A fast algori thm for Gaussian eliminat ion over GF(2) is proposed. The proposed algorithm employs binary search technique to locate l s along the colum ns of the large binary matrix being triangular ized. T he algori thm requires 2m 2 + m log211 2m bit operations to triang ularize an II X m matrix on a bit-array with 11 processors and m + 2 + l"log2nl bits of vertica l memory per processor . D...

The paper describes the performance, observations and numerical interpretation of a full-scale in situ heating test conducted on Callovo-Oxfordian (COx) claystone Meuse / Haute-Marne (MHM) Underground Research Laboratory (URL) simulating heat-emitting, high-level radioactive waste disposal concept. In experiment, five heaters 3 m-long are placed axis microtunnel excavated COx to simulate heat p...

The paper concerns numerical modelling of complicated GeoTechnical problems as mine stability, performance of underground radioactive waste repositories or microstructure modelling of geocomposites. The modelling uses finite elements and parallel computing based on overlapping domain decomposition. Important implementation issues for this approach are discussed: inexact solution of subproblems,...

A fundamental postulate of quantum mechanics states that a measurement of a quantum system causes the collapse of the wave function. This is in contrast to the smooth, continuous, deterministic time evolution of the wave function in between measurements, governed by the Schrodinger equation. The latter is similar to classical physics; the former is unique to quantum mechanics. (Note that many ...

Abstract. Enhanced Geothermal Systems (EGS) are widely used in the development and application of geothermal energy production. They usually consist two deep boreholes (well doublet) circulation systems, with hot water being abstracted, passed through a heat exchanger, reinjected into reservoir. Recently, simple analytical solutions have been proposed to estimate pressure at abstraction borehol...

Dünya çapında ekonomik ve çevresel maliyetine rağmen şişelenmiş sulara olan ilgi artmaktadır. Şişelenmiş erişim gücü az kesimler ise şehirlerde bulunan tatlı su çeşmelerinden içme suyu ihtiyaçlarını karşılamaya çalışmaktadırlar. Bu çalışmada Konya’da satılan sulardan 24 adet doğal kaynak suyu, 4 mineralli 28 alınan numunelerde başlıca dezenfeksiyon yan ürünlerinden trihalometan (THM) (kloroform...

Problems caused by dissolved organic matter (DOM) present in drinking water include its constituent compounds being precursors in the formation of disinfection by-products that pose risks to human health. The prediction of trihalomethanes (THM) formation is highly challenging due to a wide range of impacting factors, including the concentration and character of DOM, pH, temperature and the pres...

There is much debate on the carcinogenic potential of disinfection by-products (DBP) in chlorinated water supplies. Until recently, epidemiological studies have been limited in their ability to examine accurately the risk of cancer with exposure to environmental carcinogens. This has largely been due to the long latency periods associated with cancer development, and the difficulties in accurat...

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