gebhart/patrepeval huggingface dataset:
Fast Ion Transport Pathway Provided by Polyethylene Glycol Confined in Covalent Organic Frameworks (2019)

Covalent organic frameworks (COFs) with well-tailored channels are able to accommodate ions and offer their conduction pathway. However, due to strong Coulombic interaction and the lack of transport medium, directly including lithium salts into the channels of COFs results in limited ion transport capability. Herein, we propose a strategy of incorporating low-molecular-weight polyethylene glycol (PEG) into COFs with anionic, neutral, or cationic skeletons to accelerate Li<sup>+</sup> conduction. The PEG confined in the well-aligned channels retains high flexibility and Li<sup>+</sup> solvating ability. The ion conductivity of PEG included in a cationic COF can reach 1.78 × 10<sup>-3</sup> S cm<sup>-1</sup> at 120 °C. The simplicity of this strategy as well as the diversity of crystalline porous materials holds great promise to design high-performance all-solid-state ion conductors.
A 50 m/320 Gbps DWDM FSO communication (2016)

This study proposes and presents the experimental demonstration of a 320 Gbps free-space optical (FSO) communication based on dense-wavelength-division-multiplexing (DWDM) technology and afocal scheme. Good bit error rate (BER) performance and clear eye diagram are obtained at a 50 m/320 Gbps operation.
Sram-Based FPGA proposal for dynamic power management on sensor node (2014)

Technologies like Sram-Based FPGA appear with features to be explored as construction of low-power circuits. In this project we built a low-power circuit applying the implementation of a technique to minimize the clocks domains of the circuit reducing an amount of 87% of dynamic power with respect to the same architecture built with a clock domain for each module. The architecture built has all the necessary features to integrate, synchronize and to perform communication according to the application. The impact of dynamic power consumption in the architecture built on Sram-Based FPGA is evaluated. Also a balanced operation mode among performance, reliability in the communication and power consumption for sensor nodes on FPGA is achieved. The full operation mode of the architecture described is proposed and analyzed in an eASIC Nextreme-2 technology.
A middleware architecture supporting seamless and secure multimedia services across an intertechnology radio access network (2009)

This article presents a middleware architecture to support multimedia services across intertechnology radio access networks in a secure and seamless manner. The proposed architecture uses the media-independent handover framework, where the handover decision function is based on triggering/collecting statistics from the physical, network, and application layers so that an ongoing multimedia session (video) can be transferred seamlessly and securely (using context transfer) across intertechnology radio access networks. Simulation results show that when a vertical handover is based on the proposed MIH framework (including the context transfer of AAA information), handover latency is reduced by 38 percent during WiFi to UMTS handover and 20 percent during UMTS to WiFi handover compared to a non-MIH-based handover scheme.
Developmental potential of defined neural progenitors derived from mouse embryonic stem cells (2004)

The developmental potential of a uniform population of neural progenitors was tested by implanting them into chick embryos. These cells were generated from retinoic acid-treated mouse embryonic stem (ES) cells, and were used to replace a segment of the neural tube. At the time of implantation, the progenitors expressed markers defining them as Pax6-positive radial glial (RG) cells, which have recently been shown to generate most pyramidal neurons in the developing cerebral cortex. Six days after implantation, the progenitors generated large numbers of neurons in the spinal cord, and differentiated into interneurons and motoneurons at appropriate locations. They also colonized the host dorsal root ganglia (DRG) and differentiated into neurons, but, unlike stem cell-derived motoneurons, they failed to elongate axons out of the DRG. In addition, they neither expressed the DRG marker Brn3a nor the Trk neurotrophin receptors. Control experiments with untreated ES cells indicated that when colonizing the DRG, these cells did elongate axons and expressed Brn3a, as well as Trk receptors. Our results thus indicate that ES cell-derived progenitors with RG characteristics generate neurons in the spinal cord and the DRG. They are able to respond appropriately to local cues in the spinal cord, but not in the DRG, indicating that they are restricted in their developmental potential.
The effect of electromagnetic flux density on the ionization and the combustion of fuel (An economy design project) (2010)

A comprehensive experimental study on the effect of electromagnetic field on the ionization and combustion of fuel in an internal combustion engine is presented. The major aim is for the user economy and environmental friendly especially as it may affect climate change.
The preparation of a series of 3β-methoxy-Δ<sup>5</sup>-steroids (1953)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe preparation of a series of 3β-methoxy-Δ5-steroidsMax N. Huffman and Jack W. SadlerCite this: J. Org. Chem. 1953, 18, 8, 919–927Publication Date (Print):August 1, 1953Publication History Published online1 May 2002Published inissue 1 August 1953https://pubs.acs.org/doi/10.1021/jo50014a004https://doi.org/10.1021/jo50014a004research-articleACS PublicationsRequest reuse permissionsArticle Views86Altmetric-Citations5LEARN 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
RESEARCH AND DESIGN OF QUADRUPLE-RIDGED HORN ANTENNA (2013)

This paper presents a novel design of dual-linear-polarized broadband horn antenna for 6»18GHz frequency band. Applying commercial software Ansoft HFSS, parametric analysis is taken with respect to the best antenna performance and manufacturing tolerance. The proposed antenna is flnally fabricated and measured, and the measured results show that the designed antenna exhibits low VSWR ( 25dB) without beam splitting in the entire operation band.
PreSPI: a domain combination based prediction system for protein-protein interaction (2004)

With the accumulation of protein and its related data on the Internet, many domain-based computational techniques to predict protein interactions have been developed. However, most techniques still have many limitations when used in real fields. They usually suffer from low accuracy in prediction and do not provide any interaction possibility ranking method for multiple protein pairs. In this paper, we propose a probabilistic framework to predict the interaction probability of proteins and develop an interaction possibility ranking method for multiple protein pairs. Using the ranking method, one can discern the protein pairs that are more likely to interact with each other in multiple protein pairs. The validity of the prediction model was evaluated using an interacting set of protein pairs in yeast and an artificially generated non-interacting set of protein pairs. When 80% of the set of interacting protein pairs in the DIP (Database of Interacting Proteins) was used as a learning set of interacting protein pairs, high sensitivity (77%) and specificity (95%) were achieved for the test groups containing common domains with the learning set of proteins within our framework. The stability of the prediction model was also evident when tested over DIP CORE, HMS-PCI and TAP data. In the validation of the ranking method, we reveal that some correlations exist between the interacting probability and the accuracy of the prediction.
A Distributed Fuzzy Qualitative Evaluation System (2006)

In an enterprise, decision makers always make decisions under the environment of uncertainty, vagueness, fuzziness and incomplete information. Evaluation activities such as rating and surveying play an important role for the enterprise decision making. In order to enhance the evaluation result accuracy and evaluation process efficiency, this paper presents a distributed fuzzy qualitative evaluation system (DFQES) to be applied in complex distributed evaluation scenarios. DFQES applies our developed fuzzy algorithms which are translated into objects distributed to remote agents to solve the similar problems using the agent technology on the basis of Web services-based service oriented architecture (WS-SOA). In addition, we also present the approach modeling the fuzzy system as an intelligent agent for further development. DFQES can be a generic framework for designing and implementing the enterprise qualitative evaluation applications such as customer satisfaction evaluations, employee satisfaction surveys, vendor surveys, and risk assessments.
Hybrid diagnostic strategy for an expert system controlled automatic test system (EXATS) (1989)

A description of EXATS is given. A knowledge-based system is interfaced to an automatic test system (ATS) to provide a flexible test sequence, controlled by the actual fault signature. Successful diagnoses are fed back to enhance the knowledge base (KB). The reasoning process for test selection and test evaluation consults two separate KBs. The experiential knowledge about the heuristic symptom fault relation is organized as a hierarchy of rule sets which are exploited by a top-down refine strategy. The physical knowledge about structure and function of the unit under test is modeled as a logical function model. Continuous signal variables are treated as discrete events, allowing the representation of the transfer functions as a state variable truth table. Thus, an implicit fault model is obtained. A concept using Prolog to implement the propagation of the state variables and their corresponding time intervals is introduced. The diagnosis is based on ambiguity sets of suspect components for each failed test. These sets are generated by successive constraint deactivation. EXATS was demonstrated with a line replaceable unit on the radio frequency automatic test equipment.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Intelligent Reflecting Surface Aided Multi-Antenna Secure Transmission (2019)

In this letter, we propose intelligent reflecting surface (IRS) aided multi-antenna physical layer security. We present a power efficient scheme to design the secure transmit power allocation and the surface reflecting phase shift. It aims to minimize the transmit power subject to the secrecy rate constraint at the legitimate user. Due to the non-convex nature of the formulated problem, we propose an alternative optimization algorithm and the semidefinite programming (SDP) relaxation to deal with this issue. Also, the closed-form expression of the optimal secure beamformer is derived. Finally, simulation results are presented to validate the proposed algorithm, which highlights the performance gains of the IRS to improve the secure transmission.
Role of Diazotrophic Bacteria in Biological Nitrogen Fixation and Plant Growth Improvement (2016)

Though there is an abundant supply of nitrogen in the atmosphere, it cannot be used directly by the biological systems since it has to be combined with the element hydrogen before their incorporation. This process of nitrogen fixation (<TEX>$N_2$</TEX>-fixation) may be accomplished either chemically or biologically. Between the two elements, biological nitrogen fixation (BNF) is a microbiological process that converts atmospheric di-nitrogen (<TEX>$N_2$</TEX>) into plant-usable form. In this review, the genetics and mechanism of nitrogen fixation including genes responsible for it, their types and role in BNF are discussed in detail. Nitrogen fixation in the different agricultural systems using different methods is discussed to understand the actual rather than the potential <TEX>$N_2$</TEX>-fixation procedure. The mechanism by which the diazotrophic bacteria improve plant growth apart from nitrogen fixation such as inhibition of plant ethylene synthesis, improvement of nutrient uptake, stress tolerance enhancement, solubilization of inorganic phosphate and mineralization of organic phosphate is also discussed. Role of diazotrophic bacteria in the enhancement of nitrogen fixation is also dealt with suitable examples. This mini review attempts to address the importance of diazotrophic bacteria in nitrogen fixation and plant growth improvement.
Epidemiological and clinical aspects of human papillomavirus detection in the prevention of cervical cancer (2004)

Cervical cancer is a major cause of death, and the second most frequent cancer in women worldwide. Many studies have indicated a causal relation between genital human papillomavirus (HPV) infections and cervical cancer. High-risk HPV genotypes have been detected in almost 100% of all cervical cancers, and the process of HPV mediated carcinogenesis has been partly clarified. The concept that HPV is a obligatory cause in cervical cancer development has lead to extensive research regarding the incorporation of HPV detection in (1) cervical cancer prevention programs, (2) triage of women with abnormal cervical scrapes in the screening program, and (3) follow-up of patients treated for cervical intraepithelial neoplasia (CIN). Epidemiological studies indicate that 50% of women becoming sexually active contract a genital HPV infection within 2 years. The lifetime risk of a genital HPV infection is estimated to be 80%, but very few of these women will develop cervical cancer. Several studies have shown that the persistence of genital HPV infections is especially related to the development of cervical cancer. As a result, HPV detection at a single moment was shown to be of limited clinical value in the triage of patients with abnormal cervical scrapes, or during follow-up after treatment for CIN. Furthermore, major variations in the sensitivity of different HPV detection methods, as well as differences in HPV detection related to the menstrual cycle, have shown that many facts regarding HPV transmission, replication, and detection need to be clarified, before HPV detection can be of clinical value.
Simultaneous Clock Component Extraction and Wavelength Conversion of NRZ Signal Using an SOA Loop Mirror (2004)

Simultaneous all-optical clock component extraction and wavelength conversion of nonreturn-to-zero signal using a semiconductor optical amplifier (SOA) loop mirror are simulated and experimentally demonstrated. Both simulation and experiment results show that an SOA loop mirror can provide selective inverted wavelength conversion and clock component extraction functionalities at its reflected and transmitted output port, respectively, even without optimizing for each functionality. Extinction ratio degradation of the wavelength-converted signal is analyzed. Better performance and potentially higher speed can be provided than using a single SOA.
Chemically defined medium and Caenorhabditis elegans (2003)

As was suggested with the introduction of C. elegans as a potential genetic system, use of defined medium with C. elegans should prove a powerful tool.
Review of Recent Progress in Dye-Sensitized Solar Cells (2007)

We introduced the structure and the principle of dye-sensitized solar cell (DSC). The latest results about the critical technology and the industrialization research on dye-sensitized solar cells were reviewed. The development of key components, including nanoporous semiconductor films, dye sensitizers, redox electrolyte, counter electrode, and conducting substrate in dye-sensitized solar cells was reviewed in detail. The developing progress and prospect of dye-sensitized solar cells from small cells in the laboratory to industrialization large-scale production were reviewed. At last, the future development of DSC was prospective for the tendency of dye-sensitized solar cells.
Variation in drivers' cognitive load. Effects of driving through village areas and rural junctions (1991)

Two experiments were performed in which drivers' cognitive load was measured by the time taken to complete calculation tasks presented to them while driving on prespecified routes. Experiment 1 was conducted on two different driving routes. Both routes included driving on a highway and driving through a village area. Mean driving speed was lower and mean calculation time was higher in the village areas than on the adjacent highway sections of the two driving routes. Across successive 100-m intervals of the two driving routes, drivers' cognitive load was found to be inversely related to their driving speed. Experiment 2 tested the same dual-task method on driving routes including two rural junctions. At both junctions driving speed decreased with decreasing distance to the give-way line and the drivers' cognitive load was highest while approaching and driving through the junctions. It is concluded that the applied dual-task method is sensitive to the variation in drivers' cognitive load caused by variation...
Psychosexual effects of menopause: Role of androgens (1999)

Ovarian hormones-estrogens, androgens, and progesterone-produce a myriad of effects in the nervous system. The effects of androgens in the brain are mediated through androgen-specific receptors and by the aromatization of testosterone to estradiol. Alterations in the circulating levels of androgens play an important role in psychologic and sexual changes that occur after menopause. The effects of short-term estrogen therapy in improving psychologic symptoms, maintaining vaginal lubrication, decreasing vaginal atrophy, and increasing pelvic blood flow in postmenopausal women are well documented. However, some patients require more than estrogen alone to improve psychologic dysfunction, decreased sexual desire, or other sexual problems associated with menopause. Results from clinical studies show that hormone replacement therapy with estrogen plus androgens provides greater improvement in psychologic (eg, lack of concentration, depression, and fatigue) and sexual (eg, decreased libido and inability to have an orgasm) symptoms than does estrogen alone in naturally and surgically menopausal women.
Visual feedback during speech production (1986)

The question of whether visual information can affect ongoing speech production arises from numerous studies demonstrating an interaction between auditory and visual information during speech perception. In a preliminary study, the effect of delayed visual feedback on speech production was examined. Two of the 13 subjects demonstrated speech errors that were directly related to the delayed visual signal. However, in the main experiment, providing immediate visual feedback of the articulators did not diminish the effects of delayed auditory feedback for 11 speakers.
RNA Shown To Catalyze Chemical Reactions Required for life (1992)

RETURN TO ISSUEPREVNewsNEXTRNA Shown To Catalyze Chemical Reactions Required for lifeStudies find ribosomal RNA is probably sufficient for peptide bond formatton and that ribozyme catalyzes aminoacyl ester hydrolysisRUDY M. BAUMView Author Information C&EN San FranciscoCite this: Chem. Eng. News 1992, 70, 25, 22–24Publication Date (Print):June 22, 1992Publication History Published online10 November 2010Published inissue 22 June 1992https://doi.org/10.1021/cen-v070n025.p022Copyright © 1992 American Chemical SocietyArticle Views9Altmetric-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 InReddit PDF (822 KB) SUBJECTS:Genetics Get e-Alerts
The Relationship between SES and Reading Comprehension in Chinese: A Mediation Model (2017)

An increasing body of research provides evidence that socioeconomic status (SES) was significantly related to children's reading development; however, the psychological mechanism underlying the association between them remained an open question. The present study is designed to test the hypothesized three-path effect of vocabulary knowledge and morphological awareness as mediators between SES and sentence reading comprehension in Chinese first-graders. Results of mediation model showed that SES exerted its effect on sentence reading comprehension through the indirect path via the simple mediating effect of morphological awareness and the three-path mediating effect of vocabulary knowledge and morphological awareness. The findings highlight a previously unidentified mechanism of the relationship between SES and reading comprehension in Chinese young children.
Towards a Blockchain based digital identity verification, record attestation and record sharing system (2019)

The Covid-19 pandemic has made individuals and organizations to rethink the way of handling identity verification and credentials sharing particularly in quarantined situations. In this study, we investigate the inefficiencies of traditional identity systems, and discuss how a proper implementation of Blockchain technology would result in safer, more secure, privacy respecting and remote friendly identity systems. As a result, we propose a Blockchain based framework for digital identity verification, record attestation and record sharing, and we explain the framework in details with certain use cases. Our proposed framework promotes individuals to fully control their identity data and govern the level of the identity data sharing.
State and Local Governments as Borrowers: Strategic Choices and the Capital Market (1993)

State and local governments issue securities to obtain financing for publicly desired projects or activities. A borrower's optimum economic goal is to obtain the lowest cost of capital over the desired repayment schedule. The role of the government's chief financial officer is to design appropriate strategies to achieve this goal within a context of changing market conditions, debt structures, and influences on borrowing choices.