Lop Nur is located at the eastmost end of the Tarim Basin in Xinjiang,Northwestern China.This study reviews the hydrochemical characteristics and evolution of underground brine in Lop Nur,based on analytical data from...Lop Nur is located at the eastmost end of the Tarim Basin in Xinjiang,Northwestern China.This study reviews the hydrochemical characteristics and evolution of underground brine in Lop Nur,based on analytical data from 429 water samples(mainly brine).It is found that in the NE-SW direction,from the periphery to the Luobei sub-depression,while the hydrochemical type varies from the sodium sulfate subtype(S)to the magnesium sulfate subtype(M),the corresponding brine in the phase diagram transfers from the thenardite phase(Then)area,through the bloedite phase(Blo),epsomite phase(Eps),picromerite phase(Picro),finally reaching the sylvite phase(Syl)area.As for the degree of evolution,the sequence is the periphery<Luobei horizontally and the overlying glauberite brine<the underlying clastic brine vertically.It is concluded that the oxygen and hydrogen isotopic compositions of the brine have evidently been affected through the effects of evaporation and altitude,as well as the changes in local water circulation in recent years.Boron and chloride isotopic compositions show that the glauberite brine is formed under more arid conditions than the clastic one.The strontium isotopic composition indicates that the Lop Nur brine primarily originates from surface water;however,deep recharge may also be involved in the evolution of the brine,according to previous noble gas studies.It is confirmed that the brine in Lop Nur has become enriched with potassium prior to halite precipitation over the full course of the salt lake's evolution.Based on chemical compositions of brine from drillhole LDK01 and previous lithological studies,the evolution of the salt lake can be divided into three stages and it is inferred that the brine in Lop Nur may have undergone at least two significant concentration-dilution periods.展开更多
目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方...目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方法检测再生肝组织的形态学、血清学改变,以及相应基因的表达情况。结果PHx术后多个时间点KO组肝脏均出现组织坏死,KO组术后48 h、72 h的血清ALT均高于WT组(466.3±202.4 vs 72.0±58.8,486.2±156.3 vs 63.0±0.3,P<0.05)。凋亡细胞特异性染色示KO组术后3 h和48 h的凋亡细胞计数高于对照组(38.7±9.6 vs 2.8±0.2,87.3±19.4 vs 8.4±3.1,P<0.05)。PHx术后早期KO组肝脏的凋亡基因caspase-8与剪切caspase-3蛋白均上调。结论Nur77缺失诱导肝再生早期肝细胞凋亡。展开更多
Lop Nur potash mine greening projects is located in the heart of the Lop Nur, known as the ＂green zone ban＂. The project overcomes the extreme drought, high temperature, gale and dust salt and salt, and many other a...Lop Nur potash mine greening projects is located in the heart of the Lop Nur, known as the ＂green zone ban＂. The project overcomes the extreme drought, high temperature, gale and dust salt and salt, and many other adverse environmen- tal factors. Adopted the suitable salt improvement measures and management tech- nology, the artificial green has emerged in the sea of death. At the same time the greening project improved the office environment of mining area, and shaped ex- treme environment greening projects successful cases.展开更多
基金The Major Projects of Xinjiang Uyghur Autonomous Region of China(Grant Nos.2020A03005-2 and 2022A03009-2)from the Chinese governmentthe National Natural Science Foundation of China(Grant No.40830420)provided the funding for this study。
文摘Lop Nur is located at the eastmost end of the Tarim Basin in Xinjiang,Northwestern China.This study reviews the hydrochemical characteristics and evolution of underground brine in Lop Nur,based on analytical data from 429 water samples(mainly brine).It is found that in the NE-SW direction,from the periphery to the Luobei sub-depression,while the hydrochemical type varies from the sodium sulfate subtype(S)to the magnesium sulfate subtype(M),the corresponding brine in the phase diagram transfers from the thenardite phase(Then)area,through the bloedite phase(Blo),epsomite phase(Eps),picromerite phase(Picro),finally reaching the sylvite phase(Syl)area.As for the degree of evolution,the sequence is the periphery<Luobei horizontally and the overlying glauberite brine<the underlying clastic brine vertically.It is concluded that the oxygen and hydrogen isotopic compositions of the brine have evidently been affected through the effects of evaporation and altitude,as well as the changes in local water circulation in recent years.Boron and chloride isotopic compositions show that the glauberite brine is formed under more arid conditions than the clastic one.The strontium isotopic composition indicates that the Lop Nur brine primarily originates from surface water;however,deep recharge may also be involved in the evolution of the brine,according to previous noble gas studies.It is confirmed that the brine in Lop Nur has become enriched with potassium prior to halite precipitation over the full course of the salt lake's evolution.Based on chemical compositions of brine from drillhole LDK01 and previous lithological studies,the evolution of the salt lake can be divided into three stages and it is inferred that the brine in Lop Nur may have undergone at least two significant concentration-dilution periods.
文摘目的研究肝大部分切除术(PHx)后核受体Nur77调控肝细胞进入增殖周期的分子机制。方法在Nur77基因敲除型(knockout,KO)和野生型对照组中构建PHx诱导的小鼠肝再生模型,用组织学染色、生化、定量PCR以及蛋白免疫印迹(western-blot,WB)等方法检测再生肝组织的形态学、血清学改变,以及相应基因的表达情况。结果PHx术后多个时间点KO组肝脏均出现组织坏死,KO组术后48 h、72 h的血清ALT均高于WT组(466.3±202.4 vs 72.0±58.8,486.2±156.3 vs 63.0±0.3,P<0.05)。凋亡细胞特异性染色示KO组术后3 h和48 h的凋亡细胞计数高于对照组(38.7±9.6 vs 2.8±0.2,87.3±19.4 vs 8.4±3.1,P<0.05)。PHx术后早期KO组肝脏的凋亡基因caspase-8与剪切caspase-3蛋白均上调。结论Nur77缺失诱导肝再生早期肝细胞凋亡。
基金Supported by National Natural Science Foundation of China(31300449)Science and Technology Support Program of Xinjiang Uyghur Autonomous Region(201433101)+1 种基金Doctoral Fund in the West of China of the Chinese Academy of Sciences(XBBS201205)Major Science and Technology Program of Xinjiang Uyghur Autonomous Region(201130106-3)
文摘Lop Nur potash mine greening projects is located in the heart of the Lop Nur, known as the ＂green zone ban＂. The project overcomes the extreme drought, high temperature, gale and dust salt and salt, and many other adverse environmen- tal factors. Adopted the suitable salt improvement measures and management tech- nology, the artificial green has emerged in the sea of death. At the same time the greening project improved the office environment of mining area, and shaped ex- treme environment greening projects successful cases.
