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| 1 | The creep compaction behavior of crushed mudstones under the step loading in underground mining显示文摘The crushed rocks are used as a filling material in mined丒out areas of underground mining. Compared with the man-made filling materials, the crushed rocks exhibit higher compressibility and lower stability, which may result in instability of surrounding rock and surface subsidence. To study the creep compaction behavior of crushed mudstones, a series of creep tests are conducted. The investigations show that the creep compaction behavior of crushed mudstones is highly dependent on the original grain composition and axial stress applied on the samples. The samples with more large particles are easier to deform at initial loading stage for more large voids existed in the samples, and exhibit greater stability than those with smaller particles when the axial stress less than the bearing capacity of uframework structure When the axial stress is higher than 20 MPa, the influences of grain composition on deformability of crushed mudstones are weakened after the samples experience repeated compression. At lower stress level, the creep behavior prefers to occur in the samples w.h smaller particles, which is mainly caused by particles flow without significant particle breakage. As the axial stress increases, the single-sized sample with smaller particle size and the well-graded sample with larger Talbol power exponent n present more unstable under the constant stress. In addition, the filling of the residual intergranular voids by small particles formed by crushing and splitting behavior is the main cause of creep deformation. Lastly, a creep equation of crushed mudstones is obtained in this paper, which can agree with the experimental results in good. | Zhibiao Guo Qiong Wang Songyang Yin Xiaohui Kuai Dongshan Yan Mengyi Li Yandong Qu | 2019 | International Journal of Coal Science & Technology2019，6，3： | 2 |
| 2 | Response of leaf carbon metabolism and dry matter accumulation to density and row spacing in two rapeseed(Brassica napus L.)genotypes with differing plant architectures显示文摘Biological yield indicates the potential for increasing yield.Leaf carbon metabolism plays an important role in the biomass accumulation of rapeseed(Brassica napus L.).Field experiments with the hybrid HZ62(with a conventional plant architecture)grown in 2016–2017,and HZ62 and accession 1301(with a compact plant architecture)grown in 2017–2018 were conducted to characterize the physiological and proteomic responses of leaf photosynthetic carbon metabolism to density and row spacing configurations.The densities were set at 15×10;ha^(-1)(D1),30×10^(4)ha^(-1)(D2),and 45×10^(4)ha^(-1)(D3)(main plot),with row spacings of 15 cm(R15),25 cm(R25),and 35 cm(R35)(subplot).Individual and plant population biomass accumulation was greatest at R25,R15,and R15 for D1,D2,and D3,respectively,for both genotypes.In comparison with D1 R25,the individual aboveground biomass of HZ62 decreased by60.2%,whereas the population biomass increased by 31.9%,and the individual biomass of genotype1301 decreased by 54.0%and the population biomass increased by 53.9%at D3 R15.Leaf carbon metabolic enzymes varied between genotypes at flowering stage.In contrast to D1 R25,at D3 R15 the activities of ribulose-1,5-bisphosphate carboxylase/oxygenase(Rubisco)and sucrose phosphate synthase(SPS)and the contents of starch,sucrose and soluble sugars in leaves were significantly decreased in HZ62 and increased in genotype 1301.The activities of fructose-1,6-bisphosphatase(FBPase)decreased,in consistency with the abundance of fructose-bisphosphate aldolase in HZ62.In contrast,sucrose synthase(Su Sy)activity appeared to decrease in both genotypes,but a significant increase in abundance of a protein with sucrose synthase was found in the 1301 genotype by proteomic analysis.With increased density and reduced row spacing,the expression of most key proteins involved in carbon metabolism was elevated,and enzyme activity and carbon assimilate content were increased in 1301,whereas HZ62 showed the opposite trend,indicating that the compact plant type can accumulate more population biomass with denser planting. | Jie Kuai Xiaoyong Li Jianli Ji Zhen Li Yan Xie Bo Wang Guangsheng Zhou | 2022 | The Crop Journal2022，10，3： | 2 |
| 3 | Alternations in the gut microbiota and metabolome with newly diagnosed unstable angina显示文摘Gut microbiota plays an important role in coronary heart disease, but its compositional and functional changes in unstable angina(UA) remain unexplored. We performed metagenomic sequencing of 133 newly diagnosed UA patients and 133 sex-and age-matched controls, and profiled the fecal and plasma metabolomes in 30 case-control pairs. The alpha diversity of gut microbiota was increased in UA patients:the adjusted odds ratios(ORs) per standard deviation increase in Shannon and Simpson indices were 1.30(95% confidence interval, 1.01-1.70) and 1.36(1.05-1.81), respectively. Two common species(depleted Klebsiella pneumoniae and enriched Streptococcus parasanguinis;P ≤ 0.002) and three rare species(depleted Weissella confusa, enriched Granulicatella adiacens and Erysipelotrichaceae bacterium 6_1_45;P ≤ 0.005) were associated with UA. The UA-associated gut microbiota was depleted in the pathway of Lphenylalanine degradation(P = 0.001), primarily contributed by Klebsiella pneumoniae. Consistently, we found increased circulating phenylalanine in UA patients(OR = 2.76 [1.17-8.16]). Moreover, Streptococcus parasanguinis was negatively correlated with fecal citrulline(Spearman's r_(s)=-0.470, P = 0.009), a metabolite depleted in UA patients(OR = 0.26 [0.08-0.63]). These findings are informative to help understand the metabolic connection between gut microbiota and UA. | Xuezhen Liu Miaoyan Shen Han Yan Pinpin Long Haijing Jiang Yizhi Zhang Lue Zhou Kuai Yu Gaokun Qiu Handong Yang Xiulou Li Xinwen Min Meian He Xiaomin Zhang Hyungwon Choi Chaolong Wang Tangchun Wu | 2022 | Journal of Genetics and Genomics2022，49，3： | 1 |
| 4 | Millimeter-wave wireless communications for home network in fiber-to-the-room scenario显示文摘Millimeter-wave(mmWave)technology has been well studied for both outdoor long-distance transmission and indoor short-range communication.In the recently emerging fiber-to-the-room(FTTR)architecture in the home network of the fifth generation fixed networks(F5G),mmWave technology can be cascaded well to a new optical network terminal in the room to enable extremely high data rate communication(i.e.,>10 Gb/s).In the FTTR+mmWave scenario,the rapid degradation of the mmWave signal in long-distance transmission and the significant loss against wall penetration are no longer the bottlenecks for real application.Moreover,the surrounding walls of every room provide excellent isolation to avoid interference and guarantee security.This paper provides insights and analysis for the new FTTR+mmWave architecture to improve the customer experience in future broadband services such as immersive audiovisual videos. | Chao HE Zhixiong REN Xiang WANG Yan ZENG Jian FANG Debin HOU Le KUAI Rong LU Shilin YANG Zhe CHEN Jixin CHEN | 2021 | Frontiers of Information Technology & Electronic Engineering2021，22，4： | 1 |
| 5 | Engineering Exciton-Phonon Interactions for Suppressing Nonradiative Energy Loss in Energy-Transfer-Initiated Photocatalysis显示文摘The prevalent excitonic effects in low-dimensional semiconductors enable energy-transfer-initiated photocatalytic solar-to-chemical energy conversion.However,the generally strong interactions between excitons and lattice vibrations in these low-dimensional systems lead to robust nonradiative energy loss,which inevitably impedes photocatalytic performance of energy-transfer-initiated reactions.Herein,we highlight the crucial role of engineering exciton-phonon interactions in suppressing nonradiative energy losses in low-dimensional semiconductor-based photocatalysts.By taking bismuth oxybromide(BiOBr)as an example,we demonstrate that phonon engineering could be effectively implemented by introducing Bi-Br vacancy clusters.Based on nonadiabatic molecular dynamics simulations and spectroscopic investigations,we demonstrate that the defective structure can promote exciton-low-frequency phonon coupling and reduce exciton-high-frequency optical phonon coupling.Benefiting from the tailored couplings,nonradiative decay of excitons in defective BiOBr is significantly suppressed,thereby facilitating exciton accumulation and hence energy-transfer-initiated photocatalysis. | Hui Wang Sen Jin Aolei Wang Xiang Jiang Wenxiu Liu Xiaodong Zhang Wensheng Yan Kuai Yu Jin Zhao Yi Xie | 2023 | CCS Chemistry2023，5，1： | 0 |
| 6 | Controllable optofluidic assembly of biological cells using an all-dielectric one-dimensional photonic crystal显示文摘Opto-thermophoretic manipulation is emerging as an effective way for versatile trapping,guiding,and assembly of biological nanoparticles and cells.Here we report a new opto-thermophoretic tweezer based on an all-dielectric one-dimensional photonic crystal(1 DPC)for reversible assembly of biological cells with a controllable center.To reveal its ability of long-range optofluidic manipulation,we demonstrate the reversible assembly of many yeast cells as well as E.coli cells that are dispersed in water solution.The 1 DPC-based tweezer can also exert short-range optical gradient forces associated with focused Bloch surface waves excited on the 1 DPC,which can optically trap single particles.By combining both the optical and thermophoretic manipulation,the optically trapped single polystyrene particle can work as a controllable origin of the reversible cellular assembly.Numerical simulations are performed to calculate the temperature distribution and convective flow velocity on the 1 DPC,which are consistent with the experimental observations and theoretically confirm the long-range manipulations on the alldielectric 1 DPC platform.The opto-thermophoretic tweezers based on all-dielectric 1 DPC endow the microma-nipulation toolbox for potential applications in biomedical sciences. | FENGYA LU LEI GONG YAN KUAI XI TANG YIFENG XIANG PEI WANG DOUGUO ZHANG | 2022 | Photonics Research2022，10，1： | 0 |
| 7 | Wide-field optical sizing of single nanoparticles with 10 nm accuracy显示文摘There is an increasing demand for new technologies to rapidly measure individual nanoparticles in situ for applications,including early-stage diagnosis of human diseases and environmental monitoring.Here,we demonstrate a label-free wide-field optical microscopy capable of sizing dispersed non-luminescent dielectric nanoparticles(with diameters down to 22 nm)with 10 nm accuracy.This technique utilizes enhanced nanoparticle-perturbed scattering by surface plasmons created on a gold film.In the meantime,an azimuthal rotation illumination module is installed on this microscope and a differential image processing technique is carried out.The relationship between the scattering intensity and the particle size was experimentally measured with good consistency with the theoretical prediction.The capability of precise measurement of the size of dispersed nanoparticles within a larger field of view in a label-free,non-invasive and quantitative manner may find broad applications involving single nanoparticle chemistry and physics. | Yang Liu Yan Kuai Qiwen Zhan Joseph R.Lakowicz Douguo Zhang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，9： | 0 |
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