化学

第１０回知的財産翻訳検定試験＜和文英訳＞１級化学【標準解答】[問1]
1.

An organic semiconductor gas sensor comprising:a conductive substrate;
a photosensitive layer on the conductive substrate, the photosensitive layer

comprising a charge generation layer and a charge transport layer, eachcomprising an organic semiconductor material;a metal electrode on top of the photosensitive layer;
lead wires connected to the top of the metal electrode and to an end portionof the conductive substrate, respectively;
a voltage generator that is capable of applying a DC voltage across thethickness of the metal electrode and that forms a closed circuit with theconductive substrate via the lead wires;a current detector provided between the voltage generator and the lead wirefrom the conductive substrate; anda heater for heating the photosensitive layer, the heater being provided in
the neighborhood of the photosensitive layer.
2.

The organic semiconductor gas sensor according to claim 1, wherein thecharge generation layer and the charge transport layer are provided in thatorder on the conductive substrate.
3.

The organic semiconductor gas sensor according to claim 1, wherein thecharge generation layer comprises an azo pigment.
(180 words)[問2][0002]
A bacterium of the genus Thermosynechococcus is known to be a useful
tool that serves as a host cell for mass producing plant metabolites orthermostable proteins. With a view to using this bacterium for the statedpurpose, electroporation has heretofore been commonly applied as a means fortransferring a gene into the bacterial cell. In electroporation, an electric pulse is
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applied to the host cell to make a pore in the cell membrane, through which an
exogenous gene can be transferred into the host cell and integrated into its
genome.
[0003]
Introducing genes by electroporation is an effective method which iscommonly used in the art. Unfortunately, electroporation has the following
problems to be solved before it can be applied in transferring genes into abacterium of the genus Thermosynechococcus.
(1) An expensive apparatus (electroporator) is required to apply electric pulses tocells.
(2) It takes as long as 3-4 weeks to establish a transformed strain into which thegene of interest has been transferred.
(3) Endogenous genes in the bacterium are destroyed during the process of genetransfer.
(4) The transformed strain is not amenable to sustained culture at an optimum
temperature for the growth of the bacterium.
(201 words)[問3][0048][Example 1]
A gaseous mixture of 20 vol% carbon dioxide and 80 vol% nitrogen wasused as a model of blast furnace gas or exhaust gas from hot blast stoves, andmolecular sieve 13X (zeolite) was used as an adsorbent to recover carbon dioxidefrom the gaseous mixture.
[0049]A cylindrical quartz pipe having an inside diameter of 3.8 cm and a lengthof 100 cm was packed with 40 g of the adsorbent; and the gaseous mixture wasintroduced into one end of the quartz pipe under the conditions of 2 L/min andabout 40 C and was discharged from the other end to allow the adsorbent toadsorb the carbon dioxide in the gaseous mixture until saturation. The- 2 -化学concentration of carbon dioxide in the effluent gas from the quartz pipe wasmonitored, and saturation was confirmed by finding that the concentration
reverted to 20 vol% after first dropping below 20 vol% on account of adsorption.
[0050]
Subsequently, while the gaseous mixture was kept flowing, microwaves of2450 MHz and 200 W were applied for 2 minutes to cause the carbon dioxide todesorb from the adsorbent. Throughout this desorption process, theconcentration of carbon dioxide in the effluent gas was measured continuously,
and in the period when the measured value exceeded 20 vol% (i.e., the initialconcentration of carbon dioxide in the gaseous mixture), the differential
concentration was integrated to estimate the amount of the adsorbed and thendesorbed carbon dioxide.
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