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Predicting the Effective Depth of Soil Stabilization for Marine Clay Treated by Biomass Silica
Lim Jing Jin,Nor Zurairahetty Mohd Yunus,Muhammad Azril Hezmi,Ahmad Safuan Abdul Rashid,Amination Marto,Roohollah Kalatehjari,Faizal Pakir,Nordiana Mashros,AbideenAdekunle Ganiyu 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.11
Reclamation and development towards the oceanic area had become a trend of modern days, where the marine soil need to be treated prior construction. The increase in unconfined compressive strength of marine clay treated by Biomass Silica, ‘SH-85’ has been demonstrated by several investigations. This paper studies the stress-strain behavior of marine clay treated with 12% of SH-85 with different curing periods and confining pressures. The results show that the strength parameters of the stabilized soil are greatly improved during the early stage of the curing period under higher confining pressures. In addition, the XRD analysis and microstructure study confirm the appearance of a new reflection peak at 29° in the treated soils indicating the formation of Calcium Silicate Hydrate (CSH). The curing period of 7 days at a confining pressure of 400 kPa was found to be an optimum combination for in situ stabilization. The effective stabilization depth predicted at each location can be defined as the depth ensuing the mentioned confining pressure. The approach of this research can be applied in construction activities associated with marine clay to help engineers in risk assessment, feasibility study and planning of the developments.
( Yu Lim Son ),( Hyoun Young Kim ),( Saravanakumar Thiyagarajan ),( Jing Jing Xu ),( Seung Moon Park ) 한국균학회 2012 Mycobiology Vol.40 No.4
CDNA of the glx1 gene encoding glyoxal oxidase (GLX) from Phanerochaete chrysosporium was isolated and expressed in Pichia pastoris. The recombinant GLX (rGLX) produces H2O2 over 7.0 nmol/min/mL using methyl glyoxal as a substrate. Use of rGLX as a generator of H2O2 improved the coupled reaction with recombinant manganese peroxidase resulting in decolorization of malachite green up to 150uM within 90 min.
Bio-Conjugated Polycaprolactone Membranes: A Novel Wound Dressing
Cai, Elijah Zhengyang,Teo, Erin Yiling,Jing, Lim,Koh, Yun Pei,Qian, Tan Si,Wen, Feng,Lee, James Wai Kit,Hing, Eileen Chor Hoong,Yap, Yan Lin,Lee, Hanjing,Lee, Chuen Neng,Teoh, Swee-Hin,Lim, Jane,Lim, Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.6
Background The combination of polycaprolactone and hyaluronic acid creates an ideal environment for wound healing. Hyaluronic acid maintains a moist wound environment and accelerates the in-growth of granulation tissue. Polycaprolactone has excellent mechanical strength, limits inflammation and is biocompatible. This study evaluates the safety and efficacy of bio-conjugated polycaprolactone membranes (BPM) as a wound dressing. Methods 16 New Zealand white rabbits were sedated and local anaesthesia was administered. Two $3.0{\times}3.0cm$ full-thickness wounds were created on the dorsum of each rabbit, between the lowest rib and the pelvic bone. The wounds were dressed with either BPM (n=12) or Mepitel (n=12) (control), a polyamide-silicon wound dressing. These were evaluated macroscopically on the 7th, 14th, 21st, and 28th postoperative days for granulation, re-epithelialization, infection, and wound size, and histologically for epidermal and dermal regeneration. Results Both groups showed a comparable extent of granulation and re-epithelialization. No signs of infection were observed. There was no significant difference (P>0.05) in wound size between the two groups. BPM (n=6): $8.33cm^2$, $4.90cm^2$, $3.12cm^2$, $1.84cm^2$; Mepitel (n=6): $10.29cm^2$, $5.53cm^2$, $3.63cm^2$, $2.02cm^2$; at the 7th, 14th, 21st, and 28th postoperative days. The extents of epidermal and dermal regeneration were comparable between the two groups. Conclusions BPM is comparable to Mepitel as a safe and efficacious wound dressing.
Bio-Conjugated Polycaprolactone Membranes: A Novel Wound Dressing
Elijah Zhengyang Cai,Erin Yiling Teo,Lim Jing,Yun Pei Koh,Tan Si Qian,Feng Wen,James Wai Kit Lee,Eileen Chor Hoong Hing,Yan Lin Yap,Hanjing Lee,Chuen Neng Lee,Swee-Hin Teoh,Jane LIM,Thiam Chye LIM 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.6
Background: The combination of polycaprolactone and hyaluronic acid creates an idealenvironment for wound healing. Hyaluronic acid maintains a moist wound environment andaccelerates the in-growth of granulation tissue. Polycaprolactone has excellent mechanicalstrength, limits inflammation and is biocompatible. This study evaluates the safety and efficacyof bio-conjugated polycaprolactone membranes (BPM) as a wound dressing. Methods: 16 New Zealand white rabbits were sedated and local anaesthesia was administered. Two 3.0×3.0 cm full-thickness wounds were created on the dorsum of each rabbit, betweenthe lowest rib and the pelvic bone. The wounds were dressed with either BPM (n=12) orMepitel (n=12) (control), a polyamide-silicon wound dressing. These were evaluatedmacroscopically on the 7th, 14th, 21st, and 28th postoperative days for granulation, reepithelialization,infection, and wound size, and histologically for epidermal and dermalregeneration. Results: Both groups showed a comparable extent of granulation and re-epithelialization. Nosigns of infection were observed. There was no significant difference (P>0.05) in wound sizebetween the two groups. BPM (n=6): 8.33 cm2, 4.90 cm2, 3.12 cm2, 1.84 cm2; Mepitel (n=6):10.29 cm2, 5.53 cm2, 3.63 cm2, 2.02 cm2; at the 7th, 14th, 21st, and 28th postoperative days. The extents of epidermal and dermal regeneration were comparable between the two groups. Conclusions: BPM is comparable to Mepitel as a safe and efficacious wound dressing.
Jing Wei,Ruizhi Shu,Datong Qin,Teik C. Lim,Aiqiang Zhang,Fanming Meng 한국정밀공학회 2016 International Journal of Precision Engineering and Vol.17 No.9
Multi-source driving transmission systems, in which the gear assembly is driven by multiple induction motors, are extensively used in new energy, aerospace, marine engineering, and in other fields. The multi-source driving system faces an even-load distribution problem, i.e., torque or speed synchronization issues. In this study, the synchronization characteristics of a multi-source driving transmission system under an impact load at different load change rates are studied. An accurate electromechanical coupling dynamic model of the system considering the flexible shafts, support bearing and meshing gear pair is established by applying virtual equivalent shaft elements. By considering the time-varying meshing and the coupling effects of the dynamic electric motor and the speed, torque and stator current synchronization characteristics are investigated using this model. Computational results show that the influence of the load change rate on the speed synchronization characteristics of the system is minor, but has a significant influence on the torque and stator current synchronization characteristics. The stator current root mean square value (RMS) can be chosen as a feedback signal to monitor the synchronization characteristics of the system. The proposed research provides the theoretical basis for the formulation of the synchronization control strategy for multi-source driving transmission systems.
Jing Hui Feng,Seung Hwan Hwang,Youn Gil Kwak,Min-Jung Kim,Jeong Hun Jo,Soon Sung Lim,Hong Won Suh 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Agrimonia pilosa Ledeb, as a traditional medicine, has been reported to be widely used on anti-inflammatory activity in many studies, as well as Salvia miltiorrhiza Bunge. Previously, we have reported that the mixture extract (ME) from Agrimonia pilosa Ledeb (AP) and Salvia miltiorrhiza Bunge (SM) could produce an antinociceptive effect in the gout arthritis model. Also, the Perna canaliculus extracts (PCE) has well-known anti-inflammatory and anti-arthritis effects. Then, in the present study, we aimed to investigate the potential anti-inflammatory and antinociceptive effects of the ME by using in vitro and in vivo models. At the same time, we project to compare with the PCE, which as a positive control. Results showed that both the once or continuously one-week treatment of the ME or the PCE reduced the pain threshold in a dose-dependent manner in the mono-iodoacetate (MIA)-induced arthritis model. However, we found that at the same dose of the ME and PCE, ME showed more and earlier effectiveness than the PCE. Both the ME and PCE also suppressed the plasma TNF-α, IL-6, and CRP expression in the MIA-induced arthritis model. Additionally, the release of nitric oxide (NO) and IL-6 were inhibited by the ME and the PCE in a dose-dependent manner in lipopolysaccharide (LPS)-stimulated RAW 264.7 cells. Moreover, TNF-α and MAPKs proteins expression were down-regulated by the ME and the PCE in LPS-stimulated RAW 264.7 cells. Furthermore, in the other in vivo assay, the change of ear weight in croton oil-induced ear edema model in mice was significantly reduced by treatment with the ME or the PCE at equally efficacy. Therefore, we suggest that the ME from AP and SM possesses anti-inflammatory and antinociceptive effects which indicate AP and SM could be a potential candidate for arthritis or ear edema treatment.