Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Liu, Lei" wg kryterium: Autor

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 23
Tytuł:
A lightweight multi-person pose estimation scheme based on Jetson Nano
Autorzy:
Liu, Lei
Blancaflor, Eric B.
Abisado, Mideth
Powiązania:
https://bibliotekanauki.pl/articles/30148243.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
human pose estimation
lightweight model
Edge AI
deep learning
computer vision
Opis:
As the basic technology of human action recognition, pose estimation is attracting more and more researchers' attention, while edge application scenarios pose a higher challenge. This paper proposes a lightweight multi-person pose estimation scheme to meet the needs of real-time human action recognition on the edge end. This scheme uses AlphaPose to extract human skeleton nodes, and adds ResNet and Dense Upsampling Revolution to improve its accuracy. Meanwhile, we use YOLO to enhance AlphaPose’s support for multi-person pose estimation, and optimize the proposed model with TensorRT. In addition, this paper sets Jetson Nano as the Edge AI deployment device of the proposed model and successfully realizes the model migration to the edge end. The experimental results show that the speed of the optimized object detection model can reach 20 FPS, and the optimized multi-person pose estimation model can reach 10 FPS. With the image resolution of 320×240, the model’s accuracy is 73.2%, which can meet the real-time requirements. In short, our scheme can provide a basis for lightweight multi-person action recognition scheme on the edge end.
Źródło:
Applied Computer Science; 2023, 19, 1; 1-14
1895-3735
2353-6977
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comminution behavior and mineral liberation characteristics of low-grade hematite ore in high pressure grinding roll
Autorzy:
Cao, Jincheng
Liu, Lei
Han, Yuexin
Feng, Ansheng
Powiązania:
https://bibliotekanauki.pl/articles/110727.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
low-grade hematite ore
high pressure grinding roll
comminution behavior
degree of liberation
Opis:
The comminution process and mechanism of low-grade hematite ore in a high pressure grinding roll (HPGR) were investigated in this work. Three different methods were used for comminution of the hematite ore: HPGR with an air classifier, HPGR with screening followed by ball milling (HPGR+BM), and cone crushing with screening followed by ball milling (CC+BM). In addition, the effects of comminution methods on the degree of liberation of minerals in the grinding products were compared. The results suggest that the comminution process of the ore can be divided into four stages: appearance of tiny cracks, expansion of tiny cracks, which eventually form microcosmic cracks, development of principle cracks, and generation of the conjugate fracturing zone. Intergranular cracks, including partial intergranular cracks and complete intergranular cracks, are apparent in the comminution products of the HPGR. The complete intergranular cracks mainly occur in the conjugate fracturing zone, while the partial intergranular cracks within the particles result in an abundance of locked-particles in the comminution products. Furthermore, the degree of liberation of minerals is more influenced by the final grinding mode rather than the crushing method. It is found that complete intergranular cracks in the conjugate fracturing zone play a significant role in increasing the degree of liberation of iron minerals in the fine size fraction. The “mosaic-type” locked-particles have negligible effect on the liberation properties of iron minerals during the subsequent grinding process.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 2; 575-585
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biosorption of Pb(II) by the resistant Enterobacter sp. : Investigated by kinetics, equilibrium and thermodynamics
Autorzy:
Liu, Lei
Xia, Mengya
Hao, Jianwen
Xu, Haoxi
Song, Wencheng
Powiązania:
https://bibliotekanauki.pl/articles/2073764.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pb(II)
biosorption
enterobacter sp.
kinetics
thermodynamics
Opis:
The Pb(II)-resistant bacterium was isolated from heavy metal-contained soils and used as a biosorbent to remove Pb(II). The strain was identified as Enterobacter sp. based on the 16S rRNA sequence analysis. The effect of biosorption properties (pH value, Pb(II) concentration, bacterial concentration and temperature) on Pb(II) was investigated by batch experiments. Results of FTIR and XPS showed that the biosorption process mainly involved some oxygen-containing groups (-OH and -COOH groups). The experimental results and equilibrium data were fitted by pseudo-second-order kinetic model and Langmuir model, respectively. The experimental biosorption isotherms fitted the Langmuir model, and the maximum biosorption capacity was 40.75 mg/g at 298 K. The calculated ΔGо and ΔHо were –4.06 and 14.91(kJ/mol), respectively, which indicated that biosorption process was spontaneous and endothermic. Results show that Enterobacter sp. will be an efficient biosorbent for Pb(II) removal.
Źródło:
Archives of Environmental Protection; 2021, 47, 3; 28--36
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High Heat Flux Testing of Doped and Coated Graphite Using High-Intensity Pulsed Ion Beam
Autorzy:
Zhu, X.
Liu, C.
Lei, M.
Powiązania:
https://bibliotekanauki.pl/articles/1807981.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
28.52.Fa
52.59.Mv
81.05.Uw
Opis:
A high-intensity pulsed ion beam (HIPIB) technique is applied to heat flux testing of plasma facing materials for fusion experiment. The HIPIB is generated at a relatively stable power density up to $10^{8}$ W/$cm^{2}$, which covers a heat flux parameter of up to several hundreds MW $m^{-2} s^{1//2}$. Surface morphology and weight loss are examined for doped and coated graphite with HIPIB exposure of 280 MW $m^{-2} s^{1//2}$, being of the same order of thermal loads during off-normal events in future fusion reactors. The work demonstrates a first example utilizing the HIPIB technique to study thermal response of plasma facing materials under fusion relevant thermal loads.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 1177-1179
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deflectometry for phase retrieval using a composite fringe
Autorzy:
Liu, T.
Zhou, C.
Liu, Y
Si, S
Lei, Z.
Powiązania:
https://bibliotekanauki.pl/articles/173892.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
wavefront measurement
fringe analysis
phase retrieval
fast Fourier transform (FFT)
multifrequency heterodyne principle
Opis:
An improved deflectometry for wavefront measurement using a composite fringe is proposed to reduce the projection fringes and improve the accuracy. The single composite fringe contains four fringes in different directions. It goes through the tested objects and then is captured by a CCD camera. Two high frequency orthogonal fringe patterns and two single period orthogonal fringe patterns can be obtained from the composite fringe by fast Fourier transform. The unwrapping of the wrapped phase of the high frequency fringe is accomplished by the corresponding single period fringe using a heterodyne method. The wavefront is reconstructed by the integration of partial derivatives. Using only one fringe, the proposed method is more applicable to dynamic wavefront measurement. The experimental results demonstrate that the proposed method can retrieve the complex wavefronts more accurately.
Źródło:
Optica Applicata; 2014, 44, 3; 451-461
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conformational Ensemble of B Chain in $T_{6}$ Human Insulin Based on the Landau Free Energy
Autorzy:
Lei, Yanlin
He, Jianfeng
Liu, Jiaojiao
Li, Jing
Powiązania:
https://bibliotekanauki.pl/articles/1398189.pdf
Data publikacji:
2018-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
insulin
structural flexibility
free energy
conformational ensemble
Opis:
Insulin is an important peptide hormone for the glucose metabolism. The structural flexibility of insulin B chain attracts a lot of our attention for understanding the biological activity. Our work carried out the extensive sampling to statistically clarify the structural changes of isolated $T_{6}$ human insulin B chain. We introduced the Landau free energy to describe the isolated insulin B chain whose experimental structure locates a local energy minimum. Its trained model was subjected to thousands of heating and cooling circles between the high and low temperatures. Six typical structure clusters were found by classifying the final generated structures with RMSD and radius of gyration. The structures in clusters indicate the potential deformations of insulin B chain at residues 5-8 of N-terminus, residues 9-12 of central helix and residues 24-29 of C-terminus, which agrees with the experimental results.
Źródło:
Acta Physica Polonica A; 2018, 133, 5; 1261-1265
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of kaolinite crystallinity and calcination conditions on the pozzolanic activity of metakaolin
Wpływ krystaliczności kaolinitu i warunków kalcynacji na aktywność pucolanową metakaolinu
Autorzy:
Liu, Yuanyuan
Huang, Qian
Zhao, Liang
Lei, Shaomin
Powiązania:
https://bibliotekanauki.pl/articles/1849615.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
kaolinite crystallinity
calcination conditions
pozzolanic activity
krystaliczność kaolinitu
warunki kalcynacji
aktywność pucolanowa
Opis:
Two kaolin ores with the almost same fineness and purity of original kaolinite but possessing different kaolinite crystallinity (Hinckley Index) were selected to study the influence of crystallinity and calcination conditions on the pozzolanic activity of metakaolin after dehydroxylation. The different calcination conditions were conducted by altering the calcination temperature and holding time to obtain different metakaolin samples with different degrees of dehydroxylation. Then pozzolanic activities of metakaolin samples were tested by the modified Chapelle test, Frattini test and strength evaluations. Additionally, the apparent activation energies of two kaolin ores were calculated to study the thermal properties of kaolinite by isoconversional methods followed by iterative computations. The results showed that pozzolanic activities were dependent on the degree of dehydroxylation, except for the metakaolins calcined at 900°C due to the fact that recrystallization and high pozzolanic activity was conducted by complete dehydroxylation (degree of dehydroxylation ≥ 90%). Moreover, the lower crystallinity of original kaolinite favored the removal of the structural hydroxyls, leading to a reduction of apparent activation energy and increase of pozzolanic activity, indicating that the higher calcination temperature or longer holding time was required during calcination to reach the same degree of dehydroxylation and finally highly ordered kaolinite converted into the less active metakaolinite, which was confirmed by the lower Ca(OH)2 consumption in the modified Chapelle test, higher [CaO] and [OH] in the Frattini test and weaker compressive strength.
Do zbadania wpływu krystaliczności i warunków kalcynacji na aktywność pucolanową metakaolinu po dehydroksylacji wybrano dwie rudy kaolinitu o prawie takiej samej jakości i czystości jak oryginalny kaolinit, ale o różnej krystaliczności kaolinitu (indeks Hinckleya). Przeprowadzono różne warunki kalcynacji, zmieniając temperaturę kalcynacji i czas przetrzymywania w celu uzyskania różnych próbek metakaolinu o różnych stopniach dehydroksylacji. Następnie zbadano aktywność pucolanową próbek metakaolinu za pomocą zmodyfikowanego testu Chapelle’a, testu Frattiniego i oceny wytrzymałości. Ponadto obliczono pozorne energie aktywacji dwóch rud kaolinu w celu zbadania właściwości termicznych kaolinitu metodami izokonwersji, a następnie obliczeń iteracyjnych. Wyniki pokazały, że aktywność pucolanowa była zależna od stopnia dehydroksylacji, z wyjątkiem metakaolinów kalcynowanych w temperaturze 900°C z powodu rekrystalizacji, a wysoką aktywność pucolanową przeprowadzono przez całkowitą dehydroksylację (stopień dehydroksylacji ≥ 90%). Ponadto niższa krystaliczność oryginalnego kaolinitu sprzyjała usuwaniu strukturalnych grup hydroksylowych, prowadząc do zmniejszenia pozornej energii aktywacji i wzrostu aktywności pucolanowej, co wskazuje, że wyższa temperatura kalcynacji lub dłuższy czas przebywania były wymagane podczas kalcynacji, aby osiągnąć ten sam stopień dehydroksylacji i wreszcie wysoce uporządkowany kaolinit przekształcony w mniej aktywny metakaolinit, co zostało potwierdzone przez mniejsze zużycie Ca(OH)2 w zmodyfikowanym teście Chapelle’a, wyższe [CaO] i [OH] w teście Frattiniego oraz słabszą wytrzymałość na ściskanie.
Źródło:
Gospodarka Surowcami Mineralnymi; 2021, 37, 1; 39-56
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of kaolinite crystallinity and calcination conditions on the pozzolanic activity of metakaolin
Wpływ krystaliczności kaolinitu i warunków kalcynacji na aktywność pucolanową metakaolinu
Autorzy:
Liu, Yuanyuan
Huang, Qian
Zhao, Liang
Lei, Shaomin
Powiązania:
https://bibliotekanauki.pl/articles/1849627.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
kaolinite crystallinity
calcination conditions
pozzolanic activity
krystaliczność kaolinitu
warunki kalcynacji
aktywność pucolanowa
Opis:
Two kaolin ores with the almost same fineness and purity of original kaolinite but possessing different kaolinite crystallinity (Hinckley Index) were selected to study the influence of crystallinity and calcination conditions on the pozzolanic activity of metakaolin after dehydroxylation. The different calcination conditions were conducted by altering the calcination temperature and holding time to obtain different metakaolin samples with different degrees of dehydroxylation. Then pozzolanic activities of metakaolin samples were tested by the modified Chapelle test, Frattini test and strength evaluations. Additionally, the apparent activation energies of two kaolin ores were calculated to study the thermal properties of kaolinite by isoconversional methods followed by iterative computations. The results showed that pozzolanic activities were dependent on the degree of dehydroxylation, except for the metakaolins calcined at 900°C due to the fact that recrystallization and high pozzolanic activity was conducted by complete dehydroxylation (degree of dehydroxylation ≥ 90%). Moreover, the lower crystallinity of original kaolinite favored the removal of the structural hydroxyls, leading to a reduction of apparent activation energy and increase of pozzolanic activity, indicating that the higher calcination temperature or longer holding time was required during calcination to reach the same degree of dehydroxylation and finally highly ordered kaolinite converted into the less active metakaolinite, which was confirmed by the lower Ca(OH)2 consumption in the modified Chapelle test, higher [CaO] and [OH] in the Frattini test and weaker compressive strength.
Do zbadania wpływu krystaliczności i warunków kalcynacji na aktywność pucolanową metakaolinu po dehydroksylacji wybrano dwie rudy kaolinitu o prawie takiej samej jakości i czystości jak oryginalny kaolinit, ale o różnej krystaliczności kaolinitu (indeks Hinckleya). Przeprowadzono różne warunki kalcynacji, zmieniając temperaturę kalcynacji i czas przetrzymywania w celu uzyskania różnych próbek metakaolinu o różnych stopniach dehydroksylacji. Następnie zbadano aktywność pucolanową próbek metakaolinu za pomocą zmodyfikowanego testu Chapelle’a, testu Frattiniego i oceny wytrzymałości. Ponadto obliczono pozorne energie aktywacji dwóch rud kaolinu w celu zbadania właściwości termicznych kaolinitu metodami izokonwersji, a następnie obliczeń iteracyjnych. Wyniki pokazały, że aktywność pucolanowa była zależna od stopnia dehydroksylacji, z wyjątkiem metakaolinów kalcynowanych w temperaturze 900°C z powodu rekrystalizacji, a wysoką aktywność pucolanową przeprowadzono przez całkowitą dehydroksylację (stopień dehydroksylacji ≥ 90%). Ponadto niższa krystaliczność oryginalnego kaolinitu sprzyjała usuwaniu strukturalnych grup hydroksylowych, prowadząc do zmniejszenia pozornej energii aktywacji i wzrostu aktywności pucolanowej, co wskazuje, że wyższa temperatura kalcynacji lub dłuższy czas przebywania były wymagane podczas kalcynacji, aby osiągnąć ten sam stopień dehydroksylacji i wreszcie wysoce uporządkowany kaolinit przekształcony w mniej aktywny metakaolinit, co zostało potwierdzone przez mniejsze zużycie Ca(OH)2 w zmodyfikowanym teście Chapelle’a, wyższe [CaO] i [OH] w teście Frattiniego oraz słabszą wytrzymałość na ściskanie.
Źródło:
Gospodarka Surowcami Mineralnymi; 2021, 37, 1; 39-56
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jitter generation model based on timing modulation and cross point calibration for jitter decomposition
Autorzy:
Ren, Nan
Fu, Zaiming
Lei, Shengcu
Liu, Hanglin
Tian, Shulin
Powiązania:
https://bibliotekanauki.pl/articles/1848967.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
jitter decomposition
jitter generation
cross-point calibration
timing modulation
deterministic jitter
random jitter
Opis:
High-speed serial standards are rapidly developing, and with a requirement for effective compliance and characterization measurement methods. Jitter decomposition consists in troubleshooting steps based on jitter components from decomposition results. In order to verify algorithms with different deterministic jitter (DJ) in actual circuits, jitter generation model by cross-point calibration and timing modulation for jitter decomposition is presented in this paper. The generated jitter is pre-processed by cross-point calibration which improves the accuracy of jitter generation. Precisely controllable DJ and random jitter (RJ) are generated by timing modulation such as data-dependent jitter (DDJ), duty cycle distortion (DCD), bounded uncorrelated jitter (BUJ), and period jitter (PJ). The benefit of the cross-point calibration was verified by comparing generation of controllable jitter with and without cross-point calibration. The accuracy and advantage of the proposed method were demonstrated by comparing with the method of jitter generation by analog modulation. Then, the validity of the proposed method was demonstrated by hardware experiments where the jitter frequency had an accuracy of ±20 ppm, the jitter amplitude ranged from 10 ps to 8.33 ns, a step of 2 ps or 10 ps, and jitter amplitude was independent of jitter frequency and data rate.
Źródło:
Metrology and Measurement Systems; 2021, 28, 1; 123-143
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A dynamic angle metrology system based on fibre-optic gyroscope and rotary table
Autorzy:
Chen, Lei
Zhou, Yilan
Zhang, Dengwei
Shu, Xiaowu
Liu, Cheng
Powiązania:
https://bibliotekanauki.pl/articles/220999.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
circular grating angle encoder
fibre-optic gyroscope
dynamic angle metrology
Opis:
Dynamic angle measurement (DAM) plays an important role in precision machining, aerospace, military and artificial intelligence. Because of its advantages including high sensitivity, solid state and miniaturization, fibre-optic gyroscope (FOG) has great application prospects in the field of DAM. In this paper, we propose a dynamic angle metrology method based on FOG and a rotary table to evaluate the DAM accuracy with FOG. The system synchronously collects data from the FOG and rotary table, and analyses the DAM accuracy of the FOG for different sway conditions compared with that of the angle obtained from the rotary table. An angle encoder in the rotary table provides absolute or incremental angular displacement output with angular displacement measurement accuracy of 10′′ (0:0028°) and angular displacement repeat positioning accuracy of 3′′ (0:00083°), and can be used as an angle reference. The experimental results show that the DAM accuracy of the FOG is better than 0:0028° obtained with the angular encoder, and the absolute DAM accuracy of the FOG is better than 0:0048° for given conditions. At the same time, for the multi-path signal synchronization problem in the metrology field, this paper proposes a signal delay measurement method combining test and algorithm procedures, which can control a delay within 25 μs.
Źródło:
Metrology and Measurement Systems; 2019, 26, 3; 497-504
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research and Design of Smart Care-Giving Clothing for Disabled Elderly
Autorzy:
Han, Chen
Lei, Shen
Ruoan, Ren
Han, Xu
Yanbing, Liu
Powiązania:
https://bibliotekanauki.pl/articles/2171964.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
smart clothing
disabled elderly
patient care
health monitoring
clothing design
Opis:
In current society, smart clothing technology has become a critical way to improve the life quality of the elderly. This work conducted a category product evaluation and user demand system through the bibliometrics method, product evaluation analysis, focus group interviews and questionnaires. Based on the system, we designed smart clothing from the aspects of the clothing structure, hardware, software program and intelligent terminal platform to meet the needs of disabled elderly people and their caregivers in multiple scenarios. According to the test results of the smart clothing, the average error of temperature and humidity monitoring is 0.20℃ and 2.88%RH. The time of putting on-taking off clothing in 6 representative daily scenarios was reduced by 51.67%. The daily body checking times, uncomfortable behaviours, and the anxiety of caregivers was decreased by 42.31%, 28.52% and 74.37%. Compared with ordinary clothing, six of the eight comfort performances are basically the same, and two are slightly worse.
Źródło:
Fibres & Textiles in Eastern Europe; 2022, 4 (151); 21--31
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative life cycle assessment of marine desox systems
Autorzy:
Cui, Mengqi
Lu, Yingwei
He, Jiahao
Ji, Lei
Wang, Hui
Liu, Shaojun
Powiązania:
https://bibliotekanauki.pl/articles/1573636.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
life cycle assessment
desulphurization
3E model
Opis:
With new sulphur oxides emission limits carried out in 2020, multiple desulphurisation methods have been proposed. The main desulphurisation scrubber systems were chosen and investigated using life cycle assessment. The whole system life is divided into the construction and operational phases. Three different systems classified by desulphurisers, namely, seawater, NaOH, and Mg-based systems, were modelled in GaBi software. Moreover, environmental, economic and energy aspects (3E model) were introduced for further analysis. Through this study, some conclusions have been drawn. As for the environmental aspect, the seawater system has the most pleasing performance since the primary emissions come from 1.24E+03 kg CO2 and 1.48E+01 kg chloride. The NaOH system causes 1000 times more emissions than the seawater. The Mg-based system has less pollution than the NaOH system, with 5.86E+06kg CO2 and 3.86E+03 kg chloride. The economic aspect is divided into capital expenditure (CapEx) and operational expenditure (OpEx) to estimate disbursement. The seawater system also has the most favourable cost appearance, which takes 1.7 million dollars without extra desulphuriser expenses, based on 10MW engine flue gas treatment. The next is the Mg-based system, which cost 2 million dollars in CapEx and $ 1200/year in OpEx for the desulphuriser. NaOH uses about 2.5 million dollars for construction and $ 30000/year in desulphuriser. As for the energy aspect, the seawater and Mg-based systems use less non-renewable energy than the NaOH system in the construction phase. In conclusion, the seawater system shows the best performance and could be an alternative in SOx control technologies. This study sheds light on the comprehensive evaluation of marine environmental protection technologies for further optimisation.
Źródło:
Polish Maritime Research; 2021, 1; 105-115
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SCREENING THE SPECIFIC SUBSTRATES OF ADENYLATION DOMAIN FROM MARINE ACTINOMYCETES BY FLUORESCENCE QUENCHING AND ISOTHERMAL TITRATION CALORIMETRY
Autorzy:
LEI, MING
ZHAO, ZHIJUAN
LIU, KE
LIU, YANLI
ZHANG, HUI
WU, XUE
GONG, SIYING
MA, YANLING
ZHAO, HAOBIN
LIU, JINLIN
MIN, JINRONG
QI, CHAO
Powiązania:
https://bibliotekanauki.pl/articles/895432.pdf
Data publikacji:
2018-12-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
A domain
Aspartic acid
Fluorescence quenching (FQ)
Isothermal titration calorimetry (ITC)
Marine actinomycetes
static quenching
Opis:
Adenylation domain (A domain) is a model of non-ribosomal peptide synthetases (NRPs), responsible for binding and activating the substrates-amino acids. In this study, a pGEX-2T-sare0718 recombinant plasmid (the gene sare0718 was cloned from Salinispora arenicola CNS-205, S.arenicola CNS-205) was transformed and expressed as a protein GST-Sare0718. Fluorescence quenching (FQ) was conducted to investigate the binding of 20 common amino acids to GST-Sare0718, then isothermal titration calorimetry (ITC) also be used[changed]. The results of FQ revealed that intrinsic fluorescence of GST-Sare0718 is quenched steadily by addition of aspartic acid (Asp) and glutamine (Gln) through static quenching mechanism. The binding constants Ka are Asp (1.504×106 L/mol) ≥ Gln (1.468×105 L/mol). And there is one binding site on the protein GST-Sare0718. We confirmed Asp preference of GST-Sare0718 by ITC. Therefore, Asp is the specific substrate. In addition, the experimental data indicates that the prediction system, “the specificity-conferring code”, is not suitable for marine actinomycetes. So it is urgent to set up a special predictive system for marine actinomycetes.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1287-1292
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of water intake layout along the wharf shoreline on ships
Autorzy:
Kong, Xian-wei
Ding, Lei
Liu, Hai-cheng
Qu, Jing
Li, Xiao-song
Powiązania:
https://bibliotekanauki.pl/articles/258971.pdf
Data publikacji:
2019
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
water intake
physical model
numerical model
lateral flow
hydrodynamic force
Opis:
The construction of a water intake along the wharf shoreline can realise the intensive and comprehensive utilisation of the shoreline. However, since the water intake will increase the lateral flow at the wharf and also the hydrodynamic forces on ships, it will bring risks to ships mooring and leaving. The effects of the water intake on ships are studied using a physical model, numerical model and standard formulas. The results show that it leads to an increase of the hydrodynamic forces acting on the ship when the standard formulas are used to calculate the forces without considering the water level difference between the two sides of the ship. The results of the physical model are closer to the real situation. Measures that can effectively reduce the influence of the water intake on ships are proposed by increasing the distance between the wharf front and the front of the water intake as well as the depth of the water inlet windows.
Źródło:
Polish Maritime Research; 2019, 4; 165-171
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of MoS2 Nanosheet Fillers on Poly(vinyl alcohol) Nanofibre Composites Obtained by the Electrospinning Method
Wpływ zastosowania wypełniaczy MoS2 na kompozyty z nanowłókien poli(alkoholu winylowego) otrzymane metodą elektroprzędzenia
Autorzy:
Yuan, Bin
Liu, Jun
Qiu, Lei
Hui, Qian
Chang, Meng-Jie
Li, Ya-Qing
Powiązania:
https://bibliotekanauki.pl/articles/233334.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
electrospinning
MoS2 nanosheet
poly(vinyl alcohol)
composite
nanofibre
elektroprzędzenie
nanoskładnik MoS2
poli(alkohol winylowy)
kompozyt
nanowłókno
Opis:
The graphene-like two dimensional (2D) inorganic materials have been been shown great interest for a variety of applications. In this work, polymer composite nanofibres containing molybdenum disulfide (MoS2) nanosheets were obtained by electrospinning. The MoS2 nanosheets were well dispersed inside the fibres, and the nanofibres maintained the fibre morphology well with the MoS2 nanosheets embedded. The incorporation of MoS2 nanosheets changes polymer nanofibre morphology from round to ribbon-like. Moreover, through thermogravimetric (TG) analysis and dynamic mechanical thermal analysis (DMTA) measurements, it was found that the MoS2 nanosheets as an additive material led to an increase in thermal stability and in the storage modulus. This work comprises an extensive approach to producing a novel 2D inorganic-organic composite structure, which should be applicable for membrane engineering with enhanced thermal and mechanical stability.
Dwuwymiarowe nieorganiczne materiały podobne do grafenu wywołały liczne zainteresowanie w różnych zastosowaniach. W pracy otrzymano metodą elektroprzędzenia kompozytowe nanowłókna polimerowe zawierające disiarczek molibdenu (MoS2). Nanoskładniki MoS2 były dobrze rozproszone we włóknach, a ich morfologia była na zadowalającym poziomie. Włączenie nanoskładników MoS2 zmienia nanowłókna polimerowe z morfologii okrągłej na wstążkową. Co więcej, dzięki analizie termograwimetrycznej (TG) i pomiarom dynamicznej mechanicznej analizy termicznej (DMTA) stwierdzono, że dodatek MoS2 może zapewnić wzrost stabilności termicznej i zwiększyć moduł przechowywania. Praca prezentuje rozszerzone podejście do produkcji nowej dwuwymiarowo nieorganiczno-organicznej struktury kompozytowej, która może mieć zastosowanie w wytwarzaniu membran o podwyższonej stabilności termicznej i mechanicznej.
Źródło:
Fibres & Textiles in Eastern Europe; 2020, 3 (141); 62-67
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 23

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies