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The Yangtze River Delta is devoting major efforts to developing green energy under the doubles pressures both from energ......
第四章自然选择(节选)在变化着的生活条件下,生物构造的每一部分几乎都要表现个体差异,这是无可争论的;由于生物按几何比率增加,它......
An epidemiologic study of mitochondrial membrane transporter protein gene polymorphism and risk fact
The present study involved a questionnaire survey of 156 mothers that gave birth to children with neural tube defects or......
For a few years, a new theory on the microbial origin of the mud-mounds hasbeen proposed. This theory has been proved b......
An ultra broadband fractional-N frequency synthesizer for 802.11a/b/g zero-IF transceiver application is presented.The m......
We propose a new phase-modulation-combination system for the generation of arbitrarily shaped repetition rate pulses. In......
The basic lubrication equations are used to calculate two kinds of lubrications examples,a plane inclined slider and a j......
So far,more than 150 marine oil-gas fields have been found onshore and offshore about 350. The marine source rocks are m......
- Theoretically speaking, it is impossible to make the differential equation of motion uncoupled for the natural modes ......
November 3–7,2015Rhode Island Convention&Omni Hotel Providence,Rhode Island,USA SNAME will host the 5th World Maritime ......
ON THE PERFORMANCE OF DATA-DEPENDENT SUPERIMPOSED TRAINING WITHOUT CYCLIC PREFIX FOR SISO/MIMO SYSTE
Compared with channel estimation method based on explicit training sequences,bandwidth is saved for those methods using ......
基于时域有限差分法研究了几何尺寸、内核材料和外界环境、入射光偏振方向对椭圆截面偏心金纳米管光学性质的影响.结果表明,当入射......
非合作通信背景下,针对利用干扰近似法（Interference Approximate Method,IAM）进行OFDM/OQAM系统信道估计需要导频序列位置作为先验......
分析了正交误差和失调误差产生的原因，推导了正交误差和失调误差的表达式．开环系统分析表明，为了避免开环系统出现谐振峰，两模态（驱动模......
油气储量增长趋势预测对于油气战略规划具有重要意义，预测结果的合理性主要取决于预测方法或模型的适用性和对盆地的石油地质条件的......
文章以作为某海洋平台的补给通道的软管的支架为例,并结合以往具体项目出现的问题,通过对以往实际工作经验总结、业主方要求以及施......
针对海上砂岩油藏注聚井长效防砂与聚合物低剪切注入的核心要求，在对注聚井防砂工艺分析的基础上，结合海上油藏条件，优选滤砂管防砂作......
针对胜利油田渤南、车西、大北等区块断层复杂,地层倾角大,特别容易井斜的特点,利用带偏轴接头的小钟摆防斜钻具组合和柔性钟摆钻......
- In this paper, the authors use the finite element method to conduct a special static analysis for the loadout procedur......
海水水质评价是掌握水环境状况和进行海域水质管理的基础,同时研究水质评价理论模式有着极其重要的现实意义。通过对舟山市东极离......
香港是受台风暴潮影响最严重的地区之一。本项研究是根据近岸及浅海地区沉积物的特性来分析和获取全新世时期的台风暴潮信息。根据......
The aim of this research is to develop an algorithm and application that can perform real-time monitoring of the safety ......
笔者对梯形翻领成型器进行了进一步研究,在原有的基础上建立了新的数学模型,使其锥曲面更具有普遍性和代表性,并研究了在这种情况......
在主变运行后，为了校验主变差动绕组极性是否正确，我们往往是在主变刚投运时用相位表做带负荷检查．而后用相量图做进一步分析。这种方......
对硅灰陶粒混凝土与普通陶粒混凝土收缩徐变性能,以及二者分别在空气中和水中预应力损失进行试验研究,得出了轻骨料高强混凝土预应......
针对农业机器人视觉路径识别的识别率低、速度慢以及易受光照、杂草影响的问题,提出基于混合阈值与偏移行中线的视觉导航路径识别......
随着我国南海深水油气的开发，频发的南海台风导致深水钻井隔水管出现严重事故，造成较大损失，需要开发一种有效的防台风钻井隔水管以提......
在SW2501快速成型系统中，零件的制作是靠热喷头喷出热熔丝逐层堆积成型的，在逐层堆积过程中，热喷头要做大量的填充扫描，填充方法直接影......
Vibrations of offset printing presses are serious problem,which cause many difficulties while printing and impair qualit......
Relationship between suspended sediments from the Changjiang Estuary and the evolution of the embaye
South of Hangzhou Bay, Zhejiang Province, exhibits an embayed muddy coastline, with the muddy beaches of embayments exte......
为了明确有冰海域加锥风电基础结构的动冰荷载模型,通过寒区风电基础锥体结构现场观测得到的海冰破碎特征数据,研究了随机动冰荷载......
一条合理曲线的参量的速度近似的问题在这篇论文被提起。偏移量曲线广泛地在各种各样的应用被使用。至于在大多数情况中，偏移量曲线......
光突发交换(OpticalBurstSwitching,OBS)被公认为是构建下一代光网络的有效交换技术。在OBS网络中有效地支持QoS(QualityofService......
探讨了一步法合成松香改性酚醛树脂的反应机理，确定了最佳原料组成及合成工艺，由此制备出溶解粘度和矿油容纳度的松香改性酚醛树脂，是......
