gebhart/patrepeval huggingface dataset:
Improving Airplane Touchdown Control by Utilizing the Adverse Elevator Effect (2014)

The main objective of this original research article is to understand the short-term dynamic behavior of the transport-category airplane during landing flare elevator control application. Increasing the pitch angle to arrest the sink rate, the elevator will have to produce negative lift to rotate the airplane’s nose upward. This has an immediate adverse effect of initially accelerating airplane downward. A mathematical model of landing flare based on the flat-Earth longitudinal dynamics of rigid airplane was developed which is realistic only on very short time-scales as pitch stiffness and damping were neglected. Pilot control scenarios using impulse and step elevator pull-up and push-over were used. Laplace integral transforms were used to transform ordinary differential equations into algebraic ones in complex domain. Transfer functions were defined for airplane response in pitch, angle of attack (AOA) and height. Based on the understanding and utilization of the adverse elevator effect a new landing flare technique is suggested which can substantially reduce scatter of touchdown points and increase consistency of landings. The new pull-push landing touchdown technique could reduce the probability of runway overruns and increase airframe life-time and is especially useful when landing on contaminated runways and/or during Land and Hold Short (LAHSO) operations.
Improve Healthcare Safety Using Hash-Based Authentication Protocol for RFID Syste (2018)

Medication errors are now rapidly increasing that result in a serious impact on patients Safety. A lot of automated techniques have come up using the Radio-Frequency Identification (RFID) Technology that has now been successfully implemented in hospitals and healthcare institutions. The data that is being transmitted is highly sensitive and has to be authenticated between the server and the tag. Such a mutual authentication is highly necessary to enhance the safety protocols. An RFID authentication protocol using Elliptical Curve Cryptography could overcome security weaknesses and eventually lead to better performance. In order to achieve better security and quicker runtime, ECC must have smaller keys compared to non-ECC. In this paper, elliptic curves over a finite field are being structured that belongs to the category of public-key cryptography. This proposed protocol system not only increases the security to a greater extent but also enhances the performance by enabling large-scale implementations. As security is an instrumental aspect of cryptography, such a proposed system is effectual.
Impact of Homopolymer Pore Expander on the Morphology of Mesoporous Carbon Films Using Organic–Organic Self-Assembly (2012)

Soft templated mesoporous carbon films (ca. 60 nm thick) are fabricated by the cooperative assembly of poly(styrene-block-ethylene oxide) (PS-b-PEO) with phenolic resin, where the pore sizes are tuned by the addition of polystyrene oligomers (hPS) to this self-assembling system. Significant differences in the morphology and pore expansion are found for the thin films in comparison to previously reported bulk powders using a similar system. The film porosity is nearly independent of swelling agent content for addition of up to 10 wt % hPS; this limited effect is attributed to surface segregation of the hPS on the basis of wetting considerations, which decreases the effective concentration of hPS in the hydrophobic domains. The templated synthesis yields a relatively narrow pore size distribution for <10 wt % hPS, but then the pore size distribution broadens and begins to shift to larger pore sizes for >10 wt % hPS. Elliptical pores are formed due to the uniaxial contraction that occurs during carbonization; interestingly, the apparent contraction increases as hPS loading increases for the films, which also is attributed to surface wetting of the hPS oligomer. Additionally, the pores are not as well-ordered in the films as for the powders. We hypothesize that the poor order is a result of rapid vitrification during spin-coating that leads to initially a disordered mesostructure and subsequent heating leads to cross-linking of the phenolic resin that occurs more rapidly than the chains in the thin films can reorganize into a highly ordered structure, thus yielding a kinetically trapped mesostructure.
Anti-inflammatory Activity of Rhamnetin and a Model of Its Binding to c-Jun NH<sub>2</sub>-Terminal Kinase 1 and p38 MAPK (2014)

Rhamnetin (1), a commonly occurring plant O-methylated flavonoid, possesses antioxidant properties. To address the potential therapeutic efficacy of 1, its anti-inflammatory activity and mode of action in mouse macrophage-derived RAW264.7 cells stimulated with lipopolysaccharide (LPS) or interferon (IFN)-γ were investigated. Rhamnetin (1) suppressed mouse tumor necrosis factor (mTNF)-α, mouse macrophage inflammatory protein (mMIP)-1, and mMIP-2 cytokine production in LPS-stimulated macrophages. A nontoxic dose of 1 suppressed nitric oxide production. It was found that the anti-inflammatory effects of 1 are mediated by actions on the p38 mitogen-activated protein kinase (MAPK), extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and cyclooxygenase (COX)-2 pathways in LPS- or IFN-γ-stimulated RAW264.7 cells. It was determined that 1 binds to human JNK1 (9.7 × 10(8) M(-1)) and p38 MAPK (2.31 × 10(7) M(-1)) with good affinity. The binding model showed interactions with the 3'- and 4'-hydroxy groups of the B-ring and the 5-hydroxy group of the A-ring of 1. Further, 1 exerted an anti-inflammatory effect, reducing the levels of pro-inflammatory cytokines and mediators.
FK409, a novel vasodilator isolated from the acid-treated fermentation broth of Streptomyces griseosporeus. III. Reaction mechanism and synthesis. (1989)

FK409 (1), a novel vasodilator, is a semi-artificial fermentation product of Streptomyces griseosporeus No. 16917, which was cultured in a medium containing nitrate. And the acid-treatment of the broth is essential for the generation of FK409. FK409 was considered to be formed via a novel synchronous nitrosation-nitration reaction of FR-900411 (2) which was produced by the strain as a precursor of FK409. The conversion of FK-900411 to FK409 proceeded under acidic conditions with nitrite formed by microbial reduction of nitrate. Total synthesis of FK409 was achieved starting from (E)-2-ethyl-2-butenal (3) via a nitrosation reaction of FR-900411 (2) as a key step.
Effect of lytic peptides on selected fish bacterial pathogens* (1990)

Abstract. Two synthetic lytic peptides, derivatives of the naturally occurring lytic peptide cecropin B, were tested for their effect on eight pathogenic fish bacteria. All bacteria were grown on tryptic soy agar at 30°C. Four levels (dilutions) of lytic peptides were incubated with viable cells in the log phase for 1 h. Standard plate counts were made after 24±2h with control plates (no toxin) representing 100% survival. Significant differences ( P <0.05) in the toxicity of the two peptides were found for six out of eight bacterial pathogens. Peptide concentration or dilution level also caused significant difference ( P <0.01) in bacterial counts. Peptide type by dilution level interactions were significant ( P <0.01) for only two bacterial pathogens. The LD 50 . in molar concentrations of the lytic peptides on the bacterial pathogens, ranged from approximately 10 −6 to 10 −9 . The possible role of utilizing these peptides to enhance disease resistance in aquaculture is discussed.
Intravitreal Injection of Triamcinolone for Diffuse Diabetic Macular Edema (2003)

Intravitreal injection of 25 mg of triamcinolone acetonide may be beneficial for improving visual acuity in patients with clinically significant diffuse diabetic macular edema.
An evaluation of cultivated corneal limbal epithelial cells, using cell-suspension culture. (2002)

Corneal epithelial cells were successfully regenerated in vitro by a cell-suspension culture system. The suspension-cultured epithelium must include some stem cells and morphologically is significantly superior to explant-cultured epithelium. Thus, this new technique is potentially more suitable for cultivated corneal limbal epithelial transplantation.
Evaluation of a rotating drum mixer (1991)

A "rotating drum" type mixer was tested to determine if it could produce a uniformly mixed feed. Feed was manufactured in four separate trials, which examined addition sequence, mixing time, mixer capacity, and liquid addition. Uniformly mixed feed was obtained after 8 min, when ingredients were properly sequenced and mixed. Smaller batch sizes decreased the time required to obtain a uniform mixture. The mixer distributed liquid uniformly through the feed and had excellent clean-out capabilities.; Swine Day, Manhattan, KS, November 21, 1991
Use of Cellulose Nanofibers as an Electrode Binder for Lithium Ion Battery Screen Printing on a Paper Separator (2018)

Water-based inks were formulated using cellulose nanofibers as a binder in order to directly front/reverse print lithium ion cells on a paper separator. Moreover, the high cohesion of electrodes as provided by cellulose nanofibers allowed for the embedding metallic current collectors in the electrodes during the printing stage, in order to develop a one-step printing and assembling process. Positive and negative inks based on LiFePO₄, or graphite, respectively, and cellulose nanofibers, displayed rheological properties complying with a variety of printing processes, as well as with screen printing. Printed cells exhibited high electrical conductivity and adhesion between current collectors and inks, i.e., up to 64 ± 1 J/m². Electrochemical cycling tests at C/10 showed a reversible capacity during the first cycle of about 80 mAh/g, which slightly decayed upon cycling. Preliminary results and assembling strategies can be considered as promising, and they represent a quick solution for the manufacturing of lithium ion batteries. Work is in progress to improve these processing issues and the cycling performances of Li-ion cells.
Stability of Decision Feedback Inverses (1976)

The method of inversion of linear discrete time systems utilizing quantized feedback is examined, and a stability concept is developed. The application in mind is decision feedback equalization (DFE). Sets of necessary conditions and sufficient conditions for stability are derived. A lower bound for the probability of recovery from error, and an upper bound for the mean recovery time are obtained. It is suggested that a stability index for each system could be defined. The bounds derived do not depend on the nature of the noise or the channel impulse response except through its length.
A simple and efficient method for covalently attaching oligonucleotides to a cellulose support matrix (1988)

Conference Article| June 01 1988 A simple and efficient method for covalently attaching oligonucleotides to a cellulose support matrix UTA B. VOSS; UTA B. VOSS 1Department of Biochemistry, Charing Cross and Westminster Medical School, Fulham Palace Road, London W6 8RF, U.K. Search for other works by this author on: This Site PubMed Google Scholar ALAN D. B. MALCOLM ALAN D. B. MALCOLM 1Department of Biochemistry, Charing Cross and Westminster Medical School, Fulham Palace Road, London W6 8RF, U.K. Search for other works by this author on: This Site PubMed Google Scholar Biochem Soc Trans (1988) 16 (3): 367–368. https://doi.org/10.1042/bst0160367a Article history Received: December 01 1987 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation UTA B. VOSS, ALAN D. B. MALCOLM; A simple and efficient method for covalently attaching oligonucleotides to a cellulose support matrix. Biochem Soc Trans 1 June 1988; 16 (3): 367–368. doi: https://doi.org/10.1042/bst0160367a Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1988 Biochemical Society1988 Article PDF first page preview Close Modal You do not currently have access to this content.
Reversible Covalent Attachment of C60 to a Polymer Support (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReversible Covalent Attachment of C60 to a Polymer SupportKaren I. Guhr, Michael D. Greaves, and Vincent M. RotelloCite this: J. Am. Chem. Soc. 1994, 116, 13, 5997–5998Publication Date (Print):June 1, 1994Publication History Published online1 May 2002Published inissue 1 June 1994https://pubs.acs.org/doi/10.1021/ja00092a072https://doi.org/10.1021/ja00092a072research-articleACS PublicationsRequest reuse permissionsArticle Views292Altmetric-Citations70LEARN 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
Complex formation equilibria of Cu<sup>II</sup>and Zn<sup>II</sup>with triethylenetetramine and its mono- and di-acetyl metabolites (2012)

Triethylenetetramine (TETA) dihydrochloride, or trientine, is a therapeutic molecule that has long been used as a copper-chelating agent for the second-line treatment of patients with Wilson's disease. More recently, it has also been employed as an experimental therapeutic molecule in diabetes where it improves cardiac structure in patients with diabetic cardiomyopathy and left-ventricular hypertrophy. TETA is metabolized by acetylation, which leads to the formation of two main metabolites in humans and other mammals, monoacetyl-TETA (MAT) and diacetyl-TETA (DAT). These metabolites have been identified in the plasma and urine of healthy and diabetic subjects treated with TETA, and could themselves play a role in TETA-mediated copper chelation and restoration of physiological copper regulation in diabetes. In this regard, a potentiometric and spectrophotometric study of Cu(II)-complex formation equilibria of TETA, MAT and DAT is presented here, to provide a comprehensive evaluation of the stoichiometries of the complexes formed and of their relative stability constants. A potentiometric study has also been conducted on the corresponding Zn(II) complexes, to evaluate any possible interference with TETA-mediated Cu(II) binding by this second physiological transition-metal ion, which is present in similar concentrations in human plasma and which also binds to TETA. An ESI-MS study of these systems has both confirmed the complex formation mechanisms established from the potentiometric and spectrophotometric results, and in addition provided direct information on the stoichiometry of the complexes formed in solution. These data when taken together show that the 1 : 1 complexes formed with Cu(II) and Zn(II) have different degrees of protonation. The stability of the Cu(II) and Zn(II) complexes with the three ligands, evaluated by the parameters pCu and pZn, decreases with the introduction of the acetyl groups. Nevertheless the stability of Cu(II) complexes with MAT is sufficiently high to enable its participation in copper scavenging from the patient. A speciation study of the behavior of TETA and MAT with Cu(II) in the presence of Zn(II) at peri-physiological plasma concentrations is also presented. While Zn(II) did not hinder copper binding, the possibility is raised that prolonged TETA treatment could possibly alter the homeostatic regulation of this essential metal ion. The lack of reliable literature stability constants concerning the Cu(II) and Zn(II) interaction with the major transport proteins in plasma is also briefly considered.
LODIN: load distribution mechanism in CORBA using interceptor (2002)

The paper suggests a load balancing strategy in a CORBA environment The Interceptor has been used effectively for the purpose. As is well known, CORBA does not provide any load balancing standard. CORBA compatibility has been kept intact by using the interceptor in a non-intrusive manner. The load information in each host is reported to the load analyzer through the event channel whenever the host load is passed up or down within the specified threshold. It reduces the network load that would result with periodical load reporting. Load balancing with reasonable network traffic is the benefit that accrues.
A small plasmid, pCA2.4, from the cyanobacterium Synechocystis sp. strain PCC 6803 encodes a rep protein and replicates by a rolling circle mechanism (1993)

Different cryptic plasmids are widely distributed in many strains of cyanobacteria. A small cryptic plasmid, pCA2.4, from Synechocystis strain PCC 6803 was completely sequenced, and its replication mode was determined. pCA2.4 contained 2,378 bp and encoded a replication (Rep) protein, designated RepA. An analysis of the deduced amino acid sequence revealed that RepA of pCA2.4 has significant homology with Rep proteins of pKYM from Shigella sonnei, a pUB110 plasmid family from gram-positive bacteria, and with a protein corresponding to an open reading frame in a Nostoc plasmid and open reading frame C of Plectonema plasmid pRF1. pKYM and pUB110 family plasmids replicate by a rolling circle mechanism in which a Rep protein nicks the origin of replication to allow the generation of a single-stranded plasmid as a replication intermediate. RepA encoded by pC2.4 was expressed in Escherichia coli cells harboring a vector, pCRP336, containing the entire repA gene. The observed molecular weight of RepA was consistent with the value of 39,200 calculated from its deduced amino acid sequence, as was the N-terminal sequence analysis done through the 12th residue. Single-stranded plasmid DNA of pCA2.4 that was specifically degraded by S1 nuclease was detected in Synechocystis cells by Southern hybridization. These observations suggest that pCA2.4 replicates by a rolling circle mechanism in Synechocystis cells.
Construction of the endoplasmic reticulum. (1989)

To study the construction of the ER, we used the microtubule-disrupting drug nocodazole to induce the complete breakdown of ER structure in living cells followed by recovery in drug-free medium, which regenerates the ER network within 15 min. Using the fluorescent dye 3,3'-dihexyloxacarbocyanine iodide to visualize the ER, we have directly observed the network construction process in living cells. In these experiments, the ER network was constructed through an iterative process of extension, branching, and intersection of new ER tubules driven by the ER motility previously described as tubule branching. We have tested the cytoskeletal requirements of this process. We find that newly formed ER tubules are aligned with single microtubules but not actin fibers or vimentin intermediate filaments. Microtubule polymerization preceded the extension of ER tubules and, in experiments with a variety of different drugs, appeared to be a necessary condition for the ER network formation. Furthermore, perturbations of the pattern of microtubule polymerization with microtubule-specific drugs caused exactly correlated perturbations of the pattern of ER construction. Induction of abnormally short, nonintersecting microtubules with 20 microM taxol prevented the ER network formation; ER tubules only extended along the few microtubules contacting the aggregated ER membranes. This requirement for a continuous network of intersecting microtubules indicates that ER network formation takes place through the branching and movement of ER membranes along microtubules. Cytochalasin B had no apparent effect on the construction of the ER network during recovery, despite apparently complete disruption of actin fibers as stained by phalloidin. Blockage of protein synthesis and disorganization of intermediate filaments with cycloheximide pretreatment also failed to perturb ER construction.
Electrophoretic deposition of YSZ electrolyte coatings for SOFCs (2007)

The main purpose of this study was to create crack-free, thin-film electrolyte coatings for solid oxide fuel cells (SOFCs) at low cost. The electrophoretic deposition (EPD) technique was employed to prepare dense yttria-stabilized zirconia (YSZ) thin films on stainless steel and porous strontium-doped lanthanum manganite (LSM) substrates. The LSM substrates were produced by slurry casting and subsequent sintering. The suspensions of YSZ were prepared in pure acetylacetone, ethanol, and in mixtures of the two. The deposition experiments were performed with the YSZ suspensions in different solvents to examine the effects of the solvent on the EPD behavior. The effects of current density and powder concentration on the EPD rate were also studied. The deposited films were dried at room temperature and then sintered at high temperatures. The microstructures of the sintered coatings were observed with scanning electron microscopy. By using a partially sintered LSM substrate and an optimized set of deposition conditions, dense and continuous YSZ thin-film coatings with thicknesses less than 10 μm were achieved.
A Modern Helium Cadmium Laser - The Evolution Of A Design (1987)

The development of HeCd (helium cadmium) lasers with wavelengths at 442nm and 325nm is reviewed from the earliest commercial versions to the most recent developments. Particular emphasis is placed on design features introduced by LiCONiX, a developer and supplier of HeCd lasers for fifteen years. The early problems of short lifetime, power instabilities and high noise are discussed and the preferred solutions described in some detail. The emphasis is historical and leads to the design goals and the implementation thereof in the most recent HeCd laser, the LiCONiX model 4300. Although the detailed physics of the discharge is avoided, stress is placed on the multiparameter dependence of key operating specifications and useful advice for system designers is included. Some key applications are mentioned and the trend of future development of this unique laser indicated.