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k86475586

铜虫 (小有名气)

应助: 0 (幼儿园)
金币: 576.8
帖子: 92
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虫号: 3065977
注册: 2014-03-18
专业: 企业理论

[求助] 求大神翻译，字篇多！！！

Recently, a substitute and recycle energy is an
imperative issue all over the world. Nuclear energy
becomes a highlight again because of its high and stable
electric output. However, nuclear energy has been
suspended in the past decade because it was filled with
fear and anxiety due to nuclear accidents and safety
treatments or disposal of high-level radioactive waste.
Global warming effect caused by CO2 compels us to
face the problem of consuming fossil fuels, including
petroleum, coal, and gas during the past several decades.
There are three operating nuclear power plants in
Taiwan and one is under construction and is expected to
be put into operation in 2010. For long-term
performance assessment of radioactive waste
repositories, it is necessary to deal with their problems
today because of its long half-life and to hinder the
possible transport of radionuclides into the environment.
The deep geological disposal is the best way to solve the
recent problem in the world and Taiwan Power
Company (TPC) proposed a long-term disposal project
for the high level waste (HLW) several years ago. In
addition, the multi-barrier concept was adapted to
overcome the disposal difficulties of HLW into
geological formations. Therefore, it is imperative to
investigate the migration of radionuclides in the host
rocks (i.e., granite). Some relating results have been
presented in the literature1,2 for assessing the long-term
performance of radioactive waste repositories.
The batch tests are the most popular and convenient
method in the laboratory, for the estimation of the
retardation of radionuclides in geological environment.
However, the applicability of batch tests has been
discussed and criticized as the advancement of
technology has relaxed the aforementioned
limitations.3,4 It was recognized that the distribution
coefficients (Kd) of batch techniques are too simple to
represent the reaction system of interest in many cases.
However, it was found that the diffusion techniques that
are frequently used, gives more accurate information
about the radionuclides in deep geology.5,6 Some
literatures7–9 have discussed the advantages and
disadvantages of Kd and Rf obtained by the two
methods. Generally, all experimental results showed that
the Kd values derived from the diffusion tests are more
accurate to evaluate the transport of radionuclides in
compacted media than those obtained from batch
experiments. However, most Kd values are acquired by
the batch method because of its simplicity and
convenience in the experiment.
This paper is an extension of our previous papers,
where the sorption of individual and coupling Cs and Se
in crushed mudrock was studied. The experimental
results10,11 showed that the Kd value of Se is higher than
that of Cs derived from the batch method. The sorption
of Cs is different from that of Se as the results of
individual and coupling Cs and Se experiments show
because the sorption mechanisms are different. In this
study, through-diffusion columns were adopted and
analyzed by compacted mudrocks. In addition, CRANK12
stated that the steady state of diffusion is achieved when
the dimensionless parameter: （公式不用翻译）is larger than 0.45. According to the accumulated
breakthrough curves,12 the apparent and effective diffusion coeffiecients (Da and De) could be calculated
by the slope and intercept of the breakthrough curve.12
Besides, a non-reactive radionuclide, HTO, was initially
used in the diffusion experiments for assessing the
ability of radionuclide retardation. It was more suitable
to compare the retardation factor obtained from a nonreactive
radiotracer (HTO) than from CRANK’s method
for evaluating the retardation of radionuclides.
Therefore, HTO was used before cesium in throughdiffusion
tests in order to obtain the distribution
coefficients (Kd) and retardation factor (Rf) of Cs and
Se. Synthetic groundwater (GW) was used in this work
to reflect the extreme situation that the highly reducing
groundwater might intrude into the repositories
underground 400 m. The results of both experiments are
compared and discussed in this study.

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1楼 2014-06-21 13:35:03

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Luse_91

新虫 (著名写手)

翻译EPI: 1
应助: 9 (幼儿园)
金币: 3953.3
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帖子: 1218
在线: 224小时
虫号: 3233203
注册: 2014-05-25
专业: 中药神经精神药理

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RXMCDM: 金币+1, 多谢应助！ 2014-06-21 17:14:02
k86475586: 金币+8, ★有帮助 2014-06-21 18:26:12

近来，寻找一个替代品和可再生的能源是全世界必须着重考虑的问题。核能再次成为重头戏，因为它的告高能和稳定的电输出。然而，在过去十年核能被暂缓因为它是令人恐惧和焦虑的，由于核事故和安全处理或是高水平的放射废弃物的处理。
温室效应强迫我们去面临化石燃料的消耗问题，包括石油、煤和煤气在过去的几十年。
在台湾有三个正在运作的核电站，一个在建设中一个预计2010年投入使用。
对于长期的核废弃物仓库的性能评估，现今处理他们的问题是非常的必要因为它很长的半衰期并且组织放射性同位素释放倒环境中。
深地层处理是现今世界上解决这个问题最好的方法，并且几年前台湾电力公司针对高放射废弃物提议了一个长期的处理项目。
另外，多重障碍的概念是被用于克服了HLW进入地质层组的难题。
因此，研究放射性同位素在主岩中的转移是非常必要。

翻译不下去了，这么长，金币又是那么点儿！

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念只念那相遇的一瞬间为你把时空穿越怨莫怨这含泪的一双眼转眼间沧海桑田念的怨的都说爱是自己的信念翻云手手中月聚了散了才知缘是凡心一点

2楼2014-06-21 15:22:39

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