scholarly journals Variability of production characteristics of distinguished lines of bees in western Serbia

2011 ◽  
Vol 27 (3) ◽  
pp. 1379-1386
Author(s):  
N. Nedic ◽  
Z. Stojanovic ◽  
G. Jevtic ◽  
N. Plavsa ◽  
K. Matovic
Keyword(s):  
Honey Bees ◽  
High Performance ◽  
Average Yield ◽  
Selected Lines ◽  
High Quality ◽  
Performance Results ◽  
Queen Mothers ◽  
Production Characteristics

Condition for achieving high performance results in beekeeping is focused on the use of high-quality breeding queen bee. Because that a large amount of research are based on the examination of properties of selected lines of bees and choosing the best queen mothers in the aim of selection and improving the production characteristics of honey bees from the territory of Serbia. The amount of bees, brood, honey and pollen was investigated in two spring and one autumn survey and productivity controlled in the pasture of accacia. Line 1 had the greatest amount of brood (1.23, 4.04 and 5.39), while line 3 had the best spring development. The best quality of brood in all three exams had the lines 1 and 3 (3.00, 3.00 and 2.95) as well as the best productivity compared to the average yield of all other three lines. All tested lines were exhibited variability, which provides enough possibility for their further improvement and single out the mother queenbees with best results.

Interaction of Physiology Character - Secondary Metabolic of Fusarium oxysporum on Tomatoes of Fusarium Wilt Symptom

2019 ◽  
Vol 967 ◽  
pp. 95-100
Author(s):  
Abdul Azis Ambar ◽  
Henny Setyawati ◽  
Nur Ilmi
Keyword(s):  
High Performance Liquid Chromatography ◽  
Fusarium Oxysporum ◽  
Fusarium Wilt ◽  
High Performance ◽  
Secondary Compounds ◽  
High Quality ◽  
Code Analysis ◽  
Wilt Symptom ◽  
The Relationship

Fusarium oxysporum (F. oxysporum) is the pathogen that caused fusarium wilt diseases on the tomatoes. The rise of the symptom was caused by secondary metabolic produced by F. oxysporum. The associated with the level of secondary metabolic pathogenesis that cause symptoms of wilt on tomatoes, but secondary metabolic excreted by F. oxysporum was not necessarily wilt in a plant. The phenomenon caused F. oxysporum producing secondary metabolic in the different concentration, either its quantity or quality. The nature of physiology being tested, observed by growing 4 isolates using a medium PDA on the temperature of 10, 15, 20, 25, 30, and 35 °C. The content of secondary metabolic measured on the four isolates using the Notz et al., (2002) and analyzed by using High-Performance Liquid Chromatography (HPLC). The results of the analysis of the nature of the physiological (colour colonies) were that every isolate planted for 8 days shows the variation of white, white redness, white yellowness until purpleness. Based on Methuen Handbook of Colour (Kornerup & Wanscher, 1978), generally isolates tested shows a bright colour, signaled with A letter at every code. Analysis HPLC on the results of secondary metabolic, either quantity or quality, sequentially were: isolates BAR (3; 1,997 ppm); ENR (3; 5,105 ppm); SID (4; 2,135 ppm) and MAL (5; 2,065 rpm). If it was seen by the relationship between the colour of colonies with the production of the secondary metabolic compound, it seemed that the older or darker colonies’ colour the more secondary compounds formed, but dark or old colonies’ colour does not determine a high quality of acid fusaric produced. Keywords: Colonies colour, F. oxysporum, secondary metabolic .

Developing a scale for measuring high performance partnerships

2015 ◽  
Vol 8 (1) ◽  
pp. 87-108 ◽  
Author(s):  
André de Waal ◽  
Robert Goedegebuure ◽  
Eveline Hinfelaar
Keyword(s):  
Value Chain ◽  
High Performance ◽  
Strong Relationship ◽  
Literature Study ◽  
High Quality ◽  
Content Type ◽  
World Class ◽  
Potential Factors ◽  
Cable Company

Purpose – The importance of partnerships to organizational success has increased considerably the past decennia and many organizations strive at creating high-performance partnerships (HPPs). For this to happen, organizations in the partnerships have to be of high quality and their collaborations should be world-class. Whereas the factors that create high-performance organizations (HPO) are by now reasonably well established, the HPP factors are still unclear. The purpose of this paper is to develop a scale for measuring the factors of importance for creating and maintaining HPPs, and relates these factors to the factors of the HPO framework and to the success of the partnership. Design/methodology/approach – During a literature study ten potential factors of importance for creating and maintaining HPPs were identified. These potential factors were put in a questionnaire, together with the factors that create the HPO and the factor that measures the success of the partnership. This questionnaire was administered to a cable company, which was working on becoming an HPO, and four of its main suppliers. The data were subjected to a factor analysis which yielded a HPP framework consisting of three factors and 19 underlying characteristics. In addition, these HPP factors were put in a regression analysis with the factors of the HPO framework and the success of the partnership factor. Findings – The research results show a strong relationship between three HPP factors, the five HPO factors, and the success of a partnership factor. Research limitations/implications – This research adds to the literature by extending the concept of HPOs to the value chain these HPOs operate in. Thus the research into the factors of successful partnerships has been brought forward. The practical benefit of the research is that organizations can use the HPP factors to increase the quality of the partnerships they have with their suppliers and customers. Originality/value – There is much literature on partnerships but not so much on partnerships between organizations which strive to become a HPOs, and in the process need to create partnership of high quality.

scholarly journals Optimization of the profile and material of wire contacts for an IR photodetector

2021 ◽  
Vol 2086 (1) ◽  
pp. 012085
Author(s):  
A V Kamarchuk ◽  
D A Bauman ◽  
A I Marchenko
Keyword(s):  
High Performance ◽  
Dynamic Range ◽  
Thermal Characteristics ◽  
Practical Interest ◽  
High Sensitivity ◽  
Gold Wire ◽  
High Quality ◽  
Quality Design ◽  
Low Costs

Abstract The study is devoted to the influence of the choice of geometry and materials of wire contacts on the reflection coefficient and thermal characteristics of the photodetector and the quality of the device design. The process of diffusion of materials of wire contacts and contact pads on a photodetector crystal is investigated. The studies were carried out on samples that are rather small in size (250x250x400 um). During the experiment, 4 main types of loop geometry were selected (main loop, reverse loop, double reverse loop, long loop). The loops were formed using a gold wire 25 μm in diameter. The quality of microwelds was investigated in 3 ways: shear and pull-off tests, optical observation using a scanning electron microscope (SEM), and contact resistance measurement. The aim of the work is to create a high-quality design of an IR photodetector, which allows achieving a high sensitivity (at least 0.5 A / W), a large dynamic range (at least 40 dB) and low indicators of dark current values. The developed technology ensures high quality of the photodetector design. Due to the low costs of this technological process (wire material, the number of operations required for installation), relative to other technologies, which allows maintaining high performance in the technical component of the photodetector, the installation method may be of practical interest in production.

scholarly journals HOW HIGH ARE THE PERFORMANCES OF ORGANIZATIONS OPERATING IN SERBIA?

2019 ◽  
pp. 215 ◽  
Author(s):  
Vuk Miletić ◽  
Slavomir Miletić ◽  
Nemanja Berber
Keyword(s):  
High Performance ◽  
Business Excellence ◽  
Key Factor ◽  
Speed To Market ◽  
Performance Development ◽  
Quality Of Products ◽  
Performance Results ◽  
Powerful Process ◽  
Organizational Performances

In the conditions of growing competition on the market, organizations must ensure their sustainability, first of all, by implementing a systemic concept of business conduct in which the management is recognized as a powerful process of achieving high organizational performances. It is a concept that enables the meeting of the needs of consumers on a level different to their target value. In this sense, organizations must be structured in such a way as to fulfill certain conditions and criteria thanks to which sustainably high performance is created, which is, in fact, the goal of this research. Such performance is created as a result of the development of management within key areas of operation – the quality of products and services, production cost, speed to market, and innovating and developing such products and services. Success of such organizations greatly depends on the managers’ ability to develop and keep a talented workforce, which is a key factor in high performance development. By mastering change, outstandingly managing and controlling the future, assumptions for achieving business excellence and achieving high performance results are created. To confirm the starting hypothesis, the method of analysis, the method of synthesis and the method of multiple comparison and statistical test are used.

Preliminary report on the use of high performance adsorbents in co-refining raw sugar in beet factories

2014 ◽  
pp. 295-297
Author(s):  
Ahmed S. Vawda ◽  
Emmanuel M. Sarir ◽  
Carlos A. Donado
Keyword(s):  
Preliminary Report ◽  
High Performance ◽  
High Quality ◽  
Sugar Factory ◽  
Beet Sugar ◽  
Reducing Ability ◽  
Raw Sugar ◽  
White Sugar

Due to the fact that a beet sugar factory has a lower colour reducing ability and since cane and beet syrups contain different type of colourants the amount of raw sugar added is limited. The challenge is to control the amount of raw sugar added while still delivering a high quality of white sugar. This paper focuses on the removal of the colourants that are preferentially transferred to the surface of the crystal, thereby allowing the beet factory to increase the amount of raw sugar blended into the process without the typical problems associated with this practice.

scholarly journals Creation of an automated system for measuring technological parameters in the rubber production line

2019 ◽  
Vol 81 (3) ◽  
pp. 225-230
Author(s):  
V. S. Zhirkova ◽  
N. L. Kleymenova ◽  
O. P. Dvoryaninova ◽  
L. I. Nazina ◽  
S. V. Ershov
Keyword(s):  
Production Process ◽  
Technological Process ◽  
Production Line ◽  
High Performance ◽  
Automated System ◽  
Automation System ◽  
Rubber Compound ◽  
Technological Parameters ◽  
High Quality

The introduction of an automated control system on the production line of the rubber compound will reduce the influence of the human factor on the quality of rubber products, which will lead to a significant improvement in the operational and physico-mechanical characteristics of the final product. Also, the development of this system will create a centralized data collection system for creating reports on technological operations of the production process. To obtain high-quality products, it is necessary to control and maintain all technological parameters during equipment operation at the same level, modern means of registration and parameter management. In the production of rubber compounds, it is necessary to ensure a high degree of automation of the main technological equipment, which will make it possible to more accurately dose the ingredients, including dusting ones, to conduct the process in a given temperature regime for the time required to obtain high-quality products. The implementation of automatic control during the use of high-performance equipment is not possible without the use of measuring and control equipment. The article is devoted to the problem of automation of a system for measuring technological parameters on a rubber compound production line in order to improve the quality of manufactured products. The analysis of the technological process is carried out, the controlled parameters of not only the modes of the technological process, but also of raw materials, semi-finished products and finished products are selected. The choice of instruments and local automation equipment is presented, as well as the choice of an industrial microcontroller with which control is carried out at the lower level of an integrated automation system. A functional diagram of the automation of the rubber compound production process is proposed, which will allow to obtain a product with quality indicators corresponding to the regulated level.

High Performance Thermal Conductive Sheets Made of Carbon Fibers

2011 ◽  
Author(s):  
Keisuke Aramaki ◽  
Hiroyuki Ryoson ◽  
Yuichi Ishida
Keyword(s):  
Thermal Conductivity ◽  
Carbon Fibers ◽  
High Performance ◽  
Large Scale ◽  
Cooling System ◽  
Thermal Contact ◽  
Thickness Direction ◽  
High Quality ◽  
Process Step

Today, the quality of LCD (Liquid Crystal Display) TVs has improved along with the quality of the installed LSI (Large Scale Integration) Thus, the cooling system needs to have high performance. However, LCD TV requires a large area but thin cooling system, so the TIM in which used in LCD TV requires highly softness. Thus we have developed high-quality yet soft thermal conductive sheets in which carbon fibers are directed in the thickness direction. The thermal conductivity of the 2-mm-thick sheets is more than 23 W/mK, and the compressibility is more than 10%. In this case the thermal conductivity was measured in accordance with ASTM D5470. The compressibility means the ratio of the difference between the initial thickness and the thickness when the sheets were loaded. The carbon fibers are more than 100 μm long and about 10 μm in diameter. This sheet contains alumina and aluminum nitride particles. The manufacturing process for the sheet is as follows. Step 1: The mixing process. Step 2: The resin including the carbon fibers and the particles is pressed into a long rectangular cast. Step 3: The resin is heated to harden it. Step 4: The resin is sliced into sheets. In step 1, because the carbon fibers are long, the fibers are likely affected by shear stress. Thus, the fibers are aligned in a lengthwise direction. In Step 4, we used a supersonic wave cutter to achieve ideal slicing, thereby reducing the thermal contact resistance. These processes produced high-quality yet soft thermal conductive sheets. In these processes, the carbon fibers aligned in the thickness direction, which was determined in an SEM observation. Moreover, we found that, by slicing in the orientation direction at inclining angles, only the softness improved, without any deterioration in the thermal conductivity.

Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure

2020 ◽  
Vol 76 (2) ◽  
pp. 139-142
Author(s):  
A. T. Kunakbaeva ◽  
A. M. Stolyarov ◽  
M. V. Potapova
Keyword(s):  
Regression Analysis ◽  
Continuous Casting ◽  
Internal Structure ◽  
Sulfur Content ◽  
Manganese Content ◽  
High Quality ◽  
Correlation And Regression Analysis ◽  
Cutting Steel ◽  
Continuously Cast

Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data processing by application of correlation and regression analysis were the research methods. The array of production data of 43 heats of free-cutting steel of grade A12 was studied. Steel casting on a five-strand radial type continuous casting machine was carried out by various methods of metal pouring from tundish into the molds. Metal of 19 heats was poured with an open stream, and 24 heats – by a closed stream through submerged nozzles with a vertical hole. High-quality billets had a cross-sectional size of 150×150 mm. The macrostructure of high-quality square billets made of free-cutting steel of A12 grade is characterized by the presence of central porosity, axial segregation and peripheral point contamination, the degree of development of which was in the range from 1.5 to 2.0 points, segregation cracks and strips – about 1.0 points. In the course of casting with an open stream, almost all of these defects are more developed comparing with the casting by a closed stream. As a result of correlation and regression analysis, linear dependences of the development degree of segregation cracks and strips both axial and angular on the sulfur content in steel and on the ratio of manganese content to sulfur content were established. The degree of these defects development increases with growing of sulfur content in steel of A12 grade. These defects had especially strong development when sulfur content in steel was of more than 0.10%. To improve the quality of cast metal, it is necessary to have the ratio of the manganese content to the sulfur content in the metal more than eight.

Femtocell Selection Scheme for Reducing Unnecessary Handover and Enhancing Downlink QoS in Cognitive Femtocell Networks

2017 ◽  
Author(s):  
Hoang Nhu Dong ◽  
Hoang Nam Nguyen ◽  
Hoang Trong Minh ◽  
Takahiko Saba
Keyword(s):  
Cellular Networks ◽  
Estimation Methods ◽  
Mobility Prediction ◽  
Capacity Estimation ◽  
Femtocell Networks ◽  
Selection Scheme ◽  
Indoor Communications ◽  
Performance Results ◽  
Cognitive Femtocell

Femtocell networks have been proposed for indoor communications as the extension of cellular networks for enhancing coverage performance. Because femtocells have small coverage radius, typically from 15 to 30 meters, a femtocell user (FU) walking at low speed can still make several femtocell-to-femtocell handovers during its connection. When performing a femtocell-to-femtocell handover, femtocell selection used to select the target handover femtocell has to be able not only to reduce unnecessary handovers and but also to support FU’s quality of service (QoS). In the paper, we propose a femtocell selection scheme for femtocell-tofemtocell handover, named Mobility Prediction and Capacity Estimation based scheme (MPCE-based scheme), which has the advantages of the mobility prediction and femtocell’s available capacity estimation methods. Performance results obtained by computer simulation show that the proposed MPCE-based scheme can reduce unnecessary femtocell-tofemtocell handovers, maintain low data delay and improve the throughput of femtocell users. DOI: 10.32913/rd-ict.vol3.no14.536

Experience of clinical testing of personal telemedicine system ‘Obereg’ for remote monitoring of patients in intensive care units

2020 ◽  
pp. 52-58 ◽  
Author(s):  
A. A. Eryomenko ◽  
N. V. Rostunova ◽  
S. A. Budagyan ◽  
V. V. Stets
Keyword(s):  
Intensive Care ◽  
Intensive Care Units ◽  
Remote Monitoring ◽  
Clinical Testing ◽  
Transportation Of Patients ◽  
High Quality ◽  
Telemedicine System ◽  
Accuracy Of Measurements ◽  
Hospital Equipment

The experience of clinical testing of the personal telemedicine system ‘Obereg’ for remote monitoring of patients at the intensive care units of leading Russian clinics is described. The high quality of communication with the remote receiving devices of doctors, the accuracy of measurements, resistance to interference from various hospital equipment and the absence of its own impact on such equipment were confirmed. There are significant advantages compared to stationary patient monitors, in particular, for intra and out-of-hospital transportation of patients.

Sign in / Sign up

Export Citation Format

Share Document