The Jiangsu Light Industrial Products Import and Export (Holding) Corporation Ltd is the first provincial specialized foreign trade corporation in the economic and trade system of Jiangsu Province to practice the hold...The Jiangsu Light Industrial Products Import and Export (Holding) Corporation Ltd is the first provincial specialized foreign trade corporation in the economic and trade system of Jiangsu Province to practice the holding system. After adopting the holding system in 1993, the corporation saw a total import and export volume of US $ 270 million in that year, with展开更多
The Liaoning Light Industrial Products Import and Export Corporation founded in 1954 is the first legally recognized enterprise established in Northeast China. Liaoning province is the show place and gateway to North ...The Liaoning Light Industrial Products Import and Export Corporation founded in 1954 is the first legally recognized enterprise established in Northeast China. Liaoning province is the show place and gateway to North east China, and a bridge between Asia and Europe. The geographic location and the natural environment of the region with展开更多
The Beijing Light Industrial Products Import and Export Corporation is under the Beijing Municipal Foreign Economic and Trade Commission. It is a state-owned specialized foreign trading corporation founded in 1964. Th...The Beijing Light Industrial Products Import and Export Corporation is under the Beijing Municipal Foreign Economic and Trade Commission. It is a state-owned specialized foreign trading corporation founded in 1964. Through constant development and growth, the corporation has established business relations with over 2,000 customers in over 100 countries and regions worldwide. Domestically,展开更多
We study the production of light nuclei in the coalescence mechanism of Au-Au collisions at midrapidity at √sNN=3GeV.We derive analytic formulas of the momentum distributions of two bodies,three bodies,and four nucle...We study the production of light nuclei in the coalescence mechanism of Au-Au collisions at midrapidity at √sNN=3GeV.We derive analytic formulas of the momentum distributions of two bodies,three bodies,and four nucleons coalescing into light nuclei and naturally explain the transverse momentum spectra of the deuteron(d),triton(t),helium-3(3He),and helium-4(4He).We reproduce data on the yield rapidity densities,yield ratios,and averaged transverse momenta of d,t,3He,and 4He and provide the proportions of contributions from different coalescence sources for t,3He,and 4He in their production.We find that besides nucleon coalescence,nucleon+nucleus coalescence and nucleus+nucleus coalescence may play requisite roles in light nucleus production in Au-Au collisions at √sNN=3 GeV.展开更多
A simple, facile in situ reduction approach is reported for the synthesis of Pd- nanoparticle-decorated phosphotungstic acid （PTA）-MIL-100（Fe） nanocomposites （Pd-H3PW12040-MIL-100（Fe）, denoted Pd-PTA-MIL-100（F...A simple, facile in situ reduction approach is reported for the synthesis of Pd- nanoparticle-decorated phosphotungstic acid （PTA）-MIL-100（Fe） nanocomposites （Pd-H3PW12040-MIL-100（Fe）, denoted Pd-PTA-MIL-100（Fe））. During the in situ synthesis, PTA is encapsulated into the matrix of MIL-100（Fe） and serves as a UV-switchable reducing agent, resulting in highly dispersed Pd NPs. Using the photocatalytic degradation of pharmaceuticals and personal care products as model reactions, the ternary Pd-PTA-MIL-100（Fe） hybrids exhibited enhanced photocatalytic activity compared with their foundation matrices, the binary PTA-MIL-100（Fe） nanocomposite. Based on photoelectrochemical analyses, the improved photocatalytic performance can be attributed to the well-known electronic conductivity of the Pd NPs, the fast electron transport of PTA, the intense visible-light absorption of MIL-100（Fe）, and the matched energy levels of the three components： MIL-100（Fe）, PTA, and Pd NPs. Importantly, almost no Fe and W ions were leached from the samples during the reaction, demonstrating the photostability of the Pd-PTA-MIL-100（Fe） composite. In addition, possible photocatalytic reactions mechanisms have also been investigated.展开更多
Production of light complex particles from the n＋^238u reaction is analyzed with the exciton model including the improved Iwamoto-Harada pickup mechanism for the preequilibrium process. It is allowed that some of the...Production of light complex particles from the n＋^238u reaction is analyzed with the exciton model including the improved Iwamoto-Harada pickup mechanism for the preequilibrium process. It is allowed that some of the nucleons forming the complex ejectile come from levels below the Fermi energy, and the intrinsic structure of the emitted particle is taken into account. The equilibrium-state emissions are also considered by using Hauser- Feshbach theory with the width fluctuation correction and the evaporation model angular distributions, energy spectra and double differential cross sections of neutron, alpha emissions for the n＋^238U reaction are consistently calculated and analyzed with the energy range En ≤150 MeV. ENDF-formatted nuclear data including information charged particles are obtained. Moreover, all cross sections, proton, deuteron, triton and nuclear theoretical models in about the production of light展开更多
1. An overall judgment on the situation 2006 saw the rapid growth of passenger vehicles, with the production capacity putting into use rose from less than 70 percent to around 80 percent. That with light commercial ve...1. An overall judgment on the situation 2006 saw the rapid growth of passenger vehicles, with the production capacity putting into use rose from less than 70 percent to around 80 percent. That with light commercial vehicles was similar too. The situation in 2005 and 2006 showed that there are no evidential overdone production capacity.展开更多
It is of broad interest to develop emerging photocatalysts with excellent light-harvesting capacity and high charge carrier separation efficiency for visible light photocatalytic hydrogen evolution reaction.However,ac...It is of broad interest to develop emerging photocatalysts with excellent light-harvesting capacity and high charge carrier separation efficiency for visible light photocatalytic hydrogen evolution reaction.However,achieving satisfying hydrogen evolution efficiency under noble metal-free conditions remains challenging.In this study,we demonstrate the fabrication of three-dimensionally ordered macroporous SrTiO_(3)decorated with Zn_(x)Cd_(1−x)S nanoparticles for hydrogen production under visible light irradiation(λ>420 nm).Synergetic enhancement of photocatalytic activity is achieved by the slow photon effect and improved separation efficiency of photogenerated charge carriers.The obtained composites could afford very high hydrogen production efficiencies up to 19.67 mmol·g^(−1)·h^(−1),with an apparent quantum efficiency of 35.9%at 420 nm,which is 4.2 and 23.9 times higher than those of pure Zn_(0.5)Cd_(0.5)S(4.67 mmol·g^(−1)·h^(−1))and CdS(0.82 mmol·g^(−1)·h^(−1)),respectively.In particular,under Pt-free conditions,an attractive hydrogen production rate(3.23 mmol·g^(−1)·h^(−1))was achieved,providing a low-cost and high-efficiency strategy to produce hydrogen from water splitting.Moreover,the composites showed excellent stability,and no obvious loss in activity was observed after five cycling tests.展开更多
文摘The Jiangsu Light Industrial Products Import and Export (Holding) Corporation Ltd is the first provincial specialized foreign trade corporation in the economic and trade system of Jiangsu Province to practice the holding system. After adopting the holding system in 1993, the corporation saw a total import and export volume of US $ 270 million in that year, with
文摘The Liaoning Light Industrial Products Import and Export Corporation founded in 1954 is the first legally recognized enterprise established in Northeast China. Liaoning province is the show place and gateway to North east China, and a bridge between Asia and Europe. The geographic location and the natural environment of the region with
文摘The Beijing Light Industrial Products Import and Export Corporation is under the Beijing Municipal Foreign Economic and Trade Commission. It is a state-owned specialized foreign trading corporation founded in 1964. Through constant development and growth, the corporation has established business relations with over 2,000 customers in over 100 countries and regions worldwide. Domestically,
基金Supported in part by the National Natural Science Foundation of China(12175115,12375074)the Natural Science Foundation of Shandong Province,China(ZR2020MA097)the Higher Educational Youth Innovation Science and Technology Program of Shandong Province,China(2020KJJ004,2019KJJ010)。
文摘We study the production of light nuclei in the coalescence mechanism of Au-Au collisions at midrapidity at √sNN=3GeV.We derive analytic formulas of the momentum distributions of two bodies,three bodies,and four nucleons coalescing into light nuclei and naturally explain the transverse momentum spectra of the deuteron(d),triton(t),helium-3(3He),and helium-4(4He).We reproduce data on the yield rapidity densities,yield ratios,and averaged transverse momenta of d,t,3He,and 4He and provide the proportions of contributions from different coalescence sources for t,3He,and 4He in their production.We find that besides nucleon coalescence,nucleon+nucleus coalescence and nucleus+nucleus coalescence may play requisite roles in light nucleus production in Au-Au collisions at √sNN=3 GeV.
文摘A simple, facile in situ reduction approach is reported for the synthesis of Pd- nanoparticle-decorated phosphotungstic acid （PTA）-MIL-100（Fe） nanocomposites （Pd-H3PW12040-MIL-100（Fe）, denoted Pd-PTA-MIL-100（Fe））. During the in situ synthesis, PTA is encapsulated into the matrix of MIL-100（Fe） and serves as a UV-switchable reducing agent, resulting in highly dispersed Pd NPs. Using the photocatalytic degradation of pharmaceuticals and personal care products as model reactions, the ternary Pd-PTA-MIL-100（Fe） hybrids exhibited enhanced photocatalytic activity compared with their foundation matrices, the binary PTA-MIL-100（Fe） nanocomposite. Based on photoelectrochemical analyses, the improved photocatalytic performance can be attributed to the well-known electronic conductivity of the Pd NPs, the fast electron transport of PTA, the intense visible-light absorption of MIL-100（Fe）, and the matched energy levels of the three components： MIL-100（Fe）, PTA, and Pd NPs. Importantly, almost no Fe and W ions were leached from the samples during the reaction, demonstrating the photostability of the Pd-PTA-MIL-100（Fe） composite. In addition, possible photocatalytic reactions mechanisms have also been investigated.
基金Supported by National Natural Science Foundation of China-NSAF(U1630122)IAEA Coordinated Research Projects(CRPs)on Recommended Input Parameter Library(RIPL)for Fission Cross Section Calculations(20464)Science Challenge Project(TZ2018005)
文摘Production of light complex particles from the n＋^238u reaction is analyzed with the exciton model including the improved Iwamoto-Harada pickup mechanism for the preequilibrium process. It is allowed that some of the nucleons forming the complex ejectile come from levels below the Fermi energy, and the intrinsic structure of the emitted particle is taken into account. The equilibrium-state emissions are also considered by using Hauser- Feshbach theory with the width fluctuation correction and the evaporation model angular distributions, energy spectra and double differential cross sections of neutron, alpha emissions for the n＋^238U reaction are consistently calculated and analyzed with the energy range En ≤150 MeV. ENDF-formatted nuclear data including information charged particles are obtained. Moreover, all cross sections, proton, deuteron, triton and nuclear theoretical models in about the production of light
文摘1. An overall judgment on the situation 2006 saw the rapid growth of passenger vehicles, with the production capacity putting into use rose from less than 70 percent to around 80 percent. That with light commercial vehicles was similar too. The situation in 2005 and 2006 showed that there are no evidential overdone production capacity.
基金supported by the Natural Science Foundation of Tianjin(Grant No.17JCYBJC22600)Tianjin Development Program for Innovation and Entrepreneurshipthe Fundamental Research Funds for the Central Universities.
文摘It is of broad interest to develop emerging photocatalysts with excellent light-harvesting capacity and high charge carrier separation efficiency for visible light photocatalytic hydrogen evolution reaction.However,achieving satisfying hydrogen evolution efficiency under noble metal-free conditions remains challenging.In this study,we demonstrate the fabrication of three-dimensionally ordered macroporous SrTiO_(3)decorated with Zn_(x)Cd_(1−x)S nanoparticles for hydrogen production under visible light irradiation(λ>420 nm).Synergetic enhancement of photocatalytic activity is achieved by the slow photon effect and improved separation efficiency of photogenerated charge carriers.The obtained composites could afford very high hydrogen production efficiencies up to 19.67 mmol·g^(−1)·h^(−1),with an apparent quantum efficiency of 35.9%at 420 nm,which is 4.2 and 23.9 times higher than those of pure Zn_(0.5)Cd_(0.5)S(4.67 mmol·g^(−1)·h^(−1))and CdS(0.82 mmol·g^(−1)·h^(−1)),respectively.In particular,under Pt-free conditions,an attractive hydrogen production rate(3.23 mmol·g^(−1)·h^(−1))was achieved,providing a low-cost and high-efficiency strategy to produce hydrogen from water splitting.Moreover,the composites showed excellent stability,and no obvious loss in activity was observed after five cycling tests.
