温室气体中国的新财源?

什么都不用多做,每年就有100万美元的收入,天下真有这样的好事？对河北省一个乡镇福利油脂厂的老板李敏来说,这样的好事似乎突然真的发生了。几年前,为了解决工厂经常停电减产的问题,李敏决定自己建一个小发电厂。他购买了一套400千瓦的秸秆发电设备,准备用当地最常见又最便宜的秸秆作发电的燃料。     

编辑推荐

雷克萨斯在今年上海车展上展出的油电混合动力车CT200h,成为今年春天混合动力车的最大亮点。CT200h搭载了雷克萨斯完全油电混合动力系统,并成为全球首款搭载该系统的豪华掀背车型。优化的油电混合动力系统设计,不仅实现了超低的废气排放量,更赋予CT200h非凡的驾乘体验。     

IPCC新报告：警告，还是警告

除了减少二氧化碳排放之外,绝无第二条道路,如果我们还想阻止气候变化的话。一项新研究认为,所谓减少除二氧化碳之外的其它温室气体排放也可以延缓全球变暖的说法,至少有一部分的理论基础是错误的。     

博物馆预防性保护研究之一：银器的腐蚀及应对措施

硫化氢与羰基硫是博物馆的污染气体之一,大英博物馆的一个科研小组发现,在博物馆环境背景下,羰基硫是造成银器腐蚀的主要污染气体。     

生猪养殖恶臭气体产生及污染防治探讨

随着经济的不断发展,人们对肉类产品的不断需求带动了生猪养殖,生猪养殖过程中不可避免产生环境污染,恶臭气体成为人民群众反映强烈的热点投诉问题.分析生猪养殖恶臭气体产生环节和宜采取的污染防治措施可有效减轻养殖恶臭气体对大气环境的影响.     

矿化溶液浸泡-气体扩散法加固骨质文物

本研究探讨了以钙源、磷酸盐源、胶原蛋白矿化溶液浸泡—气体扩散多循环法加固古代骨骼材料的工艺方法，并利用超景深显微镜、傅里叶转换红外光谱(FT-IR)、X射线衍射仪、扫描电镜和色度分析法、抗压强度试验等方法研究了保护效果。结果表明，利用该工艺处理后的生物磷灰石骨骼具有加固材料成分和骨质本体一致，原位合成且深入到骨质内部等特点，克服了有机聚合物及其他矿物材料简单物理充填的一些弊端，且处理过程简单、效率高、外观改变小，能满足对脆弱骨质文物、人骨及其他动物骨骼的加固保护需求。     

文物展柜密封性能检测方法研究

The ventilation rate of a museum showcase is an important indicator for evaluating its sealing performance. In order to evaluate the ventilation rate of a showcase accurately, objectively and scientifically, some details of the detection and evaluation methods were comprehensively studied on the basis of GB/T 36110—2018. The results show that in order to achieve a better fitting effect, the carbon dioxide concentration outside a showcase should be fixed—a fixed concentration between 300 X 10 and 600 X 10 (volume fraction) had little influence on the fitting results. The average ventilation rate of the showcase at each moment was obtained by the numerical calculation method. When the detection time was short, values were unstable and fluctuated greatly; after stabilization, they were close to the fitted ventilation rates. The initial carbon dioxide concentration had a great influence on the fitting results of ventilation rate. The initial concentration of carbon dioxide gas in a showcase should be basically fixed between 20 000 X 10" and 25 000 X 10 ~ (volume fraction) during detection, so that the testing results were comparable. The carbon dioxide mixture in the airtight showcase is relatively uniform, and no obvious dip occurred. The location of detection equipment has little influence on the fitting results of ventilation rate. If the fitted R reaches 0. 9, the results are considered valid, due to various errors in the detection process. © 2023, Sciences of Conservation and Archaeology. All Rights Reserved.     

煤炭之王

煤是中国不断扩增的发电厂所使用的主要能源，虽然廉价，但污染严重。自1990年以来，中国的煤炭消耗量上升了一倍多，虽然煤炭产量高居世界之首，却几乎难以满足本国的需求。中国每周都有相当于两座中型燃煤发电厂的电力设施落成．每年增设的发电能力与英国的全部电力网相差无几．这对世界环境意味着什么呢？近期中国的二氧化碳排放量已经超过美国。