Autor: Wang, D.Q. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Female mouse model of diabetes mellitus induced by streptozotocin and high-carbohydrate high-fat diet
Autorzy:: Guo, R.
Dong, J.
Wang, D.Q.
Gu, Y.F.
Powiązania:: https://bibliotekanauki.pl/articles/16627528.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: diabetes mellitus
female mouse
pathological analysis
streptozotocin
high-carbohydrate high-fat diet
Opis:: With the improvement of people’s living standards and rapid economic development, the incidence of diabetes mellitus (DM) is increasing in most parts of the world. DM presents an important potential threat to human health. In the present study, a model of diabetes in female mice was established, and fasting blood glucose was detected at week 4, after which the biochemical profiles were evaluated by histopathological analysis. The success rate of modeling in the normal control (NC) group and the low/ middle/high-dose streptozotocin (STZ) group were 0, 0, 25% and 60%, respectively. In the middle-dose and high-dose STZ groups, the liver index was increased significantly compared with the NC group (p<0.05). The blood biochemical indicators of total cholesterol and low density lipoprotein cholesterol in three STZ injection groups were as follows: alanine aminotransferase and aspartate transaminase in middle- and high-dose STZ groups, high-density lipoprotein cholesterol and serum creatinine in the high-dose STZ group, and blood urea nitrogen in the middle-dose STZ group were significantly increased (p<0.05). The level of total triglycerides was lower, obviously, in the high-dose STZ group than in the NC group (p<0.05). The mice showed marked steatosis, green-dyed fiber tissue coloring in varying degrees, and the contour of the hepatic lobules basically disappeared in STZ injection groups. The results suggest that to establish a diabetes model for female ICR mice, the optimum dose of STZ is 100 mg/kg.
Źródło:: Polish Journal of Veterinary Sciences; 2022, 25, 4; 547-555
1505-1773
Pojawia się w:: Polish Journal of Veterinary Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Preparation and cytological study of collagen/nano-hydroxyapatite/graphene oxide composites
Autorzy:: Wang, J.
Wang, Y.
Liu, D.
Yang, Q.
Huang, C.
Yang, C.
Zhang, Q.
Powiązania:: https://bibliotekanauki.pl/articles/307450.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: nanohydroksyapatyt
tlenek grafitu
mineralizacja
kolagen
nano-hydroxyapatite
graphene oxide
biomimetic mineralization
collagen
Opis:: Biomimetic mineralized composite scaffolds are widely used as natural bone substitute materials in tissue engineering by inducing and assembling bonelike apatite. In this study, the single lamellar structure of graphene oxide (GO) powder was prepared via an improved Hummers’ method. Methods: To better mimic natural bone, the collagen (COL)/Nano-hydroxyapatite (nHA)/graphene oxide (GO) composite material was prepared by simulated body fluid (SBF) method using COL/GO as a matrix template. Hydroxyapatite (HA) with calcium ion deficiency was achieved via biomimetic mineralization, and it had properties closer to those of natural bone than pure HA has. Results: The mineralized COL/nHA/GO composites exhibited loose porous structures, and the connectivity of the holes was good and thus beneficial to the exchange of nutrients and excreted metabolites. Conculsions: Antibacterial and MTT experiment confirmed that the COL/nHA/GO composite material had excellent antibacterial property and biocompatibility. Hence, these results strongly suggested the mineralized COL/nHA/GO composite is a good candidate biomaterial to be applied in bone tissue engineering.
Źródło:: Acta of Bioengineering and Biomechanics; 2018, 20, 4; 65-74
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A numerical approach in applying panel method for the added mass of a group of sections in fluids
Autorzy:: Zhang, D.
Li, P.
Wang, Q.
Yang, Y.
Powiązania:: https://bibliotekanauki.pl/articles/38695713.pdf
Data publikacji:: 2023
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Tematy:: numerical method
panel method
fluid-structure interaction
confined fluid
fluid mass coefficients
Opis:: This paper firstly expands an efficient numerical methodology developed from the source panel method to the added mass calculation of long column systems in fluid. Structures submerged in fluid are considered as two-dimensional and are discretized into a number of source panels. The influence coefficient matrices and the potential function are then calculated and the fluid forces are calculated by the unsteady Bernoulli equation. Finally, we utilize this present method to calculate the mass coefficients of some typical problems, which effectively verifies its feasibility and accuracy. This method takes into account both applicability and computational efficiency. On the one hand, in contrast to the analytical method which is only applicable to specific cross-sections, this method is applicable to arbitrary boundaries with C⁰ continuity in mathematics. On the other hand, this method requires less mesh and computation than commercial software. This paper extends the application of the source panel method which is widely used in aerodynamics to provide a reference for added mass calculation problems in engineering.
Źródło:: Archives of Mechanics; 2023, 75, 1-2; 151-168
0373-2029
Pojawia się w:: Archives of Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Irrational elliptic functions and the analytical solutions of SD oscillator
Niewymierne funkcje eliptyczne i rozwiązania analityczne dla oscylatora typu SD
Autorzy:: Cao, Q.
Wang, D.
Chen, Y.
Wiercigroch, M.
Powiązania:: https://bibliotekanauki.pl/articles/280356.pdf
Data publikacji:: 2012
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: SD oscillator
irrational nonlinearity
irrational elliptic functions
threshold of chaos
Opis:: The smooth and discontinuous (SD) oscillator is a strongly nonlinear system with an irrational restoring force proposed in P.R.E (2006), which leads to barriers for the conventional methods to investigate the dynamical behaviour directly. In this paper, two kinds of irrational elliptic functions and a kind of hyperbolic functions are defined in the real domain to formulate the analytical solutions of the system. The properties of the functions are obtained including differentiability, periodicity and parity. As the application of the defined irrational functions, the chaotic thresholds of the oscillator are also depicted by using the Melnikov method. Numerical analysis shows the efficiency of the proposed procedure.
Oscylator typu gładkiego i nieciągłego (smooth and discontinuous— SD) jest silnie nieliniowym układem mechanicznym z niewymierną siłą restytucyjną opisaną przez P.R.E. w 2006 r. Jej charakter stanowi barierę dla konwencjonalnych metod badania dynamiki oscylatorów SD w sposób bezpośredni. W pracy zdefiniowano dwa rodzaje niewymiernych funkcji eliptycznych i jeden typ hiperbolicznych w dziedzinie liczb rzeczywistych do wyznaczenia rozwiązań analitycznych rozważanego układu. Właściwości tych funkcji obejmują różniczkowalność, okresowość i parzystość. Tak sformułowanych funkcji, jako przykład ich zastosowania, uzyto do określenia zakresów występowania drgań chaotycznych oscylatora przy wykorzystaniu metody Mielnikowa. Symulacje numeryczne potwierdziły efektywność zaproponowanej metody.
Źródło:: Journal of Theoretical and Applied Mechanics; 2012, 50, 3; 701-715
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Sea ice management for oil and gas platforms in the Bohai Sea
Autorzy:: Zhang, D.
Yu, S.
Wang, Y.
Yue, Q.
Powiązania:: https://bibliotekanauki.pl/articles/258746.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: Bohai
sea ice management
ocean platform
ice-induced vibration
ice risk prediction
Opis:: Bohai is a typical marginal oil field in an ice region, where most of the oil and gas platforms are economical. Sea ice is the main factor that affects the safety of oil and gas platforms in Bohai. Due to the complexity of the ice load and ice-induced vibrations, there are large security risks when developing Bohai oil and gas in the winter. It is difficult to ensure the safe production of oil and gas in winter using existing sea ice disaster warning technologies. Based on winter oil and gas production in the Bohai Sea’s Liaodong Bay, a set of suitable sea ice management systems is proposed in this paper. These systems integrate sea ice monitoring, risk assessment and risk prediction technologies. Based on the risk warning system, an ice management model of a Bohai ice platform has been put into practice, which ensures the safe production of the platform in winter.
Źródło:: Polish Maritime Research; 2017, S 2; 195-204
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Estimation of small uav position and attitude with reliable in-flight initial alignment for MEMS inertial sensors
Autorzy:: Wang, D.
Dong, Y.
Li, Q.
Wu, J.
Wen, Y.
Powiązania:: https://bibliotekanauki.pl/articles/221716.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: MEMS
INS
GNSS
in-flight alignment
unmanned aerial vehicle
Opis:: The advance of MEMS-based inertial sensors successfully expands their applications to small unmanned aerial vehicles (UAV), thus resulting in the challenge of reliable and accurate in-flight alignment for air-borne MEMS-based inertial navigation system (INS). In order to strengthen the rapid response capability for UAVs, this paper proposes a robust in-flight alignment scheme for airborne MEMS-INS aided by global navigation satellite system (GNSS). Aggravated by noisy MEMS sensors and complicated flight dynamics, a rotation-vector-based attitude determination method is devised to tackle the in-flight coarse alignment problem, and the technique of innovation-based robust Kalman filtering is used to handle the adverse impacts of measurement outliers in GNSS solutions. The results of flight test have indicated that the proposed alignment approach can accomplish accurate and reliable in-flight alignment in cases of measurement outliers, which has a significant performance improvement compared with its traditional counterparts.
Źródło:: Metrology and Measurement Systems; 2018, 25, 3; 603-616
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Marine Traffic Real-Time Safety Index
Autorzy:: Xu, T.
Hu, Q. Y.
Xiang, Z.
Wang, D. L.
Powiązania:: https://bibliotekanauki.pl/articles/116195.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Vessel Traffic
safety at sea
Marine Traffic
Marine Traffic Real-Time Safety Index
Real Time
Real-Time Safety Index
Automatic Identification System (AIS)
Waigaoqiao Channel
Opis:: To reflect the safety degree of marine traffic in real-time and intuitively, this paper put forward a concept of real-time safety index of marine traffic, established marine traffic real-time safety index system, and constructed a real-time safety index evaluation model by using vessel traffic and navigation environmental data provided by shore-based AIS base station network, and quantifying a variety of data which impacts the safety of marine traffic such as ships’ real-time dynamic data, weather changes and so on. A continuous real-time evaluation to a specific area was carried out in the form of real-time index curve, taking the Waigaoqiao Channel of Port Shanghai as an example, to verify the feasibility and effectiveness of marine traffic real-time safety index.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8 no. 4; 599-603
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China
Autorzy:: Du, G.-Y.
Peng, J.
Wang, D.-Z.
Wang, Q.-J.
Wang, Y.-F.
Zhang, H.
Powiązania:: https://bibliotekanauki.pl/articles/22906.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Opis:: The morphology and ontogeny of the trilobite Changaspis elongata based on 216 specimens collected from the Lazizhai section of the Balang Formation (Stage 4, Series 2 of the Cambrian) in Guizhou Province, South China are described. The relatively continuous ontogenetic series reveals morphological changes, and shows that the species has seventeen thoracic segments in the holaspid period, instead of the sixteen as previously suggested. The development of the pygidial segments shows that their number gradually decreases during ontogeny. A new dataset of well-preserved specimens offers a unique opportunity to investigate developmental traits after segment addition is completed. The ontogenetic size progressions for the lengths of cephalon and trunk show overall compliance with Dyar’s rule. As a result of different average growth rates for the lengths of cephalon, trunk and pygidium, the length of the thorax relative to the body shows a gradually increasing trend; however, the cephalon and pygidium follow the opposite trend. Morphometric analysis across fourteen post-embryonic stages reveals growth gradients with increasing values for each thoracic segment from anterior to posterior. The reconstruction of the development traits shows visualization of the changes in relative growth and segmentation for the different body parts. The new dataset and growth gradient of the trunk suggest that the thoracic segment growth dynamics of early Cambrian to Silurian trilobites follow the same general continuous, steady-state growth gradient decreasing from posterior to anterior.
Źródło:: Acta Palaeontologica Polonica; 2019, 64, 4
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The Comparison Study on AIS Signal Reception Rate with Directional Antenna and Omni Antenna
Autorzy:: Xu, T.
Hu, Q.
Xiang, Z.
Yang, C.
Wang, D.
Powiązania:: https://bibliotekanauki.pl/articles/116436.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Automatic Identification System (AIS)
AIS Signal
AIS Data
Yagi antenna
Omni antenna
Directional Antenna
reception rate
VHF Technology
Opis:: With the wide use of AIS system in the world, especially in ports and the waters with heavy traffic, AIS message loss may be related to environmental conditions, obstacle, limitation of VHF technology and AIS network overload, thereby reducing the AIS signal successful reception rate. This paper selected typical AIS data received by Yagi and Omni antennas at the same time in specific waters, uses grid and AIS data recovery technology, establishes the AIS signal coverage model, analyzes signal reception rate of Yagi antenna and Omni antenna of AIS base station, and verified the superiority of Yagi antenna in AIS signal reception rate.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 205-211
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Novel Green Dyeing Process of Soybean Protein/Poly(vinyl alcohol) Blend Fibre
Nowy ekologiczny proces barwienia mieszanek sojowych włókien proteinowych z PVA
Autorzy:: Lv, J.
Zhou, Q.
Gao, D.
Liu, G.
Wang, C.
Powiązania:: https://bibliotekanauki.pl/articles/233043.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: water-soluble chitosan derivative
soybean protein/poly (vinyl alcohol) blend fiber
reactive dyes
salt-free dyeing
denaturalization bath
rozpuszczalna w wodzie pochodna chitosanu
mieszanka sojowych włókien proteinowych
barwniki reaktywne
barwienie bez soli
kąpiel bezsolna
kąpiel denaturalizacyjna
proces ekologicznego barwienia
Opis:: A water-soluble chitosan derivative N-[(2-hydroxy-3-trimethylammonium)propyl] chitosan chloride (HTCC) was prepared and used for the modification of soybean protein/poly (vinyl alcohol) blend fiber (SPF). The dying properties of modified SPF with Cibacron FN series reactive dyes were discussed in relation to a salt-free and alkaline/acidic denaturalization dyeing bath (green dyeing process). Results showed that dye exhaustion in the green dyeing process was obviously higher than that in the conventional dyeing process, despite the addition of a large amount salt in the latter case. However, the washing fastness of SPF treated with HTCC in the green dyeing process was inferior to that of untreated SPF in the conventional dyeing process. COD (chemical oxygen demand) values of the green dyeing process effluent were found to be decreased compared with conventional dyeing effluent, which indicated that the green dyeing process could decrease the amount of toxicity of dyeing effluent remarkably.
Przygotowano rozpuszczalną w wodzie mieszankę pochodnej chitozanu - chlorek N-[(2-hydroksy-3-trimetyloamono)propylo] chitozanu (HTCC). Zastosowano ją dla modyfikacji mieszanki sojowych włókien proteinowych z PVA. Następnie badano właściwości barwienia zmodyfikowanych włókien za pomocą barwników reaktywnych Cibacron seria FN zastosowanych w kąpieli bezsolnej i zasadowo/kwasowej denaturalizacyjnej kąpieli (ekologiczny proces barwienia). Wyniki wskazały, że wyczerpanie barwnika w procesie ekologicznego barwienia było zasadniczo wyższe niż to przy barwieniu konwencjonalnym, niezależnie od dodatku dużej ilości soli w tym ostatnim. Jednakże odporność na pranie włókien barwionych w procesie ekologicznym była niższa w stosunku do procesu konwencjonalnego. Stwierdzono że wartość COD (chemiczne zapotrzebowanie tlenu) w przypadku ścieków z ekologicznego barwienia była niższa w porównaniu do ścieków z barwienia konwencjonalnego, co wskazuje, że proces ekologicznego barwienia może w znacznym stopniu zmniejszyć toksyczność ścieków.
Źródło:: Fibres & Textiles in Eastern Europe; 2015, 5 (113); 55-59
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

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