gebhart/patrepeval huggingface dataset:
Combining JPEG2000 Compressed Formats and OGC Standards for Fast and Easy Dissemination of Large Satellite Data (2010)

This article explores ways for disseminating huge dataset imagery compressed in JPEG2000 using OGC standards. Some web service protocols are analyzed and tested (Web Map Service, Web Feature Service, Web Coverage Service, etc) but special attention is given to the new Web Map Tile Service (WMTS) standard that has been recently approved by the OGC Technical Committee. A WMTS server exposes a structure of resolution levels that are cut in small and uniform tiles in a very similar way that JPEG2000 internally does. We discuss how JPEG2000 and WMTS can be combined together and the advantages and disadvantages versus a more common approach based on prerendered classical JPEG or PNG tiles or versus JPIP approaches. Among the different architectures, it is worth mentioning a WMTS server that uses one or some JPEG2000 images internally and serves images to a thin client (a web browser) in a more classical format like JPEG, PNG etc. In this case, WMTS tile matrix set structure can be used to describe the internal structure of the tiled JPEG2000 images to the client, guaranteeing an optimum performance and taking profit of the Internet caching mechanisms.
Contactless power delivery system for mining applications (2002)

The authors present the application of a power delivery system design unifying power electronics and a coaxial-winding transformer for devices that require contactless connection and/or relative motion while delivering large amounts of power. The transformer's unique characteristics and how they might be used to advantage in combination with power electronics are emphasized. Applications which have near-term realizability are flexible power distribution, material handling, autonomous electric vehicles, and battery opportunity recharge. Test results on a scale prototype are presented to verify the concepts.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
EspR, a regulator of the ESX-1 secretion system in Mycobacterium tuberculosis, is directly regulated by the two-component systems MprAB and PhoPR (2014)

The regulatory mechanisms that control the ESX-1 secretion system, a key player in the pathogenesis of Mycobacterium tuberculosis, have not been fully elucidated. However, factors that regulate the ESX-1 substrate EspA usually affect ESX-1 function. Previous studies showed that espA is directly regulated by the nucleoid-associated protein EspR and the two-component system (TCS) MprAB. The PhoPR TCS also activates espA, but the direct target of PhoP was unknown. In this report, we reveal that EspR is directly regulated by MprA and PhoP-Rv, but not by PhoP-Ra. PhoP-Rv and MprA binding sites in the espR promoter were determined by gel-shift and DNase I footprinting assays, which identified a PhoP-protected region centred approximately 205 bp before the espR start codon and that encompasses MprA Region-1, one of two MprA-protected regions. MprA Region-2 is located approximately 60 bp downstream of MprA Region-1 and overlaps a known EspR binding site. Nucleotides essential for the binding of PhoP and/or MprA were identified through site-directed DNA mutagenesis. Our studies also indicate that MprA Region-2, but not MprA Region-1/PhoP region, is required for the full expression of espR. Recombinant strains carrying mutations at MprA Region-2 exhibited lower transcription levels for espR, espA and espD, and had reduced EspR and EspA levels in cell lysates. These findings indicate that EspR may mediate the regulatory effect of PhoPR and MprAB, and provide more insight into the mechanisms underlying ESX-1 control.
Viscoelastic Finite-Difference Modeling of Shallow Seismic Data: Formation of Near-Surface Waveguides (1995)

Waveguides are formed in grossly layered media bounded by strong physical property contrasts. In ocean acoustics, the formation of shallow water waveguides is known to have a significant impact on wave propagation (Brekhovskikh and Lysanov, 1991). We suggest that similar waveguides may exist near the solid earth's surface and investigate the effects of such waveguides on high-resolution shallow seismic data.
Portable device for heart rate monitoring based on impedance pletysmography (2014)

The design of a portable device for heart rate monitoring is described in this work. The cardiac activity is detected through the noninvasively measurement of blood volume changes in the forearm. When blood volume arrives to the forearm from the left ventricle, the electrical properties of the body segment change. These changes, that mainly comprise the electrical impedance of the tissue, are measured through the injection of a safely ac current and the detection of the voltage changes due to blood flow. Such a method is known as electrical impedance plethysmography. A peak-detection-software is used in a microcontroller to estimate the heart rate. Results of measuring the heart rate have shown accuracy that accomplishes the AAMI standards for heart rate monitors.
The Potential of Moving Relays - A Performance Analysis (2012)

In this paper we show the potential of moving relay nodes (MRNs), i.e., relays mounted on top of public transportation vehicles, to improve capacity, reliability and coverage for vehicular users in future wireless networks. To this end, we study and compare the performance of dual-hop MRN assisted transmission, dual-hop transmission assisted by a fixed relay node (FRN) deployed on the street, as well as of the baseline single-hop direct transmission. For an accurate comparison, we optimize the FRN position in terms of outage probability (OP). This position is a function of the pathloss, transmit power and vehicle penetration loss (VPL). The problem is investigated for Rayleigh fading under a fixed cell coverage. When VPL is moderate to high, MRN assisted transmission greatly outperforms transmission assisted by an FRN as well as direct transmission, hence it is very promising for future wireless systems.
Surface Junction Effects on the Electron Conduction of Molecular Wires (2010)

Surface junction effects on the electron conduction of p-phenylene-bridged bis(terpyridine)iron oligomers terminated with a ferrocene moiety were quantitatively analyzed by employing three different surface-anchoring terpyridine ligands. The dependence of the electron-transfer rate constant for oxidation of the ferrocene moiety, k(et), on the distance between the electrode surface and the ferrocene moiety, x, showed that the attenuation factor, beta(d), which indicates the degree of reduction of k(et) with x, was approximately 0.018 in all cases. However, the absolute k(et) value depended strongly on both electronic and steric factors of the surface-anchoring ligand.
A review of distributed power systems. Part II. High frequency AC distributed power systems (2006)

The present development state in high frequency (HF) AC distributed power systems (DPS) is reviewed. First, background and motivations of developing HF AC-DPS are addressed. Two types of basic HF AC-DPSs based on sine wave and square/PWM (pulsewidth modulated) wave bus are described, and the system level design considerations are discussed. Further, the issues and challenges in this research area are identified. These issues include high electromagnetic interference (EMI) level, difficulty to back up power, nonredundant system structure and limited post-regulation capability, etc. Finally, a viable HF AC-DPS is proposed, which is expected to yield effective EMI trade-off and system redundancy.
The low complexity proteins from enteric pathogenic bacteria: taxonomic parallels embedded in diversity. (2003)

The number and functions of the low complexity (LC) proteins from four enteric bacterial pathogens Escherichia coli O157, Vibrio cholerae, Helicobacter pylori and Campylobacter jejuni were compared. For this purpose the LC proteins were grouped into 3 categories for pairwise comparisons. These were COMMON, VARIANT and LC proteins with No Homologues (LCNH). Homologous LC proteins in both species in a given pairwise comparison were grouped as COMMON. LC Proteins of same function but not of low complexity in either of the species in a given pair were grouped as VARIANT. LC proteins without any homologues in either species were grouped as LCNH. Conservation patterns were inferred by comparing them under 3 functional classes CELLULAR PROCESSES (CP), TRANSPORT and MEMBRANE ASSOCIATED (TM) and CHARACTERISTIC (CH). In the COMMON category, highest similarity was found between E. coli O157 and V. cholerae on the one hand and H. pylori and C. jejuni on the other under the functional class CP. This parallels taxonomic classification in that E. coli and V. cholerae are classified under gamma subdivision of proteobacteria whereas H. pylori and C. jejuni are classified under the epsilon subdivision. The data from LCNH group, although more diffuse, was complementary the to pattern drawn from COMMON category in that the numbers of LCNH in the pair [E. coli O157, V. cholerae] and in [H. pylori, C. jejuni] were lowest. No consistent patterns were observed in the VARIANT category. These observations indicate that although low complexity segments are thought to undergo variations, species patterns do exist in a limited set of low complexity proteins that parallels taxonomic classification.
Design and performance of a high-repetition-rate single-frequency Yb:YAG microlaser (2008)

We describe the design and performance of a high-repetition-rate single-frequency passively Q-switched Yb:YAG microlaser operating near 1030 nm. By using short cavity length, an intracavity Brewster polarizer, and an etalon output coupler, we are able to produce ~1-ns-long single-frequency pulses at repetition rates up to 19 kHz without shot-to-shot mode hopping. The laser's output spatial mode is TEM<sub>00</sub> and its pulse energy varies between 31 μJ and 47 μJ depending on repetition rate. Its peak optical-to-optical efficiency is 22%.
Proton nuclear magnetic resonance study of the electronic and molecular structure of the heme crevice in horseradish peroxidase. (1980)

High field proton nuclear magnetic resonance spectroscopy was used to investigate the electronic and molecular structure of the ferric heme in the resting state of horseradish peroxidase. Deuterium labeling of selected positions of hemin and deuterohemin which were subsequently reconstituted into apo-horseradish peroxidase yielded hyperfine shift patterns for the prosthetic group which are consistent with a ferric porphyrin exhibiting appreciable S = 3/2 character in a quantum mixed spin state. All resolved resonances with significant hyperfine shifts can be accounted for by the porphyrin and a proximal histidyl imidazole, although a sixth ligand from the protein cannot be definitely eliminated. The extremely slow exchange rate with bulk water of the proximal histidyl imidazole exchangeable proton and the absence of deviations from Curie behavior for the porphyrin vinyl and propionic acid proton hyperfine shifts indicate a buried heme crevice which is more rigid than in metmyoglobin. The observation of significant deviations from Curie behavior of the proximal histidyl imidazole exchangeable proton in horseradish peroxidase but not in metmyoglobins is suggested to arise from strong hydrogen bonding between the coordinated imidazole and some unspecified protein acceptor residue in the former protein.
PENETAPAN RETENTION TIME PROGESTERON DALAM PELARUT ELUEN PHASE MOBILE MENGGUNAKAN HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (2020)

The aim of this research was to determine the level of stability of Progesterone-retention time on Eluen Phase Mobile (EPM) solution in storage period for six, eight and 12 hours using High Performance Liquid Chromatography (HPLC). The research method used posttest-only control group design by using three treatments and six repetitions. The three repetitions consist into six hours, eight hours and 12 hours. The data were obtained analyzed by Summery Independent T-Test with SPSS 24 for windows. The results showed that the progesterone treatment in EPM solvents with six-hour storage (P1) and eight hours (P2) retention time progesterone are stable but the progesterone treatment in EPM solvent with 12-hour storage (P3) showed an unstable due to storage time. Besides that there are irrelevant peak which show that many pure molecular fractions are separated in the stationary phase so that the molecular structure of the substance begins to break down. Based on these results, it can be concluded that the storage time of Progesterone in Eluen Phase Mobile began to be unstable at 12 hours of storage.
DOWNHOLE SEPARATION TECHNOLOGY—PAST, PRESENT AND FUTURE (2007)

In the 1990s, a new water management tool, downhole separation technology, was developed. It separates oil and gas from produced water inside the wellbore and injects the produced water into the disposal zone. Based on the different fluid the separators handle, they are categorised as downhole oil-water separators (DOWS) and downhole gas-water separators (DGWS). Two types of separators have been used: hydrocyclone and gravity separators. The authors reviewed the previous 59 DOWS installations and 62 DGWS installations worldwide, and discovered that only about 60% achieved success. Some major issues—including high costs, low reliability and low longevity—have slowed down its industrial adoption. Based on the field experiences, a good candidate well must have a high-quality disposal zone with sustainable permeability. To improve the performance of downhole separation tools, it is crucial to better understand the behaviour of the separator under downhole conditions and the behaviour of the injection zone under the invasion of various impurities in the produced water.
ChemInform Abstract: 2‐Arylindole‐3‐acetamides: FPP‐Competitive Inhibitors of Farnesyl Protein Transferase. (2001)

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.
A 57 mW 12.5 µJ/Epoch Embedded Mixed-Mode Neuro-Fuzzy Processor for Mobile Real-Time Object Recognition (2013)

A digital/analog mixed-mode processor is proposed to realize low-power and real-time neuro-fuzzy system for mobile object recognition. It integrates 1024 highly-parallel analog processing element for high dimensional inference operation, and accurate and fast digital accelerator for cascaded learning operation of neuro-fuzzy network. A neuro-fuzzy controller is proposed to manage the mixed-mode operations as a host processor while reducing extra processing delay and power consumption on inter-domain communications. To solve the conventional problems of a large dimensional mixed-mode VLSI system such as throughput degradation due to long channel delay, limited functionality of fixed analog circuits, and mismatches from process variation, the proposed processor adopts 2-stage asynchronous mixed-mode pipeline, flexible channel configuration of each domain, and learning-based calibration technologies respectively. As a result, the processor only consumes 57 mW on average and obtains 12.5 μJ/epoch energy efficiency for on-line learning mixed-mode neuro-fuzzy system with 50 fuzzy rules.
Living Coordinative Chain Transfer Polymerization of 1-Alkenes (2008)

A novel polymerization method, living coordinative chain transfer polymerization (CCTP), was recently developed with monocyclopentadienyl monoamidinate (CpAm) Group 4 metal complexes, which were previously applied for the traditional living coordination polymerization (TLCP) and stereomodulated degenerative transfer living (SDTL) coordination polymerization. In addition to a CpAm precatalyst and a cocatalyst, a chain transfer agent (CTA) was also added to the CCTP system. The CTA undergoes a rapid and reversible chain transfer with the Group 4 metal catalyst, which results in chain growth on an inexpensive main group metal alkyl. This new CCTP technique provides a practical solution towards the intrinsic problem, one chain per catalytic center, for a TLCP polymerization process. The first example of living CCTP was provided with ZnEt2 via Cp*HfMe2[N(Et)C(Me)N(Et)] (35) activated by [PhNHMe2][B(C6F5)4]. It was very efficient for the polymerization of ethene, propene, higher α-olefins and α,ω-nonconjugated dienes, and copolymerization of these monomers. The (co)polymers obtained possess very narrow polydispersity (PDI 1.03-1.10) and tunable molecular weights by several factors including a wide range of equivalents of ZnEt2. The living property of this CCTP system was further confirmed by kinetic studies and end group functionalization. The quantitative chain extension on zinc was clearly shown by in situ NMR spectroscopy. The coordinative chain shuttling polymerization (CCSP) was also studied while binary precatalysts, cocatalysts, or chain transfer agents were applied. The TLCP, SDTL and CCTP of propene via some new CpAm complexes other than 35 were also studied, including the zirconium analogue of 35, Cp*ZrMe2[N(Et)C(Me)N(Et)], and a series of binuclear complexes which have the common structure of [Cp*ZrMe2]2[N(tBu)C(Me)N(CH2)xNC(Me)N(tBu)] (26, x = 8; 27, x = 6; 28, x = 4). The formamidinate precatalyst Cp*ZrMe2[N(tBu)C(H)N(Et)] (12) was also covered in this study. Under both SDTL and CCTP conditions, the binuclear catalysts showed a tether-length dependent chain transfer process as observed by the polymerization results especially by the tacticity of resulting polypropene. Using CCSP process, multi-stereoblock polypropene was successfully prepared via 12 and 27. The structures and properties of these new complexes and (co)polymers were fully characterized by X-ray crystallography, elemental analysis, GPC, DSC, GC and high field NMR spectroscopy.
A privacy-aware architecture for a Web rating system (2009)

Net Trust is a fraud-detection application that enhances security while protecting privacy. Net Trust identifies fraudulent Web sites by aggregating individual opinions, user-selected browsing histories, and third-party information. In this paper, we examine the security properties intrinsic to the implementation of the Net Trust ratings system. The ratings system protects against attacks by limiting diffusion of information to those with whom there is an off-line trust relationship. We also propose a rich-client/ thin-server implementation architecture and examine the privacy properties of this architecture. The privacy properties function not only to prevent the compromising of user confidentiality, but also to make the ratings system more robust. By utilizing trusted off-line social networks, Net Trust enhances the security and privacy of the ratings data. The implementation architecture maintains high data availability while empowering browser-history owners with final control over data access. The Net Trust analysis we present illustrates the mutual reinforcement of individual privacy (defined as user control over personal information) and security (defined as the resiliency of data confidentiality and the efficacy of the rating system).
Ozonization of Oxygen by the Low Pressure Mercury Vapor Quartz Lamp (2) (1989)

Ozone production capacity of the low pressure mercury vapor quartz lamp was measured in order to design industrial equipments for photo oxidation processes.The lamp used in the experiments was made from conventional quartz tube. A main spectral line is 253.7 nm in cylinder shaped 8 W lamps. Supplying air into an annular space of a double pipe structure, author examined the relation betwwen the concentration of ozone produced and gas flow rate (0.025-10 l/min). In the measurement the exposing length of the lamp was changed (2.5-105 mm), keeping the width of the annular space constant.Here, author obtained the relative formula between supplied gas quantity and the concentration of ozone produced on the log-paper.The ozone concentration increased with gas flow rate in the low rate range. However, it became in inverse proportion in the range of high gas flow rate. That is, a reversing zone of concentration was found in the experiments.
Carotenoids and abscisic acid (ABA) biosynthesis in higher plants (1991)

Recent research has revealed that abscisic acid (ABA), synthesised in response to water stress, is an apo‐carotenoid. Two potential carotenoid precursors, 9′‐ cis ‐neoxanthin and 9‐ cis ‐violaxanthin, have been identified in light‐grown and etiolated leaves, and in roots of a variety of species. Experiments utilizing etiolated Phaseolus vulgaris leaves and deuterium oxide strongly suggest that 9′‐ cis ‐neoxanthin, synthesised from all‐ trans ‐violaxanthin, is the immediate pre‐cleavage precursor of ABA. The cleavage of 9′‐ cis ‐neoxanthin, performed by an inducible and specific dioxygenase, is likely to be the rate‐limiting step in ABA biosynthesis. Any apocarotenoids formed as by‐products of cleavage are probably rapidly degraded by lipoxygenase or related enzymes. After cleavage xanthoxin is converted via ABA‐aldehyde to ABA by constitutive enzymes in the cytosol.
A Drosophila mutant with a temperature-sensitive block in nerve conduction. (1978)

A mutant, napts (no action potential, temperature-sensitive), is described in which axonal conduction fails at high temperature. Synaptic transmission at the larval neuromuscular junction is unimpaired. Larvae and adults are rapidly paralyzed at restrictive temperatures; they recover rapidly when the temperature is decreased. The mutant gene is recessive and is located on the second chromosome at map position 56.
Integrin Signaling via RGD Peptides and Anti-β1 Antibodies Confers Resistance to Apoptosis in Islets of Langerhans (2006)

Islet transplantation is associated with a high rate of early graft failure caused by early immune attack and poor functionality of islets. Apoptosis of islet cells appears soon after islet isolation and primarily involves the beta-cell. The purpose of this study was to determine the effect of ligation to extracellular matrix (ECM) proteins on survival of the islets of Langerhans following islet isolation. Islets that had been cultured for 24 h on collagen type I showed an islet survival of 59.7 +/- 8.7%, while islets that had been cultured on collagen type IV and laminin showed an islet survival of 88.6 +/- 10.3 and 94.3 +/- 5.6%, respectively. Islets that had been pretreated with anti-beta1 antibodies and argenin-glycin-aspartic acid (RGD) peptides showed a decrease in the level of apoptosis by a factor of 2.5 and 3.1, respectively, and an increase of phospho-Akt Ser 473 activity by a factor of 3.1 and 2.9, respectively, compared with untreated islets. When detached from their natural ECM surrounding in the pancreas, islet cells undergo apoptosis, unless islets are cultured on collagen IV or laminin or treated with anti-beta1 integrin antibodies or RGD peptides to mimic ECM ligation. These results indicate that inhibition of anoikis may offer opportunities to improve function and viability of islet cells.
Room-Temperature All-Semiconducting Sub-10-nm Graphene Nanoribbon Field-Effect Transistors (2008)

Sub-10 nm wide graphene nanoribbon field-effect transistors (GNRFETs) are studied systematically. All sub-10 nm GNRs afforded semiconducting FETs without exception, with Ion/Ioff ratio up to 10(6) and on-state current density as high as approximately 2000 microA/microm. We estimated carrier mobility approximately 200 cm2/V s and scattering mean free path approximately 10 nm in sub-10 nm GNRs. Scattering mechanisms by edges, acoustic phonon, and defects are discussed. The sub-10 nm GNRFETs are comparable to small diameter (d< or = approximately 1.2 nm) carbon nanotube FETs with Pd contacts in on-state current density and Ion/Ioff ratio, but have the advantage of producing all-semiconducting devices.