中国科学院机构知识库网格系统: 检索

Targeting ST8SIA6-AS1 counteracts KRAS^G12C inhibitor resistance through abolishing the reciprocal activation of PLK1/c-Myc signaling 期刊论文 OAI收割
EXPERIMENTAL HEMATOLOGY & ONCOLOGY, 2023, 卷号: 12, 期号: 1, 页码: 22
作者: Wang, Yafang; Yao, Mingyue; Li, Cheng; Yang, Kexin; Qin, Xiaolong

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KRAS(G12C) c-Myc PLK1 LncRNA ST8SIA6-AS1 Drug resistance

近海环境中抗生素分析样品前处理技术的研究进展 期刊论文 OAI收割
色谱, 2020, 卷号: 38, 期号: 1, 页码: 95-103
作者: 吕敏; 陈令新

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抗生素近海前处理技术综述 antibiotics coastal pretreatment techniques review The widespread and massive usage of antibiotics for the prevention and treatment of diseases in human and animals have resulted in their continuous discharge into the environment, and finally, into the coastal environment through various pathways. Accumulation of antibiotics in aquatic organisms poses a great threat to ecological and human health, especially because it facilitates the generation and spread of bacterial resistance. Given the diverse range of antibiotics with various features, as well as their presence at low concentrations in the environment, it is imperative to develop pretreatment techniques for antibiotics in various matrices. In this paper, the pretreatment methods proposed in recent decades for antibiotics in coastal water, sediment, and biota are summarized, with emphasis on commonly used methods such as solid-phase extraction, solid-liquid extraction, matrix solid-phase dispersion, and QuEChERS. Additionally, the potential factors influencing the extraction performance and clean-up efficiency are analyzed. The advantages and disadvantages of the methods and their development are finally discussed.

丛枝菌根增强植物砷抗性生理机制研究 学位论文 OAI收割
北京: 中国科学院生态环境研究中心, 2018
作者: 李景龙

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收藏 | 浏览/下载：95/0 | 提交时间：2019/07/05

丛枝菌根共生体,砷抗性,积累分配,形态转化,基因表达 Arbuscular Mycorrhizal Symbiosis,As Resistance,Accumulation And Translocation,Transformation,Gene Expression

Structure and magnetic properties of (Al, Co) Co-doped ZnO thin films (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Materials Science and Nanotechnology, ICMSN 2012, November 16, 2012 - November 18, 2012, Guangzhou, China
Cao P.; Bai Y.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

In this study Zn0.99Co0.01Al0.015O thin film has been prepared by sol-gel method. The structural and magnetic properties of the sample were investigated. X-ray diffraction spectroscopy analyses indicate that the Co and Al codoping can not disturb the structure of ZnO. No additional peaks are observed in the Zn0.99Co0.01Al xO and Al3+ and Co2+ substitute for Zn 2+ without changing the wurtzite structure. The resistance measurements confirm that Al ions increase the free carriers concentration. Based on the above experiments we think the ferromagnetic behavior of the sample could not originate from Co nanoclusters. The presence of free carriers and localized d spins is a prerequisite for the appearance of ferromagnetism. As the result the carriers generated by Al doping is considered a main factor to induce the ferromagnetic phenomenon. (2013) Trans Tech Publications Switzerland.

A novel miniature absolute metal rotary encoder based on Single-track Periodic Gray Code (EI CONFERENCE) 会议论文 OAI收割
2012 2nd International Conference on Instrumentation and Measurement, Computer, Communication and Control, IMCCC 2012, December 8, 2012 - December 10, 2012, Harbin, Heilongjiang, China
作者: Sun Y.; Yang S.-W.; Sun Y.; Wan Q.-H.

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In order to improve the resolution and enhance the impact resistance and vibration resistance of encoders a novel absolute metal rotary encoder based on Single-track Periodic Gray Code is presented. The configuration and working principle of the encoder is introduced and then the metal code disc which can realize full scale absolute encoding on one single track and its corresponding metal slit disc are proposed. Finally the data acquisition and processing system based on FPGA of encoder is presented. The resolution of the encoder can reach 5.27through electronic subdivision and calibration between the precision code and the coarse code with its volume only 4840mm. The encoder has some advantages such as small volume low cost high resolution and strong impact resistance. 2012 IEEE.

Arsenic accumulation and resistance mechanism in Panax notoginseng, a traditional rare medicinal herb SCI/SSCI论文 OAI收割
2012
Yan X. L.; Lin L. Y.; Liao X. Y.; Zhang W. B.

收藏 | 浏览/下载：24/0 | 提交时间：2012/09/04

Panax notoginseng Arsenic (As) Speciation Resistance Subcellular distribution Antioxidation pteris-vittata l. speciation plant

Research on defect detection technology of C/C composite (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Advanced Engineering Materials and Technology, AEMT 2011, July 29, 2011 - July 31, 2011, Sanya, China
作者: Li W.; Wang H.; Wang H.; Wang H.; Wang H.

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Carbon matrix/Carbon fibre reinforced composite(C/C composite) has many special characteristics such as high strength high elastic modulus high temperature resistance and ablation resistance. So it is used to manufacture rocket engine nozzle in aerospace filed. But its security will be seriously effected during rocket engine working due to the manufacturing defects. Based on analyzing defect types and structure characteristic of C/C composite the ultrasonic and infrared testing methods on C/C composite are further studied in this thesis. and effective defect detection has been achieved. (2011) Trans Tech Publications.

Thermal-structure analysis of supersonic dome based on three materials (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Jiang Z.; Ai X.; Wei Q.; Liu B.; Jia H.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

To a supersonic missile a seeker could enhance the aerodynamic ability due to decrease the resistance in flying. At the same time the primary function of a seeker has been considered as the most important equipment for a missile due to the importance for cueing of targets and tracking for the final approach. However the dome of a seeker which is made up of glass has poor mechanical performance. Especially in the higher altitude for a dome in which the aerothermal and pressure loads could destroy the structure easily it is necessary to do the thermal-structure coupled analysis due to varied materials. In the paper to take the spherical dome of a seeker as a example the analysis has been completed according to the varied materials consist of MgF2 Al2O3 and ZnS. The temperature loads and the pressure loads derived from the results of fluent analysis has been forced on the surface of dome which simulates the actual Mach 2.5 in flying. According to the results of coupled analysis the SEQV stress of the dome radium 80mm based on three materials had reached to 31MPa which shows that the strength is sufficient for Mach 2.5 and offered the warranty to design the attaching to missile for the dome. At the same time the results required the flexible mounting for the dome due to the displacements results which the crystal material couldn't accept. 2011 IEEE.

Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore 期刊论文 OAI收割
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 卷号: 20, 期号: 6, 页码: 1171-1176
作者: Cui Richeng; Yang Hongying; Chen Sen; Zhang Shuo; Li Kefeng

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As3+ As5+ bacterial leaching arsenic resistance oxidant arsenic-bearing gold ore

Valence variation of arsenic in bioleaching process of arsenic-bearing gold ore 期刊论文 OAI收割
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2010, 卷号: 20, 期号: 6, 页码: 1171-1176
作者: Cui Richeng; Yang Hongying; Chen Sen; Zhang Shuo; Li Kefeng

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收藏 | 浏览/下载：20/0 | 提交时间：2021/02/02

As3+ As5+ bacterial leaching arsenic resistance oxidant arsenic-bearing gold ore