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Synergistic effect of bonding heterogeneity and phonon localization in introducing excellent thermoelectric properties in layered heteroanionic NdZnSbO material

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Journal of Energy Chemistry 2025年第1期100卷 259-272页

作者： Da Wan Shuwei tang Shulin Bai Xiaodong Li Peng Ai Wanrong Guo Tuo zheng College of Materials Science and Engineering Liaoning Technical University Faculty of Chemistry Northeast Normal University

Layered rare-earth metal oxides, harnessing the dual properties of oxides and two-dimensional layered materials, exhibit remarkable thermal stability and quantum confinement effects. Therefore, this work adopts the first-principles calculation combined with the Boltzmann transport theory to predict the thermoelectric properties of NdZnSbO compound. The coexistence of weak interlayer van der Waals interactions, robust intralayer ionic bonding, and partial covalent bonding leads to remarkable bonding heterogeneity, which engenders pronounced phonon scattering and imposes constraints on thermal transport along the out-of-plane direction. The weakened chemical bonds induced by the antibonding states, together with the rattling-like behavior of the Zn atom, culminate in the profound anharmonicity in the layered NdZnSbO compound. The weakening bond and heavy element contribute to the softness of phonon modes, which significantly diminishes the phonon group velocity. The redistribution-dominated four-phonon scattering process spans a large optical gap, which effectively reduces the lattice thermal conductivity. The NdZnSbO compound exhibits direct semiconductor characteristic with a bandgap of 0.73 e V by adopting the Heyd-Scuseria-Ernzerhof(HSE06) functional in combination with spin–orbit coupling(SOC) effect. The multi-valley feature of NdZnSbO compound augur favorably for band degeneracy, thus amplifying the power factor. Consequently, an optimal figure-of-merit(ZT) of 3.40 at 900 K is achieved for the n-type NdZnSbO compound. The present study delves deeply insights into the origins for the low thermal conductivity of NdZnSbO compound and proposes an optimization scheme to enhance overall thermoelectric performance.

关键词： Bond strength (chemical)

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

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Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong tang Nan zheng Qingming Lin Yan You zheng Gong Yangping Zhuang Jiali Wu Yu Wang Hanlin Huang Jun Ke Feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

CNKSR2 interactome analysis indicates its association with the centrosome/microtubule system

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Neural Regeneration Research 2025年第8期20卷 2420-2432页

作者： Lin Yin Yalan Xu Jie Mu Yu Leng Lei Ma Yu zheng Ruizhi Li Yin Wang Peifeng Li hai Zhu Dong Wang Jing Li Institute for Translational Medicine The Affiliated Hospital of Qingdao UniversityMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina School of Basic Medicine Qingdao UniversityQingdaoShandong ProvinceChina College of Life Sciences and School of PharmacyMedical CollegeQingdao UniversityQingdaoShandong ProvinceChina Department of Urology Qingdao Municipal Hospital Affiliated to Qingdao UniversityQingdaoShandong ProvinceChina

The protein connector enhancer of kinase suppressor of Ras 2(CNKSR2),present in both the postsynaptic density and cytoplasm of neurons,is a scaffolding protein with several protein-binding *** of the CNKSR2 gene have been implicated in neurodevelopmental disorders,particularly intellectual disability,although the precise mechanism involved has not yet been fully *** has demonstrated that CNKSR2 plays a role in facilitating the localization of postsynaptic density protein complexes to the membrane,thereby influencing synaptic signaling and the morphogenesis of dendritic ***,the function of CNKSR2 in the cytoplasm remains to be *** this study,we used immunoprecipitation and high-resolution liquid chromatography-mass spectrometry to identify the interactors of *** a combination of bioinformatic analysis and cytological experiments,we found that the CNKSR2 interactors were significantly enriched in the proteome of the *** also showed that CNKSR2 interacted with the microtubule protein DYNC1H1 and with the centrosome marker *** colocalization analysis confirmed the centrosomal localization of *** we downregulated CNKSR2 expression in mouse neuroblastoma cells(Neuro 2A),we observed significant changes in the expression of numerous centrosomal *** manipulation also affected centrosome-related functions,including cell size and shape,cell proliferation,and ***,we found that CNKSR2 interactors were highly enriched in de novo variants associated with intellectual disability and autism spectrum *** findings establish a connection between CNKSR2 and the centrosome,and offer new insights into the underlying mechanisms of neurodevelopmental disorders.

关键词： autism spectrum disorder centrosome CNKSR2 intellectual disability interactome mass spectrometry microtubule neurodevelopmental disease protein complexes protein-protein interactions

Integration of perioperative features and intragraft TCF7L2 expression to predict lipid metabolic disorder in liver transplant recipients

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Science China Life Sciences 2025年第1期68卷 297-299页

作者： Junbin Zhou Rongli Wei Guanghan Fan zhengxing Lian Xuanyu Zhang Linsong tang Zhetuo Qi haiyang Xie Shusen zheng Qiang Wei Xiao Xu Department of Hepatobiliary and Pancreatic Surgery People's Hospital of LishuiAffiliated Lishui Hospital of Wenzhou Medical UniversityThe First Affiliated Hospital of Lishui University NHFPC Key Laboratory of Combined Multi-Organ Transplantation Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province Department of Hepatobiliary and Pancreatic SurgeryHangzhou First People's Hospital Department of Hepatobiliary and Pancreatic Surgery The First Affiliated HospitalZhejiang University School of Medicine Department of Urology The Second Affiliated HospitalZhejiang University School of Medicine Department of Hepatobiliary and Pancreatic Surgery Department of Liver TransplantationShulan (Hangzhou) Hospital Hangzhou Medical College Zhejiang University School of Medicine

Dear Editor, Liver transplantation(LT) is the only curative therapy for patients with endstage liver disease(He et al., 2023; Ling et al., 2022). Post-transplant hypertriglyceridemia(PTHT), which has an incidence of up to 32.8% in 6 months after LT, is one of the major post-transplant complications(Toshima et al., 2020).

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CpG抗肿瘤作用及其免疫活性的研究进展

国际肿瘤学杂志 2012年第9期39卷 671-674页

作者：唐正海王晓文唐劲天清华大学玉泉医院脑神经疾病研究所北京100049 北京中医药大学生物制药系

胞嘧啶与鸟嘌呤二核苷酸序列（CpGODN）是一段以非甲基化胞嘧啶与鸟嘌呤（CpG）为核心的碱基序列，能够激活体内的多种免疫细胞，发生免疫应答，抵抗疾病。调节CpG的结构，化学修饰可提高CpG的生物活性，提高CpG作为免疫佐剂和放疗、化... 详细信息

胞嘧啶与鸟嘌呤二核苷酸序列（CpGODN）是一段以非甲基化胞嘧啶与鸟嘌呤（CpG）为核心的碱基序列，能够激活体内的多种免疫细胞，发生免疫应答，抵抗疾病。调节CpG的结构，化学修饰可提高CpG的生物活性，提高CpG作为免疫佐剂和放疗、化疗增敏剂治疗肿瘤的效果。

关键词： CpG 免疫活性肿瘤

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某涂装磷化系统设备改造实例

上海涂料 2011年第9期49卷 43-45页

作者：汤政宪肖海英上汽通用五菱汽车股份有限公司广西柳州545007

东部涂装车间B线自投产以来,磷化系统就存在很多问题,严重影响了电泳漆膜的质量,增加了打磨成本。对该磷化系统的5个项目改造进行了介绍,分析如何提升磷化膜质量,优化磷化系统运行过程。

关键词：磷化系统改造磷化膜质量

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肿瘤生物学研究热点与抗肿瘤中药研发策略

中国中药杂志 2015年第17期40卷 3416-3422页

作者：陈修平唐正海石哲陆金健苏焕兴陈新王一涛中药质量研究国家重点实验室澳门大学中华医药研究院中国澳门999078

肿瘤生物学研究近年来取得长足进展,肿瘤免疫、肿瘤干细胞、细胞自噬、上皮-间质转化等已成为肿瘤学研究热点。对这些肿瘤生物过程的详尽阐明,为这种多因素导致细胞异常增殖,发病率和死亡率均居重大疾病之首肿瘤疾病治疗,也为抗肿瘤中... 详细信息

肿瘤生物学研究近年来取得长足进展,肿瘤免疫、肿瘤干细胞、细胞自噬、上皮-间质转化等已成为肿瘤学研究热点。对这些肿瘤生物过程的详尽阐明,为这种多因素导致细胞异常增殖,发病率和死亡率均居重大疾病之首肿瘤疾病治疗,也为抗肿瘤中药的药理评价、原理阐明和创新药研发提供了提供了新的靶标、新的契机与新的研究策略。

关键词：肿瘤中药肿瘤免疫细胞自噬肿瘤干细胞上皮-间质转化

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微米级羰基铁粉磁性骨水泥的制备与表征

中国组织工程研究 2013年第47期17卷 8155-8161页

作者：胡妍文王晓文唐正海魏兰镔庞瑞唐劲天北京中医药大学中药学院生物制药系北京市100102 清华大学玉泉医院北京市100049

背景:目前有日本学者提出采用磁性骨水泥治疗肿瘤的骨转移,然而现行磁性骨水泥添加的均为纳米级磁流体,将微米级羰基铁粉添入骨水泥的研究尚未见报道。目的:制备含不同比例微米级羰基铁粉的磁性骨水泥,并按ISO 5833标准测量相关指标及... 详细信息

背景:目前有日本学者提出采用磁性骨水泥治疗肿瘤的骨转移,然而现行磁性骨水泥添加的均为纳米级磁流体,将微米级羰基铁粉添入骨水泥的研究尚未见报道。目的:制备含不同比例微米级羰基铁粉的磁性骨水泥,并按ISO 5833标准测量相关指标及其磁性与体外升温情况。方法:将微米级羰基铁粉与聚甲基丙烯酸甲酯骨水泥混合制备成含羰基铁粉质量分数分别为0%,20%,30%,40%,50%的磁性骨水泥。将以上5组材料按ISO 5833标准测定凝固时间、聚合温度、抗压强度。并采用振动样品磁强计测定各组磁性及在交变磁场下的升温情况。结果与结论:随着羰基铁粉含量的增加,磁性聚甲基丙烯酸甲酯骨水泥的凝固时间有所延长。各组骨水泥的最高聚合温度均在65-70℃之间,并未随羰基铁粉含量的增加而改变,仅聚合温度最高点出现的时间随羰基铁粉含量提高而后延。各组骨水泥的抗压能力均大于60 MPa,但只有聚甲基丙烯酸甲酯骨水泥的抗压能力>70 MPa,符合IOS 5833标准要求。各组磁性骨水泥的磁饱和强度随羰基铁粉含量的提高而提高。在交变磁场下,磁性骨水泥的升温速率与磁场强度和羰基铁粉含量呈正相关。

关键词：生物材料组织工程骨材料聚甲基丙烯酸甲酯羰基铁粉骨水泥磁性材料体外升温国家自然科学基金

Effects of Binding Energy of Bioinspired Sacrificial Bond on Mechanical Performance of cis-1,4-Polyisoprene with Dual-crosslink

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Chinese Journal of Polymer Science 2018年第9期36卷 1055-1062页

作者： Sheng Wang zheng-hai tang Jing Huang Bao-Chun Guo Department of Polymer Materials and Engineering South China University of Technology

Although bioinspired sacrificial bonds have been demonstrated to be efficient in improving the mechanical properties of polymer materials, the effect of binding energy of a specific dynamic bond on the ultimate mechanical performance of a polymer network with dual-crosslink remains unclear. In this contribution, diamine and sulfur curing package are introduced simultaneously into a sulfonated cis-1,4-polyisoprene to create dually-crosslinked cis-1,4-polyisoprene network with sulfonate-aminium ionic bonds as the sacrificial bonds. Three diamines （primary, secondary and tertiary） with the same spacer between the two nitrogen atoms are used to create the ionic bonds with different binding energies. Although the binding energy of ionic bond does not affect the glass transition temperature of cis-1,4-polyisoprene （IR）, it exerts definite influences on strain-induced crystallization and mechanical performance. The capabilities of diamine in dissipating energy, promoting strain-induced crystallization and enhancing the mechanical performance are in the same order of secondary diamine 〉 primary diamine 〉 tertiary diamine. The variations in mechanical performances are correlated to the binding energy of the ionic bond, which is determined by pKa values.

关键词： cis-1,4-Polyisoprene Ionic bond Sacrificial bond Binding energy Strain-induced crystallization