Increased marine production of N2O due to intensifying anoxia on the Indian continental shelf

Eutrophication of surface waters and hypoxia in bottom waters has been increasing in many coastal areas, leading to very large depletions of marine life in the affected regions. These areas of high surface productivity and low bottom-water oxygen concentration are caused by increasing runoff of nutrients from land. Although the local ecological and socio-economic effects have received much attention, the potential contribution of increasing hypoxia to global-change phenomena is unknown. Here we report the intensification of one of the largest low-oxygen zones in the ocean, which develops naturally over the western Indian continental shelf during late summer and autumn. We also report the highest accumulations yet observed of hydrogen sulphide (H2S) and nitrous oxide (N2O) in open coastal waters. Increased N2O production is probably caused by the addition of anthropogenic nitrate and its subsequent denitrification, which is favoured by hypoxic conditions. We suggest that a global expansion of hypoxic zones may lead to an increase in marine production and emission of N2O, which, as a potent greenhouse gas, could contribute significantly to the accumulation of radiatively active trace gases in the atmosphere.     

导弹制导和控制系统

虽然导弹制导和控制系统的出现源自军事目的，但是这项技术已经应用于很多领域，比如机器人、工业过程控制和全球定位系统（GPS，Global Positioning System）。本书详细的阐述了这项技术的最新幕后，战略和战术导弹及其对给定目标的制导、控制和采取的策略。     

Alkaloid studies XXV. The structure of the Aspidosperma alkaloids cylindrocarpine and cylindrocarpidine

Zusammenfassung Die Strukturaufklärung von Cylindrocarpin (II) und Cylindrocarpidin (IV) zeigt, dass diese zwei Alkaloide die ersten Mitglieder der Aspidosperminfamilie (I) sind, in denen eine sauerstoffhaltige Seitenkette anstatt der gewöhnlichen C-5-Äthylgruppe vorliegt.

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Paper XXIV,T. Nakano, C. Djerassi, R. A. Corral, andO. O. Orazi, J. org. Chem., in press.

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Postdoctorate research fellow, 1958–1960.     

Comparison of the effects of atropine sulfate and procaine hydrochloride on nerve conduction

Zusammenfassung Die lokalanästhetische Wirksamkeit des Atropinsulfats wurde mit der des Novokains mittels Messung der Kinetik des Nervenimpulsblocks am isolierten Nervus ischiadicus des Frosches verglichen. Die relative Wirksamkeit des Atropinsulfats ist weniger als 120.     

Methods for determining ploidy in amphibians: Nucleolar number and erythrocyte size

Summary Diploid and triploidXenopus can be easily and reliably distinguished by the size of their erythrocytes. This method has several advantages over other methods, such as counting metaphase chromosomes and counting nucleoli. One problem with the latter method is the reduction in cells with a full complement of nucleoli when regenerating tissue is used.Research supported by NIH grant EY 01662.     

Respiratory control in liver mitochondria of rats hosting the walker 256 carcinoma tumor.

The decrease in the respiratory control ratio of mitochondria is a first order process when these organelles are incubated in isotonic sucrose. Furthermore, the initial respiratory control ratios and the rates of loss in respiratory control in liver mitochondria from rats hosting the Walker 256 carcinoma are not significantly different form the same properties of mitochondria from untreated animals.     

考虑广告和产品结构的供应商管理库存系统的Nash博弈

假设文献[1]中的各个企业之间除了在库存管理方面进行合作外,还没有意识到在市场广告和供应链生产方面的合作,企业处于分别决策状态,每一个企业最大化其自身的利润。在给出考虑广告和产品结构的供应商管理库存系统的Nash非合作博弈模型,分析博弈结果和一些性质。最后给出一个算例说明本文的理论。