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Ether-based electrolytes are considered as an ideal electrolyte system for sodium metal batteries (SMBs) due to their superior compatibility with the sodium metal anode (SMA). However, the selection principle of ether solvents and the impact on solid electrolyte interphase formation are still unclear. Herein, we systematically compare the chain ether-based electrolyte and understand the relationship between the solvation structure and the interphasial properties. The linear ether solvent molecules with different terminal group lengths demonstrate remarkably distinct solvation effects, thus leading to different electrochemical performance as well as deposition morphologies for SMBs. Computational calculations and comprehensive characterizations indicate that the terminal group length significantly regulates the electrolyte solvation structure and consequently influences the interfacial reaction mechanism of electrolytes on SMA. Cryogenic electron microscopy clearly reveals the difference in solid electrolyte interphase in various ether-based electrolytes. As a result, the 1,2-diethoxyethane-based electrolyte enables a high Coulombic efficiency of 99.9 %, which also realizes the stable cycling of Na||Na3 V2 (PO4 )3 full cell with a mass loading of ≈9â mg cm-2 over 500â cycles.
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A Gram-negative, oxidase- and catalase-positive, rod-shaped, non-spore-forming, motile, aerobic bacterium, designated Y2(T), was isolated from surface seawater of Yundang Lake, Xiamen, China. The strain was able to grow in the presence of 0.5-6.0% NaCl (optimum 1.0-1.5%), at pH 5-10 (optimum pH 8) and at 10-40 °C (optimum 25 °C). Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain Y2(T) belongs to the genus Pseudoalteromonas, with the highest sequence similarity of 94.9% to Pseudoalteromonas tunicata D2(T); within the genus Pseudoalteromonas, it showed the lowest similarity of 92.8% to Pseudoalteromonas denitrificans ATCC 43337(T). The G+C content of the chromosomal DNA of strain Y2(T) was 45.1 mol%. The predominant fatty acids were summed feature 3 (C(16 : 1)ω6c and/or C(16 : 1)ω7c), C(16 : 0), C(12 : 0) 3-OH and summed feature 8 (C(18 : 1)ω6c and/or C(18 : 1)ω7c). The only respiratory quinone detected was Q-8. Based on the phylogenetic and phenotypic characteristics, strain Y2(T) represents a novel species of the genus Pseudoalteromonas, for which the name Pseudoalteromonas xiamenensis sp. nov. is proposed; the type strain is Y2(T) (â=âCGMCC 1.12157(T)â=âJCM 18779(T)).
Assuntos
Filogenia , Pseudoalteromonas/classificação , Água do Mar/microbiologia , Técnicas de Tipagem Bacteriana , Composição de Bases , China , DNA Bacteriano/genética , Ácidos Graxos/química , Dados de Sequência Molecular , Pseudoalteromonas/genética , Pseudoalteromonas/isolamento & purificação , RNA Ribossômico 16S/genética , Análise de Sequência de DNA , Vitamina K 2/análogos & derivados , Vitamina K 2/químicaRESUMO
ABSTRACT: BACKGROUND: Idiopathic intracranial hypertension (IIH) is a neurological disorder characterized by elevated intracranial pressure, affecting predominantly obese women of childbearing age. Early recognition and comprehensive management are vital for preventing severe complications, particularly vision loss. METHODS: This study reports a case of a 27-year-old woman who presented with chronic headaches and blurred vision. Notable findings included headaches that were intensified upon waking and exacerbated by activities that elevated intracranial pressure. The patient also reported nausea, vomiting, transient visual obscurations, and pulsatile tinnitus. After a clinical examination, she was given a diagnosis of IIH. RESULTS: The patient underwent a lumbar-peritoneal shunt procedure to alleviate her symptoms in conjunction with medication treatment. This case study highlights the importance of a multidisciplinary approach in diagnosing and treating IIH. In particular, weight management emerged as a crucial preventive measure against IIH recurrence. CONCLUSION: A multidisciplinary team strategy can enhance outcomes and quality of life, accentuating the need for continued research into IIH recurrence, treatments, and wider implications.
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Cerebrovascular accidents, also known as strokes, represent a major global public health challenge and contribute to substantial mortality, disability, and socioeconomic burden. Multidisciplinary approaches for poststroke therapies are crucial for recovering lost functions and adapting to new limitations. This review discusses the potential of neuromodulation techniques, repetitive transcranial magnetic stimulation (rTMS), transcranial direct current stimulation, spinal cord stimulation (SCS), vagus nerve stimulation (VNS), and deep brain stimulation (DBS), as innovative strategies for facilitating poststroke recovery. Neuromodulation is an emerging adjunct to conventional therapies that target neural plasticity to restore lost function and compensate for damaged brain areas. The techniques discussed in this review have different efficacies in enhancing neural plasticity, optimizing motor recovery, and mitigating poststroke impairments. Specifically, rTMS has shown significant promise in enhancing motor function, whereas SCS has shown potential in improving limb movement and reducing disability. Similarly, VNS, typically used to treat epilepsy, has shown promise in enhancing poststroke motor recovery, while DBS may be used to improve poststroke motor recovery and symptom mitigation. Further studies with standardized protocols are warranted to elucidate the efficacy of these methods and integrate them into mainstream clinical practice to optimize poststroke care.
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Spinal cord injury (SCI) is a severe central nervous system injury that can cause sensory or motor dysfunction. Although mortality rates for people with spinal cord injuries have dropped dramatically with advances in medicine, chronic long-term sequelae after SCI persist. The most bothersome problems reported by patients include pain, spasticity, urinary dysfunction, and loss of motor function. Thus, quality of life (QoL) is an essential issue in chronic SCI. Spinal cord stimulation (SCS) applies an adjustable, nondamaging electrical pulse that can reduce uncomfortable comorbidities and improve mobility, thus enhancing the QoL of patients with SCI. This review summarizes pivotal breakthroughs from SCS for individual clinical impairment from SCI. We conclude that careful evaluation of SCS can help improve neuropathic pain, spasms, motor symptoms, and voiding dysfunction in patients with SCI, thus improving QoL.
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The invasion of noxious weed species has long been associated with the degradation of alpine grasslands ecosystems. However, traditional in situ-based methods for surveying noxious weed species are generally time consuming and inefficient over large-scale areas. This paper investigates the possibility of applying multisource data to map the occurrence and spatial distribution of noxious weed species in degraded alpine grasslands in the Three-River Headwaters Region, China. Sentinel-2 image-related vegetation indices (VIs), field sample data and environmental variables were integrated to build a noxious weed species detection model based on the maximum entropy (MaxEnt) species modeling framework. The modeling results suggest that based on both training and testing AUC (area under the receiver operating characteristic (ROC) curve) values higher than 0.82, the VI-only variable model, the environmental-only variable model and the combined environmental and VI variables model, all yielded good simulation results. The spatial distributions of noxious weed species mapped by the VI-only variable model and the combined environmental and VI variable model were more concentrated, while the VI-only variable model yielded more scattered results. This analysis also explains why noxious weed species are mainly distributed in the low-elevation flat riverine zone in the study area. The model combining Sentinel-2 imagery-related VIs, environmental variables and in situ sample data proposed in this study can successfully map the occurrence and spatial distributions of noxious weed species. The method and results of this research can be used to help monitor noxious weed species invasions and better manage grassland ecosystems.
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Ecossistema , Rios , China , Pradaria , Plantas DaninhasRESUMO
A Vibrio sp. lytic phage VH7D was isolated from seawater of an abalone farm in Xiamen, China. The phage was capable of lysing Vibrio rotiferianus DSM 17186(T) and Vibrio harveyi DSM 19623(T). The complete genome of this phage consists of 246,964 nucleotides with a GC content of 41.31%, which characterized it as a giant vibriophage. Here we report the complete genome sequence and major findings from the genomic annotation.