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Science Letters:Nitrogen doping of activated carbon loading Fe_2O_3 and activity in carbon-nitric oxide reaction

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第5期8卷 707-711页

作者： WAN Xian-kai ZOU Xue-quan SHI hui-xiang wang Da-hui Institute of Environmental Engineering Zhejiang University Hangzhou 310027 China

Nitrogen doping of activated carbon loading Fe2O3 was performed by annealing in ammonia, and the activity of the modified carbon for NO reduction was studied in the presence of oxygen. Results show that Fe2O3 enhances the amount of surface oxygen complexes and facilitates nitrogen incorporation in the carbon, especially in the form of pyridinic nitrogen. The modified carbon shows excellent activity for NO reduction in the low temperature regime （〈500℃） because of the cooperative effect of Fe2O3 and the surface nitrogen species.

关键词： Activated carbon Nitric oxide Doping Iron oxides Catalytic reduction

Dynamical control of directional nonlinear scattering from metallic nanoantennas by three-dimensional focal polarization orientation

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Optoelectronics Letters 2021年第2期17卷 65-69页

作者： wang xiang-hui wang Jian-xin ZENG Ming Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology Institute of Modern OpticsNankai UniversityTianjin 300350China School of Electrical Engineering and Automation Tianjin UniversityTianjin 300072China

We demonstrate that the directionality of far-field second harmonic(SH) emission generated from individual gold nanosphere can be flexibly engineered by manipulating three-dimensional(3D) focal polarization orientation of the excitation field, which is explained by the coherent interference between SH dipolar and quadrupolar emission modes. The SH dipolar emission mode is independent of the polarization direction of the fundamental field whereas the evolution of the focal polarization orientation can dramatically modify the quadrupolar emission pattern. Therefore, the resultant SH emission pattern has a polarization-dependent behavior and side scattering almost perpendicular to the propagation direction of the incident light can be observed under a specific condition. Our findings provide a novel degree of freedom for all-optical control of directional nonlinear scattering from single nanoantenna, thereby opening new possibilities for future potential applications.

关键词： polarization scattering antenna

Quantitative differences in protein expression between cisplatin sensitive COC1 ovarian carcinoma cells and cisplatin resistant COC1/DDP cells

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Chinese Medical Journal 2009年第7期122卷 865-869页

作者： wang hui-xiang SUN Wei LI He-lian ZHANG Wei-yuan Department of Obstetrics and Gynecology Second HospitalTsinghua University Beijing 100049 China Department of General Surgery Second Hospital China MedicalUniversity Shenyang Liaoning 110001 China Department of Obstetrics and Gynecology Second Hospital JilinUniversity Changchun Jilin 130041 China Department of Obstetrics and Gynecology Beijing Obstetrics andGynecology Hospital Capital Medical University Beijing 100026China

Ovarian cancer is the second most common cancer of the reproductive system in women and is the leading cause of death from gynecological cancers. Despite good response to surgery and initial chemotherapy, the resistance to platinum in some ovarian cancers represents a major obstacle to successful therapy. A number of mechanisms for ovarian cancer platinum resistance have been reported. These mechanisms include the reduction of cisplatin accumulation within cancer cells, the ability to detoxify cisplatin, faster repair of cisplatin-DNA adducts, modulation of apoptotic pathways, up-regulation of transcription factors, and a higher concentration of glutathione and metallothioneins.

关键词： chemoresistance ovarian cancer proteomics molecular markers gel electrophoresis

Resolution and contrast enhancement in optical subtraction microscopy with annular aperture

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Optoelectronics Letters 2019年第2期15卷 93-97页

作者： LI Zheng-ya wang xiang-hui FAN Fei CHENG Jie-rong CHANG Sheng-jiang Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology Institute of Modern Optics Nankai University

A method for improving lateral resolution and reducing imaging distortion of optical subtraction microscopy is ***, an azimuthally polarized(AP) light is modulated by an annular ***, an image with higher lateral resolution is obtained by subtracting an image obtained by an annular AP beam from an image obtained by a radially polarized *** simulation results demonstrate that compared with the case without the annular aperture, negative side-lobes in the effective point spread function are effectively suppressed, and the imaging quality of subtraction microscopy is obviously enhanced.

关键词： PSF Resolution enhancement subtraction

Surface interrogation mode of scanning electrochemical microscopy for oxidation study of adsorbed CO generated from serine on platinum

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Chinese Chemical Letters 2011年第12期22卷 1481-1484页

作者： Chun Cui Huang,Qian wang,De Bo xiang,hui Bo Shao~* Key Laboratory of Cluster Science,Ministry of Education of China,School of Chemistry, Beijing Institute of Technology,Beijing 100081,China Key Laboratory of Cluster Science Ministry of Education of China School of Chemistry Beijing Institute of Technology Beijing 100081 China

We report a new method for detection and oxidation of adsorbed carbon monoxide(CO;) generated from serine on a polycrystalline platinum ultramicroelectrode（UME） by bromine（Br;） using in situ surface interrogation（SI） mode of scanning electrochemical microscopy（SECM）.In the SI mode,tip and substrate are both Pt UMEs,and CO;on Pt substrate,generated from serine,can be oxidized by the tip-generated Br;giving a positive *** CO;from serine instead of purging CO gas expands the newly introduced reaction of Br;with CO;and further enhances the hope to get rid of CO;on Pt for fuel cells.

关键词： SECM Surface interrogation mode Adsorbed carbon monoxide Serine Pt ultramicroelectrode

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基于视觉感知的图像增强质量客观评价算法

光电子．激光 2008年第2期19卷 258-262页

作者：王湘晖曾明南开大学现代光学研究所光电信息技术科学教育部重点实验室天津300071 天津大学电气与自动化工程学院天津300072

提出了一种新的图像增强质量客观评价算法。算法综合考虑图像局部区域的背景平均亮度和空间复杂度对视觉分辨力的影响,导出了用于判断局部灰度级跃变是否被有效感知的重要参数——临界可见偏差JND(Just Noticeable Difference),并利用... 详细信息

提出了一种新的图像增强质量客观评价算法。算法综合考虑图像局部区域的背景平均亮度和空间复杂度对视觉分辨力的影响,导出了用于判断局部灰度级跃变是否被有效感知的重要参数——临界可见偏差JND(Just Noticeable Difference),并利用此参数分别计算出图像增强前后有效感知像素数的变化情况,从而定量地给出图像增强质量的评价结果。测试结果表明,本文算法的性能优于传统的平均局部方差法,且评价结果与主观评价结果吻合。

关键词：图像质量评估图像增强视觉感知临界可见偏差

卵巢癌顺铂化疗耐药细胞中细胞核自身抗原精子蛋白的表达

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中华医学杂志 2010年第1期90卷 61-63页

作者：王慧香谭岩清华大学附属玉泉医院妇产中心北京100049 吉林大学第一医院中心实验室

目的探讨细胞核自身抗原精子蛋白（NASP）在卵巢癌顺铂化疗耐药细胞中的表达。方法分别提取卵巢癌顺铂耐药和敏感细胞的蛋白质，应用差异凝胶电泳（DIGE），通过Decyder^TM分析软件获得差异表达蛋白质点，进行基质辅助激光解吸／电离飞... 详细信息

目的探讨细胞核自身抗原精子蛋白（NASP）在卵巢癌顺铂化疗耐药细胞中的表达。方法分别提取卵巢癌顺铂耐药和敏感细胞的蛋白质，应用差异凝胶电泳（DIGE），通过Decyder^TM分析软件获得差异表达蛋白质点，进行基质辅助激光解吸／电离飞行时间质谱（MALDI—TOF-MS）分析、鉴定。结果DIGE分析胶经BVA软件分析发现卵巢癌顺铂耐药细胞中1个表达明显降低的差异蛋白质点，此蛋白质点在耐药细胞中表达下调了21％（P〈0．01）。经质谱分析确认为细胞核自身抗原精子蛋白。结论NASP蛋白的鉴定为深入研究卵巢癌顺铂化疗耐药机制奠定了基础。

关键词：卵巢癌耐药细胞核自身抗原精子蛋白差异凝胶电泳

Cr-WO_(3)超细纳米线用于苯乙烯选择性氧化制苯甲醛

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燃料化学学报（中英文） 2023年第12期51卷 1814-1824页

作者：王会香李鹏慧吕宝亮山西师范大学化学与材料科学学院山西太原030031 中国科学院山西煤炭化学研究所煤转化国家重点实验室山西太原030001

本工作在水热法制备WO_(3)过程中直接引入Cr3+作为改性剂,其在非(001)晶面的选择性吸附,实现了WO_(3)形貌从纳米棒到[001]取向超细纳米线(UNWs)的转变,最终所得Cr-WO_(3)UNWs催化剂的比表面积可达297 m2/g。此外,Cr3+的晶格掺杂和减缓... 详细信息

本工作在水热法制备WO_(3)过程中直接引入Cr3+作为改性剂,其在非(001)晶面的选择性吸附,实现了WO_(3)形貌从纳米棒到[001]取向超细纳米线(UNWs)的转变,最终所得Cr-WO_(3)UNWs催化剂的比表面积可达297 m2/g。此外,Cr3+的晶格掺杂和减缓结晶作用有效增加了WO_(3)表面氧空位(L酸位点)浓度。在苯乙烯选择性氧化制苯甲醛反应中,最佳条件下(70℃、r(nH_(2)O_(2)/n苯乙烯)=2.0、6 h、m=30 mg),Cr-WO_(3)UNWs分别将苯乙烯转化率和苯甲醛选择性从单一WO_(3)纳米棒的19.0%和49.6%提升到72.0%和84.6%,其催化性能的提升归结于以下两点:第一,超大比表面积可提供充足的反应活性位点;第二,L酸位点可将H_(2)O_(2)活化为W-OOH活性物种,L酸位点浓度的增加有利于更多活性物种的产生。

关键词： WO_(3)改性氧空位比表面积苯乙烯氧化苯甲醛

免疫抑制剂对肾脏移植长期存活的影响——现状及新策略

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上海交通大学学报（医学版） 2006年第6期26卷 568-575页

作者：王祥慧上海交通大学医学院瑞金医院器官移植中心上海200025

新型免疫抑制剂和抗体诱导技术的应用,使肾移植后近期急性排斥显著减少,但长期效果仍不理想,免疫抑制剂(IS)对移植肾及其他器官的毒副反应已成为慢性移植肾功能衰竭的重要原因。新的策略是:无肾毒性IS替代,对IS药代动力、基因多态、药... 详细信息

新型免疫抑制剂和抗体诱导技术的应用,使肾移植后近期急性排斥显著减少,但长期效果仍不理想,免疫抑制剂(IS)对移植肾及其他器官的毒副反应已成为慢性移植肾功能衰竭的重要原因。新的策略是:无肾毒性IS替代,对IS药代动力、基因多态、药物毒理及移植受者免疫状态动态监测、识别与评价;以及运用系统生物学方法揭示器官移植免疫的复杂生物学问题,实行IS个体化应用,促进移植受者及肾脏的长期存活。

关键词：肾脏移植长期存活免疫抑制毒性个体化