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Unicentric Castleman disease was misdiagnosed as pancreatic mass:A case report

World Journal of Clinical Cases 2022年第4期10卷 1278-1285页

作者： hong-yan zhai Xin-Yuan Zhu Gui-Ming Zhou Li Zhu Dan-Dan Guo Hao Zhang Department of Ultrasound Tianjin Medical University General HospitalTianjin 300005China Department of Cardivascular Tianjin Medical University General HospitalTianjin 300005China Department of Cardivascular Surgery Tianjin Medical University General HospitalTianjin 300005China

BACKGROUND Castleman’s disease(CD)is a lymphatic proliferative disorder of unknown cause and is rarely seen *** has been divided into unicentric and multicentric *** CD(UCD)occurs as a solitary enlarged mass and mediastinal lymph nodes are the most common *** excision has proven to be curative for *** CD(MCD)appears as a systemic disease with peripheral *** had a poor response to surgery and monoclonal antibodies with rituximab have become a research *** SUMMARY A 44-year-old woman presented with a pancreatic mass during routine physical *** had no obvious symptoms,such as fever,abdominal pain,abdominal distension,or *** examination indicated a hypoechoic mass between the body of the pancreas,left lobe of the liver and *** had a clear boundary,irregular shape,uneven echo,and no obvious blood flow *** clarify the diagnosis,contrast-enhanced ultrasound examination was performed,which showed a benign pancreatic *** or solid pseudopapillary tumor was a possible *** patient underwent further contrast-enhanced computed tomography and contrastenhanced magnetic resonance imaging,which were suggestive of solid pseudopapillary tumor or neuroendocrine *** the examinations failed to give a definitive diagnosis,and the patient underwent *** final pathological and immunohistochemical results showed that the mass was *** This case highlights when lymphadenopathy is encountered clinically,CD should be considered and a biopsy should be performed.

关键词： Castleman’s disease Lymphadenopathy Unicentric Multicentric Contrastenhanced ultrasound Case report

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Studies of Self-assembled Monolayers Formed by Imidazofine on Iron Surface by SEM and SECM

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Chinese Chemical Letters 2006年第12期17卷 1615-1618页

作者： Xiu Yu LIU Shen Hao CHEN Shuai MIAO Su Xiang WU Li Xia SHEN Yuan Xing CAI hong yan zhai Deoartment of Chemistry Shandong University Jinan 250100 State Key Laboratory for Corrosion and Protection Shenyang 110015 Shandong Academy of Sciences Jinan 250014

The self-assembled monolayers （SAMs） of imidazoline （IM） on the iron surface were characterized by scanning electron microscope （SEM） and scanning electrochemical microscopy （SECM）. The results showed that SAM... 详细信息

关键词： Imidazoline self-assembled monolayers (SAMs) SEM SECM.

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Sex differences in human pre-gastrulation embryos

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Science China(Life Sciences) 2025年第2期68卷 397-415页

作者： Yongjie Lu Meng Qin Xintong Qi Ming yang Fan zhai Jiaqi Zhang Zhiqiang yan Liying yan Jie Qiao Peng Yuan State Key Laboratory of Female Fertility Promotion Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijing 100191China National Clinical Research Center for Obstetrics and Gynecology(Peking University Third Hospital) Beijing 100191China Key Laboratory of Assisted Reproduction(Peking University) Ministry of EducationBeijing 100191China Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology Beijing 100191China Academy for Advanced Interdisciplinary Studies Peking UniversityBeijing 100871China

Human fetuses exhibit notable sex differences in growth rate and response to the intrauterine environment,yet their origins and underlying mechanisms remain ***,we conduct a detailed investigation of sex differences in human pre-gastrulation *** lower methylation and incomplete inactivation of the X chromosome in females,as well as the sex-specific cell-cell communication patterns,contribute to sex-differential *** trophectoderm is more inclined toward syncytiotrophoblast differentiation and exhibits a stronger hormone secretion capacity,while female trophectoderm tends to retain cytotrophoblast program with stronger mitochondrial function as well as higher vasculogenesis and immunotolerance *** primitive endoderm initiates the anterior visceral endoderm transcriptional program earlier than *** cell cycle activities of the epiblast and primitive endoderm are higher in males compared to females,while the situation is opposite in the *** conclusion,our study provides in-depth insights into the sex differences in human pre-gastrulation embryos and contributes to unraveling the origins of the sex differences in human fetal development.

关键词： human embryo sex difference trophectoderm primitive endoderm epiblast

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Antibiotic exposure alters the honeybee gut microbiota and may interfere with the honeybee behavioral caste transition

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Insect Science 2025年第1期32卷 260-276页

作者： Zijing Zhang Xiaohuan Mu Qina Cao Yifan zhai Li Zheng yan Liu Hao Zheng Xue Zhang Hebei Key Laboratory of Animal Physiology Biochemistry and Molecular BiologyHebei Collaborative Innovation Center for Eco-EnvironmentCollege of Life SciencesHebei Normal UniversityShijiazhuangChina College of Food Science and Nutritional Engineering China Agricultural UniversityBejingChina Institute of Plant Protection Shandong Academy of Agricultural SciencesJinanChina Key Laboratory of Natural Enemies Insects Ministry of Agriculture and Rural AffairsJinanChina Department of Entomology College of Plant ProtectionChina AgriculturalUniversityBeijingChina

Behavioral division is essential for the sustainability and reproduction of honeybee *** accumulating evidence has documented that antibiotic exposure interferes with bee behavioral divisions,how the gut microbiome,host physiology,and genetic regulation are implicated in this process remains ***,by constructing single-cohort colonies,we validated that the gut microbiota varied in composition between age-matched nurse and forager *** the gut microbiota with a low dose of antibiotic retained the gut bacterial size,but the structure of the microbial community continuously diverged from the control group after antibiotic *** foragers were observed in the antibiotic groups in the field experiment.A combinatorial effect of decreased gut metabolic gene repertoires,reduced brain neurotransmitter titers,and downregulated brain immune genes could potentially be related to behavioral tasks transition *** work indicates that the disturbance to both the gut microbiome and host physiologies after antibiotic exposure may have implications on social behavior development,highlighting the need for further research focusing on antibiotic pollution threatening the honeybee population's health.

关键词： antibiotic resistance Apis mellifera behavioral development immune genes

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Failure mechanisms of AlGaN/GaN HEMTs irradiated by high-energy heavy ions with and without bias

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Nuclear Science and Techniques 2025年第1期36卷 49-58页

作者： Pei-Pei Hu Li-Jun Xu Sheng-Xia Zhang Peng-Fei zhai Ling Lv Xiao-Yu yan Zong-Zhen Li yan-Rong Cao Xue-Feng Zheng Jian Zeng Yuan He Jie Liu Institute of Modern Physics Chinese Academy of Sciences(CAS)Lanzhou 730000China Key Laboratory of Wide Band‑gap Semiconductor Materials Ministry of EducationXidian UniversityXi’an 710071China University of Chinese Academy of Sciences(UCAS) Beijing 100049China

Gallium nitride(GaN)-based devices have significant potential for space ***,the mechanisms of radiation damage to the device,particularly from strong ionizing radiation,remains *** study investigates the effects of radiation on p-gate AlGaN/GaN high-electron-mobility transistors(HEMTs).Under a high voltage,the HEMT leakage current increased sharply and was accompanied by a rapid increase in power density that caused"thermal burnout"of the *** addition,a burnout signature appeared on the surface of the burned devices,proving that a single-event burnout effect ***,degradation,including an increase in the on-resistance and a decrease in the breakdown voltage,was observed in devices irradiated with high-energy heavy ions and without *** latent tracks induced by heavy ions penetrated the heterojunction interface and extended into the GaN ***,a new type of N_(2)bubble defect was discovered inside the tracks using Fresnel *** accumulation of N_(2)bubbles in the heterojunction and buffer layers is more likely to cause leakage and *** study indicates that electrical stress accelerates the failure rate and that improving heat dissipation is an effective reinforcement method for GaN-based devices.

关键词： GaN HEMTs Heavy ions Single-event burnout Latent tracks Degradation

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Realization of robust Ohmic contact for semiconducting black arsenic by coupling with graphene

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Chinese Physics B 2025年第2期34卷 425-429页

作者： Xinjuan Cheng Xuechao zhai Department of Applied Physics and MIIT Key Laboratory of Semiconductor Microstructures and Quantum SensingNanjing University of Science and TechnologyNanjing 210094China

Ohmic contacts are fundamental components in semiconductor technology,facilitating efficient electrical connection and excellent device *** employ first-principles calculations to show that semimetallic graphene is a natural Ohmic contact partner of monolayer semiconducting black arsenic(BAs),for which the top of the valence band is below the Fermi energy of the order of 10~2 *** Ohmic contact arises from the giant Stark effect induced by van der Waals electron transfer from BAs to graphene,which does not destroy their respective band ***,we show that this intrinsic Ohmic contact remains robust across a wide range of interlayer distances(adjustable by strain)or vertical electric fields,whereas the weak spin splitting of the order of 1 meV induced by symmetry breaking plays little part in Ohmic *** findings reveal the potential applications of graphene–BAs in ultralow dissipation transistors.

关键词： semiconductor technology Ohmic contact heterobilayer Stark effect

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From earthquake resistance structure to earthquake resilience city–urban seismic resilience assessment

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Earthquake Engineering and Engineering Vibration 2025年第1期24卷 1-13页

作者： Xie Lili Zhao Yonggang Wen Weiping zhai Changhai Key lab of Structures Dynamic Behaviour and Control of the Ministry of Education Harbin Institute of TechnologyHarbin 150090China Key lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology Harbin Institute of TechnologyHarbin 150090China Institute of Engineering Mechanics China Earthquake AdministrationHarbin 150080China

Earthquakes pose significant perils to the built environment in urban *** avert the calamitous aftermath of earthquakes,it is imperative to construct seismic resilient *** to the intricacy of the concept of urban seismic resilience(USR),its assessment is a large-scale system engineering *** assessment of USR should be based on the notion of urban seismic capacity(USC)assessment,which includes casualties,economic loss,and recovery time as *** loss is also included in the assessment of USR in addition to these *** assessment indicator system comprising five dimensions(building and lifeline infrastructure,environment,society,economy,and institution)and 20 indicators has been devised to quantify *** analytical hierarchy process(AHP)is utilized to compute the weights of the criteria,dimensions,and indicators in the urban seismic resilience assessment(USRA)indicator *** the necessary data for a city are obtainable,the seismic resilience of that city can be assessed using this *** illustrate the proposed methodology,a moderate-sized city in China was selected as a case *** assessment results indicate a high level of USR,suggesting that the city possesses strong capabilities to withstand and recover from potential future earthquakes.

关键词： urban seismic capacity urban seismic resilience assessment analytic hierarchy process functionality loss

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Phononic Resonant Relaxation in Magnetic Hysteresis of Single-Molecule Magnets

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Chinese Physics Letters 2025年第2期42卷 109-124页

作者： Lei Gu Jia Luo Qiancheng Luo Yuanqi zhai yan-Zhen Zheng Guoping Zhao College of Physics and Electronic Engineering Sichuan Normal UniversityChengdu 610068China Frontier Institute of Science and Technology(FIST) Xi’an Jiaotong UniversityXi’an 710054China Center for Magnetism and Spintronics Sichuan Normal UniversityChengdu 610068China

Lanthanide-based single-molecule magnets exhibit broad magnetic hysteresis,which manifests as slow magnetic relaxation in strong magnetic ***,the origin of the nontrivial hysteresis behaviors remains ***,we propose two influential mechanisms:activation of optical-phonon-mediated direct transitions within the ground-state doublet and the resonant Raman *** discoveries,coupled with the g-factor anisotropy,account for the observed hysteresis behaviors in the regimes of fast magnetic *** findings complement the recognized mechanisms used to interpret the magnetic hysteresis of single-molecule magnets.

关键词： process. hysteresis magnets

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前节OCT在内眼术后角膜后弹力层脱离诊治中的应用

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国际眼科杂志 2020年第4期20卷 733-735页

作者：翟红艳陆颖丽沈秀广安徽省亳州市人民医院眼科 236800

目的:探讨前节OCT(AS-OCT)在内眼术后角膜后弹力层脱离诊治中的临床应用价值。方法:回顾性分析2016-06/2019-04我院眼科行内眼术后发生角膜水肿的患者21例23眼,均采用AS-OCT检查观察角膜水肿程度及角膜后弹力层脱离情况。对于轻度及以... 详细信息

目的:探讨前节OCT(AS-OCT)在内眼术后角膜后弹力层脱离诊治中的临床应用价值。方法:回顾性分析2016-06/2019-04我院眼科行内眼术后发生角膜水肿的患者21例23眼,均采用AS-OCT检查观察角膜水肿程度及角膜后弹力层脱离情况。对于轻度及以上角膜后弹力层脱离者应用前房注气法复位,余角膜水肿者予以药物保守治疗,随访观察角膜水肿及后弹力层贴附情况。结果:本研究纳入患者21例23眼内眼术后均有不同程度角膜水肿,14眼角膜后弹力层脱离,其中11眼轻度及以上角膜后弹力层脱离予以前房注气后1d复查AS-OCT,10眼后弹力层贴附良好,1眼贴附欠佳,再次注气后贴附良好。随诊1mo,所有患者角膜均恢复透明,视力恢复良好。结论:AS-OCT能够及时、准确诊断和评估角膜后弹力层脱离及其治疗效果。

关键词：眼前节OCT 角膜水肿角膜后弹力层脱离内眼手术前房注气

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Mesoscopic fracture damage evolution and fractal damage constitutive model of heat-treated red sandstone under direct tensile impact loadings

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Journal of Rock Mechanics and Geotechnical Engineering 2025年第1期17卷 323-340页

作者： Shi Liu Yu Jia Yue zhai Shaoxu Hao School of Mechanics and Construction Engineering Jinan UniversityGuangzhou510632China School of Geology Engineering and Geomatics Chang'an UniversityXi'an710064China

Understanding the mesoscopic tensile fracture damage of rock is the basis of evaluating the deterioration process of mechanical properties of heat-damaged rock. For this, tensile tests of rocks under high-temperature treatment were conducted with a ϕ75 mm split Hopkinson tension bar (SHTB) to investigate the mesoscopic fracture and damage properties of rock. An improved scanning electron microscopy (SEM) experimental method was used to analyze the tensile fracture surfaces of rock samples. Qualitative and quantitative analyses were performed to assess evolution of mesoscopic damage of heat-damaged rock under tensile loading. A constitutive model describing the mesoscopic fractal damage under thermo-mechanical coupling was established. The results showed that the high temperatures significantly reduced the tensile strength and fracture surface roughness of the red sandstone. The three-dimensional (3D) reconstruction of the fracture surface of the samples that experienced tensile failure at 900 °C showed a flat surface. The standard deviation of elevation and slope angle of specimen fracture surface first increased and then decreased with increasing temperature. The threshold for brittle fracture of the heat-damaged red sandstone specimens was 600 °C. Beyond this threshold temperature, local ductile fracture occurred, resulting in plastic deformation of the fracture surface during tensile fracturing. With increase of temperature, the internal meso-structure of samples was strengthened slightly at first and then deteriorated gradually, which was consistent with the change of macroscopic mechanical properties of red sandstone. The mesoscopic characteristics, such as the number, mean side length, maximum area, porosity, and fractal dimension of crack, exhibited an initial decline, followed by a gradual increase. The development of microcracks in samples had significant influence on mesoscopic fractal dimension. The mesoscopic fractal characteristics were used to establis

关键词： High temperature rock mechanics Dynamic direct tension Red sandstone Mesoscopic fracture mechanism Fractal damage constitutive model

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