20 results
Search Results
2. Blessings on the Waves: Miraculous Encounters of Japanese Pilgrim Monks during Sea Voyages Transmitting Dharma from Southern Song China.
- Author
-
Liu, Yi
- Subjects
BUDDHIST monks ,VOYAGES & travels ,MONKS ,PILGRIMS & pilgrimages ,DHARMA ,JAPANESE literature ,GODS - Abstract
The maritime route connecting the Chinese continent and the Japanese archipelago facilitated a significant exchange of commercial goods and sociocultural knowledge throughout the Southern Song dynasty. Within this context, Japanese pilgrim monks traveling along this route acted as key conduits for the transmission of Buddhist teachings. Their journeys profoundly influenced the establishment and development of new Buddhist monasteries in Japan. Focusing on biographical accounts that portray the experiences of these pilgrim monks during their twelfth- and thirteenth-century sea voyages, this paper aims to explore how these accounts drew on intertextual links with existing Buddhist records to fulfill the compilers' intentions. Specifically, this paper examines the structure and sources of biographical accounts detailing miraculous encounters between pilgrim monks and Buddhist deities during perilous situations at sea. By interpreting the role of these deities in the corpus of Buddhist literature and within Japanese Buddhist monasteries founded by pilgrim monks, this paper argues that the increasing emphasis on pilgrim monks' attainment of divine protection in their biographical records suggests a growing concern for reinforcing the authority of their dharma lineages. Moreover, the composition and reception of these miraculous accounts reflected the changing religious needs and reshaped strategies for promoting specific Buddhist sects in subsequent periods. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Bibliometric analysis of global literature productivity in systemic lupus erythematosus from 2013 to 2022.
- Author
-
Xie, Xintong, Yu, Hao, He, Youxian, Li, Mengxiang, Yin, Feng, Zhang, Xue, Yang, Qiuyu, Wei, Guangliang, Chen, Huidong, He, Chengsong, He, Yue, and Chen, Jie
- Subjects
BIBLIOMETRICS ,CITATION analysis ,SYSTEMIC lupus erythematosus ,DATABASES ,MACHINE learning - Abstract
Background: Bibliometric analysis is a mature method for quantitative evaluation of academic productivity. In view of the rapid development of research in the field of systemic lupus erythematosus (SLE) in the past decade, we used bibliometric methods to comprehensively analyze the literature in the field of SLE from 2013 to 2022. Methods: The relevant literature in the field of SLE from 2013 to 2022 was screened in the Web of Science Core Collection database. After obtaining and sorting out the data, CiteSpace and VOSviewer software were used to visualize the relevant data, and SPSS software was used for scientific statistics. Results: A total of 18,450 publications were included in this study. The number of articles published over the past 10 years has generally shown an upward trend, while Altmetric attention scores have also shown a clear upward trend in general and in most countries. Citation analysis and Altmetric analysis can mutually prove and supplement the influence of papers. The USA, China, Japan, Italy, and the UK are the most productive countries, but China and Japan are significantly inferior to other countries in terms of research influence. Four of the top ten authors are at the center of the collaboration network. LUPUS is the most contributing journal. The theme of systemic lupus erythematosus research mainly focuses on the pathogenesis, treatment, and management of SLE, and the emerging trend is related research on machine learning and immune cells. Conclusion: This study shows the research status of SLE, clarifies the main contributors in this field, discusses and analyzes the research hotspots and trends in this field, and provides reference for further research in this field to promote the development of SLE research. Key Points • Through bibliometric analysis, Altmetric analysis, and visual analysis, we reveal the global productivity characteristics of SLE-related papers in the past 10 years. • The number of global SLE-related studies has shown a significant increase, indicating that SLE is still a hot topic and deserves further study. • Citation analysis and Altmetric analysis can mutually prove and supplement the influence of papers, and the attention of related literature among non-professional researchers is increasing. • The theme of SLE research mainly focuses on the pathogenesis, treatment, and management of SLE. The emerging trend is machine learning and immune cells, which may provide new strategies for the diagnosis and treatment of SLE in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Securitizing Beijing through the maritime commons: the 'China threat' and Japan's security discourse in the Abe era.
- Author
-
Dell'Era, Alice
- Subjects
IDENTITY (Psychology) ,DISCOURSE ,LABELING theory - Abstract
The 'China threat' has been identified as an important driver of Japan's security agenda and discourse. The threat posed by China has been discussed either as a given factor determining the trajectory of Tokyo's security approach, as a product of identity construction, or as an expression of securitizing processes that facilitate institutional and policy change. This paper contributes to this debate by offering an alternative explanation of the process through which the Abe government constructed China as a threat. Building on securitization theory, the paper examines the modes and strategies employed by the Abe Administration to successfully securitize China. The paper argues that, while Beijing was labeled a 'concern' rather than an 'existential threat,' it was still securitized through a process of securitization that involves an association with those domains in which China engages assertively, namely the maritime commons. The paper suggests calling this type of securitizing pattern 'transversal securitization' and explores how this indirect strategy allowed the Abe government to pragmatically pursue its objectives both domestically and at the international level. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Sustainable Development Goals in EFL Students' Learning: A Systematic Review
- Author
-
Ni Luh Putu Ning Septyarini Putri Astawa, Made Hery Santosa, Luh Putu Artini, and Putu Kerti Nitiasih
- Abstract
Involving the global issues as listed in Sustainable Development Goals (SDGs) in education is necessarily done in the education process, especially in English as a Foreign Language (EFL) learning. Exposure to global issues is known to improve students' understanding, awareness, and ability to solve urgent issues faced by global society. This paper aims to find out the trend of research on the coverage of SDGs in students' learning process. This systematic literature analysis was done by applying Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Method. A total of 25 studies were recognized through a systematic search by using Sustainability, SDGs, and EFL as keywords. The result shows that the trend of associating SDGs with EFL settings was done mostly in Indonesia. In the recent year 2022, it reached the highest number of studies in the particular matter with 7 total of research. It was also found that the study involving SDGs on EFL learning was mostly done in the tertiary setting, compared with K-12, junior high school, secondary, high school, and other educational institutions. It was also discovered that the specific area of study enhances EFL students' learning achievement, environmental awareness, global citizen values, as well as students' levels of self-norms, beliefs, and self-value.
- Published
- 2024
6. Risk assessment of broflanilide for human and non-target terrestrial organisms in cauliflower production.
- Author
-
Lin, Hongfang, Yang, Yuanping, Li, Na, Liu, Siyu, Yang, Lijing, Cheng, Yu, Sheng, Huishan, Li, Hui, Wen, Wanting, Guo, Yongze, and Zhang, Yuting
- Subjects
- *
NON-target organisms , *HEALTH risk assessment , *CAULIFLOWER , *ACUTE toxicity testing , *CHINESE people - Abstract
Broflanilide is a newly-developed meta-diamide insecticide, proposed for the control of a wide variety of chewing pests on many crops. In view of the proposed use of broflanilide and its environmental fate, it may be exposed to consumers and non-target organisms, which adversely affect human and the environment. In this paper, a rapid, sensitive and valid UPLC-MS/MS method was established for simultaneous analysis of broflanilide and its two major metabolites, DM-8007 and S (PFP-OH)-8007, in cauliflower. Then, the dissipation behaviors and final residues of broflanilide and its two major metabolites in cauliflower from eight sites with different climatic conditions in China were studied via the described analytical method. In addition, the acute toxicity test of 9.5 % suspension concentrate of broflanilide, broflanilide standard, DM-8007 and S (PFP-OH)-8007 were conducted to non-target terrestrial organisms. Risk assessment for human and non-target terrestrial organisms in cauliflower production was evaluated based on the maximum annual application rates and intervals. The results showed that the highest residue of broflanilide detected in cauliflower samples was all lower than the corresponding MRLs (2 mg/kg) in Japan. Chronic food dietary risk estimates for broflanilide do not exceed 50 % for all the Chinese population groups. Moreover, broflanilide is of low acute toxicity to birds and earthworm, while broflanilide and its metabolites is classified as highly toxic to adult honeybees. Acute risks of broflanilide to birds and earthworms were deemed to be acceptable in a realistic worst-case scenario, while its risk to adult honeybees and ladybug was unacceptable. A protection statement for honeybees and ladybug is required to recognize the high toxicity of broflanilide on related product labels. The study will be conducive to provide guidance for the rational application of broflanilide in cauliflower production. [Display omitted] • Chronic food dietary risk does not exceed 50 % for all the Chinese population. • Broflanilide is of low acute toxicity to birds and earthworm. • Broflanilide and its metabolites is highly toxic to adult honeybees. • Acute risk to adult honeybees and ladybug was unacceptable. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. A scoping review of utilization of the verbal fluency task in Chinese and Japanese clinical settings with near-infrared spectroscopy.
- Author
-
Yufei Ren, Gang Cui, Kun Feng, Xiaoqian Zhang, Chenchao Yu, and Pozi Liu
- Subjects
NEAR infrared spectroscopy ,LINGUISTIC context ,MENTAL illness ,HEMODYNAMICS ,SPECIFIC language impairment in children - Abstract
This review targets the application of the Verbal Fluency Task (VFT) in conjunction with functional near-infrared spectroscopy (fNIRS) for diagnosing psychiatric disorders, specifically in the contexts of China and Japan. These two countries are at the forefront of integrating fNIRS with VFT in clinical psychiatry, often employing this combination as a complementary tool alongside traditional psychiatric examinations. Our study aims to synthesize research findings on the hemodynamic responses elicited by VFT task in clinical settings of the two countries, analyzing variations in task design (phonological versus semantic), stimulus modality (auditory versus visual), and the impact of language typology. The focus on China and Japan is crucial, as it provides insights into the unique applications and adaptations of VFT in these linguistically and culturally distinct environments. By exploring these specific cases, our review underscores the importance of tailoring VFT to fit the linguistic and cultural context, thereby enhancing its validity and utility in cross-cultural psychiatric assessments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
8. Precarious Academic Citizens: Early Career Teachers' Experiences and Implications for the Academy
- Author
-
Jody Crutchley, Zaki Nahaboo, and Namrata Rao
- Abstract
The fragmentation of academic work and its uneven distribution among academic staff have produced particular challenges for new entrants to teaching in Higher Education, Early Career Teachers [ECTs]. In this paper, documentary analysis of the narratives of fourteen ECTs, who worked across six different continents, was undertaken. The findings highlight the diverse forms of precarity that ECTs face, which cut across migratory, identitarian, economic, and ideological dimensions. It discusses ECTs' reflections on their expectations of teaching and their adaptation to the demands of neoliberal Higher Education. Drawing from their narratives and Sevil Sümer's theories of differentiated academic citizenship, ECTs are recognised as 'precarious academic citizens'. This has important implications for revealing the unique circumstances of this group, thereby opening further questions as regards their mentoring and support to enable them to be situated more equally as citizens of the academy.
- Published
- 2024
- Full Text
- View/download PDF
9. A comparative study of grain quality and physicochemical properties of premium japonica rice from three typical production regions.
- Author
-
Zhi Dou, Qian Yang, Halun Guo, Yicheng Zhou, Qiang Xu, and Hui Gao
- Subjects
RICE starch ,AMYLOPECTIN ,RICE quality ,COMPARATIVE studies ,RICE ,AMYLOSE - Abstract
Grain quality indicates rice commodity value. This research compared grain quality and physicochemical properties of premium japonica rice from three production regions, Yangtze River downstream of China (YRDCN), Northeast region of China (NECN) and Japan. Results showed that there were distinct quality and physicochemical characteristics variance among the three groups of japonica rice, while CVs of most quality parameters from low to high was Japan, YRDCN and NECN. YRDCN rice presented obvious lower apparent amylose content (AAC) and ratio of each chain-length sections of amylopectin, and showed higher protein contents especially glutelin and ratio in short and intermediate amylopectin molecules. Among three rice groups, YRDCN rice presented weaker appearance, whereas did not show inferior cooking and eating properties, which was primarily linked to lower AAC. Rice AAC and starch fine structure significantly correlated with pasting parameters, swelling power and solubility, while protein content had close relation with taste analyzer parameters. Results of this study indicated improvement direction for japonica rice of YRDCN, and also provided reference for consumers' rice purchasing selection in accordance with individual taste preference. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
10. The emotional impact of uncomplicated urinary tract infections in women in China and Japan: a qualitative study.
- Author
-
Yun, Zhao, Powell, Danielle, Mulgirigama, Aruni, and Miyazaki, Jun
- Subjects
URINARY tract infections ,MEDICAL personnel ,COMMUNITY-acquired infections ,LONELINESS ,HOSPITAL pharmacies ,TELEPHONE interviewing - Abstract
Background: Uncomplicated urinary tract infections (uUTIs) are one of the most common community-acquired infections, particularly among women. Common symptoms of UTI include dysuria, urinary urgency and increased frequency, and lower abdominal pain. With appropriate treatment, symptoms may resolve in a few days. However, there is a lack of research on the emotional impact of this disease. We conducted a qualitative, interview-based study to gain a greater understanding of the emotional impact of uUTIs in women in China and Japan. Methods: A qualitative, exploratory, in-depth, interview-based study was conducted between 19 November 2020 and 25 February 2021. Women aged ≥ 18 years who experienced ≥ 1 uUTI and received antibiotic treatment in the past year were eligible for inclusion. Participants must have experienced ≥ 1 of the following symptoms during a uUTI episode: urinary urgency, frequency, dysuria, or lower abdominal/suprapubic pain. Participants who reported back pain or fever (indicative of complicated UTI) were excluded. Participants with recurrent or sporadic UTIs were included, with specific screening criteria used to ensure capture of both groups. Following a screening call, a structured, in-depth telephone interview (~ 30 min in duration) was conducted by three female external moderators trained in qualitative interviewing, assisted by an interview guide. Interviews were analysed individually and thematically, with the results presented within the identified themes. Results: A total of 65 women with uUTI completed the in-depth telephone interview: 40 (62%) from China and 25 (38%) from Japan. Participants reported that the symptoms of uUTI affected multiple aspects of their lives, and described feelings of embarrassment, frustration, guilt, dread, and loneliness associated with symptoms that interfered with relationships, work and daily activities, and sleep. Participants reported seeking healthcare from several different points of contact, from local pharmacies to hospitals. Conclusions: Our analysis highlights the profound emotional impact of uUTIs in women in China and Japan, and the journey these participants take before their initial interaction with a healthcare professional. These insights emphasise the need to better understand the full impact of uUTI, and the role of healthcare professionals in improved patient education and support. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
11. A Phylogenetic and Taxonomic Revision of Discula theae-sinensis , the Causal Agents of Anthracnose on Camellia sinensis.
- Author
-
Guo, Meijun, Zhao, Shiyi, Gao, Yue, Shen, Xiaoye, and Hou, Chenglin
- Subjects
TEA ,ANTHRACNOSE ,TEA plantations ,CULTIVARS ,AXIOMS - Abstract
Tea (Camellia sinensis (L.) Kuntze) is one of the most important economic plants in China, and has many benefits for human health. Anthracnose is one of the most serious diseases of tea in China, and control of the fungus is important since most Chinese cultivars are susceptible to it. The agent of tea anthracnose was initially described as Gloeosporium theae-sinensis I. Miyake in Japan, which was later transferred to Discula, but this taxonomic position remains problematic. To shed light on these taxonomic and phylogenetic issues, the tea anthracnose pathogens were re-studied. Combining the morphological characteristics and a multigene phylogenetic analysis of nrITS, nrLSU, rpb2, and tef1 sequence data, a new genus Sinodiscula was proposed to accommodate the causal fungi of tea anthracnose, including a new species Sinodiscula camellicola and a new combination Sinodiscula theae-sinensis. Furthermore, the pathogenicity of the pathogens was determined according to Koch's postulates. This study thoroughly resolves the long-standing taxonomic and phylogenetic problems of the tea anthracnose pathogens. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. Distribution of Suitable Habitats for Soft Corals (Alcyonacea) Based on Machine Learning.
- Author
-
Dong, Minxing, Yang, Jichao, Fu, Yushan, Fu, Tengfei, Zhao, Qing, Zhang, Xuelei, Xu, Qinzeng, and Zhang, Wenquan
- Subjects
ALCYONACEA ,DEEP-sea corals ,MACHINE learning ,DEEP-sea exploration ,WATER depth ,CORALS ,CORAL bleaching - Abstract
The soft coral order Alcyonacea is a common coral found in the deep sea and plays a crucial role in the deep-sea ecosystem. This study aims to predict the distribution of Alcyonacea in the western Pacific Ocean using four machine learning-based species distribution models. The performance of these models is also evaluated. The results indicate a high consistency among the prediction results of the different models. The soft coral order is primarily distributed in the Thousand Islands Basin, Japan Trench, and Thousand Islands Trench. Water depth and silicate content are identified as important environmental factors influencing the distribution of Alcyonacea. The RF, Maxent, and XGBoost models demonstrate high accuracies, with the RF model exhibiting the highest prediction accuracy. However, the Maxent model outperforms the other three models in data processing. Developing a high-resolution, high-accuracy, and high-precision habitat suitability model for soft corals can provide a scientific basis and reference for China's exploration and research in the deep sea field and aid in the planning of protected areas in the high seas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
13. A Methodology for the Prediction of Extreme Precipitation in Complex Terrains: A Case Study of Central Southwest China.
- Author
-
Lei, Shiyun, Yu, Shujie, Sun, Jilin, Wang, Zhixuan, and Liao, Yanzhen
- Subjects
OCEAN-atmosphere interaction ,OCEAN temperature ,PRECIPITATION forecasting ,FEATURE selection ,ROGUE waves ,TELECONNECTIONS (Climatology) - Abstract
Against the backdrop of global warming, extreme precipitation events have become more frequent. In complex terrain regions, due to the vulnerability of their ecosystems, extreme precipitation events can lead to significant secondary disasters. Utilizing daily rainfall data from the National Meteorological Information Center of China and statistical analysis, this study explores the spatial and temporal distribution of extreme precipitation in the Central Southwest China (CSC) region. The temporal pattern of extreme precipitation in CSC shows a consistent trend, while the spatial distribution reveals an opposite phase between the northern and southern parts of CSC. Based on this, we propose a new method for constructing extreme precipitation prediction models for complex terrain regions based on physical mechanisms, and take CSC area as a study case. Instead of anonymous feature selection, this method improves the accuracy and stability of the model by studying the impact of sea–air interactions on extreme precipitation and then introducing it into deep learning. It was found that the sea surface temperature (SST) anomaly in the South Indian Ocean affects extreme precipitation in the CSC by influencing uplift, atmospheric instability, and moisture. The SST anomaly also affects the intensity of cross-equatorial airflow, which changes the trajectory of the Pacific–Japan teleconnection wave and impacts extreme precipitation. These findings provide a comprehensive and reliable approach for forecasting extreme precipitation in CSC and are further integrated into the extreme precipitation prediction models. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
14. TM-MC 2.0: an enhanced chemical database of medicinal materials in Northeast Asian traditional medicine.
- Author
-
Kim, Sang-Kyun, Lee, Myung-Ku, Jang, Ho, Lee, Jeong-Ju, Lee, Sanghun, Jang, Yunji, Jang, Hyunchul, and Kim, Anna
- Subjects
DATABASES ,TRADITIONAL medicine ,DRUGS ,CHROMATOGRAPHIC analysis ,CHINESE medicine ,WORLD Wide Web - Abstract
Background: As chromatographic techniques have advanced, many articles that analyze the constituting compounds of medicinal materials have been published in relation to Northeast Asian traditional medicine, including traditional Chinese medicine (TCM). TM-MC was launched in 2015, providing information about the chemical compounds in medicinal materials from chromatographic articles in PubMed. Since 2015, through continuous curation efforts, we have now released TM-MC 2.0 with significant improvements to the quantity and quality of the data (https://tm-mc.kr). Description: TM-MC 2.0 contains 635 medicinal materials, 34,107 chemical compounds (21,306 identified and de-duplicated), 13,992 targets, 27,997 diseases, and 5,075 prescriptions (2,393 de-duplicated by name). The database provides the largest number of identified compounds for medicinal materials listed in the pharmacopoeia compared to all TCM databases. In particular, marker compounds of medicinal materials and many newly discovered compounds were added through the manual curation of recent chromatographic articles. Conclusion: TM-MC 2.0 provides the largest collection of information about the chemical compounds of the medicinal materials listed in the Korean, Chinese, and Japanese pharmacopoeias. Our database can be utilized for network pharmacology in traditional medicine and for the compound screening of medicinal materials for modern drug discovery. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Researcher from Sichuan University Publishes New Studies and Findings in the Area of Heart Failure (A bibliometric analysis and visualization of research on heart failure complicated with malnutrition).
- Subjects
BIBLIOMETRICS ,HEART failure ,CARDIAC research ,RESEARCH personnel ,DATA visualization - Abstract
A recent study conducted by a researcher from Sichuan University in China analyzed the research on heart failure complicated with malnutrition over the past 10 years. The study used bibliometric analysis and visualization techniques to identify trends and hotspots in the research. The analysis found that there has been an increase in the number of studies on this topic, with the most productive countries being the USA, Japan, and China. The study identified several research areas of interest, including the assessment of nutrition status, the impact of nutrition on patients, and the treatment of heart failure complicated with malnutrition. The findings of this study provide a comprehensive overview of the current research landscape and can serve as a valuable reference for future studies. [Extracted from the article]
- Published
- 2024
16. The effect of actual and expected income shocks on mental wellbeing: Evidence from three East Asian countries during COVID-19.
- Author
-
Zamanzadeh A, Cavoli T, Ghasemi M, and Rokni L
- Subjects
- Humans, Male, Female, Adult, Middle Aged, Republic of Korea epidemiology, Loneliness psychology, Pandemics economics, China epidemiology, Japan epidemiology, Aged, Young Adult, East Asian People, COVID-19 psychology, COVID-19 economics, COVID-19 epidemiology, Mental Health, Income statistics & numerical data, Anxiety epidemiology, SARS-CoV-2
- Abstract
This paper evaluates the effects of economic shocks to current and expected income reduction on mental wellbeing. We use individual-level data from three East Asian countries; China, Japan, and South Korea, during the early phases of the pandemic when the COVID-induced economic shocks were severe. The findings reveal significant causal effects from current and expected income reduction on different aspects of mental health deterioration, including anxiety, trouble sleeping, boredom, and loneliness. Interestingly, we found that expectations of future income loss have a significantly larger effect on people's mental wellbeing compared to current falls in income. This has significant implications for the design of policies to support income during pandemics., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
17. Size-classified aerosol-bound heavy metals and their effects on human health risks in industrial and remote areas in Japan.
- Author
-
Inomata Y, Sasaki N, Tanahashi S, Fujimoto T, Akasaka O, Fukushi K, Natori S, Takahashi Y, and Seto T
- Subjects
- Humans, Japan, Risk Assessment, Carcinogens analysis, Aerosols toxicity, Water, Environmental Monitoring, China, Metals, Heavy toxicity, Metals, Heavy analysis
- Abstract
Airborne aerosols were collected in six size classes (PM
<0.1 , PM0.1-0.5 , PM0.5-1 , PM1-2.5 , PM2.5-10 and PM>10 ) to investigate aerosol health risks in remote and industrial areas in Japan. We focused on heavy metals and their water-dispersed fractions. The average concentration of heavy metals was 18 ± 25-86 ± 48 ngm-3 for PM<0.1 , 46 ± 19-154 ± 80 for PM0.5-1 ngm-3 , 98 ± 49-422 ± 186 ngm-3 for PM1-2.5 , 321 ± 305-1288 ± 727 ngm-3 for PM2.5-10 and 65 ± 52-914 ± 339 ngm-3 or PM>10 , and these concentrations were higher in industrial areas. Heavy metals emitted from domestic anthropogenic sources were added to the long-range transport component of the aerosols. The water-dispersed fraction of heavy metals contained 3.3-40.1% of the total heavy metals in each size class. The relative contribution of Zn and other species (As, Cd, Cr, Ni, Pb, Mn, V and Cu) increased in the water-dispersed fraction. Smaller particles contained greater proportions of the water-dispersed heavy metal fraction. Carcinogenic risk (CR) and the hazard index (HI) were estimated for each size class. The CR of carcinogens was at acceptable levels (<1 ×10-6 ) for five particle size fractions. The HI values for carcinogens and noncarcinogens were also below acceptable levels (<1) for the same five size fractions. The estimated CR and HI values were dominated by contributions from the inhalation process., 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 © 2024 Elsevier B.V. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
18. Twelve-year conversion of rice paddy to wetland does not alter SOC content but decreases C decomposition and N mineralization in Japan.
- Author
-
Tang S, Liu T, Hu R, Xu X, Wu Y, Meng L, Hattori S, Tawaraya K, and Cheng W
- Subjects
- Agriculture methods, Wetlands, Japan, Carbon analysis, Nitrogen analysis, China, Soil, Oryza
- Abstract
Land-use change worldwide has been driven by anthropogenic activities, which profoundly regulates terrestrial C and N cycles. However, it remains unclear how the dynamics and decomposition of soil organic C (SOC) and N respond to long-term conversion of rice paddy to wetland. Here, soil samples from five soil depths (0-25 cm, 5 cm/depth) were collected from a continuous rice paddy and an adjacent wetland (a rice paddy abandoned for 12 years) on Shonai Plain in northeastern Japan. A four-week anaerobic incubation experiment was conducted to investigate soil C decomposition and N mineralization. Our results showed that SOC in the wetland and rice paddy decreased with soil depth, from 31.02 to 19.66 g kg
-1 and from 30.26 to 18.86 g kg-1 , respectively. There was no significant difference in SOC content between wetland and rice paddy at any depth. Soil total nitrogen (TN) content in the wetland (2.61-1.49 g kg-1 ) and rice paddy (2.91-1.78 g kg-1 ) showed decreasing trend with depth; TN was significantly greater in the rice paddy than in the wetland at all depths except 20-25 cm. Paddy soil had significantly lower C/N ratios but significantly larger decomposed C (Dec-C, CO2 and CH4 production) and mineralized N (Min-N, net NH4 + -N production) than wetland soil across all depths. Moreover, the Dec-C/Min-N ratio was significantly larger in wetland than in rice paddy across all depths. Rice paddy had higher exponential correlation between Dec-C and SOC, Min-N and TN than wetland. Although SOC did not change, TN decreased by 14.1% after the land-use conversion. The Dec-C and Min-N were decreased by 32.7% and 42.2%, respectively, after the12-year abandonment of rice paddy. Conclusively, long-term conversion of rice paddy to wetland did not distinctly alter SOC content but increased C/N ratio, and decreased C decomposition and N mineralization in 0-25 cm soil depth., 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 © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
19. Autumn and spring observations of PM 2.5 -bound polycyclic aromatic hydrocarbons and nitro-polycyclic aromatic hydrocarbons in China and Japan.
- Author
-
Zhang L, Yang L, Kashiwakura K, Zhao L, Chen L, Han C, Nagao S, and Tang N
- Subjects
- Particulate Matter analysis, Japan, Environmental Monitoring methods, China, Seasons, Air Pollutants analysis, Polycyclic Aromatic Hydrocarbons analysis
- Abstract
The transboundary transport of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs (NPAHs) aggravated by the East Asian winter monsoon is a major atmospheric environmental issue in East Asia. To thoroughly elucidate the role of the East Asian monsoon on regional PAH and NPAH pollution in East Asia, PM
2.5 -bound PAHs and NPAHs were investigated concurrently at five sites in Beijing and Shenyang in China and Tsukuba, Kanazawa, and Wajima in Japan in autumn (November 2018) and spring (March 2019). During both autumn and spring sampling periods, the concentrations of PM2.5 , PAHs, and NPAHs at sites in China were 1-2 orders of magnitude higher than those at sites in Japan, and showed an opposite temporal variation, with higher concentrations during the autumn sampling period due to intensive emissions and unfavourable weather conditions. During the sampling periods, PAHs at the Beijing and Shenyang sites had mixed sources of traffic emissions and coal and biomass combustion, while those at the Tsukuba, Kanazawa, and Wajima sites were mainly characterized by domestic traffic emissions. In addition, NPAHs at the five sites were jointly affected by primary combustion sources and atmospheric generation, with a greater contribution of atmospheric generation to the Beijing and Shenyang sites. Based on backwards trajectory clustering and concentration-weighted trajectory analysis, external contributions to PM2.5 , PAHs, and NPAHs at each site were relatively stable during the two sampling periods, and potential source areas were mainly distributed in domestic cities and nearby sea areas. Therefore, the apparent temporal differences in the characteristics and sources of pollutants between sites in the two countries indicate that transboundary pollution dominated by the East Asian winter monsoon was unobvious in autumn and spring. The results of the study provide a time-specific solution for the effective management of regional air pollution during the East Asian winter monsoon., 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.)- Published
- 2024
- Full Text
- View/download PDF
20. Carbon conundrums: Geopolitical clashes and market mayhem in the race for sustainability.
- Author
-
Rao A, Hossain MR, Gupta M, Parihar JS, and Sharma GD
- Subjects
- China, European Union, Japan, Russia, Carbon
- Abstract
This research presents an in-depth investigation into the dynamic correlation between geopolitical conflicts and carbon markets utilizing the Time-Varying Parameter Vector Autoregression (TVP-VAR) technique. The analysis focuses on the interconnectedness between the Geopolitical Risk Index Daily (GPRD) and vital carbon pricing instruments, specifically the Intercontinental Exchange Endex European Union Allowance (ECEFDC), KraneShares California Carbon Allowance Strat ETF (KCCAK), Shanghai Environment and Energy Exchange China Emission Allowances Online Transactions (SAXCEA), and S&P Global Ex-Japan LargeMidCap Carbon Efficient Index (SPGJ). The daily fluctuations were traced from May 2021 to July 2023. The analysis is divided into short- and long-term connectedness, with particular emphasis on the impact of the Russia-Ukraine conflict on the GPRD's spillover on carbon markets. The short-term connectedness (1-5 days) between GPRD and ECEFDC shows variability, fluctuating between 10% and 40%. Conversely, long-term connectedness exhibited a significant increase during the conflict, peaking at approximately 34% by mid-2022. The analysis of the Total Dynamic Connectedness (TCI) between the GPRD and the KCCAK indicates comparable magnitudes, although with minor initial discrepancies. The short-term connectedness of GPRD and KCCAK decreases from its peak of approximately 10% to approximately 1%. Conversely, long-term connectedness varies between approximately 32% and 2% from May 2022 onwards. The long-term connectedness between GPRD and SAXCEA revealed variable patterns, peaking at around 18% at the beginning of the sample period and rapidly reducing to around 1% within two months. The analysis of the connectedness between GPRD and the SPG) identifies intense fluctuations in both TCI and long-term connectedness. After an initial increase and decrease, these patterns rebound and experience another increase. This research provides significant insights into the complex dynamics of geopolitical conflicts and carbon markets, particularly the impact of the Russia-Ukraine conflict on carbon market behavior., 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.)
- Published
- 2024
- Full Text
- View/download PDF
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.