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Intensified inactivation of model and environmental bacteria by an atmospheric-pressure air-liquid discharge plasma compared with chlorination

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Journal of Environmental Sciences 2022年第7期34卷 80-90页

作者： Mingli Shao Chengsong Ye Ting li Jiaming gan Xin yu Lei Wang School of Environmental Science&Engineering Xiamen University of TechnologyXiamen 361024China College of the Environment&Ecology Xiamen UniversityXiamen 361102China

Water-borne pathogenic bacteria are always the top priority to be removed through disinfection process in water treatment due to their threat to human health. It was necessary to develop novel disinfection methods since the conventional chlorine disinfection was inefficient in inactivating chlorine-resistant bacteria, inducing the viable but non-culturable(VBNC) bacteria and forming disinfection by-products(DBPs). In this study, the inactivation of four model strains including Gram-negative(G), Gram-positive(G) and environmental samples by atmospheric-pressure air-liquid discharge plasma(ALDP) was assessed systematically. The results showed that ALDP was superior in inactivating all of the samples compared with chlorination. During 10 min ALDP treatment, the Gbacteria were completely inactivated, and the Gone was inactivated by more than 4.61 logs. The inactivation of bacteria from a campus lake and a wastewater treatment plant effluent exceeded 99.82% and 97.78%, respectively. For G-bacteria, ALDP resulted in a much lower(10~2~10~3 times) levels of VBNC cells than chlorination. ALDP could effectively remove the chlorine-resistant bacteria. More than 96.41% of the intracellular DNA and 99.99% of the extracellular DNA were removed, whereas it was only 56.35% and 12.82% for chlorination. ALDP had a stronger ability to destroy cell structure than chlorination, presumably due to the existence of ROS( ·OH, ~1Oand O). GC-MS analysis showed that ALDP produced less DBPs than chlorination. These findings provided new insights for the application of discharge plasma in water disinfection, which could be complemental or alternative to the conventional disinfection methods.

关键词： Air-liquid discharge plasma Pathogenic bacteria Viable but non-culturable state Intracellular-and extracellular genes Disinfection mechanism

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Experimental demonstration of D-band signals wireless transmission over 30 km

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Science China Technological Sciences 2025年

作者： Yi WEI Xiongwei YANG Jianjun yu Xianming ZHAO Mingxu WANG Jingwen TAN Weiping li Feng ZHAO Chengzhen BIAN Hansong MA Qinyi ZHANG Qiutong ZHANG Bing ZHANG Wen ZHOU Kaihui WANG Sicong XU Jianguo yu State Key Laboratory of ASIC and System Key Laboratory for Information Science of Electromagnetic Waves (MoE)and School of Information Science and Technology Fudan University Harbin Institute of Technology School of Automation Xi'an University of Posts and Telecommunications School of Electronic Engineering Beijing University of Posts and Telecommunications

Due to the rise of innovative technologies like artificial intelligence(AI),the Internet of Things(IoT), and telemedicine, the demand for internet traffic is rapidly increasing. In order to achieve ultra-high-speed wireless communication, many researchers are directing their efforts towards the Dband. The D-band, spanning the frequency band 110–170 GHz, has abundant spectrum resources and license-free characteristics [1,2].

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微囊藻胞外多糖降解菌的筛选及其对群体大小的影响

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湖泊科学 2025年第1期37卷 89-96页

作者：于晓丽李安丽王建东李建宏南京师范大学生命科学学院南京210023

微囊藻水华是最为常见的有害水华。在水华中的微囊藻细胞大多聚集为群体,群体状态对维持其生态优势至关重要。将微囊藻分散成单细胞状态,可削减其竞争优势,作为控制水华的手段。本研究以细菌多糖黄原胶和水华微囊藻(Microcystis flos-aq... 详细信息

微囊藻水华是最为常见的有害水华。在水华中的微囊藻细胞大多聚集为群体,群体状态对维持其生态优势至关重要。将微囊藻分散成单细胞状态,可削减其竞争优势,作为控制水华的手段。本研究以细菌多糖黄原胶和水华微囊藻(Microcystis flos-aquae)胞外多糖为唯一碳源,筛选出了5株具有利用微囊藻胞外多糖能力的细菌,通过共培养研究这些菌对单细胞状态的水华微囊藻胞外多糖和群体状态的惠氏微囊藻(***)群体状态的影响。结果显示,对于水华微囊藻,其中4株细菌能够明显地降低胞外多糖的粘度;对于惠氏微囊藻,5株细菌均能显著减小藻群体,并能抑制其生长。这5株菌经16S rDNA鉴定均属于假单胞菌属。研究结果表明,分离获得的菌株有用于防控微囊藻水华的可能性。

关键词：微囊藻群体多糖降解菌胞外多糖水华

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Antithetical impacts of deleterious LRP1B mutations in non-squamous and squamous NSCLCs on predicting benefits from immune checkpoint inhibitor alone or with chemotherapy over chemotherapy alone: retrospective analyses of the POPLAR/OAK and CHOICE-01 trial

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Science China life Sciences 2025年第1期 249-262页

作者： Jinliang Wang Wenyong Zhou yu Xu Jianchun Duan Qiaoxia Zhou Guoqiang Wang Leo li Chunwei Xu Wenxian Wang Shangli Cai Zhijie Wang Jie Wang Department of Oncology The Fifth Medical Center of Chinese PLA General Hospital Department of Thoracic Surgery Shanghai Chest HospitalSchool of MedicineShanghai Jiao Tong University Burning Rock Biotech CAMS Key Laboratory of Translational Research on Lung Cancer State Key Laboratory of Molecular OncologyDepartment of Medical OncologyNational Cancer Center/National Clinical Research Center for ancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical College Institute of Basic Medicine and Cancer (IBMC) Chinese Academy of Sciences Department of Clinical Trial The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital)

In non-small cell lung cancers,the non-squamous and squamous subtypes（nsqNSCLC and sqNSCLC） exhibit disparities in pathophysiology,tumor immunology,and potential genomic correlates affecting responses to immune checkpoint inhibitor（ICI）-based *** our inhouse training cohort（n=85）,the presence of the LRP1B deleterious mutation（LRP1B-del） was associated with longer and shorter progression-free survival（PFS） on ICIs alone in nsqNSCLCs and sqNSCLCs,respectively(Pinteraction=0.008).These results were validated using a larger public ICI cohort(n=208,Pinteractionlizumab over docetaxel(hazard ratio（HR）=0.70,P=0.046),whereas this benefit was negligible in those without LRP1B-del（HR=1.05,P=0.64）.Conversely,sqNSCLCs without LRP1B-del benefited more from atezolizumab（HR=0.60,P=0.002） than those with LRP1B-del（HR=1.30,P=0.31）.Consistent results were observed in the in-house CHOICE-01 cohort,in which nsqNSCLCs with LRP1B-del and sqNSCLCs without LRP1B-del benefited more from toripalimab plus chemotherapy than from chemotherapy alone(Pinteraction=0.008).This multi-cohort study delineates the antithetical impacts of LRP1B-del in nsqNSCLCs and sqNSCLCs on predicting the benefits from ICI alone or with chemotherapy over chemotherapy *** findings highlight the distinct clinical utility of LRP1B-del in guiding treatment choices for nsqNSCLCs and sqNSCLCs,emphasizing the necessity for a detailed analysis based on pathological subtypes when investigating biomarkers for cancer therapeutics.

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Characteristics of strong earthquake evolution around the eastern boundary faults of the Sichuan-yunnan rhombic block

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Science China Earth Sciences 2011年第11期54卷 1716-1729页

作者： CHENG Jia liU Jie gan WeiJun yu HuaiZhong li gang China Earthquake Network Center Beijing 100045 China State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing 100029 China

Based on the existing materials of fault segmentation,characteristic earthquakes,and their empirical relationships,we calculated the parameters of the fault segments,such as length,width,magnitudes of characteristic earthquakes,*** by GPS velocity field,the slip rates of these fault segments in depth were inversed using the 3-D half-space elastic dislocation *** not all of the recurrence periods and co-seismic displacements of characteristic earthquakes are known,we selected the fault segments with these two parameters known and calculated the accumulation rate of average co-seismic displacement,which shows the faults' slip rate in seismogenic ***,the slip rate in depth was compared with that in seismogenic layer,the relationship between them was obtained,and this relationship was used to get the recurrence periods and co-seismic displacements of all fault *** the studies above,we calculated the co-seismic deformation field of all the earthquakes larger than M s 6.8 from AD 1700 one by one and inversed the potential displacement in the co-seismic deformation ***,we divided the potential displacement by the slip rate from GPS inversion to get the influences of these fault segments,added the influences into the elapsed time of the characteristic earthquakes,and obtained the earthquake hazard degree of all the segments we studied in the form of the ratio of elapsed time to recurrence period;so,we name the ratio as the Impending Earthquake Risk (IER).Historical earthquake cases show that the fault segment is in safety when the IER is less than 1 but in danger after the IER becomes larger than *** 2009,the IER is larger than 1 on the following segments,1.35 on the Tagong segment of Xianshuihe fault,1 on the Menggu-Dongchuan segment,1.04 on the Dongchuan-Xundian segment,and 1.09 on the Yiliang-Chengjiang segment of Xiaojiang fault.

关键词： eastern boundary faults of Sichuan-yunnan rhombic block fault segment characteristic earthquake recurrence period earthquake Interaction Impending Earthquake Risk

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Design of Fe–Mn–Ag Alloys as Potential Candidates for Biodegradable Metals

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Acta Metallurgica Sinica(English Letters) 2018年第6期31卷 584-590页

作者： Ruo-yu liu Ran-gan He li-Qun Xu Sheng-Feng Guo Faculty of Materials and Energy Southwest University

In this work,a series of biodegradable pure iron,Fe–30Mn and Fe–30Mn–Ag alloys were developed by using a rapid solidification technology.A fine a-Fe dendrite was formed in pure iron,resulting in a high compressive yield strength of above 300 *** Fe–30Mn alloy doped with only 1%Ag exhibited a significant increase in the degradation rate in simulated body fluid due to the precipitation of Ag-rich particles in alloy matrix and the induction of the microgalvanic *** addition,the novel Fe–30Mn–Ag alloy also exhibited a good magnetic compatibility and offered a closely approaching requirement for biodegradable medical applications.

关键词： Biodegradable metals Fe-based alloys Corrosion rate Magnetic compatibility

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High Performance Long Chain Polyamide/Calcium Silicate Whisker Nanocomposites and the Effective Reinforcement Mechanism

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Chinese Journal of Polymer Science 2016年第8期34卷 991-1000页

作者： li-li Wang 董侠 Xing-rui Wang gan-yu Zhu Hui-quan li Du-jin Wang Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Engineering PlasticsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Green Process and Engineering and National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

PA1012/calcium silicate whisker nanocomposites with contents of whisker ranging from 10 wt% to 40 wt%, are prepared by twin screw extruder without any additions of coupling agent. The effect of whisker on the matrix is analyzed by the studies of morphology, the mechanical properties, water absorption and thermal stabilities. SEM micrographs obviously demonstrate, even under the high filler content of 40 wt% and without surface treatment, calcium silicate whisker can be homogeneously dispersed in polyamide, directly leading to the enhanced mechanical properties. The mechanism of higher efficiency of reinforcement is needle-like shape whisker, having access to be intercalated, and mutual affinity caused by hydrogen bonding interaction between carbonyl group in polyamide chain and hydroxyl group in whisker surface. Both aspects attach matrix with excellent stress-transfer properties. In addition, with the assistance of whisker, the nanocomposite favors an improved water absorption as well as thermal stability, which is intimately associated with physical performance.

关键词： PA1012 Calcium silicate whisker No coupling agent Homogeneous dispersion Enhanced properties.

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食道心房调搏对阵发性室上性心动过速诊断的价值

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中华全科医学 2017年第10期15卷 1756-1758页

作者：徐玮胡司淦黄宇理吴婷玉王本芳蚌埠医学院第一附属医院心血管科心脏电生理室安徽蚌埠233004

目的本研究旨在探讨食道心房调搏对阵发性室上性心动过速(PSVT)的诊断,确定其具体分型,为进一步的射频消融手术提供帮助。方法选取经食道心房调搏诱发出PSVT患者61例,测定食道导联的R-P’E、P’E-R时限,Vl导联的R-P’时限,P’波方向,和... 详细信息

目的本研究旨在探讨食道心房调搏对阵发性室上性心动过速(PSVT)的诊断,确定其具体分型,为进一步的射频消融手术提供帮助。方法选取经食道心房调搏诱发出PSVT患者61例,测定食道导联的R-P’E、P’E-R时限,Vl导联的R-P’时限,P’波方向,和射频消融术后的结果进行比较。结果 (1)射频消融术后确定的分型如下:慢-快型房室结折返性心动过速[AVNRT(S-F)]25例,快-慢型房室结折返性心动过速[AVNRT(F-S)]1例,顺向型房室折返性心动过速(O-AVRT)左侧旁道24例,右侧旁道7例,双旁道1例;房性心动过速(AT)3例。(2)食道心房调搏发现R-P’E80 ms的患者多为O-AVRT。R-P’EP’E-R的患者多为AT。(3)左侧旁道均为V1导联R-P’>R-P’E,右侧旁道多为V1导联R-P’

关键词：食道心房调搏阵发性室上性心动过速

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Photonic crystal cavities and integrated optical devices

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Science China(Physics,Mechanics & Astronomy) 2015年第11期58卷 11-22页

作者： gan lin li Zhiyuan Laboratory of Optical Physics Institute of Physics Chinese Academy of Sciences

This paper gives a brief introduction to our recent works on photonic crystal(Ph C) cavities and related integrated optical structures and devices. Theoretical background and numerical methods for simulation of Ph C cavities are first presented. Based on the theoretical basis, two relevant quantities, the cavity mode volume and the quality factor are discussed. Then the methods of fabrication and characterization of silicon Ph C slab cavities are introduced. Several types of Ph C cavities are presented, such as the usual L3 missing-hole cavity, the new concept waveguide-like parallel-hetero cavity, and the low-index nanobeam cavity. The advantages and disadvantages of each type of cavity are discussed. This will help the readers to decide which type of Ph C cavities to use in particular applications. Furthermore, several integrated optical devices based on Ph C cavities, such as optical filters, channel-drop filters, optical switches, and optical logic gates are described in both the working principle and operation characteristics. These devices designed and realized in our group demonstrate the wide range of applications of Ph C cavities and offer possible solutions to some integrated optical problems.

关键词： photonic crystal cavities optical filter optical switch optical logic gates

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Review on effect of applied internal cooling source and vibration on metal solidification process

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Journal of Iron and Steel Research International 2023年第6期30卷 1059-1072页

作者： yu-chao Yao Miao liu Zhong-qiu liu Bao-kuan li Yong gan Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819LiaoningChina School of Metallurgy Northeastern UniversityShenyang 110819LiaoningChina China Iron&Steel Research Institute Group Co. Ltd.Beijing 100081China

Advancements in metallurgical technology have led to the emergence of high-performance requirements for metal materials,like high uniformity,high purity,and superfine *** has resulted in the development and application of internal cooling source(ICS),vibrational,and vibrational internal cooling source methods in metal solidification processes to afford products with refined crystal grains and large proportions of equiaxed *** methods have gradually been introduced into laboratories and some steel mills over the past few ***,there are few successful industrial applications of these methods,as there is no comprehensive understanding of their control theories and ***,the development,basic principles,and classifications of the three types of methods are summarized,and their impact on the solidification of molten metals and the morphology of solid products is *** addition,experimental and numerical simulation-based researches on each type of method are reviewed and their prospects for applications are briefly discussed to control metal ***,detailed future perspectives are provided on vibratory strip feeding,ICS,and pulsed magneto-oscillation ***,it will serve as a reference for future studies of the application of these and related methods in metal solidification processes.

关键词： Internal cooling source Vibration Solidification Strip feeding Grain refinement

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