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| 1 | Soil microbial communities as potential regulators of N2O sources in highly acidic soils显示文摘●Soil pH was a key driver of N2O emission and sources in acidic soils.●N2O emission was significantly positively associated with the ratio of ITS to 16S.●N2O was significantly correlated with bacterial and fungal community composition.●Fungi contributed to N2O in highly acidic tea plantations and vegetable fields.Acidic soil is a main source of global nitrous oxide(N2O)emissions.However,the mechanism behind the high N2O emissions from acidic soils remains a knowledge gap.The objective of this microcosm incubation study was to pin-point the microbial mechanisms involved in N2O production processes in acidic soils.For that purpose,the isotopic signatures and microbial community structure and composition of four soil samples were examined.The results showed that highly acid soils(pH=3.51)emitted 89 times more N2O than alkaline soils(pH=7.95)under the same nitrogen(N)inputs.Fungal denitrification caused high N2O emissions in acidic soils.ITS to 16S abundance ratio was positively correlated with cumulative N2O emissions from the tested soils.The highly acid soils(pH<4.5)showed greater fungal nirK gene abundance and lower abundance of AOA-amoA,AOB-amoA,nirK,nosZ I and nosZ II genes.The unclassified Aspergillaceae fungi(63.65%)dominated the highly acidic soils and was the most strongly correlated genus with N2O emissions.These findings highlight that soil microbial community structures,denitrifying fungi in particular,shaped by low pH(pH<4.5)lead to high N2O emissions from acidic soils. | Junhui Yin Huaihai Chen Pengpeng Duan Kun Zhu Naihui Li Yan Ma Yumeng Xu Jingheng Guo Rui Liu Qing Chen | 2023 | Soil Ecology Letters2023，5，4： | 1 |
| 2 | Mechanisms of Cytochrome C Extraction by Reverse Micelles显示文摘The extraction of cytochrome C was carried out by means of phase transfer technique with three different reverse micellar systems, i.e. , a CTAB micellar solution in n butyl alcohol chloroform(volume ratio 4∶1), an AOT micellar solution in isooctane and a SDSS D 2EHPA micellar solution in isooctane. The extraction mechanisms were studied. The results show that the extraction mechanisms for the same proteins with different types of reverse micellar systems can be distinct. The extraction of cytochrome C with CTAB and SDSS D 2EHPA reverse micellar systems are carried out according to the mechanism of electrostatic interaction. However, in the extraction of cytochrome C with the AOT reverse micellar system, the electrostatic interaction between the protein and the surfactant is not important. | YU Yan chun * and QIAN Bao hua (Department of Chemical Engineering, Huaihai Institute of Technology, Lianyungang 222005, P.R. China) CHU Ying, WU Zi sheng and GAO Chang qing (Department of Chemistry, Northeast Normal University, Changchun 130024 | 2001 | Chemical Research in Chinese Universities2001，17，1： | 1 |
| 3 | Measurement of Noise on Ground of Power Supply System显示文摘Ground is a more important part of EMC in electronic circuits and equipments. In term of applications, it includes safety ground and signal ground. 1. Safety ground Safety ground means connecting the chassis of electronic equipment and earth together through the low resistance conductor. It is required to ensure the safety of people near the devices and | Zhang Shu and Yan Huaihai | 2004 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2004，，1： | 0 |
| 4 | Design of DC Power Supply Controller显示文摘One DC power supply controller was designed to test interface of DC current-stabilized PS in HIRFL. More than 250 power supplies have been replaced by new ones since 2000. And the interface between PS and control system is also very different compared with the old ones. It is necessary to design a controller to test the interface. In fact, the controller simulates the control system to control the PS. So it should give the analog reference to PS by D/A, and read the PS's output current and voltage signal by A/D. At the same time, the controller can control the operation of PS, such as turn on and turn off, and also read back all status of PS. | Yan Huaihai, Gao Daqing and Zhang Xianlai | 2004 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2004，，1： | 0 |
| 5 | Status of HIRFL Power Supply System Upgrading显示文摘In resent years, HIRFL DC power supply system upgrading is concentrated on middle power and low power output converters. Except small power supplies for corrector magnet, there are 183 power supplies in this part. The output power varies from 6 kW to 36 kW, current stability is from ±100 ppm to ±20 ppm per 8 hours. Most of them are used to drive trim coils of SSC and quadrupole magnets of beam transport line. There are | Zhou Sixin, Zhang Shu, Feng Xiuming and Yan Huaihai | 2002 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2002，，1： | 0 |
| 6 | Improvement of Main Magnetic Field Power Supply of SFC显示文摘The main magnetic field power supply is used for establishing main magnetic field of SFC, therefore excellent current stability and low ripple are required. Its DC output current range is 0~1300 A and max output voltage is 230 V. The power supply has been put into operation since Sep. in 2000, and was replaced in 033 room from 166 room of No.2 Building. We have improved the performance of power supply in this period. | Zhang Xianlai, Yan Huaihai, Xin Junye and Zhang Shu | 2003 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2003，，1： | 0 |
| 7 | Measurement of High Power Current-Stabilized Power Supply with High Stability显示文摘The DC power supply system of HIRFL has been upgraded since 1999, these new power supplies are used mainly as high frequency ZVS soft-switching converters or thyristor phase-controlled rectifiers. Each power supply is strictly tested before being put into operation, especially for long-term current stability, current ripple, efficiency, repeatability, EMI and so on. The tested results indicated that performances of power supplies satisfy requirement of HIRFL. | Yan Huaihai, Feng Xiuming, Bai Zhen and Zhou Zhongzu | 2003 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2003，，1： | 0 |
| 8 | Analysis and Measurement of Electromagnetic Compatibility of High Power Switching Power Supply显示文摘Electromagnetic compatibility (EMC) is capability that the devices and systems can normally operate within electromagnetic environment itself. It is also an applied technology, which is used to study the compatibility of electrical and electronic devices and systems within the common electromagnetic environment without a degradation of performance. EMC includes two meanings. The first is the device and system should be immune from electromagnetic disturbance. The second is electromagnetic interference should be suppressed not only below limit of disturbance, but also couldn't exceed the degree that anything can endure, that includes the other devices and systems, as well as human being, animal and plant. | Zhang Shu, Bai Zhen, Yan Huaihai, Feng Xiuming and Yuan Zhengdong | 2003 | 近代物理研究所和兰州重离子加速器实验室年报:英文版2003，，1： | 0 |
| 9 | Multi-channel High Precision Measure System for DC Current Stability of Power Supply显示文摘The DC current stability is an important parameter of the HIRFL power supplies.With the requirement of HIRFL power supplies reconstruction,the multi-channel high precision measurement system for DC current stability of power supply has been developed.The measurement of DC current stability has strict requirement in hardware design and software development,it requhes that the measure system can exelude all sorts of | Yan Huaihai and Feng Xiuming | 2001 | IMP & HIRFL Annual Report2001，，1： | 0 |
| 10 | First Beam Commissioning of SSC-Linac as an Injector of SSC显示文摘The construction of the SSC-Linac has made significant progress in 2019.The first beam commissioning of SSC-Linac as an injector of the Separated Sector Cyclotron(SSC)was performed succssfully with ^(40)Ar^(7+) beam and the particle energy of 5.98 MeV/u was obtained at the exit of SSC on December 17,2019. | Du Heng Yin Xuejun Yang Weiqing Li Zhongshan Kong Qiyu Li Xiaoni Yang Shengli Qian Cheng WangHaoning Cong Yan Jin Peng Zhang Ruifeng Han Xiaodong Fu Xin Wang Kai Jing Long Zhang Yong Li Lili Xie Wenjun Xu Xiaowei Wang Shaoming Chen Wenjun Liu Xiaojun Yue Min An Jingrui Zhang Xiang Yan Huaihai Feng Anhui Zhang Shuai Zhang Yongbo Sun Peng Zhu Tieming Sha Xiaoping Xu Jianye Sun Xiaolong Su Xuemin Li Anping Yan Tailai Meng Jun Zhang Wei Wu Junxia Yao Qinggao Yang Yaqing Xu Zhe Sun Liangting Gao Daqing Yuan Youjin Yang Jiancheng Xia Jiawen | 2019 | IMP & HIRFL Annual Report2019，，1： | 0 |
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