gebhart/patrepeval huggingface dataset:
Study on the Wear Resistance of Micro-Nanostructured WC Composite Coating Sintered by Induced Heating (2007)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
Trans‐Lanthanide Extraction Studies in the TALSPEAK System: Investigating the Effect of Acidity and Temperature (2009)

A recent review of the TALSPEAK (Trivalent Actinide ‐ Lanthanide Separation by Phosphorous reagent Extraction from Aqueous Komplexes) process summarized previous research characterizing the performance of this system. Attempts were made in that report to develop correlations between the previous separations data and the thermodynamic data that describes the interactions among the components of the separation system. However, the diversity of observations and the breadth of conditions employed in the many studies from the literature make comparisons between the TALSPEAK system performance and existing thermodynamic data challenging. To better test the adequacy of the available thermodynamic database for modeling this system, an internally consistent set of observations of lanthanide extraction under TALSPEAK conditions is offered in this report. The extraction of the lanthanides from La through Lu (excluding Pm) plus Y, and that of Am3+ from buffered lactic acid solutions containing diethylenetriamine‐N,N,N′,N″,N″‐pentaacetic acid (DTPA) into organic solutions of bis‐(2‐ethylhexyl)phosphoric acid (HDEHP) solutions in 1,4‐diisopropylbenzene has been investigated as a function of temperature, pH, and ionic strength. Extraction of both lanthanides and Am3+ decreases with increasing pH and with temperature. At the same time, separation factors remain approximately constant. Calculations based on an internally consistent thermodynamic data set confirm the prior conclusion that the existing thermodynamic data do not predict the observed decline in partitioning with increased pH, though the data do support the constancy of the separation factors. The relationship between the basic thermodynamic data, calculated speciation, and the performance of the separation system is discussed.
Broadband transparent and CMOS-compatible flat optics with silicon nitride metasurfaces [Invited] (2018)

Metasurface optics is a promising candidate for realizing the next generation of miniaturized optical components. Unlike refractive optics, these devices modify light over a wavelength-scale thickness, changing the phase, amplitude, and polarization. This review details recent developments and state-of-the-art metasurfaces realized using silicon nitride. We emphasize this material as to date it has the lowest refractive index with which metasurfaces have been experimentally demonstrated. The wide band gap of silicon nitride enables reduced absorption over a broad wavelength range relative to its higher index counterparts, providing a CMOS-compatible platform for producing a variety of high efficiency metasurface elements and systems.
Seed Physiology of some Pulses and Cereals under the Influence of Acacia arabica Gum (2011)

Present paper deals with the study of impact of Acacia arabica gum solution on seed germination, root and shoot length of some pulses like cowpea, gram and some cereals like wheat and maize. It was found that Acacia arabica gum induces the seed germination, root and shoot length.
Renaissance Books (1966)

An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.
3D video shot boundary detection based on clustering of depth-temporal features (2013)

This paper proposes an algorithm for automatic detection of 3D video shots with different perceptual features. The proposed algorithm is able to identify distinct three-dimensional visual scenes by detecting 3D video shot boundaries based on clustering of depth-temporal features. A combination of texture variation along the temporal dimension and depth variance is used by K-means clustering to find the stereo frames which comprised the 3D scene boundaries. An important characteristic of the proposed algorithm in comparison with others published in the literature for temporal segmentation of classic 2D video is that no thresholds are used in the decision processes neither training data sets. The experimental results show that the proposed method is capable of achieving high recall (e.g., 0.95) and precision rate (e.g., 1.0) in video sequences with both sharp and smooth 3D scene transitions.
<title>Acoustic target detection, tracking, classification, and location in a multiple-target environment</title> (1997)

Commercially available Digital Signal Processors can be used to host state-of-the-art air acoustic adaptive beamforming algorithms in low power, low cost, real-time sensor systems. These systems are suitable for use as both unattended ground sensors and in platform-mounted applications. This paper describes a compact state-of-the-art, real-time adaptive beamforming approach and sensor hardware. Recent day/night field test results for detection range, multiple target tracking, and classification are presented for various vehicles. The data focuses on long range target detection as well as tracking and classification performance in multiple target environments composed of closely spaced or clustered targets. Target location (x-y position) performance using real-time netted sensors (sensor fusion) is also presented.
Hyperspectral X-ray Denoising: Model-Based and Data-Driven Solutions (2019)

In this paper we deal with the problem of hyperspectral X-Ray image denoising. In particular, we compare a classical model-based Wiener filter solution with a datadriven methodology based on a Convolutional Autoencoder. A challenging aspect is related to the specific kind of 2D signal we are processing: it presents mixed dimensions information since on the vertical axis there is the pixels position while, on the abscissa, there are the different wavelengths associated to the acquired X-Ray spectrum. The goal is to approximate the denoising function using a learning-from-data approach and to verify its capability to emulate the Wiener filter using a much less demanding approach in terms of signal and noise statistical knowledge. We show that, after training, the CNN is able to properly restore the 2D signal with results very close to the Wiener filter, honouring the proper signal shape.
PEGylated Versus Non-PEGylated γ Fe2O3@Alendronate Nanoparticles (2012)

Synthesis of uncoated Fe 2 O 3 particles was already described A solution of dimethylamine 40% in water ((CH 3 ) 2 NH, 10 .5 mL) is added
The Sulfonation of Chitosan<sup>1,2</sup> (1959)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Sulfonation of Chitosan1,2M. L. Wolfrom and T. M. Shen HanCite this: J. Am. Chem. Soc. 1959, 81, 7, 1764–1766Publication Date (Print):April 1, 1959Publication History Published online1 May 2002Published inissue 1 April 1959https://pubs.acs.org/doi/10.1021/ja01516a061https://doi.org/10.1021/ja01516a061research-articleACS PublicationsRequest reuse permissionsArticle Views818Altmetric-Citations98LEARN 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
Importance of Phospholipid in the Folding and Conformation of Phosphatidylinositol Transfer Protein:  Comparison of Apo and Holo Species (1997)

The significance of noncovalently bound phospholipid as a structural component of phosphatidylinositol transfer protein (PITP) and its role in acquisition and maintenance of the native conformation of the protein have been addressed by studying the refolding of PITP after exposure to 6 M guanidinium chloride (GdnCl). Protein conformations were characterized by (1) the intrinsic tryptophan fluorescence, circular dichroism, and absorbance spectroscopy, (2) the degree of binding of the fluorescent probe 1,8-ANS, and (3) limited proteolytic digestion. When the GdnCl concentration was reduced 100-fold by rapid dilution at 25 degrees C, practically all of the native transfer activity was regained within 20 min. Endogenous phospholipid demonstrated a strong interaction with the native PITP. Separation of the phospholipid from the protein by chromatography on a lipophilic matrix was achieved only under denaturing conditions and resulted in spontaneous oxidation of the apo-protein, accompanied by almost complete loss of recoverable transfer activity. Under reducing conditions, however, apo-PITP recovered more than 80% of the native transfer activity and was similar to holo-PITP in the kinetics of phospholipid transfer. Renatured apo-PITP demonstrated a significant relaxation of the tertiary structure, compared to native and renatured holo-PITP. Incubation of apo-PITP with phospholipid vesicles resulted in a more compact protein conformation. We conclude that the polypeptide can spontaneously fold to a native-like conformation, sufficient for interaction with a lipid membrane and acquisition of a phospholipid ligand. Binding of a phospholipid ligand brings about the final adjustments of protein conformation to the more compact native structure.
Superdirective microphone array for a set-top videoconferencing system (2002)

In set-top videoconferencing, the complete videoconferencing system fits unobtrusively on top of the television. The microphone sound pickup system is one of the most important functional blocks with constraints of small size, high performance, and low cost. Persons speaking several feet away from the system must be picked up satisfactorily while noise generated internally in the system by the cooling fan and hard drive, and noise generated externally from air conditioning and nearby computers must be attenuated. In this paper, a three microphone superdirective array is described which meets these constraints. An analog highpass and lowpass filter are used to merge two of the microphone signals to form a single channel, so that a single stereo A/D converter is required to process the three microphone signals. The microphone signals are then linearly combined so as to maximize the signal-to-noise ratio, resulting in nulls steered toward nearby objectionable noise sources.
Fabrication and luminescent properties of ITO nanocrystalline coated micro Eu:Y 2 O 3 particles (2008)

The Eu<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub>-particles of size 3.5 μm were coated with a layer of indium tin oxide precursor (ITO) and cured at 120oC. The coating process was repeated four times. Finally, samples were annealed at 700 °C to form a cubic structure of ITO. The morphology and structure of obtained ITO- Eu:Y<sub>2</sub>O<sub>3</sub> core-shells materials were determined by the X-ray diffraction (XRD), transmission electro-microscopy (TEM) and scanning electron-microscopy (SEM) analyses. In order to comparison of emissive properties, obtained was mixed with micrograins of ZnS:Ag in the same mass ratio. The photo- and cathodoluminescent spectra of obtained structures materials were determined and analyzed. The possible applications are discussed.
Transistor gate line roughness formation and reduction in sub-30-nm gate patterning using multilayer hard mask structure (2014)

In this work, we have investigated the evolution of line roughness from the photoresist (PR) to the poly-silicon gate etch based on the composite SiO2/Si3N4/SiO2 (ONO) multilayer hard mask structure using a capacitively coupled plasma etcher. A severe line roughness could be observed during gate patterning when the PR pattern was directly transferred into the ONO hard mask. Then, the formation mechanisms of line roughness were the results of the effects of decomposed oxygen radical generated from the SiO2 mask because of ion bombardment and the rough surface morphology of poly-silicon that accelerates the etching of both the hard mask and the PR sidewalls by reflected ions. We found that a combination of an amorphous silicon (α-Si) capping layer and amorphous Si gate could effectively reduce the strong dependence of hard mask etch on PR and ions reflection effect from rough surface morphology of poly-silicon. Finally, our results have shown that the gate pattern with a fairly smooth line, without deformation, and with the gate length of 29 nm and the line width roughness of 3.4 nm can be achieved.
A framework for key management for data confidentiality in cloud environment (2015)

Cloud computing is a technique to keep the resources intact and available with internet facilities online at anytime and anywhere. A user may access cloud services as a utility service and can use them almost instantly. These features make cloud computing so flexible with easy access for unlimited users with several potential risks, thus demanding for the security mechanisms. Hence the need for cryptographic algorithm is inevitable for the transaction of data in a more secure manner, providing confidentiality and integrity of the data to the users. There are many numbers of cryptographic algorithms that make the system protected from the attacks of intruders. With the use of cryptographic algorithms, the keys are generated and the techniques are introduced to manage these generated keys. We make all the impossibility by use of management techniques for the intruders to break the key. These techniques act as a black box where the intruders have not even slightest glue for the key identification. In this paper the key management mechanisms are introduced which would help the users to manage the generated keys to protect the data in terms of confidentiality in cloud storage.
Evaluation of Exclusive Data Allocation Between SSD Tier and SSD Cache in Storage Systems (2014)

We proposed and evaluated the storage I/O response time with the exclusive allocation method between SSD for tiered volume and SSD for cache in the storage system utilizing SSD and HDD. In the proposed method, the SSD cache function with exclusive allocation caches only data which is allocated on HDD tier. This enables more data to be allocated on SSD and leads to reduce storage I/O response time. The simulation result shows that the proposed method reduces the storage I/O response time in high I/O locality workload with large SSD capacity. The proposed method reduces the storage I/O response time by up to 23% compared to the combination method of SSD/HDD volume tiering method and SSD cache method without exclusive allocation.
The Vitamin B content of vegetables (1930)

Statistical treatment of the data presented leads to the following conclusions:\n1. The cortex of the carrot contains more vitamin B than the xylem and the periderm more than the cortex.\n2. Within the limitations imposed by the small number of animals and the variability of each group, the data show that lettuce, kohlrabi and tomatoes, when grown under glass, are as potent in vitamin B as when grown in the direct sunlight. However, more data are necessary for positive proof.\n3. Kohlrabi is a relatively good source of vitamin B.\n4. A storage period of five months, under the conditions mentioned, did not alter vitamin B content of the carrots.
Topological Insulator: A Summary and Perspective (2011)

Topological insulators are hailed in recent years as a new state of quantum matter and have received their due share of attention, both from experimental and theoretical sides. In this article I will give a part-historical and part-logical account of topological concepts that have threaded the condensed matter physics in the last few decades and ultimately led to the invention of topological insulator theory. These include quantized circulation and vorticity in superfluid matter, quantized Hall conductance in two-dimensional electron gas, and the more recent example of quantum spin Hall effect. I will make a brief description of the theory of topological insulator, mostly relying on the path taken by Kane and collaborators. I will conclude with a brief discussion of current unsolved issues and a perspective.
Evidence for low-pressure catalysis in the gas phase by a naked metal cluster: the growth of benzene precursors on iron (Fe4+) (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence for low-pressure catalysis in the gas phase by a naked metal cluster: the growth of benzene precursors on iron (Fe4+)Patrick Schnabel, Manfred P. Irion, and Konrad G. WeilCite this: J. Phys. Chem. 1991, 95, 24, 9688–9694Publication Date (Print):November 1, 1991Publication History Published online1 May 2002Published inissue 1 November 1991https://pubs.acs.org/doi/10.1021/j100177a018https://doi.org/10.1021/j100177a018research-articleACS PublicationsRequest reuse permissionsArticle Views237Altmetric-Citations95LEARN 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
Head registration techniques for image-guided surgery (1998)

Localization of the pathological structures in relation to the surrounding anatomy and understanding of the surgical anatomy are probably the most important keys to successful neurosurgery. Image-guided surgery is an important tool for understanding an individual's anatomy and for precisely locating the lesion. Head registration is the most important step in image-guided surgery, required by every system in use today, although these systems show great differences. In this study, head registration techniques and user algorithms in 83 image-guided surgery cases were analyzed. Several types of fiducials including skin markers, bone fiducials, and the stereotactic frame were used for registration. Clinical applications, ease of use, and computer-calculated accuracy values for each type were compared. The average accuracy was 1.50 mm. X-spot skin markers are the fiducials most commonly used with CT scan. The stereotactic frame was the most accurate method, with an accuracy of 0.69 mm. Disc-shaped fiducials were used when MRI was the imaging modality; they provided an average accuracy of 2.62 mm. Head registration is an important part of image-guided surgery; the procedure used for registration should be based on the requirements of each individual case. Our results indicated that the stereotactic frame is the most accurate method of registration; however, skin markers provide reasonable accuracy with significant ease of use and patient comfort.
Flavones. 3. Synthesis, biological activities, and conformational analysis of isoflavone derivatives and related compounds (1992)

A series of 2-alkylisoflavone derivatives 1 was prepared with the intent to study the importance of the phenyl group (at the 3-position) of the isoflavone in imparting antihypertensive activity and the substitution effects at the 2-position of isoflavone. With the exception of the 2-isopropyl analog, the antihypertensive activity of these compounds appears to have a slow onset and long duration. None of the analogs appears better than the corresponding flavone (3) and 3-phenylflavone (2) analogs. An unsuccessful attempt to correlate the relationship between antihypertensive activity and the calculated torsional angle of C2-C3-C1'-C2' is discussed. Antiinflammatory activities of these compounds along with 7-(oxypropylamine)flavones were also evaluated and found to be not very potent. The antiinflammatory activity appears to be sensitive to steric effects of the alkyl group on the nitrogen and of substituents at the 2-position of the isoflavones, while the hydroxyl group of the propanolamine side chain is not essential.
Trajectories of maternal depressive and anxiety symptoms from pregnancy to five years postpartum and their prenatal predictors (2019)

History of depression and increased stress are significant risk factors that can be identified during regular perinatal visits; therefore, clinicians should inquire about these risk factors to identify women at high risk of ongoing depression or anxiety.
High-efficiency near-infrared emission from Bismuth-doped SiO_073 thin films fabricated by ion implantation technology (2016)

Over the past decade, the possibility of near-infrared light generation and amplification on chip has attracted great interest for future monolithic integrated optical components. In this Letter, we demonstrated a CMOS-compatible method to fabricate amorphous SiO0.73 thin films doped with Bi ions. It exhibited highly improved σ(em)×τ of up to 4.2×10(-23) cm2 s and greatly enhanced near-infrared characteristic emission originated from Bi ions by nearly 60 times via Si nanocrystal size control. We anticipated that this Bi-doped near-infrared light emitter would be a new starting point for future research in the field of optoelectronic integration.
Evaluation of Urinary Pyridinoline in Healthy Adults and Patients with Rheumatoid Arthritis by an Improved High-performance Liquid Chromatographic Assay. (1996)

A modified method for the determination of pyridinoline using high-performance liquid chromatography (HPLC) has been applied to analyze the urine of healthy adults and patients with rheumatoid arthritis. The concentrations of pyridinoline in the urine of healthy Japanese men and women (average age: 50.6 and 51.8 yr, respectively) during morning fasting were 28.8 +/- 2.8 (SEM) and 34.8 +/- 3.5 nmol/mmol creatinine, respectively. In the case of patients with rheumatoid arthritis, the urinary concentration of pyridinoline was 49.1 +/- 8.3 nmol/mmol creatinine (women, average age, 61.1 yr), which was significantly higher than that of healthy women of the same age (p < 0.05). This study supports the application of HPLC for urinary pyridinoline analysis and as a screening test for patients with bone disease.