Development and production of large blast furnaces from 2015 to 2016 in China

2020 ◽  
Vol 117 (1) ◽  
pp. 108 ◽  
Author(s):  
Bing Dai ◽  
Hong-ming Long ◽  
Yong-cai Wen ◽  
Yi-long Ji ◽  
Yun-cai Liu
Keyword(s):  
Raw Materials ◽  
Blast Furnaces ◽  
Security Risk ◽  
Hot Metal ◽  
High Quality ◽  
Large Blast ◽  
Existing Problems ◽  
Cost Cutting ◽  
The Future

This article has reviewed the production status, total reductant consumption, raw materials and operation principle indexes of large blast furnaces in China from 2015 to 2016. The developing actuality of Chinese large BFs has been quantitatively analyzed and the existing problems have been proposed clearly. Based on that, maintaining production stable, enhancing the quality of raw materials and improving the operation principles are suggested. Large BFs take advantages of high-quality hot metal, energy saving, cost-cutting, high mechanization and automation levels and are sufficient to meet the challenges of economic crisis, environmental pressure and security risk form the future. Thus, the number of large BFs in China will continue to increase in the future.

Development and production of Chinese large blast furnaces in 2019 compared with 2015–2016

2020 ◽  
Vol 117 (3) ◽  
pp. 305
Author(s):  
Bing Dai ◽  
Hong-ming Long ◽  
Yi-long Ji ◽  
Dai-wen Liu ◽  
Jia-yong Qiu
Keyword(s):  
Economic Development ◽  
Energy Saving ◽  
Environmental Protection ◽  
Raw Materials ◽  
Blast Furnaces ◽  
Low Carbon ◽  
Large Blast ◽  
Operation Conditions ◽  
The Future

By comparing the production indexes of large blast furnaces (BF) in China between the first half of 2019 and 2015–2016, the production status, reductant consumption, raw materials and operation conditions have been reviewed. In the first half of 2019, Chinese large BFs still had made a lot of achievements, but it is also discovered by comparison that not only the raw materials quality but also the large BFs stability have the trend of getting worse, so some work should be done to stop and recover the unfavorable situation. Based on that, the expectations of enhancing the raw materials quality and improving the operation conditions are suggested. Large BFs make great contributions to energy saving, low-carbon, high automatic, environmental protection and economic development, so there will be more large BFs constructed and put into production in China in the future.

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

scholarly journals Determining the psychometric properties of a novel questionnaire to measure “preparedness for the future” (Prep FQ)

2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Daren K. Heyland ◽  
J. Paige Pope ◽  
Xuran Jiang ◽  
Andrew G. Day
Keyword(s):  
Quality Of Life ◽  
Construct Validity ◽  
Health Behaviors ◽  
Psychometric Properties ◽  
Well Being ◽  
High Quality ◽  
The Future ◽  
Quality Of Death ◽  
Test Retest Reliability

Abstract Background People are living longer than ever before. However, with living longer comes increased problems that negatively impact on quality of life and the quality of death. Tools are needed to help individuals assess whether they are practicing the best attitudes and behaviors that are associated with a future long life, high quality of life, high quality of death and a satisfying post-death legacy. The purpose of paper is to describe the process we used to develop a novel questionnaire (“Preparedness for the Future Questionnaire™ or Prep FQ”) and to define its psychometric properties. Methods Using a multi-step development procedure, items were generated, for the new questionnaire after which the psychometric properties were tested with a heterogeneous sample of 502 Canadians. Using an online polling panel, respondents were asked to complete demographic questions as well as the Prep-FQ, Global Rating of Life Satisfaction, the Keyes Psychological Well-Being scale and the Short-Form 12. Results The final version of the questionnaire contains 34 items in 8 distinct domains (“Medico-legal”, “Social”, “Psychological Well-being”, “Planning”, “Enrichment”, “Positive Health Behaviors”, “Negative Health Behaviors”, and “Late-life Planning”). We observed minimum missing data and good usage of all response options. The average overall Prep FQ score is 51.2 (SD = 13.3). The Cronbach alphas assessing internal reliability for the Prep FQ domains ranged from 0.33 to 0.88. The intra-class correlation coefficient (ICC) used to assess the test–retest reliability had an overall score of 0.87. For the purposes of establishing construct validity, all the pre-specified relationships between Prep FQ and the other questionnaires were met. Conclusion Analyses of this novel measure offered support for its face validity, construct validity, test–retest reliability, and internal consistency. With the development of this useful and valid scale, future research can utilize this measure to engage people in the process of comprehensively assessing and improving their state of preparedness for the future, tracking their progress along the way. Ultimately, this program of research aims to improve the quality and quantity of peoples live by helping them ‘think ahead’ and ‘plan ahead’ on the aspects of their daily life that matter to their future.

Synthesis of Low Viscosity Polydimethylsiloxane Using Low Grade of Octamethylcyclotetrasiloxane

2021 ◽  
Vol 1028 ◽  
pp. 365-370
Author(s):  
Diba G Auliya ◽  
Soni Setiadji ◽  
Zulfi Mofa Agasa ◽  
Fitrilawati ◽  
Norman Syakir ◽  
...  
Keyword(s):  
Ring Opening ◽  
Raw Materials ◽  
Vitreoretinal Surgery ◽  
Production Costs ◽  
Low Grade ◽  
High Grade ◽  
High Quality ◽  
Low Viscosity ◽  
Polymerization Method

Polydimethylsiloxane (PDMS) has been widely used as a vitreous humour substitution in vitreoretinal surgery. Due to its limited availability and increasing domestic needs, the price of PDMS in Indonesia became very expensive. Previously, we reported the synthesized of PDMS from a high grade of monomer of 98% of Octamethylcyclotetrasiloxane (D4) and found that all PDMS samples produced high quality samples similar to that of commercial one. However, by considering the ease of obtaining raw materials and also the production costs, the synthesis of PDMS using monomer which easy to be found in Indonesia and low production costs is needed to be developed. Here, we reported the synthesis of PDMS using low grade of 96% of D4 in order to produce high quality of PDMS with low viscosity that can be used for vitreous humous substitution in vitreoretinal surgery. PDMS samples with low viscosity value of 0.94-1.35 Pa.s have been successfully synthesized from low grade of D4 and MM using ring-opening polymerization method. The yields of PDMS resulted in this research were in the range between 67.27% and 76.26%. From FTIR spectroscopy, it is found that all synthesized samples have structure and functional groups similar to PDMS using high grade of monomer of 98% Octamethylcyclotetrasiloxane (D4). From refractometer and surfgauge measurements, all samples have refractive index in the range of 1,4034-1,4040 and the value surface tension was 21 m.N/m.

scholarly journals Reforestation of ‘Village Forest’ to Improve Sustaiability Creative Industries in Desa Siponjot

2021 ◽  
Vol 5 (2) ◽  
pp. 714-722
Author(s):  
Noverita Sprinse Vinolina ◽  
Antonio Marro Sipayung ◽  
Dardanila ◽  
Sondang Pintauli
Keyword(s):  
Forest Restoration ◽  
Raw Materials ◽  
Economic Value ◽  
Economic Benefits ◽  
Musical Instruments ◽  
Creative Industries ◽  
Raw Material ◽  
High Quality ◽  
The Village

This program is conducted to assist Siponjot Village while empowering the people of Siponjot Village to be able to utilize and maximize the benefit of the village forest. Village forest might support the availability of raw materials required for making musical instruments, such as high quality of wood, including how to process wood waste from making musical instruments to be used as creative souvenirs and improve the economic value. The raw material for production determined its results of the production of wood-based musical instruments. Thus, in order to produce a high quality tanginang, hasapi, and gondang, which previously began to be produced by arts crafts in the Sitangkubang area of ​​Siponjot Village, a high quality of raw materials is needed. The community service team surveyed the location of planting seeds for village forest restoration, provided socialization related to the importance of village forest cultivation and the suitability of the Siponjot Village area for the cultivation of these plants. Village forest restoration aims to maintain the beauty and beauty of the village. Implementation of village reforestation activities starting from socializing forest tourism and the strength of village forests to the community, followed by a discussion about village forest management and its economic benefits. Handover of a thousand units of forest plant seedlings given to the villagers of Siponjot as part of the forest restoration program in the area.

scholarly journals New technological and technical solutions in dietary pear compote production

2020 ◽  
Vol 161 ◽  
pp. 01056
Author(s):  
Magomed Akhmetov ◽  
Amiiat Demirova ◽  
Vladimir Piniaskin ◽  
R.A. Rakhmanova
Keyword(s):  
Water Vapor ◽  
Traditional Method ◽  
Raw Materials ◽  
Hot Water ◽  
Saturated Water Vapor ◽  
High Quality ◽  
Saturated Water ◽  
Preliminary Preparation ◽  
Physical And Chemical

Perfection of technological processes, both in preliminary preparation of raw materials and during the final mandatory step of pasteurization, plays a key role in ensuring the quality of finished products, which is important in the production of canned dietary products. The aim of the research was to develop a more efficient way of blanching raw materials with its hardware and soft pasteurization modes, which will allow the production of high quality and competitive compotes for functional nutrition. We have developed and proposed a method of pulse-steam blanching of raw materials directly in glass jars with saturated water vapor, instead of the traditional method using hot water. The essence of the method is as follows. Fruits stacked in jars are pulse heated for 100–160 seconds (depending on the volume of the container) with saturated water vapor with temperature of 105–110 °C, and then fed into jars with cycles of 10 and 10 seconds respectively. The use of pulsed supply of saturated water vapor contributes to achieving more even heating of the fruit, which are characterized by a relatively large internal thermal resistance, causing overheating of the surface layers, and also provides an increase in the temperature of the product, which allows to pour into the jars syrup at relatively high temperature (97–98 °C), while the traditional technology accounts for the temperature of only 80–85 °C. Implementation of this method ensures the temperature level of the product entering the pasteurization stage being 78–80 °C, as opposed to the traditional method, where the temperature of the product is 45–48 °C. After that, the jars will be filled with syrup with a temperature of 97–98 °C, sealed and sent for pasteurization on accelerated modes. To implement the new method of blanching, the design of the device for pulse-steam blanching of fruits in glass jars has been developed. New thermal sterilization regimes have been developed, taking into account the increased temperature of the product after sealing and improved technology for the production of pear compote. The results of physical and chemical testing confirm the high quality of the finished product.

Effect of the quality of the iron-ore-bearing raw materials and coke on the performance indices of blast furnaces at the Novolipetsk metallurgical combine

Metallurgist ◽  
2010 ◽  
Vol 54 (1-2) ◽  
pp. 3-13 ◽  
Author(s):  
I. F. Kurunov ◽  
V. N. Titov ◽  
V. L. Emel’yanov ◽  
A. M. Loginov ◽  
V. I. Basov ◽  
...  
Keyword(s):  
Iron Ore ◽  
Raw Materials ◽  
Blast Furnaces ◽  
Performance Indices ◽  
Novolipetsk Metallurgical ◽  
Metallurgical Combine

scholarly journals Reconnaissance and latent learning in ants

2007 ◽  
Vol 274 (1617) ◽  
pp. 1505-1509 ◽  
Author(s):  
Nigel R Franks ◽  
James W Hooper ◽  
Anna Dornhaus ◽  
Philippa J Aukett ◽  
Alexander L Hayward ◽  
...  
Keyword(s):  
Latent Learning ◽  
Significant Preference ◽  
High Quality ◽  
Temnothorax Albipennis ◽  
Nest Sites ◽  
Strategic Value ◽  
The Future ◽  
First Time

We show that ants can reconnoitre their surroundings and in effect plan for the future. Temnothorax albipennis colonies use a sophisticated strategy to select a new nest when the need arises. Initially, we presented colonies with a new nest of lower quality than their current one that they could explore for one week without a need to emigrate. We then introduced a second identical low quality new nest and destroyed their old nest so that they had to emigrate. Colonies showed a highly significant preference for the (low quality) novel new nest over the identical but familiar one. In otherwise identical experiments, colonies showed no such discrimination when the choice was between a familiar and an unfamiliar high-quality nest. When, however, either all possible pheromone marks were removed, or landmarks were re-orientated, just before the emigration, the ants chose between identical low-quality new nests at random. These results demonstrate for the first time that ants are capable of assessing and retaining information about the quality of potential new nest sites, probably by using both pheromones and landmark cues, even though this information may only be of strategic value to the colony in the future. They seem capable, therefore, of latent learning and, more explicitly, learning what not to do.

scholarly journals ANTHOCYANINS PROFILES OF SOME AUTOCHTONOUS GRAPEVINE CULTIVARS FOR RED WINES, CULTIVATED AT DRĂGĂȘANI, ROMÂNIA

2020 ◽  
Vol 1 (1) ◽  
pp. 95-102
Author(s):  
Felicia Tutulescu ◽  
Aurel Popa
Keyword(s):  
Raw Materials ◽  
Cabernet Sauvignon ◽  
Red Wines ◽  
High Quality ◽  
White Wines ◽  
Red Pigments ◽  
Grapevine Cultivar ◽  
Visual Attraction ◽  
Anthocyanin Pigments

The Dragasani vineyard is one of the most ancient existing in Romania being famous for obtaining red and white wines of the highest quality. The present study has performed during five years (2005-2009), focusing on the anthocyanin profiles of the autochthonous Novac grapevine cultivar, in comparison with Cabernet Sauvignon cultivar which, also provides wines of high quality. The obtained results put into evidence, a special potential and chromatic structure in case of the grapes and wines characteristics for these autochthonous cultivars, which are very closed to those shown by the Cabernet Sauvignon. For all the cultivars studied, the amounts of cationical flavidium within the anthocyanin matter do keep continuously was growing, while acidity decreased and glucides was accumulated. However, at some moment, these synthesis indices of the cromatical structure’s quality begin to decline. Depending of the viticultural year it is the genetical nature of the respective anthocyanin pigments to differentiate through the involvements of each of the 3 categories of pigments (yellow, red or blue). During the wine’s evolution (maturation and aging), due to the modification of its cromatical structure, the ratio between the yellow and red pigments does confer to the wine a colour nuance which continues to increase, significantly improving the wine’s visual attraction. For the autochthonous grapevine cultivars for red wines, their antocyanins potential their respective qualities do enable us to state that on the basis of the quality of the raw materials, wine types of high qualities could be created, being so endowed that they could bear as well an origin denomination.

scholarly journals THE QUALITY ANALYSIS OF CHOCOLATE CONFECTIONERY PRODUCTS IN RESTAURANT BUSINESS

2018 ◽  
Vol 64 ◽  
Author(s):  
N.V. Bespalova ◽  
M.M. Gomola ◽  
T.I. Yakovleva
Keyword(s):  
Quality Control ◽  
Raw Materials ◽  
Quality Analysis ◽  
High Quality ◽  
Confectionery Products ◽  
Practical Recommendations ◽  
Selection Of

The article is devoted to the urgent theoretical and practical problems of the quality control of the chocolate confectionery products in cafes and restaurants. The authors analyze the modern approaches to the quality control of the chocolate confectionery products. The practical recommendations can be useful for the process of selection of the high quality raw materials. The criteria for the quality control of the chocolate confectionery products have been given. Some ways to improve the quality of he chocolate confectionery products have been discussed.

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