gebhart/patrepeval huggingface dataset:
Contribution of Pb to Ferroelectricity in Perovskite-Type Oxides (2004)

We have studied the nature of the covalent bond between Pb 6p and O 2p orbitals in perovskites based on first-principles calculations with Berry phase theory. We compared the electric polarization and Young's modulus between PbTiO3 and BaTiO3. We found that PbTiO3 has higher electric polarization and softness than BaTiO3 because of the cooperation mode of both Ti—O(2) and Pb—O(1) covalent bonds. We propose that in the structural phase transition the system with the lower symmetry avoids ion repulsion through the additional degree of freedom available from atom displacement.
Transport and adhesion properties of an unlined and a liquid‐crystalline polymer–lined vinyl ester thermoset exposed to severe environments (2004)

Abstract The application of liquid‐crystalline polymers (LCP) as lining materials for fiber‐reinforced plastics was investigated. The lining consisted of one uniaxially and one biaxially oriented LCP and, for comparison, a fluorinated ethylene propylene copolymer. The lining was attached to a glass‐fiber–reinforced vinyl ester thermoset. The laminates were examined with respect to their chemical resistance, transport/barrier properties, and lining/matrix adhesion behavior. The transport properties were determined by gravimetric desorption measurements and cup tests. It was shown that the LCP was suitable as a lining in organic solvent and nonoxidizing acid environments. Diffusivities, equilibrium concentrations, and transmission rates of water, methanol, toluene, and trichloroethylene were obtained in the LCP, the fluorinated ethylene propylene copolymer, and also, in the case of the vinyl ester, of hydrochloric acid. In general, the diffusivity and transmission rate in the LCP were one to several orders of magnitude lower than those of the fluorinated ethylene propylene copolymer and the vinyl ester. The reinforcement in the glass‐fiber–reinforced plastic led to an increase in the water and methanol diffusivities and transmission rates, which was probably attributable to liquid capillary diffusion. The lap‐shear bonding strength between the LCP and the vinyl ester was poor, but it was improved almost sixfold by a combined abrasive and oxygen plasma treatment. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 797–806, 2005
Novel nanographene oxide-calcium phosphate cement inhibits Enterococcus faecalis biofilm and supports dental pulp stem cells (2021)

The injectable CPC-chitosan-GO paste had strong effects on inhibition E. faecalis and hDPSC support, which could fill the void of adjusting paste to the defect and shaping in situ for promising endodontic therapy.
Temperature-dependent study of 6H-SiC pin-diode reverse characteristics (2005)

Silicon carbide is a promising material for special semiconductor applications, such as high-power and high-temperature devices. To date, much effort has been devoted to improving the process and device technology. With the progress in this field, the need for accurate modeling of device characteristics arises. This implies the formulation of proper physical models and their validation. We report on investigations of the reverse characteristics of a 6H-SiC pin diode using the multi-dimensional device simulator DESSIS/sub -ISE/ discussing the contributions of different physical mechanisms to the blocking behavior and their temperature dependence in the range of 300-623 K.
In VivoValidation of a Hybrid Tracking System for Navigation of an Ultrathin Bronchoscope Within Peripheral Airways (2009)

Transbronchial biopsy of peripheral lung nodules is hindered by the inability to access lesions endoluminally due to the large diameter of conventional bronchoscopes. An ultrathin scanning fiber bronchoscope has recently been developed to advance image-guided biopsy several branching generations deeper into the peripheral airways. However, navigating a potentially complex 3-D path to the region of interest presents a challenge to the bronchoscopist. An accompanying guidance system has also been developed to track the bronchoscope through the airways, and display its position and intended path on a virtual display. Intraoperative localization of the bronchoscope was achieved by combining electromagnetic tracking (EMT) and image-based tracking (IBT). An error-state Kalman filter was used to model the disagreement between the two tracking sources. The positional tracking error was reduced from 14.22 and 14.92 mm by independent EMT and IBT, respectively, to 6.74 mm using the hybrid approach. Hybrid tracking of the scope orientation and respiratory motion compensation further improved tracking accuracy and stability, resulting in an average tracking error of 3.33 mm and 10.01 degrees.
A 2.4GHz 830pJ/bit duty-cycled wake-up receiver with &#x2212;82dBm sensitivity for crystal-less wireless sensor nodes (2010)

This paper describes a 2.4GHz Wake-up Receiver (WuRx) designed to operate with low-accuracy (≪0.5%) frequency references [1], enabling crystal-less and thus low-cost wireless sensor nodes (WSNs). Robustness to frequency error is achieved by combining non-coherent energy detection with a broadband-IF superheterodyne architecture, and by using a pulse-position-modulated (PPM) impulse radio (IR) modulation scheme [2]. The Rx front-end and the LO generator are duty-cycled at pulse level, thereby reducing the power consumption to less than 420µW, which is more than adequate for use in WSNs [2]. PPM-IR also enables the realization of an interferer-robust receiver without the use of bulky off-chip RF filters [3,4]. This 65nm CMOS fully integrated WuRx employs a duty-cycled LO generator and achieves a sensitivity of −82dBm at a data rate of 500kb/s with an energy efficiency of 830pJ/bit.
The activin A antagonist follistatin inhibits asthmatic airway remodelling (2012)

These data demonstrate that follistatin attenuates asthmatic airway remodelling. Our findings point to the potential of follistatin as a therapeutic for prevention of airway remodelling in asthma and other inflammatory lung diseases.
Overview of Lithium-Ion Battery Modeling Methods for State-of-Charge Estimation in Electrical Vehicles (2018)

As a critical indictor in the Battery Management System (BMS), State of Charge (SOC) is closely related to the reliable and safe operation of lithium-ion (Li-ion) batteries. Model-based methods are an effective solution for accurate and robust SOC estimation, the performance of which heavily relies on the battery model. This paper mainly focuses on battery modeling methods, which have the potential to be used in a model-based SOC estimation structure. Battery modeling methods are classified into four categories on the basis of their theoretical foundations, and their expressions and features are detailed. Furthermore, the four battery modeling methods are compared in terms of their pros and cons. Future research directions are also presented. In addition, after optimizing the parameters of the battery models by a Genetic Algorithm (GA), four typical battery models including a combined model, two RC Equivalent Circuit Model (ECM), a Single Particle Model (SPM), and a Support Vector Machine (SVM) battery model are compared in terms of their accuracy and execution time.
ChemInform Abstract: Nano CuFe2O4: An Efficient, Magnetically Separable Catalyst for Transesterification of β‐Ketoesters. (2015)

Abstract Domino reaction of 5‐alkoxy‐ or 5‐aminoisoxazoles (I) with 1,3‐dicarbonyl compounds under metal relay catalysis provides access to 2,4‐dicarbonylpyrrole derivatives in good to high yields.
MEMS tunable-finesse slotted micromirror resonator (2018)

Tunable finesse optical filters and resonators are required for some applications when the signal-to-noise ratio and spectral resolution are traded-off to optimize the system performance. They can be used as well to control the amount of energy stored inside the resonator that can be used for optical trapping and atomistic studies. In this work we report a tunable finesse optical MEMS filter in deeply-etched SOI technology. The structure is composed of an optical cavity formed between a multilayer dielectric-coated optical fiber and slotted micromirror, attached to a comb-drive actuator. The cavity length between the multilayer Bragg coated fiber and the slotted micromirror is constant, while the slit width is being varied. The slit width is controlled by the applied voltage on the actuator. Changing the slit width modulates the reflectivity of the micromirror; and hence the finesse of the optical cavity. The obtained finesse is tuned by a factor of 5 across the band of 1330 nm and 1550 nm.
Displaced Three- and Four-Part Proximal Humerus Fractures: Evaluation and Management (2000)

Three- and four-part fractures are the most severe injuries in the spectrum of fractures of the proximal humerus. Despite the shortcomings of the currently available imaging techniques, fracture displacement remains an important principle in guiding management. As a result, increasing emphasis has been placed on the use of Neer's criteria in intraoperative decision making. Patients with four-part fractures with valgus impaction of the head fragment should be treated with limited open reduction and minimal internal fixation, as the blood supply to the humeral head is better preserved than with other fracture patterns and the potential for osteonecrosis is less. In the case of displaced three- and four-part fractures, the physiologic age and bone quality also help guide treatment selection. In young patients with good bone quality, attempts to preserve the humeral head by meticulous handling of soft tissues and the use of low-profile implants to secure fracture fragments is recommended. Vertical fixation alone with Rush rods in patients with poor bone quality and in those with four-part fractures is no longer considered adequate and should not be used. For selected patients with three-part fractures and satisfactory bone quality, fixation with Ender rods and tension-band wiring may be appropriate. Elderly patients and those with poor bone quality have a greater risk of loss of reduction after open reduction and internal fixation, and the current consensus is that early hemiarthroplasty is the appropriate treatment. Late reconstruction necessitated by malunion and soft-tissue contracture is technically difficult, and the outcome is less favorable. The outcome of treatment of three- and four-part fractures is dependent on the surgeon's ability to analyze the fracture pattern and execute appropriate techniques to restore anatomy and function. The use of cement for prosthetic fixation and rigorous attention to tuberosity stabilization and anatomic reduction are two factors that will optimize outcome. Adequate pain relief after hemiarthroplasty has been consistently demonstrated, but return of motion and function is less predictable.
Intramuscular Injection of Angiogenic Gene with Bubble Liposomes Followed by Ultrasound Exposure to Improve Angiogenesis (2011)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Yoichi Negishi, Keiko Matsuo, Yoko Endo‐Takahashi, Kentaro Suzuki, Yuuki Matsuki, Norio Takagi, Ryo Suzuki, Kazuo Maruyama, Yukihiko Aramaki; Intramuscular Injection of Angiogenic Gene with Bubble Liposomes Followed by Ultrasound Exposure to Improve Angiogenesis. AIP Conference Proceedings 12 September 2011; 1359 (1): 335–339. https://doi.org/10.1063/1.3607929 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Development of a high-precision power supply for bending electromagnets of a heavy ion medical accelerator (2011)

A 3 MW-class high-precision IGBT chopper type power supply was developed for the bending electromagnets of the Heavy-Ion Facility at Gunma University. The current ripple was smaller than ±1×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-5</sup> , and the current tracking error was smaller than ±1×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-4</sup> . Heavy ion beams were successfully accelerated with this power supply, and medical treatment commenced on 16th March 2010.
A Hybrid Variance-Reduced Method for Decentralized Stochastic Non-Convex Optimization (2021)

This paper considers decentralized stochastic optimization over a network of $n$ nodes, where each node possesses a smooth non-convex local cost function and the goal of the networked nodes is to find an $ε$-accurate first-order stationary point of the sum of the local costs. We focus on an online setting, where each node accesses its local cost only by means of a stochastic first-order oracle that returns a noisy version of the exact gradient. In this context, we propose a novel single-loop decentralized hybrid variance-reduced stochastic gradient method, called GT-HSGD, that outperforms the existing approaches in terms of both the oracle complexity and practical implementation. The GT-HSGD algorithm implements specialized local hybrid stochastic gradient estimators that are fused over the network to track the global gradient. Remarkably, GT-HSGD achieves a network topology-independent oracle complexity of $O(n^{-1}ε^{-3})$ when the required error tolerance $ε$ is small enough, leading to a linear speedup with respect to the centralized optimal online variance-reduced approaches that operate on a single node. Numerical experiments are provided to illustrate our main technical results.
Beckmann Rearrangement of Some Cyclic Sulfone Ketoximes1 (1957)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTBeckmann Rearrangement of Some Cyclic Sulfone Ketoximes1WILLIAM E. TRUCE and JOHN A. SIMMSCite this: J. Org. Chem. 1957, 22, 6, 617–620Publication Date (Print):June 1, 1957Publication History Published online1 May 2002Published inissue 1 June 1957https://doi.org/10.1021/jo01357a007RIGHTS & PERMISSIONSArticle Views193Altmetric-Citations9LEARN 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 Get e-Alerts
Some EM-type algorithms for incomplete data model building (2021)

We propose an extension of the EM algorithm and its stochastic versions for the construction of incomplete data models when the selected model minimizes a penalized likelihood criterion. This optimization problem is particularly challenging in the context of incomplete data, even when the model is relatively simple. However, by completing the data, the E-step of the algorithm allows us to simplify this problem of complete model selection into a classical problem of complete model selection that does not pose any major difficulties. We then show that the criterion to be minimized decreases with each iteration of the algorithm. Examples of the use of these algorithms are presented for the identification of regression mixture models and the construction of nonlinear mixed-effects models.
ChemInform Abstract: REACTION OF SULFAMIDES WITH DIKETENE. III. SYNTHESIS OF N‐SULFAMOYL‐2,6‐DIMETHYL‐4‐PYRONE‐3‐CARBOXAMIDES (1978)

Abstract Aus den Aminoverbindungen (I) erhält man mit Diketen (II) über diskutierte Zwischenstufen die Pyrone (III).
Dynamic dual-tracer MRI-guided fluorescence tomography to quantify receptor density in vivo (2013)

The up-regulation of cell surface receptors has become a central focus in personalized cancer treatment; however, because of the complex nature of contrast agent pharmacokinetics in tumor tissue, methods to quantify receptor binding in vivo remain elusive. Here, we present a dual-tracer optical technique for noninvasive estimation of specific receptor binding in cancer. A multispectral MRI-coupled fluorescence molecular tomography system was used to image the uptake kinetics of two fluorescent tracers injected simultaneously, one tracer targeted to the receptor of interest and the other tracer a nontargeted reference. These dynamic tracer data were then fit to a dual-tracer compartmental model to estimate the density of receptors available for binding in the tissue. Applying this approach to mice with deep-seated gliomas that overexpress the EGF receptor produced an estimate of available receptor density of 2.3 ± 0.5 nM (n = 5), consistent with values estimated in comparative invasive imaging and ex vivo studies.
Thermal Imaging of Solid Oxide Fuel Cell Anode Degradation with Dry and Wet Ethanol Fuel Flows (2011)

Near-infrared thermal imaging has been used to study the effects of humidifying ethanol fuel flows on the surface temperature of SOFC anodes. Temperatures were monitored for SOFCs operating with dry and wet ethanol fuel flows at 800 ºC. The results indicate a dramatic decrease in the amount of carbon that is formed when ethanol flows are humidified. Humidifying the fuel stream reduces both the cooling observed under ethanol fuel flow conditions and the heating observed under post-fuel flow electrochemical oxidation conditions. The spatial variation of the temperature is also reduced. Thermal imaging is capable of detecting fatigue in functioning cells because temperature variations observed in situ provide early signs of SOFC failure, therefore thermal imaging is a viable system diagnostic.
Orange Color Electroluminescence from Bis(2-styryl-8-quinolinolato)zinc(II) (1997)

Abstract An orange-light-emitting zinc complex (Znsq2) having 2-styryl-8-quinolinolato ligands was synthesized and used as an emitter material in organic electroluminescent (EL) devices. The device structure of glass substrate / indium-tin oxide / tetraphenyldiamine derivative / Znsq2 / Mg:Ag was employed. The EL device exhibited orange light originating from Znsq2 with a maximum luminance of 2000 cd/m2 at 11 volt.
Oral immunization of haemaggulutinin H5 expressed in plant endoplasmic reticulum with adjuvant saponin protects mice against highly pathogenic avian influenza A virus infection (2014)

Pandemics in poultry caused by the highly pathogenic avian influenza (HPAI) A virus occur too frequently globally, and there is growing concern about the HPAI A virus due to the possibility of a pandemic among humans. Thus, it is important to develop a vaccine against HPAI suitable for both humans and animals. Various approaches are underway to develop such vaccines. In particular, an edible vaccine would be a convenient way to vaccinate poultry because of the behaviour of the animals. However, an edible vaccine is still not available. In this study, we developed a strategy of effective vaccination of mice by the oral administration of transgenic Arabidopsis plants (HA-TG) expressing haemagglutinin (HA) in the endoplasmic reticulum (ER). Expression of HA in the ER resulted in its high-level accumulation, N-glycosylation, protection from proteolytic degradation and long-term stability. Oral administration of HA-TG with saponin elicited high levels of HA-specific systemic IgG and mucosal IgA responses in mice, which resulted in protection against a lethal influenza virus infection with attenuated inflammatory symptoms. Based on these results, we propose that oral administration of freeze-dried leaf powders from transgenic plants expressing HA in the ER together with saponin is an attractive strategy for vaccination against influenza A virus.
Delineation of the Oligomerization, AP-2 Binding, and Synprint Binding Region of the C2B Domain of Synaptotagmin (1998)

Biochemical and genetic studies indicate that synaptotagmin I functions as a Ca2+ sensor during synaptic vesicle exocytosis and as a membrane receptor for the clathrin adaptor complex, AP-2, during endocytosis. These functions involve the interaction of two conserved domains, C2A and C2B, with effector proteins. The C2B domain mediates Ca2+-triggered synaptotagmin oligomerization, binds AP-2 and is important for the interaction of synaptotagmin with Ca2+ channels. Here, we report that these are conserved biochemical properties: Ca2+ promoted the hetero-oligomerization of synaptotagmin I with synaptotagmins III and IV, and all three synaptotagmin isoforms bound the synprint region of the alpha1B subunit of N-type Ca2+ channels. Using chimeric and truncated C2 domains, we defined a common region of C2B that mediates oligomerization and AP-2 binding. Within this region, two adjacent lysine residues were identified that were critical for synaptotagmin oligomerization, AP-2, and synprint binding. Competition experiments demonstrated that the synprint fragment was an effective inhibitor of synaptotagmin oligomerization and also blocked binding of synaptotagmin to AP-2. In a model for the structure of C2B, the common effector binding site localized to a putative Ca2+-binding loop and a concave region formed by two beta-strands. These studies provide the first structural information regarding C2B target protein recognition and provide the means to selectively disrupt synaptotagmin-effector interactions for functional studies.
Terpiodiene: A Novel Tricyclic Alcohol from the Okinawan Sponge Terpios hoshinota (2002)

Abstract Terpiodiene (1), a novel tricyclic alcohol, was isolated from the Okinawan sponge Terpios hoshinota, which overgrows and kills corals. Its structure was determined by spectroscopic analysis and the modified Mosher’s method. This compound exhibited moderate cytotoxicity against P388 cells.
1.3 μm room-temperature GaAs-based quantum-dot laser (1998)

Room-temperature lasing at the wavelength of 1.31 μm is achieved from the ground state of an InGaAs/GaAs quantum-dot ensemble. At 79 K, a very low threshold current density of 11.5 A/cm2 is obtained at a wavelength of 1.23 μm. The room-temperature lasing at 1.31 μm is obtained with a threshold current density of 270 A/cm2 using high-reflectivity facet coatings. The temperature-dependent threshold with and without high-reflectivity end mirrors is studied, and ground-state lasing is obtained up to the highest temperature investigated of 324 K.