17 research outputs found

    Updatings of the risk attitude parameter with different values of parameter <i>σ</i>.

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    <p>A larger <i>σ</i>-value corresponds to a larger change rate of .</p

    Evolution of the system with endogenous risk attitudes (<i>σ</i> = 0.9).

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    <p>Fig 3(a)~3(d) shows the influences of parameters <i>α</i>, <i>β</i> and <i>θ</i> on both steady state and evolution process of the dynamic system.</p

    Comparison of effects between two different risk attitude evolution schemas.

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    <p>Fig 5(a) corresponds to the case of endogenous risk attitudes, and Fig 5(b) corresponds to the case of exogenous risk attitudes.</p

    Notions and the corresponding definitions.

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    <p>Notions and the corresponding definitions.</p

    The effects of traveler risk-taking behaviors on system evolution processes.

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    <p>Fig 4(a) and 4(b) compare the effect difference between risk aversion and risk proneness attitudes. Fig 4(c) and 4(d) show the influences of parameter σ on both fluctuation function Θ<sup><i>t</i></sup> and endogenous risk attitude .</p

    Data_Sheet_1_Epidemiological characteristics of occupational chemical poisonings in Zhejiang, China from 2006 to 2020: A descriptive analysis.PDF

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    ObjectiveAs the second most common occupational disease in China, occupational poisoning is one of the major public health problems that seriously affect workers' health. This study aimed to investigate the epidemiological and occupational characteristics of acute and chronic occupational poisoning cases in Zhejiang Province, so as to provide a scientific basis for proposing intervention measures and preventive strategies of occupational poisoning.MethodsThe data on occupational poisoning cases in Zhejiang Province from 2006 to 2020 was derived from the National Occupational Disease Network Direct Report System. A descriptive statistical analysis was employed on this data utilizing R software.ResultsFrom 2006 to 2020, 1,008 occupational poisoning cases were reported in Zhejiang Province, with a downward trend since 2007. Of these cases, 81.94% were chronic poisoning and 18.06% were acute poisoning. Ningbo reported the most occupational poisoning cases among the 11 cities in Zhejiang Province, accounting for 20.34% of the total cases. Besides, the occupational poisoning cases in Wenzhou, Jiaxing, and Shaoxing also accounted for 18.15%, 18.06%, and 17.76% of the total number of cases, respectively. Occupational poisoning in male were 693 cases and in female 315 cases. Most of the occupational poisoning cases studied involved people aged between 40 and 49 years (38.19%). The length of work in chronic occupational poisoning cases was significantly higher than that of acute occupational poisoning cases (P ConclusionAlthough the cases of occupational poisoning in Zhejiang Province have declined, more comprehensive and effective prevention and control measures are still needed. More attention ought to be paid to the management of key points according to the epidemiological and occupational characteristics of occupational poisoning cases.</p

    GaNb<sub>11</sub>O<sub>29</sub> Nanowebs as High-Performance Anode Materials for Lithium-Ion Batteries

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    M–Nb–O compounds have been considered as promising anode materials for lithium-ion batteries (LIBs) because of their high capacities, safety, and cyclic stability. However, very limited M–Nb–O anode materials have been developed thus far. Herein, GaNb<sub>11</sub>O<sub>29</sub> with a shear ReO<sub>3</sub> crystal structure and a high theoretical capacity of 379 mAh g<sup>–1</sup> is intensively explored as a new member in the M–Nb–O family. GaNb<sub>11</sub>O<sub>29</sub> nanowebs (GaNb<sub>11</sub>O<sub>29</sub>-N) are synthesized based on a facile single-spinneret electrospinning technique for the first time and are constructed by interconnected GaNb<sub>11</sub>O<sub>29</sub> nanowires with an average diameter of ∼250 nm and a large specific surface area of 10.26 m<sup>2</sup> g<sup>–1</sup>. This intriguing architecture affords good structural stability, restricted self-aggregation, a large electrochemical reaction area, and fast electron/Li<sup>+</sup>-ion transport, leading to a significant pseudocapacitive behavior and outstanding electrochemical properties of GaNb<sub>11</sub>O<sub>29</sub>–N. At 0.1 C, it shows a high specific capacity (264 mAh g<sup>–1</sup>) with a safe working potential (1.69 V vs Li/Li<sup>+</sup>) and the highest first-cycle Coulombic efficiency in all of the known M–Nb–O anode materials (96.5%). At 10 C, it exhibits a superior rate capability (a high capacity of 175 mAh g<sup>–1</sup>) and a durable cyclic stability (a high capacity retention of 87.4% after 1000 cycles). These impressive results indicate that GaNb<sub>11</sub>O<sub>29</sub>-N is a high-performance anode material for LIBs

    Application of the Benchmark Dose (BMD) Method to Identify Thresholds of Cadmium-Induced Renal Effects in Non-Polluted Areas in China

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    <div><p>The benchmark dose (BMD) method has been increasingly used to assess the health risks of cadmium (Cd) in epidemiological studies. The aim of our study was to estimate the threshold levels of urinary Cd (UCd) using the BMD method in a general population of Jiangshan City, Zhejiang Province of China. In our study, a total of 934 people (469 men, 465 women) were recruited and morning urine samples were collected from all the participants. Levels of Cd, creatinine, and renal dysfunction indicators such as retinol binding protein (RBP), <i>β</i>2-microglobulin (<i>β</i>2-MG), and N-acetyl-<i>b</i>-glucosaminidase (NAG) in urine were detected for analysis of BMD and BMD low (BMDL) of UCd. RBP, <i>β2</i>-MG, and NAG in urine all correlated significantly (<i>P</i> < 0.001) with UCd except of age (<i>P</i> = 0.767). When the benchmark response (BMR) was 5%, the BMD/BMDL of UCd for RBP, <i>β</i>2-MG, and NAG was 1.69/ 0.89, 1.24/0.62, 0.85/0.49 μg/g Cr in men and 1.70/0.76, 1.35/0.64, 1.36/0.65 μg/g Cr in women, respectively. If the BMR was set at 10%, the BMD/BMDL of UCd for RBP, <i>β</i>2-MG, and NAG was 2.44/1.59, 2.09/1.30, 1.80/1.04 μg/g Cr in men and 2.43/1.53, 2.10/1.34, 2.31/1.37 μg/g Cr in women, respectively. Our results provided evidence for Cd-induced tubular effects in cadmium non-polluted areas in China. Both <i>β</i>2-MG and NAG were more sensitive than RBP in response to Cd exposure. But <i>β</i>2-MG was the most sensitive indicator in women, and NAG was the most sensitive one in men.</p></div
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