It was more than 40 years ago, as a first-year Urology resident, that I performed my first varicocele ligation （a palomo procedure under the watchful eye and able hands of my staff physician. I dutifully read all I c...It was more than 40 years ago, as a first-year Urology resident, that I performed my first varicocele ligation （a palomo procedure under the watchful eye and able hands of my staff physician. I dutifully read all I could the night before the procedure and became familiar with the names of Barfield, Macomber and Sanders, Tulloch, MacLeod, Ivanissevich, Palomo, Amelar and Dubin and others who had written about varicoceles being associated with abnormal semen parameters and a potentially surgically correctable cause of male infertility.展开更多
Natural resources and the environment have always been and will continue to be the key factors determining human development and the quality of life.Throughout the 20th century,the rapid development of human societies...Natural resources and the environment have always been and will continue to be the key factors determining human development and the quality of life.Throughout the 20th century,the rapid development of human societies has led to growing impacts on nature and the natural resource base.Global ecological,environmental and socioeconomic展开更多
The Qinghai-Tibet plateau is a fast uplifting area that constitutes the world＇s highest and thickest, and newest piece of continental plate which has unusual geometric configurations and landscapes. The Qinghai-Tibet...The Qinghai-Tibet plateau is a fast uplifting area that constitutes the world＇s highest and thickest, and newest piece of continental plate which has unusual geometric configurations and landscapes. The Qinghai-Tibet plateau consists of multiple terranes, with a complex geological history, including the evo- lution of the Tethys Ocean basin, the convergence of terranes and island arcs, multiple subductions, multiple collisions and multiple orogens, over a long period of action of continental dynamic processes. Before the Indian and the Asian plates collided, during the Early Paleozoic, it was already a large orogen and terrane collision complex. As a result of the collision of the Indian and Asian plates, the fast uplift of Qinghai- Tibet plateau became the most magnificent event on the earth during the Cenozoic. It formed a vast, seemingly boundless high plateau with borders consisting of mountain chains with very high peaks, and steep gorges.展开更多
China has 46 377 glaciers with a total area of 59 425 km2, which accounts for 11%-14.5% of the total area of mountain glaciers in the world. As one of the largest mountain ranges in Central Asia and Northwest China, t...China has 46 377 glaciers with a total area of 59 425 km2, which accounts for 11%-14.5% of the total area of mountain glaciers in the world. As one of the largest mountain ranges in Central Asia and Northwest China, the Tianshan contains 15 935 glaciers with a total area of 15 416 km2. These glaciers are a vital source of water for more than 100 million people and for wildlife ecosystems in this vast arid and semi-arid land. Urumqi Glacier No. 1, the best monitored glacier in China, is located at the headwaters of the Urumqi River in eastern Tianshan and is within the core area of Central Asia.展开更多
This article serves as the introduction and overview to the Journal of Earth Science＇s special issue concerning unconven- tional oil and gas resources, compiled in October 2017. The compilation includes 17 articles a...This article serves as the introduction and overview to the Journal of Earth Science＇s special issue concerning unconven- tional oil and gas resources, compiled in October 2017. The compilation includes 17 articles addressing diverse topics re- lated to unconventional oil and gas resources that were pub- lished by Journal of Earth Science （YES）. Each article included in the compilation represents a stand-alone analysis and re- search on a relevant topic that has passed the journal＇s rigorous peer-review editorial system. Collectively, these articles pro- vide key insight to the progress being made towards better understanding of new techniques in unconventional oil and gas resources.展开更多
The concept of water mass was carried within the early development ofoceanography and the analysis of water mass has so far become one of theimportant subjects of physical oceanography. The formation and charactersof ...The concept of water mass was carried within the early development ofoceanography and the analysis of water mass has so far become one of theimportant subjects of physical oceanography. The formation and charactersof ocean water mass are described and discussed at length in many famousbooks and classical textbooks on physical oceanography, such as "The Oceans"展开更多
In recent years,China has experienced unprecedented expansion in its econo-my,which has resulted in rapid development of its culture,education andtechnology through implementing the policy of reform and opening initia...In recent years,China has experienced unprecedented expansion in its econo-my,which has resulted in rapid development of its culture,education andtechnology through implementing the policy of reform and opening initiated byDeng Xiaoping.The development of science and technology has promoted thelevel of the productive force and the great achievements in China have become oneof the focuses of the world.Enhancements of science and technology in the coun-try and active external communication have raised the international status of Chi-展开更多
文摘It was more than 40 years ago, as a first-year Urology resident, that I performed my first varicocele ligation （a palomo procedure under the watchful eye and able hands of my staff physician. I dutifully read all I could the night before the procedure and became familiar with the names of Barfield, Macomber and Sanders, Tulloch, MacLeod, Ivanissevich, Palomo, Amelar and Dubin and others who had written about varicoceles being associated with abnormal semen parameters and a potentially surgically correctable cause of male infertility.
文摘Natural resources and the environment have always been and will continue to be the key factors determining human development and the quality of life.Throughout the 20th century,the rapid development of human societies has led to growing impacts on nature and the natural resource base.Global ecological,environmental and socioeconomic
文摘The Qinghai-Tibet plateau is a fast uplifting area that constitutes the world＇s highest and thickest, and newest piece of continental plate which has unusual geometric configurations and landscapes. The Qinghai-Tibet plateau consists of multiple terranes, with a complex geological history, including the evo- lution of the Tethys Ocean basin, the convergence of terranes and island arcs, multiple subductions, multiple collisions and multiple orogens, over a long period of action of continental dynamic processes. Before the Indian and the Asian plates collided, during the Early Paleozoic, it was already a large orogen and terrane collision complex. As a result of the collision of the Indian and Asian plates, the fast uplift of Qinghai- Tibet plateau became the most magnificent event on the earth during the Cenozoic. It formed a vast, seemingly boundless high plateau with borders consisting of mountain chains with very high peaks, and steep gorges.
基金supports from the National Natural Science Foundation of China (Nos. 40631001, 91025012) are greatly appreciated
文摘China has 46 377 glaciers with a total area of 59 425 km2, which accounts for 11%-14.5% of the total area of mountain glaciers in the world. As one of the largest mountain ranges in Central Asia and Northwest China, the Tianshan contains 15 935 glaciers with a total area of 15 416 km2. These glaciers are a vital source of water for more than 100 million people and for wildlife ecosystems in this vast arid and semi-arid land. Urumqi Glacier No. 1, the best monitored glacier in China, is located at the headwaters of the Urumqi River in eastern Tianshan and is within the core area of Central Asia.
文摘This article serves as the introduction and overview to the Journal of Earth Science＇s special issue concerning unconven- tional oil and gas resources, compiled in October 2017. The compilation includes 17 articles addressing diverse topics re- lated to unconventional oil and gas resources that were pub- lished by Journal of Earth Science （YES）. Each article included in the compilation represents a stand-alone analysis and re- search on a relevant topic that has passed the journal＇s rigorous peer-review editorial system. Collectively, these articles pro- vide key insight to the progress being made towards better understanding of new techniques in unconventional oil and gas resources.
文摘The concept of water mass was carried within the early development ofoceanography and the analysis of water mass has so far become one of theimportant subjects of physical oceanography. The formation and charactersof ocean water mass are described and discussed at length in many famousbooks and classical textbooks on physical oceanography, such as "The Oceans"
文摘In recent years,China has experienced unprecedented expansion in its econo-my,which has resulted in rapid development of its culture,education andtechnology through implementing the policy of reform and opening initiated byDeng Xiaoping.The development of science and technology has promoted thelevel of the productive force and the great achievements in China have become oneof the focuses of the world.Enhancements of science and technology in the coun-try and active external communication have raised the international status of Chi-
