Autor: Yu, Y. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Study on transport packages used for food freshness preservation based on thermal analysis
Autorzy:: Yu, Y.
Powiązania:: https://bibliotekanauki.pl/articles/240937.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat transfer theory
logistics transportation
Ansys Flotran
temperature distribution
teoria przenikania ciepła
logistyka transportowa
ANSYS Flotran
rozkład temperatury
Opis:: In recent time, as the Chinese consumption level increases, the consumption quantity of high-value fruits, vegetables and seafood products have been increasing year by year. As a consequence, the traffic volume of refrigerated products also increases yearly and the popularization degree of the cold-chain transportation enhances. A low-temperature environment should be guaranteed during transportation, thus there is about 40% of diesel oil should be consumed by the refrigerating system and the cold-chain transportation becomes very costly. This study aimed to explore methods that could reduce the cost of transport packages of refrigerated products. On the basis of the heat transfer theory and the fluid mechanics theory, the heat exchanging process of corrugated cases during the operation of refrigerating system was analyzed, the heat transfer process of corrugated cases and refrigerator van was theoretically analyzed and the heat balance equation of corrugated cases was constructed.
Źródło:: Archives of Thermodynamics; 2016, 37, 4; 121-135
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Nonclassical Properties of Para-Bose Superposition States
Autorzy:: Yu, Y.
Wang, D.
Powiązania:: https://bibliotekanauki.pl/articles/1808074.pdf
Data publikacji:: 2009-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 42.50.Dv
03.65.Fd
Opis:: We investigate the nonclassical properties of para-Bose superposition states which involve the vacuum and one- or two-photon state of paraboson. It is found that these para-Bose superposition states exhibit stronger squeezing and antibunching. The amplitude-squared squeezing for these states is also examined.
Źródło:: Acta Physica Polonica A; 2009, 115, 3; 613-616
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Mathematical modelling of the unstationary friction interaction of the working elements of the locomotive disk brake
Matematicheskoe modelirovanie nestacionarnogo frikcionnogo vzaimodejjstvija rabochikh ehlementov diskovogo tormoza lokomotiva
Autorzy:: Yu, Y.
Sosnov, I.I.
Powiązania:: https://bibliotekanauki.pl/articles/792697.pdf
Data publikacji:: 2011
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11B
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Phase change of chlorite in reducing atmosphere
Autorzy:: Liu, X.
Yu, Y.
Chen, W.
Powiązania:: https://bibliotekanauki.pl/articles/110704.pdf
Data publikacji:: 2014
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: chlorite
phase change
magnetizing
reducing roasting
magnetite
Opis:: Magnetizing roasting is an important pre-treatment technique for beneficiation of hematite and limonite ores. Reduction mechanisms of these iron minerals have been fully studied while the mechanism of reduction of chlorite is not well understood. In this study, a reduction roasting study examining the phase change of chlorite with roasting temperature was undertaken. The major finding from this study was that chlorite partially was reduced to magnetite by carbon at 750 ⁰C, and the newly formed magnetite was finely disseminated within quartz and olivine. It was demonstrated that these locked magnetite particles would be reported to iron concentrate by low intensity magnetic separation resulting in high impurity content, especially SiO2 and Al2O3 contents in the concentrate.
Źródło:: Physicochemical Problems of Mineral Processing; 2014, 50, 2; 607-614
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Batch extractive distillation of mixture methanol-acetonitrile using aniline as a asolvent
Autorzy:: Li, G.
Yu, Y.
Bai, P.
Powiązania:: https://bibliotekanauki.pl/articles/779141.pdf
Data publikacji:: 2012
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: batch extractive distillation
methanol
acetonitrile
aniline
simulation
Opis:: Methanol and acetonitrile form a minimum azeotrope at 336.74 K, which contains methanol 76.89 mas%. The simulation and the experiment to separate the mixture by batch extractive distillation using aniline as entrainer is performed. Based on the experimental and simulative VLE data, aniline is chosen to be the suitable solvent. The sensitivity analysis about the number of stages, the refl ux ratio, the solvent feed stage and the solvent fl ow rate is conducted to obtain the optimal parameters and confi guration of the extractive distillation column with minimal energy requirements. The most appropriate confi guration is 30 theoretical stages. The optimal entrainer feeding stage is 8 with a solvent fl ow rate of 20kg/h and the refl ux ratio of 2.0, respectively. The simulation results show the effect of the main variables on the extractive distillation process. The experiment is carried out to corroborate the feasibility of the separation of methanol-acetonitrile by batch extractive distillation.
Źródło:: Polish Journal of Chemical Technology; 2012, 14, 3; 48-53
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Modelowanie i symulacja zabezpieczenia materiałowego jednostki bojowej ukierunkowanego na realizację misji
Modeling and simulation of mission-oriented combat unit materiel support
Autorzy:: Li, D.
Yu, Y.
Zhang, L.
Zhang, Y.
Powiązania:: https://bibliotekanauki.pl/articles/301075.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: jednostka bojowa
wsparcie materiałowe
modelowanie i symulacja
ukierunkowany na realizację misji
combat unit
materiel support
modeling and simulation
mission-oriented
Opis:: W artykule przedstawiamy ramy modelowania i symulacji ukierunkowanego na realizację misji Systemu Zabezpieczenia Materiałowego Jednostki Bojowej (Combat Unit Material Support System, CUMSS). Opisujemy proces zabezpieczania materiałowego, analizujemy jego charakterystyki i optymalizujemy zasoby. Prezentowany model opiera się na obszernej analizie procesu eksploatacji oraz procesu wykorzystania zasobów. Skonstruowano strukturę federacyjną i model obiektowy federacji dla zabezpieczenia materiałowego jednostki bojowej. Przedstawiono, na podstawie przykładowej misji, federacje dla zdarzeń dyskretnych, zdarzeń ciągłych i procesu podejmowania decyzji. Do analizy charakterystyk CUMSS w przedstawionym przykładzie misji użyto symulacji.
In this paper, we present a framework for modeling and simulation of a mission-oriented Combat Unit Materiel Support System (CUMSS). We describe the process of materiel support, analyze its performance, and optimize the resources. This model is based on a comprehensive analysis of the maintenance process and the resource utilization process. A federation framework and a federation object model are constructed for combat unit materiel support. For an example, mission, we provide the federations for the discrete events, the continuous events, and the decision-making process. Simulation is used to analyze the performance of CUMSS for this example mission.
Źródło:: Eksploatacja i Niezawodność; 2010, 2; 51-54
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Distribution and sources of n-alkanes in surface sediments of Taihu Lake, China
Autorzy:: Yu, Y.
Li, Y.
Guo, Z.
Zou, H.
Powiązania:: https://bibliotekanauki.pl/articles/205298.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: n-alkanes
surface sediments
Taihu Lake
Opis:: The last study on n-alkanes in surface sediments of Taihu Lake was in 2000, only 13 surface sediment samples were analysed, in order to have a comprehensive and up-to-date understanding of n-alkanes in the surface sediments of Taihu Lake, 41 surface sediment samples were analyzed by GC-MS. C₁₀ to C₃₇ were detected, the total concentrations of n-alkanes ranged from 2109 ng g⁻¹ to 9096 ng gg⁻¹ (dry weight). There was strong odd carbon predominance in long chain n-alkanes and even carbon predominance in short chain n-alkanes. When this finding was combined with the analysis results of wax n-alkanes (WaxCn), carbon preference index (CPI), unresolved complex mixture (UCM), hopanes and steranes, it was considered that the long chain n-alkanes were mainly from terrigenous higher plants, and that the short chain n-alkanes mainly originated from bacteria and algae in the lake, compared with previous studies, there were no obvious anthropogenic petrogenic inputs. Terrestrial and aquatic hydrocarbons ratio (TAR) and C₂₁−/C₂₅₊ indicated that terrigenous input was higher than aquatic sources and the nearshore n-alkanes were mainly from land-derived sources. Moreover, the distribution of short chain n-alkanes presented a relatively uniform pattern, while the long chain n-alkanes presented a trend that concentrations dropped from nearshore places to the middle of lake.
Źródło:: Archives of Environmental Protection; 2016, 42, 1; 49-55
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Comparative analysis of CpG islands in two genotypes of African swine fever virus
Autorzy:: Yu, Y.-Y.
X, M.-S.
Liu, Q.
Powiązania:: https://bibliotekanauki.pl/articles/16539329.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: African Swine Fever Virus (ASFV)
genotype
DNA methylation
CpG island
Opis:: African swine fever (ASF) is an acute, hemorrhagic, and devastating viral infectious disease that causes important economic losses to the swine industry. Currently, there are no effective vaccines or drugs available. Epigenetic mechanisms, especially cytosine methylation of cytosine-phosphate-guanine (CpG) islands, have a significant impact on the life cycle of several viruses. Hence, drugs targeting DNA methylation may potentially be used for the treatment of ASF. Here, we selected the inner core, core shell, inner membrane, capsid, and external envelope membrane, to analyze the characteristics of CpG islands in the ASF virus (ASFV) genomes. Furthermore, we analyzed the promoters and CpG islands in the upstream regions of these genes. Results showed that the CpG islands of seven genes were conserved in the genomes of two genotype of ASFV strains, whereas the CpG islands of other genes were relatively conserved (ASFV strains differed mainly in the quantity of CpG islands). The different distribution of CpG islands in the genomes of different ASFV strains may affect their methylation status, which may in turn affect the regulation of viral gene expression, leading to different clinical outcomes. In addition, the predicted promoter regions based on the upstream sequences of most genes overlapped with CpG island positions. Methylation of the binding sites of the promoter regions inhibits the binding of the transcription factors to the promoters, thus inhibiting the activation of the promoters and limiting the synthesis of viral proteins. The results of this study provide a basis for exploring new antiviral therapeutic strategies from an epigenetic perspective.
Źródło:: Polish Journal of Veterinary Sciences; 2022, 25, 3; 455-462
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Expression of the highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV) in various types of cells in thymic tissues
Autorzy:: Liu, Q.
Yu, Y.-Y.
Wang, H.-Y.
Powiązania:: https://bibliotekanauki.pl/articles/16539177.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: pig
thymus
highly pathogenic porcine reproductive and respiratory syndromevirus
immunofluorescence double labeling method
target cells
Opis:: Thymus, an important central immune organ in pigs, is the site of T lymphocyte development and maturation and an important target organ for infection and replication of various pathogens. Highly pathogenic porcine reproductive and respiratory syndrome virus (HP-PRRSV) infection results in severe thymic atrophy in piglets. This study aimed to explore the effects of HP-PRRSV on the thymic structure of piglets to elucidate the pathogenesis of thymic atrophy induced by HP-PRRSV. In this study, histopathological techniques and immunofluorescence double staining techniques were used to analyze thymic tissues infected by HP-PRRSV to explore the structural changes of thymus caused by the viral infection and its target cell types. An antibody of cluster of differentiation (CD) 3 (CD3), CD20, CD80, or calgranulin + calprotectin was applied to identify T cells, B cells, dendritic cells (DCs), and macrophages, respectively. The results indicated that a variety of cell components in the thymic tissue were diffusely damaged after viral infection. In the infected thymic tissue, CD80- or calgranulin + calprotectin- -labeled cells supported the HP-PRRSV infection, whereas CD3-labeled T cells and CD20- -labeled B cells did not support the viral infection. The results showed that HP-PRRSV caused the reduction of visible cell components in the thymic tissue, and the virus attacked CD80- and calgranulin + calprotectin-positive cells (such as DCs and macrophages) in the thymic tissue, which played an important role in the pathogenesis of thymus atrophy. These results lay the foundation for elucidating the immunosuppression of piglets after infection with HP-PRRSV.
Źródło:: Polish Journal of Veterinary Sciences; 2022, 25, 2; 287-294
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Optimization of differentiation time of mesenchymal-stem-cell to tenocyte under a cyclic stretching with a microgrooved culture membrane and selected measurement cells
Autorzy:: Morita, Y.
Yamashita, T.
Toku, Y.
Yu, Y.
Powiązania:: https://bibliotekanauki.pl/articles/307018.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: różnicowanie
kości
stymulacja mechaniczna
hBMSC
cyclic stretch
differentiation
differentiation time
human bone marrow-derived mesenchymal stem cell
mechanical stimulus
tenocyte
Opis:: There is a need for efficient stem cell-to-tenocyte differentiation techniques for tendon tissue engineering. More than 1 week is required for tenogenic differentiation with chemical stimuli, including co-culturing. Research has begun to examine the utility of mechanical stimuli, which reduces the differentiation time to several days. However, the precise length of time required to differentiate human bone marrow-derived mesenchymal stem cells (hBMSCs) into tenocytes has not been clarified. Understanding the precise time required is important for future tissue engineering projects. Therefore, in this study, a method was developed to more precisely determine the length of time required to differentiate hBMSCs into tenocytes with cyclic stretching stimulus. Methods: First, it had to be determined how stretching stimulation affected the cells. Microgrooved culture membranes were used to suppress cell orientation behavior. Then, only cells oriented parallel to the microgrooves were selected and evaluated for protein synthesis levels for differentiation. Results: The results revealed that growing cells on the microgrooved membrane and selecting optimally-oriented cells for measurement improved the accuracy of the differentiation evaluation, and that hBMSCs differentiated into tenocytes in approximately 10 h. Conclusions: The differentiation time corresponded to the time required for cellular cytoskeleton reorganization and cellular morphology alterations. This suggests that cells, when subjected to mechanical stimulus, secrete mRNAs and proteins for both cytoskeleton reorganization and differentiation.
Źródło:: Acta of Bioengineering and Biomechanics; 2018, 20, 1; 3-10
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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