搜索结果: 1-15 共查到“知识库 pCO2”相关记录26条 . 查询时间(0.049 秒)
三峡库区不同城镇化梯度下河流pCO2动态及驱动因素
城镇化梯度 三峡库区 二氧化碳分压 环境因子
2020/9/24
为研究河流溶解性CO2（二氧化碳）对城镇化的响应，于2018年8月对三峡库区3条具有不同城镇化强度的河流——汝溪河、南河和桃花溪进行野外在线监测及取样分析，测定了样品有机质（溶解性有机碳DOC）、营养元素（溶解性总氮DTN、溶解性总磷DTP）；利用ArcGIS解译各流域的土地利用组成，并利用碳酸盐平衡方程，通过pH、Alk （碱度）、水温计算不同城镇化梯度河流的pCO2（CO2分压）.结果表明：建...
Seasonal dynamics of autotrophic and heterotrophic plankton metabolism and PCO2 in a subarctic Greenland fjord
Biological metabolic kinetics Greenland fjord
2014/10/16
We measured net planktonic community production (NCP), community respiration (CR), and gross primary
production (GPP) in September, February, and May in a subarctic Greenland fjord influenced by glac...
小浪底水库影响下的黄河花园口站和小浪底站pCO2特征及扩散通量
黄河 二氧化碳分压 水-气CO2扩散通量 调水调沙 小浪底水库
2016/12/20
于2011年11月至2012年10月在黄河小浪底站和花园口站进行连续采样分析,根据亨利定律计算出表层水体二氧化碳分压(pCO2),研究了在小浪底水库"水沙调控"的影响下黄河花园口站和小浪底站表层水体pCO2特征及水-气CO2通量. 结果表明,在小浪底水库正常调度期间,小浪底站表层水体ｐCO2在82~195 Pa之间,花园口站表层水体ｐCO2在99~228 Pa之间,且花园口站表层水体ｐCO2均高于...
A laboratory experiment was designed to investigate the effects of ocean acidification (three levels) in the
presence or absence of the clay mineral illite (five concentrations) on the coagulation of...
根据2011年4、8、10月和2012年1月在桑沟湾获得的表层海水总碱度（TA）和pH值，结合现场水文、化学、生物和养殖等参数，探讨了桑沟湾海域CO2体系各参数的空间分布特征、季节变化情况及其影响因素。调查结果显示，10月和翌年1月，CO2体系各参数主要受温度和盐度的影响；8月，pH和pCO2分别与初级生产力和溶解氧显著相关；4月与水文、化学生物因子无显著相关性。8月各参数的空间差异最大，其次是1...
Impact of seawater pCO2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida
seawater pCO2 calcification and Mg/Ca and Sr/Ca ratios benthic foraminifera calcite culturing experiments Ammonia tepida
2010/1/21
Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic a...
Coupling of surface pCO2 and dissolved oxygen in the northern South China Sea:impacts of contrasting coastal processes
surface pCO2 dissolved oxygen South China Sea coastal processes
2010/1/21
We examined the relationship between CO2 partial pressure (pCO2) and dissolved oxygen (DO) based on a cruise conducted in July 2004 to the northern South China Sea (111°–118° E 18°–23° N), spanning fr...
Effects of increased pCO2 and temperature on trace element (Ag,Cd and Zn) bioaccumulation in the eggs of the common cuttlefish,Sepia officinalis
pCO2 temperature trace element bioaccumulation common cuttlefish
2010/1/21
Cephalopods play a key role in many marine trophic networks and constitute alternative fisheries resources, especially given the ongoing decline in finfish stocks. Along the European coast, the eggs o...
Functional responses of diaphragm muscle in the rat to varying PCO2 levels and helium content in hyperbaric atmospheres
diaphragm carbon dioxide helium hyperbaric animal rat
2009/7/20
Functional responses of diaphragm muscle in the rat to varying PCO2 levels and helium content in hyperbaric atmospheres.
Changes in rat respiratory behavior under varying PCO2 levels and argon content in hyperbaric Ar-O2-CO2 atmospheres
respiratory carbon dioxide argon animal rat
2009/7/20
An anesthetized rat preparation has been used for breathing studies in hyperbaric Ar-O2-CO2 atmospheres in which total saturation pressure was varied in the range 1-19.1 ATA and PCO2 was set at levels...
Alveolar Pco2 during rest and exercise in divers and non-divers breathing O2 at 1 ATA
human divers CO2 hypercapnia
2009/7/17
The extent of hypercapnia in oxygen-breathing subjects was investigated during rest and exercise (650 kpm/min). Divers, ex-divers, and non-divers were studied. Carbon dioxide retention was judged by e...
Effects of the pH/pCO2 control method on medium chemistry and phytoplankton growth
Effects pH/pCO2 control method medium chemistry phytoplankton growth
2010/1/20
The control of key chemical parameters in phytoplankton cultures, such as pCO2, pH and Ω (the saturation state of calcium carbonate), is made difficult by the interdependence of these parameters and b...
Independence of hypoxic death of inspiratory PCO2 in rats and fossorial mole rats
cardiac output rat animal oxygen consumption Carbon Dioxide Respiration
2009/7/15
Laboratory white rats and fossorial mole rats (Spalax ehrenbergi) were subjected to progressive hypoxia by enclosure in a thermoregulated, confined atmosphere. Variable levels of environmental CO2 wer...
Transcutaneous measurement of PCO2 at high ambient pressure (41 bar)
transcutaneous oxygen CO2 carbon dioxide animal rat hyperbaric
2009/7/10
The accuracy of transcutaneous CO2 monitoring with the Kontron CO2 sensor was studied during compression to 41 bar and subsequent decompression. The PCO2 was stable and accurate during the test of the...
白令海盆pCO2分布特征及其对北极碳汇的影响
pCOCO2北极碳汇 水团运移 白令海 楚克奇海
2009/5/19
利用中国首次北极科学考察期间所观测到的白令海及楚克奇海表层海水CO2分压(pCO2)的变化及其异常, 研究了白令海盆pCO2的分布特征及与周围水文环流的相关关系. 结果表明, 与具有高生产力的白令海陆架区不同, 在白令海盆观测区内, 叶绿素整体水平较低, 生物作用不是pCO2空间分布的主要调控因子, 而水文环流要素呈现出重要影响, 是典型的高营养盐低叶绿素(HNLC)海区. 研究表明, 白令陆坡流...