An Efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their development.The primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid boron.In this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B system.This approach can be adopted to form various low-melting-point AM–Mg–B–O growth systems.These growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN chains.These findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

Risk of group aggregative behavior during COVID-19 outbreak: A case report

BACKGROUND At the end of 2019,a new epidemic of viral pneumonia emerged in China and was determined to be caused by a novel coronavirus,which was named coronavirus disease 2019(COVID-19)by the World Health Organization.The epidemic quickly spread,causing a worldwide pandemic.Scientists and clinicians across the globe have shifted their research efforts towards understanding the virus itself and its epidemiology.CASE SUMMARY In mid-January 2020,a Chinese family made a visit to a local city,and within the next 2 wk one after another fell ill with COVID-19.At the beginning of their first illness onset,the family had eaten in a restaurant,which led to the subsequent illness onset in another two families.All cases were diagnosed as COVID-19 by real-time fluorescent reverse transcription-polymerase chain reaction.Epidemiological investigation showed that the transmission chain was complete.CONCLUSION This chain of social exposure highlights the danger of group aggregative behavior for spread of COVID-19.

Geographical Indication of Unique Production Technology of Bahu Lotus Root

Bahu lotus root is a specialty of Hedong District,Linyi City,Shandong Province.It was recognized as a national product of geographical indication in 2011.This article describes the specific production area,unique production environment,rich cultural history and unique quality of Bahu lotus root,and summarizes its unique production from four aspects:selection of origin,selection of variety,production management and timely harvest,aiming to maintain the brand of Bahu lotus root to the greatest extent and further enhance the brand value and influence.

Actin polymerization induces mitochondrial distribution during collective cell migration

Collective cell migration plays critical roles in various developmental,physiological,and pathological processes such as morphogenesis,wound healing,and tumor metastasis(Friedl and Gilmour,2009).During collective migration,each coherent group of associated cells needs to interpret external directional signal and convert it into a front-back asymmetry across a collective group(Rorth,2011).But the underlying mechanism for the establishment and maintenance of front-back asymmetry during collective migration is still not well understood.

Corrigendum to“Actin polymerization induces mitochondrial distribution during collective cell migration”[Journal of Genetics and Genomics(2023)50 46-49]

This erratum clarifies information in the Letter to the Editor“Actin polymerization induces mitochondrial distribution during collective cell migration”by Qu et al.(2023).In the section for the list of author names,“Chen Qu,Yating Kan,Hui Zuo,Mengqi Wu,Zhixiang Dong,Xinyi Wang,Qing Zhang,Heng Wang,Dou Wang,Jiong Chen”should be“Chen Qu,Yating Kan,Xinyi Wang,Hui Zuo,Mengqi Wu,Zhixiang Dong,Qing Zhang,Heng Wang,Dou Wang,Jiong Chen”.