• Title/Summary/Keyword: process intensification

Search Result 52, Processing Time 0.023 seconds

Directions of the Activation of the Development of a Small Innovative Enterprise

  • Antypenko, Nadiia;Dongcheng, Wang;Lysenko, Zhanna;Krasnonosova, Olena;Grynevych, Liudmyla
    • International Journal of Computer Science & Network Security
    • /
    • v.21 no.12spc
    • /
    • pp.495-502
    • /
    • 2021
  • The study is devoted to substantiation of directions of intensification of development of small innovative enterprise, which has a significant impact on the overall innovation activity of the country and promotes innovative development, transition to more advanced technological systems. The outlined role of small business in innovative development in the direction of intensifying innovation in the economy, improving organization and production, as well as in the form of direct participation in the innovation process, production of science-intensive products, stimulating demand for innovation. A group of factors hindering the development of small innovative entrepreneurship was identified, including: financial aspects of the activity, shortcomings of organizational and communicative nature, underdeveloped technology market, information plan problems, internal production problems of small business, market problems. The directions of intensification of the development of small innovative entrepreneurship are substantiated, namely: financial and credit support of small innovative entrepreneurship; introduction of tax incentives; material and technical support; nationwide intensification of innovation activity; information support; development of innovation infrastructure. The involvement of the outlined directions of intensification of small innovative entrepreneurship will help to obtain a synergistic effect of innovative development of both small innovative business structures and the economy as a whole.

Membrane engineering progresses in desalination and water reuse

  • Macedonio, Francesca;Drioli, Enrico
    • Membrane and Water Treatment
    • /
    • v.1 no.1
    • /
    • pp.75-81
    • /
    • 2010
  • The aim of this work is to analyse and discuss the use of the Economic Evaluation and of some new "metrics" for an appropriate valuation of membrane operations in the logic of Process Intensification. In particular, the proposed approach has the goal to show how the utilized indicators can drive to the choice of the most convenient process. Although in this work the planned procedure is applied, as a case study, to the membrane-based systems for boron and arsenic removal from waters, the suggested approach can be generally applied to any other process of interest.

Intensification and Spatial Concentration of Protected Horticulture through the Industrialization of Agriculture: Focused on Cultivation under Structure of Oriental Melons (농업의 산업화 과정에서 나타나는 시설원예농업의 집약화와 공간적 집중화: 참외농업 시설재배를 중심으로)

  • Jang, Youngjin
    • Journal of the Economic Geographical Society of Korea
    • /
    • v.21 no.4
    • /
    • pp.273-288
    • /
    • 2018
  • The protected horticulture sector was evaluated as achieving the highest level of agricultural industrialization, this study examined the structural changes in the field of Korea oriental melon farming, where cultivation under structure has advanced through its long history, with the focus on intensification and concentration of agriculture. From the 1970's, the oriental melon farming labor were replaced by capital due to the increase of dependence on input industries and the decrease in labor input, thus intensification improved the productivity. Through the development, Seongju-gun of Gyeongsangbuk-do, experienced faster growth of cultivation compared to other regions, and gained a competitive edge in productivity which led to the spatial concentration as well as the concentration of farms. In this restructuring process of oriental melon farming, spatial inequality intensified throughout the agricultural development as the existing farming spaces underwent a dynamic shift.

From Deep Bed Filter to Membrane Filtration: Process Intensification, Cost and Energy Considerations (입자분리를 위한 여과방식에 따른 비용-효율 분석)

  • BEN AIM, Roger;Kwon, Dae-young
    • Journal of Korean Society of Water and Wastewater
    • /
    • v.19 no.2
    • /
    • pp.144-148
    • /
    • 2005
  • The industrial development of large scale deep bed filters has been a very important step in the process of drinking water production and more recently in the tertiary treatment of wastewater. The target of deep bed filtration is the retention is the retention of small particles generally smaller than 30 microns at relatively small concentration, generally less than 30 mg/l from natural water (surface water or aquifers) or secondary treated wastewater. The relation between the retention efficiency and the characteristics of the particles has been extensively studied experimentally and through different models of retention. During the last years the development of new technologies (fiber filter, membrane modules) lead to more intensive processes compared to conventional sand filtration. Fiber filters can combine intensification with a decrease in specific energy needed however they cannot be operated under gravity like sand filters. Membrane filters (UF or MF) are much more intensive and efficient than sand filters. The specific energy needed is not so high (about $0.1Kwh/M^3$) but is higher than sand or fiber filter. A Life Cycle Analysis (LCA) has to be made for a complete comparison between these technologies taking in account that the efficiency of particle retention obtained by membrane filters is unique.

A Study on Gas-Liquid Reaction Intensification by Using Rotating Flow (회전유동을 이용한 기체-액체 반응 촉진 기술 연구)

  • Jun Sang Park
    • Journal of the Korean Society of Visualization
    • /
    • v.21 no.2
    • /
    • pp.45-54
    • /
    • 2023
  • In the present study, we propose new type of a spinning disk reactor(SDR) with high performance and very convenient structure to make a large scale equipment from lab-scale than the conventional one. A split-disk experimental equipment, based on new type of spinning disk reactor, has been developed to generate an energy to break a bulk of injected gas into smaller gas bubble. Several cases of an experimental observation make it to confirm that a bulk of injecting gas could be continuously break into smaller bubbles. It shows the feasibility to make a scale-up of SDR by using the characteristic of Taylor-Proudman column in rotating flow. A theoretical study on single phase liquid flow is given to predict a liquid induced shear stress, which make the present study to be self-containment.

Membrane engineering for environmental protection and sustainable industrial growth: Options for water and gas treatment

  • Brunetti, Adele;Macedonio, Francesca;Barbieri, Giuseppe;Drioli, Enrico
    • Environmental Engineering Research
    • /
    • v.20 no.4
    • /
    • pp.307-328
    • /
    • 2015
  • The increasing demand for materials, energy and products drives chemical engineers to propose new solutions everyday able to promote development while supporting sustainable industrial growth. Membrane engineering can offer significant assets to this development. Here, they are identified the most interesting aspects of membrane engineering in strategic industrial sectors such as water treatment, energy production and depletion and reuse of raw materials. The opportunity to integrate membrane units with innovative systems to exploit the potential advantages derived from their synergic uses is also emphasized. The analysis of the potentialities of these new technologies is supported by the introduction of process intensification metrics which provide an alternative and innovative point of view regarding the unit performance, highlighting important aspects characterizing the technology and not identified by the conventional analysis of the unit performance.

A Study on Direct Injection Stratified Charge Combustion with Spark Ignition in Constant Volume Bomb (정적 용기내의 직접분사식 스파크 점화 성층 연소에 관한 연구)

  • Hong, M.S.;Kim, K.S.
    • Transactions of the Korean Society of Automotive Engineers
    • /
    • v.2 no.5
    • /
    • pp.30-40
    • /
    • 1994
  • The direct-injection stratified-charge engine has the advantages of higher thermal efficiency and less CO and $NO_x$ emission levels than conventional spark ignition engines. However, its actual utilization is prevented by high unburned hydrocarbon emission levels during light-load operations. In this paper, fundamental studies were carried out using a pancake type constant volume bomb. The effects of intensification of local premixing by tangential and radial fuel injection were examined experimentally. Unburned hydrocarbon emission levels with radial fuel injection were shown to be lower than those of tangential fuel injection cases. The stratification and mixing process of fuel jet and combustion process were observed by schlieren photography.

  • PDF

A Study on the Optimal Design in the Indirect Aerated Fluidized Bed (간접 포기식 유동상의 이상적 설계에 관한 연구)

  • 안송엽;김환홍;권희태
    • Journal of Environmental Science International
    • /
    • v.8 no.1
    • /
    • pp.95-100
    • /
    • 1999
  • Process intensification without any increase in bed requires the exploitation of fluid mechanical phenomena as the basis for elegant solutions to the process engineering problems which result from the need to retain and control the immobilized biomass, and for biomass recovery. The fluidized bed biological reactor provides a solution to these needs. The wastewater treatment characteristics of the fluidized bed was filled with sand media. Indirect aeration were studied experimentally. The researcher was filled with sand particle size(0.60~0.42mm) in three reactors with different section area(A)/height(H), in the state BOD loading 4.5kg-$BOD_5/m^3$ㆍd, and under the fixed state of hydraulic retention time for around 32 minutes.

  • PDF

A Study on The Training Curriculum for The Emergency Medical Technician (응급구조사(應急救助士) 교육과정(敎育課程)에 관(關)한 연구(硏究))

  • Sohn, Shin-Young
    • The Journal of Korean Academic Society of Nursing Education
    • /
    • v.2
    • /
    • pp.32-55
    • /
    • 1996
  • It was enacted 'Emergency Medical Act' in January, 1994 beginning the emergency medical service system from 1982, and while it was established the emergency medical department in junior college providing the detailed agenda about emergency medical technician and the regulation relative to the application of a law on the emergency medical act in 1995, the fire school and the National Medical Center are enforced the curriculum. It is very important subject faced for the construction of emergency medical system to produce a number of emergency medical technicians to be sufficient to the role of emergency aid. In this study it is analysed the training curriculum for the emergency medical technician and presented the improvement plans. 1. Though it needs the qualification level of first and second class in the selection process, the more important thing needs the detailed qualification level by term of one's service and the skills of business accomplishment. 2. In the examination management, (1) written examination is composed of the questions to understand how much faithfully they carry out the practical business as the emergency medical technicians, (2) it is added practical examination as the item to appraise the situation disposal ability. 3. It is necessary to prescribe the activity in the medical institution and ambulance arrangement through the development of 'Business Treatment Guide'. 4. For the regional balanced disposition of emergency medical personnel it is selected balanceably the educational institution by eight medical service areas, and considering the characteristics of region it is necessary to manage, in the practical business training course, another special course such as the mountains medical aid and sea medical aid. 5. In the period of education the first class needs the practical business training period of a certain period after passing examination, and the second class needs the extension of the period. 6. As the problems to improve in the curriculum [1] in the first class course (1) intensification of practical educaiton (2) reinforcement of curriculum (3) the development of standardized curriculum etc., [2] in the second class course (1) varieties of curriculum (2) intensification of basic first aid treatment education.

  • PDF

Photocatalytic and Sonophotocatalytic degradation of alachlor using different photocatalyst

  • Bagal, Manisha V.;Gogate, Parag R.
    • Advances in environmental research
    • /
    • v.2 no.4
    • /
    • pp.261-277
    • /
    • 2013
  • The degradation of alachlor has been investigated using sonolysis (US), photocatalysis (UV) and sonophotocatalysis (US/UV) using three photocatalyst viz. $TiO_2$ (mixture of anatase and rutile), $TiO_2$ (anatase) and ZnO. The effect of photocatalyst loading on the extent of degradation of alachlor has been investigated by varying $TiO_2$ (both types) loading over the range of 0.01 g/L to 0.1 g/L and ZnO loading over the range of 0.05 g/L to 0.3 g/L. The optimum loading of the catalyst was found to be dependent on the type of operation i.e., photocatalysis alone or the combined operation of sonolysis and photocatalysis. All the combined processes gave complete degradation of alachlor with maximum rate of degradation being obtained in the case of sonophotocatalytic process also showing synergistic effect at optimized loading of photocatalyst. About 50% to 60% reduction in TOC has been obtained using the combined process of sonophotocatalysis depending on the operating conditions. The alachlor degradation fitted first order kinetics for all the processes under investigation. It has been observed that the $TiO_2$ (mixtrure of anatase and rutile) is the most active photocatalyst among the three photocatalysts studied in the current work. The effect of addition of radical enhancers and scavengers on sonophotocatalytic degradation of alachlor has been investigated in order to decipher the controlling mechanism. The alachlor degradation products have been identified using LC-MS method.