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Treatment of hydroxyquinone-containing wastewater using precipitation method with barium salt

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Water Science and Engineering 2019年第1期12卷 55-61页

作者： qun-chao wang Shu-gen Liu Hua-ping Gao School of Environmental Science and Engineering Kunming University of Science and Technology

Hydroxyquinone compounds, such as 1,4-dihydroxyanthraquinone and alizarin sulfonate, are widely used in dye manufacturing, pharmaceutical manufacturing, and other industries. However, the treatment of hydroxyquinone-containing wastewater has seldom been examined. This study used a precipitation method with barium salt to treat nano-silver industrial wastewater. The results show that barium chloride was a suitable reagent for significantly degrading COD and color from nano-silver wastewater. When the initial pH value was 10.5, 8 g of BaCl2·2H2O were added to 100 mL of wastewater. After reaction at 15℃ for 1 h, the removal efficiencies of COD and color in the nano-silver wastewater were 85.6% and 97.1%, respectively. Simulated wastewater containing sodium alizarin-3-sulfonate (ARS) or purpurin was used to further investigate the removal mechanism of hydroxyquinone compounds. Fourier transform infrared spectroscopy, X-ray diffraction, and some related experiments showed that hydroxyquinone compounds can directly react with barium ions in the solution so as to transfer from wastewater to precipitate. In addition, the newly produced barium sulfate particles have positive surface charges, which can improve the removal efficiency of hydroxyquinone compounds due to electrostatic attraction.

关键词： Hydroxyquinone compounds Wastewater Barium salt Precipitation Electrostatic attraction

Benzosuberyl Substituents as a"Sandwich-like"Function in Olefin Polymerization Catalysis

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Chinese Journal of Polymer Science 2021年第8期39卷 984-993,I0006页

作者： Yu-Yin wang chao-qun wang Xiao-Qiang Hu Yan Xia Yue Chi Yi-Xin Zhang Zhong-Bao Jian College of Chemistry and Life Science Advanced Institute of Materials ScienceChangchun University ofTechnologyChangchun 130012China Key Laboratory of Advanced Structural Materials of Ministry of Education College of Material Science and EngineeringChangchun University of TechnologyChangchun 130012China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

For the rational design of metal catalyst in olefin polymerization catalysis,various strategies were applied to suppress the chain transfer by bulking up the axial positions of the metal center,among which the"sandwich"type turned out to be an eficient category in achieving high molecular weight *** the a-dimine system,the"sandwich"type catalysts were built using the typical 8-aryl-naphthyI *** this contribution,by introducing the rotationally restrained benzosuberyl substituent into the ortho-position of N-aryl rings,a new class of "sandwich-like"a-diimine nickel catalysts was constructed and fully *** rotationally restrained benzosuberyl substituents played a"sandwich-like"function by capping the nickel center from two axial *** to the nickel catalyst Ni1 bearing freely rotated benzhydryl substituent,Ni2 featuring benzosubery|substituent enabled the increase(8 times)of polymer molecular weights from 8 kDa to 65 kDa in the polymerization of *** further increasing the steric bulk of another ortho-site of the N-aryl ring,the polymer molecular weight even reached an ultrahigh level of 833 kDa(Mw=1857 kDa)using the optimized ***,these nickel catalysts could also mediate the copolymerization of ethylene with methyl 10-undecenoate,with Ni3 giving the highest copolymer molecular weight(88 kDa)and the highest incorporation of comonmer(2.0 mol1%),along with high activity of up to 10^(5)g·mol^(-1)·h^(-1).

关键词： Olefin polymerization Benzosuberyl substituent Sandwich Nickel catalyst Polar monomer

Air-core characteristics in a swirling tunnel flow

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Journal of Hydrodynamics 2022年第4期34卷 634-646页

作者： Jun-hu Nan Huan Gao chao-qun wang Kang-ning Ma James Yang Jia-fang Wei Guo-dong Li State Key Laboratory of Eco-hydraulics in Northwest Arid Region Xi'an University of TechnologyXi'an 710048China College of Energy and Power Engineering Lanzhou University of TechnologyLanzhou 730050China Department of Civil and Architectural Engineering Royal Institute of Technology(KTH)StockholmSweden

A cost-effective technique to dissipate the energy in hydropower systems is the formation of a swirling flow within a *** such flows,an air core with a significant cross section usually *** reveal the air-core features in the horizontal tunnel of a high-head shaft spillway,laboratory tests,numerical modeling,and prototype observations are performed,to examine issues such as the formation of the air core,the interjacent air motion,the air-carrying capacity,and the scale *** is shown that the shape of the air core varies greatly in the axial and radial directions along the tunnel and that the center of the core deviates from the axis of the *** motion of the air within the core is caused by the combined action of the water entrainment on the inner surface of the swirling flow and the axial pressure difference in the air *** aeration process can be divided into five processes with respect to the changes of the gate openings.A theoretical expression is established for the air-carrying capacity of the swirling *** vacuum degree is the similarity condition of the air-carrying capacity of the swirling flow between the model and prototype tests based on the Froude law of the similitude,and this similarity condition is verified by both the model and prototype *** work provides a reference for the application of the swirling flows in horizontal hydropower tunnels.

关键词： Horizontal tunnel swirlingflow air core air-carrying capacity scale effect

Freestanding MoSe_(2)nanoflowers for superior Li/Na storage properties

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Tungsten 2024年第1期6卷 238-247页

作者： Qiao Cu chao-qun Shang Guo-Fu Zhou Xin wang Guangdong Provincial Key Laboratory of Optical Information Materials South China Normal UniversityGuangzhou 510006China School of Materials Science and Engineering and Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of TechnologyWuhan 430205China International Academy of Optoelectronics at Zhaoqing South China Normal UniversityZhaoqing 526060China

MoSe_(2),with high theoretical specific capacity,has attracted a lot of *** remains an open challenge to effectively suppress the irreversible selenium dissolution and rapid capacity decrease induced by severe volume change during ***,we synthesize MoSe_(2)nanoflowers dispersed on one-dimensional(1D)N-doped carbon nanofibers(MoSe_(2)@NCNFs)for use as a freestanding *** this unique structure,the 1D N-doped carbon nanofibers are found to not only enhance the conductivity but also ensure the structural integrity during the Li^(+)/Na^(+)insertion/destraction *** expected,at 2 A·g^(-1),the specific capacity of the MoSe_(2)@NCNFs is maintained at 180 mAh·g^(-1)after 500 cycles when used in lithium storage ***,in the case of sodium storage,at 1 A·g^(-1),the MoSe_(2)@NCNFs shows a capacity of 122mAh·g^(-1)after 500 *** findings suggest that the MoSe_(2)@NCNF electrodes may be a promising candidate for use in reversible Li/Na storage applications.

关键词： Li/Na storage Freestanding electrode MoSe_(2) Electrochemical reaction kinetics Structural integrity

Macrophage-secreted exosomes inhibit breast cancer cell migration via the miR-101-3p/DLG5 axis

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Asian Pacific Journal of Tropical Biomedicine 2023年第12期13卷 532-538页

作者： Yu Liu chao-qun wang Yong-Kang Zhu Jia-Fang Xu Si-Qi Yin Qing-Jie Hu Rui-Qi Yang First Clinical Medical College Nanjing University of Chinese MedicineNanjing 210001China Department of Breast Surgery The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102China Department of Nuclear Medicine Hainan General HospitalHainan Affiliated Hospital of Hainan Medical UniversityHaikou 570311China Reproductive Medicine Center The First Affiliated Hospital of Hainan Medical UniversityHaikou 570102China

Objective:To investigate the role of macrophages in regulating breast cancer cell migration and its related ***:Human leukemia monocytic cell line THP-1-secreted exosomes were isolated using multi-step ultracentrifugation and verified using nanoparticle tracking *** expressed miRNAs were identified using RNA *** of inhibitors of hsa-miR-101-3p in breast cancer MDA-MB-231 cells was performed by infecting their lentiviral *** luciferase reporter assay was used to evaluate the interaction of DLG5 and ***5 expression was detected using qRT-PCR and Western blot ***:The migration of breast cancer cells was significantly inhibited after addition of *** sequencing results showed that miR-101-3p expression was significantly *** analysis predicted that miR-101-3p could target DLG5,and this prediction was verified using the luciferase *** addition of the miR-101-3p precursor significantly increased the expression of miR-101-3p,and the mRNA and protein levels of DLG5 were *** contrast,inhibiting the expression of miR-101-3p increased the mRNA and protein levels of ***,the scratch assay showed that inhibiting miR-101-3p could promote the migration of MDA-MB-231 ***:Macrophage exosomes can inhibit the migration of breast cancer cells,and increasing the expression of miR-101-3p to inhibit DLG5 expression may play an important role in this process,which needs further investigation.

关键词： Micro-RNA Tumor-associated macrophages Exosomes Breast cancer DLG5

Apelin-13 as a novel target for intervention in secondary injury after traumatic brain injury

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Neural Regeneration Research 2016年第7期11卷 1128-1133页

作者： Hai-jun Bao Hai-yang Qiu Jin-xia Kuai Cheng-jie Song Shao-xian wang chao-qun wang Hua-bin Peng Wen-can Han Yong-ping Wu Department of Pathology Xuzhou Medical College Department of Forensic Medicine Xuzhou Medical College Department of Physiology Xuzhou Medical College

The adipocytokine,apelin-13,is an abundantly expressed peptide in the nervous ***-13 protects the brain against ischemia/reperfusion injury and attenuates traumatic brain injury by suppressing ***,secondary apelin-13 effects on traumatic brain injury-induced neural cell death and blood-brain barrier integrity are still not ***,we found that apelin-13 significantly decreases cerebral water content,mitigates blood-brain barrier destruction,reduces aquaporin-4 expression,diminishes caspase-3 and Bax expression in the cerebral cortex and hippocampus,and reduces *** results show that apelin-13 attenuates secondary injury after traumatic brain injury and exerts a neuroprotective effect.

关键词： traumatic hippocampus cortex suppressing caspase minutes autophagy destruction hemisphere edema

Erosive Pustular Dermatosis of the Scalp After Excision and Skin Grafting of Scalp Squamous Cell Carcinoma

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International Journal of Dermatology and Venereology 2021年第1期4卷 50-52页

作者： Xun He chao-qun wang Wei Lu Yu-Gang Gong Xiao-Wei Sha Zhu Shen Department of Dermatology Sichuan Provincial People’s HospitalChengduSichuan 610071China

Introduction:Erosive pustular dermatosis of the scalp(EPDS)is an uncommon condition with unknown *** clinical exclusive diagnosis needs to be differentiated from similar *** presentation:A 68-year-old woman presented with an eight-month history of a chronic scalp *** had been diagnosed as squamous cell carcinoma by biopsy nine months ago,and had been treated by surgical excision and skin *** month later,she was referred for evaluation of the newly enlarged lesion which was observed at the skin grafting *** was diagnosed of EPDS based on characteristics of lesions,clinicopathological findings and laboratory *** condition had clinically improved with systemic steroid therapy and topical tacrolimus for two *** occurred after complete withdrawal of both *** repeating the above therapy and applying topical tacrolimus as maintenance therapy,the condition was well controlled at the one-year ***:EPDS is an uncommon inflammatory dermatosis with main incidence rate of elderly patients and female *** diagnosis of EPDS cant be made only by histopathological examination,which is helpful for differential *** investigations commonly remain *** the high risk of relapse,it is important for clinicians to be aware of maintenance treatment and a long-term ***:It should be recognized by clinicians that EPDS is an uncommon and relapse disease,leading to serious cosmetic *** treatment lacks evidence-based medicine data,clinician should choose the appropriate therapy according to the condition of patients.

关键词： case report erosive pustular dermatosis squamous cell carcinoma surgical excision skin graft

Manipulating the Macroscopic and Microscopic Morphology of Large-Area Gravure-Printed ZnO Films for High-Performance Flexible Organic Solar Cells

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Energy & Environmental Materials 2024年第2期7卷 233-243页

作者： Zhenguo wang Jingbo Guo Yaqin Pan Jin Fang chao Gong Lixin Mo qun Luo Jian Lin Changqi Ma School of Nano-Tech and Nano-Bionics University of Science and Technology of China i-Lab & Printable Electronics Research Center Suzhou Institute of NanoTech and Nano-Bionics Chinese Academy of Sciences (CAS) Beijing Engineering Research Center of Printed Electronics Beijing Institute of Graphic Communication Jiangxi Institute of Nanotechnology Chinese Academy of Sciences (CAS)

Gravure printing is a promising large-scale fabrication method for flexible organic solar cells（FOSCs） because it is compatible with two-dimension patternable roll-to-roll fabrication. However, the unsuitable rheological property of Zn O nanoinks resulted in unevenness and looseness of the gravure-printed Zn O interfacial layer. Here we propose a strategy to manipulate the macroscopic and microscopic of the gravure-printed Zn O films through using mixed solvent and poly（vinylpyrrolidone）(PVP) *** regulation of drying speed effectively manipulates the droplets fusion and leveling process and eliminates the printing ribbing structure in the macroscopic morphology. The additive of PVP effectively regulates the rheological property and improves the microscopic compactness of the *** this method, large-area Zn O:PVP films（28 × 9 cm2） with excellent uniformity, compactness, conductivity, and bending durability were fabricated. The power conversion efficiencies of FOSCs with gravure-printed Ag NWs and Zn O:PVP films reached 14.34% and 17.07% for the 1 cm2PM6:Y6 and PM6:L8-BO flexible devices. The efficiency of 17.07% is the highest value to date for the 1 cm2FOSCs. The use of mixed solvent and PVP addition also significantly enlarged the printing window of Zn O ink, ensuring high-quality printed thin films with thicknesses varying from 30 to 100 nm.

关键词： flexible organic solar cell gravure printing large-area flexible interfacial layer rheology properties zinc oxide

Polyelectrolytes of Inorganic Polyoxometalates:Prospecting New Charged Polymers for Advanced Applications

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Chinese Journal of Polymer Science 2024年第9期42卷 1254-1269,I0005页

作者： De-Yin wang Zhuo-qun Lu Wei wang College of Medical Linyi UniversityLinyi276000China Center for Synthetic Soft Materials Key Laboratory of Functional Polymer Materials of the Ministry of EducationInstitute of Polymer ChemistryNankai UniversityTianjin300071China

Polyelectrolytes are charged polymers comprising macromolecules in which substantial portions of the constituent units contain cationic(e.g.,pyridinium,ammonium)or anionic(e.g.,sulfonate,carboxylate)groups,which possess special functions from the features of counterions,such as dissociation to charged species,mechanical stability,phase behavior,***,functional polyelectrolytes have been widely applied in many *** this perspective,we present some progresses in the studies of poly(polyoxometalate)s,denoted as poly(POM)s,as a kind of new charged polymers/polyelectrolytes,by covalent bonding between the inorganic polyoxometalate(POM)clusters and the organic polymer *** to the distinct positions of POMs in polymer chain and functions of poly(POM)s,they are divided into the following four categories:crosslinked poly(POM);side-chain poly(POM);backbone poly(POM),including poly(POM)-conjugated polymer hybrid and block poly(POM)-polymer;and POM-based covalent organic framework(PCOF).This perspective introduces the synthesis methods of poly(POM)polyelectrolytes and their macromolecular and aggregate structural characteristics,while also focusing on their properties and *** application areas include catalysis,thermal resistance,optical functions,fuel cells and batteries,etc.

关键词： Charged polymer Polyelectrolyte Polyoxometalate Poly(polyoxometalate) Covalent organic framework