查询词典 D.A.

According to "EPA Fate, Transport and Transformation Test Guidelines, OPPTS 835.3170—Shake Flask Die-Away Test" and "OECD Test Guidelines of Chemical 309", a simulated biodegradation experiment was conducted with the organic pollutant parathion-methyl. First-order biodegradation rate constants for water and sediment were -0.053 and -0.295 d-1, respectively, and half-lives were 13.1 and 2.3 d, respectively.

试验结果表明，甲基对硫磷在天然地表水中生物降解一级速率常数为：-0.053 d-1；在天然地表水沉积物中生物降解一级速率常数为：-0.295d-1；在地表水中生物降解半衰期为：13.1d；在地表水沉积物中生物降解半衰期为：2.3d。

A USB frame's end, called EOP (end-of-packet), is indicated by the transmitter driving 2 bit times of SE0 (D+ and D- both below max) and 1 bit time of J state.

一个USB帧的目的，要求业，是所显示的发射机驾驶2位次SE0 （丁+和D -都低于最大值）和1位时间的J状态。

METHODS: Oblique sagittal T1 weighted MR imaging at closed mouth was obtained from 88 joints of 44 patients who complained of unilateral TMJ pain. On MRI view, a straight line AE was drawn through the lowest point of articular eminence and the highest point of external auditory meatus, and then the perpendicular lines were dropped from condylar head and the most poterior band of the disc to AE on which the cross points were marked as C′ and D′.

关节盘移位程度的测量方法：MR成像层面上关节结节最下点到外耳道最上点的连线为直线AE，髁突顶点及关节盘最后点与直线AE垂直相交点分别为C′、D′，分别求得AD′距离、C′D′距离，代表关节盘在关节窝前后方向的位置。

Hong Kong GP Dr Lauren Bramley claims that around 70-80 percent of her patients have a vitamin D level below the healthy benchmark of around 50ng/ml (nanogram of vitamin D per milliliter of blood).

另外，深色皮肤的人是危险的，因为深色皮肤的人黑色素运作象太阳阻拦防止UVB光芒那样阻止维生素D。

Patients with mild or moderate hepatic failure or intestinal fat-malabsorption syndromes, as well as patients who are taking anticonulsant medications, glucocorticoids, or other drugs that actiate steroid and xenobiotic receptor, require higher doses of itamin D (Table 3).7,88 Exposure to sunlight or ultraiolet B radiation from a tanning bed or other ultraiolet B–emitting deice is also effectie.

有几类病人需要更高剂量的维生素D（表3）[7，88]，如轻中度肝功能不全、肠脂肪吸收不良综合征的病人，服用抗惊厥类、糖皮质激素类以及可激活类固醇和异生质受体类药物的病人。病人通过适当的日光照射、躺在晒黑床上紫外线B照射或其他紫外线B放射仪治疗，也能取得增加维生素D用量的效果。

Soule gave command of what was designated as "Task Force Dog" to his assistant division commander, Brigadier General Armistead D."Red" Mead, a hard-driving West Pointer who had been G-3 of the Ninth Army in the European Theater in World War II.

索尔将组建的&D特遣队&交给了他的副师长指挥，即阿米斯特·D·&瑞德&米德准将，一名积极进取的西点军校毕业生，他曾经在二战期间的欧洲战场上担任过第9军的作战参谋。

Two days after bone marrow MSCs compounded to nano-CS/COL scaffold, bone marrow MSCs presented globular shape and were scattered; Four days later, bone marrow MSCs presented shuttle shape, extended and anchored on the surface of nano-CS/COL by pseudopods; Eight days later, bone marrow MSCs proliferated and fused each other, and they secreted a lot of extracellular matrix, then which covered most material particles.

骨髓基质干细胞复合到纳米壳聚糖-胶原纤维支架后2 d，细胞呈球形散在分布；4 d 后细胞呈梭形，延展爬行且有伪足与材料表面锚靠；8 d 时细胞增殖，相互间融合，并有大量的细胞外基质分泌，大部分材料颗粒被覆盖。

France, Ecole Nationale Superieure d'art de Nancy, Diplome National d'Art Plastique

法国，法国Nancy南鍚美术学院，造型艺术文凭D.N.A.P

Results The tail formation rate of model group was significantly higher than the rate of control group (P＜0.05) with a large number of Ⅲ and Ⅳ DNA damage cells. The tail formation rate of dichloromethane extraction groups were both significantly lower than the rate of model group (P＜0.05). p53 mRNA expression of model group was higher than the rest except the crude Cornus Officinalis group.

结果 D-半乳糖致衰模型组小鼠骨髓细胞DNA拖尾率高于正常对照组(P＜0.05)，且Ⅲ、Ⅳ级损伤细胞数较多；山茱萸生品及制品二氯甲烷萃取部位组小鼠骨髓细胞DNA的拖尾率均低于D-半乳糖致衰模型组(P＜0.05)。D-半乳糖致衰模型组小鼠骨髓细胞p53基因的表达高于正常对照组、阳性药组及制品组。

The hFCECs were cultured by sticking tissues piece method that the cornea were divided into the limbus and central tissue piece and digestive method,respectively.For digestive method,the digestive juice of 5mg/ml DispaseⅡ+0.25%trypsin was chosed.D/F12 with 10%fetal bovine serum and 100 U/ml penicillin and streptomycin were used in this study,the culture condition was 37℃and 5%CO2,and culture medium changed every three days2、Passage of hFCECsAfter more than 80%confluenced,cells from corneal limbus hFCECs were digested for 5-15min with different concentrations of trypsin/EDTA at 37℃,and then passaged at a ratio of 1:2.The cells were subcultured on empty plates,mouse 3T3 fibroblast feeder layer,fetal corneal stromal cell feeder l ayer or HTK feeder layer respectively.And D/F12, mouse 3T3 fibroblast conditioned medium,fetal corneal stromal cells conditioned medium or HTK conditioned medium with 10%FBS and 100 U/ml penicillin and streptomycin were used respectively as the culture medium.And the culture medium were changed every three days as well.

方法一、人胎儿角膜上皮原代和传代培养1、原代培养严格无菌操作获取人胎儿角膜片，采用组织块贴壁法、酶消化法原代培养人胎儿角膜上皮细胞。2、传代培养角膜缘部的细胞生长融合达80%以上，不同稀释浓度的胰酶/EDTA消化液消化传代分别接种于空板、小鼠3T3成纤维细胞饲养层、胎儿角膜基质细胞饲养层及HTK饲养层，培养液分别采用D/F12、小鼠3T3成纤维细胞条件培养液、胎儿角膜基质细胞条件培养液、HTK条件培养液。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。