PH玻璃电极对比观测及误差研究

经过对PH玻璃电极对比观测实验,总结其在日常观测中衰减变化规律,以及PH电极失效前所具有的特征;讨论了对现有PH观测数据进行修正的方法,并编著相关修正程序;分析日常存在的测量误差,提出提高观测精度的措施。     

Photocatalytic degradation of dichlorvos using TiO2 supported on hollow glass microbeads

In this paper, a method for TiO₂ supported on hollow glass microbeads was described and the feasibility of photocatalytic degradation of dichlorvos using supported TiO₂(TiO₂/beads) was studied. The results showed that 1.0×10^-4 mol.dm^-3 of dichlovos could be completely photocatalytically degraded into PO₄^3- after 120 min illumination with a 375 W medium pressure mercury lamp. The effects of the amount of TiO₂/beads and concentration of Cu²⁺ on the photocatalytic degradation were also investigated. Some intemediate products of photocatalytic degradation of dichlorvos were detected.     

金属尾矿建筑微晶玻璃组成的研究

从晶格常数、晶核剂、低共熔点等方面讨论了玻璃主成分确定、晶核剂选择等问题。用差热分析、Ｘ射线衍射等测试方法，研究其核化和晶化特性。研究表明：金属尾矿制取建筑微晶玻璃不但可行，而且ＣａＯ—ＭｇＯ—Ａｌ２Ｏ３—ＳｉＯ２系统玻璃在较低温度下即开始晶化，且均以透辉石为主晶相，尾矿掺量可达６５％以上。     

GGR6对楠木春季造林的效果研究

GGR6是一种绿色植物生长调节剂，能促进幼苗的生根、成活和生长．楠木在春季造林前，用50mg／L的CGR6对其一年生苗进行浆根或泡根处理1h后再进行造林，能显著地提高其造林成活率，并能促进林木的生长．     

Geochemistry of soil around a fluoride contaminated area in Nayagarh District,Orissa, India: Factor analytical appraisal

Fluoride contamination in soil was studied in the vicinity of a hot spring in Nayagarh district of Orissa. Both bulk soil from 0 to 30 cm depth and profile soils from 0 to 90 cm depth were analyzed for total fluoride (F_t) and 0.01 M CaCl₂ extractable fluoride (F_ca), major elements, pH, EC and Organic Carbon (OC). High concentrations of both F_t and F_ca were observed in the area surrounding the hot spring and the village of Singhpur. Principal factor analysis (PFA) on the parameters of the bulk soils suggests that two major chemical processes due to three factors, control the soil geochemistry of the area. Factor-1 contributes 37.11% of the total variance and is strongly loaded with Al, Si, Fe, F_tand F_ca, and explains the fluoride enrichment of the soil, whereas the second and the third factors contribute 16.6 and 12.2%, respectively and explain the controlling process of carbonate precipitation and soil alkalinity. Multiple regression analysis of the scores of the factors was performed to derive a fluoride contamination index in soil. The magnitude of the factor effect on the contamination index follows the order of Factor-1 > Factor-2 > Factor-3. The spatial distribution of the contamination index is used to classify the area into highly contaminated, moderately contaminated and uncontaminated zones.     

显像管玻壳铅尘在大气中的迁移扩散规律和污染特征

以石家庄市显像管玻壳厂排放的铅尘为研究对象，通过在该玻壳厂周围土壤表层布点采样，较系统地研究了铅尘在大气中的迁移转化规律及其污染特性。研究结果表明，用高斯模式能成功地预测铅尘在大气中的迁移扩散规律。     

Modelling the meteorological influence onthe yellowing of spring wheat leaves

ＭｏｄｅｌｌｉｎｇｔｈｅｍｅｔｅｏｒｏｌｏｇｉｃａｌｉｎｆｌｕｅｎｃｅｏｎｔｈｅｙｅｌｌｏｗｉｎｇｏｆｓｐｒｉｎｇｗｈｅａｔｌｅａｖｅｓＷａｎｇＦｕｔａｎｇ；ＷａｎｇＳｈｉｌｉ（ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＭｅｔｅｏｒｏｌｏｇｉｃａｌＳｃｉｅｎｃ...     

丁二酸钠对氯化钙和水玻璃溶液的渗透性影响

采用正向渗透试验方法测定了氯化钙和水玻璃溶液添加丁二酸钠后溶液在粉尘介质中的渗透规律。该研究结果可有效利用氯化钙和水玻璃进行固土抑尘。     

岩浆中主要挥发份含量──熔融包裹体和淬火玻璃证据

挥发份在成矿熔体和流体的形成与演化过程中扮演着相当重要的角色。直接分析火成岩矿物中的熔融包裹体是确定岩浆结晶前挥发份含量的最理想方法。本文在现有熔融包裹体（和海底火山淬火玻璃）中挥发份含量数据的基础上．估算了主要挥发价（H2O、CO2、Cl、F、S等）在基性、中性和酸性等各类岩浆中的平均含量。     

钢板弹簧断裂失效行为研究

目的研究汽车钢板弹簧断裂失效的原因。方法通过化学成分分析、硬度测试、断口形貌分析、金相组织分析等手段研究汽车钢板弹簧的失效行为。结果由于表面脱碳层过深,使得表面疲劳强度及耐蚀性降低,同时因长时间腐蚀作用在表面产生腐蚀坑及腐蚀裂纹,并且在循环外力作用下,腐蚀缺陷处产生应力集中,早期裂纹萌生于表面腐蚀缺陷处并扩展,最终导致腐蚀疲劳断裂。结论通过控制热处理条件、增加加工余量并去除脱碳层、表面喷丸处理等措施,钢板弹簧表面耐蚀及抗疲劳性能大幅提高,可有效避免脱碳引起的腐蚀疲劳断裂。