http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Performance assessment of fragrance finished cotton with cyclodextrin assisted anchoring hosts
Shelly Khanna,Swati Sharma,J. N. Chakraborty 한국의류학회 2015 Fashion and Textiles Vol.2 No.1
Infusion of textiles with aromatic essential oils makes them immense value enriched for the aesthetic dominated fashion consumers to attain cosmeto-therapeutic and medicinal benefits. However, longevity of aroma on the textile with the time passage and subsequent launderings is a major concern for researchers and consumers too. In this work, essential oils of Eucalyptus, Peppermint, Lavender, Jasmine, Clove and Cedarwood were applied directly on cotton as well as with anchoring hosts as cyclodextrin in native and modified form viz. monochlorotriazine-β-cyclodextrin (MCT-βCD) to assess their stability of retention on the fabric surface. The release rate of oils, in isolation, had revealed the disappearance of fragrances rapidly with time as a result of weak physical forces between essential oils and textile surfaces in the absence of any anchoring hosts. MCT-β-CD showed enhanced fragrance stability with added advantage of exhibiting no major change in tensile strength, stiffness and air permeability of cotton.
Plant Equipment Modeling with Model Based Systems Engineering Approach
Shelly Salim,Joon-Young Kim(김준영),Taekyong Lee(이태경),Jae-Min Cha(차재민) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Engineers use various techniques and tools in designing plant equipment. The resulting equipment designs might have different parameters and maturity levels. These models need to be integrated and verified against the process requirements. Also, equipment design has to be done rapidly to assist procurement and to enable timely construction. We propose to assist the equipment design of plant by creating models based on Model Based System Engineering (MBSE) approach. In MBSE, design data are managed as models, not as documents. Specifically, we defined the equipment design processes, requirements models, parametric models, and other supporting models that are represented as executable diagrams. We considered design activity where the equipment has been decided to be purchased from vendors rather than to be developed by the engineers. We also included an example of compressor design model with its parameter simulation and selection from catalogs. We discover that MBSE has a constraint in equipment designing, namely, it still requires domain-specific tools. This study is part of our effort to develop plant design methodology based on MBSE.
Shelly Khanna,J. N. Chakraborty 한국의류학회 2017 Fashion and Textiles Vol.4 No.1
Monochlorotriazinyl β-cyclodextrin (MCT β-CD) was employed for the inclusion complexation with oils of cedarwood, clove, eucalyptus and peppermint to assess their release behavior from functionalized cotton. The process of MCT β-CD grafting was optimized using response surface methodology with three independent factors including MCT β-CD concentration, pH and curing temperature and effect of their second order interactions on dependent variables as % nitrogen content, % graft yield, tensile strength and wash durability was examined. The interaction of MCT β-CD concentration and pH had the decisive effect on the investigated dependent variables. FTIR and % retained nitrogen confirmed the substantial retention of modified host on functionalized cotton after five vigorous wash cycles. 1HNMR characterized the full entrapment of oils within MCT β-CD cavity on cotton. All the oils were substantially retained in the inclusion complexes with the MCT β-CD before and after wash than when present uncomplexed on the treated cotton. Peppermint was the slowest to fade off and cedarwood was rapid in sublimation from the cyclodextrin moieties.
Shelly Singla,Soumen Basu,Pooja Devi 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
A hydrothermal approach (environmentally safe route) was followed to synthesize eco-friendly, nontoxic,sunlight responsive 2D/2D BiVO4/SnS2 (BVSNS) nanocomposites with varying mole ratios. BVSNSexhibits favorable band gap, high charge carrier mobility, good surface area, lower recombining capabilityrendering it highly efficient photocatalyst. The superiority of photocatalysts was then tested for thedegradation of pharmaceutical pollutants, ofloxacin (oflox) and tetracycline (TC), and photoelectrocatalytic(PEC) water splitting under sunlight illumination. The 1:3 BiVO4:SnS2 (13BVSNS) composite hadhighest decomposition efficiency of 93.7 and 80.8 % with rate constants of 0.0164 and 0.010 min1 foroflox and TC-degradation, respectively. The GC–MS analysis was also conducted to examine the intermediatesand products formed during the photocatalytic degradation of TC. The PEC water splitting experimentsrevealed that 13BVSNS photoanode exhibited highest photocurrent density of 0.21 mA/cm2 at1.23 V vs RHE. The Mott-Schottky experiments demonstrated flat band potential of -0.37 V at 1.23 Vvs RHE for the 13BVSNS electrode. As a result, 21 lmolcm2sec-1 of H2 was produced and electrodewas stable for 6 h. Reusability studies (7 runs) were used to further examine the photocatalyst’s efficacy,and post reaction characterization results justified that the materials are highly stable with a long life.
Shelly Khanna,J. N. Chakraborty 한국의류학회 2018 Fashion and Textiles Vol.5 No.1
With the progress of time, demand for healthy and hygienic clothing has gone up tremendously. Fabrics and apparels finished with mosquito repellent finishes belong to one of such highly looked out clothing’s. The present study aims at synthesis, characterization and optimization of β-Cyclodextrin citrate (β-CD CA) followed by its complexion with essential oils of cedarwood, clove, eucalyptus, peppermint, lavender and jasmine for the assessment of repellent efficacy against Anopheles Stephensi by means of arm in cage assays on cotton. Protection time, repellency (%), biting (%) and mortality (%) of inclusion complexes encapsulated with oils were evaluated. Two way ANOVA and post hoc analysis had affirmed the significant effect of essential oil type on bio-assay. Lavender and cedarwood had provided the longest protection times (210 and 160 min respectively); jasmine and peppermint were least effective showing protection times of 20 and 60 min whereas oils of eucalyptus and clove behaved as feeding deterrents. Peppermint and lavender were effective as potential repellents and cedarwood had shown supreme mortality against arthropods. Jasmine was the weakest repellent due to its flower-nectar stimulating upshot for Anopheles stephensi.
Evaluation of mucoadhesive property of gum ghatti
Shelly Jangra,Munish Ahuja,Ashok Kumar 한국약제학회 2013 Journal of Pharmaceutical Investigation Vol.43 No.6
Gum ghatti is a high molecular weight anionic polysaccharide used in food and pharmaceutically applied as binder, thickener, emulsifier and sustained release matrix as promising polysaccharide which has not been explored as mucoadhesive polymer. The present study was carried out to evaluate gum ghatti as mucoadhesive polymer by preparing buccal disc using metronidazole as model drug. The effect of varying concentration of gum ghatti and compression pressure on ex vivo bioadhesion time and in vitro release was studied using 2-factor 3-level central composite experimental design. Metronidazole loaded gum ghatti buccal discs were evaluated by weight uniformity,thickness, friability and content uniformity. Ex vivo bioadhesion time of buccal disc was measured as time taken by buccal disc to detach from chicken buccal pouch. In vitro release behavior was studied by adhering disc to the bottom of vessel using USP type II (TDT-08L Electrolab,Mumbai, India) dissolution release apparatus. The release data was fitted into various kinetic models. The prepared buccal discs were of uniform average weight,thickness, drug content and having friability less than 1 %. The results of optimization study revealed that increasing the proportion of gum ghatti results in increase in bioadhesion time and decrease the release rate while increasing compression pressure was found to increase the release rate. The present work concluded that gum ghatti is promising mucoadhesive polymer which can be used effectively.
Opportunities for microfluidic technologies in synthetic biology
Gulati, Shelly,Rouilly, Vincent,Niu, Xize,Chappell, James,Kitney, Richard I.,Edel, Joshua B.,Freemont, Paul S.,deMello, Andrew J. The Royal Society 2009 Journal of the Royal Society, Interface Vol.6 No.suppl4
<P>We introduce microfluidics technologies as a key foundational technology for synthetic biology experimentation. Recent advances in the field of microfluidics are reviewed and the potential of such a technological platform to support the rapid development of synthetic biology solutions is discussed.</P>