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| 1 | Constitutive model for methane desorption and diffusion based on pore structure differences between soft and hard coal显示文摘This paper aims to improve the accuracy and applicability of gas diffusion mathematical models from coal particles. Firstly, a new constitutive model for gas diffusion from coal particles with tri-disperse pore structure is constructed by considering the difference in characteristics between soft coal and hard coal.The analytical solution is then derived, that is, the quantitative relationship between gas diffusion rate(Qt/Q_∞) and diffusion time(t), The pore structure parameters of soft coal and hard coal from Juji coal mine are determined. Gas diffusion rules are numerically calculated and investigated by physical simulation methods. Lastly, the applicability of this model is verified. The results show that the homogeneous model only applies to the gas diffusion process of hard coal during the initial 10 min. The calculation results from this model and the physical experimental results of soft coal and hard coal are nearly identical during the initial 30 min. | Liu Yanwei Wang Dandan Hao Fuchang Liu Mingju Mitri Hani S. | 2017 | International Journal of Mining Science and Technology2017，27，6： | 8 |
| 2 | Indonesian Throughflow in an eddy-resolving ocean model显示文摘The performance of the eddy-resolving LICOM2.0 in simulating the Indonesian Throughflow has been evaluated against the INSTANT data in the present study.The mean vertical structures of the along strait velocities are simulated well in LICOM2.0,but the large velocities at the bottom of the Lifamatola Passage and the Timor Passage cannot be reproduced by LICOM2.0.The causes are considered to be both the errors in the topography and the tidal mixing at the bottom.Despite several biases in the mean velocities,the mean inflow and outflow volume transports in LICOM2.0 are almost identical to the INSTANT data.Compared with the lower resolution LICOM,the most significant improvement is the better simulation of the partitions of the inflow and outflow transports in individual straits.The outflow for low-resolution LICOM is mainly through the Ombai and Lombok Strait,whereas that for LICOM2.0 is mainly through the Timor Passage.The variability of the vertical structure of velocities and the volume transport are also investigated.LICOM2.0 overestimates the magnitude of the upper-layer currents and the amplitude of the variation.We also found that the largest correlation coefficient occurs in the shallowest strait,the Lombok,whereas the lowest occurs in the Timor Passage,especially in the upper layer.The latter may be caused by the unrealistic transport through the Torres Strait in LICOM2.0. | FENG Xue LIU HaiLong WANG FuChang YU YongQiang YUAN DongLiang | 2013 | Chinese Science Bulletin2013，58，35： | 4 |
| 3 | PM_(2.5) exposure associated with microbiota gut-brain axis:Multi-omics mechanistic implications from the BAPE study显示文摘Recent studies have shown that PM_(2.5) may activate the hypothalamus-pituitary-adrenal(HPA)axis by inducing hormonal changes,potentially explaining the increase in neurological and cardiovascular risks.In addition,an association between PM_(2.5) and gut microbiota and metabolites was established.The above evidence represents crucial parts of the gut-brain axis(GBA).In view of this evidence. | Tiantian Li Jianlong Fang Song Tang Hang Du Liang Zhao Yanwen Wang Fuchang Deng Yuanyuan Liu Yanjun Du Liangliang Cui Wanying Shi Yan Wang Jiaonan Wang Yingjian Zhang Xiaoyan Dong Ying Gao Yu Shen Li Dong Huichan Zhou Qinghua Sun Haoran Dong Xiumiao Peng Yi Zhang Meng Cao Hong Zhi Jingyang Zhou Xiaoming Shi | 2022 | The Innovation2022，3，2： | 2 |
| 4 | Effect of High Electric Field on Lifetime Performance of Metalized Film Capacitor in Pulsed-power Applications显示文摘High energy density capacitor is a key device to power supply source for electromagnetic gun (EMG) system, and extending its lifetime is important for increasing the reliability of the power source. Working in high electric field could affect the capacitor lifetime, and this effect on metallized polypropylene film capacitors (MPPFCs) in pulsed-power applications is studied and presented. Experimental re- sults show that the lifetime of MPPFCs decreases with the increasing peak value of charged electric field, and this decrease could be described by function (L/L0) ∝ (E/E0)–m, where, m=7.32. The lifetime of MPPFCs also decreases with the increase of the reversal coeffi- cients in underdamped circuits, which could be described by (L/L0) ∝ (ln(1/K0)/(ln(1/K))–b, where, b=0.7. These results provide a basis for the lifetime prediction of MPPFCs in pulsed-power applications. | LI Hua CHEN Yaohong WANG Bowen LI Zhiwei ZHANG Qin LIN Fuchang HE Wei | 2013 | 高电压技术2013，39，8： | 1 |
| 5 | Application of fuzzy clustering method to determining sub-fault planes of earthquake from aftershocks sequence显示文摘Earthquake rupture process generally involves several faults activities instead of a single fault.A new method using both fuzzy clustering and principal component analysis makes it possible to reconstruct three dimensional structure of involved faults in earthquake if the aftershocks around the active fault planes distribute uniformly.When seismic events are given,the optimal faults structures can be determined by our new method.Each of sub-fault planes is fully characterized by its central location,length,width,strike and dip.The resolution determines the number of fault segments needed to describe the earthquake catalog.The higher the resolution,the finer the structure of the reconstructed fault segments.The new method successfully reconstructs the fault segments using synthetic earthquake catalogs.By taking the 28 June 1992 Landers earthquake occured in southern California as an example,the reconstructed fault segments are consistent with the faults already known on geological maps or blind faults that appeared quite frequently in longer-term catalogs. | Fuchang Wang Yongge Wan Huirong Cao Zhitong Jin Qingqing Ren | 2012 | Earthquake Science2012，25，2： | 1 |
| 6 | A new ampero- metric biosensor for hydrogen peroxide determination based on HRP-nanogold-PTH-nanogold-modified car- bon paste electrodes 显示文摘 | Wang Fuchang Yuan Ruo Chai Yaqin | 2007 | Eur Food Res Technol2007，225，1： | 1 |
| 7 | Partitioning of elements from coal by different solvents extraction显示文摘 | Wenfeng Wang Yong Qin Fuchang Qian Longfang Ye Weiduo Hao Li Yuan Fali Jin | 2014 | Fuel2014，，： | 1 |
| 8 | Design of the solar X-ray detector for the Macao Science Satellite-1B显示文摘The solar X-ray detector(SXD)onboard the Macao Science Satellite-1B was designed to monitor solar flare bursts and to study the solar activity in the 25th solar cycle.The SXD includes two parts:a soft X-ray detection unit and a hard X-ray detection unit.Both the soft X-ray detection unit and the hard X-ray detection unit include two collimators,two X-ray detectors(a silicon drift detector and a cadmium-zinc-telluride detector),and a processing circuit.Compared with similar instruments,the energy range of the SXD is wider(1–600 ke V)and the energy resolution is better(150 e V at 5.9 ke V,12%at 59.5 ke V,and 3%at 662 keV). | YongQiang Shi LianSheng Li JianWu Chen FuChang Zuo XiaoPing Zhang ZhiWu Mei Li Wang Keke Zhang | 2023 | Earth and Planetary Physics2023，7，1： | 1 |
| 9 | Pyridoxine regulates hair follicle development via the PI3K/Akt, Wnt and Notch signalling pathways in rex rabbits显示文摘This study was conducted to evaluate the effect of pyridoxine on the development of hair follicles in Rex rabbits and the underlying molecular mechanism.Two hundred 3-month-old Rex rabbits were randomly divided into 5 groups and fed diets supplemented with 0,5,10,20,or 40 mg/kg pyridoxine.The hair follicle density on the dorsal skin and the gene and protein expression levels of components of the phosphoinositide 3-kinase(PI3 K)/protein kinase B(PKB or Akt),Wnt,Notch and bone morphogenetic protein(BMP)signalling pathways were measured.In addition,free hair follicles were isolated from Rex rabbits and cultured with pyridoxine in vitro to measure hair shaft growth.Furthermore,dermal papilla cells(DPC)were isolated from the skin of Rex rabbits and cultured with pyridoxine in vitro to measure the gene and protein expression levels of components of the PI3 K/Akt,Wnt,Notch and BMP signalling pathways.The results showed that the addition of dietary pyridoxine significantly increased the total follicle density,secondary follicle density,and secondary-to-primary ratio(S/P,P<0.05),that the growth ratio of hair stems was promoted by pyridoxine in basic culture medium,and that the growth length of tentacle hair follicles cultured in the pyridoxine group was longer than that in the control group(P<0.05).In addition,pyridoxine changed the DPC cycle progression and promoted cell proliferation,and appropriate concentrations of pyridoxine(10 and 20μmol/L)significantly inhibited cell apoptosis(P<0.05).Pyridoxine significantly affected the gene expression of components of the PI3 K/Akt,Wnt and Notch signalling pathways in the skin and DPC of Rex rabbits(P<0.05),increased the levels of phosphorylated catenin beta 1(CTNNB1)and Akt,and decreased the level of phosphorylated glycogen synthase kinase 3 beta(GSK-3β)(P<0.05).Therefore,the molecular mechanism by which pyridoxine promotes hair follicle density in Rex rabbits probably occurs through activation of the PI3 K/Akt,Wnt and Notch signalling pathways,prolonging hair follicle growth and delaying the onset of telogen. | Gongyan Liu Guangmin Cheng Yongcui Zhang Shuxia Gao Haitao Sun Liya Bai Shu Li Yanli Zhu Chunyang Wang Fuchang Li | 2021 | Animal Nutrition2021，，4： | 1 |
| 10 | Reliability criterion of film capacitor based on moisture diffusion in encapsulation显示文摘The current reliability criterion(RC)of the film capacitor(FC)is usually a fixed value,which does not consider the staged capacitance loss caused by moisture diffusion under high temperature and/or high humidity.The expected lifetime of capacitors would deviate far from the actual one.The moisture diffusion process of the encapsulated FC is ana-lysed based on Fick's second law.In order to investigate the capacitance loss and moisture diffusion characteristics,4 types of film capacitors are stressed with AC voltage under different temperatures and humidities.Based on the staged analysis of the capacitance and weight gain curves,the effect of moisture diffusion on capacitance loss is revealed.Results indicate that the linear stage of capacitance loss corresponds to the Fickian moisture diffusion stage of weight gain.The effect of voltage on FC aging is the most significant.The capacitance loss rate increases by 301%when the voltage rises by 30%.An RC calculation method of the FC is further proposed,which could also screen the encap-sulation quality and shorten the aging test duration by at least 80%. | Zheng Li Hua Li Tian Qiu Fuchang Lin Yucheng Wang | 2023 | High Voltage2023，8，6： | 1 |
| 11 | Neglected Aspects of SARS-CoV-2 Aerosol Transmission in Bathrooms of Multistory and High-Rise Buildings—Beijing Municipality,China,October 2022显示文摘Summary What is already known about this topic?There is a toilet flush-soil stack-floor drain pathway of aerosol transmission in multistory and high-rise buildings,but the influencing factors are not completely clear.What is added by this report?The poor airtightness of the connecting parts of the floor drain,as well as pressure fluctuations in the sewage pipe during toilet flushing caused by blockage of the soil stack vent,may lead to the cross-floor transmission of viral aerosols through the soil stack and floor drains. | Keyang Lyu Qin Wang Xia Li Zhuona Zhang Xiaoning Zhao Yunpu Li Zhigang Tang Longjian Li Fuchang Deng Xiaoyu Zhang Kaiqiang Xu Rong Zhao Dongqun Xu | 2023 | China CDC weekly2023，5，1： | 0 |
| 12 | Research on the dynamic response of connecting rod bearing bush wear of reciprocating machine under variable working conditions显示文摘As a type of reciprocating machine, the reciprocating compressor has a compact structure and many excitation sources.Once the small end bearing of the connecting rod is worn, it is easy to cause the sintering of the bearing and the abnormal vibration of the body.Based on the characteristics of poor lubrication state and complex force of connecting rod small head bearing, a mixed lubrication model considering oil groove feed was established, and the dynamic simulation of the reciprocating compressor model with lubricated bearings was carried out;considering different speeds and gas load conditions, the law of the impact of the eigenvalues changing with working conditions was explored.The fault simulation experiment was carried out by selecting representative working conditions, which verified the correctness of the simulation method.The study found that two contact collisions between the pin and the bearing bush occurred in one cycle, the collision impact was more severe under the wear fault, and the existence of the gap made the dynamic response more sensitive to the change of working conditions.This research provides ideas for the location and feature extraction of fault symptom signal angular segments in the process of complex measured signal processing. | 张进杰 SONG Chunyu LEI Fuchang WANG Yao ZHI Haifeng LIU Fengchun | 2023 | High Technology Letters2023，29，2： | 0 |
| 13 | Independent and Interactive Effects of Environmental Conditions on Aerosolized Surrogate SARS-CoV-2-Beijing,China,June to September 2020显示文摘Summary What is already known about this topic?Environmental factors such as temperature and humidity play important roles in the transmission of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)via droplets/aerosols.What is added by this report?Higher relative humidity(61%–80%),longer spreading time(120 min),and greater dispersal distance(1 m)significantly reduced SARS-CoV-2 pseudovirus loads.There was an interaction effect between relative humidity and spreading time.What are the implications for public health practice?The findings contribute to our understanding of the impact of environmental factors on the transmission of SARS-CoV-2 via airborne droplets/aerosols. | Yixin Mao Yueyun Luo Wenda Zhang Pei Ding Xia Li Fuchang Deng Kaiqiang Xu Min Hou Cheng Ding Youbin Wang Zhaomin Dong Raina MacIntyre Xiaoyuan Yao Song Tang Dongqun Xu | 2022 | China CDC weekly2022，4，26： | 0 |
| 14 | Investigation on Rapidly Solidified T15 High Speed Steel Powder and Its Bulk Microcrystalline Material显示文摘InvestigationonRapidlySolidifiedT15HighSpeedSteelPowderandItsBulkMicrocrystallineMaterialYuHui;DingFuchang;WangEnke;V.N.DiGia... | Yu Hui Ding Fuchang Wang Enke V.N.DiGiambattista Qi Jiazhong | 1996 | Journal of Iron and Steel Research(International)1996，3，1： | 0 |
| 15 | Financial Support for Rural Cooperative Economy in China Based on Grey Correlation Analysis显示文摘This paper firstly analyzed current situations of financial support for rural cooperative economy in China and tested the correlation between rural finance and rural cooperative economy using the grey correlation analysis method. Results indicate that there is a close relationship between amount,structure and efficiency of rural finance and development of rural cooperative economy. The amount of rural finance has the largest promotion function to development of rural cooperative economy,the next is rural finance structure,and the least is efficiency of rural finance. Based on research conclusions,it came up with pertinent policy recommendations. | Fuchang XU Chuandong WANG | 2015 | Asian Agricultural Research2015，7，7： | 0 |
| 16 | In-Orbit Calibration and Data Analysis of China's First Grazing Incidence Focusing X-Ray Pulsar Telescope显示文摘The grazing incidence focusing X-ray pulsar telescope(iFXPT), as the main payload of the X-ray Pulsar Navigation Test Satellite(XPNAV-1), will have great significance on China's space scientific exploration and X-ray pulsar navigation. With PSR B0531+21(Crab Pulsar) as the observation target, the pulsar profile has been recovered based on the data obtained by iFXPT, realizing the main objective of 'observing' PSR B0531+21 for the first time in China. This payload mainly consists of the Wolter-I X-ray optics, silicon drift detector, magnetic deflector, electronics, high-energy particle shield and high-stability structures. Currently, the iFXPT, with its good in-orbit performance, has obtained a considerable observation data. The effective area, sensitivity and energy response have been calibrated both on ground and in-orbit, demonstrating a high degree of consistency. Meanwhile, the in-orbit observation data and information for pulsar navigation has also been analyzed simultaneously. As a result, the feasibility of the exploration scheme and the performance of the telescope have been fully validated. | LV Zhengxin MEI Zhiwu DENG Loulou LI Liansheng SHI Yongqiang CHEN Jianwu ZUO Fuchang LIU Ke WANG Chunyu ZHANG Jianfu MO Yanan WANG Shuyan ZHAO Yuan | 2017 | Aerospace China2017，18，3： | 0 |
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