gebhart/patrepeval huggingface dataset:
[Cu2O]2+ Active Site Formation in Cu–ZSM-5: Geometric and Electronic Structure Requirements for N2O Activation (2014)

Understanding the formation mechanism of the [Cu2O](2+) active site in Cu-ZSM-5 is important for the design of efficient catalysts to selectively convert methane to methanol and related value-added chemicals and for N2O decomposition. Spectroscopically validated DFT calculations are used here to evaluate the thermodynamic and kinetic requirements for formation of [Cu2O](2+) active sites from the reaction between binuclear Cu(I) sites and N2O in the 10-membered rings Cu-ZSM-5. Thermodynamically, the most stable Cu(I) center prefers bidentate coordination with a close to linear bite angle. This binuclear Cu(I) site reacts with N2O to generate the experimentally observed [Cu2O](2+) site. Kinetically, the reaction coordinate was evaluated for two representative binuclear Cu(I) sites. When the Cu-Cu distance is sufficiently short (<4.2 Å), N2O can bind in a "bridged" μ-1,1-O fashion and the oxo-transfer reaction is calculated to proceed with a low activation energy barrier (2 kcal/mol). This is in good agreement with the experimental Ea for N2O activation (2.5 ± 0.5 kcal/mol). However, when the Cu-Cu distance is long (>5.0 Å), N2O binds in a "terminal" η(1)-O fashion to a single Cu(I) site of the dimer and the resulting E(a) for N2O activation is significantly higher (16 kcal/mol). Therefore, bridging N2O between two Cu(I) centers is necessary for its efficient two-electron activation in [Cu2O](2+) active site formation. In nature, this N2O reduction reaction is catalyzed by a tetranuclear CuZ cluster that has a higher E(a). The lower E(a) for Cu-ZSM-5 is attributed to the larger thermodynamic driving force resulting from formation of strong Cu(II)-oxo bonds in the ZSM-5 framework.
The Faint Object Spectrograph for the 2.5-m Isaac Newton Telescope (1987)

The Faint Object Spectrograph (FOS) is a highly efficient fixed format spectrograph for the 2.5-m Isaac Newton Telescope. It uses a CCD detector for low resolution (15–20 Å fwhm) spectrophotometry over the spectral range 4000–10 500 Å. The overall efficiency, including atmosphere and telescope absorption is greater than 11 per cent at 7000 Å and a zenith distance of 27.5°. An outline of the mechanical and electronic arrangement of FOS is given, together with a discussion of its modes of operation and facilities. Data reduction software which has been written specifically for FOS is described. Commissioning tests on the spectrograph have been carried out during 1984 and 1985 and the performance of the instrument is assessed.
Adapting the Clean Deconvolver and Clean Detector to Doppler Uncertainty (2007)

This paper extends the author's work on the CLEAN algorithm. In the previous paper the author develops the CLEAN Deconvolver and CLEAN Detector that each has their optimality claims. In this paper the CLEAN Deconvolver and the CLEAN Detector are extended to the situation of unknown Doppler. Results presented show that good performance can still be achieved when the Doppler is unknown.
The Electronic Structure of (Diiminopyridine)cobalt(I) Complexes (2004)

Abstract DFT calculations show that square‐planar LCo I R complexes of a diiminopyridine ligand are best regarded as containing low‐spin Co II antiferromagnetically coupled to a ligand radical anion. The lowest triplet state, corresponding to a 3d ⇄π* excitation, is calculated to be only a few kcal/mol above the ground state, and is thermally accessible. The anomalous 1 H NMR chemical shifts of the LCoR complexes are suggested to be due to thermal population of the triplet state at room temperature. (© Wiley‐VCH Verlag GmbH &amp; Co. KGaA, 69451 Weinheim, Germany, 2004)
Fault-Tolerant Postselected Quantum Computation: Schemes (2004)

Postselected quantum computation is distinguished from regular quantum computation by accepting the output only if measurement outcomes satisfy predetermined conditions. The output must be accepted with nonzero probability. Methods for implementing postselected quantum computation with noisy gates are proposed. These methods are based on error-detecting codes. Conditionally on detecting no errors, it is expected that the encoded computation can be made to be arbitrarily accurate. Although the probability of success of the encoded computation decreases dramatically with accuracy, it is possible to apply the proposed methods to the problem of preparing arbitrary stabilizer states in large error-correcting codes with local residual errors. Together with teleported error-correction, this may improve the error tolerance of non-postselected quantum computation.
Effect of Low Temperature Pre-Heating on Properties of Superconducting YBa<sub>2</sub>Cu<sub>3</sub>O<i><sub>x</sub></i> Ceramics Prepared by Chemical Solution Process (1992)

The effect of low temperature pre-heating (LTPH) in the ranges of 350°C to 500°C was studied on the characteristics of YBa2Cu3O7-δ ceramics prepared by sintering the starting powders of mixed Y(OH)3, Cu(OH)2 and Ba-metal in ethanol solution. A critical current density of about 103A/cm2 was achieved in spite of the samples of large cross-sectional areas of 0.03-0.04cm2 by LTPH treatment of 500°C for 10-100h. It was found that the LTPH treatment removes water and other gases from the starting powder and also induces a uniform distribution of various constituent elements, especially oxygen.
LINQ For Dummies (2008)

If youve asked yourself Why cant I develop database and XML queries in a language I already know?, then Language INtegrated Query, or LINQ, is for you. LINQ For Dummies introduces you to LINQ and the .NET Framework technologies, so you can use LINQ to query any object, any data set, any kind of XML, and SQL Serverno questions asked. This plain-English guide gives you a thorough overview of LINQ, from understanding the tasks it performs to making LINQ work with both Visual Basic and Visual Studio 2005. It explains the four LINQ providers in the .NET Framework, the easiest ways to go about accessing data, and how to write more efficient applications with less code using LINQ. Theres also clear guidance on combining third-party providers with LINQ to create even more powerful apps. With this single, comprehensive guide, youll discover how to: Use one query language with all Microsoft languages Examine .NET language extensions and work with extension methods, partial methods, lambda expressions, and query expressions LINQ to DataSet operators, SQL server operations, XML API, or Active Directory Deal with databases download and install the Northwind database, generate Northwind entity classes, and create the Northwind XML mapping file Create the partial class example, the partial method example, and the database modification example Use objects with LINQ Query databases in Visual Basic and C# As an added bonus, you can visit the companion Web site for LINQ examples in C# and Visual Basic. With LINQ For Dummies, youll link up with LINQ in no time and see how you can query almost anything!
Essential role of Cavβ2 in T Cell development and homeostasis. (LYM7P.715) (2014)

Abstract Although many of the molecular components that regulate TCR signaling and thymocyte development are well characterized, the interactions between these molecules and their assembly in signaling complexes have remained elusive. Here, we report a novel and intriguing role of β2 regulatory subunit of voltage gated calcium channels (Cavβ2) during T cells development in thymus. We found that the T cell specific ablation of Cavβ2 resulted in severe reduction in thymocytes. Cavβ2-deficient DN and DP thymocytes were prone to die spontaneously. Consequently, the lack of Cavβ2 led to substantially lower peripheral T cell numbers, which became even more prominent in a competitive environment, thus emphasizing the crucial function of Cavβ2 in maintaining the peripheral T cell pool. Nicardipine, a selective Cav1 channel blocker, abolished the constitutive Lck phosphorylation in thymocytes and impacted the sustained calcium influx upon TCR-stimulation. The in vivo treatment of nicardipine resulted in a dramatic reduction in number of thymocytes and T cells but not bone marrow cells. Our findings demonstrate that Cavβ2 and Cav1 channels are critical components required during development and homeostasis of T cells.
Endometriosis: its association with retrograde menstruation, dysmenorrhoea and tubal pathology (1986)

Seventy-five women admitted for sterilization were laparoscoped during menstruation. Retrograde spillage of menstrual blood was observed in 76%. The occurrence of dysmenorrhoea was not associated with spillage of menstrual blood, observed endometriosis or tubal pathology. Mild or stage I endometriosis was detected in 43% of all the women but in only 54% of those who had retrograde spill. Retrograde spill was seen in 97% of those with endometriosis. A significant association (P less than 0.001) was found between endometriosis and tubal damage not due to endometriosis. The implication of these findings are discussed.
Langzeit-EKG (Holter-EKG), Event-EKG, Telemetrie (2003)

Bei einem Langzeit-EKG (auch 24-Stunden- oder Holter-EKG) wird über 4-12 auf der Brustwand aufgeklebte Elektroden während 24 Stunden kon-tinuierlich ein EKG aufgezeichnet, unabhängig da-von, ob der Patient zu einem bestimmten Zeit-punkt während der Aufzeichnung Beschwerden bzw. Herzrhythmusstörungen hat oder nicht.
Optically preamplified pulse-position modulation for fibre-optic communication systems (1996)

A Chernoff bound is applied, by means of a recently developed moment-generating function (MGF), to the error probability of an optically preamplified pulse-position-modulation (PPM) receiver assuming Gaussian received pulse shapes. Sensitivity results are presented for various length PPM words and also bit-error-rate curves. The results are compared with those obtainable from an equivalent on–off keyed nonreturn-to-zero (OOK NRZ) system and show a possible benefit of 7.1 dB. The work demonstrates the potential of such an optically preamplified PPM receiver by giving results which surpass the fundamental sensitivity limit of an optically preamplified OOK NRZ receiver and approach the sensitivity of coherent detection systems. In particular, the analysis suggests that, at the STM-4 bit rate of 622 Mbit/s, a sensitivity of 25.27 photon/bit is attainable. In addition, a Gaussian approximation is developed from the variance obtainable from the MGF and the results obtained from the Chernoff bound are compared with those obtainable from the approximation.
Olaparib and temozolomide in desmoplastic small round cell tumors: a promising combination in vitro and in vivo (2020)

We show high PARP1 and SLFN11 expression in DSRCT tumor material and antitumor effects following olaparib and TMZ combination treatment in a preclinical DSRCT model. This suggests that olaparib and TMZ combination treatment could be a potential treatment option for DSRCTs.
Nanoscale Image Processing (2009)

This chapter contains sections titled: Image Processing Algorithms Discrete Fourier Transform Conclusions References
Effects of danazol on proliferation and viability of 7,12-dimethylbenz(a)anthracene-induced mammary tumours in rats. (1995)

The suppressive effects of danazol, an isoxazol derivative of a synthetic steroid 17 alpha-ethinyltestosterone, on cellular viability and DNA synthesis in 7,12-dimethylbenz(a)anthracene induced mammary tumours were investigated in adult female rats by enzyme assays and immunohistochemistry with bromodeoxyuridine (BrdU). Rats treated with danazol for 30 days showed a decrease of plasma levels of luteinizing hormone and estradiol associated with a dysfunction in hypothalamo-hypophysial-gonadal axis, resulting in lower activities in succinate dehydrogenase and thymidine kinase, and a reduction of BrdU-immunoreactive cells in mammary tumours compared with the control, i.e., decreases of viability and pyrimidine nucleotide synthesis in tumour cells in danazol-treated rats.
Volatile Components of Selected Liverworts, and Cytotoxic, Radical Scavenging and Antimicrobial Activities of Their Crude Extracts (2010)

Crude extracts of the Tahitian liverworts Mastigophora diclados and Frullania sp., the Indonesian Frullania sp., Dumortiera hirsuta and Marchantia sp., and the Japanese Porella perrottetiana were investigated chemically by using gas chromatography-mass spectrometry (GC-MS). All extracts contained various volatile sesqui- and diterpenoids and a few aromatic compounds. The Tahitian M. diclados and Frullania sp., and the Indonesian Frullania sp. exhibited cytotoxic activity against HL-60 and KB cell lines. The extracts of the Tahitian M. diclados and the Indonesian Marchantia sp. showed radical scavenging activity, whereas the crude extracts of the Tahitian M. diclados and Frullania sp., and the Indonesian Frullania and Marchantia sp. showed antimicrobial activity against Staphylococcus aureus and Bacillus subtilis.
Signal Recognition Based On Federated Learning (2020)

Signal modulation recognition is widely used in spectrum detection, channel estimation, and interference recognition, and is a prerequisite step for signal decoding and demodulation. With the development of artificial intelligence, great progress has been made in signal recognition using deep learning methods. However, the method of deep learning requires a large amount of data. Today, with more and more emphasis on data privacy and security protection, there are usually hard-to-break barriers between data sources. This makes the data limited and of poor quality, which is not enough to support deep learning training. Federated learning may be a feasible direction to solve this problem. In this article, we will discuss signal modulation recognition based on federated learning, and the results show that an acceptable recognition rate is achieved while satisfying privacy protection and data security.
Impact of marathon running on cardiac structure and function in recreational runners (2004)

The present study examined the relationship between LV (left ventricular) function, markers of cardiac-specific damage and markers of oxidative stress in recreational runners following a marathon. Runners (n=52; 43 male and nine female; age, 35+/-10 years; height, 1.74+/-0.08 m; body mass, 75.9+/-8.9 kg) were assessed pre- and immediately post-marathon. LV function was assessed using standard M-mode two-dimensional Doppler echocardiography and TDI (tissue-Doppler imaging) echocardiography. Serum was analysed for cTnT (cardiac troponin-T), TEAC (Trolox equivalent antioxidant capacity; a measure of total antioxidant capacity), MDA (malondealdehyde) and 4-HNE (4-hydroxynonenal). A strong relationship was observed between standard and TDI echocardiography for all functional measures. Diastolic function was altered post-marathon characterized by a reduction in E (peak early diastolic filling: 0.79+/-0.11 compared with 0.64+/-0.16 cm/s; P<0.001), an increase in A (peak late diastolic filling: 0.48+/-0.11 compared with 0.60+/-0.12 cm/s; P<0.001) and a resultant decrease in E/A (ratio of E to A; 1.71+/-0.48 compared with 1.10+/-0.31; P<0.001). Ejection fraction remained unchanged post-marathon. Thirty-two runners presented with cTnT values above the lower limit of detection for the assay (0.01 microg/l), and 20 runners presented post-marathon with cTnT values above the acute myocardial infarction cut-off value (0.05 microg/l). No significant correlations were observed between cTnT and any functional measurements. MDA (2.90+/-1.58 compared with 3.59+/-1.47 micromol/l) and TEAC (1.80+/-0.12 compared with 1.89+/-0.21 mmol/l) were significantly increased post-marathon, but were unrelated to changes in function or cTnT. In conclusion, the present study demonstrated a reduction in diastolic function and widespread evidence of minimal cardiac damage following a marathon in recreational runners. The mechanism(s) underpinning the altered function and appearance of cTnT appear unrelated to reactive oxygen species.
Transformational invariance - a primer (1990)

Abstract The shape of objects seen in images depends on the viewpoint. This effect confounds recognition. We demonstrate a theoretical framework within which it is possible to construct descriptors for curves which do not vary with viewpoint. These descriptors are known as invariants. We use this framework to construct invariant shape descriptors for plane curves. These invariant shape descriptors make it possible to recognise plane curves, without explicitly determining the relationship between the curve reference frame and the camera coordinate system, and can be used to index quickly and efficiently into a large model base of curves. Many of these ideas are demonstrated by experiments on real image data.
Generation of Wideband Flat-Top Optical Frequency Comb with Electro-Optic Modulation (2019)

A flat-top 10 GHz optical frequency comb generated from electro-optic modulated continuous-wave seed is experimentally demonstrated. Combining pulse reshaping technique and nonlinear mixing process, over 1288 tones 10 dB bandwidth of >100 nm are achieved.
Lithium Nitropyrazolates as Potential Red Pyrotechnic Colorants (2022)

Abstract Strontium‐based red pyrotechnic colorants have fallen into disrepute due to the harmful influence of this alkaline earth metal on adolescents. In this context, the energetic character, safety, and combustion to benign nitrogen gas of nitropyrazoles are used for the design of the corresponding lithiated materials, which are investigated as potential replacements in the current work. For this purpose, the lithium salts of 3,4‐dinitro‐1 H ‐pyrazole, 3,5‐dinitro‐1 H ‐pyrazole, 4‐amino‐3,5‐dinitro‐1 H ‐pyrazole, 3,4,5‐trinitro‐1 H ‐pyrazole, and 4‐hydroxy‐3,5‐dinitro‐1 H ‐pyrazole were extensively characterized by standard analytical methods, low‐temperature single‐crystal X‐ray diffraction, studies of the thermo‐chemical behavior, and sensitivity assessments. Our assumption that the high nitrogen contents and the low oxygen balances of these compounds would adjust a cool, reductive flame atmosphere essential for red emissions by lithium was put to the test.
Q-switched Fiber Laser with MoS2 Saturable Absorber (2014)

Get PDF Email Share Share with Facebook Share on X Post on reddit Share with LinkedIn Add to Mendeley Add to BibSonomy Share with WeChat Get Citation Copy Citation Text R. I. Woodward, E. J. R. Kelleher, T. H. Runcorn, S. V. Popov, F. Torrisi, R. C. T. Howe, and T. Hasan, "Q-switched Fiber Laser with MoS2 Saturable Absorber," in CLEO: 2014, OSA Technical Digest (online) (Optica Publishing Group, 2014), paper SM3H.6. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Enhancement of second harmonic generation in a layered MoS2 nanoresonator (2021)

Abstract Molybdenum disulfide (MoS 2 ) is a layered material with a high refractive index in the visible and infrared spectral range. In this work, we theoretically and experimentally demonstrate Mie-resonant MoS 2 nanodisks. We show enhanced second harmonic generation from MoS 2 nanodisk resonators due to the overlap of Mie-type resonances at the fundamental wavelength with the C-exciton resonance at the second-harmonic wavelength.
Hernia recurrence and infection rate in elective complex abdominal wall repair using biologic mesh (2019)

We present the first study analyzing clinical outcomes of complex ventral hernia repairs using biologic mesh in predominately clean settings. This study being non-comparative limits definitive conclusions, but our aim is to add to the growing literature on biologic mesh to help future researchers performing comparative trials of synthetic versus biologic meshes.
Method of Calculating True Particle Size Distributions from Observed Sizes in a Thin Section (1998)

Particle size distributions obtained from a thin section are usually a skewed version of the true distribution. A previous method for determining the parent distribution was questionable because negative particle frequencies could be obtained. Here, we describe a method of determining parent distributions of spherical particles using a model with adjustable parameters. Our calculated distributions are somewhat broader than the distributions obtained with previous methods, but the average particle sizes are nearly identical. The newly developed model is applicable to any type of transmission microscopy.
Prophylometric and SEM analyses of four different finishing methods. (2012)

Adhesion is the pivot of the modern restorative dentistry. Inlays, onlays and veneers have become a valid alternative to the traditional prosthetic treatments even in the rehabilitation of extremely damaged teeth, allowing a consistent saving of sound tooth tissues. Composite resins and dental adhesive are continously investigated and improved, nevertheless the optimization of the tooth-adhesive interface has to be considered: in fact, the long-term stability of adhesion between tooth and composite material depends on the treatment of the amelo-dentinal surfaces. THIS STUDY INVESTIGATED THE QUALITY OF THE OCCLUSAL WALLS OF A CAVITY PREPARED TO RECEIVE AN INLAY AND FINISHED WITH FOUR DIFFERENT SYSTEMS: thin and extra-thin diamond coated burs, a 12-blades carbide burs and a diamond-coated tip driven by sonic instrument. Consequently, prophylometric and SEM analyses were performed on the samples. The average roughness values recorded by the prophylometer were expressed by the parameters Ra and RZ: there is a correspondence between the numeric values and the pictures of the SEM. The results show a better quality (low roughness values) of the surface treated with multi-blade burs, followed by the this and extra-thin diamond coated burs. The 25 micron diamond-coated tip of the sonic instrument obtains the roughest surface and a sensibly higher amount of smear layer than the other tested systems.
History, Overview, and Human Anatomical Pathology of Traumatic Brain Injury (2018)

Traumatic brain injury (TBI) is one of the oldest and commonest causes of medical distress in humans. However, despite much research effort, the prognosis for severe TBI patients remains poor. Worldwide, TBI is recognized as the leading cause of mortality and morbidity in young adults. TBI is a major worldwide health and socioeconomic problem. The most important factor in the prognosis of TBI patients is the severity of the "primary" brain injury. Additional delayed "secondary" brain damage continues from the time of traumatic impact in TBI patients, and the two combine to determine outcome. This chapter discusses the incidence of TBI, trends in morbidity and mortality, shifts in causes of TBI, its economic burden on society, and the pathophysiology of primary and secondary brain injuries. The authors discuss indications for surgical and intensive care treatment for intracranial hypertension and mass lesion management in TBI patients.