Oita Prefecture Research Articles

Adachiite, a Si–poor member of the tourmaline supergroup from the Kiura mine, Oita Prefecture, Japan

Adachiite, CaFe3Al6(Si5AlO18)(BO3)3(OH)3(OH), a Si–poor member of the tourmaline supergroup, is found in the hydrothermal vein cutting emery from Nabagasako of the Kiura mine, Saiki City, Oita Prefecture, Japan. Adachiite occurs as a constituent (several to 300 µm thickness) of hexagonal prismatic crystals, and forms a zoned structure closely associated with schorl. It is transparent with brownish–purple to bluish–purple color, while the massive aggregate shows black in color. Adachiite is trigonal, R3m, a = 15.9290(2), c = 7.1830(1) Å, V = 1578.39(4) Å3, and Z = 3, determined via single crystal XRD refinement (R1 = 0.038). Adachiite is the first member of the tourmaline group formed via Tschermak–like substitution.

長濱祭 ―大分県 長濱神社 地方都市の夏祭り―

長濱祭 ―大分県 長濱神社 地方都市の夏祭り―

Molecular survey of Babesia gibsoni using Haemaphysalis longicornis collected from dogs and cats in Japan.

ABSTRACTA nationwide survey of Babesia gibsoni using Haemaphysalis longicornis collected from dogs and cats in Japan was conducted using molecular methods. A total of 1,341 H. longicornis, including 305 females, 14 males, 332 nymphs and 690 larvae (153 pools) from 44 prefectures, were examined by B. gibsoni-targeted PCR. Partial sequence analysis revealed that 12 of 13 positive samples sequenced, including samples from Tottori, Hiroshima, Yamaguchi, Tokushima, Ehime and Oita prefectures (all in western Japan), were identical to B. gibsoni, and 1 sample from Kyoto Prefecture was most closely related to a Babesia species recently detected from feral raccoons in Hokkaido. H. longicornis is a candidate for transmission vector tick of the new Babesia species.

Trends in foodborne illness in Oita prefecture

Trends in foodborne illness in Oita prefecture

大分県の夏秋ピーマンにおけるミカンキイロアザミウマ個体群の 薬剤殺虫効果とスピノサド感受性低下個体群の初確認

大分県の夏秋ピーマンにおけるミカンキイロアザミウマ個体群の 薬剤殺虫効果とスピノサド感受性低下個体群の初確認

Survey of dysphagia diet in five hospitals located in Oita Prefecture: Analysis by level of free amino acids in dysphagia diets meal standard

Survey of dysphagia diet in five hospitals located in Oita Prefecture: Analysis by level of free amino acids in dysphagia diets meal standard

大分県因尾，宇目地区における昭和前期の釜炒り茶

大分県因尾，宇目地区における昭和前期の釜炒り茶

One Village One Product (OVOP) in Japan to One Tambon One Product (OTOP) in Thailand: Lessons for Grass Root Development in Developing Countries

Following the 1997 Asian Financial Crisis, Thailand’s economy which did rely on external capital and resources suffered from an imbalanced economic growth. As a solution to the economic restructuring process, endogenous development concept proved to be an alternative development paradigm which prioritizes the community development, human empowerment in the transformation of local resources. Accordingly, One Tambon One Product (OTOP) was designed to unlock grass-root potentials by generating income through developing local products in a national, regional, and global scale. This initiative was first developed under the name of One Village One Product (OVOP) by local people in the poorest Oita Prefecture, Japan in 1961. The aim of the paper is to compare two development models of OVOP and OTOP. The comparative study draws useful lessons from the experience of OTOP for future applications of the OVOP model in developing economies. The paper finds that there are inevitable differences in terms of administration, finance management, human resource management, and marketing promotion management between bottom-up OVOP in Japan and top-down OTOP because of social diversity, political culture, and economic capability in Thailand. The paper contributes to provide a comparative study into models of sustainable development in the context of increasing gap between the urban and rural in globalization.

Prevalence and Characteristics of Listeria monocytogenes in Feces of Black Beef Cattle Reared in Three Geographically Distant Areas in Japan

This study was conducted to determine the prevalence and characteristics of Listeria monocytogenes in the feces of black beef cattle reared in geographically distant areas in Japan. We surveyed 130 farms in the following three areas: northern (Hokkaido prefecture), central (Gifu and Mie prefectures), and southern (Oita, Miyazaki, and Kagoshima prefectures) areas and collected 1738 fecal samples. Our data showed the following isolation rate for each area: northern, 11.4% of 651; central, 2.8% of 572; and southern, 2.9% of 515, indicating that the isolation rate in the northern area was significantly higher than that in the central or southern areas (p<0.01). Moreover, serotyping of 996 isolates identified 1/2b as the most prevalent serotype (40.5%), followed by 1/2a (36.9%), 4b (21.6%), and 4ab (1.0%). In the northern area, multiple serotypes were isolated from 60% of L. monocytogenes-positive farms. In addition, multiple serotypes were isolated from individual fecal samples from 18 cattle. Pulsed-field gel electrophoresis (PFGE) characterization of 239 isolates detected 48 different PFGE types. We found that isolates from northern farms were genetically diverse compared to those from central and southern farms. Five isolates from human clinical cases and three isolates from animal clinical cases were identical to isolates from black beef cattle. Furthermore, the isolates from northern and central farms were characterized to possess epidemic clone II or III markers. We next showed that the isolates were susceptible to penicillin, ampicillin, amoxicillin, gentamicin, kanamycin, streptomycin, erythromycin, vancomycin, tetracycline, chloramphenicol, ciprofloxacin, and trimethoprim/sulfamethoxazole. Taken together, our survey provides crucial data regarding the prevalence and characteristics of L. monocytogenes in black beef cattle farms throughout Japan.

金鱗湖(大分県湯布院町)の珪藻

金鱗湖(大分県湯布院町)の珪藻

Comparative study reveals unique features of the mycobiota in peat soils samples from Japan and Scotland

We isolated filamentous fungi from soil samples of peat layers in Aomori and Oita Prefectures in Japan and Perth and Kinross district in Scotland by a serial dilution plate technique. The mycobiota in each peat soil showed some common and characteristic features. The abundance of fungal isolates (CFU/g) from peat soil was low: about 1/3 to 1/30 compared with evergreen or coniferous forests or cultivated soil. Trichoderma or Mucorales species were scarcely observed; these fungi occupied only 3% of the total number of colonies. On the other hand, fungi such as Conioscypha and Tolypocladium that are normally isolated rather rarely were encountered at a comparatively high rate. Acremonium guillematii and Tolypocladium cylindrosporum were recorded for the first time in Japan. Sterile fungi occupied 50% of the total number of isolates. The low abundance of fast-growing fungi enabled us to pick slow-growing fungi up easily from the isolation medium. It is interesting that species not previously described in Japan, or scarcely reported, were isolated commonly from both Japanese and Scottish samples. A peat soil sample is therefore an attractive source of untapped microbial resources.

Multiple marker effects of single nucleotide polymorphisms in three genes, AKIRIN2, EDG1 and RPL27A, for marbling development in Japanese Black cattle

Marbling in beef, measured by Beef Marbling Standard (BMS) number, is an economically important trait for beef cattle breeding and markets in Japan. We previously detected three single nucleotide polymorphisms (SNPs) associated with BMS number of Japanese Black in Oita prefecture: c.*188G>A in AKIRIN2, g.1471620G>T in EDG1 and g.3109537C>T in RPL27A. Here, we carried out single and multiple marker association analyses for the three SNPs in a different commercial Japanese Black population of 892 genotyped animals. The single marker analyses with the model including a single SNP showed significant associations of all SNPs with BMS number. The multiple marker analysis with the model including the main effects of the three SNPs and their interactions detected only significant main effects of g.1471620G>T and g.3109537C>T and a significant interaction between c.*188G>A and g.1471620G>T. These findings suggest the presence of inter-allelic interactions among genes affecting the development of beef marbling. For effective marker-assisted selection for BMS number, interactions among these markers need to be considered.

Thrust nappe of the Lower Cretaceous in the Chichibu Terrane,Oita Prefecture

Thrust nappe of the Lower Cretaceous in the Chichibu Terrane,Oita Prefecture

大分県玖珠郡のイタドリ群落に発生するさび病と 内生糸状菌との関係

大分県玖珠郡のイタドリ群落に発生するさび病と 内生糸状菌との関係

Talmessite from the Uriya deposit at the Kiura mining area, Oita Prefecture, Japan

Talmessite from the Uriya deposit at the Kiura mining area, Oita Prefecture, Japan

Mass Balance from Gravity in the Takigami Geothermal Reservoir, Oita Prefecture, Japan

In order to utilize the geothermal resources sustainably, it is necessary to monitor and recognize the behavior of geothermal reservoirs. We have continued the geothermal reservoir monitoring by using gravity measurement since 1991 in Takigami geothermal area. We, however, had measured only relative gravity and we assumed the gravity at the reference station doesn’t change. Therefore, we introduced an A10 absolute gravimeter (Micro-g LaCoste, Inc.) since 2008.As a result of absolute gravity measurements, the gravity change at the reference station (T1), which is within about 10μgal, is small enough to judge relative gravity measurements appropriate. Therefore, we judged that the gravity change detected by the relative gravity measurements illustrated the mass transfer in the geothermal reservoir. We have calculated the mass balance in the Takigami geothermal system. And, we can divide study areainto 3 areas from the pattern of the loci of the gravity change after starting production and reinjection of geothermal fluid in the Takigami geothermal power plant. Moreover, we can estimate the 4 stages of geothermal fluid flow pattern from temporal gravity change. Based on these classifi cations, we led a conceptual model of the Takigami geothermal system.

Regional Development of Traditional Seafood Meals in Oita Prefecture

Regional Development of Traditional Seafood Meals in Oita Prefecture

外科勤務医が「外科医増員を必要と感じる」要因について

外科勤務医が「外科医増員を必要と感じる」要因について

No replicated association of the c.-312A &amp;gt; G in&amp;lt;i&amp;gt; EDG&amp;lt;/i&amp;gt;1 with marbling in Niigata population of Japanese Black beef cattle

Marbling, defined by the amount and the distribution of intramuscular fat and measured as beef marbling score (BMS), is an economically important trait of beef cattle in Japan. We recently reported that a single nucleotide polymorphism (SNP), namely, c.-312A > G, in the endothelial differentiation sphingolipid G-proteincoupled receptor, 1 (EDG1) gene was associated with the BMS level in the Japanese Black beef cattle population of Oita prefecture, with the G allele being associated with a high level of the BMS. Thus, the c.-312A > G SNP seems to be a candidate marker for marker-assisted selection. In this study, we investigated whether this association could be replicated in the Japanese Black beef cattle population of Niigata prefecture and analyzed the effect of the SNP genotypes on the carcass traits other than the BMS. No significant differences in the BMS level were detected among the genotypes of the c.-312A > G SNP in the Niigata Japanese Black beef cattle population. The SNP genotype had no significant effects on the carcass weight, rib eye area and rib thickness of the cattle population. These findings suggested that the association of the c.-312A > G SNP with the BMS level in the Japanese Black beef cattle population was not replicated in the Niigata population, and revealed no effects of the SNP genotype on the beef productivity in the Niigata population. Thus, we concluded that the c.-312A > G SNP is not useful for effective marker-assisted selection to increase meat quality and, additionally, meat productivity in Japanese Black beef cattle of Niigata prefecture.

日田市バイオマス資源化事業における温室効果ガス排出量と経済性に関する評価分析

In this paper we evaluate the facility for recycling biomass in Hita City Oita Prefecture from economical and environmental viewpoints. We calculate the volume of greenhouse gas emission in operating by using Life Cycle Assessment in operating this facility. This paper also clears the relationship between the volume of greenhouse gas emission and running cost and indicates the possibility to improve financial condition. The system to recycle biomass in Hita City discharges less greenhouse gas than incineration plant and sewage works. It is shown that the effort of Hita City has environmental and economical significant.