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A new technology for coal and gas control based on the in situ stress distribution and the roadway layout

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International Journal of Mining Science and Technology 2012年第2期22卷 145-149页

作者： Yang Wei lin Baiquan Zhai Cheng li Xianzhong Sun Xin Zhang chao Faculty of Safety Engineering China University of Mining&TechnologyXuzhou 221116China State Key Laboratory of Coal Resources and Mine Safety China University of Mining&TechnologyXuzhou 221116China Yuxi Branch of Yunnan Provincial Tobacco Company Yuxi 653100China

An auxiliary gas control technology is described that can reduce coal and gas outburst accidents when there is no existing protective coal seam and gas pre-draining is not *** simulation methods were used to study the stress distribution ahead of the roadway face for different in situ *** results from the simulation can then provide a new gas control *** results show that a high stress concentration,high stresses,and high displacement gradients appear ahead of the roadway face when the maximum in situ stress is aligned perpendicular to the roadway *** risk of gas outburst is higher when the stresses decrease rapidly over distance and when the release of more energy occurs immediately after driving the *** gas outburst risk is much smaller when the in situ stress is aligned parallel to the roadway *** design of the coal mine most of the coal roadways should be arranged to parallel the maximum in situ *** will decrease the outburst risk in general and may be considered a new gas outburst prevention method.

关键词： In situ stressRoadwayCoalmineCoal and gas outburstStress direction

Refractive index sensor based on high-order surface plasmon resonance in gold nanofilm coated photonic crystal fiber

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Chinese Physics B 2019年第9期28卷 212-219页

作者： Zhen-Kai fan Shao-Bo fang Shu-Guang li Zhi-Yi Wei School of Information Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050018China State Key Laboratory of Metastable Materials Science and Technology and Key Laboratory of Microstructural Material Physics of Hebei ProvinceSchool of ScienceYanshan UniversityQinhuangdao 066004China Institute of Physics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

We propose a novel kind of wide-range refractive index optical sensor based on photonic crystal fiber(PCF) covered with nano-ring gold *** refractive index sensing performance of the PCF sensor is analyzed and simulated by the finite element method(FEM).The refractive index liquid is infiltrated into the cladding air hole of the *** comparing the sensing performance of two kinds of photonic crystal fiber structures, a wide range and high sensitivity structure is *** surface plasmon resonance(SPR) excitation material is chose as gold, and large gold nanorings are embedded around the first cladding air hole of the *** higher order surface plasmon modes are generated in this designed optical fiber *** resonance coupling between the fundamental mode and the 5 th order surface plasmon polariton(SPP)modes is excited when the phase matching condition is ***, the 3 rd loss peaks appear obvious red-shift with the increase of the analyte refractive index, which shows a remarkable polynomial fitting *** fitnesses of two structures are 0.99 and 0.98, *** the range of refractive indices is from 1.40 to 1.43, the two kinds of sensors have high linear sensitivities of 1604 nm/RIU and 3978 nm/RIU, respectively.

关键词： surface plasmon resonance photonic crystal fiber sensor

Transformation and dissolution of second phases during solution treatment of an Al-Zn-Mg-Cu alloy containing high zinc

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Rare Metals 2018年第5期37卷 376-380页

作者： Kai Wen Bai-Qing Xiong Yun-Qiang fan Yong-An Zhang Zhi-Hui li Xi-Wu li Feng Wang Hong-Wei liu State Key Laboratory of Nonferrous Metals and Processes General Research Institute for Nonferrous MetalsBeijing 100088 China

The transformation and dissolution of Mg（Zn, Cu, Al）2 phase during solution treatment of an Al-Zn-Mg-Cu alloy containing high zinc were investigated by means of optical microscopy （OM）, scanning electron microscopy （SEM）, energy-dispersive X-ray spectrometry （EDX） and X-ray diffraction （XRD）. The results show that solution temperature is the main factor influencing phase dissolution. With solution temperature increasing, the content of residual phases decreases. Phase transformation from Mg（Zn, Cu, Al）2 to S（Al2CuMg） occurs under solution temperature of 450, 460 and 465 ℃. Mg（Zn, Cu, Al）2 phase is directly dissolved into the matrix under solution temperature of 470 and 475 ℃, and no S（Al2CuMg） phase transformed from Mg（Zn, Cu, Al）2 phase is observed. The formation of S（Al2CuMg） phase is mainly controlled by Zn elemental diffusion. The mechanism of transformation and dissolution of second phases was investigated. At low temperature, the dissolution of Zn is faster than that of Mg and Cu, resulting in an appropriate condition to form S（Al2CuMg） phase. At high temperature, the dissolution of main alloying elements has no significant barrier among them to form S（Al2CuMg） phase.

关键词： Al-Zn-Mg-Cu alloy Microstructure Solution treatment Phase transformation

GaP-Based High-Efficiency Elliptical Cylinder Metasurface in Visible light

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Chinese Physics Letters 2020年第5期37卷 98-101页

作者： Shuai-Meng Wang Xiao-Hong Sun De-li Chen fan Wu Henan Key Laboratory of Laser and Opto-electric Information Technology School of Information EngineeringZhengzhou UniversityZhengzhou 450052

Compared with the metal antenna metasurface,the dielectric metasurface has better optical characteristics and smaller ohmic loss in the optical band,which makes it *** elliptical cylindrical nanostructured antenna is designed using GaP with excellent transmission characteristics in the visible *** structure has a transmjssion efficiency of up to 0.96 in the visible light *** on the Pancharatnam-Berry(PB)phase control principle,the metasurface structure composed of the antennas is studied,and its abnormal refraction metasurface and focusing meta-lens are *** is a highly ef Rcient sub-wavelength structure,and promises great potential for the applications of circular polarization optics,nanolithography,dense storage and biophotonics.

关键词： visible cylindrical Berry

Factors affecting production of nonaqueous peracetic acid in tubular packed reactors

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Frontiers of Chemical Science and Engineering 2008年第2期2卷 196-203页

作者： Tengyun ZHANG li ZHONG Karl T.CHUANG Hongbo fan Department of Chemical&Biological Engineering Dongguan University of TechnologyDongguan 523808China College of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510640China Department of Chemical&Materials Engineering University of AlbertaEdmontonAB CanadaT6G 2G6

The synthesis of nonaqueous peracetic acid inacetone by acetaldehyde oxidation was carried out in atubular packed reactor. The influencing factors of thereacting system including packing material, oxygen carrier,and reactor configuration were investigated. Theresults show that porous materials are inappropriate forperacetic acid synthesis and only non porous materialwith appropriate surface area can provide good peraceticacid selectivity and yield. Among the six kinds of packingmaterial investigated, SA-5118 is the best one. As oxidizinggas, pure oxygen is superior to air. The optimumlength-to-inner diameter ratio of the reactor is about *** the proper reaction conditions, the highest peraceticacid yield of 84.15% and the highest selectivity of93.34% can be achieved which indicates that the novelreacting system is effective and economical for nonaqueousperacetic acid production.

关键词： back mixing tubular packed reactor peracetic acid acetaldehyde

Integration of association and computational methods reveals functional variants of LEPR gene for abdominal fat content in chickens

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Journal of Integrative Agriculture 2021年第10期20卷 2734-2748页

作者： li Yu-dong WANG Wei-jia li Zi-wei WANG Ning XIAO fan GAO Hai-he GUO Huai-shun li Hui WANG Shou-zhi Key Laboratory of Chicken Genetics and Breeding Ministry of Agriculture and Rural AffairsHarbin 150030P.R.China Key Laboratory of Animal Genetics Breeding and ReproductionEducation Department of Heilongjiang ProvinceHarbin 150030P.R.China School of Animal Sciences and Technology Northeast Agricultural UniversityHarbin 150030P.R.China Fujian Sunnzer Biotechnology Development Co. Ltd.Guangze 354100P.R.China

Leptin receptor(LEPR)plays a vital role in obesity in humans and *** objective of this study is to assess LEPR functional variants for chicken adipose deposition by integration of association and in-silico analysis using a unique chicken population,the Northeast Agricultural University broiler lines divergently selected for abdominal fat content(NEAUHLF).Five online bioinformatics tools were used to predict the functionality of the single nucleotide polymorphisms(SNPs)in coding ***,the possible structure–function relationship of high confidence SNPs was determined by bioinformatics analyses,including the conservation and stability analysis based on amino acid residues,prediction of protein ligand-binding sites,and the superposition of protein tertiary ***,we analyzed the association between abdominal fat traits and 20 polymorphisms of chicken LEPR *** integrated results showed that rs731962924(N867I)and rs13684622(C1002R)could lead to striking changes in the structure and function of proteins,of which rs13684622(C1002R)was significantly associated with abdominal fat weight(AFW,P=0.0413)and abdominal fat percentage(AFP,P=0.0260)in ***,we are of the opinion that rs13684622(C1002R)may be an essential functional SNP affecting chicken abdominal fat deposition,and potentially applied to improvement of broiler abdominal fat in molecular marker-assisted selection(MAS)***,the coupling of association with computer electronic predictive analysis provides a new avenue to identify important molecular markers for breeders.

关键词： chicken LEPR nsSNPs bioinformatics tools abdominal fat content association analysis

Construction of Complete Orthogonal Genuine Multipartite Entanglement State

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Chinese Physics Letters 2019年第6期36卷 1-5页

作者： Feng-lin Wu Si-Yuan liu Wen-li Yang Heng fan Institute of Modern Physics Northwest University Shaanxi Key Laboratory for Theoretical Physics Frontiers Institute of Physics Chinese Academy of Sciences

With the development of quantum information processing, multipartite entanglement measures are needed in many cases. However, there are still no complete orthogonal genuine multipartite entanglement(GME) bases available as Bell states to bipartite systems. To achieve this goal, we find a method to construct complete orthogonal GME states, and we exclude many equivalent states by leveraging the group theory. We also provide the case of a 3-order 3-dimensional Hilbert space as an example and study the application of general results in the dense coding scheme as an application. Moreover, we discuss some open questions and believe that this work will enlighten extensive studies in this field.

关键词： genuine multipartite entanglement(GME) quantum information processing multipartite entanglement measures

Fertility and biochemical activity in sodic soils 17 years after reclamation with flue gas desulfurization gypsum

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Journal of Integrative Agriculture 2021年第12期20卷 3312-3322页

作者： ZHAO Yong-gan WANG Shu-juan liU Jia ZHUO Yu-qun li Yan ZHANG Wen-chao Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084P.R.China Beijing Engineering Research Center for Ecological Restoration and Carbon Fixation of Saline-Alkaline and Desert Land Beijing 100084P.R.China Shanxi Research Institute for Clean Energy Tsinghua UniversityTaiyuan 030032P.R.China Tsinghua Agriculture Co. Ltd.Beijing 100084P.R.China

Previous studies have mainly focused on changes in soil physical and chemical properties to evaluate the reclamation of sodic soils using flue gas desulfurization(FGD)***,information on the effects of this reclamation method on microbial-based indicators of soil quality is limited,particularly after many years of FGD gypsum *** study aimed to investigate the long-term effects of FGD gypsum on soil organic carbon(SOC),nutrients,microbial biomass and enzyme *** were collected from soils of three exchangeable sodium percentage(ESP)classes(i.e.,low-,middle-and hjgh-ESP classes of 6.1-20,20-30 and 30-78.4%,respectively)17 years after FGD gypsum treatment in Inner Mongolia,*** across the three ESP classes,FGD gypsum application increased the SOC contents at the 0-20 and 20-40-cm soil depths by 18 and 35%,respectively,and increased available potassium at the 0-20-cm soil depth by 51%compared with the no-gypsum *** microbial biomass carbon and microbial biomass nitrogen contents at the 20-40-cm soil depth increased by 69 and 194%,respectively,under FGD *** in the high-ESP class,urease activities in the 0-40 cm soil profile were significantly higher in the FGD gypsum treatments than in the controls.A significant increase in alkaline phosphatase activity was concentrated in the 20-40 cm soil layer;few classes showed significant increases in catalase and invertase activities in the 0-20 cm soil *** correlation analysis showed that increases in soil fertility and biological activity could be attributed to reductions in electrical conductivity,pH and ESP caused by FGD gypsum *** results confirm that FGD gypsum application is a viable strategy for reclaiming sodic soils due to its positive effects on soil fertility and biochemistry and that it may contribute to soil ecosystem sustainability.

关键词： gypsum organic carbon nutrient pools microbial biomass enzyme activity

Efficacy of Wen-Luo-Tong on Peripheral Neuropathy Induced by Chemotherapy or Target Therapy: A Randomized, Double-Blinded, Placebo-Controlled Trial

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Chinese Journal of Integrative Medicine 2022年第7期28卷 579-585页

作者： DENG Bo JIA li-qun WAN Dong-gui WANG Bao-yi CHENG Zhi-qiang DENG chao Center of Science and Technology China-Japan Friendship HospitalBeijing 100029China Integrative Oncology Department of Chinese Medicine and Western Medicine China-Japan Friendship HospitalBeijing 100029China

Objective: To evaluate the efficacy of Wen-Luo-Tong Granules(WLT) local administration in the treatment of patients with peripheral neuropathy(PN) induced by chemotherapy or target therapy. Methods: This study is a randomized, double-blinded, and placebo-controlled trial. Seventy-eight patients with PN induced by chemotherapy or target therapy were enrolled from China-Japan Friendship Hospital between July 2019 and January 2020. They were randomly assigned to WLT(39 cases) and control groups(39 cases) using a block randomization method. The WLT group received WLT(hand and foot bath) plus oral Mecobalamin for 1 week, while the control group received placebo plus oral Mecobalamin. The primary endpoint was PN grade evaluated by the National Cancer Institute-Common Toxicity Criteria for Adverse Events(NCI-CTCAE). The secondary endpoints included quantitative touch-detection threshold, neuropathy symptoms, Quality of life QuestionnaireChemotherapy Induced Peripheral Neuropathy(QLQ-CIPN20), and Quality of life Questionnaire-Core30(QLQ-C30). Results: After treatment, the PN grade in the WLT group was significantly lower than that in the control group(1.00±0.29 vs. 1.75±0.68, P<0.01). The total effective rate in the WLT group was significantly higher than that in the control group(82.05% vs. 51.28%, P<0.01). Compared with the control group, the touchdetection thresholds at fingertips, neuropathy symptom score, QLQ-CIPN 20(sensory scale, motor scale, autonomic scale, and sum score), and QLQ-C30(physical functioning, role functioning, emotional functioning, and global health) in the WLT group significantly improved after treatment(P<0.01 or P<0.05). Conclusion: WLT local administration was significantly effective in the treatment of patients with PN induced by chemotherapy or target therapy.(Trial registration No. ChiCTR1900023862)

关键词： peripheral neuropathy chemotherapy target therapy Chinese medicine Wen-Luo-Tong randomized controlled trial