gebhart/patrepeval huggingface dataset:
Additions and Corrections - Carbon-Phosphorous Heterocycles. Synthesis, Separation, and Resolution of Stereoisomers of 1,1'-(1,2-Ethanediyl)bis(1,2,3,4-tetrahydro-4,4-dimethyl-1-phenylphosphinolinium) Diperchlorate. The Use of 31P NMR Analysis To Monitor the Resolution. (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdditions and Corrections - Carbon-Phosphorous Heterocycles. Synthesis, Separation, and Resolution of Stereoisomers of 1,1'-(1,2-Ethanediyl)bis(1,2,3,4-tetrahydro-4,4-dimethyl-1-phenylphosphinolinium) Diperchlorate. The Use of 31P NMR Analysis To Monitor the Resolution.Narayanasamy Gurusamy and K. BerlinCite this: J. Am. Chem. Soc. 1982, 104, 22, 6167Publication Date (Print):November 1, 1982Publication History Published online1 April 2004Published inissue 1 November 1982https://pubs.acs.org/doi/10.1021/ja00386a610https://doi.org/10.1021/ja00386a610research-articleACS PublicationsRequest reuse permissionsArticle Views46Altmetric-Citations-LEARN 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
Induced Fit and Mobility of Cycloalkanes within Nanometer-Sized Confinements at 5 K (2022)

Host-guest architectures provide ideal systems for investigating site-specific physical and chemical effects. Condensation events in nanometer-sized confinements are particularly interesting for the investigation of intermolecular and molecule-surface interactions. They may be accompanied by conformational adjustments representing induced fit packing patterns. Here, we report that the symmetry of small clusters formed upon condensation, their registry with the substrate, their lateral packing, and their adsorption height are characteristically modified by the packing of cycloalkanes in confinements. While cyclopentane and cycloheptane display cooperativity upon filling of the hosting pores, cyclooctane and to a lesser degree cyclohexane diffusively redistribute to more favored adsorption sites. The dynamic behavior of cyclooctane is surprising at 5 K given the cycloalkane melting point of >0 °C. The site-specific modification of the interaction and behavior of adsorbates in confinements plays a crucial role in many applications of three-dimensional porous materials as gas storage agents or catalysts/biocatalysts.
ChemInform Abstract: From Molecular Chemistry to Hybrid Nanomaterials. Design and Functionalization (2011)

Abstract Review: 72 refs.
Virtual neurosurgery anatomy laboratory: A collaborative and remote education experience in the metaverse (2023)

Cloud-based VR interfaces are a novel resource for neurosurgery education. Interactive and remote collaboration between instructors and trainees is possible in virtual environments using volumetric models created with photogrammetry. We believe that this technology could be part of a hybrid anatomy curriculum for neurosurgery education. More studies are needed to assess the educational value of this type of innovative educational resource.
Environmental Beliefs and Educational Ability (1973)

(1973). Environmental Beliefs and Educational Ability. The Journal of Environmental Education: Vol. 5, Awareness/Attitudes/Action, pp. 9-12.
Control of Throughput, Temperature, and Purity of Solvent in Soxhlet Extraction (1948)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTControl of Throughput, Temperature, and Purity of Solvent in Soxhlet ExtractionK. J. Mysels, H. H. Pomeroy, and G. H. SmithCite this: Anal. Chem. 1948, 20, 9, 878–879Publication Date (Print):September 15, 1948Publication History Published online1 May 2002Published inissue 15 September 1948https://pubs.acs.org/doi/10.1021/ac60021a025https://doi.org/10.1021/ac60021a025research-articleACS PublicationsRequest reuse permissionsArticle Views133Altmetric-Citations2LEARN 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
IL4-induced gene 1 promotes tumor growth by shaping the immune microenvironment in melanoma (2017)

Amino acid catabolizing enzymes emerged as a crucial mechanism used by tumors to dampen immune responses. The L-phenylalanine oxidase IL-4 induced gene 1 (IL4I1) is expressed by tumor-associated myeloid cells of most solid tumors, including melanoma. We previously provided the only evidence that IL4I1 accelerates tumor growth by limiting the CD8<sup>+</sup> T cell mediated immune response, in a mouse model of melanoma cell transplantation. Here, we explored the role of IL4I1 in Ret mice, a spontaneous model of melanoma. We found that IL4I1 was expressed by CD11b<sup>+</sup> myeloid cells and that its activity correlated with disease aggressiveness. IL4I1 did not enhance tumor cell proliferation or angiogenesis, but orchestrated the remodeling of the immune compartment within the primary tumor. Indeed, the inactivation of IL4I1 limited the recruitment of polymorphonuclear myeloid-derived suppressor cells and enhanced the infiltration by Th1 and cytotoxic T cells, thus delaying tumor development and metastatic dissemination. Accordingly, human primary melanomas that were poorly infiltrated by IL4I1<sup>+</sup> cells exhibited a higher density of CD8<sup>+</sup> T cells. Collectively, our findings strengthen the rationale for therapeutic targeting of IL4I1 as one of the key immune regulators.
Phase-change optical disc of 20 GB capacity using NRZI+, Turbo coding with blue laser (2003)

We examined a high-density decording system of phase-change optical disc using NRZI+ and Turbo coding with blue laser.As a result of experiments, we comfirmed that a recording capacity of 20 GB is feasible. Full text article is not available.
Strain-controlled shell morphology on quantum rods (2018)

Semiconductor heterostructure nanocrystals, especially with core/shell architectures, are important for numerous applications. Here we show that by decreasing the shell growth rate the morphology of ZnS shells on ZnSe quantum rods can be tuned from flat to islands-like, which decreases the interfacial strain energy. Further reduced growth speed, approaching the thermodynamic limit, leads to coherent shell growth forming unique helical-shell morphology. This reveals a template-free mechanism for induced chirality at the nanoscale. The helical morphology minimizes the sum of the strain and surface energy and maintains band gap emission due to its coherent core/shell interface without traps, unlike the other morphologies. Reaching the thermodynamic controlled growth regime for colloidal semiconductor core/shell nanocrystals thus offers morphologies with clear impact on their applicative potential.
Validity of the Clinical Frailty Scale in Korean older patients at a geriatric clinic (2021)

The CFS is a valid screening tool to assess the frailty status in outpatients of a geriatric clinic in Korea. As a simple and quick measure, the CFS may facilitate frailty assessments in real-world clinical practice.
Oxoneptunium(V) as Part of the Framework of a Polyoxometalate. (2006)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
The Business Value of Recommendations: A Privacy-Preserving Econometric Analysis (2015)

We study the effectiveness of different types of mobile recommendations and their impact on consumers’ utility and product demand, using a privacy-preserving econometric analysis. We find that an increase by 10% in the number of recommendations raises demand by about 6.7%. Our findings highlight the importance of “in-the-moment” marketing. In particular, trending recommendations that provide “in-the-moment” content have a much stronger effect compared to traditional recommendations. This effect is stable across various levels of popularity, whereas traditional recommendations contribute to the rich-get-richer phenomenon. We also examine various moderating effects; for instance, we find that recommendations based on just the novelty of the alternative do not have a significant effect but novel alternatives accrue greater benefits from recommendations when the quality of the item is also taken into consideration. We validate the robustness of our findings using instruments based on a deep learning model as well as different treatment-effects estimators.
H3K9me2 attracts PGC7 in the zygote to prevent Tet3-mediated oxidation of 5-methylcytosine (2012)

Epigenetic reprogramming of the parental genome occurs in fertilized oocytes and involves oxidation of 5-methylcytosines (5-mC) to 5-hydroxymethylcytosines (5-hmC) in the paternal pronucleus. Recent work has shown that the maternal genome is protected from this remodeling step by an interaction between a modified histone, H3K9me2, and the oocyte-derived factor, PGC7, to prevent oxidation of the maternal DNA by the Tet3 5-methylcytosine oxidase.
Fourier transform ion cyclotron resonance spectroscopy (2007)

An ion cyclotreon resonance (ICR) absorption spectrum has been obtained by exciting and ICR spectral segment with a fixed-frequency electric field pulse, followed by broad-band detection digitization of the (time-domain) transient response, and digital fourier transformation to produce the (frequency-domain) absorption spectrum. for a given signal-to-noise ratio and resolution, the FT-ICR method generates a spectrum in a time which is two orders of magnitude shorter than that required in conventional slow-sweep ICR detection. In the present example, a signal-to-noise ratio of 8:1 and a mass resolution of about 0.005 amu for CH (from CH4 at a pressure of 8 × 10−7 torr) have been achieved, using a single data acquisition period of 25.6 msec.
POSSIBLE EVIDENCE OF CHARGE-STRIPE ORDERING IN THE ab-PLANE RESISTIVITY OF STRONGLY UNDERDOPED La2-xSrxCuO4 SINGLE CRYSTALS (2000)

We measured the ab-plane resistivity of La 2-x Sr x CuO 4 underdoped single crystals (x = 0.052 and x=0.06) between 4.2 and 300 K by using an AC version of the Van der Pauw technique. We suggest that a possible scenario of charge-stripe ordering at the lowering of the temperature can be delineated by starting from the main features of the ρ ab (T) curves of these samples. In particular, the deviation from the linearity of the ab-plane resistivity, occurring at a temperature T ch , could be related to the beginning of the charge localization, and the upturn of ρ ab to the progressive pinning of the resulting charge stripes. By starting from an analysis of our ab-plane resistivity curves, we determined the temperature of charge ordering T ch for our samples, thus extending in consistent way the T ch vs. x curve reported in literature to the very low-doping region of the phase diagram.
High Return Performance of Calcium Phosphonate (Ca-DTPMP) Colloidal Inhibitors for Squeeze Treatment in Shale Formations (2020)

The objective of this work was to develop nanomaterial inhibitor with long squeeze life for oil and gas production. Different surfactants, trisodium citrate (Na3Cit), cetyltrimethyl ammonium bromide (CTAB), benzethonium chloride (Hyamine), and bipyridinium dibromide (Gemini), were added to synthesize nanoparticle Ca-DTPMP inhibitor at pH 9.0. The inhibitors were characterized by scanning electron microscope (SEM) and dynamic light scattering (DLS). All these surfactants significantly decreased the particle size, but Gemini was the most effective one to control the calcium phosphonate salt particle size to be about 500 nm. Long-term squeeze experiments (~ 3,000 PV) saturated with calcite at 70 oC and 75 psi back pressure through a glass column packed with Fayetteville shale rock show that the return DTPMP concentration was as high as 3 ppm for the Gemini-Ca-DTPMP colloidal inhibitor. This is an unprecedented improvement in comparison to the squeeze return of DTPMP only inhibitor where the inhibitor return concentration dropped to below 1 ppm within 400 pore volumes. The Ca-DTPMP speciation, potential field application, and the SqueezeSoftPitzer model prediction, are also discussed.
Innovative microporous a-SiCxNy:H membranes synthesized by PECVD for H2/CO2 separation (2014)

International audience
AJIPHASE®: A Highly Efficient Synthetic Method for One‐Pot Peptide Elongation in the Solution Phase by an Fmoc Strategy (2017)

We previously reported an efficient peptide synthesis method, AJIPHASE®, that comprises repeated reactions and isolations by precipitation. This method utilizes an anchor molecule with long-chain alkyl groups as a protecting group for the C-terminus. To further improve this method, we developed a one-pot synthesis of a peptide sequence wherein the synthetic intermediates were isolated by solvent extraction instead of precipitation. A branched-chain anchor molecule was used in the new process, significantly enhancing the solubility of long peptides and the operational efficiency compared with the previous method, which employed precipitation for isolation and a straight-chain aliphatic group. Another prerequisite for this solvent-extraction-based strategy was the use of thiomalic acid and DBU for Fmoc deprotection, which facilitates the removal of byproducts, such as the fulvene adduct.
N-Alkyl Pyrrolidone Requirement for Stable Water-Based Microemulsions (1993)

Stable, efficacious microemulsions of carbaryl and a number of pyrethroids (D-Allethrin, Permethrin and tetramethrin), alone or as complex mixtures, both with and without piperonyl butoxide as a synergist, have been developed (patents pending). These active ingredients were microemulsified in a system comprised of: (A) an optimized solvent system in which certain C-1 to C-8 alkyl pyrrolidones were necessary components; (B) an optimized anionic and/or nonionic surfactant system; and (C) water @ ⩾ 85%(W/W). The system is uniquely thermodynamically stable, has low toxicity and is biodegradable, and may have universal applicability with minor modifications of the ratio of its components. The complex microemulsion system of pyrethroids has very low turbidity (⩽20 NTU at 10–25°C), and is thermally stable (45°C, 6 months). Turbidity increased with temperature (900 NTU at 45°C), but became clear when cooled to ambient temperature. A model is proposed that explains the role of the N-alkyl pyrrolidones in achieving stable microemulsion formulations.
Fast leak detection and location of gas pipelines based on an adaptive particle filter (2005)

Leak detection and location play an important role in the management of a pipeline system. Some model-based methods, such as those based on the extended Kalman filter (EKF) or based on the strong tracking filter (STF), have been presented to solve this problem. But these methods need the nonlinear pipeline model to be linearized. Unfortunately, linearized transformations are only reliable if error propagation can be well approximated by a linear function, and this condition does not hold for a gas pipeline model. This will deteriorate the speed and accuracy of the detection and location. Particle filters are sequential Monte Carlo methods based on point mass (or “particle”) representations of probability densities, which can be applied to estimate states in nonlinear and non-Gaussian systems without linearization. Parameter estimation methods are widely used in fault detection and diagnosis (FDD), and have been applied to pipeline leak detection and location. However, the standard particle filter algorithm is not applicable to time-varying parameter estimation. To solve this problem, artificial noise has to be added to the parameters, but its variance is difficult to determine. In this paper, we propose an adaptive particle filter algorithm, in which the variance of the artificial noise can be adjusted adaptively. This method is applied to leak detection and location of gas pipelines. Simulation results show that fast and accurate leak detection and location can be achieved using this improved particle filter.
Edinburgh System Descriptionfor the 2005 NIST MT Evaluation (2005)

The objective was to study the effect of whole-body vibration (WBV) on strength, balance and pain in patients with peripheral neuropathies and to consider its significance for the rehabilitation of patients suffering from chemotherapy-induced peripheral neuropathy (CIPN). Using a broad search strategy, PubMed was searched for clinical trials on WBV interventions aimed at improving strength, balance or pain in patients with peripheral neuropathies, which were published in English until 5th June 2014. The search was performed by the first author and generated a total of 505 results, which yielded 5 articles that met the inclusion criteria, being studies: i) published in English; ii) involving adult human subjects’ peripheral neuropathies; iii) evaluating the effect of WBV as a therapeutic intervention; and iv) reporting findings for at least one of the following outcomes: strength, balance or pain. Methodological quality of included studies was assessed independently by first and second author, using the physiotherapy evidence database scale. The overall methodological quality of included studies was low. Two studies found a beneficial effect of WBV on neuropathic pain, but another study failed to find the same effect. One study found significant improvements in both muscle strength and balance, while another study found improvements only in some, but not all, of the applied tests to measure muscle strength and balance. The results of this literature search suggest insufficient evidence to assess the effectiveness for the effects of WBV on neuropathic pain, muscle strength and balance in patients with peripheral neuropathies. More high-quality trials are needed to guide the optimization of rehabilitation programs for cancer survivors with CIPN in particular.
ChemInform Abstract: Evaluation of Some Tetraalkylammonium Gold(I) and Gold(III) Aurate Salts for Oral Antiinflammatory and Antiarthritic Activity. (1990)

Abstract The Au(III) aurates (I), their reduction products, the Au(I) aurates (II) as well as the Au(I) aurates (IV) and (VII) are evaluated for their oral antiinflammatory (Au(III)) and antiarthritic activity (Au(I)) in comparison with the Au compounds auranofin (VIII) and (V).
High aspect ratio patterning of photosensitive polyimide with low thermal expansion coefficient and low dielectric constant (2016)

A photosensitive polyimide system based on amine catalyzed imidization of a precursor poly(amic ester) is described. The material is based on the meta ethyl ester of pyromellitic dianhydride and 2,2’ bis(trifluoromethyl)benzidine. It acts as a negative tone resist when formulated with a photobase generator. The material exhibits a dielectric constant of 3.0 in the gigahertz range, a coefficient of thermal expansion of 6±2 ppm/K, and can be patterned to aspect ratios of >2 when formulated with a highly quantum efficient cinnamide type photobase generator.
Effect of Adding Moisture and Wettability on Granulation of Iron Ore (2006)

As the fundamental study for determining the optimum moisture content for granulated particle, the contact angle between iron oxide and water was measured by the sessile drop method using reagent hematite samples that have different porosity and five kinds of iron ores. The granulation experiment was conducted by using five kinds of iron ores and the effects of adding moisture and wettability on the granulation property were investigated. The contact angle of reagent hematite sample and iron ore became large as the surface roughness becomes large. Therefore, the wettability between iron oxide and water greatly influenced the surface roughness of iron oxide. When iron are with high wettability was used for nuclei particles, it can be granulated under all conditions in this study. On the other hand, when iron ore with low wettability was used for the nuclei particles, it was remained some fine iron ore particles without granulating. Therefore, when iron ore with low wettability was used for the nuclei particles, it was necessary to increase the adding moisture in order to improve the granulation property of fine particles. The fracture strength increased with decreasing the contact angle without regard to the kind of iron ore using for nuclei particles. Consequently, It was necessary to increase the adding moisture in order to improve the fracture strength.
Production of Methionol from 3-Methylthiopropionaldehyde by Catalysis of the Yeast Alcohol Dehydrogenase Adh4p (2020)

Methionol is a sulfur-containing aroma compound that contributes to the flavors of fermented foods. In this work, a novel method for methionol production was established using 3-methylthiopropionaldehyde (MMP) and alcohol dehydrogenase (ADH). First, expression of seven ADH genes was analyzed in yeast fermentation added with MMP. Only <i>ADH4</i> displayed an evident increased expression in response to MMP. <i>ADH4</i> was then overexpressed in <i>Saccharomyces cerevisiae</i> S288c and <i>Escherichia coli</i> BL21. The recombinant yeast strain S4 produced more methionol than control strain in MMP fermentation. Furthermore, 0.55 g/L 42 kDa Adh4p was prepared from <i>E. coli</i> by induced expression and purification. A fed-batch catalysis system was finally established to produce methionol from MMP by Adh4p. In 10 h of continuous catalysis, the conversion rate of MMP remained 80-95%, and a final yield of 0.2 g/L methionol was achieved. This work proposed a novel method for methionol production by enzymatic catalysis with a potential application prospect in industry.