To analyze the errors of processing data, the testing principle for jet elements is introduced and the property of testing system is theoretically and experimentally studied. On the basis of the above, the method of p...To analyze the errors of processing data, the testing principle for jet elements is introduced and the property of testing system is theoretically and experimentally studied. On the basis of the above, the method of processing data is presented and the error formulae, which are the functions of the testing system property, are derived. Finally, the methods of reducing the errors are provided. The measured results are in correspondence with the theoretical conclusion.展开更多
This study firstly defines a set of arrangement rule for perforated holes of multi-hole orifice(MO), and then presents three critical geometrical parameters including total number of performated hole, equivalent diame...This study firstly defines a set of arrangement rule for perforated holes of multi-hole orifice(MO), and then presents three critical geometrical parameters including total number of performated hole, equivalent diameter ratio and distribution density of perforated holes, which are to quantify MO structure. This paper built the throttling test apparatus for nice test MO plates, which were designed according to orthogonal theory. The experiments were conducted to investigate the effect of three critical geometerical parameters on the pressure loss coefficient of test MOs. Results show that equivalent diameter ratio is the dominant prameter affecting MO throttling characterstic.展开更多
Homogenization is concerned with obtaining the average properties of a material. The problem on its own has no easy solution, except in cases like the periodic case, when it can be obtained in closed form. In this pap...Homogenization is concerned with obtaining the average properties of a material. The problem on its own has no easy solution, except in cases like the periodic case, when it can be obtained in closed form. In this paper we consider a numerical solution of the elliptic homogenization problem for the case of rapidly varying tensor or boundary conditions. The method makes use of an adaptive finite element method to correctly capture the rapid change in the tensor or boundary condition. In the numerical experiments we vary the mesh size and do a posteriori error analysis on test problems.展开更多
Abstract： The pre and post analytical phase in a testing cycle contributes up to 93% of total laboratory errors. However, pre-analytical phase is primarily responsible for errors. Hence, it is of precise importance f...Abstract： The pre and post analytical phase in a testing cycle contributes up to 93% of total laboratory errors. However, pre-analytical phase is primarily responsible for errors. Hence, it is of precise importance for the laboratory to study error occurrence rates during the testing cycle and implement a quality improvement plan to release an accurate result. The present study was conducted during the period Jan-Nov 2014 in the Central Clinical Lab in Osmaniye State Hospital, Turkey. During period of 11 months, 626897 samples were monitored for major preanalytical problems at the receiving counter of the Central Clinical Laboratory. Among all preanalytic laboratory errors, 35.4% of the errors were associated with clotted sample, 25.5% errors with inadequate sample, and 25.3% errors with hemolysed sample in the laboratory. Assessment considering the departments showed that emergency unit had the highest error rates （hemolysis： 52.5%, lipemic： 42.9%, damaged： 34.6%, clotted： 34.2%, inadequate： 26.8%, wrong material： 17.6%, wrong barcode： 16.7%）. There was significant difference among the departments in terms of preanalytic errors （p 〈 0.001）. Based on these observations, major preanalytic errors are of great concern and needs corrective approach via proper educational programs to related personals. If this area is ignored, that can lead to negative patient outcome. However, a better specimen quality and patient satisfaction are achieved with the high quality personal-based education regarding pre-analytical errors.展开更多
文摘To analyze the errors of processing data, the testing principle for jet elements is introduced and the property of testing system is theoretically and experimentally studied. On the basis of the above, the method of processing data is presented and the error formulae, which are the functions of the testing system property, are derived. Finally, the methods of reducing the errors are provided. The measured results are in correspondence with the theoretical conclusion.
基金Sponsored by National Natural Science Foundation of China (Grant No50578049)
文摘This study firstly defines a set of arrangement rule for perforated holes of multi-hole orifice(MO), and then presents three critical geometrical parameters including total number of performated hole, equivalent diameter ratio and distribution density of perforated holes, which are to quantify MO structure. This paper built the throttling test apparatus for nice test MO plates, which were designed according to orthogonal theory. The experiments were conducted to investigate the effect of three critical geometerical parameters on the pressure loss coefficient of test MOs. Results show that equivalent diameter ratio is the dominant prameter affecting MO throttling characterstic.
文摘Homogenization is concerned with obtaining the average properties of a material. The problem on its own has no easy solution, except in cases like the periodic case, when it can be obtained in closed form. In this paper we consider a numerical solution of the elliptic homogenization problem for the case of rapidly varying tensor or boundary conditions. The method makes use of an adaptive finite element method to correctly capture the rapid change in the tensor or boundary condition. In the numerical experiments we vary the mesh size and do a posteriori error analysis on test problems.
文摘Abstract： The pre and post analytical phase in a testing cycle contributes up to 93% of total laboratory errors. However, pre-analytical phase is primarily responsible for errors. Hence, it is of precise importance for the laboratory to study error occurrence rates during the testing cycle and implement a quality improvement plan to release an accurate result. The present study was conducted during the period Jan-Nov 2014 in the Central Clinical Lab in Osmaniye State Hospital, Turkey. During period of 11 months, 626897 samples were monitored for major preanalytical problems at the receiving counter of the Central Clinical Laboratory. Among all preanalytic laboratory errors, 35.4% of the errors were associated with clotted sample, 25.5% errors with inadequate sample, and 25.3% errors with hemolysed sample in the laboratory. Assessment considering the departments showed that emergency unit had the highest error rates （hemolysis： 52.5%, lipemic： 42.9%, damaged： 34.6%, clotted： 34.2%, inadequate： 26.8%, wrong material： 17.6%, wrong barcode： 16.7%）. There was significant difference among the departments in terms of preanalytic errors （p 〈 0.001）. Based on these observations, major preanalytic errors are of great concern and needs corrective approach via proper educational programs to related personals. If this area is ignored, that can lead to negative patient outcome. However, a better specimen quality and patient satisfaction are achieved with the high quality personal-based education regarding pre-analytical errors.
