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Article ; Online: Urinary cadmium levels in China (1982-2021): Regional trends and influential factors.

Yang, Yadi / Zhang, Yanni / Zhou, Qing / Gu, Yi / Yao, Yijun

2024 Volume 251, Issue Pt 1, Page(s) 118618

Abstract: Despite the significant threat of cadmium exposure in China, a national-level assessment has been conspicuously absent. This study bridges this critical gap by collecting, geospatial analyzing and multivariable regression analyzing published studies on ... ...

Abstract	Despite the significant threat of cadmium exposure in China, a national-level assessment has been conspicuously absent. This study bridges this critical gap by collecting, geospatial analyzing and multivariable regression analyzing published studies on urinary cadmium levels in Chinese from 1982 to 2021. Our research reveals a notable decline trend in cadmium exposure among Chinese populations. However, this trend varies by region, age and gender group, higher levels are seen in the South (1.04 μg/g cr) compared to the North (0.48 μg/g cr), and in adults (1.08 μg/g cr) relative to children (0.33 μg/g cr), with higher levels being more pronounced in females (6.17 μg/g cr). Urinary cadmium is significantly correlated with rice consumption (P < 0.001), while mining activities have been identified as the dominant factor for cadmium exposure in most regions of China, a trend that is evident both in past decades and is expected to continue into the next decade. These findings underscore the need for region-specific environmental and public health strategies, designed to effectively address the distinct cadmium exposure risks in various regions and among different population groups, thus enhancing protection against the adverse effects of cadmium.
Language	English
Publishing date	2024-03-03
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	205699-9
ISSN	1096-0953 ; 0013-9351
ISSN (online)	1096-0953
ISSN	0013-9351
DOI	10.1016/j.envres.2024.118618
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Article ; Online: Clinical application of computed tomographic volumetric imaging in postoperative lung function assessment in patients with lung cancer.

Xu, Zhifu / Wang, Xili / Shen, Zhanxian / Shi, Biao / Zhang, Yanni

BMC medical imaging

2024 Volume 24, Issue 1, Page(s) 99

Abstract: Background: To evaluate the effectiveness of the computed tomographic (CT) volumetric analysis in postoperative lung function assessment and the predicting value for postoperative complications in patients who had segmentectomy for lung cancer.: ... ...

Abstract	Background: To evaluate the effectiveness of the computed tomographic (CT) volumetric analysis in postoperative lung function assessment and the predicting value for postoperative complications in patients who had segmentectomy for lung cancer. Methods: CT scanning and pulmonary function examination were performed for 100 patients with lung cancer. CT volumetric analyses were performed by specific software, for the volume of the inspiratory phase (Vin), the mean inspiratory lung density (MLDin), the volume of expiratory phase (Vex), and the mean lung density at expiratory phase (MLDex). Pulmonary function examination results and CT volumetric analysis results were used to predict postoperative lung function. The concordance and correlations of these values were assessed by Bland-Altman analysis and Pearson correlation analysis, respectively. Multivariate binomial logistic regression analysis was executed to assess the associations of CT data with complication occurrence. Results: Correlations between CT scanning data and pulmonary function examination results were significant in both pre- and post-operation (0.8083 ≤ r ≤ 0.9390). Forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), and the ratio of FVC and FEV1 estimated by CT volumetric analyses showed high concordance with those detected by pulmonary function examination. Preoperative (Vin-Vex) and (MLDex- MLDin) values were identified as predictors for post-surgery complications, with hazard ratios of 5.378 and 6.524, respectively. Conclusions: CT volumetric imaging analysis has the potential to determine the pre- and post-operative lung function, as well as to predict post-surgery complication occurrence in lung cancer patients with pulmonary lobectomy.
MeSH term(s)	Humans ; Lung Neoplasms/surgery ; Lung Neoplasms/diagnostic imaging ; Male ; Female ; Middle Aged ; Aged ; Postoperative Complications/diagnostic imaging ; Respiratory Function Tests ; Tomography, X-Ray Computed/methods ; Pneumonectomy/adverse effects ; Lung/diagnostic imaging ; Lung/physiopathology ; Adult ; Postoperative Period ; Aged, 80 and over ; Vital Capacity
Language	English
Publishing date	2024-04-29
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2061975-3
ISSN	1471-2342 ; 1471-2342
ISSN (online)	1471-2342
ISSN	1471-2342
DOI	10.1186/s12880-024-01268-7
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Article ; Online: An approach for evaluation of grading forecasting index of coal spontaneous combustion by temperature-programmed analysis

Wang, Kai / Li, Yang / Zhang, Yanni / Deng, Jun

Environ Sci Pollut Res. 2023 Jan., v. 30, no. 2 p.3970-3979

2023

Abstract: Focused on the prediction and forecast index of coal spontaneous combustion, the temperature-programmed experiments were carried out to identify the releasing rule of the gaseous compounds with the consideration of coal particle sizes. Based on the ... ...

Abstract	Focused on the prediction and forecast index of coal spontaneous combustion, the temperature-programmed experiments were carried out to identify the releasing rule of the gaseous compounds with the consideration of coal particle sizes. Based on the method of growth rate analysis, critical and dry cracking temperatures were determined, dividing the coal low-temperature oxidation process into three stages. The critical temperature for the spontaneous combustion of the coal is in the range of 60 ~ 70 °C, with the dry cracking temperature ranging from 100 to 110 °C. It was found that the particle sizes had obvious effects on the release of gaseous compounds during the coal heating test. To reduce the influence of coal particle size on the forecasting of coal spontaneous combustion, the combination methods of coefficient of variation and the weighted grey relational analysis were proposed for the selection and evaluation of coal spontaneous combustion indexes. For the tested coal sample, CO₂/CO was selected as the primary index and O₂/(CO + CO₂) and CO₂/O₂ as the alternative indexes. C₂H₄ and C₂H₆ were selected as the index gases to confirm that the coal oxidation reached the dry cracking temperature. This research could provide a reference for the determination of the grading forecasting index of coal spontaneous combustion.
Keywords	carbon dioxide ; coal ; combustion ; particle size ; prediction ; temperature
Language	English
Dates of publication	2023-01
Size	p. 3970-3979.
Publishing place	Springer Berlin Heidelberg
Document type	Article ; Online
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-022-22529-4
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Article: Multiscale thermal behavioral characterization of spontaneous combustion of pre-oxidized coal with different air exposure time

Wang, Kai / Hu, Lihong / Deng, Jun / Zhang, Yanni

Energy. 2023 Jan. 01, v. 262

2023

Abstract: To comprehensively investigate the multi-scale characteristics of coal spontaneous combustion, in situ infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) were utilized. The samples were pre-oxidized at 70 °C for 2, 4, 6, and 8 h ( ... ...

Abstract	To comprehensively investigate the multi-scale characteristics of coal spontaneous combustion, in situ infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) were utilized. The samples were pre-oxidized at 70 °C for 2, 4, 6, and 8 h (the raw coal and above samples were named R₀, R₂, R₄, R₆, and R₈), then the secondary oxidation experiments were carried out. The results showed that the contents of –OH, –C=O, and –C=C- increased with the pre-oxidation time. The aromatic structure of pre-oxidized coal is more susceptible to oxygen erosion during secondary oxidation. The migration and transformation of –OH, –C=O are the underlying causes of water evaporation and gas desorption during low-temperature oxidation. The spontaneous combustion behaviors in stage I and stage II have different reaction mechanisms and kinetic characteristics. In light of Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS), the apparent activation energy of stage I is R₀>R₂>R₄>R₆>R₈, and stage II is R₆>R₈>R₂>R₄>R₀. Long pre-oxidation time in stage I will inhibit coal spontaneous combustion, while the opposite is true in stage II. By the Pearson correlation analysis, –OH is the key structure affecting the low-temperature endothermic stage of coal, revealing the correlation between the multi-scale thermal behavior of pre-oxidized coal spontaneous combustion.
Keywords	activation energy ; air ; calorimetry ; coal ; combustion ; desorption ; endothermy ; energy ; evaporation ; exposure duration ; infrared spectroscopy ; oxygen ; thermal properties
Language	English
Dates of publication	2023-0101
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2019804-8
ISSN	0360-5442 ; 0360-5442
ISSN (online)	0360-5442
ISSN	0360-5442
DOI	10.1016/j.energy.2022.125397
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Article: Physical activity and academic procrastination in Chinese college students: The serial mediating roles of physical self-perceptions and self-esteem.

Ren, Kai / Chen, Xing / Zhang, Yanni / Sun, Fang / Peng, Fan

Frontiers in psychology

2023 Volume 14, Page(s) 1083520

Abstract: Studies have demonstrated that physical activity (PA) is negatively associated with academic procrastination. However, there is limited research on the mechanism underlying this relationship. This study aims to explore the relationship between PA and ... ...

Abstract	Studies have demonstrated that physical activity (PA) is negatively associated with academic procrastination. However, there is limited research on the mechanism underlying this relationship. This study aims to explore the relationship between PA and academic procrastination by investigating the roles of physical self-perceptions and self-esteem. 916 college students (650 females;
Language	English
Publishing date	2023-03-10
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2563826-9
ISSN	1664-1078
ISSN	1664-1078
DOI	10.3389/fpsyg.2023.1083520
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Article ; Online: Reaction heat effect and change characteristics of key groups in coal-oxygen intrinsic reaction path.

Zhang, Yanni / Duan, Zhengxiao / Deng, Jun / Shu, Pan / Yang, Jingjing

Environmental science and pollution research international

2023 Volume 30, Issue 41, Page(s) 94865–94877

Abstract: The intrinsic reaction of coal with oxygen in the process of low-temperature oxidation is the main reaction path leading to self-heating and spontaneous combustion of coal. Most of the existing studies regard the coal oxidation as an overall reaction, ... ...

Abstract	The intrinsic reaction of coal with oxygen in the process of low-temperature oxidation is the main reaction path leading to self-heating and spontaneous combustion of coal. Most of the existing studies regard the coal oxidation as an overall reaction, ignoring the multi-path characteristics of coal low-temperature oxidation, and it is difficult to accurately explore the intrinsic reaction characteristics between coal with oxygen. Therefore, the low-temperature oxidation process of coal was studied by using a C80 microcalorimeter and in situ FTIR technology from the macro and micro levels. The "profile subtraction method" was used to study the coal-oxygen intrinsic reaction process, and the reaction heat effect and the change characteristics of key functional groups in the process were analyzed. Furthermore, the gray correlation analysis method was used to study the relevant characteristic parameters in the reaction process and grasp the essential structure-activity relationship. The experimental results show that, compared with the overall reaction process in air atmosphere, the change in the heat release of the coal-oxygen intrinsic reaction path has changed to different degrees, and the change in the slow oxidation stage is the most significant (the heat absorption decreases by 70.1-90.9%). In addition, the characteristic temperature points show different degrees of advance, of which the initial exothermic temperature point is the largest (about 21-46 °C), which directly leads to a significant shortening of the slow oxidation stage (30.1-47.4%). The changes of functional groups in the intrinsic reaction path are more regular. With the increase of temperature, the oxygen-containing functional groups -C=O and the aliphatic hydrocarbon functional groups -CH
MeSH term(s)	Coal/analysis ; Hot Temperature ; Oxygen/analysis ; Temperature ; Hydrocarbons
Chemical Substances	Coal ; Oxygen (S88TT14065) ; Hydrocarbons
Language	English
Publishing date	2023-08-04
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-023-29107-2
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Article ; Online: An approach for evaluation of grading forecasting index of coal spontaneous combustion by temperature-programmed analysis.

Wang, Kai / Li, Yang / Zhang, Yanni / Deng, Jun

Environmental science and pollution research international

2022 Volume 30, Issue 2, Page(s) 3970–3979

Abstract	Focused on the prediction and forecast index of coal spontaneous combustion, the temperature-programmed experiments were carried out to identify the releasing rule of the gaseous compounds with the consideration of coal particle sizes. Based on the method of growth rate analysis, critical and dry cracking temperatures were determined, dividing the coal low-temperature oxidation process into three stages. The critical temperature for the spontaneous combustion of the coal is in the range of 60 ~ 70 °C, with the dry cracking temperature ranging from 100 to 110 °C. It was found that the particle sizes had obvious effects on the release of gaseous compounds during the coal heating test. To reduce the influence of coal particle size on the forecasting of coal spontaneous combustion, the combination methods of coefficient of variation and the weighted grey relational analysis were proposed for the selection and evaluation of coal spontaneous combustion indexes. For the tested coal sample, CO
MeSH term(s)	Temperature ; Carbon Dioxide/analysis ; Coal/analysis ; Spontaneous Combustion ; Gases/analysis
Chemical Substances	Carbon Dioxide (142M471B3J) ; Coal ; Gases
Language	English
Publishing date	2022-08-12
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-022-22529-4
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Article ; Online: Exploring acceptable risk in engineering and operations research and management science by bibliometric analysis.

Zhang, Yanni / Duan, Zhengxiao / Shu, Pan / Deng, Jun

Risk analysis : an official publication of the Society for Risk Analysis

2022 Volume 43, Issue 8, Page(s) 1539–1556

Abstract: As the decision-making basis for "safety" in risk management and risk assessment activities, acceptable risk has always been an important topic of risk-related research. Based on the records in the Science Citation Index Expanded database and Social ... ...

Abstract	As the decision-making basis for "safety" in risk management and risk assessment activities, acceptable risk has always been an important topic of risk-related research. Based on the records in the Science Citation Index Expanded database and Social Sciences Citation Index database via the Web of Science Core Collection, 1124 articles or reviews related to acceptable risk in engineering and operations research and management science were retrieved. These documents, published between 1961 and 2021, covered 3056 authors, 75 countries/territories, 1296 institutions, and 323 journals. In this study, bibliometric data such as annual growth trends were analyzed by using descriptive statistics. Through the co-occurrence maps created by CiteSpace and Gephi, the most productive and influential countries/territories, institutions, and authors as well as their cooperation networks were identified. Further analysis was conducted to determine the core publications and publication sources in this field through co-citation analysis. Insights into focus areas and research topics over time were obtained through keyword co-occurrence analysis. This study provides a macroscopic overview of acceptable risk research and may help researchers better understand this research field and predict its dynamic directions.
Language	English
Publishing date	2022-10-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	778660-8
ISSN	1539-6924 ; 0272-4332
ISSN (online)	1539-6924
ISSN	0272-4332
DOI	10.1111/risa.14049
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Article: Comparison of combustion characteristics and kinetics of Jurassic and Carboniferous-Permian coals in China

Wang, Kai / Han, Tao / Deng, Jun / Zhang, Yanni

Energy. 2022 Sept. 01, v. 254

2022

Abstract: The study of combustion characteristics and kinetic parameters plays an important role in the determination of the coal fire combustion regime. Four Chinese coals from the Jurassic and Carboniferous-Permian periods were selected to study the influence of ...

Abstract	The study of combustion characteristics and kinetic parameters plays an important role in the determination of the coal fire combustion regime. Four Chinese coals from the Jurassic and Carboniferous-Permian periods were selected to study the influence of the geological time on the coal combustion characteristics. The thermogravimetry and differential scanning calorimetry with different heating rates were employed to identify the combustion characteristics and oxidation reaction kinetics of coal samples. It was found that a high heating rate could boost the characteristic temperatures of coal, and the curves characteristics of thermogravimetry and differential scanning calorimetry of all coal samples were the same. The ignition temperatures of coals from the Carboniferous-Permian period were lower than that of coals from the Jurassic period. During the coal combustion stage, the heat release of the Carboniferous-Permian coal samples was 166.86–2423.84 J/g, higher than that of the Jurassic coal samples. By Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, and Starink methods, it was found that the activation energy required for combustion reaction of Carboniferous-Permian coals was 37.18–88.95 kJ/mol, lower than that of Jurassic coals, revealing that the combustion performance of Carboniferous-Permian coals was superior to that of Jurassic coals.
Keywords	Jurassic period ; activation energy ; coal ; combustion ; energy ; heat ; reaction kinetics ; thermogravimetry
Language	English
Dates of publication	2022-0901
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2019804-8
ISSN	0360-5442 ; 0360-5442
ISSN (online)	0360-5442
ISSN	0360-5442
DOI	10.1016/j.energy.2022.124315
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Article ; Online: A multiple isotope (S, H, O and C) approach to estimate sulfate increasing mechanism of groundwater in coal mine area

Huang, Pinghua / Zhang, Yanni / Li, Yuanmeng / Gao, Hongfei / Cui, Mengke / Chai, Shuangwei

Science of the Total Environment. 2023 Nov., v. 900 p.165852-

2023

Abstract: Groundwater in North China type coal mine area is an important source of domestic, industrial and agricultural water. To explore the sulfate increasing mechanism of groundwater in mining area and identify key influencing factors. In this paper, ... ...

Abstract	Groundwater in North China type coal mine area is an important source of domestic, industrial and agricultural water. To explore the sulfate increasing mechanism of groundwater in mining area and identify key influencing factors. In this paper, hydrochemistry and multi-isotope tracer techniques such as δ³⁴SSO₄, δ¹⁸OSO₄, δ²HH₂O, δ¹⁸OH₂O and δ¹³CDIC were used to study the groundwater circulation law and the migration and transformation mechanism of sulfate and carbonate in coal mine area. The results show that: the hydrochemical types of groundwater in the coal mine area are mainly HCO₃⁻ and SO₄²⁻ anions, while the cations are mainly Ca²⁺ and Mg²⁺. The sulfate content is significantly increased, and the pH shows weak alkalinity; the relationship between δ¹⁸OH₂O and δ¹⁸HH₂O shows that the dynamic field of groundwater changes significantly after coal mining or closure, and limestone water mainly comes from surface water recharge through ‘skylight’ infiltration. The relationships between δ¹⁸OSO₄ and δ¹⁸OH₂O, δ³⁴SSO₄ and δ¹⁸OSO₄ show that the sulfate in groundwater of coal mine area is mainly derived from sulfide oxidation. The ∆δ¹⁸OSO₄₋H₂O value of groundwater in coal mine area is greater than 8 ‰, and the oxygen content in sulfate is 25 %–75 % from oxygen in water, indicating that coal mining has disturbed the groundwater in the study area from reducing environment to oxidizing environment, promoted sulfide oxidation, and accelerated the dissolution of carbonate minerals. The δ¹³CDIC value and δ³⁴SSO₄ value in the coal mine area are inversely proportional. The δ¹³CDIC of groundwater in the coal mine area is affected by the δ³⁴SSO₄ value to a certain extent. Sulfuric acid participates in the dissolution of carbonate minerals, making the pH value weak and alkaline as a whole. This paper expounds the migration and transformation law of sulfate in groundwater in coal mine area, which has practical significance for groundwater quality management. The research results can provide theoretical support for the rational development and utilization of groundwater resources in coal mine areas.
Keywords	alkalinity ; calcium ; carbonates ; coal ; environment ; groundwater ; hydrochemistry ; isotopes ; limestone ; oxidation ; oxygen ; pH ; sulfates ; sulfides ; sulfuric acid ; surface water ; water quality ; China ; Limestone aquifer ; Coal mining ; Multi-isotope ; Sulfate increasing mechanism
Language	English
Dates of publication	2023-11
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.165852
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