Pöyry is a global consulting and engineering firm focusing on the energy, forest industry and infrastructure and environment sectors. It focuses on power generation, transmission and distribution, forest industry, chemicals and biorefining, mining and metals, transportation, water and real estate sectors. It changed its name from Jaakko Pöyry Group in 2006. The company is listed on the Helsinki Stock Exchange and is headquartered in Vantaa, Finland.The company was founded by Jaakko Pöyry who spearheaded its growth from a small engineering office to a global corporation in his special field of interest, the forest products industry.In 2012, Pöyry was hired as a consultant on the controversial Xayaburi Dam on the Mekong River in Laos. Wikipedia.
Noise Control Engineering Journal | Year: 2011
The noise measurement case presented in this work took place inAugust 2007 in a small community located on the Finnish west coast, where an 1Ã1 MW pitch regulated variable speed wind turbine caused many complaints from the nearby holiday residents after its initial start-up in 2006. New specific receiver testing procedures were introduced prior to the test for performing just one overnight measurement under desired weather conditions. The goal was to test the sound power level and outdoor far field sound pressure levels at receiver point, including the verification of narrow band and impulsive sounds, during the night time and downwind conditions. © 2011 Institute of Noise Control Engineering.
Geotextiles and Geomembranes | Year: 2014
The right wing embankment of the headrace channel of a hydropower plant, failed adjacent to the concrete intake structure. The failure also caused damages of the penstocks and flooding of the powerhouse. The root-cause analysis showed that water from the reservoir entered, through an open joint in the adjacent concrete structure, the geomembrane lined homogeneous embankment dam fill. This seepage water had eroded dam material from below the geomembrane and transported it to the drainage zones located at the interface of the embankment and concrete structures. Due to continuing seepage and erosion of dam material the geomembrane ruptured and this resulted in the full reservoir head being applied to the embankment fill material. This increased the seepage through the dam fill and caused concentrated leak erosion of the fine-grained material at the contact with the concrete structure, and this lead to the failure of the embankment. © 2013 Published by Elsevier Ltd.
Gupta H.V.,University of Arizona |
Water Resources Research | Year: 2011
We show that Mean Squared Error (MSE) and Nash-Sutcliffe Efficiency (NSE) type metrics typically vary on bounded ranges under optimization and that negative values of NSE imply severe mass balance errors in the data. Further, by constraining simulated mean and variability to match those of the observations (diagnostic approach), the sensitivity of both metrics is improved, and NSE becomes linearly related to the cross-correlation coefficient. Our results have important implications for analysis of the information content of data and hence about inferences regarding achievable parameter precision. © 2011 by the American Geophysical Union.
Mattila J.,Geological Survey of Finland |
Geology | Year: 2012
The relationship between present-day stress state and fluid flow within fractures in crystalline bedrock is investigated in the light of a comprehensive fracture database consisting of 38,703 fracture observations made during investigations at the site of a planned high-level nuclear waste repository in Finland. By combining fracture orientation data with detailed stress and fluid flow measurements, we observe that the orientations of conductive fractures display characteristic patterns attributed to the effect of the present-day triaxial stress state and that the highest transmissivities are associated with fractures having the lowest normal tractions. Our findings indicate that contemporary stress data combined with slip and dilation tendency analysis can be used in predicting the orientations and relative transmissivity values of conductive fractures. © 2012 Geological Society of America.
Agency: Cordis | Branch: FP7 | Program: CP-TP | Phase: KBBE.2011.3.4-02 | Award Amount: 13.25M | Year: 2012
BioConSepT aims to demonstrate the technically feasibility of White Biotech processes for the conversion of 2nd generation biomass into platform chemicals, which are 30% cheaper and 30% more sustainable than existing chemical routes or 1st generation processes. BioConSepT uses lignocellulose and non-edible oils & fats as cheap, abundantly available feedstocks, which cannot be used as food. The main achievements expected for BioConSepT are: (1) to develop the robust enzymes and micro-organisms suited for the more dirty 2nd generation feedstocks; (2) to reduce equipment costs and the number of process steps by the integration of bioconversion and highly selective separation technologies; (3) to facilitate easy integration in existing production chains by deploying combinations of bio- and chemical conversions and by proving the suitability of the produced platform chemicals for bio-based polymers, resins, plasticizers, solvents and surfactants and (4) by realisation of the 1st demonstration of integrated production chains from 2nd generation feedstocks to platform chemicals at industrially relevant scale. BioConSepT will bring novel technologies from lab to pilot scale by high level applied research. The consortium consists of 15 SMEs (suppliers of equipment, bioconversions, separation technologies and services), 10 large industrial parties (producers, end-users, engineering and consultancy companies) and 5 leading RTOs from 11 different countries. The large industrial parties and SMEs expect new products, processes, services and customers with a potential value of hundreds of M. BioConSepT will reduce the total processing costs and thus improve the competitiveness of the European agro/food and chemical industries. The use of renewable biomass will lead to a significant reduction of Green House Gas emissions and a more secure supply of feedstocks, energy and water as well as reduction of waste generation.