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| 1 | Intercropping with Solanum nigrum and Solanum photeinocarpum from Two Ecoclimatic Regions Promotes Growth and Reduces Cadmium Uptake of Eggplant Seedlings显示文摘Soil contamination by heavy metals is a serious environmental problem worldwide, and reduction of heavy metal accumulation in vegetables grown on contaminated land is a matter of urgency. A pot experiment was conducted to study the effects of intercropping with the Cd hyperaccumulators Solanum nigrum and Solanum photeinocarpum from two ecoclimatic regions, Ya'an and Chengdu,Sichuan Province, China, on the growth and cadmium(Cd) uptake of eggplant(Solanum melongena L.). The biomass, photosynthetic pigment contents, and activities of antioxidant enzymes of eggplant were enhanced by intercropping. The biomass of eggplant was the highest after intercropping with S. photeinocarpum from Ya'an, but did not differ significantly from that after intercropping with S. nigrum from Chengdu. The shoot Cd content of eggplant was significantly reduced by intercropping with the hyperaccumulators,which ranked as follows: S. nigrum from Chengdu > S. nigrum from Ya'an > S. photeinocarpum from Chengdu > S. photeinocarpum from Ya'an, with the decreases being 19.60%, 14.36%, 9.66%, and 6.42%, respectively, as compared with the control. The lowest shoot Cd content and translocation factor of eggplant were attained after intercropping with S. nigrum from Chengdu. Therefore, it was feasible to intercrop eggplant with S. nigrum and S. photeinocarpum on Cd-contaminated soil. | TANG Yi HE Juan YU Xuena XIE Yongdong LIN Lijin SUN Guochao LI Huanxiu LIAO Mingan LIANG Dong XIA Hui WANG Xun ZHANG Jing LIU Zejing TU Lihua LIU Li | 2017 | Pedosphere2017，27，3： | 17 |
| 2 | Application of PMMA bone cement composited with bone-mineralized collagen in percutaneous kyphoplasty显示文摘We investigated the feasibility of applying polymethylmethacrylate bone cement composited with biomimetic bone-mineralizsed collagen to percutaneous kyphoplasty(PKP).We performed PKP in 95 patients diagnosed with osteoporotic vertebral compression fracture.All patients had fractures of a single vertebral body,and they were divided randomly into control(group A,47 patients)and experimental(group B,48 patients)groups.Patients in group A were treated with acrylic cement,and those in group B were treated with acrylic cement composited with the bone graft material.All patients were evaluated by a visual analogue scale(VAS),Oswestry disability index(ODI),Cobb angle and anterior vertebral body height preoperatively,and 3 days and 3 months postoperatively.All patients successfully completed surgery and were followed up thereafter.The VAS score,ODI index,Cobb angle and anterior vertebral body height compression rate in both groups had significant changes(P<0.05)preoperatively,and at 3 days and 3 months postoperatively.There was no significant difference between the two groups at different times(P>0.05).The analgesic effects of bone cement composited with bone-mineralized collagen are similar to those of bone cement only.Mineralized collagen has excellent promotion prospects by inducing new bone formation and reducing the incidence of adverse reactions caused by bone cement. | Ming Bai Heping Yin Jian Zhao Yang Li Yongdong Yang Yimin Wu | 2017 | Regenerative Biomaterials2017，4，4： | 17 |
| 3 | New records of Jurassic petrified wood in Jianchang of western Liaoning,China and their palaeoclimate implications显示文摘Diverse and rich fossil wood records have been documented from the Mesozoic of Liaoning Province, NE China. The Tiaojishan Formation(mainly distributed in Beipiao, Chaoyang, Fuxin and Jianchang regions) is one of the most significant horizons for the Jurassic petrified wood in Liaoning Province. Previously, wood fossils of this formation were mainly reported in Beipiao and Chaoyang regions, whereas fossil wood record was merely known in Jianchang region. Here we describe new fossil wood specimens from the Tiaojishan Formation in Jianchang County, western Liaoning. Two fossil wood taxa, i.e., Protaxodioxylon jianchangense Tian et Wang sp. nov. and Xenoxylon peidense Zheng et Zhang were recognized on the basis of anatomical features. These fossil wood records add new data for understanding the fossil wood diversity, floral composition and palaeoclimate of the Tiaojishan Formation. The occurrence of Xenoxylon and Protaxodioxylon implies a cool temperate, wet and seasonal climate condition with interannual variations during the Middle to Late Jurassic transition in western Liaoning region. | TIAN Ning XIE AoWei WANG YongDong JIANG ZiKun LI LiQin YIN YaLei ZHU ZhiPeng WANG JiaJia | 2015 | Science China Earth Sciences2015，58，12： | 10 |
| 4 | Damage by wind-blown sand and its control measures along the Taklimakan Desert Highway in China显示文摘Desertification is one of the most serious environmental problems in the world,especially in the arid desert regions.Combating desertification,therefore,is an urgent task on a regional or even global scale.The Taklimakan Desert in China is the second largest mobile desert in the world and has been called the''Dead Sea''due to few organisms can exist in such a harsh environment.The Taklimakan Desert Highway,the longest desert highway(a total length of 446 km)across the mobile desert in the world,was built in the 1990s within the Taklimakan Desert.It has an important strategic significance regarding oil and gas resources exploration and plays a vital role in the socio-economic development of southern Xinjiang,China.However,wind-blow sand seriously damages the smoothness of the desert highway and,in this case,mechanical sand control system(including sand barrier fences and straw checkerboards)was used early in the life of the desert highway to protect the road.Unfortunately,more than 70%of the sand barrier fences and straw checkerboards have lost their functions,and the desert highway has often been buried and frequently blocked since 1999.To solve this problem,a long artificial shelterbelt with the length of 437 km was built along the desert highway since 2000.However,some potential problems still exist for the sustainable development of the desert highway,such as water shortage,strong sandstorms,extreme environmental characteristics and large maintenance costs.The study aims to provide an overview of the damages caused by wind-blown sand and the effects of sand control measures along the Taklimakan Desert Highway.Ultimately,we provide some suggestions for the biological sand control system to ensure the sustainable development of the Taklimakan Desert Highway,such as screening drought-resistant species to reduce the irrigation requirement and ensure the sound development of groundwater,screening halophytes to restore vegetation in the case of soil salinization,and planting cash crops,such as Cistanche,Wolfberry,Apocynum and other cash crops to decrease the high cost of maintenance on highways and shelterbelts. | LI Congjuan WANG Yongdong LEI Jiaqiang XU Xinwen WANG Shijie FAN Jinglong LI Shengyu | 2021 | Journal of Arid Land2021，13，1： | 9 |
| 5 | Endovascular treatment of blood blister-like aneurysms in the internal carotid artery using a Willis covered stent显示文摘Background Despite the current availability of flow diverter devices(FDD), problems remains regarding optimal endovascular treatment(EVT) for blood blister-like aneurysms(BBAs) of the internal carotid artery(ICA). Objective To evaluate the safety and efficacy of EVT of BBAs in the ICA with a Willis covered stent. Methods 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Results 20 consecutive patients(5 men and 15 women) with ruptured BBAs underwent EVT using a Willis covered stent in two institutions from March 2013 to March 2018. Clinical observations, angiographic characteristics, and procedural and follow-up outcomes were retrospectively evaluated. Conclusion Our initial results demonstrate that reconstructive EVT using a Willis covered stent provides a viable approach to treat ICA BBAs. However, an expanded clinical evaluation and larger cohort are needed to confirm the results. | Yi Gu Binxian Gu Yongdong Li Yueqi Zhu Haitao Lu Liming Wei Mo Chen Minhua Li Jieqing Wan Wu Wang | 2018 | Journal of Interventional Medicine2018，1，3： | 8 |
| 6 | New discovery of fossil cycad-like plants from the Middle Jurassic of West Liaoning,China显示文摘 | WANG Yongdong ZHANG Wu ZHENG Shaolin SAIKI Keni'chi LI Nan | 2005 | Chinese Science Bulletin2005，50，16： | 8 |
| 7 | Modelling the Roles of Cewebrity Trust and Platform Trust in Consumers’Propensity of Live-Streaming:An Extended TAM Method显示文摘Live streaming is a booming industry in China,involving an increasing number of Internet users.Previous studies show that trust is a cornerstone to develop ecommerce.Trust in the streaming industry is different from that of other e-commerce areas.There are two major dimensions of trust in the live streaming context:platform trust and cewebrity trust,which are both important for customers to adopt and reuse a specific live streaming service.We collected questionnaire data from 520 participates who have used live streaming services in China.We model the collected data and identified factors that can influence users’propensity by an extended technology acceptance model(TAM)method.According to our analysis,both cewebrity trust and platform trust will greatly influence users’intention to reuse a certain platform.Moreover,results also indicate that cewebrity trust is far more important than platform trust.These findings can lead to several management strategies to improve the adherence of users to streaming platforms. | Donghui Li Guozheng Zhang Zeng Xu Yong Lan Yongdong Shi Zhiyao Liang Haiwen Chen | 2018 | Computers, Materials & Continua2018，，4： | 6 |
| 8 | Lipids of sulfate-reducing bacteria and sulfur-oxidizing bacteria found in the Dongsheng uranium deposit显示文摘U-bearing sandstones from the Dongsheng deposit in Ordos Basin contain abundant C15-C18 fatty acids. The fatty acids may have been derived from modern and ancient organisms including organisms from the intervals of U mineralization. A certain amount of i15:0, a15:0, a17:0 fatty acids coexist with small amounts of i17:1ω7c and 10me16:0, characteristic biomarkers of Desulfovibrio and Desulfobacter sp., respectively. This indicates the existence of sulfate-reducing bacteria (SRB) in the sandstones. The presence of sulfur-oxidizing bacteria (SOB), such as Beggiatoa and Thioploca, is indicated by significant amounts of 16:1ω7c and 18:1ω7c fatty acids. The existence of the SRB in the deposit, as inferred from the fatty acids, is consistent with results from fossilized microorganisms and isotopic compositions of ore-stage pyrite. This suggests that the environment may have been favorable for the SRB to grow since ore formation (9.8-22 Ma). The bacteria may have degraded hydrocarbons directly, or indirectly utilized hydrocarbons degraded by oxic microbes in the deposits. This process may have produced 12C-rich calcite and prominent baseline humps of unresolved complex mixtures (UCM), and 25-demethylated hopanes and tricyclic terpanes. The existence of sulfur-oxidizing bacteria and sulfate-reducing bacteria in the deposit may have resulted in bacterial sulfate reduction to sulfide, re-oxidization of the sulfide to sulfate and subsequent reduction of the sulfate to sulfide. This assertion is supported by ore-stage pyrite with δ34S values as low as-39.2‰, and the lightest sulfate (about 11‰) measured during the Phanerozoic, a difference of more than 46‰. | JIANG Lei CAI ChunFang ZHANG YongDong MAO ShengYi SUN YongGet LI KaiKai XIANG Lei ZHANG ChunMing | 2012 | Chinese Science Bulletin2012，57，11： | 6 |
| 9 | Bifunctional plasmonic colloidosome/graphene oxidebased floating membranes for recyclable high-efficiency solar-driven clean water generation显示文摘为太阳的水蒸发利用 plasmonic nano-particles/structures 引起了增加的兴趣;然而,大规模方法被需要增加效率并且改进太阳的蒸气产生的实物。我们基于 graphene 氧化物和多尺度的 plasmonic nanostructure 开发了一个支持膜的漂浮的太阳的蒸气产生系统;后者是从空、多孔的 Ag/Au nanocubes 被装配的测微计大小的 colloidosome。由利用粒子联合的多尺度的 plasmonic,在 10 kWteries 的极其高太阳的热变换效率直到 92% ,做 heteroatom 的 nanofibers 展览高度可逆能力和令人满意的长期的骑车稳定性。osiers-sprout-like 做 heteroatom 的碳 nanofiber 电极交付骑车的 ultrastable 有 480 和 160 mAh 据的可逆能力的性能?? | Minmin Wang Jie Zhang Ping Wang Chuanping Li Xiaolong Xu Yongdong Jin | 2018 | Nano Research2018，11，7： | 4 |
| 10 | The discovery of whole-plant fossil cycad from the Upper Triassic in western Liaoning and its significance显示文摘A recently discovered megafossil of whole plant cycad is briefly reported here. The specimen is collected from the Yangcaogou Formation (Upper Triassic) in Changheying, Beipiao, Liaoning. The whole plant is preserved intact on a sandstone slab, 89 cm long and 130 cm wide, including leaves up to 82 cm long and a male cone physically attached to the stem apex. Analysis on the morphology, arrangement and venation of leaf and pinna, male cone and its relationship with other parts indicates that the fossil is closely related to living Zamiaceae in Cycadales. This cycad fossil is hitherto most completely preserved cycad specimen including both vegetative and reproductive organs. Its discovery contributes much to our understanding of the morphology and evolution of cycads, palaeoclimate as well as palaeoenvironment. | WANG Xin LI Nan WANG YongDong ZHENG ShaoLin | 2009 | Chinese Science Bulletin2009，54，17： | 3 |
| 11 | Transition metal-mediated catalytic properties of gold nanoclusters in aerobic alcohol oxidation显示文摘Heteroatom 掺杂物能极大地修改电子、物理的性质和金 nanoclusters 的催化性能。在这研究,我们调查催化活动[Au 25x(PET)18x M ] NH 3( 宠物 = 2-phenylethanethiolate,和 M = Cu,公司, Ni,和 Zn ) 在氧气的白酒氧化的 nanoclusters。[Au 25x(PET)18x M ] NH 3 nanoclusters 被矩阵彻底地描绘帮助激光解吸附作用电离(MALDI ) 质量 spectrometry, X 光检查光电子光谱学(XPS ) , Fourier 变换红外线的光谱学(英尺红外) ,和诱导地联合的血浆团 spectrometry (ICPMS ) 。XPS 分析建议转变金属强烈与 nanoclusters 的金原子交往。CeO 2-supported nanoclusters 表演催化活动基于本甲基酒精的变换,在顺序,[Au 25x(PET)18x Ni ]>[Au 25x(PET)18x Cu ]>[Au 25x(PET)18x Zn ]>[Au 25x(PET)18x 公司] 。关于产品选择,[Au 25x(PET)18x Zn ] 并且[Au 25x(PET)18x 公司] 催化剂最好产出 benzaldehyde,[Au 25x(PET)18x Cu ] 收益 benzaldehyde 和本甲基酸,并且[Au 25x(PET)18x Ni ] 收益本甲基酸。暴露的金属原子被看作催化活跃地点。另外,催化表演(包括的活动和选择)[Au 25x(PET)18x M ] 催化剂被转变金属类型极大地转并且调停。 | Chaolei Zhang Yongdong Chen Hong Wang Zhimin Li Kai Zheng Shujun Li Gao Li | 2018 | Nano Research2018，11，4： | 3 |
| 12 | Stable oxygen-hydrogen isotopes reveal water use strategies of Tamarix taklamakanensis in the Taklimakan Desert, China显示文摘Tamarix taklamakanensis,a dominant species in the Taklimakan Desert of China,plays a crucial role in stabilizing sand dunes and maintaining regional ecosystem stability.This study aimed to determine the water use strategies of T.taklamakanensis in the Taklimakan Desert under a falling groundwater depth.Four typical T.taklamakanensis nabkha habitats(sandy desert of Tazhong site,saline desert-alluvial plain of Qiemo site,desert-oasis ecotone of Qira site and desert-oasis ecotone of Aral site)were selected with different climate,soil,groundwater and plant cover conditions.Stable isotope values of hydrogen and oxygen were measured for plant xylem water,soil water(soil depths within 0–500 cm),snowmelt water and groundwater in the different habitats.Four potential water sources for T.taklamakanensis,defined as shallow,middle and deep soil water,as well as groundwater,were investigated using a Bayesian isotope mixing model.It was found that groundwater in the Taklimakan Desert was not completely recharged by precipitation,but through the river runoff from snowmelt water in the nearby mountain ranges.The surface soil water content was quickly depleted by strong evaporation,groundwater depth was relatively shallow and the height of T.taklamakanensis nabkha was relatively low,thus T.taklamakanensis primarily utilized the middle(23%±1%)and deep(31%±5%)soil water and groundwater(36%±2%)within the sandy desert habitat.T.taklamakanensis mainly used the deep soil water(55%±4%)and a small amount of groundwater(25%±2%)within the saline desert-alluvial plain habitat,where the soil water content was relatively high and the groundwater depth was shallow.In contrast,within the desert-oasis ecotone in the Qira and Aral sites,T.taklamakanensis primarily utilized the deep soil water(35%±1%and 38%±2%,respectively)and may also use groundwater because the height of T.taklamakanensis nabkha was relatively high in these habitats and the soil water content was relatively low,which is associated with the reduced groundwater depth due to excessive water resource exploitation and utilization by surrounding cities.Consequently,T.taklamakanensis showed distinct water use strategies among the different habitats and primarily depended on the relatively stable water sources(deep soil water and groundwater),reflecting its adaptations to the different habitats in the arid desert environment.These findings improve our understanding on determining the water sources and water use strategies of T.taklamakanensis in the Taklimakan Desert. | DONG Zhengwu LI Shengyu ZHAO Ying LEI Jiaqiang WANG Yongdong LICongjuan | 2020 | Journal of Arid Land2020，12，1： | 3 |
| 13 | Nonlinear topological valley Hall edge states arising from type-Ⅱ Dirac cones显示文摘A Dirac point is a linear band crossing point originally used to describe unusual transport properties of materials like graphene.In recent years,there has been a surge of exploration of type-II Dirac/Weyl points using various engineered platforms including photonic crystals,waveguide arrays,metasurfaces,magnetized plasma and polariton micropillars,aiming toward relativistic quantum emulation and understanding of exotic topological phenomena.Such endeavors,however,have focused mainly on linear topological states in real or synthetic Dirac/Weyl materials.We propose and demonstrate nonlinear valley Hall edge(VHE)states in laserwritten anisotropic photonic lattices hosting innately the type-Ⅱ Dirac points.These self-trapped VHE states,manifested as topological gap quasi-solitons that can move along a domain wall unidirectionally without changing their profiles,are independent of external magnetic fields or complex longitudinal modulations,and thus are superior in comparison with previously reported topological edge solitons.Our finding may provide a route for understanding nonlinear phenomena in systems with type-Ⅱ Dirac points that violate the Lorentz invariance and may bring about possibilities for subsequent technological development in light field manipulation and photonic devices. | Hua Zhong Shiqi Xia Yiqi Zhang Yongdong Li Daohong Song Chunliang Liu Zhigang Chen | 2021 | Advanced Photonics2021，3，5： | 3 |
| 14 | A density-based method for adaptive LDA model selection显示文摘 | Juan Cao Tian Xia Jintao Li Yongdong Zhang Sheng Tang | 2008 | Neurocomputing2008，，7： | 2 |
| 15 | The discovery of Jurassic plants in Shenzhen of Guangdong, southern China and related significance显示文摘Investigations of major marine and non-marine geologic and biotic events across the Triassic-Jurassic transition rely predominantly on detailed stratigraphic frameworks and biodiversity analyses. The alternating sequences of marine and terrestrial Triassic-Jurassic formations in Guangdong Province represent one of the most remarkable coal-bearing series in southern China. The Lower Jurassic Jinji Formation is widely distributed in Guangdong, with continuously outcropped sections and rich marine and non-marine fossil fauna. However, as little research has been conducted on fossil plant remains in the Jinji Formation, it is difficult to understand the systematics,diversity, and floral aspects of the Jurassic. Here we report on the recent collection of rich fossil plants from the Jinji Formation in the Dapeng area of Shenzhen, southern Guangdong Province. Our studies demonstrate taxonomical affiliations, preservation status, and diversity features of these plant fossils, which are marked by the close association of densely preserved, pinnae and rachis connected leaves, and the bennettitalean reproductive organs of Williamsoniella, which may represent an Early Jurassic plant community dominated by Otozamites of the bennettitales.This work not only represents the first discovery of fossil plants in the Shenzhen area, but is also the first documentation of Jurassic plants in Guangdong and the Pearl River Delta regions. Research related to these plant fossils will be helpful in the correlation of the Early Mesozoic coal-bearing strata in Guangdong, and will provide a deeper understanding of variations in plant diversity of the Triassic and Jurassic transition in southern China. Additionally, it will provide terrestrial plant evidence for explorations in Jurassic palaeoecology, palaeoclimatology,and palaeogeography of southern China. | Yongdong Wang Xiangwu Wu Xiaoju Yang Wei Duan Liqin Li | 2014 | Chinese Science Bulletin2014，59，28： | 2 |
| 16 | Analysis of risk factors associated with endoscopic retrograde cholangiopancreatography for patients with liver cirrhosis: a multicenter, retrospective, clinical study显示文摘Background:Endoscopic retrograde cholangiopancreatography(ERCP)is the endoscopic modality of choice for the treatment of biliary and pancreatic diseases.However,patients with cirrhosis,particularly those with decompensated cirrhosis,are believed to be at increased risk for complications associated with ERCP.There is a paucity of literature describing the outcomes of ERCP for patients with cirrhosis.This study aimed to investigate the outcomes of ERCP for cirrhosis patients,especially adverse events,and evaluated its safety and efficacy.Methods:We performed a multicenter,retrospective study of all patients at Beijing Friendship Hospital affiliated to Capital Medical University,Xijing Hospital affiliated to Air Force Military Medical University,Beijing Youan Hospital affiliated to Capital Medical University,and the Fifth Medical Center of the People’s Liberation Army General Hospital from June 2003 to August 2019.The adverse events of inpatient ERCP for patients with(n=182)and without liver cirrhosis(controls;n=385)were compared.Results:A total of 567 patients underwent ERCP between January 2003 and December 2019 were enrolled in this study.Compared to patients without cirrhosis,patients with cirrhosis were at higher risk for postoperative complications(odds ratio[OR],4.172;95%confidence interval[CI],1.232–7.031;P<0.001)such as postoperative pancreatitis(OR,2.026;95%CI,1.002–4.378;P=0.001)and cholangitis(OR,3.903;95%CI,1.001–10.038;P=0.036).The main indications for ERCP for patients with cirrhosis in this study included choledocholithiasis(101 cases;55.5%),benign bile duct strictures(46 cases;25.3%),and malignant bile duct strictures(28 cases;15.4%).Among them,23 patients(12.6%)underwent balloon dilation and 79 patients(43.4%)underwent sphincterotomy.Of the patients with cirrhosis,delayed bleeding occurred in ten patients(5.5%),postoperative pancreatitis occurred in 80 patients(44.0%),and postoperative cholangitis occurred in 25 patients(13.7%).An additional multivariate analysis showed that the total bilirubin(TBIL)level(OR,4.58;95%CI,2.37–6.70)and Child-Pugh score of C(OR,3.11;95%CI,1.04–5.37)were risk factors for postoperative complications in patients with cirrhosis.Conclusions:Compared with the general population of patients undergoing ERCP,patients with cirrhosis were more prone to postoperative pancreatitis and cholangitis.TBIL levels and Child-Pugh scores were risk factors for postoperative complications in patients with cirrhosis. | Jielin Li Jiexuan Hu Peng Li Yongdong Wu Yongjun Wang Ming Ji Haiyang Hua Wenbin Ran Yanglin Pan Shutian Zhang | 2022 | Chinese Medical Journal2022，135，19： | 2 |
| 17 | A green,efficient and precise hydrogen therapy of cancer based on in vivo electrochemistry显示文摘By combined use of traditional Chinese acupuncture Fe needle electrode and in vivo electrochemistry,we achieved in vivo H2 generation in tumors in a controllable manner and exploited it for effective and green therapy of tumors for the first time.The cathodic acupuncture electrodes working under an applied voltage of~3 V(with minimal damage to the living body)undergo effective electrochemical reactions in the acidic tumor area that produce sufficient H2 locally to cause cancer cells to burst and die.Due to puncture positioning,the acidic tumor microenvironment and gas diffusion effect,the developed H2 generation electrochemotherapy(H2-ECT)strategy enables precise and large-scale tumor therapy,as demonstrated by in vivo treatment of diseased mice(glioma and breast cancers).Such green H2-ECT is simple,highly efficient and minimally invasive,requiring no expensive medical equipment or nano materials and medication,and is therefore very promising for potential clinical applications. | Guohua Qi Bo Wang Xiangfu Song Haijuan Li Yongdong Jin | 2020 | National Science Review2020，7，3： | 2 |
| 18 | Dynamic mechanisms controlling the topography of Longmenshan area显示文摘The Longmenshan fault, which defines the eastern edge of the Tibetan Plateau, is one of the steepest margins of the plateau with a sharp elevation drop of about 4 km over a distance less than 100 km across the Longmenshan fault. The mechanism which is responsible for controlling and maintaining the elevation difference is highly debated. Using multiple observations including seismic velocity model, Moho depth, effective elastic thickness of the lithosphere, we conducted a quantitative study for elucidating the contributions from crust and lithospheric mantle by an integrated analysis of lithospheric isostasy and flexure. It is shown that the topography of the Longmenshan fault is supported by both lithospheric isostasy and flexure statically, and lower crustal channel flow and mantle convection dynamically. Different mechanisms have different weights for contribution to the topography of the Songpan-Ganzi block and the Sichuan Basin. The static and dynamic support contribute roughly the same to the topographic difference of ~4 km between the two sides of the Longmenshan fault. The static topographic difference of ~2 km is mainly resulted from the lithospheric isostasy, while the dynamic one of ~2 km is contributed by the uprising of the accumulated material in the lower crust beneath the Songpan-Ganzi block and the downward drag force caused by the upper mantle convection under the Sichuan Basin. It is thus suggested that the lower crustal flow and upper mantle convection are dynamic forces which should be taken into account in the studies on the dynamics in the Longmenshan and surrounding regions. | Yuan XIE Yongdong LI Xiong XIONG | 2020 | Science China Earth Sciences2020，63，1： | 2 |
| 19 | Continuous dimethyl carbonate synthesis from CO_(2) and methanol over Bi_(x)Ce_(1-x)O_(δ) monoliths:Effect of bismuth doping on population of oxygen vacancies,activity,and reaction pathway显示文摘We evaluated bismuth doped cerium oxide catalysts for the continuous synthesis of dimethyl carbonate(DMC)from methanol and carbon dioxide in the absence of a dehydrating agent.Bi_(x)Ce_(1-x)O_(δ)nanocomposites of various compositions(x=0.06-0.24)were coated on a ceramic honeycomb and their structural and catalytic properties were examined.The incorporation of Bi species into the CeO_(2) lattice facilitated controlling of the surface population of oxygen vacancies,which is shown to play a crucial role in the mechanism of this reaction and is an important parameter for the design of ceria-based catalysts.The DMC production rate of the Bi_(x)Ce_(1-x)O_(δ) catalysts was found to be strongly enhanced with increasing Ov concentration.The concentration of oxygen vacancies exhibited a maximum for Bi_(0.12)Ce_(0.88)O_(δ),which afforded the highest DMC production rate.Long-term tests showed stable activity and selectivity of this catalyst over 45 h on-stream at 140°C and a gas-hourly space velocity of 2,880 mL·g_(cat)^(-1)·h^(-1).In-situ modulation excitation diffuse reflection Fourier transform infrared spectroscopy and first-principle calculations indicate that the DMC synthesis occurs through reaction of a bidentate carbonate intermediate with the activated methoxy(-OCH_(3))species.The activation of C0_(2) to form the bidentate carbonate intermediate on the oxygen vacancy sites is identified as highest energy barrier in the reaction pathway and thus is likely the rate-determining step. | Yongdong Chen Yue Li Wei Chen Wen Wu Xu Zhong-kang Han Ammara Waheed Zhongbin Ye Gao Li Alfons Baiker | 2022 | Nano Research2022，15，2： | 2 |
| 20 | The vertical distribution of the root system of the desert highway shelterbelt in the hinterland of the Taklimakan Desert显示文摘In this work, the vertical distribution of the root system in the Tarim Desert Highway shelterbelt under high salinity water drip irrigation was investigated. The effect of site condition and shelterbelt age was studied. The root sample was collected by plant side soil column excavation. The root distribution was found to be dependent on soil texture, aspect, and plant age. In harden sand, the roots were mostly in the 0–40 cm soil. The root distribution is deep in flat sandy ground and ridge sand. In unit soil volume, the root weight of flat sandy ground was the highest. Compared with the shady slope, the sunny slope had much high total root weight, deeper root distribution, but less hair root. The root weight increased rapidly with the increase of the shelterbelt ages, and the most substantial increase was observed in the early years after forest implantation. | WANG XiaoJing XU XinWen LEI JiangQiang LI ShengYu WANG YongDong | 2008 | Chinese Science Bulletin2008，53，S2： | 2 |
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