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In order to investigate the long-term immune efficacy for newborns after plasma-derived HBV vaccination and to decide whether the booster vaccination is necessary or not,we followed up the children,at least once biennially,who were born in 1986 in former Nanshi District of Shanghai and had received plasma-derived HBV vaccine at birth.

上海市黄浦区在 1984年开展了人群乙型肝炎病毒感染的横断面调查[1] ，人群乙肝病毒表面抗原阳性率为11 2 9%，HBV感染率为 70 6 1%。

Assuming Mulvey to be the first term of his series, Penrose, Bartell d'Arcy, professor Goodwin, Julius Mastiansky, John Henry Menton, Father Bernard Corrigan, a farmer at the Royal Dublin Society's Horse Show, Maggot O'Reilly, Matthew Dillon, Valentine Blake Dillon, Christopher Callinan, Lenehan, an Italian organgrinder, an unknown gentleman in the Gaiety Theatre, Benjamin Dollard, Simon Dedalus, Andrew Burke, Joseph Cuffe, Wisdom Hely, Alderman John Hooper, Dr Francis Brady, Father Sebastian of Mount Argus, a bootblack at the General Post Office, Hugh E.

651假定马尔维是那一连串当中的头一个，接着是彭罗斯、巴特尔。达西、古德温教授、马斯添斯基、约翰、亨利。门顿、伯纳德。科里根神父、皇家都柏林协会马匹展示会上的那位农场主、马修。狄龙、瓦伦丁。布莱克。狄龙、克里斯托弗。卡里南、利内翰、某意大利轮擦提琴手、欢乐剧场里的那位素昧平生的绅士、本杰明。多拉德、西蒙。迪达勒斯、安德鲁。伯克、约瑟夫。卡夫、威兹德姆。希利、市政委员约翰。胡珀、弗朗西斯。布雷迪大夫、阿古斯山的塞巴斯蒂安神父、邮政总局的某擦鞋匠、休。E。

Sounded around the world to save the city "assembly" at the same time, A-share market has also resorted to short-term "four-measure" good policy, we believe that it is good policy, not the beginning of the end of its The most fundamental point of departure should be a change in the stock market decline at the same time, protect the healthy development of the national economy.

响起世界各地的救市"议会"在同一时间，A股市场也采取短期的"四招"政策好，我们认为这是好政策，而不是在它的最根本的出发点结束的开始应该是在同一时间，股市下跌的变化，保障国民经济的健康发展。

Tests result showed that treated with antagonistic secondary metabolite cultured at a constant term of 4-10d, the relative inhibiting rates of all treatments were above 70% at 4% concentration after 7d.

研究了淡紫拟青霉次生代谢物质不同浓度、不同培养时段、不同培养基培养对尖孢镰刀菌菌落生长与孢子萌发的抑制作用。

New Economy enthusiasts at the time insisted that it was just a short term correction and actually an opportunity to buy more. At that point, the system would have more attractive investments and recommended a switch.

当时热衷於「新经济」的人，坚信那只是短暂的回档修正，实际上是加码的时机，那个时点，系统会出现更多吸引人的投资标的，并会建议唤股操作。

In order to testify our whether correction to Rossi's exchange term andthe potential of electron and nucleus is reasonable, we calculate 〓 moleculeelastic differential scattering cross section by electron impact on 100eV, ourresult is obviously better than Rossi's. Then we calculate elastic differentialscattering cross section at 150eV. In order to check the program thatcalculates molecule excitation cross section by electron impact, we calculatehydrogen excitation cross section from ground state to 〓 state at 20eVand 30eV, oxygen excitation cross section from ground state to 〓 state at15eV and 20eV. These calculations are in agreement with other theoreticresults, and experiment measure. Finally, we calculate sulfur moleculeexcitation〓 cross section by electron impact at5eV,7eV,9eV, 11eV, 13eV,15eV, and draw curve of excitation total crosssection corresponding to incident electron energy.

为了核对我们修改的计算激发态的程序是否正确，计算了电子与氢分子碰撞从基态激发到〓态入射能量分别为20eV和30eV时的微分截面以及电子与氧分子碰撞从基态激发到〓态入射能量分别为15eV和20eV时的微分截面，与别人的理论计算结果、实验的测量值基本一致，最后计算了电子与硫分子在5eV、7eV、9eV、11eV、13eV、15eV时的碰撞激发〓截面，作出了电子的入射能量与激发总截面的关系曲线，找出了总截面最大时对应的电子入射能量大约是11电子伏。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

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主要体现在：第一，资源的利用上，旅游资源是旅游产业发展的基础，对旅游资源的利用必须考虑未来的需求，实现持续性发展，而不能局限在满足当代人或者部分人的旅游需求；第二，产业发展形态上，旅游产业的发展从最初的简单组团，发展到传统的"走马观花"式游览，现在已经开始转型到休闲度假与旅游体验相结合，逐步得到提升；第三，旅游规划上，旅游的规划和开发是基于现在、面向未来的一项工作，在规划中必须有长远的目光和敏锐的洞察力，才能超出时间的限制，将旅游产业定位于未来；第四，旅游者需求上，从初级的感官享受，逐步提升到了精神的享受，甚至将旅游作为提升自我素养和实现人生价值的方式。

The weather and the timing of half-term week may explain at least some of the abrupt downturn at DGQI – reaching a ten-year low.

DGQI股市的持续低迷创下了近十年来的新低，或许跟这周恰逢假期空挡，外加天气状况不太乐观有些关系。

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。