gebhart/patrepeval huggingface dataset:
Trace determination and speciation of cyanide ion by atomic absorption spectroscopy (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrace determination and speciation of cyanide ion by atomic absorption spectroscopyJeffrey J. Rosentreter and Rodney K. SkogerboeCite this: Anal. Chem. 1991, 63, 7, 682–688Publication Date (Print):April 1, 1991Publication History Published online1 May 2002Published inissue 1 April 1991https://pubs.acs.org/doi/10.1021/ac00007a007https://doi.org/10.1021/ac00007a007research-articleACS PublicationsRequest reuse permissionsArticle Views289Altmetric-Citations28LEARN 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
Neural Spike Communication under Noisy Environments (2005)

In this paper, we analyze neural spike dynamics of a double feedback neural unit (DFNU) and its networks. An essential emphasis of the DFNU is not only on its simple formulations that can provide quantitative analytic results, but also on physiological plausibility of the dynamics that is comparable to that of Hodgkin-Huxley’s model. The results suggest that a proportional coding of neural information on firing frequency may not be always reasonable due to sensitivity to noisy inputs especially for low-frequency firings. On the other hand, high-frequency firings are relatively appropriate for a neural informational carrier due to the reliability and robustness to noisy inputs. It is also demonstrated by simulation studies that use of noisy inputs can enhance the dynamic neural performances.
[Artificial nutrition of diabetic patients]. (1989)

For total parenteral nutrition in diabetes, the same relation between carbohydrates, fat and protein of 50, 30-35 and 15-20% of total calories as in regular oral feeding has to be taken. For carbohydrates, a 2:1:1 mixture of fructose, glucose and xylitol should be used, since this is to a lesser extent blood glucose level raising as glucose alone and the dose-dependent side effects of the sugar substitutes are negligible. If insulin is infused intravenously, it is important that the carbohydrates are given simultaneously, in order to prevent deleterious hypoglycemnia. Mixtures of MCT and LCT are to be preferred towards pure LCT-emulsions, since the faster elimination of MCT/LCT-solutions may be of clinical relevance in diabetics type II, who frequently have a disturbed lipid metabolism. For protein, the normal amino acid pattern can be used, special solutions are not necessary.
572. Alveolar Epithelial Cell-Specific Plasmid Nuclear Import (2005)

A major concern regarding naked DNA delivery, both in vivo and in vitro, is the relatively low level of gene expression observed following transfection of non-dividing cells. This low level of gene expression is due in part to the relative inaccessibility of plasmid to the nucleus where the cellular transcriptional machinery resides. Many groups have had success customizing plasmid vectors to facilitate DNA nuclear transport. To enhance nuclear import of plasmids, a specific DNA nuclear targeting sequence (DTS) can be included within the plasmid. These sequences bind a subset of newly synthesized transcription factors in the cytoplasm and the plasmid is transported into the nucleus via nuclear localization signals within the DNA-bound transcription factor proteins. Our lab has shown that by using specific DTSs, which bind cell-specific transcription factors, nuclear import of plasmid DNA and subsequent gene expression can be restricted to specific cell types. The experiments presented here describe our identification of a new cell-specific DTS that functions in a class of cells in the lung epithelium. The lung alveolar epithelium contains two morphologically and functionally distinct cell types known as type I (ATI) and type II (ATII) cells. Because several lung diseases specifically affect ATII cells, this cell type is an attractive target for gene delivery. To identify an ATII-specific DTS, a set of ATII-specific promoter sequences were cloned into plasmids lacking any other DTS and these plasmids were microinjected into the cytoplasm of A549 and MLE-12 cells, both ATII-like cell lines. The localization of plasmid DNA was determined eight hours post-injection using in situ hybridization. Of all the sequences tested, only a fragment of the human surfactant protein C (SP-C) promoter (-318 to +18), when included on a plasmid, mediated nuclear import in A549 and MLE-12 cells. When plasmids containing the SP-C promoter were cytoplasmically microinjected into non-ATII cell types (HeLa, TC7, pulmonary smooth muscle cells, and bronchial epithelial cells), no nuclear localization was observed. Thus, the human SP-C promoter functions as an ATII-specific DNA nuclear targeting sequence. Restriction of gene expression to desired cell types represents one of the most important challenges to gene therapy today, and the use of specific nuclear import sequences represents a novel strategy for cell-specific expression of transgenes from plasmids.
Photoaffinity Labeling via Nitrenium Ion Chemistry: Protonation of the Nitrene Derived from 4-Amino-3-nitrophenyl Azide to Afford Reactive Nitrenium Ion Pairs (2009)

Phenyl azides with powerful electron-donating substituents are known to deviate from the usual photochemical behavior of other phenyl azides. They do not undergo ring expansion but form basic nitrenes that protonate to form nitrenium ions. The photochemistry of the widely used photoaffinity labeling system 4-amino-3-nitrophenyl azide, 5, has been studied by transient absorption spectroscopy from femtosecond to microsecond time domains and from a theoretical perspective. The nitrene generation from azide 5 occurs on the S(2) surface, in violation of Kasha's rule. The resulting nitrene is a powerful base and abstracts protons extremely rapidly from a variety of sources to form a nitrenium ion. In methanol, this protonation occurs in about 5 ps, which is the fastest intermolecular protonation observed to date. Suitable proton sources include alcohols, amine salts, and even acidic C-H bonds such as acetonitrile. The resulting nitrenium ion is stabilized by the electron-donating 4-amino group to afford a diiminoquinone-like species that collapses relatively slowly to form the ultimate cross-linked product. In some cases in which the anion is a good hydride donor, cross-linking is replaced by reduction of the nitrenium ion to the corresponding amine.
Standard batch-screening test for coal-liquefaction catalysts - a preliminary report. [Contains list of six organizations and brief description of their catalyst test conditions] (1983)

Review of the literature on batch-screening tests for coal hydroliquefaction reveals considerable variation in the conditions used in such tests. The results obtained in different laboratories would be more useful if standardized conditions were used. This study is an attempt to determine the conditions necessary for such a standardized test. The effects of choice of solvent, temperature, oil/coal ratio, catalyst/coal ratio, agitation rate, and coal batch on screening test results are given. The elements necessary for such a standardized test are recommended.
O. W. Wolters: The fall of Srīvijaya in Malay history. (Asia Major Library.) xii, 274 pp. London: Lund Humphries, 1970. £4.50. (1971)

An abstract is not available for this content so a preview has been provided. Please use the Get access link above for information on how to access this content.
<title>Groups for grouping</title> (1995)

Comparing shapes is important for both recognition and geometry-based grouping. In the case of perspective views of planar shapes, such comparison will typically be based on projective invariants. Yet there are quite a number of practical cases where one can do better and exploit simpler invariants of subgroups of the planar projectivities. This paper tries to sketch a systematic approach, based on subgroups defined by the structures they keep fixed in the image. In particular, this paper focuses on fixed points, fixed lines, lines of fixed points, and pencils of fixed lines. A complete classification of the resulting subgroups is given and the most interesting cases are identified. For these cases invariants are given and examples illustrate their use. In order to illustrate the wider scope, perspectively skewed mirror symmetry is discussed, since it entails a different type of fixed structures.
TD-SCDMA and Ad Hoc Hybrid Network (2007)

One aspect that is always important in mobile networks is the radio planning to ensure that there is coverage over the desired geographical area, without any "holes"; planning of coverage is also important in terms of network capacity and minimizing congestion. This paper considers one aspect of the problem: how to extend coverage beyond that of the base station by using ad hoc network techniques to allow the network to reach users by transiting the connection through a user on the boundary of coverage. An additional benefit is that the approach can "fill in" gaps in coverage within urban areas as well as extending coverage in rural ones. It does this for TD- SCDMA, the 3G network technology proposed for China.
AngioChip: a biodegradable scaffold with built-in vasculature for organ-on-a-chip engineering and direct surgical anastomosis (2016)

Frontiers Events is a rapidly growing calendar management system dedicated to the scheduling of academic events. This includes announcements and invitations, participant listings and search functionality, abstract handling and publication, related events and post-event exchanges. Whether an organizer or participant, make your event a Frontiers Event!
Droplet Spray Behavior of an Atomization-Based Cutting Fluid (ACF) System for Machining of Titanium Alloys (2012)

The aim of this research is to study droplet spray characteristics of an atomization-based cutting fluid (ACF) spray system including droplet entrainment angle and flow development regions with respect to three ACF spray parameters, viz., droplet and gas velocities, and spray distance. ACF spray experiments are performed by varying droplet and gas velocities. The flow development behavior is studied by modeling the droplets entrainment mechanism, and the density and distribution of the droplets across the jet flare. Machining experiments are also performed in order to understand the effect of the droplet spray behavior on the machining performances, viz., tool life/wear, and surface roughness during turning of a titanium alloy, Ti-6Al-4V. Experiments and the modeling of flow development behavior reveal that a higher droplet velocity and a smaller gas velocity result in smaller droplet entrainment angle leading to a gradual and early development of the co-flow with a smaller density and a better distribution of the droplet across the jet flare. Machining experiments also show that a higher droplet velocity, a lower gas velocity and a longer spray distance significantly improve the machining performances such as tool life and wear, and surface finish.
Changes in white matter functional networks across late adulthood (2023)

Our findings converge to support the notion that WM BOLD signals in specific regions, and their interactions with other regions, have the potential to serve as imaging markers of aging.
Coaxial air core electromagnetic accelerators (1982)

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1982.
ChemInform Abstract: MICELLAR CATALYSIS OF ESTER HYDROLYSIS, THE INFLUENCE OF CHIRALITY AND HEAD GROUP STRUCTURE IN ′SIMPLE′ SURFACTANTS (1974)

Abstract An den Antipoden von (I) werden katalytische Einflüsse oberflächenaktiver Verbindungen diskutiert.
Quinazolines. III. Synthesis of 1,3-Diaminobenzo[f]quinazoline and Related Compounds1-3 (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTQuinazolines. III. Synthesis of 1,3-Diaminobenzo[f]quinazoline and Related Compounds1-3Andre Rosowsky and Edward J. ModestCite this: J. Org. Chem. 1966, 31, 8, 2607–2613Publication Date (Print):August 1, 1966Publication History Published online1 May 2002Published inissue 1 August 1966https://doi.org/10.1021/jo01346a035Request reuse permissionsArticle Views251Altmetric-Citations27LEARN 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 InReddit PDF (1 MB) Get e-Alertsclose Get e-Alerts
Observation of emission process in hydrogen-like nitrogen Z-pinch discharge with time integrated soft X-ray spectrum pinhole image (2013)

The emission spectra of hydrogen-like nitrogen Balmer at the wavelength of 13.4 nm in capillary Z-pinch discharge plasma are experimentally examined. Ionization to fully strip nitrogen at the pinch maximum, and subsequent rapid expansion cooling are required to establish the population inversion between the principal quantum number of n = 2 and n = 3. The ionization and recombination processes with estimated plasma parameters are evaluated by utilizing a time integrated spectrum pinhole image containing radial spatial information. A cylindrical capillary plasma is pinched by a triangular pulsed current with peak amplitude of 50 kA and pulse width of 50 ns.
Evaluation of a standardized protocol for thrombin generation using the calibrated automated thrombogram: A Nordic study (2019)

With our standardization concept, we were able to produce TGA-CAT results as robust as standard coagulation assays used in the routine laboratories. Normalization with HemosIL RP may be considered in populations with low or unknown coagulability, while when analysing plasma samples from populations where hypercoagulability is known or suspected, normalization with Affinity RP may be preferred.
DisGeNET: a comprehensive platform integrating information on human disease-associated genes and variants (2016)

The information about the genetic basis of human diseases lies at the heart of precision medicine and drug discovery. However, to realize its full potential to support these goals, several problems, such as fragmentation, heterogeneity, availability and different conceptualization of the data must be overcome. To provide the community with a resource free of these hurdles, we have developed DisGeNET (http://www.disgenet.org), one of the largest available collections of genes and variants involved in human diseases. DisGeNET integrates data from expert curated repositories, GWAS catalogues, animal models and the scientific literature. DisGeNET data are homogeneously annotated with controlled vocabularies and community-driven ontologies. Additionally, several original metrics are provided to assist the prioritization of genotype-phenotype relationships. The information is accessible through a web interface, a Cytoscape App, an RDF SPARQL endpoint, scripts in several programming languages and an R package. DisGeNET is a versatile platform that can be used for different research purposes including the investigation of the molecular underpinnings of specific human diseases and their comorbidities, the analysis of the properties of disease genes, the generation of hypothesis on drug therapeutic action and drug adverse effects, the validation of computationally predicted disease genes and the evaluation of text-mining methods performance.
A dual‐stage method for lesion segmentation on digital mammograms (2007)

Mass lesion segmentation on mammograms is a challenging task since mass lesions are usually embedded and hidden in varying densities of parenchymal tissue structures. In this article, we present a method for automatic delineation of lesion boundaries on digital mammograms. This method utilizes a geometric active contour model that minimizes an energy function based on the homogeneities inside and outside of the evolving contour. Prior to the application of the active contour model, a radial gradient index (RGI)‐based segmentation method is applied to yield an initial contour closer to the lesion boundary location in a computationally efficient manner. Based on the initial segmentation, an automatic background estimation method is applied to identify the effective circumstance of the lesion, and a dynamic stopping criterion is implemented to terminate the contour evolution when it reaches the lesion boundary. By using a full‐field digital mammography database with 739 images, we quantitatively compare the proposed algorithm with a conventional region‐growing method and an RGI‐based algorithm by use of the area overlap ratio between computer segmentation and manual segmentation by an expert radiologist. At an overlap threshold of 0.4, 85% of the images are correctly segmented with the proposed method, while only 69% and 73% of the images are correctly delineated by our previous developed region‐growing and RGI methods, respectively. This resulting improvement in segmentation is statistically significant.
From Queries to Cards (2015)

The growing accessibility of mobile devices has substantially reformed the way users access information. While the reactive search by query remains as common as before, recent years have witnessed the emergence of various proactive systems such as Google Now and Microsoft Cortana. In these systems, relevant content is presented to users based on their context without a query. Interestingly, despite the increasing popularity of such services, there is very little known about how users interact with them.
A Robust Joint Model-Based Demodulator for Continuous Phase Modulation Signals in an Unknown Environment (2008)

Cellular communications systems often suffer from co-channel interference, due to signals from adjacent cells interfering with each other. Previous demodulation techniques have relied on interference rejection to extract only the highest power signal; cancellation techniques are required to extract weaker ones. In this paper, we describe a joint model-based demodulator (J-MBD) that extracts two or more co-channel signals using continuous phase modulation (CPM) simultaneously. The technique is based upon a root selection algorithm using forward-backward linear prediction (FBLP), whereby multiple unequal powered signals are extracted by choosing the highest powered roots. The algorithm is compared to the conventional quadrature demodulator (QD) and the previously introduced single user model-based demodulator (MBD), which extracts only the highest powered user. We show that the new technique outperforms all of the conventional techniques when two co-channel signals are present, by as much as 5 dB, and can more reliably demodulate both strong and weak signals, with few samples, even when the signals have near equal power.
Dedication to Dr. Larry K. Keefer at the Sixth International Workshop on Nitric Oxide in Cancer and Beyond (2023)

From 1975From to 1983, he was , he was
Blood Pressure After Endovascular Thrombectomy (2019)

Background and Purpose- The optimal level for blood pressure after endovascular thrombectomy in acute ischemic stroke is not well established. We sought to evaluate the association of post-endovascular thrombectomy systolic blood pressure (SBP) levels with clinical outcomes. Methods- We included endovascular thrombectomy-treated patients registered from 2014 to 2017 in the Safe Implementation of Treatments in Stroke International Thrombectomy Registry. The mean 24-hour SBP after endovascular thrombectomy treatment was analyzed both as a continuous variable and in intervals. The primary outcome was 3-month functional independence (modified Rankin Scale score of 0-2). The secondary outcomes were symptomatic intracerebral hemorrhage (SICH) and 3-month mortality. The SBP interval with the highest proportion of functional independence was chosen as reference. All analyses were performed for successful or unsuccessful recanalization (modified Treatment in Cerebral Ischemia score ≥2b or <2b, respectively). The results were adjusted for known confounders in logistic regression models. Results- In the multivariable analyses, a higher SBP value as a continuous variable was associated unfavorably with all outcomes in patients with successful recanalization (n=2920) and with more SICH in patients with unsuccessful recanalization (n=711). SBP interval ≥160 mm Hg was associated with less functional independence (adjusted odds ratio, 0.28 [95% CIs, 0.15-0.53]) and more SICH (adjusted odds ratio, 6.82 [95% CIs, 1.53-38.09]) compared with reference 100 to 119 mm Hg in patients with successful recanalization. SBP ≥160 mm Hg was associated with more SICH (adjusted odds ratio, 6.62 [95% CIs, 1.07-51.05]) compared with reference 120 to 139 mm Hg in patients with unsuccessful recanalization. Conclusions- Higher SBP values were associated with less functional independence at 3 months in patients with successful recanalization and with more SICH regardless of recanalization status.
Towards Generalized ML Model in Automated Physiological Arousal Computing: A Transfer Learning-Based Domain Generalization Approach (2022)

Physiological signal-based pattern recognition has progressed significantly, such as automated pain assessment and stress detection. Public datasets provide a research platform to conduct machine learning studies. However, models trained from public datasets easily overfit that specific dataset and do not apply to unseen data collected in real-life scenarios. This paper proposes to use the transfer learning-based domain generalization technique to generalize the models to solve this issue. Data from different training domains are generalized, i.e., the dissimilarity is minimized by the proposed approach such that the model trained is generalized. We proved that the generalized model is more adaptive to new unseen data. Experiments have been done on the BioVid heat pain dataset and WESAD stress dataset, and results showed that our proposed methods significantly improve the model performance on new unseen data.