搜索结果: 1-13 共查到“知识库 海洋科学 pH”相关记录13条 . 查询时间(0.195 秒)
Are Ph.D. Students Able to Explore Career Paths That Their Advisors Disparage?
Career Paths Advisors Disparage
2015/7/31
This essay is written for a particular group of Ph.D. students in oceanography, not the majority who are in the Ph.D. program to learn how to be researchers in research universities and research insti...
In 1896, Arrhenius provided the first roughly quantitative sense of the plausible magnitude of human-induced changes in the concentration of CO2 in the atmosphere. Since then, all chemists could be aw...
The effect of pH on the uptake of zinc and cadmium in marine phytoplankton: Possible role of weak complexes
The effect of pH on the uptake zinc cadmium marine phytoplankton Possible role of weak complexes
2014/4/2
In natural samples from the New Jersey coast and the Gulf of Alaska, zinc (Zn) and cadmium (Cd) uptake rates by phytoplankton decreased on average about 30%as pH was decreased from 8.5 to 7.9 or 7.7, ...
螺旋藻培养中碳源和PH值的调控方法
培养 pH值 碳源 螺旋藻
2008/10/14
该发明公开了一种螺旋藻培养中碳源和pH值的调控方法。其特征是：测得螺旋藻培养的pH值达到10.3，向培养液中添加NaHCO_3或CO_2，将pH值降低。在培养过程中，反复操作，将pH值控制在10.0-10.3。同时实现对碳源和pH值的调控，以NaHCO_3为碳源，将NaHCO_3用水溶解，形成溶液，再将NaHCO_3溶液加入培养液；以CO_2为碳源，将塑料微孔管置于培养池底部，利用置于培养池底部的...
Cyanobacterial surface blooms formed byAphanizomenonsp. andNodularia spumigena in the Baltic Sea: Small-scale fluxes, pH, and oxygen microenvironments
Cyano bacterial surface blooms med Aphanizomenonsp Nodularia spumigena the Baltic Sea Small-scale fluxes pH oxygen microenvironments
2014/4/21
Summer blooms of filamentous cyanobacteria, mainlyAphanizomenonsp. and Nodularia spumigena, are characteristic for the Baltic Sea, where they accumulate at the sea surface in calm weather. The chemica...
Dissolution of biogenic silica from land to ocean: Role of salinity and pH
Dissolution of biogenic silica land to ocean salinity pH
2014/4/18
The dissolution rates of diatom frustules, phytoliths, two diatomaceouslake sediments, a siliceous ooze from the Southern Ocean, a diatomite deposit, and a synthetic amorphous silica were measured in ...
天山乌鲁木齐河源1号冰川雪坑中pH值和电导率的季节变化及淋溶过程
2007/12/12
Abstract10 μm）微粒的浓度峰值提前40天左右；在有的雪坑中，pH值和电导率的峰值出现在污化层附近，与污化层的位置有较好的一致性，说明污化层对可溶性离子的淋溶作用可能有一定的影响。相关分析表明，Ca2+是影响表层雪中pH值和电导率变化的最主要离子。
Effect of pH on growth, cell volume, and production of freshwater ciliates, and implications for their distribution
pH on growth cell volume production freshwater ciliates
2014/5/4
We investigated the effect of pH on growth, cell volume, and production of the freshwater ciliates Urotricha farcta, U. furcata, and U. castalia in laboratory cultures with Cryptomonas sp. as food. Ov...
Release of trace oxyanions from littoral sediments and suspended particles induced by pH increase in the epilimnion of lakes
trace oxyanions littoral sediments suspended particles induced pH increase epilimnion of lakes
2014/5/9
We measured the vertical distributions of dissolved vanadium (V), molybdenum (Mo), and tungsten (W) during a stratification period in Lakes Biwa, Ikeda, and Unagi-ike, which are located in the tempera...
Effect of pH on measurement of strong copper binding ligands in lakes
lakes strong copper binding
2014/5/14
We investigated the effect of pH on Cu
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binding by natural organic ligands in two New Zealand lakes on the
South Island, New Zealand, using competitive ligand equilibration with salicylaldoxime a...
Benthic photosynthesis in an acidic mining lake (pH 2.6)
Benthic photosynthesis acidic mining lake
2014/5/27
Natural neutralization of acidic mining lakes is usually limited by the availability of organic carbon. We investigated whether benthic photosynthesis could contribute to primary production in an acid...
A pH plate fluorosensor (optode) for early diagenetic studies of marine sediments
A pH plate fluorosensor early diagenetic marine sediments
2014/5/26
Pore water pH distributions are closely coupled to early diagenetic reactions and transport processes in surficial sediments. In this study, an optical plate fluorosensor for rapid two-dimensional det...