gebhart/patrepeval huggingface dataset:
Photogeneration of Heptacene in a Polymer Matrix (2006)

Heptacene (1) was generated by the photodecarbonylation of 7,16-dihydro-7,16-ethanoheptacene-19,20-dione (2) in a polymer matrix using a UV-LED lamp (395 +/- 25 nm). Compound 1 showed a long wavelength absorption band extending from 600 to 825 nm (lambdamax approximately 760 nm) and was found to be stable up to 4 h in the polymer matrix. However, irradiation of a solution of 2 in toluene produced only oxygen adducts.
Efficient Curve Fitting (2008)

We propose a method for fitting a piecewise parametric curve to a sequence of digitized points such as those acquired from a computer mouse or digitizing pen. The fitting is done on-the-fly rather than after a complete sequence of points has been acquired, thereby providing high-quality parameterized curves for immediate display during drawing. The method is fast, accurate, and robust, handles complex input paths, maintains corners, and ensures at least G 1 continuity at non-corner points. The method uses vector distance fields, which we describe here, to represent the intended input path of the digitized points in order to achieve its quality and performance. Detailed pseudocode is available online.
Silicatein and the Translation of its Molecular Mechanism of Biosilicification into Low Temperature Nanomaterial Synthesis (2008)

ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTSilicatein and the Translation of its Molecular Mechanism of Biosilicification into Low Temperature Nanomaterial SynthesisRichard L. Brutchey† and Daniel E. Morse*‡View Author Information Institute for Collaborative Biotechnologies, California NanoSystems Institute, the Materials Research Laboratory, and the Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, California 93106, and Department of Chemistry, University of Southern California, Los Angeles, California 90089* Corresponding author: e-mail, [email protected].†University of Southern California.‡University of California, Santa Barbara.Cite this: Chem. Rev. 2008, 108, 11, 4915–4934Publication Date (Web):September 5, 2008Publication History Received3 December 2007Published online5 September 2008Published inissue 12 November 2008https://pubs.acs.org/doi/10.1021/cr078256bhttps://doi.org/10.1021/cr078256breview-articleACS PublicationsCopyright © 2008 American Chemical SocietyRequest reuse permissionsArticle Views5158Altmetric-Citations214LEARN 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 SUBJECTS:Hydrolysis,Monomers,Oxides,Peptides and proteins,Silica Get e-Alerts
Method for partial reduction of the non-linearity and distortion in MR images caused by the presence of metal objects (2003)

Some of the major problems in magnetic resonance imaging are related to static artifacts generated through interactions with the main magnetic field. The artifacts caused by biomedical implants such as orthopedic braces, prostheses or other fixation device implants distort the information contained in the image and impair the process of clinical investigation. In this paper we present preliminary results of a non-linear adjustive method for partial reduction of such type of distortion.
Analysis of optimal dynamic rate shaping of Markov-1 sources (2004)

We discuss the behavior of the optimal solution to the dynamic rate shaping problem assuming an AR(1) source model. By analyzing the statistical and rate-distortion behavior of the different components of this minimization problem, the following key result is mathematically proven: "the set of optimal breakpoint values for any frame is invariant to the accumulated motion compensated shaping error from past frames and may be very reasonably approximated using the current frame shaping error alone".
Positive and negative regulation of the gene for transcription factor IIIA in Xenopus laevis oocytes. (1989)

Expression of the positively acting 5S gene-specific transcription factor, TFIIIA, is regulated during development, with highest levels of mRNA and protein occurring during oogenesis. By analysis of TFIIIA promoter mutants microinjected into late stage Xenopus oocytes, we have determined DNA sequences required for the transcription of this gene and we have identified proteins that bind to these regulatory sequences. A negative element lies between positions -306 and -289. Three positive-acting sequences are located between positions -289 and -253, -250 and -173, and -144 and -101. Gel shift analyses of TFIIIA promoter fragments incubated with Xenopus oocyte extracts have identified two DNA-protein complexes. One complex, designated B1, requires sequences within the promoter region extending from -271 to -253 while the second complex, designated B2, involves promoter sequences from -235 to -221. The protein involved in formation of the B1 complex has been found to be related to the human adenovirus major late transcription factor, USF.
Low Stretched Premixed Methane-Air Flame. (1997)

A numerical study of low stretched premixed methane-air flame in a counterflow configuration is conducted. The present simulation includes detailed transport properties and chemical kinetics. It is found that near the flammability limit, there is a radiation extinction branch in addition to the normal stretch extinction branch, which has been extensively studied at a large stretch rate. Furthermore, far from the flammability limit, it is found that there are two stable flames, a normal flame and a weak flame which are the results of interaction between the stretch effect and the radiation effect, at a certain extent of stretch rate. In addition, the present results show that the flammability limit obtained in counterflow configuration cannot be extended directly to the flammability limit of its corresponding one-dimensional free propagating premixed flame.
Distribution of all <i>bucl</i> genes in <i>Burkholderia spp</i>. as assessed by bioinformatics and PCR amplification<sup>a</sup>. (2015)

&lt;p&gt;&lt;sup&gt;a&lt;/sup&gt; Presence or absence of &lt;i&gt;bucl&lt;/i&gt; amplicons are indicated by + or –, respectively. NT, not tested (not sufficient amount of gDNA available). Association of &lt;i&gt;bucl&lt;/i&gt; presence with pathogenic Bp and Bm species, compared to nonpathogenic Bt strains, was assessed using the Fisher Exact Probability Test and Cramer’s V&lt;sup&gt;2&lt;/sup&gt; analysis.&lt;/p&gt;&lt;p&gt;&lt;sup&gt;b&lt;/sup&gt; Strains for which &lt;i&gt;bucl&lt;/i&gt; presence was determined by bioinformatics.&lt;/p&gt;&lt;p&gt;&lt;sup&gt;c&lt;/sup&gt; Smaller-sized amplicons observed for &lt;i&gt;bucl2&lt;/i&gt; amplicon (&lt;a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0137578#pone.0137578.s006" target="_blank"&gt;S4A Fig&lt;/a&gt;).&lt;/p&gt;&lt;p&gt;Distribution of all &lt;i&gt;bucl&lt;/i&gt; genes in &lt;i&gt;Burkholderia spp&lt;/i&gt;. as assessed by bioinformatics and PCR amplification&lt;a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0137578#t004fn001" target="_blank"&gt;&lt;sup&gt;a&lt;/sup&gt;&lt;/a&gt;.&lt;/p&gt;
Advances in engineering and synthetic biology toward improved therapeutic immune cells (2021)

Engineered immune cells as therapies is a rapidly growing field that can successfully address complex and refractory disease in ways traditional molecular therapeutics cannot. Currently, engineering these cells entails viral-mediated genomic integration of desired genes or electroporation-based delivery of gene-editing machinery, notably the Clustered regularly interspaced short palindromic repeats - CRISPR-associated (CRISPR-Cas9) system. Recent advancements in nonviral delivery methods and improved Cas-based gene editors are providing new tools that may enable the production of consistent and precisely defined therapeutic immune cells. Combined with ideas borrowed from synthetic biology, these engineering advances are poised to help create the next generation of immune cell therapies with even greater precision and functionality to address complex diseases.
Chemoattraction to Dimethylsulfoniopropionate Throughout the Marine Microbial Food Web (2010)

Phytoplankton-produced dimethylsulfoniopropionate (DMSP) provides underwater and atmospheric foraging cues for several species of marine invertebrates, fish, birds, and mammals. However, its role in the chemical ecology of marine planktonic microbes is largely unknown, and there is evidence for contradictory functions. By using microfluidics and image analysis of swimming behavior, we observed attraction toward microscale pulses of DMSP and related compounds among several motile strains of phytoplankton, heterotrophic bacteria, and bacterivore and herbivore microzooplankton. Because microbial DMSP cycling is the main natural source of cloud-forming sulfur aerosols, our results highlight how adaptations to microscale chemical seascapes shape planktonic food webs, while potentially influencing climate at the global scale.
Allylruthenium(IV) Complexes as Highly Efficient ROMP Catalysts (1996)

First activate, then polymerize. This is the way that ruthenium complexes such as 1 can be used to catalyze the ring-opening metathesis polymerization efficiently. Diazoalkanes serve as activating agents and depending on their substitution pattern subequivalent or excess amounts are required. When ethyl diazoacetate is used, turnover frequency values above 105 h−1 have been achieved in the ring-opening metathesis polymerization of norbornene.
Prevalence of diabetic retinopathy in relation to age at onset of the diabetes, treatment, duration and glycemic control (1996)

To study the frequency of diabetic retinopathy in relation to age at diagnosis, treatment, duration of diabetes and glycemic control as measured by means of HbA1c levels, we performed a cross-sectional, registered-based study in the Helsingborg area of southern Sweden, comprising 2232 diabetic patients. Of the known diabetic population < 75 years old, approximately 70% were estimated to be included. We graded retinopathy according to the alternative classification of the Wisconsin study. With an age at diagnosis < 30 years (19% of patients) the prevalence of retinopathy was 64%, whereas with an age at diagnosis > or = 30 years the prevalence of retinopathy was 57% in insulin-treated, and 26% in non-insulin treated patients. Levels of glycated hemoglobin and duration of diabetes were associated with retinopathy in the group with younger onset. In the older-onset group, there was a relationship between retinopathy and duration of diabetes and insulin treatment; glycated hemoglobin had a relationship which was of borderline significance with any retinopathy, but clearly significant with the pooled group: severe non-proliferative, proliferative retinopathy and/or macular edema. Hyperglycemia and duration of diabetes were thus associated with retinopathy in both younger- and older-onset diabetes, but hyperglycemia less so in the older-onset group.
In Vitro Toxicity of Bone Graft Materials to Human Mineralizing Cells (2022)

Bone graft materials from synthetic, bovine, and human sources were analyzed and tested for in vitro cytotoxicity on dental pulp stem cells (DPSCs) and osteosarcoma cells (Saos-2). Raman spectroscopy indicated significant amounts of collagen only in human bone-derived materials, where the mineral to protein ratio was 3.55 ± 0.45, consistent with bone. X-ray fluorescence revealed tungsten (W) concentrations of 463 ± 73, 400 ± 77, and 92 ± 42 ppm in synthetic, bovine, and human bone chips, respectively. When these chips were added to DPSCs on tissue culture plastic, the doubling times after two days were the same as the controls, 16.5 ± 0.5 h. Those cultured with synthetic or bovine chips were 96.5 ± 8.1 and 25.2 ± 1.4 h, respectively. Saos-2 was more sensitive. During the first two days with allogeneic or bovine graft materials, cell numbers declined. When DPSC were cultured on collagen, allogeneic and bovine bone chips did not increase doubling times. We propose cytotoxicity was associated with tungsten, where only the concentration in human bone chips was below 184 ppm, the value reported as cytotoxic in vitro. Cells on collagen were resistant to bone chips, possibly due to tungsten adsorption by collagen.
Flexible and Stretchable Organic Electrochemical Transistors for Physiological Sensing Devices (2023)

Flexible and stretchable bioelectronics provides a biocompatible interface between electronics and biological systems and has received tremendous attention for in situ monitoring of various biological systems. Considerable progress in organic electronics has made organic semiconductors, as well as other organic electronic materials, ideal candidates for developing wearable, implantable, and biocompatible electronic circuits due to their potential mechanical compliance and biocompatibility. Organic electrochemical transistors (OECTs), as an emerging class of organic electronic building blocks, exhibit significant advantages in biological sensing due to the ionic nature at the basis of the switching behavior, low driving voltage (<1 V), and high transconductance (in millisiemens range). During the past few years, significant progress in constructing flexible/stretchable OECTs (FSOECTs) for both biochemical and bioelectrical sensors has been reported. In this regard, to summarize major research accomplishments in this emerging field, this review first discusses structure and critical features of FSOECTs, including working principles, materials, and architectural engineering. Next, a wide spectrum of relevant physiological sensing applications, where FSOECTs are the key components, are summarized. Last, major challenges and opportunities for further advancing FSOECT physiological sensors are discussed.
The Revolution of Silicon Photonics (2022)

We are now experiencing a revolution in optical technologies, where one can print and control massive optical circuits, on a microelectronic chip. This revolution is enabling a whole range of applications that are in need for scalable optical technologies and its opening the door to areas that only a decade ago were unimaginable.
High-efficiency InGaAlP/GaAs visible light-emitting diodes (1991)

High-efficiency InGaAlP surface emission light emitting diodes (LEDs) have been successfully fabricated. Newly designed double-heterostructure LEDs with a GaAlAs current spreading layer were employed to expand the light emission area, which is necessary to take out the light efficiently. The external quantum efficiency was 1.5% at 620 nm orange light for an In0.5 (Ga0.8Al0.2)0.5P active layer LED. This LED is five times more efficient at 620 nm than that of the GaAlAs and GaAsP LEDs. 563 nm green electroluminescence, which is the shortest wavelength ever reported for InGaAlP LEDs, was also achieved with an In0.5(Ga0.5Al0.5)0.5P active layer.
Remarkable Anti-Fouling Performance of TiO2-Modified TFC Membranes with Mussel-Inspired Polydopamine Binding (2017)

It has been proven that a versatile bio-glue, polydopamine, can firmly bind TiO2 (titanium dioxide) nanoparticles on thin film composite (TFC) membranes. In this work, the anti-fouling behaviour of this novel polydopamine-TiO2-modified membrane is evaluated, based on the static bovine serum albumin (BSA) surface adhesion of the membranes and the relative flux decline. The results show that the anti-fouling performance of this new membrane is significantly improved in dark conditions when compared with the neat TFC membrane and the membranes only modified by polydopamine or TiO2. When filtrating a 0.5 g·L−1 BSA solution in dark conditions, the flux of the polydopamine-TiO2-modified membrane remains constant, at 95% of its pure water flux after 30 min filtration for 8 h of the experiment. This indicates a significant increase in anti-fouling performance when compared to the 25% flux decline observed for the neat TFC membrane, and to the 15% flux decline of those only modified by polydopamine or TiO2. This remarkable anti-fouling behaviour is attributed to an improved and uniform hydrophilicity, due to the presence of TiO2 and to the regular nanosized papillae structure of the polydopamine-TiO2 coating. Furthermore, since dopamine-modified TiO2 has visible light-induced photocatalytic properties, the membrane’s photocatalytic performance was also tested in light conditions. However an increase of flux and decrease of retention were observed after 24 h of continuous illumination, indicating that light may also affect the top layer of the membrane.
Approche multi-bandes pour la transmission 100 Gbps de signaux OFDM multiplexés en polarisation (2011)

National audience
RIGETTO ACUTO DEL TRAPIANTO DI PANCREAS: ANALISI DEL RUOLO DIAGNOSTICO DELL’ECOCOLOR DOPPLER SI 41 CASI SOTTOPOSTI A BIOPSIA (2008)

RIGETTO ACUTO DEL TRAPIANTO DI PANCREAS: ANALISI DEL RUOLO DIAGNOSTICO DELL’ECOCOLOR DOPPLER SI 41 CASI SOTTOPOSTI A BIOPSIA
Ten-year analysis of saccular aneurysms in the Barrow Ruptured Aneurysm Trial (2019)

There was no significant difference in clinical outcomes between the 2 assigned treatment groups as measured by mRS outcomes or deaths. Clinical outcomes in the patients with posterior circulation aneurysms were better in the coiling group at 1 year, but after 1 year this difference was no longer statistically significant. Rates of complete aneurysm obliteration and rates of retreatment favored patients who actually underwent clipping compared with those who underwent coiling.Clinical trial registration no.: NCT01593267 (clinicaltrials.gov).
Efïicient and low-complexity space time code for massive MIMO RFID systems (2017)

In this paper, a Space-Time Block Code (STBC) based on the Golden number, Golden code is proposed for a massive MIMO-RFID systems. Based on channel modelling for massive MIMO-RFID system, the proposed space-time code is applied to the tag side. Simulation results show that the proposed code for massive MIMO-RFID systems outperforms Alamouti code while simplifying the receiver's complexity. The Bit Error Rate (BER) performance of the proposed technique demonstrates that high diversity gain for the tag is achieved leading to a highly reliable and more robust RFID range. Furthermore, the link capacity between the tagged item and the reader can be increased. The proposed RFID technique provides superior performance against the state-of-the-art RFID techniques.
Reliable Silicon Photonic Light Source Using Curved Distributed Feedback Lasers (2017)

We propose a curved erbium doped aluminum oxide (Al2O3:Er3+) distributed feedback (DFB) laser for a reliable integrated photonics light source. The curved structure allows a compensation for radially varying film thickness in Al2O3:Er3+ deposition process.
Biological CO2-Methanation: An Approach to Standardization (2019)

Power-to-Methane as one part of Power-to-Gas has been recognized globally as one of the key elements for the transition towards a sustainable energy system. While plants that produce methane catalytically have been in operation for a long time, biological methanation has just reached industrial pilot scale and near-term commercial application. The growing importance of the biological method is reflected by an increasing number of scientific articles describing novel approaches to improve this technology. However, these studies are difficult to compare because they lack a coherent nomenclature. In this article, we present a comprehensive set of parameters allowing the characterization and comparison of various biological methanation processes. To identify relevant parameters needed for a proper description of this technology, we summarized existing literature and defined system boundaries for Power-to-Methane process steps. On this basis, we derive system parameters providing information on the methanation system, its performance, the biology and cost aspects. As a result, three different standards are provided as a blueprint matrix for use in academia and industry applicable to both, biological and catalytic methanation. Hence, this review attempts to set the standards for a comprehensive description of biological and chemical methanation processes.
Oscillatory Combustion in Heated Microchannel (2003)

Characteristics of combustion in micro-channel heated by external heat source were examined. We chose quartz channel of inner diameter 2mm, being smaller than the quenching distance of Methane-air mixture. The effects of equivalence ratio and averaged mixture flow velocity on the stability were examined. In addition to the conventional flame, repetition of extinction and auto-ignition which we all "oscillatory combustion" was observed in wide equivalence ratio and smaller mixture velocity conditions. Mechanism of the phenomena was discussed by simple analysis.
Effects of the Shape of Roofs on an Urban Propagation Modelling System at 2.4GHz (2007)

# Toshiteru Hayashi , Atsushi Yamamoto , Koichi Ogawa , Kim Olesen , Jesper O. Nielsen , Naizheng Zheng , and Gert F. Pedersen 2 1 Matsushita Electric Industrial Co., Ltd. 1006, Kadoma, Osaka, 571-8501 Japan E-mail : {hayashi.toshiteru, yamamoto.on, ogawa.koichi}@jp.panasonic.com 2 Department of Electronic Systems, Aalborg University Niels Jernes Vej 12, DK-9220, Aalborg, Denmark E-mail : {ko, jni, nz, gfp}@es.aau.dk
Studies on the Synthesis of Novel Block Ionomers (1986)

Novel sulfonated and carboxylated ionomers having "blocky" structures were synthesized via two completely different methods. Sulfonated ionomers were prepared by a fairly complex emulsion copolymerization of n-butyl acrylate and sulfonated styrene (Na or K salt) using a water soluble initiator system. Carboxylated ionomers were obtained by the hydrolysis of styrene-isobutylmethacrylate block copolymers which have been produced by carefully controlled living anionic polymerization. Characterization of these materials showed the formation of novel ionomeric structures with dramatic improvements in the modulustemperature behavior and also, in some cases, the stress-strain properties. However no change was observed in the glass transition temperature (DSC) of the ionomers when compared with their non-ionic counterparts, which is a strong indication of the formation of blocky structures.
Vortex fluidics-mediated DNA rescue from formalin-fixed museum specimens (2019)

Abstract DNA from formalin-preserved tissue could unlock a vast repository of genetic information stored in museums worldwide. However, formaldehyde crosslinks proteins and DNA, and prevents ready amplification and DNA sequencing. Formaldehyde acylation also fragments the DNA. Treatment with proteinase K proteolyzes crosslinked proteins to rescue the DNA, though the process is quite slow. To reduce processing time and improve rescue efficiency, we applied the mechanical energy of a vortex fluidic device (VFD) to drive the catalytic activity of proteinase K and recover DNA from American lobster tissue ( Homarus americanus ) fixed in 3.7% formalin for &gt;1-year. A scan of VFD rotational speeds identified the optimal rotational speed for recovery of PCR-amplifiable DNA and while 500+ base pairs were sequenced, shorter read lengths were more consistently obtained. This VFD-based method also effectively recovered DNA from formalin-preserved samples. The results provide a roadmap for exploring DNA from millions of historical and even extinct species.