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| 1 | Influence of particle size and salinity on adsorption of basic dyes by agricultural waste: dried Seagrape (Caulerpa lentillifera)显示文摘Green macroalga Caulerpa lentillifera was found to have reasonable adsorption capacity for basic dyes, Astrazon Blue FGRL (AB), Astrazon Red GTLN (AR), and Astrazon Golden Yellow GL-E (AY). The initial dye concentration was in the range of 100–1,800 mg/L. The dried algal sorbent was ground and sieved into 3 sizes: S (0.1–0.84 mm), M (0.84–2.0 mm), and L sizes (larger than 2.0 mm). For all conditions examined in this work (at 25°C in batch systems), the adsorption reached equilibrium within the first hour. The kinetic data corresponded well with the pseudo second order kinetic model where the rate constant, k2, decreased as the sorbent size increased for all dyes. The adsorption isotherms followed both Langmuir and Freundlich models. Among three sorbent sizes, S size gave the highest adsorption capacity followed by M and L sizes. A reduction of sorbent size increased the specific surface area for mass transfer, and also increased the total pore volume, thus providing more active sites for adsorption. The adsorption of AB was adversely influenced by the protonation of algal surface at low pH. On the other hand, the adsorption of AR and AY could be due to weak electrostatic interaction, which was not significantly affected by pH. Increasing salinity of the system caused a decrease in adsorption capacity possibly due to the competition between Na+ and the dye cations for the binding sites on algal surface. Moreover, an increase in salinity generated a compressed electrical double layer on the algal surface which exerted repulsive force, retarding the adsorption of positive charged molecules such as the basic dyes. | Pimol Punjongharn Khanidtha Meevasana Prasert Pavasant | 2008 | Journal of Environmental Sciences2008，20，6： | 15 |
| 2 | Batch studies of adsorption of copper and lead on activated carbon from Eucalyptus camaldulensis Dehn. bark显示文摘Powdered activated carbon (PAC) prepared from Eucalyptus camaldulensis Dehn. bark was tested for its adsorption capacity for Cu(Ⅱ) and Pb(Ⅱ). The experiment was conducted to investigate the effects of pH, contact time, initial metal concentration, and temperature. The best adsorption of both Cu(Ⅱ) and Pb(Ⅱ) occurred at pH 5, where the adsorption reached equilibrium within 45 min for the whole range of initial heavy metal concentrations (0.1-10 mmol/L). The adsorption kinetics was found to follow the pseudo-second order model where equilibrium adsorption capacities and adsorption rate constants increased with initial heavy metal concentrations. The adsorption isotherm followed Langmuir better than Freundlich models within the temperature range (25-60°C). The maximum adsorption capacities (qm) occurred at 60°C, where qm for Cu(Ⅱ) and Pb(Ⅱ) were 0.85 and 0.89 mmol/g, respectively. The enthalpies of Cu(Ⅱ) and Pb(Ⅱ) adsorption were 43.26 and 58.77 kJ/mol, respectively. The positive enthalpy of adsorption indicated an endothermic nature of the adsorption. | Phussadee Patnukao Apipreeya Kongsuwan Prasert Pavasant | 2008 | Journal of Environmental Sciences2008，20，9： | 6 |
| 3 | Interleukin-1βinduces human cementoblasts to support osteoclastogenesis显示文摘Injury of the periodontium followed by inflammatory response often leads to root resorption. Resorption is accomplished by osteoclasts and their generation may depend on an interaction with the cells in direct contact with the root, the cementoblasts.Our study aimed to investigate the role of human cementoblasts in the formation of osteoclasts and the effect of interleukin(IL)-1β hereupon. Extracted teeth from healthy volunteers were subjected to sequential digestion by type I collagenase and trypsin.The effect of enzymatic digestion on the presence of cells on the root surface was analyzed by histology. Gene expression of primary human cementoblasts(p HCB) was compared with a human cementoblast cell line(HCEM). The p HCBs were analyzed for their expression of IL-1 receptors as well as of receptor activator of nuclear factor kappa-B ligand(RANKL) and osteoprotegerin(OPG). In a co-culture system consisting of osteoclast precursors(blood monocytes) and p HCBs, the formation of osteoclasts and their resorptive activity was assessed by osteo-assay and ivory slices. The cells obtained after a 120 min enzyme digestion expressed the highest level of bone sialoprotein, similar to that of HCEM. This fraction of isolated cells also shared a similar expression pattern of IL-1 receptors(IL1-R1 and IL1-R2). Treatment with IL-1β potently upregulated RANKL expression but not of OPG. p HCBs were shown to induce the formation of functional osteoclasts. This capacity was significantly stimulated by pretreating the p HCBs with IL-1β prior to their co-culture with human blood monocytes. Our study demonstrated that cementoblasts have the capacity to induce osteoclastogenesis, a capacity strongly promoted by IL-1β. These results may explain why osteoclasts can be formed next to the root of teeth. | nam c-n huynh vincent everts prasit pavasant ruchanee s ampornaramveth | 2017 | International Journal of Oral Science2017，9，4： | 5 |
| 4 | Visual detection of tropomyosin,a major shrimp allergenic protein using gold nanoparticles(AuNPs)-assisted colorimetric aptasensor显示文摘A gold nanoparticle-based label-free colorimetric assay was developed to detect the shrimp allergenic protein tropomyosin(TM),an important biomarker responsible for severe clinical reactivity to shellfish.In a gold nanoparticles(AuNPs)-tropomyosin-binding aptamer(TMBA)complex,the aptamer adsorbs onto the surface of AuNPs and dissociates in the presence of TM.In addition,AuNPs tend to aggregate in the presence of ionic salt,revealing a color change(i.e.,wine-red to purple/blue)with a shift in the maximum absorption peak from 520 nm.In the presence of specific binding TM,the aptamer folds into a tertiary structure where it more efficiently stabilizes AuNPs toward the salt-induced aggregation with a hypsochromic shift in the absorption spectra compared to the stabilized AuNPs by aptamer alone.Based on the aggregation and sensitive spectral transformation principle,the AuNPs-based colorimetric aptasensor was successfully applied to detect TM with a range of 10-200 nmol/L and a low detection limit of 40 nmol/L in water samples.The reliability,selectivity,and sensitivity of the aptasensor was then tested with food samples spiked with TM.The observed detection limit was as low as 70 nmol/L in shrimp,90 nmol/L in tofu,and 80 nmol/L in eggs,respectively.We anticipate the proposed AuNPs-based colorimetric aptasensor assay possesses a high potential for the easy and efficient visual colorimetric detection of TM. | Tushar Ramesh Pavase Hong Lin Maqsood Ahmed Soomro Hongwei Zheng Xiaxia Li Kexin Wang Zhenxing Li | 2021 | Marine Life Science & Technology2021，3，3： | 3 |
| 5 | 蛤蜊壳羟基磷灰石用于脱除蚝油中铅的初步研究显示文摘[目的]研究利用蛤蜊壳制备的羟基磷灰石用于吸附去除蚝油中重金属铅的可行性。[方法]利用含有铅离子的水溶液优化羟基磷灰石的吸附条件,进而探讨羟基磷灰石对蚝油中重金属铅的脱除效果,并分析脱除工艺对蚝油品质的影响。[结果]在羟基磷灰石用量为0.17 mg/m L,蚝油样品中铅离子含量为2.33 mg/m L以下时,羟基磷灰石对蚝油中重金属铅离子的吸附率达到98%以上,而且铅离子的浓度越高,吸附率越大。通过对吸附前后蚝油主要理化性质的对比发现,吸附作用对蚝油的主要品质指标没有显著影响,而且微量元素Ca、Zn的含量有所增加。[结论]用蛤蜊壳制备的羟基磷灰石能够有效吸附蚝油中的重金属铅,这不但为蚝油中重金属铅的控制提供了新的处理技术,而且还为蛤蜊壳的资源化及深度利用提供了新的思路。 | 金科 Tushar Ramesh Pavase 李振兴 徐凤娟 | 2015 | 中国渔业质量与标准2015，5，6： | 3 |
| 6 | Preparation and characterization of chitin whisker-reinforced silk fibroin nanocomposite sponges显示文摘 | Wongpanit P Sanchavanakit N Pavasant P | 2007 | European Polymer Journal2007，43，10： | 1 |
| 7 | Characterization of haloacetic acid precursors in sourcewater 显示文摘 | Kanokkantapong V Marhaba T F Pavasant P | 2006 | J Environ Manage2006，80，3： | 1 |
| 8 | Osteoprotegerin induces osteopontin via syndecan-1 and phosphoinositol 3-kinase/Akt in human periodontal ligament cells显示文摘 | Yongchaitrakul T Manokawinchoke J Pavasant P | 2009 | J Periodontal Res2009，44，6： | 1 |
| 9 | Internal liquid circulation in annulus sparged internal loop airlift contactors 显示文摘 | Wongsuchoto P Pavasant P | 2004 | Chemical Engineering Journal2004，100，： | 1 |
| 10 | High performance biosorbent Caulerpa lentillifera for basic dye removal显示文摘 | Marungrueng K Pavasant P | 2007 | Bioresource Technology2007，98，8： | 1 |
| 11 | Iron increases MMP-9 expression through activation of AP-1 via ERK/Akt pathway in human head and neck squamous carcinoma cells显示文摘 | Kaomongkolgit R Cheepsunthorn P Pavasant P | 2008 | Oral Oncol2008，44，6： | 1 |
| 12 | Comparison of extraction methods for recovery of astaxanthin from Haertococcus pluvialis显示文摘 | Ruer-ngam D Shotipruk A Pavasant P | 2011 | Separation Science and Technology2011，46，1： | 1 |
| 13 | Microwave-assisted extraction of antioxidative anthraquinones from roots of Morindacitrifolia 显示文摘 | Hemwimon S Pavasant P Shotipruk A | 2007 | Sep Puri Technol2007，54，： | 1 |
| 14 | Biosorption of Cu2+, Cd2+, Pb2+, and Znz* using dried marine grenmacroalga Capulerpalentillifera 显示文摘 | PAVASANT P APIRATIKUL R SUNGKHUM V SURHIPARINYANONT P WATTANACHIRA S MARHABA T F | 2006 | Bioresource Technology2006，97，18： | 1 |
| 15 | Subcritical water extraction of anthraquinones from the roots of Morinda citrifolia 显示文摘 | SHOTIPRUK A KIATSONGSERM J PAVASANT P | 2004 | Bioteehnology progress2004，20，： | 1 |
| 16 | Internal liquid circulation in annulus sparged internal loop airlift contactors显示文摘 | Wongsuchoto P Pavasant P | 2004 | Chemical Engineering Journal2004，100，13： | 1 |
| 17 | Detoxification of industrial wastewaters in an extractive membrane bioteactor 显示文摘 | Livingston A G dos Santos L M F Pavasant P | 1996 | Wat Sci Tech1996，33，： | 1 |
| 18 | Encapsulation of Haematococcus pluvialis using chi-tosan for astaxanthin stability enhancement显示文摘 | Kittikaiwan P Powthongsook S Pavasant P | 2007 | Car- bohydrate Polymers2007，70，4： | 1 |
| 19 | In vitro biocompatibility of schwann cells on surfaces of biocompatible polymeric electrospunfibrous and solution-cast film scaffolds 显示文摘 | Sangsanoh P Suwantong O Pavasant P | 2007 | Biomacromolecules2007，8，5： | 1 |
| 20 | Ultrasound-assis-ted extraction of anthraquinones from roots of Morinda cit-rifolia显示文摘 | Hemwimol S Pavasant P Shotipruk A | 2006 | Ultrason Sonochem2006，13，6： | 1 |
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