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Efficient removal of natural organo-chromium(Ⅲ)through selfcirculating decomplex and immobilization with nanoscale zerovalent iron

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Nano Research 2024年第1期17卷 364-371页

作者： zhicheng dong Yunyun Xu Can Wu Jin Chao Chen Tian Zhang Lin School of Metallurgy and Environment Central South UniversityChangsha 410083China Chinese National Engineering Research Center for Control&Treatment of Heavy Metal Pollution Changsha 410083China College of Ecology and Environment Chengdu University of TechnologyChengdu 610059China School of Environment and Energy The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters(Ministry of Education)South China University of TechnologyGuangzhou 510006China

Organo-chromium(III)complex is one of the chromium contaminant species,which would transform to high-toxic Cr(VI)during migrating in the *** natural organo-chromium(III)(NOCr)is difficult to remove by traditional degradation or precipitation methods,due to its high stability and ***,we demonstrated a novel NOCr removing method by transforming it to certain structures similar to Cr-Fe minerals in nature,through a self-circulating decomplex and immobilization mechanism with nano zero-valent iron(nZVI).Taking chromium glycinate(Cr-Gly)as a probe,nZVI showed a high Cr removal efficiency of 99.4%under ambient *** removal process included three stages of adsorption,decomplexation,and ***-Gly was first adsorbed on the surface of nZVI by chemisorption of the oxide ***,the adsorbed Cr-Gly was decomplexed and oxidized to Cr(VI)by·OH and 1O_(2),which were generated from molecular oxygen activated by ***,the released Cr(VI)could be in-situ adsorbed and re-reduced to Cr(III),which was further immobilized in form of Cr-O-Fe *** the Cr-O-Fe complexing structure was similar to that of Cr-Fe minerals(such as chromohercynite)in nature,this work explored a novel and efficient NOCr removing method that was potential to weaken chromium pollution in the environment.

关键词： organo-chromium(III) zero-valent iron adsorption decomplexation Cr immobilization

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Refinement of α′Martensite by Oxygen in Selective Laser Melted Ti-6Al-4V

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Acta Metallurgica Sinica(English Letters) 2024年第5期37卷 777-792页

作者： Hasfi FNurly Jinhu Zhang Dechun Ren Yusheng Cai Haibin Ji dongsheng Xu zhicheng dong Hao Wang Qingmiao Hu Jiafeng Lei Rui Yang School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials and Chemistry/Interdisciplinary Centre for Additive Manufacturing University of Shanghai for Science and TechnologyShanghai 200093China Centre for Adaptive System Engineering ShanghaiTech UniversityShanghai 201210China

Oxygen is crucial in influencing the microstructure evolution of selective laser melted(SLMed)Ti–6Al–4V,significantly impacting its applicability in various ***,this study investigates the influnce of oxygen on microstructure evolution,particularlyα′martensite transformation and refinement *** alloys,Ti–6Al–4V–xO(x=0.11,0.16,0.21,and 0.25 wt%),were fabricated by the SLM *** martensite start temperature(M_(s))of Ti–6Al–4V,as evaluated by computation,is 656.8°C,and oxygen was found to increase the M_(s) by about 10°C per 0.1 wt%.The SLMed alloy samples exhibit[001]_(β)growth texture along the build *** analysis of martensite morphology suggests internal twinning on{1011}planes as the lattice invariant strain,which becomes more predominant with increasing oxygen *** of α′martensite plates by oxygen is due to increased lattice distortion,reduced prior β grain size,and oxygen segregation toβgrain *** findings contribute to improving the understanding of the effect of oxygen on the transformation mechanism ofα′martensite during SLM of Ti–6Al–4V.

关键词： Selective laser melting α′Martensite Martensite start temperature Oxygen Ti-6Al-4V

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拟南芥和大豆中用于RNA研究的细胞核制备和优化

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植物生理学报 2024年第5期60卷 823-836页

作者：何思豪苏京董志诚刘敏朱家富广东省植物适应性与分子设计重点实验室广州市作物基因编辑重点实验室分子遗传与进化创新中心广州大学生命科学学院广州510006

本研究旨在优化植物细胞核提取方法,以支持对核RNA完整性要求严格的转录组研究,如新生RNA检测方法、单细胞核RNA测序及其他组学技术。核心实验基于改进的Honda提取液配方,通过结合甘油、蔗糖和己二醇等三种渗压剂,并在此基础上添加或不... 详细信息

本研究旨在优化植物细胞核提取方法,以支持对核RNA完整性要求严格的转录组研究,如新生RNA检测方法、单细胞核RNA测序及其他组学技术。核心实验基于改进的Honda提取液配方,通过结合甘油、蔗糖和己二醇等三种渗压剂,并在此基础上添加或不添加聚蔗糖和葡聚糖T-40(Ficoll&Dextran T-40),形成六种不同的细胞核提取液。这些提取液被用于评估其在拟南芥和大豆样本中提取细胞核的效果。结果表明,含有己二醇的提取液在提取细胞核RNA及蛋白质方面表现出最高的得率,此外己二醇结合Ficoll&Dextran T-40能显著增强核RNA的纯度和完整性。此项研究为植物科学领域的组学研究提供了一种高效的细胞核提取方法,具有重要的参考价值。

关键词：细胞核RNA 拟南芥大豆核提取缓冲液己二醇

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反无人机对炮兵阵地侦察监视的对策分析

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舰船电子工程 2024年第3期44卷 9-12,45页

作者：饶燕董志成陆军炮兵防空兵学院合肥230031

近年来,世界各国不断采购各种类型无人机,着力强化无人机系统部署,尤其是侦察监视无人机,如何就反无人机对炮兵阵地侦察监视展开研究,成为当前军事研究者思考越来越多的问题。因此,文章从无人机对炮兵阵地侦察监视常用方法手段出发,分... 详细信息

近年来,世界各国不断采购各种类型无人机,着力强化无人机系统部署,尤其是侦察监视无人机,如何就反无人机对炮兵阵地侦察监视展开研究,成为当前军事研究者思考越来越多的问题。因此,文章从无人机对炮兵阵地侦察监视常用方法手段出发,分析炮兵阵地被无人机侦察监视后带来的影响并对炮兵阵地反无人机侦察监视当前现实状况进行总结,从而提出炮兵阵地反无人机侦察监视的对策与措施。

关键词：反无人机炮兵阵地侦察监视

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蒲公英抗膀胱癌潜在机制的研究进展

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中国实验方剂学杂志 2024年第7期30卷 290-298页

作者：左明顺董志诚左玉陈洪川蔡宏佳吴丛丛艾小渝张能遵义医科大学附属医院贵州遵义563000 济南历下区人民医院济南250013

膀胱癌(BCa)是泌尿系统最常见的恶性肿瘤,其发病率逐年上升。目前对所有可切除的非转移性肌层浸润性膀胱癌患者,强烈建议行根治性膀胱切除术+双侧盆腔淋巴结清扫,但其术后仍面临着复发、转移、死亡的风险。近年来,晚期和转移性BCa患者... 详细信息

膀胱癌(BCa)是泌尿系统最常见的恶性肿瘤,其发病率逐年上升。目前对所有可切除的非转移性肌层浸润性膀胱癌患者,强烈建议行根治性膀胱切除术+双侧盆腔淋巴结清扫,但其术后仍面临着复发、转移、死亡的风险。近年来,晚期和转移性BCa患者在新诊断BCa患者中的比例不断升高。虽然目前的治疗模式多样,但由于其有效性低及不良反应较大,往往难以取得显著疗效,导致晚期和转移性BCa患者生存率仍然较低。因此BCa的治疗仍然面临巨大挑战,迫切需要发现一种有效的新型抗肿瘤药物。随着医疗水平的提升,中药药物在BCa患者治疗中显示出极大优势。中药温和,易接受,可通过多途径、多方式、多靶点抑制肿瘤进展,从而发挥抗癌作用。蒲公英是一种药食同源植物,具有抗菌、抗炎、抗氧化、抗肿瘤、保肝利胆、降糖和增强免疫力等多种生物活性,其已在乳腺癌、肝癌、胃癌、舌癌和肺癌等癌症中显示出明确的抗癌作用。通过回顾既往国内外研究,该文对蒲公英提取物通过诱导细胞发生自噬、诱导细胞凋亡、抑制细胞迁移与侵袭、调节细胞的周期和增殖、调节细胞代谢、抑制肿瘤血管生成、联合化疗药物的作用、调控相关信号通路的转导的机制进行总结,系统阐述蒲公英抗BCa的潜在作用机制,以期为BCa的研究和治疗提供一定的理论依据。

关键词：蒲公英膀胱癌泌尿系统抗癌作用作用机制

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High-strength hydrogels:Fabrication,reinforcement mechanisms,and applications

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Nano Research 2023年第2期16卷 3475-3515页

作者： Heyuan Huang zhicheng dong Xiaoyang Ren Ben Jia Guowei Li Shaowen Zhou Xin Zhao Wenzhi Wang School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China School of Civil Aviation Northwestern Polytechnical UniversityXi’an 710072China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Department of Periodontology College of StomatologyXi’an Jiaotong UniversityXi’an 710049China

With the continuous appearance and expansion of high-strength hydrogels in emerging fields such as industry,medicine,and green development,the synthesis and application of high-strength hydrogels have developed dramatically and achieved remarkable results from the aspects of raw materials,preparation methods,and reinforcement ***,there is still a lack of systematic reviews on high-strength ***,we first discuss the advantages of natural and synthetic materials,and the characteristics of high-strength hydrogels prepared from different raw materials;we then expound on the influence mechanism of physical interactions or chemical bonds on the strength of the hydrogel from three aspects:physical cross-linking,chemical cross-linking,and dynamic chemical cross-linking;at last,we systematically expound the strengthening strategies,including double network/multi-network,nanocomposite,topology,supramolecular polymerization,and characteristics and strengthening mechanisms of such high-strength *** addition,based on the development status of high-strength hydrogels,we combined the application requirements and the existing drawbacks of high-strength hydrogels to propose their possible development directions in the future.

关键词： high-strength hydrogels raw materials for hydrogels cross-linking methods strengthening strategies applications

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Scutellarin prevents acute alcohol-induced liver injury via inhibiting oxidative stress by regulating the Nrf2/HO-1 pathway and inhibiting inflammation by regulating the AKT,p38 MAPK/NF-κB pathways

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第7期24卷 617-631页

作者： Xiao ZHANG zhicheng dong Hui FAN Qiankun YANG Guili YU Enzhuang PAN Nana HE Xueqing LI Panpan ZHAO Mian FU Jingquan dong Jiangsu Key Laboratory of Marine Bioresources and Environment/Co-Innovation Center of Jiangsu Marine Bio-Industry Technology/Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening College of PharmacyJiangsu Ocean UniversityLianyungang 222005China Department of Oncology the Second People's Hospital of LianyungangLianyungang 222000China Institute of Neuroscience the First People's Hospital of LianyungangLianyungang 222000China

Alcoholic liver disease(ALD)is the most frequent liver disease worldwide,resulting in severe harm to personal health and posing a serious burden to public *** on the reported antioxidant and anti-inflammatory capacities of scutellarin(SCU),this study investigated its protective role in male BALB/c mice with acute alcoholic liver injury after oral administration(10,25,and 50 mg/kg).The results indicated that SCU could lessen serum alanine aminotransferase(ALT)and aspartate aminotransferase(AST)levels and improve the histopathological changes in acute alcoholic liver;it reduced alcohol-induced malondialdehyde(MDA)content and increased glutathione peroxidase(GSH-Px),catalase(CAT),and superoxide dismutase(SOD)***,SCU decreased tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),and IL-1βmessenger RNA(mRNA)expression levels,weakened inducible nitric oxide synthase(iNOS)activity,and inhibited nucleotide-binding oligomerization domain(NOD)-like receptor protein 3(NLRP3)inflammasome ***,SCU suppressed cytochrome P450 family 2 subfamily E member 1(CYP2E1)upregulation triggered by alcohol,increased the expression of oxidative stress-related nuclear factor erythroid 2-related factor 2(Nrf2)and heme oxygenase-1(HO-1)pathways,and suppressed the inflammation-related degradation of inhibitor of nuclear factor-κB(NF-κB)-α(IκBα)as well as activation of NF-κB by mediating the protein kinase B(AKT)and p38 mitogen-activated protein kinase(MAPK)*** findings demonstrate that SCU protects against acute alcoholic liver injury via inhibiting oxidative stress by regulating the Nrf2/HO-1 pathway and suppressing inflammation by regulating the AKT,p38 MAPK/NF-κB pathways.

关键词： Scutellarin Oxidative stress Alcoholic liver disease Inflammation

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Effect of Bimodal Quasicrystal Phase on the Dynamic Recrystallization of Mg–Zn–Gd Alloy during High-Pressure Torsion

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1128-1134页

作者： Ping Li Shuangwu Xia Junfu dong Liangwei Dai zhicheng Luo Kemin Xue School of Material Science and Engineering Hefei University of TechnologyHefei230009China

The Mg–Zn–Gd alloy with quasicrystal icosahedral phase was processed by high-pressure torsion (HPT). The effect of bimodal I-phase on the dynamic recrystallization was analyzed by transmission electron microscopy. The results showed that the block I-phase can stimulate obvious particle-stimulated nucleation and dynamic recrystallization (DRX) grains were preferentially formed after HPT for 5 turns, while the granular I-phase only promoted the generation of sub-grains. The orientation relationship was determined as twofold//[1210] and fivefold//(0002)_(Mg). Moreover, after HPT for 9 turns, the DRX grains induced by block I-phase appeared to grow up and coarsened. Compared with block I-phase, the grains induced by granular I-phase presented much smaller size and distributed more homogeneous due to the strong pinning effect.

关键词： High-pressure torsion(HPT)-Quasicrystal phase Dynamic recrystallization Particle-stimulated nucleation Orientation relationship

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一款400μm^(2)用于极短距离接收机具有中频补偿的56 Gb/s PAM4反相器型连续时间线性均衡器

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集成电路与嵌入式系统 2024年第3期24卷 27-34页

作者：王梦豪赵潇腾董志成张淼刘术彬朱樟明西安电子科技大学西安710071

高速极短距离有线数据接口是芯粒间互连的重要技术方案。传统的基于电流模逻辑的连续时间线性均衡器由于高电源电压和无源器件的使用已经无法满足芯粒间数据接口高密度、小型化、低功耗的需求。针对该问题,本文提出了一种带中频补偿的... 详细信息

高速极短距离有线数据接口是芯粒间互连的重要技术方案。传统的基于电流模逻辑的连续时间线性均衡器由于高电源电压和无源器件的使用已经无法满足芯粒间数据接口高密度、小型化、低功耗的需求。针对该问题,本文提出了一种带中频补偿的反相器型连续时间线性均衡器,可在极短距离应用中传输28 Gb/s非归零信号以及56 Gb/s四电平脉冲幅度调制信号。本设计采用28 nm CMOS工艺实现,核心面积仅为400μm^(2)。经过-9.4 dB@14 GHz的极短距离信道后,基于版图的仿真结果表明,所提出的连续时间线性均衡器使28 Gbaud的非归零信号与四电平脉冲幅度调制信号眼宽分别提升0.14 UI与0.41 UI,眼高提升328 mV与119 mV,56 Gb/s四电平脉冲幅度调制信号工况下功耗为6.12 mW。

关键词：连续时间线性均衡器反相器型有源电感负载中频补偿四电平脉冲幅度调制芯粒

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A confined growth strategy to construct 3DOM SiO_(2) nanoreactor insitu embedded Co_(3)O_(4) nanoparticles catalyst for the catalytic combustion of VOCs:Superior H_(2)O and SO_(2) resistance

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Nano Research 2024年第1期17卷 207-220页

作者： Weigao Han Shilin Wu Fang dong Weiliang Han Yinghao Chu Linghui Su zhicheng Tang State Key Laboratory for Oxo Synthesis and Selective Oxidation National Engineering Research Center for Fine Petrochemical IntermediatesLanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Dalian National Laboratory for Clean Energy Dalian 116023China College of Architecture and Environment Sichuan UniversityChengdu 610000China

SO_(2)poisoning is a common problem in the catalytic combustion of volatile organic compounds(VOCs).In this work,we took three-dimensionally ordered macroporous and mesoporous(3DOM)SiO_(2)as the nanoreactor to protect active sites from SO_(2)erosion in the catalytic combustion of ***,the confined growth of metal active nanoparticles in the multi-stage pore is also full of *** we successfully confined Co_(3)O_(4)nanoparticles(NPs)in macroporous and mesoporous ***,the precursors’growth in the pore was controlled and nanoreactors with different pore sizes were prepared by adjusting the loading amount and preparation *** is discovered that the Co_(3)O_(4)NPs confined in 3DOM SiO_(2)nanoreactor showed superior sulfur and water *** functional theory(DFT)calculations verified that the Co-Si catalyst had high SO_(2)adsorption energy(-0.48 eV),which illustrated that SO_(2)was hard to attach to the surface of the Co-Si *** SiO_(2)nanoreactor had low SO_(2)adsorption energy(-5.15 eV),which indicated that SO_(2)was easily absorbed on SiO_(2)*** illustrated that the SiO_(2)nanoreactor could protect effectively active sites from SO_(2)erosion.

关键词： zeolitic imidazolate frameworks(ZIFs) Co_(3)O_(4) benzene catalytic combustion nanoreactor sulfur and water resistance

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