RiKA Presentation @ SPE Houston - February 2009hdphan
An innovative solution for clarified polypropylene was presented. RiKACLEAR PC1 was introduced as a new non-acetal sorbitol clarifier that provides low haze and excellent stiffness with superior long-term performance compared to current industry standards. Studies showed PC1 performs well at low dosing levels and has a wide processing window. It is a reliable and compatible clarifier that requires no plate-out. PC1 was approved by the FDA for use in food contact applications at concentrations up to 2500ppm. In conclusion, PC1 was presented as a complete clarifying solution for polypropylene with advantages over traditional clarifiers in clarity, mechanical properties, compatibility and regulatory compliance.
This document summarizes research on producing activated carbon from waste tea using potassium carbonate (K2CO3) as the activating agent. The objectives were to use waste tea as a raw material and determine how process parameters influence the activated carbon characteristics. Waste tea was carbonized at different temperatures and times, with varying K2CO3 amounts and impregnation periods. Testing showed that the surface area, yield, micropore and mesopore volumes depended on the carbonization conditions and K2CO3 levels. Micropores predominantly formed between 500-800°C, while mesopores increased at 900°C. Waste tea proved a potential low-cost source for high surface area, porous activated carbon.
The document discusses salt-free dyeing of cotton with reactive dyes using cationic agents. It aims to study the feasibility of using cationic agents instead of salt for dyeing cotton with reactive dyes. Various cationic agents are used to pretreat cotton via exhaust and pad-dry methods, followed by exhaust dyeing without salt. Dye exhaustion and color yield are compared for different cationic agents and pretreatment methods. Results show that pretreatment with cationic agents increases dye exhaustion and color yield compared to dyeing with salt. Tinofix ECO gives the highest dye exhaustion and color yield for most dyes tested. The study suggests cationic agents can enable salt-free dyeing of cotton with reactive
AiChE National Meeting 2012 Pittsburgh Presentation Flow Continuousdominev
1) In-situ FTIR spectroscopy using a ReactIR flow cell allows for real-time monitoring and analysis of continuous chemical reactions without interrupting flow.
2) Case studies demonstrated its use in optimizing a continuous ozonolysis reaction for safer API production, achieving a 2.7kg yield in 4 days.
3) Rapid screening and optimization of a Doebner modification reaction was also demonstrated, identifying optimal conditions within hours using on-the-fly variation of temperature and residence time analyzed via the in-situ FTIR.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
The document summarizes two methods for synthesizing nanostructured ceramic powders: the mimic alkoxide method and hydrothermal synthesis.
The mimic alkoxide method involves dissolving a cerium precursor in alcohol and adding it dropwise to a precipitating solution, producing nanocrystalline powder with primary particles around 15nm that are well-sintered at lower temperatures than aqueous precipitation.
Hydrothermal synthesis uses high-temperature high-pressure water to precipitate oxides from precursor solutions, producing crystalline anhydrous powder without needing calcination or milling, and employing inexpensive raw materials. It is highlighted for making solid-solution particles for multilayer ceramic capacitors.
This document summarizes research on two proteins - Human Retinol Binding Protein-4 (RBP4) and Kvβ2, a subunit of the Kv1 potassium channel. For RBP4, the researcher optimized PCR conditions to amplify the gene and assessed RBP4's proposed role in insulin resistance and diabetes. For Kvβ2, the researcher overexpressed and purified the protein, then tested the inhibitory effects of rutin, quercetin, and resveratrol on Kvβ2 activity. The results provide new insights into physiological processes involving the Shaker potassium channel and identify resveratrol as a potential inhibitor of Kvβ2 activity. Overall, the research yielded beneficial PCR guidelines
Synthesis, Structure Investigation and Dyeing Assessment of Novel Bisazo Disp...IOSR Journals
Novel bisazo-disperse dyes were prepared by the coupling of diazotized solutions of various aromatic diamines with 2,4-dihydroxybenzophenone. The resultant bisazo disperse dyes were characterized by elemental analysis, IR and 1H NMR spectral studies. The UV Visible absorption spectral data were investigated in dimethylformamide. and are discussed in terms of structural property relationship. Their dyeing assessment of bisazo disperse dyes has been made on polyester fabrics. The results show that a better hue was obtained on polyester fabrics and have mild to moderate fastness properties.
RiKA Presentation @ SPE Houston - February 2009hdphan
An innovative solution for clarified polypropylene was presented. RiKACLEAR PC1 was introduced as a new non-acetal sorbitol clarifier that provides low haze and excellent stiffness with superior long-term performance compared to current industry standards. Studies showed PC1 performs well at low dosing levels and has a wide processing window. It is a reliable and compatible clarifier that requires no plate-out. PC1 was approved by the FDA for use in food contact applications at concentrations up to 2500ppm. In conclusion, PC1 was presented as a complete clarifying solution for polypropylene with advantages over traditional clarifiers in clarity, mechanical properties, compatibility and regulatory compliance.
This document summarizes research on producing activated carbon from waste tea using potassium carbonate (K2CO3) as the activating agent. The objectives were to use waste tea as a raw material and determine how process parameters influence the activated carbon characteristics. Waste tea was carbonized at different temperatures and times, with varying K2CO3 amounts and impregnation periods. Testing showed that the surface area, yield, micropore and mesopore volumes depended on the carbonization conditions and K2CO3 levels. Micropores predominantly formed between 500-800°C, while mesopores increased at 900°C. Waste tea proved a potential low-cost source for high surface area, porous activated carbon.
The document discusses salt-free dyeing of cotton with reactive dyes using cationic agents. It aims to study the feasibility of using cationic agents instead of salt for dyeing cotton with reactive dyes. Various cationic agents are used to pretreat cotton via exhaust and pad-dry methods, followed by exhaust dyeing without salt. Dye exhaustion and color yield are compared for different cationic agents and pretreatment methods. Results show that pretreatment with cationic agents increases dye exhaustion and color yield compared to dyeing with salt. Tinofix ECO gives the highest dye exhaustion and color yield for most dyes tested. The study suggests cationic agents can enable salt-free dyeing of cotton with reactive
AiChE National Meeting 2012 Pittsburgh Presentation Flow Continuousdominev
1) In-situ FTIR spectroscopy using a ReactIR flow cell allows for real-time monitoring and analysis of continuous chemical reactions without interrupting flow.
2) Case studies demonstrated its use in optimizing a continuous ozonolysis reaction for safer API production, achieving a 2.7kg yield in 4 days.
3) Rapid screening and optimization of a Doebner modification reaction was also demonstrated, identifying optimal conditions within hours using on-the-fly variation of temperature and residence time analyzed via the in-situ FTIR.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
The document summarizes two methods for synthesizing nanostructured ceramic powders: the mimic alkoxide method and hydrothermal synthesis.
The mimic alkoxide method involves dissolving a cerium precursor in alcohol and adding it dropwise to a precipitating solution, producing nanocrystalline powder with primary particles around 15nm that are well-sintered at lower temperatures than aqueous precipitation.
Hydrothermal synthesis uses high-temperature high-pressure water to precipitate oxides from precursor solutions, producing crystalline anhydrous powder without needing calcination or milling, and employing inexpensive raw materials. It is highlighted for making solid-solution particles for multilayer ceramic capacitors.
This document summarizes research on two proteins - Human Retinol Binding Protein-4 (RBP4) and Kvβ2, a subunit of the Kv1 potassium channel. For RBP4, the researcher optimized PCR conditions to amplify the gene and assessed RBP4's proposed role in insulin resistance and diabetes. For Kvβ2, the researcher overexpressed and purified the protein, then tested the inhibitory effects of rutin, quercetin, and resveratrol on Kvβ2 activity. The results provide new insights into physiological processes involving the Shaker potassium channel and identify resveratrol as a potential inhibitor of Kvβ2 activity. Overall, the research yielded beneficial PCR guidelines
Synthesis, Structure Investigation and Dyeing Assessment of Novel Bisazo Disp...IOSR Journals
Novel bisazo-disperse dyes were prepared by the coupling of diazotized solutions of various aromatic diamines with 2,4-dihydroxybenzophenone. The resultant bisazo disperse dyes were characterized by elemental analysis, IR and 1H NMR spectral studies. The UV Visible absorption spectral data were investigated in dimethylformamide. and are discussed in terms of structural property relationship. Their dyeing assessment of bisazo disperse dyes has been made on polyester fabrics. The results show that a better hue was obtained on polyester fabrics and have mild to moderate fastness properties.
SanBlend is a range of refined ball clays engineered for optimum casting performance in sanitaryware manufacturing. They have enhanced rheological properties, greater casting stability and consistency compared to traditional clays. SanBlend clays require minimal processing, generate minimal waste, and can improve the performance of local clays. Testing showed that formulations using SanBlend had improved particle size distribution, rheology, density, and casting rate compared to local clay formulations, resulting in higher factory yields.
This document summarizes an experiment on using the aquatic fern Salvinia molesta to decolorize and detoxify effluent from the textile industry. Key findings include:
- S. molesta was able to decolorize various textile dyes by 48-76% within 60 hours when tested individually, and decolorized Rubine GFL by 97% within 72 hours.
- When exposed to a mixture of dyes and real textile effluent in the lab, S. molesta reduced several pollution parameters like COD and BOD by 65-84% after treatment.
- Anatomical analysis showed changes in the stem of S. molesta when exposed
Research Inventy : International Journal of Engineering and Science is publis...researchinventy
The document summarizes research on treating polyvinyl chloride (PVC) waste plastic using zinc oxide to produce hydrocarbon fuel. PVC plastic was thermally degraded between 75-400°C in the presence of 5% zinc oxide and 1% activated carbon catalysts. This produced 35.6% liquid fuel, 34.47% light gas, and 29.93% solid residue. The zinc oxide helped remove chlorine from the fuel. The fuel could potentially be used as a refinery feedstock after further treatment to remove chlorine. The process provides a way to convert PVC plastic waste into a useful fuel.
This document discusses using in-line IR spectroscopy to analyze reactions in continuous flow systems. It describes challenges in analyzing continuous reactions and how ReactIR can provide real-time monitoring without sampling. Case studies are presented where ReactIR was used to optimize a Doebner modification reaction in a few hours, monitor a hazardous reaction involving hydrazine for safety, and troubleshoot a multi-step synthesis. ReactIR allows rapid screening and optimization of reaction conditions as well as safer handling of dangerous chemicals through continuous monitoring.
Thermodynamics and adsorption studies of rhodamine-b dye onto organoclayInnspub Net
Thermodynamics and adsorption studies were conducted with a dye of Rhoda mine-B (RB) on organoclay (OC). Adsorption of the dye was investigated with an initial dye concentration at pH 7±0.3, 298, 308 and 318 K. The adsorption experiments were carried out isothermally at three different temperatures. The Langmuir and Freundlich isotherm models were used to describe the equilibrium data and the results were discussed in details. The thermodynamic parameters such as standard free energy (∆G°), entropy change (∆S°) and enthalpy (∆H°) were calculated for OC. These values showed that adsorption of RB on OC was a spontaneous and endothermic process.
Application Note: A Rapid Procedure for Screening Transuranium Nuclides in Ur...PerkinElmer, Inc.
One of the most extensive tasks is the field of bioassay analysis is the determination of pure alpha- (and beta-) emitting radionuclides from the nuclear fuel cycle such as (234)U and (235)U, or anthropogenic (239)Pu and (241)Am in urine samples. However, any radiochemical method, which is applied to perform such analyses, has to be highly sensitive since even small amounts of incorporated radionuclides decaying by alpha emission may contribute to harmful doses to human organs.
Since alpha radiation has an extremely short penetration length in water and solid substances, direct counting of a salt residue of dry ashed urine is not possible. Therefore, complex radiochemical techniques have been developed for efficient separation of the transuranium elements from the bulk matrix. However, in addition to several purification steps, these methods require the production of almost weightless planar sources (e.g. via electrolytic deposition) in order to perform radioassays with proportional or surface barrier detector. In contrast to the extensive preparative techniques, fast methods using alpha/beta-LSC are of increasing interest. Due to the efficient detection of alpha emitters in a liquid scintillation cocktail, extensive radiochemical purification procedures are not necessary provided the sample is homogeneous in the liquid scintillation cocktail.
This study developed a new most probable number (MPN) method to enumerate hydrocarbon-degrading bacteria using 96-well microtiter plates, diesel as the sole carbon source, and resazurin as the indicator. Testing with pure cultures of Pseudomonas putida and Escherichia coli showed similar bacterial counts between the new MPN method and plate counts, and the MPN method selectively detected only P. putida. Environmental samples of compost and contaminated soil also yielded expected results, detecting low bacterial counts in compost and high counts adapted to hydrocarbons in soil. The new MPN method provides an effective way to enumerate hydrocarbon-degrading bacteria relevant to bioremediation of contaminated sites.
The document summarizes research on the application and performance of glyphosate in Turkey. It describes how glyphosate is commonly used in perennial crops and non-agricultural areas in Turkey. It then discusses experiments conducted to investigate reasons for glyphosate reportedly failing to control certain weed species. The experiments varied glyphosate formulation, dose, spray water volume and quality, weed growth stage, and climatic conditions during application. The results showed that increasing spray water volume and controlling weeds at earlier growth stages improved glyphosate efficacy. Water quality and formulation also impacted effectiveness against different weed species.
This document discusses various types of ball milling equipment used for particle size reduction in materials processing. It describes critical mill speed, proper mill speed, and considerations for milling media selection such as density, cost, and wear resistance. Planetary ball mills are highlighted for their ability to reduce milling time through planet-like movement. Attrition mills use rotating shafts to agitate grinding media and particles but have short blade lifetimes. Jet mills can finely grind hard materials through particle impaction but have high costs.
Application Note: UHPLC Separation and Detection of Bisphenol A (BPA) in Plas...PerkinElmer, Inc.
The BPA or bisphenol A has become well known over the past year as concerns for its effect on human health and well being have been raised. The concerns over BPA began with baby bottles and spread to include other types of bottles. This paper will present the extraction and HPLC analysis of children's products for BPA.
This document discusses the use of in situ FTIR spectroscopy for monitoring organic synthesis reactions in real time. It describes how ReactIR, a flow cell accessory, allows for non-destructive analysis of reactions under normal operating conditions. This enables continuous monitoring of reaction kinetics, pathways and intermediates. The document presents examples of using the real-time spectral data from ReactIR to control reaction parameters and optimize multi-step continuous flow processes. Specifically, it shows how reactant addition can be automatically controlled based on measured intermediate concentrations to improve efficiency and reduce waste. Overall, the document illustrates how in situ FTIR spectroscopy is enhancing the development, analysis and control of continuous chemical synthesis.
1. This document provides instructions for using a diagnostic kit to quantitatively determine the level of creatine kinase-MB (CK-MB) in serum and plasma samples.
2. CK-MB is an enzyme found in the heart muscle that is released when the heart muscle is damaged. Measuring CK-MB levels is useful for diagnosing and monitoring myocardial infarction.
3. The kit uses optimized UV test methods according to clinical chemistry guidelines to measure CK-MB levels by inhibiting the CK-M isoenzyme and measuring only CK-B activity, which is half of the CK-MB activity level.
The document summarizes a study that investigated the effect of phase and crystallite size on the formation of titania nanotubes through hydrothermal treatment. Specifically, it examined nanotube formation from commercial and self-prepared anatase and rutile with different crystallite sizes. The results showed that both phase and crystallite size affected nanotube formation, with rutile requiring higher temperatures than anatase to form nanotubes. Increases in crystallite size also appeared to slightly impede nanotube formation by requiring greater driving forces. Well-formed nanotubes were observed by transmission electron microscopy.
Deformulating Complex Polymer Mixtures By GPC-IR Technologymzhou45
This document summarizes a presentation on using hyphenated GPC-IR technology to de-formulate complex polymer mixtures. The presentation discusses the DiscovIR-LC system and its features for GPC-IR and HPLC-IR analysis. It provides several case studies demonstrating how GPC-IR can be used to identify individual polymer components, characterize copolymer compositions, analyze polymer additives and degradation, and more. The speaker concludes that GPC-IR is a powerful tool for de-formulating complex polymer systems and problem solving in various industries.
Out of the Shadows: Identifying Impurities in Cannabis ProductsMarkus Roggen
Highly concentrated cannabis products have seen rapid growth, as customers become more accustomed to cannabis consumption and actively seek out high-potency products. Cannabis concentrates come in various forms and product names, from Badder, Budder and Crumble to Distillate, Oil and Shatter. Those products can have THC concentrations are high as 95%, compared with less than 25% common in cannabis flower.
While the actual THC concentration can vary between 70 and 95%, what is common for all cannabis concentrates is that the total of identified compounds seldomly goes above 95% of product weight.
Delic Labs is a research venture that seeks to add fundamental scientific insight to the field of cannabis and mushroom production. In this regard, we set out to identify those compounds in the missing mass balance for cannabis concentrates. This presentation will show our latest advances in characterizing and quantifying impurities in cannabis concentrates. For example, we found reduced cannabinoid species in CBN products, THC isomers in distillates and oxidation products in CBD formulations.
The document summarizes research on reinforcing metals and polymers with graphene. Graphene has desirable properties including high strength and conductivity. The researchers produced aluminum-graphene and PDMS-graphene composites using powder metallurgy and solvent mixing. Tensile tests showed the composites had higher strength and flexibility than the base materials alone. Further work is needed to fully characterize the composites and explore applications like microfluidics.
This document provides information on refrigerants including their definition, history, classification, properties, and environmental impact. It discusses early natural refrigerants and the development of artificial refrigerants over time. Refrigerants are classified based on their working principle and chemical properties. Key criteria for refrigerant selection include thermodynamic properties, environmental and safety factors, and cost. Common synthetic refrigerants discussed are CFCs, HCFCs, HFCs, hydrocarbons, and inorganic refrigerants like ammonia and carbon dioxide.
This document provides information on refrigerants including their definition, history, classification, properties, and environmental impact. It discusses early natural refrigerants and the development of artificial refrigerants over time. Refrigerants are classified based on their working principle and chemical properties. Key criteria for refrigerant selection include thermodynamic properties, environmental and safety factors, and cost. Common synthetic refrigerants discussed are CFCs, HCFCs, HFCs, hydrocarbons, and inorganic refrigerants like ammonia and carbon dioxide.
Radioisotopes such as cesium-137, iridium-192, and gold-198 have replaced radium in brachytherapy sources. Brachytherapy involves placing sealed radioactive sources close to or inside a tumor and can be delivered at low, medium, or high dose rates. Key factors in choosing radioisotopes include half-life, radiation output, specific activity, and photon energy. Proper selection of radioisotopes and dose rates optimizes treatment effectiveness while minimizing radiation exposure.
SanBlend is a range of refined ball clays engineered for optimum casting performance in sanitaryware manufacturing. They have enhanced rheological properties, greater casting stability and consistency compared to traditional clays. SanBlend clays require minimal processing, generate minimal waste, and can improve the performance of local clays. Testing showed that formulations using SanBlend had improved particle size distribution, rheology, density, and casting rate compared to local clay formulations, resulting in higher factory yields.
This document summarizes an experiment on using the aquatic fern Salvinia molesta to decolorize and detoxify effluent from the textile industry. Key findings include:
- S. molesta was able to decolorize various textile dyes by 48-76% within 60 hours when tested individually, and decolorized Rubine GFL by 97% within 72 hours.
- When exposed to a mixture of dyes and real textile effluent in the lab, S. molesta reduced several pollution parameters like COD and BOD by 65-84% after treatment.
- Anatomical analysis showed changes in the stem of S. molesta when exposed
Research Inventy : International Journal of Engineering and Science is publis...researchinventy
The document summarizes research on treating polyvinyl chloride (PVC) waste plastic using zinc oxide to produce hydrocarbon fuel. PVC plastic was thermally degraded between 75-400°C in the presence of 5% zinc oxide and 1% activated carbon catalysts. This produced 35.6% liquid fuel, 34.47% light gas, and 29.93% solid residue. The zinc oxide helped remove chlorine from the fuel. The fuel could potentially be used as a refinery feedstock after further treatment to remove chlorine. The process provides a way to convert PVC plastic waste into a useful fuel.
This document discusses using in-line IR spectroscopy to analyze reactions in continuous flow systems. It describes challenges in analyzing continuous reactions and how ReactIR can provide real-time monitoring without sampling. Case studies are presented where ReactIR was used to optimize a Doebner modification reaction in a few hours, monitor a hazardous reaction involving hydrazine for safety, and troubleshoot a multi-step synthesis. ReactIR allows rapid screening and optimization of reaction conditions as well as safer handling of dangerous chemicals through continuous monitoring.
Thermodynamics and adsorption studies of rhodamine-b dye onto organoclayInnspub Net
Thermodynamics and adsorption studies were conducted with a dye of Rhoda mine-B (RB) on organoclay (OC). Adsorption of the dye was investigated with an initial dye concentration at pH 7±0.3, 298, 308 and 318 K. The adsorption experiments were carried out isothermally at three different temperatures. The Langmuir and Freundlich isotherm models were used to describe the equilibrium data and the results were discussed in details. The thermodynamic parameters such as standard free energy (∆G°), entropy change (∆S°) and enthalpy (∆H°) were calculated for OC. These values showed that adsorption of RB on OC was a spontaneous and endothermic process.
Application Note: A Rapid Procedure for Screening Transuranium Nuclides in Ur...PerkinElmer, Inc.
One of the most extensive tasks is the field of bioassay analysis is the determination of pure alpha- (and beta-) emitting radionuclides from the nuclear fuel cycle such as (234)U and (235)U, or anthropogenic (239)Pu and (241)Am in urine samples. However, any radiochemical method, which is applied to perform such analyses, has to be highly sensitive since even small amounts of incorporated radionuclides decaying by alpha emission may contribute to harmful doses to human organs.
Since alpha radiation has an extremely short penetration length in water and solid substances, direct counting of a salt residue of dry ashed urine is not possible. Therefore, complex radiochemical techniques have been developed for efficient separation of the transuranium elements from the bulk matrix. However, in addition to several purification steps, these methods require the production of almost weightless planar sources (e.g. via electrolytic deposition) in order to perform radioassays with proportional or surface barrier detector. In contrast to the extensive preparative techniques, fast methods using alpha/beta-LSC are of increasing interest. Due to the efficient detection of alpha emitters in a liquid scintillation cocktail, extensive radiochemical purification procedures are not necessary provided the sample is homogeneous in the liquid scintillation cocktail.
This study developed a new most probable number (MPN) method to enumerate hydrocarbon-degrading bacteria using 96-well microtiter plates, diesel as the sole carbon source, and resazurin as the indicator. Testing with pure cultures of Pseudomonas putida and Escherichia coli showed similar bacterial counts between the new MPN method and plate counts, and the MPN method selectively detected only P. putida. Environmental samples of compost and contaminated soil also yielded expected results, detecting low bacterial counts in compost and high counts adapted to hydrocarbons in soil. The new MPN method provides an effective way to enumerate hydrocarbon-degrading bacteria relevant to bioremediation of contaminated sites.
The document summarizes research on the application and performance of glyphosate in Turkey. It describes how glyphosate is commonly used in perennial crops and non-agricultural areas in Turkey. It then discusses experiments conducted to investigate reasons for glyphosate reportedly failing to control certain weed species. The experiments varied glyphosate formulation, dose, spray water volume and quality, weed growth stage, and climatic conditions during application. The results showed that increasing spray water volume and controlling weeds at earlier growth stages improved glyphosate efficacy. Water quality and formulation also impacted effectiveness against different weed species.
This document discusses various types of ball milling equipment used for particle size reduction in materials processing. It describes critical mill speed, proper mill speed, and considerations for milling media selection such as density, cost, and wear resistance. Planetary ball mills are highlighted for their ability to reduce milling time through planet-like movement. Attrition mills use rotating shafts to agitate grinding media and particles but have short blade lifetimes. Jet mills can finely grind hard materials through particle impaction but have high costs.
Application Note: UHPLC Separation and Detection of Bisphenol A (BPA) in Plas...PerkinElmer, Inc.
The BPA or bisphenol A has become well known over the past year as concerns for its effect on human health and well being have been raised. The concerns over BPA began with baby bottles and spread to include other types of bottles. This paper will present the extraction and HPLC analysis of children's products for BPA.
This document discusses the use of in situ FTIR spectroscopy for monitoring organic synthesis reactions in real time. It describes how ReactIR, a flow cell accessory, allows for non-destructive analysis of reactions under normal operating conditions. This enables continuous monitoring of reaction kinetics, pathways and intermediates. The document presents examples of using the real-time spectral data from ReactIR to control reaction parameters and optimize multi-step continuous flow processes. Specifically, it shows how reactant addition can be automatically controlled based on measured intermediate concentrations to improve efficiency and reduce waste. Overall, the document illustrates how in situ FTIR spectroscopy is enhancing the development, analysis and control of continuous chemical synthesis.
1. This document provides instructions for using a diagnostic kit to quantitatively determine the level of creatine kinase-MB (CK-MB) in serum and plasma samples.
2. CK-MB is an enzyme found in the heart muscle that is released when the heart muscle is damaged. Measuring CK-MB levels is useful for diagnosing and monitoring myocardial infarction.
3. The kit uses optimized UV test methods according to clinical chemistry guidelines to measure CK-MB levels by inhibiting the CK-M isoenzyme and measuring only CK-B activity, which is half of the CK-MB activity level.
The document summarizes a study that investigated the effect of phase and crystallite size on the formation of titania nanotubes through hydrothermal treatment. Specifically, it examined nanotube formation from commercial and self-prepared anatase and rutile with different crystallite sizes. The results showed that both phase and crystallite size affected nanotube formation, with rutile requiring higher temperatures than anatase to form nanotubes. Increases in crystallite size also appeared to slightly impede nanotube formation by requiring greater driving forces. Well-formed nanotubes were observed by transmission electron microscopy.
Deformulating Complex Polymer Mixtures By GPC-IR Technologymzhou45
This document summarizes a presentation on using hyphenated GPC-IR technology to de-formulate complex polymer mixtures. The presentation discusses the DiscovIR-LC system and its features for GPC-IR and HPLC-IR analysis. It provides several case studies demonstrating how GPC-IR can be used to identify individual polymer components, characterize copolymer compositions, analyze polymer additives and degradation, and more. The speaker concludes that GPC-IR is a powerful tool for de-formulating complex polymer systems and problem solving in various industries.
Out of the Shadows: Identifying Impurities in Cannabis ProductsMarkus Roggen
Highly concentrated cannabis products have seen rapid growth, as customers become more accustomed to cannabis consumption and actively seek out high-potency products. Cannabis concentrates come in various forms and product names, from Badder, Budder and Crumble to Distillate, Oil and Shatter. Those products can have THC concentrations are high as 95%, compared with less than 25% common in cannabis flower.
While the actual THC concentration can vary between 70 and 95%, what is common for all cannabis concentrates is that the total of identified compounds seldomly goes above 95% of product weight.
Delic Labs is a research venture that seeks to add fundamental scientific insight to the field of cannabis and mushroom production. In this regard, we set out to identify those compounds in the missing mass balance for cannabis concentrates. This presentation will show our latest advances in characterizing and quantifying impurities in cannabis concentrates. For example, we found reduced cannabinoid species in CBN products, THC isomers in distillates and oxidation products in CBD formulations.
The document summarizes research on reinforcing metals and polymers with graphene. Graphene has desirable properties including high strength and conductivity. The researchers produced aluminum-graphene and PDMS-graphene composites using powder metallurgy and solvent mixing. Tensile tests showed the composites had higher strength and flexibility than the base materials alone. Further work is needed to fully characterize the composites and explore applications like microfluidics.
This document provides information on refrigerants including their definition, history, classification, properties, and environmental impact. It discusses early natural refrigerants and the development of artificial refrigerants over time. Refrigerants are classified based on their working principle and chemical properties. Key criteria for refrigerant selection include thermodynamic properties, environmental and safety factors, and cost. Common synthetic refrigerants discussed are CFCs, HCFCs, HFCs, hydrocarbons, and inorganic refrigerants like ammonia and carbon dioxide.
This document provides information on refrigerants including their definition, history, classification, properties, and environmental impact. It discusses early natural refrigerants and the development of artificial refrigerants over time. Refrigerants are classified based on their working principle and chemical properties. Key criteria for refrigerant selection include thermodynamic properties, environmental and safety factors, and cost. Common synthetic refrigerants discussed are CFCs, HCFCs, HFCs, hydrocarbons, and inorganic refrigerants like ammonia and carbon dioxide.
Radioisotopes such as cesium-137, iridium-192, and gold-198 have replaced radium in brachytherapy sources. Brachytherapy involves placing sealed radioactive sources close to or inside a tumor and can be delivered at low, medium, or high dose rates. Key factors in choosing radioisotopes include half-life, radiation output, specific activity, and photon energy. Proper selection of radioisotopes and dose rates optimizes treatment effectiveness while minimizing radiation exposure.
Magnetic nanoliposomes for combined hyperthermia and drug deliveryPriyank Kulshrestha
Thermosensitive Magnetic liposomes for combined hyperthermia and drug delivery
The document summarizes the development of thermosensitive magnetic liposomes containing iron oxide nanoparticles and the anticancer drug paclitaxel. The liposomes were characterized and found to release their drug payload when heated by an external alternating magnetic field via heat generated by the iron oxide nanoparticles. In vitro tests showed the magnetic liposomes were efficiently internalized by cancer cells and caused higher cytotoxicity when heated compared to untreated cells. The liposomes also showed potential for pulmonary delivery via nebulization with a portion depositing in the lungs. The system aims to provide localized hyperthermia and drug delivery for cancer treatment.
Copy of Analysis of the Decomposition of Hydrogen Peroxide.pptxJohnny Mackey
1) The document analyzes the decomposition of hydrogen peroxide catalyzed by potassium manganate and potassium iodide at different temperatures. Rate constants, activation energies, and reaction rates were calculated from changes in pressure and temperature over time.
2) Temperature was found to affect the rate of catalytic decomposition, with higher temperatures corresponding to faster reaction rates. The activation energies calculated from the data matched literature values.
3) Reflections noted that more trials would be needed for accurate results and that complex research projects require significant effort to complete.
PYReco present at Cologne Expo Cologne 14 16th Feb 2012 = FinalPYReco
The document discusses using waste tires to produce carbon black and other useful products through pyrolysis. It summarizes that pyrolyzing 50% of Europe's annual rubber waste could produce 7.5 million barrels of oil, 7.5 million barrels of gas, 1 million tons of carbon black, and 350,000 tons of steel, while saving 5 million tons of CO2 emissions. The process breaks down whole tires into shreds, which are then pyrolyzed to produce carbon black, oil, gas, and steel as useful end products.
Sarra Gaspard Université des Antilles - Recycling of sargassum for activated ...Région Guadeloupe
1) Sargassum seaweed can be used to produce activated carbon through pyrolysis. Activated carbon has many applications including water treatment, air treatment, energy storage, and more.
2) There are different methods for preparing activated carbon from sargassum including pyrolysis, physical activation, and chemical activation. The activated carbon produced from sargassum has good electrochemical and adsorption properties.
3) Research at the Université des Antilles has shown that activated carbon produced from sargassum via different procedures has good performance for supercapacitors and removal of organic pollutants and chromium from water.
The document discusses materials selection for electronic applications requiring electrostatic discharge (ESD) protection and wear resistance. It provides information on various plastic materials and their properties, focusing on amorphous versus semi-crystalline polymers. Additives like carbon powders or fibers can provide conductivity for ESD protection, while fillers and reinforcements improve wear resistance. Tests are described to evaluate wear and friction performance of materials.
Cereplast is a leading manufacturer of bio-resins that are more sustainable alternatives to petroleum-based plastics. They have developed two families of bio-resins - compostable resins for single-use items and hybrid resins for durable applications. Cereplast aims to reduce dependence on fossil fuels and promote sustainability through bio-based and renewable resins.
I have presented these slides at the Energy Harvesting 2013 event funded by the EPSRC in London in March 25th.
This contains Morgan's involvement in developing a piezoelectric based commercial solution for the emerging energy harvesting technology.
This document discusses strategies for reducing costs in lead-free electronics manufacturing. Direct cost drivers include high-temperature laminates and final finishes, while indirect drivers are increased scrap rates from delamination and pre-baking requirements. The proposed solution is to use mid-grade lead-free capable laminates that offer 15-20% cost savings through lower material costs and moisture absorption with higher reliability. Results show the new laminate meets specifications for decomposition temperature, glass transition temperature, and moisture absorption. HASL is also discussed as a lower-cost alternative to lead-free surface finishes that has benefits like long shelf life and forgiving process windows.
Radioisotopes and dose rates used for brachytherapySubhash Thakur
Radioisotopes and dose rates used for brachytherapy
This is the seminar about different radioisotopes used in brachytherapy beginning from radium to iradium and different dose rates, low dose rate, high dose rate used in brachytherapy. The significance of different dose rates and its radiobiology along with the clinical results.
Learn how TOPAS COC can improve aroma barrier and product purity. TOPAS resin also delivers many other benefits - moisture protection, easy forming, high shrink, easy opening, superb twist, and more.
Presentatie Wim van helden 20110217 warmteopslag met fase overgangsmaterialen...thermischeenergie
The document discusses using phase change materials (PCMs) for thermal energy storage, noting that PCMs allow for compact storage around small temperature differences and have applications across a wide temperature range, with ongoing research and development focused on improving PCM properties and developing new applications to address issues like subcooling.
"Polymers in Cables" takes a close and comprehensive approach to wire and cable material enhancements. Focus areas for this study include curing performance rubber, inorganic mineral dispersion, and flow and processibility optimization.
Spray SP 30/4 is a formulated system for producing rigid polyurethane foam using R 141b blowing agent. It is suitable for insulating roofs, sheds, bays, farms, storage tanks, and pipes through spraying. The foam is flame retarded and classified as B3 under DIN 4102 standards. It has a recommended formulation of 100 parts by volume polyol and 100 parts by volume isocyanate. When processed at 20-22°C with a surface temperature of 35-45°C, it has a cream time of 6-8 seconds, gel time of 15-18 seconds, and rise time of 20-25 seconds, producing a free rise density of 28-33 kg/
GS Caltex has one of the world's largest aromatics production capacities as a single-site factory. It produces various aromatic chemicals including benzene, toluene, xylene, and paraxylene through its petroleum refining and petrochemical processes. GS Caltex will continue strengthening its competitiveness to become a global energy leader by expanding its facilities and product lines.
1) The document reports on a study that examined how the concentration of graphene nanofiller within polypropylene nanocomposites affects flame retardancy, impact strength resistance, and melting point.
2) The study found that increasing the graphene concentration improved flame retardancy but reduced impact strength resistance and lowered the melting point.
3) This is because the mismatch between polypropylene and graphene properties introduced stresses that weakened the nanocomposite structure at the nanoscale.
1. This document provides instructions for using a diagnostic kit to quantitatively determine the level of creatine kinase-MB (CK-MB) in serum and plasma samples.
2. CK-MB is an enzyme found in the heart muscle that is released when the heart muscle is damaged. Measuring CK-MB levels is useful for diagnosing and monitoring myocardial infarction.
3. The kit uses optimized UV test methods developed by clinical chemistry societies to measure CK-MB levels by inhibiting the CK-M isoenzyme and measuring only CK-B activity, which is half of the CK-MB activity level.
Similar to RiKA Presentation @ AMI Conference - April 2008 (20)
5. HISTORY
DBS Poor thermal stability &
limited clarity
First Generation
MDBS Improved haze, higher thermal
stability but poor organoleptics
Second Generation
DMDBS Improved organoleptics,
but still acetal sorbitol
Third Generation
New Chemistry
DBN Sugar based technology,
RiKACLEAR PC1
high loading & plate-out
Fourth Generation
6. OLD TECHNOLOGY VS. NEW CHEMISTRY
ACETAL-SORBITOLS
Clarity X Sugar based
Tc X Yellowness
Mechanical Properties X Inferior Organoleptics
X Plate Out
OLD TECHNOLOGY
7. RiKACLEAR® PC1: NEW CHEMISTRY FOR CLARIFIED PP
Non acetal-sorbitol
Low haze and excellent stiffness
No plate-out
Superior and robust long-term clarifier
Superior thermal stability in regrind
Highly effective in non-clear applications
8. RiKACLEAR® PC1: NEW CHEMISTRY FOR CLARIFIED PP
1. Low dosing additive
2. Excellent performance in Homopolymer +
Controlled Rheology Grades (CRG)
3. Wide processing window
4. Unique mode of action
9. RiKACLEAR® PC1: NEW CHEMISTRY FOR CLARIFIED PP
1. Low dosing additive
⇒ Concentration study
2. Excellent performance in Homopolymer +
Controlled Rheology Grades (CRG)
3. Wide processing window
4. Unique mode of action
10. 1. Concentration Study RiKACLEAR PC1
• Excellent haze
• Excellent stiffness
• High impact strength
• High heat distortion temperature
• High Tc
40. 3. Processing window of PC1 at 2000ppm HAZE 1.0mm
Random Copolymer
40
IM 210 IM 220 IM 230
35
IM 240 IM 250 IM 260
30
25
(%)
20
15
10
5
0
180 200 220 240 260
Ext. Temp (ºC)
41. 3. Processing window
Wide processing window
• No processing restrictions
• Used in any manufacturing processes