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彩色珍珠致色成分的拉曼光谱研究

光谱学与光谱分析 2014年第1期34卷 98-102页

作者：胡洋范陆薇黄艺兰中国地质大学珠宝学院湖北武汉430074 中国地质大学逸夫博物馆湖北武汉430074 中国地质大学<宝石和宝石学杂志>编辑部湖北武汉430074

对多种彩色珍珠样品进行了可见光光谱和拉曼光谱测试,研究了珍珠致色成分的种类及其与颜色的关系。研究结果表明:(1)彩色淡水珍珠和海水珍珠样品均会在1 121～1 132和1 506～1 524cm-1范围出现强峰,该特征峰归属于多烯化合物的C—C和C—... 详细信息

对多种彩色珍珠样品进行了可见光光谱和拉曼光谱测试,研究了珍珠致色成分的种类及其与颜色的关系。研究结果表明:(1)彩色淡水珍珠和海水珍珠样品均会在1 121～1 132和1 506～1 524cm-1范围出现强峰,该特征峰归属于多烯化合物的C—C和C—C伸缩振动;(2)随着珍珠颜色的加深,样品位于1 117～1 132,1 502～1 524和2 000～3 500cm-1范围的峰逐渐增强,特征峰所代表的有机质与珍珠颜色有关;(3)深紫色淡水珍珠和深橘红色海水珍珠样品在1 475～1 575cm-1范围的包络峰可分成8～10个次级峰,计算可知多烯化合物C—C双键数目分别为N=9～27和N=7～27。珍珠中不同种类和含量的多烯化合物,可能是彩色珍珠的致色原因。

关键词：珍珠有机致色可见光光谱拉曼光谱

Better surgical treatment method for hepatocellular carcinoma with portal vein tumor thrombus

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World Journal of Gastroenterology 2018年第40期24卷 4527-4535页

作者： Shu-You Peng Xu-An Wang Cong-Yun huang Jiang-Tao Li De-Fei Hong yi-Fang Wang Bin Xu Department of Hepatobiliary and Pancreatic Surgery The Second Affiliated Hospital of Zhejiang University School of Medicine Department of General Surgery Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine Department of General Surgery Yuebei People's Hospital Affiliated to Shantou University School of Medicine Department of Hepatobiliary and Pancreatic Surgery Sir Run Run Shaw Hospital Affiliated Hospital of Zhejiang University School of Medicine

Hepatocellular carcinoma(HCC) with portal vein tumor thrombus(PVTT) is a disease that is not uncommon, but the treatments vary drastically between Eastern and Western countries. In Europe and America, the first line of treatment is systemic therapy such as sorafenib and the surgical treatment is not a recommend option. While an increasing number of studies from China and Japan have suggested that surgical treatment results in better outcomes when compared to transcatheter arterial chemoembolization(TACE), sorafenib, or other nonsurgical treatments, and two classification systems, Japanese Vp classification and Chinese Cheng's classification, were very useful to guide the surgical treatment. We have also found that surgical treatment may be more effective, as we have performed surgical treatment for HCC-PVTT patients over a period of approximately 15 years and achieved good results with the longest surviving time being 13 years and onward. In this study, we review the efficacy and principles of current surgical treatments and introduce our new, more effective surgical technique named "thrombectomy first", which means the tumor thrombus in the main portal vein, the bifurcation or the contralateral portal vein should be removed prior to liver resection. Thus, compression and crushing of PVTT during the operation could be avoided and new intrahepatic metastases caused by tumor thrombus to the remnant liver minimized. The new technique is even beneficial to the prognosis of Cheng's classification Types Ⅲ and Ⅳ PVTT. The vital tips and tricks for the surgical approach are described.

关键词： Portal vein tumor thrombus Thrombectomy first Surgery Hepatocellular carcinoma

Evidence of Middle Pleistocene hominin migration in the Qinling Mountains(central China)from the Miaokou Paleolithic site

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Journal of Geographical Sciences 2022年第2期32卷 358-374页

作者： LIU Dengke SUN Xuefeng HU Xuzhi yi Liang GUO Xiaoqi WANG yichao WANG Shejiang lu Huayu School of Geography and Ocean Science Nanjing UniversityNanjing 210023China School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyCASBeijing 100044China CAS Center for Excellence in Life and Paleoenvironment Beijing 100044China

The Qinling Mountain Range(QMR)spans a large region in China and is an important area of hominin *** Paleolithic sites are found in Bahe,South luohe,and Hanjiang river valleys in the northern,eastern,and southern part of the range,*** Danjiang River valley acts as a channel connecting these valleys and stretches from the north to the south of the *** previous dating of the Paleolithic sites in the Danjiang valley mainly relied on geomorphologic comparison,stratigraphic correlation,fossil characteristics,and Paleolithic artifacts,indicating a lack of absolute *** this study,we conducted a detailed geochronological investigation of the entire valley,and selected an ideal site—the Miaokou *** on the identification of the loess-paleosol sequences,optically stimulated luminescence,and magnetostratigraphy,the Paleolithic artifacts of the Miaokou site located within the S5 and S6 layers of the profile belong to~0.6-0.7 *** suggests that the Paleolithic site is an old site in the Danjiang River valley,and this period also witnessed a rapid increase in the number of hominin sites during the Middle *** our results with previous reports across the QMR,we propose that the Danjiang River valley might have been a corridor for hominin migration,and is worthy of further investigation.

关键词： Danjiang River valley Miaokou site loess-paleosol sequence magnetostratigraphy hominin routeway

Development of the Tiny Current Test of nA

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Southwestern Institute of Physics Annual Report

Southwestern Institute of Physics Annual Report 2005年第1期 159-160页

作者： LIU Jian huang yi

The sensor of ray made use of photosensitive element translate the light signal into the electric signal, its keenness wavelength is by wavelength of observable ray, includes the infrared＇s wavelength and ultraviolet radiation＇s wavelengthth. The sensor of ray is not only used for detecting ray but also used for composing the other sensor. It can detect many non-electric signal, the premise should translate the non-electric signal into the light signal. The sensor of ray is a sort of most output and application being most extensive, it is very important in the field of automatic control and none-electric test art.

关键词： Electrometer-grade operational amplifier Photoelectric cell

Strengthening Mechanism and Microstructure of Deformable Ti Particles Reinforced AZ91 Composite

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Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 1935-1945页

作者： Biao Tang Jian-Bo Li Jun-Liu Ye Huan luo yi-Tao Wang Bo Guan Yang-Fan lu Xian-Hua Chen Kai-Hong Zheng Fu-Sheng Pan School of Materials Science and Engineering Chongqing UniversityChongqing 400044China International Joint Laboratory for Light Alloys(MOE) School of Materials Science and EngineeringChongqing UniversityChongqing 400044China Institute of New Materials Guangdong Academy of SciencesGuangzhou 510650China

In this study,the deformable titanium(Ti)particles reinforced AZ91 composite was successfully prepared by powder metallurgy and subsequent *** mechanical properties and microstructural evolution of pure AZ91 and 5 Ti/AZ91 composite were *** yield strength,ultimate tensile strength,and elongation of 5 Ti/AZ91 composite are measured to be 212 MPa,323 MPa,and 10.1%,*** analysis revealed that Ti particles are elongated along the extrusion direction,forming a discontinuous strip Ti particles,fine precipitated Mg_(17)Al_(12) phase inhibits dynamic recrystallization(DRX)behavior through Zener pinning effect and hinders the growth of matrix grains,resulting in refiner grains of 5 Ti/AZ91 *** deformed Ti particles and magnesium(Mg)matrix to generate additional heterogeneous deformation-induced(HDI)*** deformation-induced strengthening mainly contributed to the increment of yield strength for 5 Ti/AZ91 composite.

关键词： Magnesium matrix composites Tiparticles Recrystallization Mechanical properties Heterogeneous deformation

Ralf Jauch:A German Scientist Whose Roots Are in China

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China Today 2017年第7期66卷 28-29页

作者： huang yi LI YUAN 不详

RALF Jauch, a German scientist from Jena, a city in the state of Thuringia, now lives in China as a full-time research fellow with .the Chinese Academy of Sciences (CAS) at the Guangzhou Institute of Biomedicine and H... 详细信息

关键词： In Planck Ralf Jauch:A German Scientist Whose Roots Are in China

Features of gastric cancer by anatomic subsite in northern China: A multi-center Health Science Report database study

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World Journal of Gastrointestinal Oncology 2022年第11期14卷 2238-2252页

作者： Rui-Ze Qu Yan-Peng Ma Xiao-Yuan Bao Li-Yuan Tao Xin Zhou Si-yi lu yi Zhang Bing-Yan Wang Fei Li Lin Tuo Zhi-Peng Zhang Wei Fu Department of General Surgery Cancer CenterPeking University Third HospitalBeijing 100191China Medical Informatics Center Peking University Health Science CenterBeijing 100191China Research Center of Clinical Epidemiology Peking University Third HospitalBeijing 100191China Department of Hospital Management Peking University Health Science CenterBeijing 100191China

BACKGROUND The features of gastric cancer based on the anatomic site remain unknown in northern China *** To analyze gastric cancer features and associated trends based on the anatomical site in northern China *** This cross-sectional study used incident gastric cancer case data from 10 Peking University-affiliated hospitals(2014 to 2018).The clinical and prevailing local features were *** A total of 10709 patients were enrolled,including antral(42.97%),cardia(34.30%),and stomach body(18.41%)gastric cancer *** in the cardia had the highest male:female ratio,proportion of elderly patients,and patients with complications,including hypertension,diabetes,cerebrovascular,and coronary diseases(Plux disease cases during the same period(P<0.001).Multivariate analysis revealed that tumor location in the cardia increased the risk of inhospital mortality(P=0.046).Anatomical subsite was not linked to postoperative *** The features of gastric cancer based on the anatomical site differ between northern China and other regions,both globally and within the *** factors may account for these differences and should affect policy-making and clinical practice.

关键词： Feature Gastric cancer Anatomical site Northern China

Three-dimensional nanostructured Co_(2)VO_(4)-decorated carbon nanotubes for sodium-ion battery anode materials

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Rare Metals 2023年第12期42卷 4060-4069页

作者： yi Zhang Zhen Zhang Sheng Yu Hannah M.Johnson De-Cheng Zhao Su-Chong Tan Zheng-Dao Pan Zhou-lu Wang Yu-Tong Wu Xiang Liu School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China Department of Chemistry Washington State UniversityPullman 99164USA

Since Co_(2)VO_(4) possesses a solid spinel structure and a high degree of stability,it has gained interest as a possible anode material for sodium-ion ***,the application of this electrode material is still hampered by its poor electrical conductivity and severe volume *** Co_(2)VO_(4) nanoparticles(CVO)were grown on carbon nanotubes(CNTs)by a simple solvothermal method to form string-like conductive networks(CVO/CNTs).The flexible and highly conductive three-dimensional(3D)carbon nano tubes and small-sized CVO NPs can enhance the rapid transport of electrons,thereby enhancing the conductivity of the ***-like conductive network structures have a larger specific surface area,enhancing electron/ion transmission by fully contacting the *** findings demonstrate the superior Na^(+)storing capability of the CVO/CNTs *** battery has a great rate performance(148.2 mAh·g^(-1)at 5 A·g^(-1))and outstanding long-term cycling performance(147.3 mAh·g^(-1)after 1000 cycles at 1A·g^(-1)).In high-rate,long-cycle sodium-ion batteries,CVO/CNTs composites offer a wide range of possible applications.

关键词： Sodium-ion batteries(SIBs) Co_(2)VO_(4) Carbon nanotubes(CNTs) Anode Long-cycle

Playdough-like carbon electrode: A promising strategy for high efficiency perovskite solar cells and modules

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eScience 2024年第2期4卷 101-107页

作者： Aodong Zhu Lin Chen Ao Zhang Chenpu Zhu Xinxin Zhang Jie Zhong Fuzhi huang yi-Bing Cheng Junyan Xiao School of Materials Science and Engineering Wuhan University of Technology122 Luoshi RoadWuhanHubeiChina State Key Laboratory of Advanced Technologies for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhanHubeiChina School of Chemistry and Chemical Engineering Huazhong University of Science and Technology1037 Luoyu RoadWuhanHubeiChina Research Centre for Advanced Thin Film Photovoltaics Wuhan University of Technology122 Luoshi RoadWuhanHubeiChina Jinan Municipal Bureau of Industry and Information Technology JinanShandongChina

Carbon-based perovskite solar cells(C-PSCs)are promising candidates for large-scale photovoltaic applications due to their theoretical low cost and high ***,the fabrication of high-performance C-PSCs with large-area electrodes remains *** this work,we propose a novel playdough-like graphite putty as top electrode in the perovskite *** electrode with soft nature can form good contact with the holetransporting layer and the conductive substrate at room temperature by a simple pressing technique,which facilitates the fabrication of both small-area devices and perovskite solar *** this preliminary research,the corresponding small devices and modules can achieve efficiencies of 20.29%(~0.15 cm^(2))and 16.01%(~10 cm^(2)),***,we analyze the limitations of the optical and electrical properties of this playdough-like graphite electrode on the device performance,suggesting a direction for further improvement of C-PSCs in the future.

关键词： Perovskite solar cells Large-area module Carbon electrode Conductive playdough