Wyniki wyszukiwania

1

Use of discrimination analysis on NIRS to detect meat-and-bone meal content in ruminant concentrates

100%

Yang Z., Han L., Li Q., Fan X.

Journal of Animal and Feed Sciences. Supplement

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2007

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tom 16

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nr 2

2

Oligonucleotides replacing the roles of repetitive sequences pAs1, pSc119.2, pTa-535, pTa71, CCS1, and pAWRC.1 for FISH analysis

100%

Tang Z., Yang Z., Fu S.

Journal of Applied Genetics

|

2014

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tom 55

|

nr 3

3

Assessment of heavy metals contamination in near-surface dust

100%

Yang Z., Ge H., Lu W., Long Y.

Polish Journal of Environmental Studies

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2015

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tom 24

|

nr 4

As a result of the continuous urbanization and industrialization in China over the last few decades, heavy metals have been continuously emitted into urban environments and now pose serious threats to human health. In the present study, an extensive urban near-surface dust survey was conducted in Changchun, China, to evaluate the current status of heavy metal contamination in urban dust and to identify the potential sources. A total of 232 samples were collected and the levels of Cu, Pb, Zn, Cd, Hg, As, Cr, and the major elements were then determined. The results indicated that the urban dusts were enriched with metals, particularly Cu, Cd, Zn, Pb, and Hg. Principal component analysis (PCA) was employed to identify sources of heavy metals, and the results revealed distinctly different associations among the trace metals and the major elements in the urban dusts. The concentrations of Cr and As appeared to be controlled by natural factors. Cu and Pb were mainly from vehicle emissions. Zn primarily come from traffic sources, especially vehicle tires. Additionally, Hg primarily originated from coal combustion, while Cd was mainly associated with industrial sources. A revised pollution index for each metal and a Nemerow integrated pollution index (NIPI) of the seven metals were attributed to each sampling site to assess the degree of metal contamination. The results showed that the pollution indexes (PI) of each metal are not especially high. However, a significant degree of metal pollution exists in some urban dusts in Changchun, particularly for Cu, Cd, Zn, and As. The mean value of the Nemerow integrated pollution index (NIPI) of the seven metals also indicated that urban dusts in Changchun city were classified as having moderate levels of pollution. However, it should be noted that about 11% of all samples had a NIPI value above 3, suggesting a high level of contamination by metals. These findings indicate that more attention should be paid to metal pollution of the urban dusts in Changchun in the future.

4

Emission characteristics for waste cooking oil biodiesel blend in a marine diesel propulsion engine

100%

Wu G., Jiang G., Yang Z., Huang Z.

Polish Journal of Environmental Studies

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2019

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tom 28

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nr 4

Diesel engines are widely used for propulsion on large ships, which has the undesired characteristic of generating large amounts of harmful emissions. To reduce these emissions, some alternative fuel was developed and used in a marine diesel engine. In this study, an experiment was carried out on a 6-cylinder turbocharged direct-injection marine diesel propulsion engine. A small proportion blend of biodiesel-diesel was used, aimed at exploring the emission characteristics and emission reduction mechanism for diesel propulsion engines. The results show that the high oxygen content of biodiesel blend is crucial for inhibiting the formation of particulate matter (PM) and reducing the formation of total unburned hydrocarbon (THC) and carbon monoxide (CO), which reduces the emission of harmful gases. At the same time, the number of particles (PN) has also decreased. However, the rapid burn rate of biodiesel was found to reduce brake thermal efficiency (BTE), resulting in an increase of fuel consumption and exhaust gas temperature (EGT), which can promote the formation of nitrogen oxides (NOx). More carbon dioxide (CO2) is released due to the increased fuel consumption. The emission characteristics of the biodiesel blend and diesel fuel are discussed in this work.

5

Prediction of silage digestibility by near infrared reflectance spectroscopy

100%

Liu X., Han L., Yang Z., Xu C.

Journal of Animal and Feed Sciences

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2008

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tom 17

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nr 4

6

Combustion and emissions investigation on low-speed two-stroke marine diesel engine with low sulfur diesel fuel

100%

Yang Z., Tan Q., Geng P.

Polish Maritime Research

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2019

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tom 26

|

nr 1

With the implementation and expansion of international sulfur emission control areas, effectively promoted the marine low sulfur diesel fuel (MLSDF) used in marine diesel engines. In this study, a large low-speed, two-stroke, cross-head, common rail, electronic fuel injection marine diesel engine (B&W 6S35ME-B9) was used for the study. According to diesel engine’s propulsion characteristics, experiments were launched respectively at 25%, 50%, 75%, 100% load working conditions with marine low sulfur diesel fuel to analyze the fuel consumption, combustion characteristics and emissions (NOx, CO2, CO, HC) characteristics. The results showed that: Marine diesel engine usually took fuel injection after top dead center to ensure their safety control NOx emission. From 25% to 75% load working condition, engine’s combustion timing gradually moved forward and the inflection points of pressure curve after top dead center also followed forward. While it is necessary to control pressure and reduce NOx emission by delaying fuel injection timing at 100% load. Engine’s in-cylinder pressure, temperature, and cumulative heat release were increased with load increasing. Engine’s CO2 and HC emissions were significantly reduced from 25% to 75% load, while they were increased slightly at 100% load. Moreover, the fuel consumption rate had a similar variation and the lowest was only 178 g/kW·h at 75% load of the test engine with MLSDF. HC or CO emissions at four tests’ working conditions were below 1.23 g/kW·h and the maximum difference was 0.2 or 0.4 g/kW·h respectively, which meant that combustion efficiency of the test engine with MLSDF is good. Although the proportion of NOx in exhaust gas increased with engine’s load increasing, but NOx emissions were always between 12.5 and 13.0 g/kW·h, which was less than 14.4 g/kW·h. Thus, the test engine had good emissions performance with MLSDF, which could meet current emission requirements of the International Maritime Organization

7

Lactobacillus fermentum JX306 restrain D-galactose-induced oxidative stress of mice through its antioxidant activity

88%

Zhang D., Li C., Shi R., Zhao F., Yang Z.

Polish Journal of Microbiology

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2020

|

tom 69

|

nr 2

8

Exopolysaccharides from Lactobacillus plantarum YW11 improve immune response and ameliorate inflammatory bowel disease symptoms

88%

Zhang M., Hao X., Tariq A., Zhang J., Yang Z.

Acta Biochimica Polonica

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2020

|

tom 67

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nr 4

9

Selection of reference genes for quantitative real-time PCR during flower bud development in CMS7311 of heading Chinese cabbage (Brassica rapa L. ssp. pekinensis)

88%

Xu X., Yang Z., Sun X., Zhang L., Fang Z.

Acta Physiologiae Plantarum

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2014

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tom 36

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nr 03

The accuracy of quantitative real-time PCR (qRT-PCR) depends on the stability of the reference gene used for normalization. In heading Chinese cabbage (Brassica rapa L. ssp. pekinensis), the most stable reference genes for qRT-PCR during flower bud development have not been elucidated. In this study, the statistical software geNorm was used to test eight candidate reference genes during flower bud development in male sterile (Ms) and fertile (Mf) plants. The result revealed that the stability order was Tub/GAPDH > Cyp > EF1a > U34559 > BrTip41 > Apr > 18S rRNA, Tub and GAPDH were the most stable genes [average expression stability (M) 0.614], and the combined use of six reference genes [pairwise variation (V) 0.15] was suggested to be the optimal reference gene for qRT-PCR during flower bud development. Furthermore, the expressions of BcPME31 during flower bud development normalized with the combined use of six reference genes and with GAPDH or Tub alone were compared; the various results also suggested that selection of the optimal reference gene was necessary for gene expression analysis.

10

Using graphene/polyaniline-modified electrodes enhance the performance of two-chambered microbial fuel cells

88%

Shengke Y., Yanhua W., Yang Z., Huihui L., Wenke W.

Polish Journal of Environmental Studies

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2017

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tom 26

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nr 3

The development of highly efficient modified electrodes is critical for enhancing the power output of microbial fuel cells (MFCs). In this study, different titanium electrodes were modified with functionalized graphene, polyaniline, and their composite (G/PANI) for use in two-chambered MFCs. The results showed that graphene, polyaniline, and G/PANI modification of the cathode improved the maximum power density of MFCs by 74%, 40%, and 126%, respectively, compared with the unmodified control. Among the three materials, G/PANI modification of the anode resulted in the highest open-circuit voltage of MFCs (0.71 V) and recorded the longest operating time for three consecutive cycles (110 h). G/PANI was superior to the other two materials in terms of power generation and it also extended the duration of the operating cycle of MFCs. G/PANI modification of both the cathode and anode improved the maximum power density of MFCs to 124.84 mW•m⁻²; this value was 24.8% and 18.9% higher than those obtained by simple modification of the cathode and the anode, respectively. The duration of the operating cycle of MFCs was also markedly extended to 35 h after G/PANI modification of both the cathode and anode. SEM results revealed that the increase in power generation of MFCs with G/PANI-modified electrodes could be attributed to the high surface area of electrodes and the large number of bacteria attached to electrodes. These results have demonstrated that the G/PANI composite can be effective materials for modifying electrodes and improving power generation in two-chambered MFCs.

11

Biocontrol of gray mold decay in pear by Bacillus amyloliquefaciens strain BA3 and its effect on postharvest quality parameters

88%

Qu H., Zhao L., Zhao F., Liu Y., Yang Z.

Polish Journal of Microbiology

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2016

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tom 65

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nr 2

The economic losses caused by postharvest fruits diseases have attracted global attention. Traditional chemical fungicide could not meet the need of humans. In recent years, microbial agent which has begun to take the place of chemical fungicide comes into people’s vision. The aim of this paper was to investigate the potential of Bacillus amyloliquefaciens strain BA3 for its biocontrol capability on gray mold decay of pears and its effect on postharvest quality of pears. Compared with other treatments, the inhibition effect on gray mold of washed cell suspension of B. amyloliquefaciens was the best. Consequently it was utilized in subsequent experiments. Spore germination and germ tube length of Botrytis cinerea was 18.72% and 12.85 μm treated with BA3, while the control group was 62.88% and 30.44 μm. We confirmed that increase of the concentration of B. amyloliquefaciens, improved the efficacy of BA3 in controlling gray mold decay of pears. Colonization variation of BA3 in wounds of pears was recorded. To begin with, the populations of B. amyloliquefaciens increased rapidly and remained stable. On the fourth day, there was a declining trend , after that the population increased to 4 × 10⁵ CFU/wound and remained stable. BA3 had no significant effect on mass loss, titratable acidity, firmness and total soluble solids of pears that were stored at 25°C for 7 days comparing with control group. However, the effect of B. amyloliquefaciens on ascorbic acid was significantly higher than that of the control group. Our study indicates that B. amyloliquefaciens has a potential as postharvest biocontrol agent on pears.

12

Ground-active arthropod recovery in response to size of shrub plantations in a desertified grassland ecosystem

88%

Liu R., Liu J., Zhao J., Xi W., Yang Z.

Polish Journal of Ecology

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2017

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tom 65

|

nr 3

The ground-active arthropod diversity response to size of shrub plantations in desertified grassland ecosystems is largely unknown. In the study ground-active arthropods were collected by pitfall trapping beneath shrub canopy of very low, low, medium and high size, with adjacent mobile sandy land as a control. It was found that arthropod dominant taxa from mobile sandy land were significantly distinctive from those from plantations of different shrub size. A considerably lower Sørensen index (i.e., 0.25–0.48) was found between the arthropod communities from mobile sandy land and the canopy of either shrub size, than between those under low and medium/high shrub size (i.e., 0.62 to 0.69). The arthropod total abundance was significantly greater under the shrub canopy of very low size in comparison to that of low and medium shrub size and mobile sandy land, with the intermediate values under shrub canopy of high shrub size. Taxon richness and diversity of arthropod communities were distinctly lower under the shrub canopy of low size in comparison to very low, medium and high shrub size. The shrub size was found to have different effects on the density and richness distribution of arthropod trophic groups (i.e., predators, phytophagous, saprophagous, and omnivorous). It was concluded that shrub plantations could facilitate ground-active arthropod diversity recovery when they were afforested in mobile sandy land. There was a contrasting effect of shrub size on ground-active arthropod diversity recovery versus arthropod abundance when grazing was excluded.

13

Assessing landscape ecological risk for a world natural heritage site: a case study of Bayanbulak in China

88%

Shi H., Yang Z., Han F., Shi T., Li D.

Polish Journal of Environmental Studies

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2015

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tom 24

|

nr 1

Wetland protection, floral and faunal resource management, and habitat migration are all concerns for the ecological risk of wetland landscapes. Indices of landscape-scale ecological risks have the potential to influence changes in landscape patterns, the conditions of endangered plants and animals, and influences from nature and humans. Semi-variation function and gravity center models were used to quantify risk area changes. The changes of landscape ecological risk were analyzed for Bayanbulak Wetland from 2000 to 2010. In addition to landscape and species distribution data, GIS technology and remote sensing were used in this study. Results show that landscape structure changed over the 10-year period, with high-cover grassland area decreasing the most. Landscape pattern index types also changed for the study area. The number of landscapetype patches to low-cover grassland decreased, the landscape fragmentation index of dry land and high-cover grassland was reduced, and the interference degree of middle-cover grassland increased over the study period. The index of landscape ecological risk decreased from 2000 to 2010, with the spatial structure changing from a single center concentration to a multi-center distribution. All varying ecological risk regions of gravity centers moved from the northeast to the southwest. The gravity migration of the Level 2 region moved the furthest. Additionally, evidence suggests that various threatening factors reduce the ecological function and systems of wetlands. These include climate change, biological invasion, human activities, and water pollution. This paper assesses the heritage site landscape ecological risk and calculates the gravity center change of the region, which can be formulated to enrich and develop the research of small- and medium-sized wetlands in cold, semi-arid climates.

14

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Evaluation of heating uniformity in radio frequency heating systems using carrot and radish

88%

Kong L., Min Z., Wang Y., Adhikari B., Yang Z.

International Agrophysics

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2016

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tom 30

|

nr 4

Lack of heating uniformity is a major problem impeding the broader adaptation of radio frequency heaters in industrial applications. The overall aim of this study was to evaluate the uniformity of heating or temperature distribution within food samples (three different carrot and one radish rectangles) placed vertically and horizontally within a radio frequency heating cavity. The intensity of the electric field in radio frequency was found to be symmetrical. The temperatures at the vertically top positions were lower than the vertically bottom positions at the equidistance from the vertical center with the highest was at the vertically central position. The rate of temperature rise at all the positions were higher in taller (higher mass) than the shorter (lower mass) rectangles of carrots. The temperatures at the corners and edges were lower than at the cross sectionally central positions at all the heights tested in both carrots and radishes. The rate of temperature rise at all the vertical positions was higher in radish rectangles than in the carrot rectangles of the same dimensions. The similarity of temperature distribution in carrot and radish rectangles suggested that the heating patterns and uniformity in carrots and radishes in RF heating were almost the same.

15

The role of glycogen synthase kinase-3β in glioma cell apoptosis induced by remifentanil

88%

Xu J., Xu P., Li Z., Xiao L., Yang Z.

Cellular and Molecular Biology Letters

|

2013

|

tom 18

|

nr 4

The aim of malignant glioma treatment is to inhibit tumor cell proliferation and induce tumor cell apoptosis. Remifentanil is a clinical anesthetic drug that can activate the N-methyl-D-aspartate (NMDA) receptor. NMDA receptor signaling activates glycogen synthase kinase-3β (GSK-3β). Discovered some 32 years ago, GSK-3β was only recently considered as a therapeutic target in cancer treatment. The purpose of this study was to assess whether remifentanil can induce the apoptosis of C6 cells through GSK-3β activation. 3-(4,5-Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) was used to detect cell viability. Hoechst 33342 staining and flow cytometry were used to detect cell apoptosis. The effect of GSK-3β activation was detected using a GSK-3β activation assay kit and 4-benzyl-2-methyl-1,2,4-thiadiazolidine-3,5-dione (TDZD-8), a potent and selective small molecule inhibitor of GSK-3β. The MTT assay indicated that remifentanil induced C6 cell death in a concentration- and time-dependent manner. Hoechst 33342 staining and flow cytometry showed that remifentanil significantly induced C6 cell apoptosis. The measurement of GSK-3β activation showed that remifentanil increased the cellular level of GSK-3β. All of these toxic effects can be attenuated by treatment with TDZD-8. These results suggest that remifentanil is able to induce C6 cell apoptosis through GSK-3β activation, which provides a basis for its potential use in the treatment of malignant gliomas.

16

Actinobacterial communities of chosen extreme habitats in China

76%

Jia P., Li M., Feng H., Ma M., Gai J., Yang Z.

Polish Journal of Ecology

|

2020

|

tom 68

|

nr 3

17

Isolation and characterization of exopolysaccharide-producing Lactobacillus plantarum SKT109 from Tibet Kefir

76%

Wang J., Zhao X., Tian Z., He C., Yang Y., Yang Z.

Polish Journal of Food and Nutrition Sciences

|

2015

|

tom 65

|

nr 4

Lactobacillus plantarum SKT109 was isolated and identified from Tibet Kefir, and the exopolysaccharride (EPS)-producing properties of the strain were evaluated. Growth of strain SKT109 in a semi-defined medium at 37°C increased the viscosity of the medium, corresponding to production of an EPS (58.66 mg/L). The EPS was isolated and purified, and it was shown to consist of fructose and glucose in an approximate molar ratio of 3:1, with an average molecular weight of 2.1x106 Da. The aqueous solution of EPS at 1% (w/v) exhibited shear thinning behavior. Microstructural studies of the EPS demonstrated a highly compact structure with a smooth surface, facilitating formation of film by the polymer; the EPS was composed of many different sizes of spherical lumps with tendency to form molecular aggregates. Studies on the milk fermentation characteristics of L. plantarum SKT109 showed that the strain survived well in fermented milk with counts about 8.0 log cfu/g during 21 days of storage at 4°C. The use of the EPS-producing strain improved the rheology of the fermented milk without causing post-acidification during storage. Particularly, L. plantarum SKT109 improved the fermented milk flavor by increasing the concentration of characteristic flavor compounds and eliminating those with disgusting flavors. The results of the present study indicated that EPS-producing L. plantarum SKT109 could serve as a promising candidate for further exploitation in fermented foods.

18

Fatigue life prediction of umbilicals considering non-linear stress

76%

Lu Q., Yin Y., Yang Z., Chen J., Yan J., Yue Q.

Polish Maritime Research

|

2017

|

tom 24

|

nr Special Issue S2

The fatigue problem induced by wave loads and floater movements of dynamic umbilicals in deepwater is studied. The prediction method of the fatigue life is investigated by considering no-linear local stress due to contact and friction between components of the umbilical. A case study of a dynamic umbilical for 1500 meters depth in South China Sea was presented. The results showed that the more accurate result of the fatigue life was calculated by considering non-linear local stress. The fatigue life by considering local stress with the no-slip assumption was conservative. An obviously longer fatigue life was obtained by considering local stress with the full-slip assumption

19

Age estimation for children and young adults by volumetric analysis of upper anterior teeth using cone-beam computed tomography data

76%

Yang Z., Fan L., Kwon K., Pan J., Tao J., Ji F.

Folia Morphologica

|

2020

|

tom 79

|

nr 4

20

Bovine in vitro embryo production using media prepared with Milli-Q® Water or nanowater

76%

Yang Z., Liu X., Szymanowicz J., Fryc K., Schwarz T., Murawski M., Bartlewski P. M.

Reproductive Biology

|

2020

|

tom 20

|

nr 4

Ograniczanie wyników

Use of discrimination analysis on NIRS to detect meat-and-bone meal content in ruminant concentrates

Oligonucleotides replacing the roles of repetitive sequences pAs1, pSc119.2, pTa-535, pTa71, CCS1, and pAWRC.1 for FISH analysis

Assessment of heavy metals contamination in near-surface dust

Emission characteristics for waste cooking oil biodiesel blend in a marine diesel propulsion engine

Prediction of silage digestibility by near infrared reflectance spectroscopy

Combustion and emissions investigation on low-speed two-stroke marine diesel engine with low sulfur diesel fuel

Lactobacillus fermentum JX306 restrain D-galactose-induced oxidative stress of mice through its antioxidant activity

Exopolysaccharides from Lactobacillus plantarum YW11 improve immune response and ameliorate inflammatory bowel disease symptoms

Selection of reference genes for quantitative real-time PCR during flower bud development in CMS7311 of heading Chinese cabbage (Brassica rapa L. ssp. pekinensis)

Using graphene/polyaniline-modified electrodes enhance the performance of two-chambered microbial fuel cells

Biocontrol of gray mold decay in pear by Bacillus amyloliquefaciens strain BA3 and its effect on postharvest quality parameters

Ground-active arthropod recovery in response to size of shrub plantations in a desertified grassland ecosystem

Assessing landscape ecological risk for a world natural heritage site: a case study of Bayanbulak in China

Evaluation of heating uniformity in radio frequency heating systems using carrot and radish

The role of glycogen synthase kinase-3β in glioma cell apoptosis induced by remifentanil

Actinobacterial communities of chosen extreme habitats in China

Isolation and characterization of exopolysaccharide-producing Lactobacillus plantarum SKT109 from Tibet Kefir

Fatigue life prediction of umbilicals considering non-linear stress

Age estimation for children and young adults by volumetric analysis of upper anterior teeth using cone-beam computed tomography data

Bovine in vitro embryo production using media prepared with Milli-Q® Water or nanowater