gebhart/patrepeval huggingface dataset:
Collaborative Development of a Slim LWD NMR Tool: From Concept to Field Testing (2009)

Abstract Nuclear Magnetic Resonance (NMR) was identified as a critical technology for reducing uncertainty and minimizing risk during the planning phase of a major field development project. The reservoirs in the subject field contain heavy oil/tar in the flanks, and accurate knowledge of viscosity trends becomes essential for the placement of water injectors. Since NMR logs can be used to estimate heavy oil viscosity, the development plan required running logging while drilling (LWD) NMR logs in the extended-reach horizontal injectors, in addition to some selected producers. A program heavily based on slim hole drilling presented a practical challenge for the execution of the development plan, since at the time no service company offered slim hole LWD NMR services. Considering the business impact of this technology gap, the operator decided to collaborate with the service industry to develop LWD NMR technology for hole sizes ranging from 5⅞- to 6⅛-in. Within a year, a joint project was established with a major technology provider for the development of a slim LWD NMR tool. The first two prototypes were delivered for field testing in less than 18 months. The prototypes have been run in nearly a dozen wells to date and in a variety of environments, including extended-reach wells with high salinity muds. Data obtained from drilling and reaming runs agree very well with those from other porosity tools, including wireline NMR. Furthermore, close coordination and cooperation between the operator and the service provider during testing runs have resulted in significant improvements in downhole firmware, data acquisition modes and signal processing. Two factors weigh heavily for the successful fast delivery of the project goals: clear requirements from the operator, and proven expertise in NMR tool design from the technology provider. Given continuing reliable and robust performance from the prototypes, the slim LWD NMR service is expected to be commercially available shortly. In fact, the high level of confidence gained from early field tests has already allowed the use of the data in critical well placement decisions in some wells.
Alignment Dynamics of Single-Walled Carbon Nanotubes in Pulsed Ultrahigh Magnetic Fields (2008)

We have measured the dynamic alignment properties of single-walled carbon nanotube (SWNT) suspensions in pulsed high magnetic fields through linear dichroism spectroscopy. Millisecond-duration pulsed high magnetic fields up to 56 T as well as microsecond-duration pulsed ultrahigh magnetic fields up to 166 T were used. Because of their anisotropic magnetic properties, SWNTs align in an applied magnetic field, and because of their anisotropic optical properties, aligned SWNTs show linear dichroism. The characteristics of their overall alignment depend on several factors, including the viscosity and temperature of the suspending solvent, the degree of anisotropy of nanotube magnetic susceptibilities, the nanotube length distribution, the degree of nanotube bundling, and the strength and duration of the applied magnetic field. To explain our data, we have developed a theoretical model based on the Smoluchowski equation for rigid rods that accurately reproduces the salient features of the experimental data.
ChemInform Abstract: A Catalytic Method for the Reduction of Esters to Alcohols. (1991)

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.
Steric control of CO binding in a totally synthetic heme protein model (1981)

A family of totally synthetic models for the carbon monoxide adducts of heme proteins has been synthesized and applied to the elucidation of the role of steric effects in the relative detoxification of carbon monoxide. The complexes are designed such that a sheltered void of controllable dimensions encompasses the CO binding site. Systematic variations in the available space for the iron-bound CO produce a wide range of equilibrium binding constants (K(CO)). An x-ray structure determination of a CO adduct complex having a crowded CO site reveals that the Fe-C identical withO linkage is bent, and further, the distortion involves both displacement of the Fe-C vector from the normal to the N(4) plane and bending of the Fe-C-O angle.
Copper(I)-mediated C–N/C–C Bond-forming Reaction with Tetrafluoroethylene for the Synthesis of N-Fluoroalkyl Heteroarenes via an Azacupration/Coupling Mechanism (2020)

A novel copper(I)-mediated C–N/C–C bond-forming reaction involving tetrafluoroethylene (TFE), imidazolide or benzimidazolide salts, and aryl iodides has been developed. This three-component coupling reaction can provide highly functionalized N-fluoroalkyl heteroaromatic compounds in up to 98% yield via a one-pot procedure. The azacupration of TFE with the copper(I) imidazolide species to afford the fluoroalkylcopper(I) complex is the key process in the transformation. A novel copper-mediated N-fluoroalkylation of heteroarenes has been developed. Treating an in-situ-generated N–Cu complex with tetrafluoroethylene (TFE) in the presence of iodoarenes furnished the corresponding N- and aryl-difunctionalized tetrafluoroethanes in up to 98% yield. This method enables the synthesis of tetrafluoroethylene-bridged heteroarenes in a one-pot reaction.
Supplementary Figure 3 from Brain Tumor Cells in Circulation Are Enriched for Mesenchymal Gene Expression (2023)

&lt;p&gt;DNA-FISH analysis of non-EGFR-amplified GBM CTCs.&lt;/p&gt;
Initiation of ring-opening metathesis polymerization in protic media. Extension of [Ru(H2O)6]2+ catalyzed polymerizations to less-strained cyclic monomers (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInitiation of ring-opening metathesis polymerization in protic media. Extension of [Ru(H2O)6]2+ catalyzed polymerizations to less-strained cyclic monomersMarcia B. France, Rocco A. Paciello, and Robert H. GrubbsCite this: Macromolecules 1993, 26, 18, 4739–4741Publication Date (Print):August 1, 1993Publication History Published online1 May 2002Published inissue 1 August 1993https://pubs.acs.org/doi/10.1021/ma00070a001https://doi.org/10.1021/ma00070a001research-articleACS PublicationsRequest reuse permissionsArticle Views355Altmetric-Citations49LEARN 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
Laparoscopic Surgery Increases Return to Intended Oncologic Treatment after Resection for Gastric and Esophageal Cancer and Improves Outcomes (2016)

Andreou, Andreas MD; Biebl, Matthias MD; Struecker, Benjamin MD; Chopra, Sascha S. MD; Denecke, Christian MD; Thuss-Patience, Peter C. MD; Sturm, Prisca MD; Sauer, Igor M. MD; Bahra, Marcus MD; Pratschke, Johann MD, PhD, FACS Author Information
Data Plane Framework for Software-Defined Radio Access Network Based on ETSI-Standard Mobile Device Architecture (2019)

This paper addresses how to achieve efficient programmability and software portability in the data plane of a software-defined radio access network (SDRAN). We assume a cloud RAN environment that builds on multi-vendor hardware components. Recent literature on SDRAN data plane indicates that software portability remains an issue in terms of efficient execution of software, even if the software is abstracted from the underlying hardware. In addition, software interfaces typically vary across different hardware components in the SDRAN data plane, leading to platform-dependent software management. Generalizing the European Telecommunications Standards Institute approach for a mobile device architecture, this paper presents a novel SDRAN data plane framework, providing efficient hardware platform-independent programmability and software portability. First, to resolve the software portability issue, the proposed data plane framework employs a specific (radio) virtual machine as well as a radio library; the heterogeneous hardware platforms are abstracted, enabling the joint optimization of the radio application code and hardware platform. Second, to achieve platform-independent software management, the proposed data plane framework adopts a double-layered structure enabling users to exploit high-level software management for the SDRAN data plane. Third, the feasibility of the proposed data plane framework is verified through a proof-of-concept (PoC) system with the proposed double-layered structure. Based on this PoC system, we show that users can efficiently perform software management. According to the numerical results obtained from the PoC system, the proposed double-layered structure introduces negligible additional footprint in terms of computational resources, memory requirements, and latency.
Human T cell hybridomas secreting immune interferon. (1982)

Human T-cell hybridomas were established by hybridization of concanavalin A-stimulated human peripheral blood lymphocytes with a 6-thioguanine-resistant mutant cell line, designated SH9, derived by irradiation from a cloned human cutaneous T lymphoma line, Hut102-B2. High levels of interferon (IFN) were demonstrated in the supernatants of hybridoma L265 and its subclones. Whereas no IFN was detected in SH9 cell cultures, up to 1,330 units of IFN per ml were produced spontaneously by the hybrids. On induction with 12-omicron-tetradecanoylphorbol 13-acetate, IFN synthesis in hybridoma cultures was enhanced 8- to 16-fold. Neutralization with specific antisera and determination of antiviral activities in human and bovine cells showed that the IFN secreted by the hybridomas was immune IFN (IFN-gamma). Analysis of DNA content, karyotype, and cell surface phenotype, including T cell specific antigens and receptors, confirmed the T cell hybrid nature of L265 clones. No correlation was found in the hybridomas between IFN production and the expression of HTLV, a retrovirus released by Hut102-B2 and SH9 cells.
Distinct Evolutionary Pressures Underlie Diversity in Simian Immunodeficiency Virus and Human Immunodeficiency Virus Lineages (2012)

Simian immunodeficiency virus (SIV) infection of rhesus macaques causes immune depletion and disease closely resembling human AIDS and is well recognized as the most relevant animal model for the human disease. Experimental investigations of viral pathogenesis and vaccine protection primarily involve a limited set of related viruses originating in sooty mangabeys (SIVsmm). The diversity of human immunodeficiency virus type 1 (HIV-1) has evolved in humans in about a century; in contrast, SIV isolates used in the macaque model evolved in sooty mangabeys over millennia. To investigate the possible consequences of such different evolutionary histories for selection pressures and observed diversity in SIVsmm and HIV-1, we isolated, sequenced, and analyzed 20 independent isolates of SIVsmm, including representatives of 7 distinct clades of viruses isolated from natural infection. We found SIVsmm diversity to be lower overall than HIV-1 M group diversity. Reduced positive selection (i.e., less diversifying evolution) was evident in extended regions of SIVsmm proteins, most notably in Gag p27 and Env gp120. In addition, the relative diversities of proteins in the two lineages were distinct: SIVsmm Env and Gag were much less diverse than their HIV-1 counterparts. This may be explained by lower SIV-directed immune activity in mangabeys relative to HIV-1-directed immunity in humans. These findings add an additional layer of complexity to the interpretation and, potentially, to the predictive utility of the SIV/macaque model, and they highlight the unique features of human and simian lentiviral evolution that inform studies of pathogenesis and strategies for AIDS vaccine design.
Cerebellar learning: a possible phase switch in evolution (2003)

The strength of synapses from granule cells (GrC) to Purkinje cells (PC) changes, as a function of the interval between firing of GrCs and the PC's climbing fiber (CF). In the case of constant and piecewise constant signals, an adequate tuning could be provided by a phase-based memorizing system, based on the observed properties of cerebellar neurons. We now discuss the cerebellar model for general nonstationary signals.
Lifting Brain Fog (2019)

Effective treatments for cognitive dysfunction, such as declines in memory and other mental faculties often associated with depression or old age, may be within reach, according to Professor Etienne Sibille at the Centre for Addiction and Mental Health (CAMH) and the University of Toronto, Canada. Professor Sibille has shown for the first time that newly synthesised compounds targeting GABA receptors improve specific types of memory in mice, opening the door to the development of effective new pharmacological options. Effective treatments for cognitive dysfunction, such as declines in memory and other mental faculties often associated with depression or old age, may be within reach, according to Professor Etienne Sibille at the Centre for Addiction and Mental Health (CAMH) and the University of Toronto, Canada. Professor Sibille has shown for the first time that newly synthesised compounds targeting GABA receptors improve specific types of memory in mice, opening the door to the development of effective new pharmacological options.
SAR and Scan-Time Optimized 3D Whole-Brain Double Inversion Recovery (DIR) Imaging (2013)

The DIR sequence is commonly used for simultaneous white matter and cerebrospinal fluid (CSF) suppression. Gray matter (GM) imaging is important for cortical lesion detection in neurological diseases, such as epilepsy and Alzheimer's. The aim of this project was to optimize the DIR Turbo-Spin-Echo (TSE) sequence, enabling whole brain acquisition at a resolution of 1 x 1 x 1 mm3 or below, in less than 10 minutes scan time. Both, the DIR preparation module, as well as the TSE imaging module were specifically designed for high field applications to overcome SAR limitations and to optimize image quality.
Convergence of order p compensation in DVB-S2 satellite communication (2011)

info:eu-repo/semantics/published
Hyperbranched Unsaturated Polyphosphates as a Protective Matrix for Long-Term Photon Upconversion in Air (2014)

The energy stored in the triplet states of organic molecules, capable of energy transfer via an emissive process (phosphorescence) or a nonemissive process (triplet-triplet transfer), is actively dissipated in the presence of molecular oxygen. The reason is that photoexcited singlet oxygen is highly reactive, so the photoactive molecules in the system are quickly oxidized. Oxidation leads to further loss of efficiency and various undesirable side effects. In this work we have developed a structurally diverse library of hyperbranched unsaturated poly(phosphoester)s that allow efficient scavenging of singlet oxygen, but do not react with molecular oxygen in the ground state, i.e., triplet state. The triplet-triplet annihilation photon upconversion was chosen as a highly oxygen-sensitive process as proof for a long-term protection against singlet oxygen quenching, with comparable efficiencies of the photon upconversion under ambient conditions as in an oxygen-free environment in several unsaturated polyphosphates. The experimental results are further correlated to NMR spectroscopy and theoretical calculations evidencing the importance of the phosphate center. These results open a technological window toward efficient solar cells but also for sustainable solar upconversion devices, harvesting a broad-band sunlight excitation spectrum.
New GPS Developments and Ashtech M-XII (1989)

Several enhancements on GPS technology are presented. They encom­pass new data processing algorithms, enhanced application techniques, more hardware capabilities, and reduction in size and power consump­tion. Cost reduction is a natural consequence. Use of Doppler measurements for instantaneous (every one second) stationary position fixes is introduced. This technique has the potential of reducing the effect of Selective Availability in static point positioning. It is shown that the combination of Doppler and code phase (pseudo­range) measurements can provide two dimensional deterministic static position fixes (and time) with only two satellites. It also can provide three dimensional position fixes (and time) with three satellites. The proposed techniques expand the usage of GPS in areas with low satel­lite visibility (e.g. forests) and in the interim period while the GPS satellite constellation is not complete. Definition and physical interpretation of GDOP for the hybrid use of Doppler and code phase are presented. 

The notion of Multiple Ramp smoothing of code phase with in­tegrated Doppler is introduced. The result of implementation of this technique in Ashtech XII receivers for real-time differential GPS is given. Minimizing the errors in the use of GPS for aerial photogrammetry applications is discussed. A new technique implemented in Ashtech XII GPS receivers is presented. 

A new generation of GPS receiver (Ashtech M-XII) is introduced. It is capable of performing precision survey (static, kinematic, and pseudo­-kinematic), navigation, and time transfer. The new 12 channel receiver employs higher level of hardware integration. The heart of this 12-channel GPS receiver (including RF, GPS signal processing, and navigation processing) can be housed in a volume of about 50 cubic inches (7 x 6 x 1.2). Adding an 8-lines by 40-character alphanumeric/graphic display, an expanded range (9 to 32 volts) power supply, capacity for 48 hours of data recording, 30% spare volume for future expansions, and mounting each electronic board on a separate sheet of metal for durability, has increased the dimensions to 8.5 x 8 x 3.9 inches.
Wet-Chemistry Strong Metal–Support Interactions in Titania-Supported Au Catalysts (2019)

Classical strong metal-support interactions (SMSI), which play a crucial role in the preparation of supported metal nanoparticle catalysts, is one of the most important concepts in heterogeneous catalysis. The conventional wisdom for construction of classical SMSI involves in redox treatments at high-temperatures by molecular oxygen or hydrogen, sometimes causing sintered metal nanoparticles before SMSI formation. Herein, we report that the aforementioned issue can be effectively avoided by a wet-chemistry methodology. As a typical example, we demonstrate a new concept of wet-chemistry SMSI (wcSMSI) that can be constructed on titania-supported Au nanoparticles (Au/TiO<sub>2</sub>-wcSMSI), where the key is to employ a redox interaction between Au<sup>δ+</sup> and Ti<sup>3+</sup> precursors in aqueous solution. The wcSMSI is evidenced by covering Au nanoparticles with the TiO <sub>x</sub> overlayer, electronic interaction between Au and TiO<sub>2</sub>, and suppression of CO adsorption on Au nanoparticles. Owing to the wcSMSI, the Au-TiO <sub>x</sub> interface with an improved redox property is favorable for oxygen activation, accelerating CO oxidation. In addition, the oxide overlayer efficiently stabilizes the Au nanoparticles, achieving sinter-resistant Au/TiO<sub>2</sub>-wcSMSI catalyst in CO oxidation.
Increased Cardiac Expression of Tissue Inhibitor of Metalloproteinase-1 and Tissue Inhibitor of Metalloproteinase-2 Is Related to Cardiac Fibrosis and Dysfunction in the Chronic Pressure-Overloaded Human Heart (2005)

Cardiac expression of TIMP-1 and TIMP-2 is significantly increased in chronic pressure-overloaded human hearts compared with controls and is related to the degree of interstitial fibrosis.
Seroprevalence of IgG antibodies to Chlamydia pneumoniae and Helicobacter pylori among coronary heart disease patients and normal individuals in South Indian population. (2004)

In recent years, the role of infectious agents in the aetiology of atherosclerotic disease has come to the forefront. In the present study, seroprevalence (IgG) of chlamydia pneumoniae and helicobacter pylori in patients with atherosclerotic coronary heart disease was compared to normal healthy adults. Out of a total of 117 patients 101 had unstable angina (UA) and 16 had chronic stable angina (CSA). C. pneumoniae seropositivity was found in 66% of patients with UA and 94% of CSA patients. The corresponding figures for H. pylori were 58% and 56% respectively. In comparison, 81% of healthy adults were seropositive for C. pneumoniae and 53% for H.pylori. No significant association was found between CHD and the infectious agents. However, this study has revealed a high infection by C. pneumoniae as well as H.pylori in this part of India.
Controlled Release of Damascone from Poly(styrene-co-maleic anhydride)-based Bioconjugates in Functional Perfumery (2013)

Poly(styrene-co-maleic anhydride)s were modified with poly(propylene oxide (PO)-co-ethylene oxide (EO)) side chains (Jeffamine®) with different EO/PO molar ratios, varying between 0.11 and 3.60. These copolymers were then further functionalized with a β-mercapto ketone of δ-damascone. The obtained poly(maleic acid monoamide)-based β-mercapto ketones were then studied as delivery systems for the controlled release of δ-damascone by retro 1,4-addition. The release of δ-damascone, a volatile, bioactive molecule of the family of rose ketones, was studied by dynamic headspace analysis above a cotton surface after deposition of a cationic surfactant containing fabric softening formulation, as a function of the ethylene oxide (EO)/propylene oxide (PO) molar ratio of the grafted copolymer side chains. The polarity of the EO/PO side chain influenced the release efficiency of the damascone in a typical fabric softening application. PO-rich copolymers and the corresponding poly(styrene-co-maleic anhydride) without Jeffamine® side chains were found to be less efficient for the desired fragrance release than the corresponding bioconjugate with a EO/PO ratio of 3.60 in the side chain. This copolymer conjugate seemed to represent a suitable balance between hydrophilicity and hydrophobicity to favor the release of the δ-damascone and to improve the deposition of the conjugate from an aqueous environment onto a cotton surface.