Wyniki wyszukiwania - Biblioteka Nauki

1

A Tiny Fabry–Perot Interferometer with Postpositional Filter for Measurement of the Thermospheric Wind

100%

Wang H. , Wang Y. , Fu J.

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tom Vol. 64, no. 6

2748--2760

EN

A tiny and low-cost ground-based Fabry–Perot interferometer (FPI) was designed using a filter behind etalon and Galilean telescope system for the thermospheric wind observation with OI 630.0 nm nightglow emissions (~250 km). Based on the instrument, experiments were carried out at Langfang (39.40° N, 116.65° E) site for a rough comparison and Kelan (38.71° N, 111.58° E) site for a detailed validation. Wind results of Langfang experiment are well consistent with measurements of two other FPIs deployed at Xinglong (40.40° N, 117.59° E) and Kelan which are retrieved by the American National Center for Atmospheric Research (A-NCAR). In Kelan experiment, the averaged wind deviation between our FPI and A-NCAR FPI is 11.8 m/s. The averaged deviation of wind measurement error between them is 2.9 m/s. The comparisons suggest good agreement. Then, the analysis of influencing factors was made. The center determination offset has an exponential relation with wind deviation, while the radius calculation offset is linear with wind deviation.

2

Treatment of technological water for the aerospace industry – operating problems

70%

Papciak D. , Zamorska J. , Zdeb M.

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tom z. 62, nr 3/I

329--336

EN

The paper presents the water treatment technology for FPI line (Fluorescent Penetrant Inspection) which is used to conduct diagnostic tests in the field of structural cracks, erosion, corrosion, defects of the material, welds cohesion. The problem that occurred during operation of the FPI line was an increase of turbidity and milky colour of water (i.e. white water) in bathtub of the last rinse which caused the formation of deposits on washed parts and hampered diagnostic process. On the basis of the physicochemical and bacteriological analysis the assessment of changes in water quality during the cleaning process was carried out. The problem of the formation of the so-called "white water" was described and solved. An analysis of necessity of water treatment station modernization as well as the legitimacy of the use of the disinfection process were made. The following parameters of water were analysed: pH, turbidity, conductivity, hardness, dissolved oxygen, total organic carbon, permanganate index, SiO2 content, heavy metals contents, and the total number of mesophilic and psychrophilic bacteria. The results of the analyses indicate that the cause of the growth of technological water turbidity on the FPI, is formation of polysilicon acid. Polymerized forms of silicates exist in colloidal form, therefore, the observed phenomenon is the emergence of so-called "white water" and the formation of deposits.

PL

W artykule przedstawiono technologię uzdatniania wody dla potrzeb linii FPI (fluorescencji i czyszczenia chemicznego) do prowadzenia badań diagnostycznych elementów konstrukcyjnych w zakresie pęknięć, erozji, korozji, ubytków materiału, spójności spawów. W omawianym przykładzie linia fluorescencji i czyszczenia chemicznego składa się ze stacji demineralizacji wody oraz z wanien, których odbywa się proces płukania produkowanych elementów. Problemem, który pojawił się podczas eksploatacji linii FPI był wzrost mętności i mlecznej barwy wody (tzw. białej wody) w wannie z ostatniego płukania co powodowało powstawanie osadów na płukanych elementach i utrudniało proces diagnostyczny. Na podstawie analiz fizyko-chemicznych i bakteriologicznych dokonano oceny zmian jakości wody podczas procesu czyszczenia. Opisano i rozwiązano problem związany z powstawaniem tzw. „białej wody”. Dokonano analizy konieczności modernizacji stacji uzdatniania oraz zasadności zastosowania procesu dezynfekcji. Analizowano następujące parametry wody: pH, mętność, przewodnictwo, twardość, tlen rozpuszczony, ogólny węgiel organiczny, indeks nadmanganianowy, zawartość SiO2, metali ciężkich oraz ogólną liczbę bakterii mezofilnych i psychrofilnych.

3

The mechanism and path of finance promoting the development of low carbon economy

57%

Li J.

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tom Vol. 30, nr 2

227--234

EN

Promoting the development of low-carbon economy (LCEco) to protect the environment is an important dimension to enhance national competitiveness and an effective path to achieve high-quality national development. Therefore, based on the endogenous LCEco growth theory, from the two dimensions of financial technology innovation (FTI) and financial product innovation (FPI), using the spatial measurement method of SLM and SEM, using the panel data of 30 provinces (municipalities and autonomous regions) from 2009 to 2021, this paper deeply explores the impact of FTI and FPI on the development of LCEco. The results show that: FTI and FPI have synergistic effect and positive spatial spillover effect on the LCEco, whose elastic coefficients for them are respectively (–0.125, p < 0.05; –0.084, p < 0.05). Different regions have obvious heterogeneous effects on the FTI, FPI and LCEco, whose elastic coefficients for them are (0.318, p < 0.05; 0.332, p < 0.05). The conclusion not only provides empirical support for the endogenous LCEco growth theory, but also provides effective evidence for the high-quality development path of China’s LCEco.