A method was developed for freeze-dry stabilization of poliovirus type 3. An ultrafiltration procedure was used to remove salts from infected tissue culture fluid, and the virus was freeze-dried after suspension in an alkaline organic buffer. This method was further tested with other picornaviruses including poliovirus types 1 and 2, coxsackieviruses A9, A20, B2, and B5, echovirus 11, and the e...

Abstract: structures in alloys. This method is based on pouring the melt through a small sized nozzle into a mould located at acertain height under the crucible. This simple method generates globular structures without using equipments such asimpellers, electromagnetic stirrers, ultrasonic probes and cooling slopes. Therefore it is cost effective. In the presentstudy, the effect of casting size...

Chemical looping water splitting systems operate at relatively high temperatures (450–800 °C) to produce, purify, or store hydrogen by the cyclic reduction and oxidation (redox) of a solid oxygen carrier. Therefore, improve long-term operation, it is necessary develop highly stable carriers with large specific surface areas. In this work, interconnected doped Fe2O3 foams are fabricated through ...

Numerical programs usually include type-casting instructions which convert data among different types. Identifying unsafe type-casting is important for preventing undefined program behaviors which cause serious problems such as security vulnerabilities and result non-reproducibility. While many tools had been proposed for handling sequential programs, to our best knowledge, there isn’t a tool g...

This paper presents a novel method to accelerate volume ray casting as used in virtual colonoscopy. The method exploits a pre-processing visibility technique to identify the potentially visible portions of the colon. Then it applies a space leaping technique based on the projection of the visible boundary voxels of the colon onto the image plane. The method has been tested using a synthetic dat...

Currently, approximately 70-80 % of casting production of ferrous alloys is done with sands containing bentonite (green sands). Information on an amount of active bentonite in moulding sands, after shakeout of casting, is necessary in the rebounding process of bentonite sands – under real casting house conditions. It decides how much of fresh bentonite should be added to moulding sands, thereby...

S. Rzadkosz, J. Zych, A. Garbacz-Klempka, J. Kozana, M. Piękoś, J. Kolczyk, Ł. Jamrozowicz, AGH University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland M. Kranc, Foundry Research Institute, Krakow, Poland T. Stolarczyk, Copper Museum in Legnica, Poland This paper presents research results in the field of casting technology of copper and copper alloys using the inves...

Traction followed by spica casting, the one method used to treat femoral shaft fractures in children that was used in the past, has given way to a multiplicity of methods today. To evaluate the morbidity and costs of these various methods, 85 fractures in 81 patients age six to 16 years were evaluated. Early spica casting gave excellent results with low complications and low costs. All surgical...

Pouring temperature also affects the mechanical properties of aluminium. High pouring will make aluminium grains become large and a lot gas be trapped into liquid metal when is poured mould. The right prevent porosity does not freeze before filling entire moulds cavity. casting process used permanent Temperature was 150 °C pressure 0.35 atm (absolute pressure). were 750, 800 850 °C. increasing ...