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A Recursive Algorithm for Offspring's Genotype Frequency of Selfing Population on Multiple Alleles with Limited Loci 被引量:2
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作者 陈奇 李大林 《Agricultural Science & Technology》 CAS 2010年第6期26-27,41,共3页
This paper studies the offspring's genotype frequency of the selfing population on multiple alleles with limited loci.A recursive algorithm is given for it.It is discovered that the genotype frequency of homozygous g... This paper studies the offspring's genotype frequency of the selfing population on multiple alleles with limited loci.A recursive algorithm is given for it.It is discovered that the genotype frequency of homozygous gene of limited loci increases by generations.Relative increment reduces by generations and the genotype frequency tends to a definite value finally.The genotype frequency of limited loci with hybrid gene tends to 0 finally.But it is possibility that the genotype frequency increases in previous generations then reduces later.It is found that the number of the hybrid gene are more,the speeds tending to 0 are quicker. 展开更多
关键词 Limited loci Multiple alleles selfing POPULATION Genotype frequency
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Design of multifunctional polymeric binders in silicon anodes for lithium‐ion batteries 被引量:3
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作者 Masytha Nuzula Ramdhiny Ju‐Won Jeon 《Carbon Energy》 SCIE EI CAS CSCD 2024年第4期140-163,共24页
Silicon(Si)is a promising anode material for lithium‐ion batteries(LIBs)owing to its tremendously high theoretical storage capacity(4200 mAh g−1),which has the potential to elevate the energy of LIBs.However,Si anode... Silicon(Si)is a promising anode material for lithium‐ion batteries(LIBs)owing to its tremendously high theoretical storage capacity(4200 mAh g−1),which has the potential to elevate the energy of LIBs.However,Si anodes exhibit severe volume change during lithiation/delithiation processes,resulting in anode pulverization and delamination with detrimental growth of solid electrolyte interface layers.As a result,the cycling stability of Si anodes is insufficient for commercialization in LIBs.Polymeric binders can play critical roles in Si anodes by affecting their cycling stability,although they occupy a small portion of the electrodes.This review introduces crucial factors influencing polymeric binders'properties and the electrochemical performance of Si anodes.In particular,we emphasize the structure–property relationships of binders in the context of molecular design strategy,functional groups,types of interactions,and functionalities of binders.Furthermore,binders with additional functionalities,such as electrical conductivity and self‐healability,are extensively discussed,with an emphasis on the binder design principle. 展开更多
关键词 CONDUCTIVITY lithium‐ion batteries molecular interactions polymeric binders self‐healability Si anodes
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Frequency Domain Fatigue Evaluation on SCR Girth-Weld Based on Structural Stress 被引量:2
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作者 ZHANG Long ZHAO Tian-feng 《China Ocean Engineering》 SCIE EI CSCD 2024年第2期255-270,共16页
The Steel Catenary Riser(SCR)is a vital component for transporting oil and gas from the seabed to the floating platform.The harsh environmental conditions and complex platform motion make the SCR’s girth-weld prone t... The Steel Catenary Riser(SCR)is a vital component for transporting oil and gas from the seabed to the floating platform.The harsh environmental conditions and complex platform motion make the SCR’s girth-weld prone to fatigue failure.The structural stress fatigue theory and Master S-N curve method provide accurate predictions for the fatigue damage on the welded joints,which demonstrate significant potential and compatibility in multi-axial and random fatigue evaluation.Here,we propose a new frequency fatigue model subjected to welded joints of SCR under multiaxial stress,which fully integrates the mesh-insensitive structural stress and frequency domain random process and transforms the conventional welding fatigue technique of SCR into a spectrum analysis technique utilizing structural stress.Besides,a full-scale FE model of SCR with welds is established to obtain the modal structural stress of the girth weld and the frequency response function(FRF)of modal coordinate,and a biaxial fatigue evaluation about the girth weld of the SCR can be achieved by taking the effects of multi-load correlation and pipe-soil interaction into account.The research results indicate that the frequency-domain fatigue results are aligned with the time-domain results,meeting the fatigue evaluation requirements of the SCR. 展开更多
关键词 SCR girth weld random vibration self(cross)power spectrum structural stress method biaxial fatigue damage
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RepBoTNet-CESA:An Alzheimer’s Disease Computer Aided Diagnosis Method Using Structural Reparameterization BoTNet and Cubic Embedding Self Attention
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作者 Xiabin Zhang Zhongyi Hu +1 位作者 Lei Xiao Hui Huang 《Computers, Materials & Continua》 SCIE EI 2024年第5期2879-2905,共27页
Various deep learning models have been proposed for the accurate assisted diagnosis of early-stage Alzheimer’s disease(AD).Most studies predominantly employ Convolutional Neural Networks(CNNs),which focus solely on l... Various deep learning models have been proposed for the accurate assisted diagnosis of early-stage Alzheimer’s disease(AD).Most studies predominantly employ Convolutional Neural Networks(CNNs),which focus solely on local features,thus encountering difficulties in handling global features.In contrast to natural images,Structural Magnetic Resonance Imaging(sMRI)images exhibit a higher number of channel dimensions.However,during the Position Embedding stage ofMulti Head Self Attention(MHSA),the coded information related to the channel dimension is disregarded.To tackle these issues,we propose theRepBoTNet-CESA network,an advanced AD-aided diagnostic model that is capable of learning local and global features simultaneously.It combines the advantages of CNN networks in capturing local information and Transformer networks in integrating global information,reducing computational costs while achieving excellent classification performance.Moreover,it uses the Cubic Embedding Self Attention(CESA)proposed in this paper to incorporate the channel code information,enhancing the classification performance within the Transformer structure.Finally,the RepBoTNet-CESA performs well in various AD-aided diagnosis tasks,with an accuracy of 96.58%,precision of 97.26%,and recall of 96.23%in the AD/NC task;an accuracy of 92.75%,precision of 92.84%,and recall of 93.18%in the EMCI/NC task;and an accuracy of 80.97%,precision of 83.86%,and recall of 80.91%in the AD/EMCI/LMCI/NC task.This demonstrates that RepBoTNet-CESA delivers outstanding outcomes in various AD-aided diagnostic tasks.Furthermore,our study has shown that MHSA exhibits superior performance compared to conventional attention mechanisms in enhancing ResNet performance.Besides,the Deeper RepBoTNet-CESA network fails to make further progress in AD-aided diagnostic tasks. 展开更多
关键词 Alzheimer CNN structural reparameterization multi head self attention computer aided diagnosis
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Self-Healable and Stretchable PAAc/XG/Bi_(2)Se_(0.3)Te_(2.7) Hybrid Hydrogel Thermoelectric Materials
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作者 Jinmeng Li Tian Xu +7 位作者 Zheng Ma Wang Li Yongxin Qian Yang Tao Yinchao Wei Qinghui Jiang Yubo Luo Junyou Yang 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第2期180-186,共7页
Thermoelectric power generators have attracted increasing interest in recent years owing to their great potential in wearable electronics power supply.It is noted that thermoelectric power generators are easy to damag... Thermoelectric power generators have attracted increasing interest in recent years owing to their great potential in wearable electronics power supply.It is noted that thermoelectric power generators are easy to damage in the dynamic service process,resulting in the formation of microcracks and performance degradation.Herein,we prepare a new hybrid hydrogel thermoelectric material PAAc/XG/Bi_(2)Se_(0.3)Te_(2.7)by an in situ polymerization method,which shows a high stretchable and self-healable performance,as well as a good thermoelectric performance.For the sample with Bi_(2)Se_(0.3)Te_(2.7)content of 1.5 wt%(i.e.,PAAc/XG/Bi2Se0.3Te27(1.5 wt%)),which has a room temperature Seebeck coefficient of-0.45 mV K^(-1),and exhibits an open-circuit voltage of-17.91 mV and output power of 38.1 nW at a temperature difference of 40 K.After being completely cut off,the hybrid thermoelectric hydrogel automatically recovers its electrical characteristics within a response time of 2.0 s,and the healed hydrogel remains more than 99%of its initial power output.Such stretchable and self-healable hybrid hydrogel thermoelectric materials show promising potential for application in dynamic service conditions,such as wearable electronics. 展开更多
关键词 bismuth telluride self healing thermoelectric material
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Health education intervention and its impact on patients with unilateral vestibular dysfunction:An information-motivation-behavioral model approach
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作者 Imshaal Musharaf Abdulqadir J Nashwan 《World Journal of Clinical Cases》 SCIE 2024年第20期4031-4033,共3页
Unilateral vestibular dysfunction is a one-sided impairment of vestibular function in one ear.Incorporating health education in treatment and rehabilitation plans can improve vestibular function,keep negative emotions... Unilateral vestibular dysfunction is a one-sided impairment of vestibular function in one ear.Incorporating health education in treatment and rehabilitation plans can improve vestibular function,keep negative emotions at bay,and reduce the extent of the condition.This letter investigates the impact of the informationmotivation-behavioral skills model as a medium for health education on patient outcomes.While offering encouraging observations,there are certain limitations,such as the study’s retrospective design,small sample size,use of subjective measures,and lack of longer follow-ups that challenge the cogency of the study.The study is a step toward transforming vestibular dysfunction treatment through health education. 展开更多
关键词 Vestibular dysfunction Health education Information-motivation-behavioral skills model Vestibular rehabilitation Self efficacy
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Predictors of permanent pacemaker implantation following transcatheter aortic valve replacement-the search is still on!
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作者 Sudesh Prajapathi Akshyaya Pradhan 《World Journal of Cardiology》 2024年第3期104-108,共5页
Several anatomical,demographic,clinical,electrocardiographic,procedural,and valve-related variables can be used to predict the probability of developing con-duction abnormalities after transcatheter aortic valve repla... Several anatomical,demographic,clinical,electrocardiographic,procedural,and valve-related variables can be used to predict the probability of developing con-duction abnormalities after transcatheter aortic valve replacement(TAVR)that necessitate permanent pacemaker(PPM)implantation.These variables include calcifications around the device landing zone and in the mitral annulus;pre-existing electrocardiographic abnormalities such as left and right bundle branch blocks(BBB),first-and second-degree atrioventricular blocks,as well as bifas-cicular and trifascicular blocks;male sex;diabetes mellitus(DM);hypertension;history of atrial fibrillation;renal failure;dementia;and use of self-expanding valves.The current study supports existing literature by demonstrating that type 2 DM and baseline right BBB are significant predictors of PPM implantation post-TAVR.Regardless of the side of the BBB,this study demonstrated,for the first time,a linear association between the incidence of PPM implantation post-TAVR and every 20 ms increase in baseline QRS duration(above 100 ms).After a 1-year follow-up,patients who received PPM post-TAVR had a higher rate of hospital-ization for heart failure and nonfatal myocardial infarction. 展开更多
关键词 Bundle branch block Self expanding aortic valve Atrioventricular node Diabetes mellitus QRS duration
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Evaluating the influence of a structured nursing protocol on targeted outcomes in rheumatoid arthritis patients
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作者 Mohammed Elsayed ZAKY Shimaa Magdi FARGHALY +2 位作者 Osama Mohamed Elsayed RAMADAN Rehab M.ABDELKADER Mostafa SHABAN 《Journal of Integrative Nursing》 2024年第1期22-28,共7页
Objective:Rheumatoid arthritis(RA)requires comprehensive management.Structured nursing protocols may enhance outcomes,but evidence is limited.This study evaluated the effect of a structured nursing protocol on RA outc... Objective:Rheumatoid arthritis(RA)requires comprehensive management.Structured nursing protocols may enhance outcomes,but evidence is limited.This study evaluated the effect of a structured nursing protocol on RA outcomes.Materials and Methods:In this one-group pre-post study,30 Egyptian RA patients completed assessments before and after a 12-week nursing protocol comprising education,psychosocial support,and self-management promotion.Assessments included clinical evaluation of joint counts,erythrocyte sedimentation rate(ESR),and C-reactive protein(CRP)and patient-reported Arthritis Self-Efficacy Scale(ASES),Health Assessment Questionnaire(HAQ),Visual Analog Scale(VAS)for pain,and Hospital Anxiety and Depression Scale(HADS).Results:The study demonstrated significant improvements in both clinical-and patient-reported outcomes.Joint count decreased from 18.4±4.2 to 14.2±3.8(P<0.001),ESR from 30.1±6.8 mm/h to 25.5±6.8 mm/h(P<0.01),and CRP levels from 15.2±3.6 mg/L to 11.8±2.9 mg/L(P<0.01)postintervention.Patient-reported outcomes showed a marked increase in ASES score from 140±25 to 170±30(P<0.001)and reductions in HAQ from 1.6±0.4 to 1.3±0.3(P<0.01),VAS pain score from 7.8±1.7 to 6.2±1.2(P<0.001),and HADS anxiety and depression scores from 11±3 to 8±2(P<0.05)and 10±2 to 7±1(P<0.05),respectively.Conclusion:A structured nursing protocol significantly improved clinical disease activity,physical functioning,pain,self-efficacy,and emotional well-being in RA patients.A multifaceted nursing intervention appears beneficial for optimizing RA outcomes. 展开更多
关键词 Nursing care patient education quality of life rheumatoid arthritis self‑management
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Safety and efficacy of Kaffes intraductal self-expanding metal stents in the management of post-liver transplant anastomotic strictures
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作者 Chee Lim Jonathan Ng +4 位作者 Babak Sarraf Rhys Vaughan Marios Efthymiou Leonardo Zorron Cheng Tao Pu Sujievvan Chandran 《World Journal of Transplantation》 2024年第2期88-98,共11页
BACKGROUND Endoscopic management is the first-line therapy for post-liver-transplant anas-tomotic strictures.Although the optimal duration of treatment with plastic stents has been reported to be 8-12 months,data on s... BACKGROUND Endoscopic management is the first-line therapy for post-liver-transplant anas-tomotic strictures.Although the optimal duration of treatment with plastic stents has been reported to be 8-12 months,data on safety and duration for metal stents in this setting is scarce.Due to limited access to endoscopic retrograde cholan-giopancreatography(ERCP)during the coronavirus disease 2019 pandemic in our centre,there was a change in practice towards increased usage and length-of-stay of the Kaffes biliary intraductal self-expanding stent in patients with suitable anatomy.This was mainly due to the theoretical benefit of Kaffes stents allowing for longer indwelling periods compared to the traditional plastic stents.METHODS Adult liver transplant recipients aged 18 years and above who underwent ERCP were retrospectively identified during a 10-year period through a database query.Unplanned admissions post-Kaffes stent insertion were identified manually through electronic and scanned medical records.The main outcome was the incidence of complications when stents were left indwelling for 3 months vs 6 months.Stent efficacy was calculated via rates of stricture recurrence between patients that had stenting courses for≤120 d or>120 d.RESULTS During the study period,a total of 66 ERCPs with Kaffes insertion were performed in 54 patients throughout their stenting course.In 33 ERCPs,the stent was removed or exchanged on a 3-month interval.No pancreatitis,perfor-ations or deaths occurred.Minor post-ERCP complications were similar between the 3-month(abdominal pain and intraductal migration)and 6-month(abdominal pain,septic shower and embedded stent)groups-6.1%vs 9.1%respectively,P=0.40.All strictures resolved at the end of the stenting course,but the stenting course was variable from 3 to 22 months.The recurrence rate for stenting courses lasting for up to 120 d was 71.4%and 21.4%for stenting courses of 121 d or over(P=0.03).There were 28 patients that were treated with a single ERCP with Kaffes,21 with removal after 120 d and 7 within 120 d.There was a significant improvement in stricture recurrence when the Kaffes was removed after 120 d when a single ERCP was used for the entire stenting course(71.0%vs 10.0%,P=0.01).CONCLUSION Utilising a single Kaffes intraductal fully-covered metal stent for at least 4 months is safe and efficacious for the management of post-transplant anastomotic strictures. 展开更多
关键词 Liver transplantation CHOLANGIOPANCREATOGRAPHY Endoscopic retrograde CONSTRICTION PATHOLOGIC Self expandable metallic stents Bile duct diseases CHOLESTASIS
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Unified Description of the Three Stable Particles in Self-Action Allows Determination of Their Relative Masses
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作者 Yair Goldin Halfon 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2024年第1期185-196,共12页
The Dirac equation γ<sub>μ</sub>(δ<sub>μ</sub>-eA<sub>μ</sub>)Ψ=mc<sup>2</sup>Ψ describes the bound states of the electron under the action of external potentials... The Dirac equation γ<sub>μ</sub>(δ<sub>μ</sub>-eA<sub>μ</sub>)Ψ=mc<sup>2</sup>Ψ describes the bound states of the electron under the action of external potentials, A<sub>μ</sub>. We assumed that the fundamental form of the Dirac equation γ<sub>μ</sub>(δ<sub>μ</sub>-S<sub>μ</sub>)Ψ=0 should describe the stable particles (the electron, the proton and the dark-matter-particle (dmp)) bound to themselves under the action of their own potentials S<sub>μ</sub>. The new equation reveals that self energy is consequence of self action, it also reveals that the spin angular momentum is consequence of the dynamic structure of the stable particles. The quantitative results are the determination of their relative masses as well as the determination of the electromagnetic coupling constant. 展开更多
关键词 Electron in Self Action Electron-Dark-Matter Particle Mass Ratio Analytic Description Dark-Matter-Particle
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On Our Peculiar Black Hole Universe
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作者 Paolo Christillin 《Journal of Modern Physics》 2024年第2期179-183,共5页
The black hole model of the Universe evolution, accompanied by matter creation, already successfully accounting for many features of the past is discussed and further justified. It is once more stressed that even a ve... The black hole model of the Universe evolution, accompanied by matter creation, already successfully accounting for many features of the past is discussed and further justified. It is once more stressed that even a very large object but with a big mass is in its own right a black hole. As a consequence, the extrapolation of the past predicts for the future no big crunch, nor big bounce but a steady expansion with smaller matter density. 展开更多
关键词 Universe Expansion Black Hole Model Matter Creation Gravitational Self Energy
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基于免疫的入侵检测方法研究 被引量:13
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作者 董晓梅 于戈 +1 位作者 肖珂 向光 《小型微型计算机系统》 CSCD 北大核心 2005年第10期1736-1741,共6页
生物的免疫系统和计算机安全系统所面临及需要解决的问题十分类似,采用生物免疫思想的入侵检测技术可以结合 异常检测和误用检测的优点.研究了基于免疫的入侵检测方法,对Self集的确定和有效检测器的生成方法进行了研宛和改进, 基于反... 生物的免疫系统和计算机安全系统所面临及需要解决的问题十分类似,采用生物免疫思想的入侵检测技术可以结合 异常检测和误用检测的优点.研究了基于免疫的入侵检测方法,对Self集的确定和有效检测器的生成方法进行了研宛和改进, 基于反向选择机制提出了一种新的有效检测器生成算法,可以使用较少的有效检测器检测网络中的异常行为,从而提高了有效 检测器生成和入侵检测的速度.通过与基于已有的有效检测器生成算法的系统进行比较,使用本文的方法构造的入侵检测系统 速度更快,且有较高的准确性. 展开更多
关键词 免疫 入侵检测 反向选择 SELF集 有效检测器
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一种基于用户行为的Self集构造和演化方法 被引量:11
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作者 梁意文 李俊涛 +1 位作者 郭学理 康立山 《计算机应用研究》 CSCD 北大核心 2001年第9期7-9,14,共4页
对计算机安全免疫系统中Self集构造的可能性和特征码选取的原则进行了探讨性的分析 ,提出了一种基于用户行为的Self集构造方法。Self集中的特征码包含了用户的操作、操作对象和操作参数。
关键词 演化计算 入侵检测 SELF集 计算机安全免疫系统 计算机网络 防火墙
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非结构网格三维斜压模型研究人类活动对海南岛清澜潮汐汊道水动力影响 被引量:8
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作者 王道儒 温晶 +1 位作者 龚文平 赵军鹏 《海洋工程》 CSCD 北大核心 2011年第1期53-60,共8页
清澜潮汐汊道为海南岛东部一个典型的泻湖-潮汐汊道-沙坝系统,由于其优越的自然条件而成为开发的重点区域。近几年的人类活动主要包括:口门西侧的围填工程,航道的疏浚和八门湾泻湖内的围塘工程。采用SELFE模型,结合观测资料,研究了不同... 清澜潮汐汊道为海南岛东部一个典型的泻湖-潮汐汊道-沙坝系统,由于其优越的自然条件而成为开发的重点区域。近几年的人类活动主要包括:口门西侧的围填工程,航道的疏浚和八门湾泻湖内的围塘工程。采用SELFE模型,结合观测资料,研究了不同人类活动对潮汐汊道的潮波、潮通量与涨落潮历时、河口重力环流、盐水入侵和河口羽流的影响。结果表明不同的人类活动其对动力的影响不同,口门西侧围填工程减小了潮汐汊道的潮差,对潮通量和盐水入侵影响很小;航道疏浚则加大了潮差和潮通量,加强了河口环流和盐水入侵;泻湖内围塘工程使潮差有所增大,但减小了潮通量,对盐水入侵的影响不显著。口门西侧围填工程改变了河口羽流的路径,而航道疏浚则使河口羽流更加向海扩散。 展开更多
关键词 潮汐汊道 水动力 SELFE模型 海南
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Haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy with surface heparinization using electrostatic self assembly technology 被引量:8
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作者 余森 于振涛 +3 位作者 韩建业 WANG Gui 牛金龙 Matthew S.Dargusch 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第12期3046-3052,共7页
The haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy was studied after surface heparinization. A layer of sol-gel TiO2 films was applied on the alloy samples followed by active treatment in the bio-functiona... The haemocompatibility of Ti-3Zr-2Sn-3Mo-25Nb biomedical alloy was studied after surface heparinization. A layer of sol-gel TiO2 films was applied on the alloy samples followed by active treatment in the bio-functionalized solution for introducing the OH- and groups, and then the heparin was immobilized on the active TiO2 films through the electrostatic self assembly technology. It is shown that the heparinized films are mainly composed of anatase and rutile with smooth and dense surface. In vitro blood compatibility was evaluated by haemolysis test, clotting time and platelet adhesion behavior tests. The results show that the haemocompatibility of the alloy could be significantly improved by surface heparinization. 展开更多
关键词 Ti-3Zr-2Sn-3Mo-25Nb alloy HAEMOCOMPATIBILITY HEPARINIZATION surface modification electrostatic self assembly
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近岸溢油漂移扩散预测方法研究——以胶州湾溢油事件为例 被引量:4
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作者 高志刚 李程 +1 位作者 李欢 王国松 《海洋通报》 CAS CSCD 北大核心 2020年第2期272-280,共9页
近些年,由于中国经济的高速发展,原油需求逐年增长,同时海上溢油事故发生的风险也在加剧。海上溢油会严重破坏海洋环境,危害我国经济发展,加强溢油漂移扩散预报研究能够为海上溢油应急响应提供技术支撑。因此,国家海洋信息中心研发了海... 近些年,由于中国经济的高速发展,原油需求逐年增长,同时海上溢油事故发生的风险也在加剧。海上溢油会严重破坏海洋环境,危害我国经济发展,加强溢油漂移扩散预报研究能够为海上溢油应急响应提供技术支撑。因此,国家海洋信息中心研发了海上突发事件应急一体化预测预警系统。该系统基于GIS平台研发,能够在二维电子海图基础上叠加相关的海洋环境动力要素信息,模拟溢油扩散和漂移态势,同时计算剩余油量,估算溢油面积以及岸线吸附程度等。2013年11月22日,山东黄岛发生输油管道爆炸事故,造成大量原油溢入胶州湾。本文利用该系统结合高分辨率大气模型WRF的三重嵌套技术和海流模型SELFE的非结构化网格加密技术,对事故溢油漂移扩散开展了预测工作。预测结果显示,油污受胶州湾内往复流的影响极大,72 h后,胶州湾内外大部分海域都将存在油污,主要集中在黄岛沿岸海域、团岛及浮山湾附近,预测扫海面积为70.32 km^2。经海事部门高分辨率卫星观测结果印证,系统模拟的溢油分布较为合理。该系统的业务化应用为相关海上溢油污染应急工作提供了一定理论依据和参考。 展开更多
关键词 溢油污染 数值模拟 WRF SELFE 扩散预测
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他人作弊与自己作弊:社会损失的中介作用和自尊的调节作用 被引量:6
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作者 舒首立 杨沈龙 +1 位作者 白洁 郭永玉 《心理学探新》 CSSCI 北大核心 2017年第1期48-53,共6页
研究将考试作弊看成是一种风险决策的结果,探讨他人作弊对自己作弊行为的影响及其机制。研究采用情景实验和问卷调查考察他人作弊、社会损失、自尊、self-esteem与自己作弊之间的关系,发现:(1)社会损失在他人作弊和自己作弊之间起中介作... 研究将考试作弊看成是一种风险决策的结果,探讨他人作弊对自己作弊行为的影响及其机制。研究采用情景实验和问卷调查考察他人作弊、社会损失、自尊、self-esteem与自己作弊之间的关系,发现:(1)社会损失在他人作弊和自己作弊之间起中介作用;(2)自尊负向调节社会损失与自己作弊的关系;(3)self-esteem对社会损失与自己作弊的关系无显著调节作用。 展开更多
关键词 他人作弊 社会损失 自尊 self—esteem 自己作弊
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A Comparative Study on the Quality Components Between Self Pollinated Seeds and Naturally Pollinated Seeds in Brassica napus L. in Sichuan Ecological Region 被引量:2
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作者 张锦芳 蒲晓斌 +4 位作者 李浩杰 黄驰 李蒲 张谦 蒋梁材 《Agricultural Science & Technology》 CAS 2009年第1期19-21,80,共4页
[ Objective] This study was to reveal the differences in crude fat and glucosinolates between self pollinated seeds and naturally pollinated seeds in Brassica napus in sichuan ecological region.. [ Method] Near-infrar... [ Objective] This study was to reveal the differences in crude fat and glucosinolates between self pollinated seeds and naturally pollinated seeds in Brassica napus in sichuan ecological region.. [ Method] Near-infrared spectroscopy method (NIRS) was employed to measure the quality components in self pollinated seeds and naturally pollinated seeds of 861 shares of Brassica napus from Sichuan ecological region. And correlation analysis and regression analysis were conducted based on the experimental data via SPSS (statistics package for social science). [ Result] The contents of crude fat in the self pollinated seeds were commonly a higher than that in the naturally pollinated seeds at 0.01 significant level; while the contents of glucosinolates in the self pollinated seeds and the naturally pollinated seeds were insignificantly different. Both the correlation relationship and linear regression for the crude fat between the self pollinated seeds and naturally pollinated seeds reached the significant level. The regression equations for the contents of crude fat(y1 ) and glucosinolates( y2 ) in the naturally pollinated seeds and of crude fat( x1 ) and glucosinolates( x2 ) in self pollinated seeds were respectively determined to be y1 = 16.844 +0.614x1 and y2 = -0.620 + 1.017 x2. [ Conclusion] In Brassica napus breeding, crude fat in naturally pollinated seeds should be emphatically taken into account, meanwhile concurrently considering that in self pollinated seeds; while glucosinolates in both the self pollinated seeds and the naturally pollinated seeds must be simultaneously concerned. 展开更多
关键词 Brassica napus L. Self pollinated seeds Naturally pollinated seeds Content of crude fat Content of gluccsinolates Near-infrared spectroscopy method
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改进的球形检测器入侵检测算法 被引量:2
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作者 翁广安 余胜生 周敬利 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2008年第4期51-53,71,共4页
提出了一种基于球形检测器的改进型入侵检测算法,并对其有效性进行了实验验证.为提高self和non-self之间界线划分的精确度,提出了可变半径self球体模型,在训练检测器过程中,加入对self集合数据点分布特性的考虑.模型在高斯分布的基础上... 提出了一种基于球形检测器的改进型入侵检测算法,并对其有效性进行了实验验证.为提高self和non-self之间界线划分的精确度,提出了可变半径self球体模型,在训练检测器过程中,加入对self集合数据点分布特性的考虑.模型在高斯分布的基础上估计数据点的分布密度,并据此计算各训练点相应的球体半径.实验显示:在Wine数据集和DARPA99网络数据集上,改进算法的检测能力都获得了提高;在提高DARPA99网络数据集检测率的同时,降低了误报率.结果表明:DARPA99网络数据集的分布特性符合模型的假设,而Wine数据集不符合这种假设. 展开更多
关键词 人工免疫系统 入侵检测 多峰值进化 可变半径self球体模型
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高阶亚正规熔体模型 被引量:3
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作者 蒋国昌 徐匡迪 《中国有色金属学报》 EI CAS CSCD 北大核心 2002年第5期1040-1049,共10页
SELF SReM模型属于高阶亚正规熔体模型的范畴。它着眼于多元金属液和冶金熔渣中均相 (单一液相或单一固相 )区全域内组元活度的系统化 ,为工程问题的热力学预测提供足够可靠的组元活度数据库。系统地介绍了此模型的特点、结构及简化形... SELF SReM模型属于高阶亚正规熔体模型的范畴。它着眼于多元金属液和冶金熔渣中均相 (单一液相或单一固相 )区全域内组元活度的系统化 ,为工程问题的热力学预测提供足够可靠的组元活度数据库。系统地介绍了此模型的特点、结构及简化形式 ,所含参数的拟合方法 。 展开更多
关键词 熔体 组元活度 相固预报 高阶亚正规熔体模型 SELF—SReM模型 热力学预测 钢铁冶金
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