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In order to find biologically active urea compounds,seven new N-[5-(3-pyridyl)-1,3,4-thiadiazol-2-yl]-N'- urea derivatives were synthesized by the reaction of 2-amino-5-(3-pyridyl)-1,3,4-thiadiazole with aroylazides,which were prepared starting from carboxylic acids,ethyl chloroformate and sodium azide by one-pot procedure.

为了寻找高生物活性的脲类化合物，通过2-氨基-5-(3-吡啶基)-1，3，4-噻二唑与酰基叠氮化物反应，设计合成了7个新的N-[5-(3-吡啶基)-1，3，4-噻二唑-2-基]-N'-取代苯基脲，其中芳酰基叠氮化物是以芳酸、氯甲酸乙酯、叠氮化钠为起始原料采用&一锅法&所制得。

The biomarkers such as the n-Alkanes, the isoprenoids, the terpane, and cholestane were detected through GC-MS analysis. Based on the study of the biomarkers, the biological evolution during Permian and Triassic can be divided as three stages, namely, the mixing source stage of low biota such as thallose and advanced plant in late Permian (below bed 63), the stage of low biota such as thallose in the boundary transitional layer (bed 63-69) and the mixing source stage of advanced plant and low biota such as thallose in early Triassic (above bed 69). What's more, the second stage near the boundary transitional layer can be subdivided into 4 stages. The stages of biota evolution is close related with sedimentary environment changing and the boundary transitional layer.

利用GC—MS分析技术，在陆相地层中检测出正构烷烃、类异戊二烯烷烃、萜烷和甾烷类生物标志化合物并根据生物标志化合物和特征值研究，将二叠系—三叠系生物演化划分为三个大的阶段，即晚二叠世的菌藻类低等生物与高等植物混源阶段（63层以下），界线异常层的菌藻类低等生物阶段（63-69层）和早三叠世高等植物与菌藻类低等生物混源阶段（69层以上），界线附近异常层的第二阶段又进一步细分为4个次一级阶段，生物演化阶段与沉积环境变化及界线异常层具有非常密切关系。

Using pentaerythritol as initiator, boron trifluoride diethyl etherate as catalyst.dichloroethane as dispersion agent, the chloride polyether polyol is synthesized based on the mechanism of cationic ring-opening polymerization of epiclilnrohyclrin.The azide polyether polyol is synthesized, in DMF through A and sodium azide, and the non-reported azide energetic curing agent is synthesized through the adduction of B and IIDI.

以季戊四醇为起始剂，三氟化硼乙醚为催化剂，1，2—二氯乙烷为分散剂，环氧氯丙烷经阳离子开环聚合反应制成氯化聚醚多元醇，A在N，N—二甲基甲酰胺中与叠氮化钠反应制得叠氮聚醚多元醇，B与六亚甲基二异氰酸酯加成反应制得未见文献报道的叠氮固化剂。

The characteristics of non-azide compositions including high nitrogen compounds such as tetrazoles,guanidine,improved thermites,oxidants,binders and process assistants are discussed.Because of their advantages such as adjustable burning rate,nontoxicity and high gas yield,non-azide gas generant to replace azide gas generant will put into use widely.

对出现的四唑类、胍类、铝热剂类等非叠氮配方的高氮化合物燃料、氧化剂、黏合剂、工艺助剂等特点和发展做了总结和讨论，指出非叠氮高氮化合物有无毒、燃速范围宽、产气量大、燃温低等优点，正在取代叠氮配方燃气发生剂，得到广泛应用。

The conformational spaces of a protein are huge, and chances are rare that any heuristically generated structures will directly fall in the neighborhood of the native structure.

蛋白质摺叠的结构范围相当广阔，直接利用计算方法产生出类似自然结晶结构的结构有相当的难度；在理想的情况下，非自然的摺叠结构或许可以提供相当的助益，利用非自然的摺叠结构来修正计分函式或能量函式，并利用修正过后的计分函式或能量函式来分辨出自然和非自然的结构，也许是个可行的方法。

Some information such as pitch and harmonic of each speech stream, interaural time difference and interaural intensity difference and etc could be obtained from overlapping speech by the analyzing and modeling of overlapping speech and noisy speech, based on which the interested speech can be reconstructed and overlapping speech can be separated.

通过对混叠语音和含噪语音进行分析建模，对混叠语音分别提取其各自语音流的基音及谐波、双耳时间差ITD和强度差IID等信息，并以此重构目标语音分量，达到分离混叠语音的目的。

The steps of the mold method are as follows: the mold tool stack is closed to form the cavity; the valve is opened to allow resin to enter the cavity; the valve is closed; the resin is allowed to cool; and the mold tool stack is opened to allow removal of the plastic overcap from within the mold tool stack.

模制方法的步骤如下：关闭模制工具叠箱以形成空腔；打开阀门从而允许树脂进入空腔；关闭阀门；冷却树脂；打开模制工具叠箱从而允许从模制工具叠箱中取出塑料罐盖。

Three periods petroleum accumulation exists in South-of-fifth-area oil field, the first period oil and gas is the Jiamuhe group mature and high mature hydrocarbon and the Fengcheng group mature hydrocarbon in late Permian to early Triassic, was destroyed in the Indo-Chinese movement intermediate stage, but some still is conserved in good conserved condition, which is one of exploration objects. The second period is the Fengcheng group high mature hydrocarbon in late Triassic to early Jurassic, which is the important exploration target. The third period is the Jiamuhe group overmature dry gas in the late Jurassic Period to the early Cretaceous.

五区南油气藏存在三期成藏，第一期是佳木河组过成熟干气和风城组成熟油气，成藏期在晚二叠世到早三叠世，在印支运动中期被破坏了，但是在保存条件好的地区仍存在这一期油气藏，它是勘探的对象之一；第二期是风城组高成熟油气，成藏期在晚三叠世到早侏罗世，也是勘探的对象之一；第三期是佳木河组过成熟干气，成藏期在侏罗纪到早白垩世。

With high silica（SiO2 = 75.49 % on average）, rich potassium（K2O = 3.88 % on average）, low titanium （TiO2= 0.136% on average）and A/CNK high than 1.1（1.53 on average）, the acidic volcanic rocks of Manghuai Formation belong to potassium-rich calc-alkali rhyolitic volcanic rock series.

官房地区火山岩属三江构造带南澜沧江构造岩浆带北段，中晚三叠世喷发了一套由中三叠统忙怀组酸性火山岩和上三叠统小定西组基性火山岩组成的火山岩系。

More mountains; bluish beauties never attainable, or ever turning into inhabited hill after hill; south-eastern ranges, altitudinal failures as alps go; heart and sky-piercing snow-veined gray colossi of stone, relentless peaks appearing from nowhere at a turn of the highway; timbered enormities, with a system of neatly overlapping dark firs, interrupted in places by pale puffs of aspen; pink and lilac formations, Pharaonic, phallic,"too prehistoric for words"; buttes of black lava; early spring mountains with young-elephant lanugo along their spines; end-of-the-summer mountains, all hunched up, their heavy Egyptian limbs folded under folds of tawny moth-eaten plush; oatmeal hills, flecked with green round oaks; a last rufous mountain with a rich rug of lucerne at its foot.

山叠山；淡青色的美景我从未看清楚，一山接一山之后出现了人迹炊烟；东南部，重峦叠障；覆着雪脉的摩天灰色石碑，连绵的尖峰在高速公路的转弯处突然现露出来，幽深的林阵，与整齐的暗黑色枞树完全重叠，又被白杨树柔白的烟雾切断；粉色和淡紫色的组合，是属于法老的，是属于阳器崇拜的，&太是史前的了叫人无话可说&；黑色熔岩山岗；早春的山峦，沿山背到处是幼象的细毛，—夏末的山峦，全都驼着背，它们沉重的埃及式肢体摺叠在黄褐色厚绒布纹里；燕麦片山群，点缀着绿色的圆椽树；最后一座红山，山脚布满一片繁茂的紫花苜蓿。

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％。