gebhart/patrepeval huggingface dataset:
Electronic Uses Spur Growth Of High-Performance Plastics (1989)

RETURN TO ISSUEPREVNewsNEXTElectronic Uses Spur Growth Of High-Performance PlasticsMARC S. REISCHView Author Information C&EN Northeast News BureauCite this: Chem. Eng. News 1989, 67, 36, 21–53Publication Date (Print):September 4, 1989Publication History Published online12 November 2010Published inissue 4 September 1989https://pubs.acs.org/doi/10.1021/cen-v067n036.p021https://doi.org/10.1021/cen-v067n036.p021newsACS PublicationsCopyright © 1989 American Chemical SocietyArticle Views7Altmetric-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 options SUBJECTS:Electrical properties,Fire resistant materials,Organic polymers,Plastics Get e-Alerts
Practical Attack Scenarios on Secure Element-Enabled Mobile Devices (2012)

Near Field Communication's card emulation mode is a way to put virtual smart cards into mobile phones. A recently launched application is Google Wallet. Google Wallet turns a phone into a credit card, a prepaid card and a tool to collect gift certificates and discounts. Card emulation mode uses dedicated smart card chips, which are considered to fulfill high security standards. Therefore, card emulation mode is also considered to be safe and secure. However, an NFC-enabled mobile phone introduces a significantly different threat vector. Especially a mobile phone's permanent connectivity to a global network and the possibility to install arbitrary applications onto smart phones open up for several new attack scenarios. This paper gives an overview of the new risks imposed by mobile connectivity and untrusted mobile phone applications. The various APIs for secure element access on different mobile phone platforms and their access control mechanisms are analyzed. The security aspects of mobile phones are explained. Finally, two practical attack scenarios, a method to perform a denial of service (DoS) attack against a secure element and a method to remotely use the applications on a victims secure element without the victim's knowledge, are highlighted.
Organometallic compounds in the environment : principles and reactions (1986)

The only current single-volume source of information on the topic. Looks at environmental and toxicity problems caused by the occurrence of organomercury compounds in the environment, including the involvement of gasoline additives, methyl and ethyl, polymers, organosilicas, and additives and catalysts. Provides a comprehensive guide to the chemical, environmental, industrial, and biogeochemical properties of the subject.
Thrombospondin: A New Attachment Protein in Preretinal Traction Membranes (1992)

Thrombospondin (TSP), an adhesive integrin-binding protein of plasma and platelets, was detected in preretinal traction membranes from patients with idiopathic (8/8) and traumatic (7/8) proliferative vitreoretinopathy (PVR) and proliferative diabetic retinopathy (PDR) (6/8). TSP immunoreactivity was compared to the pattern of von Willebrand factor, plasma transglutaminase (blood coagulation factor XIII), fibronectin, and mononuclear phagocytes, using double-label immunofluorescence microscopy. TSP was partially colocalised with the endothelial cell marker, von Willebrand factor, in PDR. The codistribution of catalytic factor XIII and two cross-linking substrates, fibronectin and TSP, suggests a functional role of the enzyme in the extracellular matrix build-up in PVR and PDR. No significant TSP synthesis by mononuclear phagocytes was observed. Western blotting indicated a plasmin-mediated intravitreal breakdown of presumably plasmatic TSP in PVR and PDR.
Excessive collagen turnover products are released during colorectal cancer progression and elevated in serum from metastatic colorectal cancer patients (2016)

During cancer progression, the homeostasis of the extracellular matrix becomes imbalanced with an excessive collagen remodeling by matrix metalloproteinases. As a consequence, small protein fragments of degraded collagens are released into the circulation. We have investigated the potential of protein fragments of collagen type I, III and IV as novel biomarkers for colorectal cancer. Specific fragments of degraded type I, III and IV collagen (C1M, C3M, C4M) and type III collagen formation (Pro-C3) were assessed in serum from colorectal cancer patients, subjects with adenomas and matched healthy controls using well-characterized and validated ELISAs. Serum levels of the biomarkers were significantly elevated in colorectal cancer patients compared to subjects with adenomas (C1M, Pro-C3, C3M) and controls (C1M, Pro-C3). When patients were stratified according to their tumour stage, all four biomarkers were able to differentiate stage IV metastatic patients from all other stages. Combination of all markers with age and gender in a logistic regression model discriminated between metastatic and non-metastatic patients with an AUROC of 0.80. The data suggest that the levels of these collagen remodeling biomarkers may be a measure of tumour activity and invasiveness and may provide new clinical tools for monitoring of patients with advanced stage colorectal cancer.
Profiling Taxanes in Taxus Extracts Using Lc/ms and Lc/ms/ms Techniques (1994)

Analytical methodology developed for the trace analysis of natural products in crude extracts was utilized for the rapid and systematic structure elucidation of taxanes in Taxus extracts and process intermediates. This method integrates analytical hplc, uv detection, uv spectroscopy, full-scan ionspray mass spectrometry and tandem mass spectrometry on-line. The identification of structure of a taxane is based on comparing the mass spectrometric characteristics of the taxane with the paclitaxel substructural "template." Analytical data for taxanes in preparations from Taxus brevifolia and Taxus baccata were observed, including chromatographic characteristics using a standard hplc system, molecular weight, and collision induced dissociation (cid) tandem mass spectrometry (ms/ms) product ion spectra. The data obtained for 18 taxanes from natural sources using this method provided a taxane profile database useful for the rapid identification of taxanes in mixtures and samples of limited quantity.
The microbiota associated with successful or failing osseointegrated titanium implants (1987)

Abstract In this study the microbiota associated with oral endosteal titanium hollow cylinder implants (ITI) was studied using microscopic, immunochemical and cultural methods. Samples from 5 edentulous patients with successfully incorporated implants serving as abutments for overdentures for more than one year were compared with samples from 7 patients with clinically failing implants. Unsuccessful sites were characterized by pocket probing depths of 6 mm or more, suppuration and visible loss of alveolar bone around the implant as visualized on radiographs. These sites harbored a complex microbiota with a large proportion of Gram‐negative anaerobic rods. Black‐pigmented Bacteroides and Fusobacterium spp. were regularly found. Spirochetes, fusiform bacteria as well as motile and curved rods were a common feature in the darkfield microscopic specimens of these sites. Control sites in the same patients harbored small amounts of bacteria. The predominant morphotype was coccoid cells. Spirochetes were not present, fusiform bacteria, motile and curved rods were found infrequently and in low numbers. The microbiota in control sites in unsuccessful patients and in site in successful patients were very similar. On the basis of these results, it is suggested that “periimplantitis” be regarded as a site specific infection which yields many features in common with chronic adult periodontitis.
A 15 ns 16 Mb CMOS SRAM with reduced voltage amplitude data bus (2003)

A 15-ns 16-Mbit CMOS SRAM which uses a reduced voltage amplitude data bus and a hierarchical sense amplifier scheme is described. The SRAM is organized as 4 Mwords*4 bits. Fast access time and low power dissipation are obtained by a reduced-voltage-amplitude data bus connected to a latched cascaded sense amplifier and current sense amplifier. The waveforms of the address input and the data output lines at room temperature with a 3-V supply are shown. The access time is typically 15 ns, with an active current consumption of 55 mA at 3.0 V and 30 MHz.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Lack of CCR7 expression is rate limiting for lymphatic spread of pancreatic ductal adenocarcinoma (2011)

CCR7 expression on tumor cells promotes lymphatic spread in several malignant tumors. However, a comprehensive characterization of the CCL19/CCL21-CCR7 axis in pancreatic ductal adenocarcinoma (PDAC), which is known for its high rates of lymph-node metastases, is still lacking. CCR7 mRNA and CCR7 protein were found to be expressed in spheroid cultures of all six examined PDAC cell lines. In migration assays, CCR7 expressing PDAC cells showed enhanced migration toward CCL19 and CCL21, the two ligands of CCR7. In an orthotopic nude mouse model, CCR7-transfected PT45P1 cells gave rise to significantly larger tumors and showed a higher frequency of lymph vessel invasion and lymph-node metastases than mock-transfected cells. In an analysis using quantitative real-time PCR, CCR7 showed fourfold overexpression in microdissected PDAC cells compared to normal duct cells. Moderate-to-strong immunohistochemical CCR7 expression, found in 58 of 121 well-characterized human PDACs, correlated with high rates of lymph vessel invasion. Conversely, PDACs completely lacking CCR7 expression showed only low rates of lymph vessel invasion and lymph-node metastases. The evaluation of CCL21 expression by immunofluorescence staining revealed a significant upregulation of CCL21 in peritumoral and intratumoral lymph vessels compared to lymph vessels in disease-free pancreata. In conclusion, our study revealed strong evidence that lack of CCR7 impairs the metastatic potential of PDAC. Lymph vessel invasion by CCR7 expressing PDAC cells may be additionally enhanced by upregulation of CCL21 in tumor-associated lymph vessels, representing a previously unknown factor of lymphatic spread.
ChemInform Abstract: Lectins: Carbohydrate‐Specific Proteins that Mediate Cellular Recognition (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
DIP-chip: Rapid and accurate determination of DNA-binding specificity (2005)

We have developed a new method for determining the DNA-binding specificity of proteins. In DIP-chip (DNA immunoprecipitation with microarray detection), protein.DNA complexes are isolated from an in vitro mixture of purified protein and naked genomic DNA. Whole-genome DNA microarrays are used to identify the protein-bound DNA fragments, and the sequence of the identified fragments is used to derive binding-site descriptions. Using objective criteria for assessing the accuracy of DNA-binding motifs, and using yeast Leu3p as a model, we demonstrate that motifs determined by DIP-chip are as effective at predicting the location of bound proteins in vivo as are motifs determined by conventional low-throughput in vitro methods.
Practical Timing Side Channel Attacks against Kernel Space ASLR (2013)

Due to the prevalence of control-flow hijacking attacks, a wide variety of defense methods to protect both user space and kernel space code have been developed in the past years. A few examples that have received widespread adoption include stack canaries, non-executable memory, and Address Space Layout Randomization (ASLR). When implemented correctly (i.e., a given system fully supports these protection methods and no information leak exists), the attack surface is significantly reduced and typical exploitation strategies are severely thwarted. All modern desktop and server operating systems support these techniques and ASLR has also been added to different mobile operating systems recently. In this paper, we study the limitations of kernel space ASLR against a local attacker with restricted privileges. We show that an adversary can implement a generic side channel attack against the memory management system to deduce information about the privileged address space layout. Our approach is based on the intrinsic property that the different caches are shared resources on computer systems. We introduce three implementations of our methodology and show that our attacks are feasible on four different x86-based CPUs (both 32- and 64-bit architectures) and also applicable to virtual machines. As a result, we can successfully circumvent kernel space ASLR on current operating systems. Furthermore, we also discuss mitigation strategies against our attacks, and propose and implement a defense solution with negligible performance overhead.
On the limitation of comparative quenching as a measure of electronic energy transfer in polymers (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the limitation of comparative quenching as a measure of electronic energy transfer in polymersYoshihiro Itoh, Keiko Kamioka, and S. E. WebberCite this: Macromolecules 1989, 22, 6, 2851–2852Publication Date (Print):June 1, 1989Publication History Published online1 May 2002Published inissue 1 June 1989https://pubs.acs.org/doi/10.1021/ma00196a055https://doi.org/10.1021/ma00196a055research-articleACS PublicationsRequest reuse permissionsArticle Views46Altmetric-Citations7LEARN 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
A container for handling small specimens during preparation and examination in the scanning electron microscope (SEM) (1975)

The difficulties of handling small specimens of less than 1 mm3 are considerably reduced when the specimens are placed in a small container designed to be compatible with the dimensions of the preparatory instrumentation and of the microscope. The container described is unaffected by solvents used in the preparation of specimens for scanning electron microscopy.
Multi-functional angiographic OFDI using frequency-multiplexed dual-beam illumination (2015)

Detection of blood flow inside the tissue sample can be achieved by measuring the local change of complex signal over time in angiographic optical coherence tomography (OCT). In conventional angiographic OCT, the transverse displacement of the imaging beam during the time interval between a pair of OCT signal measurements must be significantly reduced to minimize the noise due to the beam scanning-induced phase decorrelation at the expense of the imaging speed. Recent introduction of dual-beam scan method either using polarization encoding or two identical imaging systems in spectral-domain (SD) OCT scheme shows potential for high-sensitivity vasculature imaging without suffering from spurious phase noise caused by the beam scanning-induced spatial decorrelation. In this paper, we present multi-functional angiographic optical frequency domain imaging (OFDI) using frequency-multiplexed dual-beam illumination. This frequency multiplexing scheme, utilizing unique features of OFDI, provides spatially separated dual imaging beams occupying distinct electrical frequency bands that can be demultiplexed in the frequency domain processing. We demonstrate the 3D multi-functional imaging of the normal mouse skin in the dorsal skin fold chamber visualizing distinct layer structures from the intensity imaging, information about mechanical integrity from the polarization-sensitive imaging, and depth-resolved microvasculature from the angiographic imaging that are simultaneously acquired and automatically co-registered.
Magnetic Properties of Cu-Mn Alloys (1957)

The polarization of conduction electrons due to $s\ensuremath{-}d$ interaction in CuMn alloys is investigated. The uniform polarization due to the first order perturbed energy corresponding to the Fr\"ohlich-Nabarro and Zener mechanism is shown to be completely modified by the first order perturbation of the wave functions and the polarization is concentrated in the neighborhood of the Mn ions. At the same time it is shown that the Fr\"ohlich-Nabarro interaction is included in the Ruderman-Kittel result as one component. The electronic $g$-value of Mn ions and the Knight shift of the Cu-nuclei are also discussed from this point of view.
<title>Statistics of link blockage due to cloud cover for free-space optical communications using NCDC surface weather observation data</title> (2002)

Cloud opacity is one of the main atmospheric physical phenomena that can jeopardize the successful completion of an optical link between a spacecraft and a ground station. Hence, the site location chosen for a telescope used for optical communications must rely on knowledge of weather and cloud cover statistics for the geographical area where the telescope itself is located. In this work, the effects of cloud cover on an optical link are statistically described, considering ten observation sites at locations in the southwestern United States, From California to Texas. The data used for the preparation of this work are surface observation data provided by the National Climatic Data Center (NCDC). NCDC provides hourly information on the cloud coverage of an observation site. Using proper algorithms, these data give a statistical description of link blockage over the ten selected observations sites. Statistics averaged over a number of years for each observation site are presented. Cloud coverage statistics for two and three site diversity are also given for a ground network of optical telescopes. Finally, it is shown quantitatively how the use of two or three telescopes can improve the probability of completion of an optical link and how to select the right locations for a ground network of telescopes in the southwestern United States.
Relationships between Some Uronic Acids and Their Decarboxylation Products<sup>1</sup> (1966)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRelationships between Some Uronic Acids and Their Decarboxylation Products1M. S. Feather and J. F. HarrisCite this: J. Org. Chem. 1966, 31, 12, 4018–4021Publication Date (Print):December 1, 1966Publication History Published online1 May 2002Published inissue 1 December 1966https://pubs.acs.org/doi/10.1021/jo01350a031https://doi.org/10.1021/jo01350a031research-articleACS PublicationsRequest reuse permissionsArticle Views257Altmetric-Citations24LEARN 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
Intercarrier Interference Immune Single Carrier OFDM via Magnitude-Keyed Modulation for High Speed Aerial Vehicle Communication (2013)

Orthogonal Frequency Division Multiplexing (OFDM) has been considered as a strong candidate for next generation wireless communication systems. Compared to traditional OFDM, Single Carrier OFDM (SC-OFDM) has demonstrated excellent bit error rate (BER) performance, as well as low peak to average power ratio (PAPR). Similar to other multi-carrier transmission technologies, SC-OFDM suffers significant performance degradation resulting from intercarrier interference (ICI) in high mobility environments. Existing techniques for OFDM can be directly adopted in SC-OFDM to improve performance, however, this improved performance comes at costs such as decreased throughput. In this paper, we analyze the effect of ICI on an SC-OFDM system and propose a novel modulation scheme. The proposed Magnitude-Keyed Modulation (MKM) modulation provides SC-OFDM system immunity to ICI and with an easy implementation it significantly outperforms OFDM, SC-OFDM and MC-CDMA systems with Phase Shift Keying (PSK) modulation and Quadrature Amplitude Modulation (QAM) in severe ICI environment. Analysis also illustrates the proposed SC-OFDM system with MKM modulation maintains low PAPR compared to traditional OFDM and SC-OFDM systems with PSK and QAM modulations. Simulation results for different modulation schemes in various ICI environments confirm the effectiveness of the proposed system.
Simple Models for Difficult Electronic Excitations (2018)

We present a single-determinant approach to three challenging topics in the chemistry of excited states: double excitations, charge-transfer states, and conical intersections. The results are obtained by using the Initial Maximum Overlap Method (IMOM) which is a modified version of the Maximum Overlap Method (MOM). The new algorithm converges better than the original, especially for these difficult problems. By considering several case studies, we show that a single-determinant framework provides a simple and accurate alternative for modeling excited states in cases where other low-cost methods, such as CIS and TD-DFT, either perform poorly or fail completely.