榆林

The methods of hydrocarbon generation and carbon isotopic kinetics are studied in Sulige Gas Field, Yulin Gas Field and Shenmu Gas Field, which indicate that the gas is mainly from Carboniferous-Permian coaly stratum in the south or southwest of the three gas fields; the hydrocarbon generation of source rock is firstly originated from 150Ma or so in Dingbian and its south area, and is successive from south to north and from west to east; the migration directions of natural gas are regionally from southwest to northeast, and partially from bottom to top.

采用生烃动力学和碳同位素动力学的方法，通过对苏里格气田、榆林气田和神木气田的剖析，认为这3个气田的气源主要来自其南部或西南部的石炭-二叠系的煤系地层；烃源岩生烃始于150Ma左右，出现在定边及以南的气源岩区，并存在由南向北、由西向东推进的趋势；天然气区域运移方向是由西南向东北，局部运移方向是由下向上。

It was found that the climate was cold and humid comparatively in 1970's, the climate was warm and droughty comparatively in 1980's, the climate became warmer and doughtier in 1990's than before.

结果表明：榆林市在20世纪70年代属偏冷湿时期，80年代为逐渐转暖的偏暖干时期，90年代为异常暖干时期，21世纪前四年气候较为暖湿。

Davidii forest, while arbor layer could be divided into two sub-layers, with a height of 4.05-7.86 m for the upper layer, and of 2.05-3.20 m for the lower layer. In the community, there were 32 herbal species belonging to 27 genera of 13 families and dominant by Poaceae, Fabaceae and Compositae, and 11 areal types, among which, the species number in Mongolian-Northeastern China-Dahuricia-North China areal type was the highest (34.38%), followed by that in Northeastern China-North China areal type (12.5%).

结果表明：研究区刺榆林不存在灌木层；其乔木层可划分为2个亚层，上、下层高度分别为4.05~7.86和2.05~3.20m；林下共有32种草本植物，隶属13科27属，以禾本科、豆科和菊科为主；研究区有11个植被分布区型，其中，蒙古－东北－兴安－华北分布区型种类最多(34.38%)，其次为东北－华北分布区型(12.5%)。

Four field strains of infectious bronchitis viruswere isolated from chicken kidney, trachea and lung of the young layer flocks in some regions of Shaanxi province. Biological characterizations of the virus were investigated by virus pathogenicity to chicken embryo and healthy chickens, hemagglutination test, hemagglutination inhibition test, dwarfing embryonated chicken eggs, electron microscopy and reverse transcription polymerase chain reaction. It demonstrated that allantoic fluid of each passage virus could hemagglutinate chicken red blood cells by treatment with 1% trypsin. The standard positive serum to IBV could inhibited the hemagglutination. The isolates could make respiratory and kidney diseases in chickens.

采集陕西省宝鸡市、扶风县、兴平市和榆林市等地鸡场疑似传染性支气管炎发病鸡病料，通过9～11 日龄非免疫鸡胚进行了病毒的实验室分离和传代，并对分离毒株进行了病毒的血凝性、血凝抑制性、致病性、鸡胚矮小化、电镜特征等生物学特性鉴定，结果表明，4 株分离株经1%胰酶处理后的各代病毒尿囊液均可凝集鸡红细胞，标准阳性血清可特异性的抑制其凝集性，回归试验可复制出与自然发病相同的病例，病毒传代物有明显的致鸡胚矮小化作用，透射电镜下可见有近似球形、直径100 nm左右的冠状病毒粒子，将分离鉴定的4 株IBV 定名为BJ-04、FF-04、XP-03 和YL-04。

This study of Yulin district 5 Psammophyte CP, CF, Ca, P, NDF, ADF, ASH, DM and other eight conventional nutrients.

本实验研究榆林地区5种沙生植物CP、CF、Ca、P、NDF、ADF、ASH、DM等8项常规营养成分。

Data from TM images from the years1986,1993, 2000 and 2006 around Shenfu coalmine area were used to exbract normalized difference vegetatio n index by the software ERDAS firstly, then using spatial modeler of ERDAS compute vegetation fr action and classify through unsuperˉ vised classification.Finally,we get vegetation fraction mapping of c oalmine within 1986～2006.It clearly inˉ dicate that the coalmine vegetation fraction increase in whole but d ecrease in some colemine district.

通过利用榆林市神府矿区1986、1993、2000、2006年四景同期TM影像数据，使用ERDAS软件首先提取植被指数，根据像元二分法利用ERDAS的建模工具Spatial Modeler计算出矿区的植被覆盖度，利用非监督分类方法对矿区的植被覆盖度进行分类、赋色，最后得出矿区1986～2006年的植被覆盖度分类图，定量的说明了矿区20 a年间的植被覆盖变化情况：植被覆盖度整体提高，在局部矿区则有所降低。

At present, Yulin Airport route network and flight time has been significantly optimized, step by step to rationalize the fare system, the capacity load factor in the flight against the backdrop of the ever-increasing gradually picked up, an average of more than 80% increase in passenger throughput ranking first in the airport extension .

目前，榆林机场航线网络和航班时刻得到显著优化，票价体系逐步趋于合理，客座率在航班运力不断增加的背景下逐步回升，平均达到80%以上，旅客吞吐量增幅高居全国支线机场之首。

Corn as forage crop is an important grain crop in Yulin City.

玉米是榆林市重要的粮、饲兼用作物，种植历史悠久。

Through this service quality evaluation on the key account of YLEP, this paper uses Gaps Model of Service Quality and Interpretative Structural Model to find out the deficiency in the key account service, sounds advice for managers to improve the customer's satisfaction.

通过此次大客户服务质量满意度调查，应用服务质量差距模型和解释结构模型，找出了榆林供电局大客户服务工作中的不足之处，为管理层提出了改进的意见和建议，对提高服务质量满意度作了有益的探索。

According to the source analysis, TCC's wine market into the cloud, first phase of Yunnan liquor broad consumer market, while the Yunnan Although liquor market such as "Yulin Stephen","Yanglin fat liquor" and a number of regional brands, but the lack of can push the market a greater number of brands.

据消息来源分析，TCC的入云端的葡萄酒市场，云南酒类消费市场广阔的第一阶段，而虽然云南白酒市场，如&榆林斯蒂芬&，&杨林肥酒&和区域品牌的数量，但缺乏对可以推动市场的品牌较多。

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。