Experimental approaches and analytical technique for determining heavy metals in fallen dust at ferrosilicon production factory in Edfu, Aswan, Egypt

In this study aimed to evaluate the pollution extent of metals and nonmetals inside and outside the ferrosilicon production factory in Edfu, Aswan, Egypt, raw materials (quartz, cokes, iron oxides), ferrosilicon alloy, silica fume, dust and suspended dust (at different sites) samples were collected from the factory, and fallen dust samples were collected from outside the factory, horizontally (at different sites and different distance and directions) and vertically (at different floors in the selected buildings). Gravimetric methods, X-ray fluorescence (XRF), flame photometer, wide range carbon determinator and atomic absorption spectroscopy tools were used for elements determination. The results indicating that the fallen dust and its element contents on southern factory walls being higher than those on eastern factory walls may be due to the nature of the dusts and effects of wind force and wind direction. Fallen dust levels in different regions outside the factory were found to be affected by the distance, direction and floors. The nature of dust samples was affected by gravity and the suspended dust in different factory units depended on the work capacity and method of handling materials by personnel in different production units. Silica fume was a complicated problem, had dangerous effect against the workers' health, and was characterized by high concentrations of SiO2(90.6%～93.6%) and heavy metals (Mn, 420.6×10-6～520.3×10-6; Fe, 2354×10-6～2685×10-6; Co, 80.7×10-6～101.6×10 6 and Ni,5.3× 10-6～6.05× 10-6). The TSP (Total Suspended Particulate) levels in all factory units were higher than the recommended air quality value (70 μg/m3) under Egyptian law. The effect of ferrosilicon factory fallen dust on the surrounding regions decreased with increasing distance between the factory and these regions. The suspended dust samples in the factory units and their components greatly exceeded national and international standards, so health and environmental criteria must be enforced on these units.     

试析冰心"爱的哲学"中爱情题材的缺席

冰心“爱的哲学“中爱情题材的缺席,主要是她所接受的基督教义中博爱思想的反应,也同她对艺术和人生的独特审美理想以及她深厚的恋母情结密切相关.她对母爱、童真和大自然的爱的歌颂,以及对国家和人民、对美好生活的宣扬,在“五四“时期文学和现当代文学的创作中独树一帜,形成了她个性化的文学风格.     

茂名市生活垃圾处理技术的实际应用问题

介绍了茂名市生活垃圾处理的现状，结合分析卫生填埋、焚烧、堆肥等生活垃圾处理技术在茂名市环境保护中应用中存在的局限性和问题，提出了未来适宜于茂名市生活垃圾处理的综合途径，即分类收集——分筛——堆肥和焚烧发电并举。     

时代悲剧的体现者——浅析巴尔加斯·略萨《绿房子》中的主人公形象

秘鲁作家巴尔加斯·略萨的《绿房子》通过妓院“绿房子”的兴衰史描绘了20世纪20年代以来秘鲁社会长达40年的生活,刻画了印第安人为反对剥削和压迫而进行的反抗。文中的主人公,“绿房子”的创始人安塞尔莫是20世纪的小说中最典型的“反英雄”人物。他是善与恶的综合化身,同时也是一个反叛人物。“绿房子”的建立就是向社会的宣战。但由于历史的局限性,注定了他是一个悲剧人物,读者从他的身上不仅感受到了“自我”的失败,而且也感受到了整个社会的失败。     

南京麒麟铺南朝陵墓神道石刻墓主新考

南京麒麟铺一对南朝陵墓神道石兽过去一般认为是宋武帝初宁陵神道前列置。但据文献记载,初宁陵应该在蒋陵东南蒋庙附近,陵前仅设简易的竹木制的“标”,推测位于今马群一带。长宁陵与初宁陵同属钟山陵区,但比后者远,神道石刻又经南齐搬移,与麒麟铺石刻的位置及特征完全吻合。因此,麒麟铺南朝陵墓石刻更有可能属于宋文帝长宁陵。     

茶梗、茶枝屑代料对黑木耳生长及品质的影响

对比分析黑木耳在茶梗、茶枝屑不同基质配方上的菌丝生长、出菇表现、产量及营养成分。结果表明:黑木耳在各基质配方上均能正常生长、出菇,除配方CG1(78.5%茶梗)、CZ1(78.5%茶枝屑)产量及生物学效率低于对照CK(78.5%杂木屑)外,其他均高于CK,其中配方CZ2(48.5%茶枝屑)最高,生物学效率比CK高出10.09%;含茶枝屑配方栽出的黑木耳粗蛋白、粗脂肪、粗纤维、Ca、Fe、Zn、总氨基酸、必需氨基酸等营养成分均高于CK,而含茶梗配方栽出的黑木耳则是粗蛋白、粗多糖、灰分高于CK。综上所述,茶梗、茶枝屑作为代料栽培黑木耳可行,茶枝屑代料栽培出的黑木耳总体品质要优于茶梗代料。     

“When We Make Mistakes,People Die!”: Constructions of Responsibility for Medical Errors in Televised Medical Dramas, 1994–2007

Despite the publicity of medical mistakes in recent years, most people vastly underestimate the frequency of errors, likely because media stories focus on flawed individuals, not institutional problems. This research examined contemporary medical dramas for constructions of responsibility in treating patients. Findings indicate that medical mistakes were rare in the storylines, meaning that health professionals were almost always depicted as behaving responsibly—to the extent that they were considered heroes. Mistakes were suggested to be due to the health professional's inexperience, institutional flaws that led to errors, and temporary personal problems. Health professionals were shown learning from their mistakes, suggesting that they would not be repeated. For committing mistakes, health professionals faced a range of consequences, depending on disclosure of the errors and whether patients had friends or families to push for restitution. Errors occurred throughout the years studied, but were greatest in the years when the dramas featured inexperienced medical students or residents as the main characters. Problems with the fictional health care system were largely ignored, suggesting one explanation for the focus on individual responsibility in real-life discourse.     

浅析房产面积测算软件的选择和测试

房产面积测算工作溶入计算机应用技术,可以大大提高工作效率,降低工作成本,提升企业核心竞争力。但当今软件市场鱼龙混杂,开发背景各不相同,轻意上马未经测试完善的房产面积测算软件会给工作造成极大的影响。文章初步探讨了房产面积测算软件的选择和测试。只有经过反复测试完善的软件,才能在房产测绘工作中真正达到事半功倍的效果和精益求精的质量要求。     

暖通在冶金设计中需要注意的几个问题

随着社会经济的发展、劳动生产力的提升和国家对劳动卫生安全的重视,冶金行业的生产技术水平得到了长足的发展和进步。暖通专业作为冶金生产辅助系统中不可或缺的一分子,其重要性、关键性及特殊性正日益凸显。在通风除尘设计中,粉尘和有害气体的性质分析、动力风机的配置、净化设备和措施的选择是尤为重要的三个关键因素,决定着整个通风除尘系统的好坏。     

鸦片战争前的粤海关

鸦片战争前,长距离贸易的兴盛,使粤海关成为全国最主要的商品流通枢纽之一。粤海关为各大区域之间的经济往来提供了平台,促进了全国区域间的商品流通,满足了市场需求;发达的商品流通也为粤海关带来了丰厚的税收,使其财政地位日益突出,又有力地促进了广东自身商品经济的进一步发展。