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北京石油化工學(xué)院2026年研究生招生接收調(diào)劑公告

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k86475586

銅蟲 (小有名氣)

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金幣: 576.8
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蟲號(hào): 3065977
注冊: 2014-03-18
專業(yè): 企業(yè)理論

[求助] 求大神翻譯，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: （公式不用翻譯）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樓 2014-06-21 13:35:03

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Luse_91

新蟲 (著名寫手)

翻譯EPI: 1
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注冊: 2014-05-25
專業(yè): 中藥神經(jīng)精神藥理

【答案】應(yīng)助回帖

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RXMCDM: 金幣+1, 多謝應(yīng)助！ 2014-06-21 17:14:02
k86475586: 金幣+8, ★有幫助 2014-06-21 18:26:12

近來，尋找一個(gè)替代品和可再生的能源是全世界必須著重考慮的問題。核能再次成為重頭戲，因?yàn)樗母娓吣芎头€(wěn)定的電輸出。然而，在過去十年核能被暫緩因?yàn)樗橇钊丝謶趾徒箲]的，由于核事故和安全處理或是高水平的放射廢棄物的處理。
溫室效應(yīng)強(qiáng)迫我們?nèi)ッ媾R化石燃料的消耗問題，包括石油、煤和煤氣在過去的幾十年。
在臺(tái)灣有三個(gè)正在運(yùn)作的核電站，一個(gè)在建設(shè)中一個(gè)預(yù)計(jì)2010年投入使用。
對(duì)于長期的核廢棄物倉庫的性能評(píng)估，現(xiàn)今處理他們的問題是非常的必要因?yàn)樗荛L的半衰期并且組織放射性同位素釋放倒環(huán)境中。
深地層處理是現(xiàn)今世界上解決這個(gè)問題最好的方法，并且?guī)啄昵芭_(tái)灣電力公司針對(duì)高放射廢棄物提議了一個(gè)長期的處理項(xiàng)目。
另外，多重障礙的概念是被用于克服了HLW進(jìn)入地質(zhì)層組的難題。
因此，研究放射性同位素在主巖中的轉(zhuǎn)移是非常必要。

翻譯不下去了，這么長，金幣又是那么點(diǎn)兒！

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2樓2014-06-21 15:22:39

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