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Comparative study on the corrosion behavior of X52, 3Cr, and 13Cr steel in an O2–H2O–CO2 system: products, reaction kinetics, and pitting sensitivity

The corrosion behaviors of X52, 3Cr low-alloy steel, and 13Cr stainless steel were investigated in an O2–H2O–CO2 environment at various temperatures and O2–CO2 partial-pressure ratios. The results showed that the corrosion rates of X52, 3Cr, and 13Cr steels increased with increasing temperature. The corrosion rates slowly increased at temperatures less than 100°C and increased ...

Effects of Long-Term Exposure to Traffic-Related Air Pollution on Lung Function in Children

Lung function in early life has been shown to be an important predictor for peak lung function in adults and later decline. Reduced lung function per se is associated with increased morbidity and mortality. With this review, we aim to summarize the current epidemiological evidence on the effect of traffic-related air pollution on lung function in children and adolescents. We focus ...

Investigation of rheo-diecasting mold filling of semi-solid A380 aluminum alloy slurry

The rheo-diecasting mold filling capacity and the microstructure of the semi-solid A380 aluminum alloy slurry were investigated. The results show that the mold filling capacity was strengthened with increasing pouring temperature or increasing injection pressure. Under certain process parameters, the mold cavity was fully filled. However, the mold filling capacity decreased with ...

The burden of headache disorders in Ethiopia: national estimates from a population-based door-to-door survey

Background Headache disorders are the third-highest cause of disability worldwide, with migraine and medication-overuse headache (MOH) the major contributors. In Ethiopia we have shown these disorders to be highly prevalent: migraine 17.7%, TTH 20.6%, probable MOH (pMOH) 0.7%, any headache yesterday (HY) 6.4%. To inform local health policy, we now estimate disability and other ...

08SG2/OsBAK1 regulates grain size and number, and functions differently in Indica and Japonica backgrounds in rice

Background Both grain size and grain number are significant for rice yield. In the past decade, a number of genes related to grain size and grain number have been documented, however, the regulatory mechanisms underlying them remains ambiguous. Results We identified a rice small grain (sg2) mutant in an EMS mutant library generated from an indica variety, Shuhui498. Using the ...

Etching characteristics of Si{110} in 20 wt% KOH with addition of hydroxylamine for the fabrication of bulk micromachined MEMS

Anisotropic wet etching is a most widely employed for the fabrication of MEMS/NEMS structures using silicon bulk micromachining. The use of Si{110} in MEMS is inevitable when a microstructure with vertical sidewall is to be fabricated using wet anisotropic etching. In most commonly employed etchants (i.e. TMAH and KOH), potassium hydroxide (KOH) exhibits higher etch rate and ...

Chemical composition analysis of the essential oil of Mentha piperita L. from Kermanshah, Iran by hydrodistillation and HS/SPME methods

Background The volatile constituents from the aerial parts of Mentha piperita L. (peppermint) which were collected from cultivate growing plants in Kermanshah (Garreban; at the east of Kermanshah City) of Iran were extracted by hydrodistillation and headspace/solid-phase micro-extraction (HS/SPME) methods and were analyzed by gas chromatography (GC) and gas chromatography/mass ...

Microbial profile of common spices and spice blends used in Tamale, Ghana

Background The main purpose of using spice to grill meat is to add aroma, colour, flavour, taste and pungency. However, the purpose is sometime befitted when spice is contaminated with pathogenic bacteria that result in foodborne illnesses and toxicological effect. Results The study was necessitated by paucity information on handling practices and microbial load common spices used ...

Complexe bekkenfractuur sneller hersteld dankzij 3D

In het umcg is voor het eerst een patiënt met een ingewikkelde bekkenbreuk geopereerd met voor de patiënt op maat gemaakte titaniumplaten en boormallen. Die platen en mallen zijn ontworpen op basis van virtuele 3D-modellen van het gebroken bekken. Toch is dit niet het meest innovatieve aspect van de operatie. Dat is de tijd.

Zoektocht naar topadvocaten

Zorgvisie organiseerde in 2015 haar eerste verkiezing voor de beste advocaten in de gezondheidszorg. Dat leverde een eerbiedwaardig rijtje ‘toppers’ op. Wie zal er dit jaar bovenaan staan?

Impact of power system network topology errors on real-time locational marginal price

This paper examines the impact of power transmission network topology change on locational marginal price (LMP) in real-time power markets. We consider the case where the false status of circuit breakers (CBs) that bypass topology error processing can generate an incorrect power system network topology, subsequently distorting the results of the state estimation and economic ...

A fascia lata free flap in pelvic exenteration for Fournier gangrene due to advanced rectal cancer: a case report

Background Fournier gangrene due to advanced rectal cancer is a rapidly progressive gangrene of the perineum and buttocks. Emergency surgical debridement of necrotic tissue is crucial, and secondary surgery to resect tumors is necessary for wound healing. However, pelvic exenteration damages the pelvic floor, increasing the likelihood of herniation of internal organs into the ...