Many animals face significant challenges in locating and acquiring resources that are unevenly distributed in space and time. In the case of nonhuman primates, it remains unclear how individuals remember goal locations and whether they navigate using a route-based or a coordinate-based mental representation when moving between out-of-sight feeding and resting sites (i.e.
View Article and Find Full Text PDFCirculating lactate is a critical biomarker for sepsis-induced acute lung injury (S-ALI) and is strongly associated with poor prognosis. However, whether elevated lactate directly promotes S-ALI and the specific mechanism involved remain unclear. Here, this work shows that lactate causes pulmonary endothelial glycocalyx degradation and worsens ALI during sepsis.
View Article and Find Full Text PDFNitrogen (N2) has long been considered as stable atmospheric reservoir for N element and has a persistence time of hundreds of years. This study reveals that oxygen (O2) at typical tropospheric concentrations can rapidly activate N2, leading to substantial production of nitrous oxide (N2O), the third most impactful greenhouse gas, at rates approaching 2.83 ± 0.
View Article and Find Full Text PDFDeveloping sufficiently effective non-precious metal catalysts for large-current-density hydrogen production is highly significant but challenging, especially in low-voltage hydrogen production systems. Here, we innovatively report high-entropy alloy nanoflower array (HEANFA) electrodes with optimizable reaction pathways for hydrazine oxidation-assisted hydrogen production at industrial-grade current densities. Atomic-resolution structural analyses confirm the single-phase solid-solution structure of HEANFA.
View Article and Find Full Text PDFLi-rich Mn-based cathode materials exhibit a remarkable reversible specific capacity exceeding 250 mAh g, positioning them as the preferred choice for the next generation of high-energy density lithium-ion battery cathode materials. However, their inferior rate and cycling performance pose significant challenges. In this context, a Li-rich material incorporating an expanded fast Li-ion diffusion network has been successfully synthesized.
View Article and Find Full Text PDFBackground: Early recognition of sinus invasion for meningiomas matters the clinical intervention. Therefore, we retrospectively investigated the relationship between peritumoral vessel features on magnetic resonance venography (MRV) and sinus invasion status.
Methods: Images of phase contrast MRV (PC-MRV, n=46) and contrast-enhanced MRV (CE-MRV, n=39) were independently assessed by four experienced neuroradiologists, including the adjacent sinus status, the peritumoral vessel count and diameter-associated parameters.
Chemotherapeutic drugs often fail to localize efficiently to tumors when administered intravenously, causing off-target effects. This study proposes an autologous erythrocyte (ER)-anchoring strategy to improve chemotherapy efficacy and reduce side effects. Utilizing a modified hemodialysis instrument, a closed-system drug-transfer device was developed for autologous ER procurement and immunogenicity mitigation.
View Article and Find Full Text PDFEnviron Sci Technol
December 2024
The presence of low-dose radiation (LDR) in the environment has become more prevalent. However, the effect of LDR exposure on the immune system remains elusive. Here, we interestingly found that LDR specifically elevated the percentage of CD4IFNγ Th1 splenocytes, both in vitro and in vivo, without affecting the percentage of CD8IFNγ Tc1 cells and regulatory T cells.
View Article and Find Full Text PDFBackground: Recently, the popularity of dual-layer flat-panel detector (DL-FPD) based dual-energy cone-beam CT (CBCT) imaging has been increasing. However, the image quality of dual-energy CBCT remains constrained by the Compton scattered x-ray photons.
Purpose: The objective of this study is to develop a novel scatter correction method, named e-Grid, for DL-FPD based CBCT imaging.
Objective: To evaluate the anesthetic effects of sufentanil and fentanyl in pediatric surgery.
Methods: We conducted a comprehensive search across multiple databases, including Wanfang, CNKI, Chinese Biomedical Literature, VIP, Embase, PubMed, Cochrane Library, and Web of Science. Studies were retrieved to screen randomized controlled trials (RCTs) comparing sufentanil and fentanyl use in children during surgery.
Parkinson's disease (PD) is characterized by the deposition of misfolded α-synuclein (α-syn) in the brain. Converging evidence indicates that the intracellular transmission and subsequent templated amplification of α-syn are involved in the onset and progression of PD. However, the molecular mechanisms underlying the cell-to-cell transmission of pathological α-syn remain poorly understood.
View Article and Find Full Text PDFBackground: We used a social network approach to identify influential community organizations within integrated public health networks in three regions in Texas, US: Houston/Harris County, Cameron County, and Northeast Texas. The study aimed to understand how network structures influence organizational performance in COVID-19 response.
Methods: In collaboration with community partners in each region, we administered a snowball sampling network data collection.
Fungal secondary metabolites have been increasingly sought after as an alternative strategy to herbicides and a source of new medicines. Twenty spirobisnaphthalenes (SBNs) were isolated from the fermentation broth of sp. YUD20003 from the herb (L.
View Article and Find Full Text PDFMetabolic studies at the single cell level can directly define the cellular phenotype closest to physiological or disease states. However, the current single cell metabolome (SCM) study using mass spectroscopy has difficulty giving a complete view of the metabolic activity in the cell, and the prediction of the metabolism-phenotype relationship is limited by the potential inconsistency between transcriptomic and metabolic levels. Here, the single-cell simultaneous metabolome and transcriptome profiling method (scMeT-seq) is developed at one single cell, based on sub-picoliter sampling from the cell for the initial metabolome profiling followed by single cell transcriptome sequencing.
View Article and Find Full Text PDFEmerging studies have demonstrated that M1 macrophage polarization and oxidative stress play important roles in calcium oxalate (CaOx) induced kidney injury, which leads to increased crystals deposition. ROS scavenging nanozymes and kidney-targeted nanoparticles for antioxidant drugs delivery have emerged as an arisen methodology for kidney injury therapy. However, cell membrane biomimetic-modified nanozymes as anti-inflammatory drug delivery systems for the treatment of kidney injury is rarely reported.
View Article and Find Full Text PDFWith the improvement of industry, the connectivity of electronic devices gradually shift from wired to wireless. As a solution for power delivery, the non-contact power transfer holds promising ways to charge for moving terminals, enabling battery-free sensing, processing, and communication. Based on a dual-band metasurface, this study proposes an adaptive wireless-powered network (AWPN) to realize the simultaneous wireless localization and non-contact power supply.
View Article and Find Full Text PDFEfficient utilization of resources is crucial for the sustainable development of the lithium-ion battery industry. Although the traditional R m space group LiCoO can provide a current advanced discharge capacity of 215-220 mAh g⁻¹ at an upper cut-off voltage of 4.6 V (relative to Li⁺/Li), it still falls far short of its theoretical specific capacity of 273 mAh g⁻¹, and exhibits structural instability and labile oxygen loss, leading to rapid capacity degradation.
View Article and Find Full Text PDFBackground: Delayed healing and non-healing of bone defects pose significant challenges in clinical practice, with metal materials increasingly recognized for their significance in addressing these issues. Among these materials, Strontium (Sr) and Zinc (Zn) have emerged as promising agents for promoting bone repair. Building upon this insight, this research evaluates the impact of a porous Sr@Zn@SiO nanocomposite implant on bone regeneration, aiming to advance the field of bone repair.
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