EVALUATION OF MECHANICAL SYSTEMS USED IN PERFUSION

1972 ◽  
Vol 68 (2_Supplb) ◽  
pp. S44-S73 ◽  
Author(s):  
Eugene F. Bernstein
Keyword(s):  
Mechanical Systems ◽  
Organ Perfusion ◽  
Critical Factors ◽  
System 2 ◽  
Common Problems ◽  
Mechanical Components ◽  
Perfusion Experiment ◽  
Selection Of

ABSTRACT Among the critical factors in organ perfusion are (1) the mechanical components of the system, (2) the composition of the perfusate, and (3) the perfusing conditions. In this review, particular consideration is given to the pump, the oxygenator, and cannulas in such systems. Emphasis is placed upon the selection of pertinent equipment for the goals of a particular perfusion experiment, based upon the criteria of adequacy of the perfusion. Common problems in organ perfusion are summarized, and potential solutions to the perfusion problem, involving either biologic or mechanical extracorporeal systems, are suggested.

Teaching the West and the World from the Massachusetts Framework

1998 ◽  
Vol 180 (1) ◽  
pp. 67-78
Author(s):  
Paul Gagnon
Keyword(s):  
Social Sciences ◽  
Science Curriculum ◽  
World History ◽  
Student Assessment ◽  
The West ◽  
The Social ◽  
Curriculum Framework ◽  
Massachusetts History ◽  
Common Problems ◽  
Selection Of

This article summarizes how teachers may implement the Massachusetts History and Social Science Curriculum Framework as they design and teach courses in Western civilization and world history. It discusses the integration of history, geography, and the social sciences, together with suggested approaches to common problems such as the balance between Western and world studies, selection of main topics and questions, professional development, student assessment, and challenges teachers may confront.

scholarly journals Selection of Fish Raw Material Suppliers by Integrating ANP and Topsis Methods in CV. Riki Utama Mandiri

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Aula Fajar Iman Sakti ◽  
Wiwik Sulistiyowati
Keyword(s):  
Supplier Selection ◽  
Raw Materials ◽  
Rank Order ◽  
Raw Material ◽  
Network Process ◽  
The Common ◽  
Common Problems ◽  
Frozen Fish ◽  
A Company ◽  
Selection Of

CV. Riki Utama Mandiri is a company in distributing an economic fish frozen product. This company distributed any kind of retail and wholesaler, both domestic and export. They distributing many frozen fish products variant such as Patin Fillet and Shark Fin. The all raw materials of those frozen seafood was obtained by three different suppliers. The common problems found in CV. Riki Utama Mandiri mostly about raw patin fish supplier which often committed delivery delays.  The purpose of this research is to fixing the supply chain management in deciding the more accurate selections of raw materials supplier. To overcome the common problems that happen. Analytical network process (ANP) will simplify the criteria weight values and sub criteria of each supplier. Meanwhile, technique for others reference by similarity to ideal solution (TOPSIS) method is used for giving a rank order of the alternative supplier. This research is expected for being a consideration for the company in obtaining a good and more effective kind of raw supplier. We also expecting the company for tighten supplier selection more effective way so that it can fullfilled the existing standard. Also to overcome the common problems such as delivery delays, competing raw materials with uncertain quality, and difficulty in sort out the raw materials due to size issues.

RENDERING OF THE CONCEPTUAL PICTURE OF THE WORLD IN THE MORAL AND ETHICAL DISCOURSE OF THE ENGLISH DYSTOPIAN NOVEL IN UKRAINIAN TRANSLATION

2020 ◽  
Vol 2020 (31) ◽  
pp. 435-452
Author(s):  
Olena Velychenko ◽  
Yevheniia Shylova
Keyword(s):  
Cross Cultural ◽  
Original Text ◽  
Cross Cultural Communication ◽  
Ethical Discourse ◽  
Strategic Approach ◽  
Translation Analysis ◽  
The World ◽  
Common Problems ◽  
Ethical Component ◽  
Selection Of

The article considers the problem of reflecting the picture of the world of English social dystopia and its moral and ethical component in the author’s idiosyncrasy, as well as ways of its reproduction in modern translation into Ukrainian. The urgency of this issue is dictated by the dynamism and variability of society, the processes of globalization and integration of states and nations, the need to find a common language in intercultural communication, solving common problems, finding compromises through faithful cross-cultural communication, interaction and cooperation. Within the framework of the research a comprehensive translation analysis was made, which allowed to outline the concepts related to the conceptual picture of the world and moral and ethical discourse of the dystopian novel, to find out and compare the features of authorial and translational transferring of the conceptual picture of the world in moral and ethical discourse in Ukrainian translation, as well as to characterize its tactical and strategic basis and translation operations. To reproduce the culturologically complicated, but conceptually important components of the picture of the world in the dystopian novel, it is necessary to adhere to the principles of “flexibility” and “combinatoriality” in the selection of translation operations for faithful rendering of these components. It is established that the correctness and faithfulness of rendering of the conceptual picture of the world in the dystopian novel is possible due to the holistic-situational perception and translation of the original text, wide subject and rich background knowledge of the translator, his/her creative intuition, pragmatic adaptation of the source text using logical and semantic, cross-cultural and occasional ways of solving the problem and adherence to an objective tactical and strategic approach in translation.

A Multiple-Domain Matrix Support to Capture Rationale for Engineering Design Changes

2018 ◽  
Vol 18 (2) ◽  
Author(s):  
L. Siddharth ◽  
Prabir Sarkar
Keyword(s):  
Building Blocks ◽  
Knowledge Bases ◽  
Change Propagation ◽  
Design Environment ◽  
Web Based ◽  
Design Change ◽  
Design Changes ◽  
System 2 ◽  
Multiple Domain ◽  
Selection Of

Design changes are necessary to sustain the product against competition. Due to technical, social, and financial constraints, an organization can only implement a few of many change alternatives. Hence, a wise selection of a change alternative is fundamentally influential for the growth of the organization. Organizations lack knowledge bases to effectively capture rationale for a design change; i.e., identifying the potential effects a design change. In this paper, (1) we propose a knowledge base called multiple-domain matrix that comprises the relationships among different parameters that are building blocks of a product and its manufacturing system. (2) Using the indirect change propagation method, we capture these relationships to identify the potential effects of a design change. (3) We propose a cost-based metric called change propagation impact (CPI) to quantify the effects that are captured from the multiple-domain matrix. These individual pieces of work are integrated into a web-based tool called Vatram. The tool is deployed in a design environment to evaluate its usefulness and usability.

scholarly journals How to approach heterogeneous protein expression for biotechnological use: An overview

2017 ◽  
Vol 16 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Daniela Jamrichová ◽  
Lenka Tišáková ◽  
Veronika Jarábková ◽  
Andrej Godány
Keyword(s):  
Protein Purification ◽  
Recombinant Proteins ◽  
Post Translational Modifications ◽  
Test Protein ◽  
Eukaryotic Gene ◽  
Common Problems ◽  
Escherichia Coli Expression ◽  
The Individual ◽  
Selection Of

AbstractProduction of recombinant proteins in Escherichia coli expression systems has shown many advantages, as well as disadvantages, especially for biotechnological and other down-stream applications. The choice of an appropriate vector depends on the gene, to be cloned for purification procedures and other analyses. Selection of a suitable production strain plays an important role in the preparation of recombinant proteins. The main criteria for the selection of the host organism are the properties of the recombinant produced protein, its subsequent use and the total amount desired. The most common problems in eukaryotic gene expression and recombinant proteins purification are, for instance, post-translational modifications, formation of disulphide bonds, or inclusion bodies. Obtaining a purified protein is a key step enabling further characterization of its role in the biological system. Moreover, methods of protein purification have been developed in parallel with the discovery of proteins and the need for their studies and applications. After protein purification, and also between the individual purification steps, it is necessary to test protein stability under different conditions over time. Shortly, all the essential points have been briefly discussed, which could be encountered during production and purification of a recombinant protein of interest, especially from eukaryotic source and expressed heterogeneously in prokaryotic production system.

Active Synthesis of Discrete Systems as a Tool for Reduction Vibration

2013 ◽  
Vol 198 ◽  
pp. 427-432 ◽  
Author(s):  
Andrzej Dymarek ◽  
Tomasz Dzitkowski
Keyword(s):  
Force Feedback ◽  
Dynamic Properties ◽  
Vibration Reduction ◽  
Mechanical Systems ◽  
Discrete Systems ◽  
Mechanical Effect ◽  
Active Force ◽  
Active Synthesis ◽  
Proper Selection ◽  
Selection Of

The paper presents the problem of vibration reduction in designed discrete mechanical systems. The method of reduction has been based on active synthesis, which makes it possible to obtain the desired mechanical effect through the proper selection of dynamic properties of the system, including the calculation of the active force as a function of the system force feedback.

scholarly journals Dinamika Kelembagaan Hubungan Ketenagakerjaan di Masyarakat Perdesaan

2016 ◽  
Vol 27 (2) ◽  
pp. 117
Author(s):  
Endang Lestari Hastuti
Keyword(s):  
Rural Areas ◽  
Social Benefits ◽  
Decision Making Process ◽  
Employment Relations ◽  
Poor Group ◽  
Traditional Institutions ◽  
Common Problems ◽  
Fairness Principles ◽  
Institutional Participation ◽  
Selection Of

<strong>English</strong><br />In some rural areas, autonomous-formed traditional institutions keep its important roles and well-functioned. Community participation, mainly those who belong to poor group, was quite high both in institutional participation and in decision making process. The reason was that they gained some benefits, both economic and social benefits. The existing institution was adequately dynamic towards internal as well as external factors. Some of these factors could strengthen the institutions, but some others could even destroy the existing institutions. Some factors that contribute strengths to employment relations are (a) those naturally established and formed their own community, (b) selection of members appeared to have been  processed naturally, (c) facing common problems and needs, (d) obey the agreed rules of the games, (e) use simple organizational structure, and (f)  and employ fairness principles.<br /><br /><br /><strong>Indonesian</strong><br />Kelembagaan  hubungan ketenagakerjaan tradisional masih berperan dan berfungsi dengan baik dibeberapa wilayah pedesaaan, yang dibentuk secara otonom. Partisipasi masyarakat terutama golongan kurang mampu cukup tinggi, baik dalam keikutsertaannya di dalam kelembagaan, maupun dalam pengambilan keputusan. Hal ini disebabkan karena didapatkan manfaat baik secara ekonomi maupun sosial. Kelembagaan yang ada cukup dinamis terhadap faktor-faktor intern maupun  ekstern. Ke dua faktor tersebut ada yang dapat memperkuat, namun ada pula yang justru menghancurkan kelembagaan yang telah ada. Beberapa faktor yang memberikan kekuatan terhadap kelembagaan hubungan ketenagakerjaan adalah (a) lahir dan terbentuk dari dalam masyarakat sendiri, (b) proses seleksi anggota secara alamiah, (c) mempunyai masalah dan kebutuhan yang sama, (d) menjunjung tinggi aturan main yang disepakati bersama, (e) struktur organisasi sederhana, dan (f) adanya azas keadilan.

scholarly journals Etiological aspects of chronic pathology of the lymphepithelial pharyngeal ring in children at the present stage

2021 ◽  
pp. 100-105
Author(s):  
Yu. S. Preobrazhenskaya ◽  
M. V. Drozdova ◽  
S. V. Ryazantsev
Keyword(s):  
Present Stage ◽  
Adequate Treatment ◽  
Treatment Regimens ◽  
Wide Range ◽  
Common Problems ◽  
Chronic Adenoiditis ◽  
Immunomodulating Drugs ◽  
Positive Effect ◽  
Selection Of ◽  
Pharyngeal Tonsil

The lymphoepithelial pharyngeal ring is located in the entrance gate and is constantly exposed to infectious agents. Currently, chronic pathology of the lymphoepithelial pharyngeal ring remains one of the most common problems in the practice of a pediatric doctor. Hypertrophy of the pharyngeal tonsil, chronic adenoiditis, which occurs in 35.3% of children under the age of 7 years, and chronic tonsillitis, which occurs in 15-63% of cases, are among the most common diseases of childhood. Taking into account the wide range of infectious microbiota that contributes to the development of chronic pathology of the lymphoepithelial pharyngeal ring, the issue of differential diagnosis of the etiology of the disease and the selection of adequate treatment regimens remains relevant. In most cases, at the present stage, the approach to the treatment of patients with chronic inflammation of the lymphoid ring of the pharynx in children is reduced to replacing the surgical method with a conservative one with the appointment of immunocorrective and immunomodulatory drugs. The lack of a positive effect of the ongoing conservative treatment, clinical and laboratory signs of persistent streptococcal infection say us about the need for surgical treatment. At the same time, a group of frequently ill children requires special attention with the development of new regimens of the immunocorrecting and immunomodulating drugs usage.

scholarly journals EVALUATION AND SELECTION OF CANDIDATES FOR LIVER TRANSPLANTATION: AN ECONOMIC PERSPECTIVE

2020 ◽  
Vol 57 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Santiago RODRÍGUEZ ◽  
Fabio Da MOTTA ◽  
Giacomo BALBINOTO NETO ◽  
Ajacio BRANDÃO
Keyword(s):  
Liver Transplantation ◽  
Care Center ◽  
Tertiary Care ◽  
Deceased Donor ◽  
Waiting List ◽  
Transplant Center ◽  
Number Of Patients ◽  
Common Problems ◽  
Selection Of

ABSTRACT BACKGROUND: Over the next 20 years, the number of patients on the waiting list for liver transplantation (LTx) is expected to increase by 23%, while pre-LTx costs should raise by 83%. OBJECTIVE: To evaluate direct medical costs of the pre-LTx period from the perspective of a tertiary care center. METHODS: The study included 104 adult patients wait-listed for deceased donor LTx between October 2012 and May 2016 whose treatment was fully provided at the study transplant center. Clinical and economic data were obtained from electronic medical records and from a hospital management software. Outcomes of interest and costs of patients on the waiting list were compared through the Kruskal-Wallis test. A generalized linear model with logit link function was used for multivariate analysis. P-values <0.05 were considered statistically significant. RESULTS: The costs of patients who underwent LTx ($8,879.83; 95% CI 6,735.24-11,707.27; P<0.001) or who died while waiting ($6,464.73; 95% CI 3,845.75-10,867.28; P=0.04) were higher than those of patients who were excluded from the list for any reason except death ($4,647.78; 95% CI 2,469.35-8,748.04; P=0.254) or those who remained on the waiting list at the end of follow-up. CONCLUSION: Although protocols of inclusion on the waiting list vary among transplant centers, similar approaches exist and common problems should be addressed. The results of this study may help centers with similar socioeconomic realities adjust their transplant policies.

Aplicación del formalismo de Lagrangianos Controlados en la regulación de velocidad del motor de inducción trifásico

2021 ◽  
Author(s):  
◽  
Yaima González Acosta
Keyword(s):  
Mechanical Systems ◽  
Electrical Machines ◽  
Lagrangian Formalism ◽  
Control Law ◽  
Lagrange Equations ◽  
Two Phase ◽  
Main Research ◽  
Three Phase ◽  
First Time ◽  
Selection Of

In this work the Controlled Lagrangian Formalism applied to electrical machines is explored for the first time. It begins with an analysis of the purely mechanical systems, once understood, the study is carried out on a two-phase induction motor, this implying a greater degree of complexity because there is no reference that has done it before. Finally, this study is expanded to the three-phase motor, this being the main research object of the project. The main guide used was the Bloch article cite bloch2000controlled on the analysis of mechanical systems. Regarding the procedure, the first thing that is done is the selection of the generalized coordinates, the Lagrangian is proposed and the model is obtained from it through the Euler-Lagrange equations, followed by that the symmetries are identified (which in the case of MI is especially interesting because these symmetries are obvious from the choice of coordinates) and the configuration space is divided into vertical and horizontal directions, the horizontal directions are redefined and the Controlled Lagrangian is proposed. Finally, generalized forces are sought, using Noether's Theorem as support and thus establishing the control law. The development to obtain the Controlled Lagrangian and the control law is done in detail, explaining each step of the procedure and using specific algebraic methods of this formalism that are strongly based on the geometric structure of the variety of configuration. The results obtained are an approach in the direction of Controlled Lagrangians applied electrical machines.

Sign in / Sign up

Export Citation Format

Share Document