★★★ ＜知的財産翻訳検定【第４回<和文英訳>試験】＞答案用紙 ★★★
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科 目： 化学

氏 名： 中島 拓==========================================================================＜選択問題解答＞【問１】
1. An aluminum alloy cladding material for a heat exchanger having improved
brazability, corrosion resistance and hot rolling workability,
the cladding material being a four-layered aluminum alloy cladding material
comprising a core material, a sacrificial anode material, an intermediate material and abrazing material,
the core material being clad with the sacrificial anode material on one side and withthe brazing material via the intermediate material on the other side,
the core material comprising Mn: 0.8 to 1.8 mass %, Mg: 0.1 to 1.0 mass %, the balance
Al and inevitable impurities,
the sacrificial anode material comprising Mn:0.8 to 1.8 mass %､Zn:0.5 to 10 mass %,the balance Al and inevitable impurities,
the intermediate material comprising Mn:0.8 to 1.8 mass %, the balance Al andinevitable impurities,
the brazing material comprising Si:6 to 13 mass ％, the balance Al and inevitableimpurities.
2. The aluminum alloy cladding material of claim 1 wherein the intermediate material
further comprises
one or more of Si:0.7 to 1.1 mass %, Fe:0.5 to 1.0 mass %, Cu:0.8 mass % or less, Zn:0.5
to 10 mass %,Ni:0.1 to 1.0 mass %, Cr:0.02 to 0.3 mass %, Zr:0.02 to 0.3 mass %, and Ti:0.05 to 0.35
mass %,
provided that Cu and Zn are not present simultaneously.
3. The aluminum alloy cladding material of claim 1 or 2
wherein the ratio of the brazing material deformation resistance to the core material
deformation resistance,
the ratio of the intermediate material deformation resistance to the core materialdeformation resistance,
and the ratio of the core material deformation resistance to the sacrificial anodematerial deformation resistance are in a range of 0.7 to 1.4.
【問 2】
【０００２】A carbon nanotube (CNT) is composed of carbon atoms and is a tubular material
having diameter of nanometer order.
Much attention is paid to it as a nanomaterial. CNTs are produced by methods such asarc discharge, laser vaporization and chemical vapor deposition (CVD).
Japanese Patent No. 3183845 discloses that a carbon nanotube film is formed byheating silicon carbides at 1200 to 2200 degrees C in vacuo.
【０００３】
CNTs include single-wall carbon nanotubes composed of one layer of tubular graphite
and multi-wall carbon nanotubes composed of concentric multilayer of the single-wall
CNTs.
The single-wall CNTs show different electric conductivities according to the chirality ofgraphite.
Specifically, the CNTs are classified into armchair type, zigzag type, and chiral type,etc.

The CNTs of armchair type exhibit metallic conductivity.

The CNTs of zigzag or chiral type exhibit semiconductor-like properties or metallic
conductivity depending on their spiral structures.
The CNT exhibiting semiconductor-like properties (herein after called “carbonnanotube semiconductors”) may have an electron mobility ten times higher than that ofsilicon.
The use of carbon nanotube semiconductors may therefore lead to a device withextremely higher performance compared with the conventional silicon devices.

【問 3】【００３１】
Example 1
Aerobic nitrifying granules were placed into a 1.5 L beaker as MLSS in aconcentration of 2500 mg/L,
while ammonium-nitrogen was added in a concentration of 150 mg/L to initiate theexperiment.
The concentration of nitrate nitrogen was measured over time to calculate thenitration rate.
In this experiment, the concentration of dissolved oxygen (DO) in each beaker was set
to 0.2, 0.5, 1, 2, 3, 5, 8, 10, or 15 mgO/L,
which was adjusted by supplying air, nitrogen or oxygen while measuring DO in thereaction liquid.
The experiment was carried out at 20 degrees C.
【００３２】
Table 2 shows the result of studying the influence of DO on the nitration rate of theaerobic granules.
It was confirmed that higher DO in the reaction liquid increases the nitration rate.
It was also confirmed that DO of 0.5 mgO/L or more was able to achieve the nitration
rate of about 10 mgN/L･Hr or more
and that the nitration rate was not further increased even when DO was adjusted to 8
mgO/L or more by using oxygen.