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Nonlinear optical properties of carboxyl-functionalized graphene oxide for dissipative soliton resonance pulse generation

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Journal of Materiomics 2023年第4期9卷 642-650页

作者： Han Pan Hongwei Chu Zhongben Pan ying Li Shengzhi Zhao Dechun Li School of Information Science and Engineering Key Laboratory of Laser and Infrared System of Ministry of EducationShandong UniversityQingdao266237China Key Laboratory of Colloid and Interface Chemistry of State Education Ministry School of Chemistry and Chemical EngineeringShandong UniversityJinan250100China

Here,we investigated the nonlinear optical(NLO)characteristics of carboxyl-functionalized graphene oxide(GO-COOH)in the near-infrared(NIR)*** results revealed that GO-COOH samples exhibit strong saturable absorption at low pump levels and a gradual transition to reverse saturable absorption(RSA)with increasing pump *** the saturable absorber(SA)by depositing the GO-COOH on the side-polished fiber(SPF)was employed in Yb-and Er-doped fiber *** ultrashort pulses operating in the dissipative soliton(DS)and conventional soliton(CS)regimes were obtained with pulse widths of 26.6 ps and 968 fs,***,the dissipative soliton resonance(DSR)phenomenon caused by the RSA of GO-COOH was also observed with increasing pump *** high-stable DSR mode-locked pulses with the maximum pulse energy of 1.91 nJ and 0.74 nJ were obtained in YDFL and EDFL *** results not only reveal the potentiality of GO-COOH in ultrafast photonics applications but also open a new avenue to explore high-pulse-energy laser sources based on twodimensional materials.

关键词： Carboxyl-modified graphene oxide First-principles calculation Reverse saturable absorption Ultrafast fiber laser Saturable absorber Dissipative soliton resonance

典型非均质岩溶地下水污染治理新思路及关键技术

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地下水 2024年第3期46卷 77-79页

作者：罗林郑明英王万金贵州省地质矿产勘查开发局111地质大队贵州贵阳550081

地下河系统具有“快补快排”、流量动态变化剧烈等特征,岩溶发育的不均匀性和地下水径流的集中性,给传统地下水污染治理造成极大困难和风险。本文以贵州典型岩溶地下水系统为研究单元,在分析类似非均质条件下岩溶地下水污染治理工程思... 详细信息

地下河系统具有“快补快排”、流量动态变化剧烈等特征,岩溶发育的不均匀性和地下水径流的集中性,给传统地下水污染治理造成极大困难和风险。本文以贵州典型岩溶地下水系统为研究单元,在分析类似非均质条件下岩溶地下水污染治理工程思路、措施和成效的基础上,从原生的岩溶水文地质条件出发,以经典地下水动力学为基础,遵循地下水补给、径流和排泄特征,研究典型非均质岩溶地下水污染治理新思路及关键技术。提出:通过改变地下河系统补给、径流和排泄条件,可达到减少地下河出口流量的目标,治理工程主要是小规模的地下和地表“线性”工程,不占用基本农田、不破坏植被,对研究区内的生态环境影响极小。可采取上游“引排”、中游“排水隧洞+地下水导流钻孔”、下游“集中收集-处理”的治理新思路。该治理新思路的成效能够达到经济、生态环境的“双赢”。

关键词：岩溶地下水污染治理关键技术

苏云金芽胞杆菌G033A对三种赤眼蜂寄生番茄潜叶蛾能力的影响

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Mobile energy storage technologies for boosting carbon neutrality

中国生物防治学报 2024年第3期40卷 524-531页

作者：蒋正雄陈恒孙英周顺文张金龙陈国华朱清清张晓明云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室昆明 650201 云南农业大学植物保护学院/云南生物资源保护与利用国家重点实验室昆明 650201 瓦赫宁根大学与研究中心温室园艺研究所布莱斯维克2265ZG

为探究苏云金芽胞杆菌G033A(Bt G033A)对番茄潜叶蛾不同龄期幼虫的毒力大小及对赤眼蜂寄生番茄潜叶蛾能力的影响,本研究采用浸叶法和饲料混毒法分别对番茄潜叶蛾及三种赤眼蜂进行处理,测定了Bt G033A对番茄潜叶蛾不同龄期幼虫和三种赤... 详细信息

为探究苏云金芽胞杆菌G033A(Bt G033A)对番茄潜叶蛾不同龄期幼虫的毒力大小及对赤眼蜂寄生番茄潜叶蛾能力的影响,本研究采用浸叶法和饲料混毒法分别对番茄潜叶蛾及三种赤眼蜂进行处理,测定了Bt G033A对番茄潜叶蛾不同龄期幼虫和三种赤眼蜂成虫的室内毒力,同时分析Bt G033A对三种赤眼蜂寄生量及功能反应的影响.结果表明,Bt G033A对番茄潜叶蛾 1龄幼虫、2龄幼虫、3龄幼虫、4 龄幼虫的LC50分别为 25.381、19.537、17.406 和 15.772 g/L,而对三种赤眼蜂均为低毒.在Bt G033A田间推荐浓度处理后,虽然玉米螟赤眼蜂、螟黄赤眼蜂、松毛虫赤眼蜂对番茄潜叶蛾卵的寄生功能反应模型仍符合Holling Ⅱ型,但三种赤眼蜂的寄生能力均有所降低.其中,玉米螟赤眼蜂在药剂对照组的寄生量(25粒/皿:18.600 粒)、处理猎物时间(0.012 d)、控害效能(84.833)、日寄生上限(83.333 粒)和搜寻效应均表明其对番茄潜叶蛾的寄生能力强于螟黄赤眼蜂和松毛虫赤眼蜂.此外,在药剂处理后,玉米螟赤眼蜂各项寄生参数同样优于其他两种赤眼蜂.因此,玉米螟赤眼蜂可作为番茄潜叶蛾的优选寄生性天敌之一,并可联合Bt G033A对番茄潜叶蛾进行协同防控.

关键词：苏云金芽胞杆菌番茄潜叶蛾赤眼蜂寄生功能搜寻效应

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The Innovation 2023年第6期4卷 132-151页

作者： Chenyang Zhang ying Yang Xuan Liu Minglei Mao Kanghua Li Qing Li Guangzu Zhang Chengliang Wang School of Integrated Circuits Wuhan National Laboratory for Optoelectronics(WNL 0)Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Wenzhou Advanced Manufacturing Institute Huazhong University of Science and TechnologyWenzhou 325035China

Carbon neutrality calls for renewable energies,and the efficient use of renewable energies requires energy storage mediums that enable the storage of excess energy and reuse after spatiotemporal *** with traditional energy storage technologies,mobile energy storage technologies have the merits of low cost and high energy conversion efficiency,can be flexibly located,and cover a largerange from miniature to large systems and from high energy density to high power density,although most of them still face challenges or technical *** this review,we provide an overview of the opportunities and challenges of these emerging energy storagetechnologies(induding rechargeable batteries,fuel cells,and electrochemical and dielectric capacitors).Innovative materials,strategies,and technologies are ***,the future directions are *** hope this review will advance the development of mobile energy storage technologies and boost carbon neutrality.

关键词： neutral boosting energy

核磁共振氢谱法测定注射用微球专用溶剂中硅油的含量

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山东化工 2024年第3期53卷 138-140,145页

作者：马佳慧夏昀卿沈莉薛英周凤梅刘万卉许丽晓烟台大学药学院新型制剂与生物技术药物研究山东省高校协同创新中心分子药理和药物评价教育部重点实验室(烟台大学) 山东烟台264005 山东绿叶制药有限公司先进药物递释系统全国重点实验室山东烟台264003

目的:建立测定注射用微球专用溶剂中硅油含量的定量核磁共振氢谱(qHNMR)法。方法:采用Bruker Avance NEO 600型核磁共振波谱仪测定核磁共振氢谱(^(1)H NMR),脉冲序列zg30,弛豫延迟时间15 s,采样次数16,测定温度25℃,以咖啡因为内标,不... 详细信息

目的:建立测定注射用微球专用溶剂中硅油含量的定量核磁共振氢谱(qHNMR)法。方法:采用Bruker Avance NEO 600型核磁共振波谱仪测定核磁共振氢谱(^(1)H NMR),脉冲序列zg30,弛豫延迟时间15 s,采样次数16,测定温度25℃,以咖啡因为内标,不加四甲基硅烷(TMS)的氘代氯仿为溶剂,对注射用微球专用溶剂中的硅油进行定量研究,以硅油定量峰与内标定量峰面积之比对其含量(μg)绘制标准曲线,计算注射用微球专用溶剂中硅油含量。结果:硅油含量在6~100μg范围内线性关系良好,r=0.9999,低、中、高浓度的平均回收率为97.8%(n=9),重复性RSD为9.8%。结论:该方法操作简单快捷、灵敏度高、结果准确,可用于注射用微球专用溶剂中硅油含量的测定。

关键词：定量核磁共振氢谱法注射用微球专用溶剂硅油含量测定标准曲线法

The MKK3–MPK7 cascade phosphorylates ERF4 and promotes its rapid degradation to release seed dormancy in Arabidopsis

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Molecular Plant 2023年第11期16卷 1743-1758页

作者： Xi Chen Qiujia Li Ling Ding Shengnan Zhang Siyao Shan Xiong Xiong Wenhui Jiang Bo Zhao Liying Zhang ying Luo Yiming Lian Xiuqin Kong Xiali Ding Jun Zhang Chunli Li Wim J.J.Soppe Yong Xiang Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China Center for Crop Science College of AgronomyQingdao Agricultural UniversityQingdao 266109China School of Petrochemical Engineering Lanzhou University of TechnologyLanzhou 730050China Hou Ji Laboratory in Shanxi Province Academy of AgronomyShanxi Agricultural UniversityTaiyuan 030031China State Key Laboratory of Silkworm Genome Biology Southwest UniversityChongqing 400715China Rijk Zwaan 2678 ZG De Lierthe Netherlands

Seeds establish dormancy to delay germination until the arrival of a favorable growing *** this study,we identify a fate switch comprised of the MKK3–MPK7 kinase cascade and the ethylene response factor ERF4 that is responsible for the seed state transition from dormancy to *** show that dormancy-breaking factors activate the MKK3–MPK7 module,which affects the expression of some a-EXPANSIN(EXPA)genes to control seed ***,we identify a direct downstream substrate of this module,ERF4,which suppresses the expression of these EXPAs by directly binding to the GCC boxes in their exon *** activated MKK3–MPK7 module phosphorylates ERF4,leading to its rapid degradation and thereby releasing its inhibitory effect on the expression of these ***,our work identifies a signaling chain consisting of protein phosphorylation,degradation,and gene transcription,by which the germination promoters within the embryo sense and are activated by germination signals from ambient conditions.

关键词： seed dormancy dormancy breaking seed germination MKK3 MPK7 ERF4 phosphorylation protein degradation DNA binding

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中等强度噪声暴露对幼年豚鼠听觉中枢的影响

听力学及言语疾病杂志 2023年第1期31卷 44-48页

作者：林莹戴晨逸苏婷卉应航徐飞浙江中医药大学医学技术与信息工程学院杭州310053

目的探讨中等强度白噪声暴露对幼年豚鼠听觉中枢及听觉行为的影响,为研究噪声的隐匿性危害提供参考。方法选取10只3周龄豚鼠,随机分成实验组和对照组,每组5只,实验组进行每日12小时85 dB SPL白噪声暴露,连续4周,于暴露结束当日和暴露结... 详细信息

目的探讨中等强度白噪声暴露对幼年豚鼠听觉中枢及听觉行为的影响,为研究噪声的隐匿性危害提供参考。方法选取10只3周龄豚鼠,随机分成实验组和对照组,每组5只,实验组进行每日12小时85 dB SPL白噪声暴露,连续4周,于暴露结束当日和暴露结束后2周进行畸变产物耳声发射(DPOAE)、听性脑干反应(ABR)、噪声间隙听性脑干反应(GIN-ABR)和听觉惊跳反射(ASR)测试;对照组在安静环境下饲养至7周龄进行上述测试,比较两组结果。结果暴露结束当日,实验组在16 kHz的DPOAE幅值显著降低(P<0.01),暴露结束后2周恢复。暴露结束当日,实验组12 kHz(P<0.05)、16 kHz(P<0.01)的ABR阈值显著升高,暴露结束后2周恢复;未发生阈移的6 kHz(P<0.05)、8 kHz(P<0.01)波Ⅳ幅值显著降低,且2周后未恢复(P<0.05)。暴露结束后2周,实验组4 ms间隙的GIN-ABR波Ⅳ幅值仍显著小于对照组(P<0.05),且实验组100 dB SPL刺激声的ASR幅值有减小趋势。结论85 dB SPL白噪声暴露未引起幼年豚鼠永久性阈移,但成年后其脑干听反应活动减弱,其阈上听功能(时域处理)也有所减弱。

关键词：噪声暴露听觉中枢可塑性响度感知时域处理

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豚鼠发育不同时期噪声间隙听性脑干反应研究

中华耳科学杂志 2023年第5期21卷 677-684页

作者：张宁林莹徐飞浙江中医药大学杭州310053

目的观察豚鼠在不同发育时期噪声间隙听性脑干反应(gap in noise auditory brainstem response,GIN ABR)变化特点。通过对短纯音听性脑干反应(tone burst auditory brainstem response,tb-ABR)和GIN ABR的比较,探讨听觉系统发育对GIN ABR的影响,为该测试的临床应用奠定基础。方法对2周龄及9周龄豚鼠进行不同频率(8k、12k、16k、24kHz)tb-ABR及不同无声间隙时长(0、1、2、4、8、16、32ms)GIN ABR测试,分别观察tb-ABR阈值,各波潜伏期及Ⅰ、Ⅲ、Ⅳ波幅值,GIN ABR各波的潜伏期偏移值、幅值及恢复率。结果9周龄豚鼠tb-ABR 8kHz阈值低于2周龄豚鼠(P<0.01),80dB SPL及50dB SPL刺激强度下Ⅲ波潜伏期短于2周龄豚鼠(P<0.05),80dB SPL刺激强度下各频率Ⅰ波幅值显著低于2周龄豚鼠(P<0.05)。无论是9周龄还是在2周龄豚鼠中GIN ABR潜伏期偏移值和幅值差均随着无声间隙时长的增加而下降,各波恢复率及由NB2诱发的波幅值随着无声间隙时长的增加而增加。在无声间隙时长为2、8、16ms时,9周龄豚鼠P3潜伏期偏移值明显短于2周龄豚鼠(P<0.05)。9周龄豚鼠在2~16ms无声间隙时长内P4波的恢复率明显高于2周龄豚鼠(P<0.05)。结论2周龄与9周龄豚鼠tb-ABR和GIN ABR反应存在差异,可用于听觉功能发育研究模型,GIN ABR测试可作为评估听觉功能的补充工具。

关键词：豚鼠短纯音噪声间隙听性脑干反应发育

Glioma stem cells and neural stem cells respond differently to BMP4 signaling

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Cell Regeneration 2022年第1期11卷 374-388页

作者： Xin-Xin Han Chunhui Cai Li-Ming Yu Min Wang Wenhan Yang Dai-Yu Hu Jie Ren Lu-ying Zhu Jia-Jia Deng Qing-Qing Chen Hua He Zhengliang Gao Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases Shanghai Stomatological Hospital&School of StomatologyFudan UniversityShanghai 200001China Yangzhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center) Tongji University School of MedicineShanghai 200072China Institute of Geriatrics(Shanghai University) Affiliated Nantong Hospital of Shanghai University(The Sixth People’s Hospital of Nantong)School of MedicineShanghai UniversityNantongChina School of Medicine Jiax-ing UniversityJiaxingChina Department of Neurosurgery Changzheng HospitalSecond Military Medical UniversityShanghaiChina Department of Neurosurgery Third Affiliated Hospital of Second Military Medical UniversityShanghaiChina

Malignant glioma is a highly heterogeneous and invasive primary brain tumor characterized by high recurrence rates,resistance to combined therapy,and dismal *** stem cells(GSCs)are likely responsible for tumor progression,resistance to therapy,recurrence,and poor prognosis owing to their high self-renewal and tumorigenic *** a family member of BMP signaling,bone morphogenetic protein4(BMP4)has been reported to induce the differentiation of GSCs and neural stem cells(NSCs).However,the molecular mechanisms underlying the BMP4-mediated effects in these two cell types are *** this study,we treated hGSCs and hNSCs with BMP4 and com-pared the phenotypic and transcriptional changes between these two cell ***,we found that the growth of hGSCs was greatly inhibited by BMP4,but the same treatment only increased the cell size of *** the RNA sequencing results showed that BMP4 treatment evoked significantly transcriptional changes in both hGSCs and hNSCs,the profiles of differentially expressed genes were distinct between the two groups.A gene set that specifically targeted the proliferation and differentiation of hGSCs but not hNSCs was enriched and then validated in hGSC *** results suggested that hGSCs and hNSCs responded differently to BMP4 *** and investigating different responses between hGSCs and hNSCs will benefit finding partner factors working together with BMP4 to further suppress GSCs proliferation and stemness without disturbing NSCs.

关键词： Glioma stem cells BMP4 Neural stem cells Cell differentiation Cell proliferation