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Article ; Online: Robust Control for the Suspension Cable System of the Unmanned Helicopter with Sensor Fault under Complex Environment

Rong Mei

Complexity, Vol

2021 Volume 2021

Abstract: Aiming at the suspension cable system of an unmanned helicopter with sensor fault under complex environment, this paper studies the robust antiswing tolerant control scheme. To suppress the swing of the hanging load when the unmanned helicopter is in the ...

Abstract	Aiming at the suspension cable system of an unmanned helicopter with sensor fault under complex environment, this paper studies the robust antiswing tolerant control scheme. To suppress the swing of the hanging load when the unmanned helicopter is in the forward flight state, a nonlinear line motion model is firstly established. Considering the sensor fault of the unmanned helicopter, a sensor fault estimator is developed. By using the fault estimator output, the robust antiswing tolerant controller is proposed using the backstepping technique and sliding mode control method. Under the designed robust antiswing tolerant controller, the desired tracking control performance can be obtained and the swing angle of the load is guaranteed small under the sensor fault. Furthermore, the closed-loop system stability is analyzed by using the Lyapunov technique. Simulation studies are given to show the efficiency of the designed robust antiswing control strategy.
Keywords	Electronic computers. Computer science ; QA75.5-76.95
Subject code	629
Language	English
Publishing date	2021-01-01T00:00:00Z
Publisher	Hindawi-Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Uncovering the relational upgrading of the iron product network in China

Chen, Hui / Du, Peilin / Ni, Yu / Rong, Mei

Resources, Conservation & Recycling. 2023 Oct., v. 197 p.107116-

2023

Abstract: Iron is a crucial resource for societal and economic progress. How can the China's iron industry, having grown in size and gained an export advantage, seek partners in the industry chain to develop better growth potential? We propose "relational ... ...

Abstract	Iron is a crucial resource for societal and economic progress. How can the China's iron industry, having grown in size and gained an export advantage, seek partners in the industry chain to develop better growth potential? We propose "relational upgrading" across multi-hierarchy. Using a Three-Stage Least Squares approach, we analyze the impact of three key network centralities of iron products on industrial upgrading, based on 1995–2020 HS-4 coded product export data. Results show: China's iron product network is multi-hierarchy. Relational upgrading transcends export advantage enhancement and reflects jumps to higher at multi-hierarchy. Policymakers can evaluate industry competitiveness by monitoring the iron product network's hierarchy of upgrades. Degree and betweenness centrality have a significant "inverted-U" effect on the iron industry's upgrading, while closeness has a hindering effect. Upgrading relationships across multi-hierarchy consolidates the network centrality status of iron products. Some policies for sustainable development as indicated by the results are given.
Keywords	exports ; industry ; sustainable development ; China ; Iron ; Iron product network ; Relational upgrading ; Revealed comparative advantage
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	1498716-8
ISSN	0921-3449
ISSN	0921-3449
DOI	10.1016/j.resconrec.2023.107116
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: An Impact Asymmetry Analysis of Small Urban Green Space Attributes to Enhance Visitor Satisfaction

Pengwei Wang / Lirong Han / Rong Mei

International Journal of Environmental Research and Public Health, Vol 19, Iss 2922, p

2022 Volume 2922

Abstract: Urban green spaces have beneficial effects on the health and well-being of citizens. Understanding the factors influencing visitor satisfaction with urban green spaces contributes to making more informed policies. Prior studies on green spaces ... ...

Abstract	Urban green spaces have beneficial effects on the health and well-being of citizens. Understanding the factors influencing visitor satisfaction with urban green spaces contributes to making more informed policies. Prior studies on green spaces satisfaction primarily focused on the linear correlation between small urban green space attributes and satisfaction. In this manuscript, we presented a study aimed to (1) identify the attributes of SUGS as frustrators, dissatisfiers, hybrids, satisfiers, and delighters; (2) prioritize attributes for effective satisfaction management; (3) assist managers in drafting guidelines for operational management decisions. We gathered a range of information about the users to nine SUGS in Shanghai, in 2020, via a questionnaire, and we found that safety, noise, and social interaction are improvement priorities. Squares and visitors’ behavior should not be ignored in SUGS management. Moreover, managers should carefully monitor SUGS attributes of the social environment to meet users’ expectations. The findings of this study have implications for SUGS management and future research.
Keywords	impact asymmetry analysis ; nonlinear effect ; park features ; small urban green spaces ; Medicine ; R
Subject code	710
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Effect assessment of methotrexate in combination with other chemotherapeutic agents for osteosarcoma in children: A protocol for systematic review and meta-analysis.

Yan, Jun-Ping / Xiang, Rong-Mei

Medicine

2021 Volume 100, Issue 20, Page(s) e25534

Abstract: Background: Osteosarcoma is a primary form of malignant bone tumor. It is commonly prevalent among children. Treating osteosarcoma with chemotherapy has had limited clinical outcomes due to side effects and the formation of drug resistance. Presently, a ...

Abstract	Background: Osteosarcoma is a primary form of malignant bone tumor. It is commonly prevalent among children. Treating osteosarcoma with chemotherapy has had limited clinical outcomes due to side effects and the formation of drug resistance. Presently, a mixture of doxorubicin, cisplatin, ifosfamide, epirubicin methrotrexate, and other supplementary medications are used in osteosarcoma chemotherapy. Therefore, this study aims to investigate the clinical therapeutic effects of combining methotrexate with other chemotherapeutic agents to treat osteosarcoma in children. Methods: The search of several electronic databases will lead to source related published studies. The electronic databases include both English (PubMed, EMBASE, Web of Science, and the Cochrane Library) and Chinese (China National Knowledge Infrastructure, WanFang, and China Biomedical Database) databases. All studies published from inception to November 19, 2020 are searched. Study selection, extraction of data, and evaluation of the bias risk in included studies are carried out by two authors independently. The software, RevMan 5.3, is used to analyze the data. Results: This study provides evidence of substantial quality for the clinical therapeutic effects of methotrexate combined with other chemotherapeutic agents for treating osteosarcoma in children. Conclusion: The results of this study provide conclusive evidence with regards to the clinical application of methotrexate combined with other chemotherapeutic agents for treating osteosarcoma in children. Ethics and dissemination: Since this study will use published data, ethical approval is not required. Systematic review registration number: This protocol has been registered on INPLASY202110024.
MeSH term(s)	Adolescent ; Antineoplastic Combined Chemotherapy Protocols/therapeutic use ; Bone Neoplasms/mortality ; Bone Neoplasms/therapy ; Chemotherapy, Adjuvant/methods ; Child ; Disease-Free Survival ; Humans ; Meta-Analysis as Topic ; Methotrexate/therapeutic use ; Neoplasm Recurrence, Local/epidemiology ; Neoplasm Recurrence, Local/prevention & control ; Osteosarcoma/mortality ; Osteosarcoma/therapy ; Randomized Controlled Trials as Topic ; Survival Rate ; Systematic Reviews as Topic ; Time Factors
Chemical Substances	Methotrexate (YL5FZ2Y5U1)
Language	English
Publishing date	2021-06-08
Publishing country	United States
Document type	Journal Article
ZDB-ID	80184-7
ISSN	1536-5964 ; 0025-7974
ISSN (online)	1536-5964
ISSN	0025-7974
DOI	10.1097/MD.0000000000025534
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Cytokine analysis of aqueous humor in patients with cytomegalovirus corneal endotheliitis.

Zhang, Xuan-Jun / Zhang, Jia-Xin / Qu, Yi / Peng, Rong-Mei / Zhang, Pei / Hong, Jing

Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie

2024

Abstract: Purpose: To evaluate cytokine levels of aqueous humor in patients with cytomegalovirus (CMV) corneal endotheliitis and their relationships with CMV DNA load.: Methods: 44 aqueous humor samples were obtained from 26 patients with CMV corneal ... ...

Abstract	Purpose: To evaluate cytokine levels of aqueous humor in patients with cytomegalovirus (CMV) corneal endotheliitis and their relationships with CMV DNA load. Methods: 44 aqueous humor samples were obtained from 26 patients with CMV corneal endotheliitis at various stages of treatment. 33 samples obtained from cataract patients during the same period were selected as a control group. Each sample was used to measure the concentration of the CMV DNA load using real-time quantitative polymerase chain reaction, and to examine the levels of IL-6, IL-8, IL-10, MCP-1, VCAM-1, VEGF, IP-10, G-CSF, ICAM-1 and IFN-γ using a cytometric bead array. Results: All 10 cytokines were found to have statistically significant differences between the CMV endotheliitis and cataract groups. The Spearman correlation test showed that the concentration of CMV DNA load was significantly associated with the levels of IL-6 (P = 0.005, r = 0.417), IL-8 (P < 0.001, r = 0.514), IL-10 (P < 0.001, r = 0.700), MCP-1 (P = 0.001, r = 0.487), VEGF (P < 0.001, r = 0.690), IP-10 (P = 0.001, r = 0.469), G-CSF (P < 0.001, r = 0.554) and ICAM-1 (P < 0.001, r = 0.635), but not significantly associated with VCAM-1 (P = 0.056) and IFN-γ (P = 0.219). Conclusions: There was a combined innate and adaptive immune response in aqueous humor in patients with CMV endotheliitis. Levels of multiple cytokines were significantly correlated with viral particle. Cytokines are potential indicators to help diagnose CMV endotheliitis, evaluate disease activity and assess treatment response.
Language	English
Publishing date	2024-03-06
Publishing country	Germany
Document type	Journal Article
ZDB-ID	8435-9
ISSN	1435-702X ; 0721-832X
ISSN (online)	1435-702X
ISSN	0721-832X
DOI	10.1007/s00417-024-06417-w
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Article ; Online: Screening and validation of reference genes in Dracaena cochinchinensis using quantitative real-time PCR.

Gao, Shixi / Peng, Junxiang / Rong, Mei / Liu, Yang / Xu, Yanhong / Wei, Jianhe

Scientific reports

2024 Volume 14, Issue 1, Page(s) 6165

Abstract: Dragon's blood, the red resin derived from the wounded Dracaena, is a precious traditional medicine used by different culture. Dracaena cochinchinensis is one of the main species of Dracaena, and is the endangered medicinal plants in China. The ... ...

Abstract	Dragon's blood, the red resin derived from the wounded Dracaena, is a precious traditional medicine used by different culture. Dracaena cochinchinensis is one of the main species of Dracaena, and is the endangered medicinal plants in China. The vulnerable status severely limits the medicinal value and wide application of dragon's blood. Therefore, it's essential to analyze the mechanisms that form dragon's blood in order to increase artificial production. To clarify the mechanisms forming dragon's blood, understanding gene expression in the flavonoid biosynthesis pathway is the foundation. However, reference genes of D. cochinchinensis haven't been analyzed. In this study, expression profiles of seven commonly used housekeeping genes (Actin, α-EF, UBC, β-tubulin, 18S, GAPDH, His) were evaluated by using quantitative real-time PCR combined with the algorithms geNorm, NormFinder, BestKeeper, and RefFinder. On the basis of overall stability ranking, the best reference genes were the combinations β-tubulin +UBC for wounded stems and α-EF +18S + Actin for different organs. Reliability of the recommended reference genes was validated by normalizing relative expression of two key enzyme genes PAL1 and CHI1 in the flavonoid biosynthesis pathway. The results provide a foundation to study gene expression in future research on D. cochinchinensis or other Dracaena.
MeSH term(s)	Real-Time Polymerase Chain Reaction ; Actins ; Reproducibility of Results ; Tubulin ; Plant Extracts ; Flavonoids ; Dracaena
Chemical Substances	Actins ; Tubulin ; Plant Extracts ; Flavonoids
Language	English
Publishing date	2024-03-14
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/s41598-024-52754-5
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Hemorrhoidal disease among doctors from grade-A tertiary hospitals in big cities of China: results from web-based doctors as patients survey.

Qiu, Xiaoyuan / Liu, Yuxin / Shi, Weikun / Lin, Guole / Rong, Mei / Wang, Bingjie

BMC gastroenterology

2024 Volume 24, Issue 1, Page(s) 103

Abstract: Background: Doctors are at high risk of developing hemorrhoidal disease (HD), but it is unclear whether doctors are aware of this risk. The OASIS (dOctors AS patIentS) study was performed to examine the prevalence, awareness, diagnosis, and treatment of ...

Abstract	Background: Doctors are at high risk of developing hemorrhoidal disease (HD), but it is unclear whether doctors are aware of this risk. The OASIS (dOctors AS patIentS) study was performed to examine the prevalence, awareness, diagnosis, and treatment of HD among doctors in big cities in China. Methods: An online survey consisting of a structured questionnaire was carried out among doctors in grade-A tertiary hospitals in 29 provinces across China from August to October 2020. Results: A total of 1227 questionnaire responses were collected. HD prevalence was 56.8%, with a significant difference between internists and surgeons (P = 0.01). 15.6% of doctors with HD didn't have serious concerns about the recurrence and severity of HD. 91.5% of doctors adopted general treatments, and 83.0% considered oral medications only when topical medications were ineffective. Among the oral medications, Micronized Purified Flavonoid Fraction (MPFF) was most effective based on the scores from three important parameters, but only 17% of doctors received MPFF. Conclusions: Doctors are at higher risk of developing HD with a high prevalence among Chinese doctors, but they are not fully aware or not concerned about HD. There is a deficiency in treatment recommendations and clinical management of HD even for doctors, including late initiation and inadequate oral drug therapy. Therefore, awareness and standardized treatment of HD should be improved among Chinese doctors, as well as in the general population.
MeSH term(s)	Humans ; Hemorrhoids/therapy ; Hemorrhoids/drug therapy ; Tertiary Care Centers ; Cities ; Surveys and Questionnaires ; Internet ; China/epidemiology
Language	English
Publishing date	2024-03-13
Publishing country	England
Document type	Journal Article
ZDB-ID	2041351-8
ISSN	1471-230X ; 1471-230X
ISSN (online)	1471-230X
ISSN	1471-230X
DOI	10.1186/s12876-024-03166-2
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Metal-organic framework-based ratiometric point-of-care testing for quantitative visual detection of nitrite.

Liang, Maosheng / Gao, Yifan / Sun, Xiaoling / Kong, Rong-Mei / Xia, Lian / Qu, Fengli

Journal of hazardous materials

2024 Volume 469, Page(s) 134021

Abstract: ... Nitrite ( ... ...

Abstract	Nitrite (NO
MeSH term(s)	Metal-Organic Frameworks ; Nitrites ; Fluorescence ; Nitrogen Dioxide ; Fluorescent Dyes ; Phthalic Acids
Chemical Substances	UiO-66 ; Metal-Organic Frameworks ; Nitrites ; Nitrogen Dioxide (S7G510RUBH) ; Fluorescent Dyes ; Phthalic Acids
Language	English
Publishing date	2024-03-12
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2024.134021
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Depression mediates the relationship between social capital and health-related quality of life among Chinese older adults in the context of the COVID-19 pandemic: A cross-sectional study.

Zhang, Ping / Liu, Xiao-Li / Zhang, Rong-Mei / Xia, Ning

Nursing open

2023 Volume 10, Issue 9, Page(s) 6517–6526

Abstract: Aim: To explore the association between social capital and health-related quality of life (HRQoL) and to determine whether depression mediates the association among Chinese older adults in the context of the COVID-19 pandemic.: Design: A descriptive ... ...

Abstract	Aim: To explore the association between social capital and health-related quality of life (HRQoL) and to determine whether depression mediates the association among Chinese older adults in the context of the COVID-19 pandemic. Design: A descriptive cross-sectional research design. Methods: The Geriatric Depression Scale-15, Social Capital Questionnaire and 12-item Short-Form Health Survey were used to investigate 1201 older adults selected from Jinan, Shandong Province, China, using a multistage stratified cluster random sampling method. Results: Pearson's correlation analysis revealed a significant positive correlation between social capital and HRQoL (r = 0.269, p < 0.01). Multivariate linear regression analyses demonstrated that social capital was significantly negatively associated with depression (β = -0.072, p < 0.001) and that depression was associated with HRQoL (β = -1.031, p < 0.001). The mediation analyses showed that depression mediated the association between social capital and HRQoL, and the indirect effect size was 0.073 (95% confidence interval: 0.050, 0.100).
Language	English
Publishing date	2023-07-03
Publishing country	United States
Document type	Journal Article
ZDB-ID	2809556-X
ISSN	2054-1058 ; 2054-1058
ISSN (online)	2054-1058
ISSN	2054-1058
DOI	10.1002/nop2.1904
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Article ; Online: Analysis of a Yp11.2 region deletion in a Chinese female with Turner syndrome

Li Lai / Xiao-li Huang / Duan-rong Mei / Yao Li / Yi-chen Wu

Heliyon, Vol 9, Iss 4, Pp e15162- (2023)

A case report

2023

Abstract: In recent years, an increasing number of abnormal DNA genotypes caused by chromosomal abnormalities have been revealed in cases of individual identification and sex-typing analysis, especially analyses of the amelogenin and short tandem repeat (STR) loci ...

Abstract	In recent years, an increasing number of abnormal DNA genotypes caused by chromosomal abnormalities have been revealed in cases of individual identification and sex-typing analysis, especially analyses of the amelogenin and short tandem repeat (STR) loci on the sex chromosomes. Here, we report a 17-year-old female with Turner syndrome typed as male due to the presence of the amelogenin Y allele. The Y-STR haplotype showed allele dropout of three Y-STR loci (DYS549, DYS392 and DYS448). Further examination showed that the proband's karyotype was 45,X/46,X,del(Y) (q11.23), and the deletion of the Yp11.2 region was confirmed to encompass the observed microdeletion of the azoospermia factor (AZF)b + c region. One challenge in forensics is inaccurate sex typing of individuals at the molecular level, particularly for individuals with chromosomal abnormalities. This case suggests that various medical evaluations, including the examination of sex-related manifestations, karyotypes, and clinical phenotypes of individuals, along with the detection of sex-typing gene markers will be beneficial to overcome the issues caused by cytogenetic disorders of the sex chromosomes.
Keywords	Yp11.2 deletion ; Y-STR ; Y chromosomal microdeletion ; Turner syndrome ; Case report ; Science (General) ; Q1-390 ; Social sciences (General) ; H1-99
Subject code	590
Language	English
Publishing date	2023-04-01T00:00:00Z
Publisher	Elsevier
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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