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Photodegradation of Orange Ⅱ using waste paper sludge-derived heterogeneous catalyst in the presence of oxalate under ultraviolet light emitting diode irradiation

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Journal of Environmental Sciences 2016年第9期28卷 63-70页

作者： guoqiang zhou Jinyi Guo Guowang zhou Xiankai Wan Huixiang Shi Department of Environmental Engineering Zhejiang University

A waste paper sludge-derived heterogeneous catalyst（WPS-Fe-350） was synthesized via a facile method and successfully applied for the degradation of Orange Ⅱ in the presence of oxalic acid under the illumination of ultraviolet light emitting diode（UV-LED） Powder X-ray diffraction,Fourier-transform infrared spectroscopy,scanning electronic microscopy and N2 sorption isotherm analysis indicated the formation of α-Fe2O3 in the mesoporous *** degradation test showed that WPS-Fe-350 exhibited rapid Orange Ⅱ（OⅡ） degradation and mineralization in the presence of oxalic acid under the illumination of *** effects of p H,oxalic acid concentration and dosage of the catalyst on the degradation of OⅡ were evaluated,*** the optimal conditions（1 g/L catalyst dosage,2 mmol/L oxalic acid and p H 3.0）,the degradation percentage for a solution containing 30 mg/L OⅡ reached 83.4% under illumination by UV-LED for 80 ***,five cyclic tests for OⅡ degradation suggested that WPS-Fe-350 exhibited excellent stability of catalytic ***,this study provides an alternative environmentally friendly way to reuse waste paper sludge and an effective and economically viable method for degradation of azo dyes and other refractory organic pollutants in water.

关键词： Heterogeneous catalyst Waste paper sludge Oxalic acid Orange Ⅱ

Fenton-like degradation of Methylene Blue using paper mill sludge-derived magnetically separable heterogeneous catalyst:Characterization and mechanism

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Journal of Environmental Sciences 2015年第9期27卷 20-26页

作者： guoqiang zhou Ziwen Chen Fei Fang Yuefeng He Haili Sun Huixiang Shi Department of Environmental Engineering Zhejiang University

For the paper industry, the disposal and management of the yielded sludge are a considerable challenge. In our work, the paper mill sludge-derived magnetically separable heterogeneous catalyst（PMS-Fe-380） was prepared easily through a facile synthesis method. The morphology and structure of PMS-Fe-380 were fully characterized by means of X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Brunauer–Emmet–Teller analysis. The catalytic activity of PMS-Fe-380 was evaluated by degradation of Methylene Blue（MB）. The reusability and stability of PMS-Fe-380 were evaluated in five repeated runs, which suggested that PMS-Fe-380 manifested excellent stability of catalytic activity. Moreover,leaching tests indicated that the leached iron is negligible（〈0.5 mg/L）. This study provides an alternative environmentally friendly reuse method for paper mill sludge and a novel catalyst PMS-Fe-380 that can be considered as a promising heterogeneous Fenton-like catalyst.

关键词： Paper mill sludge Heterogeneous catalyst Methylene Blue

IDL: Evaluating software quality based on PageRank algorithm

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The Journal of China Universities of Posts and Telecommunications 2020年第1期27卷 10-25页

作者： zhou guoqiang Fan Yi Zhang Shuai Wang Yilun Li Peng Dai Guilan School of Computer Science Nanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023China Southwest China Institute of Electronic Technology Chengdu 610036China Institute of Information Technology Tsinghua UniversityBeijing 100084China

In the traditional method, the software quality is measured by various metrics of the software, such as decoupling level(DL), which can be used to predict software defect. However, DL, which treats all the files equally, has not taken file importance into consideration. Therefore, a novel software quality metric, named as improved decoupling level(IDL), based on the importance of documents was proposed. First, the PageRank algorithm was used to calculate the importance of files to obtain the weights of the dependencies, and then defect prediction models was established by combining the software scale, dependencies, scores and software defects to assess the software quality. Compared to most existing module-based software quality evaluation methods, IDL has similar or even superior performance in the prediction of software quality. The results indicate that IDL measures the importance of each file in the software more accurately by combining the PageRank algorithm in DL, which indirectly reflects the quality of software by predicting the bug information in software and improves the accuracy of prediction result of software bug information.

关键词： decoupling level(DL) PageRank improved decoupling level(IDL) software architecture software matrix software quality

Lanthanum promoting bone formation by regulating osteogenesis,osteoclastogenesis and angiogenesis

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Journal of Rare Earths 2024年第3期42卷 621-628,I0007页

作者： Dandan Zou Runlian Lin Yu Han Juan Jia guoqiang zhou Haisong Zhang Kun Ge Hebei Key Laboratory of Chronic Kidney Diseases and Bone Metabolism Affiliated Hospital of Hebei UniversityBaoding071000China Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education Key Laboratory of Chemical Biology of Hebei ProvinceCollege of Chemistry and Environmental ScienceHebei UniversityBaoding071002China

With lanthanum(La) in agriculture, medicine, and the chemical industry, La shows accumulation in the body, especially in the bone, because of its similar structure to calcium. Moreover, La has a direct role in bone formation regulating osteoblasts and osteoclasts. Nevertheless, bone formation is complex under the regulation of osteogenesis, osteoclastogenesis, and angiogenesis in the bone microenvironment. It is difficult to comprehensively understand the regulation of bone homeostasis from a single kind of ***, some bone microenvironment-related cells and mouse calvaria culture models were used to study the regulatory effect of La-based compound-lanthanum nitrate(La(NO_(3))_(3)) on bone ***(NO_(3))_(3) has good biological safety, and the osteogenic differentiation is significantly increased under La(NO_(3))_(3) treatment for bone marrow mesenchymal stem cells(BMMSC). In contrast, the differentiation,maturation, and bone erosion ability of osteoclasts are significantly decreased. Meanwhile, the angiogenesis ability of human umbilical vein endothelial cells(HUVEC) is significantly promoted when treated with La(NO_(3))_(3). Furthermore, bone metabolism and angiogenesis are improved under La(NO_(3))_(3) treatment in the calvaria ex vivo culture model and BMMSC-HUVEC co-culture system. These results suggest that La has the beneficial effect of promoting bone metabolism and improving bone formation in the bone microenvironment.

关键词： Lanthanum Bone microenvironment Osteogenic differentiation Angiogenesis Rare earths

Global Quantitative Proteomics Analysis Reveals the Downstream Signaling Networks of Msx1 and Msx2 in Myoblast Differentiation

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Phenomics 2022年第3期2卷 201-210页

作者： guoqiang zhou Shuangping Ma Ming Yang Yenan Yang State Key Laboratory of Genetic Engineering School of Life SciencesFudan UniversityShanghai 200438China

The msh homeobox 1(Msx1)and msh homeobox 2(Msx2)coordinate in myoblast differentiation and also contribute to muscle defects if altered during *** the downstream signaling networks of Msx1 and Msx2 in myoblast differentiation will help us to understand the molecular events that contribute to muscle ***,the proteomics characteristics in Msx1-and Msx2-mediated myoblast differentiation was evaluated using isobaric tags for the relative and absolute quantification labeling technique(iTRAQ).The downstream regulatory proteins of Msx1-and Msx2-mediated differentiation were *** analysis revealed that these proteins were primarily associated with xenobiotic metabolism by cytochrome P450,fatty acid degradation,glycolysis/gluconeogenesis,arginine and proline metabolism,and *** addition,our data show Acta1 was probably a core of the downstream regulatory networks of Msx1 and Msx2 in myoblast differentiation.

关键词： Quantitative proteomics Msx1 Msx2 Myoblast differentiation

C60(OH)n-loaded nanofibrous membranes protect HaCaT cells from ROS-associated damage

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Chinese Chemical Letters 2017年第9期28卷 1889-1892页

作者： Mengyu Guo Shuying Bi Jing Liu Wenshi Xu guoqiang zhou Ying Liu Chunying Chen CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China Chinese PLA Air Force General Hospital. Beijing 100142 China Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education College of Chemistry and Environmental Science Hebei University.Baoding 071002. China

Environmental stress factors could lead to the excess generation of reactive oxygen species（ROS） that induces various forms of skin damage related to oxidative stress. Polyhydroxylated fullerene derivative C（60）（OH）n, acting as an effective agent for prevention of skin aging, is widely used in the lotion and sunscreens in the field of cosmetics, but rarely used in the masks. In this study, we prepared C（60）（OH）n loaded nanofibrous membranes to protect human keratinocyte cells from ROS-associated damage and suppress the elevation of intracellular ROS and Ca（2＋） along with the apoptotic cell death. Two FDAapproved biodegradable polymers, PLGA and PCL, have been used for making the electrospun nanofibers,with C（60）（OH）n added to the polymers as an antioxidant. The nanofibrous membranes with good biocompatibility might be potentially applied in clinical practice to reduce skin aging.

关键词： C60(OH)n Electrospining Nanofibrous membranes ROSSkin damage

基于数字孪生的海上油田超役钻机井架评估方法

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石油工程建设 2025年第1期51卷 26-30,53页

作者：杨向前郭华刘磊闫天红周国强中海石油(中国)有限公司北京研究中心北京100028 东北石油大学黑龙江大庆163318

我国诸多海上油田钻机井架已超过设计使用年限,但油田可采油气资源仍然可观,为了满足超役井架延寿及油气钻探安全生产的需求,介绍了超役钻机井架体征状态与性能状态相结合的综合检测技术,提出了钻机井架体征与性态感知的数字孪生评估方... 详细信息

我国诸多海上油田钻机井架已超过设计使用年限,但油田可采油气资源仍然可观,为了满足超役井架延寿及油气钻探安全生产的需求,介绍了超役钻机井架体征状态与性能状态相结合的综合检测技术,提出了钻机井架体征与性态感知的数字孪生评估方法。以某海上油田钻机井架为例,通过井架结构动态特性与承载应力测试,应用模型修正数字孪生技术,进行井架延寿安全评估。其研究结果可为海上油田超役钻机井架延寿安全服役提供数据支撑。

关键词：海上超役钻机井架检测技术数字孪生安全评估

Grounded-source short offset transient electromagnetic method:Theory and applications in deep mineral exploration

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Science China Earth Sciences 2025年第2期68卷 626-638页

作者： guoqiang XUE Xin WU Weiying CHEN Nannan zhou Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

The Transient Electromagnetic(TEM)method is a critical geophysical technique for subsurface exploration of metal ore bodies,primarily utilizing either loop or grounded *** Long Offset Transient Electromagnetic(LOTEM)method employs a grounded-source transmitter,relying on a far-source observation mode and plane wave approximation for ***,LOTEM's far-source configuration weakens signal strength,and the plane wave approximation reduces precision,limiting effective detection depth to approximately 1000 m with a comprehensive error of about 15%.Recently,we have developed the grounded-source Short Offset Transient Electromagnetic(SOTEM)method,achieving greater detection depth and accuracy within the 500–2000 m depth range,a crucial interval for mineral resource *** study explores the theoretical framework,instrumentation,data processing,and field applications of *** on a point charge element model,SOTEM accurately computes surface wave effects in EM field calculations,optimized for near-source ***-power,high-resolution,wide-bandwidth exploration equipment and an advanced three-dimensional hybrid inversion technique were also developed to enhance the method's *** of SOTEM to the deep exploration of the zhou'an Ni-Cu-PGE deposit in Henan Province yielded high-resolution imaging of conductivity structures to about 2.5 km *** results,consistent with existing drill data,delineated mineralized ore bodies from surrounding formations,identified zones of mineralization potential,and suggested extensive resource prospects in the region.

关键词： Far-source observation Plane wave model approximation Grounded-source short-offset transient electromagnetic method Wide-bandwidth exploration equipment Three-dimensional hybrid inversion

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Research Progress of Trust Evaluation Model

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Wuhan University Journal of Natural Sciences 2008年第4期13卷 391-395页

作者： zhou guoqiang PAN Fangrui ZHANG Weifeng GUO Jian Department of Computer Science and Technology Nanjing University/State Key Laboratory of Novel Software TechnologyNanjing 210093 Jiangsu China College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 Jiangsu China

Software systems in distributed environment are changing from a close and relatively static form, whose users are familiar with each other, to an open and highly dynamic mode, which can be visited by public. In such circumstance, trust evaluation model becomes focus of intense research at current time. Trust evaluation model establishes a management framework of trust relationship between entities, involving expression and measurement of trust, comprehensive calculation of direct trust value and recommended trust value, and recognition of malicious entities and recommendations. Based on the analysis of several typical trust evaluation models, the classification of trust evaluation ideas and modes is discussed, the questions existing in current research and the directions of future research are pointed out.

关键词： distributed environment trust trust evaluation model trust path