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Jia, Y.,Wu, C.,Lee, B.W.,Liu, C.,Kang, S.,Lee, T.,Park, Y.C.,Yoo, R.,Lee, W. Elsevier Scientific Pub. Co 2017 Journal of hazardous materials Vol.338 No.-
In this report, magnetically recoverable sulfur-doped SnFe<SUB>2</SUB>O<SUB>4</SUB>/graphene (S-SFO/GR) nanohybrids have been successfully developed via a facile solvothermal method. The characterizations on the structural, morphology, and optical properties of the nanohybrids indicate that S-SFO particles are successfully embedded on the GR nanosheets. The photocatalytic activity has been evaluated by photocatalytic degradation of chlorotetracycline under visible light irradiation. Among the composites with various mass ratios, the quasi-first-order rate constant of the nanohybrids formed with 9wt% S in SFO and 15wt% GR (9S-SFO/GR-15) can reach as high as 1.83min<SUP>-1</SUP>, which is much higher than that of SFO (0.68min<SUP>-1</SUP>) and SFO/GR (0.91min<SUP>-1</SUP>), confirming the important role of S and GR for the photocatalytic process. The combination of the three components of S, SFO, and GR has enhanced the visible light absorption capability and inhibited the recombination of photogenerated electron-hole. The 9S-SFO/GR-15 nanohybrids can be recovered easily by a magnet and reused for five times with remained photocatalytic efficiency about 70%. A possible catalytic mechanism explaining the efficient photocatalytic performances of the prepared nanohybrids has been proposed.
THE AzTEC/SMA INTERFEROMETRIC IMAGING SURVEY OF SUBMILLIMETER-SELECTED HIGH-REDSHIFT GALAXIES
Younger, Joshua D.,Fazio, Giovanni G.,Huang, Jia-Sheng,Yun, Min S.,Wilson, Grant W.,Ashby, Matthew L. N.,Gurwell, Mark A.,Peck, Alison B.,Petitpas, Glen R.,Wilner, David J.,Hughes, David H.,Aretxaga, IOP Publishing 2009 The Astrophysical journal Vol.704 No.1
<P>We present results from a continuing interferometric survey of high-redshift submillimeter galaxies (SMGs) with the Submillimeter Array, including high-resolution (beam size similar to 2 arcsec) imaging of eight additional AzTEC 1.1 mm selected sources in the COSMOS field, for which we obtain six reliable (peak signal-to-noise ratio (S/N) > 5 or peak S/N > 4 with multiwavelength counterparts within the beam) and two moderate significance (peak S/N > 4) detections. When combined with previous detections, this yields an unbiased sample of millimeter-selected SMGs with complete interferometric follow up. With this sample in hand, we (1) empirically confirm the radio-submillimeter association, (2) examine the submillimeter morphology-including the nature of SMGs with multiple radio counterparts and constraints on the physical scale of the far infrared-of the sample, and (3) find additional evidence for a population of extremely luminous, radio-dim SMGs that peaks at higher redshift than previous, radio-selected samples. In particular, the presence of such a population of high-redshift sources has important consequences for models of galaxy formation-which struggle to account for such objects even under liberal assumptions-and dust production models given the limited time since the big bang.</P>
Search for light tetraquark states in ϒ(1S) and ϒ(2S) decays
Jia, S.,Shen, C. P.,Yuan, C. Z.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bahinipati, S.,Bakich, A. M.,Bansal, V.,Behera, P.,Berge American Physical Society 2017 Physical review. D Vol.96 No.11
<P>We search for the J(PC) = 0(--) and 1(+-) light tetraquark states with masses up to 2.46 GeV/c(2) in gamma(1S) and gamma(2S) decays with data samples of (102 +/- 2) million and (158 +/- 4) million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90% credibility level (C. L.) upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with f(1)(1285) are measured to be B(Upsilon(1S) -> f(1)(1285) + anything) = (46 +/- 28(stat) +/- 13(syst)) x 10(-4) and B(Upsilon(2S) -> f(1)(1285) + anything) = (22 +/- 15(stat) +/- 6.3(syst)) x 10(-4). The measured chi(b2) -> J/Psi + anything branching fraction is measured to be (1.50 +/- 0.34(stat) +/- 0.22(syst)) x 10(-3), and 90% C. L. upper limits for the chi(b0;b1) -> J/Psi + anything branching fractions are found to be 2.3 x 10(-3) and 1.1 x 10(-3), respectively. For B(chi(b1) -> omega + anything), the branching fraction is measured to be (4.9 +/- 1.3(stat) +/- 0.6(syst) x 10(-2). All results reported here are the first measurements for these modes.</P>
Search for the 0−− glueball in ϒ(1S) and ϒ(2S) decays
Jia, S.,Shen, C. P.,Yuan, C. Z.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Aushev, T.,Ayad, R.,Babu, V.,Badhrees, I.,Bakich, A. M.,Bansal, V.,Barberio, E.,Behera, P.,Bhuyan, B.,Biswal, J.,Bonvicin American Physical Society 2017 Physical Review D Vol.95 No.1
<P>We report the first search for the J(PC) = 0(--) glueball in Upsilon(1S) and Upsilon(2S) decays with data samples of (102 +/- 2) x 10(6) and (158 +/- 4) x 10(6) events, respectively, collected with the Belle detector. No significant signals are observed in any of the proposed production modes, and the 90% credibility level upper limits on their branching fractions in Upsilon(1S) and Upsilon(2S) decays are obtained. The inclusive branching fractions of the Upsilon(1S) and Upsilon(2S) decays into final states with chi(c1) are measured to be B(Upsilon(1S) -> chi(c1) + anything) = (1.90 +/- 0.43(stat) +/- 0.14(syst) x 10(-4) with an improved precision over prior measurements and B Upsilon(2S) -> chi(c1) + anything) = (2.24 +/- 0.44(stat) +/- 0.20(syst) x 10(-4) for the first time.</P>
Search for Ω(2012)→KΞ(1530)→KπΞ at Belle
Jia, S.,Shen, C. P.,Adachi, I.,Ahn, J. K.,Aihara, H.,Al Said, S.,Asner, D. M.,Aushev, T.,Ayad, R.,Babu, V.,Bahinipati, S.,Bakich, A. M.,Behera, P.,Beleñ,o, C.,Bennett, J.,Berger, M.,Bhardwaj, V. American Physical Society 2019 Physical review. D Vol.100 No.3
Jia, S.,Ryu, Y.,Kwon, S.W.,Lee, J. Elsevier 2013 Journal of chromatography A Vol.1282 No.-
A novel analytical method consisting of in situ derivatization combined with liquid phase microextraction followed by liquid chromatography-ultraviolet detection (LC-UV) was developed to determine the biogenic amines (BAs) of alcoholic beverages. Nine BAs (putrescine, cadaverine, 1,3-diaminopropane, tryptamine, phenylethylamine, spermidine, spermine, histamine, and tyramine) were derivatized in situ with benzoyl chloride, extracted by dispersive liquid-liquid microextraction based on solidification of floating organic droplets (DLLME-SFO), and then chromatographed by LC-UV. Factors influencing the derivatization and extraction efficiency were optimized, including the reaction buffer pH and concentration, amount of derivatization reagent, reaction time, types and volumes of extraction and dispersive solvents, and extraction time. Under the optimized conditions, the method was linear over 0.05-8.0μgmL<SUP>-1</SUP> with an r<SUP>2</SUP>≥0.992 and exhibited intra- and inter-day precision less than 8.8% and 11.5%, respectively. The limit of detection ranged between 0.005 and 0.01μgmL<SUP>-1</SUP>. The developed method using a basic LC-UV system is sensitive, rapid, convenient, green, and cost-effective. Moreover, it is versatile and practical for the analysis of BAs, as demonstrated by the successful application in four different types of popular alcoholic beverages (white wine, red wine, rice wine, and beer).
Jia, Yuefa,Wu, Changjin,Kim, Deok-Hyeon,Lee, B.W.,Rhee, S.J.,Park, Yun Chang,Kim, Chul Sung,Wang, Q.J.,Liu, Chunli Elsevier 2018 CHEMICAL ENGINEERING JOURNAL -LAUSANNE- Vol.337 No.-
<P><B>Abstract</B></P> <P>In the present work, N doped BiFeO<SUB>3</SUB> (N-BFO) nanoparticles have been synthesized via a sol-gel rapid calcination technique using melamine (C<SUB>3</SUB>H<SUB>6</SUB>N<SUB>6</SUB>) as the N precursor. It is found that N-doping could effectively narrow the band gap of BFO, which obviously enhanced the visible light adsorption capability. Meanwhile, N-doping could lead to significant increase in the magnetization of BFO. Particularly, the saturation magnetization (<I>M<SUB>s</SUB> </I>) was increased up to 0.35 emu/g (as compared to that of pure BFO: 0.07 emu/g) when 12.5 mmol N doping precursor was used (12.5N-BFO). The catalytic performance of N-BFO nanoparticles was evaluated through the degradation of bisphenol A (BPA) under visible light irradiation. 12.5N-BFO was found to be an efficient catalyst of BPA, and the addition of H<SUB>2</SUB>O<SUB>2</SUB> (10 mmol/L) or H<SUB>2</SUB>O<SUB>2</SUB> (10 mmol/L)/<SMALL>L</SMALL>-cysteine (0.25 mmol/L) can further enhance the degradation efficiency up to 60% and 94% within 120 min, respectively. The 12.5N-BFO nanoparticles were very stable during photocatalytic processes and their photo-Fenton catalytic activity can be retained even after three recycling processes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> N doped BiFeO<SUB>3</SUB> have been synthesized using melamine as the N precursor. </LI> <LI> The band gap and saturation magnetization of N doped BiFeO<SUB>3</SUB> is tunable. </LI> <LI> N doped BiFeO<SUB>3</SUB>/H<SUB>2</SUB>O<SUB>2</SUB> shows enhanced efficient degradation of bisphenol A. </LI> <LI> Addition of <SMALL>L</SMALL>-cysteine can further enhanced photodegradation performance. </LI> <LI> A mechanism of bisphenol A degradation was proposed. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Age Hardening Characteristics of Cu-Ag-Zr Alloy
S. G. Jia,X. M. Ning,M. S. Zheng,G. S. Zhou,P. Liu 대한금속·재료학회 2009 METALS AND MATERIALS International Vol.15 No.4
Cu-Ag-Zr alloy is a newly developed copper alloy material which has an excellent combination of high mechanical strength and high electrical conductivity. By means of vacuum induction melting, Cu-Ag-Zr alloy was produced. The effects of aging processes on the microhardness and electrical conductivity characteristics of Cu-Ag-Zr alloy were studied. After aging at 450 °C for 4h, the alloy showed an excellent combination of microhardness and electrical conductivity: the microhardness and electrical conductivity reach 126 HV and 84%IACS, respectively. The precipitates responsible for the age-hardening effect are the fine and dispersed Cu5Zr, which has a face center cubic structure. Cu5Zr precipitates are fully coherent with the Cu matrix and give the Cu- Ag-Zr alloy higher microhardness and higher electrical conductivity. Cu-Ag-Zr alloy is a newly developed copper alloy material which has an excellent combination of high mechanical strength and high electrical conductivity. By means of vacuum induction melting, Cu-Ag-Zr alloy was produced. The effects of aging processes on the microhardness and electrical conductivity characteristics of Cu-Ag-Zr alloy were studied. After aging at 450 °C for 4h, the alloy showed an excellent combination of microhardness and electrical conductivity: the microhardness and electrical conductivity reach 126 HV and 84%IACS, respectively. The precipitates responsible for the age-hardening effect are the fine and dispersed Cu5Zr, which has a face center cubic structure. Cu5Zr precipitates are fully coherent with the Cu matrix and give the Cu- Ag-Zr alloy higher microhardness and higher electrical conductivity.
Observation of a vector charmoniumlike state in e+e−→Ds+Ds1(2536)−+c.c.
Jia, S.,Shen, C. P.,Yuan, C. Z.,Wang, X. L.,Adachi, I.,Aihara, H.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Ayad, R.,Babu, V.,Badhrees, I.,Bakich, A. M.,Behera, P.,Bhuyan, B.,Bilka, T.,Biswal, J.,Bobrov, American Physical Society 2019 Physical review. D Vol.100 No.11
Observation of e+e−→γχc1 and search for e+e−→γχc0 , γχc2 , and γηc at s near 10.6 GeV at Belle
Jia, S.,Wang, X. L.,Shen, C. P.,Yuan, C. Z.,Adachi, I.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Aushev, T.,Ayad, R.,Babu, V.,Bansal, V.,Behera, P.,Beleñ,o, C.,Berger, M.,Bhu American Physical Society 2018 Physical Review D Vol.98 No.9