gebhart/patrepeval huggingface dataset:
Crosslinking and mechanical property of liquid rubber. III. Curative effect of aralkyl and alicyclic diols (1979)

This is the third report on the relationship between the properties and the structure of polyurethane elastomers derived from hydroxyl-terminated liquid polybutadiene (HT-BD). The curative effect of low molecular weight diols was investigated. Previously it was found that the use of aromatic diols presented a processing problem because of its high melting point. To solve this problem, the use of aralkyl diols and alicyclic diols was examined in this paper. The processability was significantly improved by the use of these diols, and the elastomers obtained retained considerably high mechanical properties.
Computerized obstacle avoidance systems for the blind and visually impaired (2000)

This chapter gives an overview of existing devices for the guidance of visually impaired pedestrians and discusses the properties of the white cane and of conventional electronic travel aids. Also described are the disadvantages of using a standard mobile robot for this purpose. Next follows a description of the NavBelt, a computerized travel aid for the blind that is based on advanced mobile robot obstacle avoidance technology. The NavBelt is worn by the user like a belt and, via a set of stereo earphones, provides acoustic signals that guide the user around obstacles. One limitation of the NavBelt is that it is exceedingly difficult for the user to comprehend the guidance signals in time to allow fast walking. This problem is effectively overcome by a newer device, called GuideCane. The GuideCane uses the same mobile robotics technology as the NavBelt but it is a wheeled device pushed ahead of the user via an attached cane. When the GuideCane detects an obstacle it steers around it. The user immediately feels this steering action and can follow the GuideCane&apos;s new path easily and without any conscious effort. This chapter describes the GuideCane system, including the mechanical, electronic, and software components, followed by a description of the intuitive user-machine interface. The chapter ends with a discussion of the GuideCane&apos;s novel information transfer approach and its advantages and disadvantages in practical term. 1
Antimicrobial Electrospun Biopolymer Nanofiber Mats Functionalized with Graphene Oxide–Silver Nanocomposites (2015)

Functionalization of electrospun mats with antimicrobial nanomaterials is an attractive strategy to develop polymer coating materials to prevent bacterial colonization on surfaces. In this study we demonstrated a feasible approach to produce antimicrobial electrospun mats through a postfabrication binding of graphene-based nanocomposites to the nanofibers' surface. A mixture of poly(lactide-co-glycolide) (PLGA) and chitosan was electrospun to yield cylindrical and narrow-diameter (356 nm) polymeric fibers. To achieve a robust antimicrobial property, the PLGA-chitosan mats were functionalized with graphene oxide decorated with silver nanoparticles (GO-Ag) via a chemical reaction between the carboxyl groups of graphene and the primary amine functional groups on the PLGA-chitosan fibers using 3-(dimethylamino)propyl-N'-ethylcarbodiimide hydrochloride and N-hydroxysuccinimide as cross-linking agents. The attachment of GO-Ag sheets to the surface of PLGA-chitosan fibers was successfully revealed by scanning and transmission electron images. Upon direct contact with bacterial cells, the PLGA-chitosan mats functionalized with GO-Ag nanocomposites were able to effectively inactivate both Gram-negative (Escherichia coli and Pseudomonas aeruginosa) and Gram-positive (Staphylococcus aureus) bacteria. Our results suggest that covalent binding of GO-Ag nanocomposites to the surface of PLGA-chitosan mats opens up new opportunities for the production of cost-effective, scalable, and biodegradable coating materials with the ability to hinder microbial proliferation on solid surfaces.
Surface Changes on Acetylation and Exposure to Ultraviolet Radiation of <i>Pinus radiata </i>Using X-Ray Photo-Electron Spectroscopy (1996)

Article Surface Changes on Acetylation and Exposure to Ultraviolet Radiation of Pinus radiata Using X-Ray Photo-Electron Spectroscopy was published on January 1, 1996 in the journal Holzforschung (volume 50, issue 5).
Two monoclonal antibodies raised against a Burkitt lymphoma cell line recognise different cell types within lymphoid follicles. (1985)

Monoclonal antibodies were raised against a laboratory derived variant of the Raji Burkitt lymphoma cell line. We have characterized two of these antibodies by screening on haematopoietic cell lines, and frozen sections of both reactive and neoplastic lymphoid tissue, and found reactivity with separate cellular components of lymphoid follicles. Monoclonal FW37.4.D5 reacts in section specifically with follicular dendritic reticular cells. Monoclonal 35.1C5 reacts with a subpopulation of splenic marginal zone, and lymph node mantle zone, B lymphocytes, but stains only rare cells within germinal centres. This monoclonal is operationally B lymphocyte specific, distinguishing an 'intermediate' B cell subset, represented in lymphoma by B chronic lymphocytic leukaemia, B hairy cell leukaemia and centrocytic lymphoma.
Eradication of the Oriental Fruit Fly1 from the Mariana Islands by the Methods of Male Annihilation and Sterile Insect Release3 (1970)

Sterile oriental fruit flies,Dacus dorsalis Hendel, emerging on Guam from 36 million irradiated pupae placed at the loci of infestations established with traps baited with methyl eugenol eradicated the abnonnally small population present after host crops were destroyed by typhoons Karen in 1962 and Olive in 1963. The several reintroductions that occurred in 1964 and 1965 before effective quarantines were established were eradicated by the same method before September 1965. Similar releases on Saipan and Tinian were not successful; too many flies died before reaching sexual maturity, perhaps because sufficient natural food was lacking near the emergence sites (honeydew-producing insects were suppressed by the typhoons) and because of damage by overheating during movement from Guam to field cages on Saipan. Eradication was finally achieved on these islands in 1965 by distributing fiberboard squares impregnated with methyl eugenol and naled every 2-week period for 41/2 months (method of male annihilation). The Mariana Islands, which have been infested with the oriental fruit fly for at least 35 years, have now been free of the species for more than 4 years.
EFFECT OF SPRAY MIXTURE ON DROPLET SIZE (1990)

ABSTRACT spray droplet size is a major concern to herbicide applicators because: 1) most post-emergence herbicides must be applied uniformly and give complete coverage of target plants for greatest efficacy; and 2) spray drift to non-target areas must be minimized. The effects of rice herbicide formulations, concentrations, and tank mixtures; surfactants; polymers; and spray nozzle orientation in an airstream was determined in relation to the size of spray droplets produced by hollow cone nozzles. Several droplet-size statistics were significantly affected by herbicide formulations, tank mixtures, and polymer concentrations. Increasing the concentration of herbicide in the spray mixture or changing the nozzle orientation from 0 to 45 with respect to the airstream affected droplet size less than mixture type or polymer concentration.
Plasminogen activating enzyme in cultured glioblastoma cells. An immunofluorescence study with monoclonal antibody. (1982)

A monoclonal antibody against a 52,000 dalton human plasminogen activating enzyme (HPA52) was used for immunofluorescence staining of cultured glioblastoma cells. The fluorescence was located in the cytoplasm of the cells. A pronounced variation in the staining intensity was observed between the individual cells. The specificity of the fluorescent stain was supported by the findings that 1) no staining was obtained with a monoclonal antibody of the same subclass, but with irrelevant specificity (anti-2,4,6-trinitrophenyl); 2) adsorption with HPA52 purified to homogeneity removed the ability of anti-HPA52 to mediate staining; 3) the glioblastoma cells contained HPA52, as measured by enzymatic assay, while melanoma cells that were not stained did not contain HPA52 activity; 4) dexamethasone reduced both the enzymatically determined HPA52 content and the immunofluorescence in parallel, while progesterone affected none of these parameters; 5) we have previously found that culture fluid conditioned by the glioblastoma cells apart from HPA52 does not contain detectable amounts of any protein that binds to anti-HPA52. Several advantages of immunohistochemical detection of plasminogen activators compared with enzyme histochemical methods are discussed, among these that the immunohistochemical method distinguishes between plasminogen activators of different types.
Dynamic programming methods for designing FIR filters using coefficients -1,0 and +1 (1986)

In this paper, we describe an efficient design procedure for designing FIR filters whose general structure consists of a transversal filter with tap coefficients restricted to -1, 0, or + 1 and cascaded with simple recursive sections. Due to the multiplication-free nature of this transversal filter, the configuration is particularly attractive from the standpoint of implementation with very simple hardware. Dynamic programming methods in conjunction with a mean-square error functional are presented to select the set of coefficient values for the taps. The approach is based on the assumption that the approximation sequence can be described as the output of a sequential machine whose state corresponds to the state-space representation of the sections in cascade with the transveral filter.
Tiam1-IRSp53 Complex Formation Directs Specificity of Rac-Mediated Actin Cytoskeleton Regulation (2005)

The exchange factor Tiam1 regulates multiple cellular functions by activating the Rac GTPase. Active Rac has various effects in cells, including alteration of actin cytoskeleton and gene expression, via binding to and modulating the activity of diverse effector proteins. How individual Rac effectors are selected for activation and regulated in response to upstream signals is not well understood. We find that Tiam1 contributes to both of these processes by binding to IRSp53, an adaptor protein that is an effector for both Rac and Cdc42. Tiam1 directs IRSp53 to Rac signaling by enhancing IRSp53 binding to both active Rac and the WAVE2 scaffold. Moreover, Tiam1 promotes IRSp53 localization to Rac-induced lamellipodia rather than Cdc42-induced filopodia. Finally, IRSp53 depletion from cells prevents Tiam1-dependent lamellipodia induced by Tiam1 overexpression or platelet-derived growth factor stimulation. These findings indicate that Tiam1 not only activates Rac but also contributes to Rac signaling specificity through binding to IRSp53.
Tempest in a Teapot: Compromising Reflections Revisited (2009)

Reflecting objects such as tea pots and glasses, but also diffusely reflecting objects such as a user's shirt, can be used to spy on confidential data displayed on a monitor. First, we show how reflections in the user's eye can be exploited for spying on confidential data. Second, we investigate to what extent monitor images can be reconstructed from the diffuse reflections on a wall or the user's clothes, and provide information-theoretic bounds limiting this type of attack. Third, we evaluate the effectiveness of several countermeasures. This substantially improves previous work (Backes et al., IEEE Symposium on Security & Privacy, 2008).
Efficacy and safety of once-daily darunavir/ritonavir versus lopinavir/ritonavir in treatment-naive HIV-1-infected patients at week 48 (2008)

DRV/r 800/100 mg qd was non-inferior to LPV/r 800/200 mg at 48 weeks, with a more favorable safety profile. Significantly higher response rates were observed with DRV/r in patients with HIV-1 RNA at least 100 000 copies/ml. DRV/r 800/100 mg offers a new effective and well tolerated once-daily, first-line treatment option for treatment-naive patients.
Nanoscale colloidal particles: Monolayer organization and patterning (1997)

The monolayer deposition of nanoscale colloidal particles (Au citrate sols) was demonstrated by employing an aminofunctional silane [3-(2-Aminoethlyamino) propyltrimethoxysilane] as a coupling agent. The compatibility of this colloidal Au deposition method with conventional electron beam lithography techniques was examined, and the two-dimensional patterning of the Au colloidal monolayer was demonstrated. Using this fabrication method, a proposal for a single electron device structure based on nanoscale (2 nm diameter) gold colloidal particles was made.
Preparation of novel sulfonated block copolyimides for proton conductivity membranes (2005)

In this article novel sulfonated block copolyimides with various diamine compositions and block chain lengths were synthesized by chemical imidization using a two-pot procedure. The proton conductivities of the block copolyimide membranes were measured as functions of the relative humidity and temperature using four-point-probe electrochemical impedance spectroscopy. The proton conductivity of the membranes strongly depended on the block chain lengths and increased with an increase in the block chain lengths. The proton conductivity of NTDA-BDSA-b-6FAP (112/48) as the block copolyimide membrane was approximately 0.35 S cm−1 which indicated a higher value when compared to that determined for Nafion®. Copyright © 2005 John Wiley & Sons, Ltd.
Sodium Carbonates (2000)

Abstract The article contains sections titled: 1. Sodium Carbonate 1.1. Introduction 1.2. Properties 1.3. Sodium Carbonate Minerals 1.4. Production 1.4.1. Ammonia ‐ Soda Process 1.4.1.1. General and Theoretical Principles 1.4.1.2. Technology 1.4.2. Modified Ammonia ‐ Soda Process 1.4.3. Production from Trona and Other Sodium Carbonate‐Containing Minerals 1.4.4. Other Processes 1.4.5. Wastewater Problems in Sodium Carbonate Production 1.5. Quality Specifications 1.6. Producers 1.7. Storage and Transport 1.8. Uses 1.9. Toxicology 1.10. Economic Aspects 2. Sodium Hydrogencarbonate 2.1. Properties 2.2. Production 2.3. Uses and Quality Specifications 3. Acknowledgement
Slack redistribution in pipelined circuits for enhanced soft-error rate reduction (2008)

Soft errors are changes in logic state of a circuit/system resulting from the latching of single-event transients (transient voltage fluctuations at a logic node or SETs) caused by high-energy particle strikes or electrical noise. Due to technology scaling and reduced supply voltages, they are expected to increase by several orders of magnitude in logic circuits. Soft-error rate (SER) reduction can be achieved by using both spatial and temporal redundancy techniques. In this paper, we present a slack redistribution technique, applicable to pipelined circuits, to enhance SER reduction obtainable from time-redundancy based techniques.
Isolation of covalently closed circular deoxyribonucleic acid from Streptomyces coelicolor A3(2) (1975)

Covalently closed circular deoxyribonucleic acid (DNA) was isolated from two strains of Streptomyces coelicolor A3(2), representing two of the known fertility types. In each of the two strains circular DNA of about 20 times 10-6 daltons could be detected, amounting to about 1.5% of the total cellular DNA. The possible function of this DNA is discussed.
Enantiomeric recognition and separation of chiral organic ammonium salts by chiral pyridino-18-crown-6 ligands (1993)

Abstract Optically pure allyloxy and dimethyl-substituted pyridino-18-crown-6 (8) was attached to silica gel by the following reactions. 4-Allyloxy-2,6-pyridinedimethyl ditosylate (23) was first prepared from chelidamic acid. Ditosylate 23 was treated with (S,S)-dimethyl-substituted tetraethylene glycol to form 8. Ligand 8 was treated with triethoxysilane using a platinum catalyst. The resulting chiral crown-substituted triethoxysilane 32 was reacted with silica gel in toluene at 90 C to attach the crown to silica gel. Preliminary results of the separation of [α-(1-naphthyl)ethyl]ammonium perchlorate into its (R) and (S) forms using the bound chiral crown with acetone/methanol (7/3) (v/v) as the eluant are reported. The preparation of chiral dimethyl(allyloxyphenyl)pyridino-18-crown-6 (9) that could be attached to silica gel on the side opposite to the pyridine ring is also reported.
中国光纤通信的开拓者——武汉邮电科学研究院—烽火通信 (2000)

一、世界光纤通信发展的回顾 1966年英藉华人高锟(CharlesK.C,现美藉)发表了一篇题为《光频介质纤维表面波导》(Dielectric-Fiber Surface Waveguide or OpticalFrequencies)的论文,提出可以用石英玻璃纤维(简称光纤)传送光信号来进行通信。
Method for obtaining a nearfield inverse scattering solution to the acoustic wave equation (1981)

Since the classic paper by Gelfand and Levitan [Am. Math. Soc. Transl., Ser. 2, 1, 253–304 (1955)], much has been published on the inverse scattering problem. Assuming no bound states, there are several well-known solutions that reconstruct one-dimensional or spherically symmetric potentials from farfield scattering information. Moses [Phys. Rev. 102, 559–567 (1956)] and Newton [Phys. Rev. Lett. 4, 541 (1979)] have generalized these procedures for three-dimensional potentials. In this paper, we show how the work of Moses and Newton can be extended to provide a nearfield inverse scattering solution to the acoustic wave equation. In particular, we describe a procedure for obtaining a nearfield inverse scattering solution when the incident probes are arbitrary, unknown, and not necessarily reproducible.
Corpora Albicantia and Placental Scars in the Hokkaido Brown Bear (1990)

Toshio Tsubota, Hiroshi Kanagawa, Tsutomu Mano, Toshiki Aoi, Corpora Albicantia and Placental Scars in the Hokkaido Brown Bear, Bears: Their Biology and Management, Vol. 8, A Selection of Papers from the Eighth International Conference on Bear Research and Management, Victoria, British Columbia, Canada, February 1989 (1990), pp. 125-128
The serine protease hepsin mediates urinary secretion and polymerisation of Zona Pellucida domain protein uromodulin (2015)

Uromodulin is the most abundant protein in the urine. It is exclusively produced by renal epithelial cells and it plays key roles in kidney function and disease. Uromodulin mainly exerts its function as an extracellular matrix whose assembly depends on a conserved, specific proteolytic cleavage leading to conformational activation of a Zona Pellucida (ZP) polymerisation domain. Through a comprehensive approach, including extensive characterisation of uromodulin processing in cellular models and in specific knock-out mice, we demonstrate that the membrane-bound serine protease hepsin is the enzyme responsible for the physiological cleavage of uromodulin. Our findings define a key aspect of uromodulin biology and identify the first in vivo substrate of hepsin. The identification of hepsin as the first protease involved in the release of a ZP domain protein is likely relevant for other members of this protein family, including several extracellular proteins, as egg coat proteins and inner ear tectorins.
Excited state proton transfer of ruthenium(II) complexes of 4,7-dihydroxy-1,10-phenanthroline. Increased acidity in the excited state (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExcited state proton transfer of ruthenium(II) complexes of 4,7-dihydroxy-1,10-phenanthroline. Increased acidity in the excited statePaul J. Giordano, C. Randolph Bock, and Mark S. WrightonCite this: J. Am. Chem. Soc. 1978, 100, 22, 6960–6965Publication Date (Print):October 1, 1978Publication History Published online1 May 2002Published inissue 1 October 1978https://pubs.acs.org/doi/10.1021/ja00490a032https://doi.org/10.1021/ja00490a032research-articleACS PublicationsRequest reuse permissionsArticle Views1354Altmetric-Citations125LEARN 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
SPILL PREVENTION AND CONTROL: A SPECIAL REPORT (1976)

Federal spill prevention and control regulations require facilities that store greater than 1,320 gal of oil-type material to maintain clean-up plans at the operation site. Fines will be imposed for illegal spills or discharges (up to $5 million if gross negligence occurs) or if federal authorities are not properly notified. Spill control and clean-up materials are reviewed. They include a sorbent rug, an inflatable boom, an inflatable emergency collecting device, skimmers, oil-water separator pumps and sorbent strips. Procedures for handling spills are discussed, including specified duties of the foreman and production supervisor to correct the spill problem promptly. A serious spill requires extra action, such as notification of police and fire authorities. A spill-prevention plan checklist is included. Plans of two major affected companies are included.
Safety and efficacy of lecithins for all animal species (2016)

Abstract Following a request from the European Commission, the EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of lecithins for all animal species. The additive consists predominantly of lecithins derived from rapeseed, sunflower and soybean, with other plant extracts. Three different forms of the additive are produced: regular liquid lecithins, hydrolysed liquid lecithins and de‐oiled lecithin powder. Lecithins are usually phospholipids, composed of phosphoric acid with choline (or ethanolamine, inositol, serine or hydrogen, in phosphatidic acid), glycerol and one or two fatty acids. Lecithins are safe for all target species. Setting a maximum content for lecithins is not considered necessary. The use of lecithins in animal nutrition does not pose any risk to the consumer. Lecithins are not irritant to the skin and eyes, not skin sensitisers and not harmful by inhalation. No risk for the environment is expected from the use of lecithins in animal nutrition. Lecithins are considered efficacious as emulsifiers at the recommended use levels.