Determination of the aerodynamic characteristics of a concentrator with adjustable parameters

MATEC Web of Conferences ◽

10.1051/matecconf/201825103014 ◽

2018 ◽

Vol 251 ◽

pp. 03014 ◽

Cited By ~ 1

Author(s):

Rashid Sharapov ◽

Aleksandr Agarkov

Keyword(s):

Aerodynamic Characteristics ◽

Design Scheme ◽

New Type ◽

Air Flows

The paper considers a new type of dust-concentrator device. The scheme of this concentrator is presented. According to the design scheme of the concentrator, flows of particles of dusty air and changes in the velocities of the motion of air flows in it are considered. Based on this, the conclusion is made about the pressure in different sections of the concentrator.

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Trial production of γ-type energy filtering TEM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100139391 ◽

1995 ◽

Vol 53 ◽

pp. 604-605

Author(s):

Y. Taniguchi ◽

E. Nakazawa ◽

S. Taya

Keyword(s):

Magnetic Energy ◽

Electron Optics ◽

Electron Microscopic ◽

Mass Spectrometers ◽

Ion Optics ◽

Energy Filtering ◽

New Information ◽

New Type ◽

Fringing Fields

Imaging energy filters can add new information to electron microscopic images with respect to energy-axis, so-called electron spectroscopic imaging (ESI). Recently, many good results have been reported using this imaging technique. ESI also allows high-contrast observation of unstained biological samples, becoming a trend of the field of morphology. We manufactured a new type of energy filter as a trial production. This energy filter consists of two magnets, and we call γ-filter since the trajectory of electrons shows ‘γ’-shape inside the filter. We evaluated the new energyγ-filter TEM with the γ-filter.Figure 1 shows schematic view of the electron optics of the γ-type energy filter. For the determination of the electron-optics of the γ-type energy filter, we used the TRIO (Third Order Ion Optics) program which has been developed for the design of high resolution mass spectrometers. The TRIO takes the extended fringing fields (EFF) into consideration. EFF makes it difficult to design magnetic energy filters with magnetic sector fields.

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A new type of incubation apparatus for the determination of metabolically produced 14CO2

Analytical Biochemistry ◽

10.1016/0003-2697(66)90139-4 ◽

1966 ◽

Vol 14 (2) ◽

pp. 290-295 ◽

Cited By ~ 25

Author(s):

Marco Baggiolini ◽

Marcel H. Bickel

Keyword(s):

New Type

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Effect of the Reynolds Number and Clearance Flow on the Aerodynamic Characteristics of a New Variable Inlet Guide Vane

Aerospace ◽

10.3390/aerospace8070172 ◽

2021 ◽

Vol 8 (7) ◽

pp. 172

Author(s):

Hengtao Shi

Keyword(s):

Reynolds Number ◽

Guide Vane ◽

Three Dimensional ◽

High Growth ◽

Aerodynamic Characteristics ◽

Inlet Guide Vane ◽

Separation Region ◽

Clearance Flow ◽

New Type ◽

Variable Inlet Guide Vane

Recently, a new type of low-loss variable inlet guide vane (VIGV) was proposed for improving a compressor’s performance under off-design conditions. To provide more information for applications, this work investigated the effect of the Reynolds number and clearance flow on the aerodynamic characteristics of this new type of VIGV. The performance and flow field of two representative airfoils with different chord Reynolds numbers were studied with the widely used commercial software ANSYS CFX after validation was completed. Calculations indicate that, with the decrease in the Reynolds number Rec, the airfoil loss coefficient ω and deviation δ first increase slightly and then entered a high growth rate in a low range of Rec. Afterwards, a detailed boundary-layer analysis was conducted to reveal the flow mechanism for the airfoil performance degradation with a low Reynolds number. For the design point, it is the appearance and extension of the separation region on the rear portion; for the maximum incidence point, it is the increase in the length and height of the separation region on the former portion. The three-dimensional VIGV research confirms the Reynolds number effect on airfoils. Furthermore, the clearance leakage flow forms a strong stream-wise vortex by injection into the mainflow, resulting in a high total-pressure loss and under-turning in the endwall region, which shows the potential benefits of seal treatment.

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Research on Design of Management System for Power Source Equalizing Charge based on FPGA control

International Journal of Online Engineering (iJOE) ◽

10.3991/ijoe.v12i02.5038 ◽

2016 ◽

Vol 12 (02) ◽

pp. 20

Author(s):

Haifeng Lin ◽

Ruili Mao

Keyword(s):

High Power ◽

High Capacity ◽

Power Source ◽

Super Capacitor ◽

Power Requirement ◽

Design Scheme ◽

Charging Mode ◽

New Type ◽

Mixed Power ◽

Peak Value

The accumulator can store the energy in high capacity, and the super capacitor can charge and discharge in high power. The mixed power source composed by the accumulator and super capacitor not only has the characteristics for both of them but also meets the high-power requirement of high capacity and peak value. How to perform the equalizing charging for multiple power packs is a emphasis in the industry currently. On the basis of analysis for multiple equalizing charging methods, a new type of design scheme based on DC/DC and switch matrix is raised in this project, the thinking of intermittent charging mode is adopted and four BCAP0350 is served as the charging sample to perform the charging and discharging experiment as well as verify the composite charging design scheme is provided with the feasibility.

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INFLUENCE OF MARKETING TOOLS ON IMPROVING PRODUCT QUALITY

Vestnik of Kazan state agrarin university ◽

10.12737/2073-0462-2020-1-111-116 ◽

2020 ◽

Vol 15 (1) ◽

pp. 111-116

Author(s):

Margarita Karimova ◽

Nazira Sagitova

Keyword(s):

Quality Management ◽

Product Quality ◽

Building Materials ◽

Marketing Research ◽

Target Audience ◽

New Type ◽

Quality Of Products ◽

Object Of Study ◽

Competitive Product

The high quality of products and services is a guarantee of the company’s success in the market. The purpose of our study is to assess the feasibility of developing a new competitive product, taking into account the preferences of consumers. To achieve this, marketing tools aimed at product quality management were used. In the course of the work, a full cycle of marketing research was conducted, including questionnaires, the formation of a portrait of a consumer of products, and economic calculations. Object of study - a large regional enterprise - a center for sales of building materials. The work performed at the junction of two scientific fields (marketing and quality management) provided a synergistic effect in terms of cost reduction when creating a competitive product, and also allowed us to offer original recommendations for improving quality in general. According to the results of marketing research, which consisted in questioning the target audience using the free “Google Forms” service, such characteristics as “assortment” and “appearance” were recognized as the least satisfying consumers in the existing market for facing bricks. Based on the detailed analysis, a new type of product (“Chocolate velvet” brick) was developed that meets the wishes of the target audience of customers. An additional positive effect from the transition of the enterprise to its production in the amount of 91,600 conventional units per month will be an increase in profit, compared to 2017 (942,500 rubles), by 1,1533240 rubles, the expected efficiency of transferring an innovative product to production (profit growth / costs) will be 1.22. Determination of consumer requirements specifies the technological task during the transition to the production of a new type of product. Replacing the production of old-style finishing bricks with the release of a new type of product allows you to create a customized product that is guaranteed to find its customer due to its high customer loyalty

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DETERMINATION OF THE AERODYNAMIC CHARACTERISTICS FOR AGRICULTURAL UAVS IN UNSTEADY FLOW

Information systems mechanics and control ◽

10.20535/2219-380411201450598 ◽

2015 ◽

Vol 0 (11) ◽

pp. 40-47

Author(s):

Дмитрій Миколайович Зінченко ◽

Олексій В. Седневець

Keyword(s):

Unsteady Flow ◽

Aerodynamic Characteristics

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Numerical Analysis of the Effects of the Geometric and Weight Parameters on the Exterior Ballistics of a Designed Counterprojectile

Problems of Mechatronics Armament Aviation Safety Engineering ◽

10.5604/01.3001.0009.8996 ◽

2017 ◽

Vol 8 (1) ◽

pp. 89-100

Author(s):

Jakub MICHALSKI ◽

Zbigniew SURMA ◽

Marta CZYŻEWSKA

Keyword(s):

Aerodynamic Characteristics ◽

Protection System ◽

Software Environment ◽

Active Protection ◽

Protected Object ◽

Motion Parameters ◽

Exterior Ballistics ◽

Technology Demonstrator ◽

Selection Of

This paper presents a selection of deliverables of a research project intended to develop a technology demonstrator for an active protection system smart counterprojectile. Numerical simulations were completed to analyse the effects of geometry and weight of the counterprojectile warhead on the counterprojectile flight (motion) parameters. This paper investigates four variants of the counterprojectile warhead shape and three variants of the counterprojectile warhead weight. Given the investigated geometric and weight variants, the PRODAS software environment was used to develop geometric models of the counterprojectile warhead, followed by the determination of the model aerodynamic characteristics. The final deliverable of this work are the results of the numerical simulation of the counterprojectile motion along the initial flight path length. Given the required activation of the active protection system in direct proximity of the protected object, the analyses of counterprojectile motion parameters were restricted to a distance of ten-odd metres from the counterprojectile launching system.

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A Novel Amperometric Biosensor Based on Poly(allylamine hydrochloride) for Determination of Ethanol in Beverages

Sensors ◽

10.3390/s21196510 ◽

2021 ◽

Vol 21 (19) ◽

pp. 6510

Author(s):

Oana Maria Istrate ◽

Lucian Rotariu ◽

Camelia Bala

Keyword(s):

Good Accuracy ◽

Sol Gel ◽

Storage Conditions ◽

Applied Potential ◽

Screen Printed Electrode ◽

Response Range ◽

New Type ◽

Allylamine Hydrochloride ◽

Working Parameters

Herein, we report on a new type of ethanol biosensor based on a screen-printed electrode modified with poly(allylamine hydrochloride). The alcohol dehydrogenase was immobilized on the surface of the sensor using the sol–gel matrix. Working parameters such as applied potential, pH, NAD+ concentration, storage conditions were optimized. A response range between 0.05 and 2 mM was found with a sensitivity of 13.45 ± 0.67 µA/mM·cm2 and a detection limit of 20 µM. The developed biosensor was used to detect ethanol in commercial beverages with good accuracy.

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