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Preparation and characterization of boron-doped corn straw biochar: Fe(Ⅱ) removal equilibrium and kinetics

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Journal of Environmental Sciences 2021年第8期33卷 116-123页

作者： Long Sui Chunyu Tang Qing Du ying zhao Kui Cheng Fan Yang Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces(NEAU-MPICI) Harbin 150030 School of Water Conservancy and Civil Engineering Northeast Agricultural UniversityHarbin 150030China College of Engineering Northeast Agricultural UniversityHarbin 150030China

Nowadays,iron ions as a ubiquitous heavy metal pollutant are gradually concerned and the convenient and quick removal of excessive iron ions in groundwater has become a major challenge for the safety of drinking *** this study,boron-doped biochar(B-BC)was successfully prepared at various preparation conditions with the addition of boric *** as-prepared material has a more developed pore structure and a larger specific surface area(up to 897.97 m2/g).A series of characterization results shows that boric acid effectively activates biochar,and boron atoms are successfully doped on *** with the ratio of raw materials,the pyrolysis temperature has a greater influence on the amount of boron *** on Langmuir model,the maximum adsorption capacity of 800 B-BC1:2 at25℃,40℃,55℃ are 50.02 mg/g,95.09 mg/g,132.78 mg/g,***-second-order kinetic model can better describe the adsorption process,the adsorption process is mainly chemical *** complexation,ions exchange,and co-precipitation may be the main mechanisms for Fe2+removal.

关键词： Boron-doped biochar Pyrolysis temperature Iron ions Removal mechanisms

Fooling intrusion detection systems using adversarially autoencoder

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Digital Communications and Networks 2021年第3期7卷 453-460页

作者： Junjun Chen Di Wu ying zhao Nabin Sharma Michael Blumenstein Shui Yu College of Information Science and Technology Beijing University of Chemical TechnologyBeijing100029China School of Computer Science University of Technology SydneyUltimo2007Australia Centre for Artificial Intelligence University of Technology SydneyUltimo2007Australia

Due to the increasing cyber-attacks,various Intrusion Detection Systems(IDSs)have been proposed to identify network *** existing machine learning-based IDSs learn patterns from the features extracted from network traffic flows,and the deep learning-based approaches can learn data distribution features from the raw data to differentiate normal and anomalous network *** having been used in the real world widely,the above methods are vulnerable to some types of *** this paper,we propose a novel attack framework,Anti-Intrusion Detection AutoEncoder(AIDAE),to generate features to disable the *** the proposed framework,an encoder transforms features into a latent space,and multiple decoders reconstruct the continuous and discrete features,***,a generative adversarial network is used to learn the flexible prior distribution of the latent *** correlation between continuous and discrete features can be kept by using the proposed training *** conducted on NSL-KDD,UNSW-NB15,and CICIDS2017 datasets show that the generated features indeed degrade the detection performance of existing IDSs dramatically.

关键词： Intrusion detection Cyber attacks Autoencoder Generative adversarial networks

A fluorescent aptasensing strategy for adenosine triphosphate detection using tris(bipyridine)ruthenium(Ⅱ) complex containing six cyclodextrin units

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Chinese Chemical Letters 2017年第3期28卷 619-624页

作者： Xin Nie Xin Ning ying-ying zhao Li-Zhu Yang Fan Zhang Pin-Gang He School of Chemistry and Molecular Engineering East China Normal University School of Pharmaceutical Sciences Wenzhou Medical University

A sensitive label-free fluorescent aptasensing strategy for the detection of adenosine triphosphate（ATP）has been developed with a metallocyclodextrin, tris（bipyridine）ruthenium（Ⅱ） complex containing six cyclodextrin units（6CD-Ru）, which exhibited much stronger emission signal compared to the parent compound Ru（bpy）_3Cl_2. Furthermore, the emission spectrum showed that the ATP-aptamer（ss DNA）could increase the fluorescence intensity of 6CD-Ru dramatically, attributed to the interaction between aptamer and cyclodextrin, which could provide protection to the ruthenium core from the quenching of emission by oxygen in the solution. With the addition of ATP, the interaction between aptamer and cyclodextrins on 6CD-Ru was diminished, since the ATP/aptamer complex had the priority to be formed,leading to the corresponding reduction of fluorescence intensity, which could be utilized to detect ATP quantitatively. A linear relationship was displayed between the fluorescence and the logarithm of ATP concentrations in the range from 1 nmol/L to 1μmmol/L with the detection limit of 0.5 nmol/L（S/N = 3）.The proposed fluorescent aptasensing strategy exhibited high sensitivity and specificity, without any labeling or amplification procedures, and it could also be applied for the detection of many other aptamer-specific targets.

关键词： Fluorescence Aptasensing ATP Metallocyclodextrin Host–guest recognition

Effects of Cell Microtopology on the In-plane Dynamic Crushing Analysis of Re-entrant Square Cellular Material

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Automotive Innovation 2018年第1期1卷 24-34页

作者： Fangwu Ma ying zhao Hongyu Liang Jiawei Wang State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchun 130025China Department of Mechanical Engineering University of MichiganAnn ArborMI 48109-2102USA

With the development of three-dimensional printing technologies, so-called cellular materials have achieved increasingattention due to outstanding properties. Unlike pure solid structures, properties of cellular materials are influenced by bothutilized material and cell microtopology. The present paper proposes a novel type of re-entrant square cellular *** explore the relationship between microtopology and macrodynamic responses systematically, an explicit dynamic finiteelement simulation method is used. This work starts by constructing theoretical models of relative density employing atwo-dimensional unit cell. Then, the effects of geometric features and configurations on dynamic properties are explored,and simulations indicate that variations of geometric parameters strongly affect properties and that the staggered re-entrantsquares are more stable than the regular re-entrant squares. Subsequently, the effects of the impact velocity on dynamiccrushing behaviors are elaborated. On this basis, the relationship of unit mass energy absorption and geometric features isobtained by employing the response surface method. Furthermore, with targets of maximum unit mass energy absorption andminimum relative density, the optimal structural parameters are achieved by using non-dominated sorting genetic *** study provides a detailed introduction to dynamic behaviors of cellular materials and guidance to design new structureswith superior characteristics of energy absorption.

关键词： Re-entrant cellular material Dynamic crushing Microtopology In-plane Finite element analysis

White matter abnormalities in young males with antisocial personality disorder Evidence from voxel-based morphometry-diffeomorphic anatomical registration using exponentiated lie algebra analysis

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Neural Regeneration Research 2011年第25期6卷 1965-1970页

作者： Daxing Wu ying zhao Jian Liao Huifang Yin Wei Wang Medical Psychological Research Institute Second Xiangya Hospital of Central South University Changsha 410011 Hunan Province China Department of Radiology Third Xiangya Hospital of Central South University Changsha 410013 Hunan Provionce China

Voxel-based morphometry-diffeomorphic anatomical registration using exponentiated lie algebra analysis was used to investigate the structural characteristics of white matter in young males with antisocial personality disorder （APD） and healthy controls without APD. The results revealed that APD subjects, relative to healthy subjects, exhibited increased white matter volume in the bilateral prefrontal lobe, right insula, precentral gyrus, bilateral superior temporal gyrus, right postcentral gyrus, right inferior parietal Iobule, right precuneus, right middle occipital lobe, right parahippocampal gyrus and bilateral cingulate, and decreased volume in the middle temporal cortex and right cerebellum. The white matter volume in the medial frontal gyrus was significantly correlated with antisocial type scores on the Personality Diagnostic Questionnaire in APD subjects. These experimental findings indicate that white matter abnormalities in several brain areas may contribute to antisocial behaviors in APD subjects.

关键词： white matter frontal lobe antisocial personality disorder voxel-based morphometry neuroimaging

Improving cis-regulatory elements modeling by consensus scaffolded mixture models

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Science China(Information Sciences) 2013年第1期56卷 219-229页

作者： JIANG HongShan zhao ying CHEN WenGuang ZHANG XueGong Department of Computer Science and Technology Tsinghua University MOE Key Laboratory of Bioinformatics and the Bioinformatics Division Department of AutomationTsinghua University

A position weight matrix(PWM) is widely accepted as a probabilistic representation for modeling protein-DNA binding *** studies showed that for factors which bind to divergent binding sites,mixtures of multiple PWMs improve *** propose a consensus scaffolded mixutre PWM(CSM) model to improve cis-regulatory elements modeling by allowing overlapping components represented by a set of PWMs,each of which corresponds to a binding pattern and is scaffolded by a degenerate *** addition,we propose a learning algorithm that involves an initial structure learning stage based on the frequent pattern mining and a refining stage based on the expectation maximization(EM) *** assess the merits of CSM using three independent *** a case-study of transcription factor Leu3,the derived CSM models agree with conventional mixtures but show better fitness according to Fermi-Dirac *** of the human-mouse conservation of predicted binding sites of 83 JASPAR transcription factors(TFs) shows that the CSM is as good as or better than the simple mixture,the context-specific independent(CSI) mixture,and the single PWM model,for 83%,84%,and 75% of the cases,***-fold cross validation on 46 TRANSFAC datasets shows that CSM model has better generality than other mixture models.

关键词： position weight matrix cis-regulatory elements mixture models frequent pattern mining EM algorithm

Hemophagocytic lymphohistiocytosis caused by STAT1 gain-offunction mutation is not driven by interferon-γ:A case report

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World Journal of Clinical Cases 2020年第23期8卷 6130-6135页

作者： Nan Liu Fen-ying zhao Xiao-Jun Xu Department of Hematology-oncology Children’s HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Hemophagocytic lymphohistiocytosis(HLH)is a life-threatening hyperinflammatory syndrome caused by many genetic ***1 is a DNAbinding factor that regulates gene *** caused by STAT1 gain-offunction(GOF)mutations has rarely been reported and its clinical manifestations and mechanisms are not clearly *** SUMMARY A 2-year-old boy presented to our hospital with recurrent fever for>20 *** patient had a personal history of persistent oral candidiasis and inoculation site infection during the past 2 *** was *** blood cell count showed severe anemia,thrombocytopenia and *** laboratory tests showed liver dysfunction,hypertriglyceridemia and decreased *** was found in the bone *** computed tomography showed a cavitary *** for fungal infection were *** T helper(Th)1/Th2 cytokine determination demonstrated moderately elevated levels of interleukin(IL)-6 and IL-10 with normal interferon(IFN)-γ*** bovis was identified in bronchoalveolar lavage fluid by polymerase chain *** testing identified a heterozygous mutation of c.1154C>T causing a T385M amino acid substitution in *** antibacterial and antifungal therapy,the febrile disease was not *** signs of HLH were relieved after HLH-94 protocol administration,except *** was not resolved until he received anti-tuberculosis *** stem cell transplantation was refused and the patient died six months later due to severe *** Patients with STAT1 GOF mutation have broad clinical manifestations and may develop *** form of HLH presents with normal IFN-γlevel without cytokine storm.

关键词： Hemophagocytic lymphohistiocytosis Signal transducer and activator of transcription 1 Gain-of-function Interferon gamma Mycobacterial disease Case report

Transition state and formation process of Stone–Wales defects in graphene

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Chinese Physics B 2022年第3期31卷 424-427页

作者： Jian-Hui Bai Yin Yao ying-zhao Jiang School of Aviation and Mechanical Engineering Changzhou Institute of Technology Changzhou 213032China School of Sciences Changzhou Institute of Technology Changzhou 213032China Department of Physics Guizhou Minzu University Guiyang 550025China

Stone–Wales(SW) defects are possibly formed in graphene and other two-dimensional materials, and have multiple influence on their physical and chemical properties. In this study, the transition state of SW defects in graphene is determined with the fully discrete Peierls theory. Furthermore, the atomic formation process is investigated by means of ab-initio simulations. The atomic structure change and energetics of the SW transformation are revealed. It is found that the transition state is at the SW bond rotation of 34.5°and the activation energy barrier is about 12 eV. This work provides a new method to investigate SW transformations in graphene-like materials and to explore unknown SW-type defects in other 2D materials.

关键词： graphene Stone–Wales(SW)defect transition state fully discrete Peierls theory

High Precision Prediction of Rolling Force Based on Fuzzy and Nerve Method for Cold Tandem Mill

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Journal of Iron and Steel Research International 2008年第2期15卷 23-27页

作者： JIA Chun-yu SHAN Xiu-ying NIU zhao-ping College of Mechanical Engineering Yanshan University Qinhuangdao 066004 Hebei China

The rolling force model for cold tandem mill was put forward by using the Elman dynamic recursive network method,based on the actual measured ***,a good assumption is put forward,which brings a full universe of discourse self-adjusting factor fuzzy control,closed-loop adjusting,based on error feedback and expertise into a rolling force prediction model,to modify prediction outputs and improve prediction precision and *** simulated results indicate that the method is highly effective and the prediction precision is better than that of the traditional *** relative error is less than ±4%,so the prediction is high precise for the cold tandem mill.

关键词： Elman dynamic recursive network fuzzy control cold tandem mill rolling force prediction