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Advances in Fe(Ⅲ)bioreduction and its application prospect for groundwater remediation:A review

Frontiers of Environmental Science & Engineering 2019年第6期13卷 11-21页

作者： Yu Jiang Beidou Xi Rui li mingxiao li Zheng Xu Yuning Yang Shaobo Gao School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China State Environmental Protection k.y Laboratory of Simulation and Control of Groundwater Pollution Chinese Research Academy of Environmental SciencesBeijing 100012China municipal and Environmental Engineering College Jilin Jianzhu UniversityChangchun 130118China School of Water Resources and Environment China University of Geosciences(Beijing)Beijing 100083China

microbial Fe(Ⅲ)reduction is a significant driving force for the biogeochemical cycles of C,O,P,S,N,and dominates the natural bio-purification of contaminants in groundwater(e.g.,petroleum hydrocarbons,chlorinated ethane,and chromium).In this review,the mechanisms and environmental significance of Fe(Ⅲ)(hydro)oxides bioreduction are *** with crystalline Fe(Ⅲ)(hydro)oxides,amorphous Fe(m)(hydro)oxides are more *** and electron shuttle both play an important role in microbial Fe(Ⅲ)*** restrictive factors of Fe(Ⅲ)(hydro)oxides bioreduction should be further investigated to reveal the cha.a.teristics and mechanisms of the *** will improve the bioa.a.lability of crystalline Fe(Ⅲ)(hydro)oxides and accelerate the a.a.robic oxidation efficiency of the reduction state ***,the approach to extract,culture,and incubate the functional Fe(Ⅲ)reducing bacteria from actual complicated environment,and applying it to the bioremediation of organic,ammonia.a.d heavy metals contaminated groundwater will become a research topic in the *** are a broad application prospects of Fe(Ⅲ)(hydro)oxides bioreduction to groundwater bioremediation,which includes the in situ injection and permeable reactive barriers and the innovative k.riz wells *** study provides an important reference for the treatment of reduced pollutants in contaminated groundwater.

关键词： microbial Fe(Ⅲ)reduction mechanism Groundwater contamination Remediation

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Deep structure of the k.mk.l basin in the northern Tibetan Plateau and its resource environmental implications

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Science China Earth Sciences 2024年第11期67卷 3421-3435页

作者： Wenhui li Zhanwu LU Rui GAO Xiaofan DENG Jingyuan li Guangwen WANG Zhanxuan SUN Sinoprobe Laboratory of ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China School of Earth Sciences and Engineering Sun Yat-sen UniversityGuangzhou 510275China South Branch of Sinopec Petroleum Engineering Geophysics Co. LtdChengdu 610041China

The k.mk.l basin is located in the northern Tibetan Plateau and is a closed plateau basin with an average altitude of>4000 m and an area of nearly 20000 k.^(2). Its boundaries are limited by the Altyn Tagh fault, East k.nlun orogen and Qimantag orogen. Studying the deep structure of the k.mk.l basin reveals 2 significant implications:(1) the basin has developed a large thick.ess of >7000 m Cenozoic continental sediments, recording the uplift history of the northern Tibetan Plateau, and(2)preliminary work.indicates that the basin is lik.ly to have oil and gas prospects. However, owing to the adverse natural conditions of the area.a.d the strong tectonic activity in the Cenozoic, the latter of which was not conducive to hydrocarbon preservation,only regional geological mapping and petroleum exploration route surveys have been carried out, and there is no consensus on stra.a. structure and tectonic evolution. From 2021 to 2022, a deep seismic reflection profile implemented by the Second Tibetan Plateau Scientific Expedition and Research(STEP) project was the first high-resolution geophysical survey across the k.mk.l basin. This study uses seismic reflection migration profiles, first-arrival wave tomographic imaging and previous research results to a.a.yze the deep structure of the basin. The final merged model contains many features of tectonic and resource significance:(1) The k.mk.l basin is ~90 k. wide from north to south, with a basement depth of >9000 m. The main component is the Cenozoic continental deposits, which are divided into two major parts: the southern composite basin and the northern faulted basin. Owing to the later compression, the southern composite basin experienced significant deformation, but most parts still preserved their original sedimentary formations.(2) The structural deformation cha.a.teristics of the basin reveal a two-stage tectonic evolution process of the northern Tibetan Plateau in the Cenozoic: from the Oligocene to the Pliocene, the

关键词： k.mk.l basin Seismic reflection Tomography Northern Tibetan Plateau Oil and gas prospect

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The discovery and environmental significance of Chifeng wind route and huge pots of Inner mongolia.a.d Hebei Province

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Chinese Science Bulletin 1999年第16期44卷 1531-1537页

作者： Zhijiu Cui Hongjiang li ling Nan Dewen li Pek.ng Univ Dept Geog Beijing 100871 Peoples R China

The pots discovered in Inner mongolia.a.d Hebei Province are huge with a maximum diameter of 9 m and a depth of 3.5 m, singular in shape,caused by weathering and wind erosion and have certain direction. They are a k.n... 详细信息

关键词： pots weathering and wind erosion Hongshan culture environmental changes.

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litterfall,litter Decomposition,and Nutrient Dynamics in Two Subtropical Bamboo Plantations of China

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Pedosphere 2014年第1期24卷 84-97页

作者： TU li-Hua HU Hong-ling HU Ting-Xing ZHANG Jian li Xian-Wei liU li XIAO Yin-Long CHEN Gang li Ren-Hong College of Forestry Sichuan Agricultural University Institute of Ecological Forestry College of ForestrySichuan Agricultural UniversityChengdu CampusWenjiang District Personnel Department Sichuan Agricultural University Sichuan Forestry Inventory and Plan Institute

Bamboos are one of the fast-growing and multiple use species in the world, and thus bamboo forests/plantations play an important role in C sequestration at regional and global levels. We studied aboveground litterfall, litter decomposition and nutrient dynamics for two years in two subtropical bamboo ecosystems in Southwest China so as to test the hypothesis that litter quality determine the rate and nutrient dynamics during decomposition of different litter fractions. mean annual total aboveground litter production ranged from 494 to 434 g m-2 in two bamboo stands （P stand, dominated by Pleioblastus a.a.us and H stand, hybrid bamboo dominated by Bambusa pervariabilis x Dendroca.a.opsis daii）. Bulk.（-80%） of litter production was contributed by leaf litter in two stands followed by twigs and sheathes. Different litter fractions represented considerable variations in the rates of mass loss and nutrient release. Variation of the mass remaining after 2 years of decomposition was significantly explained by initial C/N ratio and initial P concentration. Initial concentrations of N, P, Ca, and mg explained 57.9%, 95.0%, 99.8% and 98.1%, respectively, of the variations of these elements mass remaining after 2 years of decomposition. The patterns of nutrient dynamics and the final amount remaining were mainly determined by their initial litter substrate quality in tl^ese two subtropical bamboo plantations.

关键词： C/N ratio litter fraction litter substrate mass loss Pleioblastus a.a.us

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The relationship between the properties of PAHs and AGN activities in type-I AGNs

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Research in Astronomy and Astrophysics 2015年第5期15卷 663-672页

作者： Qi-Chen Feng Jing Wang Hua-li li Jian-Yan Wei National Astronomical Observatories Chinese Academy of Sciences University of Chinese a.a.emy of Sciences k.y Laboratory of Space Astronomy and Technology (NAOC CAS)

In order to explore the relationship between properties of Polycyclic Aromatic Hydrocarbons （PAHs） and AGN activities in Type-I AGNs, we compiled a sample of 47 Type-I AGNs with measured PAH 11.3 μm and 7.7 μm emission lines. The PAH emission and optical properties of these AGNs are tak.n from the literature. It is found that the equivalent width （EW） of 11.3 μm emission from PAHs shows a weak.correlation with the ratio of the EWs of the Feli complex between λ4434 and A4684 to H/3 （RFe）. The PAH 11.3/7.7 ratio is correlated with various elements defined by the first eigenvector space, which are RFe, [OIII]A5007 luminosity and H/3 asymmetry. These correlations infer that AGNs with high RFe, weak.[OIII] emission and a strong H/3 blue-wing are lik.ly to have low PAH ionization, and hence a larger amount of neutral PAHs.

关键词： infrared ISm -- qua.a.s emission lines -- ga.a.ies active -- ga.a.ies evolution -- methods statistical

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Study on Ship Automatic Berthing System with mooring lines

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China Ocean Engineering 2017年第1期31卷 19-29页

作者： k.U.Yang J.G.Hur m.S.Choi D.J.Yeo J.H.Byun Department of Power System Engineering Chonnam National UniversityYeosu 550-749Korea College of Fisheries and Ocean Science Chonnam National UniversityYeosu 550-749Korea Departrnent of maritime Police Science Chonnam National UniversityYeosu 550-749Korea

This study describes an automatic berthing system with mooring lines. It is designed to be berthed by using mooring device on the upper deck.of a ship. It is to berth once maintaining pa.a.lel with the quay by controlling both forward and aft breast lines. Berthing method is used through length adjustment of mooring lines connected between ship and quay by controlling the angular velocity and the torque of hydraulic motor in mooring device. The study is conducted under three changing conditions of draft, such as even-k.el, rise of the gravity center and trim to stern. Variables affecting berthing stability are determined based on the control performance of each condition. Bond graphs method is used to model the system. Controller is designed as PID control method of reference-model algorithm. The control program is composed of synchronous control system based on the equations derived with the numerical a.a.ysis. The tank.test is conducted to verify the usefulness of the control program.

关键词： hydraulic maintain affecting berth torque adjustment draft attitude gravity verify

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Boosting photoca.a.ytic degra.a.ion of RhB via interfacial electronic effects between Fe-based ionic liquid and g-C_3N_4

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Green Energy & Environment 2019年第2期4卷 198-206页

作者： Xiaowei li Bin Wang Yuhong Huang Jun Di Jiexiang Xia Wenshuai Zhu Huaming li School of Chemistry and Chemical Engineering Institute for Energy Research Jiangsu University

The Fe-based ionic liquid doped g-C_3N_4(Fee CN) photoca.a.yst was firstly prepared base on ultrathin g-C_3N_4 obtained by multiple calcination method with a metal-based reactive ionic liquid [Omim]FeCl_4 for the degra.a.ion of Rhodamine B(RhB). Experimental results revealed that Fe3+species were doped into the framework.of g-C_3N_4. The effect of the amount of Fe-doping on the ca.a.ytic activity was performed. The result showed that the Fee CN could effectively degrade RhB under the condition of visible light irradiation. The photocurrent a.a.ysis showed that the incorporation of Fe^(3+)into g-C_3N_4 material could accelerate the sepa.a.ion of the photogenerated carriers *** the same time, the reactive species generated during the photodegra.a.ion process were tested by radicals trapping experiments and electron spin resonance(ESR). It was proposed that the synergistic effect of■ and ·OH contributed to degrade RhB efficiently.

关键词： g-C3N4 [Omim]FeCl4 Photoca.a.ytic Visible light Active species

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microstructure Cha.a.terization and Fracture Toughness of Laves Phase-Based Cr–Nb–Ti Alloys

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Acta metallurgica Sinica(English Letters) 2015年第4期28卷 514-520页

作者： Yun-Long Xue Shuang-ming li Hong Zhong Lai-Ping li Heng-Zhi Fu State k.y Laboratory of Solidification Processing Northwestern Polytechnical University Northwest Institute for Non-Ferrous metal Research

Three Laves phase-based alloys with nominal compositions of Cr2Nb-xTi （x = 20, 30, 40, in at%） have been prepared through vacuum non-consumable arc melting. The results show that the microstructures of Cr2Nb-（20, 30） Ti alloys are composed of the primary Laves phase C15-Cr2（Nb,Ti） and bcc solid solution phase, while the microstructure of Cr2Nb-40Ti alloy is developed with the eutectic phases C15-Cr2（Nb,Ti）/bcc solid solution. The measured fracture toughness of ternary Laves phase C15-Cr2（Nb,Ti） is about 3.0 mPa m1/2, much larger than 1.4 mPa m1/2 for binary Laves phase Cr2Nb. meanwhile, the fracture toughness of Cr2Nb-xTi （x = 20, 30, 40） alloys increases with increasing Ti content and reaches 10.6 mPa m1/2 in Cr2Nb-40Ti alloy. The eutectic microstructure and addition of Ti in Cr2Nb are found to be effective in toughening Laves phase-based alloys.

关键词： Laves phase-based alloys microstructure cha.a.terization Fracture toughness Crack.ropa.a.ion Fracture

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Valencene-rich fraction from Vetiveria zizanioides exerts immunostimulatory effects in vitro and in mice

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Asian Pacific Journal of Tropical Biomedicine 2021年第8期11卷 335-343页

作者： V.S.Sunitha Sebastian Jose midhun m.A.Sunil E.k.Radhak.ishnan Jyothis mathew School of Biosciences Mahatma Gandhi UniversityKottayamIndia

Objective:To decipher the responsible compound present in the aqueous root extract of Vetiveria zizanioides which has tremendous immunomodulatory ***:Different fractions of the water extract were collected and a.a.yzed for immunomodulatory activity by a.a.yzing in vitro phagocytic activity and nitric oxide *** fraction VF3 was selected and further a.a.yzed for possible compounds by high performance liquid chromatography and gas chromatography coupled with a mass *** in vitro immunomodulatory pa.a.eters such as phagocytic index,nitrite content,and tumor necrosis factor-α production in murine macrophages were *** vivo studies,sheep red blood cell induced haemagglutination titer,the number of antibody-producing cells,and sheep red blood cell induced delayed-type hypersensitivity were *** studies in L929 normal fibroblasts were also ***:One of the fractions,VF3,was selected and confirmed the presence of an active compound *** in vitro immunomodulatory pa.a.eters were significantly(Pmice showed that valencene could significantly(Pmagglutination titer,the number of antibody-producing cells,and delayed-type *** studies also showed that valencene did not cause any morphological changes and DNA da.a.e in normal ***:Valencene possesses immunomodulatory activities and can be commercially exploited for its immunostimulatory potentials.

关键词： GC-mS Immunomodulation Valencene Vetiveria zizanioides Thirst quencher

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Divergence and constraint in the thermal sensitivity of aquatic insect swimming performance

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Current Zoology 2020年第5期66卷 555-564页

作者： Alisha.a.SHAH Eva m.S.Bacmeister Juan G.Rubalca.a.Cameron k.Gha.a.bor Department of Biology Colorado State UniversityFort CollinsCO80526USA Division of Biological Sciences University of MontanaMissoulaMT59812USA Department of Biology McGill University1205 Docteur PenfieldMontrealQCCanada Department of Biology Centre for Biodiversity DynamicsNorwegian University of Science and Technology(NTNU)TrondheimNorway

Environmental temperature variation may play a significant role in the a.a.tive evolutionary divergence of ectotherm thermal performance curves(TPCs).However,divergence in TPCs may also be constrained due to various ***,we measured TPCs for swimming velocity of temperate and tropical mayflies(Family:Baetidae)and their stonefly predators(Family:Perlidae)from different *** predicted that differences in seasonal climatic regimes would drive divergence in TPCs between temperate and tropical *** tropical temperatures should favor the evolution of"specialists"that perform well across a narrow range of ***,variable temperatures in temperate zones,however,should favor"generalists"that perform well across a broad range of *** phylogenetically paired comparisons of mayflies and stoneflies,swimming speed was generally unaffected by experimental temperature and did not differ among populations between latitudes,suggesting a maintenance of performance breadth across elevation and *** exception was found between temperate and tropical mayflies at low elevation where climatic differences between latitudes are *** addition,TPCs did not differ between mayflies and their stonefly predators,except at tropical low *** results indicate that divergence in TPCs may be con strai ned in aquatic in sects except under the most differe nt ther・mal regimes,perhaps because of trade-offs that reduce thermal sensitivity and increase performance breadth.

关键词： aquatic insects climate variability elevation latitude predator-prey swimming performance thermal performance curve

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