Objective To investigate daytime and nighttime variation of heart rate variability(HRV)in patients with obstructive sleep apnea syndrome(OSAS), and to evaluate the screening capacity of HRV.

目的研究阻塞性睡眠呼吸暂停综合征（OSAS）患者心率变异性（HRV）昼夜变化，探讨利用HRV指标筛选OSAS的效果。

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Other uses of microarrays include the screening of large numbers of molecules for their capacity to bind a particular target protein.

其它微点阵的用途包括从大量分子中筛选出能结合特定靶蛋白的分子。

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Frequency screen is a new high efficiency machine and has the advantages of electromagnetic vibration, high frequency, high capacity and high screening efficiency.

复频筛是一种新型高效的筛分设备，具有电磁振动、高频率、设备处理能力大、筛分效率高等优点。

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As a result of the lack of policy mandates and capacity to fully test chemicals as they come to market, complete toxicological screening data are available for only 7 percent of the more than 84, 000 chemicals currently registered for use.

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Equipment ordered during the third quarter included two concrete batch plants and associated crushing and screening plants, and also the first phase of the power plant, including three gas turbines with a combined capacity of 120 megawatts, Thomas said.

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