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Effects of operating conditions on iron(hydr)oxides evolution and ciprofloxacin degradation in potassium ferrate-ozone stepwise oxidation system

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Journal of Environmental Sciences 2024年第1期135卷 367-378页

作者： Xiaochen li Yifan Wang Ning Wang mei li Maomao Bai Jingtao Xu Hongbo Wang School of Municipal and Environmental Engineering Shandong Jianzhu UniversityJinan 250101China resources and Environment Innovation Institute Shandong Jianzhu UniversityJinan 250101China

In this study,a stepwise oxidation system of potassium ferrate(K_(2)FeO_(4))combined with ozone(O+3)was used to degrade ciprofloxacin(CIp).The effects of pH and pre-oxidation time of K_(2)FeO_(4) on the evolution of K_(2)FeO_(4) reduction products(iron(hydr)oxides)and CIp degradation were *** was found that in addition to its own oxidation capacity,K_(2)FeO_(4) can also influence the treatment effect of CIp by changing the catalyst *** presence of iron(hydr)oxides effectively enhanced the mineralization rate of CIp by catalyzing *** pH value can influence the content and types of the components with catalytic ozonation effect in iron(hydr)*** K_(2)FeO_(4) pre-oxidation stage can produce more iron(hydr)oxides with catalytic components for subsequent ozonation,but the evolution of iron(hydr)oxides components was influenced by O_(3) *** can also avoid the waste of oxidation capacity owing to the oxidation of iron(hydr)oxides by O_(3) and free *** intermediate degradation products were identified by Fourier transform ion cyclotron resonance mass spectrometry(FT-ICr-MS).Besides,the degradation pathways were *** the degradation products of CIp,the product with broken quinolone ring structure only appeared in the stepwise oxidation system.

关键词： potassium ferrate reduction products Catalytic ozonation Ciprofloxacin potassium ferrate pre-oxidation time

Acupotomy alleviates knee osteoarthritis in rabbit by regulating chondrocyte mitophagy via pink1-parkin pathway

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Journal of Traditional Chinese Medicine 2024年第3期44卷 468-477页

作者： zhu Wenting GUO Changqing DU mei MA Yunxuan CUI Yongqi CHEN Xilin GUO Changqing the Third Affiliated Hospital of Beijing university of Chinese Medicine Beijing 100029China School of Acupuncture-Moxibustion and Tuina Beijing University of Chinese MedicineBeijing 100029China department of Medical Technology Shijiazhuang Medical CollegeHebei 050599China

OBJECTIVE:To investigate the effect of acupotomy,on mitophagy and the pink1-parkin pathway in chondrocytes from rabbits with knee osteoarthritis(KOA).METHODS:A KOA model was established via the modified Videman *** were randomly divided into a control group(CON),KOA group and KOA+acupotomy group(Acu).rabbits in the acupotomy group were subjected to acupotomy for 4 weeks after model *** behavior of the rabbits before and after intervention was *** degeneration was evaluated by optical microscopy and fluorescence *** level of mitophagy was evaluated by transmission electron microscopy,immunofluorescence and enzyme-linked immunosorbent assay(EliSA).The expression of phosphatase and tensin homolog(pTEN)-induced kinase 1(pink1)-parkin mitophagy pathway components was evaluated by immunofluorescence,Western blotting and real-time polymerase chain ***:In rabbits with KOA,joint pain,mobility disorders and cartilage degeneration were observed,the Mankin score was increased,collagen typeⅡ(Col-Ⅱ)expression was significantly decreased,mitophagy was inhibited,mitochondrial function was impaired,and factors associated with the pink1-parkin pathway were *** regulated the expression of pink1-parkin pathway-related proteins,the mitophagy-related protein microtubule-associated protein-1 light chain-3,the translocase of the outer membrane,and the inner mitochondrial membrane 23;increased the colocalization of mitochondria and autophagosomes;promoted the removal of damaged mitochondria;restored mitochondrial adenosine-triphosphate(ATp)production;and alleviated cartilage degeneration in rabbits with ***:Acupotomy played a role in alleviating KOA in rabbits by activating mitophagy in chondrocytes via the regulation of proteins that are related to the pink1-parkin pathway.

关键词： acupuncture therapy osteoarthritis knee mitophagy pTEN phosphohydrolase cartilage

Sodium Sulfite as a Novel Hypoxia revulsant Involved in Hypoxic regulation in Escherichia coli

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Biomedical and Environmental Sciences 2024年第2期37卷 228-232页

作者： YE Qiao HUO Jia Nan LUO Yuan mei zhu Song FANG Long mei GUO Bing Qian WANG Guang Yun Laboratory of clinical medicine Air Force Medical CenterAir Force Medical UniversityBeijing 100142China

As a reducing salt,sodium sulfite could deprive oxygen in solution,which could mimic hypoxic stress in Caenorhabditis *** this study,the wildtype Escherichia coli strain MG1655 was used to examine the inhibition of so... 详细信息

关键词： hypoxic Sodium observing

robust Correlation Clustering problem with Locally Bounded Disagreements

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Tsinghua Science and Technology 2024年第1期29卷 66-75页

作者： Sai Ji Min li mei liang Zhenning Zhang Institute of Mathematics Hebei University of TechnologyTianjin 300401China School of Mathematics and Statistics Shandong Normal UniversityJinan 250358China College of Statistics and Data Science Beijing University of TechnologyBeijing 100124China department of Operations research and Information Engineering Beijing University of TechnologyBeijing 100124China

Min-max disagreements are an important generalization of the correlation clustering problem(CorCp).It can be defined as *** a marked complete graph G=(V,E),each edge in the graph is marked by a positive label"+"or a negative label"_"based on the similarity of the connected *** goal is to find a clustering C of vertices V,so as to minimize the number of disagreements at the vertex with the most ***,the disagreements are the positive cut edges and the negative non-cut edges produced by clustering *** paper considers two robust min-max disagreements:min-max disagreements with outliers and min-max disagreements with *** parameter δ∈(0,1/14),we first provide a threshold-based iterative clustering algorithm based on Lp-rounding technique,which is a(1/δ,7/(1-14δ))-bi-criteria approximation algorithm for both the min-max disagreements with outliers and the min-max disagreements with outliers on one-sided complete bipartite ***,we verify that the above algorithm can achieve an approximation ratio of 21 for min-max disagreements with penalties when we set parameter δ=1/21.

关键词： min-max disagreements outliers penalties approximation algorithm Lp-rounding

ON THE CrITErIA AND ENUMErATION OFBOOLEAN FUNCTIONS USEDIN STrEAM CIpHErS

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Systems Science and Mathematical Sciences 1997年第4期10卷 309-314页

作者： WANG Jianyu(department of Mathematics, nankai university, tianjin 300071, china) 南开大学数学系天津

In this paper, we discuss the criteria of boolean functions used in streamciphers, and enumerate boolean functions which satisfy some criteria.

关键词： Stream ciphers boolean functions balance linear structure functions.

palladium-catalyzed S_(N)2 glycosylation of phenols

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Science china chemistry 2024年第4期67卷 1037-1038页

作者： Yu zhu p.Andrew Evans department of chemistry Queen’s University90 Bader LaneKingstonK7L 3N6Canada Xiangya School of pharmaceutical Sciences Central South UniversityChangsha 410013China

Glycosides are essential structural motifs present in an array of important medicines,materials,and natural products[1].Nevertheless,the chemo-and stereoselective construction of the glycosidic linkage is a long-standing challenge because relatively minor variations in the glycosyl donor or acceptor’s structure can impact stereoselectivity,thus influencing the product's functional properties.

关键词： properties palladium catalyzed

Synthesis of ZSM-35 Using Hexamethyleneimine as a Template

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Chinese Chemical Letters 1997年第9期8卷 833-836页

作者： Zhong Yong YUAN Huai Bin ZHANG Jing Zhong WANG He Xuan li(Catalysis Laboratory, department of chemistry, nankai university, tianjin 300071) Catalysis Laboratory Department of Chemistry Nankai University Tianjin 300071 China

Zeolite ZSM-35 was synthesized using hexamethyleneimine as an organic template and its crystallographic structure was studied by X-ray diffraction and Ir spectroscopy. Its adsorption property was also evaluated.

关键词： Synthesis of ZSM-35 Using Hexamethyleneimine as a Template

Some Notes on the Adams Spectral Sequence

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Acta Mathematica Sinica,English Series 1994年第1期10卷 4-10页

作者： Wang Xiangjun department of Mathematics nankai university tianjin,300071 Clfina department of Mathematics Nankai University Tianjin China

In the beginning of 1980’s Cohen,*** that hob（1k）=B（1,k） ζ1 survives to E∞ in the Adams spectral ***,Cohen,*** Goerss,*** that hohj=ζ1pj ζ1 is a permanent *** they are represented byζk,ηj *** the author pro... 详细信息

In the beginning of 1980’s Cohen,*** that hob（1k）=B（1,k） ζ1 survives to E∞ in the Adams spectral ***,Cohen,*** Goerss,*** that hohj=ζ1p>pp>jp>p> ζ1 is a permanent *** they are represented byζk,ηj *** the author proved: Theorem 2:Let 2≤s≤p-1,j≥3,thenβsηj≠0. Theorem 3:For 2≤s≤p-1,k≥2,βsζk≠0 in the stable homotopy groups of spheres. As a remark,we get βsβ(（pp>kp>）/(pp>k-1p>)≠0 in ExtBp*,Bpp>*,*p>（Bp*,Bp*）.

关键词： Some Notes on the Adams Spectral Sequence Math

A　NEW　AppliCATION　OF　HYDrIZIrCONOCENE　CHLOrIDE，　CrOSS　COUpliNG　OF　ALKENYL　STANNANE　WITH　ALLYL　BrOMIDE

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Chinese Chemical Letters 1995年第10期6卷 871-872页

作者： Ji Tao WANG Yu Ming XU Hai Jun HAO(department of chemistry, nankai university,tianjin,300071) nankai Univ Dept Chem Tianjin 300071 Peoples R China

Alkenyl stannane after hydrozirconation, coupled withallyl bromide using CuCN as catalyst producinq allyl homologatedstannane.

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