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Daibo Kojima,Ari Leppäniemi,Suguru Hasegawa 대한외상중환자외과학회 2019 Journal of Acute Care Surgery Vol.9 No.2
Acute appendicitis (AA) is one of the most common causes of acute abdominal pain, which can progress to perforation of the appendix and peritonitis. Recently, AA has been classified into uncomplicated (nonperforated, no phlegmon) or complicated (abscess, perforation, phlegmon) appendicitis, for an appropriate initial treatment. With respect to surgical treatment of AA, laparoscopic surgery has been widely accepted worldwide as a safe and feasible first-line treatment. Over the last decade, non-operative treatment has been proposed as an alternative to surgery in uncomplicated AA, and has also played an important role in the management of complicated AA. AA is also the most common cause for abdominal surgery during pregnancy, though an accurate diagnosis of AA during pregnancy is challenging. In this review, the topics being discussed include: 1) Non-operative management for uncomplicated AA, 2) Management for AA in pregnancy, 3) Management for complicated appendicitis (especially immediate laparoscopic surgery for appendiceal abscess), 4) Appendiceal neoplasms related to complicated AA.
Xiangyang Xu,Jiang Daibo,Hateo Gou 국제구조공학회 2022 Steel and Composite Structures, An International J Vol.45 No.6
Geopolymer concrete ( ) has emerged as a feasible choice for construction materials as a result of the environmental issues associated with the production of cement. The findings of this study contribute to the development of machine learning methods for estimating the properties of eco-friendly concrete to help reduce 2 emissions in the construction industry. The compressive strength ( ) of is predicted using artificial intelligence approaches in the present study when ground granulated blast-furnace slag ( ) is substituted with natural zeolite ( ), silica fume ( ), and varying concentrations. For this purpose, two machine learning methods multi-layer perceptron ( ) and radial basis function ( ) were considered and hybridized with arithmetic optimization algorithm ( ), and grey wolf optimization algorithm ( ). According to the results, all methods performed very well in predicting the of . The proposed − might be identified as the outperformed framework, although other methodologies ( − , − , and − ) were also reliable in the of forecasting process.
Enhanced Strength–Corrosion Synergy of 6061Al Casting Alloy Through Erbium Addition
Guilan Xie,Puli Cao,Daibo Zhu,Jingxin Li,Chaohua Jiang,Juan Li,Yang Liu,Jirong Liu,Yulong Zhu 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.12
The purpose of this work is to investigate the effect of Er on mechanical properties and corrosion behavior of 6061 alloys. Thetensile strength and corrosion resistance of the 6061 alloys first enhanced and then declined synergistically with the increaseof Er content. Microstructure analysis revealed that the morphology, composition, and potential of secondary phases changedsignificantly as Er content changed. When the Er content is 0.6 wt%, the needle-like β-AlFeSi phases transformed into thegranular AlFeSiEr phases, which led to an increase in the tensile strength of the 6061 alloys. At the same time, compared withthe acicular β-AlFeSi phases, the granular AlFeSiEr phases own a lower potential difference with α-Al, which weakened thecorrosion of the micro-galvanic couples. However, as the Er content is higher than 0.6 wt%, the granular AlFeSiEr phaseschanged to block-shaped, which can adversely affect the tensile strength and corrosion resistance of the 6061 alloys. EISresults show that, compared with the acicular β-AlFeSi phases, the 6061 alloys with granular AlFeSiEr phases form moreuniform oxide films and exhibit better corrosion resistance. This study indicates that through appropriate Er addition, thesynergistic enhancement of tensile strength and corrosion resistance of the 6061 alloys can be obtained, which is of greatsignificance for the strengthening and long-term service of aluminum alloys.
Song, Xiaozhen,Luo, Junrong,Fu, Daibo,Zhao, Xianghui,Bunlue, Kornmatitsuk,Xu, Zhensong,Qu, Mingren Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.10
The present aim was to investigate the effects of traditional Chinese medicine prescriptions (TCM) on body temperature, blood physiological parameters, nutrient apparent digestibility and growth performance of beef cattle under heat stress conditions. Twenty-seven beef cattle were randomly divided into three groups as following; i) high temperature control (HTC), ii) traditional Chinese medicine prescriptions I+high temperature (TCM I) and iii) traditional Chinese medicine prescriptions II+high temperature (TCM II) (n = 9 per group). The results showed that the mean body temperature declined in TCM II treatment (p<0.05). Serum $T_3$ and $T_4$ levels with TCM I and TCM II treatments elevated (p<0.05), and serum cortisol levels of TCM I treatments decreased (p<0.05), compared with the HTC group. Total protein, albumin, globulin in TCM II treatments elevated and blood urea nitrogen levels of both TCM treatments increased, but glucose levels of both TCM treatments decreased, compared with the HTC group (p<0.05). The apparent digestibility of organic matter and crude protein with TCM I treatment increased, and the apparent digestibility of acid detergent fiber elevated in both TCM treatments (p<0.05). Average daily feed intake was not different among three groups, however average daily gain increased and the feed:gain ratio decreased with both TCM treatments, compared with the HTC group (p<0.05). The present results suggest that dietary supplementation with TCM I or TCM II improves growth performance of heat stressed beef cattle by relieving heat stress responses and increasing nutrient apparent digestibility.
Peng Wei,Wan-Fen Pu,Lin Sun,Daibo Li,Xudong Ji 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.60 No.-
APG can be employed as a promising foaming agent due to its largely independent of temperature and salinity. Aiming at the APGs foam, we conducted the experiments about adsorption behaviors, surface viscoelasticity, bulk foam properties and core flooding under conditions of high-temperature and -salinity. Our results demonstrated that APG (n = 10) foam presents a good foam performance and foam properties are highly depended on the surface viscoelasticity and are not completely determined by the adsorbing capacity at the interface of gas–water. In the porous media, an appropriate foam quality of APG foam is contributed to increase the foam strength and gas trapping.
Role of water-soluble polymer on foam-injection process for enhancing oil recovery
Peng Wei,Wan-Fen Pu,Lin Sun,Yong Pu,Daibo Li,Ying Chen 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.65 No.-
Role of polymer on foam transportation in porous media is still not entirely illustrated. In this study, we performed the foam injection process in cores and the parallel-layered micromodel, respectively. Combined with a series of static investigations, we found that adding polymer to foam could not only effectively generate a viscous force, but also create a protective enclosure around the bubble (i.e., viscoelastic film). This synergistic effect was supposed to increase the foam apparent viscosity, promote the foam strength in the low-quality regime, create the shear-thickening behavior, and restraint the defoaming effect of crude oil. The microflow experiments indicated that polymer-enhanced foam was capable of sharply increasing the sweep efficiency and EOR. Meanwhile, the presence of viscoelastic liquid films contributed to the microflow behaviors.