扬州、无锡两地男性STD6种支原体感染研究

目的 :我们研究了扬州和无锡两地区男性STD患者解脲脲原体 (Uu)、人型支原体 (Mh)、肺炎支原体 (Mpn)、生殖支原体 (Mg)、发酵支原体 (Mf)、穿通支原体 (Mpe)等支原体感染状况。 方法 :应用nestedPCR(nPCR)和DNA全自动测序技术对扬州和无锡地区的各 5 6例男性STD者的尿道拭子进行Uu、Mh、Mpn、Mg、Mf、Mpe等 6种支原体联合检测。 结果 :扬州地区男性STD者Uu、Mh、Mpn、Mg、Mf、Mpe阳性率分别为 6 9 6 %、35 7%、2 8 6 %、16 1%、3 6 %和 3 6 % ;无锡地区则为5 5 4%、32 1%、5 4%、5 4%、1 8%和 0 % ,二地区均存在多种支原体合并感染。结论 :本文认为扬州和无锡地区男性STD患者中都有较高的支原体感染率 ,特别是在国内首次从STD者的尿道拭子中通过nPCR法检测到穿通支原体     

基于MSP430F148和CC1100的无线血氧指夹的设计

血氧饱和度探头是对人体基本生理参数进行实时监测的仪器。本设计使得该探头具有实时监测及显示血氧饱和度功能。本文围绕无线血氧指夹的实现和应用两个方面,介绍本设计的软硬件实现方法及设计的应用。     

Local SAR reduction in parallel excitation based on channel-dependent Tikhonov parameters

Purpose

To reduce the local specific absorption rate (SAR) obtained with tailored pulses using parallel transmission while obtaining homogenous flip angle distributions.

Materials and Methods

Finite‐element simulations on a human head model were performed to obtain the individual magnetic and electric field maps for each channel of a parallel transmit array. From those maps, SAR calculations were carried out for “spoke” pulses designed to homogenize the flip angle in an axial slice of a human brain at 7 T. Based on the assumption that the coil element nearest to the maximum local energy deposition is the dominant contributor to the corresponding hot spot, a set of channel‐dependent Tikhonov parameters is optimized. Resulting SAR distributions are compared to the ones obtained when using standard pulse design approaches based on a single Tikhonov parameter.

Results

In both the small‐ and large‐tip‐angle domain, the simulations show local SAR reductions by over a factor of 2 (4) for a well‐centered (off‐centered) head model at the expense of roughly 1% increment in flip‐angle spread over the slice.

Conclusion

Significant SAR reductions can be obtained by optimizing channel‐dependent Tikhonov parameters based on the relation between coil elements and SAR hot spot positions. J. Magn. Reson. Imaging 2010;32:1209–1216. © 2010 Wiley‐Liss, Inc.     

Making space for a fourth,unplanned child with the help of the observer's holding and receptive capacity

Creating a space for more than one child is a challenge for the mother that already has other children at a pre-school age. The present case study was carried out based on a research application of the Bick method of infant observation. The baby and his family were observed weekly, for 12 months. He belonged to a family, consisting of a mother, a father and their four boys, a baby and three siblings aged two, three, and four years old. The mother gradually created a space for welcoming the observer as well as the baby. The observer′s countertransference reactions were essential and the receptiveness of the observer enabled the mother to use her for expressing her feelings albeit silently.