Correction: Biofunctional Janus particles promote phagocytosis of tumor cells by macrophages

Correction for ‘Biofunctional Janus particles promote phagocytosis of tumor cells by macrophages’ by Ya-Ru Zhang et al., Chem. Sci., 2020, 11, 5323–5327, https://doi.org/10.1039/D0SC01146K.

The authors regret an error in Fig. 4a, where two of the panels contain partial overlap.Open in a separate windowFig. 1Tf–SPA3–aSIRPα JMPs promote the interaction and subsequent phagocytosis of B16F10 cells by BMDMs. (A) Representative confocal images of phagocytosis assays treated with different formulations for 2 or 4 h, respectively. (B) Time-dependent of phagocytosis treated with Tf–SPA3–aSirpα JMPs. In (A) and (B), B16F10 cells were labelled with CFSE (green), BMDMs were labelled with eFluor 670 (red) and particles were labelled with RB (blue). Scale bar: 20 μm.The panels for 2 h SPA3 and 2 h Tf + aSIRPα + SPA3 contain overlap, as the wrong data was initially used for 2 h SPA3. An independent expert has viewed the new data and has concluded that it is consistent with the discussions and conclusions presented.The correct Fig. 4 is shown below.The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.     

不同有机化蒙脱土对聚丙烯/蒙脱土纳米复合材料结构和性能的影响

采用不同的有机改性剂制备了三种含羟基极性基团、环氧基和不含极性基团的有机化蒙脱土, 并与混有少量马来酸酐接枝聚丙烯的聚丙烯基体进行复合, 制备了聚丙烯粘土纳米复合材料. 采用X射线衍射仪、透射电子显微镜、热分析仪、示差扫描热分析仪和力学测试仪对样品进行结构表征和力学性能测试. 探讨和比较了不同有机化蒙脱土对聚丙烯/蒙脱土纳米复合材料结构和性能的影响. 结果表明, 携带极性基团的有机改性剂和马来酸酐接枝聚丙烯的强烈相互作用有利于有机化蒙脱土在复合材料中的插层、剥离和稳定性, 由此形成的聚丙烯粘土纳米复合材料具有更高的结晶度, 其力学性能的提高也更为显著.     

Embedded high density metal nanoparticles with extraordinary thermal stability derived from guest-host mediated layered double hydroxides

A chemical precursor mediated process was used to form catalyst nanoparticles (NPs) with an extremely high density (10(14) to 10(16) m(-2)), controllable size distribution (3-20 nm), and good thermal stability at high temperature (900 °C). This used metal cations deposited in layered double hydroxides (LDHs) to give metal catalyst NPs by reduction. The key was that the LDHs had their intercalated anions selected and exchanged by guest-host chemistry to prevent sintering of the metal NPs, and there was minimal sintering even at 900 °C. Metal NPs on MoO(4)(2-) intercalated Fe/Mg/Al LDH flakes were successfully used as the catalyst for the double helix growth of single-walled carbon nanotube arrays. The process provides a general method to fabricate thermally stable metal NPs catalysts with the desired size and density for catalysis and materials science.     

Asymptotic solving method for a sea-air oscillator model of atmospheric physics

In this paper, a class of coupled system for the El Nin o/La Nin a southern oscillation (ENSO) atmospheric physics oscillation model is considered. We propose an ENSO atmospheric physics model using a method from the asymptotic theory. It is indicated from the results that the asymptotic method can be used for analyzing the sea surface temperature anomaly and the thermocline depth anomaly of the atmosphere-ocean oscillation for the ENSO model in the equatorial Pacific.     

VESTA软件在晶体结构教学中的应用

以晶体结构教学为例,引导学生利用VESTA软件搭建典型晶体的晶胞模型可大大激发学习兴趣,降低认知难度。通过金刚石、金属镁、金属铜、氯化钠、萤石等晶胞模型的搭建,空间充填模型的旋转与观察,晶面及配位多面体的插入,帮助学生突破原子分数坐标、空间利用率计算、晶体空隙的洞察等难点,是VESTA支撑下的具体教学策略。学生在体验真实建模的过程中加深了对认识原型的理解,收获了知识与快乐,发展了证据推理与模型认知这一化学学科核心素养。     

一类扰动发展方程近似解

采用了一个简单而有效的技巧, 研究了一类扰动发展方程. 首先引入求解一个相应典型方程的行波孤波解. 然后利用渐近方法得到了原扰动发展方程的近似解. 利用泛函分析的不动点定理, 指出了近似解级数的收敛性, 并讨论了近似解的精度.     

Synthesis and properties of novel photochromic bisthienylethenes containing imidazole and imidazolium derivatives

A series of bisthienylethenes containing imidazole and imidazolium derivatives have been prepared and the products have been characterized by means of NMR and MS.Their photochromic and fluorescent switch properties have been investigated by UV–vis absorption spectra and fluorescence spectra.The fluorescent emissions of these kinds of photochromic compounds can be simply modulated by varying the imidazole groups,which shows that these compounds may have potential application in the design of fluorescent photochromic materials.     

一类非线性尘埃等离子体孤波解

研究了一类非线性尘埃等离子体孤波解. 首先构造一个变分迭代, 其次决定系统的初始近似, 最后通过变分迭代方法得到了对应模型的各次近似解. 关键词： 等离子体 变分迭代 近似解     

材料类专业选修课教学改革——柔性材料与器件课程

为进一步改善教学效果、提高教学质量,通过问卷调查的方式,分析材料类专业选修课现存问题及原因,并提出教学改革方向,包括明晰学生的选课目的、动态调整教学内容、多重教学模式提高师生互动和多角度考核方式等提高学生能力素质达成情况。本文以柔性材料与器件课程为例,有针对性地提出了教学内容、教学形式、考核方式等3个方面的具体改进建议和措施,在此基础上总结和完善了面向材料类专业选修课的可行有效对策。     

Flexible and degradable resistive switching memory fabricated with sodium alginate

Transient electronics has attracted interest as an emerging technology to solve electronic-waste problem,due to its physically vanishing ability in solution.Here in this work,we demonstrate a flexible and degradable transient resistive switching(RS) memory device with simple structure of Cu/sodium alginate(SA)/ITO.The device presents excellent RS characteristics as well as high flexibility,including low operating voltage(1.5 V) and multilevel RS behavior.No performance degradation occurs after bending the device 50 times.Moreover,our device can be absolutely dissolved in deionized water.The proposed SA-based transient memory device has great potential for the development of green and security memory devices.