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As a medium for delivering modernity, movie theaters have faithfully recorded the dialogue between modernity and local daily lives. In contrast to modern movie theaters, traditional cinemas are distinguished by their long history, through which they reflect the changing connotations and social construction of modernity over time. Based on detailed analysis of the historical and social characteristics of Nanguan cinema, a 100-year-old movie theater in Guangzhou, China, we reach the following two conclusions: first, shaped by local traditional culture, the practice of moviegoing localizes modernity with a distinctive grassroots feature that enlivens everyday lives; second, moviegoing at traditional theaters in modern metropolitan areas has further enriched the connotations of modernity by providing a nostalgic experience for audiences. [ABSTRACT FROM AUTHOR]

The development of information technology and the popularization of the internet economy have triggered the transformation of rural livelihoods and social networks, impacting villagers' emotional connections to their places. Taking Beiqishui village, a typical specialized village that produces kiwi fruit, as a case, this study examines how the villagers' economic roles, economic links, and economic rhythms have changed and how these changes are associated with the changes in the emotional connection between humans and places in the context of the internet economy. First, as a new means of livelihood for rural residents, WeChat business has encouraged them to become active economic actors, facilitating the development of their self-worth, family attachment, and place identity. Second, the collective mutual assistance and trust that are established through online economic links have a positive effect on the development of rural communities and the formation of collective identity and a sense of pride. Third, the economic rhythms influenced by WeChat business have made the construction of place identity dynamic. Our study suggests that the construction of place identity cannot be fully understood without considering economic factors, which are fundamental and even decisive in the place identity formation process. As a result of WeChat business, Beiqishui village has transformed into a lively, attractive, and booming area that benefits from digital technologies. • As a new mode of livelihood, WeChat business has reshaped the relationship between humans and place in rural China. • New economic roles, economic links, and economic rhythms led by WeChat business has promoted place identity reconstruction. • Economic factors have significant effects on cultural meaning and identity. • WeChat business has transformed the village into a lively and attractive community. [ABSTRACT FROM AUTHOR]

Natural disasters play significant destructive roles in agricultural production. Agriculture has substantially altered the biogeochemical silica cycle via the harvest of the grain and straw of silica-rich crops. China is a developing agricultural country that experiences frequent natural disasters. Although the spatiotemporal changes in the occurrence of natural disasters are well known for individual disaster events, the study of the effects of multiple disasters on cereal crop productivity and the resultant silica harvest is still relatively new. To make the connection between natural disasters and the silica biogeochemical cycle, we compiled a dataset of natural disasters and crop production and silicon contents in cereal crops (rice, wheat, and maize) in China using province-level data from 1988 to 2016. Our results show that the area affected by natural disasters declined significantly after 2000, and changes in the area affected by natural disasters varied at the province level. From 1988 to 2016, the total silica losses from grain and straw harvests due to natural disasters were 7.14 and 53.10 million tons, respectively. Half of the silica loss in more than half of the provinces was caused by drought. Our study suggests that drought prevention will increase the size of the silica sink and thereby increase the size of the carbon sink in China's agriculture. • Cultivation area affected by natural disasters declined significantly after 2000 in China. • Changes in affected areas of natural disasters varied at provincial level in China from 1988 to 2016. • Annual silica loss due to natural disasters from grain and straw harvest was 0.24 and 1.83 million tons, respectively. [ABSTRACT FROM AUTHOR]

Abnormal temperature has important effects on the occurrence of ischemic stroke (IS). However, relatively less efforts have been taken to systematically unravel the association between various abnormal temperature and IS hospital admission. Focusing on three temperature indicators (i.e., mean temperature, maximum temperature, and minimum temperature), this study attempts to analyse how their abnormal values affect IS hospital admission. The dataset covers the period between September 17, 2012 and August 28, 2018, and includes a total of 1464 cases who were admitted to the hospital for the first onset of IS and lived in the main urban area of Guangzhou. The study adopts the time-stratified case-crossover analysis. Abnormal values of temperature were measured using the 2.5th and 97.5th quantile values of each temperature indicator, with the former refers to a low value whereas the latter a high one. The effects of abnormal temperature on IS hospital admission were assessed through calculating the relative risks induced by the low and high values (the median values of each temperature indicators were taken as the references). The results show that the risk window periods for IS hospital admission associated with the low values of the temperature indicators are the lags of 3-7 days and 18-19 days. The risks of high temperature values on IS admission, however, are insignificant with either one-day lag or cumulative lag. As to different population groups, females show higher risks of IS hospital admission at low temperature values than males; and elderly people, compared with young people, are more vulnerable to low temperature values. To cities with similar climate of Guangzhou, particular attention should be paid to the impact of low temperature values, especially the low value of minimum temperature, on IS admission, and to females and elderly people who are more sensitive to abnormal temperatures., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)

Background: Extreme temperatures have an adverse effect on the occurrence of cardiovascular diseases (CVDs). Previous literatures tend to discuss the modification of CVDs occurrence by green space under high temperature. Relatively less attention is paid to the modification under low temperature. The variation of different attributes and spatial scales of green space in affecting CVDs occurrence are also overlooked., Methods: This study collected a total of 4364 first-time admission cases due to CVDs in a tertiary hospital in Guangzhou from 2012 to 2018, measured the scale of green space by greening rate (GR) and percentage of landscape (PLAND), the distribution of green space by patch density (PD), mean nearest neighbor distance (ENN_MN) and largest patch index (LPI), and the accessibility of green space by green patch accessibility index (GPAI). Using the time stratified case crossover design method, the modification of low temperature-related CVDs occurrence by the above green space indicators is evaluated in an area with a radius of 100-1000 m which is further divided at an interval of 100 m., Results: We found high GR, high PLAND, high PD, low ENN_MN, high LPI, and low GPAI corresponds to low risk of CVDs occurrence, the optimal modification scale of each green space indicator, which is radius corresponding to the maximum risk difference between high and low indicator subgroups, is around 800 m (GR), 600 m (PLAND and PD), 500 m (GPAI), and 300 m (LPI and ENN_MN), respectively. As the temperature decreases further, the health benefit from low GPAI at the optimal scale is weakened, whereas the benefits from the others are strengthened., Conclusions: Low temperature related CVDs occurrence risk can be modified by multiple green space indicators, and these modifications have spatial scale effect. Our findings have important theoretical and practical significance for the formulation and implementation of local green space policies., Competing Interests: Declaration of competing interest The authors declare that they have no competing interests., (Copyright © 2023 Elsevier GmbH. All rights reserved.)

Background: Epidemiological studies have widely proven the impact of ozone (O 3 ) on respiratory mortality, while only a few studies compared the association between different O 3 indicators and health., Methods: This study explores the relationship between daily respiratory hospitalization and multiple ozone indicators in Guangzhou, China, from 2014 to 2018. It uses a time-stratified case-crossover design. Sensitivities of different age and gender groups were analyzed for the whole year, the warm and the cold periods. We compared the results from the single-day lag model and the moving average lag model., Results: The results showed that the maximum daily 8 h average ozone concentration (MDA8 O 3 ) had a significant effect on the daily respiratory hospitalization. This effect was stronger than for the maximum daily 1 h average ozone concentration (MDA1 O 3 ). The results further showed that O 3 was positively associated with daily respiratory hospitalization in the warm season, while there was a significantly negative association in the cold season. Specifically, in the warm season, O 3 has the most significant effect at lag 4 day, with the odds ratio (OR) equal to 1.0096 [95% confidence intervals (CI): 1.0032, 1.0161]. Moreover, at the lag 5 day, the effect of O 3 on the 15-60 age group was less than that on people older than 60 years, with the OR value of 1.0135 (95% CI: 1.0041, 1.0231) for the 60+ age group; women were more sensitive than men to O 3 exposure, with an OR value equal to 1.0094 (95% CI: 0.9992, 1.0196) for the female group., Conclusion: These results show that different O 3 indicators measure different impacts on respiratory hospitalization admission. Their comparative analysis provided a more comprehensive insight into exploring associations between O 3 exposure and respiratory health., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Lin, Wang, Zhang, Stein, Maji, Cheng, Osei and Yang.)

Based on the investigation data of 133 samples from 30 grid stations in the Fujian-Guangdong coastal upwelling region (21.6 degrees - 24.3 degrees N,115.7 degrees -118.7 degrees E) in 11-16 June 2009, this paper studied the phytoplankton species composition and cell abundance in the region in three dimensions (vertical, horizontal, and sectional), and approached their relations with major environmental factors. A total of 159 taxa belonging to 85 genera of 4 phyla were identified, among which, diatom was predominant, followed by dinoflagellate. Cyanophyceae mainly composed of Trichodesmium also occupied a greater proportion, but Chrysophyceae was only checked out in the upper 10 m water layer at coastal stations. The dominant species were Rhizosolenia alata f. gracillma, Thalassionema nitzschioides, Pseudonitzschia pungens, Skeletonema costatum, Thalassionema frauenfeldii, Paralia sulcata, Guinadia striata, Trichodesmium thiebautii, Ceratium fusus, and Gyrodinium spirale. Most of the phytoplankton taxa were cosmopolitan species, followed by warm-water species, while tropic high-salinity or oceanic eurythermal species were lesser. The cell abundance of the phytoplankton was average of 67.59 x10(2) ind x L(-1). In vertical profile, the cell abundance of the phytoplankton was the highest in surface water, and decreased with water depth. In horizontal and sectional profiles, the cell abundance had no definite patterns, but the high abundance region was in Nanao Island water area, being anastomosed with the center of upwelling region, which indicated that the weak and small intensity of deep-sea water upwelling caused lesser phytoplankton cell abundance and superposition. The comparatively high phytoplankton cell abundance in the four sections (B, C, D, E) along Nanao-Zhangpu was resulted from the upwelling from Taiwan Bank. The phytoplankton cell abundance had a significant positive correlation with the PO4(3-) concentration in the upper 10 m water layer, but no correlation with the dissolved inorganic nitrogen (DIN) concentration. Thereby, to study the eco-physiological responses of phytoplankton species to nutrient stress would be helpful to reveal the formation mechanism of algal bloom in upwelling region.

A study on the chemical constituents of the endophytic fungus Preussia sp. led to the isolation of three new spirobisnaphthalene analogues, spiropreussione A (1), spiropreussione B (2), and spiropreussomerin A (3). Compound 2 is a spirobisnaphthalene analogue with a cyclopenteno-naphthoindene fragment bridged to a 1,8-dioxygenated naphthalene fragment, and compound 1 is the second compound in this series with a spiro-nonadiene skeleton. The structures of 1-3 were elucidated using spectroscopic data interpretation. Compound 1 showed cytotoxicity toward A2780 and BEL-7404 cells with IC(50) values of 2.4 and 3.0 microM, respectively, and weak activity against Staphylococcus aureus (CMCC B26003) with a MIC value of 25 microM.

A new labdane type diterpenoid, (8alpha,13R)-epoxy-14-labden-6beta,7beta-diol-7-beta-D-(4'-acetyl) fucopyranoside, named ledebourene 1, was isolated from the flowers of Trollius ledebouri. The absolute stereostructure was elucidated on the basis of the spectroscopic analysis.