全反式维甲酸对人真皮成纤维细胞RXR的表达影响

Ｎｏｒｔｈｅｒｎ杂交检测人真皮成纤维细胞维甲类Ｘ受体（ＲＸＲ）的表达。结果显示,细胞中只有ＲＸＲα和β的信息ＲＮＡ表达,无γ受体信息ＲＮＡ表达;用全反式维甲酸（ＡＴ－ＲＡ）刺激细胞于不同时段,对ＲＸＲ家族无诱导作用。表明人真皮成纤维细胞ＲＸＲ基因家族的表达调节完全不同于ＲＡＲ基因家族     

自动控制系统穿越频率的求解

以自动控制系统的开环对数幅频曲线的斜率为桥梁,给出一种求解系统的穿越频率的方法．     

褶皱正交剖面的计算机辅助编绘

文章以巢湖市北部山区平顶山向斜为例,通过详细的野外调查,在进行精准的地质构造填图的基础上,对绘制正交剖面的过程进行了概括,并提出了计算机辅助编绘褶皱正交剖面的方法,其结果与手工绘制的正交剖面进行了比较,结果吻合.该法在保证精度的前提下提高了效率,为相关褶皱构造研究和实际应用提供了参考.     

表面贴装技术在电子工艺实习中的应用

介绍了表面贴装技术的相关内容，结合学校电子工艺实习的特色，将其引入教学中。选用脉冲可调恒流充电器作为表面贴蓑技术的实习作品，开展了相关的实践教学，最后总结了包括焊接距离、焊膏的保存以及在使用再流焊机的过程中需调节其焊接工艺温度曲线等在教学过程中的一些经验。     

Distribution and identification of the low-velocity layer in the northern South China Sea

The low-velocity layer (LVL), closely related with tectonic activities and dynamic settings, has always been a hot topic in the deep crustal structure studies. The deep seismic (OBS/OBH) and onshore-offshore experiments have been extensively implemented in the northern South China Sea (SCS) since the 1990s. Six seismic profiles were finished on the northern margin of SCS by domestic and international cooperations. The features of crustal structures were revealed and five velocity-inversion layers were discovered. Among them three LVLs with 3.0—3. 5 km·s-1 velocity are located in the sedimentary structure (2.0—6.0 km in depth and 2.0—4. 6 km in thickness) of the Yinggehai Basin and Pearl River Mouth Basin. They were identified by the reflective and refractive phases for their shallow depth. The other two LVLs with 5.5—6.0 km·s-1 velocity generally existed in the middle crust (7.0—18.0 km in depth) with an about 2.5—6.0 km thickness in the transitional crustal structure of the northeastern and northwestern SCS. They were detected by the refractive phase from their overlain and underlying layers. We explored the possible tectonic formation mechanisms combining with previously reported results, which provided evidence for the formation and evolution of SCS.     

Shell concentrations of Early Silurian virsianid brachiopods in northern Guizhou： Temporal and spatial distribution and tempestite formation

Shell beds in the uppermost Xiangshuyuan Formation and its coeval Upper Shihniulan Formation （Lower Silurian）, northern Guizhou, SW China, are interpreted as tempestites occurring on the Upper Yangtze Platform. The shells are dominated by two endemic and transient virgianid （brachiopod） taxa, Paraconchidium shiqianensis and Virgianella glabera, which vary in relative abundance and deposited as fragments of valves with cemented micrite that differs from the surrounding sediment, demonstrating that the shells were not originally preserved in growth positions. The thicknesses of individual shell layers vary from ten centimeters to more than four meters. Shells had been strongly stirred up by high-energy currents, mainly caused by ocean storm events and probably related to the profile of the geographic shape of the coastline. Fragmentation of shells, in particular, their thinning anterior parts of ventral and dorsal valves are more intensive. The benthic assemblages are from lower BA2 to upper BA3 in depth, assigned to near shoal belt in geographic background. Breakage and stacking density are of the indexes of proximal and distal transportations. Northern Guizhou was located within the lower latitudes of the Southern Hemisphere during the Silurian time, and obviously affected the depth of the virgianid inhabitation. Most of these shells were disturbed repeatedly by surges. It is inferred that on average, several ten thousand years of growth of shells were required for development of shell layers, followed by storm disruption.     

北宋皇家园林艮岳的文化内涵探析

艮岳是北宋时期在都城东京建造的一座著名的皇家园林。它在有限的空间范围内，充分利用山石、水体、建筑、动植物等造园要素，创造出气势恢宏、构思缜密的皇家自然山水园林，精美而典雅。山石的设计，水体的聚合，建筑的构造，植物的配置，动物的放养，这些方面充分体现出这座皇家园林的文化内涵。     

从北方神鹿到北方龟蛇观念的演变——关于图腾崇拜与四象观念形成的补充研究

作者曾论述过四象观念起源于华夏族的图腾崇拜，即东方苍龙源于东方东夷民族的龙图腾，北方龟蛇源于北方夏民族的龟蛇图腾等。近发现战国以前四象文物图案北方是鹿而不是龟蛇。该文因此作出补充研究，论证了北方神鹿也是北方民族的图腾，并且论述了从神鹿到龟蛇的演变过程和思想基础     

加快浙北地区农业剩余劳动力转移的对策

浙江北部地区的社会经济发展速度和农业劳动力转移的速度都远远高出全国的平均水平，但由于区域差异和历史的原因，浙江北部地区还存在受精劳动的过剩，并且转移难度在加大，针对浙北地区农村经济发展和农业剩余劳动力的产生原因和转移现状，提出了调整农业内部结构、大力发展第三产业、加快城市化进程、进一步发展和壮大中小企业和提高农业劳动力素质等加快农村剩余劳动力转移的途径和对策。     

北方高校绿色图书馆的构建

根据北方的气候特点,阐述了构建北方高校绿色图书馆的必要性和绿色图书馆的建设内容,探讨了构建北方高校绿色图书馆的途径。