Selecting a site for a nuclear power plant requires extensive studies to ensure its safety and stability during its operation until its decommissioning. The 4,500-year old Egyptian pyramids at Giza are buildings to le...Selecting a site for a nuclear power plant requires extensive studies to ensure its safety and stability during its operation until its decommissioning. The 4,500-year old Egyptian pyramids at Giza are buildings to learn from. This paper tries to pin down the reasons for the survival of the Giza pyramids in order to reach a criterion for choosing sites for important buildings. It argues that the site selection and the geological properties of the area, being away from seismic effects,, floods and groundwater levels, the stability of the geometric form of the pyramid, the solidity of the structural engineering and precision of execution arguably are the reasons why the Great Pyramids of Giza are the only survivors of the seven wonders of the ancient world.展开更多
Nowadays, with the rapid economic and technological development, people＇s material and spiritual requirements has got great satisfaction. In the course of historical development, ancestors of human beings created inc...Nowadays, with the rapid economic and technological development, people＇s material and spiritual requirements has got great satisfaction. In the course of historical development, ancestors of human beings created incomparable cultural heritage relics and spiritual civilization with their diligent hands and the great wisdom left us countless cultural heritage relics, many of them have become the famous wonder of the world. These civilizations and cultural heritage are located in Asia, Europe and America, Africa, for example, the Egyptian Pyramids, Acropolis in Athens. Mayan Civilization in Mexico, Mogao Grottoes of Dun Huang of China, Qin Terra-Cotta Warriors and Horses Figurines, Angkor Wat-Cambodia, Venice-ltaly, the Buddhas of Bamiyan in Afghanistan. The essay will mainly choose the 4 most famous representative cultural heritages worldwide to discuss their artistic characteristics, current situation and damage level and effective protective measures.展开更多
The physico-chemical and biological （algal and bacterial） quality of tap water in Tanta City were elucidated. Samples were collected during December 2011, covering all the water plants and the areal extension of the...The physico-chemical and biological （algal and bacterial） quality of tap water in Tanta City were elucidated. Samples were collected during December 2011, covering all the water plants and the areal extension of the pipe line network in Tanta. Total dissolved solids content classifies water origin into surface water, shallow and deep groundwater. Fe, Mn and hardness in some samples of groundwater origin are obviously exceeding the WHO （World Health Organization） limit. Mostly, green algae are found （31 species）, followed by diatoms （19 species）, then blue-green algae （13 species）. CCA （Canonical Corresponding Analysis） indicates that green algae are strongly correlated with pH, NH4, alkalinity, Mn and Si; diatoms with EC （electric conductivity）, turbidity, Zn and Si and blue green algae with EC and alkalinity. 50% of samples of surface origin, 80% of samples of both deep and shallow groundwater origins crossed WHO and Egyptian guideline in their content of mean TCC （Total Coliform Count）. CCA estimates strong correlations of TCC with temperature, NH4 and PO4; E. coli with EC; heterotrophic bacteria with turbidity and NO3; Salmonella sp. with Si and SO4 and Pseudomonas aeruginosa with Mn. Finally, the water plants treatment may be not effective and pipes serve as a reservoir for pathogenic microorganisms.展开更多
文摘Selecting a site for a nuclear power plant requires extensive studies to ensure its safety and stability during its operation until its decommissioning. The 4,500-year old Egyptian pyramids at Giza are buildings to learn from. This paper tries to pin down the reasons for the survival of the Giza pyramids in order to reach a criterion for choosing sites for important buildings. It argues that the site selection and the geological properties of the area, being away from seismic effects,, floods and groundwater levels, the stability of the geometric form of the pyramid, the solidity of the structural engineering and precision of execution arguably are the reasons why the Great Pyramids of Giza are the only survivors of the seven wonders of the ancient world.
文摘Nowadays, with the rapid economic and technological development, people＇s material and spiritual requirements has got great satisfaction. In the course of historical development, ancestors of human beings created incomparable cultural heritage relics and spiritual civilization with their diligent hands and the great wisdom left us countless cultural heritage relics, many of them have become the famous wonder of the world. These civilizations and cultural heritage are located in Asia, Europe and America, Africa, for example, the Egyptian Pyramids, Acropolis in Athens. Mayan Civilization in Mexico, Mogao Grottoes of Dun Huang of China, Qin Terra-Cotta Warriors and Horses Figurines, Angkor Wat-Cambodia, Venice-ltaly, the Buddhas of Bamiyan in Afghanistan. The essay will mainly choose the 4 most famous representative cultural heritages worldwide to discuss their artistic characteristics, current situation and damage level and effective protective measures.
文摘The physico-chemical and biological （algal and bacterial） quality of tap water in Tanta City were elucidated. Samples were collected during December 2011, covering all the water plants and the areal extension of the pipe line network in Tanta. Total dissolved solids content classifies water origin into surface water, shallow and deep groundwater. Fe, Mn and hardness in some samples of groundwater origin are obviously exceeding the WHO （World Health Organization） limit. Mostly, green algae are found （31 species）, followed by diatoms （19 species）, then blue-green algae （13 species）. CCA （Canonical Corresponding Analysis） indicates that green algae are strongly correlated with pH, NH4, alkalinity, Mn and Si; diatoms with EC （electric conductivity）, turbidity, Zn and Si and blue green algae with EC and alkalinity. 50% of samples of surface origin, 80% of samples of both deep and shallow groundwater origins crossed WHO and Egyptian guideline in their content of mean TCC （Total Coliform Count）. CCA estimates strong correlations of TCC with temperature, NH4 and PO4; E. coli with EC; heterotrophic bacteria with turbidity and NO3; Salmonella sp. with Si and SO4 and Pseudomonas aeruginosa with Mn. Finally, the water plants treatment may be not effective and pipes serve as a reservoir for pathogenic microorganisms.
