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Chance and challenge of associating liver partition and portal vein ligation for staged hepatectomy

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Hepatobiliary & Pancreatic Diseases International 2019年第3期18卷 214-222页

作者： fei xiang Ze-Min Hu Department of General Surgery Jiangning Hospital of Nanjing Medical University Nanjing 211100 China Department of General Surgery Zhongshan People’s Hospital Zhongshan 528403 China

Background: The associating liver partition and portal vein ligation for staged hepatectomy(ALPPS) was first performed in 2007. The critical patient selection, timing to perform the second stage operation, and minimally invasive technique are three key factors for patient outcomes. The aim of this review is to summarize published data on these three aspects. Data sources: Studies were identified by searching Pub Med for articles published from January 2007 to October 2018, using the keywords “associating liver partition and portal vein ligation for staged hepatectomy” or “ALPPS” or “in situ split”. Studies on colorectal liver metastasis(CRLM), perihilar cholangiocarcinoma(PHC), and hepatocellular carcinoma(HCC) indicated for ALPPS, cutoff values to determine the timing of stage 2, as well as modifications of ALPPS were included. Results: The mortality of ALPPS for CRLM is declining, for PHC is high. In patients with HCC, essential hypertrophy makes the ALPPS safer. However, the degrees of fibrosis affect the hypertrophy. The future liver remnant volume is still the gold standard to start the second stage. Hepatobiliary scintigraphy plays an important role in quantitatively assessing liver function, whereas cutoff values need to be further calibrated. Less-invasive ALPPS modifications have increased and led to a decreased mortality. Conclusions: ALLPS improved the CRLM outcomes;ALPPS is feasible in patients with PHC after failure of portal vein embolization;ALPPS may be an option for HCC patients with major vascular invasion and thrombosis. The simplified and less-invasive ALPPS is the trend.

关键词： Hepatectomy Liver regeneration Portal vein Colorectal liver metastasis Hepatocellular carcinoma Perihilar cholangiocarcinoma

Disk evolution of the M87’s nucleus observed in 2008

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Research in Astronomy and Astrophysics 2020年第7期20卷 103-111页

作者： fei xiang Cheng Cheng Department of Astronomy Yunnan UniversityKunming 650091China Chinese Academy of Sciences South America Center for Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

We report the discovery of year-scale X-ray variation in the nuclear region of the M87 by reanalyze the eight Chandra observations from 2007 to 2008. The X-ray spectra are fitted and decomposed into disk and flaring components. This year-scale X-ray variability can be explained quite well by a simple clumpy accretion model. We conclude that the central super-massive black hole of M87 was accreting a cloud of ~ 0.5 M⊙at that time.

关键词： galaxies:active X-ray:individual:M87

Exergy analysis of operation process of district heating systems

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Journal of Central South University 2017年第7期24卷 1663-1670页

作者： JIE Peng-fei KONG xiang-fei LI Jing School of Mechanical Engineering Beijing Institute of Petrochemical TechnologyBeijing 102617China School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China China Environmental Resources Technology Co. LtdBeijing 100012China

The nature of the exergy consumption of district heating(DH) systems can not be explained clearly using the first law of *** analysis method was used.A case study based on a DH system in Inner Mongolia,China,was carried *** impact of operating parameters and design parameters on the energy quality of circulating water and exergy losses of DH systems during heat distribution was *** show that the energy quality of circulating water and exergy losses of DH systems during heat distribution could be reduced by decreasing the indoor temperature or increasing radiator *** with other factors,the outdoor temperature and indoor temperature have a greater impact on the energy quality of circulating water,exergy losses of circulating water,and total exergy losses during heat *** the outdoor temperature varied by 10.00%,the average variation rates of such parameters were 85.12%,90.02%,and 64.60%,*** the outdoor temperature was 273.00 K and indoor temperature varied by 50.00%,the average variation rates of such parameters were 83.88%,99.34% and 32.87%,*** can be observed that the energy quality and exergy losses of DH systems can be reduced in the operation process.

关键词： energy quality coefficient exergy loss rate design parameters operating parameters energy conservation measures

Apert syndrome diagnosed by prenatal ultrasound combined with magnetic resonance imaging and whole exome sequencing:A case report

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World Journal of Clinical Cases 2021年第4期9卷 912-918页

作者： Lei Chen fei-xiang Huang Ultrasonography Department Hangzhou Women’s HospitalHangzhou 310008Zhejiang ProvinceChina Department of Traditional Chinese Medicine Hangzhou Women’s HospitalHangzhou 310008Zhejiang ProvinceChina

BACKGROUND Most cases of Apert syndrome(AS)are found after *** of AS diagnosed by ultrasound combined with magnetic resonance imaging(MRI)and whole exome sequencing(WES)during pregnancy are *** SUMMARY We present the case of a 34-year old female patient(gravida 2,para 1)whose fetus was diagnosed with AS during *** ultrasound performed at 30,2/7 wk of pregnancy showed *** and three-dimensional ultrasound performed at 31,1/7 wk of pregnancy showed the possibility of *** examination and core family WES were conducted at 31,5/7 wk of *** results showed that FGFR2 in the fetus had a c.755C>G missense mutation in its nucleotide,and AS was *** This case highlights the importance of imaging *** ultrasound combined with MRI can identify fetal morphological abnormalities accurately,which can be confirmed by WES.

关键词： Apert syndrome Prenatal ultrasound Magnetic resonance imaging Whole exome sequencing FGFR2 Case report

Application of Immune Algorithm to Evaluation of Soil Resource Quality

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Pedosphere 2005年第5期15卷 660-668页

作者： YANG Hai-Dong HU Yue-Ming DENG fei-Qi CHEN fei-xiang WANG fei College of Automation South China University of Technology Guangzhou 510640 （China） College of Information South China Agricultural University Guangzhou 510642 （China） Department of Statistics Renmin University of China Beijing 100876 （China）

Based on the geographic information system (GIS) technology, ArcInfo software was adopted to collect, process andanalyze spatial data of Guangdong Province for an evaluation of soil resource quality. The overlay analysis method wasused in combining evaluation factors of Guangdong soil resource quality to determine the evaluation units. Because ofits favorable convergent speed and its ability to search solutions, the immune algorithm was applied to the soil resourcequality evaluation model. At the same time, the evaluation results of this newly proposed method were compared to twoother methods: sum of index and fuzzy synthetic. The results indicated that the immune algorithm reflected the actualcondition of soil resource quality more exactly.

关键词： evaluation GIS immune algorithm soil resources

Orthogonal separable Hamiltonian systems on T^2

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Science China Mathematics 2007年第12期50卷 1735-1747页

作者： Cheng CHEN fei LIU xiang ZHANG Department of Mathematics Shanghai Jiaotong University Shanghai 200240 China Department of Mathematics Shanghai Jiaotong University Shanghai 200240 China Department of Mathematics Shanghai Jiaotong University Shanghai 200240 China

In this paper we characterize the Liouvillian integrable orthogonal separable Hamiltonian systems on T2 for a given metric, and prove that the Hamiltonian flow on any compact level hypersurface has zero topological entropy. Furthermore, by examples we show that the integrable Hamiltonian systems on T2 can have complicated dynamical phenomena. For instance they can have several families of invariant tori, each family is bounded by the homoclinic-loop-like cylinders and heteroclinic-loop-like cylinders. As we know, it is the first concrete example to present the families of invariant tori at the same time appearing in such a complicated way.

关键词： Hamiltonian system, Liouvillian integrability, orthogonal separable, Riemannian metric, dynamics, entropy

A Quenched Study for QCD Phase-Transition on Anisotropic Lattices

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Communications in Theoretical Physics 2009年第10期52卷 665-670页

作者： MENG xiang-fei CHEN Ying LIU Yu-Bin School of Physics Nankai University Tianjin 300071 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Theoretical Center for Science Facilities Chinese Academy of Sciences Beijing 100049 China

The QCD deconfinement phase transition in pure SU（3） gauge theory is studied on an anlsotropic lattice. The critical temperature is determined to be Tc ≈ 285 MeV. The relation between the deconfinement phase transi... 详细信息

关键词： phase-transition critical temperature anisotropic lattice

Multivariate Rational Response Surface Approximation of Nodal Displacements of Truss Structures

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Chinese Journal of Mechanical Engineering 2018年第1期31卷 100-113页

作者： Shan Chai xiang-fei Ji Li-Jun Li Ming Guo School of Transportation and Vehicle Engineering Shandong University of Technology Key Laboratory of Electronic Equipment Structure Design Xidian University Shandong Linglong Tire Co. Ltd.

Polynomial-basis response surface method has some shortcomings for truss structures in structural optimization,concluding the low fitting accuracy and the great computational effort. Based on the theory of approximation, a response surface method based on Multivariate Rational Function basis(MRRSM) is proposed. In order to further reduce the computational workload of MRRSM, focusing on the law between the cross-sectional area and the nodal displacements of truss structure, a conjecture that the determinant of the stiffness matrix and the corresponding elements of adjoint matrix involved in displacement determination are polynomials with the same order as their respective matrices, each term of which is the product of cross-sectional areas, is proposed. The conjecture is proved theoretically for statically determinate truss structure, and is shown corrected by a large number of statically indeterminate truss structures. The theoretical analysis and a large number of numerical examples show that MRRSM has a high fitting accuracy and less computational effort. Efficiency of the structural optimization of truss structures would be enhanced.

关键词： Multivariate rational function Response surfaces method Truss structures Structure optimization

Current Status of Natural Products from Plants as Anti-herpes Simplex Virus 1 Agents

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Virologica Sinica 2008年第5期23卷 305-314页

作者： Yang-fei xiang Ying PEI Yi-fei WANG Biomedicine Research ＆ Development Center Jinan University Guangzhou 510630 China

Nucleoside analogues have been the mainstay of clinical treatment of herpes simplex virus 1 (HSV-1) infections since their development. However, the emergence of drug resistant strains has underlined the urgency of the discovery of novel anti-HSV-1 drugs. Natural products, which provided many novel drug leads, are known to be an important source of anti-HSV-1 agents. Herein, we present an overview of natural products with anti-HSV-1 activities isolated from a variety of plants reported in recent years. Several different compounds, mainly belonging to the three groups of polysaccharides, polyphenols and terpenes, showed antiviral effects against HSV-1, indicating their potential to be promising anti-HSV-1 agents.

关键词： Herpes simplex virus 1 (HSV-1) Antiviral Anti-HSV-1 Natural product