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11.
    
Eight datasets of 1-h black carbon (BC) concentrations measured in Warsaw agglomeration (Poland), at urban background and sub-urban sites, and in Racibórz, a small town in Upper Silesia district (regional background site) were analyzed to evaluate BC levels, daily profiles and statistical distributions of concentrations in Central-Eastern European region. The observed mean levels ranged from 1483 ng m−3 in suburban site during summer to 3358 ng m−3 in regional background site in winter. Observed diurnal patterns were bimodal in the locations dominated by traffic emissions, but unimodal, with elevated evening peak in individually heated residential area. Three theoretical frequency distributions were applied to fit analyzed datasets separately. The lognormal distribution was the most appropriate to represent the middle-range values, while the high concentrations were satisfactorily predicted by the type I two-parameter exponential distribution which was used to estimate the return periods of extreme concentrations for winter months.  相似文献   
12.
吴林 《计算机科学》2001,(6):469-472
概述了近20年来波兰水果产量,栽培的果树品种构成,主栽品种,以及各种水果产品的供需状况和果树科研情况。  相似文献   
13.
Reports two inaccuracies in the paper by Henry P. David, Clinical psychology in other lands. In D. Brower & L. E. Abt (Eds.), Progress in clinical psychology. Vol. III. New York: Grune & Stratton, 1958; (see record 1959-08255-000), which mentions the article by R. Zajonc (see record 1959-02442-001) concerning psychology in Poland. In this correction, Choynowski affirms that he is head, not of the Psychology Section of the Polish Academy of Sciences (which does not exist), but of the Psychometrical Laboratory of this academy to which belong many research institutes. Secondly, he states that the academy also does not envisage a subsection on clinical psychology. He notes that he is afraid that David got these facts from him, but then it is another example of unfortunate semantical misunderstanding in international communication. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
14.
    
This opinion paper presents the current state and future scenarios of Polish lignite mining. For many years, over 1/3 of domestic electricity, that is about 53–55 TWh, has been generated by lignite-fired power plants. Currently, with 63–66 million tons of extraction, Poland is the fourth lignite producer worldwide and the second in the European Union. There are three possible scenarios for the development of lignite mining in Poland by 2050. Unfortunately, despite the huge lignite resources, amounting to more than 23.5 billion tons, and great potential of the mining industry, the future of Polish lignite mining does not look optimistic from the economic point of view. This is associated with social and environmental problems, including the European Union's climate and energy policy. However, this may change in the event of a global economic crisis and unstable geopolitical conditions. Therefore, a new energy doctrine for Poland at least by 2050 is urgently needed.  相似文献   
15.
    
The article aims to analyze the current state and determine the perspectives for oilseed rape production for energy purposes in Poland. According to the study, in recent years the oilseed rape area for energy purposes and the production of biocomponents and biofuels from oilseed rape have been on the rise in Poland. The considerable and spatially concentrated energy potential of oilseed rape in Poland is noted. It is indicated that the greatest energy potential of the oilseed rape production is the four neighboring voivodeships: Dolno?l?skie, Opolskie, Wielkopolskie, and Kujawsko-Pomorskie.  相似文献   
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东欧剧变后波兰的高等教育体制发生了巨大变化,在新的高等教育改革推动下,波兰的大学教师发展出现了新的状况,如大学教师队伍增长缓慢,待遇偏低,兼职普遍,女性教师比例高。这种状况已经开始影响波兰的高等教育质量,也受到了波兰政府的关注。分析东欧剧变后波兰大学教师的发展状况,对我国制订合理的高校教师发展规划具有一定的启发意义。  相似文献   
18.
The quality of results obtained from surface geochemical exploration depends not only on the character of deep petroleum accumulations but also on the influence of many sub-surface factors. One of important factors is the presence of soil moisture in the sampling interval. This research presents the influence of soil moisture on concentrations of gaseous hydrocarbons in sampled soil gases. The comparative analysis was made on for two populations of gaseous hydrocarbon (methane, ethane, propane, i-butane, n-butane, propylene, 1-butene) concentrations measured in soil gas samples collected from the water-saturated (“wet” sampling interval) and water-free (“dry” sampling interval) environments. The comparison was based upon chromatographic analyses of 2974 samples of soil gas, in which 684 samples originated from “wet” sampling intervals and 2290 samples were taken from “dry” interval. Samples were collected in the areas of known gas deposits located in the Fore-sudetic Monocline (SW Poland). Samples collected from the “wet” intervals reveal higher concentrations of almost all analyzed hydrocarbons in comparison with samples from “dry” intervals. Highest differences were observed for methane concentrations and lowest — for total alkanes C2–C4. The increase of concentrations in “wet” sampling intervals can be explained by sub-surface accumulation of hydrocarbons caused by decreasing permeability of water-saturated soils, by the different solubilities of alkanes and alkenes in water as well as by recent generation of methane and alkenes. Considering the results obtained from the area of the Tarchaly gas deposit, it was found that surface pattern of methane anomalies does not reflect the presence of deep gas accumulations, as well as the total alkanes C2–C4 distribution. Hence, the procedure was proposed of elimination of soil moisture influence on the pattern of surface methane anomalies. The procedure includes normalization of measured methane concentrations to the reference levels of geochemical background, which characterize “wet” and “dry” sampling intervals. As a result, the distribution of anomalous methane concentrations was obtained, which, along with the distribution of total alkanes C2–C4, confirms the presence of assessed accumulation of gaseous hydrocarbons. Therefore, the proposed method is correct and supports the application of methane indicator as a petroleum exploration tool.  相似文献   
19.
摘要:横向比较是对我国工业化早期建造史进行深入研究的重要视角。本文以文献、图纸、田野调查实物遗存和口述采访“四重互证”为基础,并以波兰相应建筑结构遗产技术资料为旁证,多方案研究了江门甘化厂钢筋混凝土预制双曲拱壳屋盖的主次结构受力原理、构件拆分、建造方式与步骤等建造信息,以3d打印模型复原了主体结构。这不但弥补了甘化厂工业遗产结构技术价值评判的空缺,铺垫此类技术遗产的群体比较与技术发展演进研究,也为“一带一路”国家文化战略提供支撑作用。  相似文献   
20.
波兰是中东欧经济和矿产资源第一大国,且地缘优势突出,是欧洲市场的重要窗口国家。本文通过对波兰的政治、经济、资源禀赋、市场需求、政策法规、企业需求等综合分析,全面评价了波兰矿产资源及与其相关的基础设施等领域的投资潜力,波兰铜矿、煤炭开发投资合作前景良好,另外,中国企业在风能、太阳能等清洁能源设施建设、煤制气技术以及交通基础设施建设方面前存在明显优势。文章最后提出中国与波兰矿业及相关产业合作构想,为中国企业\"走出去\"提供参考。  相似文献   
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