Fe-based amorphous/nanocrystalline coatings were prepared on the AISI 321 steel substrate by the high-velocity oxygen-fuel (HVOF) thermal spraying technology. The effect of selected parameters (oxygen flow, kerosene flow and spray distance) on the cavitation erosion resistance (denoted as Rc) of the coating were investigated by using the Taguchi method. Statistical tools such as design of exper...

Directed fusion of transmitter-laden vesicles enables rapid intercellular signaling in the central nervous system and occurs at synapses within gray matter. Here we show that action potentials also induce the release of glutamate from axons in the corpus callosum, a white matter region responsible for interhemispheric communication. Callosal axons release glutamate by vesicular fusion, which in...

The strength of sheathed wall systems is substantially greater than unsheathed walls with the same studs. Testing on studs sheathed on both sides with dry gypsum board demonstrate strength increases as large as 70% over unsheathed studs (Miller and Peköz 1993, Miller and Peköz 1994). The current AISI Specification for sheathed wall stud systems are complicated, only apply when the sheathing is ...

National curricula need to change drastically to comply with the competences needed for the 21 century. In this paper eight frameworks describing 21 century competences were analysed. A comprehensive search for information about 21 century competences was conducted across the official websites of the selected frameworks, resulting in 32 documents that were analysed in detail. Travers and Westbu...

Giriş: Hafif astım, persistan rinit ve astım-rinit birlikteliği olan hastalarda ekshale soluk havasında malondialdehid ve total protein düzeyleri incelenerek alt hava yolu inflamasyonu değerlendirilmiştir. Hastalar ve Metod: Hafif astım, en az bir yıldır semptomatik olan persistan rinitli hastalar ve sağlıklı bireyler çalışmaya dahil edildi. Astımlı ve rinitli hastalar yeni tanı almış olup, kor...

Heat transfer across pressed joint is significantly governed by thermal contact conductance which in turn depends on thermophysical properties of materials contact, surface properties, pressure, working temperature and interstitials present at the interface. Application an effective technique to control ambient temperature. In study, joints cryogenic presence like silicon based conductive compo...

In this research work, investigations are carried out on Continuous Wave (CW) Nd:YAG laser welding system after preliminary experimentation to understand the influencing parameters associated with laser welding of AISI 304. The experimental procedure involves a series of laser welding trials on AISI 304 stainless steel sheets with various combinations of process parameters like beam power, beam...

We performed a logistic regression analysis to evaluate the predictive value of ultrasonongraphy-detectable features of cervical lymph nodes in patients with nasopharyngeal carcinoma. The goal of this analysis was to determine whether certain ultrasound features were useful for accurate differential diagnosis of cervical lymph nodes metastasis with underlying nasopharyngeal carcinoma. In this i...

The increased incidence of allergic disease seems to rely on many factors. Among them, the association between genetic variations of the immune response and environmental pressure by allergens, infectious agents and pollutants should be taken into consideration. In alternative to conventional treatments with corticosteroids and antihistaminics, nutraceuticals have been shown to act on allergic ...