4 research outputs found
Table_1_Assessing the Association Between Lead Pollution and Risk of Alzheimer’s Disease by Integrating Multigenomics.XLSX
Alzheimer’s disease (AD) is a life-threatening neurodegenerative disease of the elderly. In recent observations, exposure to heavy metals environmental may increase the risk of AD. However, there are few studies on the causal relationship between heavy metal exposure and AD. In this study, we integrated two large-scale summaries of AD genome-wide association study (GWAS) datasets and a blood lead level GWAS dataset and performed the two-sample Mendelian randomization analysis to assess the causality of blood lead level and AD risk. The results showed that there is a significantly positive causality between blood lead level and AD risk both in the inverse-variance weighted (IVW) model and the weighted median estimator (WME) model. An independent additional verification also reached a consistent conclusion. These findings further confirm the conclusions of previous studies and improve the understanding of the relationship between AD pathogenesis and the toxicity of lead in environmental pollution.</p
Table_1_Multigene phylogeny, phylogenetic network, and morphological characterizations reveal four new arthropod-associated Simplicillium species and their evolutional relationship.docx
Simplicillium species are widely distributed and commonly found on various substrates. A minority of species are associated with arthropods. A spider-associated species Simplicillium araneae, and three insect-associated species, Simplicillium coleopterorum, Simplicillium guizhouense, and Simplicillium larvatum, are proposed as novel species based on a multi-locus phylogenetic analysis and morphological characteristics. These Simplicillium species completely fit the nutritional model of Hypocreales fungi and could be used as a model to study their evolutionary relationship. A phylogenetic network analysis based on ITS sequences suggests that a host jump was common among Simplicillium species, and S. araneae may have originally come from an insect host and then jumped to a spider host. However, the evolutionary relationship of S. coleopterorum, S. guizhouense, and S. larvatum was not clear in the phylogenetic network and more sequencing information should be added to the network. In addition, strain CBS 101267 was identified as Simplicillium subtropicum.</p
Facile and Scalable Modification of a Cu Current Collector toward Uniform Li Deposition of the Li Metal Anode
The development of
lithium metal anodes has been severely impeded
by the detrimental lithium (Li) dendrite growth which can largely
shorten the lifespan of the battery. Here, we propose a one-step redox
strategy to fabricate reduced graphene oxide (rGO) and Cu2O co-modified Cu current collector (rGO–Cu2O/Cu),
which can guide the uniform Li ion nucleation and suppress the formation
of the Li dendrite. The lithiophilic Cu2O in situ grown
on the Cu substrate via direct chemical oxidation of Cu foil by the
GO solution can decrease the Li nucleation overpotential and regulate
the preferential nucleation of Li ions, while the rGO produced at
the same time can facilitate the electron transport. As the consequence
of the synergistic effects, rGO–Cu2O/Cu could be
fully discharged with largely enhanced Coulombic efficiency of 98%
and extended cycling life of the symmetrical cell up to 300 h. The
full battery assembled with LiFePO4 also exhibits satisfying
electrochemical performance, indicating the promising practical application
of this Li-plated rGO–Cu2O/Cu anode. Furthermore,
the processable rGO–Cu2O/Cu which can make Li metal
anode moldable into various shapes with a controllable size will be
favorable to manufacture diverse device architectures
Flexible Electron-Rich Ion Channels Enable Ultrafast and Stable Aqueous Zinc-Ion Storage
Aqueous
zinc-ion batteries (ZIBs) are regarded as a promising candidate
for ultrafast charge storage owing to the high ionic conductivity
of aqueous electrolytes and high theoretical capacity of zinc metal
anodes. However, the strong electrostatic interaction between high-charge-density
zinc ions and host materials generally leads to sluggish ion-transport
kinetics and structural collapse of rigid cathode materials during
the charge/discharge process, so searching for suitable cathode materials
for ultrafast and long-term stable ZIBs remains a great challenge.
Herein, flexible electron-rich ion channels enabling fast-charging
and stable aqueous ZIBs have been demonstrated. Because of the nitrogen-rich
conjugated structure of organic phenazine (PNZ) molecules, electron-rich
ion channels are formed with the CN redox centers situated
on the channel surface, where zinc ions can transport rapidly and
react with active moieties directly. Meanwhile, the π-conjugated
systems and inherent flexibility of PNZ molecules can accommodate
rapid strain changes and maintain their structural stability during
zinc-ion intercalation/deintercalation. Consequently, they exhibit
a high capacity of 94.2 mAh g–1 at an ultrahigh
rate of 700C (208.6 A g–1) and an ultralong life
over 100,000 cycles at 100C, which are superior to those of previously
reported aqueous ZIBs. Our work presents a new way for developing
ultrafast and ultrastable aqueous ZIBs