403 research outputs found
Rekentechnische vergelijking WAB-GAB ontwerpgrafiek voor Projectbureau Zeeweringen
No full textProjectbureau Zeeweringen (PBZ) heeft gevraagd om een eenvoudige methode waarmee een correctie kan worden toegepast op de ontwerpgrafiek [1] van waterbouwasfaltbeton (WAB, VTV 2004), indien in plaats van WAB het mengsel grindasfaltbeton (GAB) wordt toegepast. Nagegaan dient te worden welke sterkte en stijfheid van GAB mag worden verwacht en hoe deze zich verhoudt ten opzichte van de sterkte en stijflieid van WAB waarmee de ontwerpgrafiek is opgesteld. Voor PBZ zal ook nog worden nagegaan of het gebruik van GAB met 50% asfaltgranulaat de resultaten kan beïnvloeden. Dit is het maximum toegestane percentage asfaltgranulaat dat volgens de RAW [8] mag worden toegepast in waterbouwasfaltbeton. Daarbij zal de volgende informatie worden gebruikt: \u95 Voor een werkweg op Terschelling is de vergelijking gemaakt met BANDS-PC tussen de vermoeiingssterkte van WAB en GAB [2]. \u95 CROW informatie over de vermoeiingsterkte en stijflieid van GAB met 50% asfaltgranulaat [3 ]. \u95 DWW rapporten over sterkte en stijflieid van STAB en GAB met en zonder asfaltgranulaat \u95 Met het Belgische programma PRADO [4] is het wellicht mogelijk een vergelijking te maken tussen mengsels met steenslag en grind en een zeker percentage asfaltgranulaat.Zeeweringen (PBZ
Quantitative analysis of methyl parathion pesticides in a polydimethylsiloxane microfluidic channel using confocal surface-enhanced Raman spectroscopy
No full textA fast and ultra-sensitive trace analysis of methyl parathion pesticides in a polydimethylsiloxane (PDMS) microfluidic channel was investigated using confocal surface-enhanced Raman spectroscopy (SERS). A three-dimensional PDMS-based passive micromixer was fabricated for this purpose. This PDMS micromixer showed a high mixing efficiency because a strong chaotic advection was developed by the simultaneous vertical and transverse dispersion of the confluent streams. The confocal SERS signal was measured after methyl parathion pesticides were effectively adsorbed onto silver nanoparticles while flowing along the upper and lower alligator-teeth-shaped PDMS channel. A quantitative analysis of the methyl parathion pesticides was performed based on the measured peak height at 1246 cm(-1). Our method has a detection limit of 0.1 ppm. This value satisfies the requirement recommended by the Collaborative International Pesticides Analytical Council (CIPAC) for the determination of methyl parathion in pesticide formulations. This study demonstrates the feasibility of using confocal SERS for the highly sensitive detection of methyl parathion pesticides in a PDMS microfluidic channel
1915 Armenian Van Revolt According To The Lev Nikolayevich Tolstoy’s (Famous Russian Author) Daughter Alexsandra Lvovna Tolstaya’s Memories
Get PDFIn this article, it was evaluated the impressions and the information given about Armenian rebellion at Van according to the Alexsandra Lvovna Tolstaya’s Memories (Daughter of the famous Russian author Lev Nikolayevich Tolstoy) Where she came the last week of June in1915
Electrical glow discharges and plasma parameter of planar sputtering system for silver target
Get PDFDC planar sputtering system is characterized by varying discharge potential of (250-2000 volt) and Argon gas pressures of (3.5×10-2 – 1.5) mbar. The breakdown voltage for silver electrode was studied with a uniform electric field at different discharge distances, as well as plasma parameters. The breakdown voltage is a product of the Argon gas pressure inside the chamber and gab distance between the electrodes, represent as Paschen curve. The Current-voltage characteristics curves indicate that the electrical discharge plasma is working in the abnormal glow region. Plasma parameters were found from the current-voltage characteristics of a single probe positioned at the inter-cathode space. Typical values of the electron temperature and the electron density are in the range of (2.93 –5.3) eV and (10-16 -10-17) m-3 respectively
Metal Bioaccumulation and Biochemical Responses in Loggerhead Turtles (Caretta caretta) from the Gulf of Gabès (Tunisia)
No full textCaretta caretta (Cheloniidae, Cryptodira) is a species of turtle considered a ‘flagship species’ in the Mediterranean Sea. Unfortunately, the circular marine currents and semi-enclosed configuration of the Mediterranean Sea encourage the accumulation of pollutants (metals, pesticides, etc.) emitted by human activities. Tunisia suffers particularly from coastal urbanisation and industrial development. Metal concentrations (Ag, Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) were measured in distinct tissues (heart, kidney, liver, lung, muscle) of loggerhead turtles stranded in the Gulf of Gabès (Tunisia) to estimate the pollution levels in this emblematic species. High concentrations of arsenic and cadmium were found in marine turtles. Therefore, the differential accumulation of metals was measured in the tissues. For example, the liver appears to be a preferential organ for the accumulation of copper, iron, silver and zinc. In contrast, cobalt and cadmium were more concentrated in the kidneys, while arsenic, chromium and nickel were mainly found in the muscles. Antioxidant enzyme responses (catalase, GPx and SOD) and lipid peroxidation were more expressed in the liver and kidneys than in the muscles
Ian Macdougall tries to create something where there is involvement by the audience
No full textCanberra schoolteacher and author of several musical plays, MacDougall worked on a series of 'ballad operas' during his tenure as Music Board Fellow at the Australian National University in 1974
Annealing effects on opto-electronic properties of Ag₂O films growth using thermal evaporation techniques
No full textLink to publisher's homepage at http://ijneam.unimap.edu.my/High quality transparent conductive silver oxide (Ag₂O) nanocrystals thin films were prepared successfully using thermal evaporation method using pure Ag metal, followed by Oxidation process under two different oxidation temperature. Optical properties show high transparency of about 70% and decrease to 55 % at lower oxidation temperature . Optical band gab of prepared film at optimum condition is about 2.88 and 2.92 eV. Surface morphology measured using AFM give a triangle like structure with average roughness of (2.65 nm). The X-ray diffraction insures the formation of polycrystalline silver oxide nanostructure thin film
Annealing Effects on Opto-electronic Properties of Ag2O Films growth using Thermal Evaporation Techniques
No full textHigh quality transparent conductive silver oxide (Ag2O) nanocrystals thin films were
prepared successfully using thermal evaporation method using pure Ag metal, followed by
Oxidation process under two different oxidation temperature. Optical properties show high
transparency of about 70% and decrease to 55 % at lower oxidation temperature . Optical
band gab of prepared film at optimum condition is about 2.88 and 2.92 eV. Surface
morphology measured using AFM give a triangle like structure with average roughness of
(2.65 nm). The X-ray diffraction insures the formation of polycrystalline silver oxide
nanostructure thin film
The Transmission of Japanese Financial Shocks: Evidence from International Bank Claims on East Asian Economies
No full textSince Japanese banks have been the major creditors in Asia, Japan has been a notable source of regional macroeconomic fluctuations. This study explores the patterns of Japanese bank claims in East Asian economies, focusing on the transmission effects of Japanese financial shock via international bank claims. The author finds that international lending by Japanese banks differed substantially from that of other major lenders. The study also suggests that the banking shocks captured by the Japanese stock market decline and nonperforming loans were transmitted throughout other East Asian economies via lending activity by Japanese banks. This association was found to be statistically significant.East Asia, financial shock, international bank lending, Japanese banking crisis, transmission effect,
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