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彩色多普勒超声与X射线钼靶联合检查对乳腺癌的诊断价值

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中国医疗器械信息 2018年第11期24卷 70-71页

作者：张士媛锦州市义县人民医院功能科辽宁锦州121100

目的:探究彩色多普勒超声与X射线钼靶联合检查对乳腺癌的诊断价值,为临床医师选择合理的影像学检查手段提供参考。方法:选取在本院接受医治的疑似乳腺癌患者90例,选取时间为2015年10月~2017年11月,根据就诊时间差异,将所有入选患者随机... 详细信息

目的:探究彩色多普勒超声与X射线钼靶联合检查对乳腺癌的诊断价值,为临床医师选择合理的影像学检查手段提供参考。方法:选取在本院接受医治的疑似乳腺癌患者90例,选取时间为2015年10月~2017年11月,根据就诊时间差异,将所有入选患者随机分为彩色多普勒超声组、X射线钼靶组以及联合检查组,每组30例。对比3组患者诊断结果。结果:联合组检出率为96.67%(29/30),均高于超声组、X射线钼靶组,组间差异显著,P<0.05;联合组漏检率为3.33%,均低于超声组、X射线钼靶组,组间差异显著,P<0.05。结论:对于乳腺癌的影像学诊断,彩色多普勒超声和X射线钼靶各有优势,两者联合应用的诊出率更高。

关键词：彩色多普勒超声 X射线钼靶乳腺癌影像学诊断

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2007:生物医药资本复苏

中国医药生物技术 2007年第5期2卷 321-323页

作者：张仕元西南证券研究发展中心北京100032

　　生物技术产业自上世纪70年代中期萌芽以来,已历30余载.全球生物技术产业从无到有,逐步成为最具活力的现代新型产业.近几年,生物技术产业无论在技术创新、企业融资与并购、企业营收等方面均表现突出,在众多的生物产业中,尤以生物制... 详细信息

　　生物技术产业自上世纪70年代中期萌芽以来,已历30余载.全球生物技术产业从无到有,逐步成为最具活力的现代新型产业.近几年,生物技术产业无论在技术创新、企业融资与并购、企业营收等方面均表现突出,在众多的生物产业中,尤以生物制药业发展最快.……

关键词：生物医药企业企业管理生物技术产业资本生物技术药物医药生物技术先声药业风险投资

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《声律启蒙》中的对偶艺术

齐齐哈尔大学学报（哲学社会科学版） 2017年第3期 137-139页

作者：张世渊新疆师范大学文学院新疆乌鲁木齐830063

《声律启蒙》一书中运用的修辞手法颇多,如对照、比喻、夸张、拟人、互文、顶真、对偶等等,唯对偶的使用数量最多,用法最为典型。本文通过对该书对偶辞格的具体分析,研究表明《声律启蒙》一书中的对偶使用以正对为主,内容材料选择多与... 详细信息

《声律启蒙》一书中运用的修辞手法颇多,如对照、比喻、夸张、拟人、互文、顶真、对偶等等,唯对偶的使用数量最多,用法最为典型。本文通过对该书对偶辞格的具体分析,研究表明《声律启蒙》一书中的对偶使用以正对为主,内容材料选择多与道德价值倾向相关。对偶辞格的大量使用使得全书行文气势贯通,语句对称均衡,语言活泼灵动。

关键词：声律启蒙对偶修辞学辞格

Carbon dots self-assembly enables near-infrared emission

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Science China Chemistry 2025年

作者： Shurong Ding Shasha Liu Yuzhuo Yang Linlin shi Yongqiang zhang Jingkun Yu Haoqiang Song Yingge shi Siyu Lu College of Chemistry Pingyuan Laboratory Zhengzhou University Henan Institute of Advanced Technology Zhengzhou University

In the fields of biomedicine, detection, and anti-counterfeiting, there is a widespread demand for cost-effective, easily synthesized, and environmentally friendly near-infrared(NIR) materials. Carbon dots(CDs), a cheap and non-toxic zero-dimensional carbon nanomaterial exhibiting exceptional photoluminescence(PL) properties and facile structural modification, have emerged as a promising candidate for the development of novel NIR materials. This study presents the synthesis of CDs capable of emitting a wide range of wavelengths from blue to NIR(456–836 nm) as their concentrations increase. The incorporation of oxygen and nitrogen co-doped atoms facilitates the optimization of non-coplanar angles, thereby promoting favorable π-πstacking interactions. This leads to the formation of metal-free rigid clusters through interconnecting adjacent nanoparticles in a gear-like meshing pattern through self-assembly. Consequently, intramolecular motion is constrained, vibration coupling is mitigated, non-radiative transition losses are minimized, and efficient NIR emission from CD clusters in high concentrations is ensured. Furthermore, NIR light-emitting diode(NIR LED) based on the CD clusters was successfully fabricated and employed for various applications including information encryption, anti-counterfeiting, and penetration detection in the field of NIR imaging.

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基于复合调制方式的AM广播

应用科学学报 2007年第5期25卷 451-455页

作者：戚晨皓吴乐南张仕元东南大学信息科学与工程学院江苏南京210096 南京电子技术研究所江苏南京210013

该文提出了一种采用复合调制方式的AM广播方案.在数字调幅广播的基础上,引入了一种窄带调制方式——最小附加波形键控,形成复合调制,充分利用了有限的频带资源.系统仿真结果表明,两种调制方式在一定条件下都能获得不错的误码率性能.

关键词：最小附加波形键控直接序列扩频正交频分复用数字调幅广播

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu zhang Aihua yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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单晶石墨、多晶石墨电导行为的差异

物理学报 2007年第6期56卷 3464-3467页

作者：王志明徐庆宇张世远邢定钰都有为南京理工大学机械工程学院南京210094 德国莱比锡大学物理系南京大学固体微结构国家重点实验室南京210093

报道了单晶石墨、多晶石墨电导行为的差异.在8.15T磁场下,4.5K处单、多晶石墨的正磁电阻效应分别为69400%,170%,同时在0T,8T磁场作用下,多晶石墨的电导行为呈现类绝缘体型性质,但在单晶石墨中我们发现了与磁场相关的类半金属-绝缘体型转... 详细信息

报道了单晶石墨、多晶石墨电导行为的差异.在8.15T磁场下,4.5K处单、多晶石墨的正磁电阻效应分别为69400%,170%,同时在0T,8T磁场作用下,多晶石墨的电导行为呈现类绝缘体型性质,但在单晶石墨中我们发现了与磁场相关的类半金属-绝缘体型转变,通过分析,我们认为:单、多晶石墨电导行为存在较大差异的原因可能来源于库仑相互作用在高定向热解石墨中变得不可忽视,而多晶石墨样品却存在晶界散射.

关键词：半金属石墨类半金属-绝缘体型转变

Low‑Temperature Fabrication of Stable Black‑Phase CsPbI_(3)Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

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Nano-Micro Letters 2025年第3期17卷 232-245页

作者： Yingjie Zhao Yicheng Sun Chaoxin Pei Xing Yin Xinyi Li Yi Hao Mengru zhang Meng yuan Jinglin Zhou Yu Chen Yanlin Song College of Chemistry and Pingyuan Laboratory Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Green Printing Institute of ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China Key Laboratory of Bio‑Inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049People’s Republic of China

Flexible wearable optoelectronic devices fabricated fromorganic–inorganic hybrid perovskites significantly accelerate the developmentof portable energy,biomedicine,and sensing fields,but their poor thermal stabilityhinders further ***,all-inorganic perovskites possessexcellent thermal stability,but black-phase all-inorganic perovskite filmusually requires high-temperature annealing steps,which increases energy consumptionand is not conducive to the fabrication of flexible wearable *** this work,an unprecedented low-temperature fabrication of stable blackphaseCsPbI3perovskite films is demonstrated by the in situ hydrolysis reactionof diphenylphosphinic chloride *** released diphenyl phosphateand chloride ions during the hydrolysis reaction significantly lower the phasetransition temperature and effectively passivate the defects in the perovskitefilms,yielding high-performance photodetectors with a responsivity of 42.1 AW−1 and a detectivity of 1.3×10^(14)***,high-fidelity imageand photoplethysmography sensors are demonstrated based on the fabricated flexible wearable *** work provides a newperspective for the low-temperature fabrication of large-area all-inorganic perovskite flexible optoelectronic devices.

关键词： In situ hydrolyzation Low-temperature processing All-inorganic perovskite Flexible photodetectors Health monitoring

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颅内动脉瘤438例显微手术分析

中华外科杂志 2008年第8期46卷 598-601页

作者：张施远游潮刘进平毛伯镛贺民四川大学华西医院神经外科成都610041

目的总结438例患者的508个动脉瘤的显微手术治疗经验。方法回顾性总结分析438例患者的临床资料，包括围手术期处理、手术时机、术中处理要点、动脉瘤分级。结果共476个动脉瘤显微手术治疗成功，其中直接瘤颈夹闭450个，包裹14个，孤立8... 详细信息

目的总结438例患者的508个动脉瘤的显微手术治疗经验。方法回顾性总结分析438例患者的临床资料，包括围手术期处理、手术时机、术中处理要点、动脉瘤分级。结果共476个动脉瘤显微手术治疗成功，其中直接瘤颈夹闭450个，包裹14个，孤立8个，切除动脉瘤4个。术中动脉瘤破裂32个（6．72％）。术前Hunt-Hess分级与手术死亡率正相关。延期（≥7d）手术患者病死率（4．28％），明显低于早期手术病死率。结论正确的显微外科手术入路治疗颅内动脉瘤是一个十分有效的治疗手段。术前Hunt-Hess分级越高，病死率越高。

关键词：颅内动脉瘤显微外科手术蛛网膜下腔出血