using a doped active region with n-type dopant. Combined by the reduced transparency carrier density in the n-doped active region, this leads to a very low-threshold current of less than 2.2 mA for a coated 200-/spl mu/m-long cavity device, which is comparable to those of recent advanced same-material buried-heterostructure (BH) lasers. These excellent lasing properties, along with the sufficient device reliability under strict environmental conditions, make this reversed-mesa (RM) RWG a promising candidate for the widespread use of low-cost long-wavelength light sources.
The role of spin polarization and dynamic correlation in singlet-triplet gap inversion of heptazine derivatives (2023)

The new generation of proposed light-emitting molecules for OLEDs has raised a considerable research interest due to its exceptional feature-a negative singlet-triplet (ST) gap violating the Hund's multiplicity rule in the excited S1 and T1 states. We investigate the role of spin polarization in the mechanism of ST gap inversion. Spin polarization is associated with doubly excited determinants of certain types, whose presence in the wavefunction expansion favors the energy of the singlet state more than that of the triplet. Using a perturbation theory-based model for spin polarization, we propose a simple descriptor for prescreening of candidate molecules with negative ST gaps and prove its usefulness for heptazine-type molecules. Numerical results show that the quantitative effect of spin polarization is approximately inverse-proportional to the HOMO-LUMO exchange integral. Comparison of single- and multireference coupled- cluster predictions of ST gaps shows that the former methods provide good accuracy by correctly balancing the effects of doubly excited determinants and dynamic correlation. We also show that accurate ST gaps may be obtained using a complete active space model supplemented with dynamic correlation from multireference adiabatic connection theory.
Anomalous resonance enhanced quasielastic light scattering of cytochrome-c (1987)

We have measured anomalously large resonance enhanced quasi-elastic light scattering from reduced cytochrome-c using excitation frequencies throughout the ‘‘Soret’’ absorption band. The resonance enhancement is clearly observed in the perpendicularly polarized scattering. The parallel polarized scattering is consistent with a depolarization ratio near 1/8 for the resonant scattering from the heme group. In addition, the parallel data contain the expected large nonresonant scattering due to the globular protein material and solvent. Both of these contributions are extracted directly from the data and agree with other, independent, experimental observations. Absolute cross section measurements reveal that the resonance Rayleigh scattering is three times larger than predictions based on Kramers–Kronig dispersion theory. Interference with nonresonant background states can lead to increased scattering intensity, but is incompatible with the experimental excitation profile. Previous studies of the absorption line shape at low temperature indicate that very low frequency modes are not significantly coupled to the Soret excitation. Thus, very low frequency, nonresolved resonance Raman processes are not a likely explanation for the observed excess Rayleigh scattering. A distribution in the electronic relaxation of the resonant state can possibly account for some of the discrepancy.
Highly Diastereoselective Zn/SnCl2-Mediated gem-Difluoroallylation of Chiral Hydrazones (2008)

gem-Difuoroallylic zinc reacts with chiral hydrazones 1 in the presence of SnCl2 to afford the versatile and chiral fluorinated building blocks, gem-difluorohomoallylic amines, in good yields and high diastereoselectivities.
All-optical atomic clock on a chip: progress report (2005)

We report on progress in the development of atomic clocks based on an opto-electronic oscillator stabilized with an atomic cell. For a demonstration setup, the short term (1 second) stability of 5/spl middot/10/sup -10/ and the long term (100 seconds) stability of 6/spl middot/10/sup -11/ are reported. Also discussed is the physics of a low power electro-optical modulator utilizing whispering gallery modes in a segnetoelectric disk. This modulator is an important element of the designed clock. It is shown that our approach allows for multi-function application of the designed clocks, that can also operate in the magnetometer regime.
Can computer-aided diagnosis assist in the identification of prostate cancer on prostate MRI? a multi-center, multi-reader investigation (2018)

For prostate cancer detection on prostate multiparametric MRI (mpMRI), the Prostate Imaging-Reporting and Data System version 2 (PI-RADSv2) and computer-aided diagnosis (CAD) systems aim to widely improve standardization across radiologists and centers. Our goal was to evaluate CAD assistance in prostate cancer detection compared with conventional mpMRI interpretation in a diverse dataset acquired from five institutions tested by nine readers of varying experience levels, in total representing 14 globally spread institutions. Index lesion sensitivities of mpMRI-alone were 79% (whole prostate (WP)), 84% (peripheral zone (PZ)), 71% (transition zone (TZ)), similar to CAD at 76% (WP, p=0.39), 77% (PZ, p=0.07), 79% (TZ, p=0.15). Greatest CAD benefit was in TZ for moderately-experienced readers at PI-RADSv2 <3 (84% vs mpMRI-alone 67%, p=0.055). Detection agreement was unchanged but CAD-assisted read times improved (4.6 vs 3.4 minutes, p<0.001). At PI-RADSv2 ≥ 3, CAD improved patient-level specificity (72%) compared to mpMRI-alone (45%, p<0.001). PI-RADSv2 and CAD-assisted mpMRI interpretations have similar sensitivities across multiple sites and readers while CAD has potential to improve specificity and moderately-experienced radiologists' detection of more difficult tumors in the center of the gland. The multi-institutional evidence provided is essential to future prostate MRI and CAD development.
1,4,10,19,25,41,55,60,67,69-Decakis(trifluoromethyl)-1,4,10,19,25,41,55,60,67,69-decahydro(C70-D5h)[5,6]fullerene (2007)

The title compound, C80F30, is one of seven isomers of C70(CF3)10 that have been isolated. The C2-symmetry fullerene mol­ecule has an idealized D5h C70 core with the ten CF3 groups arranged on a `pole-to-pole' para-meta-para-para-para-para-para-meta-para (pmp5mp) ribbon of edge-sharing C6(CF3)2 hexa­gons. There are no cage Csp3—Csp3 bonds. There are intra­molecular F⋯F contacts between pairs of CF3 groups on the same hexa­gon that range from 2.560 (3) to 2.876 (3) Å. Two CF3 groups are disordered with almost equal occupancies.
Allergic airway inflammation is exacerbated during acute influenza infection and correlates with increased allergen presentation and recruitment of allergen‐specific T‐helper type 2 cells (2004)

In addition to virus-mediated damage to the lung and airways, influenza viral infection can also enhance unrelated local allergic responses.
Lichten Runner-Up Paper: Experimental and Computational Investigation of a UAV-Scale Cycloidal Rotor in Forward Flight (2021)

This paper investigates the unsteady force production on a UAV scale cycloidal rotor blade undergoing forward flight motion via experiments in a water tunnel as well as an unsteady aerodynamic model and a computational fluid dynamics (CFD) model. While time-averaged forces can shed light on cycloidal rotor performance, it is important to be able to accurately measure and predict the time history of forces on the blade in order to understand the highly nonlinear and unsteady fluid dynamics on a cycloidal rotor blade resulting from high-amplitude blade pitch kinematics, unsteady flow curvature effects and complex inflow distribution. Towards this, the instantaneous radial and tangential forces on a cycloidal rotor blade were measured in a water tunnel using a custom-built test-rig over a range of Reynolds numbers (Re = 30,000 – 100,000) while varying the rotor rotational speed, flow speed, blade cyclic pitch amplitude and pitch offset. The advance ratio was varied from 0 to 0.44. An unsteady aerodynamic model of the cycloidal rotor was developed and systematically validated with instantaneous force data from the water tunnel experiments. Once validated, the analytical model is utilized to explain various trends observed during the experimental study. To further investigate the forward speed aerodynamics, a 2-D CFD solver tailored towards the unique kinematics of cycloidal rotor is utilized. It is observed that the lift generated by cycloidal rotor increases continuously up to ±45° pitch amplitude for a low Reynolds number (Re = 29,000). However, this monotonic increase in lift plateaus at a pitch amplitude of ±30° for high Reynolds number (Re = 87,000). Moreover, a significant asymmetry was observed in the forces generated between the frontal half and rear half of the cycloidal rotor because of the dynamic virtual camber effect. A cycloidal rotor needs a phase offset angle in the vicinity of 90° to produce both a positive lift and propulsive force in forward flight. Additionally, this propulsive force was observed to decrease with increasing advance ratio due to a reduced effective angle of attack at all points along the azimuth. Moreover, at higher advance ratios the rotor begins extracting power from the flow over a large region at the frontal half of the cycle.
Insulin Activates the Hepatitis B Virus X Gene through the Activating Protein-1 Binding Site in HepG2 Cells (1998)

Insulin stimulates cellular oncogenic activators such as c-jun, c-fos, and c-myc; and hepatitis B virus (HBV) X, a viral transactivator, is known to induce liver cancer in transgenic mice. In this respect, the effect of insulin on the expression of HBx protein was investigated in HepG2 cells. Insulin-stimulated transcription from the HBV X promoter in a dose-dependent manner was assessed by chloramphenicol acetyltransferase (CAT) assay. A mutation preventing AP-1 binding to the E element abolished the activation of the HBV X promoter by insulin. In addition, insulin stimulated the minimal thymidine kinase (tk) gene promoter activity through both the HBV E element and the consensus AP-1 binding site in HepG2 cells. An electrophoretic mobility shift assay (EMSA) using insulin-treated HepG2 nuclear extracts showed that insulin actually enhanced the binding of nuclear proteins to the HBV E element as well as to the consensus AP-1 binding site. Both HBV E and AP-1 oligonucleotides were effective competitors for this binding. These results showed that insulin elevated the expression of HBx protein through the AP-1 binding site of HBV EnI. We suggest that insulin can augment the role of HBx in the development of hepatocellular carcinoma (HCC) in HBV-infected liver, probably through interaction with other cellular oncogenes.
Detecting Dissociation Dynamics of Phosphorus Molecular Ions by Atom Probe Tomography (2020)

Dissociation processes involving phosphorus cations were investigated during laser-assisted atom probe tomography of crystalline indium phosphide (InP). This technique not only allows the formation of medium-sized phosphorus cations by means of femtosecond laser pulses under ultrahigh vacuum and high electric field conditions but also allows one to study the time-resolved dissociation dynamics. Data reveal the formation of cations up to P232+ and their subsequent dissociation into two smaller Pk+ cations (k > 2). The use of a time- and position-sensitive detector combined with numerical calculations provided information related to the molecule orientation, decay time, and kinetic energy release during dissociation phenomena. Results suggest that the dissociation processes are most likely due to the emission of Pk2+ cations in excited states and their subsequent decay in low field regions during their flight toward the detector. This study provides operative guidelines to obtain information on dissociation processes using a tomographic atom probe as a reaction microscope and indicates the current capabilities and limitations of such an approach.
Groove Gap Waveguide Filter Based on Horizontally Polarized Resonators for V-Band Applications (2020)

In this article, resonators based on air-filled rectangular cavity consisting of one perfect magnetic conductor (PMC) wall and the rest of walls as the perfect electric conductor (PEC) are proposed. The proposed cavity can be engraved in the top or bottom metal plate of a gap waveguide structure, and the PMC wall is realized by the periodic metallic pins located within the gap waveguide geometry. The resonant frequency and electromagnetic (EM) field distribution of the cavity are investigated, and it is shown that the electric field is horizontally polarized with respect to the wave propagation direction. Two bandpass filters are designed by inserting the proposed cavity in the cutoff region of the gap waveguide, on the top and bottom plates. In the latter case, all pins are the same, and the cavities and coupling structure are easily implemented by engraving the top plate. Therefore, by using this concept, a common pin plate can be used to implement different passive millimeter-wave devices. For instance, three different filters working at 60, 65, and 70 GHz with a common bottom pin plate are designed and fabricated. The measured results show a minimum insertion loss of 1.4, 1.1, and 1.1 dB with 0.83%, 1.4%, and 1.8% fractional bandwidth for the three bandpass filter designs, respectively, with aluminum as metal.
Genetic and Phenotypically Heterogeneity of Patients with Congenital Neutropenia. (2005)

Abstract Severe congenital neutropenia (CN) is a general term for a group of disorders characterized by extremely low blood neutrophil counts (ANC &amp;lt; 0.5 x 109 ), early stage maturation arrest of myelopoiesis, and recurrent bacterial infections. More than 90% of CN patients respond to daily G-CSF treatment with a sustained neutrophil increase associated with a significant reduction of infections and improved quality of life. However, prolonged survival unmasks an increased risk of leukemic transformation in some, but not all, subcategories of CN patients. The Severe Chronic Neutropenia International Registry (SCNIR) has collected longitudinal data on on more than 400 patients with various causes of CN. This unique resource allows classification of different subtypes of CN and estimation of the relative frequency of these conditions. Our new classification scheme is as follows: By inheritance - autosomal dominant severe congenital neutropenia (ADCN), autosomal recessive (ARCN, Kostmann syndrome), sporadic CN. By genetic aberrations - ELA2 related CN, SBDS related CN-(Shwachman-Diamond syndrome), G 4.5 on Xq28related neutropenia (Barth syndrome), CXCR4 related neutropenia (myelokathexis and WHIM syndrome). By clinical phenotype - associated symptoms (e. g. metabolic disorders, such as Shwachman-Diamond syndrome, glycogen storage disease 1b, Barth syndrome), G-CSF responsive or non-responsive CN, with or without G-CSF receptor mutations, with or without osteoporosis, or dysplastic features (e. g. organ abnormalities). By ethnic origin - e.g. CN in consanguineous Kurdish families, recessive neutropenia in Swedish family (Kostmann syndrome). Recent research and the work of the SCNIR now permit a much improved classification of CN. The identification of subtypes of CN, their distinctive risks of malignant transformation, and their responses to treatment has contributed substantially to our general understanding of the problem of neutropenia. This knowledge also now allows clinicians to give patients and families much improved prognostic information and better guidelines for therapy.
Local numerical modelling of ultrasonic guided waves in linear and nonlinear media (2017)

Nonlinear ultrasonic techniques provide improved damage sensitivity compared to linear approaches. The combination of attractive properties of guided waves, such as Lamb waves, with unique features of higher harmonic generation provides great potential for characterization of incipient damage, particularly in plate-like structures. Nonlinear ultrasonic structural health monitoring techniques use interrogation signals at frequencies other than the excitation frequency to detect changes in structural integrity. Signal processing techniques used in non-destructive evaluation are frequently supported by modeling and numerical simulations in order to facilitate problem solution. This paper discusses known and newly-developed local computational strategies for simulating elastic waves, and attempts characterization of their numerical properties in the context of linear and nonlinear media. A hybrid numerical approach combining advantages of the Local Interaction Simulation Approach (LISA) and Cellular Automata for Elastodynamics (CAFE) is proposed for unique treatment of arbitrary strain-stress relations. The iteration equations of the method are derived directly from physical principles employing stress and displacement continuity, leading to an accurate description of the propagation in arbitrarily complex media. Numerical analysis of guided wave propagation, based on the newly developed hybrid approach, is presented and discussed in the paper for linear and nonlinear media. Comparisons to Finite Elements (FE) are also discussed.