检索结果-南通市图书馆

Primary myelofibrosis with thrombophilia as first symptom combined with thalassemia and Gilbert syndrome:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2022年第13期10卷 4161-4170页

作者： Guzailinuer Wufuer Kaisaer Wufuer Tu Ba tao Cui Ling tao Ling Fu ming mao ming-Hui Duan Department of Hematology People's Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830001Xinjiang Uygur Autonomous RegionChina Department of Thoracic Surgery The Eighth Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830001Xinjiang Uygur Autonomous RegionChina Department of Pathology People's Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830001Xinjiang Uygur Autonomous RegionChina Department of Radiology People's Hospital of Xinjiang Uygur Autonomous RegionUrumqi 830001Xinjiang Uygur Autonomous RegionChina Department of Hematology Peking Union Medical College HospitalBeijing 100730China

BACKGROUND A 46-year-old Han man first had sigmoid sinus and transverse sinus venous thrombosis at the age of *** the age of 44,he once again developed *** testing showed heterozygous SERPINC1 mutation,bone marrow biopsy showed fibrosis grade 1(MF-1),and JAK2 V617F mutation was positive,accompanied by UGT1A1 mutation andβ-thalassemia gene *** SUMMARY A 46-year-old Han man was first found to have sigmoid sinus and transverse sinus venous thrombosis at the age of 42 but had no individual or family thrombosis history,and he had been regularly taking warfarin anticoagulant therapy for a long period of *** the age of 44,venous thrombosis reappeared in parts of the intrahepatic vein,main portal vein,splenic vein,and superior mesenteric vein,and his spleen was obviously *** had a history of jaundice for many years,and genetic testing revealed that he carried a heterozygous SERPINC1 *** marrow biopsy showed multifocal fibrous tissue hyperplasia among trabeculae and focal *** was positive for the JAK2 V617F *** the same time,UGT1A1 andβ-thalassemia gene mutations existed,and a SERPINC1 mutation and UGT1A1 mutation were both found in his *** The patient in this case had thrombophilia as the primary symptom,JAK2V617-positive myeloproliferative neoplasm(MPN)was the main potential cause,and hereditary AT-III deficiency may have been one of multiple secondary *** remains to be determined whether UGT1A1 andβ-thalassemia gene mutations are related to ***,the clinical features of MPN in this patient were hidden,and the relevant clinical features of coexisting thalassemia and hereditary Gilbert syndrome,reported here for the first time domestically and abroad,were complicating factors,causing great difficulties for a clear ***,when thrombophilia has been determined,it is necessary to screen the relevant latent problems *** the clinical features cannot be perfect

关键词： Thrombophilia Prefibrotic myelofibrosis Negative family thrombosis history Case report

Application of material-mesh algebraic collapsing acceleration technique in method of characteristics——based neutron transport code

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2021年第8期32卷 95-109页

作者： ming Dai mao-Song Cheng Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China CAS Innovative Academies in TMSR Energy System Chinese Academy of SciencesShanghai 201800China

The algebraic collapsing acceleration(ACA)technique maximizes the use of geometric flexibility of the method of characteristics(MOC).The spatial grids for loworder ACA are the same as the high-order transport,which makes the numerical solution of ACA equations costly,especially for large-size *** speed-up the MOC transport iterations effectively for general geometry,a coarse-mesh ACA method that involves selectively merging fine-mesh cells with identical materials,called material-mesh ACA(MMACA),is *** energy group batching(EGB)strategy in the tracing process is proposed to increase the parallel efficiency for microscopic crosssection *** and macroscopic crosssection benchmark problems are used to validate and analyse the accuracy and efficiency of the MMACA *** maximum errors in the multiplication factor and pin power distributions are from the VERA-4 B-2 D case with silver-indium-cadmium(AIC)control rods inserted and are 104 pcm and 1.97%,*** with the single-thread ACA solution,the maximum speed-up ratio reached 25 on 12 CPU cores for microscopic cross-section VERA-4-2 D *** the C5 G7-2 D and LRA-2 D benchmarks,the MMACA method can reduce the computation time by approximately one *** present work proposes the MMACA method and demonstrates its ability to effectively accelerate MOC transport iterations.

关键词： Algebraic collapsing acceleration Material-mesh ACA Method of characteristics OpenMP Arbitrary geometry

Heat Storage Performance of PCM in a Novel Vertical Pointer-Shaped Finned Latent Heat Tank

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2024年第2期33卷 422-434页

作者： mao Qianjun ZHU Yuanyuan LI tao School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The heat storage performance of latent heat storage systems is not good due to the poor thermal conductivity of phase change *** this paper,a new type of pointer-shaped fins combining rectangular and triangular fins has been employed to numerically simulate the melting process in the heat storage tank,and the fin geometry parameter effects on heat storage performance have been *** results indicate that compared with the bare tube and the rectangular finned tank,the melting time of the phase change material in the pointer-shaped finned tank is reduced by 64.2%and 15.1%,*** closer the tip of the triangular fin is to the hot wall,the better the heat transfer *** optimal height of the triangular fin is about 8 *** the number of fins from 4 to 6 and from 6 to 8 reduces the melting time by 16.0%and 16.7%***,increasing the number of fins from 8 to 10 only reduces the melting time by 8.4%.When the fin dimensionless length is increased from 0.3 to 0.5 and from 0.5 to 0.7,the melting time is shortened by 17.5%and 13.0%.But the melting time is only reduced by 2.9%when the dimensionless fin length is increased from 0.7 to *** optimising the design of the thermal storage system,the results can provide a reference value.

关键词： thermal energy storage phase change material pointer-shaped fins heat storage performance

Comparative investigation on the heat transfer performance of an energy storage system with a spiral tube and straight tube:An experimental approach

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2023年第1期66卷 71-85页

作者： mao QianJun CAO Yan LI tao School of Urban Construction Wuhan University of Science and TechnologyWuhan 430065China

Latent heat thermal energy storage systems can effectively fill the gap between energy storage and application, and phase-change materials(PCMs) are crucial media for storing thermal energy. Therefore, how to maximize the utilization efficiency of PCMs has attracted widespread attention. In this study, the thermal behavior of two thermal storage units employing a spiral tube and straight tube as heat transfer tubes was experimentally researched and comprehensively compared. Stefan numbers were used to investigate the impact of the heat transfer fluid temperature on the PCM melting process. The temperature distribution of PCMs,temporal evolution of the melting front, and temperature variations of measurement points in both tanks were compared. The average temperature and energy storage of PCMs were calculated to evaluate the thermal performance of different configurations. The results indicate that compared to cylinder B(with a straight tube), the energy storage in cylinder A(with a spiral tube)increased by 78.8%, 38.5%, and 19.6% at Stefan numbers of 1.08, 1.28, and 1.48, respectively. Moreover, the increase in the Stefan number simultaneously ascended the average temperature and energy storage of PCMs in containers A and B, causing the shortening of the melting time. When the Stefan number was increased from 1.28 to 1.48, the storage capacity was raised from3233.18 to 3463.8 k J, and the total melting time was decreased by 34.2% from 547.5 to 360 min after the PCM was loaded in cylinder A. The research results lay a certain foundation for a deeper study of enhanced heat transfer in spiral tubes.

关键词： thermal energy storage visualization experiment PCM spiral tube straight tube

Enhancing the performance of future wireless networks with software-defined networking

在线全文

学校读者我要写书评

暂无评论

Frontiers of Information Technology & Electronic Engineering 2016年第7期17卷 606-619页

作者： mingjie FENG Shiwen mao tao JIANG Department of Electrical & Computer Engineering Auburn University School of Electronics & Information Engineering Huazhong University of Science & Technology

To provide ubiquitous Internet access under the explosive increase of applications and data traffic,the current network architecture has become highly heterogeneous and complex,making network management a challenging *** this end,software-defined networking(SDN) has been proposed as a promising *** the SDN architecture,the control plane and the data plane are decoupled,and the network infrastructures are abstracted and managed by a centralized *** SDN,efficient and flexible network control can be achieved,which potentially enhances network *** harvest the benefits of SDN in wireless networks,the software-defined wireless network(SDWN) architecture has been recently *** this paper,we first analyze the applications of SDN to different types of wireless *** then discuss several important technical aspects of performance enhancement in SDN-based wireless ***,we present possible future research directions of SDWN.

关键词： Software-defined networking(SDN) Software-defined wireless networks(SDWN) Open Flow Performance enhancement

High-precision deformation monitoring algorithm for GBSAR system: rail determination phase error compensation

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2016年第8期59卷 204-219页

作者： Cheng HU mao ZHU tao ZENG Weiming TIAN Cong mao Beijing Key Laboratory of Embedded Real-time Information Processing Technology Beijing Institute of Technology

In recent years, the repeat-pass GBSAR(ground based synthetic aperture radar) system has demonstrated its capacity to acquire deformation. Nevertheless, in a variety of applications, it needs to measure the deformation with the precision up to 0.1 mm, which could not be reached by utilizing the traditional PS(permanent scatterer) algorithm in most cases. Generally, one of the main reasons could be summarized into the phase error caused by the rail determination error, because the precision of rail determination might degrade during long working hours. However, the traditional PS algorithm could not compensate for the phase error caused by the rail determination error. In order to solve the problems, we modify the conventional PS ***, we deduced the transformation relationship between the rail determination error and its corresponding interferometric phase error. Then, the phase errors caused by the atmosphere and the rail determination error were jointly compensated. The experimental data, which were obtained in Fangshan District in Beijing(China), were used to test and verify the performance of the new algorithm. After the comparison between the results processed by the new algorithm and those processed by the traditional algorithm, the proposed method demonstrated its ability to obtain high-precision deformation.

关键词： permanent scatterer(PS) synthetic aperture radar(SAR) ground-based SAR deformation monitoring radar

The 30–60-day Intraseasonal Variability of Sea Surface Temperature in the South China Sea during May–September

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Advances in Atmospheric Sciences 2018年第5期35卷 550-566页

作者： Jiangyu mao ming WANG LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China University of Chinese Academy of Sciences Beijing 100049 China

This study investigates the structure and propagation of intraseasonal sea surface temperature（SST） variability in the South China Sea（SCS） on the 30-60-day timescale during boreal summer（May-September）. TRMM-based SST, GODAS oceanic reanalysis and ERA-Interim atmospheric reanalysis datasets from 1998 to 2013 are used to examine quantitatively the atmospheric thermodynamic and oceanic dynamic mechanisms responsible for its formation. Power spectra show that the 30-60-day SST variability is predominant, accounting for 60% of the variance of the 10-90-day variability over most of the SCS. Composite analyses demonstrate that the 30-60-day SST variability is characterized by the alternate occurrence of basin-wide positive and negative SST anomalies in the SCS, with positive（negative） SST anomalies accompanied by anomalous northeasterlies（southwesterlies）. The transition and expansion of SST anomalies are driven by the monsoonal trough-ridge seesaw pattern that migrates northward from the equator to the northern SCS. Quantitative diagnosis of the composite mixed-layer heat budgets shows that, within a strong 30-60-day cycle, the atmospheric thermal forcing is indeed a dominant factor, with the mixed-layer net heat flux（MNHF） contributing around 60% of the total SST tendency, while vertical entrainment contributes more than 30%. However, the entrainment-induced SST tendency is sometimes as large as the MNHF-induced component, implying that ocean processes are sometimes as important as surface fluxes in generating the30-60-day SST variability in the SCS.

关键词： sea surface temperature 30-60-day intraseasonal variability South China Sea vertical entrainment

Optimal distributed resource allocation in a wireless sensor network for control systems

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 106-112页

作者： mao Jian-lin WU Zhi-ming Department of Automation Shanghai Jiao Tong University Shanghai 200240 China School of Information Engineering and Automation Kunming University of Science and Technology Kunming 650093 China

Wireless technology is applied increasingly in networked control systems. A new form of wireless network called wireless sensor network can bring control systems some advantages, such as flexibility and feasibility of network deployment at low costs, while it also raises some new challenges. First, the communication resources shared by all the control loops are limited. Second, the wireless and multi-hop character of sensor network makes the resources scheduling more difficult. Thus, how to effectively allocate the limited communication resources for those control loops is an important problem. In this paper, this problem is formulated as an optimal sampling frequency assignment problem, where the objective function is to maximize the utility of control systems, subject to channel capacity constraints. Then an iterative distributed algorithm based on local buffer information is proposed. Finally, the simulation results show that the proposed algorithm can effectively allocate the limited communication resource in a distributed way. It can achieve the optimal quality of the control system and adapt to the network load changes.

关键词： Wireless sensor networks (WSN) Distributed resource allocation Control systems Optimization.

Non-Fourier heat conduction in a thin gold film heated by an ultra-fast-laser

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2015年第4期58卷 638-649页

作者： mao Yu Dong XU ming Tian Department of Engineering Mechanics School of Civil Engineering Shandong University School of Energy and Power Engineering Shandong University

Based on the dual-phase-lagging(DPL)heat conduction model,the Cattaneo-Vernotte(CV)model and the improved CV model we investigate the one-dimensional heat conduction in gold films with nano-scale thickness exposed to an ultra-fast laser *** influence of system parameters on the temperature field is *** find that for all the non-Fourier heat conduction models considered in this work,a larger Knudsen number normally leads to a higher *** the DPL model,the large ratio of the phase lag of temperature gradient to the phase lag of heat flux reduces the maximum temperature and shortens the time for the system to reach its steady *** CV model and the improved CV model lead to the similar thermal wave behavior of the temperature field,but the thermal wave speeds for these two models are different,especially for large Knudsen *** the phase lag of temperature gradient is smaller,the difference between the DPL model and the improved CV model is not significant,but for the large phase lag of temperature gradient the difference becomes quite significant,especially for the large Knudsen *** addition,the effect of the surface accommodation coefficient,which is a parameter in the slip boundary condition,on the temperature field of the gold film heated by ultra-fast laser pulses is investigated based on the DPL model.

关键词： Nano-scale heat conduction ultrafast laser heating thin film Knudsen number