scholarly journals Assessment of Typical Heavy Metals in Human Hair of Different Age Groups and Foodstuffs in Beijing, China

2017 ◽  
Vol 14 (8) ◽  
pp. 914 ◽  
Author(s):  
Gang Liang ◽  
Ligang Pan ◽  
Xinhui Liu
Keyword(s):  
Heavy Metals ◽  
Human Hair ◽  
Age Groups ◽  
Beijing China

EXPRESS: Serum Carbohydrate Antigen72-4 levels decrease with age in females but not males in Beijing, China

2021 ◽  
pp. 000456322110269
Author(s):  
Tongmei Duan ◽  
Xun Chen ◽  
Jing Wu ◽  
Ronghai Li ◽  
Huijuan Guo ◽  
...  
Keyword(s):  
Age Groups ◽  
Reference Interval ◽  
Carbohydrate Antigen ◽  
Female Group ◽  
Healthy Population ◽  
Age Difference ◽  
Significant Difference ◽  
The Difference ◽  
And Gender ◽  
Beijing China

Objective: Carbohydrate antigen 72-4 (CA72-4) is widely used in the diagnosis and monitoring of many cancers. However, there are few studies on the differences of CA72-4 levels in terms of age and gender. Methods: 10957 healthy subjects were divided into two groups according to gender and three age groups. The serum CA72-4 were detected. Statistical analysis was performed by SPSS. Results: The CA72-4 level in female group was significantly higher than that in male group. The level of CA72-4 gradually decreased with age. Compared with the age >60 group, the CA72-4 levels were increased in the age 46-60 group and 16-45 group (P >0.05, respectively). To better observe the age difference, the age 16-45 and 46–60 group were combined into the age 16-60 group. In comparison to the age >60 group, the CA72-4 level of age 16-60 group was significantly increased (P =0.000). In the age >60 group, there was no difference between genders. Nevertheless, the difference between the sexes in the age 16-60 group was significant (P =0.023). Conclusions: The reference interval of CA72-4 for local healthy population was established. CA72-4 levels gradually decreased with the increase of age, and CA72-4 level in females aged 16-60 years (0-18.0 U/mL) was higher than in males (0-14.5 U/mL), however there was no gender difference in the age group above 60 years old (0-14.5 U/mL). Moreover, male CA72-4 was no significant difference among all age groups, while the potential mechanism of female changes with age needed further study.

Heavy metals in urban soils with various types of land use in Beijing, China

2011 ◽  
Vol 186 (2-3) ◽  
pp. 2043-2050 ◽  
Author(s):  
Xinghui Xia ◽  
Xi Chen ◽  
Ruimin Liu ◽  
Hong Liu
Keyword(s):  
Heavy Metals ◽  
Land Use ◽  
Urban Soils ◽  
Beijing China

PCDD/F, PAH and heavy metals in the sewage sludge from six wastewater treatment plants in Beijing, China

Chemosphere ◽  
2007 ◽  
Vol 66 (2) ◽  
pp. 353-361 ◽  
Author(s):  
Jiayin Dai ◽  
Muqi Xu ◽  
Jiping Chen ◽  
Xiangping Yang ◽  
Zhenshan Ke
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Wastewater Treatment Plants ◽  
Beijing China

scholarly journals Health Risk Assessment of Heavy Metals in Road Dusts in Urban Parks of Beijing, China

2013 ◽  
Vol 18 ◽  
pp. 299-309 ◽  
Author(s):  
Yiran Du ◽  
Bo Gao ◽  
Huaidong Zhou ◽  
Xinxin Ju ◽  
Hong Hao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Urban Parks ◽  
Beijing China ◽  
Road Dusts

scholarly journals A 8-year retrospective clinical analysis of 272 patients of epidemic Keratoconjunctivitis in Beijing, China

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Wenbo Hou ◽  
Xuguang Sun ◽  
Jun Feng ◽  
Yang Zhang ◽  
Zhiqun Wang
Keyword(s):  
Central Region ◽  
Age Groups ◽  
Clinical Signs ◽  
Clinical Manifestations ◽  
Clinical Analysis ◽  
Peripheral Region ◽  
Considerable Proportion ◽  
Epidemic Keratoconjunctivitis ◽  
High Incidence ◽  
Beijing China

Abstract Background Epidemic keratoconjunctivitis (EKC) is one of the most common eye infections worldwide. The analysis of clinical manifestations in different age groups help better know the disease. This study aims to provide more detailed analysis of 272 cases of EKC in 8 years, describe the differences of the clinical features among different age groups, and establish new clinical grading criteria. Methods 272 individuals were reviewed (2011–2019) in Beijing China. All the patients were classified into 3 grades according to the new grading criteria. The typical clinical signs of EKC and the photographs of the multiple subepithelial corneal infiltrates (MSI) were collected and analyzed. The number of 3 grades among and within different age groups were compared. The incidence of the typical signs among and within different age groups were compared. The proportion of each region of the cornea involved by MSI were compared. Results No significant differences were detected among the 4 groups in terms of the number of mild, moderate and severe cases, no matter in all-patients analysis (P = 0.271) nor in acute-phase-patients analysis (P = 0.203). The proportion of the severe cases was the highest among all patients (P = 0.000). Among the incidence of the typical signs, corneal involvement was the most common accounting for 69.8% (P<0.05). The probability of central region involvement was significantly higher than that of pericentral region involvement (P = 0.015) and peripheral region involvement (P = 0.000). Conclusions Appropriate attention should be paid on EKC, because of the considerable proportion of severe cases, the high incidence of corneal lesion, and the high incidence of central region involvement of MSI.

scholarly journals How Have Travelers Changed Mode Choices for First/Last Mile Trips after the Introduction of Bicycle-Sharing Systems: An Empirical Study in Beijing, China

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Aihua Fan ◽  
Xumei Chen ◽  
Tao Wan
Keyword(s):  
Choice Behavior ◽  
Rapid Development ◽  
Age Groups ◽  
Multinomial Logit Model ◽  
Travel Choice ◽  
Last Mile ◽  
Before And After ◽  
Beijing China ◽  
Significant Factors ◽  
Last Mile Problem

In recent years, there has been rapid development in bicycle-sharing systems (BSS) in China. Moreover, such schemes are considered promising solutions to the first/last mile problem. This study investigates the mode choice behaviors of travelers for first/last mile trips before and after the introduction of bicycle-sharing systems. Travel choice models for first/last mile trips are determined using a multinomial logit model. It also analyzes the differences in choice behavior between the young and other age groups. The findings show that shared bicycles become the preferred mode, while travelers preferred walking before bicycle-sharing systems were implemented. Gender, bicycle availability, and travel frequency were the most significant factors before the implementation of bicycle-sharing systems. However, after implementation, access distance dramatically affects mode choices for first/last mile trips. When shared bicycles are available, the mode choices of middle-aged group depend mainly on gender and access distance. All factors are not significant for the young and aged groups. More than 80% of public transport travelers take walking and shared bicycles as feeder modes. The proposed models and findings contribute to a better understanding of travelers’ choice behaviors and to the development of solutions for the first/last mile problem.

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