Synergistic effect of neutron and gamma irradiation on 10-bit CMOS digital-to-analog converter

Yan, 刘岩 Liu; Shanchao, 杨善潮 Yang; Dongsheng, 林东生 Lin; Qinglin, 崔庆林 Cui; Wei, 陈伟 Chen; Jiancheng, 龚建成 Gong; Guizhen, 王桂珍 Wang; Xiaoyan, 白小燕 Bai; Xiaoqiang, 郭晓强 Guo

doi:10.3788/hplpb20102209.2186

Cited by 10 publications

(4 citation statements)

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“…Moreover, the light intensity and illumination period was suitable for the growth of phytoplankton, which accordingly induced the decrease of nutrient concentration in seawater. In November, the water temperature decreases, which is regarded as one of the factors leading to the decline of primary productivity [51]. Fishery harvest activities and the frequent human activities were also considered as critical reasons for high comprehensive scores and heavy pollution during this period in the cage culture area.…”

Section: Discussionmentioning

confidence: 99%

Evaluation and Analysis of Water Quality of Marine Aquaculture Area

Zhang

et al. 2020

IJERPH

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In the rapid development of marine aquaculture, the water quality of aquatic environments is regarded as a main limiting factor. Therefore, it is necessary to assess the water quality and environmental conditions in marine aquaculture areas and find out the main influencing factors regarding damage to the water quality environment. In the present research, pond aquaculture and cage aquaculture areas were sampled in May, August and November in 2018. Nine water quality indicators were detected, including pH, temperature, salinity, dissolved oxygen, molybdate-reactive phosphorus, chemical oxygen demand, chlorophyll a, inorganic nitrogen and antibiotic resistance genes (ARGs). Principal component analysis (PCA) was used to analyze the water quality conditions, spatial–temporal changes, and the driving factors in pond and cage aquaculture areas. The results showed that three main components were extracted from the pond aquaculture area, which explained 66.82% of the results, the most relevant factors are salinity, dissolved oxygen and ARGs. For the cage aquaculture area, three main components were extracted which can account for 72.99% of the results, the most relevant factors are chlorophyll a, salinity and dissolved oxygen. The comprehensive scores of the principal components indicated that the heaviest polluted months in pond and aquaculture areas were August and November, respectively. The water quality of the pond aquaculture area is mainly limited by the volume of the pond, while aquaculture activities and seasonality are the main factors for cage aquaculture. ARGs in cage culture areas showed more variety and frequency compared with pond culture areas, which indicated that terrestrial input might be one of the sources for ARGs occurrence. The results would be helpful for the relevant authorities to select water quality monitoring parameters in marine aquaculture areas.

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Section: Discussionmentioning

confidence: 99%

Evaluation and Analysis of Water Quality of Marine Aquaculture Area

Zhang

et al. 2020

IJERPH

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“…The BWS was the most significant factor affecting CPUE. The monsoon drove the coastal currents and convective movement of surface water, which promoted the formation of downwelling of eastern Guangdong in December (Liu et al, 2010) and high salinity water was brought to sea bottom by downwelling in winter. In summer, Qiongdong upwelling brought high salinity water to the sea surface and moved to the east coast of Guangdong.…”

Section: Factors Influencing the Cpuementioning

confidence: 99%

Effects of environmental factors on the spatio-temporal patterns of bigeyes (Priacanthus spp.) in the northern South China Sea

Yang¹,

Wang²,

Zeng³

et al. 2021

Indian Journal of Fisheries

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Bigeyes (Priacanthus spp.; Family: Priacanthidae) are among the most significant demersal fishes in northern South China Sea (nSCS). Based on the bottom trawl data of nSCS from 2009 to 2014, this study applied the SARIMA (Seasonal Autoregressive Integrated Moving Average) model and the centre of gravity movement to analyse the spatio-temporal patterns of catch per unit effort (CPUE). Combining with the corresponding environmental factors of each trawling cruise, including bottom water temperature (BWT), bottom water salinity (BWS) and sea surface height (SSH) and their relationships with the CPUE were analysed by generalised linear model (GLM). The results indicated that, the monthly CPUE varied in half a year as a period and the peak in the first half year was obviously lower than the one in the second half year. The annual temporal trend of the centre of gravity movement was similar, which was related to the monthly variation of CPUE. Among the environmental factors, SSH had the greatest impact on CPUE, especially in October, November and December, 2009 and 2012; BWS had a significant impact on CPUE in July, August and September, 2009 and October, November and December, 2012. The spatio-temporal scale of the CPUE was mainly influenced by SSH and BWS under the effect of nSCS currents. This study presents a method for spatio-temporal variation of economic fish CPUE, integrating the centre of gravity movement and the temporal variation of the CPUE with the environmental factors, which is helpful for determining the fishery management unit and closed fishing season in the nSCS.

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“…Particulate organic matters (POM) can influence processes such as transport, transformation, and removal of elements, which subsequently determine biological life processes and primary productivity. Thus, it is an important parameter for evaluating marine productivity [12]. Therefore, we can provide a preliminary view for evaluating the productivity of the sea based on the analysis of physiological parameters and elemental ratios.…”

Section: Introductionmentioning

confidence: 99%

Physiological Changes and Elemental Ratio of Scrippsiella trochoidea and Heterosigma akashiwo in Different Growth Phase

Liu

Noman

et al. 2021

Water

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The elemental ratios in phytoplankton are important for predicting biogeochemical cycles in the ocean. However, understanding how these elements vary among different phytoplankton taxa with physiological changes remains limited. In this paper, we determine the combined physiological–elemental ratio changes of two phytoplankton species, Scrippsiella trochoidea (Dinophyceae) and Heterosigma akashiwo (Raphidophyceae). Our results show that the cell growth period of S. trochoidea (26 days) was significantly shorter than that of H. akashiwo (32 days), with an average cell abundance of 1.21 × 104 cells·mL−1 in S. trochoidea and 1.53 × 105 cells·mL−1 in H. akashiwo. The average biovolume of S. trochoidea (9.71 × 103 μm3) was higher than that of H. akashiwo (0.64 × 103 μm3). The physiological states of the microalgae were assessed based on elemental ratios. The average ratios of particulate organic nitrogen (PON) to chlorophyll-a (Chl-a) and particulate organic carbon (POC) to Chl-a in S. trochoidea (57.32 and 168.16) were higher than those of H. akashiwo (9.46 and 68.86); however, the ratio of POC/PON of the two microalgae was nearly equal (6.33 and 6.17), indicating that POC/Chl-a may be lower when the cell is actively growing. The physiological variation, based on the POC/Chl-a ratio, in different phytoplankton taxa can be used to develop physiological models for phytoplankton, with implications for the marine biogeochemical cycle.

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Synergistic effect of neutron and gamma irradiation on 10-bit CMOS digital-to-analog converter

Cited by 10 publications

References 0 publications

Evaluation and Analysis of Water Quality of Marine Aquaculture Area

Evaluation and Analysis of Water Quality of Marine Aquaculture Area

Effects of environmental factors on the spatio-temporal patterns of bigeyes (Priacanthus spp.) in the northern South China Sea

Physiological Changes and Elemental Ratio of Scrippsiella trochoidea and Heterosigma akashiwo in Different Growth Phase

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