Wyniki wyszukiwania - AGRO

1

China’s dilemma on controlling urban sprawl: planning regulations, evaluation, and prospects for revision

100%

Wang J.

Polish Journal of Environmental Studies

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2013

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tom 22

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nr 3

This paper outlines a brief history of Chinese urban policies during the last half century, in particular describing the ‘State Planning Regulations’ that aim to control urban expansion. But evidence from data analysis on land occupation rates suggests the regulations did not achieve their expected outcomes. In order to reveal the problems, discussions not only about the regulations themselves but also of the contradiction between central and local authorities are interpreted. The core issue is that local authorities need to purchase more land to accommodate rapid urbanization and benefit from land releasing, while the central government is more concerned with sustainability.

2

Spatial-temporal distribution characteristics and driving mechanism of green total factor productivity in China’s logistics industry

64%

Li M., Wang J.

Polish Journal of Environmental Studies

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2021

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tom 30

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nr 1

3

The environment, energy and economic impacts of carbon tax and indirect tax in the coal industry

64%

Wang J., Zhao C.

Polish Journal of Environmental Studies

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2019

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tom 28

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nr 5

The CO₂ emissions from China’s coal consumption account for 14.3% of the world’s CO₂ emissions. The taxation of China’s coal industry affects the progress of world emissions reduction to some extent. This paper establishes six countermeasure scenarios with different tax systems considering carbon tax and indirect tax, then constructs a dynamic recursive computable general equilibrium model to simulate the tax system changes of the coal industry. It turns out that in both rural and urban populations, coal consumption is more sensitive to the carbon tax and indirect tax compared with the consumption of other commodities. The reduction effect of increasing tax will grow and social reduction cost will be reduced over time. Increasing the coal industry tax can reduce CO₂ emissions significantly and will suffer relatively less GDP loss, for example increasing 20% of indirect tax on the coal industry will lead to 3.65 billion tons of CO₂ reduction during 2018-2030, accounting for 10.05% of 2015 world CO₂ emissions. We found that increasing taxes can improve all industries’ energy efficiency, which reflects on the powerful role of the coal industry in guiding the market to reducing CO₂ emissions. Finally, these results strongly recommend that China should increase indirect tax as quickly as possible to reach the long-term interests as soon as possible.

4

IGFBP7 aggravates sepsis-induced acute lung injury by activating the ERK1/2 pathway

64%

Xu Q., Wang J.

Folia Histochemica et Cytobiologica

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2020

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tom 58

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nr 4

5

Comparison of the effects of Chinese herbs, probiotics and prebiotics with those of antibiotics in diets on the performance of meat ducks

64%

Wang J., Zhou H.

Journal of Animal and Feed Sciences

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2007

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tom 16

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nr 1

96-103

6

Effects of CO2 fumigation and nitrogen addition on soil respiration in a wetland ecosystem: experimental approach with top open chambers

54%

Wang J., Fu X., Wang J., Zhong H., Zhang R., Ni H.

Polish Journal of Ecology

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2018

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tom 66

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nr 2

Soil respiration plays a crucial role in global carbon cycling of terrestrial ecosystems. Changes in atmospheric CO₂ and nitrogen (N) addition across the globe are likely to affect soil respiration. However, the effects of elevated CO₂, and N addition on soil respiration are not fully understood especially in wetland ecosystems. To evaluate the effects of atmospheric CO₂ and N availability on soil respiration, a paired, nested manipulative in situ experiment was performed, using CO₂ fumigation within Open-Top Chambers as the primary factor, and N (as NH₄NO₃) as the secondary factor in a temperate wetland in northeastern China in 2010 and 2011. CO₂ fumigation significantly enhanced soil respiration, according to repeated-measures ANOVA, and the stimulatory effect of CO₂ fumigation on soil respiration was sustained during the whole experimental period regardless of N addition. However, the positive soil respiration effect of N addition alone weakened over time. Moreover, there was a significant interaction between CO₂ fumigation and N addition. Soil temperature explained 50–66% of the variation in soil respiration. Moreover, soil respiration was positively correlated with the root N content and litter decomposition rate. The results suggested that elevated CO₂ concentrations will accelerate soil respiration and ecosystem carbon cycling, thus, limiting soil carbon sequestration, especially when coupled with increasing N deposition.

7

Gene expression and DNA methylation alterations in chemically induced male sterility anthers in wheat (Triticum aestivum L.)

54%

Ba Q., Zhang G., Wang J., Niu N., Ma S., Wang J.

Acta Physiologiae Plantarum

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2014

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tom 36

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nr 02

DNA methylation plays an important role in gene expression regulation during biological development in plants. To explore the mechanism of chemically induced male sterility (CIMS) in wheat, using cDNA-amplified fragment length polymorphism (cDNA-AFLP) and methylation-sensitive amplification polymorphism (MSAP) approaches, 6.66 and 3.42 % of the sequences showed changes in gene expression and DNA methylation in 1376-CIMS as compared to its fertility line 1376. We sequenced 54 fragments that differed in cDNA-AFLP and 26 DNA fragments which differentially displayed in MSAP comparisons of CIMS and 1376. Our results provided evidences for genome-wide changes in gene expression and DNA methylation occurring in the development of the 1376-CIMS system induced by chemical hybridizing agent SQ-1, and its counterpart fertility line 1376. Moreover, this study contributed to the elucidation of CIMS effects on responses of transcriptome and methylome in the development of the anther.

8

Treatments to control urban river pollution in water source city of south to north water diversion project

54%

Deng K., Wang J., Wang J., Chenxi W., Zhang C., Wang X.

Polish Journal of Environmental Studies

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2015

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tom 24

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nr 2

The city of Shiyan in Hubei Province is the largest city in the source of the South to North Water Diversion Project in China. The water of this project will be sent to Beijing, so water quality is very important. In the city district there is a 100 km river along a cross-strait with high-rise buildings, dense population, and converged sewage straight flow to the river. In our paper, the design of the “Ming change dark” river closure project can fundamentally solve the city environmental pollution problems, improve the source water quality without any menace from the “rears,” and make Shiyan's green economy grow rapidly. On the other hand, this “city agriculture” new thinking will completely change the serious situation of arable land area, which is decreasing year by year in the world. The exploitation of the riverway is an opportunity for Shiyan. It is a green project meaningful to the city’s continuing development.

9

Characteristics of drought disaster-causing factor anomalies in Southwestern and Southern China against the background of global warming

54%

Wang J., Wang S., Zhang Q., Li Y., Wang J., Zhang J.

Polish Journal of Environmental Studies

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2015

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tom 24

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nr 5

In this study, taking drought disaster-causing factors like precipitation, temperature, reference evapotranspiration, and the degree of drought severity based on the drought index as study objects, the characteristics of these above elements against the background of global warming were analyzed by using the method of climate statistics. The data include a variety of climate observations of 129 meteorological stations in southwestern and southern China from 1961 to 2012. The results show that over the past half century sustained temperature increase has been presented in the study area against the background of global warming. However, there is still a sharp warming point (mutation point) of temperature time series that occurred in 1994 during 1961 to 2012 according to the Mann-Kendal test. In other words, the past half century could be divided into two episodes with the year 1994 as the boundary: the first period (i.e. the period before significant temperature rise) from 1961 to 1994, and the second period (i.e. the period after significant temperature rise) from 1995 to 2012. In order to highlight the effects that result from obvious warming, a comparison of the above factors between the two episodes and the trend of these factors in the two episodes are analyzed. This shows that, during the period after significant temperature rise, the study area has experienced a significant downward trend in precipitation and a decline in reference evapotranspiration, but a rise in its change trend, and more serious degree of drought severity due to the impact of less precipitation and higher temperatures.

10

Evaluating ecological vulnerability using the GIS and analytic hierarchy process (AHP) method in Yan’an, China

51%

Hou K., Li X., Wang J., Zhang J.

Polish Journal of Environmental Studies

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2016

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tom 25

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nr 2

The degraded ecosystem in the Loess Plateau region of China is very vulnerable, which has a great impact on regional sustainable development. Taking the Loess Plateau of Yan’an, Shaanxi province, China, as the study area, this study quantitatively evaluated conditions of the ecological environment. Based on natural factors, environmental factors, and socio-economic factors of Yan’an in 1997, 2004, and 2011, the dynamic changes in ecological vulnerability are analyzed with the application software for geographic information systems (GIS). The analytic hierarchy process (AHP) model was used and it contains variables for land use, soil erosion, topography, climate, vegetation, and socio-economic data. The evaluation results are divided into fi ve categories: potential, slight, light, medium, and heavy. The results show that the ecological vulnerability in the study is light level, and the ecological vulnerability index of the southern four counties is lower than that of the northern four counties. Ecological environment quality gradually improved in most areas in 1997~2011.

11

Ethylene antagonizes the inhibition of germination in Arabidopsis induced by salinity by modulating the concentration of hydrogen peroxide

51%

Lin Y., Wang J., Zu Y., Tang Z.

Acta Physiologiae Plantarum

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2012

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tom 34

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nr 5

The capacity of plants to achieve successful germination and early seedling establishment under high salinity is crucial for tolerance of plants to salt. The gaseous hormone ethylene has been implicated in modulating salt tolerance, but the detailed role of how ethylene modulates the response of early seedling establishment to salt is unclear. To better understand the role of the ethylene signal transduction pathway during germination and seedling establishment, an ethylene insensitive mutation (ein2-5) and an ethylene sensitive mutation (ctr1-1) of Arabidopsis were analyzed under saline conditions and compared with the wild type plant (Col-0) as control. High salinity (>100 mM NaCl) inhibited and delayed germination. These effects were more severe in the ethylene insensitive mutants (ein2-5) and less severe in the constitutive ethylene sensitive plants (ctr1-1) compared with Col-0 plants. Addition of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) or inhibitors of ethylene action implied that ethylene was essential for early seedling establishment under normal and saline conditions. Salt stress increased the endogenous concentration of hydrogen peroxide (H₂O₂) in germinating seeds and ACC reduced its concentration. Our results suggest that ethylene promotes germination under salinity by modulating the endogenous concentration of H₂O₂ in germinating seeds. These findings demonstrate that ethylene is involved in regulating germination as an initiator of the process rather than consequence, and that ethylene promotes germination by modulating the endogenous concentration of H₂O₂ in germinating seeds under salinity.

12

Comparative shotgun proteomic profiles for identification of differentially expressed proteins in response to topping in Nicotiana tabacum leaves

51%

Yang H., Su F., Wang J., Shi H.

Acta Physiologiae Plantarum

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2017

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tom 39

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nr 01

13

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Microwave irradiation enhances the germination rate of tartary buckwheat and content of some compounds in its sprouts

51%

Wang S., Wang J., Guo Y.

Polish Journal of Food and Nutrition Sciences

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2018

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tom 68

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nr 3

Tartary buckwheat (Fagopyrum tataricum) seeds were irradiated with microwaves at various power levels of 200, 400, 600 and 800 W for 10 or 30 s. The irradiated grains were germinated for 3, 5, and 7 days and harvested. The germination rate of the tartary buckwheat seeds and contents of some compounds in the sprouts were investigated. The results showed that the exposure to 600 W microwaves for 10 s resulted in the highest fi nal germination rate after 7 days of germination, which was 2 times that of the control. The exposure of seeds to 800 W for 30 s showed the lowest germination rate (approximately 10%), which decreased by 87% compared with the control (p<0.05). The exposure at 600 W for 30 s stimulated the total flavones content, reduced the sugar and soluble protein contents, and increased the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. The highest free amino acid content (11 mg/g) was observed in 5-day sprouts exposed to 800 W for 10 s. Moreover, the microwave treatment had a positive effect on the catalase (CAT) and superoxide dismutase (SOD) activity.

14

The effects of bamboo leaf extract on growth performance, antioxidant traits, immune function and lipid metabolism of weaning piglets

51%

Zhang J., Wang J., Zhang L., Wang T.

Journal of Animal and Feed Sciences

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2013

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tom 22

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nr 3

The aim of this study was to evaluate the effects of dietary supplementation of bamboo leaf extract (BLE) on the growth performance, antioxidant traits, immune function, and lipid metabolism of weaning piglets. After weaning at 21 days, two hundred and forty healthy piglets (Large White × Landrance) were randomly assigned to 4 treatments with 6 pens and 10 piglets per pen. The control group (Ctr) received a maize-soyabean based diet, and the test groups received the control diet plus 0.5%, 1%, or 2% (w/w) BLE, respectively. The experiment was carried out for 5 weeks. At the end of it, average daily feed intake in the 1% BLE group was decreased (p < 0.05). Plasma concentrations of malondialdehyde were decreased with supplementation of 1% and 2% BLE. Immunoglobulin G concentrations and lysozyme activity in plasma were significantly increased in piglets supplemented with BLE. Diets with 1% and 2% BLE increased (p < 0.05) plasma concentrations of low density lipoprotein-cholesterol and reduced (P < 0.01) high density lipoprotein-cholesterol levels. Higher triglyceride concentrations were observed in the 0.5% (P < 0.01) and 2% (p < 0.05) BLE groups. In conclusion, these novel findings demonstrate that supplementation of BLE to the diet improved the antioxidant activity, immune function, and lipid metabolism of weaning piglets.

15

Analysis of the influence mechanism of energy-related carbon emissions with a novel hybrid support vector machine algorithm in Hebei, China

51%

Wang J., Yang F., Zhang X.

Polish Journal of Environmental Studies

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2019

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tom 28

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nr 5

The Beijing-Tianjin-Hebei Region (BTH) as a national strategic highland attracts attention with its haze problem. In particular, Hebei is a major emitter of carbon emissions in BTH. The establishment of the Xiong’an New District in Hebei, known as the “Millennium plan,” faces complex and diverse development in the future, so the carbon emission prediction and influence mechanism are of great significance. This paper has made two improvements to the particle swarm optimization algorithm (PSO), then the improved algorithm is used to optimize parameters of the traditional support vector machine (SVM). Therefore, a new model, IPSO-SVM, is established. This paper uses the STIRPAT model to determine the impact factors, through 64 predict scenarios of 2017-2020 to reveal that economic growth is the most important factor of carbon emissions in Hebei, followed by resident population, industrial structure, urbanization level, energy structure, and technical level. In the case of positive economic development, the contribution of technology to carbon reduction will increase. Based on the “new normal,” Hebei ought to develop sustainable urbanization and emphasis on the role of technology in low-carbon development to control carbon emissions.

16

Removal of sulfa antibiotics in low-temperature water using scoria

51%

Li R., Zhang Y., Wang J., Qian H.

Polish Journal of Environmental Studies

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2017

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tom 26

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nr 5

Scoria, a natural silicate mineral, was used for the adsorption removal of antibiotics from water. The kinetics of adsorption were studied during the experiment and the results showed that the adsorption of three antibiotics (sulfathiazole (ST), sulfamethazine (SM2), and sulfamethoxazole (SMX)) by scoria fit the Freundlich isotherm well. Additionally, batch experiment data were fitted using pseudo first-order and pseudo second-order equations, and the calculated capacities for the three antibiotics were 0.7688, 0.7242, and 0.6341mg/g, respectively. Moreover, the effects of various water chemistry factors on the removal of the three antibiotics were explored, and Fe²⁺ and Mg²⁺ were found to promote the adsorption. The alkalinity and hardness of water both had significant effects on absorption of the three antibiotics by scoria. The carbon content of scoria increased significantly, and energy dispersion spectrum analysis showed that it could remove three sulfa antibiotics from low-temperature (10°C) water effectively. Overall, scoria is an effective natural material for purifying low-temperature water polluted with ST, SM2, and SMX.

17

Differences among influencing factors of China’s provincial energy intensity: empirical analysis from a geographically weighted regression model

51%

Wang J., Chen K., Song X.

Polish Journal of Environmental Studies

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2020

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tom 29

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nr 4

18

Cortical localization of alpha- and gamma-tubulin and the assembly of cortical microtubule cytoskeleton in hypotrichous ciliate Euplotes eurystomus

51%

Sheng X., Sheng Y., Liu Y., Wang J.

Acta Protozoologica

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2017

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tom 56

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nr 3

19

Knockdown of Sucla2 decreases the viability of mouse spermatocytes by inducing apoptosis through injury of the mitochondrial function of cells

51%

Huang S., Wang J., Wang L.

Folia Histochemica et Cytobiologica

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2016

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tom 54

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nr 3

20

Morphology and morphogenesis of a Chinese population of the soil urostylid ciliate, Extraholosticha sylvatica (Foissner, 1982) Li et al., 2017 (Ciliophora, Hypotrichia)

51%

Li J., Wen K., Zhu E., Wang J.

Acta Protozoologica

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2019

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tom 58

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nr 4

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