Search results for "lotat"
showing 6 items of 6 documents
Lapiojääkärin välirauha : Miehikkälän Salpalinjan rakentajien arkipäivää 1940-1941
2006
Flotation with sedimentation: Steady states and numerical simulation of transient operation
2020
Abstract A spatially one-dimensional model of the hydrodynamics of a flotation column is based on one continuous phase, the fluid, and two disperse phases: the aggregates, that is, bubbles with attached hydrophobic valuable particles, and the solid particles that form the gangue. A common feed inlet for slurry mixture and gas is considered and the bubbles are assumed to be fully aggregated with hydrophobic particles as they enter the column. The conservation law of the three phases yields a model expressed as a system of partial differential equations where the nonlinear constitutive flux functions come from the drift-flux and solids-flux theories. In addition, the total flux functions are …
Simulation and control of dissolved air flotation and column froth flotation with simultaneous sedimentation.
2020
Abstract Flotation is a separation process where particles or droplets are removed from a suspension with the aid of floating gas bubbles. Applications include dissolved air flotation (DAF) in industrial wastewater treatment and column froth flotation (CFF) in wastewater treatment and mineral processing. One-dimensional models of flotation have been limited to steady-state situations for half a century by means of the drift-flux theory. A newly developed dynamic one-dimensional model formulated in terms of partial differential equations can be used to predict the process of simultaneous flotation of bubbles and sedimentation of particles that are not attached to bubbles. The governing model…
Wastewater treatment and reclamation : A review of pulp and paper industry practices and opportunities
2016
The pulp and paper (P&P) industry worldwide has achieved substantial progress in treating both process water and wastewater, thus limiting the discharge of pollutants to receiving waters. This review covers a variety of wastewater treatment methods, which provide P&P companies with cost-effective ways to limit the release of biological or chemical oxygen demand, toxicity, solids, color, and other indicators of pollutant load. Conventional wastewater treatment systems, often comprising primary clarification followed by activated sludge processes, have been widely implemented in the P&P industry. Higher levels of pollutant removal can be achieved by supplementary treatments, which…
“If you seek it, you will find it”. Methodology for the carpological study of the Middle Magdalenian of Cova de les Cendres site (Teulada-Moraira, Al…
2016
La carpología, el estudio de los frutos, semillas, tubérculos, rizomas y bulbos recuperados en yacimientos arqueológicos, ha sido aplicada mayoritariamente a contextos correspondientes a sociedades productoras, mientras que los estudios carpológicos de yacimientos de cazadores-recolectores son escasos. En los últimos años, estos han experimentado un incremento, desvelándose el valor de la información que proporcionan: económica, cultural, botánica y ecológica. Presentamos en este artículo la metodología aplicada para el análisis carpológico de un conjunto de muestras procedentes de un nivel fechado en el Magdaleniense medio de la Cova de les Cendres (Teulada-Moraira, Alicante).
Suojeluskunnat ja Lotta Svärd syksyllä 1944 : toiminnan lakkauttaminen ja omaisuuden luovutukset Keski-Suomessa
2008
Syyskuussa 1944 solmittu aselepo Suomen ja Neuvostoliiton välillä allekirjoitettiin välirauhansopimuksella. Sopimukseen kuuluivat välirauhanehdot, jotka Suomen tuli täyttää. Ehtojen 21. artikla edellytti kaikkien fasististen ja Neuvostoliiton vastaista propagandaa harjoittavien järjestöjen lakkauttamista. Artikla poliittisia ja sotilaallisia järjestöjä. Artiklan nojalla lakkautettiin ensimmäiseksi mm. AKS ja IKL ja marraskuussa suojeluskuntajärjestö ja Lotta Svärd. Viimeksi mainittuja koskivat myös armeijan demobilisaatiovaatimukset, Neuvostoliitto ei voinut hyväksyä vapaaehtoisia sotilaallisia organisaatioita, joihin myös Lotta Svärdin katsottiin kuuluvan. Suojeluskuntajärjestö, josta oli …