The variations of the meltwater runoff draining from Kartamak Glacier in Mt. Muztag Ata in China were studied by using the measured hydrological data from 1 June to 25 August 2003. The meltwater runoff is mainly affec...The variations of the meltwater runoff draining from Kartamak Glacier in Mt. Muztag Ata in China were studied by using the measured hydrological data from 1 June to 25 August 2003. The meltwater runoff is mainly affected by ambient temperature and precipitation. Meltwater and precipitation samples were collected from 10 to 23 August 2003. Their pH, EC (electric conductivity) and the major ions (Na^+, K^+, Ca^(2+), Mg^(2+), Cl^-, NO_3^-, SO_~4^(2-)) were determined. pH values showed a positive correlation with EC values for all samples. Meltwater samples were slightly alkaline. Sulfate and calcium were the dominant anion and cation in the measured ions, respectively. All the ion concentrations had inverse relationships with runoff or water level. In order to discuss the origins of dissolved chemical substances in the glacial meltwater, a principal component analysis was carried out. The results showed that water-rock interaction determined the ion components of the meltwater.展开更多
The principal objectives of this research are to provide information, commentary, and analysis of the potential opportunities for Qatar in developing its Islamic financial services and industry. This research examines...The principal objectives of this research are to provide information, commentary, and analysis of the potential opportunities for Qatar in developing its Islamic financial services and industry. This research examines how competitive Qatar is today and its future prospects in Islamic finance. This research provides policy makers and Islamic finance stakeholders with a superior understanding of the role of the key competitive factors in Islamic fmance. It is anticipated that this research will influence the growth and diversification of Islamic financial services in Qatar.展开更多
In recent years, the pressure of increasing coastal industries and tourism activities has, in some areas, led to the clearing of many coastal habitats along the Qatar＇s shorelines for the construction of tourist reso...In recent years, the pressure of increasing coastal industries and tourism activities has, in some areas, led to the clearing of many coastal habitats along the Qatar＇s shorelines for the construction of tourist resorts, tourism-related development and industrial facilities. Such threats are leading to the increasing demand for detailed mangrove maps for the purpose of measuring the extent of decline in mangrove ecosystems. Detailed mangrove maps at the community or species level are, however, not easy to produce, mainly because mangrove forests are very difficult to access. Without doubt, remote sensing is a serious alternative to traditional field-based methods for mangrove mapping, as it allows information to be gathered from the forbidding environment of mangrove forests, which otherwise, logistically and practically speaking, would be extremely difficult to survey. Remote sensing applications for mangrove mapping at the fundamental level are already well established but, surprisingly, a number of advanced remote sensing applications have remained unexplored for the purpose of mangrove mapping at a finer level. Consequently, the aim of this paper is to unveil the potential of some of the unexplored remote sensing techniques for mangrove studies. Temporal Landsat TM image of 1986, Landsat ETM image of 2000 and Resourcesat-1 LISS 3 image of 2008 are used to calculate percentage change in mangrove cover at AI Dhakira site using geometrically registered and radiometrically corrected historical Landsat and Resourcesat-1 images. Region masks are employed to isolate the unwanted area from the images. NDVI （normalized difference vegetation index） is used to detect mangroves using near-infrared and red bands which are computed from the satellite images. The ground-truthing visit to AI Dhakira site is conducted to confirm the results of the analysis. Change detection is applied and mangrove in the study area is found to have decreased by about 8.79% from 2000 to 2008.展开更多
This paper presents a case study about a condition monitoring project for asset management implementing an advanced decision process for maintenance and asset replacement in the Qatar electricity distribution network....This paper presents a case study about a condition monitoring project for asset management implementing an advanced decision process for maintenance and asset replacement in the Qatar electricity distribution network. It describes the principles used to produce an assessment of the health of the entire fleet of assets, together with the concepts retained to prioritize the interventions on the distribution network equipment. The paper goes through the actual steps taken for the preparation and execution mode of the overall project. It covers the following project phases： definition of the problem ＆ business objectives, process definition and preparation tasks, presentation of solutions and execution phase. The project being still in the implementation phase, the conclusions are preliminary but already demonstrate concrete and tangible benefits.展开更多
Performance characteristics data of solar photovoltaic （PV） cell/module are conventionally obtained under standard testing conditions. In the present work, the performance of PV modules under extreme temperatures an...Performance characteristics data of solar photovoltaic （PV） cell/module are conventionally obtained under standard testing conditions. In the present work, the performance of PV modules under extreme temperatures and insolations experienced in State of Qatar was utilized to aid presenting a simplified characterization approach for the special case of arid environmental conditions. The chosen model was the well-known single diode model with both series and parallel resistors for greater accuracy. The modeling technique was validated by comparing the numerically calculated electrical characteristics with experimentally obtained data using two approaches： a single indoor fixed monocrystalline PV module inside a solar simulation chamber which physically simulated different weather scenarios by changing irradiation intensities and temperature, and a set of outdoor fixed polycrystalline PV modules. The result of the indoor experiment was presented in form of performance curves, and the outdoor experiment results in a monthly accumulated power production chart format. Both illustration types showed acceptable tolerance.展开更多
This paper presents an outline of the current status, regulations, and qualifications required for the practice of traditional Chinese medicine （TCM） and acupuncture in Qatar. The paper also provides an overview of ...This paper presents an outline of the current status, regulations, and qualifications required for the practice of traditional Chinese medicine （TCM） and acupuncture in Qatar. The paper also provides an overview of the challenges and opportunities that face practitioners of Acupuncture as a complimentary medicine in Qatar and the recent licensing mechanisms introduced in January 2016. Qatar＇s 2030 vision and demand for continued development and sustainable growth includes the Chinese initiative ~One Belt, One Road＇ project which offers a golden opportunity for the further development of TCM in Qatar. The findings of this paper suggest that there are now real possibilities China and Qatar to cooperate in the exchange of medical services, training and education in the field of TCM.展开更多
我迫切地想打开原书,忠实地将神圣的原文翻译成我喜爱的语言。——歌德《浮士德》第一部分第三场一贡布里希在一篇关于远东艺术的重要文章《欧洲接受远东艺术史纲要》1中提到基歇尔[Athanasius Kircher,1602-1680]2(图1)的《中国图说》[...我迫切地想打开原书,忠实地将神圣的原文翻译成我喜爱的语言。——歌德《浮士德》第一部分第三场一贡布里希在一篇关于远东艺术的重要文章《欧洲接受远东艺术史纲要》1中提到基歇尔[Athanasius Kircher,1602-1680]2(图1)的《中国图说》[China Illustrata,1667]3(图2),称其广为人知,影响力大于卡尔塔里[Vincenzo Cartari,1531-1590]的《古代神祇图像》[Imagini colla sposizione degli dei degli antichi,1581],他是这样描述的:“它复制了一些中国的宗教绘画,其精确性令人惊讶,不过也有完全幻想的图画。”《中国图说》中包含了中国及远东的文字、建筑、风土人情、旅行路线等内容,其中有不少与宗教相关的版画,但有一组同题材的版画可能最能印证贡氏的概括。它们是关于菩萨的两幅图像,恰好一幅“精确性令人惊讶”,另一幅可谓“完全幻想的”。展开更多
基金This work was supported by the National Basic Research Program of China （Grant No.2005CB422004）；the Knowledge Innovation Project of CAS of China （Grant No. KZCX3-SW-339）；the Innovative Research Team of the National Natural Science Foundation of China （Grant No. 40121101）.
文摘The variations of the meltwater runoff draining from Kartamak Glacier in Mt. Muztag Ata in China were studied by using the measured hydrological data from 1 June to 25 August 2003. The meltwater runoff is mainly affected by ambient temperature and precipitation. Meltwater and precipitation samples were collected from 10 to 23 August 2003. Their pH, EC (electric conductivity) and the major ions (Na^+, K^+, Ca^(2+), Mg^(2+), Cl^-, NO_3^-, SO_~4^(2-)) were determined. pH values showed a positive correlation with EC values for all samples. Meltwater samples were slightly alkaline. Sulfate and calcium were the dominant anion and cation in the measured ions, respectively. All the ion concentrations had inverse relationships with runoff or water level. In order to discuss the origins of dissolved chemical substances in the glacial meltwater, a principal component analysis was carried out. The results showed that water-rock interaction determined the ion components of the meltwater.
文摘The principal objectives of this research are to provide information, commentary, and analysis of the potential opportunities for Qatar in developing its Islamic financial services and industry. This research examines how competitive Qatar is today and its future prospects in Islamic finance. This research provides policy makers and Islamic finance stakeholders with a superior understanding of the role of the key competitive factors in Islamic fmance. It is anticipated that this research will influence the growth and diversification of Islamic financial services in Qatar.
文摘In recent years, the pressure of increasing coastal industries and tourism activities has, in some areas, led to the clearing of many coastal habitats along the Qatar＇s shorelines for the construction of tourist resorts, tourism-related development and industrial facilities. Such threats are leading to the increasing demand for detailed mangrove maps for the purpose of measuring the extent of decline in mangrove ecosystems. Detailed mangrove maps at the community or species level are, however, not easy to produce, mainly because mangrove forests are very difficult to access. Without doubt, remote sensing is a serious alternative to traditional field-based methods for mangrove mapping, as it allows information to be gathered from the forbidding environment of mangrove forests, which otherwise, logistically and practically speaking, would be extremely difficult to survey. Remote sensing applications for mangrove mapping at the fundamental level are already well established but, surprisingly, a number of advanced remote sensing applications have remained unexplored for the purpose of mangrove mapping at a finer level. Consequently, the aim of this paper is to unveil the potential of some of the unexplored remote sensing techniques for mangrove studies. Temporal Landsat TM image of 1986, Landsat ETM image of 2000 and Resourcesat-1 LISS 3 image of 2008 are used to calculate percentage change in mangrove cover at AI Dhakira site using geometrically registered and radiometrically corrected historical Landsat and Resourcesat-1 images. Region masks are employed to isolate the unwanted area from the images. NDVI （normalized difference vegetation index） is used to detect mangroves using near-infrared and red bands which are computed from the satellite images. The ground-truthing visit to AI Dhakira site is conducted to confirm the results of the analysis. Change detection is applied and mangrove in the study area is found to have decreased by about 8.79% from 2000 to 2008.
文摘This paper presents a case study about a condition monitoring project for asset management implementing an advanced decision process for maintenance and asset replacement in the Qatar electricity distribution network. It describes the principles used to produce an assessment of the health of the entire fleet of assets, together with the concepts retained to prioritize the interventions on the distribution network equipment. The paper goes through the actual steps taken for the preparation and execution mode of the overall project. It covers the following project phases： definition of the problem ＆ business objectives, process definition and preparation tasks, presentation of solutions and execution phase. The project being still in the implementation phase, the conclusions are preliminary but already demonstrate concrete and tangible benefits.
文摘Performance characteristics data of solar photovoltaic （PV） cell/module are conventionally obtained under standard testing conditions. In the present work, the performance of PV modules under extreme temperatures and insolations experienced in State of Qatar was utilized to aid presenting a simplified characterization approach for the special case of arid environmental conditions. The chosen model was the well-known single diode model with both series and parallel resistors for greater accuracy. The modeling technique was validated by comparing the numerically calculated electrical characteristics with experimentally obtained data using two approaches： a single indoor fixed monocrystalline PV module inside a solar simulation chamber which physically simulated different weather scenarios by changing irradiation intensities and temperature, and a set of outdoor fixed polycrystalline PV modules. The result of the indoor experiment was presented in form of performance curves, and the outdoor experiment results in a monthly accumulated power production chart format. Both illustration types showed acceptable tolerance.
基金Supported by Traditional Chinese Medicine International Cooperation Project of State Administration of Traditional Chinese Medicine:1601500000027-[4]
文摘This paper presents an outline of the current status, regulations, and qualifications required for the practice of traditional Chinese medicine （TCM） and acupuncture in Qatar. The paper also provides an overview of the challenges and opportunities that face practitioners of Acupuncture as a complimentary medicine in Qatar and the recent licensing mechanisms introduced in January 2016. Qatar＇s 2030 vision and demand for continued development and sustainable growth includes the Chinese initiative ~One Belt, One Road＇ project which offers a golden opportunity for the further development of TCM in Qatar. The findings of this paper suggest that there are now real possibilities China and Qatar to cooperate in the exchange of medical services, training and education in the field of TCM.
文摘我迫切地想打开原书,忠实地将神圣的原文翻译成我喜爱的语言。——歌德《浮士德》第一部分第三场一贡布里希在一篇关于远东艺术的重要文章《欧洲接受远东艺术史纲要》1中提到基歇尔[Athanasius Kircher,1602-1680]2(图1)的《中国图说》[China Illustrata,1667]3(图2),称其广为人知,影响力大于卡尔塔里[Vincenzo Cartari,1531-1590]的《古代神祇图像》[Imagini colla sposizione degli dei degli antichi,1581],他是这样描述的:“它复制了一些中国的宗教绘画,其精确性令人惊讶,不过也有完全幻想的图画。”《中国图说》中包含了中国及远东的文字、建筑、风土人情、旅行路线等内容,其中有不少与宗教相关的版画,但有一组同题材的版画可能最能印证贡氏的概括。它们是关于菩萨的两幅图像,恰好一幅“精确性令人惊讶”,另一幅可谓“完全幻想的”。
