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  1. Article ; Online: Fuzzy optimal control of multilayer coverage based on radon exhalation dynamics in uranium tailings.

    Zhang, Meirong / Dai, Jianyong

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 4414

    Abstract: Radon exhalation from uranium tailings has seriously affected environmental safety and human health. Many uncertain parameters, such as diffusion coefficient, porosity, percolation rate, material particle size, etc., are related to the diffusion and ... ...

    Abstract Radon exhalation from uranium tailings has seriously affected environmental safety and human health. Many uncertain parameters, such as diffusion coefficient, porosity, percolation rate, material particle size, etc., are related to the diffusion and migration of radon. Moreover, cover materials, cover layers, and cover thickness are the main instruments to control radon exhalation, and the radon reduction effect of single-layer mulching is often inferior to that of the multilayer. Hence, achieving radon control with multilayer coverage under uncertain environment is an urgent problem that must be solved in the area of nuclear safety and radiation environment. In an attempt to address the issue, a dynamic model of radon exhalation with multilayer coverage is constructed using radon percolation-diffusion migration equation, and triangular membership functions inscribe the model parameters; the objective functions of the left and right equations of the model are constructed, and their extreme value intervals are obtained using immunogenetic algorithm. Then, subject to the total cost and thickness of multilayer covering materials, the fuzzy objective and constraint models of radon exhalation are constructed, and the fuzzy aggregation function is reconstructed according to the importance of the fuzzy objective and constraint models, where ultimately, the optimal radon control decision by swarm intelligence algorithm under different possibility levels and importance conditions can be obtained. An example is then used to validate the effectiveness of the radon exhalation model, and to demonstrate that fuzzy optimization provides a database of decision-making schemes regarding multilayer coverage, and guidance for optimal control and flexible construction management.
    Language English
    Publishing date 2023-03-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-31518-7
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A geometric feature of the Newton law of gravitation

    Zhang Meirong

    Journal of Shanghai Normal University (Natural Sciences), Vol 46, Iss 3, Pp 432-

    2017  Volume 438

    Abstract: In the Newton law of gravitation, the most miraculous fact is that the gravity is reciprocally proportional to the square of the distance between particles. In this paper, by assuming that the gravity is along with the line passing through particles and ... ...

    Abstract In the Newton law of gravitation, the most miraculous fact is that the gravity is reciprocally proportional to the square of the distance between particles. In this paper, by assuming that the gravity is along with the line passing through particles and is proportional to the product of masses of particles, we will show that the above fact is equivalent to the geometric requirement that the gravity between two homogeneous balls is equal to that between two particles of the same masses located at the centers of balls. In fact, this will lead to a second-order Euler equation whose physical solution is reciprocally proportional to the square of the distance.
    Keywords Newton law of gravitation ; geometric feature ; integral equation ; Euler equation ; Science (General) ; Q1-390
    Language English
    Publishing date 2017-06-01T00:00:00Z
    Publisher Academic Journals Center of Shanghai Normal University
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Hotspots and research trends of the 'dark side of creativity' in the last decade.

    Zhou, Jie / Zhao, Bin / Zhang, Meirong

    Heliyon

    2023  Volume 9, Issue 10, Page(s) e20392

    Abstract: Creativity can function as a catalyst for social development; however, it also possesses a destructive potential. In recent years, scholars have discovered that creativity harbors a dark side, counterbalancing its positive aspects. This study aims to ... ...

    Abstract Creativity can function as a catalyst for social development; however, it also possesses a destructive potential. In recent years, scholars have discovered that creativity harbors a dark side, counterbalancing its positive aspects. This study aims to offer a comprehensive understanding of the dynamics surrounding research on the 'dark side of creativity', disseminate the findings, and provide a valuable reference for future researchers in the field. To achieve this objective, bibliometric methods were employed to visualize the overall landscape of the literature, identify prevailing topics, significant works, highly cited authors, and forecast future trends. The following conclusions were drawn: (1) Society presently places substantial importance on investigating the 'dark side of creativity'. (2) Research exploring this facet of creativity spans across multiple disciplines, fields, and geographical locations. (3) The 'dark side of creativity' exhibits a close association with psychological states and the social environment. (4) Investigations into the 'dark side of creativity' reveal a scientific, diversified, and open research trajectory. (5) Future research is expected to focus on themes such as 'anxiety', 'malevolent creativity', 'COVID-19', 'trait', 'gender', 'depression', 'strategy' as emerging trends.
    Language English
    Publishing date 2023-09-22
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2835763-2
    ISSN 2405-8440
    ISSN 2405-8440
    DOI 10.1016/j.heliyon.2023.e20392
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Influencing factors of meaning in life in patients with advanced lung cancer undergoing radiochemotherapy: A cross-sectional survey.

    Li, Yumei / Zhang, Meirong / Yang, Chunhong / Luo, Yifan

    Asia-Pacific journal of clinical oncology

    2022  Volume 19, Issue 3, Page(s) 403–412

    Abstract: Aim: To examine the factors that influence meaning in life (MiL) in patients with advanced lung cancer who are undergoing radiochemotherapy.: Methods: A cross-sectional, multivariate stepwise regression analysis and structural equation modeling were ... ...

    Abstract Aim: To examine the factors that influence meaning in life (MiL) in patients with advanced lung cancer who are undergoing radiochemotherapy.
    Methods: A cross-sectional, multivariate stepwise regression analysis and structural equation modeling were used to examine factors influencing MiL in 231 patients with lung cancer in an oncology department of a tertiary hospital in China. Their mood state, family care, social support, and psychological distress were measured.
    Results: Sex, marital status, and family income significantly affected MiL (p < .05). MiL was significantly correlated (p < .01) with psychological distress (r = -.203), and most significantly (F = 66.883, p < .01; 46.2% of MiL) with mood state (r = -.631), family care (r = .384), and social support (r = .410).
    Conclusion: To enhance MiL, nurses need to consider patients' mood states and family/social support, as well as tailor patient care toward different sexes and backgrounds. Clinical staff should pay attention to the psychological changes, family care, and social support of patients with advanced lung cancer.
    MeSH term(s) Humans ; Cross-Sectional Studies ; Palliative Care ; Family Support ; Lung Neoplasms/drug therapy ; Lung Neoplasms/radiotherapy ; China ; Quality of Life/psychology
    Language English
    Publishing date 2022-11-06
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2187409-8
    ISSN 1743-7563 ; 1743-7555
    ISSN (online) 1743-7563
    ISSN 1743-7555
    DOI 10.1111/ajco.13888
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  5. Article ; Online: A mathematical model with aberrant growth correction in tissue homeostasis and tumor cell growth.

    Zhang, Haifeng / Zhang, Meirong / Lei, Jinzhi

    Journal of mathematical biology

    2022  Volume 86, Issue 1, Page(s) 2

    Abstract: Cancer is usually considered a genetic disease caused by alterations in genes that control cellular behaviors, especially growth and division. Cancer cells differ from normal tissue cells in many ways that allow them to grow out of control and become ... ...

    Abstract Cancer is usually considered a genetic disease caused by alterations in genes that control cellular behaviors, especially growth and division. Cancer cells differ from normal tissue cells in many ways that allow them to grow out of control and become invasive. However, experiments have shown that aberrant growth in many tissues burdened with varying numbers of mutant cells can be corrected, and wild-type cells are required for the active elimination of mutant cells. These findings reveal the dynamic cellular behaviors that lead to a tissue homeostatic state when faced with mutational and nonmutational insults. The current study was motivated by these observations and established a mathematical model of how a tissue copes with the aberrant behavior of mutant cells. The proposed model depicts the interaction between wild-type and mutant cells through a system of two delay differential equations, which include the random mutation of normal cells and the active extrusion of mutant cells. Based on the proposed model, we performed qualitative analysis to identify the conditions of either normal tissue homeostasis or uncontrolled growth with varying numbers of abnormal mutant cells. Bifurcation analysis suggests the conditions of bistability with either a small or large number of mutant cells, the coexistence of bistable steady states can be clinically beneficial by driving the state of mutant cell predominance to the attraction basin of the state with a low number of mutant cells. This result is further confirmed by the treatment strategy obtained from optimal control theory.
    MeSH term(s) Cell Cycle ; Models, Theoretical ; Homeostasis ; Cell Proliferation ; Mutation
    Language English
    Publishing date 2022-11-27
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 187101-8
    ISSN 1432-1416 ; 0303-6812
    ISSN (online) 1432-1416
    ISSN 0303-6812
    DOI 10.1007/s00285-022-01837-w
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    In stock of ZB MED Cologne/Königswinter

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  6. Article: Association Between Neddylation and Immune Response.

    Zhu, Jiali / Chu, Feng / Zhang, Meirong / Sun, Wenhuan / Zhou, Fangfang

    Frontiers in cell and developmental biology

    2022  Volume 10, Page(s) 890121

    Abstract: Neddylation is a ubiquitin-like post-translational protein modification. It ... ...

    Abstract Neddylation is a ubiquitin-like post-translational protein modification. It occurs
    Language English
    Publishing date 2022-05-05
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2737824-X
    ISSN 2296-634X
    ISSN 2296-634X
    DOI 10.3389/fcell.2022.890121
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  7. Article: Hemolymph Ecdysteroid Titer Affects Maternal mRNAs during

    Zhang, Meirong / Xu, Pingzhen / Chen, Tao

    Insects

    2021  Volume 12, Issue 11

    Abstract: Silkworm larval-pupal metamorphosis and the first half of pupal-adult development occur during oogenesis from previtellogenesis to vitellogenesis and include two peaks of the hemolymph ecdysteroid titer. Moreover, a rise in 20-hydroxyecdysone titer in ... ...

    Abstract Silkworm larval-pupal metamorphosis and the first half of pupal-adult development occur during oogenesis from previtellogenesis to vitellogenesis and include two peaks of the hemolymph ecdysteroid titer. Moreover, a rise in 20-hydroxyecdysone titer in early pupae can trigger the first major transition from previtellogenesis to vitellogenesis in silkworm oogenesis. In this study, we first investigated the expression patterns of 66 maternal genes in the ovary at the wandering stage. We then examined the developmental expression profiles in six time-series samples of ovaries or ovarioles by reverse transcription-quantitative PCR. We found that the transcripts of 22 maternal genes were regulated by 20-hydroxyecdysone in the isolated abdomens of the pupae following a single injection of 20-hydroxyecdysone. This study is the first to determine the relationship between 20-hydroxyecdysone and maternal genes during silkworm oogenesis. These findings provide a basis for further research into the embryonic development of
    Language English
    Publishing date 2021-10-27
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects12110969
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  8. Article ; Online: Depressing relaxation and conduction loss of polar polymer materials by inserting bulky charge traps for superior energy storage performance in high-pulse energy storage capacitor applications.

    Zhang, Meirong / Zhu, Bofeng / Zhang, Xiao / Liu, Zhenxue / Wei, Xiaoyong / Zhang, Zhicheng

    Materials horizons

    2023  Volume 10, Issue 7, Page(s) 2455–2463

    Abstract: Polymer-based dielectrics are chiefly used in high-pulse energy storage capacitors for their high breakdown strength, prominent processability, and low cost. Nevertheless, state-of-the-art commercial polymer-based dielectrics such as biaxially oriented ... ...

    Abstract Polymer-based dielectrics are chiefly used in high-pulse energy storage capacitors for their high breakdown strength, prominent processability, and low cost. Nevertheless, state-of-the-art commercial polymer-based dielectrics such as biaxially oriented polypropylene (BOPP), cannot satisfy the high energy density requirement in many fields because of their low permittivity. Limited success has been achieved in developing polar polymeric dielectrics with high energy density because of the quickly increased energy loss from polarization relaxation and charge conduction under a high electric field and temperature. To achieve high energy density and low loss in polar polymer dielectrics simultaneously, electron-deficient vinyl quinoline (VQQ) units are pre-copolymerized with methyl methacrylate (MMA) followed by blending with a PMMA matrix. The bulky and electron-deficient VQQs have successfully depressed the relaxation of PMMA and significantly decreased charge conduction under an elevated electric field. As a result, a rather high energy discharging efficiency (over 90%) could be finely maintained up to 800 MV m
    Language English
    Publishing date 2023-07-03
    Publishing country England
    Document type Journal Article
    ZDB-ID 2744250-0
    ISSN 2051-6355 ; 2051-6347
    ISSN (online) 2051-6355
    ISSN 2051-6347
    DOI 10.1039/d3mh00262d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Hemolymph Ecdysteroid Titer Affects Maternal mRNAs during Bombyx mori Oogenesis

    Zhang, Meirong / Xu, Pingzhen / Chen, Tao

    Insects. 2021 Oct. 27, v. 12, no. 11

    2021  

    Abstract: Silkworm larval–pupal metamorphosis and the first half of pupal–adult development occur during oogenesis from previtellogenesis to vitellogenesis and include two peaks of the hemolymph ecdysteroid titer. Moreover, a rise in 20-hydroxyecdysone titer in ... ...

    Abstract Silkworm larval–pupal metamorphosis and the first half of pupal–adult development occur during oogenesis from previtellogenesis to vitellogenesis and include two peaks of the hemolymph ecdysteroid titer. Moreover, a rise in 20-hydroxyecdysone titer in early pupae can trigger the first major transition from previtellogenesis to vitellogenesis in silkworm oogenesis. In this study, we first investigated the expression patterns of 66 maternal genes in the ovary at the wandering stage. We then examined the developmental expression profiles in six time-series samples of ovaries or ovarioles by reverse transcription–quantitative PCR. We found that the transcripts of 22 maternal genes were regulated by 20-hydroxyecdysone in the isolated abdomens of the pupae following a single injection of 20-hydroxyecdysone. This study is the first to determine the relationship between 20-hydroxyecdysone and maternal genes during silkworm oogenesis. These findings provide a basis for further research into the embryonic development of Bombyx mori.
    Keywords Bombyx mori ; ecdysterone ; embryogenesis ; hemolymph ; metamorphosis ; ovarioles ; silkworms ; time series analysis ; vitellogenesis
    Language English
    Dates of publication 2021-1027
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2662247-6
    ISSN 2075-4450
    ISSN 2075-4450
    DOI 10.3390/insects12110969
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: Research on Spatial Correlations and Influencing Factors of Logistics Industry Development Level

    Tian, Xinbao / Zhang, Meirong

    Sustainability. 2019 Mar. 05, v. 11, no. 5

    2019  

    Abstract: The logistics industry plays a greater role in the sustainable development of regional economies. The development of the logistics industry between regions is not independent, and there is a spatial correlation due to the existence of spatial spillover ... ...

    Abstract The logistics industry plays a greater role in the sustainable development of regional economies. The development of the logistics industry between regions is not independent, and there is a spatial correlation due to the existence of spatial spillover effect or spatial expansion among regions. This paper uses the method of entropy weight to evaluate the development level of the logistics industry in 31 provinces in China. On this basis, Moran’s index (Moran’s I), Moran’s I scatter plot, and local indicators of spatial association (LISA) agglomeration plot are used to analyze the overall and local spatial agglomeration characteristics of the logistics industry. Four main factors affecting the spatial relationship of the logistics industry are analyzed by choosing the fixed effect of the spatial error model. We find that: (i) There is spatial agglomeration effect in the development level of the logistics industry from the overall perspective; (ii) regional differentiation of the spatial agglomeration effect of logistics industry development level is obvious from the local perspective; and (iii) the influence of human resource factors on the spatial relationship of logistics development level is declining.
    Keywords entropy ; humans ; industry ; models ; sustainable development ; China
    Language English
    Dates of publication 2019-0305
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2518383-7
    ISSN 2071-1050
    ISSN 2071-1050
    DOI 10.3390/su11051356
    Database NAL-Catalogue (AGRICOLA)

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