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Defect-modulated synthesis and optoelectronic properties in chemical vapor deposited CsPbBr_(3) microplates

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Nano Research 2024年第5期17卷 4610-4615页

作者： Yanan Bao Hengshan Wang Meiqi An Huayi Tang Jing Li Jianliang Li Conghui Tan Yingmin Luo jiao xu Yiming Yang School of Microelectronics Dalian University of TechnologyDalian 116024China Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)School of PhysicsDalian University of TechnologyDalian 116024China

The remarkable optoelectronic features of halide perovskite promote their potential applications in semiconductor devices beyond solar cells,which require high-quality single crystals with controlled defect ***,we investigated the synthesis mechanism of chemical vapor deposited single-crystalline all-inorganic perovskite microplates(MPs),and reported a defect-modulated photocurrent which is closely related to the growth sequence of the *** MP synthesis initiates from island-like nano-disks,and subsequently transits to a layer-by-layer fashion,resulting in a defect-rich area at the center of the *** elevated temperatures,these central defects may be thermally activated and become highly mobile,leading to photoluminescence quenching and degression of local and overall optoelectronic attributes,as evidenced by the spatial resolved optical and electrical scanning probe ***,this work shines light on the formation,proliferation and dynamics of defects in perovskites,and offers guidance for preparation of high-quality perovskites micro-crystals for functional semiconductor devices with high temperature stability.

关键词： halide perovskites nanomaterials optoelectronics scanning photocurrent microscope chemical vapor deposition

Young patient with a giant gastric bronchogenic cyst:A case report and review of literature

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World Journal of Clinical Cases 2024年第13期12卷 2254-2262页

作者： xu-Ren Lu xu-Guang jiao Qi-Hang Sun Bo-Wen Li Qing-Shun Zhu Guang-xu Zhu Jian-Jun Qu School of Clinical Medicine Shandong Second Medical UniversityWeifang 261000Shandong ProvinceChina Department of Gastrointestinal Surgery Medical Center The First Affiliated HospitalShandong Second Medical UniversityWeifang 261000Shandong ProvinceChina

BACKGROUND Gastric bronchogenic cysts(BCs)are extremely rare cystic masses caused by abnormal development of the respiratory system during the embryonic *** bronchial cysts are rare lesions that were first reported in 1956;as of 2023,only 33 cases are available in the PubMed online *** usually have no clinical symptoms in the early stage,and imaging findings also lack ***,they are difficult to diagnose before histopathological *** SUMMARY A 34-year-old woman with respiratory distress presented at our *** ultrasound revealed an anechoic mass between the spleen,left kidney and gastric fundus,with hyperechogenic and soft elastography textures and with a size of approximately 6.5 cm×4.0 ***,a computed tomography scan demonstrated high density between the posterior stomach and the spleen and the left kidney,with uniform internal density and a small amount of *** maximum cross section was approximately 10.1 cm×6.1 cm,and the possibility of a cyst was *** the imaging findings did not suggest a malignancy and because the patient required complete resection,she underwent laparotomy ***,this cystic lesion was found to be located in the posterior wall of the large curvature of the fundus and was approximately 8 cm×6 cm in ***,the pathologists verified that the cyst in the fundus was a gastric *** patient recovered well,her symptoms of chest tightness disappeared,and the abdominal drain was removed on postoperative day 6,after which she was discharged on day 7 for 6 months of *** had no tumor recurrence or postoperative complications during the *** This is a valuable report as it describes an extremely rare case of gastric ***,this was a very young patient with a large BC in the stomach.

关键词： Bronchogenic cyst Stomach Endoscopic ultrasound-guided fine needle aspiration Endosonography Case report

Relationship between Phenotypic Changes of Dendritic Cell Subsets and the Onset of Plateau Phase during Intermittent Interferon Therapy in Patients with CHB

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Biomedical and Environmental Sciences 2024年第3期37卷 303-314页

作者： YANG Liu WANG Shi Yu JIANG Ting Ting DENG Wen CHANG Min WU Shu Ling CAO Wei Hua LU Yao SHEN Ge LIU Ru Yu GAO Yuan jiao xu Meng jiao HU Lei Ping ZHANG Lu XIE Yao LI Ming Hui Department of Hepatology Division 2 Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Center for Infectious Diseases Second Affiliated Hospital of Air Force Medical UniversityXi'an 710038ShaanxiChina Department of Hepatology Division 2 Peking University Ditan Teaching HospitalBeijing 100015China

Objective This study aimed to evaluate whether the onset of the plateau phase of slow hepatitis B surface antigen decline in patients with chronic hepatitis B treated with intermittent interferon therapy is related to the frequency of dendritic cell subsets and expression of the costimulatory molecules CD40,CD80,CD83,and *** This was a cross-sectional study in which patients were divided into a natural history group(namely NH group),a long-term oral nucleoside analogs treatment group(namely NA group),and a plateau-arriving group(namely P group).The percentage of plasmacytoid dendritic cell and myeloid dendritic cell subsets in peripheral blood lymphocytes and monocytes and the mean fluorescence intensity of their surface costimulatory molecules were detected using a flow *** In total,143 patients were enrolled(NH group,n=49;NA group,n=47;P group,n=47).The results demonstrated that CD141/CD1c double negative myeloid dendritic cell(DNmDC)/lymphocytes and monocytes(%)in P group(0.041[0.024,0.069])was significantly lower than that in NH group(0.270[0.135,0.407])and NA group(0.273[0.150,0.443]),and CD86 mean fluorescence intensity of DNmDCs in P group(1832.0[1484.0,2793.0])was significantly lower than that in NH group(4316.0[2958.0,5169.0])and NA group(3299.0[2534.0,4371.0]),Adjusted P all<*** Reduced DNmDCs and impaired maturation may be associated with the onset of the plateau phase during intermittent interferon therapy in patients with chronic hepatitis B.

关键词： CHB Dendritic Cells Intermittent Interferon Therapy Plateau Phase

Effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients

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Pharmacology & Pharmacy 2024年第2期15卷 15-26页

作者： Jiaxin Lin Hui Yang Shaofen Chen jiao xu Department of Anesthesiology The Eighth Affiliated Hospital Sun Yat-sen University Shenzhen China

Objective: To determine the effect of flurbiprofen combined with prednisolone on interleukin-6 in elderly surgery patients. Methods: In this double-blind randomized controlled study, patients aged 65 to 80 who were undergoing spinal fusion surgery for disc herniation were administered flurbiprofen 100 mg (P group, flurbiprofen group), prednisolone 0.6 mg/kg (D group, prednisolone group), prednisolone 0.6 mg/kg plus flurbiprofen 100 mg (P + D group, flurbiprofen + prednisolone group) or normal saline (S group, saline group) 15 minutes before the induction of anesthesia. Plasma samples were collected before surgery (T0) and on day 1 (T1), day 2 (T2) and day 3 (T3) following surgery. At the same time, systemic inflammatory response syndrome (SIRS) was assessed by SIRS criteria. The levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α) and C-reactive protein (CRP) for collected samples were measured. Results: Other groups had significantly lower levels of IL-6, CRP and occurrence of SIRS than S group (p 0.05). Conclusion: Compared to prednisolone or flurbiprofen, combining flurbiprofen with prednisolone in elderly surgery patients led to an increased suppression of IL-6.

关键词： SIRS Systemic Inflammatory Response Syndrome IL-6 Interleukin-6 CRP C-Reactive Protein

Association of Cytokines with Clinical Indicators in Patients with Drug-Induced Liver Injury

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Biomedical and Environmental Sciences 2024年第5期37卷 494-502页

作者： CAO Wei Hua JIANG Ting Ting SHEN Ge DENG Wen WANG Shi Yu ZHANG Zi Yu LI Xin Xin LU Yao ZHANG Lu LIU Ru Yu CHANG Min WU Shu Ling GAO Yuan jiao HAO Hong Xiao CHEN Xiao xue HU Lei Ping xu Meng jiao YI Wei XIE Yao LI Ming Hui Department of Hepatology Division 2 Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China Department of Hepatology Division 2 Peking University Ditan Teaching HospitalBeijing 100015China Department of Gynecology and Obstetrics Beijing Ditan HospitalCapital Medical UniversityBeijing 100015China

Objective To explore characteristics of clinical parameters and cytokines in patients with drug-induced liver injury(DILI)caused by different drugs and their correlation with clinical *** The study was conducted on patients who were up to Review of Uncertainties in Confidence Assessment for Medical Tests(RUCAM)scoring criteria and clinically diagnosed with *** on Chinese herbal medicine,cardiovascular drugs,non-steroidal anti-inflammatory drugs(NSAIDs),antiinfective drugs,and other drugs,patients were divided into five *** were measured by Luminex *** characteristics of clinical biochemical indicators and cytokines in DILI patients and their correlation were *** 73 patients were *** among five groups was statistically different(P=0.032).Alanine aminotransferase(ALT)(P=0.033)and aspartate aminotransferase(AST)(P=0.007)in NSAIDs group were higher than those in chinese herbal medicine ***-6(IL-6)and tumor necrosis factor alpha(TNF-α)in patients with Chinese herbal medicine(IL-6:P<0.001;TNF-α:P<0.001)and cardiovascular medicine(IL-6:P=0.020;TNF-α:P=0.001)were lower than those in NSAIDs *** was a positive correlation between ALT(r=0.697,P=0.025),AST(r=0.721,P=0.019),and IL-6 in NSAIDs *** Older age may be more prone to *** with NSAIDs have more severe liver damage in early stages of DILI,TNF-αand IL-6 may partake the inflammatory process of DILI.

关键词： Drug-induced liver injury Cytokines Non-steroidal anti-inflammatory drugs Inflammation

Characterization of 2 μm band soliton optical comb based on silicon nitride microcavity

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JOURNAL OF INFRARED AND MILLIMETER WAVES 2024年第4期43卷 442-449页

作者： Cheng, Ru-Min Sun, Jia-Hao Wu, Jia-Gui Guo, Deng-Ji xu, jiao Yang, Jun-Bo Yan, Pei-Guang Shenzhen Univ Sch Phys & Optoelect Ergineering Shenzhen Key Lab Laser Engn Shenzhen 518060 Peoples R China Southwest Univ Sch Phys Sci & Technol Chongqing 400715 Peoples R China Coll Mechatron & Control Engn Inst Semicond Mfg Res Shenzhen 518060 Peoples R China Natl Univ Def Technol Coll Sci Changsha 410015 Peoples R China

The optical frequency comb (OFC) generation of 2 mu m silicon nitride microcavity is investigated. Dispersion modulation of silicon nitride waveguides is carried out by geometrical design. Appropriate bus waveguide dimensions are selected, and the thermal refraction noise of silicon nitride microcavities at different modulation frequencies is discussed by the thermal absorption theory. The nonlinear Schrodinger equation is used as the basic model to study the evolution of the cavity under different dispersion effects. The numerical results show that silicon nitride is able to observe the hysteretic state transition of the system, i. e. , the relaxation oscillation phenomenon during the transition of the system to the stable domain, more clearly in the 2 mu m band. At the same time, the cavity is able to transition to the steady state soliton faster under the action of higher-order dispersion, which provides a scheme to study the respiratory soliton.

关键词： optical frequency combs dispersion modulation thermorefractive noise breathe soliton FREQUENCY GENERATION SI3N4

泊松-逆伽玛分布假设下的GAMLSS回归模型

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数理统计与管理 2024年第3期43卷 423-436页

作者：徐娇马江洪长安大学理学院陕西西安710064

计数数据大量出现在医学、社会学、心理学、保险和交通等领域,是一类十分重要的数据类型。不过,计数数据常出现过度分散现象,使得普通的泊松回归模型无法解释,从而失去效用。本文研究一类混合泊松分布,专门用于拟合这种过度分散的计数... 详细信息

计数数据大量出现在医学、社会学、心理学、保险和交通等领域,是一类十分重要的数据类型。不过,计数数据常出现过度分散现象,使得普通的泊松回归模型无法解释,从而失去效用。本文研究一类混合泊松分布,专门用于拟合这种过度分散的计数数据。主要工作是基于现有的泊松-广义逆高斯分布、泊松-倒逆高斯分布和泊松-逆伽玛分布等三类混合泊松分布,利用广义可加模型(GAMLSS)的灵活性,构建泊松-逆伽玛分布假设下的GAMLSS模型。为验证模型性能,本文还将泊松-逆伽玛、泊松-倒逆高斯和负二项分布假设下的GAMLSS模型应用于车险索赔频率数据,并根据全局偏差、AIC和BIC等准则评估模型。结果表明,本文模型对过度分散的车险索赔频率数据的拟合明显优于负二项、泊松-倒逆高斯分布假设下的GAMLSS模型,是一个处理过度分散计数数据的有效模型。

关键词：混合泊松分布过度分散泊松-逆伽玛分布 GAMLSS模型车险索赔频率

指向“儿童创想家”成长的课程框架及其实施理路

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中国教育学刊 2024年第6期 34-38,102页

作者：姚君丹徐姣庄薇江苏省常州市武进区东龙实验小学江苏常州213161 江苏省常州市武进区东龙实验小学综合办江苏常州213161 江苏省常州市武进区东龙实验小学课程部江苏常州213161

儿童创想课程是在学校创想理念指引下,以国家课程为基础,以校本课程为补充的学校课程的整体建构。课程体系的建构中,用整体育人的视野,厘定创想课程的内涵范畴,形成创想课程的价值坐标,用系统建构的思维规划、用实践育人的思路建构创想... 详细信息

儿童创想课程是在学校创想理念指引下,以国家课程为基础,以校本课程为补充的学校课程的整体建构。课程体系的建构中,用整体育人的视野,厘定创想课程的内涵范畴,形成创想课程的价值坐标,用系统建构的思维规划、用实践育人的思路建构创想课程。由此,学校课程从单科突进走向复合式的课程群,从规定式的课程走向融合式的课程,从书本的静态知识到动手动脑的实践课程。

关键词：创想课程整体育人实践育人

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基于单片机的高铁货物车厢环境监控装置设计

现代信息科技 2024年第15期8卷 19-23,27页

作者：胥姣兰州交通大学交通运输学院甘肃兰州730070

为实现对高铁货物运输车厢中时效类货物存储环境的监测与控制,研究了一套基于51单片机的高铁货物车厢环境监控装置,实现了对高铁货物运输车厢的环境变化因素进行实时监测、控制,并通过显示屏将所获取的信息反馈给工作人员。工作人员可... 详细信息

为实现对高铁货物运输车厢中时效类货物存储环境的监测与控制,研究了一套基于51单片机的高铁货物车厢环境监控装置,实现了对高铁货物运输车厢的环境变化因素进行实时监测、控制,并通过显示屏将所获取的信息反馈给工作人员。工作人员可以根据所要运输的货物种类提前预设该类货物所需存储环境的适宜范围,运输途中一旦所监测的车厢环境超过预设区间系统装置便会自主触发蜂鸣报警器,随后通过单片机驱动温湿度、气体传感器等硬件设备进行调整调控,以便为时效类货物提供最佳的存储环境,保障时效类货物的质量安全。

关键词：高铁货物车厢智能监控单片机温湿度气体质量安全