目前所有被知道的原子是Z=1到Z=107的的原子,有107种化学元素。每一种化学元素被给以一一个名字和一一个独特的符号。对于大多数元素符号都仅仅是英文名称缩写为-一个或两个字母,例如: oxygen==O nitrogen == N neon==Ne magnesium == Mg氧=O氮=N氖=Ne镁=Mg ...
aEffects of the North Atlantic Oscillation on water temperature in southern Baltic coastal lakes 北大西洋动摆的作用在水温在南部的波儿地克的沿海湖 [translate] aBiological nitrogen removal at low water temperatures - long term experience 生物氮气撤除在最低水位温度-长的期限经验 [translate] ...
The behavior of oxygen and nitrogen as components of air led to the advancement of the phlogiston theory of combustion, which captured the minds of chemists for a century. Oxygen was prepared by several workers, including Bayen and Borch, but they did not know how to collect it, did not ...
Another possibility is the exsolution of most of the present-day atmospheric nitrogen inventory at the end of the magma ocean phase (Gaillard et al. 2022a), for oxygen fugacities above IW-3, which would imply limited later volcanic outgassing over Venus’ evolution. For reference, the current...
Briefly, chloroform was removed by evaporation under nitrogen and total lipids dissolved in 5 ml of ethanol. Triglycerides in 40 μl aliquots of the ethanol suspension were measured by adding 0.25 ml triglyceride reagent (ThemoElectron Triglyceride Kit cat. no. TR22421), incubating for ...
Unless otherwise indicated, it is possible that optionally substituted groups are substituted with as many optional substituents as can be accommodated by replacing a hydrogen atom with a non-hydrogen substituent on any available carbon or nitrogen or oxygen atom. Commonly, it is possible for the ...
This pre-treatment with GABA was undertaken in culture maintenance media (see ‘Methods’), rather than ACSF or similar saline solution, in order to avoid the activation of autophagic signalling pathways by nitrogen starvation, which could affect the function of inhibitory synapses38,39. Furthermore...
Urine samples (24-h) were collected the day before each IAAO study for measurement of histidine, β-alanine, 3-methylhistidine (3-MH), creatinine, urea nitrogen and total urinary nitrogen excretion. Albumin, transferrin, complete blood count (CBC), ferritin and plasma amino acids were measured...
In the future, the tested preparations could be enriched with other nutrients, such as nitrogen (N), and preferably applied in granular form in spring. For the time being, however, the loose form was used, as it was assumed that fertilization would take place before planting the seedlings ...