A non-lethal SPME method for insect cuticular analysis by GC-MS

2014 ◽  
Vol 6 (21) ◽  
pp. 8823-8828 ◽  
Author(s):  
Maria Juliana Ferreira-Caliman ◽  
Aline Candida Ribeiro Andrade-Silva ◽  
Maria Cláudia Guidetti-Campos ◽  
Izabel Cristina Casanova Turatti ◽  
Fábio Santos do Nascimento ◽  
...  
Keyword(s):  
Organic Solvent ◽  
New Method ◽  
And Storage

In the present study a new method involving extraction by SPME fibers and storage in an organic solvent is described and tested in an ant species,Dinoponera quadriceps.

scholarly journals Effects of Organic Solvent on Curing Behavior and Storage Stability for Waterborne Paint Containing Catalyst Encapsulated in Micelles

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 722
Author(s):  
Shuji Yomo
Keyword(s):  
Organic Solvent ◽  
Organic Solvents ◽  
Storage Stability ◽  
Dibutyltin Dilaurate ◽  
Film Properties ◽  
Surfactant Micelles ◽  
Catalytic Function ◽  
Hydrophilic Lipophilic Balance ◽  
Before And After ◽  
And Storage

In this study, a 2-pack isocyanate curing waterborne paint (without organic solvents) encapsulating dibutyltin dilaurate (hereinafter, DBTL) in nonionic surfactant micelles with an hydrophilic–lipophilic balance of 13–14 in advance releases DBTL when the micelles are collapsed at 80 °C or higher, whereby the curing progresses rapidly. On the other hand, the viscosity levels of the paint before and after being left at 40 °C for 1 h are almost the same. Organic solvents are mandatory for waterborne paints to provide paint and film properties, but they might collapse the micelles when they are formulated in the paint. In this study, we investigate whether the abovementioned paint containing organic solvents can develop switching functionality in terms of maintaining the storage stability at 40 °C and expressing a catalytic function at 80 °C to progress the curing. As a result, we find that if the solubility of the organic solvent in water at 20 °C is at least 10 g/100 mL and the boiling point is ≤200 °C, both curing and storage stability can be achieved.

A new method of electrofocusing of proteins in a pH gradient formed by the gradient of an organic solvent

1973 ◽  
Vol 75 (2) ◽  
pp. 212-214
Author(s):  
G. V. Troitskii ◽  
V. P. Zav'yalov ◽  
I. F. Kiryukhin
Keyword(s):  
Organic Solvent ◽  
Ph Gradient ◽  
New Method

A simple new method for the freeze-drying and storage of human sperm

2016 ◽  
Vol 106 (3) ◽  
pp. e307
Author(s):  
P. Patrizio ◽  
Y. Natan ◽  
Y. Barak ◽  
P. Levi Setti ◽  
A. Arav
Keyword(s):  
Freeze Drying ◽  
Human Sperm ◽  
New Method ◽  
And Storage

scholarly journals Comparison Between Conventional Solvothermal and Aqueous Solution-based Production of UiO-66-NH2: Life Cycle Assessment, Techno-economic Assessment, and Implications for CO2 Capture and Storage

2020 ◽  
Author(s):  
Hongxi Luo ◽  
Fangwei Cheng ◽  
Luke Huelsenbeck ◽  
Natalie Smith
Keyword(s):  
Aqueous Solution ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Organic Solvent ◽  
Environmental Performance ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Scale Production ◽  
And Storage ◽  
Environmental Burdens

Metal-organic frameworks (MOFs) are a new class of materials that has shown great potential in catalysis, sensing, separations, and carbon capture and storage. Conventionally, MOFs are synthesized at lab-scale using organic solvent-based systems, leading to high environmental burdens and high operating costs, which ultimately hinders the large-scale production and application of MOFs. Aqueous synthesis of MOFs overcomes such difficulty by eliminating the organic solvent, which makes it an environmentalfriendlier and economically-favorable alternative to the current production method. However, further quantitative analysis is required to compare the environmental and economic performances of the two methods. Here, we used life cycle assessment (LCA) coupled with techno-economic analysis (TEA) to evaluate the environmental and economic performances of different UiO-66-NH2 production methods. When the solvothermal method was replaced by the aqueous solution-based method, the LCA and TEA results suggest the environmental burdens and cost of UiO-66-NH2 production were reduced by up to 91% and 84%, respectively. By using aqueous solution-based method, the cradle to gate carbon footprint and production cost of UiO-66-NH2 were estimated to be 43 kg CO2 eq/kg and $15.8/kg, respectively. We further applied our LCA results to reassess the role of UiO-66-NH2 in carbon capture and storage (CCS) and compare its environmental performance with current benchmark (amine-based solvent). Our results show that UiO-66-NH2 could potentially have better environmental performance than the amine-based solvent if the number of regeneration cycles is greater than 1513. This work is the first comprehensive LCA-TEA study that quantifies the substantial environmental and economic benefits of using the aqueous solution-based systems to produce UiO-66-NH2, and the analysis in this work is intended to be a starting point for further systematic studies on the full life-cycle impacts of MOFs.

scholarly journals Comparison Between Conventional Solvothermal and Aqueous Solution-based Production of UiO-66-NH2: Life Cycle Assessment, Techno-economic Assessment, and Implications for CO2 Capture and Storage

2020 ◽  
Author(s):  
Hongxi Luo ◽  
Fangwei Cheng ◽  
Luke Huelsenbeck ◽  
Natalie Smith
Keyword(s):  
Aqueous Solution ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Organic Solvent ◽  
Environmental Performance ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Scale Production ◽  
And Storage ◽  
Environmental Burdens

Metal-organic frameworks (MOFs) are a new class of materials that has shown great potential in catalysis, sensing, separations, and carbon capture and storage. Conventionally, MOFs are synthesized at lab-scale using organic solvent-based systems, leading to high environmental burdens and high operating costs, which ultimately hinders the large-scale production and application of MOFs. Aqueous synthesis of MOFs overcomes such difficulty by eliminating the organic solvent, which makes it an environmentalfriendlier and economically-favorable alternative to the current production method. However, further quantitative analysis is required to compare the environmental and economic performances of the two methods. Here, we used life cycle assessment (LCA) coupled with techno-economic analysis (TEA) to evaluate the environmental and economic performances of different UiO-66-NH2 production methods. When the solvothermal method was replaced by the aqueous solution-based method, the LCA and TEA results suggest the environmental burdens and cost of UiO-66-NH2 production were reduced by up to 91% and 84%, respectively. By using aqueous solution-based method, the cradle to gate carbon footprint and production cost of UiO-66-NH2 were estimated to be 43 kg CO2 eq/kg and $15.8/kg, respectively. We further applied our LCA results to reassess the role of UiO-66-NH2 in carbon capture and storage (CCS) and compare its environmental performance with current benchmark (amine-based solvent). Our results show that UiO-66-NH2 could potentially have better environmental performance than the amine-based solvent if the number of regeneration cycles is greater than 1513. This work is the first comprehensive LCA-TEA study that quantifies the substantial environmental and economic benefits of using the aqueous solution-based systems to produce UiO-66-NH2, and the analysis in this work is intended to be a starting point for further systematic studies on the full life-cycle impacts of MOFs.

Method for Maintaining Viability of Clostridium perfringens in Foods During Shipment and Storage: Collaborative Study

1978 ◽  
Vol 61 (4) ◽  
pp. 785-788 ◽  
Author(s):  
Stanley M Harmon ◽  
Ana M Placencia
Keyword(s):  
Clostridium Perfringens ◽  
Collaborative Study ◽  
Food Samples ◽  
New Method ◽  
Glycerol Concentration ◽  
Dry Ice ◽  
Plate Counts ◽  
Roast Beef ◽  
Different Strains ◽  
And Storage

Abstract A collaborative study was conducted in 12 laboratories to determine the effectiveness of a new method for maintaining vegetative cells of Clostridium perfringens in viable condition during storage and transport of food specimens to the laboratory. The collaborative results showed that treatment of brown gravy and roast beef samples with an equal amount by weight of sterile buffered glycerol-sodium chloride solution to give a final 10% glycerol concentration and storage with Dry Ice for 10 days at — 56°C resulted in plate counts of C. perfringens which were 2—4 log cycles higher with 2 different strains than counts with untreated specimens stored by the usual method at — 20°C. Plate counts obtained with the treated specimens stored with Dry Ice were less than 1 log cycle lower than counts made with identical specimens before freezing for storage and shipment to the collaborators. The results with treated specimens were also more uniform among the different laboratories. Because the new method for storage and shipment of food samples was so effective for maintaining viability of the organism, the official first action method for C. perfringens (46.B01) was changed to incorporate these procedures as part of the method.

scholarly journals A New Method Without Organic Solvent to Targeted Nanodrug for Enhanced Anticancer Efficacy

2017 ◽  
Vol 12 (1) ◽  
Author(s):  
Shichao Wu ◽  
Xiangrui Yang ◽  
Mingyuan Zou ◽  
Zhenqing Hou ◽  
Jianghua Yan
Keyword(s):  
Organic Solvent ◽  
New Method ◽  
Anticancer Efficacy
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