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Lake sediment treatment with aluminum,iron,calcium and nitrate additives to reduce phosphorus release

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第9期10卷 1367-1373页

作者： Guang-rong LIU Chun-song YE jing-hao he Qin QIAN Hua JIANG College of Power and MechanicalEngineering Wuhan University Wuhan 430072 China

Treatment of lake sediments with salts is a promising approach for preventing phosphorus release from sediments. Five 35-d treatments of undisturbed sediment cores in the East Lake, Wuhan, China were applied under anoxic conditions： nothing added （control）, Al2（SO4）3 added, FeCl3 added, CaCl2 added, and NaNO3 added. To identify changes in the P binding sites in the sediment caused by the treatments, different P binding forms were extracted from the sediment before and after the treatments. We found that the mean P release rates for anoxic treatments with Al2（SO4）3, FeCl3, CaCl2 and NaNO3 were -0.6, 0.03, 0.6 and 2.6 mg/（m^2·d）, respectively, while the P release rate with no additives was 7.3 mg/（m^2·d）. In suboxic conditions, the concentration of total phosphorus （TP ge 657 mg/kg） in sediment was much lower than that of untreated sediment （TPaverage 688 mg/kg） and treatments with salts （TP（Al2（SO4）3） 793 mg/kg, TP（FeCl3） 781 mg/kg, TP（NaNO3） 802 mg/kg, TP（CaCl2） 747 mg/kg）. We also found that adding CaCl2 prevented P release because of apatite formation and because PCa （Ca bound P） increased at the sediment surface. Addition of Fe^3＋ and NO3^- to the sediment increased the amounts of PFe. Mn （Redox-sensitive P, mostly Fe and Mn compounds）, since iron oxide has the ability to combine P. Addition of Al2（SO4）3 increased the fraction of PAl, Fe （P bound to metal oxides （Al, Fe）） and decreased the P and Fe in the water above the anoxic sediment, showing the greater ability orAl in binding P. The results showed that Al2（SO4）3, FeCl3, CaCl2 and NaNO3 all had an effect in controlling phosphorus release. The effect was related to the forms of phosphorus existing in the sediment before treatment and the forms resulting after adding the four reagents. The combination of Al^3＋ or Fe^3＋ with NO3^- promises to be a reasonable chemical treatment for increasing the P retention capacity of sediments in eutrophic lakes. If chemical treatment is combined with bioremediation, the aim o

关键词： Sediment Internal phosphorus Aluminum Iron Calcium Nitrate P fraction

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Apoptosis of lumbar spinal cord neurons in cauda equina syndrome rats

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Journal of Pharmaceutical Analysis 2010年第2期22卷 120-122页

作者： Si-Yue Xu,Xi-jing he ,hao-Peng Li,Jie ChenThe Second Orthopedic Department,the Second Affiliated Hospital,Medical School of Xi’an Jiaotong University,Xi’an 710004,China. Second Orthopedic Department Second Affiliated Hospital Medical School of Xi'an Jiaotong University Xi'an 710004 China

Objective To explore the law of apoptosis of lumbar spinal cord neurons in cauda equina syndrome (CES). Methods Cauda equina of rats was compressed by a piece of silica gel stick. From day 1 to day 28,the lumbar spinal cord specimens were harvested and assessed by Nissl’s staining and TUNEL staining. Results Compression of cauda equina caused lesion and apoptosis of neurons in lumbar spinal cord,and the extent of apoptosis reached the peak on 7th day after compression. Conclusion Apoptosis of neurons in lumbar spinal cord might be one of the reasons why patients with CES get poor prognosis.

关键词： cauda equina syndrome apoptosis lumbar spine

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蓄滞洪区设立对汾河下游防洪的影响

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人民黄河 2017年第1期39卷 47-50页

作者：张景郝瑞霞何晓燕姜晓明朱兵太原理工大学水利科学与工程学院山西太原030024 中国水利水电科学研究院北京100038 中国农业大学北京100083

通过对汾河下游洪水特性和流域防洪状况的分析,针对汾河下游的河道特点、流域防洪状况,基于水流的连续方程和运动方程,建立了河道一维洪水演进模型,并合理规划蓄滞洪区。利用建立的模型对汾河新绛县南梁桥—河津水文站河段进行了数值模... 详细信息

通过对汾河下游洪水特性和流域防洪状况的分析,针对汾河下游的河道特点、流域防洪状况,基于水流的连续方程和运动方程,建立了河道一维洪水演进模型,并合理规划蓄滞洪区。利用建立的模型对汾河新绛县南梁桥—河津水文站河段进行了数值模拟。结果表明:模型计算流量与实测流量吻合较好;通过设定的蓄滞洪区分洪后,水位降幅明显,可减轻流域内防洪重点地区新绛、稷山、河津的防洪压力。

关键词：洪水特性洪水演进洪水防御蓄滞洪区汾河下游

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Molecular mechanism and research progress of traditional Chinese medicine in the treatment of prostate cancer

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Traditional Medicine Research 2025年第1期10卷 62-72页

作者： Hai-Luo Wang Ruo-Ran Zhang hao Wang Peng Xu jing-Kai Wang Bo Chen hao Xu Deng Pan Yu-Yang Ma Kun Pang Department of Urology Xuzhou Central HospitalXuzhou Clinical School of Xuzhou Medical CollegeXuzhou 221009China Graduate School Jiangsu UniversityZhenjiang 212013China Graduate School Bengbu Medical UniversityBengbu 233040China Department of Urology The Peixian People’s HospitalXuzhou 221699China.

Prostate cancer(PCa)is one of the most common malignant tumors in the male genitourinary system,ranking second in incidence *** Chinese medicine(TCM),as an important component of complementary and alternative medicine,shows unique advantages in cancer *** herbal medicine is usually composed of multiple ingredients and involves multiple signaling pathways,which showed function of inducing apoptosis of cancer cells,arresting the cell cycle,inhibiting invasion and metastasis,reducing drug resistance,and regulating immune *** therapy is also an important treatment of ***,Physical therapy such as acupuncture or Tai Chi and Qigong are gaining increased recognition in the management of PCa,particularly in addressing issues like urinary incontinence and bone metastasis-related *** article reviews the TCM treatment and therapy of PCa,in order to provide new research avenues and treatment options for the treatment of PCa with TCM and improve the quality of life of patients.

关键词： traditional Chinese medicine prostate cancer Chinese herbal medicine physical therapy

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碱性染料或四苯鉮与IO4-或TIBr4-缔合物为基的PVC膜离子选择电极——碱性染料结构对电极性能的影响

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化学学报 1984年第10期42卷 1094-1099页

作者：潘景浩何明威蔡丽真郭强李彦威孙志胜李澄山西大学化学系山西大学化学系太原

关于IO4-和Tl（III）电极的研制和应用已有报道.本文分别以不同的碱性染料（乙基紫、结晶紫、灿烂绿、孔雀绿、夜蓝、碘绿、罗丹明B、罗丹明6G、丁基罗丹明B、酚藏花红、藏红T、耐尔蓝）或四苯鉮[（C6H5）4As+]与IO4-或TlBr4-形成的离... 详细信息

关于IO4-和Tl（III）电极的研制和应用已有报道.本文分别以不同的碱性染料（乙基紫、结晶紫、灿烂绿、孔雀绿、夜蓝、碘绿、罗丹明B、罗丹明6G、丁基罗丹明B、酚藏花红、藏红T、耐尔蓝）或四苯鉮[（C6H5）4As+]与IO4-或TlBr4-形成的离子缔合物作为电活性物质,研制了十二种IO4-和九种TIBr4-的PVC膜电极,测试并比较了它们的性能,着重探讨了碱性染料结构对电极性能的影响及碱性染料的示波极谱还原峰电势和IO4-电极性能的关系.

关键词：电极性能缔合物碱性染料 IO4 PVC

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A quadratic convex framework with bigger freedom for the stability analysis of a cyber-physical microgrid system

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Science China(Information Sciences) 2023年第2期66卷 176-190页

作者： jing he Yan LIANG Xiaohui hao Feisheng YANG Quan PAN School of Automation Northwestern Polytechnical University Key Laboratory of Information Fusion Technology Ministry of Education

Information exchange between a microgrid central controller and local controllers is supported by low-bandwidth communication channels, leading to an inevitable delay with time-varying characteristics that adversely affect the microgrid dynamics and even cause instability. This study addresses the problem of stability analysis for a load frequency control(LFC) microgrid system with the interval time-varying ***, a modeling approach is proposed for the cyber-physical microgrid, in which the physical interconnection between the cyber-physical components is established. Given that a quadratic function is often introduced in stability analysis and the negative determination is crucial to reducing the conservatism, a novel quadratic convex framework with adjustable free parameters that relaxes the quadratic function negative-determination conditions is developed. Next, the delay-dependent stability criterion of the cyber-physical LFC microgrid is obtained on the basis of augmented Lyapunov-Krasovskii functional and Bessel-Legendre inequality together with mixed convex combination techniques. This reduces the conservatism without requiring extra decision variables. Finally, two types of case studies demonstrate the merits of the proposed scheme.

关键词： cyber-physical microgrid load frequency control quadratic convex framework stability analysis

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The synergy reduction and self-assembly of graphene oxide via gamma-ray irradiation in an ethanediamine aqueous solution

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Nuclear Science and Techniques 2016年第3期27卷 80-87页

作者： Ya-Lei he Ji-hao Li Lin-Fan Li jing-Bo Chen jing-Ye Li School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450002China CAS Center for Excellence on TMSR Energy System Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China

Gamma-ray irradiation technique is an effective method for preparing graphene aerogel(GA).The effective reduction and self-assembly of graphene oxide(GO) sheets into 3D porous GA in ethylenediamine(EDA) aqueous solution under the protection of nitrogen have been achieved via γ-ray *** reduction degree and self-assembly process,which can be controlled by varying EDA dose and irradiation dose,are investigated by X-ray photoelectron spectroscopy,Fourier transform infrared spectroscopy,X-ray diffractometer,and thermogravimetric analysis.A reduction mechanism is proposed for interactions among EDA molecules,active radicals from the radiolysis of water,and oxygen-containing groups on GO sheets.

关键词： γ射线照射氧化石墨乙二胺自组装协同还原溶液傅里叶变换红外光谱 X射线光电子能谱

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Effect of Degree-of-Symmetry on Kinetostatic Characteristics of Flexure Mechanisms:A Comparative Case Study

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Chinese Journal of Mechanical Engineering 2018年第2期31卷 54-65页

作者： Xiao-Bing he jing-Jun Yu Wan-Wan Zhang Guang-Bo hao School of Mechanical Engineering and Automation Beihang University School of Engineering-Electrical and Electronic Engineering University College Cork

The current research of kinetostatic characteristics in flexure mechanisms mainly focus on the improvement of accuracy. To reduce or eliminate the parasitic motion is considered as an approach by using the common knowledge of symmetry. However, there is no study on designing the flexure mechanisms with symmetrical features as many as possible for better kinetostatic performance, when considering the resulting cost by the symmetry. In this paper, the concept of degree of symmetry(DoS) is proposed for the first time, which is committed to symmetry design in the phase of conceptual design. A class of flexure mechanisms with 0?DoS, 1?DoS, 2?DoS and 3?DoS are synthesized respectively based on the Freedom and Constraint Topology method. Their overall compliance matrices in an analytical form formulated within the framework of the screw theory are used to analyze and compare the effect of different number of DoS on the kinetostatic characteristics for flexure mechanisms. The finite element analysis(FEA) simulations are implemented to verify the analytical results. These results show that the higher the DoS is, the smaller the parasitic motion error will be. The flexure model with 3?DoS is optimized according to the overall compliance matrix and then tested by using the FEA simulation. The testing result shows that with the best combination parameters, the parasitic motion error for 3?DoS mechanism is almost eliminated. This research introduces a design principle which can alleviate the unwanted parasitic motion for better accuracy.

关键词： Flexure mechanism Symmetry Kinetostatic characteristics FEA simulation

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A catalogue of 74 new open clusters found in Gaia Data-Release 2

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Research in Astronomy and Astrophysics 2021年第4期21卷 216-224页

作者： Zhi-Hong he Ye Xu Chao-Jie hao Zhen-Yu Wu jing-jing Li Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Science and Technology of China Hefei 230026China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

Based on astrometric data from Gaia Data-Release 2(DR2),we employ an unsupervised machine learning method to blindly search for open star clusters in the Milky Way within the Galactic latitude range of|b|he positions,apparent radii,parallaxes,proper motions and member stars of these ***,to obtain the physical parameters of each candidate cluster,stellar isochrones are fit to the photometric *** results show that the apparent radii and the observed proper motion dispersions of these new candidates are consistent with those of open clusters previously identified in Gaia DR2.

关键词： Galaxy:open clusters and associations methods:data analysis surveys

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有机化学实验教学模式探究

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广东化工 2018年第10期45卷 260-260,251页

作者：郭静彭浩何树华张淑琼谢兵蒋勇长江师范学院化学化工学院重庆408102

通过有机化学实验培养学生的科研和创新能力、树立实验室安全、环保意识、提高实验技能是高校有机化学实验课程改革的重点。结合长江师范学院化学化工学院的实际情况,通过对有机化学实验教学内容、教学方法以及考核方式三方面的改革,有... 详细信息

通过有机化学实验培养学生的科研和创新能力、树立实验室安全、环保意识、提高实验技能是高校有机化学实验课程改革的重点。结合长江师范学院化学化工学院的实际情况,通过对有机化学实验教学内容、教学方法以及考核方式三方面的改革,有效的提高了学生对有机化学实验的重视程度、动手能力和独立思考能力,增强了学生的环保意识,提高了教学质量。

关键词：有机化学实验教学改革教学质量

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