E-commerce has experienced rapid growth over the past decade, creating new challenges for last-mile and same-day delivery services. In response to the explosive increase in online orders and the emerging role of crowdsourcing in urban logistics, we introduce and formally define the Two-Echelon Multi-Depot Crowdsourcing Split Delivery Order Fulfillment Problem (2E-MDCSDOFP). This problem extends traditional two-echelon vehicle routing by integrating a crowdsourced delivery mechanism in the second echelon, allowing independent agents to perform customer deliveries.
View Article and Find Full Text PDFAflatoxin B1 (AFB1) is a prevalent contaminant in food and feed matrices, known for its hepatotoxic effects. Its metabolic breakdown generates reactive oxygen species (ROS), leading to oxidative stress and subsequent liver damage. Mitigating oxidative stress is, therefore, essential for ameliorating the hepatocellular damage and systemic toxicity caused by AFB1.
View Article and Find Full Text PDFThis study aims to provide a non-contact detection of liquid composition inside containers using Microwave Radar Cross-section (RCS) measurement technology. Firstly, it analyzes the limitations of traditional near-infrared spectroscopy methods and proposes the necessity of introducing microwave detection methods. The research demonstrates through experiments a significant correlation between polar substances like total acid content and radar scattering capability, showing microwave radar's effectiveness in reflecting the polarity characteristics of liquids.
View Article and Find Full Text PDFThis study explored the link between diet and major depressive disorder (MDD) to provide fresh insights for MDD prevention. Single nucleotide polymorphisms (SNPs) associated with common foods, such as meat, bread, cheese, fruits, cereals, vegetables, and four alcohol intake categories, were leveraged as instrumental variables. Accordingly, this study employed the inverse variance weighting (IVW) method to evaluate the genetically predicted associations of different food phenotypes with MDD risk.
View Article and Find Full Text PDFGrapevine breeding is hindered by a limited understanding of the genetic basis of complex agronomic traits. This study constructs a graph-based pangenome reference (Grapepan v.1.
View Article and Find Full Text PDFRice wine, known as yellow wine in China and Japan, possesses considerable nutritional value and holds significant global influence. This study addresses the challenge of preserving rice wine, which is prone to rancidity due to its low alcohol content. Conventional storage techniques employing pottery jars often result in substantial spoilage losses.
View Article and Find Full Text PDFThe cultivated apple (Malus domestica Borkh.) is a cross-pollinated perennial fruit tree of great economic importance. Earlier versions of apple reference genomes were unphased, fragmented, and lacked comprehensive insights into the apple's highly heterozygous genome, which impeded advances in genetic studies and breeding programs.
View Article and Find Full Text PDFNitrogen (N) is regarded as an essential macronutrient and is tightly associated with carbon (C) metabolism in plants. The transcriptome data obtained from this study showed that the expression level of the apple basic leucine zipper (bZIP) transcription factor (TF) was up-regulated in 'Oregon Spur Delicious' ( Borkh.) apple fruits under nitrogen supply.
View Article and Find Full Text PDFAs China's coal mines have transitioned to deep mining, the ground stress within the coal seams has progressively increased, resulting in reduced permeability and poor wetting ability of conventional wetting agents. Consequently, these agents have become inadequate in fulfilling the requirements for preventing washouts during deep mining operations. In response to the aforementioned challenges, a solution was proposed to address the issues by formulating a composite wetting agent.
View Article and Find Full Text PDFThe iodide vacancy defects generated during the perovskite crystallization process are a common issue that limits the efficiency and stability of perovskite solar cells (PSCs). Although excessive ionic iodides have been used to compensate for these vacancies, they are not effective in reducing defects through modulating the perovskite crystallization. Moreover, these iodide ions present in the perovskite films can act as interstitial defects, which are detrimental to the stability of the perovskite.
View Article and Find Full Text PDFJ Cell Biol
February 2024
Risk Manag Healthc Policy
November 2023
Background: In recent years, the medical industry has been significantly impacted by internet technology, especially with the growing integration of online and offline channel within public hospitals.
Objective: Our study aims to explore the effects of hospitals' online-offline channel integration on doctors' offline visits and investigate how the effects of integration varied across doctors with different professional titles.
Methods: Our study employs a panel dataset from a large comprehensive hospital in China and conducts staggered difference-in-differences (DID) approach.
Proinflammatory factors play important roles in the pathogenesis of African swine fever virus (ASFV), which is the causative agent of African swine fever (ASF), a highly contagious and severe hemorrhagic disease. Efforts in the prevention and treatment of ASF have been severely hindered by knowledge gaps in viral proteins responsible for modulating host antiviral responses. In this study, we identified the I10L protein (pI10L) of ASFV as a potential inhibitor of the TNF-- and IL-1-triggered NF-B signaling pathway, the most canonical and important part of host inflammatory responses.
View Article and Find Full Text PDFAcidity is a determinant of the organoleptic quality of apple, whereas its regulatory mechanism under water stress remains obscure. Fruit from apple 'Yanfu 3' of Fuji trees grown under normal water irrigation (CK), excessive water deficit treatment (DRT) and excessive water irrigation treatment (WAT) were sampled at 85, 100, 115, 130, 145, 160 and 175 days after full bloom designated stages S1, S2, S3, S4, S5, S6 and S7, respectively. DRT treatment reduced the individual fruit weight and fruit moisture content, and increased fruit firmness.
View Article and Find Full Text PDFNitrogen nutrition participates in many physiological processes and understanding the physiological and molecular mechanisms of apple responses to nitrogen is very significant for improving apple quality. This study excavated crucial genes that regulates sugar metabolism in response to nitrogen in apples through physiology and transcriptome analysis, so as to lay a theoretical foundation for improving fruit quality. In this paper, the content of sugar and organic acid in apple fruit at different developmental periods under different nitrogen levels (0, 150, 300, and 600 kg·hm) were determined.
View Article and Find Full Text PDFBRI1-EMS-Suppressor 1 (BES1) regulates plant growth, development, and stress resistance, and plays a pivotal role in the brassinosteroid (BR) signal transduction pathway. In this study, a total of 12 BES1 genes were identified in the grape (Vitis vinifera) genome. Phylogenetic, structure, and motif sequence analyses of these genes provided insights into their evolutionary characteristics.
View Article and Find Full Text PDFThe steroidogenic acute regulatory protein-related lipid transfer domain (STARD) forms a protein that can bind membrane-derived phospholipid second messengers and plasma membranes. Although it has been reported in many plants, the evolutionary relationship of the STARD gene family has not been systematically analyzed, and functions of the HD-START and HD-START-MEKHLA domain subgroup genes under hormone and abiotic stress are also unclear in grapes. This study identified and analyzed 23 VvSTARD genes, which were distinctly divided into five subgroups according to five conserved domain types.
View Article and Find Full Text PDFJ Phys Chem B
January 2006
We present a surfactant-assisted solvothermal approach for the controllable synthesis of a PbS nanocrystal at low temperature (85 degrees C). Nanotubes (400 nm in length with an outer diameter of 30 nm), bundle-like long nanorods (about 5-15 mum long and an average diameter of 100 nm), nanowires (5-20 mum in length and with a diameter of 20-50 nm), short nanorods (100-300 nm in length and an axial ratio of 5-10), nanoparticles (25 nm in width with an aspect ratio of 2), and nanocubes (a short axis length of 10 nm and a long axis length of 15 nm) were successfully prepared and characterized by transmission electron microscopy, scanning electron microscopy, and powder X-ray diffraction pattern. A series of experimental results indicated that several experimental factors, such as AOT concentration, ratio of [water]/[surfactant], reaction time, and ratio of the reagents, play key roles in the final morphologies of PbS.
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