|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Relati4n between the in situ stress field and geological tectonics of a gold mine area in Jiaodong Peninsula, China 显示文摘 | Shengjun Miao Yuan Li Wenhui Tan Fenhua Ren | 2012 | International Journal of Rock Mechanics and Mining Sciences2012，51，4： | 1 |
| 2 | A combined pig model to determine the net absorption of volatile fatty acids in the large intestine under different levels of crude fiber显示文摘Background:This study aimed to develop a combined model to quantify the net absorption of volatile fatty acids(VFA)in the large intestine(LI)of pigs.Methods:Fifteen female growing pigs(Duroc×Large White×Landrace)were ranked by body weight(30±2.1 kg)on day 0 and assigned to one of three treatments,namely the basal diet containing different crude fiber(CF)levels(LCF:3.0%CF,MCF:4.5%CF,and HCF:6.0%CF).The pigs were implanted with the terminal ileum fistula and the cannulation of the ileal mesenteric vein(IMV),portal vein(PV),and left femoral artery(LFA)from days 6 to 7.[13 C]-Labeled VFA and P-aminohippuric acid were constantly perfused into the terminal ileum fistula and the cannulation of the IMV(day 15),respectively.Blood samples were collected from the PV and the LFA during perfusion(5 h),and LI samples were collected.Results:The net flux of[12 C]-acetic acid in the PV was greater for LCF versus MCF(p=0.045),but no difference was observed in the net flux of[12 C]-propionic acid(p=0.505)and[12 C]-butyric acid(p=0.35)in the PV among treatments.The deposition of[12 C]-acetic acid in the LI was greater for LCF versus MCF(p=0.014),whereas the deposition of[12 C]-propionic acid(p=0.007)and[12 C]-butyric acid(p=0.037)in the LI was greater for LCF versus HCF.Conclusions:In conclusion,this pig model was found conducive to study the net absorption of VFAs in the LI,and LCF had more net absorption of VFAs in the LI than MCF and HCF. | Shengjun Zhao Liangkang Lv Taotao Wu Zhi Feng Qiang Li Long Lei Zhengya Liu Hui Zhang Ying Ren | 2023 | Animal Models and Experimental Medicine2023，6，4： | 0 |
| 3 | Cloning, construction of prokaryotic expression vector and expression of Escherichia coli cytosine deaminase gene显示文摘Cytosine deaminase gene of Escherichia coli strain H30 was cloned, and its initiation codon of ’GTG’ was mutated to ’ATG’ by PCR. Prokaryotic recombinant expression vector pBV220CD was constructed. Clone with high enzyme activity were selected by detecting their specific activity of cytosine deaminase. 5FC(5FC, 5fluorocytosine) could induce the lethal toxicity to cells containing active CD gene. DNA sequence analysis indicated that there were 16 altered bases and 5 of them resulted in the alteration of amino acids in predicted peptide by comparing DNA sequence of the clone H30CD11 with high enzyme activity with CD gene reported in Gene Bank. | Shengjun Ren Huiqiu Jiang Jianren Gu | 1998 | Chinese Science Bulletin1998，43，3： | 0 |
| 4 | Secure optical communication using a quantum alarm显示文摘Optical fibre networks are advancing rapidly to meet growing traffic demands.Security issues,including attack management,have become increasingly important for optical communication networks because of the vulnerabilities associated with tapping light from optical fibre links.Physical layer security often requires restricting access to channels and periodic inspections of link performance.In this paper,we report how quantum communication techniques can be utilized to detect a physical layer attack.We present an efficient method for monitoring the physical layer security of a high-data-rate classical optical communication network using a modulated continuous-variable quantum signal.We describe the theoretical and experimental underpinnings of this monitoring system and the monitoring accuracy for different monitored parameters.We analyse its performance for both unamplified and amplified optical links.The technique represents a novel approach for applying quantum signal processing to practical optical communication networks and compares well with classical monitoring methods.We conclude by discussing the challenges facing its practical application,its differences with respect to existing quantum key distribution methods,and its usage in future secure optical transport network planning. | Yupeng Gong Rupesh Kumar Adrian Wonfor Shengjun Ren Richard V.Penty Ian H.White | 2020 | Light(Science & Applications)2020，9，1： | 0 |
| 5 | Enhancing the stability of Ni Fe-layered double hydroxide nanosheet array for alkaline seawater oxidation by Ce doping显示文摘Electrocatalytic hydrogen production from seawater holds enormous promise for clean energy generation.Nevertheless,the direct electrolysis of seawater encounters significant challenges due to poor anodic stability caused by detrimental chlorine chemistry.Herein,we present our recent discovery that the incorporation of Ce into Ni Fe layered double hydroxide nanosheet array on Ni foam(Ce-Ni Fe LDH/NF)emerges as a robust electrocatalyst for seawater oxidation.During the seawater oxidation process,CeO_(2)is generated,effectively repelling Cl^(-)and inhibiting the formation of Cl O-,resulting in a notable enhancement in the oxidation activity and stability of alkaline seawater.The prepared Ce-Ni Fe LDH/NF requires only overpotential of 390 m V to achieve the current density of 1 A cm^(-2),while maintaining long-term stability for 500 h,outperforming the performance of Ni Fe LDH/NF(430 m V,150 h)by a significant margin.This study highlights the effectiveness of a Ce-doping strategy in augmenting the activity and stability of materials based on Ni Fe LDH in seawater electrolysis for oxygen evolution. | Yongchao Yao Shengjun Sun Hui Zhang Zixiao Li Chaoxin Yang Zhengwei Cai Xun He Kai Dong Yonglan Luo Yan Wang Yuchun Ren Qian Liu Dongdong Zheng Weihua Zhuang Bo Tang Xuping Sun Wenchuang(Walter)Hu | 2024 | Journal of Energy Chemistry2024，91，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员