gebhart/patrepeval huggingface dataset:
Structural features in electron-deficient (.eta.-pentamethylcyclopentadienyl)titanium-diene complexes and their catalysis in the selective oligomerization of conjugated dienes (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural features in electron-deficient (.eta.-pentamethylcyclopentadienyl)titanium-diene complexes and their catalysis in the selective oligomerization of conjugated dienesHitoshi Yamamoto, Hajime Yasuda, Kazuyuki Tatsumi, Keonil Lee, Akira Nakamura, Jie Chen, Yasushi Kai, and Nobutami KasaiCite this: Organometallics 1989, 8, 1, 105–119Publication Date (Print):January 1, 1989Publication History Published online1 May 2002Published inissue 1 January 1989https://pubs.acs.org/doi/10.1021/om00103a014https://doi.org/10.1021/om00103a014research-articleACS PublicationsRequest reuse permissionsArticle Views574Altmetric-Citations60LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Wettable Porous Plastic for Use as a Porous Barrier in Soil Hydraulic Studies (1989)

Abstract Two grades of wettable porous plastic were examined for their applicability in water characteristic measurements and other soil hydraulic studies. The porous plastic is available in sheets (0.46 m wide, arbitrary lengths) and the two grades are composed of different amounts of polyvinyl chloride (PVC) and silica. Grade A‐20 exhibited a range of bubbling pressures between 62 and 69 kPa and a mean conductance of 0.20 h −1 . Grade A‐40 exhibited a range of bubbling pressures between 21 and 35 kPa and a mean conductance of 1.60 h −1 . These conductances generally exceed that of commonly employed porous barriers with comparable bubbling pressures. Comparison of the water retention curves of grades A‐20 and A‐40 indicate that grade A‐20 is more uniform, has lower porosity, and has smaller effective pore diameters with a narrower range of pore sizes. The porous plastic is easily cut to size by scissors and bonded to itself, PVC, or acrylic. The material is also durable and inexpensive.
A study on mold material and coating effect in sand casting process (2009)

Surface finish is the most desired characteristics to be on product surface. This is because surface finish is a predictor of the performance of a mechanical component, since irregularities in the surface may form nucleation sites for cracks or corrosion. In this study, the impact of mold material and coating on surface finish in sand casting was investigated. By using different kind of material to make the mold and evaluating whether coating give effect to product surface finish, the experiment had been done in 4 different tests by using sand casting process as a method to make the final product. In sand casting process, mold material and coating are two significant concerns, but they have different impact in surface finish. In producing part using sand casting, analyzing test is commonly made between these two features to get good quality surface finish. A result among these two different parameters concerns can be achieved by getting the experiment done which on the other hand, selection of better mold material and use of coating will further provide an improved solution. In this thesis, efforts towards determining good surface finish will be decide using different mold properties and coating. The quality of the surface roughness is determined by using visual and analysis. This Surface Roughness is obtained based on the analyzed using MAHR Perthometer s2. In this present work, the main objective of this study is to analyze the effect of coating between two patterns and decide which one has a better surface finish and to compare mold material whether carbon dioxide, CO2 molding or Greensand molding with and without coating and their effect in product surface finish. The standard design approach is implemented in this experimental study where it only consists of 2 factors at one time which are coating and mold material.2 patterns and 4 final products are produced, whereby the study output is surface roughness, Ra (µm). In this study, MAHR Perthometer s2 is used to measure the surface roughness. The comparison between pattern and product will be analyzed. From the findings, it is shown that that product that used carbon dioxide CO2 as mold material and covered with coating has the best surface finish. Based on the study analysis, it is discovered that using green sand as mold material and not using coating produces poor surface finish while carbon dioxide CO2 with coating produces good surface finish products.
Optical FFT/IFFT circuit realization using arrayed waveguide gratings and the applications in all-optical OFDM system (2011)

Arrayed waveguide gratings (AWG) are widely used as wavelength division multiplexers (MUX) and demultiplexers (DEMUX) in optical networks. Here we propose and demonstrate that conventional AWGs can also be used as integrated spectral filters to realize a Fast Fourier transform (FFT) and its inverse form (IFFT). More specifically, we point out that the wavelength selection conditions of AWGs when used as wavelength MUX/DEMUX also enable them to perform FFT/IFFT functions. Therefore, previous research on AWGs can now be applied to optical FFT/IFFT circuit design. Compared with other FFT/IFFT optical circuits, AWGs have less structural complexity, especially for a large number of inputs and outputs. As an important application, AWGs can be used in optical OFDM systems. We propose an all-optical OFDM system with AWGs and demonstrate the simulation results. Overall, the AWG provides a feasible solution for all-optical OFDM systems, especially with a large number of optical subcarriers.
PP.42.14 (2015)

Objective: Gelsolin (GSN) is a member of the actin-binding proteins (ABPs), which regulate dynamic actin filament organization by severing and capping. Moreover, GSN also regulates cell morphology, differentiation, movement, and apoptosis. Design and method: In this study, we used H9c2 and H9c2-GSN stable clones, in an attempt to understand the mechanisms of GSN overexpression in cardiomyocytes. Results: This data showed that the overexpression of GSN in H9c2 induced cardiac hypertrophy and increased the pathological hypertrophy markers atrial natriuretic peptide (ANP) brain natriuretic peptide (BNP). Furthermore, we found that E-cadherin expression decreased with the overexpression of GSN in H9c2, but ß-catenin expression increased. These data presume that the cytoskeleton is loose. Further, previous studies show that the mitogen-activated protein kinase (MAPK) pathway can induce cardiac hypertrophy. Our data showed that p-p38 expression increased with the overexpression of GSN in H9c2, and the transcription factor p-GATA4 expression also increased, suggesting that the overexpression of GSN in H9c2-induced cardiac hypertrophy seemed to be regulated by the p38/GATA4 pathway. Moreover, we used both the p38 inhibitor (SB203580) and GSN siRNA to confirm our conjecture. We found that both of these factors significantly suppressed gelsolin-induced cardiac hypertrophy which through p38/GATA4 signaling pathway. Conclusions: Therefore, we predict that the gene silencing of GSN and/or the downstream blocking of GSN along the p38 pathway could be applied to ameliorate pathological cardiac hypertrophy in the future.
First Synthesis of Cytotoxic 8,9-Secokaurene Diterpenoids. An Enantioselective Route to (−)-<i>O</i>-Methylshikoccin and (+)-<i>O</i>-Methylepoxyshikoccin (1997)

A practical route for the total synthesis of 8,9-secokaurene diterpenes is described. The central step is the [3.3]sigmatropic rearrangement of spirocyclic intermediates such as 35, 40, and 41. All three compounds must necessarily respond identically to properly install the absolute configuration of the bridgehead methine carbon. The total synthesis of (−)-O-methylshikoccin (2b) was realized in 8% overall yield from the Wieland−Miescher ketone 9. Its naturally occurring epoxide 47 was prepared with comparable efficiency. The preparative route developed herein should provide a general entry into this important class of diterpenoids.
Applications of multi-spectral imaging: failsafe industrial flame detector (2016)

Industrial and petrochemical facilities present unique challenges for fire protection and safety. Typical scenarios include detection of an unintended fire in a scene, wherein the scene also includes a flare stack in the background. Maintaining a high level of process and plant safety is a critical concern. In this paper, we present a failsafe industrial flame detector which has significant performance benefits compared to current flame detectors. The design involves use of microbolometer in the MWIR and LWIR spectrum and a dual band filter. This novel flame detector can help industrial facilities to meet their plant safety and critical infrastructure protection requirements while ensuring operational and business readiness at project start-up.
Intelligent Building System Engineering (2004)

With the development of information technology, intelligent buildings have been developed rapidly over the world. The intellignet building' s concept, construction, function, characteristics and develop trend were described, it should be helpful to improve intelligent building technology in our country.
Electrical Properties of Bulk Silicon Dioxide and SiO[sub 2]/Si Interface Formed by Tetraethylorthosilicate-Ozone Chemical Vapor Deposition (2000)

Silicon oxide films have been deposited with chemical vapor deposition from TEOS/O-3 at low temperature below 400 degrees C for the gate insulator of thin-film transistors. The electrical properties of the bulk silicon oxide film and the SiO2/Si interface were investigated as a function of process parameters such as deposition temperature and TEOS/O-3 ratio using capacitance-voltage and current-voltage measurements. The breakdown strength increased and the leakage current decreased as the deposition temperature increased, but both were not significantly dependent on the TEOS/O-3 ratio. The breakdown strength of the film deposited at 380 degrees C was about 5 MV/cm. As the deposition temperature increased, the interface trap density (D-it) at Si midgap was almost constant, but D-it near E-v + 0.25 eV and E-v + 0.75 eV, which is the P-b center, decreased. The interface trap density was lowest when the TEOS/O-3 ratio was 0.35. It was confirmed that the deposition temperature influenced the electrical properties of the bulk oxide and the interface, but the TEOS/O-3 ratio affected only the interface properties. (C) 2000 The Electrochemical Society. S0013-4651(99)07-045-7. All rights reserved.
Managing Liberalization, Regionalism and Globalization in the Next 50 Years (2000)

As we look back over the last 50 years, we cannot but agree that we have much to be thankful for: trade liberalization through the efforts of GATT and its successor, the WTO, has borne astonishing fruits in the 14-fold increase in merchandise trade and the 5.5-fold rise in world production. This accomplishment is all the more amazing when one recalls that the predecessor organization, the GATT, had no real enforcement powers and unprecendented changes had to be accomodated in the global economy. More importantly, despite regional wars and conflicts, there has been no world war and no world depression. The long queue of 31 aspiring new members of WTO is further testimony to the importance and effectiveness of the organization. Nevertheless, we cannot be complacent.. After the break-up of the Soviet empire, many new players have entered the global market place: the so-called transition economies, Latin America, parts of Africa, and India. China, of course, embarked on the global scene since 1979. In addition, according to the Director-
The tetranuclear trianion [Fe4Te4(SC6H5)4]3-: crystal and molecular structure and magnetic properties (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe tetranuclear trianion [Fe4Te4(SC6H5)4]3-: crystal and molecular structure and magnetic propertiesPierluigi Barbaro, Alessandro Bencini, Ivano Bertini, Fabrizio Briganti, and Stefano MidolliniCite this: J. Am. Chem. Soc. 1990, 112, 20, 7238–7246Publication Date (Print):September 1, 1990Publication History Published online1 May 2002Published inissue 1 September 1990https://pubs.acs.org/doi/10.1021/ja00176a025https://doi.org/10.1021/ja00176a025research-articleACS PublicationsRequest reuse permissionsArticle Views180Altmetric-Citations38LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Immunity and nutrition : nutrition (2005)

Breastfeeding protects babies against infection and has long-term beneficial effects on metabolism and 
disease, later in life. Human milk is perfectly formulated to strengthen the newborn's defence mechanisms 
against organisms and foreign substances that may be harmful to the baby. This article will discuss the important role the gastrointestinal (GI) tract plays in the immunity of neonates.
Establishing the State of Operation on Vibration Behavior of the Industrial Robot (2012)

Diagnosis measurement of vibration and noise, should allow monitoring of equipment defects, through a system of preventive maintenance, predictive. Automatic diagnosis of machinery and equipment was made in order to ensure a higher reliability of these and how to obtain a more extended life cycle without the occurrence of defects. Vibrations are always measured in analog format (time domain) and must be transformed into the frequency domain. Therefore Fast Fourier Transform (FFT) method is used to evaluate vibration Almega AX-V6 robot. The application of preventive and predictive maintenance management supports enterprise, because it proves effective, the information you provide in making decisions.
Optical Properties of Ultraviolet Quantum Dot Light-Emitting Devices Using ZnO-Cores With a MgO-Shell (2015)

Colloidal quantum dots (QDs) with a ZnO core were synthesized with subsequent surface passivation by MgO. The photo-enhancement effect of the near band-edge photoluminescence (PL) in ZnO nanocrystals, dispersed in ethanol, is investigated by observing changes in the optical properties after ultraviolet (UV) exposure. Finally, the operation as a light-emitting device (LED) was demonstrated experimentally for these ZnO-based quantum dots (QDs). The results indicate that this type of QDs might enable the development of electroluminescent UV sources in the near future.
Drug conjugate of doxorubicin with glutathione is a potent reverser of multidrug resistance in rat hepatoma cells (1997)

A recent study has suggested that degraded adducts smaller than 2 kDa in molecular weight of bovine serum albumin (BSA)-conjugated doxorubicin (DXR) (BSA-DXR) might exhibit cytotoxicity against multidrug resistant (MDR) cells. To investigate this notion further, intracellular accumulation and cytotoxicity of DXR coupled to several small peptides, such as glycylglycine (diGly), glycylglycylglycine (triGly), reduced glutathione (GSH) and oxidized glutathione (GSSG), were investigated using DXR-sensitive (AH66P) and DXR-resistant (AH66DR) rat hepatoma cell lines. Against both AH66P and AH66DR cells, diGly-conjugated DXR (diGly-DXR) and triGly-conjugated DXR (triGly-DXR) demonstrated the same cytotoxic activity as DXR, and the accumulation of both conjugates in the two cell lines was almost similar to that of DXR. After treatment of AH66DR cells with 5 microM verapamil [an inhibitor of P-glycoprotein (Pgp)], the intracellular levels of diGly-DXR and triGly-DXR were markedly increased and consequent cytotoxicity was improved. On the other hand, GSH-conjugated DXR (GSH-DXR) showed 9- and 7.5-fold more cytotoxic activity than BSA-DXR against AH66P and AH66DR cells, respectively. GSH-DXR accumulated rapidly in AH66DR cells, probably by the same mechanism as in AH66P cells, because the treatment of AH66DR cells with verapamil did not cause a significant increase in the intracellular drug level as compared with that in cells treated without verapamil. The levels of cytotoxicity and accumulation of GSSG-DXR were the same as those of BSA-DXR for both cell lines. These results indicate that GSH-DXR exerts potent cytotoxicity against both cell lines among the peptide DXR conjugates examined because of the rapid uptake and high accumulation of GSH-DXR similar to that of DXR without efflux.
A general architecture of ATM switching networks which are non-blocking at call level (2003)

The simplest approach to compose a very large scale asynchronous transfer mode switching network is to compose it with only buffered unit switches. A practical architecture of such a switching network is studied and a generalized parallel delta network is proposed. It is composed by only one kind of n*n unit switch. The number of stages does not necessarily depend on the scale of the entire switching network. It is nonblocking at call level, and good cell-level traffic performance is expected. It is also very fault tolerant.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Magnetic properties of iron-boron-oxide and iron-phosphor-oxide glasses prepared by sol-gel method (1989)

The magnetic properties of powders made from dried gel were measured as a function of calcination temperature up to 600 degrees C. The magnetic moment of iron oxide was enhanced by adding a small amount of boron. A maximum moment of 49.5 emu/g, which is about a 20% increase over that of nondoped Fe-O powders, was obtained at the mol. ratio of B/(Fe+B)=0.2. Doping with phosphorus, on the contrary, diminishes the magnetic moment. In both cases, the magnetic moment is considered to originate from fine maghemite particles dispersed in a glass network. The addition of such glass-forming elements as boron and phosphorus suppresses the growth of iron-oxide particles as well as the crystallographic transition from maghemite to hematite at elevated calcination temperature. The suppression is more pronounced for phosphorus than for boron. In addition, Fe B-O thin films were prepared by spin-coating an Fe-B-O gel solution on glass substrates. A large magnetization exceeding 3 kG was obtained after the gel was dried at 200 degrees C in air and subsequently annealed at 400 degrees C in a vacuum. It is found that a key factor in the realization of films with large magnetization is to dry the coated gel at low temperature. X-ray diffraction of the films shows a hollow pattern, indicating that they consist of very fine maghemite particles.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Adenosine Inhibits Collagen and Protein Synthesis in Cardiac Fibroblasts (1998)

The objective of this study was to characterize the effects of exogenous and endogenous (cardiac fibroblast-derived) adenosine on [3H]proline and [3H]leucine incorporation, which are reliable markers of collagen and total protein synthesis, respectively, in rat left ventricular cardiac fibroblasts. Growth-arrested confluent cardiac fibroblast monolayers were stimulated with 2.5% fetal calf serum (FCS) in the presence and absence of adenosine, 2-chloroadenosine (stable adenosine analogue), or modulators of adenosine levels including (1) erythro-9-(2-hydroxy-3-nonyl) adenine (adenosine deaminase inhibitor), (2) dipyridamole (adenosine transport blocker), and (3) iodotubericidin (adenosine kinase inhibitor). All agents inhibited in a concentration-dependent fashion FCS-induced [3H]proline and [3H]leucine incorporation. These effects were blocked by KF17837 (selective A2 antagonist) and 1,3-dipropyl-8-(p-sulfophenyl)xanthine (A1/A2 receptor antagonist) but not by 8-cyclopentyl-1,3-dipropylxanthine (selective A1 antagonist), thus excluding the participation of A1 receptors. The lack of effect of CGS21680 (selective A2A agonist) excluded involvement of A2A receptors, thus suggesting a major role for A2B receptors. Comparisons of the inhibitory potencies of N6-cyclopentyladenosine (selective A1 agonist), 5'-N-ethylcarboxamidoadenosine (A1/A2 agonist), and 5'-N-methylcarboxamidoadenosine (A1/A2 agonist) were consistent with that of an A2B receptor subtype mediating the inhibitory effects. We conclude that adenosine inhibits FCS-induced collagen and total protein synthesis in cardiac fibroblasts via activation of A2B receptors. These studies suggest, but do not prove, that endogenous adenosine may protect against cardiac fibrosis.
Cobalt(II) cyanides in aprotic media: effect of varying counterion and solvent (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCobalt(II) cyanides in aprotic media: effect of varying counterion and solventStephen J. Carter, Bruce M. Foxman, and Louis S. StuhlCite this: Inorg. Chem. 1986, 25, 16, 2888–2894Publication Date (Print):July 1, 1986Publication History Published online1 May 2002Published inissue 1 July 1986https://pubs.acs.org/doi/10.1021/ic00236a046https://doi.org/10.1021/ic00236a046research-articleACS PublicationsRequest reuse permissionsArticle Views168Altmetric-Citations16LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts