Evaluation of VIIRS, GOCI, and MODIS Collection 6 AOD retrievals against ground sunphotometer observations over East Asia

Xiao, Q.,Zhang, H.,Choi, M.,Li, S.,Kondragunta, S.,Kim, J.,Holben, B.,Levy, R. C.,Liu, Y. Copernicus GmbH 2016 Atmospheric Chemistry and Physics Vol.16 No.3

<P>Abstract. Persistent high aerosol loadings together with extremely high population densities have raised serious air quality and public health concerns in many urban centers in East Asia. However, ground-based air quality monitoring is relatively limited in this area. Recently, satellite-retrieved Aerosol Optical Depth (AOD) at high resolution has become a powerful tool to characterize aerosol patterns in space and time. Using ground AOD observations from the Aerosol Robotic Network (AERONET) and the Distributed Regional Aerosol Gridded Observation Networks (DRAGON)-Asia Campaign, as well as from handheld sunphotometers, we evaluated emerging aerosol products from the Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (S-NPP), the Geostationary Ocean Color Imager (GOCI) aboard the Communication, Ocean, and Meteorology Satellite (COMS), and Terra and Aqua Moderate Resolution Imaging Spectroradiometer (MODIS) (Collection 6) in East Asia in 2012 and 2013. In the case study in Beijing, when compared with AOD observations from handheld sunphotometers, 51 % of VIIRS Environmental Data Record (EDR) AOD, 37 % of GOCI AOD, 33 % of VIIRS Intermediate Product (IP) AOD, 26 % of Terra MODIS C6 3 km AOD, and 16 % of Aqua MODIS C6 3 km AOD fell within the reference expected error (EE) envelope (±0.05 ± 0.15 AOD). Comparing against AERONET AOD over the Japan-South Korea region, 64 % of EDR, 37 % of IP, 61 % of GOCI, 39 % of Terra MODIS, and 56 % of Aqua MODIS C6 3 km AOD fell within the EE. In general, satellite aerosol products performed better in tracking the day-to-day variability than tracking the spatial variability at high resolutions. The VIIRS EDR and GOCI products provided the most accurate AOD retrievals, while VIIRS IP and MODIS C6 3 km products had positive biases. </P>

Quantitative Trait Loci Mapping for Porcine Backfat Thickness

Wu, X.L.,Lee, C.,Jiang, J.,Peng, Y.L.,Yan, H.F.,Yang, S.L.,Xiao, B.N.,Liu, X.C.,Shi, Q.S. Asian Australasian Association of Animal Productio 2002 Animal Bioscience Vol.15 No.7

A partial genome scan using porcine microsatellites was carried out to detect quantitative trait loci (QTL) for backfat thickness (BFT) in a pig reference population. This population carried QTL on chromosomes 1, 13 and 18. The QTL on chromosome 1 was located between marker loci S0113 and SW1301. The QTL corresponded to very low density lipoprotein receptor gene (VLDLR) in location and in biological effects, suggesting that VLDLR might be a candidate gene. The QTL found on chromosome 13 was found between marker loci SWR1941 and SW864, but significance for the marker-trait association was inconsistent by using data with different generations. The QTL on chromosome 18 was discovered between markers S0062 and S0117, and it was in proximity of the regions where IGFBP3 and GHRHR were located. The porcine obese gene might be also a candidate gene for the QTL on chromosome 18. In order to understand genetic architecture of BFT better, fine mapping and positional comparative candidate gene analyses are necessary.

Effects of Dietary Energy Density on Growth, Carcass Quality and mRNA Expression of Fatty Acid Synthase and Hormone-sensitive Lipase in Finishing Pigs

Liu, Z.H.,Yang, F.Y.,Kong, L.J.,Lai, C.H.,Piao, X.S.,Gu, Y.H.,Ou, X.Q. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.10

A single factorial experiment was conducted to test the effects of three dietary levels of energy on mRNA expression of fatty acid synthase (FAS-mRNA) and hormone-sensitive lipase (HSL-mRNA) and their association with intramuscular fat in finishing pigs. 72 crossbred (Large $White{\times}Rongchang$) barrows with an average initial body weight of 20.71 (s.e. 0.1) kg, were randomly allotted to three dietary treatments (11.75, 13.05 and 14.36 MJ DE/kg) and fed until slaughtered at 100 or 101 kg. The diets were iso-nitrogenous and iso-essential amino acids. The growth performances including the duration of finishing were changed linearly (p<0.05) or quadratically (p<0.05) with increased dietary energy levels. The effects of dietary energy content on the percentage of external fat, intramuscular backfat and the fat thickness were linear (p<0.05). The content of dietary energy increased FAS-mRNA linearly or quadratically, while HSL-mRNA decreased linearly or quadratically in backfat and Longissmus dorsi muscle. Meanwhile, significant positive correlations (p<0.05) were found between energy level and intramuscular fat, FAS-mRNA or the ratio of FAS-mRNA to HSL-mRNA, between the ratio of FAS-mRNA to HSL-mRNA and intramuscular fat. However, the correlations between HSL mRNA and dietary energy or intramuscular fat were negative (p<0.05). The results indicated that dietary energy level regulates lipid accumulation, especially intramuscular fat, possibly by modulating the mRNA of FAS and HSL together rather than individually.

Mapping a Quantitative Trait Locus for Growth and Backfat on Porcine Chromosome 18

Wu, X.L.,Lee, C.,Jiang, J.,Peng, Y.L.,Yang, S.L.,Xiao, B.N.,Liu, X.C.,Shi, Q.S. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.12

A QTL was localized near S0120 on porcine chromosome 18. The QTL was significant (p<0.05) for average daily gain (ADG) of body weight and backfat thickness (BFT). The estimates of additive and dominance effects for the QTL were 0.0135 kg/day (p<0.001) and 0.0138 kg/day (p>0.5) for ADG and 1.6115 mm (p<0.001) and 0.9281 mm (p>0.05) for BFT. The location of this QTL coincided with a few growth hormone pathway genes. This study suggested that a QTL allele probably resulted from a mutation responsible for physiological lipase deficiency favoring obesity. This QTL might be important to obesity as well as growth in pigs.

An improved particles model for stress sensitivity in low-permeability sandstones

S. H. Gai,H. Q. Liu,S. L. He,G. Lei,S. Y. Mo,X. Huang,Y. Yang,X. Chen 한국자원공학회 2016 Geosystem engineering Vol.19 No.2

Stress-dependent permeability and porosity of porous media is very important for the development of oil reservoirs, especially in low-permeability reservoirs. Porous structure can change in response to an increase in the effective stress to induce the decline of permeability and porosity, which ultimately affects the fluid flow property. In this study, a capillary module, considering the arrangement and the deformation of particles, has been established to express the stress sensitivity of porous media based on the particle packing model. The predictions of variation of permeability by the proposed model have been validated by comparing with the experimental data. The predictions by the current model show the same variation trend with the experimental data and are consistent with the compression experiments. The proposed variation of permeability with the increase in effective stress depends on the factors such as the arrangement of particles (contact angle), the deformation of particles (elastic module and Poisson’s ratio) and effective stress. The effects of these parameters on variation of permeability are discussed in detail.

Sesquiterpenes from the roots of Lindera strychnifolia with inhibitory effects on nitric oxide production in RAW 264.7 cells

Liu, Q.,Jo, Y.H.,Kim, S.B.,Jin, Q.,Hwang, B.Y.,Lee, M.K. Pergamon Press 2016 Bioorganic & medicinal chemistry letters Vol.26 No.20

Seven new sesquiterpenes, linderolides N-T (1-7), along with nine known compounds, were isolated from roots of Lindera strychnifolia (Lauraceae). Their structures were established by extensive spectroscopic analysis. The relative and absolute configurations were determined by NOESY and CD analysis, respectively. Among the isolated compounds, two new compounds, linderolide O (2) and linderolide P (3) inhibited lipopolysaccharide-stimulated nitric oxide production in murine RAW 264.7 macrophage cells, with IC<SUB>50</SUB> values of 6.3 and 9.6μM, respectively.

Experimental study on seismic performance of coupling beams not designed for ductility

S.S.E. Lam,B. Wu,Z.Q. Liu,Y.L. Wong 국제구조공학회 2008 Structural Engineering and Mechanics, An Int'l Jou Vol.28 No.3

Seismic performance of coupling beams not designed for ductility is examined. Eight 1:4 scale coupling beam specimens, with seven reinforced concrete sections and one composite section, were tested under cycles of push-pull action. Characteristics of the specimens include moderate shear span ratio in the range of 2.5-3.5, high main reinforcement ratio at 3-4% and small to large stirrup spacing with 90- degree hooks. All the reinforced concrete specimens failed in a brittle manner. Displacement ductility of specimens with large stirrup spacing (≥140 mm) is in the range of 3 to 5. Seismic performance of the specimens is also examined using the ultimate drift angle and the amount of energy dissipated. Correlating the test data, an empirical relationship is proposed to estimate the ultimate drift angle of a class of coupling beams considered in the study not designed for ductility.

Facile Synthesis of Microsphere Copper Cobalt Carbonate Hydroxides Electrode for Asymmetric Supercapacitor

Liu, S.,Hui, K.S.,Hui, K.N.,Jadhav, V.V.,Xia, Q.X.,Yun, J.M.,Cho, Y.R.,Mane, R.S.,Kim, K.H. Pergamon Press 2016 ELECTROCHIMICA ACTA Vol.188 No.-

Porous microspheres copper cobalt carbonate hydroxides (Cu<SUB>x</SUB>Co<SUB>2@?x</SUB>CH) pseudocapacitive electrode material comprised of nanoplates via a facile hydrothermal method were presented. Significantly, the crystalline structure, morphology and electrochemical performance of the Cu<SUB>x</SUB>Co<SUB>2@?x</SUB>CH can be readily manipulated by varying the Cu/Co molar ratios. Among various stoichiometries of Cu<SUB>x</SUB>Co<SUB>2@?x</SUB>CH porous microspheres studied, Cu<SUB>1.79</SUB>Co<SUB>0.21</SUB>CH consisted of nanoplates with a mean thickness of @?35nm showed a high specific capacitance of 789Fg<SUP>@?1</SUP> at a current destiny of 1Ag<SUP>@?1</SUP> and good rate ability. Furthermore, the optimized Cu<SUB>1.79</SUB>Co<SUB>0.21</SUB>CH electrode also exhibited remarkable high cycling stability, ca 77.5% after 3000 charge/discharge cycles at current density of 5Ag<SUP>@?1</SUP>. An asymmetric device was constructed from optimized Cu<SUB>1.79</SUB>Co<SUB>0.21</SUB>CH materials on nickel foam (NF) as cathode electrode and graphene on NF as anode electrode in a 6M KOH electrolyte. The asymmetric Cu<SUB>1.79</SUB>Co<SUB>0.21</SUB>CH/NF//graphene/NF supercapacitor device delivered a specific capacitance of 60.5Fg<SUP>@?1</SUP> in a potential range of 0@?1.6V. A high energy density of 21.5Whkg<SUP>@?1</SUP> was achieved at the power density of 200Wkg<SUP>@?1</SUP>. More significantly, the designed device exhibited excellent cycling stability with 73.3% capacity retention after 5000 cycles.

Anti-adipogenic Activity of Cordyceps militaris in 3T3-L1 Cells

Liu, Q.,Hong, I.P.,Ahn, M.-J.,Yoo, H.-S.,Han, S.-B.,Hwang, B.Y.,Lee, M.K. NATURAL PRODUCT COMMUNICATIONS 2011 Natural product communications Vol.6 No.12

3D Atom Probe Characterization of Temporal Evolution of Precipitates in Aging Nb-V Micro-Alloyed Steel

Q.D.Liu,W.Q.Liu,S.J.Zhao 대한금속·재료학회 2012 METALS AND MATERIALS International Vol.18 No.6

A 3D atom probe combined with TEM was applied to characterize carbides precipitation in Nb-V microalloyed steel aging at 550 °C for different times after being water-quenched from 1200 °C. The results indicated that the V- and Nb-containing ultra-fine carbides obtained by 4 h aging had the highest number density and moderate sizes, resulting in a peak precipitation strengthening value. C, V and Nb firstly co-segregated to form nano-sized clusters at the initial stage of precipitation, and then contributed to the formation of composition-steady carbides as the aging time was prolonged.