查询词典 nuclei

Radioactive decay studies have found a kinds of elements can be α or β decay and the decay into another element, while the α-decay product of -α-rays became one of the deep structure of the material means of .1911, the Rutherford and others bombarded atoms with α-rays observed wide-angle deflection to determine the nuclear structure of atoms and nuclei was first proposed the term .1919 year, Rutherford and others have also found that with α-ray bombardment of nitrogen will release the nuclear protons, this is the first time Artificial realization of a nuclear reaction, after the bombardment of nuclei with the radiation caused by nuclear reaction method to become the primary means of research in nuclear.

放射性衰变研究发现了一种元素可以通过α衰变或β衰变而变成另外一种元素，而α衰变的产物——α射线又成了人们探讨物质深层结构的手段。1911年，卢瑟福等人用α射线轰击原子、观察到大角度偏折，从而确定了原子的有核结构，并首次提出原子核这一名词。1919年，卢瑟福等人又发现用α射线轰击氮核会放出质子，这是首次用人工实现的核反应，以后用射线轰击原子核来引起核反应的方法逐渐成为研究原子核的主要手段。

Objective To explore the morphological characteristics of the microvasculature of cerebellar dentate nuclei and medullae around nuclei of infants.

目的观察幼儿小脑齿状核及周围髓质微血管的形态学特点。

Barley seeds were irradiated with five different doses of 60 Co-γ ray.There were many kinds of chromosome aberration in pollen mother cells,such as bridge,laggards in anaphase I and anaphase II,asymmetrical division in anaphase I and asynchronous division in anaphase II,ring quadrivalent in metaphase I,three pole division and micro-nuclei in telophase I,micro-nuclei in tetrad and some micro-nucleus separates from the tetrad to form polyad.

大麦种子经5种不同剂量γ射线辐照后， M1植株的花粉母细胞出现多种染色体畸变类型，例如后Ⅰ、后Ⅱ中出现桥、落后，后Ⅰ中出现不对称分裂，后Ⅱ中出现不同步分裂，中期Ⅰ出现环状四价体，末期Ⅰ中有三极分裂和微核，四分体中出现微核且有的微核独立于四分体，从而形成多分体。

The sloping plate can provide sufficiently the under-cooling for nucleation and lay a foundation for heterogeneous nucleation to form lots of nuclei of crystal internally and on the sloping plate surface, thus causing the melt to nucleates eruptively. Under the action of both metal flow and vibration, the nuclei formed on the sloping plate surface can move freely and disperse into the melt, and they are able to maintain the direct growth in spherical shape in the homogeneous composition and temperature fields.

倾斜板为形核提供足够大的过冷度和异质形核基础，大量晶核在斜板表面和内部形成，使熔体爆发形核，在流动和振动作用下斜板表面形成的晶核游离，弥散到熔体内部，晶核在均匀的成分场与温度场条件下，可以保持直接球状生长。

When Tetrahymena, Euglena, Crypthecodinium and Oxyrrhis were stained with the same technique, although all the nuclei gave positive reactions, no precentromeres could be distinguished; within nuclei there were only patches composed of minute fluorescent spots seen.

在对小眼虫和寇氏隐甲藻作制备核骨架的细胞分级抽提处理后，细胞核仍还都呈阳性反应。这表明与高等真核生物的相似，低等真核生物的着丝粒蛋白也是与核骨架紧密结合的。

Under the light microscope, we found that transfected SGC7901 gastric cancer cells with NHE1 antisense gene were larger with abundant cytoplasm and comparatively same size of nuclei, and the ratio of nuclei to cytoplasm, mitotic count and heteromorphism decreased when they were compared with their parent cells.

与亲本细胞相比，光镜下NHE1反义基因转染的SGC7901胃癌细胞胞体增大，胞质丰富，核大小相对一致，核质比和核分裂象减少，异型性减少。

Our preliminary results showed that E18 existed first in the nuclei in the form of microvesicle-the intranuclear membrane structure and it might be transported into the nuclei through the interaction with another AcMNPV envelope protein-ODV-E66, the latter has been reported containing a 23-amino-acid sequence which is sufficient to direct reporter proteins to nucleus.

研究结果表明，E18是先以核内模结构——微泡的形式存在于核内的；一个被报道具有核定向转运功能的AcMNPV囊膜蛋白－ODV－E66能与E18形成紧密的复合体，推测E－66可能在E18的核定向转运中起着运载体的作用。

A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy.

核子相互结合形成更大的核子并伴随能量释放的一种核反应过程。

Physics A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy.

核聚变：一种由原子核结合成更大的核，同时释放出能量的核反应

OBJECTIVE: To investigate a simple easy method for isolation of cell nuclei, and to provide a great quantity of active cell nuclei for studying neuronal nucleus transplantation, cell isolation-fusion and nucleus composition.

目的：探索简单易行的分离细胞核的方法，为神经元细胞核移植、细胞拆合以及细胞核成分的研究提供大量完好有活性的细胞核。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。