The heavy metal uptake of ten plant species was studied under different soil and climatic conditions. Effects of soil pH, temperature, plant species and phenophase on the heavy metal content of stems and leaves were determined in pot experiments. Plants and soil samples were collected from a lead/zinc mine ore (Gyöngyösoroszi, Hungary) and characterised by high contents of Pb, Zn, As, Cd, Cu. T...

This paper discusses a scheme that allows all parties involved in the maintenance of a chemical plant: the plant owner (customer), the engineering company, the equipment vendors, and the maintenance firms, to form a virtual service enterprise (VSE) whenever a maintenance service is necessary, in an attempt to provide required services more timely. This paper also discusses the requirements for ...

The planning of the material flow in a car plant has become a complex and difficult task which can no longer be accomplished satisfactorily without computer support. The main difficulty is to predict the effects of local decisions on the overall plant performance. In this paper, we present a framework for developing planning systems that compute plant-wide consistent production programs and thu...

China imports most of its potassium (K) requirements for crop production. The objective of this study was to evaluate indica rice hybrids for Kuse efficiency. Twenty-eight indica rice hybrids were evaluated in nutrient solution. The K influx rate was greatest in genotype Weiyou 64 (684.9 nmol K plant h) and least in genotype Xie A/909 (457.2 nmol K plant h). The K-use efficiency was greatest in...

Plant genetic engineering has become one of the most important molecular tools in the modern molecular breeding of crops. Now a days, production of transgenic plants is a routine process in some crop species. Transgenes are delivered into plants to confer novel traits such as improving nutritional qualities, resistance to pests. It is possible to insert genes from plants at evolutionary distant...

Smoothness constraints are formulated for weights in H∞ loop-shaping design in order to ensure smooth variations in their magnitude response. Smoothness in the magnitude response of weights prevents the cancelation of lightly damped poles/zeros of the plant when the shaped plant is formed by cascading the nominal plant with the weights. It also allows fitting by low-order transfer functions whe...

This paper discusses coordinated reactive power voltage (Q-V) control in a multi machine steam power plant. The drawbacks of manual Q-V control are briefly listed, and the design requirements for coordinated Q-V controller are specified. Theoretical background and mathematical model of the new controller are presented next followed by validation of developed Matlab/Simulink model through compar...

Among herbivorous insects with a complete metamorphosis the larval and adult stages usually differ considerably in their nutritional requirements and food ecology. Often, feeding on plant structural tissue is restricted to the larval stage, whereas the adult stage feeds primarily or exclusively on plant-provided food supplements such as nectar and pollen. Research on herbivore nutritional ecolo...

To classify equipments regardless of their manufacturer, the KKS, a product classification system, provides the required features to develop Plant Data Management Information System (PDMIS). Equipment items have one status at any one time. Equipment installed in a plant is assigned to a group with the KKS nomenclature system. In process plant, products of the same type are employed several time...

0950-5849/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.infsof.2012.07.011 ⇑ Corresponding author. E-mail addresses: [email protected] (S.T. Ac te.uam.es (J.W. Castro), [email protected] (N. Juristo). Context: To develop usable software we need to understand the users that will interact with the system. Personas is a HCI technique that gathers information about users in...