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Przygotowanie ekstraktów polisacharydowych pyłku chryzantemy i ich wpływ na komórki in vitro raka jelita grubego

Fang Z., Luo R., Jiang M., Jiang G., Fu M., Chen S., Lai X.

Przemysł Chemiczny

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2018

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T. 97, nr 10

1733--1736

PL

Polisacharydy zawarte w pyłku chryzantem ekstrahowano wodą i wytrącano przy użyciu alkoholu. Cukier o charakterze obojętnym i 2 cukry o charakterze kwasowym rozdzielono, stosując chromatografię jonowymienną. Skład monosacharydów oznaczono metodą wysokosprawnej chromatografii cieczowej. Działanie przeciwnowotworowe polisacharydów oceniano, badając ich wpływ na proliferację komórek nowotworowych. Hamowanie proliferacji HCT116 nie było znaczące, gdy stężenie wynosiło 5 mg/mL (p > 0,05), jednak działanie to w stosunku do komórek nowotworowych HCT116 i HT-29 było znaczące przy tym samym stężeniu (p < 0,05). Nieprzetworzone wyciągi polisacharydowe miały większy wpływ na proliferację komórek in vitro raka jelita grubego niż poszczególne polisacharydy.

EN

Polysaccharides were extd. from Dendranthema indicum var. Asteraceae bee pollens with H2O (yield 7.9%), pptd. with EtOH and sepd. by ion-exchange chromatog. into a neutral sugar and 2 acidic ones. The monosaccharide compn. was detd. by high performance liq. chromatog. They contained rhamnose, galacturonic acid, glucose, galactose and arabinose. The anticancer activity of the polysaccharides was evaluated by studying their effect on proliferation of HCT116 and HT-29 cancer cells. The inhibitory effect of individual sugars on the proliferation of HCT116 was not significant when their concns. were 5 mg/mL, but the total polysaccharides showed a significant effect on proliferation of HCT116 and HT-29 tumor cells at the same concn

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Smart services for enhancing personal competence in Industrie 4.0 digital factory

Sun J., Gao M., Wang Q., Jiang M., Zhang X., Schmitt R.

LogForum

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2018

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Vol. 14, no. 1

51--57

EN

Background: Adaptive digitalization and networking of machines, working parts, employees and other entities on the plant floor are core of realizing industry 4.0, so that information and instruction will be available everywhere and all the time in the production process. Thus, smart devices, especially smart wearables, will play a very important role to help workers being integrated in the in the future manufacturing environment, as information need to be transferred faster and with the right level of detailing with respect to the individual need of workers, factory managers etc. Methods: The implementation of an indoor localization system using Bluetooth beacons in the shop floor as part of an enterprise IoT platform was introduced. This sensor network is aimed to implement tracing and tracking of workers and working parts in the future smart factory, as well as the to the networking of the smart wearables with existing manufacturing machines. The investigated problem was the inaccuracy and the instability of the sensor signals by such Bluetooth sensor networks. To solve the problem, various algorithms were investigated. Results and conclusions: The possible solution of given problem was solved by finding an algorithm improving the communication between devices. Together with the location information from Beacon network and orientation information from the compass sensor, it is able to determine the machine in the near, which the employee with the Smart Glasses is currently pointing to.

PL

Wstęp: Zastosowanie sieciowych rozwiązań dla urządzeń i ich części, jak również jako wspomożenie dla pracowników na poziomie hali produkcyjnej jest podstawowym elementem wdrożenia Industry 4.0., dzięki czemu w każdym momencie i w każdym miejsce zapewnia się dostępność do potrzebnej informacji. W związku z tym, urządzenia mobilne typu smart będą odgrywały ważną rolę w integrowaniu pracowników w środowisko produkcyjne w przyszłości, informacja będzie mogła być przekazywana szybciej i z większą szczegółowością w odniesieniu do poszczególnych pracowników czy kadry zarządzającej. Metody: Zastosowanie wewnętrznej lokalizacji przy użyciu Bluetooth beaconów na poziomie hali produkcyjnej jako fragmentu zakładowej platformy Internetu rzeczy zostało wdrożone. Sieć sensorów ma na celu śledzenie pracowników oraz urządzeń w przyszłościowym zakładzie produkcyjnym, jak również ma być połączeniem z istniejącym parkiem urządzeń produkcyjnych. Badany problem polegał na nietrafności i niestabilności sygnałów sensorów używanych w tej sieci. W celu rozwiązania problemu poddano analizie różne algorytmy możliwych rozwiązań. Wyniki i wnioski: Znaleziono możliwe rozwiązanie analizowanego problem poprzez określenie odpowiedniego algorytmu poprawiającego komunikację pomiędzy urządzeniami. W połączeniu z lokalizacją informacji przy zastosowania sieci beaconów oraz zorientowaniu informacji pochodzących z sensorów, można było zlokalizować urządzenie znajdujące się w pobliżu danego pracownika przy użyciu okularów Smart Glasses.

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Change characteristics of DSi and nutrition structure at the Yangtze River Estuary after Three Gorges Project impounding and their ecological effect

Li L., Shen X., Jiang M.

Archives of Environmental Protection

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2017

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Vol. 43, no. 2

74--79

EN

The variation law of dissolved silica (DSi), dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) and nutrition structure after the Three Gorges Project (TGP) impounding as well as their ecological effect were analyzed according to monitoring survey of the Yangtze River Estuary in spring (May) and summer (August) from 2004–2009. The results showed that after impounding, DSi and DIN concentration decreased and increased, respectively. During the study period, DSi decreased by about 63%, while DIN almost tripled. DIP concentration fluctuated slightly. With respect to nutrition structure, N:P increased, whereas Si:P and Si:N declined. According to chemometry standard of nutrient limits, nutrition structure tended to be imbalanced and the limiting factor of phytoplankton growth (P) was studied. Changes of nutrition structure have largely decreased diatom and caused different composition of dominant phytoplankton species. This may change ecosystem structure of the Yangtze River Estuary.

4

On the Interaction of Resonance And Bragg Scattering Effects for the Locally Resonant Phononic Crystal with Alternating Elastic and Fluid Matrices

Yuan B., Chen Y., Jiang M., Tang S., He M., Tu M.

Archives of Acoustics

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2017

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Vol. 42, No. 4

725--733

EN

Three-dimensional (3D) locally resonant phononic crystals (LRPCs) are studied with the aim of optimising the sub-wavelength band gaps of such composites. By analysing their effective acoustic properties, it has been found that the effective acoustic speed of the composite will drop to zero when local resonance arise, and will increase monotonically when Bragg scattering effects occur. Moreover, if the matrix is a low-shear-speed medium, local resonators can significantly reduce the effective acoustic speed of the composite and, therefore, lower the frequency where Bragg scattering effects occur. Hence, a specific LRPC with alternating elastic and fluid matrices is proposed, whose resonance and Bragg gaps are already close in frequency. The fluid matrix behaves as a wave filter, which prevents the shear waves from propagating in the composite. By using the layer-multiple-scattering theory, the coupling behaviour of local resonance and Bragg scattering band gaps has been investigated. Both gaps are enhanced when they move closer to each other. Finally, a gap-coupled case is obtained that displays a broad sub-wavelength band gap. Such proposal excels at the application of underwater acoustic materials since the arrangement of structure can be handily adjusted for tuning the frequency of coupled gap.

5

Annual variability of ichthyoplankton in the Yangtze River estuary of China from August 2002 to 2009

Jiang M., Shen X. Q., Li L., Quan W. M.

Oceanological and Hydrobiological Studies

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2013

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Vol. 42, No. 1

59-69

EN

The annual variability of ichthyoplankton in the Yangtze River estuary, located at the junction of the East China Sea and the Yellow Sea, on the continental shelf at the western rim of the Pacific Ocean, was studied using vertical tows at twenty stations from August 2002 to August 2009. Basic oceanographic parameters such as temperature and salinity were also measured to evaluate their relationship to the abundance of ichthyoplankton. The eggs or larvae of a total of 34 fish species were present in the samples. Only 8 species were found to occur during every year. Engraulis japonicus and Stolephorus commersonii eggs, as well as Coilia mystus and Stolephorus commersonii larvae, were highly abundant during this period. Additionally, water storage in the Three Gorges Reservoir, which began in June 2003, had significant effects on the abundance of estuarine species, as well as on the composition and diversity of ichthyoplankton; this became evident when these values were compared to the findings from 2002. The number of species (species richness) and abundance of each species varied among the stations relative to the salinity in the estuary during the study period.

6

Growth orientation transition and metal-like conductivity of Ti, Al co-doped ZnO films

Jiang M., Liu X., Wang H., Xu J.

Materials Science Poland

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2010

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Vol. 28, No. 1

273--280

EN

Ti, Al co-doped ZnO thin films have been fabricated by radio frequency magnetron sputtering and post-vacuum-annealing techniques on glass substrates. For annealing temperatures below 723 K, the room temperature resistivity of these films was found to decrease as the annealing temperature increased. The lowest resistivity (6.75×10-4 ?ocm), indicating metal-like conductivity, was found at 723 K. The post-annealing temperature dependent on the resistivity of these films also showed a metal - semiconductor transition at 723 K. It was also found a growth orientation transition of these films from (002) to (100) with the annealing temperature up to 773 K.

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Synthesis, Crystal Structure and DNA Binding Studies of Bis(piperidinium)bis-(N,N,N',N'-tetramethylethylenediammonium) Decavanadate(V) Tetrahydrate

Jiang M., Li Y. -T., Wu Z. -Y., Yan C. -W.

Polish Journal of Chemistry

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2009

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Vol. 83, nr 11

1849-1858

EN

A new decavanadate compound consisting of one decavanadate polyanion [V10O28]6–, two protonated piperidinium cations [C5H12N]+, two doubly protonated N,N,N',N'- tetramethylethylenediammonium cat ions [C6N2H18]2+ and four lattice water molecules, namely, [(C5H12N)2][(C6N2H18)2][V10O28]×4H2O, has been synthesized and characterized by spectroscopic (IR, UV-vis and ESR) studies and single-crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/n and Z = 2, with a = 11.1267(18) capital A, ring, b = 16.854(3) capital A, ring, c = 12.973(2) capital A, ring and beta = 95.426(2)°. The cat ions, an ions and lattice water molecules are assembled by hydrogen bonds, forming a three-dimensional supramolecular architecture. The DNA-binding property of the compound was preliminarily investigated by using fluorescence spectrum, and the results indicating that the interaction mode between the compound and herring sperm DNA (HS-DNA) might be groove binding with the quenching constant of 1.20×104. To the best of our knowledge, this is the first report about the DNA-binding study of decavanadate compounds.

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Synthesis, Crystal Structure and DNA Binding Studies of a New Binuclear Cobalt(III) Complex Bridged Both by mi-Peroxo and mi-Hydroxyl Groups

Jiang M., Li Y. T., Wu Z. Y., Peng W. B., Li Q. L.

Polish Journal of Chemistry

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2009

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Vol. 83, nr 3

349-361

EN

A new binuclear cobalt(III) complex bridged both by mi-peroxo and mi-hydroxyl groups, and end-capped with 4,4 -dimethyl-2,2 -bipyridine (Me2bpy), namely, [Co2( -O2)( -OH)(Me2bpy)4](ClO4)3, has been synthesized and characterized by elemental analysis, IR, UV and single-Crystal X-ray diffraction. It crystallizes in the monoclinic system, space group P21/c and Z = 4, with a = 24.148(5) capital A, b = 10.628(2) capital A, c = 16.306(3) ?, and b = 90.74(3)°. The single crystal X-ray analysis reveals that the complex is composed of three per chlorate anions and a binuclear cobalt(III) cation, in which the cobalt(III) atoms are bridged both by hydroxyl and peroxo groups. Each cobalt(III) atom exhibits an octahedral geometry. A three-dimensional supramolecular arrangement in the crystal is generated by non-classical hydrogen bonds. The DNA-Binding properties of the complex were explored by using absorption and emission spectra and electrochemical methods. The result suggests that the binuclear cobalt(III) complex interacts with herring sperm DNA (HS-DNA) in the mode of intercalation with the intrinsic binding constant of 1.1×103 M-1.