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| 1 | Assessing the health risk of heavy metals in vegetables to the general population in Beijing,China显示文摘A systematic survey of As, Cd, Cr, Cu, Ni, Pb and Zn concentrations in vegetables from 416 samples (involving 100 varieties) in Beijing was carried out for assessing the potential health risk to local inhabitants. The results indicated that the metal concentrations in vegetables ranged from < 0.001 to 0.479 μg/g fresh weight (fw) (As), < 0.001 to 0.101 μg/g fw (Cd), < 0.001 to 1.04 μg/g fw (Cr), 0.024 to 8.25 μg/g fw (Cu), 0.001 to 1.689 μg/g fw (Ni), < 0.001 to 0.655 μg/g fw (Pb) and 0.01 to 25.6 μg/g fw (Zn), with average concentrations of 0.013, 0.010, 0.023, 0.51, 0.053, 0.046 and 2.55 μg/g fw, respectively. The results showed that the concentrations of As, Cr, Cu, Cd, Pb and Ni in vegetables from open-fields were all significantly higher than those grown in greenhouses. In addition, in local-produced vegetables, all HMs except Zn were significantly higher than those in provincial vegetables. The estimated daily intake (EDI) of As, Cd, Cr, Cu, Ni, Pb and Zn from vegetables was 0.080, 0.062, 0.142, 3.14, 0.327, 0.283 and 15.7 μg/(kg body weight (bw)·d) for adults, respectively. Arsenic was the major risk contributor for inhabitants since the target hazard quotient based on the weighted average concentration (THQw) of arsenic amounted to 44.3% of the total THQ (TTHQ) value according to average vegetable consumption. The TTHQ was lower than 1 for all age groups, indicating that it was still safe for the general population of Beijing to consume vegetables. | SONG Bo LEI Mei CHEN Tongbin ZHENG Yuanming XIE Yunfeng LI Xiaoyan GAO Ding | 2009 | Journal of Environmental Sciences2009，21，12： | 45 |
| 2 | Ovary cancer incidence and mortality in China, 2011显示文摘Objective: To evaluate and analyze ovary cancer incidence and mortality in China in 2011 using ovary cancer data from population-based cancer registration in China, and to provide scientific information for its control and prevention.Methods: Invasive cases of ovary cancer were extracted and analyzed from the overall Chinese cancer database in 2011, which were based on data from 177 population-based cancer registries distributing in 28 provinces. The crude, standardized, and truncated incidences and mortalities et al. were calculated and new and deaths cases from ovary cancer throughout China and in different regions in 2011 were estimated using Chinese practical population.Results: The estimates of new ovary cancer cases and deaths were 45,223 and 18,430, respectively, in China in 2011. The crude incidence rate, age-standardized rate by Chinese standard population(ASR-C) and agestandardized rate by world standard population(ASR-W) incidence were 6.89/100,000, 5.35/100,000 and 5.08/100,000, respectively; the crude, ASR-C and ASR-W mortalities were 2.81/100,000, 2.01/100,000 and 1.99/100,000, respectively. The incidence and mortality in urban areas were higher than those in rural areas. The age-specific incidence and mortality increased rapidly from age 35-39 and peaked at age 60-64 or 75-79 years. After age 45 or 55, the age-specific incidence and death rates in urban were much higher than those in rural areas. Conclusions: Compared with GLOBOCAN 2012 data, the ovary cancer incidence in China in 2011 was at middle level, but its mortality was at low level worldwide. | Kuangrong Wei Yuanming Li Rongshou Zheng Siwei Zhang Zhiheng Liang Huishan Cen Wanqing Chen | 2015 | Chinese Journal of Cancer Research2015，27，1： | 14 |
| 3 | Responses of activities, abundances and community structures of soil denitrifiers to short-term mercury stress显示文摘The responses of activities, abundances and community structures of soil denitrifiers to mercury (Hg) stress were investigated through a short-term incubation experiment. Four soil treatments with different concentrations of Hg (CK, Hg25, Hg50, and Hg100, denoted as 0, 25, 50, and 100 mg Hg/kg dry soil, respectively) were incubated for 28 days. Soil denitrification enzyme activity (DEA) was measured at day 3, 7 and 28. The abundances and community structures of two denitrification concerning genes, nirS (cd1-nitrite reductase gene) and nosZ (nitrous oxide reductase gene), were analyzed using real-time PCR and denaturing gradient gel electrophoresis (DGGE). Results showed that soil DEA was significantly stimulated in the treatments of Hg25 and Hg50 compared with others at day 7. Meanwhile, no difference in the abundances of soil nirS and nosZ was found between Hg spiked treatments and CK, except the lower abundance of nirS (P < 0.05) in the Hg added treatments compared with that in the CK at day 28. The community structures of denitrifiers based on nirS gene presented obvious change at day 7 along with the Hg additions, however, no variation was found in all treatments based on the nosZ gene. The results indicated that Hg (Hg25 and Hg50) had a strongly short-term stimulation on soil DEA, and nirS gene is more sensitive than nosZ gene to Hg stress. | Zhifeng Zhou Yuanming Zheng Jupei Shen Limei Zhang Yurong Liu Jizheng He | 2012 | Journal of Environmental Sciences2012，24，3： | 8 |
| 4 | Epidermal growth factor receptor mutation analysis in cytological specimens and responsiveness to gefitinib in advanced non-small cell lung cancer patients显示文摘Background: Epidermal growth factor receptor(EGFR) mutation is the key predictor of EGFR tyrosine kinase inhibitors(TKIs) efficacy in non-small cell lung cancer(NSCLC). We conducted this study to verify the feasibility of EGFR mutation analysis in cytological specimens and investigate the responsiveness to gefitinib treatment in patients carrying EGFR mutations.Methods: A total of 210 cytological specimens were collected for EGFR mutation detection by both direct sequencing and amplification refractory mutation system(ARMS). We analyzed EGFR mutation status by both methods and evaluated the responsiveness to gefitinib treatment in patients harboring EGFR mutations by overall response rate(ORR), disease control rate(DCR) and progression free survival(PFS).Results: Of all patients, EGFR mutation rate was 28.6%(60/210) by direct sequencing and 45.2%(95/210) by ARMS(P<0.001) respectively. Among the EGFR wild type patients tested by direct sequencing, 26.7% of them were positive by ARMS. For the 72 EGFR mutation positive patients treated with gefitinib, the ORR, DCR and median PFS were 69.4%, 90.2% and 9.3 months respectively. The patients whose EGFR mutation status was negative by direct sequencing but positive by ARMS had lower ORR(48.0% vs. 80.9%, P=0.004) and shorter median PFS(7.4 vs. 10.5 months, P=0.009) as compared with that of EGFR mutation positive patients by both detection methods. Conclusions: Our study verified the feasibility of EGFR analysis in cytological specimens in advanced NSCLC. ARMS is more sensitive than direct sequencing in EGFR mutation detection. EGFR Mutation status tested on cytological samples is applicable for predicting the response to gefitinib. Abundance of EGFR mutations might have an influence on TKIs efficacy. | Lin Li Zijin Zhang Zhixin Bie Zheng Wang Ping Zhang Xin Nie Yuanming Li Hui Wang Bin Ai Gang Cheng | 2015 | Chinese Journal of Cancer Research2015，27，3： | 5 |
| 5 | Prediction and Analysis of the Force and Shape Parameters in Variable Gauge Rolling显示文摘Variable gauge rolling is a new process to obtain a plate for which the thickness changes continuously by continuously and dynamically adjusting the roll gap upward and downward in the rolling process.This technology is an efective method for producing lightweight,low-cost,and economical plates.However,variable gauge rolling is an unsteady process,and the changes in the force and deformation parameters are complex.In this research,based on the minimum energy theory of the variational principle and considering the characteristics of the roll movement and workpiece deformation comprehensively,the internal plastic deformation,friction,shear and tension powers,and the minimum result of the total power functional in upward and downward rolling are obtained with the frst integral and then with a variation of adopting the specifc plastic power and strain rate vector inner product.The analytical results of the deformation and force parameters are also established using the variational method.Then the precision of this model is certifed using the measured values in a medium plate hot rolling plant and the experimental data for Tailor Rolled Blank rolling.Good agreement is found.Additionally,the variation rule of bite angle,neutral angle,and location neutral points are shown,and the change mechanism of the friction parameter on the stress state efect coefcient is given in variable gauge rolling.This research proposes a new mathematical model for rolling process control that provides a scientifc basis and technical support for obtaining an accurate section shape in variable gauge rolling production. | Yuanming Liu Zhenhua Wang Tao Wang Jie Sun Xianguang Zheng Dianhua Zhang Qingxue Huang | 2022 | Chinese Journal of Mechanical Engineering2022，35，4： | 4 |
| 6 | Identifying factors that influence soil heavy metals by using categorical regression analysis:A case study in Beijing,China显示文摘Identifying the factors that influence the heavy metal contents of soil could reveal the sources of soil heavy metal pollution.In this study,a categorical regression was used to identify the factors that influence soil heavy metals.First,environmental factors were associated with soil heavy metal data,and then,the degree of influence of different factors on the soil heavy metal contents in Beijing was analyzed using a categorical regression.The results showed that the soil parent material,soil type,land use type,and industrial activity were the main influencing factors,which suggested that these four factors were important sources of soil heavy metals in Beijing.In addition,population density had a certain influence on the soil Pb and Zn contents.The distribution of soil As,Cd,Pb,and Zn was markedly influenced by interactions,such as traffic activity and land use type,industrial activity and population density.The spatial distribution of soil heavy metal hotspots corresponded well with the influencing factors,such as industrial activity,population density,and soil parent material.In this study,the main factors affecting soil heavy metals were identified,and the degree of their influence was ranked.A categorical regression represents a suitable method for identifying the factors that influence soil heavy metal contents and could be used to study the genetic process of regional soil heavy metal pollution. | Jun Yang Jingyun Wang Pengwei Qiao Yuanming Zheng Junxing Yang Tongbin Chen Mei Lei Xiaoming Wan Xiaoyong Zhou | 2020 | Frontiers of Environmental Science & Engineering2020，14，3： | 1 |
| 7 | Progress in the study of algae and mosses in biological soil crusts显示文摘Algae and mosses are not only two of the familiar communities in the process of desert vegetational succession,but also have the highest biomass in biological soil crusts.Meanwhile,being the pioneer plants,algae and mosses are involved in the establishment of biological soil crusts,which have great importance in arid environments and play a major role in desert ecosystems,such as being the indicator of the vegetation type,soil-holding,preventing erosion by water and wind,and sand fixation.This paper reviews the advances in the study of algae and mosses in arid and semi-arid areas.It mainly describes the ecological functions of algae and mosses including their influences on water cycle,circulation of substances,and community succession.In addition,the relationships between algae and mosses are discussed.Finally,some suggestions are proposed for the research orientations of algae and mosses in biological soil crusts.Ecologically,algae and mosses have significant ecological importance in arid areas,especially in those areas where environmental problems are becoming increasingly serious. | Jiancheng ZHAO Yunpu ZHENG Bingchang ZHANG Ying CHEN Yuanming ZHANG | 2009 | Frontiers in Biology2009，4，2： | 1 |
| 8 | Pat-terns of bacterial diversity along a long-term mercury-con-taminated gradient in the paddy soils 显示文摘 | Liu Yurong Wang Jianjunt Zheng Yuanming | 2014 | Microbial Ecol-ogy2014，68，3： | 1 |
| 9 | Mercury in soils of three agricultural experimental stations with long-term fertilization in China显示文摘 | Zheng Yuanming Liu Yurong H u Hongqing | 2008 | Chemosphere2008，72，： | 1 |
| 10 | Assessment of heavy metal pollution in surface soils of urban parks in Beijing, China显示文摘 | Chen Tongbin Zheng Yuanming Lei Mei | 2005 | Chemosphere2005，60，： | 1 |
| 11 | Assessment of heavy metal pollution in surface soils of urban parks in Beijing, China 显示文摘 | Chert Tongbin Zheng Yuanming Lei Mei | 2005 | Chemosphere2005，60，4： | 1 |
| 12 | Abundance and community composition of methanotrophs in a Chinese paddy soil under long-term fertilization practices显示文摘 | ZHENG Yong ZHANG Limei ZHENG Yuanming | 2008 | Journal of Soils and Sediments2008，8，6： | 1 |
| 13 | Color-tunable hypersensitive temperature sensor based on metal organic framework doped with Eu^(3+)and Dy^(3+)via phonon-assisted energy transfer显示文摘In this work,catena-[(μ-benzene-1,3,5-tricarboxylato)-(1,10-phenanthroline)-(N,N-dimethylfo rmamide)-gadolinium(ⅲ)-N,N-dimethylformamide solvate](denoted as Gd-MOF)co-doped with Eu^(3+)and Dy^(3+)was successfully synthesized.The entire X-ray diffraction peaks of the sample match well with the GdMOF phase.A detailed characterization by inductively coupled plasma mass spectrometry(ICP-MS)shows that the actual concentration is basically consistent with the design concentration.The temperature sensing properties of Gd-MOF:Eu^(3+),Dy^(3+)were analyzed by temperature-dependent fluorescence spectra from 213 to 453 K.As temperature rises,the emission color of Gd-MOF:Eu^(3+),Dy^(3+)changes from yellow to red.The relative sensitivity reaches a maximum of 5.87%/K at 383 K in the Gd-MOF:1%Eu^(3+),30%Dy^(3+)sample.The high relative sensitivity of this MOF is due to the phonon-assisted energy transfer from Dy^(3+)to Eu^(3+),which is proved via fluorescence decay curves and fluoresce nce spectra.The major route of this energy transfer is^(4)F_(9/2)(Dy^(3+))→^(5)D_(1)(Eu^(3+)). | Mingze Zhang Lin Lin Zhuohong Feng Zhezhe Wang Yuanming Yang Wenjun Ma Jieyi Cai Pan Lu Siyi Jia Zhiqiang Zheng | 2023 | Journal of Rare Earths2023，41，11： | 1 |
| 14 | Boosted sodium ion storage performance in MnO_(2):Understanding the bond angle-mediated orbital overlap in MnO_(6)units for fast charge transfer显示文摘Symmetric six oxygen-coordinated Mn structural units(MnO6)in MnO2 with small Mn–O orbital overlap hamper electron transfer rates during energy storage.Herein,we report a novel bond angle modulation strategy to manipulate Mn–O orbital overlap in MnO2 through the construction of Mn vacancies(MnO2-VMn),aiming at expediting electron transfer,and thus enhancing energy storage performance.Both experimental and theoretical results disclose that the amplification of Mn–O–Mn bond angles exclusively augments the Mn(dx2-y2)-O(py)orbital overlap and triggers the electron redistribution in MnO2-VMn,inducing an augmented Mn dx2-y2 electron occupation.This heightened presence of active electrons in the Mn dx2-y2 orbital paves the way for accelerating electron transfer and ion transfer in MnO2-VMn.Notably,MnO2-VMn delivers an improved specific capacitance of 425 F g−1 at 1 A g−1 and a superior rate capacity of 265 F g−1 at 20 A g−1.Furthermore,an asymmetric supercapacitor(MnO2-VMn//AC ASC)was fabricated,exhibiting a high energy density of 64.3 Wh kg−1 at a power density of 1000 W kg−1.Furthermore,theoretical insights uncover the profound implications of metal–oxygen–metal bond angle regulation on interatomic orbital overlap modulation.These revelations illuminate pathways for the design of advanced energy storage materials. | Jinrui Wang Zishan Hou Xia Liu Shiyu Wang Shuyun Yao Yebo Yao Dewei Wang Xueying Gao Huiying Zhang Zheng Tang Yuanming Liu Kaiqi Nie Jiangzhou Xie Zhiyu Yang Yi-Ming Yan | 2023 | Journal of Energy Chemistry2023，，12： | 0 |
| 15 | Characterization of glutamatergic VTA neural population responses to aversive and rewarding conditioning in freely-moving mice显示文摘The Ventral Tegmental Area(VTA) is a midbrain structure known to integrate aversive and rewarding stimuli, but little is known about the role of VTA glutamatergic(VGluT2) neurons in these functions.Direct activation of VGluT2 soma evokes rewarding behaviors, while activation of their downstream projections evokes aversive behaviors. To facilitate our understanding of these conflicting properties, we recorded calcium signals from VTAVGluT2+ neurons using fiber photometry in VGluT2-cre mice to investigate how this population was recruited by aversive and rewarding stimulation, both during unconditioned and conditioned protocols. Our results revealed that, as a population, VTAVGluT2+neurons responded similarly to unconditioned-aversive and unconditioned-rewarding stimulation. During aversive and rewarding conditioning, the CS-evoked responses gradually increased across trials whilst the US-evoked response remained stable. Retrieval 24 h after conditioning, during which mice received only CS presentation, resulted in VTAVGluT2+ neurons strongly responding to CS presentation and to the expected-US but only for aversive conditioning. To help understand these differences based on VTAVGluT2+ neuronal networks, the inputs and outputs of VTAVGluT2+ neurons were investigated using Cholera Toxin B(CTB) and rabies virus. Based on our results, we propose that the divergent VTAVGluT2+ neuronal responses to aversion and reward conditioning may be partly due to the existence of VTAVGluT2+ subpopulations that are characterized by their connectivity. | Quentin Montardy Zheng Zhou Zhuogui Lei Xuemei Liu Pengyu Zeng Chen Chen Yuanming Liu Paula Sanz-Leon Kang Huang Liping Wang | 2019 | Science Bulletin2019，64，16： | 0 |
| 16 | Comparison of medium-term results of minimally invasive plating osteosynthesis and open reduction and internal fixation for mid-distal humeral shaft fractures显示文摘To the Editor:There is controversy in the literature on the benefits of open reduction and internal fixation(ORIF)and minimally invasive plating osteosynthesis(MIPO)for mid-distal humeral shaft fractures.[1]ORIF has the advantages of anatomical reduction,strong fixation,and little impact on the function of the elbow and shoulder joints.Nevertheless,it has some disadvantages,including the need for a large incision and more dissection of soft tissues,interrupting blood supply to the fracture site,resulting in difficulties in healing and an increased risk of bone non-union,and a high risk of iatrogenic radial nerve injury.In contrast,treatment of mid-distal humeral shaft fractures by MIPO has the advantages of less dissection of soft tissues,avoidance of exposure of the radial nerve,and a low risk of iatrogenic radial nerve palsy.This study aimed to compare the medium-term safety and effectiveness of MIPO and conventional ORIF in the treatment of mid-distal humeral shaft fractures. | Bo Yin Lianhua Li Zheng Lu Jie Gao Huayong Zeng Yanhong Cai Yuanming He Zhi Liu | 2022 | Chinese Medical Journal2022，135，22： | 0 |
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