Case hardening is a feature of dried wood that causes the wood to deform (cup) after re-sawing and equalising the moisture content. VTT has analysed case hardening with the aid of the simulation model PEO and with experimental drying, conditioning and storage tests. Case hardening cannot be predicted by the moisture content gradient alone. However, the case hardening gap after drying to a high ...

The objective of this work was to evaluate the effect impregnation process pine wood (Pinus sylvestris L.) on roughness parameters surface processed a frame sawing. samples were dried and impregnated using commercial procedure by local company. touch method with use measuring stylus (pin) employed determine considering parameters, namely, arithmetical mean value (Ra), total height profile (Rt),...

The majority of solar cells produced today are made with crystalline silicon wafers, which are typically manufactured by growing a large piece of silicon and then sawing it into ~200 pm wafers, a process which converts one-half of the high-purity silicon into waste sawdust. To bypass the sawing process, a new method for making high-quality multicrystalline wafers without sawing is under develop...

The mission of the National Concrete Pavement Technology Center is to unite key transportation stakeholders around the central goal of advancing concrete pavement technology through research, tech transfer, and technology implementation. The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. The opini...