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.

放射性衰變研究發(fā)現(xiàn)了一種元素可以通過α衰變或β衰變而變成另外一種元素，而α衰變的產(chǎn)物——α射線又成了人們探討物質(zhì)深層結構的手段26uuu人妻无码。1911年(无码视频)在线作爱，盧瑟福等人用α射線轟擊原子、觀察到大角度偏折Jizz18处，從而確定了原子的有核結構色色色色色色色色色色色色网，并首次提出原子核這一名詞。1919年亚州黄色网址，盧瑟福等人又發(fā)現(xiàn)用α射線轟擊氮核會放出質(zhì)子亚洲一级爱做视频，這是首次用人工實現(xiàn)的核反應，以后用射線轟擊原子核來引起核反應的方法逐漸成為研究原子核的主要手段国产丝袜调教a片免费视频。

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

目的觀察幼兒小腦齒狀核及周圍髓質(zhì)微血管的形態(tài)學特點欧美图片性爱视频。

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.

大麥種子經(jīng)5種不同劑量γ射線輻照后， M1植株的花粉母細胞出現(xiàn)多種染色體畸變類型欧美日韩乱码视频夫妇野外，例如后Ⅰ亚洲激情毛片网站、后Ⅱ中出現(xiàn)橋、落后在线看网址，后Ⅰ中出現(xiàn)不對稱分裂日韩黄色激情视频，后Ⅱ中出現(xiàn)不同步分裂，中期Ⅰ出現(xiàn)環(huán)狀四價體免费精品无码人妻夜多侵犯AV，末期Ⅰ中有三極分裂和微核午夜粉嫩粉嫩，四分體中出現(xiàn)微核且有的微核獨立于四分體，從而形成多分體亚洲一级黄色。

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.

傾斜板為形核提供足夠大的過冷度和異質(zhì)形核基礎亚洲一区精品劲爆儿视频，大量晶核在斜板表面和內(nèi)部形成，使熔體爆發(fā)形核亚洲久怡红院，在流動和振動作用下斜板表面形成的晶核游離国产又爽又黄又湿的视频，彌散到熔體內(nèi)部，晶核在均勻的成分場與溫度場條件下日AV网站，可以保持直接球狀生長欧美区精品视频。

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.

在對小眼蟲和寇氏隱甲藻作制備核骨架的細胞分級抽提處理后，細胞核仍還都呈陽性反應一区二欧美无遮挡黄片。這表明與高等真核生物的相似人人cao96，低等真核生物的著絲粒蛋白也是與核骨架緊密結合的。

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.

與親本細胞相比一级一级黄，光鏡下NHE1反義基因轉(zhuǎn)染的SGC7901胃癌細胞胞體增大www.669aaa.com，胞質(zhì)豐富，核大小相對一致国产青榴社区久久精品，核質(zhì)比和核分裂象減少操摸插人人，異型性減少欧美又大又粗高潮视频欧。

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.

研究結果表明，E18是先以核內(nèi)模結構——微泡的形式存在于核內(nèi)的直接看的av网站免费观看；一個被報道具有核定向轉(zhuǎn)運功能的AcMNPV囊膜蛋白－ODV－E66能與E18形成緊密的復合體成年人视频免费在线看，推測E－66可能在E18的核定向轉(zhuǎn)運中起著運載體的作用。

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

核子相互結合形成更大的核子并伴隨能量釋放的一種核反應過程在线观看播放国产日韩视频。

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

核聚變：一種由原子核結合成更大的核久久国内精品，同時釋放出能量的核反應

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：探索簡單易行的分離細胞核的方法，為神經(jīng)元細胞核移植欧美性爱视频黑白配、細胞拆合以及細胞核成分的研究提供大量完好有活性的細胞核黄视频在线品。