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Laparoscopic liver resection utilizing the ventral avascular area of the inferior vena cava:A retrospective cohort study

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World Journal of Gastroenterology 2025年第1期31卷 42-57页

作者： Kun huang Zhu Chen Heng Xiao Hai-Yang hu Xing-Yu Chen Cheng-You Du Xiang Lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400000China Department of General Surgery Mianyang Hospital of Traditional Chinese MedicineMianyang 621000Sichuan ProvinceChina

BACKGROUND Laparoscopic liver resection(LLR)can be challenging due to the difficulty of establishing a retrohepatic tunnel under *** the third hepatic hilum before parenchymal transection often leads to significant liver mobilization,tumor compression,and bleeding from the short hepatic veins(SHVs).This study introduces a novel technique utilizing the ventral avascular area of the inferior vena cava(IVC),allowing SHVs to be addressed after parenchymal transection,thereby reducing surgical complexity and improving outcomes in in situ *** To introduce and evaluate a novel LLR technique using the ventral avascular area of the IVC and compare its short-term outcomes with conventional *** The clinical cohort data of patients with pathologically confirmed hepatocellular carcinoma or intrahepatic cholangiocarcinoma who underwent conventional LLR and novel LLR between July 2021 and July 2023 at the First Affiliated Hospital of Chongqing Medical University were retrospectively *** novel LLR,we initially separated the caudate lobe from the IVC using dissecting forceps along the ventral avascular area of the ***,we transected the parenchyma of the left and right caudate lobes from the caudal side to the cephalic side using the avascular area as a ***,we addressed the SHVs and finally dissected the root of the right hepatic vein or left hepatic *** short-term postoperative outcomes and oncological results of the two approaches were evaluated and *** A total of 256 patients were included,with 150(58.59%)undergoing conventional LLR and 106(41.41%)undergoing novel *** novel technique resulted in significantly larger tumor resections(6.47±2.96 cm vs 4.01±2.33 cm,P<0.001),shorter operative times(199.57±60.37 minutes vs 262.33±83.90 minutes,P<0.001),less intraoperative blood loss(206.92±37.09 mL vs 363.34±131.27 mL,P<0.001),and greater resection volume(345.11±31.40 mL vs 264.38±31.98 mL,P<0.001)comp

关键词： Laparoscopic liver resection Inferior vena cava Retrohepatic tunnel Short hepatic veins Complex liver tumors Intraoperative bleeding control

Distributed adaptive Kalman filter based on variational Bayesian technique

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Control Theory and Technology 2019年第1期17卷 37-47页

作者： Chen hu Xiaoming hu Yiguang hong Rocket Force University of Engineering Xi'an Shannxi 710025 China epartment of Mathematics Royal Institute of Sweden (KTH) Sweden Institute of Systems Science and University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 700790 China

In this paper, distributed Kalman filter design is studied for linear dynamics with unknown measurement noise variance, which modeled by Wishart distribution. To solve the problem in a multi-agent network, a distributed adaptive Kalman filter is proposed with the help of variational Bayesian, where the posterior distribution of joint state and noise variance is approximated by a free-form distribution. The con vergence of the proposed algorithm is proved in two main steps: n oise statistics is estimated, where each age nt only use its local information in variational Bayesian expectation (VB-E) step, and state is estimated by a consensus algorithm in variational Bayesian maximum (VB-M) step. Finally, a distributed target tracking problem is investigated with simulations for illustration.

关键词： Distributed Kalman filter adaptive filter multi-agent system variational Bayesian

Load-adaptive frequency reuse scheme for inter-cell interference coordination in relay networks

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The Journal of China Universities of Posts and Telecommunications 2010年第5期17卷 38-43页

作者： CHEN mu-qiong JI hong LI Xi School of Information and Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

Cellular relay networks adopting orthogonal frequency division multiple （OFDM） technology has been widely accepted for next generation wireless communication due to its advantage in enlarging coverage scale as well as improving data *** order to improve the performance of user equipments （UEs） near the cell edge,especially to avoid the interference from inter-cell and intra cell,an enhanced soft frequency reuse scheme is adopted in this paper to assure inter-cell interference coordination （ICIC）.Compared with traditional frequency allocation work,the proposed scheme is interference-aware and load-adaptive,which dynamically assigns available frequency among UEs under certain schedule method in variable traffic load condition and mitigates interference using information provided by interference *** can improve signal-to-interference plus noise ratio （SINR） of the UE in each sub channel thus enable the system achieve better throughput and blocking probability *** results prove that the proposed scheme may achieve desirable performance on throughput,blocking probability and spectral utilization in the sector under different traffic load compared with other schemes.

关键词： relay frequency reuse interference coordination resource allocation

Meso-Scale Modeling for Effective Properties in Continuous Fiber-Reinforced Composites by State-Based Peridynamics

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Acta Mechanica Solida Sinica 2021年第5期34卷 729-742页

作者： Xiang Li Yin Yu Zhongcheng mu Y.L.hu Aerospace Structure Research Center School of Aeronautics and AstronauticsShanghai Jiao Tong UniversityShanghai200240China School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai200240China

This study demonstrates a homogenization approach via a modified state-based peridynamic(PD)method to predict the effective elastic properties of composite materials with periodic *** procedure of modeling the PD unit cell(UC)of continuous fiber-reinforced composite is *** boundary conditions are derived and implemented through the Lagrange multiplier method.A matrix-dominated approach for modeling the interphase properties between dissimilar materials is *** periodicity and continuity assumptions are employed to determine the stress and strain fields,as well as the effective elastic *** PD-UCs of square and hexagonal packs as well as the 0/90 laminate microstructure are modeled and compared with the analytical,numerical and experimental results from the *** agreement of predicted effective properties can be *** other PD homogenization approaches,the effective material properties can be directly and individually obtained from simple loading conditions.

关键词： State-based peridynamics Composites Meso-scale Unit Cell Homogenization

Influence of Twinning Texture on the Corrosion Fatigue Behavior of Extruded Magnesium Alloys

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Acta Metallurgica Sinica(English Letters) 2021年第1期34卷 65-76页

作者： Jiaqi hu Qite Li hong Gao School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072China

Bio-magnesium alloys have received great attention due to their degradability and *** fatigue failure is a huge challenge in vivo for bio-magnesium alloy *** the eff ects of twinning textures on the corrosion fatigue of magnesium alloys is meaningful for the *** the current study,pre-compression strains of 2%and 4%were carried out on extruded *** effects of twinning texture on the corrosion performance and corrosion fatigue resistance were *** hydrogen evolution tests indicated that twinning texture enhanced the corrosion resistance of longitudinal cross section by improving uniformity of surface *** results of corrosion fatigue tests indicated that the differences in mechanical damage caused by twinning texture dominated the corrosion fatigue behavior under high stress *** secondary cracks of surface deteriorated the corrosion fatigue resistance of the original specimens under low stress *** compact corrosion film and the re-passivation of matrix suppressed the hydrogen induced cracking,thereby improving the corrosion fatigue resistance of the pre-compression specimens.

关键词： Magnesium alloy Corrosion fatigue Extension twins Secondary crack

Weak cosmic censorship conjecture in the nonlinear electrodynamics black hole under the charged scalar field

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Communications in Theoretical Physics 2020年第1期72卷 89-95页

作者： Tianhao Bai Wei hong Benrong mu Jun Tao Center for Theoretical Physics College of PhysicsSichuan UniversityChengdu610065China Physics Teaching and Research Section College of Medical TechnologyChengdu University of Traditional Chinese MedicineChengdu 611137China

In this paper,we study the thermodynamics and the weak cosmic censorship conjecture of the nonlinear electrodynamics black hole under the scattering of a charged complex scalar *** to the energy and charge fluxes of the scalar field,the variations of this black hole’s energy and charge can be calculated during an infinitesimal time *** scalar field scattering,the variation of the black hole is calculated in the extended and normal phase *** the normal phase space,the cosmological constant and the normalization parameter are fixed,and the first and second laws of thermodynamics can also be *** the extended phase space,the cosmological constant and the normalization parameter are considered as thermodynamic variables,and the first law of thermodynamics is valid,but the second law of thermodynamics is not ***,the weak cosmic censorship conjecture is both valid in the extended and normal phase spaces.

关键词： nonlinear electrodynamics black hole weak cosmic censorship conjecture complex scalar field thermodynamics

Generalized Tweakable Even-Mansour Cipher and Its Applications

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Journal of Computer Science & Technology 2018年第6期33卷 1261-1277页

作者： Ping Zhang hong-Gang hu Key Laboratory of Electromagnetic Space Information Chinese Academy of Sciences Hefei 230027 China School of Information Science and Technology University of Science and Technology of China Hefei 230027 China

This paper describes a generalized tweakable blockcipher HPH （Hash-Permutation-Hash）, which is based ona public random permutation P and a family of almost-XOR-universal hash functions H={HK}K∈κ as a tweak and keyschedule, and defined as y = HPHK（（t1, t2）, x） = P（x HK（t1）） HK（t2）, where K is a key randomly chosen from a keyspace/C, （tl, t2） is a tweak chosen from a valid tweak space T, x is a plaintext, and y is a ciphertext. We prove that HPHis a secure strong tweakable pseudorandom permutation （STPRP） by using H-coefficients technique. Then we focus on thesecurity of HPH against multi-key and related-key attacks. We prove that HPH achieves both multi-key STPRP security andrelated-key STPRP security. HPH can be extended to wide applications. It can be directly applied to authentication andauthenticated encryption modes. We apply HPH to PMAC1 and OPP, provide an improved authentication mode HPMACand a new authenticated encryption mode OPH, and prove that the two modes achieve single-key security, multi-key security,and related-key security.

关键词： tweakable blockcipher H-coefficients technique authentication authenticated encryption provable security

Remote Detection of Varying Water Storage in Relation to Surfacial Temperature of Aral Sea

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Chinese Geographical Science 2019年第5期29卷 741-755页

作者： mu Guangyi CHEN Li hu Liangjun SONG Kaishan Key Laboratory for Vegetation Ecology Science Ministry of EducationNortheast Normal UniversityChangchun130024China Jilin Provincial museum of Nature Northeast Normal UniversityChangchun130117China Northeast Institute of Geography andAgroecology Chinese Academy of SciencesChangchun130102China

Lake monitoring by remote sensing is of significant importance to understanding the lake and ambient ecological and environmental processes. In particular, whether lake water storage variation could predict lake surfacial temperature or vice versa has long fascinated the research community, in that it would greatly benefit the monitoring missions and scientific interpretation of the lake change processes. This study attempted to remotely detect the dynamics of the Aral Sea and pursue the relationships between varying lake water storage attributes and surface water temperature by using MODIS LST(Moderate-resolution Imaging Spectroradiometer Land Surface Temperature) 8-day composite products, satellite altimeter data, and actual meteorological measurements. Their associations with lake Surface Water Temperatures(SWT) were then analyzed. Results showed the lake water surface areas and elevations of the North Aral Sea tended to increasing trend from 2001(2793.0 km^2, 13.6 m) to 2015(6997.8 km^2, 15.9 m), while those of the South Aral Sea showed a decreasing trend during 2001(20 434.6 km^2, 3.9 m) and 2015(3256.1 km^2, 0.9 m). In addition, the annual daytime and nighttime lake SWT both decreased in the North Aral Sea, while only the daytime SWT in the South Aral Sea exhibited an increase, indicating a rising deviation of diurnal temperatures in the South Aral Sea during the past 15 yr. Moreover, a lower correlation was found between variations in the daytime SWT and storage capacity in the South Aral Sea(R^2 = 0.33;P human activities may overlap to explain complex co

关键词： Surface Water Temperature(SWT) lake water surface dynamics lake water storage Moderate-resolution Imaging Spectroradiometer(MODIS) the Aral Sea

Pan-cancer analysis of DNA epigenetic modifications by hydrophilic interaction liquid chromatography-tandem mass spectrometry

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Chinese Chemical Letters 2023年第7期34卷 214-218页

作者： Yiqiu hu Xiujuan hong Zhijun Yuan Jiayi mu Xiaoxiao Zhang Zhihao Fang Ying Yuan Shu Zheng Cheng Guo Cancer Institute(Key Laboratory of Cancer Prevention and Intervention China National Ministry of Education)The Second Affiliated HospitalZhejiang UniversitySchool of MedicineHangzhou310009China Cancer Center Zhejiang UniversityHangzhou 310058China

Accumulating evidence in recent years indicates that DNA methylation(5-methyl-2-deoxycytidine,5-mdC) and hydroxymethylation(5-hydroxymethyl-2-deoxycytidine, 5-hmd C) have been implicated in various biological processes, and the aberrations of these DNA cytosine modifications is tightly associated with cancer. N6-methyl-2-deoxyadenosine(m~6dA), as a newly discovered epigenetic modification in genome of mammals, has been demonstrated to play vital regulatory roles in tumorigenesis. However, the content information of m~6dA in human tumor tissues is still limited and pan-cancer analysis of these DNA epigenetic modifications is lacked. Herein, we developed a sensitive and robust stable isotopediluted hydrophilic interaction liquid chromatography-tandem mass spectrometry(HILIC-MS/MS) method for accurate quantification of m~6dA, 5-mdC and 5-hmdC in genomic DNA from 82 pairs of human tumor tissues and matched tumor-adjacent normal tissues. The types of tumors included esophagus cancer, lung cancer, breast cancer, liver cancer, pancreatic cancer, gastric cancer, stromal tumor and colorectal *** to the normal tissues, we revealed the level of m6dA was increased in tumor tissues of esophagus cancer, lung cancer and liver cancer, whereas the level of m~6dA was diminished in tumor tissues of pancreatic cancer and gastric cancer;while the contents of 5-mdC and 5-hmdC exhibited significant decrease in tumor tissues of most types of cancer. It is worth noting that we revealed, for the first time,the content of genomic m~6dA in pancreatic cancer, stromal tumor and colorectal cancer. The significant changes of these DNA epigenetic modifications indicate they may serve as indicators of cancers. In addition, this study will benefit for better understanding of the regulatory roles of these DNA epigenetic modifications in cancers.

关键词： HILIC-MS/MS Pan-cancer analysis N~6-methyl-2-deoxyadenosine 5-Methyl-2-deoxycytidine 5-Hydroxymethyl-2-deoxycytidine