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Solvent extraction of U(Ⅵ) by N,N-dimethyl-N',N'-dioctylsuccinylamide and N,N-dimethyl-N',N'-didecylsuccinylamide in cyclohexane

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Nuclear Science and Techniques 2016年第3期27卷 68-73页

作者： Yu Cui Xiao-feng Yang cheng Yang Ye-Xin Li guo-Zhu Chen guo-Xin Sun School of Chemistry and Chemical Engineering University of Jinan

The extraction of uranyl nitrate by novel extractants of N,N-dimethyl-N',N'-dioctylsuccinylamide(DMDOSA)and N,N-dimethyl-N',N'-didecylsuccinylamide(DMDDSA) from aqueous nitric/nitrate solutions was *** was found both the concentration of HNO_3 and extractants had an effect on the U(Ⅵ) extraction *** extraction mechanism was established,and stoichiometry of the main extracted species was confirmed to be UO_2(NO_3)_2·2DMDOSA and UO_2(NO_3)_2·2DMDDSA,*** of the extraction reactions are *** spectral study of the U(Ⅵ) extracted species was also made.

关键词：溶剂萃取二甲基环己烷 ftir光谱硝酸铀酰化学计量比 O3浓度萃取反应

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60例尿道狭窄或闭锁的外科治疗

新疆医科大学学报 2005年第9期28卷 860-862页

作者：耿进成宋国宏冯连成郎斌张恩深新疆医科大学第五附属医院泌尿外科新疆乌鲁木齐830011

目的:探讨尿道狭窄或闭锁的治疗效果。方法:对60例尿道狭窄或闭锁患者的临床资料进行了回顾性分析,前尿道狭窄或闭锁25例,行开放手术11例,腔内手术14例;后尿道狭窄或闭锁35例,行开放手术12例,腔内手术23例,术后均口服维拉帕米、维生素C... 详细信息

目的:探讨尿道狭窄或闭锁的治疗效果。方法:对60例尿道狭窄或闭锁患者的临床资料进行了回顾性分析,前尿道狭窄或闭锁25例,行开放手术11例,腔内手术14例;后尿道狭窄或闭锁35例,行开放手术12例,腔内手术23例,术后均口服维拉帕米、维生素C、维生素E治疗1-3个月。结果:25例前尿道狭窄或闭锁患者手术均获成功,排尿通畅。35例后尿道狭窄或闭锁患者,行开放手术12例中,术后排尿通畅10例,排尿困难2例,尿道造影显示尿道狭窄,其中1例后行腔内手术治愈;行腔内手术23例中,术后排尿通畅22例,排尿困难1例,尿道造影显示尿道狭窄。随访6个月-1年,58例排尿通畅,2例排尿困难,其中1例行定期尿道扩张,1例行膀胱造瘘术引流尿液。结论:术前了解尿道狭窄状况,选择适当的手术方法,充分切除或切开疤痕,积极预防感染并配合抗疤痕组织药物治疗是手术成功的重要保证。

关键词：尿道狭窄尿道闭锁外科手术药物治疗

Research on uplink coordinated transmission schemes in LTE-advanced systems

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The Journal of China Universities of Posts and Telecommunications 2011年第2期18卷 72-77页

作者： WANG Ya-feng WEI guo-xing YANG Da-cheng WEI Xiang School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China Faculty of Engineering and Surveying University of Southern Queensland Toowoomba QLD 4350 Australia

The investigation of inter-cell interference mitigation techniques is a key area in wireless *** multiple points（CoMP） transmission/reception is a candidate technique for interference cancellation in 3GPP LTE-Advanced ***,the coordination scheme in CoMP remains a key research problem to be solved,which will have a strong influence on the performance of *** this paper,a novel coordinated transmission scheme is proposed for the uplink LTE-Advanced *** our scheme,several base transceiver stations（BTS） and users are selected as coordination partners which form a CoMP *** processing is used at the receiver to mitigate *** the perspective of coordinated partner selection,our scheme can be divided into static and dynamic coordination which are both considered to fully exploit the throughput gain of *** proposed schemes are evaluated by system level simulation and compared with the conventional LTE system based upon single cell *** simulation results demonstrate that the proposed schemes attain superior performance as opposed to the conventional system in terms of cell average and cell edge throughput.

关键词： CoMP joint processing inter-cell interference static coordination dynamic coordination

Large-scale gene expression reveals different adaptations of Hyalopterus persikonus to winter and summer host plants

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Insect Science 2017年第3期24卷 431-442页

作者： Na Cui Peng-cheng Yang Kun guo Le Kang feng Cui State Key Laboratory of Integrated Management of Pest Insects & Rodents Institute of Zoology Chinese Academy of Sciences Beijing 100101 Beijing Institutes of Life Science Chinese Academy of Sciences Beijing 100101 Institute of Medicinal Plant Development Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100193 University of Chinese Academy of Sciences Being 100049 China

Host alternation, an obligatory seasonal shifting between host plants of distant genetic relationship, has had significant consequences for the diversification and success of the superfamily of aphids. However, the underlying molecular mechanism remains unclear. In this study, the molecular mechanism of host alternation was explored through a large-scale gene expression analysis of the mealy aphid Hyalopterus persikonus on winter and summer host plants. More than four times as many unigenes of the mealy aphid were significantly upregulated on summer host Phragmites australis than on winter host Rosaceae plants. In order to identify gene candidates related to host alternation, the differentially expressed unigenes of H. persikonus were compared to salivary gland expressed genes and secretome of Acyrthosiphon pisum. Genes involved in ribosome and oxidative phosphorylation and with molecular functions of heme-copper terminal oxidase activity, hydrolase activity and ribosome binding were potentially upregulated in salivary glands of//. persikonus on the summer host. Putative secretory proteins, such as detoxification enzymes （carboxylesterases and cytochrome P450s）, antioxidant enzymes （peroxidase and superoxide dismutase）, glutathione peroxidase, glucose dehydrogenase, angiotensin-converting enzyme, eadherin, and calreticulin, were highly expressed in H. persikonus on the summer host, while a SCP GAPR-I-like family protein and a salivary sheath protein were highly expressed in the aphids on winter hosts. These results shed light on phenotypic plasticity in host utilization and seasonal adaptation of aphids.

关键词： aphid host alternation parasite-host interaction phenotypic plasticity salivary gland transcriptome

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

汽车内饰聚丙烯材料VOC产生和自然衰减研究

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合成材料老化与应用 2017年第2期46卷 1-6,12页

作者：杨波彭莉李振华罗忠富姚程吴国锋马金成金发科技股份有限公司广东广州510663 通标标准技术服务有限公司广州分公司(SGS) 广东广州510663

通过检测汽车内饰材料在室温(25℃)条件下放置不同时间后的VOC浓度得出VOC的衰减规律。材料中的甲苯、甲醛和乙醛都可以衰减至约20μg/m^3,但呈现衰减速率随不同材料而异。进而分析了甲苯、TVOC、甲醛、乙醛等物质的衰减规律差异性:苯类... 详细信息

通过检测汽车内饰材料在室温(25℃)条件下放置不同时间后的VOC浓度得出VOC的衰减规律。材料中的甲苯、甲醛和乙醛都可以衰减至约20μg/m^3,但呈现衰减速率随不同材料而异。进而分析了甲苯、TVOC、甲醛、乙醛等物质的衰减规律差异性:苯类VOC的衰减速率要小于醛类VOC的衰减速率,而醛类中的乙醛衰减速率要大于甲醛的衰减速率。该研究为后续低VOC车用内饰材料的开发以及VOC加速衰减的研究提供参考。

关键词：汽车内饰聚丙烯材料挥发性有机物(VOC) 衰减

Effects of reservoirs on seasonal discharge of Irtysh River measured by Lepage test

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Water Science and Engineering 2014年第4期7卷 363-372页

作者： feng HUANG Zi-qiang XIA Li-dan guo Fu-cheng YANG State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University College of Hydrology and Water Resources Hohai University Sichuan Electric Power Design and Consulting Co. Ltd.

The Irtysh River is an intemational river partially joining the territories of China, Kazakhstan, and Russia. Cascade reservoirs have been constructed in the upper reaches of the river and their effects on the seasonal discharge of the middle and lower reaches were analyzed considering the mean and dispersion of the seasonal discharge. The Lepage test, which is a nonparametric, two-sample test for detecting location and dispersion, was used to measure the significance of difference between the pre-dam and post-dam seasonal discharge. The results show that the reservoirs＇ effects on the seasonal discharge varied with the season. In the middle reaches of the river, the summer and autumn discharge decreased significantly and their inter-annual variabilities also decreased significantly. The summer and autumn precipitation over the Irtysh River Basin changed little before and after the operation of the reservoir, which indicates that the discharge changes mainly due to water storage of the reservoirs. The reservoirs store water in summer and autumn and store more water in a wet year, which leads to the reduction of the mean and dispersion of the summer and autumn discharge. The winter discharge increased significantly because the reservoirs released water for power generation. The spring discharge changed slightly. In the lower reaches, only the winter discharge increased significantly, and the other seasonal discharge changed slightly. The reservoirs＇ effects on the seasonal discharge are more significant in the middle reaches than in the lower reaches.

关键词： seasonal discharge effects of reservoirs Lepage test Irtysh River

Radiomics and molecular analysis:Bridging the gap for predicting hepatocellular carcinoma prognosis

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World Journal of Clinical Cases 2025年第4期13卷 56-60页

作者： Chun-Han cheng Wen-Rui Hao Tzu-Hurng cheng Department of Medical Education Linkou Chang Gung Memorial HospitalTaoyuan 33305TaiwanChina Division of Cardiology Department of Internal MedicineShuang Ho HospitalMinistry of Health and WelfareTaipei Medical UniversityNew Taipei 23561TaiwanChina Division of Cardiology Department of Internal MedicineSchool of MedicineCollege of MedicineTaipei Medical UniversityTaipei 11002TaiwanChina Department of Biochemistry School of MedicineCollege of MedicineChina Medical UniversityTaichung 404333TaiwanChina

This editorial examines a recent study that used radiomics based on computed tomography(CT)to predict the expression of the fibroblast-related gene enhancer of zeste homolog 2(EZH2)and its correlation with the survival of patients with hepatocellular carcinoma(HCC).By integrating radiomics with molecular analysis,the study presented a strategy for accurately predicting the expression of EZH2 from CT *** findings demonstrated a strong link between the radiomics model,EZH2 expression,and patient *** noninvasive approach provides valuable insights into the therapeutic management of HCC.

关键词： Hepatocellular carcinoma Computed tomography Radiomics Enhancer of zeste homologue 2 expression Non-invasive imaging

Efficient base-free oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid over copper-doped manganese oxide nanorods with tert-butanol as solvent

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Frontiers of Chemical Science and Engineering 2021年第4期15卷 960-968页

作者： feng cheng Dongwen guo Jinhua Lai Meihui Long Wenguang Zhao Xianxiang Liu Dulin Yin National&Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceCollege of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China

2,5-Furandicarboxylic acid(FDCA)is an important and renewable building block and can serve as an alternative to terephthalic acid in the production of biobased degradable *** this study,Cu-doped MnO_(2) nanorods were prepared by a facile hydrothermal redox method and employed as catalysts for the selective oxidation of 5-hydroxymethylfurfural(HMF)to FDCA using tert-butyl hydroperoxide(TBHP)as an *** catalysts were characterized using X-ray diffraction analysis,Fourier transform infrared spectroscopy,thermo-gravimetric analysis,and transmission electron *** effects of oxidants,solvents,and reaction conditions on the oxidation of HMF were investigated,and a reaction mechanism was *** results demonstrated that 99.4% conversion of HMF and 96.3% selectivity of FDCA were obtained under suitable conditions,and tert-butanol was the most suitable solvent when TBHP was used as an *** importantly,the Cu-doped MnO_(2) catalyst can maintain durable catalytic activity after being recycled for more than ten times.

关键词： 5-hydroxymethylfurfural 2,5-furandicarboxylic acid selective oxidation Cu-doped MnO_(2) biomass transformation