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Waveband Selection with Equivalent Prediction Performance for FTIR/ATR Spectroscopic Analysis of COD in Sugar Refinery Waste Water

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Computers, Materials & Continua 2019年第5期59卷 687-695页

作者： Jun Xie dapeng sun Jiaxiang Cai Fuhong Cai The Mechanical and Electrical Engineering College Hainan UniversityHaikouHainan570228China Department of Industrial Systems Engineering&Management National University of Singapore119077Singapore

The level of chemical oxygen demand(COD)is an important index to evaluate whether sewage meets the discharge requirements,so corresponding tests should be carried out before *** transform infrared spectroscopy(FTIR)and attenuated total reflectance(ATR)can detect COD in sewage effectively,which has advantages over conventional chemical analysis *** the selection of characteristic bands was one of the key links in the application of FTIR/ATR *** this work,based on the moving window partial least-squares(MWPLS)regression to select a characteristic wavelength,a method of equivalent wavelength selection was proposed combining with paired t-test equivalent *** results showed that the prediction effect of the selected wavelength was very close to that of the MWPLS method,while the number of wavelength points was much ***,RP,Ave,SEPStd,and RP,Std which characterized the modeling effect were 26.3 mg L^-1,0.969,3.49 mg L^-1,and 0.006,*** validation effect V-SEP and V-RP were 28.64 mg L^-1 and 0.960,*** selected waveband was between 1809 cm^-1 and 1568 cm^-*** method was of more reference value for the design of FTIR/ATR spectral instrument for COD detection.

关键词： Sugar refinery wastewater COD FTIR/ATR spectroscopy waveband selection

Experimental study of near-bed concentration and sediment vertical mixing parameter for vertical concentration distribution in the surf zone

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International Journal of Sediment Research 2020年第1期35卷 27-41页

作者： Yang Zhang Zhili Zou Wushan Xue dapeng sun State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology

Two formulae for the near-bed concentration(C) and the sediment vertical mixing parameter(m) are established based on a large scale wave flume *** advantage of the new formulae is that the turbulent kinetic energy induced by wave breaking can be taken into account;the formula for Cis in terms of the near-bed,time-averaged turbulent kinetic energy,and the formula for m is in terms of depth-and time-averaged turbulent kinetic energy.A new expression for suspended sediment load also is established by depth integration of the vertical distribution of the suspended sediment concentration obtained on basis of the new *** validation is done by comparing the predicted Cand m to measurements for different types of waves(regular wave,wave group,and irregular wave),and good agreement is *** advantages of the proposed formulae over previous formulae also are discussed.

关键词： Near-bed concentration Sediment vertical mixing parameter Turbulent kinetic energy Surf zone Wave type

Endovascular treatment for acute ischaemic stroke due to medium vessel occlusion:data from ANGEL-ACT registry

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Stroke & Vascular Neurology 2023年第1期8卷 51-58页

作者： dapeng sun Raynald Xiaochuan Huo Baixue Jia Xu Tong Anxin Wang Gaoting Ma Ning Ma Feng Gao dapeng Mo Zhongrong Miao 无 Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurosurgery Beijing Fengtai You anmen HospitalBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalBeijingChina on behalf of the ANGEL-ACT Study Group

Objectives To investigate the safety and efficacy of endovascular treatment(EVT)for acute medium vessel occlusion(MeVO)in the anterior circulation and to explore the independent predictors of the 90-day good outcome for such *** Data from ANGEL-ACT Registry were analysed in our *** outcomes,such as the modified Rankin Scale(mRS)at 90 days,successful recanalisation rate and symptomatic intracranial haemorrhage(SICH)rate,were compared between MeVO and acute large vessel occlusions(LVO).Then,the independent predictors of the good outcome at 90 days in MeVO patients were determined by the logistic regression *** We included 1032 subjects in the analysis,of which,147 were MeVO and 885 were *** at 90 days distribution(3(0-4)vs 3(0-5),common odds ratio(OR)=1.00,95%confidence interval(CI)0.73 to 1.38,p=0.994),SICH rate(4.8%vs 8.9%;OR=0.59,95%CI 0.26 to 1.34,p=0.205)and successful recanalisation rate(89.8%vs 89.7%;OR=1.0095%CI 0.51 to 1.93,p=0.992)were similar between the MeVO and LVO groups after adjusting for the *** identified that baseline neutrophil-to lymphocyte ratio≤4.1(OR=2.13,95%CI 1.14 to 3.99,p=0.019),baseline National Institutes of Health Stroke Scale≤14(OR=1.96,95%CI 1.02 to 3.80,p=0.045)and mechanical thrombectomy passes≤1(OR=2.16,95%CI 1.14 to 4.11,p=0.021)were independent predictors of the 90-day good outcome in MeVO patients undergoing *** Patients with MeVO achieved similar 90-day mRS,SICH rate and successful recanalisation rate after EVT compared with patients with *** independent predictors of 90-day good outcome in MeVO patients undergoing EVT were determined,which should be highly considered in MeVO stroke management.

关键词： acute occlusion treatment

Incidence and predictors of futile recanalisation after endovascular therapy in acute vertebrobasilar artery occlusion patients:insight from the ANGEL-ACT registry

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Stroke & Vascular Neurology 2024年第3期9卷 289-294,I0248-I0250页

作者： dapeng sun Xinguang Yang Xiaochuan Huo Raynald- Baixue Jia Xu Tong Anxin Wang Ning Ma Feng Gao dapeng Mo Zhongrong Miao Interventional Neuroradiology Department of NeurologyBeijing Tiantan HospitalCaptial Medical UniversityBeijingChina Department of Neurology Sun Yat-Sen Memorial HospitalGuangzhouGuangdongChina Cerebrovascular Disease Department Neurological Disease CenterBeijing Anzhen HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina

Objectives To identify the occurrence rate and predictors of futile recanalisation after endovascular therapy(EVT)for acute vertebrobasilar artery occlusion(VBAO).Methods Participants of the Endovascular Treatment Key Technique and Emergency Workflow Improvement of Acute Ischaemic Stroke(ANGEL-ACT)registry were selected for the *** recanalisation was defined as patients did not achieve a 90-day good outcome(modified Rankin Scale≤3)despite successful recanalisation(modified Treatment in Cerebral Ischaemia Scale≥2b)after the *** logistic regression analysis was conducted to find independent predictors of futile recanalisation in VBAO patients undergoing *** Three hundred and fifteen patients with VBAO who achieved successful recanalisation after EVT were included in current analysis,of whom,155(49.2%)suffered futile recanalisation,and 160 achieved effective *** the multivariable analysis,we found admission National Institutes of Health Stroke Scale(NIHSS)≥19(OR 4.81,95%CI 2.76 to 8.39,p<0.001),platelet-lymphocyte ratio(PLR)≥162.2(OR 1.93,95%CI 1.14 to 3.27,p=0.001),onset-to-puncture time(OTP)≥334min(OR 2.15,95%CI 1.25 to 3.68,p=0.005)and use of general anesthesia(GA)(OR 1.87,95%CI 1.09 to 3.22,p=0.024)were associated with futile *** Futile recanalisation after EVT occurred 49.2%of VBAO patients in the ANGEL-ACT ***≥19,PLR≥162.2,OTP≥334min and use of GA were independent predictors of futile recanalisation.

关键词： patients anesthesia occlusion

Balloon Angioplasty for Symptomatic Intracranial Artery Stenosis (BASIS): protocol of a prospective, multicentre, randomised, controlled trial

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Stroke & Vascular Neurology 2024年第1期9卷 66-74页

作者： Xuan sun Ming Yang dapeng sun Guangge Peng Yiming Deng Xingquan Zhao Liping Liu Ning Ma Feng Gao dapeng Mo Wengui Yu Yongjun Wang Yilong Wang Zhongrong Miao Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Department of Neurology Beijing Luhe HospitalCapital Medical UniversityBeijingChina Department of Neurology Comprehensive Stroke&Cerebrovascular CenterUniversity of California IrvineIrvineCaliforniaUSA Chinese Institute for Brain Research BeijingChina National Center for Neurological Diseases BeijingChina Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases BeijingChina Beijing Laboratory of Oral Health Capital Medical UniversityBeijingChina

Background The superiority of balloon angioplasty plus aggressive medical management(AMM)to AMM alone for symptomatic intracranial artery stenosis(sICAS)on efficacy and safety profiles still lacks evidence from randomised controlled trials(RCTs).Aim To demonstrate the design of an RCT on balloon angioplasty plus AMM for *** Balloon Angioplasty for Symptomatic Intracranial Artery Stenosis(BASIS)trial is a multicentre,prospective,randomised,open-label,blinded end-point trial to investigate whether balloon angioplasty plus AMM could improve clinical outcome compared with AMM alone in patients with *** eligible in BASIS were 35–80 years old,with a recent transient ischaemic attack within the past 90 days or ischaemic stroke between 14 days and 90 days prior to enrolment due to severe atherosclerotic stenosis(70%–99%)of a major intracranial *** eligible patients were randomly assigned to receive balloon angioplasty plus AMM or AMM alone at a 1:1 *** groups will receive identical AMM,including standard dual antiplatelet therapy for 90 days followed by long-term single antiplatelet therapy,intensive risk factor management and life-style *** participants will be followed up for *** outcomes Stroke or death in the next 30 days after enrolment or after balloon angioplasty procedure of the qualifying lesion during follow-up,or any ischaemic stroke or revascularisation from the qualifying artery after 30 days but before 12 months of enrolment,is the primary *** BASIS trail is the first RCT to compare the efficacy and safety of balloon angioplasty plus AMM to AMM alone in sICAS patients,which may provide an alternative perspective for treating *** registration number NCT03703635;https://***.

关键词： balloon prospective centre

Mechanical thrombectomy with combined stent retriever and contact aspiration versus stent retriever alone for acute large vessel occlusion:data from ANGEL-ACT registry

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Stroke & Vascular Neurology 2023年第4期8卷 318-326页

作者： Xiaochuan Huo dapeng sun Mingkai Hu Raynald Baixue Jia Xu Tong Gaoting Ma Anxin Wang Ning Ma Feng Gao dapeng Mo Zhongrong Miao the ANGEL-ACT Study group Department of Interventional Neuroradiology Beijing Tiantan HospitalCapital Medical UniversityBeijingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina

Background and purpose An analysis of the ASTER 2 trial revealed similar final recanalisation levels and clinical outcomes in acute large vessel occlusion(LVO)stroke between stent retrieval(SR)alone as a first-line mechanical thrombectomy(MT)technique(SR alone first-line)and concomitant use of contact aspiration(CA)plus SR as a first-line MT technique(SR+CA first-line).The purpose of the present study was to compare the safety and efficacy of SR+CA first-line with those of SR alone first-line for patients with LVO in *** We conducted the present study by using the data from the ANGEL-ACT *** divided the selected patients into SR+CA first-line and SR alone first-line *** performed logistic regression and generalised linear models with adjustments to compare the angiographic and clinical outcomes,including successful/complete recanalisation after the first technique alone and all procedures,first-pass successful/complete recanalisation,number of passes,90-day modified Rankin Scale,procedure duration,rescue treatment and intracranial haemorrhage within 24 *** Of the 1233 enrolled patients,1069(86.7%)received SR alone first-line,and 164(13.3%)received SR+CA ***+CA first-line was associated with more thrombectomy passes(3(2-4)vs 2(1-2);β=1.77,95%CI=1.55 to 1.99,p0.05)between the two *** Patients undergoing SR+CA first-line had more thrombectomy passes and longer procedure duration than patients undergoing SR alone ***,we suggested that SR+CA first-line was not superior to SR alone first-line in final recanalisation level,first-pass recanalisation level and 90-day clinical outcomes in the Chinese population.

关键词： throm alone occlusion

Elimination of inter-domain interactions increases the cleavage fidelity of the restriction endonuclease Dralll

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Protein & Cell 2014年第5期5卷 357-368页

作者： Wei Zhuo Xuhui Lai Liqing Zhang Siu-Hong Chan Fengjuan Li Zhenyu Zhu Maojun Yang dapeng sun State Key Laboratory of Biomembrane and Membrane Biotechnology Tsinghua-Peking Center for Life Sciences School of Life Sciences Tsinghua University Beijing 100084 China New England BioLabs Shanghai R&D Center Shanghai 201203 China New England BioLabs Inc. Ipswich MA 01938 USA

Dralll is a type liP restriction endonucleases （REases） that recognizes and creates a double strand break within the gapped palindromic sequence CACTNNN^GTG of double-stranded DNA indicates nicking on the bottom strand; indicates nicking on the top strand）. However, wild type Dralll shows significant star activity. In this study, it was found that the prominent star site is CATSGTT;GTG, consisting of a star 5＇ half （CAT） and a canonical 3＇ half （GTG）. Dralll nicks the 3＇ canonical half site at a faster rate than the 5＇ star half site, in contrast to the similar rate with the canonical full site. The crystal structure of the Dralll protein was solved. It indicated, as supported by mutagenesis, that Dralll possesses a ~13a- metal HNH active site. The structure revealed extensive intra-molecular interactions between the N-terminal domain and the C-terminal domain containing the HNH active site. Disruptions of these interactions through site- directed mutagenesis drastically increased cleavage fidelity. The understanding of fidelity mechanisms will enable generation of high fidelity REases.

关键词： Dralll restriction endonuclease fidelity,substrate specificity star activity inter-domain interactionsite-directed mutagenesis

维普期刊数据库

Study on Automatic Generation Algorithm of LOD Model based on Complex Features

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International Journal of Technology Management 2013年第9期 45-47页

作者： sun dapeng Yang ChengJie School of Resources and Environment North China University of Water Resources and Electric Power ZhengZhou China

For certain applications, the paper proposes a LOD generation algorithm based on model feature, to measure the value of certain features as weight, and to just the geometrical characteristics and retains the full feature in the simplified model. Algorithm is simple and intuitive, LOD models can be generated by a continuous smooth transition and meet the requirements of real-time display. Experimental results show the effectiveness of the algorithm. Algorithm is simple and quick, broad applicability, the improve simplified algorithm is very suitable for modulation texture operator, generating algorithm based on a lookup table to meet the model requirements for real-time display.

关键词： virtual reality LOD models improved model

FeO/Pt(111)与FeO_2/Pt(111)的几何、电子结构及表面氧活性的第一性原理研究(英文)

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催化学报 2013年第5期34卷 973-978页

作者：孙大鹏李微雪中国科学院大连化学物理研究所催化基础国家重点实验室辽宁大连116023

采用密度泛函理论系统研究了超薄氧化物膜/金属体系FeO/Pt和FeO2/Pt及其表面不同区域(FCC,HCP和TOP)的几何结构、电子性质及氧的活性.研究发现,表面O-Fe高度差δz作为一个重要的特征结构参数直接影响局域表面静电势和表面氧的结合能:δ... 详细信息

采用密度泛函理论系统研究了超薄氧化物膜/金属体系FeO/Pt和FeO2/Pt及其表面不同区域(FCC,HCP和TOP)的几何结构、电子性质及氧的活性.研究发现,表面O-Fe高度差δz作为一个重要的特征结构参数直接影响局域表面静电势和表面氧的结合能:δz越大,静电势越大,氧的结合能越弱.计算发现,在FeO/Pt体系中,δz顺序为FCC>HCP>TOP,而FeO2/Pt中是FCC>TOP>HCP.此外,在FeO/Pt中,电荷转移方向是从氧化物膜到衬底,Fe的表观价态为+2.36,表面功函较纯Pt(111)的变化可忽略;而FeO2/Pt中,电荷转移的方向是从衬底到氧化物,Fe的表观价态为+2.95,表面功函较纯Pt增加1.24eV.进一步分析了电荷转移和表面偶极对电子性质的作用机制.这些研究结果对于认识超薄氧化物薄膜对表面几何结构、电子性质、表面氧活性的调制具有重要的启示意义.

关键词：超薄氧化物膜超结构表面褶皱电荷转移功函

维普期刊数据库