Publications by authors named "Peng Kai"

Objectives: In this study, we aimed to explore the association between the choice of empirical antibiotic therapy and outcomes in ED patients with sepsis.

Methods: Patients admitted to ED with sepsis were identified from a single center in the United States, and the data is stored in the MIMIC-IV-ED database. Propensity score matched model was used to match patients receiving empirical mono or combination antibiotic therapy.

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Despite improved sensitivity of iontronic pressure sensors with microstructures, structural compressibility and stability issues hinder achieving exceptional sensitivity across a wide pressure range. Herein, the interplay between ion concentration, mechanical properties, structural geometry, and aspect ratio (AR) on the sensitivity of lithium bis(trifluoromethanesulfonyl) imide/thermoplastic polyurethane (LiTFSI/TPU) ionogel is delved into. The results indicate that cones exhibit superior compressibility compared to pyramids and hemispheres, manifesting in an enhanced sensitivity toward the LiTFSI/TPU ionogel.

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The Sc2.0 global consortium to design and construct a synthetic genome based on the Saccharomyces cerevisiae genome commenced in 2006, comprising 16 synthetic chromosomes and a new-to-nature tRNA neochromosome. In this paper we describe assembly and debugging of the 902,994-bp synthetic Saccharomyces cerevisiae chromosome synXVI of the Sc2.

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The articular cartilage is characterized by its gradient hierarchical structure, which exhibits excellent lubrication and robust load-bearing properties. However, its inherent difficulty in self-repair after damage presents numerous formidable challenges for cartilage repair. Inspired by the unique structure of articular cartilage, a biomimetic bilayer hydrogel composed of PAM (polyacrylamide) and PAM/SA (sodium alginate) is prepared using a two-step in-situ swelling method.

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This study examined the diversity and responses of intestinal microbiota in hybrid grouper ( ♀ × ♂) fed diets with varying levels of fishmeal replaced by black soldier fly larvae (BSFL). The 10% BSFL substitution (BSFL10) group showed the highest levels of trypsin and amylase. Substituting fishmeal with 30% and 50% BSFL weakened the intestinal wall, resulting in vacuoles, sparse striatal boundaries, and fewer villi.

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The Conference 2024 provides a platform to promote the development of an innovative scientific research ecosystem for microbiome and One Health. The four key components - Technology, Research (Biology), Academic journals, and Social media - form a synergistic ecosystem. Advanced technologies drive biological research, which generates novel insights that are disseminated through academic journals.

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To clarify the genetic diversity and structure of the nucleus population of F1-generation , this study utilized 15 pairs of highly polymorphic microsatellite primers to analyze the simple sequence repeat (SSR) markers and genetic diversity in 15 full-sib families of . . A total of 112 alleles () and 60.

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Exciton-polariton condensates, due to their nonlinear and coherent characteristics, have been employed to construct spin Hamiltonian lattices for potentially studying spin glass, critical dephasing, and even solving optimization problems. Here, we report the room-temperature polariton condensation and polaritonic soft-spin XY Hamiltonian lattices in an organic-inorganic halide perovskite microcavity. This is achieved through the direct integration of high-quality single-crystal samples within the cavity.

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Article Synopsis
  • Nonlinear optical responses in 2D materials can enable advanced free-space optical neuromorphic computing, offering a blend of high performance and tunability for diverse functions.
  • Challenges arise from conventional methods that struggle to balance performance and flexibility, often leading to compromises.
  • A new approach using bare molybdenum disulfide arrays enhances modulation performance and energy efficiency while improving tunability, showcasing the potential for optical artificial neural networks and digital processing in neuromorphic applications.
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In this study, the size of molten pool and the porosity of parts under different processing parameters are studied using numerical simulation. According to the results, the appropriate processing parameters were selected to simulate the temperature and residual stress distribution during the forming process of body-centered cube (BCC), face-centered cube (FCC) and rhombic dodecahedron (Dode) lattice structures. In addition, three lattice structures were fabricated via selective laser melting (SLM) technology, and quasi-static compression experiments were carried out to study their mechanical properties.

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  • * Researchers conducted an in-depth study using various public databases to examine how LY6H is expressed across 33 different human tumors and investigated its implications for diagnosis, prognosis, and immune response.
  • * Findings indicated that LY6H is significantly overexpressed in many cancer types, suggesting its potential as a diagnostic marker and its involvement in immune cell regulation, with varying effects on prognosis depending on the type of cancer.
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  • The study aimed to explore how the condition of the anterior cruciate ligament (ACL) affects the results of mobile-bearing medial unicompartmental knee arthroplasty (UKA) in patients with anteromedial osteoarthritis.
  • Researchers analyzed data from 128 patients who underwent the surgery, categorizing them based on their ACL condition as normal, synovial defect, or longitudinal split, and found no significant differences in key baseline demographics across these groups.
  • At follow-up (around 40 months), all groups showed no significant cartilage wear or complications, and there were improvements in knee range of motion and pain scores, indicating that ACL integrity did not negatively impact short- and mid-term outcomes of the surgery.
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Over the past decade, nanopore sequencing has experienced significant advancements and changes, transitioning from an initially emerging technology to a significant instrument in the field of genomic sequencing. However, as advancements in next-generation sequencing technology persist, nanopore sequencing also improves. This paper reviews the developments, applications, and outlook on nanopore sequencing technology.

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Lightweight thin-walled parts are widely used in the aviation and aerospace industries, and with the further increase in the complexity of their features, the traditional manufacturing process can no longer fully meet the high requirements of industrial component manufacturing. In this work, thin-walled parts are processed by Laser based powder bed fusion of metals (PBF-LB/M), and the effects of process parameters on residual stress, hardness, mechanical properties and microstructure of thin-walled parts are systematically investigated. The simulation results show that the maximum equivalent residual stresses are distributed in the combination of the solid and the substrate, and the minimum equivalent residual stresses are mainly distributed in the top two ends and the middle part of the solid, and the stress distribution is symmetrical.

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The Eastern Route of the South-to-North Water Diversion Project (ER-SNWDP) represents a crucial initiative aimed at alleviating water scarcity in China's northern region. Understanding the dynamics governing the composition and assembly processes of micro-eukaryotic communities within the canal during different water diversion periods holds paramount significance for the effective management of the ER-SNWDP. Our study systematically tracks the dynamics of the micro-eukaryotic community and its assembly processes along the 1045.

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Globally, anthropogenic disturbance and climate change caused a rapid decline of submerged macrophytes in lake ecosystems. (), a species that germinates in winter, explosively expanded throughout many Chinese lakes, yet the underlying mechanism remained unclear. Here, this study examined the long-term changes in the distribution patterns of in Lake Gaoyou by combining remote sensing images and hydrometeorological data from 1984 to 2022 and water quality data from 2009 to 2022.

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  • Ex vivo lung perfusion (EVLP) is a technique that assesses and restores donor lungs, particularly beneficial for marginal lungs from donation after circulatory death (DCD).
  • The study examined the impact of milk fat globule epidermal growth factor 8 (MFG-E8) on lung function during EVLP using a swine model, revealing that MFG-E8 enhanced blood oxygen levels and reduced inflammation markers compared to other preservation methods.
  • The results indicate that using MFG-E8 during EVLP can improve lung graft performance, suggesting its potential for clinical application to expand the availability of DCD lungs for transplantation.
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  • The Microbiome Protocols eBook (MPB) connects researchers by providing essential protocols for microbiome experiments and data analysis.
  • The first edition, released in 2020, included 152 well-organized protocols and received positive feedback from the scientific community.
  • Researchers are now encouraged to contribute their own protocols for the upcoming 2nd edition to help further microbiome research.
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  • A photonic topological insulator allows for stable directional movement of edge states and is resistant to defects.
  • The researchers demonstrate a new method to achieve polariton condensation at room temperature using specialized materials, improving upon past limitations.
  • Their findings show a significant energy gap and strong nonlinear behavior in a polariton system, paving the way for exploring other topological interactions in future studies.
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Spinal cord injury (SCI) is a type of central nervous system (CNS) injury in which ferroptosis is becoming a promising target for treatment. Alpha-tocopherol (Vitamin E, Vit E) is a compound with anti-ferroptosis activity. The mechanism of alpha-tocopherol in regulating ferroptosis after SCI has not been deeply studied.

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The restoration of lakes and their buffer zones is crucial for understanding the intricate interplay between human activities and natural ecosystems resulting from the implementation of environmental policies. In this study, we investigated the ecological restoration of shallow lakes and buffer zones in the Yangtze-Huaihe River Basin, specifically focusing on the removal of polder and aquaculture enclosure areas within the lakes. By examining data from eight shallow lakes and their corresponding buffer zones, encompassing lake morphology, water quality parameters, and land use/land cover (LULC) data spanning from 2008 to 2022, which shed light on the complex relationships involved.

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  • The tmexCD-toprJ gene cluster is responsible for multidrug resistance, especially affecting antibiotics like tigecycline, but its origins and spread were previously unclear.* -
  • Through an analysis of over 73,000 bacterial genomes and metagenomic datasets, researchers found that tmexCD-toprJ primarily originates from Pseudomonas aeruginosa in human hosts, particularly in Asia and North America.* -
  • The study suggests that tmexCD-toprJ evolved from a specific clone of P. aeruginosa and shows that a mobile genetic structure aids in its transmission to other bacterial species.*
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Unlabelled: Tigecycline and colistin were referred to as the "last resort" antibiotics in defending against carbapenem-resistant, Gram-negative bacterial infections, and are currently widely used in clinical treatment. However, the emergence and prevalence of plasmid-mediated (X4) and genes pose a serious threat to the therapeutic application of tigecycline and colistin, respectively. In this research, a tigecycline- and colistin-resistant bacteria resensitization system was developed based on efficient and specific DNA damage caused by Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-Associated Protein 9 (Cas9) nucleases.

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  • Sulfonamide antibiotics, especially sulfamethoxazole (SMX) and its metabolite N4-acetyl-sulfamethoxazole (NASMX), are found in soils due to livestock and sewage, but their effects on rice plants were previously unclear.
  • The study reveals that both SMX and NASMX are taken up by rice roots and can be translocated to the shoots, with NASMX accumulating more in the plants than SMX.
  • Findings indicate that NASMX can convert back to SMX in rice and disrupt various metabolic pathways in the plants, raising concerns about food safety and the risks of antibiotic contamination.
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Ferroptosis therapy, which uses ferroptosis inducers to produce lethal lipid peroxides and induce tumor cell death, is considered a promising cancer treatment strategy. However, challenges remain regarding how to increase the accumulation of reactive oxygen species (ROS) in the tumor microenvironment (TME) to enhance antitumor efficacy. In this study, a hyaluronic acid (HA) encapsulated hollow mesoporous manganese dioxide (H-MnO) with double-shell nanostructure is designed to contain iron coordinated cyanine near-infrared dye IR783 (IR783-Fe) for synergistic ferroptosis photodynamic therapy against tumors.

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