gebhart/patrepeval huggingface dataset:
Selective Calixarene‐Directed Synthesis of MXene Plates, Crumpled Sheets, Spheres, and Scrolls (2017)

Fully exploiting the electronic and mechanical properties of 2D laminar materials not only requires efficient and effective means of their exfoliation into low dimensional layers, but also necessitates a means of changing their morphology so as to explore any enhancement that this may offer. MXenes are a rapidly emerging new class of such laminar materials with unique properties. However, access to other morphologies of MXenes has not yet been fully realised. To this end we have developed the synthesis of MXenes (Ti<sub>2</sub> C) as plates, crumpled sheets, spheres and scrolls, which involves selective intercalation of p-phosphonic calix[n]arenes, with control in morphology arising from the choice of the size of the macrocycle, n=4, 5, 6, or 8. This opens up wider avenues of discovery/design for new morphologies from the wider family of MXenes beyond Ti<sub>2</sub> C, along with opportunities to exploit any new physico-chemical properties proffered.
Phase Manipulation of Free-space THz Pulses using Transmissive Optics (1999)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text A. B. Ruffin, J. V. Rudd, S. Feng, H. G. Winful, and J. F. Whitaker, "Phase Manipulation of Free-space THz Pulses using Transmissive Optics," in Ultrafast Electronics and Optoelectronics, J. Bowers and W. Knox, eds., Vol. 28 of OSA Trends in Optics and Photonics (Optica Publishing Group, 1999), paper UWA6. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Rate-Splitting Multiple Access in Cache-Aided Cloud-Radio Access Networks (2021)

Rate-splitting multiple access (RSMA) has been recognized as a promising physical layer strategy for 6G. Motivated by the ever-increasing popularity of cache-enabled content delivery in wireless communications, this paper proposes an innovative multigroup multicast transmission scheme based on RSMA for cache-aided cloud-radio access networks (C-RAN). Our proposed scheme not only exploits the properties of content-centric communications and local caching at the base stations (BSs) but also incorporates RSMA to better manage interference in multigroup multicast transmission with statistical channel state information (CSI) known at the central processor (CP) and the BSs. At the RSMA-enabled cloud CP, the message of each multicast group is split into a private and a common part with the former private part being decoded by all users in the respective group and the latter common part being decoded by multiple users from other multicast groups. Common message decoding is done for the purpose of mitigating the interference. In this work, we jointly optimize the clustering of BSs and the precoding with the aim of maximizing the minimum rate among all multicast groups to guarantee fairness serving all groups. The problem is a mixed-integer nonlinear stochastic program (MINLSP), which is solved by a practical algorithm we propose including a heuristic clustering algorithm for assigning a set of BSs to serve each user followed by an efficient iterative algorithm that combines the sample average approximation (SAA) and weighted minimum mean square error (WMMSE) to solve the stochastic non-convex subproblem of precoder design. Numerical results show the explicit max-min rate gain of our proposed transmission scheme compared to the state-of-the-art trivial interference processing methods. Therefore, we conclude that RSMA is a promising technique for cache-aided C-RAN.
Liquid Microjunction Surface Sampling Probe Fluid Dynamics: Characterization and Application of an Analyte Plug Formation Operational Mode (2011)

The recently discovered sample plug formation and injection operational mode of a continuous flow, coaxial tube geometry, liquid microjunction surface sampling probe (LMJ-SSP) was further characterized and applied for concentration and mixing of analyte extracted from multiple areas on a surface and for nanoliter-scale chemical reactions of sampled material. A transparent LMJ-SSP was constructed and colored analytes were used so that the surface sampling process, plug formation, and the chemical reactions could be visually monitored at the sampling end of the probe before being analyzed by mass spectrometry of the injected sample plug. Injection plug peak widths were consistent for plug hold times as long as the 8 min maximum attempted (RSD below 1.5%). Furthermore, integrated injection peak signals were not significantly different for the range of hold times investigated. The ability to extract and completely mix individual samples within a fixed volume at the sampling end of the probe was demonstrated and a linear mass spectral response to the number of equivalent analyte spots sampled was observed. Using the color and mass changing chemical reduction of the redox dye 2,6-dichlorophenol-indophenol with ascorbic acid, the ability to sample, concentrate, and efficiently run reactions within the same plug volume within the probe was demonstrated.
Case 13 (2013)

Case presentations focus on mapping techniques, diagnosis, and proper catheter placement for successful ablation of arrhythmias. This case focuses on palpitations, ventricular tachycardia, syncope, radiofrequency ablation, noncontact mapping, and the right and left ventricular outflow tracts.
Estimation of the spatial resolution of different high-frequency imaging systems using a novel anechoic sphere phantom (2010)

The spatial resolution of high-frequency ultrasound (HFU, >;20 MHz) imaging systems is usually determined using wires perpendicular to the beam. Recently, a tissue-mimicking phantom (TMP) was developed to estimate resolution in three dimensions (3D). The TMP consisted of eight slabs of anechoic spheres with diameters increasing from 0.1 to 1.09 mm. The ability of a HFU system to detect these spheres against a speckle background provides a realistic estimate of its 3D resolution. In the present study, the TMP was used with HFU systems using single-element transducers, linear arrays and annular arrays. The TMP was immersed in water and each slab was scanned using a VisualSonics <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">™</sup> Vevo 770 and Vevo 2100, and a custom HFU system based on a 5-element annular array with a nominal center frequency of 40 MHz, a focal length of 12 mm, and a total aperture of 6 mm. A synthetic focusing algorithm and a chirp excitation were used to increase the depth-of-field and penetration depth of the custom system, respectively. System performances were compared in terms of sphere detection and contrast-to-noise ratio (CNR). Resulting B-mode images indicated that all three HFU systems were able of detecting the 0.3 mm anechoic spheres, but only the annular-array system showed a sufficient CNR and depth-of-field to clearly resolve the 0.2 mm spheres deep into the phantom.
Erratum: Hexa-D-arginine treatment increases 7B2•PC2 activity in hyp-mouse osteoblasts and rescues the HYP phenotype (2013)

In [1], the authors report that a truncated gel image with discontinuous molecular weight markers was mistakenly published in Figure 1A.The corrected Figure 1A is shown in its entirety below, and the data presented are completely in accord with the figure previously published.The authors also report that inversion and subsequent grayscale conversion of the ethidium bromide gel image in Panel A of Supplementary Figure S2 introduced apparent image artifacts.To eliminate any ambiguity due to the grayscale conversion, the original gel image presented in Supplementary Figure S2A is shown in its entirety below.
Steering characteristics of motorcycles (2011)

In this study, the results of a steady-state cornering test using a sport-touring motorcycle and the analysis of those test results are presented. This test was conducted as an activity in our efforts to realise a quantitative development method for motorcycles. The measurement data from this test include measurement results for tyre force, tyre moment, and tyre slip angle that have not been practically addressed in the research of motorcycles, in addition to normal measurement results for velocity, steering angle, steering torque, roll angle, etc. Until now research on motorcycle dynamics characteristics has indicated that ‘there is a strong relationship between the motorcycle dynamics characteristics and the tyre slip angle’. However, since it is difficult to take highly precise measurements of the motorcycle’s tyre slip angle during actual riding, especially when the motorcycle is tilted during cornering, such measurements have been avoided, cf. [H. Ishii and Y. Tezuka, Considerations of turning performance for motorcycle, SETC (1997), pp. 383–389]. Nevertheless, in this research we attempted to measure the tyre slip angle and also attempted to investigate in detail the dynamics characteristics and tyre characteristics during riding. Until now there has not been an adequate investigation conducted under a variety of riding conditions, but it is the aim of this research to show that it is possible to measure the tyre slip angle with a reasonable accuracy. It is our opinion that this will open a new path to a more detailed investigation of the motorcycle’s dynamics characteristics. In addition, we conducted measurements using not only the normal rider’s lean angle (lean-with posture), but also measurements in the case where the rider’s lean angle was intentionally changed, in order to investigate the effects that a change in the rider’s posture has on the variation in the measurement results of the motorcycle’s dynamics. Furthermore, we then compared these measurement results with the results obtained from simulations. Additionally, steering index values were calculated from the measurement results.
Imaging the tip of the iceberg: visualization of cortical lesions in multiple sclerosis (2011)

MRI visibility of CLs is determined by lesion size, and not by any distinctive underlying pathology. Visible CLs are associated with a higher total cortical lesion load, which suggests that when CLs in patients with MS become detectable on MRI, they merely represent 'the tip of the pathological iceberg'.
Modular Peptide Growth Factors for Substrate‐Mediated Stem Cell Differentiation (2009)

The sequence specificity of the binding of a modular peptide growth factor (eBGa3) that contains a BMP2-derived sequence and a mineral-binding sequence inspired by osteocalcin to calcium ions of hydroxyapatite (HA) may be attributed in part to evolution of an α-helical structure in the presence of HA, which allows for registration of γ-carboxylated glutamic acid residues in the peptide (cyan) with calcium atoms (orange) in the HA crystal lattice.
ChemInform Abstract: General Approach to the Synthesis of Polyquinenes. Part 9. The Monofunctionalization and Alteration of the Symmetry of the cis‐Bicyclo‐(3.3.0)octane‐3,7‐dione Unit. (1989)

Abstract Cyclocondensation of the 1,2‐dicarbonyl compounds (I) with the β‐keto glutarates (II) gives the dihydroxy‐cis‐bicyclooctanetetracarboxylates (III) which are methylated with diazomethane (IV), producing the dimethoxy derivatives (V).
Organometallics Roundtable 2011 (2012)

We are living in an era of unprecedented change in academic, industrial, and government-based research worldwide, and navigating these rough waters requires “all hands on deck”. Toward this end, Organometallics has assembled a panel of seventeen experts who share their thoughts on a variety of matters of importance to our field. In constituting this panel, an attempt was made to secure representation from a number of countries and career stages, as well as from industry. We were fortunate that so many busy experts could take the time to spend with us. The following pages constitute an edited transcript of the panel discussion held on August 29, 2011, which was structured around the 10 questions summarized in the side bar and repeated below.
State of the metal and the mechanism of transformations of alkanes on platinum-containing zeolite catalysts (2009)

The structure and reactivity of Pt6 particles in silicalite and the sodium and hydrogen forms of zeolite ZSM-5 were investigated by density functional theory. In the case of adsorption on the sodium form and silicalite, the interaction energy is 15 and 9 kcal/mol, respectively, and a negative charge appears on the metal cluster. In the channels of the hydrogen form, the energy of absorption of a metal particle increases to 45 kcal/mol and oxidized platinum species is formed. The formation of the active center on the zeolite H-form involves the interaction of the platinum particle with an acid site, resulting in the suppression of the acidity of the support. An alternative alkane conversion mechanism is proposed, which avoids the involvement of the acid sites. Predictability of the direction of transformation of alkanes adsorbed on metal particles is shown.
Preinvasive Colorectal Lesions of African Americans Display an Immunosuppressive Signature Compared to Caucasian Americans (2021)

Overall, the lower RRs in AAs <i>vs.</i> CAs suggests reduced effector response capacity and an immunosuppressive ('cold') tumor environment. Our results also highlight the importance of colonic location of adenoma in influencing these differences; the reduced immune responses in AAs relative to CAs may indicate impaired immune surveillance in early carcinogenesis. Future studies are needed to understand the role of risk factors (such as obesity) in influencing differences in immune responses by race.
Thyroid hormone concentrations in rats after chronic nicotine metabolite administration (1984)

In an attempt to evaluate the observed relationship of chronic cigarette smoking and reduced thyroid hormone activity, the major urinary metabolites of nicotine were administered to rats for 78 weeks. The animals were divided equally into one control (n = 33) and three treatment groups. Treatment group 1 received 0.1% (w/v continine, group 2 received 0.02% pure trans-nicotine-N'-oxide, and group 3 received 0.02% of a trans/cis mixture (64/36%) of nicotine-N'-oxide. Plasma and urinary nicotine and cotinine concentrations were determined as well as a variety of thyroid hormone parameters. Pure trans-nicotine-N'-oxide was more extensively metabolized to its cotinine end product, relative to the diasteromeric N'-oxides, mixture. Serum triiodothyronine (T3) was markedly reduced in animals receiving nicotine-N'-oxides, but was not different in the cotinine treatment group when compared to control values. A reduction in serum thyroxine (T4) values was noted only among those rats receiving the pure trans-nicotine-N'-oxide. The T3/T4 ratio, free T3 index, T3 uptake, and rT3 were altered in animals receiving nicotine-N'-oxides. These findings indicate that specific nicotine metabolites alter thyroid hormone concentrations after chronic low-dose administration and possibly do so through back conversion to the parent compound, nicotine.
Pay-for-Performance (2007)

A pay-for-performance system in the management of spinal disorders should include both process variables that measure safety and outcome variables that reflect the end result of care.
Spectroscopic characterization of an electrophilic transition-metal-methylene complex, .eta.5-C5H5[(C6H5)2PCH2CH2P(C6H5)2]Fe:CH2+ (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic characterization of an electrophilic transition-metal-methylene complex, .eta.5-C5H5[(C6H5)2PCH2CH2P(C6H5)2]Fe:CH2+M. Brookhart, James R. Tucker, Thomas C. Flood, and John JensenCite this: J. Am. Chem. Soc. 1980, 102, 3, 1203–1205Publication Date (Print):January 1, 1980Publication History Published online1 May 2002Published inissue 1 January 1980https://pubs.acs.org/doi/10.1021/ja00523a068https://doi.org/10.1021/ja00523a068research-articleACS PublicationsRequest reuse permissionsArticle Views255Altmetric-Citations52LEARN 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
Generalized synchronization of chaos in noninvertible maps (2002)

The properties of functional relation between a noninvertible chaotic drive and a response map in the regime of generalized synchronization of chaos are studied. It is shown that despite a very fuzzy image of the relation between the current states of the maps, the functional relation becomes apparent when a sufficient interval of driving trajectory is taken into account. This paper develops a theoretical framework of such functional relation and illustrates the main theoretical conclusions using numerical simulations.
Oxygen Transfer from Mother to Fetus during Cesarean Section under Epidural Anesthesia (1982)

The correlation between maternal Pao2 levels and umbilical vein (UV) and umbilical artery (UA) Po2 levels was studied in 40 healthy patients undergoing elective cesarean sections under lumbar epidural anesthesia. Patients were divided into four equal groups. Each group inhaled oxygen at a Fio2 of 0.21, 0.47, 0.74 (in nitrogen), or 1.0. Maternal arterial samples and fetal UV and UA samples were collected at the time of delivery. Maternal Pao2 levels increased from 96 ± 4 (1 SE) torr during exposure to a Fio2 of 0.21 to 232 ± 6, 312 ± 16, and 423 ± 6 torr while breathing Fio2 of 0.47, 0.74 and 1.0, respectively. UV PO2 levels increased from 28 ± 1 to 36 ± 1.5, 41 ± 1.3 and 47 ± 1.2 torr in the hyperoxic groups. UA Po2 levels increased from 15 ± 0.7 to 19 ± 0.8, 21 ± 0.3, and 25 ± 1.8 torr, respectively. Oxygen saturation and blood O2 contents increased in maternal and fetal blood. Maternal arterial, UV, and UA base excess values in the hyperoxic groups were significantly higher than in the normoxic groups. There was no difference in 1− or 5-minute Apgar scores between the normoxic and hyperoxic groups. It is concluded that maternal hyperoxia improves fetal oxygen stores and acid-base status during cesarean section under epidural anesthesia.
Endothelial Gaps as Sites for Plasma Leakage in Inflammation (1999)

Taken together, the results show that endothelial gaps are a consistent feature of leaky vessels in the model system we studied, and are not an artifact of a particular method. The morphological complexity of the openings and accompanying fingerlike cell processes and overlapping endothelial cell borders make gaps difficult to distinguish from transcellular holes in thin sections viewed by transmission electron microscopy. However, scanning electron microscopic observations show that most of the openings in leaky venules are intercellular gaps, not transcellular holes. The formation and closure of gaps are likely to be energy-dependent, but the process of plasma leakage is not, provided there is adequate driving force for extravasation. The cellular mechanisms of gap opening and closure remain to be elucidated.
Evidence for GRN connecting multiple neurodegenerative diseases (2021)

Previous research using genome-wide association studies has identified variants that may contribute to lifetime risk of multiple neurodegenerative diseases. However, whether there are common mechanisms that link neurodegenerative diseases is uncertain. Here, we focus on one gene, <i>GRN</i>, encoding progranulin, and the potential mechanistic interplay between genetic risk, gene expression in the brain and inflammation across multiple common neurodegenerative diseases. We utilized genome-wide association studies, expression quantitative trait locus mapping and Bayesian colocalization analyses to evaluate potential causal and mechanistic inferences. We integrate various molecular data types from public resources to infer disease connectivity and shared mechanisms using a data-driven process. Expression quantitative trait locus analyses combined with genome-wide association studies identified significant functional associations between increasing genetic risk in the <i>GRN</i> region and decreased expression of the gene in Parkinson's, Alzheimer's and amyotrophic lateral sclerosis. Additionally, colocalization analyses show a connection between blood-based inflammatory biomarkers relating to platelets and <i>GRN</i> expression in the frontal cortex. <i>GRN</i> expression mediates neuroinflammation function related to multiple neurodegenerative diseases. This analysis suggests shared mechanisms for Parkinson's, Alzheimer's and amyotrophic lateral sclerosis.
Supercritical fluids technology for advanced geominerals: from lab to pilot scale facilities (2018)

Invited talk
Self-imaged optical bottle beam based optical tweezers systems (2005)

Optical tweezers technique has aggrandized the light-matter interaction, whereby researchers have employed light forces from colloidal sciences to biomedical applications. There have been constant quests to integrate novel beams in tweezers system for myriads of novel applications. In this paper, we report optical tweezers system based on self-imaged optical bottle beams, which has some distinct advantages over other conventional beams like Gaussian, Laguerre-Gaussian and Bessel beams in few applications. A self-imaged bottle beam is obtained by superimposing two Bessel beams with varying radial wavevectors. A self-imaged bottle beam possesses three-dimensional intensity-null points along the propagation axis and by varying the radial wavevectors of the Bessel beams number of bottles; location of bottles and the dimension of the bottles can be pre-determined. Moreover, by dynamically varying the parameters of radial wavevector of interfering Bessel beams, the dynamic potential-well obtained are capable of transporting both high and low indices microparticle in conveyor-belt arrangement along the longitudinal axis. Bottle beams belongs to the family of propagation-invariant beams and hence inherent the propagation-invariance and self-reconstruction properties of Bessel beam together with three-dimensional trapping potential contrary to Bessel beam whereby the particles trapped in the central core are loosing defined in the longitudinal axis. Such bottle beams also holds promise applications in blue-detuned optical taps for the optical confinement of laser-cooled atoms in three-dimensional dark region.