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application/pdf, 論文(Article), 水稲の移植栽培における一層の効率化の1方法として,乳苗の移植前貯蔵が考えられる.本研究では,乳苗の低温貯蔵による苗素質の変化を内部形態の光学顕微鏡観察により形態学的に検討した.乳苗を5.0℃で貯蔵すると,育苗終了時の乳苗(無貯蔵苗)に較べて,葉鞘が薄くなり,第2節分げつの形成が劣ったが,冠根原基数は多くなる傾向にあった.10.0℃および 12.5℃での貯蔵では,茎の長さや大きさ,葉鞘の厚さ,分げつ芽の有無や大きさ,および葉鞘や茎の内部組織・細胞の形態は無貯蔵苗と変わらず,冠根原基の数は多くなった.そして,貯蔵した苗を移植すると,貯蔵中に増えた冠根原基が出現に至ることが確認された.これらのことから,乳苗は貯蔵すると無貯蔵に較べて冠根原基の数が増えることが明らかとなった.また,10.0℃および12.5℃で貯蔵した苗は,茎,葉鞘,分けつ芽等の形質は無貯蔵苗と変わらないまま冠根原基数が増えるため,無貯蔵苗よりも内部形態的な素質が優れるものと考えられた. \nStorage of rice nursling seedlings berore transplanting is thought to be a cost-saving technique in rice culture. The objective of this study is to clarify the morphological changes of inner structures of stored rice seedlings under low temperatures(5.0, 10.0 and 12,5℃) by means of observing every serial cross-section through the stem with a light microscope. Compared with the nursling seedlings just after raising at 5.O ℃ storage temperature, the stored seedlings showed a thinner leaf sheath and a decrcase in the number and size of the 2nd nodal tiller, but an incrcase in the number of crown root primordia. In the storage temperatures of 10.0 and 12.5℃, no changes occurred on the stemlength and size, on the size and number of nodal tillers, and on the inner strucures of leaf sheath and stem compared with the nursling seedlings just after raising, however, the number of crown root primordia incrcascd. After transplanting, the crown root primordia that had incrcased during storage emerged.These results indicate that in comparison with the nursling seedlings just after raising, the storage under low temperature before transplanting increases the number of crown root primordia of seelings without morphological changes of stem, leaf sheath, or tillers. Storage under 10.0 or 12.5℃ before transplanting is available for rooting and growth after transplanting for rice nursling seelings.

In the fuel cycle system of fusion reactors, analysis of hydrogen isotopes is very important from the view point of system control. The gas chromatograph (GC) with cryogenic separation column (cryogenic GC) is one of the most extensively used methods for the analysis of hydrogen isotopes. The micro GC with cryogenic column is expected to improve analysis time, that is a major disadvantage of conventional GC. The present authors have modified the micro GC to use its separation column at cryogenic temperature for H2, HD and D2 mixture analysis. Obtained retention time of H2, HD and D2 was about 85, 100 and 130 s, respectively. Peak resolution between H2 and HD, these are nearest each other, was about 1.0. These result suggests that the column developed in this work attained the practical level for the separation of hydrogen isotopes without tritium. Present detection limit of hydrogen isotopes was about 100–200 p.p.m., and it can be improved further by adjustment of separation column.

In order to confirm tritium confinement ability in the deuterium–tritium (DT) fusion reactor, intentional tritium release experiments have been started in a specially fabricated test stand called ‘Caisson’, at Tritium Process Laboratory in Japan Atomic Energy Research Institute. The Caisson is a stainless steel leak–tight vessel of 12 m3, simulating a reactor room or a tritium handling room. In the first stage experiments, about 260 MBq of pure tritium was put into the Caisson under simulated constant ventilation of four times air exchanges per h. The tritium mixing and migration in the Caisson was investigated with tritium contamination measurement and detritiation behavior measurement. The experimental tritium migration and removal behavior was almost perfectly reproduced and could almost be simulated by a three-dimensional flow analysis code.

The Tritium Process Laboratory (TPL) at the Japan Atomic Energy Research Institute has been working on the development of fuel processing technology for fusion reactors as a major activity. A fusion fuel processing loop was installed and is being tested with tritium under reactor relevant conditions. The loop at the TPL consists of ZrCo based tritium storage beds, a plasma exhaust processing system using a palladium diffuser and an electrolytic reactor, cryogenic distillation columns for isotope separation, and analytical systems based on newly developed micro gas chromatographs and Raman Spectroscopy. Several extended demonstration campaigns were performed under realistic reactor conditions to test tritiated impurity processing. A sophisticated control technique of distillation column was performed at the same time, and integrated fuel circulation was successfully demonstrated. Major recent design work on the International Thermonuclear Experimental Reactor (ITER) tritium plant at the TPL is devoted to water detritiation based on liquid phase catalytic exchange for improved tritium removal from waste water.

Cryogenic Molecular Sieve Bed (CMSB) is considered to be applied to the bred tritium recovery system or the helium glow discharge exhaust gas cleanup system of nuclear fusion reactor. Molecular Sie...

Soil Active Recovery Advanced Technology used PERLITE is a quality of soil improvement method of construction that was developed on the basis of PERLITE earth and sand mixture processing system., I utilized this system and understood that good quality soil of execution nature could improve soft soil because I finished use, and PERLITE let or you mix a new article PERLITE with soft viscosity soil. At the same time the PERLITE e mixture soil understood what could inflect as good borrow of water characteristic effectively.

The cryosorption method is useful for extracting hydrogen isotopes from a helium gas stream with a small amount of hydrogen isotopes. Therefore, in fusion reactors, this method is expected to be applied for the helium glow discharge exhaust gas processing system and the blanket tritium recovery system. To design these systems, adsorption isotherms for each hydrogen isotope are needed, making it possible to estimate the amount of adsorption in a wide pressure range. The amount of tritium adsorption on molecular sieve 5A, molecular sieve 4A, and activated carbon, which are potential adsorbents in the cryosorption bed, at liquid nitrogen temperature were quantified using the volumetric method, It was found that adsorption isotherms of tritium were also expressed with the two-site Langmuir model and that the obtained isotherms were close to the reported isotherms, the Langmuir coefficients for which were estimated using a reduced mass of hydrogen isotopes.

An integrated fusion fuel loop was constructed. A palladium diffuser first treated a simulated plasma exhaust gas, that is a mixture of hydrogen isotopes and impurities such as helium and methane. ...

Although lithium ceramic materials such as Li 2 O, LiAlO 2 , Li 2 ZrO 3 and Li 4 SiO 4 are considered as breeding materials in the blanket of a D-T fusion reactor, the release behavior of the bred tritium in these solid breeder materials is not yet fully understood. Most results of in situ tritium release experiments are analyzed assuming that the overall release process of tritium is mainly controlled with tritium diffusion in the crystal grain of a solid breeder material. However, the diffusivities by various authors for solid breeder materials do not agree with each other. An insufficient estimation of the surface reactions, the effect due to irradiation defects or the system effect may be the reason. Effects of diffusion of tritium in the grain, absorption of water in the bulk of grain, and adsorption of water on the surface of grain, together with two types of isotope exchange reaction on the tritium inventory in the steady-state condition, are discussed in this study. Comparisons of tritium inventory estimated in this study with data obtained in several in-situ experiments are also performed, and good agreement is obtained when the existence of some water vapor is assumed in the purge gas.

To understand the release behavior of bred tritium in a solid breeder blanker, the tritium transfer rate and tritium inventory for various mass transfer processes should be investigated. The contribution of the surface reactions (adsorption, desorption and two kinds of isotope exchange reactions) to the release process cannot be ignored. It is believed that two kinds of isotope exchange reactions (gaseous hydrogen-tritiated water and water vapor-tritiated water) occur on the surface of the solid breeder materials when hydrogen is added to the sweep gas to enhance the tritium release rate. The isotope exchange reaction study in H–D systems was carried out using a Li 2 ZrO 3 packed bed. The exchange reaction between gaseous hydrogen and water was the rate controlling step among the two kinds of exchange reactions. The reaction rate constants were quantified, and experimental equations were proposed. The equilibrium constant of the isotope exchange reaction in the H–D system was obtained from experimental data and was found to be 1.17.

Asymmetric induction was examined in the cyclopolymerization and cyclocopolymerization of N-allyl-N-phenylmethacrylamide (PAMA) with dimethyl 2,2‘-azobis(isobutyrate) in benzene in the presence of ...

Though lithium ceramic materials such as Li2O, LiAlO2, Li2ZrO3 and Li4SiO4 are considered as the candidates of tritium breeding materials in the blanket of a D-T fusion reactor, the release behavior of the bred tritium in these solid breeder materials is not yet fully understood. It is observed in this study that LiAlO2 or Li4SiO4 has an additional capacity for tritium uptake on the surface through isotope exchange reactions, the isotope exchange capacity, other than the adsorption capacity. It is considered that some -OH bases attributed to the strongly bound chemically adsorbed water or the crystal water formed on the grain surface act as tritium trap, when the isotope exchange reaction are active. It is also observed in this study that Li2ZrO3 has no isotope exchange capacity. Effects of the isotope exchange capacity on the tritium inventory in the breeding blanket is discussed based on the data observed in this study where effects of diffusion of tritium in the grain, absorption of water in the bulk of grain and adsorption of water on the surface of grain together with isotope exchange reactions are considered.

Although lithium ceramic materials such as Li2O, LiA1O2, Li2ZrO3 and Li4SiO4 are considered as breeding materials in the blanket of a D-T fusion reactor, the release behavior of the bred tritium in these solid breeder materials has not been fully understood. Most of the results of in situ tritium release experiments are analyzed assuming that the overall release process of tritium is mainly controlled with the process of tritium diffusion in the crystal grain of a solid breeder material. However, it has been pointed out by many authors that contribution of the surface reaction cannot be ignored. Effects of diffusion of tritium in the grain, absorption of water in the bulk of grain and adsorption of water on the surface of grain together with isotope exchange reactions on the tritium inventory under the steady state condition are discussed in this study. Comparison of the estimated tritium inventory using the way of this study with the data obtained in several in situ experiments shows that good agreements are obtained when the effective diffusivity obtained from the data by Kwast et al. is used. The better agreements are obtained when existence of some water vapor is assumed in the purge gas.

Thalidomide (TM) induces limb defects in humans and some animal species including rabbits. Although the mechanism of TM-induced limb defects has been investigated for a long period, the limb development-related genes expressions have not been vigorously characterized in rabbits. In this study, we investigated the Fgf8, Bmp4 and Hoxa11 expressions in TM-treated JW rabbit embryos on gestation days (GDs) 10, 11 and 12 by whole mount in situ hybridization. On GDs 10 and 11, growth retardation of the embryo was induced by TM treatment. The Fgf8 expression lengths on GDs 10 and 11 in the forelimb bud were significantly or tended to be decreased in the TM-treated embryos, which was correlated to the growth retardation and was not considered to be directly relevant to the teratogenic effect of TM in the forelimb. The TM-induced characteristic changes in the expression pattern of Hoxa11 and Bmp4 on GDs 10 and/or 11 were not noted. On GD 12, TM-induced growth retardation was not noted and the Fgf8 and Bmp4 expressions were not changed. On the contrary, Hoxa11 expression was narrowed at the anterior region, which was located on the radial side, and was not changed at the middle and posterior regions in the forelimb bud and in all regions in the hindlimb bud. Because the radius malformations were induced by TM treatment, we concluded the decrease in the Hoxa11 expression was related to the TM-induced limb defects and can be a good marker for early prediction of the teratogenic effect of TM.

The effects of thalidomide on the embryo-fetal development (EFD) of rabbit fetuses and the sensitive periods (SP) for the various malformations were compared between Kbl:JW and Kbl:NZW rabbits to investigate possible strain differences. The post-implantation loss rate and number of placental remnants were increased and the number of live fetuses was decreased in both of the strains in the EFD study and in Kbl:NZW at 300 mg/kg dosed on GD 7-8 in the SP study. In the external and skeletal examinations, head, limb and tail malformations were observed in both the strains in the EFD and SP studies at the same dose levels in the same dosing period. In the visceral examination, hydrocephaly, cardiovascular malformations, absent pulmonary intermedial lobe, diaphragmatic hernia and/or abnormal liver lobation were also observed in both of the strains in the EFD and SP studies at the same dose levels and in the same dosing period. Plasma concentrations of thalidomide were equivalent between the two strains in the SP study. There were strain differences in some parameters, such as the post-implantation loss rate and the frequencies of malformations in forelimb and hindlimb and pulmonary intermedial lobe, but similar types of malformations or variations were induced at the same dose levels on the same dosing period in both strains. Therefore, it is concluded that there were no essential differences in sensitivity of the fetuses to thalidomide between Kbl:JW and NZW rabbits and both of the strains are useful to evaluate the teratogenic effects of thalidomide.

This work presents demonstrative test results of CMSB by simulated helium glow discharge exhaust gas condition in 60 l/min of flow rate. This work focused on H{sub 2} and HT adsorption and regeneration performance of CMSB and optimum regeneration procedure, so that the operation cycle time becomes smaller. Test results showed consistency with bench-scale experiments. Obtained engineering data are applicable for the design of the CMSB process for ITER He GDC gas cleanup. As the results of this work, it was demonstrated that CMSB process could clean up 54.3 SLM of He stream with H{sub 2}(400) ppm+HT(0.5 ppm). Regeneration performance in various total pressure were obtained and evaluated by the calculation and clarified necessary information for determining the optimum regeneration procedure of CMSB which allow continuous operation in the shorter period of operation cycle (adsorption and regeneration). 6 refs., 5 figs., 1 tab.

The effects of SnCl 4 on the radical polymerization of N-allyl-N-phenylmethacrylamide (APM) and N-allyl-N-phenylacrylamide (APA) were investigated. The polymerizations of APM and APA with dimethyl 2,2-azobisisobutyrate (MAIB) were carried out at 50°C in benzene at various concentrations (0-1.0 mol/L) of SnCl 4 . The polymerization rates showed a maximum on varying the SnCl 4 concentration, while the molecular weights of the resulting poly(APM) and poly(APA) were decreased with increasing SnCl 4 concentration. In both systems, the degree of cyclization of polymers were decreased with the SnCl 4 concentration. From the IR results, the cyclic structure of the resulting poly(APM)s was confirmed to be five-membered, whereas poly(APA)s contained not only five-membered but also six-membered rings. The 1 H-NMR examination on the interactions of APM and APA with SnCl 4 revealed that these monomers form 1 :1 and 2 :1 complexes with SnCl 4 with fairly large stability constants. Copolymerizations of APM (M 1 ) with methyl methacrylate (MMA) and styrene (St) (M 2 ) were investigated at 60°C in benzene in the absence of SnCl 4 . APM units were found to be incorporated exclusively as five-membered rings in the resulting copolymer. Monomer reactivity ratios were estimated to be r 1 = 0.29, r 2 = 4.88 for APM/MMA and r 1 = 0.66, r 2 = 5.39 for APM/St. The presence of equimolar (to APM) SnCl 4 was found to enhance the reactivity of APM toward poly(MMA) radical ; r 1 = 0.24, r 2 = 2.56.

The FASB staff has conducted a detailed review of derivatives disclosures in 1994 annual reports. And while most disclosures seemed adequate, there were some problems. Some disclosures may have been incomplete, or less detailed than required.

The effective tritium recovery system should be designed to recover tritium from DT reactor blanket sweep gas in a form easy to transfer to the main fuel cycle. The cryosorption method using a porous adsorbent at the temperature of liquid nitrogen is one of the candidate processes for extracting tritium from hydrogen-swamped helium sweep gas because it has advantages of a large recovery capacity of gaseous tritium and good releasability of recovered tritium to the next process. In order to quantify the performance of the cryosorption method in recovering hydrogen isotopes from hydrogen-swamped helium sweep gas flow, the adsorption capacity and separation factor for multicomponent hydrogen isotope mixtures in helium on molecular sieve 4A (MS4A), molecular sieve 5A (MS5A) and activated carbon at 77.4 K were measured. 8 refs., 3 figs., 2 tabs.

Experimental results showed that Q2 gas was adsorbed effectively by CMSB on an early stage of breakthrough even though CH4 exists in the inlet gas. Particularly, in the case of Q2 with low concentration of CH4, the break through curve of Q2 showed almost the same curve as in the case of pure Q 2 adsorption. However, CH 4 gas spilled over adsorbed Q 2 in the course of CH 4 break-through. This means that the CMSB will eventually lose the ability to adsorb Q 2 in the final stage of adsorption. The critical time when the CMSB loses the adsorption ability depends on the inlet CH 4 concentration. Analysis of the results showed that the adsorption of Q 2 and CH 4 mixture can be roughly described by assuming the multi-component adsorption equations for Q 2 and CH 4 using Langmuir's equations. It was certified that the analysis model described and predicted the experimental observations very well.

Lithium metazirconate (Li2ZrO3) is one of the probable candidates for the tritium breeding material because of its potential to give a fair tritium breeding ratio, stability at high temperature and stability in atmosphere containing water vapor. Investigation of the adsorption performances of water vapor on Li2ZrO3 is important for optimization of the way to recover bred tritium from Li2ZrO3, for estimation of tritium inventory in the breeding blanket and for quantification of the hydrogen isotope exchange reaction. The amount of water vapor captured on Li2ZrO3 was studied in the temperature range of 393–1073 K using the breakthrough method, and adsorption isobars and isotherms of water vapor on Li2ZrO3 were proposed based on the data obtained. The water capture phenomenon was attributed to the dissociative adsorption, and the apparent heat of adsorption was determined to be 10.7 kJ/mol. The tritium inventory due to sorption for Li2ZrO3 was compared with those for Li20, LiA1O2 and Li4SiO4. Furthermore, the tritium inventory in the blanket due to sorption was compared with that due to diffusion in the crystal grain.

The release behavior of tritium bred in the blanket has been studied with in-situ experiments, and most of the results are analyzed assuming that the overall release process of tritium is mainly co...

We retrospectively analyzed the reproductive variables and the spontaneous malformations in the historical control data from the embryo-fetal development studies conducted in our laboratories with Kbl:JW rabbits over two decades (1990-2010) and fetal malformations induced by thalidomide in 1988, 1995 and 2007. These analyses in the control animals revealed that the reproductive variables in dams, total frequencies and profile of external, visceral and skeletal abnormalities and/or variations in the fetuses were stable over two decades. In addition, the characteristics of the malformations induced by thalidomide were reproducible at the three time points. Therefore, it is concluded that Kbl:JW rabbit is one of the useful rabbit strains to evaluate the effects of test substances on embryo-fetal development, especially in view of the chronological stability of spontaneous or drug-induced malformations in the fetuses.

Experiments were performed to obtain detailed adsorption and desorption characteristics of tritium (HT) by Cryogenic Molecular Sieve Bed (CMSB) in liquid nitrogen temperature under the simulated Breeding Blanket Interface (BBI) condition. Computer simulation analyses gave the values of separation factor and mass transfer coefficient of HT in H{sub 2}, which are very important basic parameters for the optimum design of CMSB process in BBI.

1)世界各地から収集したアワ種子の内,胚乳のヨウ素呈色反応から澱粉のアミロース含量:の比較的高いもの(試料A,B),中位のもの(試料C,D)およびもち種と想定されるもの(試料E,F)について澱粉の特性を調べた.澱粉のアミロース含量(酵素・クロマト法による画分1)は,AとBは約31%,C22%,D14%,EとFは0%で,AとBは比較的高く,CとDは中程度,EとFは想定した通りもち種であった.アミロペクチンの鎖長分布にはほとんど差がなかった.DSC糊化特性は,糊化開始(To)・ピーク(Tp)・終了(Tc)温度がそれぞれ64～69,70～77,76～84℃の範囲にあり,糊化熱(dH)は10.0～18.OJ/9の範囲であった.各澱粉粒の酵素分解はトウモロコシ澱粉粒の2～3倍程度分解が進み,他の穀物澱粉粒の場合にも見られたようにもち種の澱粉粒はうるち種のものより分解されやすい傾向であった.2)澱粉・ヨウ素複合体吸収曲線の特性値のうち最大吸収を示す波長λmaxと青価(680nmによる吸光度)との間には高い正の相関があり,また青価は酵素・クロマト法による画分1あるいは示差走査熱量測定による糊化熱との間にそれぞれ高い正および負の相関を示すことがわかった.

Lithium aluminate (LiAl02) is one of the probable candidates for tritium breeding material because of its potential to give a fair tritium breeding ratio, stability at high temperature and stabilit...

Lithium oxide is one of the most potential breeding materials among the various candidates because of its high melting point and high lithium atomic density and preferable capability to give a large tritium breeding ratio. Leak of a fair amount of water to the blanket purge gas from the cooling water system is anticipated from the experience at the cooling system of fission reactors. Then, the behavior of lithium hydroxide formed in the lithium oxide blanket must be understood because lithium oxide is highly reactive with water vapor. In this work, the relation of the partial pressure of LiOH(g) with temperature or pressure of water vapor is studied experimentally, and the effect of Li transfer from the blanket on tritium recovery is also discussed.

This paper discusses the behavior of tritium on the surface of various piping materials considering the various mass transfer steps. It is observed in this study that the isotope exchange reaction between gaseous hydrogen in gas stream and surface water and transfer of hydrogen isotopes and water through surface layer formed on materials or pores are most effective when an oxide film layer is formed on a material surface such as stainless steel. The amount of tritium sorbed on the stainless steel is correlated and compared with that observed for copper or quartz. The memory effect observed for an ionization chamber having stainless steel electrodes is also compared with that having copper electrodes.

In Drosophila, the PIWI proteins, Aubergine (Aub), AGO3, and Piwi are expressed in germlines and function in silencing transposons by associating with PIWI-interacting RNAs (piRNAs). Recent studies show that PIWI proteins contain symmetric dimethyl-arginines (sDMAs) and that dPRMT5/Capsuleen/DART5 is the modifying enzyme. Here, we show that Tudor (Tud), one of Tud domain-containing proteins, associates with Aub and AGO3, specifically through their sDMA modifications and that these three proteins form heteromeric complexes. piRNA precursor-like molecules are detected in these complexes. The expression levels of Aub and AGO3, along with their degree of sDMA modification, were not changed by tud mutations. However, the population of transposon-derived piRNAs associated with Aub and AGO3 was altered by tud mutations, whereas the total amounts of small RNAs on Aub and AGO3 was increased. Loss of dprmt5 did not change the stability of Aub, but impaired its association with Tud and lowered piRNA association with Aub. Thus, in germline cells, piRNAs are quality-controlled by dPRMT5 that modifies PIWI proteins, in tight association with Tud.

PIWI-interacting RNAs (piRNAs) silence retrotransposons in Drosophila germ lines by associating with the PIWI proteins Argonaute 3 (AGO3), Aubergine (Aub) and Piwi. piRNAs in Drosophila are produced from intergenic repetitive genes and piRNA clusters by two systems: the primary processing pathway and the amplification loop. The amplification loop occurs in a Dicer-independent, PIWI-Slicer-dependent manner. However, primary piRNA processing remains elusive. Here we analysed piRNA processing in a Drosophila ovarian somatic cell line where Piwi, but not Aub or AGO3, is expressed; thus, only the primary piRNAs exist. In addition to flamenco, a Piwi-specific piRNA cluster, traffic jam (tj), a large Maf gene, was determined as a new piRNA cluster. piRNAs arising from tj correspond to the untranslated regions of tj messenger RNA and are sense-oriented. piRNA loading on to Piwi may occur in the cytoplasm. zucchini, a gene encoding a putative cytoplasmic nuclease, is required for tj-derived piRNA production. In tj and piwi mutant ovaries, somatic cells fail to intermingle with germ cells and Fasciclin III is overexpressed. Loss of tj abolishes Piwi expression in gonadal somatic cells. Thus, in gonadal somatic cells, tj gives rise simultaneously to two different molecules: the TJ protein, which activates Piwi expression, and piRNAs, which define the Piwi targets for silencing.

Genetic studies have shown that Aubergine (Aub), one of the Piwi subfamily of Argonautes in Drosophila, is essential for germ cell formation and maintaining fertility. aub mutations lead to the accumulation of retrotransposons in ovaries and testes, and Stellate transcripts in testes. Aub in ovaries associates with a variety of Piwi-interacting RNAs (piRNAs) derived from repetitive intergenic elements including retrotransposons. Here we found that Aub in testes also associates with various kinds of piRNAs. Although in ovaries Aub-associated piRNA populations are quite diverse, piRNAs with Aub in testes show a strong bias. The most abundant piRNAs were those corresponding to antisense transcripts of Suppressor of Stellate [Su(Ste)] genes known to be involved in Stellate gene silencing. The second most abundant class was made up of those from chromosome X and showed strong complementarity to vasa transcripts. Immunopurified Aub–piRNA complexes from testes displayed activity in cleaving target RNA containing sequences complementary to Stellate and vasa transcripts. These results provide the first biochemical insights into gene silencing mechanisms mediated by Aub and piRNAs in fly testes.

In this paper, we discussed methods for recovering from communication failures due to route hijacking. Looking ahead we intend to pursue further work on systemization, authentication, and evaluation.

The outdoor service robot, which we call OSR-02, is presently under development intended for cleaning up urban areas by means of collecting discarded trash such as plastic bottles, cans, plastic bags and so on. Additionally, we have developed a novel sensor system for the achievement of the task by this robot; it is constructed with LRF (Laser Rnagefinder), two cameras, and three stepping motors. In this paper, we describe the sensor system and its applications.

This paper discusses a VP bandwidth management with connection admission control (CAC) based on traffic measurements. i.e.. Dynamic CAC, in ATM networks. Dynamic CAC initially assigns a bandwidth equivalent to its peak cell rate for a new connection and then corrects it after traffic measurement. So Dynamic CAC has the advantage of statistical multiplexing gain, even when only the peak cell rate is notified to the network. To use Dynamic CAC effectively, however, it is important to appropriately set a parameter that specifies the weight of traffic characteristics in deciding admission. This parameter is called a smoothing parameter. This paper develops a method of designing the smoothing parameter.

A water-cooling solid breeder blanket is a prime candidate for the blanket of the fusion reactor in Japan. In this case, the blanket tritium recovery system will be composed of three processes: tritium recovery from helium sweep gas as hydrogen, that as water vapour and tritium recovery from coolant water. The authors have proposed a set of advanced systems. For tritium recovery as hydrogen, an electrochemical hydrogen pump with a ceramic proton conductor has been proposed. The correlation between the proton concentration in the ceramic and the hydrogen gas pressure has been investigated to describe the pumping performance specifically. A ceramic electrolysis cell has been proposed to process the tritiated water vapour. The authors have developed a new electrode containing cerium oxide, and it has shown fairly good electrolysis efficiency. For tritium recovery from coolant water, reduction in the processing water by tritium concentration is necessary. The authors have proposed to apply the fixed-bed adsorption process of synthetic zeolite, and have developed new zeolite. It showed unique characteristics for water adsorption and desorption. The authors have determined the potential of these systems for the blanket of the fusion DEMO reactor.