排序方式: 共有8条查询结果,搜索用时 15 毫秒
1
1.
Roland Axt-Fliedner Andrii Kurkevych Maciej Slodki Maria Respondek-Liberska Katarzyna Zych-Krekora Rüdiger Stressig Jochen Ritgen Guiseppe Rizzo Martin Krapp Luc de Catte Gunther Mielke Stephan Bosselmann Mathias Meyer-Wittkopf Andreea Kawecki Aline Wolter Marios Mamalis Christian Enzensberger 《黑龙江环境通报》2017,37(8):812-819
2.
3.
4.
Jinxin He Jianjun Hu Diraviyam Thirumalai Ruediger Schade Enqi Du 《Journal of environmental science and health. Part. B》2016,51(1):8-13
Gentamicin (Gent) is an aminoglycoside antibiotic being used in livestock sector. Gent residues could cause some genetic disorders by nonsense mutations. This study aimed to develop IgY-based ELISA for the detection of Gent in animal products. Gent was conjugated with Bovine serum albumin (BSA) by carbodiimide method for further immunization in the laying chickens. PEG-6000 extraction method was employed to extract IgY from the egg yolk. The titer of anti-Gent-IgY attained the peak of 1:256,000 after the 5th booster immunization. Checkerboard titration confirmed that, anti-Gent IgY in 1:2,000 dilution could give an Optical Density (OD) 1.0 at 2 µg mL?1 of Gent-OVA coating concentration. IgY-based indirect competitive ELISA (Ic-ELISA) showed that, the IC50 value of anti-Gent IgY was 2.69 ng mL?1 and regression curve equation was y = ?16.27x + 56.97 (R2 = 0.95, n = 3), confirming that, the detection limit (LOD, IC10 value) was 0.01 ng mL?1. Recoveries from fresh milk, pork and chicken samples were ranged from 69.82% to 94.32%, with relative standard deviation lower than 10.88%. Our results suggested that generated anti-Gent IgY antibodies can be used in routine screening analysis of Gent residues in food samples. 相似文献
5.
6.
7.
8.
Simulating the effects of urbanization,afforestation and cropland abandonment on a regional carbon balance: a case study for Central Germany 总被引:1,自引:0,他引:1
The newly developed model system HILLS is used to simulate recent (1990–2000) and future (up to 2020) changes in land use
and carbon sequestration over Central Germany. HILLS is unique as that it integrates the spatially explicit land-use-change
model LUC-Hesse with the dynamic ecosystem model Century under a GIS platform. With this new tool, the concurrent effects
of urbanization, afforestation and cropland abandonment on regional carbon sequestration are analyzed for an exemplary “Business
as Usual” scenario. During the simulation period, afforestation was estimated to sequester 880 Gg C and cropland abandonment
783 Gg C. Urbanization was estimated to release 336 Gg C formerly stored in soil organic matter and thereby offsets about
20% of the C sequestered by cropland abandonment and afforestation. The case study shows that urbanization can partly counteract
the benefits of carbon sequestration resulting from other land-use changes and should be investigated in other carbon balances. 相似文献
1