生物差异

Features and innovations in this study:(1) Longest successive time scale of Precambrian samples is studied;(2) The environmental and biological significances of the difference between . the carbon isotopic compositions of kerogen and coexisted carbonate were discoved;(3) The difference of biogeochemical processes between Proterozoic closed and open sea system was considered in the disccussion;(5) It is first time to carry out the chemolysis and thermolysis of kerogen in Precambrian organic matter research.(6) It is first time to apply molecular organic geochemical data to the reconstruction of Proterozoic Rodinia Supercontinent.

此项研究具有以下特色和创新之处：(1)研究对象连续时间跨度最长；(2)研究内容涉及面较全面；(3)较早详细探讨了前寒武纪沉积有机质的分子特征与古环境和生物群落的演化关系；(4)独立推导和论证了δ〓C〓和δ〓C〓的差值的生物和环境的重要意义；(5)在前寒武纪有机质研究中区分了局部封闭环境下的生物地球化学循环过程与广域海环境下的生物地球化学过程的差异；(6)开展了前寒武纪干酪根化学和热降解研究；(7)开创性地将分子有机地球化学的数据应用于元古宙Rodinia超大陆的重建中。

The influence of oligosaccharides biocide on bacterial colony in the stem of Chinese Cotton 12 was determined by routine separation mathod.The results of two groups experiments indicated that the number of bacterial colonies in the cotton stem,wtich were treated with the oligosaccharides,was lowerthan the control group;and it dropped significantly(8.0×107CFU/g)after treating 10 days,while the control group was 4.2×109CFU/g.This results illustrated that the oligosaccharides biocide could control the cotton damping-off,and as a equaled 0.05,the oriental difference was significant.

通过常规分离方法，测定寡聚糖生物农药对中棉12品种的棉茎体内细菌群落数量的影响。2批实验结果表明喷寡聚糖后棉茎体内细菌群落数量均低于对照，喷寡聚糖10 d后棉茎体内细菌群落数量显著下降(8.0×107CFU/g)，对照4.2×109CFU/g；寡聚糖生物农药对棉花苗期病害的防治效果实验结果表明：寡聚糖生物农药对棉花苗期立枯病有一定的防治效果，且在α=0.05水平差异显著。

The results indicated that the highest NAIs concentration was distributed 5 cm far in front of the mask, and the NAIs concentration was decayed with the distance to the ionizer. The NAIs concentration also decayed on the mask surface due to electric neutralization.

首先探讨空气负离子在呼吸范围中的分布状况以及对四种生物气胶的控制效率分布，进而比较四种生物气胶控制效率的差异，最后探讨空气负离子稳定度对生物气胶控制效率的影响。

Experiments were conducted to measure the impact of biofouling on the growth and reproduction of pearl oyster Pinctada martensii.

主要研究定期清除污损生物的合浦珠母贝与不清除污损生物的合浦珠母贝在生长及繁殖上的差异，用以说明污损生物对合浦珠母贝的生长及繁殖的影响。

An effective and simple method for total RNA extraction from rhizobium was described in this paper. The method had the acquirement of high RNA yields and was less expensive than other methods previously described.

0前言提取高纯度、完整的总RNA是对基因进行转录水平操作的基础，但不同生物往往因种属差异、材料内含物组份及含量的差异，而需要采用不同的RNA提取方法，对细胞组成成分复杂的生物物种，RNA的提取相对困难得多。

Many critics draw an intellectual link between sociobiology and biological determinism, the belief that most human differences can be traced to specific genes rather than differences in culture or social environments.

许多批评者认为社会生物学和生物决定论之间存在理性的联系。生物决定论认为，大多数人类的差异可以追溯到具体的基因，而不是追溯到文化差异或社会环境差异。

When the frequency of codon usage of citrus was compared to Homo sapiens, Drosophila melanogaster, Saccharomyces cerevisiac and Escherichia coli, we found that the codon preference is considerably different between citrus and non-plant species. While compared to Arabidopsis thaliana, Lycopersicon esculentum, Oryza sativa and Musa acuminata, we found that the codon preference was identical in dicotyledons, but was different between citrus and monocotyledon, Oryza sativa and Musa acuminate.

将柑橘的密码子使用频率与人、果蝇、酵母和大肠杆菌等不同种类模式生物比较后发现，柑橘密码子的偏爱性与不同种类生物有不同程度的差异；但将柑橘的密码子使用频率与拟南芥、番茄、水稻和尖叶蕉等不同种类的植物相比，发现柑橘密码子的偏爱性与同为双子叶植物的拟南芥、番茄完全一样，而与水稻、尖叶蕉这2种单子叶植物均有较大的差异。

In addition, by calculating the bioaccumulation factor, the result shows that bioaccumulation ability of the Phragmites australis varies among the tissues, and the bioaccumulation ability of the root tissue that is prone to accumulate Pb and Cd is much higher than the stem and leaf tissues which are easy to concentrate Pb.

生物富集系数的计算结果显示，芦苇不同组织对有毒重金属元素的生物富集能力存在较大差异，根组织的生物富集能力最大，且容易富集Pb和Cd；而茎、叶组织的生物富集能力较低，易富集Pb。

This thesis is to discuss the influence of the biological sex and social gender on the gendered speech and tries to explain that the social value and living environment of the individuals play an important role in the formation of the gendered speech.

男女两性的语言差异与男女自身存在的生物差异特征有关，也与男女两性赖以生存的社会和语言环境密切相关。

The 3 different regimens consisted of gemcitabine and cisplatin, carboplatin and paclitaxel, and docetaxel and cisplatin. Although this was not a direct head-to-head comparison, the "data derived from this series of embedded trials strongly suggest that commonly used platinum-based doublets produced similar results," the editorial comments."What modest differences exist are likely a result of unrecognized biologic differences in the treated populations and are probably of little clinical relevance."J Natl Cancer Inst.

这三种化学治疗药物包括gemicitabine、cisplatin、carboplatin与paclitazel、docetaxel与carboplatin；虽然这不是直接的比较，这些数据来自这一连串的研究暗指以铂金类药物为基础的比较出现类似结果；存在于之间微小的差异可能是接受治疗的病患中，未能侦测到的生物差异，且在临床上的相关性可能是不高的。

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。