关于Mordell方程y^2=x^3＋k

设l,l1,l2,…,ls为任意整数,n为正整数,n1,n2,…,ns为任意非负整数．用初等数论方法证明了：如果k满足k=（4l＋2）^3-Пi=1^s（4li＋1）^2ni或k=（4l＋3）^3-2^2nПi=1^s（4li＋1）^2ni,则Mordell方程y^2=x^3＋k无整数解．     

《中国音韵学研究》讹夺举例

《中国音韵学研究》是研究汉语言文字学的重要经典著作之一,它的出版标志着现代音韵学的诞生。但古音字类表存在的一些讹夺等现象尚未引起前修时贤的关注。现参照《康熙字典》、《广韵》等辞书,分类列举古音字类表的疏漏现象,并以声母表和韵母表中韵字对应的情况稍加说明。     

鞍山地区“农民体育健身工程”的实施现状、问题与对策研究

主要运用文献资料法、访谈法、问卷调查法、以及数理统计法对辽宁省鞍山地区农民体育健身工程的实施现状、依托工程开展体育活动与农民参加体育锻炼情况进行了调查分析,并根据所发现的问题,提出了农民体育健身工程可持续发展的对策,为进一步推动鞍山地区农民体育健身工程的实施提供理论依据。     

Enabling Mg metal anodes rechargeable in conventional electrolytes by fast ionic transport interphase

Rechargeable magnesium batteries have received extensive attention as the Mg anodes possess twice the volumetric capacity of their lithium counterparts and are dendrite-free. However, Mg anodes suffer from surface passivation film in most glyme-based conventional electrolytes, leading to irreversible plating/stripping behavior of Mg. Here we report a facile and safe method to obtain a modified Mg metal anode with a Sn-based artificial layer via ion-exchange and alloying reactions. In the artificial coating layer, Mg₂Sn alloy composites offer a channel for fast ion transport and insulating MgCl₂/SnCl₂ bestows the necessary potential gradient to prevent deposition on the surface. Significant improved ion conductivity of the solid electrolyte interfaces and decreased overpotential of Mg symmetric cells in Mg(TFSI)₂/DME electrolyte are obtained. The coated Mg anodes can sustain a stable plating/stripping process over 4000 cycles at a high current density of 6 mA cm⁻². This finding provides an avenue to facilitate fast ion diffusion kinetics of Mg metal anodes in conventional electrolytes.     

论高职图书馆在素质教育中的作用

从新世纪对人才的要求出发,论述了对高职院校大学生实施素质教育的必要性,以及高职院校图书馆在大学生素质教育中承担的责任和义务。     

Replication,pathogenicity, and transmission of SARS-CoV-2 in minks

Minks are raised in many countries and have transmitted severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to humans. However, the biologic properties of SARS-CoV-2 in minks are largely unknown. Here, we investigated and found that SARS-CoV-2 replicates efficiently in both the upper and lower respiratory tracts, and transmits efficiently in minks via respiratory droplets; pulmonary lesions caused by SARS-CoV-2 in minks are similar to those seen in humans with COVID-19. We further found that a spike protein-based subunit vaccine largely prevented SARS-CoV-2 replication and lung damage caused by SARS-CoV-2 infection in minks. Our study indicates that minks are a useful animal model for evaluating the efficacy of drugs or vaccines against COVID-19 and that vaccination is a potential strategy to prevent minks from transmitting SARS-CoV-2.     

论统一法律职业资格考试制度对法学教育的挑战及其对策

法律职业资格考试制度经历了由律考到司考再到法考的时代变迁。在新时代背景下,统一法律职业资格考试制度以提高法律职业人员的整体素养和考生综合分析能力以及解决问题能力为价值取向,在报考人员范围、学历条件、报名考试的禁止性条件、考试内容和方式以及对取得法律职业资格人员的管理等五个方面表现出新的特征;在考试内容、通过率以及开考时间上对法学教育提出了新的挑战。为此,法学教育应实现通识教育和职业教育的紧密契合,优化调整法学教育内容及体系,处理好法律职业资格考试和课堂教学的关系,丰富和创新法学教育方式,实现统一法律职业资格考试与法学教育的良性互动。     

关于终身教育、终身学习与学习化社会理念的思考

倡导终身学习、构建终身教育体系与建立学习化社会的实践热潮正在我国掀起。但人们对于终身教育、终身学习以及学习化社会三大理念的理解和认识还有待深入。因此 ,从国际范围出发来深入地探讨、分析一下它们的“定义”、“要义”、“关系”、“初衷”等 ,对于尽可能走向理解的完善与认识的成熟而言 ,无疑是有所裨益的。     

小粒子Mie散射理论及应用（Ⅰ）

本详细综述了近几年小粒子Mie散射的理论基础及其发展。     

论社会弱势群体的成因及其扶助措施

弱势群体问题关系着社会稳定的大局,已成为时下中国社会关注的热点问题。本文客观剖析了弱势群体产生的原因,提出了扶助社会弱势群体的具体措施。