gebhart/patrepeval huggingface dataset:
ChemInform Abstract: Chemistry of Polynuclear Metal Complexes with Bridging Carbene or Carbyne Ligands. Part 103. Carbaborane Molybdenum and Tungsten Dimetal Complexes. (1991)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Initial bone regeneration around fenestrated implants in Beagle dogs using basic fibroblast growth factor–gelatin hydrogel complex with varying biodegradation rates (2008)

These results suggest that use of slow degradation-type bFGF-gelatin hydrogel complex may accelerate bone regeneration around fenestrated implants at an early stage of bone regeneration.
Bororganyle, I. Überführung von Phosphoniumyliden in Phosphan–Monoalkylboran‐Komplexe. – Hydroborierungsreaktionen (1988)

Abstract Triphenylphosphoniumylide 1 addieren Boran (aus 2 ) unter Bildung von Alkylidentriphenylphosphoran–Boranen 3 , die sich beim Erhitzen in die Triphenylphosphan–Monoalkylboran‐Addukte 6 umlagern. Die Verbindungen 6 lassen sich in Hydroborierungsreaktionen einsetzen.
Numerical experiments on the genesis of Sharav cyclones: idealized simulations (1995)

A three-level channel flow model is used to investigate the generation of Sharav cyclones in the lee of the Atlas mountains through “idealized” numerical experimentation. A typical initial state consists of a barotropic high—low system, embedded in baroclinic shear flow and centered to the north of the Atlas mountains. If this “perturbation” is of sufficient strength, a cold-air outbreak occurs in the rear of the low as well as a southward excursion of the trough at upper levels. The cold air is blocked by the Atlas mountains, if the initial location of the low is chosen properly. The upper-level trough intensifies slightly when crossing the mountain range and induces then a low-level cyclone in the lee. The trough turns eastward later on and the new cyclone is staying close to this upper-level centre. A simple two-dimensional three-layer model is used to explain salient features of this type of lee cyclogenesis. Moreover, additional experiments are conducted in order to elucidate details of the cyclogenetic process.
Three-Dimensional Mapping of Unitary Synaptic Connections by Two-Photon Macro Photolysis of Caged Glutamate (2008)

To understand the precise microarchitecture of the cortical circuitry, it is crucial to know the distribution of synaptic connections and their synaptic strengths at the level of a single cell, rather than a group of cells. Here, we describe a new application of two-photon photolysis of caged glutamate that enabled us to induce an action potential in only a small number (about five) of pyramidal neurons by increasing the volume of two-photon excitation by reducing the effective numerical aperture of the objective. We performed whole cell patch-clamp recordings from layer 2/3 pyramidal neurons in the rat visual cortex and stimulated many neurons in a large three-dimensional space (approximately 600 x 600 x 100 microm) including neurons in layers 2/3 and 4 using this new technique. We mapped the density and amplitude of unitary excitatory postsynaptic currents and found that the basic microarchitecture of excitatory synaptic connections consists of two regions: a columnar, dense core region with a radius of 150 microm and an outer, sparse region. The dense core region includes the majority of strong synaptic connections in layer 2/3. Our results reveal the columnar organization of synaptic connectivity in the rat visual cortex, where functional columns have not been clearly demonstrated. Thus this technique will be a uniquely powerful tool for quantifying synaptic connectivity and manipulating neural activity at the single-cell level.
Ferromagnetic artificial pinning centers in superconducting Nb0.36Ti0.64 wires (1996)

We used ferromagnetic artificial pinning centers in superconducting NbTi wires to achieve a large critical current density (Jc) in a magnetic field. Four wires were fabricated that contained nanometer-sized arrays of Ni or Fe pins inside micron-sized filaments of Nb0.36Ti0.64 alloy. A ferromagnetic pin volume of only 2% Ni produced Jc’s (e.g., 2500 A/mm2 at 5 T, 4.2 K) that were comparable to those of commercial wires that have a pin volume of ∼20% Ti. We conclude that ferromagnetic artificial pins are more effective than nonmagnetic pins for a given volume percent.
Canonical Stiefel Quotient and its application to generic face recognition in illumination spaces (2009)

This paper presents a new paradigm for face recognition in illumination spaces when the identities of training subjects and test subjects do not overlap. Previous methods employ illumination models to create a projector from an illumination basis and perform single image classification. In contrast, we apply an illumination model to an image and create a set of illumination variants. For a gallery image, these variants are expressed as a point on a Stiefel manifold with an associated tangent plane. Two projections of the probe image illumination variants onto this tangent plane are defined and the ratio between these two projections, called the Canonical Stiefel Quotient (CSQ), is a measure of distance between images. We show that the proposed CSQ paradigm not only outperforms the traditional single image matching approach but also other variants of image set matching including a geodesic method. Furthermore, the proposed CSQ method is robust to the choice of training sets. Finally, our analyses reveal the benefits of using image set classification over single image matching.
Ligand exchange leads to efficient triplet energy transfer to CdSe/ZnS Q-dots in a poly(<i>N</i>-vinylcarbazole) matrix nanocomposite (2013)

Upon exchanging long chain alkylamine ligands with a carbazole terminated fatty acid as 6-(N-carbazolyl)-hexanoic acid (C6) and 11-(N-carbazolyl) undecanoic acid (C11), efficient photoluminescence (PL) of CdSe/ZnS colloidal quantum dots (QDs) was observed upon excitation in the absorption band of the carbazole moiety at 330 nm. This effect, which occurred both in solution and in a poly(N-vinylcarbazole) (PVK) matrix doped with the QDs, is attributed to sensitization of the QDs by PVK and the ligands. More efficient energy transfer was observed in solution for the shorter ligand (C6) capped QDs, due to a shorter average distance between the donor (carbazole) and the acceptor (QD). The binding of C6 and C11 to the QDs was confirmed by 1H solution nuclear magnetic resonance, which showed line broadening of the carbazole signal due to a decrease of the mobility of the carbazoles upon binding to the QDs compared with the sharp lines observed for the free molecules in solution. In doped PVK films, the significant enhancement of the energy transfer to the QD core could also be related to a better miscibility between the QDs and the PVK as confirmed by optical transmission and confocal microscopy images. In contrast to the experiment in solution, the overall energy transfer in the doped films was found more efficient for QDs capped with C11. To study in more detail the energy transfer between the carbazole moieties and the QDs, time-resolved fluorescence measurements were performed for solutions of C6 and C11, capped QDs and PVK films doped with the QDs. In contrast to the large enhancement of the QD emission indicated by steady-state PL spectra, the latter experiments suggested only a relatively low efficiency (19.6% and 10.8%) for singlet transfer from the carbazole ligands to the QDs. This suggests that the enhancement of the QD emission must be largely due to triplet transfer.
Corrigendum to “Lamellarins and Related Pyrrole-Derived Alkaloids from Marine Organisms”: [Chemical Review 108 (2008) 264−287] (2009)

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrigendum to "Lamellarins and Related Pyrrole-Derived Alkaloids from Marine Organisms": [Chemical Review 108 (2008) 264−287]Hui Fan, Jiangnan Peng, Mark T. Hamann, and Jin-Feng Hu*Cite this: Chem. Rev. 2010, 110, 6, 3850Publication Date (Web):October 16, 2009Publication History Received26 September 2009Published online16 October 2009Published inissue 9 June 2010https://pubs.acs.org/doi/10.1021/cr900322fhttps://doi.org/10.1021/cr900322fcorrectionACS PublicationsCopyright © 2009 American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views2179Altmetric-Citations10LEARN 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 PDF (46 KB) Get e-AlertscloseSUBJECTS:Cell physiology,Chemical structure,Inhibitors,Organic compounds,Photocyclization Get e-Alerts
Enzymatic Joining of Polynucleotides (1972)

Abstract Incubation of superhelical closed circular DNA with Escherichia coli DNA ligase and adenosine 5'-monophosphate (AMP) yields two new circular forms: molecules with one single strand break and covalently closed circles that have lost superhelical turns. This result, which is dependent on added AMP, shows that the joining reaction catalyzed by the DNA ligase is reversible. The use of radioactive AMP has permitted the identification of the ligase-AMP and DNA-adenylate intermediates in the reverse reaction.
Association Between Perioperative Hypothermia and Surgical Site Infection After Elective Abdominal Surgery: A Prospective Cohort Study (2020)

Introduction Surgical site infections (SSIs) account for 14-16% of nosocomial infections and are one of the major causes of increased morbidity, hospital stay, cost of care, and even mortality. Hypothermia as a risk factor for SSI is debated but there is lack of conclusive evidence. The present study explores the association of hypothermia with SSI. Methodology This is a prospective cohort study conducted on adult patients who underwent elective laparotomy. Patients were divided into two cohorts, the Hypothermia Cohort and the Normothermia Cohort, based upon episodes of hypothermia of <36<sup>0</sup>C in the perioperative period. SSI was diagnosed based upon criteria defined by the Center for Disease Control and Prevention (CDC). Postoperative follow-up to detect SSI was done until 30 days after the operation. Results A total of 183 patients met the selection criteria and were included in the study. Ninety patients (49%) had perioperative hypothermia and were followed in the Hypothermia Cohort, while 93 patients (51%) who remained normothermic in the perioperative period were followed in the Normothermia Cohort. Mean age of the patients was 49.77 +/- 14.82 years. Almost two-thirds of the participants were females (63.9%). Patients who developed hypothermia were significantly older and had lower BMI. Also the proportion of female patients was significantly higher in the Normothermic Cohort. Rate of SSI was similar in both groups (10% versus 10.8%) with p-value of 0.867. Multivariable regression analysis also failed to show any significant association between hypothermia and SSI. Conclusion Our study failed to show any statistically significant association between hypothermia and surgical site infection.
High Temperature Lift Heat Pump Refrigerant and Thermodynamic Cycle Selection (1994)

<div class="htmlview paragraph">This paper describes the process and analysis used to select a refrigerant and thermodynamic cycle as the basis of a vapor compression heat pump requiring a high temperature lift. Use of a vapor compression heat pump versus other types was based on prior work performed for the Electric Power Research Institute. A high lift heat pump is needed to enable a thermal control system to remove heat down to 275K from a habitable volume when the external thermal environment is severe. For example, a long term habitat will reject heat from a space radiator to a 325K environment. The first step in the selection process was to perform an optimization trade study, quantifying the effect of radiator operating temperature and heat pump efficiency on total system mass; then, select the radiator operating temperature corresponding to the lowest system mass. Total system mass included radiators, all heat pump components and the power supply system. The study showed that night operation, with no temperature lift, dictated the radiator size. To operate otherwise would require a high mass penalty to store power. With the defined radiation surface, and heat pump performances assumed to be from 40 percent to 60 percent of the Carnot ideal, the optimum heat rejection temperature ranged from 387K to 377K, as a function of heat pump performance.</div> <div class="htmlview paragraph">Refrigerant and thermodynamic cycles were then selected to best meet the previously determined design conditions. The system was then adapted as a ground-based prototype lifting temperature to 360K (versus 385K for flight unit) and using readily available commercial-grade components. Over 40 refrigerants, separated into wet and dry compression behavioral types, were considered in the selection process. Refrigerants were initially screened for acceptable critical temperature. The acceptable refrigerants were analyzed in ideal single and two-stage thermodynamic cycles. Top candidates were analyzed assuming realistic component limits and system pressure drops, and were evaluated for other considerations such as safety, environmental impact and commercial availability.</div> <div class="htmlview paragraph">A maximum coefficient of performance (COP) of 56 percent of the Carnot ideal was achievable for a three-stage CFC-11 cycle operating under the flight conditions above. However, the final selection was driven by a requirement to use a non-CFC refrigerant in the ground-based prototype and the desire to maintain a consistent refrigerant in both flight and prototype systems. Therefore, HCFC-123 was the chosen refrigerant with an expected COP of 43 percent of the Carnot ideal for the ground-based prototype.</div>
The Electrical Measurement of Molecular Junctions (1998)

ABSTRACT: We present the investigation of the electrical transport of metal/(organic molecule or monolayer)/metal junctions. Utilizing a novel mechanically controllable break junction to form a statically stable system, we have self‐assembled molecules of benzene‐ 1,4‐dithiol onto two facing gold electrodes allowing for direct observation of charge transport through the molecules. Current‐voltage I(V) measurements provides a quantitative measure of the conductance of a junction containing a single molecule. We have also created a technique to form well‐defined, stable, and reproducible metallic contacts to a self‐assembled monolayer of 4‐thioacetylbiphenyl with nanoscale area. Electronic transport measurements show a prominent rectifying behavior arising from the asymmetry of the molecular heterostructure. Variable‐temperature measurements reveal the dominant transport mechanisms, such as thermionic emission for the Ti‐organic system. These techniques demonstrate the capability of electrically characterizing and engineering conductive molecular systems for future potential device applications.
Method of assimilation of altimeter data and its test in the tropical North Atlantic (1996)

Article Method of assimilation of altimeter data and its test in the tropical North Atlantic was published on January 1, 1996 in the journal Russian Journal of Numerical Analysis and Mathematical Modelling (volume 11, issue 5).
All-optical trapping and acceleration of heavy particles (2008)

A scheme for fast, compact, and controllable acceleration of heavy particles in vacuum is proposed, in which two counterpropagating lasers with variable frequencies drive a beat-wave structure with variable phase velocity, thus allowing for trapping and acceleration of heavy particles, such as ions or muons. Fine control over the energy distribution and the total charge of the beam is obtained via tuning of the frequency variation. The acceleration scheme is described with a one-dimensional theory, providing the general conditions for trapping and scaling laws for the relevant features of the particle beam. Two-dimensional, electromagnetic particle-in-cell simulations confirm the validity and the robustness of the physical mechanism.
ChemInform Abstract: SPECTRA AND STRUCTURE OF PHOSPHORUS‐BORON COMPOUNDS PART 6, VIBRATIONAL SPECTRA AND STRUCTURE OF SOME PHOSPHINE‐TRIHALOBORANES (1975)

Abstract Die IR‐ (33‐3000 cm ‐1 ) und Raman‐ (20‐2700 cm ‐1 )‐Spektren von H 3 P·BX 3 und D 3 P·BX 3 (X = F, Br, J) werden bei ‐196°C imfesten Zustand aufgenommen.
PLATELET-DERIVED DIADENOSINE POLYPHOSPHATES (2004)

: Wednesday, June 16, 2004: POSTER SESSIONS: Poster Session 51: Experimental Hypertension and Pharmacology
Spectral Convergence of Large Block-Hankel Gaussian Random Matrices (2017)

This paper studies the behaviour of the empirical eigenvalue distribution of large random matrices W_N W_N* where W_N is a ML x N matrix, whose M block lines of dimensions L x N are mutually independent Hankel matrices constructed from complex Gaussian correlated stationary random sequences. In the asymptotic regime where M \rightarrow \infty, N \rightarrow +\infty and ML/N \rightarrow c > 0, it is shown using the Stieltjes transform approach that the empirical eigenvalue distribution of W_N W_N* has a deterministic behaviour which is characterized.
Synthesis of Novel Cross-Linked Fluorinated Cooligomeric Nanoparticles: Synthetic Approach to Colloidal Stable Fluorinated Magnetic Nanocomposites (2007)

Fluoroalkanoyl peroxides reacted with dimethacrylate monomer containing poly(oxyethylene) units and acrylic acid to afford cross-linked fluoroalkyl end-capped cooligomeric nanoparticles in excellent to moderate isolated yields under very mild conditions. These cross-linked fluorinated nanoparticles thus obtained were nanometer size-controlled, and these nanoparticles were found to exhibit a good dispersibility and stability in a variety of common organic solvents including water. Interestingly, these cross-linked fluorinated cooligomeric nanoparticles were applied to the preparation of colloidal stable cross-linked fluorinated cooligomeric magnetite nanoparticles.
American Urological Association Symptom Index for Women with Voiding Symptoms: Lack of Index Specificity for Benign Prostate Hyperplasia (1993)

An evaluation of the American Urological Association (AUA) symptom index was recently published as a valid symptom score for benign prostatic hyperplasia (BPH). To determine the specificity prospectively of the index for BPH and bladder outlet obstruction, we chose to administer the index to 38 consecutive women with voiding symptoms who were previously scheduled for video urodynamic evaluation. In each case the index was self-administered before the urodynamic study. Index determination was then repeated 1 to 4 months after the institution of therapy. Only 3 of the 38 women demonstrated true urethral obstruction. One patient exhibited urethral compression after a pubovaginal sling urethral suspension, 1 with multiple sclerosis demonstrated detrusor external sphincter dyssynergia and 1 suffered bladder neck obstruction caused by a leiomyoma. The AUA symptom index for the 35 nonobstructed women ranged from 4 to 33 (mean 17.6) Of the women 15 scored between 8 and 18, while 14 had a score of greater than 18. The mean score decreased to 9.4 after the institution of therapy, which included bladder suspension surgery, anticholinergics, timed voiding and pelvic floor exercises. Of the 3 women with bladder outlet obstruction the mean score was 22.7 before and 11.0 after therapy. A greater decrease in the AUA symptom index occurred among the obstructed group after urological therapy compared to the nonobstructed group. Our results indicate that the AUA symptom index is not specific for BPH. The index score for the women in our study rivaled the scores reported for men with BPH.
Synthesis of Na2WO4-MnxOy supported on SiO2 or La2O3 as fiber catalysts by electrospinning for oxidative coupling of methane (2021)

The oxidative coupling of methane (OCM) is an attractive route to convert natural gas directly into value-added chemical products (C2+). This work comparatively investigated SiO2- or La2O3-supported Na2WO4-MnxOy (denoted as NWM) catalysts in powder and fiber forms. The powder catalysts were prepared using a co-impregnation method and the fiber catalysts were prepared successfully using an electrospinning technique. The NWM/La2O3 fiber catalysts were activated at low temperature (500 °C) and had a 4.7% C2+ yield, with the maximum C2+ yield of 9.6% at 650 °C, while the NWM/SiO2 fiber catalyst was activated at 650 °C and had a maximum C2+ yield of 20.4% at 700 °C. The XPS results in the O 1s region indicated that NWM/La2O3 had a lower binding energy than NWM/SiO2, suggesting that the lattice oxygen species is easily released from the catalyst surface and creates vacancy sites that enhance performance. The stability test of the catalysts indicated that the La2O3-containing catalysts had excellent activity and high thermal stability, while the SiO2-containing catalysts had a higher C2+ yield when the prepared catalysts were compared at 700 °C. Considering the same component catalysts, the fiber catalysts achieved higher performance because their heat and mass transfer properties were enhanced.
Mesure de la santé et maladie de la mesure : le contrôle des corps dans une usine de production automobile (2011)

Résumé Cet article tente de montrer comment une organisation industrielle se saisit de la question de la santé des salariés, en appliquant des procédures de mise sous contrôle proches de celles utilisées pour la qualité. Comme dans le cas de la qualité totale, la traçabilité des atteintes à la santé sert à la fois l’amélioration continue et l’attribution de responsabilité. Comme dans le cas de la qualité totale, les procédures réduisent la liberté d’interprétation des opérateurs et contraignent leurs marges d’action, de façon à permettre la garantie par les concepteurs de niveaux de qualité/santé. Or, la santé n’est-ce pas, aussi, disposer d’une capacité d’action sur son environnement ?
100 Gb/s Optical IM-DD Transmission with 10G-Class Devices Enabled by 65 GSamples/s CMOS DAC Core (2013)

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 W. Yan, T. Tanaka, B. Liu, M. Nishihara, L. Li, T. Takahara, Z. Tao, J. C. Rasmussen, and T. Drenski, "100 Gb/s Optical IM-DD Transmission with 10G-Class Devices Enabled by 65 GSamples/s CMOS DAC Core," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2013, OSA Technical Digest (online) (Optica Publishing Group, 2013), paper OM3H.1. Export Citation BibTex Endnote (RIS) HTML Plain Text Get Video Citation alert Save article