The SCAR XIV International Symposium on Antarctic Earth Sciences(ISAES), which has been held every four years, will be held in Punta Arenas, Chile from 18 to 25 August 2025. ISAES aims to provide a comprehensive overv...The SCAR XIV International Symposium on Antarctic Earth Sciences(ISAES), which has been held every four years, will be held in Punta Arenas, Chile from 18 to 25 August 2025. ISAES aims to provide a comprehensive overview of the current state of Antarctic Earth Sciences. The XIV ISAES calls for researchers from around the globe to share their latest research and insights on the Antarctic region's geology, climate, and ecosystems.展开更多
The multi-configuration Dirac-Fock method is employed to calculate the transition energies, probabilities, and oscillator strengths for electric dipole allowed （El） and forbidden （M1, E2, M2） lines for the 3s^23p,...The multi-configuration Dirac-Fock method is employed to calculate the transition energies, probabilities, and oscillator strengths for electric dipole allowed （El） and forbidden （M1, E2, M2） lines for the 3s^23p, 3s3p^2, 3s^23d, 3p^3, and 3s3p3d configurations of Fe XIV. The lifetimes of all 40 levels of these low-lying configurations are also derived. The valence valence and core-valence correlation effects are accounted for in a systematic way. Breit interactions and quantum electrodynamics （QED） effects are estimated in subsequent relativistic configuration interaction （CI） calculations. The present results are in good agreement with other available theoretical and experimental values, and therefore can be used for the further astrophysical investigations.展开更多
The ＂XIV International Symposium on Iron Nutrition and Interactions in Plants＂ （14th ISINIP） will be held in Beijing, China, on 11-15 October 2008. It will be held together with the Annual Meeting of HarvestPlus-C...The ＂XIV International Symposium on Iron Nutrition and Interactions in Plants＂ （14th ISINIP） will be held in Beijing, China, on 11-15 October 2008. It will be held together with the Annual Meeting of HarvestPlus-China. The joint symposium will provide opportunities to scientists from soil sciences, plant nutrition, plant breeding, animal and human nutrition around the world to communicate their new results and experiences in studying iron nutrition of plants, animal and human for a better understanding of the mechanisms of iron from soils, over plants to animals and human beings. The scientific topics of the symposium are as follows：展开更多
Cheng Guodong Cheng Guodong is a research professor at the Lanzhou Institute of Glaciology & Cryopedology, an affiliate to the CAS. A major in hydrogeology and engineering geology when studying in the Beijing Coll...Cheng Guodong Cheng Guodong is a research professor at the Lanzhou Institute of Glaciology & Cryopedology, an affiliate to the CAS. A major in hydrogeology and engineering geology when studying in the Beijing College of Geology, Prof. Cheng started his life-long career of a permafrost specialist after having left the campus in 1965. His research work is almost entirely carried out on the Qinghai-Tibet Plateau, covering the following three aspects: 1. Contributions to several key engineering projects in permafrost regions. At present, China has not set up standardized norms for geological surveys, engineering design and construction展开更多
Abnormal accumulation of collagen fibrils is a hallmark feature of oral submucous fibrosis(OSF).However,the precise characteristics and underlying mechanisms remain unclear,impeding the advancement of potential therap...Abnormal accumulation of collagen fibrils is a hallmark feature of oral submucous fibrosis(OSF).However,the precise characteristics and underlying mechanisms remain unclear,impeding the advancement of potential therapeutic approaches.Here,we observed that collagen Ⅰ,the main component of the extracellular matrix,first accumulated in the lamina propria and subsequently in the submucosa of OSF specimens as the disease progressed.Using RNA-seq and Immunofluorescence in OSF specimens,we screened the cartilage oligomeric matrix protein(COMP)responsible for the abnormal collagen accumulation.Genetic COMP deficiency reduced arecoline-stimulated collagen I deposition significantly in vivo.In comparison,both COMP and collagen Ⅰ were upregulated under arecoline stimulation in wild-type mice.Human oral buccal mucosal fibroblasts(hBMFs)also exhibited increased secretion of COMP and collagen I after stimulation in vitro.COMP knockdown in hBMFs downregulates arecoline-stimulated collagen Ⅰ secretion.We further demonstrated that hBMFs present heterogeneous responses to arecoline stimulation,of which COMP-positive fibroblasts secrete more collagen Ⅰ.Since COMP is a molecular bridge with Fibril-associated collagens with Interrupted Triple helices(FACIT)in the collagen network,we further screened and identified collagen XIV,a FACIT member,co-localizing with both COMP and collagen Ⅰ.Collagen XIV expression increased under arecoline stimulation in wild-type mice,whereas it was hardly expressed in the Comp^(-/-) mice,even with under stimulation.In summary,we found that COMP may mediates abnormal collagen Ⅰ deposition by functions with collagen XIV during the progression of OSF,suggesting its potential to be targeted in treating OSF.展开更多
I have never had much patience with thewriters who claim from the reader an effort to under-stand their meaning. You have only to go tothe great philosophers to see that it is possibleto express with lucidity the most...I have never had much patience with thewriters who claim from the reader an effort to under-stand their meaning. You have only to go tothe great philosophers to see that it is possibleto express with lucidity the most subtle reflections.You may find it difficult to understand the thoughtof Hume, and if you have no philosophical train-ing its implications will doubtless escape you;but no one with any education at all can fail tounderstand exactly what the meaning of each sen-tence is. Few people have written English withmore grace than Berkeley. There are two sortsof obscurity that you find in writers. One展开更多
文摘The SCAR XIV International Symposium on Antarctic Earth Sciences(ISAES), which has been held every four years, will be held in Punta Arenas, Chile from 18 to 25 August 2025. ISAES aims to provide a comprehensive overview of the current state of Antarctic Earth Sciences. The XIV ISAES calls for researchers from around the globe to share their latest research and insights on the Antarctic region's geology, climate, and ecosystems.
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 10876028,10847007,and 10964010)the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070736001)
文摘The multi-configuration Dirac-Fock method is employed to calculate the transition energies, probabilities, and oscillator strengths for electric dipole allowed （El） and forbidden （M1, E2, M2） lines for the 3s^23p, 3s3p^2, 3s^23d, 3p^3, and 3s3p3d configurations of Fe XIV. The lifetimes of all 40 levels of these low-lying configurations are also derived. The valence valence and core-valence correlation effects are accounted for in a systematic way. Breit interactions and quantum electrodynamics （QED） effects are estimated in subsequent relativistic configuration interaction （CI） calculations. The present results are in good agreement with other available theoretical and experimental values, and therefore can be used for the further astrophysical investigations.
文摘The ＂XIV International Symposium on Iron Nutrition and Interactions in Plants＂ （14th ISINIP） will be held in Beijing, China, on 11-15 October 2008. It will be held together with the Annual Meeting of HarvestPlus-China. The joint symposium will provide opportunities to scientists from soil sciences, plant nutrition, plant breeding, animal and human nutrition around the world to communicate their new results and experiences in studying iron nutrition of plants, animal and human for a better understanding of the mechanisms of iron from soils, over plants to animals and human beings. The scientific topics of the symposium are as follows：
文摘Cheng Guodong Cheng Guodong is a research professor at the Lanzhou Institute of Glaciology & Cryopedology, an affiliate to the CAS. A major in hydrogeology and engineering geology when studying in the Beijing College of Geology, Prof. Cheng started his life-long career of a permafrost specialist after having left the campus in 1965. His research work is almost entirely carried out on the Qinghai-Tibet Plateau, covering the following three aspects: 1. Contributions to several key engineering projects in permafrost regions. At present, China has not set up standardized norms for geological surveys, engineering design and construction
基金supported by the National Natural Science Foundation of China grant(81974150).
文摘Abnormal accumulation of collagen fibrils is a hallmark feature of oral submucous fibrosis(OSF).However,the precise characteristics and underlying mechanisms remain unclear,impeding the advancement of potential therapeutic approaches.Here,we observed that collagen Ⅰ,the main component of the extracellular matrix,first accumulated in the lamina propria and subsequently in the submucosa of OSF specimens as the disease progressed.Using RNA-seq and Immunofluorescence in OSF specimens,we screened the cartilage oligomeric matrix protein(COMP)responsible for the abnormal collagen accumulation.Genetic COMP deficiency reduced arecoline-stimulated collagen I deposition significantly in vivo.In comparison,both COMP and collagen Ⅰ were upregulated under arecoline stimulation in wild-type mice.Human oral buccal mucosal fibroblasts(hBMFs)also exhibited increased secretion of COMP and collagen I after stimulation in vitro.COMP knockdown in hBMFs downregulates arecoline-stimulated collagen Ⅰ secretion.We further demonstrated that hBMFs present heterogeneous responses to arecoline stimulation,of which COMP-positive fibroblasts secrete more collagen Ⅰ.Since COMP is a molecular bridge with Fibril-associated collagens with Interrupted Triple helices(FACIT)in the collagen network,we further screened and identified collagen XIV,a FACIT member,co-localizing with both COMP and collagen Ⅰ.Collagen XIV expression increased under arecoline stimulation in wild-type mice,whereas it was hardly expressed in the Comp^(-/-) mice,even with under stimulation.In summary,we found that COMP may mediates abnormal collagen Ⅰ deposition by functions with collagen XIV during the progression of OSF,suggesting its potential to be targeted in treating OSF.
文摘I have never had much patience with thewriters who claim from the reader an effort to under-stand their meaning. You have only to go tothe great philosophers to see that it is possibleto express with lucidity the most subtle reflections.You may find it difficult to understand the thoughtof Hume, and if you have no philosophical train-ing its implications will doubtless escape you;but no one with any education at all can fail tounderstand exactly what the meaning of each sen-tence is. Few people have written English withmore grace than Berkeley. There are two sortsof obscurity that you find in writers. One
