introduction because of expansion of agricultural activities and excessive use of chemical fertilizers and location of municipal and industrial wastewater of andimeshk, it is possible for this aquifer to be polluted. therefore, the aim of present study is to assess the aquifer vulnerability of andimeshk plain and recognition of sensitive areas against pollution which this work can be conducted ...

background: groundwater nitrate pollution is an important environmental problem in water resources management. in this regard, specific measures aiming at prevention of water pollution will be helpful to managers and decision-makers. identification of aquifers’ vulnerable areas and determination of groundwater protection zones using most widely used models, such as drastic and cd, are one of th...

bazargan and poldasht plains are located in the north of west azarbaijan, northwest of iran. in this area, groundwater supplies main water demands. aim of this research is assessment of aquifer vulnerability for contamination potential on the basis of hydrogeological conditions of the study area. for this purpose the combined use of the drastic and geographical information system (gis) demonstr...

This paper presents a new nature inspired Intelligent Water Drops (IWD) based algorithm for finding peaks in continuous multimodal optimization problems. Initially various conceptual similarities were identified between IWD algorithm and Genetic Algorithm(GA). Simultaneously applying IWD-Continuous Optimization(IWD-CO) algorithm and GA on a function in finding the global optima and found IWDCO ...

1. ABSTRACT Since 1994 the student cohort at Central Queensland University (CQU) has undergone drastic change in ability, culture and mode of attendance. This paper describes a project attempting to address the problems caused by these changes. The project has developed alternative teaching approaches and material including animations, online lectures, a Web site mirrored on CD−ROM, the use of ...

Pressure dependence of out-of-plane resistivity rc has been investigated in an optimally-doped high-Tc cuprate La22xSr xCuO4. By applying pressure, we found a drastic decrease in rc which reaches 50% at P58 GPa. This surprisingly large P dependence implies that the thermal contraction along the c axis is significantly reflected in the rc(T) curve, leading to a metal-like term; hence La22xSr xCu...

In this paper we address the problem of energy-efficient broadcast in wireless ad hoc networks. We first extend the broadcast incremental power algorithm (BIP) [4] – an efficient algorithm to construct broadcast trees – to support sectored antennas. Secondly, we simulate and extensively compare the original BIP algorithm with the extended and modified BIP. The simulation shows drastic reduction...

Rhodopseudomonas palustris, Glutamine Synthetase Regulation, Adenylylation Glutamine synthetase from Rhodopseudomonas palustris is regulated via an adenylylation/ deadenylylation mechanism. The enzyme purified from ammonia-grown cells, released AMP upon treatment with phosphodiesterase, along with drastic changes in its pH and metal dependency. Kinetic parameters for enzyme-substrate interactio...