取样

Conventionally, computing the discrete Fourier transform that is equivalent to sampling of the z transform of the input sequence at equally spaced angles around the unit circle.

在以往，我们计算离算傅立叶转换相当於在z平面的单位圆上均匀的取样，然而，在某些应用上，非均匀的取样会更有效率。

It will help if you take a fresh sample of cloacal excretion for a veterinarian to examine under the microscope.

任何炎症的出现都需要兽医立即进行医学方面的检查，常规的手段是组织取样或粪便取样，必要的时候需要进行粪样镜检。

51 Culturable medium-temperature bacteria were isolated by using cultivation method from the Taohuajiang River.

细菌数量在取样点26号、32号、33号、38号、42号和43号较多(约10~5 cfu／mL)，在取样点9号、14号、20号、31号和35号较少(约10~3 cfu／mL)。

Epithelioid granuloma detection increased with the number of endoscopic sampling procedures; sampling site had no influence.

检测到的上皮样肉芽肿随内镜下取样操作次数的增多而增多，不受取样部位的影响。

This dissertation, based on (1) field investigations and observation along Jiangsu coastal environment (including: sea bottom and tidal flat sediment sampling, water depth, salinity, current velocity and direction, core drilling and so on);(2) integrative laboratory analyses of micropalaeontology, sedimentology and computer-processed mathematical statistics on over 300 samples and about 100 thousand foraminifera tests, try to find and formulize the relations between foraminiferal thanatocoenose and environment.

本文的写作基础是：通过野外进行的海岸环境调查和测量（主要调查项目有：水深、盐度，流速、流向、含沙量、底质采样、浅地层地震剖面仪探测、潮滩钻孔取样、潮滩探槽的挖掘与沉积物取样、观测等等）取得了环境参数和大量样品；在实验室运用微体古生物学、沉积学、数理统计与计算机分析相结合的方法，对所采集的现代表层沉积物和钻孔岩芯样品共计三百多个进行了分析研究，鉴定统计有孔虫标本十万余枚，研究有孔虫埋葬群特征与环境参数之间的定性-定量关系。

Degradation test in vitro was carried out in phosphate buffer solution (0.1M, pH7. 4) at 37 ℃. The buffer solution was changed daily. Degradation test in vivo was implanted the sample to subdermal in adult ICH rat in the scapular area lateral to the dorsal midline. At suitable time the samples were recovered. Molecular weight changes in surface layer and bulk of polymer sample were measured by GPC and weight loss was determined gravimetrically. It was found that the degradation behavior can be regulated by changing the composition of copolymers. The critical compositions from surface to bulk degradation behavior for PGCA, PLCA, PLMCA, PLDCA systems were 15-20, 20-30, 30- 40, 40 of mol percent GA or LA unit in copolymers, respectively. The degradation behavior of PGCA, PLCA, PLMCA, PLDCA systems were compared and analysed. Some factors influencing the degradation character, such as copolymer composition, hydrophobicity, crystallinity and enzyme affect etc. played important role.

体外实验中材料降解环境为37℃，0.1M，pH7.4磷酸缓冲溶液，每天换液，定期取样；体内实验中将聚合物试样埋置于ICH小白鼠背部肩胛骨皮下部位，定期处死小鼠，取样，将体内体外样品进行重量损失及试样内外层分子量变化测定，分析各聚合物试样降解行为特性，实验结果证明，改变共聚物组成，可以调节各聚合体系降解行为特性，对PGCA，PLCA，PLMCA，PLDCA共聚体系，交酯摩尔百分含量15-20％，20-30％，30-40％，40％分别为各体系内降解行为特性由表面降解型向本体降解型过渡的临界转折点，交酯含量较低的聚合物不同程度地表现表面降解行为特性，论文对各共聚体系体内外降解行为作了分析对照，例如共聚物组成对材料降解速度与降解行为的影响；生物体内酶对降解行为的影响；材料亲疏水性，聚合物链段结晶行为及碳酸酯结构对材料降解行为的影响等，得出交酯/环碳酸酯共聚体系降解行为一些共性和规律。

The method of scanning sample and targetting sample were combined to record and observe the change of behavior and the behavior lasting time of Equus hemionus in the region.

野外观察采用扫描取样法和目标取样法相结合记录收集观察区域内蒙古野驴的各种行为及行为持续时间。

Other meat quality items such as ribeye area, water absorption capacity, the diameter, area and density of muscle fibre, the amount of muscle fibre in histology, vitamin B^inosine, inosinic acid imp, dissociative glutamine, were measured at the same site, namely, the muscle on 12th-13th rib.

在12～13胸肋背最长肌处测定眼肌面积、滤纸吸水力，并在同一部位取样取样测定肌纤维面积、肌纤维直径、肌纤维密度、肌束内肌纤维根数、硫胺素、肌苷、肌苷酸和游离谷氨酸钠等各项指标。

Meanwhile, it was found out that the sample quality collected with fast irruptive is slightly better than sample's quality collected by upper irruptive.

同时发现，钻孔快速冲入取样质量略好于上部击入取样质量。

Non-invasive sampling is a useful tool for genetic analysis of endangered species,but it is often inapplicable due to the low quality and quantity of DNA obtained.In order to explore a method for extracting DNA from specimen of bird,we tried to extract DNA from dried skin of birds.We extracted total DNA of the koklass specimens successfully.

20世纪80年代以来，由于PCR技术的广泛应用，已经能对极少量遗传物质进行检测，由此产生了一类新的取样方法——非损伤性取样[1]，即在不伤害或触及动物的前提下收集脱落的毛发、粪便、口腔脱落细胞、陈旧皮张等作为分析样品，进行遗传学分析。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。