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Multi-chromatic silicon nanocrystals

Light(Science & Applications) 2017年第1期6卷 721-728页

作者： benjamin Bruhn benjamin jm brenny Sidoeri Dekker Ilker Doğan Peter Schall Katerina Dohnalová Van der Waals-Zeeman Institute University of AmsterdamScience Park 904Amsterdam 1098 XHThe Netherlands Center for Nanophotonics AMOLFScience Park 104Amsterdam 1098 XGThe Netherlands Department of Applied Physics Eindhoven University of TechnologyP.O.Box 512Eindhoven 5600 MBThe Netherlands Dutch Institute for Fundamental Energy Research(DIFFER) P.O.Box 6336Eindhoven 5600 HHThe Netherlands

Silicon nanocrystals(SiNCs)have great potential to become environmental friendly alternatives to heavy-metal containing nanocrystals for applications including medical imaging,lighting and *** exhibit excellent photostability,non-toxicity and abundant resources,but their often reported inefficient and spectrally limited light emission seriously impair their *** we demonstrate a new method that converts SiNCs into an efficient and robust multi-chromatic ***~15 keV electron-beam irradiation of oxide-capped SiNCs,we introduce several types of color centers into the nanocrystal’s oxide shell with efficient blue,green and red emission bands,together yielding warm-white photoluminescence,even for a single *** centers are not native to the original system and we relate them to known defects in *** in the silica host,however,here the centers are efficiently optically *** further optimization and up-scaling of this method,e-beam irradiated SiNCs can be of great interest as white phosphors for applications such as LEDs.

关键词： cathodoluminscence color center electron beam multi-chromaticity silicon nanocrystals

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Association of cancer with comorbid inflammatory conditions and treatment in patients with Lynch syndrome

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World Journal of Clinical Oncology 2022年第1期13卷 49-61页

作者： Muhammad S Faisal Carol A Burke David Liska Amy L Lightner Brandie Leach Margaret O’Malley Lisa LaGuardia benjamin Click JP Achkar Matthew Kalady jm Church Gautam Mankaney Department of Internal Medicine Cleveland Clinic FoundationClevelandOH 44195United States Department of Gastroenterology and Hepatology Cleveland ClinicClevelandOH 44195United States Department of Colorectal Surgery Cleveland ClinicClevelandOH 44195United States Center for Personalized Genetic Healthcare Genomic Medicine InstituteClevelandOH 44195United States Department of Gastroenterology Hepatology&NutritionCleveland ClinicClevelandOH 44195United States Center for Inflammatory Bowel Disease Department of GastroenterologyHepatology and NutritionCleveland ClinicClevelandOH 44195United States Department of Colorectal Surgery Ohio State UniversityColumbusOH 43210United States Department of Gastroenterology and Hepatology Virginia Mason Franciscan HealthSeattleWA 98101United States

BACKGROUND Individuals with Lynch syndrome(LS)and hereditary non-polyposis colorectal cancer(HNPCC)are at increased risk of both colorectal cancer and other *** interplay between immunosuppression,a comorbid inflammatory condition(CID),and HNPCC on cancer risk is *** To evaluate the impact of CIDs,and exposure to monoclonal antibodies and immunomodulators,on cancer risk in individuals with *** Individuals prospectively followed in a hereditary cancer registry with LS/HNPCC with the diagnosis of inflammatory bowel disease or rheumatic disease were *** compared the proportion of patients with cancer in LS/HNPCC group with and without a *** also compared the proportion of patients who developed cancer following a CID diagnosis based upon exposure to immunosuppressive *** A total of 21 patients with LS/HNPCC and a CID were compared to 43 patients with LS/HNPCC but no *** occurred in 84.2% with a CID compared to 76.7% without a CID(P=0.74)with no difference in age at first cancer diagnosis 45.5±14.6 vs 43.8±7.1 years(P=0.67).LS specific cancers were diagnosed in 52.4% with a CID vs 44.2% without a CID(P=0.54).Nine of 21(42.9%)patients were exposed to biologics or immunomodulators for the treatment of their *** after diagnosis of CID was seen in 7(77.8%)of exposed individuals vs 5(41.7%)individuals unexposed to biologics/immunomodulators(P=0.18).All 7 exposed compared to 3/5 unexposed developed a LS specific *** exposed and unexposed groups were followed for a median 10 years and 8.5 years,*** hazard ratio for cancer with medication exposure was 1.59(P=0.43,95%CI:0.5-5.1).CONCLUSION In patients with LS/HNPCC,the presence of a concurrent inflammatory condition,or use of immunosuppressive medication to treat the inflammatory condition,might not increase the rate of cancer occurrence in this limited study.

关键词： Lynch syndrome Hereditary non-polyposis colorectal cancer Inflammatory bowel disease Immunosuppression Biologics

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高稳定微管中温质子导电燃料电池的电化学性能研究

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西北大学学报（自然科学版） 2021年第3期51卷 491-496页

作者：陈长城蒯越李隆 benjamin Rainwater 白耀辉西安建筑科技大学理学院陕西西安710055 佐治亚理工学院材料科学与工程学院亚特兰大30332 华南理工大学化学与化工学院广东广州510641

采用相转化方法,以质子导体BaZr0.1Ce0.7Y0.1Yb0.1O3-δ(BZCYYb)材料为电解质,制备了阳极支撑微管Ni-BZCYYb|BZCYYb|La0.6Sr0.4Co0.2Fe0.8O3-δ-Sm0.2Ce0.8O2-δ中温固体氧化物燃料电池。阳极、电解质和阴极的厚度分别为200μm、12μm和10μm。以加湿(3 vol.%H2O,30 sccm)氢气为燃料,空气为氧化剂进行电化学阻抗谱测试,电池在750℃、700℃、650℃和600℃的峰值功率密度分别为1.070 W/cm2、0.976 W/cm2、0.815 W/cm2和0.700 W/cm2。在750~600℃进行交流阻抗谱测试,Ni-BZCYYb阳极和LSCF阴极的浓度极化值仅为0.014~0.02Ω·cm2。BZCYYb电解质致密、无裂纹,电极具有非对称海绵状微孔,非常有利于形成三相界面,进而加速质子输运及反应。

关键词：相转化燃料电池电解质浓度极化交流阻抗谱

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入侵植物粗毛牛膝菊根际土壤和根系真菌群落会沿海拔扩散路径发生变化

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Journal of Plant Ecology 2023年第1期16卷 105-122页

作者： Rui-Ling Liu Wen-Gang Zhang benjamin R.Lee Gang Liu Xing-Jiang Song Xiao-Yan Chen Jia-Bin Zou Fang-Fang Huang Zhi-Hong Zhu College of Life Sciences Shaanxi Normal UniversityXi’an 710119China Carnegie Museum of Natural History PittsburghPA 15213USA Department of Biological Sciences University of PittsburghPittsburghPA 15213USA Holden Forest and Gardens KirtlandOH 44094USA National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China Shaanxi Normal UniversityXi’an 710119China Guangdong Provincial Key Laboratory of Silviculture Protection and UtilizationGuangdong Academy of ForestryGuangzhou 510520China

与入侵植物相关的真菌群落可能会随着海拔发生变化,这可能会影响入侵植物的表现和入侵力。我们最近的研究表明,入侵植物粗毛牛膝菊(Galinsoga quadriradiata)的根系AMF侵染率随着海拔的升高而下降。然而,尚不清楚这是否与真菌群落沿海... 详细信息

与入侵植物相关的真菌群落可能会随着海拔发生变化,这可能会影响入侵植物的表现和入侵力。我们最近的研究表明,入侵植物粗毛牛膝菊(Galinsoga quadriradiata)的根系AMF侵染率随着海拔的升高而下降。然而,尚不清楚这是否与真菌群落沿海拔的变化相关。为此,我们采用高通量测序技术、功能分组和线性分析等方法,研究了秦巴山区的粗毛牛膝菊根际土壤和根系真菌群落组成与结构沿海拔的变化趋势。研究结果表明,粗毛牛膝菊根际土壤和根系真菌群落物种多样性和种类组成随海拔升高发生了显著变化。在根际土壤中真菌群落香农-威纳多样性指数随着海拔升高呈上升趋势,而在根系中则呈下降趋势。同时,在根际土壤中共生真菌的相对丰度随海拔高度没有发生显著变化,而在根系中呈下降趋势;在根际土壤中病原真菌的相对丰度随着海拔呈下降趋势,而在根系中呈上升趋势。这些研究结果暗示,该种在向研究区域高海拔地区入侵时,土壤共生真菌的供给并不会缺乏,但其与这些真菌之间建立并维持共生关系的能力降低了;在向高海拔扩张过程中,该种倾向于在根系中积累更多的病原真菌,而减少对共生真菌的依赖。这些研究结果说明,入侵植物与真菌群落之间的相互作用会沿着海拔梯度发生显著变化,植物地下部分与真菌的相互作用可能是我们理解外来种如何在高海拔环境中入侵成功的关键。

关键词：入侵植物范围扩张真菌多样性真菌丰度共生菌病原菌

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