鉴别分析

Analysis on the fingerprint by similarity analysis indicated that the fingerprint could be used to identify of Swertia mussotii and evaluate its quality.

采用相似度分析方法对所建指纹图谱进行解析，表明所建立的指纹图谱可用于青海川西獐牙菜药材的真伪鉴别和质量评价。

Phylogenetic analysis revealed that cytb gene was helpful to distinguish validly between S.japonicum isolated from mountainous areas and lake areas in mainland China.The cytb gene could also distinguish S.japonicum from other trematodes belonging to the family Schistosomatidae.

种系发育关系分析发现，依据cytb基因可有效地区分我国日本血吸虫山区和湖区两种流行类型，显示种内遗传变异特点，并可将日本血吸虫与分体科的其他吸虫鉴别开来。

Domestic and overseas entomologist has showed that different molecular marker methods for molecular identification of Trichogramma species. However, each of molecular marker methods previously has own deficiency, and molecular marker genes used in Trichogramma species identification almost is ribosomal DNA, study about mitochomadrial DNA in Trichogramma spp. is infrequent.

近年来，随着分子生物技术的发展，国内外研究者曾用不同分子标记方法来进行赤眼蜂蜂种的分子鉴别，然而每种分子标记都有自己的不足，且赤眼蜂分子鉴定中用于序列分析的标记基因基本上为核糖体核糖核酸基因，而有关线粒体DNA的研究却鲜有报道。

Objective:To analyse the imaging featrues of intractranial tuberculoma and improve the diagnostic accuracy.

目的：分析31例颅内结核瘤的影像学资料，探讨其诊断和鉴别诊断。

In this paper,by simulating different indoor and outdoor experiments of the crude oils in the different weathering environment of summer and winter,and using fluorescence spectrometry,Comparison and analysis of spectra from oils of unweathered and at different weathering times are experimentalized(crude oils from Kuwait and Saudi- Arabia,which are both light crude oils),which could identify the two similar oil species,without taking into account the biological degradation,wind speed,as well as factors such as the role of the waves,and the impact of factors,then how the fingerprints will be changed in the law have been found.

本文通过模拟不同原油在室内和室外的夏、冬两季的风化实验，运用荧光光谱法，对未风化油品和不同风化时间的油品(科威特原油和沙特阿拉伯轻质原油)进行谱图对比分析，鉴别两种相似油种，在不考虑生物降解、风速以及海浪等因素的影响，找出油指纹随风化影响因素的变化规律。

ABSTRACT Objective To discuss the clinical pathologic features and differential diagnosis of mixed germ cell sex cord stromal tumorwith malignant variant of germ cell tumor Methods The clinical pathologic datum and immunophenotype were studied in the case of ovary MGCSCST with malignant variance of germ cell tumor Results The patient's genital anatomy and female phenotype were normal,karotypes was 46xx with uterogestation The tumor tissue consisted of mixed germ cells and sex cord stromal cells with evident malignancy of mixed germ cells There was no atypical structure of gonadoblastoma in tumor tissue Conclusion MGCSCSST has complex morphosis,thus,to prevent misdiagnosis,more samples should be collected and more slices be cut The patient may have prognosis malo when there are high malignant variants of mixed germ cells in tumor tissue

目的 探讨混合性生殖细胞性索间质肿瘤(mixed germ cell sex cord stromal tumor，MGCSCST)伴恶性生殖细胞肿瘤变异型的临床病理特点及鉴别诊断。方法卵巢MGCSCST伴恶性生殖细胞肿瘤变异型的病例进行临床病理特征和免疫表型分析。结果患者生殖器的解剖结构和女性表型正常，染色体组型是46xx，足月妊娠。肿瘤组织由混合性生殖细胞和性索间质肿瘤构成，混合性生殖细胞有显著的恶性特征。瘤组织中没有典型的性腺母细胞瘤结构。结论 MGCSCST有复杂的形态结构，因此更多的取材和切片可以防止误诊，当肿瘤组织中的混合性生殖细胞有高度恶性变异时，患者预后不良。卵巢肿瘤；生殖细胞性索间质肿瘤；免疫组织化学

Production technology of choline chloride,content analysis method,mainly faking and adulterating methods and relevent distinction methods were summarized in this paper.

综述了氯化胆碱生产工艺，质量分数分析方法及现在市场上的一些主要造假掺假手段和鉴别方法。

The method was developed for spectroscopic analysis of copper in ferroalloy. The results can meet the qualitative and the quantitative analysis on copper in ferroalloy, can be used to exactly examine alloy and avoid the commixing of material on spot.

研究了铁基合金中Cu元素的数字化分析技术，结果可用于铁基合金中Cu元素的定性、定量分析和牌号鉴别。

It was confirmed that facultative apomixes is existed in coffee species based on emasculating treatment, cyto-genetic observe and SSR marker detection.

细胞遗传学观察发现咖啡四倍体类型材料(2n=4x=44)的多胚和多胚苗中含有天然的单倍体胚和单倍体小苗(2n=2X=22)；去雄处理后，可见子房膨大，其中5份材料获得了果实和种子，初步说明无融合生殖现象的存在；对小粒种品种间杂交F1代个体的SSR分析，发现多胚苗中存在与母本图谱相同且不携带父本特异带的后代以及携带双亲特异带的有性后代，表明子代有仅来自母本的无融合生殖个体分离出来。 3 建立了咖啡无融合生殖的分子鉴别方法。

Objective:To evaluate the diagnostic values of CT and MRI in head and neck hemangiomas and vascular malformations.

目的：分析头颈部血管瘤及血管畸形的CT、MRI表现，探讨其诊断及鉴别诊断价值。

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。