磁性

The variables in controlling the flow of microfluids are voltage and time. This study adopted the method of fast measurements、so time taken for applying voltage did not exceed ten minutes. If voltage is not carefully controlled、the microchannel may be damaged at the particle flow. During measurement、a buffer fluid with a concentration of 0.1 M was used、the current was sufficient to propel the magnetic particles through the microchannel without damage from excessive voltage. The maximal amount of microfluid particles at the junction of the separation and injection channels was obtained with a time of 5 mintures and voltage of 200V.

藉由改变不同的电压和时间来观察颗粒在微流体中的移动情形，由於这个研究是以快速检测为原则，所以将时间控制在10分钟之内；在电压的控制上面如果电压太大的话将会对微流体的管道造成损伤，降低微流体装置的寿命，并且也有可能会对里面的颗粒造成影响，所以缓冲液的浓度使用比较大的0.1 M，这样所产生的电流将足以推动磁性颗粒并且电压不会太大也不会造成管壁的伤害。

It is stressed introducing development and application of SPS in preparing functionally gradient material, thermoelectricity material, ferroelectric material, magnetism material, composite, noncrystal alloy, shape memory alloy, diamond and nanometer material etc.

重点介绍了SPS在制备功能梯度材料、热电材料、铁电材料、磁性材料、复合材料、非晶合金、形状记忆合金、金刚石和纳米材料等领域的应用情况和进展。

Liver ; stem cells ; transplantation ; superparamagnetic iron oxid ; magnetic resonance imaging

肝； 干细胞；移植；超顺磁性氧化铁；磁共振成像

AIM: To label bone marrowderived stem cells with superparamagnetic iron oxid and to explore the image characteristics and signal attenuation rules of in vivo the magnetic resonance imaging of the labeled cells in rabbit liver.

目的：探讨超顺磁性氧化铁标记骨髓干细胞的方法和标记细胞在肝脏内的磁共振活体成像特点和衰减规律。

Once delivered to the heart, injected cells are difficult to distinguish from target tissue by MR in vivo.To specifically imaging injected cells in MR, the recent investigation generally using superparamagnetic iron oxid to label MSCs, which should enable serial tracking and quantification of MSC transplantation noninvasively by MR.

由于MR成像无法区分移植细胞和靶组织细胞，为使移植细胞能在MR上特异性显示，目前广泛使用超顺磁性氧化铁(superparamagnetic iron oxid， SPIO)作为负性标记物标记移植细胞，进行MR体外和活体内的成像研究。

The magnetic resonance tomograph costing approximately seven million Euros and weighing 35 tonnes was delivered to its new location, the Experimental and Clinical Research Center of the Max Delbrück Center for Molecular Medicine in Berlin-Buch on 11th September.

这台造价约为七百万欧元、重达35吨的磁性共振层析X光摄像仪于9月11日被运送到柏林Max Delbrück分子医学研究中心的实验性临床研究中心。

The first and second magnetic elements (51, 52) are suitable for aligning their magnetisation direction with magnetic field lines of an externally applied magnetic field exceeding a detection threshold value.

所述第一和第二磁性元件(51，52)适合于将它们的磁化方向对准超过检测门限值的外加磁场的磁力线。

The results show that Fe0.13[Co20Ni80]0.87 alloy fibers are characterized with thin diameters between 0.3 and 2.0 μm, with high aspect ratio, dense and smooth surfaces. The crystalline size of the alloy fibers are mainly influenced by the thermal reduction temperature and are in the range of 20 to 50 nm with a corresponding reduction temperature range of 300 to 700 ℃. The magnetic properties of the alloy fibers are largely affected by the carbon content and crystalline sizes of the alloy fibers. With increasing thermal reduction temperature, the coercivity decreases while the saturation magnetisation value of the alloy fibers dramatically increases at lower reduction temperatures. The alloy fibers prepared at reduction temperature of 700 ℃ have a saturation magnetisation value of 120 Am2/kg and a coercivity value of 10.4 kA/m, respectively.

结果表明：Fe0.13[Co20Ni80]0.87合金纤维的直径为0.3~2.0 μm，表面光滑、长径比大；组成合金纤维的晶粒大小与还原温度密切相关，当温度为300~700 ℃时，晶粒尺寸由约20 nm增加到约50 nm；该合金纤维显铁磁性，其矫顽力主要受合金中C含量及晶粒大小的影响，随制备温度的升高而降低；饱和磁化强度则主要与合金的组分相关，随还原温度的升高和合金纯度的提高而增大；经700 ℃热还原后，合金纤维的饱和磁化强度 m s为120 Am2/kg，矫顽力 H c为10.4 kA/m。

The material is 48H,50M,39UH,35EH to be produced in batch .we can produce magnet 80 tons per month at present .the products is DISC magnet of motor ,cup magnet of vacancy ,VCM magnet ,speaker magnet in mobile ,Nuclear magnetic resonance etc ,flexbile magnet have magnet piece/mount PVC/two sides glue、anisotropic plastic magnet、plastic soft magnet、magnet strip/mount tow sides glue、magnetise printed paper etc,product to be can printed or pvc on no-magnetic side directly、mount tow sides gluethis product can processed according to custom,for example

主要常见产品有扁平电机磁钢，空心杯磁钢，UCM磁钢，手机受话器磁钢，核磁共振磁钢等等各类电子产品零配件；橡塑磁有磁片/裱pvc/双面胶、异性橡塑磁、橡塑软磁片、挤出磁条/裱双面胶、磁性打印纸等，产品可直接在无磁面上印刷或在裱在无磁面上的pvc上印刷、无磁面裱双面胶（这种产品客户可自己加工，比如贴彩纸），另外一面是充磁面，它直接可粘在带铁的东西上面(比如汽车、冰箱、或展架等)，使用起来比较方便、简单。

Smiles are magnetic .they draw people together.

微笑是有磁性的，它将人们吸引在一起。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。