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| 1 | Opportunities and challenges of the Sponge City construction related to urban water issues in China显示文摘Waterlogging is one of the major water issues in most cities of China and directly restricts their urbanization processes.The construction of Sponge City is an effective approach to solving the urban water issues,particularly for the waterlogging.In this study,both the urban issues emerged at the stage of rapid urbanization in China and the demands as well as problems of Sponge City construction related with the water issues were investigated,and the opportunities and challenges for the Sponge City construction in the future were also proposed.It was found that the current stormwater management focused on the construction of gray infrastructures(e.g.,drainage network and water tank) based on the fast discharge idea,which was costly and hard to catch up with the rapid expansion of city and its impervious surface,while green infrastructures(e.g.,river,lake and wetland)were ignored.Moreover,the current construction of Sponge City was still limited to low impacted development(LID) approach which was concentrated on source control measures without consideration of the critical functions of surrounding landscapes(i.e.,mountain,river,wetland,forest,farmland and lake),while application of the integrated urban water system approach and its supported technologies including municipal engineering,urban hydrology,environmental science,social science and ecoscape were relatively weak and needed to be improved.Besides,the lack of special Sponge City plan and demonstration area was also a considerable problem.In this paper,some perspectives on Good Sponge City Construction were proposed such as the point that idea of urban plan and construction should conform to the integral and systematic view of sustainable urban development.Therefore,both the basic theoretical research and the basic infrastructure construction such as monitoring system,drainage facility and demonstration area should be strengthened,meanwhile,the reformation and innovation in the urban water management system and the education system should also be urgently performed.The study was expected to provide a deeper thinking for the current Sponge City construction in China and to give some of suggestions for the future directions to urban plan and construction,as well as urban hydrology discipline. | XIA Jun ZHANG YongYong XIONG LiHua HE Shan WANG LongFeng YU ZhongBo | 2017 | Science China Earth Sciences2017，60，4： | 65 |
| 2 | Impact of environmental factors on water quality at multiple spatial scales and its spatial variation in Huai River Basin, China显示文摘Quantitative assessment of water quality and its spatial variation identification, as well as the discernment of primary factors affecting water quality are in its urgent in water environment management. In this study, four key water quality indicators,namely, ammonia nitrogen(NH_4^+-N), permanganate index(COD_(Mn)), total phosphorus(TP) and total nitrogen(TN) at 71 sampling sites were selected to evaluate water quality and its spatial variation identification. More concerns were emphasized on the anthropogenic factors(land use pattern) and natural factors(river density, elevation and precipitation) to quantify the overall water quality variations at different spatial scales. Results showed that the Yi-Shu-Si River sub-basin had a better water quality status than the Huai River sub-basin. The moderate polluted area nearly distributed in the upper and middle reaches of the Shaying River and Guo River. The high cluster centers which were surrounded with COD_(Mn), NH_4^+-N, TN and TP mainly also distributed in the upper and middle reaches of the Shaying River and Guo River. Redundancy analysis showed that the 200 m buffer area acted as the most sensitive area, which was easily subjected to pollution. The precipitation was identified as the most important variables among all the studied hydrological units, followed by farmland, urban land or elevation. The point source pollution was still existed although the non-point source pollution was also identified. The urban surface runoff pollution was severer than farmland fertilizer loss at the sub-basin scale in flood season, while the farmland showed 'small-scale' effects for explaining overall water quality variations. This research is helpful for identifying the overall water quality variations from the scale-process interactions and providing a scientific basis for pollution control and decision making for the Huai River Basin. | XIA Jun WANG LongFeng YU JingJie ZHAN CheSheng ZHANG YongYong QIAO YunFeng WANG YueLing | 2018 | Science China Earth Sciences2018，61，1： | 8 |
| 3 | Efficient conversion of fructose to 5-hydroxymethylfurfural over sulfated porous carbon catalyst显示文摘Sulfated porous carbon (PC-SO3H) catalyst was successfully synthesized from one-pot treatment of porous polydivinylbenzene in H2SO4 at 250 C, which exhibited very good catalytic performances in the production of 5-hydroxymethylfurfural from fructose. | Liang Wang Jian Zhang Longfeng Zhu Xiangju Meng Feng-Shou Xiao | 2013 | Journal of Energy Chemistry2013，22，2： | 4 |
| 4 | A FREE-BOUNDARY PROBLEM TO DYNAMIC SYSTEM FOR PURE FOREST显示文摘A free-boundary model of nonlinear dynamic system for pure forest is presented, in which the felling rate is unbounded nearby the free boundary. The effiect of unbounded function on a priori estimate and analysis of regularity is overcome, and the existence and uniqueness of the global classical solution to this system are proved. | Longfeng Xu, Hanbing Wu (Anhui University of Technology, Maanshan 243002, Anhui, ) | 2010 | Annals of Differential Equations2010，26，2： | 3 |
| 5 | ACTIVATION AND DEPRESSION OF CALCITE IN CALCIUM MINERALS FLOTATION显示文摘1INTRODUCTIONScheeliteoresalwayscontainfluoriteandcalcite.Whentheheadgradeoffluoriteisupto15%CaF2,thefluoriteisofeconomicvalu... | Tian, Xueda Zhang, Xiaoyun Li, Longfeng Wang, Dianzuo | 1999 | 中国有色金属学会会刊:英文版1999，9，2： | 3 |
| 6 | Rice OsRAD21-2 is Expressed in Actively Dividing Tissues and its Ectopic Expression in Yeast Results in Aberrant Cell Division and Growth显示文摘Rad21 and its meiotic counterpart Rec8,the key components of the cohesin complex,are essential for sister chromatid cohesion and chromosome segregation in mitosis and meiosis,respectively.In contrast to yeast and vertebrates,which have only two RAD21/REC8 genes,the rice genome encodes four Rad21/Rec8 proteins.Here,we report on the cloning and characterization of OsRAD21-2 from rice(Oryza sativa L.).Phylogenetic analysis of the full-length amino acids showed that OsRad21-2 was grouped into the plant-specific Rad21 subfamily.Semi-quantitative reverse transcription-polymerase chain reaction revealed OsRAD21-2 preferentially expressed in premeiotic owers.Further RNA in situ hybridization analysis and promoter:β-glucuronidase staining indicated that OsRAD21-2 was mainly expressed in actively dividing tissues including premeiotic stamen,stem intercalary meristem,leaf meristem,and root pericycle.Ectopic expression of OsRAD21-2 in fission yeast resulted in cell growth delay and morphological abnormality.Flow cytometric analysis revealed that the OsRAD21-2-expressed cells were arrested in G2 phase.Our results suggest that OsRad21-2 functions in regulation of cell division and growth. | Chunyan Gong Tang Li Qi Li Longfeng Yan Tai Wang | 2011 | Journal of Integrative Plant Biology2011，53，1： | 3 |
| 7 | Two New Wasps (Hymenoptera:Stephanoidea:Ephialtitidae) from the Middle Jurassic of China显示文摘Two new species of wasps belonging to the family Ephialtitidae,Praeproapocritus flexus sp.nov.and Proapocritus parallelus sp.nov.,from the Middle Jurassic Jiulongshan Formation of southeastern Inner Mongolia,China,are described and illustrated.Praeproapocritus vulgates Rasnitsyn&Zhang,2010 and six species of Proapocritus,P.densipediculus,P.sculptus,P.longantennatus,P.formosus,P.atropus,and P.elegans,all described by Rasnitsyn and Zhang in 2010,are first record from the Middle Jurassic of China.These two new findings supplement the morphological understanding of ephialtitids in the Middle Jurassic of China and broaden the diversity of ephialtitids in their by-gone ecosystems. | LI Longfeng SHIH Chungkun REN Dong | 2013 | Acta Geologica Sinica(English Edition)2013，87，6： | 3 |
| 8 | ROOM TEMPERATURE CLEANER FLOTATION TECHNIQUE FOR SCHEELITE ROUGH CONCENTRATE显示文摘ROOMTEMPERATURECLEANERFLOTATIONTECHNIQUEFORSCHEELITEROUGHCONCENTRATE①TianXuedaChemistry&ChemicalEngineringColege,XiangtanUniv... | Tian, Xueda Zhang, Xiaoyun Li, Longfeng Wang, Dianzuo | 1997 | 中国有色金属学会会刊:英文版1997，7，2： | 3 |
| 9 | A new phosphidation route for the synthesis of NiPx and their cocatalytic performances for photocatalytic hydrogen evolution over g-C3N4显示文摘Ni-based phosphides(NiPx)composed of earth-abundant elements are promising cocatalysts to replace noble metals for photocatalytic H2 evolution reaction(HER).A safe,energy-saving,and compositioncontrollable synthesis of NiPx is still highly desired.A facile and mild solvothermal process was developed for the first time for selective synthesis of a series of NiPx,including Ni,Ni12P5,Ni2P/Ni12P5,Ni/Ni2P and Ni2P,through controlling the dosage of NaBH4 and NaH2PO2.The phosphidation process was mainly composed of(1)a sequential reduction of Ni2+to Nj0 and(H2PO2)-to P(around the formed Ni0)triggered by NaBH4,and(2)a final phosphidation between Nj0 and the in situ generated P atoms.The photocatalytic HER performance of g-C3N4 can be substantially improved with the decoration of NiPx(3 wt%)as the separation of photoinduced charge carriers can be promoted and some active sites with low over-potential for HER can be introduced.The cocatalytic efficiency of NiPx is mainly determined by P content.Ni2P with a high ratio of P consequently exhibits the highest HER performance(215.1 umol g-1 h-1),which is almost six times higher than that of the pristine g-C3N4(35.6 umol g-1 h-1).Thus,as for the cocatalyst based on Ni phosphides,Ni2P is the preferable crystal phase and more efforts should be devoted to Ni2P to further optimize its structure,texture,and morphology in future works. | Ziqun Wang Longfeng Li Mingzhu Liu Tifang Miao Xiangju Ye Sugang Meng Shifu Chen Xianliang Fu | 2020 | Journal of Energy Chemistry2020，29，9： | 2 |
| 10 | Performance-enhanced and cost-effective triboelectric nanogenerator based on stretchable electrode for wearable SpO2 monitoring显示文摘Recently,stretchable and wearable health monitoring equipment has greatly improved human’s daily life,which sets higher demands for portable power source in stretchability,sustainability,and biocompatibility.In this work,we proposed a stretchable triboelectric nanogenerator(TENG)based on stretchable poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)/porous carbon hybrid for oxyhemoglobin saturation(SpO2)monitoring.To combine advantages of carbon material for its high conductivity and organic electrode for its high stretchability,we spin-coated a solution of PEDOT:PSS/porous carbon onto a plasma-treated pre-stretched Ecoflex film to fabricate a stretchable electrode with rough surface.Due to its roughness and high potential difference with the dielectric material,the stretchable-electrode-based TENG exhibited better performance compared to the pristine TENG based on carbon or PEDOT:PSS material.The output voltage and current reached up to 51.5 V and 13.2μA as the carbon concentration increased.More importantly,the performance further increased under large strain(100%)which is suitable for wearable systems.Finally,the device demonstrated its application potential for powering a flexible blood oxygen monitor.This simple and cost-effective method can enhance the stretchability and stability of organic/inorganic electrode-based TENG,which paves the development of high-performance stretchable TENG. | Huamin Chen Wei Yang Cheng Zhang Mingqiang Wu Wenjie Li Yuxiao Zou Longfeng Lv Hualiang Yu Huizhen Ke Ruping Liu Yun Xu Jun Wang Zhou Li | 2022 | Nano Research2022，15，3： | 2 |
| 11 | Influence of dynamic crystallization on exchange-coupled NdFeB nanocrystalline permanent magnets显示文摘Dynamic crystallization was introduced to improve the magnetic properties of NdFeB nanocrystalline permanent magnets by optimizing microstructure. The microstructure was studied by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It has been determined that, compared with the conventional heat treatment, dynamic crystallization can shorten the crystallization time. Moreover, dynamic crystallization can refine grains, enhance the exchange-coupled interaction among grains, and promote the magnetic properties. As a result, the optimal magnetic properties of Nd10.5(FeCoZr)83.4B6.1 (Br=0.685 T, Hci=732 kA·m-1, Hcb=429 kA·m-1, (BH)m=75 kJ·m-3) are obtained after dynamic crystallization heat treatment at 700 ℃ for 10 min. | ZHANG Ran LIU Ying MA Yilong ZHANG Longfeng XU Jianchuan GAO Shengji | 2006 | Rare Metals2006，25，z1： | 2 |
| 12 | Towards Responsive Single-Molecule Device显示文摘Single-molecule devices,which are fabricated by the single molecule bridged through electrodes,provide a promising approach to investigate the intrinsic chemical or physical properties of individual molecules.Beyond the studies of single-molecule wires,a large number of responsive single-molecule junctions or devices with unique chemical or physical properties have been designed and fabricated by introducing the external field,which further offers the chance to explore conductive materials at the molecular level.Here,we summarized the latest studies on the behaviors of single-molecule devices based on the photon,thermal,electric,or magnetic responses,and discussed the development of responsive single-molecule devices in prospect. | Yaorong Chen Longfeng Huang Hang Chen Zhixin Chen Hewei Zhang Zongyuan Xiao Wenjing Hong | 2021 | Chinese Journal of Chemistry2021，39，2： | 1 |
| 13 | Spatial distribution, source identification and pollution assessment of metal content in the surface sediments of Nansi Lake, China 显示文摘 | WANG Longfeng YANG Liyuan KONG Linghao | 2014 | Journal of Geochemical Exploration2014，140，： | 1 |
| 14 | The beneficiation of accumulative diasporeoredesilication and elimination of the iron content显示文摘 | L Longfeng | 1980 | J Central-South Inst Min Metall1980，，4： | 1 |
| 15 | High-temperature hydrothermal synthesis of magnetically active,ordered mesoporous resin and carbon monoliths with reusable adsorption for organic dye显示文摘 | Liu Fujian Zhang Hao Zhu Longfeng | 2013 | Adsorption2013，19，2： | 1 |
| 16 | Designed Copper-Amine Complex as an Efficient Template for One-Pot Synthesis of Cu-SSZ-13 Zeolite with Excellent Activity for Selective Catalytic Reduction of NOx by NH3 显示文摘 | Ren Limin Zhu Longfeng Chen Yanmei | 2011 | Chem Commun2011，47，35： | 1 |
| 17 | Two Parabolic Equation with Hysteresis显示文摘 | | 1991 | Partial Differential Equations1991，4，4： | 1 |
| 18 | Preparation of nanocrystalline Cu2O by a modified solid-state reaction method and its photocatalytic activity显示文摘 | LI Longfeng ZHANG Wenxing FENG Chen | 2013 | Materials Letters2013，107，： | 1 |
| 19 | Existence and Uniqueness of a Nonnegative Classical Solution for a Parabolic System with Nonlinear Boundary conditions显示文摘 | XU Longfeng | 2004 | Journal of Anhui University2004，，2： | 1 |
| 20 | High-temperature synthesis of magnetically active and SO 3 H-functionalized ordered mesoporous carbon with good catalytic performance显示文摘 | Fujian Liu Jing Sun Qi Sun Longfeng Zhu Liang Wang Xiangju Meng Chenze Qi Feng-Shou Xiao | 2011 | Catalysis Today2011，，1： | 1 |
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