稀土棕红色陶瓷颜料的制备

在低温下,采用溶胶均匀共沉淀法合成了含少量稀土氧化物CeO2的棕色陶瓷颜料,并应用颜色测定、SEM及XRD分析等手段对颜料的颜色、粒度及结晶构造进行了表征。同时,将合成的颜料应用于陶瓷釉料中,表明该颜料可以应用于1320℃的高温环境下。     

Aplysia sea hare assimilation of secondary metabolites from brown seaweed,Stypopodium zonale

JuvenileAplysia dactylomela were found feeding in abundance on the tropical brown algaStypopodium zonale, a seaweed previously shown to contain numerous unique terpene-quinone natural products. Lipid extracts of these herbivorous mollusks were shown by TLC and HPLC-NMR analyses to contain appreciable quantities of twoS. zonale metabolites as well as one new but closely related compound. Spectroscopic analyses of the new compound in concert with functional group modifications identified this new compound as 3-keto epitaondiol. A careful analysis of the seaweed extract failed to locate this ketone, and thus, it most likely represents anAplysia-biotransformed compound. This is the first clear reported observation of metabolite transfer between an alga of the phylum Phaeophyta and a sea hare.     

Preparation,characterization and salt-resistance of a coal based super absorbent composite

Potassium humate was extracted from brown coal.A novel super absorbent composite,poly (acrylic acid-co-acrylamide)/potassium humate (PAA-AM/KHA),was prepared by graft polymerization of acrylic acid,acrylamide and coal based potassium humate using N,N'-methylenebisacrylamide as a crosslinker and potassium peroxydisulfate as an initiator.The effects of reaction temperature,degree of neutralization of the poly (acrylic acid) and the amounts of crosslinker,initiator and potassium humate were investigated.Salt resistance tests were also carried out.The composite prepared under optimal conditions had a potassium humate content of 10% and exhibited a water absorption of 770 g/g in distilled water,and 349,286 and 41 g/g in 0.5 mol/L KC1,MgCl2 and AlCl3 solutions respectively.The results indicate that the salt resistance of PAA-AM/KHA was superior to that of poly (acrylic acid-co-acrylamide) because of the collaborative effect of functional groups of the coal based potassium humate.The PAA-AM/KHA micro powder was characterized by IR spectroscopy and the micrographic surface was characterized by scanning electron microscopy.Introduction of potassium humate into the poly (acrylic acid-co-acrylamide) structure creates a composite more suitable for use as a water-managing material in the renewal of arid and desert environments.The salt resisting property of the composite is improved,production costs are reduced and the growth stimulant effect is still present.     

糙米储藏品质评价数学模型的建立

为对糙米储藏过程中的劣变进行及时调控,选用2个粳糙米样品,测定不同储藏条件下的脂肪酸值、发芽率、生活力、电导率、降落数值等生理生化指标,进行各指标间的相关性分析,采用灰色关联度分析法对各项指标进行储藏品质敏感指标的筛选,并以各项敏感指标为自变量,以碾磨后的大米食味值为因变量,采用逐步回归的方法建立敏感指标与糙米最终食味值间的数学模型.结果表明:脂肪酸值、电导率对粳糙米储藏品质有显著影响,其中脂肪酸值对储藏品质敏感度最大,电导率次之;辽星糙米储藏品质评价的数学模型为y =92.57 +0.83X脂肪酸值-2.08X电导率,盐丰糙米储藏品质评价的数学模型为Y=-99.42+4.03X脂肪酸值-1.44X电导率.     

板栗壳棕色素的提取及理化性质研究

研究了板栗壳棕色素的提取及其理化性质。实验结果表明,该色素对光,热稳定性很好,具有一定的应用开发价值。     

糙米被玉米象感染后其储藏品质变化研究

以粳糙米为材料,设定不同的虫口密度,检测不同感染时间糙米的降落数值、脂肪酸值、POD等储藏品质指标,采用SPSS等方法分析虫口密度和感染时间对糙米储藏品质的影响.结果表明:随着虫口密度的增加和侵染时间的延长,脂肪酸值上升,降落数值下降;POD活性在前50 d无明显规律,50 d后迅速下降;虫口密度超过100头/300 g时,30 d后脂肪酸、降落数值就发生剧烈变化;不同虫口密度感染的糙米样品,其降落数值、脂肪酸值在不同感染时间呈现显著差异性;降落数值与虫口密度和感染时间呈显著负相关,脂肪酸值与虫口密度和感染时间呈显著正相关,POD与感染时间负相关.     

浅谈300MW“W”火焰锅炉掺烧褐煤后的优化调整

为进一步降低发电成本,全面提高电厂的经济效益,针对300MW＂W＂型电厂锅炉的特性,以及锅炉在燃用高挥发份褐煤所表现出来的技术特点,本文提出了合理的配烧方式以及在掺配后优化调整措施,经过一年多的实践掺烧取得了良好的效果,不但保证了锅炉安全运行,而且大大提高了机组的经济效益。     

污染土壤的来源及危害性

通过文献资料分析、结合典型案例及实际调研的数据,采用类比分析和总结归纳等方法,发现土壤污染主要产生于工业、农业、交通运输及日常生活等领域,主要污染物有重金属、有机物、病原微生物及放射性物质等.污染土壤具有隐蔽性、滞后性、积累性、地域性、不可逆转性和难治理性等特点.污染土壤不仅对人体和动植物的健康及生命造成严重危害,还会影响社会安全生产.我们应提高全民的环保意识,从源头预防土壤污染,加强安全生产并及时治理和修复受污染的土壤.     

SYP增效剂用于褐铁矿烧结的试验研究

根据昆钢红河钢铁有限公司烧结以褐铁矿为主的原料特点，结合生产实践提出了添加SYP增效剂烧结的技术思路。在实验室烧结杯试验取得初步效果的基础上，组织了工业性试验，验证了SYP增效剂改善烧结生产技术经济指标的作用。SYP增效剂的使用，在一定程度上解决了褐铁矿烧结强度差、返矿量大的问题，为拓宽资源利用，降低成本奠定了良好的基础。     

130t/h褐煤锅炉燃烧系统设计要点分析

对通辽发电总厂和赤峰热电厂设计褐煤的燃烧和结渣特性进行了分析,通过采用合适的炉膛断面热负荷、燃烧器区域热负荷及双调节煤粉浓缩燃烧技术对燃烧系统进行设计。投产后两台锅炉达到50%负荷不投油稳燃,同时有效防止了炉内和喷口结渣。