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Multiple liver metastases of unknown origin:A case report

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 233-238页

作者： Ying-Jin Wang Ze-chuan Liu jian Wang Yin-Mo Yang Department of Hepatobiliary Pancreatic Surgery Peking University First HospitalBeijing 100034China Department of Interventional and Vascular Surgery Peking University First HospitalBeijing 100034China

BACKGROUND The liver is the most common site of digestive system tumor metastasis,but not all liver metastases can be traced back to the primary *** it is unusual,syphilis can impact the liver,manifesting as syphilitic hepatitis with inflammatory nodules,which might be misdiagnosed as *** SUMMARY This case report involves a 46-year-old female who developed right upper abdominal pain and intermittent low fever that persisted for more than three *** definitive diagnosis of a tumor had been made in the past decades,but signs of multiple liver metastases were recognized after a computed tomo-graphy scan without evidence of primary *** positive serological tests for syphilis and a biopsy of the liver nodules,a diagnosis of hepatic syphilis was made and confirmed with follow-up nodule reduction after anti-syphilis *** Clinicians must be aware of the possibility that syphilis can cause hepatic inflam-matory masses,especially when liver metastasis is suspected without evidence of primary lesions.A definitive diagnosis should be established in conjunction with a review of the patient’s medical history for accurate therapeutic intervention.

关键词： Syphilitic hepatitis Liver nodules Liver metastasis Treponema pallidum Case report

Study of thermal decoherence of harmonic oscillators

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原子与分子物理学报 2025年第5期42卷 108-114页

作者： LI jian ZHOU Gao-Liang YAN zheng-Xin LIU Wei WANG Zhao-Qi College of Science Xi’an University of Science and TechnologyXi’an 710054China

The thermal decoherence of harmonic oscillators is investigated *** quantum system presented here is a one-dimensional oscillator with angular frequency,which is surrounded by a thermal bath of environmental *** are various environmental oscillators with different angular frequency(below an ultraviolet cutoff).At the beginning,the quantum system is a pure state and the environmental oscillators are in thermodynamic equilibrium with *** a period,the system-environment interactions inspire significant decoherence of the quantum *** decoherence is displayed by explicit calculations of the purity and von Neumann entropy of the quantum *** is worth noting that the decoherence could be significant even in the weak coupling and low temperature case due to the large amount of environmental degrees of *** the decoherence process is inspired between the quantum system and an ordinary thermal environment here,the thermal decoherence result is quite general.

关键词： Quantum decoherence Grand canonical ensemble Oscillators

Formation of Ti-N graded bioceramic layer by DC hollow-cathode plasma nitriding

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中国有色金属学会会刊：英文版 2004年第z1期14卷 319-322页

作者： zheng chuan-lin Department of Mechanical Engineering Beijing Jiaotong University Beijing 100044 China

Ti-N graded ceramic layer was formed on titanium by using DC hollow-cathode plasma nitriding technique. The structure of Ti-N layer was analyzed using X-ray diffractometry(XRD) with Cu Kα radiation, and the microhardness( HV0.1) was measured from the surface to inner along the cross section of Ti-N layer. The results indicate that the Ti-N graded layer is composed of ε-Ti2 N, δ-TiN and α-Ti(N) phases. Mechanism discussion shows that hollow-cathode discharge can intensify gas ionization, increase current density and enhance the nitriding potential, which directly increases the thickness of the diffusion coatings compared with traditional nitriding methods.

关键词： Ti-N graded ceramic layer hollow-cathode plasma nitriding

Integrability Test and Spatiotemporal Feature of Breather-Wave to the （2＋1）-Dimensional Boussinesq Equation

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Communications in Theoretical Physics 2013年第6期59卷 719-722页

作者： LUO Hong-Ying WANG chuan-jian LIU Jun DAI zheng-De College of Mathematics and Information Science Qujing Normal University Qujing 655011 China School of Science Kunming University of Science and Technology Kunming 650031 China School of Mathematics and Statistics Yunnan University Kunming 650091 China

Painleve integrability has been tested for （2＋1）D Boussinesq equation with disturbance term using the standard WTC approach after introducing the Kruskai＇s simplification. New breather solitary solutions depending on constant equilibrium solution are obtained by using Extended Homoclinic Test Method. Moreover, the spatiotemporal feature of breather solitary wave is exhibited.

关键词： Boussinesq equation Painleve integrability extended Homoclinic test method breather wavesolution spatiotemporal feature

Application of the hybrid RANS/LES method on the hydraulic dynamic performance of centrifugal pumps

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Journal of Hydrodynamics 2019年第3期31卷 637-640页

作者： zheng-chuan Zhang Hong-xun Chen zheng Ma Qun Wei jian-wu He Hui Liu Chao Liu Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China Chinese Ship Scientific Research Center Wuxi 214082 China College of Civil Engineering and Architecture Nanchang University Nanchang 330031 China Shanghai Marine Equipment Research Institute Shanghai 200031 China

The nonlinear hybrid RANS/LES method has been developed considering the simulation efficiency and accuracy to simulate the hydraulic dynamic characteristics of the centrifugal pump. It has been proved that the nonlinear hybrid RANS/LES method could effectively capture the unsteady flow structure and pressure pulsation in 2?D centrifugal pumps. To further investigate the hydraulic dynamic performance of a redesigned 3-D-gap drainage centrifugal pump, the nonlinear hybrid RANS/LES method is employed. Both numerical simulation and experimental results show that the hydraulic performance and pressure pulsation characteristics of the 3-D-gap drainage impeller centrifugal pump are significantly enhanced.

关键词： 3-D gap drainage blades nonlinear hybrid RANS/LES method pressure pulsation

Theoretical Studies on Structural and Spectroscopic Properties of Photoelectrochemical Cell Ruthenium Sensitizers―the Derivatives of N3

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Chemical Research in Chinese Universities 2012年第4期28卷 696-702页

作者： CHEN Jie WANG jian BAI Fu-quan zheng Qing-chuan ZHANG Hong-xing State Key Laboratory of Theoretical and Computational Chemistry Institute of Theoretical ChemistryJilin UniversityChangchun 130021P.R.China

A series of dye molecules was designed ***,azoles and their derivatives were chosen as the modifying groups linking to ancillary ligands of [Ru（dcbpyH2）2（NCS）2]（N3,dcbpy=4,4＇-dicarboxy2,2＇-bipyridine;NCS=thiocyanato）.Density functional theory（DFT） based approaches were applied to exploring the electronic structures and properties of all these *** dye molecule with 1,2,4-triazole groups which exhibits a very high intensity of absorption in visible region,was ***-dependent DFT（TD-DFT） results indicate that the ancillary ligand dominates the molecular orbital（MO） energy levels and masters the absorption transition nature to a certain *** deprotonation of anchoring ligand not only affects the frontier MO energy levels but also controls the energy gaps of the highest occupied MO（HOMO） to the lowest unoccupied MO（LUMO） and LUMO to LUMO＋1 *** the gap between LUMO-LUMO＋1 is small enough,the higher efficiency of dye-sensitized solar cell（DSSC） should be expected.

关键词： Dye-sensitized solar cell Density functional theory(DFT) Frontier molecular orbital Absorption spectrum Deprotonation

PARAMETRIC IDENTIFICATION AND SENSITIVITY ANALYSIS FOR AUTONOMOUS UNDERWATER VEHICLES IN DIVING PLANE

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Journal of Hydrodynamics 2012年第5期24卷 744-751页

作者： XU Feng ZOU Zao-jian YIN jian-chuan CAO jian School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240China School of Naval Architecture Ocean and Civil Engineering and State Key Laboratory of Ocean EngineeringShanghai Jiao Tong University Shanghai 200240 China College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 China

The inherent strongly nonlinear and coupling performance of the Autonomous Underwater Vehicles （AUV）, maneuvering motion in the diving plane determines its difficulty in parametric identification. The motion parameters in diving plane are obtained by executing the Zigzag-like motion based on a mathematical model of maneuvering motion. A separate identification method is put forward for parametric identification by investigating the motion equations. Support vector machine is proposed to estimate the hydrodynamic derivatives by analyzing the data of surge, heave and pitch motions. Compared with the standard coefficients, the identified parameters show the validation of the proposed identification method. Sensitivity analysis based on numerical simulation demonstrates that poor sensitive derivative gives bad estimation results. Finally the motion simulation is implemented based on the dominant sensitive derivatives to verify the reconstructed model.

关键词： parametric identification Autonomous Underwater Vehicles (AUVs) support vector machine sensitivity analysis

Unitary Transformation in Quantum Teleportation

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Communications in Theoretical Physics 2006年第5X期46卷 857-858页

作者： WANG zheng-chuan Department of Physics Graduate School of the Chinese Academy of Sciences P.O. Box 4588 Beijing 100049 China

In the well-known treatment of quantum teleportation, the receiver should convert the state of his EPR particle into the replica of the unknown quantum state by one of four possible unitary transformations. However, the importance of these unitary transformations must be emphasized. We will show in this paper that the receiver cannot transform the state of his particle into an exact replica of the unknown state which the sender wants to transfer if he has not a proper implementation of these unitary transformations. In the procedure of converting state, the inevitable coupling between EPR particle and environment which is needed by the implementation of unitary transformations will reduce the accuracy of the replica.

关键词： quantum telepertation EPR particle unitary transformation

Changes in intrinsic excitability of ganglion cells in degenerated retinas of RCS rats

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International Journal of Ophthalmology(English edition) 2018年第5期11卷 756-765页

作者： Yi-Ming Ren chuan-Huang Weng Cong-jian Zhao zheng-Qin Yin Southwest Hospital/Southwest Eye Hospital Third Military Medical University (Army Medical University) Key Lab of Visual Damage and Regeneration & Restoration of ChongqingChongqing 400038 China

AIM：To evaluate the intrinsic excitability of retinal ganglion cells（RGCs） in degenerated ***：The intrinsic excitability of various morphologically defined RGC types using a combination of patch-clamp recording and the Lucifer yellow tracer in retinal wholemount preparations harvested from Royal College of Surgeons（RCS） rats,a common retinitis pigmentosa（RP） model,in a relatively late stage of retinal degeneration（P90） were *** parameters of RGC morphologies and action potentials（APs） were measured and compared to those of non-dystrophic control rats,including dendritic stratification,dendritic field diameter,peak amplitude,half width,resting membrane potential,AP threshold,depolarization to threshold,and firing ***：Compared with non-dystrophic control RGCs,more depolarizations were required to reach the AP threshold in RCS RGCs with low spontaneous spike rates and in RCS OFF cells（especially A2o cells）,and RCS RGCs maintained their dendritic morphologies,resting membrane potentials and capabilities to generate ***：RGCs are relatively well preserved morphologically and functionally,and some cells are more susceptible to decreased excitability during retinal *** findings provide valuable considerations for optimizing RP therapeutic strategies.

关键词： retinal degeneration ganglion cell intrinsicexc itability patch clamp