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Challenges and opportunities in improving left ventricular remodelling and clinical outcome following surgical and trans-catheter aortic valve replacement

《医学前沿（英文）》 2021年 第15卷 第3期   页码 416-437 doi: 10.1007/s11684-021-0852-7

摘要： Over the last half century, surgical aortic valve replacement (SAVR) has evolved to offer a durable and efficient valve haemodynamically, with low procedural complications that allows favourable remodelling of left ventricular (LV) structure and function. The latter has become more challenging among elderly patients, particularly following trans-catheter aortic valve implantation (TAVI). Precise understanding of myocardial adaptation to pressure and volume overloading and its responses to valve surgery requires comprehensive assessments from aortic valve energy loss, valvular-vascular impedance to myocardial activation, force-velocity relationship, and myocardial strain. LV hypertrophy and myocardial fibrosis remains as the structural and morphological focus in this endeavour. Early intervention in asymptomatic aortic stenosis or regurgitation along with individualised management of hypertension and atrial fibrillation is likely to improve patient outcome. Physiological pacing via the His-Purkinje system for conduction abnormalities, further reduction in para-valvular aortic regurgitation along with therapy of angiotensin receptor blockade will improve patient outcome by facilitating hypertrophy regression, LV coordinate contraction, and global vascular function. TAVI leaflet thromboses require anticoagulation while impaired access to coronary ostia risks future TAVI-in-TAVI or coronary interventions. Until comparable long-term durability and the resolution of TAVI related complications become available, SAVR remains the first choice for lower risk younger patients.

关键词： surgical aortic valve replacement     trans-catheter aortic valve implantation     left ventricular hypertrophy and fibrosis     myocardial force-velocity relationship     His-Purkinje pacing     renin-angiotensin system inhibitors     coronary access impairment    

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<strong>A newly defined dioxygenase system from strong><strong>Mycobacterium vanbaaleniistrong><strong> PYR-1 endowed with an enhanced activity of dihydroxylation of high-molecular-weight polyaromatichydrocarbonsstrong>

Yiquan Wu, Ying Xu, Ningyi Zhou

《环境科学与工程前沿（英文）》 2020年 第14卷 第1期 doi: 10.1007/s11783-019-1193-5

摘要： • Mycobacterium vanbaalenii PYR-1 utilizes PAHs at different rates. • Both NidA3B3 and FNidA3B3 catalyze high-molecular-weight PAHs dihydroxylation. • NidA3B3 shows an enhanced activity with an endogenous electron transport chain. • FNidA3B3 has an enhanced activity by 50% approximately compared with NidA3B3. • FNidA3B3/NidA3B3 and NidAB in the same strain come from different ancestors. NidA3B3 is a terminal dioxygenase whose favorable substrates are high-molecular-weight polyaromatic hydrocarbons (PAHs) from Mycobacterium vanbaalenii PYR-1, a powerful PAHs degradation strain. NidA3B3 was reported to incorporate a dioxygen into the benzene ring of PAHs when equipped with an exogenous electron transport chain components PhdCD from Nocardioides sp. strain KP7 by biotransformation, but this enzyme system was not particularly efficient. In this study, strain PYR-1 was confirmed to utilize four different PAHs at different growth rates. When PhtAcAd, an endogenous electron transport chain of a phthalate dioxygenase system, was substituted for PhdCD to couple with NidA3B3, the specific activity to convert phenanthrene by strain BL21(DE3) [pNidA3B3-PhAcAd] was 0.15±0.03 U/mg, but the specific activity of strain BL21(DE3) [pNidA3B3-PhdCD] was only 0.025±0.006 U/mg. In addition, FNidA3, encoded by a newly defined ORF, has a prolonged 19-amino acid sequence at the N-terminal compared with NidA3. FNidA3B3 increased the activity by 50% approximately than NidA3B3 when using PhtAcAd. Components of the electron transport chain PhtAc and PhtAd were purified and characterized. The Km, kcat, kcat/Km values of the PhtAd were 123±26.9 M, 503±49.9 min−1, 4.1 M−1·min−1, respectively. And the Km, kcat, kcat/Km values of the ferredoxin PhtAc were 52.5±9.7 M, 3.8±0.19 min−1 and 0.07 M−1·min−1, respectively. Basing on the phylogenetic analysis, NidA3/FNidA3 were far from its isoenzyme NidA from the same strain. Combining their primary differences of transcriptional pattern in vivo, it indicated that the functionally similar Rieske dioxygenases NidA3B3/FNidA3B3 and NidAB might originate from different ancestors.

关键词： Biodegradation     polyaromatic hydrocarbons     biotransformation     ring-hydroxylating dioxygenase system    

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<strong>FESEstrong><strong>’s Best Papers of 2017strong>

《环境科学与工程前沿（英文）》 2018年 第12卷 第3期 doi: 10.1007/s11783-018-1051-x

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<strong>Photosynthesis and related metabolic mechanism of promoted rice (strong><strong>Oryza sativastrong><strong> L.) growth by TiOstrong><strong>2strong><strong> nanoparticlesstrong>

Yingdan Zhang, Na Liu, Wei Wang, Jianteng Sun, Lizhong Zhu

《环境科学与工程前沿（英文）》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1282-5

摘要： Abstract • The rice growth was promoted by nano-TiO2 of 0.1–100 mg/L. • Nano-TiO2 enhanced the energy storage in photosynthesis. • Nano-TiO2 reduced energy consumption in carbohydrate metabolism and TCA cycle. Titanium dioxide nanoparticle (nano-TiO2), as an excellent UV absorbent and photo-catalyst, has been widely applied in modern industry, thus inevitably discharged into environment. We proposed that nano-TiO2 in soil can promote crop yield through photosynthetic and metabolic disturbance, therefore, we investigated the effects of nano-TiO2 exposure on related physiologic-biochemical properties of rice (Oryza sativa L.). Results showed that rice biomass was increased >30% at every applied dosage (0.1–100 mg/L) of nano-TiO2. The actual photosynthetic rate (Y(II)) significantly increased by 10.0% and 17.2% in the treatments of 10 and 100 mg/L respectively, indicating an increased energy production from photosynthesis. Besides, non-photochemical quenching (Y(NPQ)) significantly decreased by 19.8%–26.0% of the control in all treatments respectively, representing a decline in heat dissipation. Detailed metabolism fingerprinting further revealed that a fortified transformation of monosaccharides (D-fructose, D-galactose, and D-talose) to disaccharides (D-cellobiose, and D-lactose) was accompanied with a weakened citric acid cycle, confirming the decrease of energy consumption in metabolism. All these results elucidated that nano-TiO2 promoted rice growth through the upregulation of energy storage in photosynthesis and the downregulation of energy consumption in metabolism. This study provides a mechanistic understanding of the stress-response hormesis of rice after exposure to nano-TiO2, and provides worthy information on the potential application and risk of nanomaterials in agricultural production.

关键词： Nano-TiO2     Rice     Photosynthesis     Metabolomics     Energy storage    

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<strong>Adsorption characteristics of ciprofloxacin onto g-MoSstrong><strong>2strong><strong> coated biochar nanocompositesstrong>

Zhenyu Yang, Rong Xing, Wenjun Zhou, Lizhong Zhu

《环境科学与工程前沿（英文）》 2020年 第14卷 第3期 doi: 10.1007/s11783-019-1218-0

摘要： The g-MoS2 coated composites (g-MoS2-BC) were synthesized. The coated g-MoS2 greatly increased the adsorption ability of biochar. The synergistic effect was observed for CIP adsorption on g-MoS2-RC700. The adsorption mechanisms of CIP on g-MoS2-BC were proposed. The g-MoS2 coated biochar (g-MoS2-BC) composites were synthesized by coating original biochar with g-MoS2 nanosheets at 300°C(BC300)/700°C (BC700). The adsorption properties of the g-MoS2-BC composites for ciprofloxacin (CIP) were investigated with an aim to exploit its high efficiency toward soil amendment. The specific surface area and the pore structures of biochar coated g-MoS2 nanosheets were significantly increased. The g-MoS2-BC composites provided more π electrons, which was favorable in enhancing the π-π electron donor-acceptor (EDA) interactions between CIP and biochar. As a result, the g-MoS2-BC composites showed faster adsorption rate and greater adsorption capacity for CIP than the original biochar. The coated g-MoS2 nanosheets contributed more to CIP adsorption on the g-MoS2-BC composites due to their greater CIP adsorption capacity than the original biochar. Moreover, the synergistic effect was observed for CIP adsorption on g-MoS2-BC700, and suppression effect on g-MoS2-BC300. In addition, the adsorption of CIP onto g-MoS2-BC composites also exhibited strong dependence on the solution pH, since it can affect both the adsorbent surface charge and the speciation of contaminants. It was reasonably suggested that the mechanisms of CIP adsorption on g-MoS2-BC composites involved pore-filling effects, π-π EDA interaction, electrostatic interaction, and ion exchange interaction. These results are useful for the modification of biochar in exploiting the novel amendment for contaminated soils.

关键词： Adsorption     Ciprofloxacin     g-MoS2 nanosheets     Biochar     Soil remediation    

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NiFeRuO<strong>xstrong> nanosheets on Ni foam as an electrocatalyst for efficient

《化学科学与工程前沿（英文）》 2023年 第17卷 第11期   页码 1698-1706 doi: 10.1007/s11705-023-2334-8

摘要： The electrocatalyst NiFeRuOx/NF, comprised of NiFeRuOx nanosheets grown on Ni foam, was synthesized using a hydrothermal process followed by thermal annealing. NiFeRuOx/NF displays high electrocatalytic activity and stability for overall alkaline seawater splitting: 98 mV@ 10 mA∙cm−2 in hydrogen evolution reaction, 318 mV@ 50 mA∙cm−2 in oxygen evolution reaction, and a cell voltage of 1.53 V@ 10 mA∙cm−2, as well as 20 h of durability. A solar-driven system containing such a bifunctional NiFeRuOx/NF has an almost 100% Faradaic efficiency. The NiFeRuOx coating around Ni foam is an anti-corrosion layer and also a critical factor for enhancement of bifunctional performances.

关键词： NiFeRuOx nanosheets     Ni foam     electrocatalysis     overall seawater splitting     solar-driven system    

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<strong>Fabrication and photocatalytic ability of an Au/TiOstrong><strong>2strong><strong>/reduced graphene oxide nanocompositestrong>

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

《环境科学与工程前沿（英文）》 2018年 第12卷 第1期 doi: 10.1007/s11783-017-0977-8

摘要： A new type of Au/TiO /reduced graphene oxide (RGO) nanocomposite was fabricated by the hydrothermal synthesis of TiO on graphene oxide followed by the photodeposition of Au nanoparticles. Transmission electron microscopy images showed that Au nanoparticles were loaded onto the surface of both TiO and RGO. Au/TiO /RGO had a better photocatalytic activity than Au/TiO for the degradation of phenol. Electrochemical measurements indicated that Au/TiO /RGO had an improved charge transfer capability. Meanwhile, chemiluminescent analysis and electron spin resonance spectroscopy revealed that Au/TiO /RGO displayed high production of hydrogen peroxide and hydroxyl radicals in the photocatalytic process. This high photocatalytic performance was achieved via the addition of RGO in Au/TiO /RGO, where RGO served not only as a catalyst support to provide more sites for the deposition of Au nanoparticles but also as a collector to accept electrons from TiO to effectively reduce photogenerated charge recombination.

关键词： Reduced graphene oxide     Au     TiO2     Nanocomposite     Photocatalysis    

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<strong>Effects of cultivation strategies on the cultivation of strong><strong>Chlorellastrong><strong> sp.HQ in photoreactorsstrong>

Xiaoya Liu, Yu Hong, Peirui Liu, Jingjing Zhan, Ran Yan

《环境科学与工程前沿（英文）》 2019年 第13卷 第5期 doi: 10.1007/s11783-019-1162-z

摘要： Heterotrophic cultivation caused high level of ROS and high lipids accumulation. HMTC is the best culture strategy for improving the microalgal biomass. Chlorella sp. HQ had great nutrient removal capacity under five culture strategies. The effects of cultivation strategies (including autotrophic cultivation (AC), heterotrophic cultivation (HC), fed-batch cultivation (FC), heterotrophic+ autotrophic two-stage cultivation (HATC), and heterotrophic+ mixotrophic two-stage cultivation (HMTC)) on the growth and lipid accumulation of Chlorella sp. HQ and its total nitrogen (TN) and total phosphorus (TP) removal in secondary effluent were investigated in column photoreactors. The results showed that the TN and TP removal rates ranged between 93.72%–95.82% and 92.73%–100%, respectively, under the five different strategies. The microalgal growth potential evaluated by the maximal growth rate (Rmax) was in the order of HMTC>HC>FC>AC>HATC. The values of biomass, total lipid yield, triacylglycerols (TAGs) yield, and total lipid content of the microalga cultivated in the last 5 d increased significantly, but the TAGs productivities of the five strategies were lower than those in the first 7 d. Compared with all the other cultivation strategies, the TAGs productivity and yield after 12 d of cultivation under the heterotrophic condition reached the highest values accompanying the highest level of intracellular reactive oxygen species (ROS), in which the TAGs yield reached 40.81 mg/L at the end of the cultivation period. The peaks in TAGs yield and ROS level suggested that HC was beneficial for lipids accumulation via regulating the cellular redox status and exerting ROS stress on microalgal cells. In summary, HMTC was the best cultivation strategy for improving the microalgal biomass and HC was the best strategy for microalgal TAGs accumulation to produce biodiesel.

关键词： Chlorella sp. HQ     Cultivation strategy     lipids     Nitrogen removal     Phosphorus removal     Reactive oxygen species    

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<strong>Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosisconcentrate and CaCOstrong><strong>3strong><strong> recovery: A case study on the coalchemical industrystrong>

Jiandong Lu, Shijie You, Xiuheng Wang

《环境科学与工程前沿（英文）》 2021年 第15卷 第1期 doi: 10.1007/s11783-020-1301-6

摘要： Abstract • Forward osmosis (FO) coupled with chemical softening for CCI ROC minimization • Effective removal of scale precursor ions by lime-soda ash softening • Enhanced water recovery from 54% to 86% by mitigation of FO membrane scaling • High-purity CaCO3 was recovered from the softening sludge • Membrane cleaning efficiency of 88.5% was obtained by EDTA for softened ROC Reverse osmosis (RO) is frequently used for water reclamation from treated wastewater or desalination plants. The RO concentrate (ROC) produced from the coal chemical industry (CCI) generally contains refractory organic pollutants and extremely high-concentration inorganic salts with a dissolved solids content of more than 20 g/L contributed by inorganic ions, such as Na+, Ca2+, Mg2+, Cl−, and SO42−. To address this issue, in this study, we focused on coupling forward osmosis (FO) with chemical softening (FO-CS) for the volume minimization of CCI ROC and the recovery of valuable resources in the form of CaCO3. In the case of the real raw CCI ROC, softening treatment by lime-soda ash was shown to effectively remove Ca2+/Ba2+ (>98.5%) and Mg2+/Sr2+/Si (>80%), as well as significantly mitigate membrane scaling during FO. The softened ROC and raw ROC corresponded to a maximum water recovery of 86% and 54%, respectively. During cyclic FO tests (4 × 10 h), a 27% decline in the water flux was observed for raw ROC, whereas only 4% was observed for softened ROC. The cleaning efficiency using EDTA was also found to be considerably higher for softened ROC (88.5%) than that for raw ROC (49.0%). In addition, CaCO3 (92.2% purity) was recovered from the softening sludge with an average yield of 5.6 kg/m3 treated ROC. This study provides a proof-of-concept demonstration of the FO-CS coupling process for ROC volume minimization and valuable resources recovery, which makes the treatment of CCI ROC more efficient and more economical.

关键词： Coal chemical industry     Forward osmosis     Chemical softening     Reverse osmosis concentrate    

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<strong>Sugarcane bagasse amendment improves the quality of green waste vermicompost and the growth ofstrong><strong>Eisenia fetidastrong>

Linlin Cai, Xiangyang Sun, Dan Hao, Suyan Li, Xiaoqiang Gong, Hao Ding, Kefei Yu

《环境科学与工程前沿（英文）》 2020年 第14卷 第4期 doi: 10.1007/s11783-020-1240-2

摘要： •Earthworms were able to convert green waste into more plant-available nutrients. •The part of heavy metals content increased in the compost added by earthworm. •The addition of SCB to GW did enhance earthworm biomass and humic acid content. •The resulting vermicomposts were characterized by neutral pH and lower EC value. Vermicomposting is a feasible method for disposing of lignocellulosic waste while generating a useful product. The current study assessed the potential of vermicomposting green waste mixed with sugarcane bagasse in proportions of 25%, 50%, and 75% (v:v, based on dry weight). The suitability was evaluated based on the agrochemical properties, earthworm biomass, and phytotoxicity. The final vermicomposts exhibited near-neutral pH values (7.1–7.6), and lower EC values (0.43–0.72 mS/cm) and C:N ratios (14.1–19.9).The content of available nutrients and CEC for all the vermicomposts exceeded those of the control compost (without earthworms). For vermicomposts, the average values of NO3–-N, AP, AK, and CEC were 53, 517, 1362 mg/kg, and 158 cmol/kg, respectively. The total contents of heavy metals increased in all vermicompost treatments compared to control composts with the following average final percentages: Zn (2.0%), Cr (15.5%), Pb (23.4%), and Cu (44.3%), but these amounts were safe for application in agroforestry. The addition of sugarcane bagasse to green waste significantly increased the content of total humic substance, humic acid and urease activity, acid and alkaline phosphatase activity, and Eiseniafetida reproduction. The addition of 25% sugarcane bagasse to green waste decreased the toxicity to germinating seeds. These results revealed that vermicomposting is a feasible way to degrade green waste into a value-added chemical product.

关键词： Green waste     Earthworms     Sugarcane bagasse     Vermicomposting     Nutrient recovery    

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<strong>Mercury removal from aqueous solution using petal-like MoSstrong><strong>2strong><strong> nanosheetsstrong>

Ragini Pirarath, Palani Shivashanmugam, Asad Syed, Abdallah M. Elgorban, Sambandam Anandan, Muthupandian Ashokkumar

《环境科学与工程前沿（英文）》 2021年 第15卷 第1期 doi: 10.1007/s11783-020-1307-0

摘要： Abstract • Synthesized few-layered MoS2 nanosheets via surfactant-assisted hydrothermal method. • Synthesized MoS2 nanosheets show petal-like morphology. • Adsorbent showed 93% of mercury removal efficiency. • The adsorption of mercury is attributed to negative zeta potential (-21.8 mV). Recently, different nanomaterial-based adsorbents have received greater attention for the removal of environmental pollutants, specifically heavy metals from aqueous media. In this work, we synthesized few-layered MoS2 nanosheets via a surfactant-assisted hydrothermal method and utilized them as an efficient adsorbent for the removal of mercury from aqueous media. The synthesized MoS2 nanosheets showed petal-like morphology as confirmed by scanning electron microscope and high-resolution transmission electron microscopic analysis. The average thickness of the nanosheets is found to be about 57 nm. Possessing high stability and negative zeta potential makes this material suitable for efficient adsorption of mercury from aqueous media. The adsorption efficiency of the adsorbent was investigated as a function of pH, contact time and adsorbent dose. The kinetics of adsorption and reusability potential of the adsorbent were also performed. A pseudo-second-order kinetics for mercury adsorption was observed. As prepared MoS2 nanosheets showed 93% mercury removal efficiency, whereas regenerated adsorbent showed 91% and 79% removal efficiency in the respective 2nd and 3rd cycles. The adsorption capacity of the adsorbent was found to be 289 mg/g at room temperature.

关键词： Anionic surfactant     2D material     MoS2 nanosheets     Mercury removal     Adsorption capacity    

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一类分数阶多功能n阶蜂巢型RLC电路网络 Article

Ling ZHOU, Zhi-zhong TAN, Qing-hua ZHANG

《信息与电子工程前沿（英文）》 2017年 第18卷 第8期   页码 1186-1196 doi: 10.1631/FITEE.1601560

摘要： 研究了一类多功能n阶蜂巢型电阻网络模型，该问题一直未被解决。通过调节电路参数，该网络模型可以转化为含有多种功能的数个不同网络模型，例如一个规则的梯形网络、一个n阶三角形网络，等。我们导出了电阻网络的2个新的等效电阻公式，同时导出了LC网络的等效复阻抗公式，它们都属于分数阶范畴。首先，将一个复杂网络简化为一个简单的等效模型；其次，应用基尔霍夫定律，建立一个分式差分方程模型；再次，采用等效变换方法，给出非线性差分方程的通解。在实际应用中，获得了数个有趣的特殊结论。特别地，讨论分析了一个n阶LC复阻抗网络，发现了许多新的等效复阻抗特性。

关键词： 蜂巢型网络；等效变换；分数阶差分方程；复阻抗特性    

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<strong>H. sinensisstrong><strong> mycelium inhibits epithelial-mesenchymal transition by inactivatingthe midkine pathway in pulmonary fibrosisstrong>

Li Lu, Haiyan Zhu, Hailin Wang, Huaping Liang, Yayi Hou, Huan Dou

《医学前沿（英文）》 2021年 第15卷 第2期   页码 313-329 doi: 10.1007/s11684-020-0737-1

摘要： The medical fungus has been used as a Chinese folk health supplement because of its immunomodulatory properties. Our previous studies established the antifibrotic action of mycelium (HSM) in the lung. The epithelial–mesenchymal transition (EMT) is involved in the pathogenesis of idiopathic pulmonary fibrosis. The present study investigates the role of HSM in mediating EMT during the development of pulmonary fibrosis. HSM significantly inhibits bleomycin (BLM)-induced pulmonary fibrosis by blocking the EMT. In addition, the expression levels of midkine are increased in the lungs of the BLM-induced group. Further analysis of the results indicates that the mRNA level of midkine correlated positively with EMT. HSM markedly abrogates the transforming growth factor β-induced EMT-like phenotype and behavior . The activation of midkine related signaling pathway is ameliorated following HSM treatment, whereas this extract also caused an effective attenuation of the induction of EMT (caused by midkine overexpression) . Results further confirm that oral medication of HSM disrupted the midkine pathway . Overall, findings suggest that the midkine pathway and the regulation of the EMT may be considered novel candidate therapeutic targets for the antifibrotic effects caused by HSM.

关键词： epithelial−mesenchymal transition     H. sinensis mycelium     midkine     pulmonary fibrosis    

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Renin--angiotensin system inhibitor is associated with the reduced risk of all-cause mortality in COVID

《医学前沿（英文）》 2022年 第16卷 第1期   页码 102-110 doi: 10.1007/s11684-021-0850-9

摘要： Consecutively hospitalized patients with confirmed coronavirus disease 2019 (COVID-19) in Wuhan, China were retrospectively enrolled from January 2020 to March 2020 to investigate the association between the use of renin–angiotensin system inhibitor (RAS-I) and the outcome of this disease. Associations between the use of RAS-I (angiotensin-converting enzyme inhibitor (ACEI) or angiotensin receptor blocker (ARB)), ACEI, and ARB and in-hospital mortality were analyzed using multivariate Cox proportional hazards regression models in overall and subgroup of hypertension status. A total of 2771 patients with COVID-19 were included, with moderate and severe cases accounting for 45.0% and 36.5%, respectively. A total of 195 (7.0%) patients died. RAS-I (hazard ratio (HR)=0.499, 95% confidence interval (CI) 0.325–0.767) and ARB (HR=0.410, 95% CI 0.240–0.700) use was associated with a reduced risk of all-cause mortality among patients with COVID-19. For patients with hypertension, RAS-I and ARB applications were also associated with a reduced risk of mortality with HR of 0.352 (95% CI 0.162–0.764) and 0.279 (95% CI 0.115–0.677), respectively. RAS-I exhibited protective effects on the survival outcome of COVID-19. ARB use was associated with a reduced risk of all-cause mortality among patients with COVID-19.

关键词： COVID-19     RAS inhibitor     hypertension     all-cause mortality    

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Features of seismic hazard in large dam projects and strong motion monitoring of large dams

Martin WIELAND,

《结构与土木工程前沿（英文）》 2010年 第4卷 第1期   页码 56-64 doi: 10.1007/s11709-010-0005-6

摘要： Earthquakes can affect large dam projects in many different ways. Usually, design engineers are focussing on ground shaking and neglect the other aspects. The May 12, 2008 Wenchuan earthquake has damaged 1803 dams and reservoirs, and 403 hydropower plants with an installed capacity of 3.3GW. Among these dams were the 132-m-high Shapai RCC arch dam and the 156-m-high Zipingpu concrete face rockfill dam. These recently completed dams are dam types which, up to now, have not experienced strong ground shaking. The widespread mass movements have caused substantial damage to dams and surface powerhouses in Sichuan. The different features of earthquake hazard are presented, i.e., ground shaking, faulting and mass movements. It is proposed to prepare project-specific safety plans for all dams, which consist of a matrix where the possible hazards and the corresponding countermeasures are listed. The earthquake behaviors of the Sefid Rud, Zipingpu and Shapai dams, which, in the past, have experienced strong ground shaking from nearby earthquakes, are discussed. Finally, the need for strong motion instrumentation of large dams is discussed. It is proposed that major dams with large damage potential, dams located in areas of high seismicity, and dams showing signs of abnormal behavior be equipped with strong motion instruments.

关键词： seismic hazard     arch dam     concrete face rockfill dam     strong motion instrumentation     reservoir-triggered seismicity     Wenchuan earthquake    

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标题 作者 时间 类型 操作

Challenges and opportunities in improving left ventricular remodelling and clinical outcome following surgical and trans-catheter aortic valve replacement

期刊论文

<strong>A newly defined dioxygenase system from strong><strong>Mycobacterium vanbaaleniistrong><strong> PYR-1 endowed with an enhanced activity of dihydroxylation of high-molecular-weight polyaromatichydrocarbonsstrong>

Yiquan Wu, Ying Xu, Ningyi Zhou

期刊论文

<strong>FESEstrong><strong>’s Best Papers of 2017strong>

期刊论文

<strong>Photosynthesis and related metabolic mechanism of promoted rice (strong><strong>Oryza sativastrong><strong> L.) growth by TiOstrong><strong>2strong><strong> nanoparticlesstrong>

Yingdan Zhang, Na Liu, Wei Wang, Jianteng Sun, Lizhong Zhu

期刊论文

<strong>Adsorption characteristics of ciprofloxacin onto g-MoSstrong><strong>2strong><strong> coated biochar nanocompositesstrong>

Zhenyu Yang, Rong Xing, Wenjun Zhou, Lizhong Zhu

期刊论文

NiFeRuO<strong>xstrong> nanosheets on Ni foam as an electrocatalyst for efficient

期刊论文

<strong>Fabrication and photocatalytic ability of an Au/TiOstrong><strong>2strong><strong>/reduced graphene oxide nanocompositestrong>

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

期刊论文

<strong>Effects of cultivation strategies on the cultivation of strong><strong>Chlorellastrong><strong> sp.HQ in photoreactorsstrong>

Xiaoya Liu, Yu Hong, Peirui Liu, Jingjing Zhan, Ran Yan

期刊论文

<strong>Forward osmosis coupled with lime-soda ash softening for volume minimization of reverse osmosisconcentrate and CaCOstrong><strong>3strong><strong> recovery: A case study on the coalchemical industrystrong>

Jiandong Lu, Shijie You, Xiuheng Wang

期刊论文

<strong>Sugarcane bagasse amendment improves the quality of green waste vermicompost and the growth ofstrong><strong>Eisenia fetidastrong>

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