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| 1 | Advanced prediction for multiple disaster sources of laneway under complicated geological conditions显示文摘The driving safety in the laneway is often controlled by multiple disaster sources which include fault fracture zone, water-bearing body, goaf and collapse column. The advanced prediction of them has become a hotspot. Based on analysis of physical characteristics of the disaster sources and comparative evaluation of accuracy of the main advanced geophysical detection methods, we proposed a comprehen- sive judging criterion that tectonic interface can be judged by the elastic wave energy anomaly, strata water abundance can be discriminated by apparent resistivity response difference and establish a reason- able advanced prediction system. The results show that the concealed disaster sources are detected effec- tively with the accuracy rate of 80% if we use advanced prediction methods of integrated geophysics combined with correction of seismic and electromagnetic parameters, moreover, applying geological data, we may then distinguish types of the disaster sources and fulfill the qualitative forecast. Therefore, the advanced prediction system pays an important referential and instructive role in laneway driving project. | Wang Bo Liu Shengdong Liu Jing Huang Lanying Zhao Ligui | 2011 | Mining Science and Technology2011，21，5： | 5 |
| 2 | Multifunction switching by a flat structurally tunable acoustic metasurface for transmitted waves显示文摘In this paper a flat structurally tunable acoustic metasurface is constructed based on the helical unit cell. The length of the acoustic channel can be tuned by the screw-in depth of the helix. Accordingly, the wave phase for the transmitted acoustic wave can be tuned and the wavefront can be manipulated. Then multifunctions such as anomalous refraction, point focusing, beam focusing and self-bending can be realized and switched just by screwing in or out the helixes. At the same time, the broadband operating frequency is also realized. The experiments for anomalous refraction and point focusing are also performed, and the results show that the designed metasurface is effective. The present studies have important applications in dynamic manipulation of acoustic waves by metasurfaces. | ALi Chen QuanYu Tang HaoYu Wang ShengDong Zhao YueSheng Wang | 2020 | Science China(Physics,Mechanics & Astronomy)2020，63，4： | 2 |
| 3 | Toxicity evaluation of collagen hydrolysates from chrome shavings and their potential use in the preparation of amino acid fertilizer for crop growth显示文摘Resource utilization of chrome shavings(CS)has attracted a lot of attention from scientists and technologists in leather industry.Especially,the collagen hydrolysates extracted from CS are expected to find potential application values in agricultural field.However,there is no biotoxicity analysis of collagen hydrolysates from CS.Herein,the collagen hydrolysates with different molecular weights were produced from CS by three hydrolysis dechroming methods including alkaline hydrolysis,enzymatic hydrolysis and alkaline-enzymatic synergistic hydrolysis,and the optimal hydrolysis process of CS was designed and conducted.To evaluate their toxicity,the three collagen hydrolysates were formulated into a nutrient solution for zebrafish development.The obtained results indicated that the hydrolysates with low concentrations(less than 0.6 mg/mL)were safe and could promote the development for zebrafish embryos.Furthermore,the three collagen hydrolysates were utilized as organic nitrogen sources and formulated into amino acid water-soluble fertilizers(AAWSF)including alkaline type fertilizer(OH),enzymatic type fertilizer(M)and alkaline-enzymatic type fertilizer(OH-M)for the early soilless seeding cultivation of wheat,soybean and rapeseed.It is worth mentioning that the chromium contents in the prepared AAWSF were less than 10 mg/kg,which is far less than the limit value in the standard(China,50 mg/kg).The growth and development of seedlings(germination rate,plant height,fresh weight of leaves,soluble sugar content and chlorophyll content)were investigated.The corresponding results showed that the growth of seedlings watered with AAWSF was better compared with the other treatments,and the OH-M fertilizer had the best promoting effect on the seedlings growth and development,followed by the M and OH fertilizers.The safe toxicity assessment of the collagen hydrolysates will expand their application scope,and the use of collagen hydrolysates extracted from CS for seedlings growth also provides an effective and reason-able way to deal with the chromium-containing leather solid waste,which is an effective way to realize its resource utilization. | Li Zhao Shengdong Mu Weixiang Wang Haibin Gu | 2022 | Journal of Leather Science and Engineering2022，4，1： | 1 |
| 4 | The structural significance of the interlayer distances of the layered hybrids (CnH2n+1NH3)2MCl4显示文摘 | GUO Liling XU Shengdong ZHAO Guanghui | 2012 | J Phys Chem Solids2012，73，： | 1 |
| 5 | Synthesis, characterization and properties of ethylenedia- mine-functionalized Fe3 04 magnetic polymers for remov- al of Cr(Ⅵ) in wastewater显示文摘 | Zhao Yonggang Shen Haoyu Pan Shengdong | 2010 | Hazard Mater2010，182，13： | 1 |
| 6 | Preparation and characterization of amino-functionalized nano-Fe3 04 magnetic polymer adsorbents for removal of chromium(Ⅵ) ions显示文摘 | Zhao Yonggang Shen Haoyu Pan Shengdong | 2010 | Mater Sci2010，45，19： | 1 |
| 7 | Fast determination of 22 sulfonamides from chicken breast muscle using core-shell nanoring amino-functionalized superparamagnetic molecularly imprinted polymer followed by liquid chromatography- tandem mass spectrometry显示文摘 | ZHAO Yonggang ZHOU Lixin PAN Shengdong | 2014 | Journal of Chromatography A2014，1345，： | 1 |
| 8 | Temperature distribution of fluids in a two-section two-phase closed thermosyphon wellbore显示文摘Compared with a conventional single section two-phase closed thermosyphon(TPCT) wellbore, a two-section TPCT wellbore has better heat transfer performance, which may improve the temperature distribution of fluid in wellbores, increase the temperature of fluid in wellheads and even more effectively reduce the failure rate of conventional TPCT wellbores. Heat transfer performance of two-section TPCT wellbores is affected by working medium, combination mode and oil flow rate. Different working media are introduced into the upper and lower TPCTs, which may achieve a better match between the working medium and the temperature field in the wellbores. Interdependence exists between the combination mode and the flow rate of the oil, which affects the heat transfer performance of a two-section TPCT wellbore. The experimental results show that a two-section TPCT wellbore, with equal upper and lower TPCTs respectively filled with Freon and methanol, has the best heat transfer performance when the oil flow rate is 200 L/h. | Zhang Yufeng Zhao Lun Fan Zifei Wu Xiaodong Fu Libing Xu Bifeng Kong Fanshun Jiang Shengdong | 2014 | Petroleum Science2014，11，2： | 0 |
| 9 | The distribution patterns and temporal dynamics of carabid beetles(Coleoptera:Carabidae)in the forests of Jiaohe,Jilin Province,China显示文摘Carabid beetles,predatory insects,are abundant in forests and sensitive to environmental changes.The distribution patterns and diversity of carabid beetles in several natural forests were studied to provide a basis for evaluating the importance of a forest in the protection of carabid beetle diversity.Carabids were captured by pitfall traps during their seasonal activity from 2012 to 2013 in a poplar-birch forest,ash-walnut forest and broad-leaved Korean pine forest.A total of 5252 individuals,representing 21 species,were collected.Carabid abundance was highest in the broad-leaved Korean pine forest and lowest in the ash-walnut forest.Carabus billbergi Mannerheim and Pterostichus pertinax(Tschitscherine)were the dominant beetle species in each stand.Carabus canaliculatus Adams was dominant in the poplar-birch and ash-walnut forests,and Leistus niger Gebler was dominant in the ash-walnut forest.The carabids were affected differently by stand factors.C.billbergi and P.pertinax was positively correlated with mean DBH.C.canaliculatus and L.niger were not positively correlated with any stand factors.The broad-leaved Korean pine forest with greater age,large DBH and thick leaf litter fostered a high diversity of carabid species.The main yearly activity period for most carabids was during July.Different carabid species responded differently to seasonality,and the activity period of several species was relatively late(August)in the year. | Shengdong Liu Shirui Dong Ruitong Liu Qingfan Meng Yan Li Hongrui Zhao Yinghua Jin | 2022 | Journal of Forestry Research2022，33，1： | 0 |
| 10 | Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission显示文摘Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch.Few present acoustic metamaterials can be constructed on the free air-water interface for enhancing the acoustic transmission because of the interface instability.Previous strategies overcoming this difficulty were limited in practical usage,as well as the wide-angle and multifrequency acoustic transmission.Here,we report a simple and practical way to obtain the wide-angle and multifrequency water-air acoustic transmission with a tunable fluid-type acoustic metasurface(FAM).The FAM has a transmission enhancement of acoustic energy over 200 times,with a thickness less than the wavelength in water by three orders of magnitude.The FAM can work at an almost arbitrary water-to-air incident angle,and the operating frequencies can be flexibly adjusted.Multifrequency transmissions can be obtained with multilayer FAMs.In experiments,the FAM is demonstrated to be stable enough for practical applications and has the transmission enhancement of over 20 dB for wide frequencies.The transmission enhancement of music signal across the water-air interface was performed to demonstrate the applications in acoustic communications.The FAM will benefit various applications in hydroacoustics and oceanography. | Zhandong Huang Shengdong Zhao Yiyuan Zhang Zheren Cai Zheng Li Junfeng Xiao Meng Su Qiuquan Guo Chuanzeng Zhang Yaozong Pan Xiaobing Cai Yanlin Song Jun Yang | 2022 | Research2022，，1： | 0 |
| 11 | Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission显示文摘Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch.Few present acoustic metamaterials can be constructed on the free air-water interface for enhancing the acoustic transmission because of the interface instability.Previous strategies overcoming this difficulty were limited in practical usage,as well as the wide-angle and multifrequency acoustic transmission.Here,we report a simple and practical way to obtain the wide-angle and multifrequency water-air acoustic transmission with a tunable fluid-type acoustic metasurface(FAM).The FAM has a transmission enhancement of acoustic energy over 200 times,with a thickness less than the wavelength in water by three orders of magnitude.The FAM can work at an almost arbitrary water-to-air incident angle,and the operating frequencies can be flexibly adjusted.Multifrequency transmissions can be obtained with multilayer FAMs.In experiments,the FAM is demonstrated to be stable enough for practical applications and has the transmission enhancement of over 20 dB for wide frequencies.The transmission enhancement of music signal across the water-air interface was performed to demonstrate the applications in acoustic communications.The FAM will benefit various applications in hydroacoustics and oceanography. | Zhandong Huang Shengdong Zhao Yiyuan Zhang Zheren Cai Zheng Li Junfeng Xiao Meng Su Qiuquan Guo Chuanzeng Zhang Yaozong Pan Xiaobing Cai Yanlin Song Jun Yang | 2021 | Research2021，，1： | 0 |
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