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NiS ultrafine nanorod with translational and rotational symmetry

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National Science Review 2024年第7期11卷 218-225页

作者： Jianxin kang Qi Hu Ruixuan Zhang Ang Gao Zhongning Huang Ziming Su ke Pei Qinghua Zhang Li-Min Liu Renchao Che Lin Gu er-Jia Guo Lin Guo School of Chemistry Beihang University Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Academy for Engineering&Technology Fudan University Zhejiang Laboratory Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences School of Physics Beihang University

Anisotropy is a significant and prevalent characteristic of materials, conferring orientation-dependent properties, meaning that the creation of original symmetry enables key functionality that is not found in nature. Even with the advancements in atomic machining, synthesis of separated symmetry in different directions within a single structure remains an extraordinary challenge. Here, we successfully fabricate NiS ultrafine nanorods with separated symmetry along two directions. The atomic structure of the nanorod exhibits rotational symmetry in the radial direction, while its axial direction is characterized by divergent translational symmetry, surpassing the conventional crystalline structures known to date. It does not fit the traditional description of the space group and the point group in three dimensions, so we define it as a new structure in which translational symmetry and rotational symmetry are separated. Further corroborating the atomic symmetric separation in the electronic structure, we observed the combination of stripe and vortex magnetic domains in a single nanorod with different directions, in accordance with the atomic *** manipulation of nanostructure at the atomic level introduces a novel approach to regulate new properties finely, leading to the proposal of new nanotechnology mechanisms.

关键词： separated symmetry NiS anisotropy structure atomic machining magnetic domain

Potential preservative mechanisms of cardiac rehabilitation pathways on endothelial function in coronary heart disease

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Science China Life Sciences 2024年

作者： Wen-Tao Sun Jian-Yong Du Jia Wang Yi-Long Wang er-Dan Dong Research Center for Cardiopulmonary Rehabilitation University of Health and Rehabilitation Sciences Qingdao Hospital (Qingdao Municipal Hospital)School of Health and Life SciencesUniversity of Health and Rehabilitation Sciences Department of Cardiology and Institute of Vascular Medicine Peking University Third HospitalThe Institute of Cardiovascular SciencesPeking UniversityState Key Laboratory of Vascular Homeostasis and RemodelingPeking University

Cardiac rehabilitation, a comprehensive exercise-based lifestyle and medical management, is effective in decreasing morbidity and improving life quality in patients with coronary heart disease. Endothelial function, an irreplaceable indicator in coronary heart disease progression, is measured by various methods in traditional cardiac rehabilitation pathways, including medicinal treatment, aerobic training, and smoking cessation. Nevertheless, studies on the effect of some emerging cardiac rehabilitation programs on endothelial function are limited. This article briefly reviewed the endothelium-beneficial effects of different cardiac rehabilitation pathways, including exercise training, lifestyle modification and psychological intervention in patients with coronary heart disease, and related experimental models, and summarized both uncovered and potential cellular and molecular mechanisms of the beneficial roles of various cardiac rehabilitation pathways on endothelial function. In exercise training and some lifestyle interventions, the enhanced bioavailability of nitric oxide, increased circulating endothelial progenitor cells(EPCs), and decreased oxidative stress are major contributors to preventing endothelial dysfunction in coronary heart disease. Moreover, the preservation of endothelial-dependent hyperpolarizing factors and inflammatory suppression play roles. On the one hand, to develop more endothelium-protective rehabilitation methods in coronary heart disease, adequately designed and sized randomized multicenter clinical trials should be advanced using standardized cardiac rehabilitation programs and existing assessment methods. On the other hand, additional studies using suitable experimental models are warranted to elucidate the relationship between some new interventions and endothelial protection in both macro-and microvasculature.

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邦有道,亦可隐:东汉初年的隐逸风气与正统重建

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史林 2024年第3期 58-69,218页

作者：王尔中国人民大学历史学院 100872

东汉初年,中国历史上首次出现大批士人隐逸,其背后蕴含皇权消长、政局波动、天命承接、个人崛起、风俗迁移等种种意涵。经历了两汉之际诸政权没有定数的竞夺,西汉士人带着谁是“猎者”的困惑,开始处理其与东汉王朝的关系。隐逸成为他们... 详细信息

东汉初年,中国历史上首次出现大批士人隐逸,其背后蕴含皇权消长、政局波动、天命承接、个人崛起、风俗迁移等种种意涵。经历了两汉之际诸政权没有定数的竞夺,西汉士人带着谁是“猎者”的困惑,开始处理其与东汉王朝的关系。隐逸成为他们选择的一种方式。隐逸者多为西汉遗臣耆老,他们对年轻的刘秀集团并不信任,对后者建立新汉朝的合法性、对两汉承续关系多有怀疑,隐逸是他们宣示抵而不抗的一种姿态。选择出仕者与光武帝在政见上多有不合,又因谏诤而遭致排抑,唯有隐退方能保存尊严。面对众多士人的“不臣”,光武恩威并施,采取“圣主不宾”的策略,以容忍隐者、鼓励守节彰显自己“明王圣主”的品质。这种政策助长了隐逸的风气,推动了个体自立潮流的泛滥,形成东汉初年一种“邦有道,亦可隐”的新观念。隐逸的正当化,既缓解了遗臣士人与光武集团的紧张关系,又使隐逸转化为东汉重建正统的思想资源。“隐”由此获得了独立存在的意义。

关键词：东汉初年隐逸正统性光武帝遗臣 “圣主不宾”

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从《一千零一夜》开始

当代文坛 2024年第1期 52-60页

作者：李洱北京大学文学讲习所

1.《一千零一夜》,博尔赫斯认为,这是世界上最好的书名。“一千夜”就是“永远”,“一千零一夜”就是“比永远还要远”,就是“永恒”。所以,英文里表达“永恒”用的就是“forever and a day”(永远零一天)。在写作意义上,“一千零一夜... 详细信息

1.《一千零一夜》,博尔赫斯认为,这是世界上最好的书名。“一千夜”就是“永远”,“一千零一夜”就是“比永远还要远”,就是“永恒”。所以,英文里表达“永恒”用的就是“forever and a day”(永远零一天)。在写作意义上,“一千零一夜”让整体变成个体,让模糊变得具体,让整体与个体相融,让模糊与具体交织。“一千零一夜”也让每一个夜晚变成“这一个”夜晚,让每一个故事变成“这一个”故事。

关键词：一千零一夜写作意义博尔赫斯《一千零一夜》整体与个体书名故事

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寻找细节丰茂之地

扬子江文学评论 2024年第3期 10-14,F0002页

作者：田耳广西大学艺术学院

一前不久看一篇评论家综论,提及“70后”的创作,认为这一代作家执念于细节的营造,同时也因过于拘泥细节,而未获取足够开阔的视野,也未抵达更为幽深的人性观照。我读罢这一段,脑子迅速扫描我熟悉的一些“70后”作家及创作。作为一个群体... 详细信息

一前不久看一篇评论家综论,提及“70后”的创作,认为这一代作家执念于细节的营造,同时也因过于拘泥细节,而未获取足够开阔的视野,也未抵达更为幽深的人性观照。我读罢这一段,脑子迅速扫描我熟悉的一些“70后”作家及创作。作为一个群体,我们起初似乎都排斥“70后”这样笼统粗率的命名,但随着写作的推进,这一代人整体步入中年,“70后”的指称也一直未有更好的替代,慢慢我们开始接受、认领。毕竟我们不能否认,我们就是一代人。起初感觉这样的命名什么也没说,慢慢觉得它把什么都说了,甚至具有某种预言性质:你们只是整体清晰而个体贫弱的一代人。所以,“70后”老早又被冠名为“夹缝的一代”。相对于晚一点的“80后”,“70后”的个人面孔相对模糊,而“80后”个人仿佛自带一种横空出世的禀赋,比如早一点的韩寒,稍晚的双雪涛,近几年的班宇。

关键词：这一代人人性观照冠名韩寒 80后细节

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东汉兰台“文”的实践——以“刘秀起家”“建武革命”和“万夷宾服”为中心

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文学遗产 2024年第2期 85-98页

作者：王尔中国人民大学历史学院

东汉前期新设兰台,皇帝征召兰台之官。兰台文雄会聚,成为一个职能清晰的官方文艺机构。兰台文人用史、赋、颂、传记述东汉获得天命、功致太平的历程,由此形成一系列“文”的实践活动。班固等在兰台撰著《世祖本纪》,编织光武帝事迹,彰... 详细信息

东汉前期新设兰台,皇帝征召兰台之官。兰台文雄会聚,成为一个职能清晰的官方文艺机构。兰台文人用史、赋、颂、传记述东汉获得天命、功致太平的历程,由此形成一系列“文”的实践活动。班固等在兰台撰著《世祖本纪》,编织光武帝事迹,彰显其创业之功,确立开国史叙述;兰台文人撰著多篇“都赋”,以迁都洛阳隐喻东汉受命,批评西汉之承秦,凸显“汉历中绝”,建构“建武革命”的观念;文人创作《哀牢传》《神雀颂》等,染“万夷宾服”,暗喻东汉的统治区域达到前所未有之广阔。文人作“汉颂”,比拟《周颂》,传达古今同况、功成德洽之义。这一系列文章实践是明、章时代一场重要的政治文化工程,是东汉王朝重建合法性的自我表达。

关键词：兰台文《世祖本纪》都赋汉颂

CALD1 facilitates epithelial-mesenchymal transition progression in gastric cancer cells by modulating the PI3k-Akt pathway

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 1029-1045页

作者： Wen-Qian Ma Ming-Chang Miao Ping-An Ding Bi-Bo Tan Wen-Bo Liu Shuo Guo Li-Mian er Zhi-Dong Zhang Qun Zhao Department of Endoscopy The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina Hebei key Laboratory of Precision Diagnosis and Comprehensive Treatment of Gastric Cancer Shijiazhuang 050011Hebei ProvinceChina Department of Radiotherapy The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina The Third Department of Surgery The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina

BACkGROUND CALD1 has been discovered to be abnormally expressed in a variety of malignant tumors,including gastric cancer(GC),and is associated with tumor progression and immune infiltration;however,the roles and mechanisms of CALD1 in epithe-lial-mesenchymal transition(EMT)in GC are *** To investigate the role and mechanism of CALD1 in GC progression,invasion,and *** In this study,the relationship between CALD1 and GC,as well as the possible network regulatory mechanisms of CALD1,was investigated by bioinformatics and validated by ***1-siRNA was synthesized and used to trans-fect GC *** activity was measured using the CCk-8 method,cell migration and invasive ability were measured using wound healing assay and Transwell assay,and the expression levels of relevant genes and proteins in each group of cells were measured using qRT-PCR and Western blot.A GC cell xenograft model RESULTS Bioinformatics results showed that CALD1 was highly expressed in GC tissues,and CALD1 was significantly higher in EMT-type GC tissues than in tissues of other types of *** prognosis of patients with high expression of CALD1 was worse than that of patients with low expression,and a prognostic model was constructed and *** experimental results were consistent with the results of the bioinformatics *** expression level of CALD1 in GC cell lines was all higher than that in gastric epithelial cell line GES-1,with the strongest expression found in AGS and MkN45 *** activity was significantly reduced after CALD1-siRNA trans-fection of AGS and MkN45 *** ability of AGS and MkN45 cells to migrate and invade was reduced after CALD1-siRNA transfection,and the related mRNA and protein expression was *** to bioinfor-matics findings in GC samples,the CALD1 gene was significantly associated with the expression of members of the PI3k-AkT-mTOR signaling pathway as well as the EMT signaling pathway,and was closely rel

关键词： Gastric tumor CALD1 Epithelial-mesenchymal transition Gene disruption Invasion Migration Bioinformatics

Harm of Hail to Crops and Countermeasures of Artificial Hail Suppression in Ulanqab City

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Meteorological and Environmental Research 2024年第2期15卷 62-63,70页

作者： Pei WANG Tengge'er WU Jinhua LIU Ulanqab Meteorological Bureau Ulanqab 012000China Huade Meteorological Bureau Huade 013350China

Hail is one of meteorological disasters affecting crop growth in Ulanqab *** happens frequently from May to September,and this period is also the main growing season of *** this period,hail will cause damage to crops,make farmland soil harden,and bring varying degrees of harm to agricultural *** hail suppression is an important scientific and technological means for disaster prevention and *** is necessary to strengthen the monitoring,analysis and forecast of severe convection weather,intensify the release of early warning information of hail weather,provide accurate and reliable real-time information for the implementation of artificial hail suppression operations,strengthen the implementation of artificial weather modification,effectively carry out artificial hail suppression operations,and avoid and reduce the impact of hail disaster.

关键词： Hail Crops Harm Artificial hail suppression Ulanqab City

pH-controlled reversible sol-gel inversion by cerous phosphate nanofibers for hemostasis

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Rare Metals 2024年第10期43卷 5141-5151页

作者： Tuo Su Jun-Chen Xu Wei Yu Dan Su Di-er Shi Yi-Chao Pang Yao Ying Wang-Chang Li Juan Li Jing-Wu Zheng Liang Qiao Sheng-Lei Che Jing Yu Research Center of Magnetic and Electronic Materials College of Materials Science and EngineeringZhejiang University of Technology State key Laboratory for Diagnosis and Treatment of Infectious Diseases Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalCollege of MedicineZhejiang University key Laboratory of Drug Safety Evaluation and Research of Zhejiang Province Department of Clinical MedicineHangzhou Medical College Department of Chemistry Zhejiang University Clinical Medical College Yangzhou University

Developing biomimetic soft materials that display stimuli responsiveness using solely inorganic materials has been regarded as a challenge owing to that such materials?properties typically vary from those of living ***,biomimetic soft materials have been developed using organic materials or inorganic materials modified with organic small *** this study,we prepared cerium phosphate nanofibers （CePO4NFs） by using inorganic agents only without further *** CePO4NFs demonstrate sol-ge switching properties in response to pH value,allowing them to form a gel under high hydroxide ion （OH-） concentrations and turn back into sol under low *** formation of gel could be ascribed to the physical cross-linking of the nanofibers induced by the attractive electrostatic force of OH-and surface Ce3+.As a result,CePO4NFs are able to form a gel when in contac with blood of high pH value for *** specific clotting mechanism makes them better candidates for hemostasis of heavy bleeding.

关键词： Cerium phosphate nanofibers Hemostasis pH-responsive Reversible Sol-gel switching