The aim of the present work was to assess the influence of organic amendment applications compared to mineral fertilization on soil microbial activity and functional diversity. The field experiment was set up on a soil classified as an Eutric Cambisol developed from loess (South-East Poland). Two doses of both dairy sewage sludge (20 Mg·ha(-1) and 26 Mg·ha(-1)) and of mineral fertilizers contai...

The frequency, magnitude, and size of forest disturbances are increasing globally. Much recent research has focused on how the occurrence of one disturbance may affect susceptibility to subsequent disturbances. While much has been learned about such linked disturbances, the strength of the interactions is likely to be contingent on the severity of disturbances as well as climatic conditions, bo...

ion of the conceptual model-data model-data structure chain, abstraction of locations within the world, and abstraction of the boundary topology are very powerful from the standpoint of model development. However, the presence of multiple levels of abstraction, the potential for heterogeneous data sources, and a variable policy for coordinate transformation that is unknown a priori mean that th...

Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) is charact erized by a unique combination of extremely low permeability, high strength and deformability. Extensive R&D works and applications over the last 10 years have demonstrated that cast on site UHPFRC is a fast, efficient and price competitive method for the repair/re habilitation of existing structures. More recently, an origina...

Change orders are inevitable in almost everyday’s construction project. They can significantly increase the project cost and duration, and lead to big number of claims and disputes, which in turn create an adversarial relationship among project participants. Studies revealed that improving the administrative process of change orders are beneficial in reducing the cost and risk for all the proje...

The living standard of Chinese residents greatly improved during China's current economic development. However, residential building energy consumption has also grown quickly. Therefore, it is critical to carry out building energy conservation in residential premises to ensure both building comfort and controlled energy consumption. Digital technology, an effective tool, could help designers co...

Highly ordered silica was synthesised by using a lamellar phase comprising the anionic fluorinated surfactant sodium perfluorooctanoate and the partially-fluorinated co-surfactant/oil 1H,1H,2H,2H-perfluorooctan-1-ol in water. The phase behaviour of this system was thoroughly analysed, and it was found that even low levels of the alcohol (<0.5 mol%) were sufficient to induce a phase change from ...

This paper starts by briefly describing the current situation of the world, including global environmental degradation, poverty and conflicts, displaying how unsustainable the present world is. In order to make this world sustainable, all sorts of actors in the international arena should play a more effective role. From this point of view, the paper examines roles of governments and the United ...

An experiment was conducted to determine the distribution of nitrogen-15 in tissues of laying hens receiving different levels of N-CCC in diets. Twenty brown laying hens were divided into four groups and randomly assigned into one of four dietary treatment groups consisting of 0, 5, 50 and 100 ppm N-CCC inclusion. The hens were individually fed with the N-CCC diets in battery cages for 11 days ...

Keywords: Jet aircraft Fuel price Operating cost Leontief technology Translog a b s t r a c t Investigation of the airline response to a fuel price increase is in effect an investigation of the role of variable interactions in aircraft cost models. We examine the impact of fuel price on aircraft costs and airline operational strategies by developing two classes of operating cost models for jet ...