Investigations were carried out on coal tailings by conventional cell and column flotation techniques. Tests were conducted to assess processing coal tailings of Alborz Markazi coal washing plant in Iran by column flotation. The effects of reagent type/dosage were investigated with conventional flotation and their results were used in the performance of column flotation. Also the effects of the...

The action plan takes very much into account the core messages of the World Bank’s Environment Strategy and reflects thinking articulated in the Green Growth Strategy. The Environment Strategy emphasizes green, clean, and resilient development. To clarify, in this case, Green means efficient, incorporating the value of natural assets; Clean means reduced pollution, healthy and low GHG emitting,...

This paper discusses the possibility of deploying a shortrange cognitive radio (secondary communication system) within the service area of a primary system. Although the secondary system interferes with the primary system, there are certain locations in the service area of the primary system where the cognitive radio can reuse the frequency of the primary system without causing harmful interfer...

In this paper, we develop new bounds for the first order Marcum Q-function, which are extremely tight and tighter than any of the existing bounds to the best of our knowledge. The key idea of our approach is to derive refined approximations for the 0 order modified Bessel function in the integration region of the Marcum Q-function. The new bounds are very tight and can serve as an effective mea...

purpose to verify whether active recovery (ar) applied after a kickboxing match resulted in better performance in anaerobic tests when compared to passive recovery (pr). methods eighteen kickboxers volunteered to participate on a kickboxing match preceded and followed by anaerobic tests: squat jump (sj), the counter movement jump (cmj) and the upper-body wingate test. blood lactate (bl), heart ...

background to current knowledge, different oocyte's recovery method and various seasons have profound impact on in vitro embryo production (ivep). objectives the aim of this study was to define an efficient recovery method for oocytes harvesting from slaughterhouse material in different seasons, and their effects on ivep yield. materials and methods ovaries from slaughtered ewes in breeding sea...

Data availability is crucial to overall application availability. This paper describes data failures and classifies them as either physical or logical. Physical data failures such as data loss and corruptions are introduced in the I/O layers; logical data failures are introduced in the application layer. Current data protection techniques are geared towards physical data failures. This paper re...

This paper explores the evolution of the labor market across the business cycle and specifically the relationship between the unemployment rate and the average duration of unemployment. Labor market recoveries have long been thought of as lagging recoveries in broad economic activity. In particular, the unemployment rate peaks several months after the official business cycle trough and the aver...

This paper presents a method for analyzing the Bit Error Rate of recovered data for PLL-based data recovery systems (DRS) as the PLL comes into lock. This method is based on the analyses of the transient response of the Phase-Locked Loop (PLL) and the associated jitter models. It provides a means to predict the acquisition time needed for a data recovery system to reach a given BER. Practical c...

We propose a solution to problem solving by analogy which is an alternative to Carbonell's transformational analogy. Given a plan that succeeds for the base, we apply the plan to the target and propose to correct its failures by an abductive recovery mechanism inspired from abductive recovery from failed proofs.