Data strategies and tactics used to create and promulgate robust databases across a wide organization are subject to a number of constraints and challenges.This presentation reviews lessons learned from one company in...Data strategies and tactics used to create and promulgate robust databases across a wide organization are subject to a number of constraints and challenges.This presentation reviews lessons learned from one company in the oil and gas industry,and illustrates how that company met and overcame challenges during the database design and implementation phases.展开更多
Opening of the Red Sea started while the core of the lavas of the Ethiopian Large Igneous Province（LIP）was being erupted at;0 Ma（Hughes et al.,1991）and has continued to the Present.In the southern Red Sea,oceanic
Capacity for agriculture production needs to be increased to meet the demands of the increasing human population. Within alternatives for an improvement in technology of agriculture in arid and sub arid countries’ ir...Capacity for agriculture production needs to be increased to meet the demands of the increasing human population. Within alternatives for an improvement in technology of agriculture in arid and sub arid countries’ irrigation with magnetized water (MH<sub>2</sub>O). This study was carried out to investigate the nutrients taken up by plants irrigated with (MH<sub>2</sub>O). During this study, we have grown Cucumis sativus in greenhouse for one month. The growth was carried on a sandy loamy soil type with two sets of pots 1) one set of pots without MH<sub>2</sub>O, as reference and 2) another set of pots was irrigated with MH<sub>2</sub>O. The results revealed that the plants’ leaves irrigated with MH<sub>2</sub>O were enriched in Zn, Cu and depleted in Ba, Ti and Sr relative to the plant grown in control conditions and unchanged in Fe, V, Ni;Mn and Cr. The roots of the same plants irrigated with MH<sub>2</sub>O were depleted in Fe, Mn, Ti, Ba, V, Ni, Cr, Zn and Sr. Translocation of elements from roots to leaves irrigated with MH<sub>2</sub>O seems more important than for plants irrigated with ordinary water. Based on the results of this study, irrigation with magnetized water may exhibit a positive effect on nutrition of plants. In addition to the effect of MH<sub>2</sub>O on growth, content of nutrients, revealed the effect on the quality of plants. These results show that irrigation with MH<sub>2</sub>O in arid countries with reduced water resources, may help to promote agriculture for an amelioration by increasing available elements.展开更多
In deciding on a theme of relevance to Africa that would contribute to the“Resourcing of Future Generations Initiative”of the IUGS and would in this way provide a legacy project for the 35th International Geological...In deciding on a theme of relevance to Africa that would contribute to the“Resourcing of Future Generations Initiative”of the IUGS and would in this way provide a legacy project for the 35th International Geological Congress in Cape Town,South Africa,the topic of The Great Mineral Fields of Africa seemed to be an obvious choice for a special issue of Episodes.A large variety of minerals have been exploited in diverse parts of the continent for thousands of years and legends of rich gold deposits first attracted outside interest to Africa.展开更多
The mineral wealth and potential of the African continent has been recognised for centuries and various minerals have been exploited from different parts of the continent for many millennia.Gold,copper and iron mining...The mineral wealth and potential of the African continent has been recognised for centuries and various minerals have been exploited from different parts of the continent for many millennia.Gold,copper and iron mining and metallurgy are believed to have first developed in Egypt,in the third and second millennia BCE and somewhat later in other parts of the continent.Ancient gold workings abound in many parts of Africa,with some of these having become successful gold mines during the period of colonisation.Over the past half century,many of these mines,as well as some previously unknown deposits,have become major gold producers following various prospecting endeavours using more modern exploration techniques.Besides gold,copper and iron,a number of other minerals were exploited in pre-historic times from various parts of the continent.Notable amongst these were lead,zinc and tin.展开更多
From the discovery of diamonds in South Africa in 1866 until the end of 2013,Africa is estimated to have produced almost 3.2 Bct out of a total global production of 5.03 Bct,or 63.6%of all diamonds that have ever been...From the discovery of diamonds in South Africa in 1866 until the end of 2013,Africa is estimated to have produced almost 3.2 Bct out of a total global production of 5.03 Bct,or 63.6%of all diamonds that have ever been mined.展开更多
文摘Data strategies and tactics used to create and promulgate robust databases across a wide organization are subject to a number of constraints and challenges.This presentation reviews lessons learned from one company in the oil and gas industry,and illustrates how that company met and overcame challenges during the database design and implementation phases.
基金P & R Geological Consultants and the CNRS/INSU/Marges programme for funding this work
文摘Opening of the Red Sea started while the core of the lavas of the Ethiopian Large Igneous Province（LIP）was being erupted at;0 Ma（Hughes et al.,1991）and has continued to the Present.In the southern Red Sea,oceanic
文摘Capacity for agriculture production needs to be increased to meet the demands of the increasing human population. Within alternatives for an improvement in technology of agriculture in arid and sub arid countries’ irrigation with magnetized water (MH<sub>2</sub>O). This study was carried out to investigate the nutrients taken up by plants irrigated with (MH<sub>2</sub>O). During this study, we have grown Cucumis sativus in greenhouse for one month. The growth was carried on a sandy loamy soil type with two sets of pots 1) one set of pots without MH<sub>2</sub>O, as reference and 2) another set of pots was irrigated with MH<sub>2</sub>O. The results revealed that the plants’ leaves irrigated with MH<sub>2</sub>O were enriched in Zn, Cu and depleted in Ba, Ti and Sr relative to the plant grown in control conditions and unchanged in Fe, V, Ni;Mn and Cr. The roots of the same plants irrigated with MH<sub>2</sub>O were depleted in Fe, Mn, Ti, Ba, V, Ni, Cr, Zn and Sr. Translocation of elements from roots to leaves irrigated with MH<sub>2</sub>O seems more important than for plants irrigated with ordinary water. Based on the results of this study, irrigation with magnetized water may exhibit a positive effect on nutrition of plants. In addition to the effect of MH<sub>2</sub>O on growth, content of nutrients, revealed the effect on the quality of plants. These results show that irrigation with MH<sub>2</sub>O in arid countries with reduced water resources, may help to promote agriculture for an amelioration by increasing available elements.
文摘In deciding on a theme of relevance to Africa that would contribute to the“Resourcing of Future Generations Initiative”of the IUGS and would in this way provide a legacy project for the 35th International Geological Congress in Cape Town,South Africa,the topic of The Great Mineral Fields of Africa seemed to be an obvious choice for a special issue of Episodes.A large variety of minerals have been exploited in diverse parts of the continent for thousands of years and legends of rich gold deposits first attracted outside interest to Africa.
文摘The mineral wealth and potential of the African continent has been recognised for centuries and various minerals have been exploited from different parts of the continent for many millennia.Gold,copper and iron mining and metallurgy are believed to have first developed in Egypt,in the third and second millennia BCE and somewhat later in other parts of the continent.Ancient gold workings abound in many parts of Africa,with some of these having become successful gold mines during the period of colonisation.Over the past half century,many of these mines,as well as some previously unknown deposits,have become major gold producers following various prospecting endeavours using more modern exploration techniques.Besides gold,copper and iron,a number of other minerals were exploited in pre-historic times from various parts of the continent.Notable amongst these were lead,zinc and tin.
文摘From the discovery of diamonds in South Africa in 1866 until the end of 2013,Africa is estimated to have produced almost 3.2 Bct out of a total global production of 5.03 Bct,or 63.6%of all diamonds that have ever been mined.
