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常规腹部CT的辐射剂量变化较大：超剂量的原因及减少剂量的小建议

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国际医学放射学杂志 2024年第3期 378-378页

作者： R.Smith-Bindman T.Kang P.W.Chu Y.Wang C.Stewart m.das 吴玉平

摘要目的描述辐射剂量减少技术在常规腹部CT中的应用和影响。方法回顾性分析了由95家医院和成像机构提供的有大剂量登记的成人连续常规腹部CT扫描。将检查分

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magnesium oxide(mgO)nanoadsorbents in wastewater treatment:A comprehensive review

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Journal of magnesium and Alloys 2024年第5期12卷 1709-1773页

作者： H.C.S.Perera V.Gurunanthanan Anoop Singh m.m.m.G.P.G.mantilaka G.das Sandeep Arya Department of Physics Khalifa UniversityAbu Dhabi12788United Arab Emirates Postgraduate Institute of Science University of PeradeniyaPeradeniyaSri Lanka Department of Humanities and Sciences Guru Nanak Institutions Technical CampusIbrahimpatnamHyderabad501506India Centre for Global Health Research Saveetha Medical College and HospitalsSaveetha Institute of Medical and Technical SciencesChennai602105Tamil NaduIndia Department of Physics University of JammuJammu and Kashmir180006India

Wastewater contamination by heavy metals and synthetic dyes presents a significant environmental challenge,necessitating effective and sustainable separation *** review article provides a detailed examination of magnesium oxide(mgO)nanoparticles as an innovative nanoadsorbent for wastewater treatment,with a specific focus on heavy metal and dye *** review comprehensively explores various aspects of mgO nanoparticles,including their structural characteristics and synthesis *** article delves into the morphology and crystallographic arrangement of mgO nanoparticles,offering insights into their structural *** the complexity of adsorption processes,the review identifies and analyzes parameters influencing the adsorption efficiency of mgO nanoparticles,such as temperature,pH,contact time,initial concentration,and co-existing *** interplay between these parameters and the adsorption capability of mgO nanoparticles emphasizes the importance of optimizing operational ***,the review assesses various synthesis methods for mgO nanoparticles,including sol-gel,hydrothermal,precipitation,green synthesis,solvothermal,and template-assisted *** discusses the advantages,limitations,and resulting nanoparticle characteristics of each method,enabling readers to grasp the implications of synthesis processes on adsorption *** comprehensive review consolidates current insights into the effectiveness of mgO nanoparticles as a potent nanoadsorbent for removing heavy metals and dyes from wastewater covering a wide spectrum of aspects related to mgO ***,there is a need to investigate the use of mgO in the treatment of actual wastewater or river water,in order to leverage its cost-effectiveness and high efficiency for practical water treatment applications in real-time.

关键词： mgO nanoparticles Nanoadsorbent Wastewater treatment Heavy metals Dye separation Adsorption Synthesis methods

A review on transition metal oxides based photocatalysts for degradation of synthetic organic pollutants

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Journal of Environmental Sciences 2024年第5期139卷 389-417页

作者： Athira Krishnan Anna Swarnalal Divine das midhina Krishnan Viswanathan S.Saji SmAShibli Department of Chemistry Amrita Vishwa VidyapeethamAmritapuriKerala690525India Interdisciplinary Research Center for Advanced materials King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Department of Chemistry University of KeralaKariavattom CampusThiruvananthapuramKerala695581India

This review provides insight into the current research trend in transition metal oxides(TmOs)-based photocatalysis in removing the organic colouring matters from *** easy understanding,the research progress has been presented in four generations according to the catalyst composition and mode of application,viz:single component TmOs(the firstgeneration),doped TmOs/binary TmOs/doped binary TmOs(the second-generation),inactive/active support-immobilized TmOs(the third-generation),and ternary/quaternary compositions(the fourth-generation).The first two generations represent suspended catalysts,the third generation is supported catalysts,and the fourth generation can be suspended or *** review provides an elaborated comparison between suspended and supported catalysts,their general/specific requirements,key factors controlling degradation,and the methodologies for performance *** the plausible fundamental and advanced dye degradation mechanisms involved in each generation of catalysts were *** existing challenges in TmOs-based photocatalysis and how the researchers approach the hitch to resolve it effectively are *** research trends are also presented.

关键词： Photocatalysis Dye degradation Transition metal oxides and composites Supported catalysts Suspended catalysts

Scalable orthogonal delay-division multiplexed OEO artificial neural network trained for TI-ADC equalization

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Photonics Research 2024年第1期12卷 85-105页

作者： ANDREA ZAZZI ARKA DIPTA das LUKAS HüSSEN RENATO NEGRA JEREmY WITZENS Institute of Integrated Photonics RWTH Aachen University52074 AachenGermany Chair of High-Frequency Electronics RWTH Aachen University52074 AachenGermany

We propose a new signaling scheme for on-chip optical-electrical-optical artificial neural networks that utilizes orthogonal delay-division multiplexing and pilot-tone-based self-homodyne *** scheme offers a more efficient scaling of the optical power budget with increasing network *** simulations,based on220 nm silicon-on-insulator silicon photonics technology,suggest that the network can support 31×31 neurons,with 961 links and freely programmable weights,using a single 500 m W optical comb and a signal-to-noise ratio of 21.3 d B per ***,it features a low sensitivity to temperature fluctuations,ensuring that it can be operated outside of a laboratory *** demonstrate the network’s effectiveness in nonlinear equalization tasks by training it to equalize a time-interleaved analog-to-digital converter(ADC)architecture,achieving an effective number of bits over 4 over the entire 75 GHz ADC *** anticipate that this network architecture will enable broadband and low latency nonlinear signal processing in practical settings such as ultra-broadband data converters and real-time control systems.

关键词： network delay artificial

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超声波及其在湿处理中的应用

国际纺织导报 2006年第4期34卷 63-64,66-67页

作者： A．K．Patra m.das 黄利利（译）钟毅（校）纺织科学技术研究所（印度）不详

综述了超声波及其在纺织品湿加工中的应用。在纺织加工的不同阶段,超声波在染色方面的应用是最有发展前景的。当然,在其他领域的应用也是有益的。通常高能量的超声波提高了织物湿处理的速度。在使用超声波的加工过程中可以节约一定的时... 详细信息

综述了超声波及其在纺织品湿加工中的应用。在纺织加工的不同阶段,超声波在染色方面的应用是最有发展前景的。当然,在其他领域的应用也是有益的。通常高能量的超声波提高了织物湿处理的速度。在使用超声波的加工过程中可以节约一定的时间、能量和化学品。此外,在许多染色过程中可以减少污水的产生。然而,至今还没有由超声波辅助的大规模工业生产设备。

关键词：超声波纺织品湿处理

2.4 V ultrahigh-voltage aqueous mXene-based asymmetric micro-supercapacitors with high volumetric energy density toward a self-sufficient integrated microsystem

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Fundamental Research 2024年第2期4卷 307-314页

作者： Yuanyuan Zhu Shuanghao Zheng Jieqiong Qin Jiaxin ma Pratteek das Feng Zhou Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Shijingshan DistrictBeijing 100049China College of Science Henan Agricultural UniversityZhengzhou 450002China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalian 116023China Key Laboratory of Spin Electron and Nanomaterials of Anhui Higher Education Institutes Suzhou UniversitySuzhou 234000China

Two-dimensional mXenes are key high-capacitance electrode materials for micro-supercapacitors(mSCs)catering to integrated ***,the narrow electrochemical voltage windows of conventional aqueous electrolytes(≤1.23 V)and symmetric mXene mSCs(typically≤0.6 V)substantially limit their output voltage and energy *** concentrated aqueous electrolytes exhibit lower water molecule activity,which inhibits water splitting and consequently widens the operating voltage ***,we report ultrahigh-voltage aqueous planar asymmetric mSCs(AmSCs)based on a highly concentrated LiCl-gel quasi-solid-state electrolyte with mXene(Ti3C2Tx)as the negative electrode and mnO_(2) nanosheets as the positive electrode(mXene//mnO_(2)-AmSCs).The mXene//mnO_(2)-AmSCs exhibit a high voltage of up to 2.4 V,attaining an ultrahigh volumetric energy density of 53 mWh cm−***,the in-plane geometry and the quasi-solid-state electrolyte enabled excellent mechanical flexibility and performance uniformity in the serially/parallel connected packs of our ***,the mXene//mnO_(2)-AmSC-based integrated microsystem,in conjunction with solar cells and consumer electronics,could efficiently realize simultaneous energy harvesting,storage,and *** findings of this study provide insights for constructing high-voltage aqueous mXene-based AmSCs as safe and self-sufficient micropower sources in smart integrated microsystems.

关键词： Asymmetric micro-supercapacitors mXene mnO_(2) Aqueous electrolyte High voltage Integrated microsystem

比较颅内外血管双源CT血管成像与mR血管成像手术前评估的初步研究

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国际医学放射学杂志 2010年第2期 202-203页

作者： G.mühlenbruch m.das G.mommertz m.Schaaf S.Langer A.H.mahnken 刘锴 Department of Diagnostic and Interventional Radiology RWTH Aachen UniversityPauwelsstr.3052057 AachenGermany

除了颈动脉狭窄的评价之外,颅内外动脉解剖和损伤的评价对适当的临床评估、治疗选择及制订计划至关重要。我们的研究目的是评估双源CTA和3T mRA的潜力。1

关键词：血管成像 mRA 双源 mR 颅内 CT

人食管和贲门癌前病变和癌组织P40上皮特异性蛋白表达的研究

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河南医科大学学报 1995年第2期30卷 101-104页

作者：王立东周琦陈玉龙周芸刘保池裘宋良 Theresa Smith Koron m.das Chung S.Yang 河南医科大学医学实验中心癌症研究室河南省肿瘤病理学重点实验室河南医科大学第一附属医院肿瘤科美国新泽西罗格斯州立大学 Robert Wood Johnson医院

利用鼠单克隆抗体７Ｅ（１２）Ｈ（１２），对人食管和贲门正常粘膜上皮，癌前病变和癌组织的Ｐ４０上皮特异性蛋白表达进行比较研究。结果表明，食管和贲门上皮Ｐ４０蛋白的表达和分布明显不同。贲门柱状上皮Ｐ４０蛋白的免疫反应强度... 详细信息

利用鼠单克隆抗体７Ｅ（１２）Ｈ（１２），对人食管和贲门正常粘膜上皮，癌前病变和癌组织的Ｐ４０上皮特异性蛋白表达进行比较研究。结果表明，食管和贲门上皮Ｐ４０蛋白的表达和分布明显不同。贲门柱状上皮Ｐ４０蛋白的免疫反应强度和发生率明显高于鳞状上皮（相差８倍）。食管固有腺上皮细胞也出现较强的Ｐ４０蛋白免疫反应性。在贲门组织中，Ｐ４０蛋白免疫反应６２％发生在细胞浆；２１％发生在细胞核；１７％同时发生在胞浆和胞核。而在食管，其反应全部在胞浆。随着病变的加重，食管和贲门Ｐ４０蛋白的表达均出现增高的趋势。

关键词：上皮蛋白食管肿瘤贲门肿瘤癌前病变

来自4个不同CT供应商的迭代重建算法对冠状动脉钙化积分扫描中CT辐射剂量减少的影响

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国际医学放射学杂志 2014年第6期 597-598页

作者： m.J.Willemink R.A.P.Takx P.A.de Jong R.P.J.Budde R.L.A.W.Bleys m.das 武文婧 Department of Radiology Utrecht University Medical CenterP.O.Box 85500E1323508 GA UtrechtThe Netherlands

摘要目的分析放射剂量的减少及三维重建(IR)算法对冠状动脉钙化评分(CCS)的影响。方法 15个离体人体心脏置于人体胸部体模内,采用4家供应商的CT系统,以4种

关键词：放射剂量冠状动脉辐射剂量迭代重建 CT