|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Somatic Embryogenesis Receptor Kinases Control Root Development Mainly via Brassinosteroid-Independent Actions in Arabidopsis thaliana显示文摘Brassinosteroids(BRs),a group of plant steroidal hormones,play critical roles in many aspects of plant growth and development.Previous studies showed that BRI1-mediated BR signaling regulates cell division and differentiation during Arabidopsis root development via interplaying with auxin and other phytohormones.Arabidopsis somatic embryogenesis receptor-like kinases(SERKs),as co-receptors of BRI1,were found to play a fundamental role in an early activation step of BR signaling pathway.Here we report a novel function of SERKs in regulating Arabidopsis root development.Genetic analyses indicated that SERKs control root growth mainly via a BR-independent pathway.Although BR signaling pathway is completely disrupted in the serk1 bak1 bkk1 triple mutant,the root growth of the triple mutant is much severely damaged than the BR deficiency or signaling null mutants.More detailed analyses indicated that the triple mutant exhibited drastically reduced expression of a number of genes critical to polar auxin transport,cell cycle,endodermis development and root meristem differentiation,which were not observed in null BR biosynthesis mutant cpd and null BR signaling mutant bri1-701. | Junbo Du Hongju Yin Shasha Zhang Zhuoyun Wei Baolin Zhao Jinghua Zhang Xiaoping Gou Honghui Lin Jia Li | 2012 | Journal of Integrative Plant Biology2012，54，6： | 22 |
| 2 | Recent Developments in the Crystallization Process: Toward the Pharmaceutical Industry显示文摘 | Zhenguo Gao Sohrab Rohani Junbo Gong Jingkang Wang | 2017 | Engineering2017，3，3： | 16 |
| 3 | Emerging in-plane anisotropic two-dimensional materials显示文摘Black phosphorus(BP)is a rapidly up and coming star in two-dimensional(2D)materials.The unique characteristic of BP is its in-plane anisotropy.This characteristic of BP ignites a new type of 2D materials that have low-symmetry structures and in-plane anisotropic properties.On this basis,they offer richer and more unique low-dimensional physics compared to isotropic 2D materials,thus providing a fertile ground for novel applications including electronics,optoelectronics,molecular detection,thermoelectric,piezoelectric,and ferroelectric with respect to in-plane anisotropy.This article reviews the recent advance in characterization and applications of in-plane anisotropic 2D materials. | Liang Li Wei Han Lejing Pi Ping Niu Junbo Han Chengliang Wang Bin Su Huiqiao Li Jie Xiong Yoshio Bando Tianyou Zhai | 2019 | InfoMat2019，1，1： | 16 |
| 4 | Environmental changes reflected by n-alkanes of lake core in Nam Co on the Tibetan Plateau since 8.4 kaB.P.显示文摘The n-alkanes are extracted from NMLC-1 core that was drilled in the Nam Co, central Tibet. They are measured by using Gas Chromatography and Mass Spectrometry (GC/MS) for componential and quantitative analyses. According to the constructed depth-age model, the component and concentration of n-alkanes, together with total organic carbon (TOC), total nitrogen (TN) and carbonate are used to elu- cidate palaeoenvironmental changes of Nam Co during the past 8.4 ka. The results indicate that Holo- cene environment performs three stages in the lake area. In the stage of 8.4―6.7 kaB.P., it was warmer while precipitation slightly increased. This stage was ended by an obvious cold/dry event. During 6.7― 5.8 kaB.P., temperature increased rapidly and reached its maximum values at about 6.0 kaB.P. The environments were warm/wet optimum for the blooming of terrestrial plants and submerged aquatic plants. After that, temperature decreased continuously and showed the lowest values at about 3.0 kaB.P. From 2.9 kaB.P. to the present, temperature rose again but alternated with cold and warm. The lake area tended to be dry after 1.4 kaB.P. During 600―400 aB.P., the environmental feature was the reflection of 'Little Ice Age'. | LIN Xiao ZHU LiPing WANG Yong WANG JunBo XIE ManPing JU JianTing Roland MAUSBACHER Antje SCHWALB | 2008 | Chinese Science Bulletin2008，53，19： | 14 |
| 5 | Microstructure and wear resistance of PTA clad Cr_7C_3/γ-Fe ceramal composite coating显示文摘A 穿抵抗 Cr 7 C 3/γ-Fe 合金陶瓷合成涂层在变硬和 tempering C 度钢 by6 PTA 的底层上被制作(转移的血浆是) cladding 与(wt%) Fe-25Cr-7C 元素的粉末相配。涂层的微观结构被 OM, SEM, XRD 和版本描绘穿涂层的抵抗在干燥滑动下面被测试在房间温度穿状况。结果显示合成涂层有的 PTA 穿着的合金陶瓷由 Cr 7 C 3 主要粒子一致地在 γ-Fe 矩阵散布了,冶金学的联盟者被结合到 C 度钢底层。PTA 穿着的 Cr 7 C 3/Fe ceremal 合成涂层有高坚硬并且优秀在干燥滑动下面穿抵抗穿测试条件。优秀穿 Cr 7 C 3/γ-Fe ceremal 合成涂层被归因于涂层的高坚硬。 | LIU Junbo WANG Limei HUANG Jihua | 2006 | Progress in Natural Science:Materials International2006，16，8： | 13 |
| 6 | Climatic and lake environmental changes in the Serling Co region of Tibet over a variety of timescales显示文摘The Serling Co region is located at the transitional zone of the interaction between the Indian monsoon and the westerlies over the Tibetan Plateau. The Serling Co lake covers a water area of2,389 km2(June 2017) in a 45,530 km2drainage basin. Under the dramatic hydro-meteorological changes on the Tibetan Plateau in recent decades, and complex hydrological compositions of rivers and lakes in the basin, the lake area expanded by 43%, from1,667 km2in 1976, to 2,389 km2in 2017 (1)In 2014 it surpassed Nam Co as the largest lake on the Tibetan Plateau [2], and exerts significant effect on regional environmental conditions. | Liping Zhu Junbo Wang Jianting Ju Ning Ma Yinsheng Zhang Chong Liu Boping Han Linshan Liu Mingda Wang Qingfeng Ma | 2019 | Science Bulletin2019，64，7： | 13 |
| 7 | 2018 update of expert consensus statement on antiplatelet therapy in East Asian patients with ACS or undergoing PCI显示文摘East Asians are the most populous race in the world and their health status is an important global issue.Compared with Caucasian populations, East Asian patients have a different benefit/risk ratio when using antithrombotic treatment. Despite this observation, treatment strategies in East Asian patients are mostly based on the American and European guidelines. Despite a lower platelet inhibitory response to clopidogrel, East Asian patients show a similar or even a lower rate of ischemic event occurrence and higher bleeding risk compared with Caucasian patients. For potent P2Y_(12) inhibitors(ticagrelor and prasugrel),East Asian patients have shown less favorable net clinical benefits compared with Caucasian patients,which may be related to differences in pharmacokinetic/pharmacodynamic profiles and therapeutic zone of antiplatelet effect. This updated consensus mainly focuses on state-of-the-art and current controversies in the East Asian population. In addition, when East Asian patients are administered potent P2Y_(12) receptor inhibitors, the strategies and ongoing trials to overcome the related hurdles are discussed. | Yong Huo Young-Hoon Jeong Yanjun Gong Daowen Wang Ben He Jiyan Chen Guosheng Fu Yundai Chen Jianping Li Yi Li Shinya Goto Udaya S.Tantry Paul A.Gurbel Jong-Hwa Ahn Hyo-Soo Kim Myung Ho Jeong Yaling Han Sidney C.Smith Jr. Junbo Ge | 2019 | Science Bulletin2019，64，3： | 12 |
| 8 | Arab/c/opste N^(6)-methyladenosine reader CPSF30-L recognizes FUE signals to control polyadenylation site choice in liquid-like nuclear bodies显示文摘The biological functions of the epitranscriptomic modification N^(6)-methyladenosine(m^(6)A)in plants are not fully understood.CPSF30-L is a predominant isoform of the polyadenylation factor CPSF30 and consists of CPSF30-S and an m^(6)A-binding YTH domain.Little is known about the biological roles of CPSF30-L and the molecular mechanism underlying its m^(6)A-binding function in alternative polyadenylation.Here,we charac-terized CPSF30-L as an Arabidopsis m^(6)A reader whose m^(6)A-binding function is required for the floral tran-sition and abscisic acid(ABA)response.We found that the m^(6)A-binding activity of CPSF30-L enhances the formation of liquid-like nuclear bodies,where CPSF30-L mainly recognizes m*A-modified far-upstream elements to control polyadenylation site choice.Deficiency of CPSF30-L lengthens the 3'untranslated region of three phenotypes-related transcripts,thereby accelerating their mRNA degradation and leading to late flowering and ABA hypersensitivity.Collectively,this study uncovers a new molecular mechanism for m^(6)A-driven phase separation and polyadenylation in plants. | Peizhe Song Junbo Yang Chunling Wang Qiang Lu Linqing Shi Subiding Tayier Guifang Jia | 2021 | Molecular Plant2021，14，4： | 12 |
| 9 | Hydrogen sulfide suppresses transforming growth factor-β1-induced differentiation of human cardiac fibroblasts into myofibroblasts显示文摘In heart disease, transforming growth factor-β1(TGF-β1) converts fibroblasts into myofibroblasts, which synthesize and secrete fibrillar type I and III collagens. The purpose of the present study was to investigate how hydrogen sulfide(H2S) suppresses TGF-β1-induced differentiation of human cardiac fibroblasts to myofibroblasts. Human cardiac fibroblasts were serum-starved in fibroblast medium for 16 h before exposure to TGF-β1(10 ng m L-1) for 24 h with or without sodium hydrosulfide(Na HS, 100 μmol L-1, 30 min pretreatment) treatment. Na HS, an exogenous H2 S donor, potently inhibited the proliferation and migration of TGF-β1-induced human cardiac fibroblasts and regulated their cell cycle progression. Furthermore, Na HS treatment led to suppression of fibroblast differentiation into myofibroblasts, and reduced the levels of collagen, TGF-β1, and activated Smad3 in TGF-β1-induced human cardiac fibroblasts in vitro. We therefore conclude that H2 S suppresses TGF-β1-stimulated conversion of fibroblasts to myofibroblasts by inhibiting the TGF-β1/Smad3 signaling pathway, as well as by inhibiting the proliferation, migration, and cell cycle progression of human cardiac myofibroblasts. These effects of H2 S may play significant roles in cardiac remodeling associated with heart failure. | ZHANG YouEn WANG JiaNing LI Hua YUAN LiangJun WANG Lei WU Bing GE JunBo | 2015 | Science China(Life Sciences)2015，58，11： | 11 |
| 10 | Overexpressed miR-9 promotes tumor metastasis via targeting E-cadherin in serous ovarian cancer显示文摘MicroRNAs (miRNAs ) 玩在在各种各样的癌症的发展和前进的关键角色。不正常的 miR-9 表示仍然保持模糊,并且卵巢的癌症的变形前进上的一致都没被到达。在这研究,从生物信息学分析的结果证明 E-cadherin mRNA 的 3-UTR 被 miR-9 直接调整。酶记者试金结果证实 miR-9 能直接指向这 3-UTR。在卵巢的癌症织物的 miR-9 和 E-cadherin 表示被 qRT-PCR 确定。移植和侵略被在 SKOV3 和 A2780 愈合弯屈和 Transwell 系统试金检测。qRT-PCR 和西方的污点被执行检测上皮 ? 间充质的联系转变的 mRNA 和蛋白质。Immunofluorescence 技术被用来分析表示和 E-cadherin, N-cadherin,和 vimentin 的 subcellular 本地化。结果证明 miR-9 经常与配对的主要的相比是在变形浆液的卵巢的癌症织物的 upregulated。miR-9 的 Upregulation 能 downregulate E-cadherin 的表示但是 upregulate 间充质的标记(N-cadherin 和 vimentin ) 的表示。miR-9 的 Overexpression 能在卵巢的癌症支持房间移植和侵略,并且这些进程能有效地经由 miR-9 禁止者被禁止。因此,我们的学习证明 miR-9 可以经由指向 E-cadherin 和一条新奇潜在的治疗学的途径控制卵巢的癌症的转移支持卵巢的癌症转移。 | Bo Zhou Hongbin Xu Meng Xia Chaoyang Sun Na Li Ensong Guo Lili Guo Wanying Shan Hao Lu Yifan Wu Yuan Li Degui Yang Danhui Weng Li Meng Junbo Hu Ding Ma Gang Chen Kezhen Li | 2017 | Frontiers of Medicine2017，11，2： | 10 |
| 11 | Anti-loosening performance of coatings on fasteners subjected to dynamic shear load显示文摘This paper investigates the self-loosening of threaded fasteners subjected to dynamic shear load. Three kinds of typical coatings, PTFE, MoS_2, and TiN applied to bolts and nuts, are tested in this investigation. The study experimentally examines the loosening mechanisms of fasteners and assesses the anti-loosening performance of the three tested coatings based on their tightening characteristics, loosening curves, and the damage of thread surface. Additionally, the anti-loosening performance of the three coatings is compared under different load forms. The results indicate that the PTFE and MoS_2 coatings have significant anti-loosening effect, whereas the anti-loosening performance of Ti N coating is not satisfactory. It is also found that an appropriate increase of the initial tightening torque can significantly improve the anti-loosening effect. In addition, the microscopic analyses of PTFE and MoS2 coating reveal that a reduced initial tightening torque leads to fretting wear on the thread contact surfaces of fasteners, thereby aggravating the damage. | Junbo ZHOU Jianhua LIU Huajiang OUYANG Zhenbing CAI Jinfang PENG Minhao ZHU | 2018 | Friction2018，6，1： | 10 |
| 12 | Analysis of serum cardiac biomarkers and treadmill exercise test-electrocardiogram for the diagnosis of coronary heart disease in suspected patients显示文摘浆液蛋白质肌酸 kinase isoenzyme MB ( CK-MB )和心脏的 troponin T 是在临床的实践的心脏的 ischemic 损坏的经典 biomarkers ,它能易感知地检测心肌的坏死另外的二浆液蛋白质,修改局部缺血的白朊和N终端 pro-B-type natriuretic 肽( NT-proBNP ),最近作为心肌的局部缺血的新奇 biomarkers 被识别了。在这研究,四 biomarkers 在踏车锻练测试( TET )前后与怀疑的冠的心疾病( CHD )从 44 个合格病人在 sera 被检测,心电图( ECG )在 TET ( TET-ECG )和冠的 angiography ( CAG )的侵略检查期间被测量,它是 CHD 诊断的标准答案,也被执行。为 CAG, 25 个病人是积极的,, 19 为数字是的 TET-ECG 是否定的 19 和 25 分别地。在这四 biomarkers 之中,在 CAG 积极的组的 NT-proBNP 水平在 TET 前后两个都比在 CAG 否定的组的那些高得多,与在 TET 前的统计意义(P = 0.008 ) 。根据操作特征(巨鸟) 曲线的接收装置,而且,浆液 biomarker NT-proBNP 证明 CHD 和它的截止价值的诊断效果是 67 pg/ml,因此,在这的 30 个病人学习是积极的 NT-proBNP, 14 是否定的。并且是否独自或在里面与 TET-ECG 分析了联合,被发现 NT-proBNP 显然提高了考试的敏感。更重要地,在 NT-proBNP 和 TET-ECG 测试否定的所有病人结果是 CAG 否定,它意味着这二非侵略的考试的联合可能为 CHD 代替 CAG 的侵略检查诊断。与更多的病人一起的进一步的研究被保证在这份报纸验证调查结果。 | Zhenhua Zhu Yan Yan Qibing Wang Juying Qian Junbo Ge | 2010 | Acta Biochimica et Biophysica Sinica2010，42，1： | 10 |
| 13 | Exogenous taurine attenuates mitochondrial oxidative stress and endoplasmic reticulum stress in rat cardiomyocytes显示文摘公牛,有条件地必要的氨基酸,在心血管的功能起一个关键作用。这里,我们检验了效果在在老鼠 cardiomyocytes 的线粒体和 endoplasmic 蜂窝胃上公牛在葡萄糖剥夺(GD ) 期间。数据证明房间生存能力,细胞内部的公牛的内容,和公牛的 transporter 表示在 GD 期间被减少。相反,反应的氧种类的增加和细胞内部的 Ca2+ 内容被观察。也引起的 GD 破坏了展开的蛋白质反应(UPR ) 的 mitochondrial 膜潜力, apoptotic 房间死亡,和分离在 cardiomyocytes 的相对蛋白质。信号 transduction 分析证明那 Bcl-2 家庭蛋白质平衡被扰乱, caspase-12 被激活, UPR 亲戚蛋白质层次是起来调整的。而且,有 80 公里的预告的处理在 cardiomyocytes 的外长的公牛的稀释 GD 效果。我们的结果建议那公牛在禁止线粒体依赖者房间 apoptosis 和联系 UPR 的房间 apoptosis 上有有益的效果并且可能在未来在尖锐心肌的梗塞上有临床的含意。 | Yujie Yang Yue Zhang Xiaoyu Liu Ji Zuo Keqiang Wang Junbo Ge | 2013 | Acta Biochimica et Biophysica Sinica2013，45，5： | 10 |
| 14 | Active greeting technique: a mother-and-child catheter based technique to facilitate retrograde wire externalization in recanalization of coronary chronic total occlusion显示文摘Although retrograde approach has greatly improved the success rate of percutaneous coronary intervention(PCI) for coronary chronic total occlusion(CTO), retrograde wire externalization still remains challenging and time-consuming in some cases. Cases utilizing ‘‘Active Greeting Technique(AGT)', a mother-and-child catheter based technique to facilitate retrograde wire externalization, were extracted from Chronic Total Occlusion Club, China(CTOCC) database. AGT was performed by deep intubation a mother-and-child catheter(GuidezillaTMextension, 4 or 5 Fr inner catheter, and etc.) in combination with either reverse controlled antegrade or retrograde subintimal tracking(CART) technique or retrograde wire crossing technique. A total of 111 patients with 112 CTO lesions treated with this technique were retrospectively analyzed. Reverse CART technique and retrograde wire crossing technique were performed in 90.2% and 9.8% of all procedures. The utilization of GuidezillaTMextension, 4 Fr, and 5 Fr inner catheter accounted for 94.6%, 3.6%, and 1.8%, respectively. Externalization of retrograde wire was successful in all cases. No procedural complications were adjudicated to AGT. Complications independent of AGT included two target vessel perforations and two collateral perforations. No in-hospital major adverse cardiac events were found. AGT is a feasible and safe technique that facilitates retrograde wire externalization. | Junbo Ge Lei Ge Bin Zhang Xin Zhong Jianying Ma Leisheng Ru Tao Hu Juying Qian 无 | 2018 | Science Bulletin2018，63，23： | 10 |
| 15 | miR-210 over-expression enhances mesenchymal stem cell survival in an oxidative stress environment through antioxidation and c-Met pathway activation显示文摘microRNA-210(miR-210)has generally been reported to be associated with cell survival under hypoxia.However,there are few data regarding the role of miR-210 in the survival of mesenchymal stem cells(MSCs)under oxidative stress conditions.Thus,we sought to investigate whether miR-210 over-expression could protect MSCs against oxidative stress injury and what the primary mechanisms involved are.The results showed that over-expression of miR-210 significantly reduced the apoptosis of MSCs under oxidative stress,accompanied by obvious increases in cell viability and superoxide dismutase activity and remarkable decreases in malonaldehyde content and reactive oxygen species production,resulting in a noticeable reduction of apoptotic indices when compared with the control.Moreover,the above beneficial effects of miR-210 could be significantly reduced by c-Met pathway repression.Collectively,these results showed that miR-210 over-expression improved MSC survival under oxidative stress through antioxidation and c-Met pathway activation,indicating the potential development of a novel approach to enhance the efficacy of MSC-based therapy for injured myocardium. | XU JianFeng HUANG ZheYong LIN Li FU MingQiang GAO YanHua SHEN YunLi ZOU YunZeng SUN AiJun QIAN JuYing GE JunBo | 2014 | Science China(Life Sciences)2014，57，10： | 10 |
| 16 | The spatial distribution and sedimentary processes of organic matter in surface sediments of Nam Co,Central Tibetan Plateau显示文摘In this study,67 surface sediment samples collected from Nam Co in central Tibet were analyzed for total carbon,total organic carbon and total nitrogen,and 51 of these samples were also analyzed for n-alkanes.The origin and spatial distribution of organic matter were then investigated using these proxies,and the control factors responsible for the spatial distribution patterns and paleolimnological significance were discussed.The results indicated that the origin of organic matter in surface sediment of Nam Co is consistent with the sources of n-alkanes,which were primarily submerged plants,followed by terrestrial plants,and then aquatic algae and bacteria.The organic matter in surface sediments of the lake showed typical spatial variability.Because of the great influence of underwater topography,river inputs and water quality,the spatial distribution of organic matter is enriched from the source to the deposit center.This spatial variability of organic matter in the lake indicates that the sediments in different areas have different sensitivities to environmental changes,which is important to reconstruction of paleoenvironments and paleoclimate using lake sediment cores. | WANG Yong ZHU LiPing WANG JunBo JU JianTing LIN Xiao | 2012 | Chinese Science Bulletin2012，57，36： | 9 |
| 17 | PTA clad (Cr,Fe)_7C_3/γ-Fe in situ ceramal composite coating显示文摘A wear-resistant (Cr, Fe)7C3/γ-Fe in situ ceramal composite coating was fabricated on the substrate of 0.45wt%C carbon steel by a plasma-transferred arc cladding process using the Fe-Cr-C elemental powder blends. The microstructure, microhardness, and dry-sliding wear resistance of the coating were evaluated. The results indicate that the microstructure of the coating, which was composed of (Cr, Fe)7C3 primary phase uniformly distributed in the γ-Fe, and the (Cr, Fe)7C3 eutectic matrix was metallurgically bonded to the 0.45wt%C carbon steel substrate. From substrate to coating, the microstructure of the coating exhibited an evident epitaxial growth character. The coating, indehiscent and tack-free, had high hardness and appropriate gradient. It had excellent wear resistance under the dry sliding wear test condition. | Junbo Liu Limei Wang Jihua Huang | 2006 | Journal of University of Science and Technology Beijing2006，13，6： | 9 |
| 18 | Composition, spatial distribution, and environmental significance of water ions in Pumayum Co catchment, southern Tibet显示文摘主要阳离子(Mg2+ , Ca2+ , Na+ ,和 K+) 和阴离子的化学(HCO3 ? , SO4 2 ? ,并且 Cl ?) 在普麦乌姆湖的水里,公司和它的流入河被学习,在各种各样的流入河和湖之中揭示明显的离子的差别。湖水的化学类型是 Mg2+-Ca2+-HCO3 ?-SO4 2+ ,但是主要流入河的主要离子是 Ca2+-Mg2+-HCO3 ? 。在 Jiaqu 河的湖入口,主要流入河,有在深度以内的水化学的重要变化不到 2 m。然而,它在湖的另外的区域是几乎同类的。与水化学和湖水的氧同位素的分发的证据,因此,一个结论能被构画出那条 Jiaqu 河在沉没三角洲上在水的 hydrochemistry 上有不同效果,而这为另外的河不是事实。吉布斯阴谋表明负责控制湖水的化学作文的主导的机制是在排水区域捱过的岩石。离子比率和第三的阴谋进一步探索了控制集水的水化学的主要过程,即,捱过的碳酸盐,捱过的黄铁矿,并且硅酸盐捱过。在河水和湖水之间的不同 hydrochemistry 特征可以源于 CaCO3 降水。调查结果将在湖在 paleolimnological 研究有益于碳酸盐的环境意义的解释。 | ZHU Liping JU Jianting WANG Yong XIE Manping WANG Junbo PENG Ping ZHEN Xiaolin LIN Xiao | 2010 | Journal of Geographical Sciences2010，20，1： | 9 |
| 19 | New Evidence for Hydrothermal Sedimentary Genesis of the Ni-Mo Deposits in Black Rock Series of the Basal Cambrian, Guizhou Province: Discovery of Coarse-Grained Limestones and its Geochemical Characteristics显示文摘The molybdenum-nickel deposits in Shuidong District of Nayong County (Guizhou Province, Southwest China) are found mainly in black shale series of Lower Cambrian Niutitang Formation, which is another Mo-Ni-rich region besides Zunyi District (Guizhou province). Our systematic study on the Mo-Ni deposits in Tangjiaba of Nayong reveals that layered coarse-grained limestones, spherical beaded limestones concretions are hosted at the lower seam of the Mo-Ni deposits. Its strong negative carbon isotope anomaly (the carbon isotope value of the coarse-grained limestones varies from -2.148‰ to 8.223‰) is similar to that in the modern submarine black smoker chimney. The carbon in the coarse-grained limestones from black rock series of Nayong County might be deep source inorganic carbon. The seams, coarse-grained limestones, ore-bearing coarse-grained limestones and the roof and floor of the deposits are characterized by co-variation on the trace element spider diagram, showing good homology. The extraordinary enrichment of Ag, As and Sb resembles hydrothermal sedimentation. Pro-Earth's core elements Se is strongly enriched in Ni-Mo ore-bearing coarse-grained limestones. The ore-bearing rock series has an extremely low Th/U value (0.012-0.19); in the logU-logTh Cartesian Coordinates, the samples of the roof and floor of the deposits and ore-bearing coarse-grained limestones are found in the East Pacific tise; and the samples of coarse-grained limestones are found between the paleo-hydrothermal dedimentary area and the East Pacific tise. The chondrite-normalized rare earth element patterns of the Ni-Mo deposits show LREE enrichment, Ce negative anomaly, and Eu negative anomaly (which is supposed to be influenced by the deep magmatic processes in an extensional environment) resembles the rare earth element distribution patterns of the fluid and its sediments in modern submarine hydrothermal system. It proves that coarse-grained limestones is characterized by typical hydrothermal limestones, being closely related with the genesis of Mo-Ni deposits in Nayong County, which provides new evidence for hydrothermal sedimentary genesis of Mo-Ni deposit and negative carbon anomaly in the basal Cambrian on a global scale. | WEI Huairui YANG Ruidong GAO Junbo CHEN Jiyan LIU Kun CHENG Wei | 2012 | Acta Geologica Sinica(English Edition)2012，86，3： | 8 |
| 20 | Glycerol aerobic oxidation to glyceric acid over Pt/hydrotalcite catalysts at room temperature显示文摘Glycerol(GLY) aerobic oxidation in an aqueous solution is one of the most prospective pathways in biomass transformation, where the supported catalysts based on noble metals(mainly Au, Pd, Pt) are most commonly employed. Herein, Pt nanoparticles supported on rehydrated MgxAl1-hydrotalcite(denoted as re-MgxAl1-LDH-Pt) were prepared via impregnation-reduction method followed by an in situ rehydration process, which showed high activity and selectivity towards GLY oxidation to produce glyceric acid(GLYA) at room temperature. The metal-support interfacial structure and catalyst basicity were modulated by changing the Mg/Al molar ratio of the hydrotalcite precursor, and the optimal performance was achieved on re-Mg6Al1-LDH-Pt with a GLY conversion of 87.6% and a GLYA yield of 58.6%, which exceeded the traditional activated carbon and oxide supports. A combinative study on structural characterizations(XANES, CO-FTIR spectra, and benzoic acid titration) proves that a higher Mg/Al molar ratio promotes the formation of positively charged Ptd+species at metal-support interface, which accelerates bond cleavage of a-C–H and improves catalytic activity. Moreover, a higher Mg/Al molar ratio provides a stronger basicity of support that contributes to the oxidation of terminal-hydroxyl and thus enhances the selectivity of GLYA. This catalyst with tunable metal-support interaction shows prospective applications toward transformation of biomass-based polyols. | Junbo Zhang Xiaolin Li Ming Xu Yusen Yang Yinwen Li Ning Liu Xiaoyu Meng Lifang Chen Shuxian Shi Min Wei | 2019 | Science Bulletin2019，64，23： | 8 |
您所在的机构暂未开通此部分的功能，请联系管理员