Autor: Li, Dandan - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Effect of the GSTM1 genotype on the biomarkers of exposure to polycyclic aromatic hydrocarbons: Meta-analysis
Autorzy:: Li, Dandan
Wang, Bingling
Feng, Guochang
Xie, Meng
Wang, Lijuan
Gao, Ruqin
Tematy:: polymorphism
micronuclei
meta-analysis
1-hydroxypyrene
DNA adducts
GSTM1; Pokaż więcej
Wydawca:: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Powiązania:: https://bibliotekanauki.pl/articles/2161849.pdf Link otwiera się w nowym oknie
Opis:: The role of glutathione S-transferase Mu 1 (GSTM1) in the biomonitoring of polycyclic aromatic hydrocarbons (PAHs) is not clear. Our purpose has been to evaluate the influence of GSTM1 genotypes on 1-hydroxypyrene (1-OHP), deoxyribonucleic acid (DNA) adducts, and micronucleus frequency in both occupational and non-occupational populations of null and active GSTM1 carriers. We conducted a meta-analysis on 25 articles that met our strict inclusion criteria (11 studies on 1-OHP, 9 on DNA adducts, and 5 on the micronucleus frequency). In the case of occupationally exposed workers, micronucleus frequency was only significantly higher in the null GSTM1 carriers than in the active GSTM1 carriers. In the non-occupationally exposed general population, 1-OHP and micronucleus frequency were significantly higher in the null GSTM1 carriers. The results of Egger’s test and funnel plot analysis indicated no significant publication bias. In conclusion, GSTM1 genotypes may affect the urinary 1-OHP in the non-occupationally exposed general population, and micronucleus frequency in both occupational workers and non-occupational population. Int J Occup Med Environ Health 2017;30(2):177–201
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A new scheme of the environmental classification standards for the bronze cultural relic’s preservation in museums
Autorzy:: Li, Dandan
Zhou, Hao
Xu, Fangyuan
Yan, Ying
Wu, Laiming
Cai, Lankun
Tematy:: QCM
temperature
humidity
indoor exposure
cultural relics
mikrowaga kwarcowa
temperatura
wilgotność
ekspozyja w pomieszczeniach
zabytki kultury; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/28407393.pdf Link otwiera się w nowym oknie
Opis:: The environmental risk classification of the metal relics is usually determined by the corrosion rate of the metal but it is difficult to monitor the deterioration of the metal relics directly. A strong relationship exists between indoor exposure, the air quality classification of atmospheric corrosion, and the actual deterioration of metal relics. The copper-silver hanging plate method requires a long period of environmental exposure and has certain hysteresis, thus reflecting the current environmental quality of the museum in real time poses some difficulties. However, the application of the environmental reactivity monitor (ERMs) based on the piezoelectric effect can solve the above problems. The invented quartz crystal microbalance (QCM) reactivity monitoring device is applied to study the influence of temperature and humidity on the corrosion of the bronze-simulated materials and the relationship between the corrosion depth rate of the bronze-simulated materials and the frequency change of the crystal oscillator. Then, the recommended classification range of temperature and humidity and the airquality classification standards for the preservation environment of the bronze cultural relics in museums are proposed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Synthesis of a novel hydroxamic acid flotation collector and its flotation separation of malachite against quartz
Autorzy:: Sun, Xin
Huang, Lingyun
Wu, Dandan
Hu, Bo
Zhang, Mei
Li, Yaming
Tong, Xiong
Tematy:: flotation
collector
malachite
hydroxamic acid
direct flotation
adsorption; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/2146909.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes a promising chelating collector, phenyl propyl hydroxamic acid (BPHA), to directly float malachite for the separation of malachite against quartz. The flotation performance and mechanism was investigated via microflotation tests, as well as through contact angle, Scanning Electron Microscopeand Energy Dispersive Spectrometer (SEM–EDS), zeta potential, adsorption capacity, Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) analyses. The results of microflotation tests showed that BPHA has a strong ability to collect malachite and a significant selectivity against quartz. The contact angle tests showed that BPHA effectively adsorbed onto the mineral surface and could improve the hydrophobicity of the malachite surface. SEM–EDS and adsorption capacity analyses further indicated that BPHA adsorbed onto the surface of malachite. The FR-IR results suggested that BPHA could react with Cu2+ ions and facilitate strong chemical adsorption onto the surface of malachite. Furthermore, zeta potential and XPS analyses provided clear evidence that BPHA exhibited a stronger affinity for malachite and a weaker interaction with quartz.
Dostawca treści:: Biblioteka Nauki

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