Utan att Ni därom anhållit ber jag härmed få meddela att jag denna vår med den från Eder affär köpta "Cleveland" automobilen av sportmodell företagit min första längre färd

11 x 14 cm

Nova - prova en Essex eller Hudson innan Ni bestämmer Eder för bilköp!

kuv., 14 x 8 cm

Tänker Ni sälja Eder bil?

kuv., 22 x 35 cm

Är Ni ägare till en lastbil?

kuv., 14 x 23 cm

Vad Ni bör veta om den nya Ford

kuv., 15 x 21 cm

Ääniä kuilun partaalta

Teema: Opetuksen maantiede - Nuorten maantiede.

Treatment of NI-containing acidic mine waters with calcite side-stones

Acid mine drainage (AMD) presents a serious problem for the environment for the massive formation of acidic leachates containing heavy metals. The present work deals with the AMD treatment using neutralizing limestone side-products. The conventional methods for prevention, mitigating and control of AMD formation are described. The experimental testing of Nordkalk Oy calcite-containing side-stones for acid neutralizing and removal of nickel from solutions presents the research objective. The batch experiments in acid neutralizing with subsequent metal content analysis were carried out. The results showed the dependence of pH on the dose of neutralizing material and the exposure time. The nickel removal, unlike iron, within the pH range from 1.2 to 6.0 appeared to be inadequate. The further research on nickel co-precipitation with iron and aluminium may appear to be necessary together with testing of alkalinity strengthening materials.

Minun IFLA:ni

Kansalliskirjastolaiset kertovat omista IFLA-kokemuksistaan.

Comparison between dSPACE and NI systems based on real-time intelligent control of a teleoperated hydraulic servo system

The Laboratory of Intelligent Machine researches and develops energy-efficient power transmissions and automation for mobile construction machines and industrial processes. The laboratory's particular areas of expertise include mechatronic machine design using virtual technologies and simulators and demanding industrial robotics. The laboratory has collaborated extensively with industrial actors and it has participated in significant international research projects, particularly in the field of robotics. For years, dSPACE tools were the lonely hardware which was used in the lab to develop different control algorithms in real-time. dSPACE's hardware systems are in widespread use in the automotive industry and are also employed in drives, aerospace, and industrial automation. But new competitors are developing new sophisticated systems and their features convinced the laboratory to test new products. One of these competitors is National Instrument (NI). In order to get to know the specifications and capabilities of NI tools, an agreement was made to test a NI evolutionary system. This system is used to control a 1-D hydraulic slider. The objective of this research project is to develop a control scheme for the teleoperation of a hydraulically driven manipulator, and to implement a control algorithm between human and machine interaction, and machine and task environment interaction both on NI and dSPACE systems simultaneously and to compare the results.