核素

Thiscontributes greatly to t he uncertainty of the research result, and limits the use of cosmogenic nuclides in theresearch on soil and weathering profile.

简要介绍了土壤和风化壳剖面中宇成核素的收支情况和累积，并通过几个实例介绍了国外和境外一些土壤和风化壳的宇成核素研究情况：土壤和风化壳的年龄和表面侵蚀速率，坡地土壤的生成速率和蠕滑速率，土壤面的地貌演化过程，以及一些土壤侵蚀事件研究。

Logistic regression analysis showed that the number of melaena or enterorrhagia episodes and therapeutic intervention for bleeding were significantly different between patients with positive and negative results.

结论核素显像可以初步确定下消化道出血部位，为临床进一步处理提供帮助；检查时患者是否处于出血期是影响核素显像阳性率的主要因素。

Results: The positive rate of angiography, radionuclide scanning, double intestinal air-barium contrast examination, enteroscope, exploratory laparotomy and intraoperative colonoscopy...

小肠出血的诊断首选选择性肠系膜动脉造影；再行核素扫描，尤其是少量小肠出血对核素扫描较敏感；小肠气钡双重造影对小肠微小的隆起和凹陷性病变诊断价值较高；小肠镜的技术有待进一步提高；剖腹探查用于上述辅助检查均未能明确，且排除了上消化道和大肠病变而又有大量出血和反复出血者。应将小肠认为是中消化道而大肠是下消化道。

Using cosmogenic determinations we have obtained the first in-situ morainal exposure ages from the glacial moraine in the Tanggula mountain and Litang.

本研究利用就地成因的宇宙核素暴露年龄测定方法，对唐古拉山和理塘地区的第四纪冰碛物进行了10Be、26Al和21Ne暴露年龄测定，首次获得了青藏高原的第四纪冰川核素暴露年龄。

Under the base of investigation and research on natural radioactive nuclein in coal of Yili area,combining with the distributing characteristic and law of radioactive nuclein in coal of area and residents' customer of using coal in Yili area,the article raises decrement,resources,harmless and prevention and control measure of whole course managing rule with having a definite object in view and put foward a feasible plan and way for economie developmant of Yili area,resonable development and utilization of coal resources,preventing from pollution because of mining and utilizing coal and further protecting people's health.

文摘：在对伊犁地区煤中天然放射性核素调查研究的基础上，结合伊犁地区煤中放射性核素分布的特点、规律以及伊犁地区居民的用煤习惯，有的放矢的提出了减量化、资源化、无害化以及全过程管理原则的防治措施，为伊犁地区的经济发展，煤炭资源的合理开发和利用，防止因煤炭的开采利用而造成的污染，建设性的提出了切实可行的方案和途径。

Treated with one time, three times, and 10 times routinal doses of Magnolia bark of adult human, or one time, three times routinal doses of Banxia-Houpo decoction daily for seven days on mice, the method of nuclein and pigment methylene blue were used to measure the gastric residual rate of muclein and intestinal propulsive ratio of nutritional semi-solid meal.

用厚朴的1、3和10倍成人常用剂量，半夏厚朴汤的1和3倍成人常用剂量给小鼠连续灌胃7d，应用核素的方法以及亚甲兰为标记物，测定小鼠对半固体营养试餐的胃内核素残留率和小肠推进比。

Treated with one time, three times, and 10 times routinal doses of Magnolia bark of adult human, or one time, three times routinal doses of BanxiaHoupo decoction daily for seven days on mice, the method of nuclein and pigment methylene blue were used to measure the gastric residual rate of muclein and intestinal propulsive ratio of nutritional semi-solid meal.

用厚朴的1、3和10倍成人常用剂量，半夏厚朴汤的1和3倍成人常用剂量给小鼠连续灌胃7d，应用核素的方法以及亚甲兰为标记物，测定小鼠对半固体营养试餐的胃内核素残留率和小肠推进比。

Utilizing the established experimental device of single fracture nuclidic migration imitation experimental device and adopting the continually-injected and pulse-injected measures, nuclide migration experiment is made for 〓I〓 and 〓Cs〓 in granite single fracture.

利用所建立的单裂隙核素迁移模拟实验装置，采用连续注入和脉冲注入两种方法，做了〓I和〓Cs在花岗岩单裂隙中的核素迁移实验。

The software shows the change of the half life of nuclide through long to short time by continuous spectrum. e. g., red, orange, yellow, green, cyanine, blue, purple colors, and also presents the basic information about Z, N, mass surplus, half life, disintegration mode and so on.

该软件利用红橙黄绿青蓝紫等连续的光谱标示核素寿命从短到长的变化，并给出了每个核素的Z、N、质量盈余、半衰期及衰变模式等基本信息。

The reacting cosmic particles producing nuclides primarily include secondary fast neutrons, thermal neutrons and slow negative muons. Due to the differential special distribution of these reacting particles, the production rates of Cosmogenic nuclides at different latitude, altitude and depth are different.

产生宁宙成因核素宇宙射线粒子主要是次生快中子、热中子和负慢介子，由于这些宇宙射线粒子在空间分布上的不同，地球上不同纬度、海拔高度和深度处的宇宙成因核素生成速率也表现出较大的差异。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。