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| 1 | Process mineralogy of Weishan rare earth ore by MLA显示文摘Mineral liberation analyser(MLA) was applied to quantitatively analyze the rare earth ore from Weishan in Shandong. Mineralogy parameters, such as mineral composition, occurrence states of rare earth elements(REEs) and valuable elements, mineral embedded grain size distribution, mineral association and liberation, are obtained. Results show that the contents of REEs and other valuable elements mainly contained in the ore were La 1.02 wt%, Ce 4.29 wt%, Pr 0.34 wt%, Nd 0.84 wt%, Sr 3.4 wt%and Ba 26.53 wt%, respectively. The REEs mainly occur in bastnaesite and carbocernaite in the form of independent mineral and the contents of bastnaesite and carbocernaite in the ore were 5.96 wt% and12.30 wt%, respectively. 67.34% of strontium occurs in carbocernaite and the rest occurs in celestobarite and strontianite mineral. 92.71% of barium occurs in barite. Liberation of main rare-earth minerals such as bastnaesite and carbocernaite is more than 80% when the grinding fineness is78.42% passing 74 μm. The research results could be employed to provide detailed basic theoretical data for further improvement of the beneficiation process flow and the processing index of rare earth ore, the recycling of other valuable minerals and the comprehensive utilization of tailings. | Caili Xu Chengbin Zhong Renliang Lyu Yaoyang Ruan Zhenyue Zhang Ru'an Chi | 2019 | Journal of Rare Earths2019，37，3： | 12 |
| 2 | Enhancing mineral liberation of a Canadian rare earth are with microwave pretreatment显示文摘Liberation. as an attribute of mineralogy characteristic. whose impacts on finely disseminated Canadian rare earth ore was studied with microwave pretreatment. Samples of a light rare earth ore along with mostly ankerite and biotite as dominant gangue minerals as well as bastnaesite, strontianite and goethite as dominated minerals were exposed to further comminution by ball mill and microwave pretreatment fragmentation. Mineralogical characteristics were analyzed by using a mineral liberation analyzer(MLA).The results indicated that tight association mutually penetrates among dominated minerals in the range size of -300 + 212 μm and 212 + 150 μm and gangue minerals in the form of adjacent type. fine vein type. shell type and packing type. Temperature in the ore samples pre-treated by microwave can rapidly rise to 250 ℃ with microwave power of 0-1.5 kW and microwave time of 0-2 min. Applying the microwave pretreatment merely reduces the hardness of the ore causing the fracture of rare earth ore, but this does not transform or change the original mineralogy characteristics of the ore samples. On the basis of above study. the liberation value of bastnaesite, strontianite and goethite with microwave pretreatment is greater than with conventional comminution when the liberation class is above 75%. The distribution of particle size of rare earth ore samples is better with microwave pretreatment than with conventional comminution for particle size of 7.4 × 10^(-5) m. With microwave pretreatment, the theoretical grade-recovery of bastnaesite. strontianite and goethite in the rare earth ore attains better results than with conventional comminution at a given grade. | Chengbin Zhong Caili Xu Renliang Lyu Zhenyue Zhang Xiaoyan Wu Ru'an Chi | 2018 | Journal of Rare Earths2018，36，2： | 10 |
| 3 | Improving the performance of a thermoelectric power system using a flat-plate heat pipe显示文摘A gravitational flat-plate heat pipe is designed and fabricated in this paper to serve as a heat spreader to diffuse the local heat source to the hot side of the thermoelectric power module.Based on this, an experimental test for the thermoelectric power generation system is conducted to study the influences of the heat spreader on the temperature uniformity and power generation performance when exposing to a local heat source.In addition,the effects of the heating power, inclination angle, and local heat source size on the power generation performance of the thermoelectric power module using a flat-plate heat pipe as a heat spreader are examined and compared with that using a metal plate.The results indicate that the gravitational flat-plate heat pipe has considerable advantages over the metal plate in the temperature uniformity.The superiority of temperature uniformity in the improvement of power generation performance for the thermoelectric power system using a heat pipe is demonstrated.Particularly, the heat pipe shows good adaptability to placement mode and the local heat source size, which is beneficial to the application in the thermoelectric power generation. | Suchen Wu Yiwen Ding Chengbin Zhang Dehao Xu | 2019 | Chinese Journal of Chemical Engineering2019，27，1： | 6 |
| 4 | Effects of nicotinamide and riboflavin on the biodesulfurization activity of dibenzothiophene by Rhodococcus erythropolis USTB-03显示文摘Rhodococcus erythropolis USTB-03 经由 DBT 作为一个结束产品在被变换成 2-hydroxybiphenyl (2HBP ) 的一条硫特定的小径是为 dibenzothiophene (DBT ) 的 biodesulfurization 的有希望的菌株。硫上的菸碱和核黄素的效果由 R.erythropolis USTB-03 的 DBT biodesulfurization 的特定的活动(SA ) 被调查。菸碱和核黄素被发现提高 SA 的表示,它以前没被报导。当 R.erythropolis USTB-03 在包含 10.0 mmol 的菸碱或 50.0 亩摩尔的核黄素的媒介上是成年的时, SA 从 68.0 左右被提起到超过 130 mmol 2HBP/(kg 干燥 cells-h ) 。当 R.erythropolis USTB-03 面对 5.0 mmol 的两菸碱和 25.0 umol 的核黄素是成年的时, SA 进一步被增加到 159.0 mmol 2HBP/(kg 干燥 cells-h ) 。这被建议黄素的减少的形式的生物合成单音的核苷酸(FMNH2 ) ,为 biodesulfurization 酶 Dsz C 和 A 的活动的必要辅酶,可能被菸碱和核黄素提高,它为 R.erythropolis USTB-03 的增加的 SA 负责。 | YAN Hai SUN Xudong XU Qianqian MA Zhao XIAO Chengbin Ning Jun | 2008 | Journal of Environmental Sciences2008，20，5： | 4 |
| 5 | Photolysis of polycyclic aromatic hydrocarbons on soil surfaces under UV irradiation显示文摘Photolysis of some polycyclic aromatic hydrocarbons (PAHs) on soil surfaces may play an important role in the fate of PAHs in the environment.Photolysis of PAHs on soil surfaces under UV irradiation was investigated.The effects of oxygen,irradiation intensity and soil moisture on the degradation of the three PAHs were observed.The results showed that oxygen,soil moisture and irradiation intensity enhanced the photolysis of the three PAHs on soil surfaces.The degradation of the three PAHs on soil surfaces is related to their absorption spectra and the oxidation-half-wave potential.The photolysis of PAHs on soil surfaces in the presence of oxygen followed pseudo first-order kinetics.The photolysis half-lives ranged from 37.87 days for benzo[a]pyrene to 58.73 days for phenanthrene.The results indicate that photolysis is a successful way to remediate PAHs-contaminated soils. | Chengbin Xu Dianbo Dong Xuelian Meng Xin Su Xu Zheng Yaoyao Li | 2013 | Journal of Environmental Sciences2013，25，3： | 2 |
| 6 | Hollow Bio-derived Polymer Nanospheres with Ordered Mesopores for Sodium-Ion Battery显示文摘Bio-inspired hierarchical self-assembly provides elegant and powerful bottom-up strategies for the creation of complex materials.However,the current self-assembly approaches for natural bio-compounds often result in materials with limited diversity and complexity in architecture as well as microstructure.Here,we develop a novel coordination polymerization-driven hierarchical assembly of micelle strategy,using phytic acid-based natural compounds as an example,for the spatially controlled fabrication of metal coordination bio-derived polymers.The resultant ferric phytate polymer nanospheres feature hollow architecture,ordered meso-channels of^12 nm,high surface area of 401 m2 g−1,and large pore volume of 0.53 cm3 g−1.As an advanced anode material,this bio-derivative polymer delivers a remarkable reversible capacity of 540 mAh g−1 at 50 mA g−1,good rate capability,and cycling stability for sodium-ion batteries.This study holds great potential of the design of new complex bio-materials with supramolecular chemistry. | Yan Ai Yuxiu You Facai Wei Xiaolin Jiang Zhuolei Han Jing Cui Hao Luo Yucen Li Zhixin Xu Shunqi Xu Jun Yang Qinye Bao Chengbin Jing Jianwei Fu Jiangong Cheng Shaohua Liu | 2020 | Nano-Micro Letters2020，12，3： | 1 |
| 7 | EXPRESSION OF CALCITONING GENE-RELATED PEPTIDE IN VASCULAR SMOOTH MUSCLE CELLS BY RETROVIRUS-MEDIATED GENE TRANSFER显示文摘Background:The contemporary treatment of coronary athero-occlusive disease bypercutaneous transluminal coronary angioplasty is hampered by maladaptive woundhealing,resulting in significant failure rates.Morbid sequelae include smooth musclecell(SMC)hyperplesia and restenosis due to vascular neointimal formation.Calcitoningene-related peptide(CGRP)has been proposed as a potential therapeutic neuopeptide forintimal hyperplastic vascular disease.Methods and Results:In this study,we investigated CGRP gene expression in culturedrat thoracic arterial smooth muscle cells(SMCs)A replication-defective,recombinantretrovirus containing human α-CGRP cDNA(termed pRCGRP)was constructed and usedto infect SMCs in culture.Following selection with G418,cells traneduced by pRCGRPwere found to express CGRP and stable transfer of CGRP in SMCs was achieved withretroviral vector.CGRP gene expression was observed only when cultured SMCs weretransduced with vectors containing the CGRP cDNA No evidence of similar geneexpression was observed in nontranfected or empty vector transfected SMCs CGRPexpressed in the transduced SMCs was secreted into culture medium and was detected byradioimmunoassay(RIA).The highest level of CGRP gene product reached 18.2±0.6pM,whereas that of normal and control group were undectable.Conclusions:The fact that a recombinant gene can be readily inserted and efficientlyexpressed in vascular smooth muscle cells suggests that CGRP gene may be served as apromising candidate gene for gene therapy in atharosclerosis and restenosis.Retroviralmediated CGRP gene transfer may he used to treat atherosclerosis and restenosis. | Junfeng CUI Xiaofeng JIN Tong Zhang Yuqing HUO Chengbin XU people’s Hospital,Beijing Medical University,Beijing 100044,China Address for correspondence:Professor Xu Cheng-bin,Department of Cardiology,People’s Hospital,Beijing Medical Universy,Beijing 100044,Tel:68314422-5347 | 1998 | 中国介入心脏病学杂志1998，6，4： | 1 |
| 8 | Loss of AtPDR11,a plasmamembrane-localized ABC transporter, confers paraquat tolerancein Arabidopsis thaliana显示文摘 | XI Jing XU Ping XIANG Chengbin | 2012 | Plant 72012，69，5： | 1 |
| 9 | Fabrication and optical characteristics of thick GeO2 sol gel coatings显示文摘 | JING CHENGBIN HOU JINXIA XU XINGUANG | 2007 | Optical Material2007，50，： | 1 |
| 10 | High-rate CH_(4)-to-C_(2)H_(6) photoconversion enabled by Au/ZnO porous nanosheets under oxygen-free system显示文摘Photocatalytic CH_(4) coupling into high-valued C_(2)H_(6) is highly attractive,whereas the photosynthetic rate,especially under oxygen-free system,is still unsatisfying.Here,we designed the negatively charged metal supported on metal oxide nanosheets to activate the inert C-H bond in CH_(4)and hence accelerate CH_(4) coupling performance.As an example,the synthetic Au/ZnO porous nanosheets exhibit the C_(2)H_(6) photosynthetic rate of 1,121.6μmol g^(-1)_(cat)h^(-1)and the CH_(4) conversion rate of 2,374.6μmol g^(-1)_(cat)h^(-1) under oxygen-free system,2 orders of magnitude higher than those of previously reported photocatalysts.By virtue of several in situ spectroscopic techniques,it is established that the generated Au^(δ-)and O^-species together polarized the C-H bond,while the Au^(δ-)and O^-species jointly stabilized the CH_(3) intermediates,which favored the coupling of CH_(3) intermediate to photosynthesize C_(2)H_(6) instead of overoxidation into CO_(x).Thus,the design of dual active species is beneficial for achieving high-efficient CH_(4)-to-C_(2)H_(6) photoconversion. | Kai Zheng Xiaojing Zhang Jun Hu Chengbin Xu Juncheng Zhu Jing Li Mingyu Wu Shan Zhu Li Li Shumin Wang Yumei Lv Xin He Ming Zuo Chengyuan Liu Yang Pan Junfa Zhu Yongfu Sun Yi Xie | 2024 | Science China Chemistry2024，67，3： | 0 |
| 11 | Developmental Temporal Patterns and Molecular Network Features in the Transcriptome of Rat Spinal Cord显示文摘The molecular network features of spinal cord development that are integral to tissue engineering remain poorly understood in placental mammals,especially in terms of their relationships with vital biological processes such as regeneration.Here,using a large-scale temporal transcriptomic analysis of rat spinal cord from the embryonic stage to adulthood,we show that fluctuating RNA expression levels reflect highly active transcriptional regulation,which may initiate spinal cord patterning.We also demonstrate that microRNAs(miRNAs)and transcriptional factors exhibit a mosaic profile based on their expression patterns,while differential alternative splicing events reveal that alternative splicing may be a driving force for the development of the node of Ranvier.Our study also supports the existence of a negative correlation between innate immunity and intrinsic growth capacity.Epigenetic modifications appear to perform their respective regulatory functions at different stages of development,while guanine nucleotidebinding protein(G protein)-coupled receptors(including olfactory receptors(ORs))may perform pleiotropic roles in axonal growth.This study provides a valuable resource for investigating spinal cord development and complements the increasing number of single-cell datasets.These findings also provide a genetic basis for the development of novel tissue engineering strategies. | Jian Yang Lili Zhao Sheng Yi Fei Ding Yumin Yang Yan Liu Yongjun Wang Mei Liu Chengbin Xue Lian Xu Leilei Gong Xinghui Wang Yu Zhang Bin Yu Guo-li Ming Xiaosong Gu | 2021 | Engineering2021，7，11： | 0 |
| 12 | A low-power high-quality CMOS image sensor using 1.5 V 4T pinned photodiode and dual-CDS column-parallel single-slope ADC显示文摘This paper presents a low-power high-quality CMOS image sensor(CIS)using 1.5 V 4T pinned photodiode(4T-PPD)and dual correlated double sampling(dual-CDS)column-parallel single-slope ADC.A five-finger shaped pixel layer is proposed to solve image lag caused by low-voltage 4T-PPD.Dual-CDS is used to reduce random noise and the nonuniformity between columns.Dual-mode counting method is proposed to improve circuit robustness.A prototype sensor was fabricated using a 0.11μm CMOS process.Measurement results show that the lag of the five-finger shaped pixel is reduced by 80%compared with the conventional rectangular pixel,the chip power consumption is only 36 mW,the dynamic range is 67.3 dB,the random noise is only 1.55 e^(-)_(rms),and the figure-of-merit is only 1.98 e^(-)·nJ,thus realizing low-power and high-quality imaging. | Wenjing Xu Jie Chen Zhangqu Kuang Li Zhou Ming Chen Chengbin Zhang | 2022 | Journal of Semiconductors2022，43，8： | 0 |
| 13 | Highly-Excited Double Rydberg States of Ytterbium显示文摘By using five-laser resonance excitation in combination with a new detection method,the highly-excited double Rydberg states NLn’l(N≥40,N/n’≥0.5 and L,1<4)of Yb have been observed.The relative excitation strengths between the Δl allowed and forbidden core transitions can be quantitatively measured.Analysis of the spectra has revealed the strong electronic correlation in such highly excited states. | XU Xiangyuan HUANG Wen XU Chengbin XUE Meng CHEN Dieyan | 1994 | Chinese Physics Letters1994，11，7： | 0 |
| 14 | A Multi-Channel CMOS Analog Front-End Interface IC with 157.8 dB Current Detection Dynamic Range显示文摘A high dynamic range and low-noise CMOS(complementary metal-oxide-semiconductor transistor)front-end interface integrated circuit(IC)with multi-channel detection is presented in this paper.Two different current detection channels,composed of a trans-impedance amplifier(TIA)and an integrator-differentiator TIA,are used to boost the current detection range.A capacitance-coupled instrument amplifier(CCIA)is also included to realize high precision voltage detection.A fourth-order sigma-delta modulator using a second-order loop filter and a second-order noise shaping integral quantizer is adopted to realize effective number of bits above 16 bits.The presented interface IC is implemented in 0.18-μm CMOS process with supply voltage of 3.3 V,and a proto-type electrochemical sensor platform with miniaturized sensor array is developed to verify the functionality of the interface IC.Measurement results indicate that the designed interface IC achieves 157.8 dB current detection dynamic range,and the measured input-referred current noise and voltage noise floor are 1.04 pA and 58.4 nV within 10 kHz integration bandwidths,respectively. | Kunyu WANG Wenjing XU Chengbin ZHANG Yanjun YANG Man-Kay LAW Li ZHOU Jie CHEN Ming CHEN | 2024 | Chinese Journal of Electronics2024，33，2： | 0 |
| 15 | Remote Terminal Unit Based on Control Area Network显示文摘This paper describes a kind of Remote Terminal Unit(RTU) DR-2000 based on distributed design with Control Area Network(CAN). It also discusses how to select field-bus and how to use field-bus technology in traditional data terminal equipment and the development trend of RTU. | Tao Xiaonong Xu Shiming Shi Yuxiang Liu Chengbin Jiang Yueping (Naming Automation Research Institute) | 1999 | Electricity1999，，2： | 0 |
| 16 | Autoionizing Process of the Double Rydberg State显示文摘Using five-laser resonance excitation and double time-of-flight spectroscopy,the double Rydberg states NLnl(N≤66;n≤85;L,1<4)of Ca have been obtained.The distribution of Ca^(+)Rydberg states,which is from the autoionization of the double Rydberg state has been measured.A novel result has been observed. | XU Chengbin XU Xiangyuan HUANG Wen XUE Ping ZHAO Runchuan ZHU Cheng CHEN Dieyan | 1995 | Chinese Physics Letters1995，12，12： | 0 |
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