gebhart/patrepeval huggingface dataset:
Spherical MSU-1 Mesoporous Silica Particles Tuned for HPLC (2001)

Among the mesoporous silica micellar templated structures (MTSs), MSU-X silica, obtained through an N0I0 assembly between non-ionic polyethyleneoxide-based surfactants (N0) and silica neutral inorganic precursors (I0), exhibits a regular ordered structure with a 3D wormhole porous framework and an easily controlled pore size. These materials have been tested for applications requiring both a narrow mesopore size distribution and isotropic properties. A specific double-step synthesis that we developed recently for MSU-X materials has allowed us to prepare mesoporous silica particles with the required shape, size, and properties. Both the particles’ synthesis and comparative HPLC separation tests with a commercial ungrafted silica HPLC powder of identical shape and size are reported.
Novel synthesis of .alpha.-methylene carbonyl compounds (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel synthesis of .alpha.-methylene carbonyl compoundsTatsuya Shono, Ikuzo Nishiguchi, Tawara Komamura, and Manji SasakiCite this: J. Am. Chem. Soc. 1979, 101, 4, 984–987Publication Date (Print):February 1, 1979Publication History Published online1 May 2002Published inissue 1 February 1979https://pubs.acs.org/doi/10.1021/ja00498a031https://doi.org/10.1021/ja00498a031research-articleACS PublicationsRequest reuse permissionsArticle Views1787Altmetric-Citations36LEARN 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
Dehydrierende Meyer‐Schuster‐Umlagerung: Gold‐katalysierte Synthese von Alkinen (2013)

Abstract Leicht zugängliche Propargylester werden durch eine oxidative Gold‐katalysierte Reaktion in die invertierten Alkinylketone überführt. Der Gagosz‐Katalysator in Kombination mit PhI(OAc) 2 erweist sich als das beste System für diese Umwandlung, und 18 Beispiele mit Ausbeuten bis zu 80 % werden beschrieben. Die Ergebnisse lassen darauf schließen, dass die Dreifachbindung im Produkt durch Eliminierung aus einer Vinylgold‐Zwischenstufe entsteht. Formal ist diese neue Reaktion eine dehydrierende Meyer‐Schuster‐Umlagerung.
Combining 16S rRNA gene variable regions enables high-resolution microbial community profiling (2018)

SMURF enables the identification of near full-length 16S rRNA gene sequences in microbial communities, having resolution superior compared to current techniques. It may be applied to standard sample preparation protocols with very little modifications. SMURF also paves the way to high-resolution profiling of low-biomass and fragmented DNA, e.g., in the case of formalin-fixed and paraffin-embedded samples, fossil-derived DNA, or DNA exposed to other degrading conditions. The approach is not restricted to combining amplicons of the 16S rRNA gene and may be applied to any set of amplicons, e.g., in multilocus sequence typing (MLST).
Signaling Quality in an E-Commerce Environment (2006)

Abstract “Quality” is a unique concern in food marketing with powerful strategic connotations and consumer emotion. Consequently, retailers, with the help of food processors, have built their industry around communications with consumers which compare the value of one product over another using key quality attributes as carriers of that value. This involves both simple and complex signaling techniques that consumers have grown accustom to. With the onset of online food sales, many of these signaling techniques are less effective. This research evaluates food quality communication signals, presenting findings from three related E-Grocery studies, linked through a meta analysis.
Non-Intrusive Reference Governors for Over-Actuated Linear Systems (2016)

The technical note presents the design of a reference governor that manages directly the state and input references for constrained output regulation problems. In particular, for the class of so-called weakly input redundant linear systems, the proposed method leads to a taxonomy in terms of non-intrusive and intrusive reference governors, on the basis of the effect of reference manipulation on the tracking error. Non-intrusive references constitute a degree of freedom that one can freely select to meet constraint requirements; intrusive references are also assignable during transient, but shall be forced to vanish in steady state in order to achieve exact regulation. A simulation study illustrates the features of the proposed approach in support of the theoretical findings.
Association between genetic variants of DVWA and osteoarthritis of the knee and hip: a comprehensive meta-analysis. (2015)

Recently, double von Willebrand factor domain A (DVWA) gene, a previously unknown gene, was revealed to contain several single nucleotide polymorphisms (SNPs) that showed consistent association with knee osteoarthritis (OA) in Japanese and Chinese cohorts. However, subsequent studies failed to confirm this result in several different populations. To deal with the issues raised by inconsistent results among those studies, we investigated the association between DVWA and OA using meta-analytic techniques, combining all published data up to December 2014. 10 independent samples from 4 teams contributed data for a possible association between SNP rs7639618 and knee or hip OA. The total number of cases and controls of this SNP was respectively 4,142 versus 6,575 for knee OA, and 2,325 versus 2,914 for hip OA. A trend of significant association was observed in the combined population with knee OA (P=0.06), and a significant difference was identified between patients with knee OA and controls for the G-allele of rs7639618 (P=0.02). Together with the reported functional studies, our results indicate that DVWA may have a small but strong effect on the susceptibility to knee OA, at least in Asian population. Further functional studies are needed to determine the underlying variation of DVWA and to relate this to the pathophysiology of OA.
Healing of rickets with phosphate supplementation in the hypophosphatemic male mouse. (1981)

The hypophosphatemic male mouse, an animal model for human vitamin D-resistant rickets, is characterized by low serum phosphorus concentration due to increased urinary phosphate excretion, rickets, osteomalacia, and dwarfism. Because phosphate administration can heal rickets but not osteomalacia in the human disease, we have compared the effect of phosphate supplementation on the epiphyseal and endosteal bone mineralization in the mutant animal. Phosphate was given in drinking water for 137 d and the biochemical and bone responses were assessed by analytical and histomorphometric methods. Treatment with phosphate normalized the endochondral calcification (vertebral growthplate thickness: 83 +/- 5 SD vs. controls [+/Y] 73 +/- 8 micrometers, NS), but did not correct the endosteal bone mineralization (mineralization front: 13.6 +/- 2.7 vs. +/Y 67.1 +/- 6.9% osteoid surface, P less than 0.001, endosteal mean osteoid seam thickness: 46.4 +/- 6.1 vs. +/Y 3.3 +/- 0.3 micrometers, P less than 0.001). In addition, both osteoblastic and osteoclastic recruitment and activity were stimulated, as a result of a probable increase in parathyroid hormone secretion following the phosphate induced fall in serum calcium. Our results show that in the hypophosphatemic mouse, phosphate supplementation can heal the epiphyseal, but not the endosteal defective bone mineralization. Then, the biochemical and skeletal response to phosphate therapy appear to be similar to what we have observed in the human disease, further stressing the interest of the animal model.
Human Papillomavirus Type, Proliferative Activity, and p53 (2000)

Our observations suggest that human papillomavirus typing may be helpful in identifying patients with aggressive recurrent laryngeal papillomatosis. The weak association between p53 indexes and procedures per year and virus type may have some predictive value in identifying aggressive lesions.
Basic Performance Measurements of the Intel Optane DC Persistent Memory Module (2019)

Scalable nonvolatile memory DIMMs will finally be commercially available with the release of the Intel Optane DC Persistent Memory Module (or just "Optane DC PMM"). This new nonvolatile DIMM supports byte-granularity accesses with access times on the order of DRAM, while also providing data storage that survives power outages. This work comprises the first in-depth, scholarly, performance review of Intel's Optane DC PMM, exploring its capabilities as a main memory device, and as persistent, byte-addressable memory exposed to user-space applications. This report details the technologies performance under a number of modes and scenarios, and across a wide variety of macro-scale benchmarks. Optane DC PMMs can be used as large memory devices with a DRAM cache to hide their lower bandwidth and higher latency. When used in this Memory (or cached) mode, Optane DC memory has little impact on applications with small memory footprints. Applications with larger memory footprints may experience some slow-down relative to DRAM, but are now able to keep much more data in memory. When used under a file system, Optane DC PMMs can result in significant performance gains, especially when the file system is optimized to use the load/store interface of the Optane DC PMM and the application uses many small, persistent writes. For instance, using the NOVA-relaxed NVMM file system, we can improve the performance of Kyoto Cabinet by almost 2x. Optane DC PMMs can also enable user-space persistence where the application explicitly controls its writes into persistent Optane DC media. In our experiments, modified applications that used user-space Optane DC persistence generally outperformed their file system counterparts. For instance, the persistent version of RocksDB performed almost 2x faster than the equivalent program utilizing an NVMM-aware file system.
Peak-to-Average Ratio Reduction for MIMO and Multi-user OFDM Systems (2016)

A major drawback of MIMO-OFDM systems is its high Peak-to-Average Ratio (PAR). The signal is clipped when the peak values are higher than the linear operation range of non-linear devices. In order to avoid clipping the signal above a certain threshold, measure must be taken to limit all peaks crossing the threshold value. In this thesis, we therefore investigate and address the PAR problem of different MIMO-OFDM scenarios and provide countermeasures to limit the peak excursions in MIMO-OFDM systems.
First, we extend the Tone-Reservation algorithm for PAR reduction of MIMO-OFDM systems. For a point-to-point scenario, a spiky function is generated on the weakest eigenchannel not suited for data transmission. This spiky function is then iteratively used for PAR reduction of the transmit signal. For a multi-user broadcast scenario, the spiky function is generated on a small percent of tones reserved on all spatial dimensions, in the conventional manner. This spiky function is then used to limit the peak excursions of the transmit signal.
Second, we introduce a novel Least-Squares iterative PAR reduction algorithm for MIMO-OFDM
scenarios. For a P2P scenario, the weakest eigenchannel is used to approximate the peak excursions on the remaining spatial dimensions in a least-squares fashion. This model function is then added to the transmit signal for PAR reduction. The algorithm is thoroughly investigated in terms of the capacity loss and the mean power increase due to the modeled function. Moreover, for a broadcast scenario, we consider that one user is inactive and the channel associated to it is not used. This inactive channel is then used to approximate and model the peak excursions on the remaining spatial dimensions in the similar fashion.
In a further part of this thesis, we consider PAR reduction using Trellis Shaping for single antenna systems. We concatenate an optimized irregular LDPC code with Trellis Shaping for PAR reduction.
Estimation of source signature and sea bottom characteristics from seabed reflected waves (1982)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1982Estimation of source signature and sea bottom characteristics from seabed reflected wavesAuthors: K. A. BerteussenO. AlstadK. A. BerteussenSaga Petroleum, Norway and O. AlstadSaga Petroleum, Norwayhttps://doi.org/10.1190/1.1826879 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1826879FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1982ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1982 Pages: 520 publication data© 1982 Copyright © 1982 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 24 Mar 2005 CITATION INFORMATION K. A. Berteussen and O. Alstad, (1982), "Estimation of source signature and sea bottom characteristics from seabed reflected waves," SEG Technical Program Expanded Abstracts : 181-183. https://doi.org/10.1190/1.1826879 Plain-Language Summary PDF DownloadLoading ...
Economic Impacts of Bt Cotton Adoption: A National and Regional Assessment (2000)

This study uses a quadratic programming model to estimate impacts of Bt cotton adoption on consumer benefits, cotton program outlays, and producer returns, by state and by grower adoption status. Three scenarios were considered simulating low, moderate, and high impacts of Bt cotton adoption. For the moderate impact scenario, U.S. benefits from Bt cotton adoption grew from $44 million in 1996 to $66 million in 1998. Annual U.S. consumer benefits ranged from $46– $55 million. Benefits to Bt adopters grew from $57 million in 1996 to $97 million in 1998. Losses to non-adopters fell from -$59 million in 1996 to -$8 million in 1998 as rising commodity program payments countered the impact of lower prices. In 1998, gains to Arizona Bt cotton adopters (net of adoption costs) were about $9 million, averaging over $15,000 per adopting farm.
Operation Data Management System Based on MySQL for SSRF (2012)

SSRF use the EPICS(Experimental Physics and Industrial Control System) system which is based on Linux for its control.Its data management system is based on the Channel Archiver which is an additional tool for getting system running data.But the Channel Archiver that we are still using has many defects in funtionality.So we use MySQL to manage the running data of SSRF for remedy.To achieve this,we developed a engine for sending data to MySQL server from Channel Archiver.In addition,we developed a web based data query system,which is more user friendly and more effective than before.Moreover,we developed a new suggestion method for user input,which make the UI more effective.
Bone Marrow Stromal Cell-derived Growth Inhibitor Inhibits Growth and Migration of Breast Cancer Cells via Induction of Cell Cycle Arrest and Apoptosis (2004)

Genes encoding growth-inhibitory proteins are postulated to be candidate tumor suppressors. The identification of such proteins may benefit the early diagnosis and therapy of tumors. Here we report the cloning and functional characterization of a novel human bone marrow stromal cell (BMSC)-derived growth inhibitor (BDGI) by large scale random sequencing of a human BMSC cDNA library. Human BDGI cDNA encodes a 477-amino acid residue protein that shares high homology with rat and mouse pregnancy-induced growth inhibitors. The C-terminal of BDGI is identical to a novel human pregnancy-induced growth inhibitor, OKL38. BDGI is also closely related to many other eukaryotic proteins, which together form a novel and highly conserved family of BDGI-like proteins. BDGI overexpression inhibits the proliferation, decreases anchorage-dependent growth, and reduces migration of MCF-7 human breast cancer cells, whereas down-regulation of BDGI expression promotes the proliferation of MCF-7 and HeLa cervix epitheloid carcinoma cells. Interestingly, the inhibitory effect of BDGI on MCF-7 cells is more potent than that of OKL38. We demonstrate that BDGI induces cell cycle arrest in S phase and subsequent apoptosis of MCF-7 cells, which is likely to account for the antiproliferative effects of BDGI. This process may involve up-regulation of p27Kip1 and down-regulation of cyclin A, Bcl-2, and Bcl-xL. The inhibitory effect of BDGI on cell proliferation and the induction of apoptosis were also observed in A549 lung cancer cells but not HeLa cells. These results indicate that BDGI might be a growth inhibitor for human tumor cells, especially breast cancer cells, possibly contributing to the development of new therapeutic strategies for breast cancer.
Visualization of Ambient Mass Spectrometry with the Use of Schlieren Photography (2016)

This manuscript outlines how to visualize mass spectrometry ambient ionization sources using schlieren photography. In order to properly optimize the mass spectrometer, it is necessary to characterize and understand the physical principles of the source. Most commercial ambient ionization sources utilize jets of nitrogen, helium, or atmospheric air to facilitate the ionization of the analyte. As a consequence, schlieren photography can be used to visualize the gas streams by exploiting the differences in refractive index between the streams and ambient air for visualization in real time. The basic setup requires a camera, mirror, flashlight, and razor blade. When properly configured, a real time image of the source is observed by watching its reflection. This allows for insight into the mechanism of action in the source, and pathways to its optimization can be elucidated. Light is shed on an otherwise invisible situation.
6-k/spl Omega/, 43-Gb/s differential transimpedance-limiting amplifier with auto-zero feedback and high dynamic range (2003)

A high-gain, 43-Gb/s InP HBT transimpedance-limiting-amplifier (TIALA) with 100-/spl mu/A/sub pp/ sensitivity and 4.5-mA/sub pp/ input overload current is presented. The circuit also operates as a limiting amplifier with 40-dB differential gain, better than -15-dB input return loss, and a record-breaking sensitivity of 8 mV/sub pp/ at 43 Gb/s. It features a differential TIA stage with inductive noise suppression in the feedback network and consumes less than 450-mW from a single 3.3-V supply. The TIALA has 6-k/spl Omega/ (76 dB/spl Omega/) differential transimpedance gain, 35-GHz bandwidth, and comprises the transimpedance and limiting gain functions, an auto-zero DC feedback circuit, signal level monitor and slicing level adjust functions. Other important features include 45-dB isolation and 800-mV/sub pp/ differential output.
Investigation of the effect of UV-Crosslinking on Isoporous membrane stability (2011)

Polymeric isoporous membranes have many interesting properties leading to various specific applications in different fields. However, such structures also have one main drawback, namely their poor solvent stability, which should be improved to extend the range of their possible applications. Therefore, this project will focus on the enhancement of solvent stability of polymeric isoporous membranes by UV cross-linking. Stable isoporous films were obtained by creating honeycomb membranes from star polystyrene (PS) and its derivatives. The star PS was synthesized by Atom Transfer Radical Polymerization (ATRP) method and was then functionalized with methacrylate groups. The isoporous films made from these materials maintained the honeycomb structures after curing by UV light and immersion in chloroform. The crosslinking of PS under UV light exposure rather than the cross-linking of the methacrylates groups was responsible for the solvent stability of these membranes. To further investigate the effect of specific end-groups on the film stability, PEG2k-G3-PCL30 linear-dendritic-linear hybrid polymers and its derivatives with allyl, acrylate, methacrylate end-groups were employed to cast films. Functionalized PEG2k-G3-PCL30 linear-dendritic-linear hybrid isoporous films were cross-linked by UV-induced thiol-ene reactions and allyl reactions. However, no significant increase in the solvent stability of these kinds of films was observed. When mixing PEG2k-G3-PCL30 linear-dendritic-linear hybrids with star PS, stable isoporous films could be obtained. The pores became smaller but the isoporous structures were still kept.
Vibrational Spectroscopy to the Analysis and Study of Forages (2001)

Abstract The beginnings of the use of modern vibrational spectroscopy in agriculture were with near infrared spectroscopy (NIRS) and the early definitive studies were conducted on forages. These beginnings can be traced by the work accomplished by Agricultural Research Service's National Near Infrared Research Project, which began in 1978 and culminated in 1988 with the issue of the first Association of Official Analytical Chemists (AOAC), International Official Method for protein and Acid Detergent Fiber by NIR. NIRS models were developed for the analysis of crude protein, moisture/dry matter, permanganate lignin, acid detergent fiber, neutral detergent fiber, acid detergent lignin, and in vitro and in vivo digestibility. This article discusses the requirements of an analytical method as it applies to chemometric methods and NIRS, in particular, by answering three questions and those requirements, which differ for the establishment of “Official Methods”. Other vibrational spectroscopies as applied to forage analysis are discussed in brief.
Development of DC Magnetization Prevention Control for a Zero-sequence-cancelling Modular Multilevel Converter (2019)

This paper proposes a DC magnetization prevention control in the zero-sequence-cancelling modular multilevel converter (ZC-MMC) as a buffer reactor-less MMC circuit topology. Using the leakage inductance of a zig-zag transformer, the transformer can function as a buffer reactor. By applying a zig-zag connection, DC magnetic flux caused by the zero-sequence DC current flowing through the transformer can be canceled. On the contrary, the core of the transformer is DC-magnetized when a non-zero-sequence DC current is flowing through the transformer. The transformer abnormally heats due to the magnetic saturation of the core caused by DC magnetization. To prevent DC magnetization, DC magnetization prevention control in ZC-MMC was proposed. Using a simulation model and 1-kW experimental setup, DC magnetization prevention control was confirmed.