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1. Aroma patterns of Beijing rice vinegar and their potential biomarker for traditional Chinese cereal vinegars

Author:
Xu, Dandan,   et al.   ; Zhang, Xin; Wang, Peng; Wang, Wenping; Zhao, Yan;     Show all 5 Authors
Source:
Food research international 2019
ISSN:
0963-9969
Subject:
acetic acid; aldehydes; biomarkers; esters; ethanol; fermentation; gas chromatography-mass spectrometry; headspace analysis; heterocyclic compounds; ketones; odor compounds; odors; polyphenols; principal component analysis; rice; sensory evaluation; solid phase microextraction; vinegars; China
Abstract:
... Beijing rice vinegar is a typically traditional Chinese cereal vinegar and prevalent in the northern part of China. In this study, the volatile aroma analysis of different fermentation stages of Beijing rice vinegar was carried out by headspace-solid phase micro-extraction coupled with gas chromatography mass spectrometry (HS-SPME-GC-MS). The aroma could be classified into acids, alcohols, esters, ...
DOI:
10.1016/j.foodres.2019.02.008

2. Quantifying the influences of grazing, climate and their interactions on grasslands using Landsat TM images

Author:
Xu, Dandan,   et al.   ; Koper, Nicola; Guo, Xulin;     Show all 3 Authors
Source:
Grassland science 2018 v.64 no.2 pp. 118-127
ISSN:
1744-6961
Subject:
Landsat; cattle; climate; data collection; ecosystems; grazing intensity; grazing management; leaf area index; mixed-grass prairies; stocking rate; temperature; thematic maps; Saskatchewan
Abstract:
... Appropriate grazing management ensures sustainable productivities of grassland ecosystems while maintaining grassland services. Thus, it is important to understand the influences of grazing management on grassland ecosystems, which can be monitored by measuring grassland response (e.g. leaf area index [LAI]) to grazing management. However, the measured grassland response includes the impact not on ...
DOI:
10.1111/grs.12192

3. Trophic consequences of non‐native species for commercial fish in a backwater bay of the Three Gorges Reservoir, Southwest China

Author:
Xu, Dandan,   et al.   ; Li, Bin; Luo, Huan; Wang, Yongming; Xie, Chongyou; Wang, Zhijian; Xiong, Xiaoqin; Tao, Min;     Show all 8 Authors
Source:
Journal of applied ichthyology 2019 v.35 no.5 pp. 1119-1128
ISSN:
0175-8659
Subject:
Coilia nasus; anchovies; carbon; diet; indigenous species; introduced species; lakes; nitrogen; rivers; stable isotopes; viability; water reservoirs; China; Yangtze River
Abstract:
... Trophic niche overlap in native and alien fish species can lead to competitive interactions whereby non‐native fishes outcompete indigenous individuals and eventually affect the viability of natural populations. The species Erythroculter mongolicus and Erythroculter ilishaeformis (belonging to the Culterinae), which are two commercially important fish species in the backwater bay of the Pengxi Riv ...
DOI:
10.1111/jai.13961

4. The performance of Tetranychus urticae on five melon cultivars is correlated with leaf thickness

Author:
Xu, Dandan,   et al.   ; Wang, Ke; Zhang, Yating; Wang, Huaisong; & , Qingjun Wu; Wang, Shaoli;     Show all 6 Authors
Source:
Systematic and applied acarology 2019 v.24 no.4 pp. 645-658
ISSN:
1362-1971
Subject:
Tetranychus urticae; adults; cultivars; fecundity; leaves; life tables; longevity; melons; mites; pests; population growth; trichomes
Abstract:
... The two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), is an important pest of melons. In this laboratory study, we used two-sex life table to evaluate the performance of T. urticae on five melon cultivars (IVF28, IVF118, IVF168, IVF437, and Yangjiaomi). We also evaluated the correlation between mite population growth and morphological characteristics of leaves. The results ...
DOI:
10.11158/saa.24.4.10

5. One-step hydrothermal synthesis and optical properties of self-quenching-resistant carbon dots towards fluorescent ink and as nanosensors for Fe³⁺ detection

Author:
Xu, Dandan,   et al.   ; Lei, Fang; Chen, Haohong; Yin, Luqiao; Shi, Ying; Xie, Jianjun;     Show all 6 Authors
Source:
RSC advances 2019 v.9 no.15 pp. 8290-8299
ISSN:
2046-2069
Subject:
biosensors; carbon quantum dots; citric acid; fluorescence; hot water treatment; ions; iron; nitrogen; optical properties; photoluminescence; polyvinylpyrrolidone
Abstract:
... In our work, blue photoluminescent N-doped carbon dots (CDs) were developed via a green and simple hydrothermal method with citric acid and polyvinyl pyrrolidone (PVP K-30) as the carbon source and the nitrogen source, respectively. The as-prepared CDs have a high fluorescent quantum yield of 30.21% and considerable luminescence stability. The fluorescence intensity of the CDs was found to be effe ...
DOI:
10.1039/c8ra10570g

6. Acute effects of temperature exposure on blood pressure: An hourly level panel study

Author:
Xu, Dandan,   et al.   ; Zhang, Yi; Wang, Bo; Yang, Haibing; Ban, Jie; Liu, Fangchao; Li, Tiantian;     Show all 7 Authors
Source:
Environment international 2019 v.124 pp. 493-500
ISSN:
0160-4120
Subject:
acute effects; acute exposure; alcohols; blood; cold; diastolic blood pressure; epidemiological studies; heat; monitoring; nonlinear models; risk reduction; systolic blood pressure; temperature; China
Abstract:
... Several epidemiological studies have shown that blood pressure changes with temperature based on the daily temperature and linear relationship assumption. However, little is known about the true curve shape of the relationship between temperature and blood pressure.The objective of this study was to investigate the non-linear relationship between hourly temperature and blood pressure.This is a pro ...
DOI:
10.1016/j.envint.2019.01.045

7. Asymmetric Transfer Hydrogenation of Heterobicyclic Alkenes with Water as Hydrogen Source

Author:
Xu, Dandan,   et al.   ; Shen, Guoli; Chen, Jingchao; Zhang, Xia; Zhou, Yongyun; Fan, Baomin;     Show all 6 Authors
Source:
Organic letters 2019 v.21 no.5 pp. 1364-1367
ISSN:
1523-7052
Subject:
alkenes; catalysts; chemical structure; enantioselectivity; hydrogen; hydrogenation; palladium; reducing agents; zinc
Abstract:
... The asymmetric transfer hydrogenation of heterobicyclic alkenes was accomplished by using water as the sole hydrogen source. The transformation was co-catalyzed by Pd(OAc)₂/Zn(OTf)₂ dual catalyst with metallic zinc as reducing agent. Various azabenzonorbornadienes and oxabenzonorbornadienes were transformed to the corresponding chiral 1,2-dihydronaphthalenes by the asymmetric reductive ring-openin ...
DOI:
10.1021/acs.orglett.9b00059

8. Fulvic acid-induced disease resistance to Botrytis cinerea in table grapes may be mediated by regulating phenylpropanoid metabolism

Author:
Xu, Dandan,   et al.   ; Deng, Yizhen; Xi, Pinggen; Yu, Ge; Wang, Qi; Zeng, Qingqian; Jiang, Zide; Gao, Lingwang;     Show all 8 Authors
Source:
Food chemistry 2019
ISSN:
0308-8146
Subject:
Botrytis cinerea; antifungal properties; biosynthesis; blight; coumarate-CoA ligase; financial economics; flavonoids; food transport; fulvic acids; gene expression regulation; genes; gray mold; mechanism of action; phenolic compounds; phenylalanine ammonia-lyase; postharvest diseases; table grapes
Abstract:
... Gray mold caused by Botrytis cinerea is a major postharvest disease of table grapes that leads to enormous economic losses during storage and transportation. The objective of this study was to evaluate the effectiveness of fulvic acid on controlling gray mold of table grapes and explore its mechanism of action. The results showed that fulvic acid application significantly reduced downy blight seve ...
DOI:
10.1016/j.foodchem.2019.02.015

9. Effects of ambient temperature on myocardial infarction: A systematic review and meta-analysis

Author:
Xu, Dandan,   et al.   ; Sun, Zhiying; Chen, Chen; Li, Tiantian;     Show all 4 Authors
Source:
Environmental pollution 2018 v.241 pp. 1106-1114
ISSN:
0269-7491
Subject:
ambient temperature; climate; cold stress; confidence interval; databases; heat; latitude; meta-analysis; models; morbidity; mortality; myocardial infarction; relative risk; risk reduction; systematic review; weather
Abstract:
... Previous studies have suggested that ambient temperature is associated with the mortality and morbidity of myocardial infarction (MI) although consistency among these investigations is lacking. We performed a meta-analysis to investigate the relationship between ambient temperature and MI. The PubMed, Web of Science, and China National Knowledge Infrastructure databases were searched back to Augus ...
DOI:
10.1016/j.envpol.2018.06.045

10. A Bayesian nonparametric approach to causal inference on quantiles

Author:
Xu, Dandan,   et al.   ; Daniels, Michael J.; Winterstein, Almut G.;     Show all 3 Authors
Source:
Biometrics 2018 v.74 no.3 pp. 986-996
ISSN:
0006-341X
Subject:
Bayesian theory; biometry; kidneys; models
Abstract:
... We propose a Bayesian nonparametric approach (BNP) for causal inference on quantiles in the presence of many confounders. In particular, we define relevant causal quantities and specify BNP models to avoid bias from restrictive parametric assumptions. We first use Bayesian additive regression trees (BART) to model the propensity score and then construct the distribution of potential outcomes given ...
DOI:
10.1111/biom.12863

11. Trophic interactions in the Zoige Alpine wetland on the eastern edge of the Qinghai–Tibetan Plateau inferred by stable isotopes

Author:
Xu, Dandan,   et al.   ; Li, Bin; Chen, Fajun; Wang, Zhijian; Tao, Min;     Show all 5 Authors
Source:
Limnology 2018 v.19 no.3 pp. 285-297
ISSN:
1439-8621
Subject:
Ecdyonurus; Schizopygopsis; animal communities; aquatic ecosystems; biodiversity; biodiversity conservation; bogs; carbon; macroinvertebrates; nitrogen; peatlands; stable isotopes; trophic levels; wet season; zooplankton; China
Abstract:
... The Zoige wetland ecosystem of the eastern edge of the Qinghai–Tibetan Plateau is the largest plateau peat bog worldwide and an important biodiversity conservation centre in China. Nevertheless, limited information is available about this Alpine wetland aquatic ecosystem, including its food-web structure and complexity. In this study, we analysed the trophic interactions among dominant organisms i ...
DOI:
10.1007/s10201-018-0546-2

12. Automatic smartphone-based microfluidic biosensor system at the point of care

Author:
Xu, Dandan,   et al.   ; Huang, Xiwei; Guo, Jinhong; Ma, Xing;     Show all 4 Authors
Source:
Biosensors & bioelectronics 2018 v.110 pp. 78-88
ISSN:
0956-5663
Subject:
DNA; analytical methods; antibodies; bacteria; biosensors; blood; blood glucose; humans; image analysis; immunoassays; microfluidic technology; mobile telephones; point-of-care testing; sensory system
Abstract:
... Point-of-care testing technique is increasingly important for healthcare management in human being's daily life. However, traditional biosensor systems for health care are relatively expensive, bulky and hard-to-handle, which largely limits their use in point of care testing. The problems mentioned above are successfully addressed with the popularization of smartphone and the development of microf ...
DOI:
10.1016/j.bios.2018.03.018

13. Design and application of a web-based real-time personal PM2.5 exposure monitoring system

Author:
Xu, Dandan,   et al.   ; Sun, Qinghua; Zhuang, Jia; Du, Yanjun; Li, Tiantian;     Show all 5 Authors
Source:
The Science of the total environment 2018 v.627 pp. 852-859
ISSN:
0048-9697
Subject:
Internet; cities; decision making; epidemiological studies; labor; monitoring; particulates; public health; China
Abstract:
... Growing demand from public health research for conduct large-scale epidemiological studies to explore health effect of PM2.5 was well-documented. To address this need, we design a web-based real-time personal PM2.5 exposure monitoring system (RPPM2.5 system) which can help researcher to get big data of personal PM2.5 exposure with low-cost, low labor requirement, and low operating technical requir ...
DOI:
10.1016/j.scitotenv.2018.01.299

14. Acute effects of PM2.5 on lung function parameters in schoolchildren in Nanjing, China: a panel study

Author:
Xu, Dandan,   et al.   ; Zhang, Yi; Zhou, Lian; Li, Tiantian;     Show all 4 Authors
Source:
Environmental science and pollution research international 2018 v.25 no.15 pp. 14989-14995
ISSN:
0944-1344
Subject:
acute effects; acute exposure; air pollution; developing countries; experimental design; health promotion; lung function; particulates; regression analysis; school children; China
Abstract:
... The association between exposure to ambient particulate matter (PM) and reduced lung function parameters has been reported in many works. However, few studies have been conducted in developing countries with high levels of air pollution like China, and little attention has been paid to the acute effects of short-term exposure to air pollution on lung function. The study design consisted of a panel ...
DOI:
10.1007/s11356-018-1693-z

15. Factors Influencing Morphological Characteristics of Keratella cochlearis in Lake Tingtang

Author:
Xu, Dandan,   et al.   ; Ge, Yali; Xi, Yilong; Ma, Jie;     Show all 4 Authors
Source:
Proceedings of the National Academy of Sciences, India, Section B: biological sciences 2018 v.88 no.1 pp. 421-428
ISSN:
0369-8211
Subject:
Cladocera; Rotifera; body length; environmental factors; eutrophication; lakes; morphometry; morphs; spatial variation; temporal variation; water temperature; China
Abstract:
... Rotifers were collected fortnightly between February 2009 and January 2010 at two sampling sites in subtropical, eutrophic lake Tingtang, China. The spatio-temporal variations in the morphological characteristics of Keratella cochlearis were documented, and the relationships between each of the morphometric parameters and ecological factors were evaluated. Unspined K. cochlearis occurred more freq ...
DOI:
10.1007/s40011-016-0768-1

16. Aminated EVOH nanofiber membranes for Cr(vi) adsorption from aqueous solution

Author:
Xu, Dandan,   et al.   ; Lu, Jianwei; Yan, Shan; Xiao, Ru;     Show all 4 Authors
Source:
RSC advances 2018 v.8 no.2 pp. 742-751
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; amination; aqueous solutions; butyrates; cellulose acetate; chromium; composite polymers; endothermy; extrusion; models; nanofibers; pH; scanning electron microscopy; sorption isotherms; thermodynamics
Abstract:
... Ethylene vinyl alcohol (EVOH) nanofiber membranes were prepared by melt-blending extrusion with cellulose acetate butyrate ester (CAB) as the matrix and a high-speed flow deposition process. Then, aminated-EVOH (l-Lys/EVOH, Cy/l-Lys/EVOH and DETA/EVOH) nanofiber membranes were prepared for hexavalent chromium [Cr(vi)] removal by facile chemical modification on the surface of EVOH nanofiber membran ...
DOI:
10.1039/c7ra11940b

17. Health risk of childhood exposure to PCDD/Fs emitted from a municipal waste incinerator in Zhejiang, China

Author:
Xu, Dandan,   et al.   ; Xu, Peiwei; Chen, Zhijian; Wu, Lizhi; Chen, Yuan; Shen, Haitao; Han, Jianlong; Wang, Xiaofeng; Lou, Xiaoming;     Show all 9 Authors
Source:
The Science of the total environment 2019 v.689 pp. 937-944
ISSN:
0048-9697
Subject:
DNA damage; DNA hypomethylation; blood; childhood; comet assay; dibenzofuran; eggs; epigenetics; flow cytometry; hematologic tests; incinerators; particulates; polychlorinated dibenzodioxins; polychlorinated dibenzofurans; rice; risk; school children; soil; wastes; China
Abstract:
... This study aimed to evaluate the body burdens of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and their associated health impacts toward school-age children living near a municipal waste incinerator (MWI). A total of 82 children from the exposure area and 49 from the control area were recruited. We measured blood PCDD/F levels, conducted comet assays, calculated the percentage of ...
DOI:
10.1016/j.scitotenv.2019.06.425

18. Body burdens of heavy metals associated with epigenetic damage in children living in the vicinity of a municipal waste incinerator

Author:
Xu, Dandan,   et al.   ; Xu, Peiwei; Chen, Zhijian; Chen, Yuan; Feng, Lingfang; Wu, Lizhi; Wang, Xiaofeng; Lou, Xiaoming; Lou, Jianlin;     Show all 9 Authors
Source:
Chemosphere 2019 v.229 pp. 160-168
ISSN:
0045-6535
Subject:
DNA; cadmium; chromium; comet assay; drinking water; epigenetics; flow cytometry; genotoxicity; heavy metals; hematologic tests; lead; lymphocytes; methylation; rice; school children; soil; spectrometers; surface antigens; thyrotropin; triiodothyronine; vegetables
Abstract:
... To evaluate the body burdens of heavy metals correlated with health impact on school-age children living around a waste incinerator. A total of 81 children from the exposure area and 95 from the control area were recruited in our study. We measured the blood levels of chromium (Cr), cadmium (Cd) and lead (Pb) by an inductively coupled plasma mass spectrometer (ICP-MS), conducted comet assays, calc ...
DOI:
10.1016/j.chemosphere.2019.05.016

19. Photocatalyzed oxidative dehydrogenation of hydrazobenzenes to azobenzenes

Author:
Xu, Dandan,   et al.   ; LvThese authors contributed equally., Haiping; Laishram, Ronibala Devi; Li, Jiayan; Zhou, Yongyun; More, Sagar; Dai, Yuze; Fan, Baomin;     Show all 8 Authors
Source:
Green chemistry 2019 v.21 no.15 pp. 4055-4061
ISSN:
1463-9270
Subject:
dehydrogenation; dyes; green chemistry; light; moieties; photocatalysis; photocatalysts
Abstract:
... Visible light mediated oxidative dehydrogenation of hydrazobenzenes under an ambient atmosphere using an organic dye as a photocatalyst was reported for the first time. The reaction provides an environmentally benign method for the preparation of azobenzenes in excellent yields with good functional group tolerance. ...
DOI:
10.1039/c9gc01235d

20. High intake of persistent organic pollutants generated by a municipal waste incinerator by breastfed infants

Author:
Xu, Dandan,   et al.   ; Xu, Peiwei; Wu, Lizhi; Chen, Yuan; Wang, Xiaofeng; Shen, Haitao; Han, Jianlong; Fu, Qiuli; Chen, Zhijian; Lou, Xiaoming;     Show all 10 Authors
Source:
Environmental pollution 2019 v.250 pp. 662-668
ISSN:
0269-7491
Subject:
average daily intake; breast feeding; breast milk; dibenzofuran; infants; mothers; persistent organic pollutants; polychlorinated biphenyls; polychlorinated dibenzodioxins; polychlorinated dibenzofurans; China
Abstract:
... To monitor the body burden of persistent organic pollutants in mothers and infants living in proximity to a 10-year-old municipal waste incinerator (MWI), levels of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) in the breast milk of mothers were evaluated, and the estimated daily intake (EDI) level of these pollutants in infants was assessed. In ...
DOI:
10.1016/j.envpol.2019.04.069