|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 基于EMMS介尺度模型的双分散鼓泡流化床的模拟显示文摘双分散气固鼓泡流化床中颗粒通常具有不同粒径或密度,导致产生颗粒偏析等现象,影响传递和反应行为。颗粒分离和混合与气泡运动密不可分,其中相间曳力起关键作用。最近Ahmad等提出了一种基于气泡结构的双分散介尺度曳力模型,能成功预测双分散鼓泡流化床的床层膨胀系数。本研究耦合该曳力模型与连续介质方法,模拟了两种不同的双分散鼓泡流化床,通过分析不同流化状态下的气泡运动、颗粒浓度比的轴向分布等参数,进一步检验模型的适用性。研究表明,当双分散颗粒处于完全流化状态时,耦合双分散介尺度曳力模型可合理预测不同颗粒的分离现象;而其处于过渡流化状态时,新曳力模型和传统模型均无法获得合理结果,此时调节固固曳力可改进模拟结果。 | 佟颖 Ahmad Nouman 鲁波娜 王维 | 2019 | 化工学报2019，70，5： | 9 |
| 2 | An Inception Module CNN Classifiers Fusion Method on Pulmonary Nodule Diagnosis by Signs显示文摘A 'sign' on a lung CT image refers to a radiologic finding that suggests a pathological progression of some specific disease. Analysis of CT signs is helpful to understand the pathological origin of the lesion. In-depth study of lung nodules classification with different CT signs will help to distinguish benign and malignant nodules more clearly and accurately. To this end, we propose an Inception module-based ensemble classification method for pulmonary nodule diagnosis with different nodule signs. We first construct a Convolutional Neural Network(CNN) classifier adopting Inception modules and pre-train it on ImageNet. We then fine-tune this pre-trained classifier on 10 different lung nodule sign sample sets, and fuse these 10 classifiers with an artificial immune ensemble algorithm. The overall sensitivity, specificity, and accuracy of our proposed Artificial Immune Algorithm-based Inception Networks Fusion(AIA-INF) algorithm are 82.22%, 93.17%, and 88.67%, respectively, which are significantly higher than those of the alternative Bagging and Boosting methods. The experimental results show that our Inception-based ensemble classifier offers promising performance, and compared with other CADx systems, this scheme can offer a more detailed reference for diagnosis, and can be valuable for junior radiologist training. | Guangyuan Zheng Guanghui Han Nouman Qadeer Soomro | 2020 | Tsinghua Science and Technology2020，25，3： | 6 |
| 3 | 基于拓扑优化的四旋翼无人机结构设计显示文摘为实现某四旋翼无人机的轻量化结构设计,采用Inspire进行拓扑优化设计,并对获得的拓扑优化结构进行静力分析和动力学分析。分析结果表明,通过拓扑优化方法获得的无人机结构应力分布合理,结构位移小且频率较高,满足静态和动态结构设计要求。研究结果可为实现低成本、轻量化的四旋翼无人机结构设计提供一条新的途径。 | 吉亮 丁文杰 谷春璐 李玉华 SAEED Nouman 陈卓 龙凯 | 2019 | 计算机辅助工程2019，28，3： | 6 |
| 4 | Investigation on the process parameters of TIG-welded aluminum alloy through mechanical and microstructural characterization显示文摘Multi-pass TIG welding was conducted on plates(15×300×180 mm^(3))of aluminum alloy Al-5083 that usually serves as the component material in structural applications such as cryogenics and chemical processing industries.Porosity formation and solidification cracking are the most common defects when TIG welding Al-5083 alloy,which is sensitive to the welding heat input.In the experiment,the heat input was varied from 0.89 kJ/mm to 5 kJ/mm designed by the combination of welding torch travel speed and welding current.Tensile,micro-Vicker hardness and Charpy impact tests were executed to witness the impetus response of heat input on the mechanical properties of the joints.Radiographic inspection was performed to assess the joint’s quality and welding defects.The results show that all the specimens displayed inferior mechanical properties as compared to the base alloy.It was established that porosity was progressively abridged by the increase of heat input.The results also clinched that the use of medium heat input(1-2 kJ/mm)offered the best mechanical properties by eradicating welding defects,in which only about 18.26% of strength was lost.The yield strength of all the welded specimens remained unaffected indica ted no influence of heat input.Partially melted zone(PMZ)width also affected by heat input,which became widened with the increase of heat input.The grain size of PMZ was found to be coarser than the respective grain size in the fusion zone.Charpy impact testing revealed that the absorbed energy by low heat input specimen(welded at high speed)was greater than that of high heat input(welded at low speed)because of low porosity and the formation of equiaxed grains which induce better impact toughness.Cryogenic(-196℃)impact testing was also performed and the results corroborate that impact properties under the cryogenic environment revealed no appreciable change after welding at designated heat input.Finally,Macro and micro fractured surfaces of tensile and impact specimens were analyzed using Stereo and Scanning Electron Microscopy(SEM),which have supported the experimental findings. | Muhammad Samiuddin Jing-long Li Muhammad Taimoor Mohammad Nouman Siddiqui Sumair Uddin Siddiqui Jiang-tao Xiong | 2021 | Defence Technology(防务技术)2021，17，4： | 5 |
| 5 | Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation显示文摘The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this study.The dense and dilute phases are considered to comprise of two types of particles differing in size and/or density.Governing equations and the stability condition are then formulated and solved by using an optimization numerical scheme.The effects of bubble diameter are first investigated and a suitable bubble diameter correlation is chosen.Preliminary validation for steady state behavior shows the extended model can fairly capture the overall hydrodynamic behaviors in terms of volume fraction of bubbles and average bed voidage for both monodisperse and binary particle systems.This encourages us to integrate this model with CFD for more validations in the future. | Nouman Ahmad Yujie Tian Bona Lu Kun Hong Haifeng Wang Wei Wang | 2019 | Chinese Journal of Chemical Engineering2019，27，1： | 2 |
| 6 | Experimental study on repeatedly loaded foundation soil strengthened by wraparound geosynthetic reinforcement technique显示文摘In the recent past,the potential benefits of wraparound geosynthetic reinforcement technique for constructing the reinforced soil foundations have been reported.This paper presents the experimental study on the behaviour of model strip footing resting on sandy soil bed reinforced with geosynthetic in wraparound and planar forms under monotonic and repeated loadings.The geosynthetic layers were laid according to the reinforcement ratio to minimise the scale effect.It is found that for the same amount of reinforcement material,the wraparound reinforced model resulted in less settlement in comparison to planar reinforced models.The efficiency of wraparound reinforced model increased with the increase in load amplitude and the rate of total cumulative settlement substantially decreased with the increase in number of load cycles.The wraparound reinforced model has shown about 45% lower average total settlement in comparison to unreinforced model,while the double-layer reinforced model has about 41% lower average total settlement at the cost of approximately twice the material and 1.5 times the occupied land width ratio.Moreover,wraparound models have shown much greater stability in comparison to their counterpart models when subjected to incremental repeated loading. | Muhammad Nouman Amjad Raja Sanjay Kumar Shukla | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，4： | 2 |
| 7 | A waterborne salient ship detection method on SAR imagery显示文摘Dear editor,Synthetic aperture radar(SAR)is a powerful electro-optic sensor for maritime use regardless of impact of time and meteorological conditions.Notably,ship detection plays an important role in | MA Long CHEN Liang ZHANG XueJing CHEN He Nouman Qadeer SOOMRO | 2015 | Science China(Information Sciences)2015，58，8： | 2 |
| 8 | Comparative assessment of expression of the inhibitor of growth 1 gene (ING1) in normal and neoplastic tissnos显示文摘 | Nouman GS Angus B Lunec J | 2002 | Hybridoma2002，21，1： | 1 |
| 9 | Observed failure modes of unreinforced masonry buildings during the 2015 Hindu Kush earthquake显示文摘On 26 th October 2015, an Mw 7.5 earthquake struck northern Pakistan, with its epicenter located 45 km southwest of Jarm in the Hindu Kush region of Afghanistan. The earthquake resulted from reverse faulting at a depth of 210 km, resulting in 280 fatalities and substantial damage to some 109,123 buildings. Regional seismicity, characteristics of recorded strong motions, damage statistics, and building performance observations are presented. Earthquake damage was mostly constrained to seismic-deficient unreinforced masonry(URM) buildings. Typical failure modes included toppled minarets, partial or complete out of plane collapse of URM walls, diagonal shear cracking in piers, flexural cracking in spandrels, corner damage, pounding damage, and damage due to ground settlement. The majority of human loss resulted due to failure of URM walls and subsequent roof collapse. URM buildings located in rural hilly areas closer to the epicenter suffered more intense and frequent damage than urban URM buildings located farther away in larger cities. | Najif Ismail Nouman Khattak | 2019 | Earthquake Engineering and Engineering Vibration2019，18，2： | 1 |
| 10 | The role of cytokine in the pathogenesis or acute pancreatitis显示文摘 | Nouman J | | 0，，： | 1 |
| 11 | Down-regulation of nuclear expression of the p33ING1b inhibitor of growth protein in invasive carcinoma of the breast显示文摘 | Anderson JJ Crosier S | 2003 | J Clin Pathol2003，56，7： | 1 |
| 12 | A 56-Year-Old Male Presenting with Acute Psychosis and Acute Change in Mental Status显示文摘 | Tanveer Padder Aparna Udyawar Nouman Azhar | 2006 | Journal of Psychiatric Practice2006，12，： | 1 |
| 13 | Down- regulation of nuclear expression of the P33INGIB in- hibitor of growth protein in invasive carcinoma of the breast 显示文摘 | Nouman GS Anderson JJ Crosier S | 2003 | Journal of Clinical Pathology2003，56，7： | 1 |
| 14 | The role of the tumour suppressor p33 ING1b in human neoplasia显示文摘 | Nouman GS Anderson JJ Lunec J | 2003 | J Clin Pathol2003，56，7： | 1 |
| 15 | Downregulation of nuclear expression of the p33^ING1b inhibitor of growth protein in invasive carcinoma of the breast 显示文摘 | Nouman GS Anderson JJ Crosier S | 2003 | J Clin Pathol2003，56，7： | 1 |
| 16 | Comparative assessment of expression of the inhibitor of growth 1 gene (ING1)in normal and neoplastic tissues显示文摘 | Nouman GS Angus B Lunec J | 2002 | Hybridoma2002，21，： | 1 |
| 17 | Loss of nuclear expression of the P33^INC1b inhibitor of growth protein in childhood acute lymphoblastic leukaemia 显示文摘 | Nouman GS Anderson JJ Wood KM | 2002 | Journal of Clinical Pathology2002，55，8： | 1 |
| 18 | Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme显示文摘This paper proposes a novel method for the continuum topology optimization of transient vibration problem with maximum dynamic response constraint.An aggregated index in the form of an integral function is presented to cope with the maximum response constraint in the time domain.The density filter solid isotropic material with penalization method combined with threshold projection is developed.The sensitivities of the proposed index with respect to design variables are conducted.To reduce computational cost,the second-order Amoldi reduction(SOAR)scheme is employed in transient analysis.Influences of aggregate parameter,duration of loading period,interval time,and number of basis vectors in the SOAR scheme on the final designs are discussed through typical examples while unambiguous configuration can be achieved.Through comparison with the corresponding static response from the final designs,the optimized results clearly demonstrate that the transient effects cannot be ignored in structural topology optimization. | Kai LONG Xiaoyu YANG Nouman SAEED Ruohan TIAN Pin WEN Xuan WANG | 2021 | Frontiers of Mechanical Engineering2021，16，3： | 1 |
| 19 | Comparative assessment of expression of the inhibitor of growth 1 gene (ING1) in normal and neoplastic tissues 显示文摘 | Nouman G S Angus B Lunec J | 2002 | Hybridoma2002，21，1： | 1 |
| 20 | Nuclear to cytoplasmic compartment shift of the p33ING1b tumour suppressor protein is associated with malignancy in melanocytic lesions 显示文摘 | Nouman G S Anderson J J Mathers M E | 2002 | Histopathology2002，40，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员