gebhart/patrepeval huggingface dataset:
Photochemical reactions of [CH<sub>2</sub>(η<sup>5</sup>-C<sub>5</sub>H<sub>4</sub>)<sub>2</sub>][Rh(C<sub>2</sub>H<sub>4</sub>)<sub>2</sub>]<sub>2</sub>with silanes: evidence for Si–C and C–H activation pathways (2005)

Photochemical reaction of [CH2(eta5-C5H4)2][Rh(C2H4)2]2 1 with dmso led to the stepwise formation of [CH2(eta5-C5H4)2][Rh(C2H4)2][Rh(C2H4)(dmso)] 2a and [CH2(eta5-C5H4)2][Rh(C2H4)(dmso)]2 2b. Photolysis of 1 with vinyltrimethylsilane ultimately yields three isomeric products of [CH2(eta5-C5H4)2][Rh(CH2=CHSiMe3)2]2, 3a, 3b and 3c which are differentiated by the relative orientations of the vinylsilane. When this reaction is undertaken in d6-benzene, H/D exchange between the solvent and the alpha-proton of the vinylsilane is revealed. In addition evidence for two isomers of the solvent complex [CH2(eta5-C5H4)2][Rh(C2H4)2][Rh(C2H4)(eta2-toluene)] was obtained in these and related experiments when the photolysis was completed at low temperature without substrate, although no evidence for H/D exchange was observed. Photolysis of 1 with Et3SiH yielded the sequential substitution products [CH2(eta5-C5H4)2][Rh(C2H4)2][Rh(C2H4)(SiEt3)H] 4a, [CH2(eta5-C5H4)2][Rh(C2H4)(SiEt3)H]2 4b, [CH2(eta5-C5H4)2][Rh(C2H4)(SiEt3)H][Rh(SiEt3)2(H)2] 4c and [CH2(eta5-C5H4)2][Rh(SiEt3)2(H)2]2 4d; deuteration of the alpha-ring proton sites, and all the silyl protons, of 4d was demonstrated in d6-benzene. This reaction is further complicated by the formation of two Si-C bond activation products, [CH2(eta5-C5H4)2][RhH(mu-SiEt2)]2 5 and [CH2(eta5-C5H4)2][(RhEt)(RhH)(mu-SiEt2)2] 6. Complex 5 was also produced when 1 was photolysed with Et2SiH2. When the photochemical reactions with Et3SiH were repeated at low temperatures, two isomers of the unstable C-H activation products, the vinyl hydrides [CH2(eta5-C5H4)2][{Rh(SiEt3)H}{Rh(SiEt3)}(mu-eta1,eta2-CH=CH2)] 7a and 7b, were obtained. Thermally, 4c was shown to form the ring substituted silyl migration products [(eta5-C5H4)CH2(C5H3SiEt3)][Rh(SiEt3)2(H)2]2 8 while 4b formed [CH2(C5H3SiEt3)2][Rh(SiEt3)2(H)2]2 (9a and 9b) upon reaction with excess silane. The corresponding photochemical reaction with Me3SiH yielded the expected products [CH2(eta5-C5H4)2][Rh(C2H4)2][Rh(C2H4)(SiMe3)H] 10a, [CH2(eta5-C5H4)2][Rh(C2H4)(SiMe3)H]2 10b, [CH2(eta5-C5H4)2][Rh(C2H4)(SiMe3)H][Rh(SiMe3)2(H)2] 10c and [CH2(eta5-C5H4)2][Rh(SiMe3)2(H)2]2 10d. However, three Si-C bond activation products, [CH2(eta5-C5H4)2][(RhMe)(RhH)(mu-SiMe2)2] 11, [CH2(eta5-C5H4)2][(Rh{SiMe3})(RhMe)(mu-SiMe2)2] 12 and [CH2(eta5-C5H4)2][(Rh{SiMe3})(RhH)(mu-SiMe2)2] 13 were also obtained in these reactions.
Oxidative coupling of methane over a La<sub>2</sub>O<sub>3</sub>/CaO catalyst. Optimization of reaction conditions in a bubbling fluidized‐bed reactor (1996)

Abstract Oxidative coupling of methane over a La 2 O 3 /CaO catalyst was investigated in laboratory‐scale fluidized‐bed reactors (ID = 5 and 7 cm) in the following range of reaction conditions: T = 700 – 880°C, P = 41 – 72 kPa and P = 6 – 29 kPa. The maximum C 2+ selectivity and yield amounted to 73.8% ( T = 800°C, X = 13.1%, Y = 9.7%) and 16.0% ( T = 840°C, X = 34.0%, S = 47.2%), respectively. Axial gas concentration profiles revealed that C 2+ selectivity was not only influenced by oxidative consecutive reactions, but also by steam reforming of ethylene. When diluting the catalytic bed ( m cat = 145 g) with quartz ( m = 200 and 400 g), a slight decrease of the selectivity (1–2%) was observed. The dilution of the feed gas with nitrogen only led to only a small increase (< 2%) of the C 2+ selectivity.
Ytterbium(III) Trifluoromethanesulfonate & Ytterbium(III) Trifluoromethanesulfonate Hydrate (2004)

[54761-04-5] C3F9O9S3Yb (MW 620.28) InChI = 1S/3CHF3O3S.Yb/c3*2-1(3,4)8(5,6)7;/h3*(H,5,6,7);/q;;;+3/p-3 InChIKey = AHZJKOKFZJYCLG-UHFFFAOYSA-K [314041-23-1] C3F9O9S3Yb·xH2O (x = 1–2) (MW 620.28) (organometallics derived from addition of organolithiums or organomagnesiums to Yb(OTf)3 display enhanced diastereoselectivities in the carbonyl addition to chiral ketones and aldehydes;2 functions as a Lewis acid in promoting a variety of reactions including aldol, hydroxymethylation, allylation, Mannich-type, cycloaddition, and Friedel–Craft and radical reactions.4 Due to the stability of Yb(OTf)3 in water, several of the above reactions can be performed efficiently in aqueous media) Alternate Name: ytterbium(III) triflate. Preparative Methods: prepared by addition of an excess of ytterbium(III) oxide (commercially available, 99.9%) to an aqueous solution of Trifluoromethanesulfonic Acid (50% v/v) followed by heating at boiling for 0.5–1 h. The mixture is then purified by filtration to remove unreacted ytterbium oxide; residual water is removed under reduced pressure. The resultant hydrate is dried by heating under vacuum (1 mmHg) at 180 to 200 °C for 48 h. The reagent is then used without further purification.1 The organoytterbium reagent is prepared at −78 °C from Yb(OTf)3 and organolithiums or organomagnesiums.2 Chiral ytterbium complex can be prepared in situ by mixing Yb(OTf)3 and a chiral ligand in an appropriate solvent. Handling, Storage, and Precautions: subject to hydrate formation in aqueous media in the presence of amines;1 however, it survives mild aqueous workup.4
Multiple Light Scattering Methods for Dispersion Characterization and Control of Particulate Processes (2004)

This work concerns multiple light scattering methods for the characterization of concentrated dispersions. After recall of the wave transport theory and some experimental means for analyzing incoherent wave propagation in heterogeneous media, the present paper concerns a new imagery method for the optical characterization of concentrated dispersions and applications in the field of industrial processes.
The rank of sparse random matrices over finite fields (1997)

Let M be a random (n×n)-matrix over GF[q] such that for each entry Mij in M and for each nonzero field element α the probability Pr[Mij=α] is p/(q−1), where p=(log n−c)/n and c is an arbitrary but fixed positive constant. The probability for a matrix entry to be zero is 1−p. It is shown that the expected rank of M is n−(1). Furthermore, there is a constant A such that the probability that the rank is less than n−k is less than A/qk. It is also shown that if c grows depending on n and is unbounded as n goes to infinity, then the expected difference between the rank of M and n is unbounded. © 1997 John Wiley & Sons, Inc. Random Struct. Alg.,10, 407–419, 1997
Conophylline suppresses hepatic stellate cells and attenuates thioacetamide‐induced liver fibrosis in rats (2013)

Conophylline suppresses HSC and induces apoptosis in vitro. CnP also attenuates formation of the liver fibrosis induced by TAA in vivo.
Gated-four-probe a-Si:H thin-film transistor structure (2002)

In a-Si:H TFTs, the source/drain series resistances not only influence the TFT electrical performance but also cause difficulties in optimization of the channel material. To understand the intrinsic characteristics of a-Si:H TFTs, the source/drain series resistances have to be excluded. Source/drain series resistances in a-Si:H TFTs consist of: (1) contact resistances (between the source/drain metal and the n/sup +/ a-Si:H layer) and n/sup +/ a-Si:H film resistance; (2) bulk resistance (due to the intrinsic a-Si:H layer between the n/sup +/ a-Si:H and the conducting channel); (3) resistances associated with the overlap between the source/drain and gate electrodes. To analyze the influence and the origin of source/drain series resistances, we have developed a new gated-four-probe (GFP) a-Si:H TFT structure to accurately measure the intrinsic characteristics of a-Si:H TFTs. In the GFP a-Si:H TFT structure, two narrow probes are placed between the source and drain electrodes to sense the voltage difference along the conducting channel. By correlating this voltage difference to the source/drain current induced by applied gate bias, the a-Si:H TFT intrinsic characteristics, such as mobility, threshold voltage, and channel conductance activation energy can be accurately determined without any influence from the source/drain series resistances. Another function of the GFP a-Si:H TFT structure is to investigate the electrical instability mechanisms responsible for gate bias-stress induced apparent threshold voltage shifts.
Transport and magnetic properties of laser ablated La0.7Ce0.3MnO3 films on LaAlO3 (1999)

La 0.7 Ce 0.3 MnO 3 is a relatively new addition to the family of colossal magnetoresistive manganites, in which the cerium ion is believed to be in the Ce4+ state. In this article, we report the magnetotransport properties of laser ablated La0.7Ce0.3MnO3 films on LaAlO3, and the effect of varying the ambient oxygen pressure during growth and the film thickness. We observe that the transport and magnetic properties of the film depend on the oxygen pressure, surface morphology, film thickness, and epitaxial strain. The films were characterized by x-ray diffraction using a four-circle goniometer. We observe an increase in the metal-insulator transition temperature with decreasing oxygen pressure. This is in direct contrast to the oxygen pressure dependence of La0.7Ca0.3MnO3 films and suggests the electron doped nature of the La0.7Ce0.3MnO3 system. With decreasing film thickness we observe an increase in the metal-insulator transition temperature. This is associated with a compression of the unit cell in the a-b plane due to epitaxial strain. On codoping with 50% Ca at the Ce site, the system (La0.7Ca0.15Ce0.15MnO3) is driven into an insulating state suggesting that the electrons generated by Ce4+ are compensated by the holes generated by Ca2+, thus making the average valence at the rare-earth site 3+ as in the parent material LaMnO3.
New Age Strategies To Reconstruct Mucosal Tissue Colonization and Growth in Cell Culture Systems (2019)

Over the past few decades, <i>in vitro</i> cell culture systems have greatly expanded our understanding of host-pathogen interactions. However, studies using these models have been limited by the fact that they lack the complexity of the human body. Therefore, recent efforts that allow tissue architecture to be mimicked during <i>in vitro</i> culture have included the development of methods and technology that incorporate tissue structure, cellular composition, and efficient long-term culture. These advances have opened the door for the study of pathogens that previously could not be cultured and for the study of pathophysiological properties of infection that could not be easily elucidated using traditional culture models. Here we discuss the latest studies using organoids and engineering technology that have been developed and applied to the study of host-pathogen interactions in mucosal tissues.
Multistatic Target and Sensor Field Tracking (2007)

Multistatic active target tracking in GPS-denied scenarios is complicated by the fact that the emitter and receiver locations are unknown and must be estimated jointly with the target track. Maximum a posteriori algorithms for solving this joint estimation problem are complicated by the nonlinearities in the likelihood function of the bistatic range measurement. A new integral representation of this likelihood function is presented for small measurement error variances. Remarkably, target state appears linearly in this integral. This paper presents a new approach to the basic problem of target state estimation for known sensor locations. The optimal estimator derived from the integral representation is an iteratively re-weighted linear Kalman smoother. Joint estimators for target and emitter-receiver field tracking will be reported elsewhere.
<title>Improvements in 0.5-micron production wafer steppers</title> (1991)

i-line wafer steppers have become the tool of choice for submicron production of advanced integrated circuits. These tools are now being extended to provide the required resolution, linewidth control, and overlay performance for devices with 16 Mb packing densities. To achieve this a manufacturing environment, suitable control procedures should be designed to minimize process and equipment variations. The primary goal of this paper is to characterize and quantify the ability of current generation steppers to meet or exceed the 100 nm AA (single machine) and the 175 nm BC (stepper to any other stepper in a production area) overlay requirements for half-micron production. For this, an overlay experiment using one reference and 12 randomly selected steppers was performed. Two Point through the lens alignment was used to reference wafer to reticle. Stages with three interferometrically controlled axes having both standard and enhanced resolution were used in the experiment. Features to improve stage positioning and overlay accuracy are discussed. To generate the required data, accurately calibrated reference wafers are used. The results were compared with a metrology model, which was used to optimize the matching of stepper lens and stage grid distortions so that optimum matching performance is achieved. The results then clearly predict whether all steppers meet the stringent overlay requirements for half-micron lithography in a production environment. In addition, experimental results show half-micron resolution performance with a number of commercially available i-line photoresists. Lens performance as affected by a phase-shifted reticle tooling are also examined to determine its potential benefit to 0.5 micron and sub-0.5 micron production.
Possible Evidence for Helical Nuclear Spin Order in GaAs Quantum Wires (2014)

We present transport measurements of cleaved edge overgrowth GaAs quantum wires. The conductance of the first mode reaches 2e(2)/h at high temperatures T≳10 K, as expected. As T is lowered, the conductance is gradually reduced to 1e(2)/h, becoming T independent at T≲0.1 K, while the device cools far below 0.1 K. This behavior is seen in several wires, is independent of density, and not altered by moderate magnetic fields B. The conductance reduction by a factor of 2 suggests lifting of the electron spin degeneracy in the absence of B. Our results are consistent with theoretical predictions for helical nuclear magnetism in the Luttinger liquid regime.
Nicodemi and Jensen Reply: (2001)

A Reply to the Comment by G. A. Levin.Received 3 July 2001DOI:https://doi.org/10.1103/PhysRevLett.87.259702©2001 American Physical Society
Research and development of the dry tape battery concept Final report, 1 Jul. 1967 - 30 Jun. 1968 (1968)

Dry tape electrochemical battery development using lithium and dichloroisocyanuric acid to produce 200 W-Hr/lb
Increases in Plasma Concentration of Progesterone by Protease-Sensitive Urinary Pheromones in Female Rats (2005)

Plasma progesterone concentrations in female Wistar rats after exposure to urine preparations with and without protease-treatment were measured to explore the effects of protease-sensitive pheromones on the endocrine state. Exposure to crude urine excreted from male rats induced an increase in the plasma progesterone concentration in female rats. The progesterone concentration of oestrous females increased with an increase in the protein concentration in urine samples. Exposure of females in the oestrous state to urine preparations treated with protease did not induce increases in plasma progesterone. These results suggest that the presence of a protease-sensitive component in male urine exerts an influence on the endocrine state of oestrous females.
P4‐399: THE USE OF VISUAL MAPS AS HABIT BASED ASSISTIVE TECHNOLOGY FOR INDIVIDUALS WITH ALZHEIMER'S DISEASE, ALZHEIMER'S DISEASE RELATED DEMENTIAS, AND THEIR CAREGIVERS (2019)

In providing information to memory-impaired individuals, the standard of practice has been to use short paragraphs of descriptive text. Here we ask whether pictorial approaches (visual maps) might be more helpful in providing information to memory-impaired individuals. A total of 380 healthcare professionals enrolled in two, full-day, continuing medical education (CME) workshops on brain and memory, were shown a slide depicting two methods of providing information to memory-impaired individuals. One side of the slide showed a series of short paragraphs of text positioned vertically, to be read from top to bottom, describing the details of a visit to the movies. The other side of the slide depicted the same episode using a series of pictures placed vertically from top to bottom (a visual map), with little or no text (see Figures, including medications map). Attendees were given 3 minutes to view the slide. They were then were asked, by show of hands, to indicate whether they believed information from the text depiction would be better remembered by individuals with impaired memory, or whether information from the visual map would be better remembered. Votes were counted by a workshop assistant. Approximately 20% of attendees in each of the two workshops did not vote (all attendee numbers are approximate, because workshop attendees move in and out of room for bio-breaks, coffee, etc.). Of the approximately 304 attendees who cast votes, the overwhelming majority favored the visual map approach. Specifically, 150 of the 160 voting attendees in one workshop and 141 of the 144 voting attendees in the other workshop voted for the visual map version. A total of 13 attendees in each of the two workshops voted for the text version.
Discriminative Hypomania Checklist-32 Factors in Unipolar and Bipolar Major Depressive Patients (2012)

Although some false positives might occur, the HCL-32 was confirmed to be a useful instrument in the detection of past hypomania in MDD patients, finally contributing to proper therapeutic choices.
Polyquinoxalines Containing Flexibilizing Groups in the Chains (1970)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolyquinoxalines Containing Flexibilizing Groups in the ChainsW. Wrasidlo and J. M. AuglCite this: Macromolecules 1970, 3, 5, 544–547Publication Date (Print):September 1, 1970Publication History Published online1 May 2002Published inissue 1 September 1970https://pubs.acs.org/doi/10.1021/ma60017a014https://doi.org/10.1021/ma60017a014research-articleACS PublicationsRequest reuse permissionsArticle Views122Altmetric-Citations40LEARN 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
Arterial mechanics in the fin whale suggest a unique hemodynamic design (1994)

An analysis of the dimensions of the aortic tree and the mechanical properties of arterial wall tissues in the fin whale (Balaenoptera physalus) is presented. The aortic arch is greatly expanded, having an internal radius at an estimated mean blood pressure (13 kPa) that is 2.5 times greater than that of the descending thoracic aorta. At this pressure, the elastic modulus of the arch wall (0.4 MPa) is 30 times less than that of the descending aorta (12 MPa). Consequently, even though some capacitance is provided anteriorly by the relatively compliant innominate and carotid arteries, > 90% of the arterial capacitance resides in the arch. The characteristic pressure wave velocity (C0) and impedance (Z0) were calculated from vessel dimensions and elasticity. A predicted 20-fold increase in Z0 between the arch and thoracic aorta should provide a major reflecting site, effectively uncoupling the arch from the remainder of the arterial tree. The dimensions of the arch relative to the likely pressure wavelengths within it suggest that it acts like a compliant windkessel that greatly reduces the pulsatility of the inflow to the descending aorta, which itself likely acts as a rigid, tapered manifold. It is suggested that the presence of both a highly compliant arch and a relatively rigid descending aorta is an adaptation for diving.
Calmodulin Kinase II Constitutively Binds, Phosphorylates, and Inhibits Brush Border Na+/H+ Exchanger 3 (NHE3) by a NHERF2 Protein-dependent Process (2012)

The epithelial brush border (BB) Na(+)/H(+) exchanger 3 (NHE3) accounts for most renal and intestinal Na(+) absorption. Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) inhibits NHE3 activity under basal conditions in intact intestine, acting in the BB, but the mechanism is unclear. We now demonstrate that in both PS120 fibroblasts and polarized Caco-2BBe cells expressing NHE3, CaMKII inhibits basal NHE3 activity, because the CaMKII-specific inhibitors KN-93 and KN-62 stimulate NHE3 activity. This inhibition requires NHERF2. CaMKIIγ associates with NHE3 between aa 586 and 605 in the NHE3 C terminus in a Ca(2+)-dependent manner, with less association when Ca(2+) is increased. CaMKII inhibits NHE3 by an effect on its turnover number, not changing surface expression. Back phosphorylation demonstrated that NHE3 is phosphorylated by CaMKII under basal conditions. This overall phosphorylation of NHE3 is not affected by the presence of NHERF2. Amino acids downstream of NHE3 aa 690 are required for CaMKII to inhibit basal NHE3 activity, and mutations of the three putative CaMKII phosphorylation sites downstream of aa 690 each prevented KN-93 stimulation of NHE3 activity. These studies demonstrate that CaMKIIγ is a novel NHE3-binding protein, and this association is reduced by elevated Ca(2+). CaMKII inhibits basal NHE3 activity associated with phosphorylation of NHE3 by effects requiring aa downstream of NHE3 aa 690 and of the CaMKII-binding site on NHE3. CaMKII binding to and phosphorylation of the NHE3 C terminus are parts of the physiologic regulation of NHE3 that occurs in fibroblasts as well as in the BB of an intestinal Na(+)-absorptive cell.
Thread Migration Prediction for Distributed Shared Caches (2012)

Chip-multiprocessors (CMPs) have become the mainstream parallel architecture in recent years; for scalability reasons, designs with high core counts tend towards tiled CMPs with physically distributed shared caches. This naturally leads to a Non-Uniform Cache Access (NUCA) design, where on-chip access latencies depend on the physical distances between requesting cores and home cores where the data is cached. Improving data locality is thus key to performance, and several studies have addressed this problem using data replication and data migration. In this paper, we consider another mechanism, hardware-level thread migration. This approach, we argue, can better exploit shared data locality for NUCA designs by effectively replacing multiple round-trip remote cache accesses with a smaller number of migrations. High migration costs, however, make it crucial to use thread migrations judiciously; we therefore propose a novel, on-line prediction scheme which decides whether to perform a remote access (as in traditional NUCA designs) or to perform a thread migration at the instruction level. For a set of parallel benchmarks, our thread migration predictor improves the performance by 24% on average over the shared-NUCA design that only uses remote accesses.