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Effect of loading rate on mechanical behavior of SRC shearwalls
Fumiya Esaki,Masayuki Ono 국제구조공학회 2001 Steel and Composite Structures, An International J Vol.1 No.2
In order to investigate the effect of the loading rate on the mechanical behavior of SRC shearwalls, we conducted the lateral loading tests on the 1/3 scale model shearwalls whose edge columns were reinforced by H-shaped steel. The specimens were subjected to the reversed cyclic lateral load under a variable axial load. The two types of loading rate, 0.01 cm/sec for the static loading and 1 cm/sec for the dynamic loading were adopted. The failure mode in all specimens was the sliding shear of the in-filled wall panel. The edge columns did not fail in shear. The initial lateral stiffness and lateral load carrying capacity of the shearwalls subjected to the dynamic loading were about 10% larger than those subjected to the static loading. The effects of the arrangement of the H-shaped steel on the lateral load carrying capacity and the lateral load-displacement hysteresis response were not significant.
LATERAL CANTHOTOMY-CONJUNCTIVAL APPROACH TO THE LATERAL AND INFERIOR ORBIT
Kameyama, Tadamitsu,Esaki, Seiji,Byun,Sook,Lee,Tae-Young,Kim,hyoun-Chul,Yoon,Ok-Byung 大韓顎顔面成形再建外科學會 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.1
협골체 골절시 접근방법은 안와하연에 대해 섬모하절개, 하안검절개, 안와하연절개 및 결막절개등이 사용되고 안와측벽, frontozygomatic suture에 대해서는 lateral brow incision, 상안검절개등이 사용되며 관상절개술은 frontozygomatic suture와 협고궁에 접근할 수 있다. 관상절개술을 제외한 접근방법은 한가지 절개술로 단지 한부위의 정복과 고정술이 가능하므로 결국 협골체 골절시 2점이상 고정을 할 경우 2가지 이상의 절개가 필요하게 된다. 이에 저자들은 관상절개술의 적응증이 아닌 협골체 골절에 lateral-canthotomy -conjunctival incision을 사용하여 안와하연 및 측벽의 골절부에 대한 정복술과 고정술을 시행하여 양호한 결과를 관찰하여 이에 보고하는 바이다. Various extraoral and intraoral approaches to reduction and fixation of zygomatic complex fractures were used. The method for exposure of inferior orbital area include the subciliary, inferior eyelid, infraorbital rim and conjunctions incisions. For exposure of frontozygomatic suture, lateral brow, coronal and b¹ephaloplasty incisions were used. It is necessary that the usual approaches to the inferior and lateral orbit have two incisions. However, lateral canthotomy-conjunctival approach presented on this paper provide optimal exposure to lateral and inferior orbit.
Body composition and hemodynamic changes in patients with special needs
Tsukamoto, Masanori,Hitosugi, Takashi,Esaki, Kanako,Yokoyama, Takeshi The Korean Dental Society of Anesthsiology 2016 Journal of Dental Anesthesia and Pain Medicine Vol.16 No.3
Background: Some patients with special needs exhibit intellectual disability, including deficits in cognitive skills and decreased quality of life. The purpose of this study was to retrospectively compare changes in body composition and hemodynamics during general anesthesia in patients with and without special needs. Methods: The backgrounds of patients who underwent oral maxillofacial surgery under general anesthesia were recorded from medical records. Intracellular water (ICW), extracellular water (ECW), stroke volume variation (SVV), and heart rate (HR) were recorded for 3 h after the start of anesthesia. Categorical data were compared using an unpaired t-test, and a P-value of less than 0.05 was regarded as significant. Numerical data were compared using the Bonferroni correction, and a P-value of less than 0.0125 was regarded as significant. Results: A total of 21 patients were included in the study: 10 patients without special needs (non-S-group) and 11 patients with special needs (S-group). There were no significant differences in patients' backgrounds, except with regard to height (P = 0.03). In both groups, ICW and ECW were maintained, although they were lower in the S-group compared to the non-S-group. SVV was maintained in both groups, although it was higher in the S-group than the non-S-group. HR was significantly lower in the S-group 1 h after induction of anesthesia (P < 0.003). Conclusions: Changes in hemodynamics due to body fluid imbalance should be monitored during general anesthesia, especially for patients with special needs.
Improved oxide-ion conductivity of NdBaInO<sub>4</sub> by Sr doping
Fujii, Kotaro,Shiraiwa, Masahiro,Esaki, Yuichi,Yashima, Masatomo,Kim, Su Jae,Lee, Seongsu The Royal Society of Chemistry 2015 Journal of Materials Chemistry A Vol.3 No.22
<▼1><P>The oxide-ion conductivity of NdBaInO4 has been increased by Sr doping.</P></▼1><▼2><P>The oxide-ion conductivity of NdBaInO4 has been increased by Sr doping. Nd0.9Sr0.1BaInO3.95 showed the highest electrical conductivity among Nd1−xSrxBaInO4−x/2 (<I>x</I> = 0.0, 0.1, 0.2, and 0.3). The oxide-ion conductivity <I>σ</I>ion of Nd0.9Sr0.1BaInO3.95 (<I>σ</I>ion = 7.7 × 10<SUP>−4</SUP> S cm<SUP>−1</SUP>) is about 20 times higher than that of NdBaInO4 (<I>σ</I>ion = 3.6 × 10<SUP>−5</SUP> S cm<SUP>−1</SUP>) at 858 °C, and the activation energy of oxide-ion conduction is a little lower for Nd0.9Sr0.1BaInO3.95 (0.795(10) eV) than that for NdBaInO4 (0.91(4) eV). The structure analysis based on neutron powder diffraction data revealed that the Sr exists at the Nd site and oxygen vacancies are observed in Nd0.9Sr0.1BaInO3.95. This result indicates that the increase of the oxide-ion conductivity is mainly due to the increase of the carrier concentration. The bond valence-based energy landscape indicated two-dimensional oxide-ion diffusion in the (Nd,Sr)2O3 unit on the <I>bc</I>-plane and a decrease of the energy barrier by the substitution of Nd with Sr cations.</P></▼2>