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- 저자 : Binns, Colin W. (검색결과 58 건)
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Binns, M.,Lee, S.,Yeo, Y.K.,Lee, J.H.,Moon, J.H.,Yeo, J.g.,Kim, J.K. Elsevier Scientific Pub. Co 2016 Journal of membrane science Vol.497 No.-
Gas separation membranes allow the preferential removal of certain gases from a mixture of gases. If the separation objective is to obtain high product purity and either high removal efficiency or high product recovery it is often necessary to implement a multi-stage network of membranes. However, in the literature most modelling approaches consider the simulation of single-stage membranes. Hence, the aim of this study is to identify stable and computationally efficient strategies for simulating complex multi-stage membrane systems. For this purpose a multi-stage membrane modelling framework is developed and six different stable solution strategies are evaluated and compared in terms of the computational effort required to solve the resulting sets of equations. These solution strategies vary according to the sequence in which the individual membrane models are solved (sequential and simultaneous approaches) and the manner in which those membrane models are initialised. In all these strategies a Newton-Raphson method is employed to solve the mass balance equations in both single-stage and multi-stage membrane systems. Comparisons are made using example simulations of 10 different configurations of membranes containing 1-4 membranes with different numbers of connections and recycle streams present.
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Translating nutrition science into Dietary Guidelines
Binns, Colin,Lee, Mi Kyung 대한영양사협회 2001 대한영양사협회 학술지 Vol.7 No.2
It is important to supply adequate nutrition to critically ill patients, whose gastrointestinal system is properly functioning, through the enteral tube feeding if oral intake is impossible. In this study we investigated the changes in nutritional status with enteral tube feeding according to the volume required. We investigated the volume ordered according to the patient's requirements, volume infused according to the volume ordered in 41 enteral tube feeding patients in intensive care unit from Jannuary to July, 2000. Body weight, serum albumin level, and total lymphocyte count were evaluated to assess nutritional status. The mean fasting period was 5 days before the enteral feeding and patients whose fasting period over 3 days were 51%. The mean enteral tube feeding period was 29 days and method of feeding was nasogastric, bolus feeding 6 times per day. The volume ordered was 69.7% of the patients' recommended calorie and volume infused was 86.6% of their volume prescribed. Accordingly, the volume infused was estimated 61.7% of their volume required. Only 44.6% of their reqiured volume was infused within 3 days after enteral tube feeding was started. It took 16 days in average to meet the patients' recommended calorie; 56% of subjects still did not fully met their requirements by the end point. Among the impeding factors in supplying enteral tube feeding, factors related to the number of feeding were high residual volume in stomach, vomiting, gastrointestinal bleeding, abdominal distension and surgery. Factors related to the actual infused volume were diarrhea, gastrointestinal bleeding, abdominal distension, airway management and tube reinsertion. Significant correlations were shown between the volume infused and changes in both the patients' weight and serum albumin level. Deviding the subjects into two groups by their infused volume, less than 70% and more than that, we compared the two to come up with a significant difference in their serum albumin level, -0.23 vs 0.21, and their body weight, -4.52 vs 0.12. In enteral tube feeding, the volume delivered in sufficient to the patients' energy requirement can affect their nutritional status in critically ill patient; adequate nutritional management plan is essential It is necessary to make every effort to educate clinical staff and to set up a unified management program to prescribe adequate ammount of energy for the patient's nutritional requirement.
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Analysis of hybrid membrane and chemical absorption systems for CO2 capture
binns michael john,오세영,곽동훈,김진국 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.3
Amine-based absorption of CO2 is currently the industry standard technology for capturing CO2 emittedfrom power plants, refineries and other large chemical plants. However, more recently there have been a number ofcompeting technologies under consideration, including the use of membranes for CO2 separation and purification. Weconstructed and analyzed two different hybrid configurations combining and connecting chemical absorption withmembrane separation. For a particular flue gas which is currently treated with amine-based chemical absorption at apilot plant we considered and tested how membranes could be integrated to improve the performance of the CO2 capture. In particular we looked at the CO2 removal efficiency and the energy requirements. Sensitivity analysis was performedvarying the size of the membranes and the solvent flow rate.
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Biofuel production: Modelling of thermochemical conversion
( Michael John Binns ) 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
Biomass has the potential to generate energy and fuels through various conversion processes. Thermochemical conversion can be applied to any source of biomass to generate fuels such as syngas. In this study computer modelling is utilized to predict the performance of gasification processes for converting different sources of biomass into syngas. This modelling approach is used to investigate the most appropriate type of biomass to identify optimal operating conditions.
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Insect Response to Climate Change: What are We Testing for?
Jung M.-P.,Andrew N.R.,Hill S.J.,Binns M.,Ridley E.V.,Bahar M.H.,Khusro M.,Yates M.,Fyfe C. 한국응용곤충학회 2012 한국응용곤충학회 학술대회논문집 Vol.2012 No.10
Understanding how researchers are tackling globally important issues, such as climate change, is crucial to identify whether current research is comprehensive enough to make substantive predictions about general responses to climate change. We assessed the type of studies being conducted by researchers to understand the impacts of climate change on insects, published. Most published research is generated from Europe and North America and being dedicated to core data analysis, with reviews being highly produced. Temperature – only is the main climate change factor being analysed, with most researchers are assessing changes in abundance or distribution/range shifts. Of most concern is the number of studies which do not specifically identify a climate change factor (ie just arm wave), the lack of studies on Hemimetabolous insects and the need for more studies to assess specific mechanistic responses to climate change.
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Lee, Sunghoon,Binns, Michael,Lee, Jung Hyun,Moon, Jong-Ho,Yeo, Jeong-gu,Yeo, Yeong-Koo,Lee, Young Moo,Kim, Jin-Kuk Elsevier 2017 Journal of membrane science Vol.541 No.-
<P><B>Abstract</B></P> <P>Numerous membrane models have been developed and tested for the simulation of membrane processes. However, these models are often either simplified or only validated with a narrow range of experimental data. For the model-based process design of membrane systems it is necessary to have a validated and accurate model which is accurate for the range of possible operating conditions under consideration. Hence, in this study a modeling framework is developed for hollow fiber membranes which can be adjusted systematically to accurately predict the performance of a given membrane. Mixed-gas (CO<SUB>2</SUB>/O<SUB>2</SUB>/N<SUB>2</SUB> and CO<SUB>2</SUB>/N<SUB>2</SUB>) separation experiments are carried out over a range of different feed conditions to evaluate membrane performance and to provide reliable measurements of gas permeance. In particular the feed pressure (1–4bar), permeate pressure (0.1–0.5bar) and feed flow rates (0.096–0.4Nm<SUP>3</SUP>/h) are varied in these experiments (the ranges specified in brackets). Interpolation of these measured permeance allows for the accurate prediction of membrane performance at any conditions inside the measured range. A tanks-in-series modeling approach is employed here where the number of tanks (used to represent the membrane behavior in a numerical formulation) can be adjusted to calibrate and fit the membrane model to experimental results. For the membranes tested in this study it is found that using a relatively small number of tanks both minimizes the difference between model and experimental results and reduces the numerical complexity in the membrane model.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Experimental results of TR and XTR membrane modules. </LI> <LI> Effective membrane modeling via tuning the number of tanks in tanks-in-series model. </LI> <LI> Regression of membrane permeance data for accurate fitting of experimental results. </LI> <LI> Validation of the model through comparison with experimental results. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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