Wyniki wyszukiwania - Biblioteka Nauki

1

Visible light-driven photocatalytic degradation of 1,2,4-trichlorobenzene with synthesized Co3O4 photocatalyst

100%

Wang C. , Ren B.

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tom 27

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nr 5

EN

A cubic crystal form Co₃O₄ was synthesized using the sol-gel method and applied as catalyst in the visible light-driven photocatalytic degradation of 1,2,4-trichlorobenzene (1,2,,4-TCB). 1,2,4-TCB removal efficiency initially increased and was followed by a gentle decrease as the Co₃O₄ dosage increased, with the optimal dosage of 2.0 g/L. The degradation rate changed positively with light intensity and reaction temperature. However, pH exerted only a slight effect on 1,2,4-TCB degradation. Strong acidic and basic conditions were conducive to the photocatalytic degradation of 1,2,4-TCB. The optimal parameters for the photocatalytic degradation of 1,2,4-TCB were found at a Co₃O4 dosage of 2.0 g/L, 350 W of illumination intensity, initial 1,2,4-TCB concentration of 7.5 mg/L at 30ºC, with 1,2,4-TCB removal efficiency of 90.13% after 6.0 hours photocatalytic degradation. The Co₃O₄ synthesized in the study with high-purity and stable properties guaranteed its high catalytic activity and stability. The possible mechanisms of visible light-driven photocatalytic degradation of 1,2,4-TCB with synthesized Co₃O₄ photocatalyst were also proposed.

2

Response of leaf functional traits of Cerasus yedoensis (Mats.) Yü li to serious insect attack

80%

Wang C. , Liu J. , Xiao H. , Du D.

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2016

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tom 25

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nr 1

EN

The morphological features of plants, such as leaf functional traits, are adaptations that enable them to live under different environmental conditions. Thus, leaf functional traits can provide a link between various environmental factors and leaf functions. This study aims to gain insights into the differences in leaf functional traits between healthy (no insect attack) and damaged (serious insect attack) Cerasus yedoensis Yü li. Petiole diameter, leaf length, leaf thickness, ratio of leaf length to petiole length, leaf shape index, and single leaf wet and dry weight of damaged leaves were significantly higher than those of healthy leaves, but lower for leaf moisture and specific leaf area (SLA). Plasticity indices of petiole diameter, petiole length, leaf length, leaf width, and leaf shape index of healthy leaves were higher than those of damaged leaes, but contrary for the plasticity indices of the ratio of leaf length to petiole length, leaf moisture, and SLA of healthy leaves. SLA was positively correlated with leaf moisture but negatively correlated with petiole diameter, leaf length, leaf thickness, ratio of leaf legth to petiole length, leaf shape index, and single leaf wet and dry weight. After serious insect attack, damaged C. yedoensis contained increased quantities of material investment per unit area to exhibit a more efficient anti-herbivore defense; thus, leaf moisture and SLA were decreased, but leaf thickness, and single leaf wet and dry weight were increased. Meanwhile, damaged leaves also were more slender and invested more biomass to the lamina than to the petiole.

3

Description of a new brackish water ciliate, Uronychia xinjiangensis n. sp. (Ciliophora, Euplotida) based on morphology, morphogenesis and molecular phylogeny

80%

Shi X. , Liu G. , Wang C. , Hu X.

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nr 4

4

Influence of stearic acid on the structure and rheological behavior of injection-molded ZTA suspensions

80%

Lin C. , Wang B. , Cheng Y. , Wang C.

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tom Vol. 31, No. 1

36-42

EN

The zirconia-toughened-alumina (ZTA) composite powder was exposed to a prior ball milling treatment with a small amount of stearic acid (SA) before the traditional blending process. The effect of different amounts of stearic acid on surface properties of the powder, the particle size distribution of the powder, and the rheological properties of the suspension were systematically studied within the design of experiments. Fourier transformation infrared spectroscopy (FTIR) analysis was used to prove the chemical interaction between the stearic acid and the ZTA powder. The effects of SA content on the particle sizes and their distribution were carefully examined. Rheological properties such as viscosity, yield stress, and power law exponent of the suspensions were determined within a temperature range of 140-170 °C. The optimal content of SA to improve the properties of the suspensions was found to be 3 wt.%.

5

Evolution of hierarchical structure and spatial pattern of coastal cities in China – based on the data of distribution of marine-related enterprises

80%

Wang L. , Xiao W. , Wang C.

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2017

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tom S 3

58--64

EN

In this paper, a comprehensive research of the evolution of the hierarchical structure and spatial pattern of coastal cities in China was conducted based on the data of distribution of the headquarters and subsidiaries of marine-related enterprises in 1995, 2005 and 2015 using the city network research method proposed by Taylor. The results of the empirical research showed: China’s coastal city network had an obvious hierarchical characteristics of “national coastal cityregional coastal city-sub-regional coastal city-local coastal city”, in the 20 years of development process, the hierarchies of coastal cities in China showed a hierarchical progressive evolution; in past 20 years, the spatial pattern and network structure of coastal cities in China tended to be complete, and the city network was more uniform, forming a “three tiers and three urban agglomerations” network structure; the strength of connection among the cities was obviously strengthened, and the efficiency of urban spatial connection was improved overall.

6

Urbanization effect on energy - related carbon emissions in Jiangsu Province from the perspective of resident consumption

80%

Zhang X. , Zhao Y. , Xu X. , Wang C.

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nr 4

EN

Controlling carbon emissions without impairing urbanization and economic development highlights the necessity of researching energy-related carbon emissions. Urban areas have become the main source of energy consumption and carbon emissions. This paper has developed a modified version of the Kaya identity, which incorporates urbanization and resident consumption, to analyze urbanization effect on carbon emissions in Jiangsu Province. Then, the Kuznets curve theory was introduced to estimate the inflection point of the marginal urbanization effect. The results indicated that the urbanization effect was still an important factor that influences total carbon emissions. The marginal urbanization effect will still increase until the urbanization rate reaches 78.94%. Therefore, Jiangsu should also pay attention to the urbanization effect even though it may increase slowly or decrease, and the results of this paper on marginal urbanization effect make it clear that controlling the carbon emissions without the expense of urbanization growth and economic development is still a big challenge for Jiangsu Province. We have proposed some policy recommendations, which include paying attention to the quality of development of urbanization, adjusting the industrial structure, making changes to lifestyles, and so on.

7

Research on deep joints and lode extension based on digital borehole camera technology

80%

Han Z. , Wang C. , Zhu H.

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nr Special Issue S1

EN

Structure characteristics of rock and orebody in deep borehole are obtained by borehole camera technology. By investigating on the joints and fissures in Shapinggou molybdenum mine, the dominant orientation of joint fissure in surrounding rock and orebody were statistically analyzed. Applying the theory of metallogeny and geostatistics, the relationship between joint fissure and lode’s extension direction is explored. The results indicate that joints in the orebody of ZK61borehole have only one dominant orientation SE126° <68°, however, the dominant orientations of joints in surrounding rock were SE118° <73°, SW225°<70° and SE122° <65°, NE79° <63°. Then a preliminary conclusion showed that the lode’s extension direction is specific and it is influenced by joints of surrounding rock. Results of other boreholes are generally agree well with the ZK61, suggesting the analysis reliably reflects the lode’s extension properties and the conclusion presents important references for deep ore prospecting

8

Effects of iron oxide nanoparticles on the mineral composition and growth of soybean (Glycine max L.) plants

80%

Yang X. , Alidoust D. , Wang C.

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nr 08

9

An application of 24Model to analyse capsizing of the Eastern Star ferry

80%

Suo X. , Fu G. , Wang C. , Jia Q.

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2017

|

tom S 3

116--122

EN

In the present study, the Eastern Star ferry accident was analyzed via 24Model. 24Model, as an accident causation model based on system thinking, holds that all causations of the accident are hazards and all hazards in the system need to be identified and comprehensively controlled in accident prevention. The result showed that five factors were the main causes of the accident. First, the direct causes: bad weather, the bad condition of the hull and the unsafe acts of the captain. Second, the indirect cause: the lack of safety awareness and safety knowledge of both the captain and the company’s senior management. Third, there were loopholes in safety management system, including the training, supervision and execution of the company. Forth, the root cause: the company didn’t establish a good safety culture. Last, the external causes: the severe market pressure, excessive regulatory authorities with puzzled relations and responsibilities—seriously hindered effective supervision. In order to prevent this kind of accident and to secure shipping system, the shipping companies and the relevant regulatory units should draw lessons from the five factors mentioned above, and take measures to identify and control those hazards.

10

Evolution of hierarchical structure and spatial pattern of coastal cities in China - based on the data of distribution of marine-related enterprises

80%

Wang L. , Xiao W. , Wang C.

|

nr Special Issue S3

EN

In this paper, a comprehensive research of the evolution of the hierarchical structure and spatial pattern of coastal cities in China was conducted based on the data of distribution of the headquarters and subsidiaries of marine-related enterprises in 1995, 2005 and 2015 using the city network research method proposed by Taylor. The results of the empirical research showed: China’s coastal city network had an obvious hierarchical characteristics of “national coastal cityregional coastal city-sub-regional coastal city-local coastal city”, in the 20 years of development process, the hierarchies of coastal cities in China showed a hierarchical progressive evolution; in past 20 years, the spatial pattern and network structure of coastal cities in China tended to be complete, and the city network was more uniform, forming a “three tiers and three urban agglomerations” network structure; the strength of connection among the cities was obviously strengthened, and the efficiency of urban spatial connection was improved overall

11

Association between alpha-adducin gene polymorphism [Gly460Trp] and genetic predisposition to salt sensitivity: a meta-analysis

80%

Wang R. , Zhong B. , Liu Y. , Wang C.

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tom 51

|

nr 1

87-94

EN

Linkage and association studies suggested the relationship between α-adducin polymorphism (Gly460Trp; rs4961) and genetic susceptibility to salt-sensitivity. However, the currently available results were inconsistent. This study aimed to define quantitatively the association between salt-sensitivity and α-adducin Gly460Trp polymorphism in all published case-control studies. Publications from PubMed and other databases were retrieved. The major inclusion criteria were: (1) case-control design; (2) salt-sensitivity confirmed by sodium loading tests, and (3) the distribution of genotypes given in detail. Seven case-control studies fulfilled the inclusion criteria. In total they involved 820 subjects (454 salt-sensitive and 366 non-salt-sensitive). The meta-analysis shows that Gly460Trp polymorphism in general is not significantly associated with salt-sensitivity [OR (95%CI): 1.40 (0.96,2.04), P = 0.08]. Subgroup analysis showed that the association is statistically significant in Asian people [OR (95%CI): 1.33 (1.06, 1.69), P = 0.02] but not in Caucasian people [OR (95%CI): 1.98 (0.57, 6.92), P = 0.28]. This indicates that blood pressure response to sodium varies between ethnical groups. More studies based on a larger population are required to evaluate further the role of α-adducin Gly460Trp polymorphism in salt-sensitive hypertension.

12

An application of 24Model to analyse capsizing of the Eastern Star ferry

80%

Suo X. , Fu G. , Wang C. , Jia Q.

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nr Special Issue S3

XX

In the present study, the Eastern Star ferry accident was analyzed via 24Model. 24Model, as an accident causation model based on system thinking, holds that all causations of the accident are hazards and all hazards in the system need to be identified and comprehensively controlled in accident prevention. The result showed that five factors were the main causes of the accident. First, the direct causes: bad weather, the bad condition of the hull and the unsafe acts of the captain. Second, the indirect cause: the lack of safety awareness and safety knowledge of both the captain and the company’s senior management. Third, there were loopholes in safety management system, including the training, supervision and execution of the company. Forth, the root cause: the company didn’t establish a good safety culture. Last, the external causes: the severe market pressure, excessive regulatory authorities with puzzled relations and responsibilities—seriously hindered effective supervision. In order to prevent this kind of accident and to secure shipping system, the shipping companies and the relevant regulatory units should draw lessons from the five factors mentioned above, and take measures to identify and control those hazards

13

Scale-dependent environmental control of mesozooplankton community structure in three aquaculture subtropical bays of China

80%

Sun D. , Liu Z. , Wang C.

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2016

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tom 58

|

nr 2

14

Impact of Protective Relays on Voltage Sag Index

80%

Gao X. , Liu Y. , Wang C.

|

2013

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tom R. 89, nr 5

59-62

EN

This paper provides the probability-assessment analysis on the characteristic value of the voltage sag by using Monte Carlo stochastic modelling method to stimulate the randomness of the short circuit fault. Furthermore, this article simulates the influence of the protection devices on the voltage sag to ensure the authenticity and the referential reliability. A system with inverse-time protection devices equipped on each lines which could coordinate together are designed to cut off the short-circuit fault. The voltage sag of the designed system is evaluated by the pre-and post system average RMS variation frequency index, and the voltage sag index is compared with the ITIC curves.The simulation results demonstrated that the inverse-curve relay protection equipments are well-coordinated, and the severity and the range of the voltage sag are influenced by the cooperation of the equipped inverse time protection devices.

PL

W artykule przedstawiono metodę szacowania prawdopodobieństwa wystąpienia zapadu napięcia na podstawie analizy jego charakterystycznych parametrów zamodelowanych metodą Monte Carlo. Ponad to, w celu weryfikacji skuteczności, dokonano symulacji wpływu urządzeń ochronnych na zapady napięcia. Zaprojektowano także system z urządzeniami umożliwiającymi odizolowanie zwarcia w obwodzie od reszty sieci. Wyznaczono współczynnik częstotliwościowy zmienności wartości średniej RMS zapadów napięcia w proponowanym układzie, który następnie porównano z krzywymi ITIC. Przeprowadzone badania symulacyjne potwierdziły skuteczność i szybkość działania systemu.

15

Influence of microinjections of D,L-homocysteic acid into the botzinger complex area on the cough reflex in the cat

71%

Poliacek I. , Corrie L. W. , Rose M. J. , Wang C. , Bolser D. C.

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2008

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tom 59

|

nr 6

585-596

16

A novel DOPO-g-KH550 modification wood fibers and its effects on the properties of composite phenolic foams

71%

Ma Y. , Geng X. , Zhang X. , Wang C. , Chu F.

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tom Vol. 20, nr 2

47--53

EN

A novel 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) graft γ-amino propyl triethoxy silane (KH550) was synthesized and introduced on the surface of wood fi ber. Finally DOPO-g-KH550 treated wood fi ber (DKTWF) was used to prepare DKTWF composite phenolic foams (DKTWFCPF). The structures of DOPO-g- KH550 was acknowledged by Fourier transform infrared (FT-IR) and nuclear magnetic resonance (1 H-NMR). The structures of DKTWF were confirmed by FT-IR. Compared with wood fi ber, the diffraction peaks’ position was basically unchanged, but the crystallinity was slightly increased and thermal stability were dramatically improved, T5% and Tmax increased by 21.9° and 36.1° respectively. But the char yield (800°) was slightly reduced. With the dosage of DKWF, there were different degrees of improvement including the mechanical properties, flame retardancy and microstructure of DKTWFCPF. Comprehensive analysis, the interfacial compatibility was signifi cantly improved between DKTWF and phenolic resin, and the suitable content of DKTWF was 4%.

17

Structural decomposition analysis of driving factors for energy use before and after the global financial crisis: evidence from top energy consumer Guangdong Province in China

71%

Wang C. , Wang F. , Wen B. , Ye Y. , Zhang H.

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tom 28

|

nr 5

EN

Understanding drivers for energy consumption is important for economic and environmentally sustainable development. To explore this issue, the SDA (structural decomposition analysis) method based on input-output theory was used to analyze the influencing mechanism of energy consumption in one of the top energy consumers, Guangdong Province in China, during 2002 to 2012. We divided the process into 2 stages: before and after the global financial crisis. The main conclusions are as follows: 1) Economic activity and population size are the main driving factors for the increase in energy consumption, while energy consumption intensity is the main factor restraining the increment, and the effects of final demand structure on energy consumption transformed from positive before the global financial crisis to negative after the global financial crisis. 2) Analysis of allocation of energy consumption changes caused by final demands shows that international and domestic trade had significant effects on changes in energy consumption. Although energy consumption embodied in international exports decreased after the global financial crisis, it is still the most significant important driver for the increments. Guangdong is a net exporter of embodied energy through international trade, while its energy-saving achievement is partly due to embodied energy transfers via China’s domestic trade.

18

Root radial oxygen loss and the effects on rhizosphere microarea of two submerged plants

71%

Tian C. , Wang C. , Tian Y. , Wu X. , Xiao B.

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nr 4

EN

Radial oxygen loss (ROL) has been suggested to be a major process to protect plants exposed to the anaerobic by-products of soil anaerobiosis. The aim of the present study was to test the effects of root ROL from two submerged plants (Hydrilla verticillata and Vallisneria spiralis) on the rhizosphere oxygen profile and rhizosphere microarea. Phospholipid fatty acids (PLFAs) of sediment samples were used to characterize and quantify the microbial community. The results showed clearly that there were significant differences between the two plants in radial oxygen loss, which affected rhizosphere physicochemical parameters and the microbial community. Rhizosphere total biomass, bacteria, gram-positive bacteria, actinomycetes, and microbial diversity of V. spiralis were significantly higher than those of H. verticillata. The present study highlights root ROL as a key parameter affecting the microbial community of the rhizosphere microarea.

19

Reorganization of the visual cortex following monocular circumscribed retinal lesions: update of Hebbian learning

71%

Waleszczyk W. , Wang C. , Bardy C. , Calford M. M. , Dreher B.

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nr 3

EN

Following circumscribed monocular retinal lesions most cells located in the lesion projection zone (LPZ) in the cat’s primary visual cortices remain binocular but their receptive fi elds (RFs) revealed by stimulation via the lesioned eye, are displaced into proximity of the lesion. The process of topographic reorganization (adaptive learning) of the visual cortex, is based on spike timing-dependent plasticity rather than the classical Hebbian rules [Young et al. (2007) Nat Neurosci 10: 887–895]. The contrast sensitivities of the classical RFs of LPZ neurons revealed by stimulation via the lesioned eye are signifi cantly lower, while the suppresive infl uences of their “silent”, extra-classical RFs are weaker than those of their counterparts revealed by stimulation via non-lesioned eye. Other properties (e.g. orientation, spatial and temporal frequency preferences) however match well the properties of RFs revealed by stimulation via non-lesioned eye. These similarities are presumably visual experience-dependent, that is, they are related to the fact that in the post-lesion period (from adolescence to maturity), the neuronal activities originating from each retina are correlated by effectively synchronized exposure to the same visual stimuli. These results are consistent with the hypothesis that the ectopic RFs are based on enhancement of the synaptic effi cacy of long-range, excitatory intracortical connections. Financial support: Nencki Institute, Poland; NHMRC and ARC grants, Australia.

20

X Preparation and Characterization of Carbon-Based Composite Nanofibers for Supercapacitor

71%

Gao D. , Wang L. , Wang C. , Chang Y. , Ma P.

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tom Vol. 17, no. 2

129--134

EN

Polyacrylonitrile (PAN)/Co(OAc)2/carbon nanotubes (CNTs) composite nanofibers were fabricated via electrospinning with N,N-dimethylformamide (DMF) as solvent, and by carbonization and activation of the above precursor nanofibers, porous carbon composite nanofibers were successfully obtained. Scanning electron microscope, X-ray diffraction, ASAP 2020, and Solartron 1470 were used to characterize the surface morphology, the phase composition, specific surface area, and electrochemical property of the nanofibers, respectively. The result showed that some of the fibers were broken after sintering, and the surface area and pore volume of the porous C/Cu/CNTs were 771 m2/g and 0.347 cm3/g, respectively. The specific capacitance of the composite nanofibers reached up to 210 F/g at the current density of 1.0 A/g. Its energy density and power density were 3.1 Wh/Kg and 2,337 W/Kg, respectively, at the current of 0.5 and 5 mA.