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NEW YORK Feb 01 - Researchers have identified a myeloproliferative syndrome, defined by mutations in the Janus kinase 2 gene, that includes patients with a current diagnosis of polycythemia vera or idiopathic erythrocytosis.

纽约 二月一日－研究者已经确认了一种由Janus激酶2基因变异引起的新型骨髓增生综合症，这一症状现在被诊断为真性红细胞增多症或自发性红细胞红细胞增多

An O2-labile protein (hypoxia-inducible factor 1, HIF-1) has been identified that is hydroxylated and degraded under normoxic conditions but actie in hypoxia, where it enhances Epo gene transcription resulting in eleated hemoglobin leels and O2 capacity of the blood. The stimulation of Epo production at lowered arterial O2 tension can be maladaptie, if erythrocytosis deelops such as seen in high altitude habitants.

此途径因提高了体内血红蛋白水平，加强了epo基因转录和氧运输能力。epo 在动脉低氧情况下的产生使机体不适应－－这种情况就如同世居高原人群中的细胞因子发生变化一样。

Methods:The foreign body in esophagus was removed through esophagoscope after it was identified with Electronic Gastroscopy which was used in the case of no detailed medical history and unconfirmed diagnosis.

本例患者食管异物史提供不清，在没有明确诊断时，采用电子胃镜检查，确诊食管异物后，于食管镜下作食管异物取出术。

A new technology, Supercritical Fluid CO_2 Extraction, was also supplied to study the plant. The technological parameter was optimal. Total extract of SFE-CO_2 were 4.86 times of the essential oil extracted by SDE, main active extracted constituents were 1.36% high than SDE. The chemical constituents of SFE-CO_2 were also analyzed by GC-MS. 57 constituents were identified, 29 constituents of them were first discovered. 24 constituents were discovered in two extract. Fingerprint is a good technology to elevate the quality of herb medicine. The main active fraction can be extracted by SDE and SFE, Fingerprint was studied respective, chromatographic parameter was acquired. 22 peaks were assigned common peaks in the spectrum of essential oil, 17 peaks were assigned to common peaks in the spectrum of SFE extract.

采用现代共性关键技术超临界CO_2萃取技术，通过正交试验，优选了超临界CO_2提取牛至挥发油的工艺，并与传统的水蒸气蒸馏法进行了比较研究，结果显示：前者提取有效部位的收率为后者的4.87倍，主要有效成分的转移率是后者的1.36倍；采用GC-MS分析方法和NIST质谱库检索，对SFE和SDE所提化学成分进行比较，SFE分离鉴定了57种化合物，占提取物总含量的86.96％，其中29种化合物为首次从该植物中鉴定；后者分离鉴定了69个化合物，占提取物总量的98.28％，其中27种化合物为首次从该植物中鉴定；两种方法的提取物中共有成分25种，包括主要有效成分麝香草酚、香荆芥酚、对聚伞花素等。

Results: The ultrasound extraction used ethyl ether superior to other methods of 5,identified 36 elements,containing the main esters,carbon-and second-category,at least acetylene category.

结果：乙醚超声萃取的前处理方法明显优于其他5种方法，鉴定出36种成分，主要为酯类，碳烯及烷类次之。

By using two color FISH with one euchromosome probe and one sex chromosome probe, the sperm with same color of two hybridization signals in one sperm head could be identified as aneuploidy sperm or diploid sperm.

若用1条常染色体探针和1条性染色体探针进行FISH，可以区别头部有2个相同颜色荧光杂交信号的精子属非整倍体精子或二倍体精子。

Vegetative storage proteins in the Euonymus fortunei var. Radicans were identified by using optical microscopy and SDS-PAGE.

以不同季节的爬行卫矛枝条为研究对象，利用光学显微技术和SDS-PAGE技术来研究其休眠期和生长期枝条中贮藏蛋白的分布情况。

Vegetative storage proteinsin the Euonymus fortunei var.Radicans were identified by using optical microscopy and SDSPAGE.

以不同季节的爬行卫矛枝条为研究对象，利用光学显微技术和SDS-PAGE技术来研究其休眠期和生长期枝条中贮藏蛋白的分布情况。

Thirty-two species were identified from the samples, including 19 copepods, 3 amphipods, 3 cumaceans, 2 mysids, 2 chaetognaths, 2 cladocerans, and I euphausiid.

共鉴定出底边界层动物32种，其中桡足类19种，端足类3种，涟虫3种，糠虾2种，毛颚类2种，枝角类2种，磷虾1种，可划分为中型浮游动物、大型浮游动物和超底栖动物三个生物类群。

Anthocyanidins in Euphorbia pulcherrima were extracted and identified by use of UV-vis spectrophotometry, high performance liquid chromatography and mass spectrometry.

用紫外-可见光分光光度计、高效液相色谱和质谱技术对一品红红色苞片中的花色素提取液进行了初步鉴定。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。