Pushing the limit of the charging cut-off voltage inevitably leads to the instability of bulk and interfacial structures. Herein, one-step dual-modified LiCoO (LCO) is achieved by thermodynamic decomposition of lithiuim salts on the surface, featuring F-doped bulk and LiF & LiBO coating layers. Notably, such artificial near-surface reconfiguration effectively suppresses Co dissolution, structural deconstruction and electrolyte side reactions during repeated lithiation/delithiation processes.
View Article and Find Full Text PDFHuman osteosarcoma is the most frequent malignant primary bone tumor that mainly occurs in young adults and children. MicroRNAs (miRNAs/miRs) are abnormally expressed in human osteosarcoma and contribute to osteosarcoma initiation and development. The present study aimed to investigate the role of miR-382-5p in the nosogenesis of osteosarcoma and to identify a novel target for osteosarcoma treatment.
View Article and Find Full Text PDFTwo new sesquiterpenes, litseachrandaevanes C and D ( and ), together with five known sesquiterpenes (), were isolated from the stems of (Hance) Merr. Their structures were elucidated using comprehensive spectroscopic methods. The inhibitory effect of all compounds on the proliferation of primary synovial cells was evaluated.
View Article and Find Full Text PDFIntroduction: Sleep apnea/hypopnea syndrome (SAHS) can change brain structure and function. These alterations are related to respiratory event-induced abnormal sleep, however, how brain activity changes during these events is less well understood.
Methods: To study information content and interaction among various cortical regions, we analyzed the variations of permutation entropy (PeEn) and symbolic transfer entropy (STE) of electroencephalography (EEG) activity during respiratory events.
Electrochemical nitrogen fixation techniques have emerged as a promisingly sustainable approach to face the challenge associated with nitrogen activation of ammonia synthesis by the Haber-Bosch process under ambient conditions. Herein, the performance of electrocatalytic nitrogen reduction for the production of α-Fe O nanospindles coated with mesoporous TiO with different crystallinity [denoted as α-Fe O @mTiO -X (X=300, 400, and 500 °C)] were investigated. The as-prepared α-Fe O @mTiO -400 composite exhibits a large NH yield (27.
View Article and Find Full Text PDFElectrochemical conversion of N to NH under ambient conditions is a promising and environmentally friendly route compared with the CO-emitting and energy-intensive Haber-Bosch process. Nevertheless, due to ultrahigh stability of N, it is urgent to explore efficient catalysts to weaken and activate the N≡N bond. Here, we report the Mo-doped iron phosphide (Mo-FeP) nanosphere as a valid transition-metal-based catalyst for electrochemical N-to-NH fixation under ambient conditions.
View Article and Find Full Text PDFDeposition of H2A.Z in chromatin is known to be mediated by a conserved SWR1 chromatin-remodeling complex in eukaryotes. However, little is known about whether and how the SWR1 complex cooperates with other chromatin regulators.
View Article and Find Full Text PDFAnnu Int Conf IEEE Eng Med Biol Soc
July 2019
Men and women were reported to be different in brain structure and sleep patterns. Here we analyzed the region, sleep stage and frequency band-specific EEG synchronization intensity of whole night sleep recording of 14 male and 14 age-matched female subjects by calculating weighted phase lag indexes. Moreover, resting wakeful stage EEG was also analyzed and compared.
View Article and Find Full Text PDFThe authors describe an electrochemical and an optical method for the determination of As(V) by using iron oxyhydroxide (FeOOH) nanorods that display peroxidase-mimicking activity. The nanorods catalyze the oxidation of substrate ABTS by HO to form a green product with an absorption maximum at 418 nm. If, however, As(V) is electrostatically adsorbed on the nanorods, the oxidation is gradually inhibited.
View Article and Find Full Text PDFIn situ-derived boron-doped graphene quantum dots can significantly improve the activity of boron carbide nanosheets for artificial N2 fixation and reduction with superior electrocatalytic activity (NH3 yield: 28.6 μg h-1 mgcat.-1 at -0.
View Article and Find Full Text PDFSci China Life Sci
February 2018
The SU(VAR)-3-9-related protein family member SUVR2 has been previously identified to be involved in transcriptional gene silencing both in RNA-dependent and -independent pathways. It interacts with the chromatin-remodeling proteins CHR19, CHR27, and CHR28 (CHR19/27/28), which are also involved in transcriptional gene silencing. Here our study demonstrated that SUVR2 is almost fully mono-sumoylated in vivo.
View Article and Find Full Text PDFThe mechanism by which MORPHEUS' MOLECULE1 (MOM1) contributes to transcriptional gene silencing has remained elusive since the gene was first identified and characterized. Here, we report that two Arabidopsis thaliana PIAS (PROTEIN INHIBITOR OF ACTIVATED STAT)-type SUMO E3 ligase-like proteins, PIAL1 and PIAL2, function redundantly to mediate transcriptional silencing at MOM1 target loci. PIAL1 and PIAL2 physically interact with each other and with MOM1 to form a high molecular mass complex.
View Article and Find Full Text PDFBiomed Eng Online
February 2015
Zhonghua Yu Fang Yi Xue Za Zhi
February 2009
Objective: To study the factors affecting the management and treatment of immigrant workers with tuberculosis, to determine the most effective measures and to provide an academic basis for tuberculosis control and prevention strategies targeting the immigrant population.
Methods: A self-designed questionnaire was administered to 1364 immigrant workers with tuberculosis (study group) and 436 local residents (control group) with tuberculosis.
Results: Whether a patient's tuberculosis status was discovered or not was related to the medical facilities initially visited, job mobility, and the individual worker's economic condition.