Respiration rate is an important indicator of individual's health. Existing respiration monitoring systems are usually contact based, and so the sensing device attached to subject's body. This creates discomfort patient can interfere with normal breathing. paper presents a vision based contactless method rate. The involves image signal processing techniques extract chest abdominal movements' information from sequence video images recorded using single camera. system provided real-time...

Abstract Although object detection has achieved great success in the field of computer vision past few years, performance detecting small objects not yet ideal results. For instance, UAV aerial photography plays an important role traffic monitoring and other fields, but it faces some challenges. The images are mainly objects, resolution whom is low feature expression ability very weak. Information will be lost high-dimensional maps, this information for classification positioning objects....

Abstract Simple, efficient and noniterative algorithms are developed for the calculation of dynamics continuous countercurrent processes described by hyperbolic differential equations. The derived using method characteristics particularly useful either general quadratic or isotherms such as Langmuir isotherm. use characteristic coordinates numerical solution avoids accumulating errors that would arise from computations based on a rectangular grid real time space coordinates. proposed methods...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDynamics of a Shell-and-Tube Heat Exchanger with Finite Tube-Wall Capacity and Shell-Side ResistanceK. S. Tan I. H. SpinnerCite this: Ind. Eng. Chem. Fundamen. 1978, 17, 4, 353–358Publication Date (Print):November 1, 1978Publication History Published online1 May 2002Published inissue 1 November 1978https://pubs.acs.org/doi/10.1021/i160068a022https://doi.org/10.1021/i160068a022research-articleACS PublicationsRequest reuse permissionsArticle...

Abstract A quantitative study of cyclic fixed bed processes has been applied to binary and ternary ion exchange systems general forms isotherms. Mathematical models for simulating the operation are developed. Experimental results obtained from sodium‐calcium synthetic sea water compared with calculated results. In general, agreement is very satisfactory. significant aspect this that all transport equilibrium properties used in column dynamics calculations determined independent estimates or...

Abstract The numerical methods developed in Part I are applied to a number of important countercurrent processes. Examples involving simultaneous input disturbances, distributed Langmuir isotherms, and nonlinear coupled boundary conditions tested. These examples, if solved by previous methods, would have required interpolation or iterative procedures, but efficiently accurately the explicit algorithms coding sequence I. solutions for linear system excellent agreement with analytic solution....

Abstract Solutions are given for the transient and cyclic steady state performance of fixed bed ion exchange when operated with counter‐current regeneration. A mass transfer model which makes use linear isotherms driving force rate equations is applied in obtaining solutions to this boundary value problem. Explicit calculation methods large time parameter systems implicit small illustrated. The found predict adequately experimental results a sea water softening process.

Abstract The “hardness” components in sea water can be considerably reduced by means of a new economical fixed bed technique called “Reciprocating Flow Ion Exchange”, when used conjunction with closed cycle exchanger‐evaporator system. Removal 87.9% the calcium and 54.5% magnesium has been obtained an overall flow rate 5.0 U. S. g. p. m./sq. ft. Results from bench scale 5,000 d. pilot plant were identical. virtually continuous cyclic steady‐state process requires small amount exchanger (0.5...

Abstract Solutions for fixed bed ion exchange based on a linear mass transfer model (linear isotherm and driving force rate equation) general initial boundary conditions are presented. The solutions applied to the study of cyclic operation equations describing both transient processes co‐current regeneration derived. Examples which illustrate simplicity application analytical discussed.