The South Yellow Sea Basin is a large sedimentary basin superimposed by the Mesozoic-Paleozoic marine sedimentary basin and the Mesozoic-Cenozoic terrestrial sedimentary basin, where no oil and gas fields have been di...The South Yellow Sea Basin is a large sedimentary basin superimposed by the Mesozoic-Paleozoic marine sedimentary basin and the Mesozoic-Cenozoic terrestrial sedimentary basin, where no oil and gas fields have been discovered after exploration for 58 years. After the failure of oil and gas exploration in terrestrial basins, the exploration target of the South Yellow Sea Basin turned to the marine Mesozoic- Paleozoic strata. After more than ten years' investigation and research, a lot of achievements have been obtained. The latest exploration obtained effective seismic reflection data of deep marine facies by the application of seismic exploration technology characterized by high coverage, abundant low-frequency components and strong energy source for the deep South Yellow Sea Basin. In addition, some wells drilled the Middle-Upper Paleozoic strata, with obvious oil and gas shows discovered in some horizons. The recent petroleum geological research on the South Yellow Sea Basin shows that the structure zoning of the marine residual basin has been redetermined, the basin structure has been defined, and 3 seismic reflection marker layers are traceable and correlatable in the residual thick Middle-Paleozoic strata below the continental Meso-Cenozoic strata in the South Yellow Sea Basin. Based on these, the seismic sequence of the marine sedimentary strata was established. According to the avaliable oil and gas exploration and research, the marine Mesozoic-Paleozoic oil and gas prospects of the South Yellow Sea were predicted as follows.(1) The South Yellow Sea Basin has the same sedimentary formation and evolution history during the sedimentary period of the Middle-Paleozoic marine basin with the Sichuan Basin.(2) There are 3 regional high-quality source rocks.(3) The carbonate and clastic reservoirs are developed in the Mesozoic- Paleozoic strata.(4) The three source-reservoir-cap assemblages are relatively intact.(5) The Laoshan Uplift is a prospect area for the Lower Paleozoic oil and gas, and the Wunansha Uplift 展开更多
The effects of dietary zinc and L-arginine supplements on the weight gain,feed efficiency,antioxidant capacity and oxidative status of weanling piglets raised under commercial conditions were examined.A total of 288 p...The effects of dietary zinc and L-arginine supplements on the weight gain,feed efficiency,antioxidant capacity and oxidative status of weanling piglets raised under commercial conditions were examined.A total of 288 piglets aged 21 d were fed for 15 d a diet supplemented or not with 2,500 mg/kg of zinc(provided as zinc oxide)and 1% L-arginine HCl.The 4 treatments were distributed in a randomized complete block design with 6 initial body weight categories(12 animals per pen).Access to feed and water was ad libitum.Data were analyzed as a 2 x 2 factorial experiment using the SAS MIXED procedure,with zinc and arginine as the main independent variables.Blood collection day(d 8 and 15,samples were collected from the same 2 piglets in each pen before the morning feeding)was included as a third factor.The zinc supplement increased the average daily gain(ADG)from d 0 to 7.d 8 to 15 and d 0 to 15(0.289 vs.0.217 kg/d).average daily feed intake(ADFR)from d 8 to 15 and d 0 to 15(0.338 vs.0.279 kg/d)and the gain to feed(G:F)ratio from d 0 to 7 and d 0 to 15(0.86 vs.0.77)(P<0.001).Both supplements significantly decreased the malondialdehyde concentration(zinc:4.37 vs.3.91 μmol/L,P= 0.005;arginine:4.38 vs.3.89 μmol/L,P = 0.002).Total antioxidant capacity and reduced glutathione(GSH)increased from d 8 to 15(0.953 vs.1.391 μmol/L,2.22 vs.3.37 μmol/L,P<0.05)regardless of dietary treatment.Total and oxidized GSH concentrations on d 8 were higher in response to the combined supplements(zinc x arginine interaction.P<0.05).Piglets fed either Zn-supplemented diet had a lower haptoglobin serum concentration(509 vs.1.417 mg/L;P<0.001).In conclusion,the zinc supplement improved piglet growth performance(ADG and ADFI)and oxidative status(based on malondialdehyde concentration).The arginine supplement had a limited effect on growth performance and oxidative status under these conditions.展开更多
基金supported by National Geological Survey Project (DD20160512)National Marine Special Project (GZH200800503)Project of National Oil and Gas Resources Strategic Zoning Investigation and Evaluation (XQ-2005-01).
文摘The South Yellow Sea Basin is a large sedimentary basin superimposed by the Mesozoic-Paleozoic marine sedimentary basin and the Mesozoic-Cenozoic terrestrial sedimentary basin, where no oil and gas fields have been discovered after exploration for 58 years. After the failure of oil and gas exploration in terrestrial basins, the exploration target of the South Yellow Sea Basin turned to the marine Mesozoic- Paleozoic strata. After more than ten years' investigation and research, a lot of achievements have been obtained. The latest exploration obtained effective seismic reflection data of deep marine facies by the application of seismic exploration technology characterized by high coverage, abundant low-frequency components and strong energy source for the deep South Yellow Sea Basin. In addition, some wells drilled the Middle-Upper Paleozoic strata, with obvious oil and gas shows discovered in some horizons. The recent petroleum geological research on the South Yellow Sea Basin shows that the structure zoning of the marine residual basin has been redetermined, the basin structure has been defined, and 3 seismic reflection marker layers are traceable and correlatable in the residual thick Middle-Paleozoic strata below the continental Meso-Cenozoic strata in the South Yellow Sea Basin. Based on these, the seismic sequence of the marine sedimentary strata was established. According to the avaliable oil and gas exploration and research, the marine Mesozoic-Paleozoic oil and gas prospects of the South Yellow Sea were predicted as follows.(1) The South Yellow Sea Basin has the same sedimentary formation and evolution history during the sedimentary period of the Middle-Paleozoic marine basin with the Sichuan Basin.(2) There are 3 regional high-quality source rocks.(3) The carbonate and clastic reservoirs are developed in the Mesozoic- Paleozoic strata.(4) The three source-reservoir-cap assemblages are relatively intact.(5) The Laoshan Uplift is a prospect area for the Lower Paleozoic oil and gas, and the Wunansha Uplift
基金a grant from the Natural Sciences and Engineering Research Council of Canada awarded to F.Guaya studentship from La federation des producteurs de porcs du Quebec(FPPQ)awarded to N.Bergeron.
文摘The effects of dietary zinc and L-arginine supplements on the weight gain,feed efficiency,antioxidant capacity and oxidative status of weanling piglets raised under commercial conditions were examined.A total of 288 piglets aged 21 d were fed for 15 d a diet supplemented or not with 2,500 mg/kg of zinc(provided as zinc oxide)and 1% L-arginine HCl.The 4 treatments were distributed in a randomized complete block design with 6 initial body weight categories(12 animals per pen).Access to feed and water was ad libitum.Data were analyzed as a 2 x 2 factorial experiment using the SAS MIXED procedure,with zinc and arginine as the main independent variables.Blood collection day(d 8 and 15,samples were collected from the same 2 piglets in each pen before the morning feeding)was included as a third factor.The zinc supplement increased the average daily gain(ADG)from d 0 to 7.d 8 to 15 and d 0 to 15(0.289 vs.0.217 kg/d).average daily feed intake(ADFR)from d 8 to 15 and d 0 to 15(0.338 vs.0.279 kg/d)and the gain to feed(G:F)ratio from d 0 to 7 and d 0 to 15(0.86 vs.0.77)(P<0.001).Both supplements significantly decreased the malondialdehyde concentration(zinc:4.37 vs.3.91 μmol/L,P= 0.005;arginine:4.38 vs.3.89 μmol/L,P = 0.002).Total antioxidant capacity and reduced glutathione(GSH)increased from d 8 to 15(0.953 vs.1.391 μmol/L,2.22 vs.3.37 μmol/L,P<0.05)regardless of dietary treatment.Total and oxidized GSH concentrations on d 8 were higher in response to the combined supplements(zinc x arginine interaction.P<0.05).Piglets fed either Zn-supplemented diet had a lower haptoglobin serum concentration(509 vs.1.417 mg/L;P<0.001).In conclusion,the zinc supplement improved piglet growth performance(ADG and ADFI)and oxidative status(based on malondialdehyde concentration).The arginine supplement had a limited effect on growth performance and oxidative status under these conditions.