Recent Advances in One‑Dimensional Micro/Nanomotors:Fabrication,Propulsion and Application

Due to their tiny size,autonomous motion and functionalize modifications,micro/nanomotors have shown great potential for environmental remediation,biomedicine and micro/nano-engineering.One-dimensional(1D)micro/nanomotors combine the characteristics of anisotropy and large aspect ratio of 1D materials with the advantages of functionalization and autonomous motion of micro/nanomotors for revolutionary applications.In this review,we discuss current research progress on 1D micro/nanomotors,including the fabrication methods,driving mechanisms,and recent advances in environmental remediation and biomedical applications,as well as discuss current challenges and possible solutions.With continuous attention and innovation,the advancement of 1D micro/nanomotors will pave the way for the continued development of the micro/nanomotor field.

Knowledge Mapping of Opuntia Milpa Alta Since 1998: A Scientometric Analysis

Opuntia Milpa Alta is a cactus cultivated,domesticated,hybridized and selected from the plant Opuntia ficusindica by Mexican agricultural experts,which can be used as fruit and vegetable.Opuntia Milpa Alta leaves and fruit are superior to wild varieties and suitable for storage and transportation.In 1998,Opuntia Milpa Alta was introduced to China from Mexico by the Quality Product Development Center of the Ministry of Agriculture of China.Up to now,the Opuntia Milpa Alta has been cultivated on a certain scale in China.This study aims to identify the research progress and development trends of Opuntia Milpa Alta in China.Papers published between 1998 to 2019 from two major Chinese academic databases(CNKI and Wangfang)with a topic search related to Opuntia Milpa Alta were collected.The research progress and development trends were analyzed based on CiteSpace software of text mining and visualization.The analysis found that Opuntia Milpa Alta has gone through three obvious research phases after being introduced to China.In the first phase,the researchers paid attention to its cultivation method.Subsequently,researchers began to use extraction methods to extract some of its components,such as polysaccharides and flavonoids.Finally,these extracted ingredients began to be used in some biomedical research.

Correlation of pretreatment serum tissue polypeptide specific antigen (TPS) with prognosis in primary breast cancer

Objective: The aim of this study was to explore the correlation of pretreatment serum tissue polypeptide specific antigen (TPS) with prognosis in primary breast cancer. Methods: A total of 361 patients with grades I-III breast cancer had been followed up from January 2001 to February 2011. Serumal TPS level was measured by enzyme-linked immunosorbent assays (ELISA). Univariate and multivariate analyses were used to investigate associations between pretreatment TPS level and clinicopathological parameters and patient outcomes. Results: First, at the univariate analysis, the expression of TPS was related with some clinicopathological traditional prognostic factors such as tumor size (P = 0.030), histologic grade (P = 0.001) and lymph node status (P = 0.008). Second, overall survival were significantly shorter among patients with elevated pretreatment serum TPS (P = 0.038). However, finally, multivariate Cox regression indicated that the level of pretreatment serum TPS was not an independent prognostic parameter for overall survival in primarily breast cancer patients (P > 0.05). Conclusion: The expression of pretreatment serum TPS is closely correlated with clinicopathology parameters and overall survival of patients with primarily breast cancer, but its level has no independent prognostic value.

Five new species of Episymploce(Blattodea:Blaberoidea:Ectobiidae)from China

In this paper,five new species of Episymploce are reported,mainly distributed in Yunnan,Guizhou and Guangxi in China.Three new synonyms and a combination are proposed.Morphological descriptions of the new species,including the male genitalia,are provided along with detailed photographs.A checklist to Episymploce from China is also given to indicate the diversity of species.

Electrochemical Identification of Yulania spp. by Fingerprinting of Leaves Using Glassy Carbon Electrode

In this communication,we used electrochemical sensor for recording the electrochemical profiles of eleven species of Yulania spp.from leaf extract.Two solvents and two buffer conditions were used for electrochemical fingerprints collection.Their electrochemical fingerprints can be converted to different patterns and consequently for species recognition.The results indicate the pattern recognition is much convenient than that of the recognition of species directly using voltammetric signal.The current information in electrochemical fingerprinting represents the type and amount of electrochemically active molecules,which linked to the genetic differences among the plants.Therefore,the electrochemical fingerprints were applied for further phylogenetic study.The phylogenetic tree deduced from voltametric curves is divided into three main groups.The first clade contains Y.denudate,Liriodendron chinense,Y.cylindrica,Y.biondii,Y.sprengeri.The second clade contains Y.zenii,Y.liliiflora,Y.kobus,and Y.amoena.The third clade contains Y.×soulangeana,Manglietia fordiana and Y.sinostellata.In addition,Y.salicifolia is not in these main clades.The results demonstrate that electrochemical fingerprinting can be used as a com-plementary tool in the study of phylogenetics.

The MADS-box transcription factor GmFULc promotes GmZTL4 gene transcription to modulate maturity in soybean

Flowering time and maturity are crucial agronomic traits that affect the regional adaptability of soybean plants.The development of soybean cultivars with early maturity adapted to longer days and colder climates of high latitudes is very important for ensuring normal ripening before frost begins.FUL belongs to the MADS-box transcription factor family and has several duplicated members in soybeans.In this study,we observed that overexpression of GmFULc in the Dongnong 50 cultivar promoted soybean maturity,while GmFULc knockout mutants exhibited late maturity.Chromatin immunoprecipitation sequencing(ChIP-seq)and RNA sequencing(RNA-seq)revealed that GmFULc could bind to the CArG,bHLH and homeobox motifs.Further investigation revealed that GmFULc could directly bind to the CArG motif in the promoters of the GmZTL3 and GmZTL4 genes.Overexpression of GmZTL4 promoted soybean maturity,whereas the ztl4 mutants exhibited delayed maturity.Moreover,we found that the cis element box 4 motif of the GmZTL4 promoter,a motif of light response elements,played an important role in controlling the growth period.Deletion of this motif shortened the growth period by increasing the expression levels of GmZTL4.Functional investigations revealed that short-day treatment promoted the binding of GmFULc to the promoter of GmZTL4 and inhibited the expression of E1 and E1Lb,ultimately resulting in the promotion of flowering and early maturation.Taken together,these findings suggest a novel photoperiod regulatory pathway in which GmFULc directly activates GmZTL4 to promote earlier maturity in soybean.