Suspended Culture of Asari Clam, Ruditapes philippinarum, Utilizing Natural Seeds

Junya Higano,Nariaki Inoue,Natsuki Hasegawa,YukaIshihi,Yoshimi Fujioka,Masahiro Kuno,Daisuke Asao,Megumu Yamaguchi,Yoshitaka Imai,Setsuo Kobayashi 한국수산과학회 양식분과 2014 한국수산과학회 양식분과 학술대회 Vol.2014 No.10

SINGLE-PHASE HEAT TRANSFER AND PRESSURE DROP INSIDE INTERNALLY HELICAL-GROOVED HORIZONTAL SMALL-DIAMETER TUBES

NORIHIRO INOUE,JUNYA ICHINOSE 대한설비공학회 2012 International Journal Of Air-Conditioning and Refr Vol.20 No.4

An experimental study on pressure drop and heat transfer in single-phase was carried out using 10 types of internally helical-grooved and smooth small-diameter tubes with an outside diameter of 4 mm. The results are listed below: (1) In the turbulent flow region, fin height had the greatest effect, helix angle had only a minor effect, and the number of grooves had almost no effect upon the pressure drop versus the mass flow rate of the 4-mm grooved small-diameter tubes. In the laminar flow region, except for fin height, the shapes of the internal grooves had scarcely any effect upon pressure drop. (2) In the turbulent flow region, the heat transfer coefficients of the 4-mm grooved small-diameter tubes were greatly affected by fin height. The heat transfer coefficients became the maximum when a helix angle was near 15℃, and there is a different tendency in the experiments of the pressure drop. On the other hand, there is almost no effect of the number of grooves. In the laminar flow region, there were no large differences in the heat transfer coefficients between the internally helical-grooved tubes and smooth small-diameter tube. (3) New empirical correlations for the friction factor and heat transfer coefficient in the laminar and turbulent flow regions were developed based on the experimental values. (4) The performance assessment in consideration of both heat transfer and pressure drop was indicated by using Colburn's analogy.

Improvement in Neurogenic Bowel and Bladder Dysfunction Following Posterior Decompression Surgery for Cauda Equina Syndrome: A Prospective Cohort Study

Ryo Kanematsu,Junya Hanakita,Toshiyuki Takahashi,Manabu Minami,Tomoo Inoue,Kazuhiro Miyasaka,Hiroya Shimauchi-Ohtaki,Manabu Ueno,Fumiaki Honda 대한척추신경외과학회 2021 Neurospine Vol.18 No.4

Objective: The mechanisms of neurogenic bowel dysfunction (NBD) and neurogenic bladder (NB), which are major consequences of spinal cord injury and occasionally degenerative lumbar disease. The following in patients with cauda equina syndrome who underwent posterior decompression surgery was investigated: (1) the preoperative prevalence of NBD and NB, measured using the Constipation Scoring System (CSS) and International Prostate Symptoms Score (IPSS); (2) the degree and timing of postoperative improvement of NBD and NB. Methods: We administered the CSS and IPSS in 93 patients before surgery and at 1, 3, 6, and 12 months postoperatively. We prospectively examined patient characteristics, Japanese Orthopaedic Association (JOA) score, and postoperative improvements in each score. Results: The prevalence of symptomatic defecation and urinary symptoms at admission were 37 patients (38.1%) and 31 patients (33.3%), respectively. Among the symptomatic patients with defecation problems, 12 patients had improved at 1 month, 13 at 3 months, 14 at 6 months, and 13 at 12 months postoperatively. Among the symptomatic patients with urinary problems, 5 patients improved at 1 month, 11 at 3 months, 6 at 6 months, and 10 at 1 year postoperatively. Comparing patients with improved versus unimproved in CSS, the degree of JOA score improvement was a significant prognosis factor (p<0.05; odds ratio, 1.05). Conclusion: The prevalence of symptomatic defecation and urinary symptoms in patients with cauda equina syndrome was 38.1% and 33.3%, respectively. Decompression surgery improved symptoms in 30%–50%. These effects were first observed 1 month after the operation and persisted up to 1 year.

Yet Another Possible Mechanism for Anomalous Transport: Theory, Numerical Method, and Experiments

Pang-jo Chun,Junya Inoue 대한토목학회 2012 KSCE JOURNAL OF CIVIL ENGINEERING Vol.16 No.1

Recently there has been considerable interest in anomalous transport in porous media. An Advection-Dispersion Equation (ADE)is widely used as a governing equation of contaminant migration, however there have been a number of reports that ADE does not express observational and experimental data. This clear discrepancy is attributed to insufficient knowledge about the mechanism of anomalous transport. The primary objective of this study is to present the possible mechanism of anomalous transport analytically by investigating the effect of viscosity on the dispersion process from the equation of Continuous Time Random Walk (CTRW). In addition, a method, which predicts contaminant migration not only in homogeneous material but also in heterogeneous material, has developed by combining the clarified mechanism and streamline method. Streamline is discretized to infinitesimal passes and CTRW which describes contaminant transportation is numerically integrated in the passes. Results obtained from the developed method have agreed well with experimental results of this research.

Numerical studies of the effect of residual imperfection on the mechanical behavior of heat-corrected steel plates, and analysis of a further repair method

Pang-jo Chun,Junya Inoue 국제구조공학회 2009 Steel and Composite Structures, An International J Vol.9 No.3

Heating correction, through heating and flattening a structure with a pressing machine, is the insitu method used to repair buckled steel structures. The primary purpose of this investigation is to develop an FEM model which can predict the mechanical response of heat-corrected plates accurately. Our model clarifies several unsolved problems. In previous research, the location of the imperfection was limited to the center of the specimen although the mechanical behavior is strongly affected by the location of the imperfection. Our research clarifies the relationship between the location of the imperfection and the mechanical behavior. In addition, we propose further reinforcement methods and validate their effectiveness. Our research concludes that the strength of a buckled specimen can be recovered by heating correction and the use of an adequate stiffener.

Therapeutic Prediction of Osteoporotic Vertebral Compression Fracture Using the AO Spine-DGOU Osteoporotic Fracture Classification and Classification-Based Score: A Single-Center Retrospective Observational Study

Koki Mitani,Toshiyuki Takahashi,Shinya Tokunaga,Tomoo Inoue,Ryo Kanematsu,Manabu Minami,Junya Hanakita 대한척추신경외과학회 2023 Neurospine Vol.20 No.4

Objective: The treatment of osteoporotic vertebral compression fractures (OVCFs) is based on their severity; however, an efficient prediction tool is lacking. We aimed to evaluate the validity of the osteoporotic fracture classification (OF classification) and scoring system (OF score) in predicting the treatment strategy for patients with OVCF, defined according to the Japanese criteria. Methods: We retrospectively investigated 487 consecutive patients diagnosed with vertebral body fractures between January 2018 and December 2022. Only patients with their fresh vertebral fracture episode during the study period were included. Patients were classified into 3 groups: conservative treatment, balloon kyphoplasty (BKP), and open surgery. OF classification and OF scores were assessed for each patient. Results: A total of 237 patients with OVCF were included. There were 127, 81, and 29 patients in the conservative, BKP, and open surgery groups, respectively. The OF score was significantly higher in the BKP and open surgery groups than in the conservative group (p < 0.001). Multivariate logistic regression analysis showed that antiosteoporotic drug use, OF classification, progressive deformity, neurological symptoms and mobilization were independent risk factors for operative treatment (all p < 0.001). Receiver operating characteristic analysis showed that the cutoff OF score for operative indication was 5.5, with a sensitivity of 91.9%, specificity of 56.5%, and area under the curve of 0.820 (95% confidence interval, 0.769–0.871). Conclusion: The OF score identified patients who required operative treatment with a high degree of accuracy. This is especially important for ruling out patients who definitely require operative treatment.

The Impact of Adjuvant Radiotherapy on Clinical Performance Status in Patients With Grade II Spinal Cord Astrocytoma – A Nationwide Analysis by the Neurospinal Society of Japan

Ryo Kanematsu,Masaki Mizuno,Tomoo Inoue,Toshiyuki Takahashi,Toshiki Endo,Seiji Shigekawa,Jun Muto,Daisuke Umebayashi,Takafumi Mitsuhara,Kazutoshi Hida,Junya Hanakita 대한척추신경외과학회 2023 Neurospine Vol.20 No.3

Objective: The impact of adjuvant radiotherapy on overall survival (OS) and progressionfree survival (PFS) of patients with grade II spinal cord astrocytomas remains controversial. Additionally, the relationship between progression and clinical deterioration after radiotherapy has not been well investigated. Methods: This study included 53 patients with grade II intramedullary spinal cord astrocytomas treated by either subtotal, partial resection or open biopsy. Their clinical performance status was assessed immediately before operation and 1, 6, 12, 24, and 60 months after surgery by Karnofsky Performance Scale (KPS). Patients with and without adjuvant radiotherapy were compared. Results: The groups with and without radiation comprised 23 and 30 patients with a mean age of 50.3 ± 22.6 years (range, 2–88 years). The mean overall disease progression rate was 47.1% during a mean follow-up period of 48.4 ± 39.8 months (range, 2.5–144.5 months). In the radiation group, 11 patients (47.8%) presented with progressive disease, whereas 14 patients (46.7%) presented with progressive disease in the group without radiation. There were no significant differences in OS or PFS among patients with or without adjuvant radiotherapy. KPS in both groups, especially radiation group, gradually decreased after operation and deteriorated before the confirmation of disease progression. Conclusion: Adjuvant radiotherapy did not show effectiveness regarding PFS or OS in patients with grade II spinal cord astrocytoma according to classical classification based on pathohistological findings.

현장 적용성 향상 및 지반재료 물성의 불확실성 극복을 위한 수치해석법 개발 기초연구

김형목(Hyung-Mok Kim),신중호(Joong-Ho Synn),井上純哉(Junya Inoue) 한국암반공학회 2007 터널과지하공간 Vol.17 No.4

일반적으로 지반재료의 물성은 불균질할 뿐만 아니라 제한된 수량의 시추공을 이용한 지반재료의 물성조사는 그 불균질성을 파악하기에 충분하지 못한 경우가 대부분이다. 또한, 지반 굴착 등의 토목공사에 있어서 굴착 결과로 얻어지는 현장조건은 사전 지반조사와 상이한 경우가 많으며 이를 반영한 해석조건의 수정과정은 유한요소해석으로 대표되는 기존해석의 경우 상당한 비용과 시간을 요구한다. 이러한 관점에서 본 연구에서는 무요소해석법과 연속확률변수의 급수전개법의 하나인 Karhunen-Loeve 전개법을 결합함으로써, 지반재료물성의 불균질성에 기인한 불확실성의 정량적 평가가 가능하고 현장조건의 신속한 반영이 상대적으로 수월한 해석툴의 개발을 위한 기초연구를 수행하였다. 이를 위해 개발된 해석법을 1차원 문제에 적용하여 타당성을 검증하고 서로 다른 해석결과의 특징을 비교분석 하였다. Material properties of geomaterials are usually heterogeneous. And the limitted number of investigation for the subsurface material properties in terms of boreholes are not sufficient enough for identifying the heterogeneity. In most civil engineering work, pre-investigation results can be different from those by in-situ inspection during the construction work. With these points of view, a new analysis concept aiming to evaluate the uncertainty resulted from the heterogeneity of the geomaterial properties as well as to enhance a construction workability and design quality by a prompt feedback of in-situ conditions was proposed. It was accomplished by linking the Element Free analysis and pre-developed stochastic methods represented by Karhunen-Loeve expansion. Simple 1D problem was solved by the developed method, and its validity as well as the characteristic results by different stochastic methods were clarified.