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Research Progress and Prospects of Magnetic Nanomaterials

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Expert Review of Chinese Chemical

Expert Review of Chinese Chemical 2024年第1期2卷 5-8页

作者： jia Xu Jingming Li jun Shi College of Resources Environment and Materials ScienceGuangxi University

Nanomaterials are one of the research and development hotspots in the field of cutting-edge new materials,and also an important strategic emerging *** nanomaterials have broad application prospects in fields such as chemical engineering,new materials,electronic information,and *** article introduces the application progress and preparation methods of magnetic nanomaterials,and puts forward suggestions for further optimizing the preparation process of magnetic nanomaterials and developing new magnetic materials with better performance.

关键词： magnetism nano materials application preparation expectation

Estrogen receptor beta treats Alzheimer's disease

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Neural Regeneration Research 2013年第5期8卷 420-426页

作者： zhu Tian jia Fan Yang Zhao Sheng Bi Lihui Si Qun Liu Department of Neurology the First Hospital of Jilin University Department of Neurology the Second Hospital of Jilin University Department of Obstetrics and Gynecology the Second Hospital of Jilin University

In vitro studies have shown that estrogen receptor β can attenuate the cytotoxic effect of amyloid protein on PC12 cells through the Akt pathway without estrogen stimulation. In this study, we aimed to observe the effect of estrogen receptor β in Alzheimer＇s disease rat models established by intraventricular injection of amyloid β protein. Estrogen receptor β lentiviral particles delivered via intraventricular injection increased Akt content in the hippocampus, decreased interleukin-1β mRNA tumor necrosis factor a mRNA and amyloid β protein levels in the hippocampus, and improved the learning and memory capacities in AIzheimer＇s disease rats. Estrogen receptor β short hairpin RNA lentiviral particles delivered via intraventricular injection had none of the above impacts on AIzheimer＇s disease rats. These experimental findings indicate that estrogen receptor β, independent from estrogen, can reduce inflammatory reactions and amyloid β deposition in the hJppocampus of AIzheimer＇s disease rats, and improve learning and memory capacities. This effect may be mediated through activation of the Akt pathway.

关键词： neural regeneration neurodegenerative diseases estrogen estrogen receptor β Alzheimer's disease amyloid β protein inflammatory cytokines Akt signaling pathway cognition neural protection photographs-containing paper neuroregeneration

脉冲电流频率对预制缺陷TC4钛合金性能的影响

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稀有金属材料与工程 2019年第8期48卷 2655-2660页

作者：李细锋贾国朋姜军陈军上海交通大学

为了研究脉冲电流频率对预制缺陷TC4钛合金组织性能的影响规律,首先采用室温预拉伸制备含孔洞缺陷的TC4试样,然后选取不同频率的脉冲电流对预制缺陷的TC4试样进行通电处理,对比通电前后板材内部的显微孔洞和基体组织的变化情况,并对处... 详细信息

为了研究脉冲电流频率对预制缺陷TC4钛合金组织性能的影响规律,首先采用室温预拉伸制备含孔洞缺陷的TC4试样,然后选取不同频率的脉冲电流对预制缺陷的TC4试样进行通电处理,对比通电前后板材内部的显微孔洞和基体组织的变化情况,并对处理后的试样进行二次室温拉伸获得力学性能参数。结果表明:当脉冲电流频率从0 Hz升至140 Hz时,TC4内部孔洞体积分数由2.21%下降至0.86%,屈服强度由916.7 MPa提高到990.9 MPa,抗拉强度由951.2MPa增加至997.5 MPa,延伸率提高1.65倍;当脉冲电流频率从140 Hz提高到160 Hz时,内部孔洞体积分数反而增至1.99%,屈服强度和抗拉强度则分别下降到975.1和988.5MPa,延伸率降低了37.70%。显微孔洞体积分数几乎决定了预制缺陷TC4钛合金的力学性能。

关键词： TC4钛合金预制缺陷脉冲电流频率孔洞力学性能

Appending triphenyltriazine to 1,10-phenanthroline: a robust electron-transport material for stable organic light-emitting diodes

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Science Bulletin 2018年第7期63卷 446-451页

作者： Guang Jin jun-Zhe Liu jian-Hua Zou Xiao-Lan Huang Meng-jiao He Ling Peng Ling-Ling Chen Xu-Hui zhu junbiao Peng Yong Cao State Key Laboratory of Luminescent Materials and Devices and Institute of Polymer Optoelectronic Materials and Devices South China University of Technology (SCUT)

There has been an increasing demand for high-performance and cost-effective organic electron-transport materials for organic light-emitting diodes （OLEDs）. In this contribution, we present a simple compound 3-（3-（4,6-diphenyl-l,3,5-triazin-2-yl）phenyl）-1,10-phenanthroline through the facile Pd-catalyzed coupling of a triphenyltriazine boronic ester with 3-hromo-1,10-phenanthroline. It shows a high Tg of 112℃. The ultraviolet photoelectron spectroscopy measurements reveal a deep HOMO level of -6.5 eV. The LUMO level is derived as -3.0 eV, based on the optical bandgap. The low-temperature solid-state phosphorescent spectrum gives a triplet energy of -2.36eV. n-Doping with 8-hydroxyquinolatolithium （Liq, 1：1） leads to considerably improved electron mobility of 5.2 × 10 -6 -5.8 × 10 -5 cm2 v-1 S-1 at E=（2-5） × 10 5Vcm -1, in contrast with the triarylphosphine oxide- phenantroline molecular conjugate we reported previously. It has been shown that through optimizing the device structure and hence suppressing polaron-exciton annihilation, introducing this single Liq-doped electron-transport layer could offer high-efficiency and stable phosphorescent OLEDs.

关键词： Electron transport materials Organic light-emitting diodes Phenanthroline Device stability Triazine

Electroacupuncture Promotes Functional Recovery after Facial Nerve Injury in Rats by Regulating Autophagy via GDNF and PI3K/m TOR Signaling Pathway

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Chinese Journal of Integrative Medicine 2024年第3期30卷 251-259页

作者： YAO jun-peng FENG Xiu-mei WANG Lu LI Yan-qiu zhu Zi-yue YAN Xiang-yun YANG Yu-qing LI Ying ZHANG Wei Acupuncture and Tuina School Chengdu University of Traditional Chinese MedicineChengdu611137China Department of Rehabilitation Medicine Guanghan People’s HospitalGuanghanSichuan Province618399China Academic Affairs Office Chengdu University of Traditional Chinese MedicineChengdu611137China

Objective:To explore the mechanism of electroacupuncture(EA) in promoting recovery of the facial function with the involvement of autophagy,glial cell line-derived neurotrophic factor(GDNF),and phosphatidylinositol-3-kinase(PI3K)/mammalian target of rapamycin(mTOR) signaling ***:Seventy-two male Sprague-Dawley rats were randomly allocated into the control,sham-operated,facial nerve injury(FNI),EA,EA+3-methyladenine(3-MA),and EA+GDNF antagonist groups using a random number table,with 12 rats in each *** FNI rat model was established with facial nerve crushing *** intervention was conducted at Dicang(ST 4),jiache(ST 6),Yifeng(SJ 17),and Hegu(LI 4) acupoints for 2 *** Simone’s 10-Point Scale was utilized to monitor the recovery of facial *** histopathological evaluation of facial nerves was performed using hematoxylin-eosin(HE) *** levels of Beclin-1,light chain 3(LC3),and P62 were detected by immunohistochemistry(IHC),immunofluorescence,and reverse transcriptionpolymerase chain reaction,***,IHC was also used to detect the levels of GDNF,Rai,PI3K,and ***:The facial functional scores were significantly increased in the EA group than the FNI group(P<0.05 or P<0.01).HE staining showed nerve axons and myelin sheaths,which were destroyed immediately after the injury,were recovered with EA *** expressions of Beclin-1 and LC3 were significantly elevated and the expression of P62 was markedly reduced in FNI rats(P<0.01);however,EA treatment reversed these abnormal changes(P<0.01).Meanwhile,EA stimulation significantly increased the levels of GDNF,Rai,PI3K,and mTOR(P<0.01).After exogenous administration with autophagy inhibitor 3-MA or GDNF antagonist,the repair effect of EA on facial function was attenuated(P<0.05 or P<0.01).Conclusions:EA could promote the recovery of facial function and repair the facial nerve damages in a rat model of *** may exert this neuroreparative effect through

关键词： electroacupuncture facial nerve injury autophagy glial cell line-derived neurotrophic factor phosphatidylinositol-3-kinase/mammalian target of rapamycin Chinese medicine

Synchronous diagnosis and treatment of acute myeloid leukemia and chronic lymphocytic leukemia:Two case reports

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World Journal of Clinical Cases 2021年第30期9卷 9144-9150页

作者： Rong-Rong Chen Li-Xia zhu Lu-Lu Wang Xue-Ying Li jia-Nai Sun Mi-Xue Xie Jing-Jing zhu De Zhou jian-Hu Li Xin Huang Wan-zhuo Xie Xiu-Jin Ye Department of Hematology The First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou 310003Zhejiang ProvinceChina

BACKGROUND The concurrence of acute myeloid leukemia(AML)and chronic lymphocytic leukemia(CLL)is *** reports of such cases have focused mainly on clinical diagnosis and characteristics,so the mechanism remains unclear,and therapy options have been poorly *** SUMMARY Here,we report two cases of synchronous AML and *** cytometry revealed two distinct abnormal cell populations(myeloblasts and lymphoid cells)according to scatter ***5-positive B cell lymphoma with myeloid leukemia invasion was observed on lymph node *** regimens indicated for both AML and CLL were used in our patients,and our patients achieved complete response after ***-generation sequencing of 88 genes was *** We conclude that early mutation and dysregulation at the hematopoietic stem cell stage and the accumulation of multiple rearrangements may cause the concurrence of CLL and *** treatment of infection and combination therapy aimed at the CLL component are significant in the management of patients with concurrent CLL and AML.

关键词： Acute myeloid leukemia Chronic lymphocytic leukemia B-cell lymphoma-2 inhibitors Therapy Ten-eleven translocation-2 Case report

Temperature-dependent structure and magnetization of YCrO_(3)compound

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Chinese Physics B 2022年第4期31卷 493-499页

作者： Qian Zhao Ying-Hao zhu Si Wu jun-Chao Xia Peng-Fei Zhou Kai-Tong Sun Hai-Feng Li Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipaMacao SAR 999078China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Guangdong–Hong Kong–Macao Joint Laboratory for Neutron Scattering Science and Technology Dongguan 523803China

We have grown a YCrO_(3)single crystal by the floating-zone method and studied its temperature-dependent crystalline structure and magnetization by x-ray powder diffraction and PPMS DynaCool *** diffraction patterns were well indexed by an orthorhombic structure with space group of Pbnm(No.62).From 36 K to 300 K,no structural phase transition occurs in the pulverized YCrO_(3)single *** antiferromagnetic phase transition temperature was determined as T_(N)=141.58(5)K by the magnetization versus temperature *** found weak ferromagnetic behavior in the magnetic hysteresis loops below ***,we demonstrated that the antiferromagnetism and weak ferromagnetism appear simultaneously upon *** lattice parameters(a,b,c,and V)deviate downward from the Grüneisen law,displaying an anisotropic magnetostriction *** extracted temperature variation of the local distortion parameterΔ.Compared to theΔvalue of Cr ions,Y,O1,and O2 ions show one order of magnitude largerΔvalues indicative of much stronger local lattice ***,the calculated bond valence states of Y and O2 ions have obvious subduction charges.

关键词： orthochromates x-ray powder diffraction crystal structure magnetization

基于案例模糊推理系统的土地价格估算系统研究

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重庆建筑大学学报 2005年第5期27卷 123-128页

作者：冯为民任宏李嘉荣朱俊武汉科技大学城市建设学院湖北武汉430070 重庆大学建设管理与房地产学院重庆400045

运用模糊数学的有关理论,提出了基于交易案例推理(CBR)的土地出让价格估算的数学模型系统,以及相关应用步骤和条件。计算实例表明,基于案例推理系统是有效的,可以作为土地交易价格估算的参考依据。

关键词：价格估算土地出让案例推理

Output feedback stabilization for an unstable cascaded ODE-Heat systems subject to external disturbance

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Output feedback stabilization for an unstable cascaded ODE-H...