Based on the theory of unsaturated soil mechanics and the properties of compacted expansive soil, this paper takes the northern part k12 + 840 - k12 + 920 of nanning urban highway as an example to studies some aspects of lime improvement of expansive soil and the technology of construction. the chief content of this paper is : the lime improvement mechanism of expansive soil ; confirm the technical parameters of lime mixed from the results of test in laboratory ; the scale - down test to define the maximum effective grain size of expansive soil when it is improved by lime ; by building bank slope model and making use of finite element seepage flow program of saturated - unsaturated to calculate the examples, this paper simulates the humidity site in order to checkout the effect of lime improvement ; studies and proves that it is feasible to mix blocky expansive soil and pulverous lime, and to fill roadbed by common construction machines etc.
本文研究的工作就下述幾個方面展開:用石灰改良膨脹土的機理;通過室內試驗確定摻灰的技術指標;在室內進行膨脹土摻灰的最大有效粒徑的模擬試驗,即
鈣離子水試驗,由此總結出「粉?塊」灰?土攪拌工藝的有效性、合理性和可行性;用數
值方法對路堤使用期的濕度場進行模擬,並與路堤的強度?變形的計算域耦合,以檢驗土性改良的效果,從而探索一種描述改良膨脹土路堤運行工況的數
值方法;用現有最常用的且費用最低的施工機具,對灰?土進行「粉?塊」攪拌摻和及路基的填築施工等。
Average usual calcium intakes in each intake quartile were 280, 420, 580 and 880mgd. we observed that women of the higher calcium intake quartile had higher mean bone mass values
按
鈣進食量將她們分為四個組別,在這四個組別中,她們的
鈣進食量的平均
值分別為每天280 、 420 、 580和880mg 。
Early diagnostic value of procalcitonin for sepsis
降
鈣素原對膿毒癥的早期診斷價
值
The main products include calcium supper phosphate, sulphuric acid, sodium fluorsilicate, sodium phosphate, and compound fertilizer, ect
人,主要產品普
鈣硫酸氟硅酸鈉磷酸三鈉復混肥等,工業產
值逾億元。
The velocity of astrocytic intracellular calcium elevation to the peak value is a slightly faster than neurons
Ast
鈣水平達到峰
值的速度略快于神經元。
The strengths of high volume fly ash mortars of different curing time, which are mixed with two kinds of low - quality fly ash, and different kinds and quantities of activators, are examined. and the ph values of their fly ash mortars are examined. the activation mechanism of fly ash and the factors influencing " enhancing - calcium " are analyzed and discussed
測定了由兩種級粉煤灰配製的高摻量粉煤灰水泥漿體在不同的激發劑種類與摻量情況下各相應齡期的抗折、抗壓強度,並對其中幾種粉煤灰水泥漿體各相應齡期的ph
值進行測試,對粉煤灰活化機理和影響粉煤灰「增
鈣」的因素進行分析與探討。
Patients with this form of primary hyperparathyroidism are usually picked up with routine chemistry panels in which a high serum calcium is noted
患有原發性甲狀旁腺功能亢進癥的病人通常隨身攜帶電解質常規檢測儀,它能隨時監測到血
鈣的高
值。
The important parameters, namely the ph of solution, the concentration of 4 - bapta and the supersaturation of cacco3, were systematically studied
對其中重要的參數(溶液的ph
值、 4 - bapta的濃度、碳酸
鈣的過飽和度)對晶體形貌和結晶狀態的影響進行了系統的研究。
The yearly burning raised soil pll, available n and k and reduced soil organic mater, total n, total p, available p and ca
連年火燒跡地土壤ph
值升高,有機質、全氮、全磷、速效磷、
鈣的含量均有所下降,而有效氮、有效鉀的含量有所增加。
The intrinsic chemical reaction rate constant was insensitive to the precursor and the calcinations history of cao, but the product layer diffusivity was affected by these two factors in the initial stage and decreased to a constant value with increasing conversion of cao
化學反應速率常數不受氧化
鈣的先驅物與其鍛燒程序所影響,但產物層擴散系數在初始階段則受到上述兩因素的影響,並隨著氧化
鈣的轉化而減少至一定
值。
1 cummins b 狼 之 友 auckland m , cummins p. cardiac - specific tropinin i , ra dioimmunoassay in the diagnosis of acute myocardial infarction. am heart j , 1987 , 113 ( 6 ) : 1333
3李靜,胡大一腸胃疾病癥狀頊志敏,等.血清心臟肌鈣蛋白i在急性心肌梗塞中的臨床價值.中國循環雜志, 1999 , 14 ( 9 ) : 42