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充氧

充氧的相关文献在1960年到2023年内共计1422篇,主要集中在水产、渔业、临床医学、轻工业、手工业 等领域,其中期刊论文258篇、会议论文2篇、专利文献142655篇;相关期刊156种,包括黑龙江医学、山东医药、淡水渔业等; 相关会议2种,包括2004年全国城镇饮用水安全保障技术研讨会、1998年全国半导体硅材料学术会议等;充氧的相关文献由2784位作者贡献,包括孙凤枝、张伟伟、施央君等。

充氧—发文量

期刊论文>

论文:258 占比:0.18%

会议论文>

论文:2 占比:0.00%

专利文献>

论文:142655 占比:99.82%

总计:142915篇

充氧—发文趋势图

充氧

-研究学者

  • 孙凤枝
  • 张伟伟
  • 施央君
  • 罗建文
  • 孙昕
  • 朱先德
  • 不公告发明人
  • 冯军
  • 朱陈伟
  • 杨阳
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 杨青; 蔡少彬; 陈明; 郑文娜
    • 摘要: 本论文研究和开发了一种麦汁充氧新装置和新工艺,该充氧装置对充氧用压缩空气(PA)分压和麦汁管道压力实现稳压控制,工艺上每批麦汁采用恒定充氧流速连续充氧,可保证单位体积麦汁充氧量一致从而实现麦汁稳定精准充氧。该充氧工艺对于大生产中不同生产能力的糖化线和不同容量的发酵罐而言,更加便于控制和实现灵活的生产安排;且该充氧工艺可实现对啤酒风味物质的调控,啤酒高级醇含量降低15%以上,乙醛含量降低7.5%,酒液的饮用舒适度明显改善,风味稳定性提高。
    • 秦旭; 涂宗财; 王辉; 张露; 沙小梅; 张南海
    • 摘要: 首先测定彭泽鲫的休眠温度和冻结温度,再运用生态冰温学原理,确定其生态冰温范围为0~7°C.通过单因素与正交试验,确定彭泽鲫夏季保活的最佳技术条件为:暂养24 h,降温休眠,鱼水质量比1:1,NaC1添加0.3%,(13±1)°C下纯氧保活.在最佳条件下进行验证实验,得出彭泽鲫的保活时间为148 h.该保活技术可以有效延长彭泽鲫的夏季保活时间,减少用水量,降低污染.
    • 王海明
    • 摘要: 啤酒中的乙醛是酵母在麦汁发酵过程中正常的代谢产物,在含量超过一定的数值后就会影响到啤酒的风味。本文简述了乙醛的形成机理以及影响其含量的因素,通过大量的历史数据,总结分析了麦汁充氧量和发酵液乙醛含量之间的关系,发现麦汁充氧量过低或过高对降低发酵液乙醛含量均不利。
    • 宋长太
    • 摘要: 每年的5月中旬至6月上旬,盐都区蟹塘边都会呈现一片忙碌景象,河蟹养殖户要从运销商的活水车上购买鳜鱼种,经过数、装入氧气袋中充氧后运到各自的蟹塘放养,这是该地区河蟹养殖每年必须要做的一道程序。
    • 杨耀帅; 梅秀芹; 李取生; 魏佳; 周雪芳; 陈柯罕; 周婷
    • 摘要: [目的]研究缺氧和充氧栽培对水稻重金属Cd的吸收和转运及OsHMA2基因在茎中表达的影响,为降低水稻中重金属的吸收和累积奠定基础.[方法]以水稻品种五丰优2168为试验材料,通过营养液缺氧和营养液充氧的水培盆栽试验,分析Cd质量浓度为0、0.6、1.2 mg·L-1时,Cd的吸收累积以及茎中OsHMA2基因表达水平.[结果]缺氧栽培条件下,水稻生长发育受Cd抑制作用不显著,而充氧栽培条件下水稻生长受到显著抑制,表现为根、地上部干质量显著下降.在0.6和1.2 mg·L-1Cd处理条件下,缺氧栽培的水稻根部和地上部Cd累积量均低于充氧栽培.2种栽培条件下,根部Cd累积量均随Cd处理浓度的增大而增大.水稻地上部对Cd的累积在缺氧栽培条件下,0.6和1.2 mg·L-1Cd处理无显著差异,充氧栽培的水稻地上部Cd累积随处理浓度增大而增大.与对照相比,水稻茎OsHMA2表达量在缺氧和充氧栽培下,0.6 mg·L-1Cd处理上调,而1.2 mg·L-1Cd处理下调;在Cd处理下,OsHMA2表达量缺氧栽培高于充氧栽培.[结论]缺氧栽培能抑制水稻对Cd的吸收和累积;Cd累积量达到一定值时能够下调OsHMA2的表达.%[Objective] To study the effects of anoxic and aerobic cultivation conditions on cadmium (Cd) uptake and transfer and OsHMA2 expression in rice shoots,and provide a theoretical basis for reducing the uptake and accumulation of heavy metals in rice.[Method] Using rice cultivar ‘Wufengyou 2168',pot experiments were performed hydroponically under anoxic(nutrient solution with agar) and aerobic(oxygenized nutrient solution) conditions.Cd uptake and accumulation,and OsHMA2 expression levels in rice shoots were analyzed at three Cd levels(0,0.6,1.2 mg.L-1).[Result] Rice growth was not significantly inhibited by Cd under anoxic condition,but was significantly inhibited under aerobic condition with the dry weight of roots and above ground parts significantly decreased.At the Cd concentration of 0.6 and 1.2 mg·L-1,Cd accumulations in roots and above ground parts of rice under anoxic condition were lower than those under aerobic condition.Under both anoxic and aerobic conditions,Cd accumulation in roots increased with Cd concentration.For above ground parts of rice,Cd accumulation was not significantly different between 0.6 and 1.2 mg·L-1 Cd levels under anoxic condition,but increased with Cd concentration under aerobic condition.Compared with the control (0 mg·L-1 Cd),OsHMA2 expression level increased at the Cd concentration of 0.6 mg·L-1 but decreased at 1.2 mg·L-1 in shoots under both anoxic and aerobic condition,and OsHMA2 expression level in rice was higher under anoxic condition than those aerobic condition at each Cd level.[Conclusion] Anoxic culture can inhibit Cd uptake and accumulation in rice,and OsHMA2 expression decreases when Cd accumulation reaches a certain value.
    • 杨彦锋; 黄廷林; 章武首; 郭英明; 文刚; 朱来胜
    • 摘要: The concentration of DO is a critical factor for the iron-manganese co-oxide oxide film coating on the quartz sands to remove the high concentration of ammonium from groundwater,and oxygenating at the bottom and the one third of the bottom in a pilot-scale filter was used to ensure the sufficient dissolved oxygen.Results showed that removal capacity of ammonium was increased obviously after oxygenating compared with non-oxygenating(1.5mg/L).When the positions of oxygenating were at the bottom and the one third of the bottom,the maximum removal concentrations of ammonium were 3.7 and 4.3mg/L,respectively,and the filtering velocity was 8m/h.It indicated that the catalytic activity of the co-oxide film was greatly improved,and the removal efficiency of ammonium was highly enhanced by increasing the dissolved oxygen.Besides,the characterizations of SEM and EDS for the oxide film showed that the morphologies and elements were rarely changed before and after oxygenating.%溶解氧浓度是影响石英砂表面铁锰复合氧化膜催化氧化去除地下水中高浓度氨氮的关键因素.在中试实验条件下,采用在滤层底部和底部1/3处充氧的方式以满足氧化高浓度氨氮所需的溶解氧浓度.结果表明:充氧后,活性氧化膜对氨氮的去除效果较充氧前的1.5mg/L明显提高.当滤速为8m/h,底部和底部1/3处充氧时,氨氮的最大去除浓度分别提高至3.7,4.3mg/L.由此可知提高溶解氧浓度能充分地发挥活性氧化膜的催化活性,大幅度地提高对氨氮的去除效果.此外,用SEM和EDS对充氧前后氧化膜进行微观表征,发现氧化膜并未发生明显变化.
    • 魏南; 余德光; 王广军; 谢骏
    • 摘要: 为研究底部充氧对养殖系统上覆水—泥水界面—沉积物间隙水中离子垂直分布的影响,在室内条件下构建模拟装置,设充氧组(实验组)和未充氧组(对照组),每组4个平行,利用Peeper技术分别采集各装置中第0、1、4和7天,上覆水—泥水界面—沉积物间隙水整个垂直剖面的原位水样,然后应用微量分光光度法测定样品中的NH4+-N、NO3--N、NO2--N、PO43--P和SO42--S浓度.结果显示:(1)短期充氧对NH4+-N在上覆水和沉积物间隙水中的垂直分布特征影响不显著;(2)充氧可使沉积物上覆水和表层沉积物(0~2 cm)间隙水中的NO3--N浓度大幅升高;(3)硝化作用的中间产物NO2--N,由于不能和氧气大量共存,其平均浓度的最大值由未充氧前出现在上层上覆水,逐渐转变为在表层沉积物1 cm深处;(4)充氧促进了沉积物对PO43--P的吸附和固定,显著降低了其在上覆水和表层沉积物(0~2 cm)间隙水中的浓度;(5)充氧通过化学和生物途径氧化了系统中还原性含硫物质,大幅升高了上覆水和表层沉积物(0~2 cm)间隙水中的SO42--S的浓度;(6)主成份分析(PCA)表明,持续充氧1、4和7 d显著改变了上覆水的理化性质,其中第4天和第7天的数据与对照组差异最大,相对于上覆水,充氧对沉积物间隙水的总体影响不显著.研究表明,底部充氧可降低引起池塘富营养化PO43--P的浓度,提高了氧化性离子NO3--N、NO2--N和SO42--S的浓度,显著改变了上覆水和表层沉积物间隙水的理化性质,是养殖池塘水质调控和环境修复的一种有效方法.%In order to study the effect of aeration on vertical distribution of the ions in overlying and interstitial waters in aquaculture systems, we constructed 8 plexiglass microcosms paved with aquaculture sediment, including 4 tests with continuous aeration and 4 controls without aeration. Intact overlying and interstitial waters were collected by Peeper (pore water equilibriums) devices on the days of 0, 1, 4 and 7 respectively, before and after initiating the aeration. The ions of NH4+-N, NO3--N, NO2--N, PO43--P and SO42--S were measured by miniaturized photometrical methods using a microplate reader. The result showed that one week aeration didn't significantly change the vertical distribution of NH4+-N in interstitial and overlying waters, but it greatly increased the concentration of NO3--N in overlying and 0–2 cm interstitial waters. The highest average concentration of NO2--N presented in surface layer waters before the aeration, while it peaked in the surface sediment interstitial waters at the depth of 1 cm during the aeration. The aeration promoted the adsorption and immobilization of PO43--P in the sediment, greatly decreased the concentration of PO43--P in overlying and 0–2 cm interstitial waters. The concentration of SO42--S in overlying and 0–2 cm interstitial waters was significantly increased by oxidizing reducible sulfur in biological and chemical path. The physicochemical property of the overlying water on 1 d, 4 d, 7 d was greatly changed, which distanced farthest away from the control group, suited at the bottom of the PCA image. On the contrary, it didn't distinctively chang the property of the sediment interstitial waters, which suited at the left site of the PCA image. In conclusion, aeration conditions can elevate oxidative ions of NO3--N, NO2--N and SO42--S, and reduce the ions of PO43--P which can cause eutrophication. It greatly changes the physicochemical property of the overlying water and surface sediment interstitial waters, which is an applicable method to control aquaculture pond water quality and remediate sediment.
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