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| 1 | Translocation of mixed lineage kinase domain-like protein to plasma membrane leads to necrotic cell death显示文摘混合的系 kinase 像域的蛋白质(MLKL ) 被识别受体交往下游地工作蛋白质 3 (RIP3 ) 在肿瘤坏死 factor-α(TNF ) 导致了坏死(也叫的 necroptosis ) 。然而, MLKL 怎么工作调停 necroptosis 是未知的。由在 MLKL 大美人房间的 MLKL 功能的宪法,我们证明 MLKL 的 N 终点在 necroptosis 为它的功能被要求。在对待 TNF 的房间的 MLKL 的 oligomerization 为 necroptosis 是必要的,当人工地由使用荷尔蒙绑定领域一起强迫 MLKL (HBD*) 扳机 necroptosis。尤其是,一起强迫 N 终端领域(ND ) 然而并非 MLKL 的 C 终端 kinase 领域引起 necroptosis。进一步的删除分析证明 four-α MLKL (1-130 氨基酸) 的螺旋捆是足够的触发 necroptosis。两 HBD*调停并且 MLKL (ND ) 或 MLKL 的导致 TNF 的建筑群是到血浆膜的类脂化合物椽子的这些建筑群的 tetramers,和 translocation 先于房间死亡。homo-oligomerization 为 MLKL translocation 被要求,为血浆膜地点的信号顺序位于第一和第二 α 的连接; MLKL 的 -helices。MLKL 或 MLKL (ND ) 的血浆膜 translocation 导致钠流入,并且从房间文化媒介的钠的弄空禁止 necroptosis。上述所有现象没在 apoptosis 被看见。因此, MLKL oligomerization 导致 MLKL 的 translocation 到血浆膜,和血浆膜的类脂化合物椽子由自己或经由到增加的另外的蛋白质的 MLKL 复杂行为任何一个钠流入,增加渗透的压力,最后导致膜破裂。 | Xin Chen Wenjuan Li Junming Ren Deli Huang Wan-ting He Yunlong Song Chao Yang Wanyun Li Xinru Zheng PengdaChen Jiahuai Han | 2014 | Cell Research2014,24,1: | 67 |
| 2 | DNA image cytometry test for primary screening of esophageal cancer: a population-based multi-center study in high-risk areas in China显示文摘Objective: To evaluate the feasibility of DNA image cytometry(DNA-ICM) as a primary screening method for esophageal squamous cell cancer(ESCC).Methods: A total of 5,382 local residents aged 40–69 years from three high-risk areas in China(Linzhou in Henan province, Feicheng in Shandong province and Cixian in Hebei province) from 2008 to 2011 were recruited in this population-based screening study. And 2,526 subjects declined to receive endoscopic biopsy examination with Lugol's iodine staining, while 9 and 815 subjects were excluded from liquid-based cytology and DNA-ICM test respectively due to slide quality. Finally, 2,856, 5,373 and 4,567 subjects were enrolled in the analysis for endoscopic biopsy examination, liquid-based cytology and DNA-ICM test, respectively. Sensitivity(SE), specificity(SP), negative predictive values(NPV) and positive predictive values(PPV) as well as their 95% confidence intervals(95% CI) for DNA-ICM, liquid-based cytology and the combination of the two methods were calculated. Receiver operating characteristic(ROC) curves were applied to determine the cutoff point of DNA-ICM for esophageal cancer.Results: DNA-ICM results were significantly correlative with esophageal cancer and precancer lesions(χ~2=18.016, P<0.001). The cutoff points were 5,802, 5,803 and 8,002 based on dissimilar pathological types of low grade intraepithelial neoplasia(LGIN), high grade intraepithelial neoplasia(HGIN), and ESCC, respectively, and 5,803 was chosen in this study considering the SE and SP. The SE, SP, PPV, NPV of DNA-ICM test(cutoff point 5,803) combined with liquid-based cytology [threshold atypical squamous cells of undetermined significance(ASCUS)] were separately 72.1%(95% CI: 70.3%-73.9%), 43.3%(95% CI: 41.3%-45.3%), 22.8%(95% CI: 21.1%-24.5%) and 87.0%(95% CI: 85.7%-88.3%) for LGIN, 85.7%(95% CI: 84.3%-87.1%), 41.3%(95% CI: 39.3%-43.3%), 4.6%(95% CI: 3.8%-5.4%) and 98.9%(95% CI: 98.5%-99.3%) for HGIN, and 96.0%(95% CI: 95.2%-96.8%), 40.8%(95% CI: 38.8%-42.8%), 1.7%(95% CI: 1.2%-2.2%) and 99.9%(95% CI: 99.8%-100.0%) for ESCC.Conclusions: It is possible to use DNA-ICM test as a primary screening method before endoscopic screening for esophageal cancer. | Meng Wang Changqing Hao Qing Ma Guohui Song Shanrui Ma Deli Zhao Lin Zhao Xinqing Li Wenqiang Wei | 2016 | Chinese Journal of Cancer Research2016,28,4: | 15 |
| 3 | A Review on Rill Erosion Process and Its Influencing Factors显示文摘Rills are frequently observed on slope farmlands and rill erosion significantly contributes to sediment yields. This paper focuses on reviewing the various factors affecting rill erosion processes and the threshold conditions of rill initiation. Six factors, including rainfall, runoff, soil, topography, vegetation and tillage system, are discussed. Rill initiation and network are explored. Runoff erosivity and soil erodibility are recognized as two direct factors affecting rill erosion and other types of factors may have indirect influences on rill erosion through increasing or decreasing the effects of the direct factors. Certain conditions are necessary for rill initiation and the critical conditions are different with different factors. Future studies should be focused on 1) the dynamic changes of rill networks; 2) the combined effect of multiple factors; and 3) the relationships of threshold values with other related factors. | SUN Liying FANG Haiyan QI Deli LI Junlan CAI Qiangguo | 2013 | Chinese Geographical Science2013,23,4: | 11 |
| 4 | Space-confined vapor deposition synthesis of two dimensional materials显示文摘 | Shasha Zhou Lin Gan Deli Wang Huiqiao Li Tianyou Zhai | 2018 | Nano Research2018,11,6: | 9 |
| 5 | Clinical practices s of Traditional Chinese Medicine for acute upper respiratory tract infection in children显示文摘OBJECTIVE:To develop Clinical practice s of Traditional Chinese Medicine(TCM) for acute upper respiratory tract infection(AURI) in children;TCM is usedalone or administered together with antibiotics.METHODS:Under the guidance of evidence-based medicine concept,in strict accordance with the rules of international s development,as well as on the basis of evidence of clinical research of TCM,the s solicited opinions from clinical experts and methodologists in TCM and Western Medicine.GRADE standard was applied to form experts' consensus.RESULTS:The s standardized classification of TCM patterns and TCM treatments in children with AURI,including prescription,Chinese patent medicine,non-drug treatment and prevention.CONCLUSION:Follows the principle of 'evidence based,consensus supplemented,and experience referred',these s were formulated,but the quality of evidence of included studies were relatively low.Further refinement of the s should be needed as deeper clinical studies as available in future. | Rong Ping Li Li Zhang Xilian Liu Quanhui Yan Huimin Xin Deli Xue Zheng Ren Xianqing Wu Zhenqi Ma Rong Zhang Junhua | 2018 | Journal of Traditional Chinese Medicine2018,38,4: | 7 |
| 6 | Digital synthesis of histological stains using micro-structured and multiplexed virtual staining of label-free tissue显示文摘Histological staining is a vital step in diagnosing various diseases and has been used for more than a century to provide contrast in tissue sections,rendering the tissue constituents visible for microscopic analysis by medical experts.However,this process is time consuming,labour intensive,expensive and destructive to the specimen.Recently,the ability to virtually stain unlabelled tissue sections,entirely avoiding the histochemical staining step,has been demonstrated using tissue-stain-specific deep neural networks.Here,we present a new deep-learning-based framework that generates virtually stained images using label-free tissue images,in which different stains are merged following a micro-structure map defined by the user.This approach uses a single deep neural network that receives two different sources of information as its input:(1)autofluorescence images of the label-free tissue sample and(2)a“digital staining matrix”,which represents the desired microscopic map of the different stains to be virtually generated in the same tissue section.This digital staining matrix is also used to virtually blend existing stains,digitally synthesizing new histological stains.We trained and blindly tested this virtual-staining network using unlabelled kidney tissue sections to generate micro-structured combinations of haematoxylin and eosin(H&E),Jones’silver stain,and Masson’s trichrome stain.Using a single network,this approach multiplexes the virtual staining of label-free tissue images with multiple types of stains and paves the way for synthesizing new digital histological stains that can be created in the same tissue cross section,which is currently not feasible with standard histochemical staining methods. | Yijie Zhang Kevin de Haan Yair Rivenson Jingxi Li Apostolos Delis Aydogan Ozcan | 2020 | Light(Science & Applications)2020,9,1: | 7 |
| 7 | Characteristics of Upper Mantle Activity in the South China Sea Region and the Indochina Mantle Plume显示文摘According to computed results of the mantle traction field beneath the lithosphere based on satellite-modelled gravity anomalies of different degrees, it has been revealed that the three types of mantle convection on different scales existing in the South China Sea region is the key factor controlling the geodynamics. The mantle convection models on large and middle scales have been proved by natural seismic S-wave tomographic data and interpreted by using the present mantle plume concept In consideration of other relevant geological and geophysical data, the authors put emphasis on discussing the expression form, origin and age of the Indochina mantle plume and its important effect on the conversion of organic matter and hydrocarbon accumulation in Cenozoic basins. | WU Nengyou ZENG Weijun LI Zhenwu CHEN Yizhong WEN Xiwen DU Deli LI Guosheng | 1999 | Acta Geologica Sinica(English Edition)1999,73,4: | 6 |
| 8 | Kinetics and mechanisms of p-nitrophenol biodegradation by Pseudomonas aeruginosa HS-D38显示文摘The kinetics and mechanisms of p-nitrophenol(PNP)biodegradation by Pseudomonas aeruginosa HS-D38 were investigated. PNP could be used by HS-D38 strain as the sole carbon,nitrogen and energy sources,and PNP was mineralized at the maximum concentration of 500 mg/L within 24 h in an mineral salt medium(MSM).The analytical results indicated that the biodegradation of PNP fit the first order kinetics model.The rate constant kPNP is 2.039×10-2/h in MSM medium,KPNP+N is 3.603×10-2/h with the addition of ammonium chloride and KPNP+C is 9.74×10-3/h with additional glucose.The addition of ammonium chloride increased the degradation of PNP.On the contrary,the addition of glucose inhibited and delayed the biodegradation of PNP.Chemical analysis results by thin-layer chromatography(TLC),UV-Vis spectroscopy and gas chromatography(GC)techniques suggested that PNP was converted to hydroquinone(HQ)and further degraded via 1,2,4-benzenetriol(1,2,4-BT)pathway. | ZHENG Yongliang LIU Deli LIU Shiwang XU Shangying YUAN Yongze XIONG Li | 2009 | Journal of Environmental Sciences2009,21,9: | 6 |
| 9 | Mitochondrial uncoupler BAM15 inhibits artery constriction and potently activates AMPK in vascular smooth muscle cells显示文摘Our previous studies found that mitochondrial uncouplers CCCP and niclosamide inhibited artery constriction and the mechanism involved AMPK activation in vascular smooth muscle cells. BAM15 is a novel type of mitochondrial uncoupler. The aim of the present study is to identify the vasoactivity of BAM15 and characterize the BAM15-induced AMPK activation in vascular smooth muscle cells(A10 cells). BAM15 relaxed phenylephrine(PE)-induced constricted rat mesenteric arteries with intact and denuded endothelium. Pretreatment with BAM15 inhibited PEinduced constriction of rat mesenteric arteries with intact and denuded endothelium. BAM15, CCCP,and niclosamide had the comparable IC50 value of vasorelaxation in PE-induced constriction of rat mesenteric arteries. BAM15 was less cytotoxic in A10 cells compared with CCCP and niclosamide.BAM15 depolarized mitochondrial membrane potential, induced mitochondrial fission, increased mitochondrial ROS production, and increased mitochondrial oxygen consumption rate in A10 cells.BAM15 potently activated AMPK in A10 cells and the efficacy of BAM15 was stronger than that of CCCP, niclosamide, and AMPK positive activators metformin and AICAR. In conclusion, BAM15 activates AMPK in vascular smooth muscle cells with higher potency than that of CCCP, niclosamide and the known AMPK activators metformin and AICAR. The present work indicates that BAM15 is a potent AMPK activator. | Yu Tai Lanjun Li Xuan Peng Junxue Zhu Xihai Mao Nan Qin Minghui Ma Rong Huo Yunlong Bai Deli Dong | 2018 | Acta Pharmaceutica Sinica B2018,8,6: | 5 |
| 10 | Regulation of cellular senescence by the essential caveolar component PTRF/Cavin-1显示文摘聚合酶我和抄本版本因素(PTRF,也作为 Cavin-1 知道) 是在 caveolae 的生物的续生说和功能的一个必要部件。这里,我们证明那 PTRF 表情在衰老的人的成纤维细胞被增加。重要地, PTRF 的 overexpression 导致了细胞的老朽特征的特征,而减少的 PTRF 表示扩大了细胞的 replicative lifespan。有趣地,我们在细胞的老朽期间首先发现那 PTRF 局部性到年轻、静止的 WI-38 人的成纤维细胞,而是 translocated 的原子核到 cytosol 和血浆膜。而且,显微镜的分析表明了的电子 caveolar 结构在的一个增加的数字衰老并且 PTRF-transfected WI-38 房间。我们的数据建议在细胞的老朽的 PTRF 的角色依赖于它指向到有 caveolin-1 的 caveolae 和它的相互作用,它看起来被 PTRF 的 phosphorylation 调整。一起拿,我们的调查结果作为通过 p53/p21 和 caveolar 小径行动的细胞的老朽的一个新奇管理者识别 PTRF。 | Lin Bai Xiaoli Deng Juanjuan Li Miao Wang Qian Li Wei An Deli A Yu-Sheng Cong | 2011 | Cell Research2011,21,7: | 5 |
| 11 | Arterial relaxation is coupled to inhibition of mitochondrial fission in arterial smooth muscle cells:comparison of vasorelaxant effects of verapamil and phentolamine显示文摘Mitochondria are morphologically dynamic organelles which undergo fission and fusion processes. Our previous study found that arterial constriction was always accompanied by increased mitochondrial fission in smooth muscle cells, whereas inhibition of mitochondrial fission in smooth muscle cells was associated with arterial relaxation. Here, we used the typical vasorelaxants, verapamil and phentolamine, to further confirm the coupling between arterial constriction and mitochondrial fission in rat aorta. Results showed that phentolamine but not verapamil induced vasorelaxation in phenylephrine(PE)-induced rat thoracic aorta constriction. Verapamil, but not phentolamine, induced vasorelaxation in high K^+(KPSS)-induced rat thoracic aorta constriction. Pre-treatment with phentolamine prevented PEbut not KPSS-induced aorta constriction and pre-treatment with verapamil prevented both PE-and KPSSinduced aorta constriction. Transmission electron microscopy(TEM) results showed that verapamil but not phentolamine inhibited KPSS-induced excessive mitochondrial fission in aortic smooth muscle cells,and verapamil prevented both PE-and KPSS-induced excessive mitochondrial fission in aortic smoothmuscle cells. Verapamil inhibited KPSS-induced excessive mitochondrial fission in cultured vascular smooth muscle cells(A10). These results further demonstrate that arterial relaxation is coupled to inhibition of mitochondrial fission in arterial smooth muscle cells. | Jing Jin Xin Shen Yu Tai Shanliang Li Mingyu Liu Changlin Zhen Xiuchen Xuan Xiyue Zhang Nan Hu Xinzi Zhang Deli Dong | 2017 | Acta Pharmaceutica Sinica B2017,7,3: | 5 |
| 12 | Seed dormancy and germination characteristics of two Rheum species in the Himalaya-Hengduan Mountains显示文摘Seed dormancy and germination characteristics are important factors determining plant reproductive success, and may be expected to have a major influence on plant distribution. In this study, we aimed to explore the characteristics of seed dormancy and germination in two endemic Rheum species(Rheum nobile and Rheum alexandrae) in the Himalaya-Hengduan Mountains. To determine the type of dormancy,fresh seeds of the two species(one population each) were incubated in light at 25/15 and 15/5℃, and then dry after-ripening(DAR) seeds were incubated on water agar substrate with or without GA_3. To determine the effect of temperature and light on germination, DAR seeds of the two species(two populations each) were incubated both in the light and in the dark at several temperatures, including constant and alternating temperatures. Base temperature(T_b) and thermal times for 50% germination(θ_(50)) were calculated. DAR released physiological dormancy(PD), increasing final germination at 15/5℃ and widening the range of germination temperatures from higher to lower, indicative of type 2 non-deep PD for the two Rheum species. Light had no significant effect on germination of seeds from the two species(two populations each). Seeds of the two species germinated significantly better(>80%) at medium temperatures(10-25℃) than at extreme low(5℃) or high(35℃) temperatures. Alternating temperatures(25/15 and 15/5℃) did not significantly increase the final germination of the two species either in the light and in the dark, but it promoted seed germination more quickly than corresponding constant temperatures in the light in both Rh. alexandrae populations, especially at 15/5℃. Germination in response to temperature was well described by the thermal-time model at suboptimal temperatures. The estimated Tbvalues were 1 and 0.9℃, respectively, in two Rh. nobile populations; 4 and 4.1℃,respectively, in two Rh. alexandrae populations; θ_(50)(thermal time) were 100 and 125℃d, respectively in two Rh. nobile populations; 76.92 and 83.33℃d, respectively in two Rh. alexandrae populations. The dormancy type, and germination responses to temperature and light condition does not explain why the two Rheum species are distributed in contrasting habitats. However, these findings reflect an advantageous germination strategy of these two Rheum species to adapt to the same alpine environments. | Deli Peng Zhe Chen Xiaojian Hu Zhimin Li Bo Song Hang Sun | 2017 | Plant Diversity2017,39,4: | 4 |
| 13 | Function of male and hermaphroditic flowers and size-dependent gender diphasy of Lloydia oxycarpa (Liliaceae) from Hengduan Mountains显示文摘Although hermaphroditism is common in flowering plants, unisexual flowers occur in many plant taxa,forming various sexual systems. However, the sexual system of some plants is difficult to determine morphologically, given that their sex expression may be influenced by both genetic and environmental factors. Specifically, androdioecy(the coexistence of both male and hermaphroditic individuals in the same population) has often been confused with the gender diphasy, a gender strategy in which plants change their sex expression between seasons. We studied the reproductive function of male and hermaphroditic flowers of Lloydia oxycarpa(Liliaceae), in order to investigate its sexual system and determine whether it is a gender-diphasic species. We found that although male flowers occur in a considerable number of plants, relative to hermaphrodites, they did not exhibit any significant reproductive advantage in terms of flower size, pollen quantity, attractiveness to visitors or siring success. In addition, this plant has spontaneous self-pollination and showed no inbreeding depression. These results render the maintenance of male individuals almost impossible. Furthermore, a considerable number of individuals changed their sex in successive years. The sex expression was found to be related to bulb size and dry weight, with larger individuals producing hermaphroditic flowers and smaller individuals producing male flowers. These results suggest that L. oxycarpa is not an androdioecious plant but represents a rare case of size-dependent gender diphasy. | Yang Niu Qiangbang Gong Deli Peng Hang Sun Zhimin Li | 2017 | Plant Diversity2017,39,4: | 3 |
| 14 | Measurement and Scaling of Mercury on Soil and Air in a Historical Artisanal Gold Mining Area in Northeastern China显示文摘The Jiapigou gold mine area, located in the upper reaches of the Songhua River, was the first and largest artisanal gold mine once in China, and it used to be prominent in two marking years(1870 and 1974). Jiapigou area had a gold mining history of more than 190 years, which was first opened in 1820. Gold extraction with algamation was applied as the dominant method of excavation from 1940 to 2008, and a total of more than 100 t of gold were extracted from the mine using this method and it was estimated that 100–200 t Hg were released, thus causing severe mercury environmental pollution in the mining area. In the experimental campaigns of this study, in situ air and soil Hg concentrations and air-soil Hg fluxes were measured from April 2009 to December 2011. The results showed that in the study area the total gaseous mercury(TGM) concentration exhibited remarkable spatial and temporal distribution patterns, i.e. the TGM gradually decreased following the increase in distance to gold mining sites in space, and the values in spring, summer and autumn were elevated by 1–2 orders of magnitude in comparison with those in winter. Furthermore, at other sampling sites the total soil mercury(TSM) concentration in spring was higher than that in autumn, except for the contrary laws demonstrated at the Erdaogou mining site. However, in spring and winter the Hg flux between air and soil was under the control of different environmental factors, and the characteristics were clear and distinct. In spring the Hg flux between air and soil was directly under the control of solar irradiation, and the releasing process was predominant with a remarkable positive correlation to solar irradiation. Nevertheless, in winter the Hg fluxes were indirectly under the control of solar irradiation, which caused thermal inversion due to the thick snow cover. The depositing process was predominant and the correlations between Hg flux and air temperature was remarkably negative, and there was a positive correlation between Hg flux and solar irradiation. | WANG Zhaojun ZHANG Gang CHEN Xiaobing ZHAO Qiaojing WANG Weiying SHENG Lianxi BIAN Hongfeng LI Zhenxin WANG Deli | 2019 | Chinese Geographical Science2019,29,2: | 3 |
| 15 | 2020 Roadmap on two-dimensional nanomaterials for environmental catalysis显示文摘Environmental catalysis has drawn a great deal ofattention due to its clean ways to produce useful chemicals or carry out some chemical processes.Photocatalysis and electrocatalysis play important roles in these fields.They can decompose and remove organic pollutants from the aqueous environment,and prepare some fine chemicals.Moreover,they also can carry out some important reactions,such as 02 reduction reaction(ORR),O2 evolution reaction(OER),H2 evolution reaction(HER),CO2 reduction reaction(C02 RR),and N2 fixation(NRR).For catalytic reactions,it is the key to develop high-performance catalysts to meet the demand fortargeted reactions.In recentyears,two-dimensional(2 D) materials have attracted great interest in environmental catalysis due to their unique layered structures,which offer us to make use of their electronic and structural characteristics.Great progress has been made so far,including graphene,black phosphorus,oxides,layered double hydroxides(LDHs),chalcogenides,bismuth-based layered compounds,MXenes,metal organic frameworks(MOFs),covalent organic frameworks(COFs),and others.This content drives us to invite many famous groups in these fields to write the roadmap on two-dimensional nanomaterials for environmental catalysis.We hope that this roadmap can give the useful guidance to researchers in future researches,and provide the research directions. | Yulu Yang Mingguang Wu Xingwang Zhu Hui Xu Si Ma Yongfeng Zhi Hong Xia Xiaoming Liu Jun Pan Jie-Yinn Tang Siang-Piao Chai Leonardo Palmisano Francesco Parrino Junli Liu Jianzhong Ma Ze-Lin Wang Ling Tan Yu-Fei Zhao Yu-Fei Song Pardeep Singh Pankaj Raizada Deli Jiang Di Li R.A.Geioushy Jizhen Ma Jintao Zhang Song Hu Rongjuan Feng Gang Liu Minghua Liu Zhenhua Li Mingfei Shao Neng Li Jiahe Peng Wee-Jun Ong Nikolay Kornienko Zhenyu Xing Xiujun Fan Jianmin Ma | 2019 | Chinese Chemical Letters2019,30,12: | 2 |
| 16 | DMH1(4-[6-(4-isopropoxyphenyl)pyrazolo[1,5-a]pyrimidin-3-yl]quinoline) inhibits chemotherapeutic drug-induced autophagy显示文摘Our previous work found that DMH1(4-[6-(4-isopropoxyphenyl)pyrazolo [1,5-a]pyrimidin-3-yl]quinoline) was a novel autophagy inhibitor. Here, we aimed to investigate the effects of DMH1 on chemotherapeutic drug-induced autophagy as well as the efficacy of chemotherapeutic drugs in different cancer cells. We found that DMH1 inhibited tamoxifen- and cispcis-diaminedichloroplatinum(II)(CDDP)-induced autophagy responses in MCF-7 and HeLa cells, and potentiated the anti-tumor activity of tamoxifen and CDDP for both cells. DMH1 inhibited 5-fluorouracil(5-FU)-induced autophagy responses in MCF-7 and HeLa cells, but did not affect the anti-tumor activity of 5-FU for these two cell lines. DMH1 itself did not induce cell death in MCF-7 and HeLa cells, but inhibited the proliferation of these cells. In conclusion, DMH1 inhibits chemotherapeutic drug-induced autophagy response and the enhancement of efficacy of chemotherapeutic drugs by DMH1 is dependent on the cell sensitivity to drugs. | Yue Sheng Bo Sun Xin Xie Na Li Deli Dong | 2015 | Acta Pharmaceutica Sinica B2015,5,4: | 2 |
| 17 | Current re-vegetation patterns and restoration issues in degraded geological phosphorus-rich mountain areas:A synthetic analysis of Central Yunnan, SW China显示文摘China has the largest area of inland geological phosphorus-rich(GPR) mountains in the world, where vegetation restoration is key to safeguarding the environment. We reviewed the published literature and collected new data in order to analyze re-vegetation patterns and the status of plant communities in central Yunnan. The aim of our analysis was to suggest future improvements to restoration strategies in GPR mountain regions. Our results showed that spontaneous recovery was the most widespread type of restoration. N-fixing species such as Coriaria nepalensis and Alnus nepalensis play a vital role in succession. In the past, monoculture tree plantation was the primary method used in afforestation activities in central Yunnan; in recent years however, several different methods of restoration have been introduced including the use of agroforestry systems. For practical restoration, we found that spontaneous recovery was capable of delivering the best results, but that during its early stages, restoration results were affected by several factors including erosion risk, the origin of propagates and environmental variation. In contrast, methods employing human-made communities performed better in their early stages, but were constrained by higher costs and vulnerability to degradation and erosion. The use of N-fixing species such as A. nepalensis and Acacia mearnsii in plantations were unsuccessful in restoring full ecosystem functions. The success of restoration activities in GPR mountain regions could be improved through the following measures:(1) developing a better understanding of the respective advantages and disadvantages of current natural and human-engineered restoration approaches;(2) elucidating the feedback mechanism between phosphorus-rich soil and species selected for restoration, especially N-fixing species;(3) introducing market incentives aimed at encouraging specific restoration activities such as agroforestry, and improving the industry value chain. | Kai Yan Sailesh Ranjitkar Deli Zhai Yunju Li Jianchu Xu Bo Li Yang Lu | 2017 | Plant Diversity2017,39,3: | 2 |
| 18 | Geochemical and Nd-Hf Isotopic Constraints on the Petrogenesis of an Archean Granitoid in the Erguna Massif, NE China显示文摘Crystalline basement and Precambrian crustal growth of the continental massifs within the Central Asian Orogenic Belt(CAOB) are still pending problems. Our geological and geochemical investigations identified an Archean(2606 Ma) granitic pluton in the Biliya area of the Erguna Massif. The Neoarchean granitoids show high and positive in-situ zircon ε_(Ht)(t)(+0.3 to +10.0), whole-rock ε_(Nd)(t)(+4.8) and whole-rock ε_(Ht)(t) values(+2.1). They are characterized by high Y + Ce + Zr + Nb(> 220 ppm) and Zr contents and could be classified as A-type granites. These granitoids are characterized by high Zr saturation temperatures(T;)(796–836°C). They were derived from partial re-melting of juvenile mafic lower crust in an intracontinental back-arc extensional environment. This newly identified Neoarchean granitic pluton may represent the crystalline basement of the several continent massifs within the CAOB, and their high ε_(Ht)(t)–ε_(Nd)(t) values may also indicate the occurrence of lateral crustal growth events in these massifs during the Neoarchean. | SHAO Jun LI Yinglei WANG Deli SONG Wanbing WU Xinwei LIU Hongzhang | 2021 | Acta Geologica Sinica(English Edition)2021,95,6: | 2 |
| 19 | Study on prediction model of maximum hydraulic extension depth for ultra deep wells considering effects of temperature显示文摘How long the ultra deep well can extend and what is the ultra deep well's maximum hydraulic extension depth are always concerned and studied by drilling engineers. The well's maximum hydraulic extension depth can be predicted by the maximum hydraulic extension depth prediction model. To overcome the disadvantage that previous prediction model did not consider the effects of temperature and only applies to horizontal wells, a prediction model of maximum hydraulic extension depth for ultra deep wells considering effects of temperature is established. Considering the effects of temperature coupled with the constraints of drilling pump rated pressure and rated power, the prediction result of ultra deep well's maximum hydraulic extension depth is modified. An ultra deep well developed by Sinopec in Shunbei oilfield, China, is analyzed, and its wellbore temperature profile and maximum hydraulic extension depth are analyzed and predicted. Results show that the maximum hydraulic extension depth with considering temperature is larger than that without considering temperature. With the identical depth, the higher inlet temperature and the greater geothermal gradient mean the higher drilling fluid temperatures in the drill string and annulus as well as the larger maximum hydraulic extension depth. Besides, the maximum depth decreases with the increase in drilling fluid flow rate and density, while it increases with the increase in drilling pump rated pressure and rated power. To ensure the designed depth can be reached, there exists the maximum drilling fluid flow rate and density, as well as the minimum drilling pump rated pressure and rated power. This study is important for accurately predicting the ultra deep well's maximum depth within the limit capacity of drilling pump. In addition, it also plays a major role in avoiding drilling hazards. | LI Xin HU ZhiQiang GAO DeLi LIU Kui | 2020 | Science China(Technological Sciences)2020,63,9: | 2 |
| 20 | The amplified fluorescence quenching of heteroatomic conjugated polymers based on the “molecular wire”effects显示文摘Tremendous interest has been evoked in the utility of the fluorescent conjugated polymers towards the creation of ultra-sensitive systems based on the molecular wire effects which can amplify the transduction events. Here, a series of new polymers pyridine substitute poly (phen- ylene ethynylene)s are synthesized by Sonogashira-Hagihara coupling reaction. The impact of structure modification on the physical properties and spectral characteristics of poly-mers has been investigated. The quenching studies are car-ried out and exhibit that recognition site (pyridyle group) highly influences the quenching efficiency. The results show that polymer PI with pyridyl group entrapped in the conju-gated backbone has the specific and sensitive response to Pd(Ⅱ). The fluorescence quenching of PⅠby Pd(Ⅱ) is about 65 times greater than that of model monomer. | HUANG Hongmei WANG Kemin XIAO Yi ZHAI Qiuge AN Delie HUANG Shasheng LI Du | 2003 | Chinese Science Bulletin2003,48,18: | 2 |