用ICP-AES技术测定废水中重金属元素含量

我国对排放废水中重金属含量实行严格控制，为了做到安全、准确、快速、有效地实施节能减排，文章研究了将工业废水加硝酸消解后，用电感耦合等离子体发射光谱仪对水中Cd、Ni、Cu、Zn、Cr、Pb元素含量进行测定的分析技术。该方法具有检出限低、准确度及精密度高、分析速度快、线性范围宽等优点。     

Renal function changes and NHS resource use in breast cancer patients with metastatic bone disease treated with IV zoledronic acid or oral ibandronic acid: a four-centre non-interventional study

Abstract

Aims: To describe renal function monitoring practice in patients with metastatic bone disease (MBD) treated with IV zoledronic acid (ZA) and oral ibandronic acid (IA), the management pathways and NHS hospital resources used.

Methods: Medical records of 189 patients; IA (91), ZA (98) with primary breast cancer and MBD were reviewed, and data collected on renal monitoring and hospital visits during bisphosphonate therapy. Time and motion review of resources to administer the bisphosphonates was also conducted.

Results: Only 30% of patients given ZA and no patient given IA had baseline creatinine clearance (CrCl) recorded. Calculated baseline CrCl suggested impaired renal function in 33% ZA and 29% IA patients. Dose reductions were not made correctly in 29 ZA and 2 IA patients whose monitoring suggested it. ZA patients made more clinic and day care attendances than IA-treated patients, at twice the cost. Staff activity and patient time per visit was higher with ZA than IA.

Conclusion: Although limited by retrospective design, these results demonstrate that in many patients, CrCl is not calculated before or during treatment with bisphosphonates. Renal function deteriorated in many patients during therapy. In view of these effects, practice should be reviewed to ensure appropriate dosing.     

高硫高酸原油加工过程对设备腐蚀现象的研究

高硫高酸原油在加工过程中会对生产设备造成腐蚀，而且出现的腐蚀种类多样。只有认识和掌握腐蚀产生的条件和机理才能避免或减少腐蚀的产生。文章详细介绍了氯化物腐蚀、硫化物腐蚀、环烷酸腐蚀产生的条件和机理。     

新疆地区特色植物油脂的营养分析和发展前景

新疆特产多,特色油料资源丰富,各种特色油脂不饱和脂肪酸成分含量高,并含有维生素、人体必需氨基酸等营养成分,各种油脂的搭配食用,将有利于人体健康。目前,新疆油脂市场品种少,应抓住跨越式发展机遇,加快发展力度,利用新疆本地资源,为广大消费者提供更具营养价值的新疆特色油脂。     

An Iterative Process for International Negotiations on Acid Rain in Northern Europe Using a General Convex Formulation

This paper proposes a game theoretical approach of internationalnegotiations on transboundary pollution. This approach is distinguished bya discrete time formulation and by a suitable formulation of the localinformation assumption on cost and damage functions: at each stage of thenegotiation, the parties assign the best possible cooperative state, giventhe available information, as an objective for the next stage. It is shownthat the resulting sequences of states converges from a non-cooperativesituation to an international optimum in a finite number of stages.Furthermore, a financial transfer structure is also presented that makesthe desired sequence of states individually rational and stategically stable.The concepts are applied in a numerical simulation of the SO₂transboundary pollution problem related to acid rain in Northern Europe.     

黑龙江省泥炭中黄腐酸含量及开发途径

泥炭是黑龙江省重要的自然资源，腐植酸是泥炭主要特征指标，黄腐酸是腐植酸的重要组分，其分子量最小、活性最大、应用十分广泛；在省内５个主要区域，按平面和剖面选取大型泥炭矿做黄腐酸含量调查分析。     

生物柴油的发展现状及它在中国的应用前景和应注意的问题(Ⅱ)

作为得自于动植物油脂的脂肪酸甲酯，即所谓的生物柴油是一种来自于动物或植物的可再生燃料资源。目前在世界各国正掀起一开发利用生物柴油资源的热潮。对目前国际上生物柴油开发和利用现状进行了介绍，同时也对中国生物柴油的开发和应注意的问题进行了阐述。     

由磷肥企业副产氟硅酸制备氟化钠的研究

重点介绍了以磷肥企业副产氟硅酸为原料制备氟化钠的新工艺。首先用氨水氨化脱硅得到氟化铵溶液,再向氟化铵溶液加氯化钠合成氟化钠。对影响反应的温度、时间、物料配比等因素进行了探讨,得出具体工艺为:(1)氨化反应:H2SiF6浓度在12%～14%之间,氨水过量25%,反应温度为60～70℃,反应时间120min。(2)氟化钠合成:氯化钠过量15%～20%,反应温度85～90℃。产物氟化钠纯度大于98%,收率大于80%。     

International Cooperation Behind the Veil of Uncertainty – The Case of Transboundary Acidification

The complexities of international environmental problems are only poorly understood. Hence, decision makers have to negotiate about abatement measures even though they do not know the 'true' model of the ecological system and have only a rough idea about the costs and benefits of their action. It will be analysed to what extent this kind of 'model uncertainty' – where players do not only have incomplete information about the payoff functions of the other players, but also about their own payoff function – affects the prospects of international cooperation. Using a simple game-theoretic model, it is shown how countries can use the veil of uncertainty to hide their distributional interests. The arguments are based on a deviation from the common prior assumption, which seems particularly questionable in a setting comprising various countries with different cultural and scientific backgrounds. Finally the model will prove useful to quantitatively and qualitatively illustrate the central role of model uncertainty in the negotiations of the first Sulphur Protocol signed to combat transboundary acidification.     

国外间苯二酸供需动态

简述了美国，西欧和日本市场间苯二酸供需和发展。由于国内该产品系列尚属空白，因此建议加强发展间苯二酸及其衍生产品的生产和研究。