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Article ; Online: Correction: Effects of walking and sun exposure on bone density and balance in elderly with osteopenia.

Cheng, Jingwei / Meng, Shuqiao / Lee, Jaewoo / Kwak, Hanpyong / Liu, Yangqing

2023 Volume 41, Issue 4, Page(s) 579

Language	English
Publishing date	2023-06-15
Publishing country	Japan
Document type	Published Erratum
ZDB-ID	1295123-7
ISSN	1435-5604 ; 0914-8779
ISSN (online)	1435-5604
ISSN	0914-8779
DOI	10.1007/s00774-023-01445-8
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Pd Clusters on Schiff Base-Imidazole-Functionalized MOFs for Highly Efficient Catalytic Suzuki Coupling Reactions.

Liu, Yangqing / Sun, Jingwen / Fan, Lan / Xu, Qi

Frontiers in chemistry

2022 Volume 10, Page(s) 845274

Abstract: Subnanometer noble metal clusters have attracted much attention because of abundant low-coordinated metal atoms that perform excellent catalytic activity in various catalytic processes. However, the surface free energy of metals increases significantly ... ...

Abstract	Subnanometer noble metal clusters have attracted much attention because of abundant low-coordinated metal atoms that perform excellent catalytic activity in various catalytic processes. However, the surface free energy of metals increases significantly with decreasing size of the metal clusters, which accelerates the aggregation of small clusters. In this work, new Schiff base-imidazole-functionalized MOFs were successfully synthesized
Language	English
Publishing date	2022-03-01
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2711776-5
ISSN	2296-2646
ISSN	2296-2646
DOI	10.3389/fchem.2022.845274
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Article ; Online: Buckling suppression of a thin-walled Miura-origami patterned tube.

Liu, Yangqing / Cai, Jianguo / Feng, Jian

PloS one

2022 Volume 17, Issue 7, Page(s) e0270228

Abstract: In order to improve energy absorption capacity of tubes under axial compression, this work introduces an octagon tube patterned by curved Miura origami pattern and aims at suppressing global buckling of the tube via an appropriate fold line scheme. By ... ...

Abstract	In order to improve energy absorption capacity of tubes under axial compression, this work introduces an octagon tube patterned by curved Miura origami pattern and aims at suppressing global buckling of the tube via an appropriate fold line scheme. By categorizing the fold lines of the tube into two types (hinge-like lines and continuous lines) and allocating them to different positions, four arrangement schemes of the lines are developed. Through numerical comparison in force-displacement curve, stress distribution and lateral deformation capacity among four 3-level patterned tubes under different schemes, Scheme 4 (inclined valley lines as hinge-like lines and the others as continuous lines) is found to outperform the others in suppressing global buckling by reducing the magnitude of lateral deformation by up to 59.9% and by delaying the occurrence of global buckling by up to 35.9% compared with the other schemes. To step further, the scheme is applied in a long tube and geometrically different tubes are compared. The results prove that the scheme is potentially an effective way to alleviate buckling instability of a long tube when appropriately designed.
MeSH term(s)	Mechanical Phenomena ; Pressure
Language	English
Publishing date	2022-07-26
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0270228
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Article ; Online: Solution to the problem of bridge structure damage identification by a response surface method and an imperialist competitive algorithm.

Ye, Dan / Xu, Zhe / Liu, Yangqing

Scientific reports

2022 Volume 12, Issue 1, Page(s) 16495

Abstract: To increase the efficiency of structural damage identification (SDI) methods and timeously and accurately detect initial structural damage, this research develops an SDI method based on a response surface method (RSM) and an imperialist competitive ... ...

Abstract	To increase the efficiency of structural damage identification (SDI) methods and timeously and accurately detect initial structural damage, this research develops an SDI method based on a response surface method (RSM) and an imperialist competitive algorithm (ICA). At first, a Latin hypercube design method is used for experimental design and selection of sample points based on RSM. Then, a high-order response surface surrogate model for the target frequency response and stiffness reduction factor is established. Finally, analysis of variance is performed to assess the overall goodness-of-fit and prediction accuracy of the established model. Then the results obtained are combined with structural dynamic response data to construct objective functions; furthermore, the optimal solution of parameter vector in the objective function is solved based on the ICA. Then damage positioning and quantification can be achieved according to location and degree of change in each parameter; finally, the RSM-ICA-based SDI method proposed is applied to damage identification of high-dimensional damaged simply-supported beam models. To verify the effectiveness of the proposed method, the damage identification results are compared with the results obtained from traditional optimization algorithms. The results indicate that: average errors in the structural stiffness parameters and natural frequency that are identified by the proposed method are 6.104% and 0.134% respectively. The RSM-ICA-based SDI method can more accurately identify the location and degree of damages with more significantly increased identification efficiency and better precision compared to traditional algorithms. This approach provides a novel means of solving SDI problems.
MeSH term(s)	Algorithms ; Models, Theoretical ; Research Design
Language	English
Publishing date	2022-10-03
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-022-17457-9
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Article ; Online: Mechanism and Spatial Spillover Effect of New-Type Urbanization on Urban CO2 Emissions: Evidence from 250 Cities in China

Hu, Chiqun / Ma, Xiaoyu / Liu, Yangqing / Ge, Jiexiao / Zhang, Xiaohui / Li, Qiangyi

Land. 2023 May 11, v. 12, no. 5

2023

Abstract: Exploring the effect of new-type urbanization (NTU) on urban carbon abatement is of great practical significance for promoting urban green construction and coping with the challenge of global climate change. This study used data from 250 cities in China ... ...

Abstract	Exploring the effect of new-type urbanization (NTU) on urban carbon abatement is of great practical significance for promoting urban green construction and coping with the challenge of global climate change. This study used data from 250 cities in China from 2008 to 2020 and constructed the NTU evaluation indicator system from five dimensions. We used classical panel regression models to examine the effects of NTU on urban CO₂ emissions, and further used spatial econometric models of SEM, SAR, and SDM to identify the spatial spillover effects of NTU on urban CO₂ emissions. The main results are that China’s NTU and CO₂ emissions are generally rising, and NTU has a significantly negative effect on urban CO₂ emissions, with an impact coefficient of −0.9339; the conclusions still hold after subsequent robustness tests. Heterogeneity analysis reveals that NTU’s carbon abatement effect is more pronounced in resource-based cities, old industrial areas, and cities with lower urbanization levels and higher innovation levels. Mechanism analysis shows that improving urban technological innovation and optimizing resource allocation are important paths for realizing urban CO₂ emission reduction. NTU’s effect on urban CO₂ emissions has a noticeable spatial spillover. Our findings provide policy makers with solid support for driving high-quality urban development and dual-carbon targets.
Keywords	carbon ; carbon dioxide ; climate change ; econometrics ; issues and policy ; land ; resource allocation ; technology ; urbanization ; China
Language	English
Dates of publication	2023-0511
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land12051047
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: The impact of urban green space on the health of middle-aged and older adults.

Li, Qiangyi / Liu, Yangqing / Yang, Lan / Ge, Jiexiao / Chang, Xiaona / Zhang, Xiaohui

Frontiers in public health

2023 Volume 11, Page(s) 1244477

Abstract: Introduction: Urban green space is one of the most closely related ecosystem services to residents' lives, and it can be regarded as a preventive public health measure. Residents living in parks and other green environments can help improve their ... ...

Abstract	Introduction: Urban green space is one of the most closely related ecosystem services to residents' lives, and it can be regarded as a preventive public health measure. Residents living in parks and other green environments can help improve their physical and mental health, reduce stress and even prevent crime and violence. Therefore, based on the actual situation in China, this paper analyzes the relationship between urban green space and the health of middle-aged and older adults and its mechanisms. Methods: This study used multiple linear regression, based the data from the China Health and Retirement Longitudinal Study (CHARLS) in 2013, 2015, and 2018, to explore the relationship between urban green space and the health of middle-aged and older adults. At the same time, group regression was conducted to identify the heterogeneity of health effects of urban green space. Results: The research shows that the increase of urban green space areas can significantly improve the health status of middle-aged and older adults. After a series of robustness tests, the results are still valid. In addition, the health effects of urban green space are different because of gender, age, education level, marital status residence, geographical location of the respondents and park quantity distribution. Further research found that reducing hot weather and optimizing air quality are the potential mechanisms of urban green space affecting the health of middle-aged and older adults, providing new evidence for the causal mechanism between urban green space and the health of middle-aged and older adults. Discussion: This study expanded the research scope of the impact of urban green space on the health of middle-aged and older adults, covering a representative sample in China. The results show that urban green space has an important impact on the health of middle-aged and older adults. Policy suggestions are made to help cities optimize the landscape and residents to enjoy ecology.
MeSH term(s)	Ecosystem ; Parks, Recreational ; Longitudinal Studies ; Cities ; Health Status
Language	English
Publishing date	2023-10-10
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2711781-9
ISSN	2296-2565 ; 2296-2565
ISSN (online)	2296-2565
ISSN	2296-2565
DOI	10.3389/fpubh.2023.1244477
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Effects of myostatin gene knockout on white fat browning and related gene expression in type 2 diabetic mice.

Cheng, Jingwei / Lee, Jaewoo / Liu, Yangqing / Wang, Yanfang / Duan, Mingtao / Zeng, Zhen

Advances in clinical and experimental medicine : official organ Wroclaw Medical University

2023

Abstract: Background: Myostatin (Mstn) plays an important role in adipocyte growth, differentiation and metabolism, leading to the development of obesity.: Objectives: We aimed to explore the effect of Mstn on white fat browning in a mouse model of type 2 ... ...

Abstract	Background: Myostatin (Mstn) plays an important role in adipocyte growth, differentiation and metabolism, leading to the development of obesity. Objectives: We aimed to explore the effect of Mstn on white fat browning in a mouse model of type 2 diabetes mellitus (T2DM). Material and methods: Twelve wild-type (WT), 12 heterozygous (Mstn(+/-)) and 12 homozygous (Mstn(-/-)) male mice were randomly divided into 6 groups: WT, Mstn(+/-), Mstn(-/-), WT+DM, Mstn(+/-)+DM, and Mstn(-/-)+DM. The first 3 groups were fed normal chow, while the last 3 were fed high-fat diet and administered streptozotocin to generate T2DM. Subsequently, body mass, length, and white and brown fat masses were measured, after which Lee's index, white-brown ratio and fat index were calculated. The serum free fatty acid (FFA) levels were detected using enzyme-linked immunosorbent assay (ELISA). Hematoxylin and eosin (H&E) staining was used to analyze white and brown fat cell morphology. The relative expression levels of peroxisome proliferator-activated receptor-gamma (PPARγ), peroxisome proliferator-activated receptor-gamma coactivator-1 alpha (PGC-1α), uncoupling protein 1 (UCP1), and cluster of differentiation 137 (CD137) protein were determined with western blotting. Results: The Mstn(-/-) group displayed higher levels of PPARγ, PGC-1α and CD137 proteins in white and brown fat compared to the WT and Mstn(+/-) groups, while the expression level of UCP1 protein in the Mstn(-/-) group was higher than in the WT group. The expression levels of PPARγ, PGC-1α, UCP1, and CD137 proteins in the WT+DM group were lower than in the WT group. Moreover, PPARγ, PGC-1α, UCP1, and CD137 proteins were more highly expressed in the Mstn(-/-)+DM group compared to the WT+DM and Mstn(+/-)+DM groups. Conclusions: The Mstn gene inhibition antagonizes obesity phenotypes, such as white fat accumulation and lipid metabolism derangement caused by T2DM, thus promoting white fat browning.
Language	English
Publishing date	2023-10-13
Publishing country	Poland
Document type	Journal Article
ZDB-ID	2270257-X
ISSN	1899-5276 ; 1230-025X
ISSN	1899-5276 ; 1230-025X
DOI	10.17219/acem/171300
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Article: Distribution Characteristics, Regional Differences and Spatial Convergence of the Water-Energy-Land-Food Nexus: A Case Study of China

Li, Qiangyi / Yang, Lan / Jiang, Fangxin / Liu, Yangqing / Guo, Chenyang / Han, Shuya

Land. 2022 Sept. 12, v. 11, no. 9

2022

Abstract: Land use change affects the supply and demand of water, energy and food and the integration of land elements into the common water-energy-food (WEF) nexus, which is an effective way to strictly adhere to the bottom line of natural resources. First, this ... ...

Abstract	Land use change affects the supply and demand of water, energy and food and the integration of land elements into the common water-energy-food (WEF) nexus, which is an effective way to strictly adhere to the bottom line of natural resources. First, this study used the entropy method and coupling coordination model to measure the coupling coordination degree of the water-energy-land-food (WELF) nexus in 30 provinces in China during the period of 2006–2019. Then, the regional differences and distribution dynamics were examined with the Dagum Gini coefficient and Kernel density estimation, respectively. Finally, the spatial correlation was analyzed using the global Moran’s I, and a spatial β convergence model was constructed to empirically test its spatial β convergence characteristics. The results show that the coupling coordination degree of the WELF nexus in most of the provinces was at the stage of barely coordinated, with a decreasing trend; the intensity of transvariation was the main source of regional differences in the coupling coordination degree of the WELF nexus, followed by intra-regional differences, while inter-regional differences were small. The national, eastern and central regions had a slight gradient effect, showing regional dispersion characteristics, albeit less obvious; there was a spatial absolute-β convergence and spatial conditional-β convergence nationally and in the three regions. On this basis, policy recommendations were made to realize the synergistic development of land planning, water resources allocation, energy utilization, and food production and to balance regional differences in resources.
Keywords	case studies ; energy ; entropy ; food production ; issues and policy ; land ; land use change ; models ; statistical analysis ; supply balance ; China
Language	English
Dates of publication	2022-0912
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land11091543
Database	NAL-Catalogue (AGRICOLA)

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Article: Detection and phylogenetic analysis of tick-borne bacterial and protozoan pathogens in a forest province of eastern China

Hu, Haijun / Liu, Zhanbin / Fu, Renlong / Liu, Yangqing / Ma, Hongmei / Zheng, Weiqing

Elsevier B.V. Acta tropica. 2022 Nov., v. 235

2022

Abstract: Ticks, as obligate blood-sucking ectoparasites, feed on a broad range of vertebrates and transmit a great diversity of pathogenic microorganisms. Some tick-borne pathogens (TBPs) are endemic in China, whereas epidemiological studies are limited in ... ...

Abstract	Ticks, as obligate blood-sucking ectoparasites, feed on a broad range of vertebrates and transmit a great diversity of pathogenic microorganisms. Some tick-borne pathogens (TBPs) are endemic in China, whereas epidemiological studies are limited in Jiangxi, a forest province located in eastern China. Here, we have determined the positivity rates of TBPs in humans, rodents, dogs, goats and ticks, and performed the molecular characterization of TBPs in Jiangxi province. We found a high positivity rate of TBPs in the collected samples, demonstrating 23 (12.92%) samples positive for more than one TBPs. Of those, 11 (6.18%) samples were positive for Rickettsia spp., six (3.37%) Ehrlichia spp./Anaplasma spp., one (0.56%) Bartonella spp., two (1.12%) Borrelia spp., and five (2.81%) Babesia spp. The positivity rates of TBPs varied among ticks, animals, and humans as follow: goats (14/37, 37.84%), ticks (8/35, 22.86%), and dogs (1/11, 9.09%). Humans and rodents were negative for TBP presence. Phylogenetic analyses of these TBP sequences revealed the presence of Rickettsia japonica, Ehrlichia minasensis, and an unclassified Babesia spp. in goats, and Anaplasma phagocytophilum, Borrelia valaisiana, and an unclassified Bartonella spp. in ticks. Furthermore, R. japonica infection was exclusively found in goats with the positivity rate of 29.73%. Our study is the first report of R. japonica in goats around the world. These findings suggest high TBP positivity rates among goats, ticks, and dogs, and diverse TBPs in goats and ticks in the studied sites. Therefore, our results underscore the urgent need to assess TBP-tick-vertebrate-environment interactions and the risk of tick borne disease exposure in humans in the future.
Keywords	Anaplasma phagocytophilum ; Babesia ; Bartonella ; Borrelia valaisiana ; Ehrlichia ; Protozoa ; Rickettsia japonica ; forests ; phylogeny ; risk ; ticks ; China
Language	English
Dates of publication	2022-11
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	210415-5
ISSN	1873-6254 ; 0001-706X
ISSN (online)	1873-6254
ISSN	0001-706X
DOI	10.1016/j.actatropica.2022.106634
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effects of walking and sun exposure on bone density and balance in elderly with osteopenia.

Cheng, Jingwei / Meng, Shuqiao / Lee, Jaewoo / Kwak, Han-Byung / Liu, Yangqing

Journal of bone and mineral metabolism

2022 Volume 40, Issue 3, Page(s) 528–534

Abstract: Introduction: Bone mineral density (BMD) decreases with age, leading to fractures, decreased mobility, and impaired quality of life. We aimed to determine the effects of brisk walking and exposure to sunlight on BMD and balance in the elderly with ... ...

Abstract	Introduction: Bone mineral density (BMD) decreases with age, leading to fractures, decreased mobility, and impaired quality of life. We aimed to determine the effects of brisk walking and exposure to sunlight on BMD and balance in the elderly with osteopenia. Materials and methods: We recruited 81 elderly subjects with osteopenia from January 2019 to March 2019. They were divided into four groups: a daytime-walking group (n = 20), a night-time-walking group (n = 20), a sun-exposure-only group (n = 20), and a control group (n = 21). The subjects walked briskly for 30-60 min three times a week for 24 weeks. The sun-exposure-only group received sunlight for 20-30 min three times a week. All four groups received supplemental calcium. Lumbar L1-L4 BMD, serum 25-hydroxyvitamin D3, timed-up-go-test (TUGT), five-times-sit-stand-test (FTSST), open-eye and closed-eye one-leg-stance-test (OLST) were measured at baseline and 1 day after program completion. Results: The lumbar L1-L4 BMD was higher in all intervention groups (P < 0.05), with the daytime-walking group outperforming the others. There was no significant difference between the night-time-walking and sun-exposure-only groups (P > 0.05). The levels of serum 25-hydroxyvitamin D3 in the daytime-walking and sun-exposure-only groups were higher than those in the night-time-walking and control groups (P < 0.05). The TUGT and FTSST times decreased in all three intervention groups and predominantly so in the daytime-walking group, whereas the open-eye and closed-eye OLST times increased (P < 0.05). Conclusion: Brisk walking and sun exposure increase BMD and improve dynamic and static balance in the elderly with osteopenia.
MeSH term(s)	Aged ; Bone Density ; Bone Diseases, Metabolic ; Calcifediol ; Humans ; Quality of Life ; Sunlight ; Walking
Chemical Substances	Calcifediol (P6YZ13C99Q)
Language	English
Publishing date	2022-03-26
Publishing country	Japan
Document type	Journal Article
ZDB-ID	1295123-7
ISSN	1435-5604 ; 0914-8779
ISSN (online)	1435-5604
ISSN	0914-8779
DOI	10.1007/s00774-022-01317-7
Database	MEDical Literature Analysis and Retrieval System OnLINE

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