起源于...

It is effective and safe to ablate IVT from His-Purkinje system during sinus rhythm

窦性心律下射频消融起源于希蒲系统IVT安全、有效。

All of these patients underwent plain and contrast-enhancement CT scan. Results: Thirteen cases included 5 neurilemmomas (3 malignant cases included), 5 neurofibromas, 1 neuroblastoma, 1 ganglioneuroma, 1 malignant paraganglioma. In the 13 cases, 2 cases derived from plexus sacralis, 2 cases located in the pelvic peritoneal space, 6 cases located in the pelvic extrapentoneal space, and 3 cases located in the vesica extraperitoneal space.

结果：神经鞘瘤5例（其中恶性3例），神经纤维瘤5例，神经母细胞瘤1例，节细胞性神经瘤1例，恶性副节细胞瘤1例。2例起源于骶丛，经由骶孔向盆腔内生长；2例起源于盆腔，其中1例源于膀胱，1例位于膀胱直肠陷窝；直肠腹膜外间隙6例；膀胱腹膜外间隙3例。

First, miRNAs derive from genomic loci distinct from other recognized genes, whereas siRNAs often derive from mRNAs, transposons, viruses, or heterochromatic DNA.

第一，微小RNA 起源于明显不同于其他识别基因的基因位点，而小型干扰RNA通常起源于信使RNA、转座子、病毒或异染色质的 DNA。

Athena's name is possibly of Lydian origin.It may be a compound word derived in part from Tyrrhenian "ati", meaning "mother" and the hame of the Hurrian Goddess "Hannahannah" shortened in various places to "Ana". In Mycenaean Greek, She possibly appears in a single inscription in the Linear B tablets: A-ta-na-po-ti-ni-ja /Athana potniya/ appears on a text from the Late Minoan II-era "Room of the Chariot Tablets" in Knossos, the earliest Linear B archive anywhere.

雅典娜这个名字可能起源于利底亚，它是由第勒尼安语中的&ati&和胡里安人的女神&Hannahannah&名字的简化&Ana&拼合而成，在迈锡尼文明时期，起源于米诺斯王朝后期，位于科诺索斯的&战车铭文之室&的一则铭文中，雅典娜也许是以&A-ta-na-po-ti-ni-ja /Athana potniya&这个名字出现的。

The average percent value of G C (49.3%) was less than that of A T (50.7%), there was a bias of the content of G, T in the third codon; The number of transition G-A and T-C were 22, 15 respectively, which were higher than that of transition A-G and C-T, the number of tranversion C-A, T-G is 2 respectively, and other tranversion patterns didnt occur; the probability of transition was higher than that of tranversion , Ts/Tv = 9.5-19, there was the highest number of transition in the third codon. The gamma parameter a of the lst,nd and 3rd codon positions were 0.00572,0.01237 and 1.05239 respectively, they showed that there was adifferent substitution rate at different codon position. Frequences of synonymous codon usage were relatively biased. The average rates of synonymous and nonsynonymous substitution were 0.0787, 0.0011 respectively, there was a significant difference between dS and dN (Z = 4.713, p.01), and the low ratio( CD = 0.0284 .3) of dN/dS ratio impled that there were selective constraints against the nonsynonymous sites in cyt-b gene, The distribution of nonsynonymous codon substitution pattern related to Grantharm distance indicated that the purified selection at 2nd codon positions was more intensive than that at 1st codon positions. The phylogenetic trees supported the view of the double origin of Chinese goose, which means that domestic Chinese goose was derived from Anser cygnoides and domestic European goose, and Yili was derived from Anser anser.

碱基含量分析可知，序列的G C含量(49.3％)＜A T含量(50.7％)，密码子第三位点的G、T含量都有较强的偏倚性；序列间G→A和T→C的转换数(22次和15次)高于A→G和C→T的转换数(10次和9次)，C→A、T→G颠换数均为2次，其余颠换模式均未发生；转换数明显高于颠换数，Ts／Tv=9.5～19，密码子第三位点的转换数最高，呈现了相当强烈的转换偏倚性；密码子第一、二和三位点的gamma分布参数α值分别为0.00572、0.01237和1.05239，表明密码子第一位点的替换速率变异最大，第二位点次之，第三位点的替换速率变异相对较小；编码同一氨基酸的同义密码子并非随机使用，表现出一定程度的使用偏倚性；同义替换速率和非同义替换速率分别为0.0787和0.0011，dS与dN值间的差异极显著(Z=4.713，p＜0.01)，而ω=0.0284，明显小于0.3，表明雁属鹅细胞色素b基因序列经历了中度净化选择作用；单步非同义替换(Sing-step nonsymonymous codon substitution，SSNCS)分布模式与Grantharm距离之间的关系说明密码子的三个位点所受的净化选择强度不同；构建的最大简约树与邻接树拓扑结构一致，支持中国家鹅的双起源学说，即除伊犁鹅外的其它中国鹅品种起源于鸿雁，伊犁鹅和欧洲的郎德鹅、莱茵鹅起源于灰雁。

The Chinese ancient theatrical costume 's genesis relates to the origins of the Chinese Ancient Drama and the Chinese ancient clothing. Since the Chinese Ancient Drama comes of the primitive men 's roll playing and the Chinese clothing comes of the primitive men 's dressing themselves up. So the Chinese ancient theatrical costume comes of the primitive men 's primping up themselves for roll playing.

中国古代戏剧服饰的起源与中国古代戏剧和中国古代服饰的起源都密切相关，戏剧起源于原始人的角色扮演，服饰产生于原始人对自身的装饰，因此，中国古代的戏剧服饰起源于原始人通过装饰自身而进行的角色扮演。

Anatomise configuration study showed that the adventitious shoot and somatic embryogenesis originated from surface layer cells of the calli fomed in hypocotyl organogenesis.

细胞学观察结果表明：不定芽和体细胞胚起源于胚轴形成的愈伤组织表层；不定根起源于愈伤组织内部。

Some believe that it derives from the name of a musician, either a dancing slave named Jasper from New Orleans circa 1825, or a late-nineteenth century Vicksburg, Mississippi drummer named Charles "Chas" Washington, or a Chicago musician named Jasbo Brown.

一些人认为它起源于某个音乐家的名字，可能是1825年新奥尔良市马戏团一个叫爵士帕的舞蹈奴隶；或者是起源于十九世纪晚期密西西比州维克斯堡一个鼓手的名字，其名为查尔斯。

Speculating on the origin of Gaultheria, two different hypotheses were suggested, one of Gondwanan origin, and the other of Laurasian origin.

关于白珠树属的起源问题存在两种不同的推测：一种观点认为该属起源于南半球的冈瓦纳古陆；另一种观点则认为其起源于北半球的劳亚古大陆。

The results demonstrated that the dup(p21) and the del(p11) were of paternal origin and i was of maternal origin. The dup(p21) arose from an unequal sister chromatid exchange. The del(p11) occurred through X chromosom e breakage and deletion machanism.

结果表明，dup(p21)和del(p11)起源于父方，而i起源于母方。dup(p21)是由X染色体姊妹染色单体不均等的互换所引起的，del(p 11)是由于X染色体断裂后丢失所致，i的发生是由于卵母细胞X染色体着丝粒错分裂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。