Driven by boosting demands for sustainable energy, highly conductive hydroxide exchange membranes (HEMs) are urgently required in electrochemical conversion devices. The hydrogen bonds shorter than 2.5 angstrom are expected to accelerate the ion transport.
View Article and Find Full Text PDFEcological flow denotes the minimum volume of water required to sustain the integrity and health of watershed ecosystems, ensuring their stability and functioning over time. However, research on estimating ecological flow at the sub-basin level and developing strategies for ecological water replenishment is still limited. The study begins by utilizing measured runoff data from 1952 to 2020.
View Article and Find Full Text PDFAutism spectrum disorder (ASD) has become an increasingly prominent global health issue. Sulforaphane is a phytochemical with multiple functions that target many of the same biochemical and molecular pathways (biomarkers) associated with ASD. This study aimed to conduct a meta-analysis based on sulforaphane's effect on Aberrant Behavior Checklist (ABC) and Social Responsiveness Scale (SRS) in patients with ASD.
View Article and Find Full Text PDFDue to the global demands on carbon neutralization, CO separation membranes, particularly those based on two-dimensional (2D) materials, have attracted increasing attention. However, recent works have focused on the chemical decoration of membranes to realize the selective transport, leading to the compromised stability in the presence of moisture. Herein, we develop a series of 2D capillaries based on layered double hydroxide (LDH), graphene oxide, and vermiculite to enhance the oversaturation of CO in the confined water for promoting the membrane permselectivity.
View Article and Find Full Text PDFExtracting lithium from salt lakes requires ion-selective membranes with customizable nanochannels. However, it remains a major challenge to separate alkali cations due to their same valences and similar ionic radius. Inspired by the K channel of KcsA K, significant progress has been made in adjusting nanochannel size to control the ion selectivity dominated by alkali cations dehydration.
View Article and Find Full Text PDFThe increasing climate change and human activities exert their influence on the ecological sensitivity of the region individually and interactively. Therefore, a clear understanding of the impact of climate change and human activities on ecological sensitivity will enhance the resilience of the regional ecological environment and the level of sustainable development. This study took the Yangtze River Economic Belt, the first demonstration zone of China's ecological civilization construction, as the research object.
View Article and Find Full Text PDFPurpose: The genotype distribution of human papillomavirus (HPV) infection varies greatly in different regions. This study aims to determine the prevalence and type-specific distribution of HPV among females from Chengdu and Aba in Sichuan Province, which differ in geographical location, economic status, and living habits. These can serve as evidence of epidemic patterns for future design and implementation of vaccination and screening programs.
View Article and Find Full Text PDFPolyene macrolactams are a special group of natural products with great diversity, unique structural features, and a wide range of biological activities. Herein, a cryptic gene cluster for the biosynthesis of putative macrolactams was disclosed from a sponge-associated bacterium, sp. DSS69, by genome mining.
View Article and Find Full Text PDFThree dimensional (3D) extrusion bioprinting aims to replicate the complex architectures and functions of natural tissues and organs. However, the conventional hydrogel and new-emerging microgel bioinks are both difficult in achieving simultaneously high shape-fidelity and good maintenance of cell viability/function, leading to limited amount of qualified hydrogel/microgel bioinks. Herein, a universal strategy is reported to construct high-performance microgel assembly (MA) bioinks by using epigallocatechin gallate-modified hyaluronic acid (HA-EGCG) as coating agent and phenylboronic acid grafted hyaluronic acid (HA-PBA) as assembling agent.
View Article and Find Full Text PDFInspired by selective ion transport in biological membrane proteins, researchers developed artificial ion channels that sieve monovalent cations, catering to the increasing lithium demand. In this work, we engineered an ion transport channel based on the confined ice within two-dimensional (2D) capillaries and found that the permselectivity of monovalent cations depends on the anisotropy of the confined ice. Particularly, the 2D confined ice showed an anomalous lithium selective transport along the (002) direction in the vermiculite capillary, with the Li/Na and Li/K permselectivity reaching up to 556 ± 86 and 901 ± 172, respectively, superior to most ion-selective channels.
View Article and Find Full Text PDFHomosporous lycophytes (Lycopodiaceae) are a deeply diverged lineage in the plant tree of life, having split from heterosporous lycophytes ( and ) ~400 Mya. Compared to the heterosporous lineage, Lycopodiaceae has markedly larger genome sizes and remains the last major plant clade for which no chromosome-level assembly has been available. Here, we present chromosomal genome assemblies for two homosporous lycophyte species, the allotetraploid and the diploid .
View Article and Find Full Text PDFLand resources are the material basis for human survival and development. Rapid economic development in the past has resulted in the over-utilization of land, and the undervaluation of land in market transactions has further exacerbated the loss of land benefits. This calls for monitoring the quantity and quality of land and reversing the undervaluation of land to reduce the waste of land resources.
View Article and Find Full Text PDFIslet transplantation to restore endogenous insulin secretion is a promising therapy for type 1 diabetes in clinic. However, host immune rejection seriously limits the survival of transplanted islets. Despite of the various encapsulation strategies and materials developed so far to provide immune isolation for transplanted islets, long-term blood glucose regulation is still difficult due to the inherent defects of the encapsulation materials.
View Article and Find Full Text PDFJ Environ Manage
December 2023
A good understanding of the power system resilience is necessary for optimizing the investment strategies and supporting the emergency rescue, but the existing quantitative estimation results based on real outage events are still lacked due to the data limitations. Therefore, this study first establishes a unified framework to measure the power system resilience under different natural disasters, by integrating the electricity performance curve with the dynamic inoperability input-output model. Then, a database of 285 Chinese historical big power outage events caused by natural disasters is established, and the city-level power system resilience values are estimated.
View Article and Find Full Text PDFCrassulacean acid metabolism (CAM) has high water-use efficiency (WUE) and is widely recognized to have evolved from C photosynthesis. Different plant lineages have convergently evolved CAM, but the molecular mechanism that underlies C-to-CAM evolution remains to be clarified. Platycerium bifurcatum (elkhorn fern) provides an opportunity to study the molecular changes underlying the transition from C to CAM photosynthesis because both modes of photosynthesis occur in this species, with sporotrophophyll leaves (SLs) and cover leaves (CLs) performing C and weak CAM photosynthesis, respectively.
View Article and Find Full Text PDFIntroduction: Infectious meningitis and encephalitis (ME) are life-threatening conditions are caused by various pathogens. Conventional laboratory tests with low sensitivity and specificity cannot help with early diagnosis.
Methods: A prospective study using the novel multiplex PCR detection for 18 pathogens of ME (MME-18) was conducted to investigate the clinical utilization and the epidemiology characteristics of ME in southwestern China.
As a basic natural and strategic resource, water is of great significance to the sustainable development of economies and societies. Owing to population growth, industrialization, the acceleration of urbanization, and global warming, water poverty is gradually increasing in some parts of the world. Effectively assessing water poverty from different dimensions is still a serious challenge for global water resources planning.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
February 2023
The emergence of a series of problems, such as serious water environment pollution and flood disasters, leads to an increase in an urban water resources system's vulnerability and pressure. In order to alleviate an urban water resources crisis, calculating the water resources system resilience (WRSR) and identifying its impact factors are essential. This paper constructed a resilience evaluation framework of the "Economy-Social Development-Infrastructure-Water Resources-Ecological Environment" water resources system from three stages, i.
View Article and Find Full Text PDFThe management of agricultural water pollution is crucial to alleviate the water crisis and promote regional sustainable development. Therefore, it is necessary to clarify the spatial-temporal variation characteristics of the agricultural grey water footprint (GWF) and accurately identify its main influencing factors, aiming at formulating differentiated regional management strategies. Based on this, the agricultural GWFs of 31 provincial regions in China from 2011 to 2019 were firstly calculated, and then the spatial-temporal variation characteristics of agricultural GWF were analyzed using the ArcGIS software and Standard Deviational Ellipse (SDE) method.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
November 2022
PM2.5 is a bad output of China's improved industrialization and rapid economic development, which seriously threatens people's health and greatly hinders the sustainable economic development. Studying the socio-economic driving factors of PM2.
View Article and Find Full Text PDFUnder the background that China puts forth the goals of "Emission Peak" and "Carbon Neutrality", heavily polluting corporations as the main source of carbon emissions, whether the restriction of carbon emission disclosure could promote the transformation and upgrading of heavily polluting corporations to raise their value, is a problem worthy of in-depth study. This paper selected listed companies in heavily pollution industries from 2009 to 2019 as the research samples, and analyzed the impact of carbon emission disclosure on short-term and long-term performance based on the perspective of ownership structure heterogeneity. This paper also discussed the moderating effect of carbon emission disclosure on state-owned enterprises and private enterprises taking into account government environmental regulations, media evaluation, and corporate image management based on the Gatekeeper Theory.
View Article and Find Full Text PDFIdentifying the high-quality economic growth pathways under the requirements of water conservation and water pollution reduction is pivotal to realize regional sustainable development. Combined with the theory of resource and environmental value, sustainable development, and environmental accounting, this paper innovatively introduces water resource liability (WRL) to measure water environmental pressure. This study takes the Yangtze River Economic Belt (YREB) as the research area and firstly conducts a spatial-temporal analysis of the WRL change in this region from 2013 to 2018.
View Article and Find Full Text PDFThe deformation failure mechanism and permeability characteristics of loaded coal sandstone samples under triaxial stress loading were analyzed based on the experimental platform of the coal-rock fluid solid coupling triaxial servo system. The results show that the stress-strain curve of coal intercalated sandstone can be divided into five stages: compaction closure, elastic deformation, stable fracture expansion, unstable fracture expansion, and post-peak strain softening. With the increase of confining pressure, the peak strength and residual strength of the sample increase linearly with the confining pressure.
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