怒江及澜沧江双雨季地区的小水电站径流分析计算

在“三江并流”区内的怒江和澜沧江中、上游区域中新建小水电站，由于缺乏水文资料，径流计算中通用的水文比拟法不适用于此区域。过去通常采用径流深查图法，经电站建成运行后验证此方法计算的径流成果偏小。分析后提出在怒江及澜沧江双雨季地区的小水电站可采用新的径流计算方法一即水量平衡法，并结合具体工程验证其合理性。     

调味品在川菜中的应用

为让调味品生产企业和消费者进一步认识、研发川菜风味的调味品,从调味品在川菜中的选择,调味的手段及成菜风味等3个方面说明并阐述其应用.根据社会发展所需,认为调味品在川菜中应用的趋势是大量使用复合调味品进行分段调味.     

四种特色鱼的加工技术

为增加特色鱼制品的品种,介绍了4种特色鱼的加工方法.熏鱼是将草鱼、鲤鱼和鲫鱼等处理、开片、切块后,经浸渍、油炸和调味而制成,产品呈酱褐色,软硬适度,香味浓郁,味美可口.酒糟鱼是将优质的青鱼、草鱼或鲤鱼等处理后,经盐渍、日晒、装坛和封坛等工艺制成的,产品色泽红润,香味独特,肉质较硬.鱼丝是将优质鲜鱼处理后,经剖片、采肉、绞肉、加配料、切丝及干燥等工艺制成,味美可口,食用方便,营养丰富.五香烤鱼是以小杂鱼、虾和低值鱼为原料,经调味、烘烤而制成,产品香酥鲜美,营养丰富.     

The effect of solar radiation on the flavonol content in broccoli inflorescence

The effect of solar radiation on the quercetin and kaempferol contents in the inflorescence of three broccoli cultivars (‘Lord’, ‘Marathon’ and ‘Fiesta’) was investigated from 1999 to 2001. Great differences in the contents of both flavonols, dependent on growing time and cultivar, were found. Quercetin and kaempferol contents varied from 14.3 to 81.0 mg kg⁻¹ f.w. and from 35.9 to 213 mg kg⁻¹ f.w., respectively. Inflorescences of the cultivar ‘Lord’ were characterised by the highest mean content of quercetin and those of cultivar ‘Fiesta’ of kaempferol. The contents of both flavonols were highly positively correlated with total solar radiation in the period from planting to the harvest of broccoli inflorescences.     

丹江口大坝加高工程施工期的度汛方式探讨

南水北调中线工程是为了解决京、津、华北地区水资源紧缺而实施的战略性工程,丹江口大坝加高工程是中线工程的关键性工程之一.丹江口大坝初期工程在大坝加高施工期间仍然承担着汉江中下游防洪任务,妥善解决好丹江口大坝加高工程建设的顺利进行与初期工程的防汛度汛、正常运行管理关系,意义重大.现根据丹江口大坝加高工程施工期的度汛条件、度汛标准以及建设工期的要求等,对丹江口大坝加高施工期的度汛技术方案进行了探讨.     

Thiamine and Fatty Acid Content of Lake Michigan Chinook Salmon

Nutritional status of Lake Michigan Chinook salmon (Oncorhynchus tshawytscha) is inadequately documented. An investigation was conducted to determine muscle and liver thiamine content and whole body fatty acid composition in small, medium and large Chinook salmon. Muscle and liver thiamine concentrations were highest in small salmon, and tended to decrease with increasing fish size. Muscle thiamine was higher in fall than spring in large salmon. The high percentage of Chinook salmon (24–32% in fall and 58–71% in spring) with muscle thiamine concentration below 500 pmol/g, which has been associated with loss of equilibrium and death in other Great Lake salmonines, suggest that Chinook appear to rely less on thiamine than other Great Lakes species for which such low concentrations would be associated with thiamine deficiency (Brown et al. 2005b). A positive correlation was observed between liver total thiamine and percent liver lipids (r = 0.53, P < 0.0001, n = 119). In medium and large salmon, liver lipids were observed to be low in fish with less than 4,000 pmol/g liver total thiamine. In individuals with greater than 4,000 pmol/g liver thiamine, liver lipid increased with thiamine concentration. Individual fatty acids declined between fall and spring. Essential omega-3 fatty acids appear to be conserved as lipid content declined. Arachidonic acid (C20:4n6), an essential omega-6 fatty acid was not different between fall and spring, although the sum of omega-6 (Sw6) fatty acids declined over winter. Elevated concentrations of saturated fatty acids (sum) were observed in whole body tissue lipid. In summary, thiamine, a dietary essential vitamin, and individual fatty acids were found to vary in Lake Michigan Chinook salmon by fish size and season of the year.     

高温季节进行坝体二期水管冷却时的表面保温

在高温季节进行坝体二期水管冷却时，受到外界气温的影响，在表面5～7m范围内，很难降低到规定的温度，接缝不能充分张开，影响到接缝灌浆质量．针对这个问题进行分析，提出了简便的计算方法，应用此方法进行水管冷却计算，根据所得结果表明，采取相应厚度的保温板进行表面保温，可得到良好的表面保温效果     

Effects of Genetic, Pre- and Post-Harvest Factors on Phenolic Content and Antioxidant Capacity of White Asparagus Spears

The effects of genetic, pre-harvest (season of harvest, spear diameter, spear portion and spear tip color) and post-harvest factors (storage and domestic preparation practices, e.g., peeling and cooking) on total phenolic, flavonoid and ascorbic acid content of white asparagus spears and their correlation with antioxidant capacity (DPPH and FRAP) were studied. Results showed that genetic material was important for the total phenolic content but not season of harvest, spear diameter or storage. Violet spear tips and apical spear portions showed the largest amount of total phenolics. Peeling did not affect total phenolics in fresh asparagus, whereas it reduced their content in stored asparagus, while cooking resulted in an increase in both fresh and stored asparagus. However, the soluble extract of total phenolics and flavonoids were minor and the missing significance of phenolics and flavonoids in antioxidant capacity of white asparagus spears depends on these small amounts.     

鄱阳湖水体无机氮时空分布特征研究

为了分析鄱阳湖水体无机氮的时空分布,于2006年1月和7月对鄱阳湖湖面及其主要支流下游的表层水进行系统采样,分析研究了各种形态无机氮的分布变化特征。结果表明,枯水期鄱阳湖无机氮在上游主航道较低,低于全湖平均值,航道中段无机氮含量明显高于其它区;丰水期氮含量高值区出现在主航道中段,在下游处无机氮含量又呈现上升的趋势;鄱阳湖NH4+-N和DIN在枯、丰水期有相似的变化规律;鄱阳湖主航道枯水期NO3--N、NH4+-N、DIN浓度明显高于丰水期,而NO2--N恰好相反,其主要支流丰水期NH4+-N和DIN含量也比枯水期低。