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SMESE: A French-China Joint Solar Mission

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空间科学学报 2006年第Z1期26卷 42-45页

作者： CHANG jin gan Weiqun Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China

SMESE (SMall Explorer For the study of Solar Eruptions) is a Franco-Chinese Microsatellite mission. The scientific objectives of SMESE are the study of coronal mass ejections and flares. Its payload consists of three instrument packages: LYOT, DESIR and HEBS. LYOT is com-posed of a Ly-α (121.6 nm) coronagraph, a Ly-α disk imager and a far UV disk imager. DESIR is an infrared telescope working at 35μm and 150μm. HEBS is a high energy burst spectrometer working in X-rays and γ-rays covering the 10keV to 600 MeV range. SMESE will be launched around 2011, providing a unique opportunity of detecting and understanding eruptions at the maximum activity phase of the solar cycle in a wide range of energies.

关键词： SMESE, Solar mission

Roadway layout for recycling residual coal pillar in room-and-pillar mining of thick coal seam

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International Journal of Mining Science and Technology 2015年第5期25卷 729-734页

作者： jin gan Wang Lianguo Zhang Jihua Hu Minjun Duan Ning State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining & Technology Xuzhou 221008 China School of Mechanics & Civil Engineering China University of Mining & Technology Xuzhou 221666 China

In the context of a room-and-pillar mining gob in Shanxi province in China,this paper numerically investigates the stress distribution and deformation rules of roadway surrounding rocks at various locations of residual coal pillars in room-and-pillar mining gobs using software FLAC3 *** is found that the concentrated stress beneath coal pillars distributes in a shape of ellipse.A reasonable roadway layout is then *** this design,it is indicated that roadways should be designed to avoid the supporting zones of pillars with increasing compression and take into account the roof falling and crushing in the upper *** to the surrounding rock deformation characteristics and mining roadway locations as well as the supporting principles of timely support,rock reinforcing,piecewise management and suiting local conditions,a new asymmetric shield supporting plan is *** field surveying results show that this supporting plan can effectively control the roadway rock deformation,thus guarantee the safe and smooth construction of roadways.

关键词： Room-and-pillar mine Residual coal pillar Repeated mining Roadway layout Asymmetric support

Ground pressure and overlying strata structure for a repeated mining face of residual coal after room and pillar mining

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International Journal of Mining Science and Technology 2016年第4期26卷 645-652页

作者： Jiang Bangyou Wang Lianguo Lu Yinlong Sun Xiaokang jin gan State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining and Technology Xuzhou 221008 China

To investigate the abnormal ground pressures and roof control problem in fully mechanized repeated mining of residual coal after room and pillar mining, the roof fracture structural model and mechanical model were developed using numerical simulation and theoretical analysis. The roof fracture characteristics of a repeated mining face were revealed and the ground pressure law and roof supporting condi- tions of the repeated mining face were obtained. The results indicate that when the repeated mining face passes the residual pillars, the sudden instability causes fracturing in the main roof above the old goal and forms an extra-large rock block above the mining face. A relatively stable ＂Voussoir beam＂ structure is formed after the advance fracturing of the main roof. When the repeated mining face passes the old goaf, as the large rock block revolves and touches gangue, the rock block will break secondarily under overburden rock loads. An example calculation was performed involving an integrated mine in Shanxi province, results showed that minimum working resistance values of support determined to be reason- able were respectively 11,412 kN and 10,743 kN when repeated mining face passed through residual pillar and goaf. On-site ground pressure monitoring results indicated that the mechanical model and support resistance calculation were reasonable.

关键词： Residual coal after room and pillar mining Repeated mining Fully mechanized caving face Roof control Support resistance

Phenotypic and genotypic characterization of inflammatory bowel disease in children under six years of age in China

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World Journal of Gastroenterology 2018年第9期24卷 1035-1045页

作者： You-Hong Fang You-You Luo jin-Dan Yu jin-gan Lou Jie Chen Department of Gastroenterology Children's Hospital Zhejiang University School of Medicine

AIM To analyze clinical differences between monogenic and nonmonogenic very-early-onset inflammatory bowel disease(VEO-IBD) and to characterize monogenic IBD phenotypically and genotypically via genetic testing. METHODS A retrospective analysis of children aged 0 to 6 years diagnosed with VEO-IBD in a tertiary hospital in southern China from 2005 to 2017 was performed. Clinical data for VEO-IBD patients were collected, and genetic characteristics were analyzed using whole exome sequencing or target gene panel sequencing. RESULTS A total of 54 VEO-IBD patients were included in this study. A diagnosis of Crohn's disease(CD) or CDlike intestinal manifestations accounted for 72.2% of the VEO-IBD cases. Nine patients(16.7%) were identified by genetic testing as having monogenic IBD. The median age of diagnosis in the monogenic group was younger than that of the nonmonogenic IBD group, at 18 mo(interquartile range(IQR): 4 to 78) and 43.5 mo(IQR: 3 to 173), respectively; the P-value was 0.021. The incidence of perianal disease in the monogenic group was higher than that in the nonmonogenic group(P = 0.001). However, there were no significant differences between weight-forage and height-for-age Z-scores between the two groups, and similar laboratory results were obtained for the two groups. Five patients were found to have IL10 receptor mutation, two patients had chronic granulomatous disease, one patient had common variable immunodeficiency disease, and one patient had X-linked inhibitor of apoptosis protein deficiency. CONCLUSION A high proportion of monogenic IBD was observed in the VEO-IBD group, especially with disease onset before the age of 6 mo. Monogenic IBD and nonmonogenic IBD exhibited similar clinical features. Furthermore, next-generation sequencing played an important role in the diagnosis of monogenic IBD, and IL10 receptor mutation was predominant in this cohort.

关键词： Monogenic very-early-onset inflammatory bowel disease primary immunodeficiency diseases IL10 IL10R

Associated Productions of HZZ and HHZ at Linear Colliders in Large Extra Dimension Model

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Communications in Theoretical Physics 2006年第3期45卷 437-446页

作者： ZHOU Ya-jin MA Wen-gan HAN Liang ZHANG Ren-You JIANG Yi Department of Modern Physics University of Science and Technology of China Hefei 230026 China

In this paper we investigate the effects of the large extra dimensions on the two processes e＋ e-→＋ H^0 Z^0 Z^0 and e^＋e^-→ H^0H^0 Z^0 at linear colliders in both unpolarized and polarized collision modes. We find that the virtual Kaluza-Klein graviton exchange can significantly enhance the cross section from their standard model expectations for these two processes. The results show that the LED effect on the process e＋ e-→＋ H^0 Z^0 Z^0 allows the observation limits on the effective scale Ms to be probed up to 9. 75 TeV and 10.1 TeV in the unpolarized and ＋-（λe＋ =1/2, λe-= -1/2） polarized beam collision modes （with Pe＋ = 0.6, Pe-=0.8）, respectively. For the process e＋ e-→＋ H^0 H^0 Z^0, these limits on Ms can be probed up to 6.06 TeV and 6.38 TeV in the unpolarized and polarized collision modes separately. We find that the λe＋ = 1/2, λe-= -1/2 polarization collision mode in both processe＋ e-→＋ H^0 Z^0 Z^0 and e＋ e-→＋ H^0 H^0 Z^0 may provide a possibility to improve the sensitivity in probing the LED effects.

关键词： large extra dimensions linear collider Higgs boson gauge boson

Nasogastric or nasojejunal feeding in pediatric acute pancreatitis: a randomized controlled trial

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World Journal of Pediatrics 2021年第5期17卷 536-543页

作者： Hong Zhao Yan Han Ke-Rong Peng You-You Luo jin-Dan Yu You-Hong Fang Jie Chen jin-gan Lou Department of Gastroenterology The Children's HospitalZhejiang University School of MedicineHangzhou 310052China National Clinical Research Center for Child Health The Children's HospitalZhejiang University School of MedicineHangzhou 310052China

Background The aim of this study was to compare nasogastric(NG)feeding with nasojejunal(NJ)feeding when treating pediatric patients with acute pancreatitis(AP)..Methods We performed a single-center,prospective,randomized,active-controlled trial involving 77 pediatric patients with AP from April 2014 to December *** patients were randomized into two groups:the NG tube feeding group(34 patients)and the NJ tube feeding group(33 patients).The primary outcome measures included the enteral nutrition intoler-ance,the length of tube feeding time,the recurrent pain of pancreatitis and *** A total of 62 patients with AP(31 patients for each group)came into the final *** differences were found in baseline characteristics,pediatric AP score and computed tomography severity score between the lwo ***(9.7%)patients in the NG group and one(3.2%)patient in the NJ group developed intolerance(relative risk=3.00,95%confidence interval 0.33-27.29,P=0.612).The tube feeding time and length of hospital stay of the NG group were significantly shorter than those of the NJ group(P=0.016 and 0.027,respectively).No patient died in the *** significant differences were found in recurrent pain,complications,nutrition delivery efficacy,and side effects between the two *** NG tube feeding appears to be effective and safe for acute pediatric pancreatitis compared with NJ tube *** addition,high qualifed,large sample sized,randomized controlled trials in pediatric population are needed.

关键词： Acute pancreatitis Enteral nutrition Enteral nutrition intolerance Length of hospital stay Tube feeding time

Aqueous-processed insulating polymer/nanocrystal solar cells with effective suppression of the leakage current and carrier recombination

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Chinese Chemical Letters 2020年第6期31卷 1593-1597页

作者： Henan Sun Nannan Chen Yaohua Wang gan jin Wei Yuan Haizhu Sun Bai Yang College of Chemistry National Local United Engineering Laboratory for Power Batteries.Northeast Normal UniversityChangchun 130024China College of Material and Chemical Engineering Chuzhou UniversityChuzhou 239000China State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China

As one of the most environmentally friendly photovoltaic(PV)conversion equipments,aqueousprocessed CdTe nanocrystal solar cells(NC SCs)have attracted great interest in recent years because of their excellent properties such as high charge-carrier mobility and broad ***,two issues including interfacial recombination and leakage current seriously restrict their *** this paper,insulating polymer poly(vinyl pyrrolidone)(PVP)is introduced into CdTe NC SCs to solve the *** experimental results of transmission electron microscopy(TEM),atomic force micro scopy(AFM)and dark current measurements,etc.,demonstrate the leakage current is effectively suppressed by introducing *** further designing device structure,the reduction of interfacial recombination after introducing PVP is *** strategically taking the advantages of PVP properties(e.g.,water solubility and thermostability),the power conversion efficiency of the devices with PVP is enhanced by almost 37%compared to pure CdTe *** work demonstrates an effective and low-cost method to fabricate NC SCs via aqueous ***,it also proves that appropriate content of insulating polymer is of beneficial in promoting the PV performance.

关键词： Aqueous-processed Polymer Nanocrystal Recombination Leakage current

Preparation of Ligand Free Au NPs/PPV Composites with High Stability and Photo-electric Response

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Chinese Journal of Polymer Science 2015年第2期33卷 215-223页

作者： Fei Zhai Hao-tong Wei Su-mei Zhan gan jin Bai Yang 孙海珠黄宗浩 College of Chemistry Northeast Normal University State Key Laboratory of Supramolecular Structure & Materials College of Chemistry Jilin University

A novel kind of ligand free aurum nanoparticles（Au NPs）/poly（p-phenylene-vinylene）（PPV） composites was prepared via a simple approach. Although there were no ligands coating on the surface of the Au NPs, the Au NPs/PPV precursor composite exhibited excellent stability that no obvious variance was found as long as 6 months at -4 ℃ in aqueous and alcohol mixed solutions. This was attributed to the strong interaction between Au NPs and PPV precursor, which was further strengthened after heat transformation. Fourier transform infrared（FTIR） and Raman spectra showed the interaction between benzene ring in PPV and Au NPs led to the part transformation of the sp2 hybrid orbital into the sp3 one during the composite formation. As a result, the photoluminescence（PL） life time of PPV in the composite was longer than that of pure PPV. The Au NPs/PPV composite exhibited good photo-electric response, indicating their potential application in the area of the photoelectric conversion devices.

关键词： Au Nanoparticle PPV Composite Photo-electric

Velocity-porosity relationships in hydrate-bearing sediments measured from pressure cores,Shenhu Area,South China Sea

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China Geology 2022年第2期5卷 267-275页

作者： Lin Lin Jun Cao jin Qian Jiu-jing Shang Wei Zhang jin-gan Lu jin-qiang Liang Guangzhou Marine Geological Survey China Geological SurveyMinistry of Natural ResourcesGuangzhou 510760China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Institution of Oceanology Chinese Academy of SciencesQingdao 266071China

Evaluating velocity-porosity relationships of hydrate-bearing marine sediments is essential for characterizing natural gas hydrates below seafloor as either a potential energy resource or geohazards *** sites had cored using pressure and non-pressure methods during the gas hydrates drilling project(GMGS4)expedition at Shenhu Area,north slope of the South China *** were cored above,below,and through the gas-hydrate-bearing zone guided with logging-while-drilling analysis *** density and P-wave velocity were measured in each pressure core before *** hydrates volumes in total 62 samples were calculated from the moles of excess methane collected during depressurization *** concentration of methane hydrates ranged from 0.3%to 32.3%.The concentrations of pore fluid(25.44%to 68.82%)and sediments(23.63%to 54.28%)were calculated from the gamma *** regression models of P-wave velocity were derived and compared with a global empirical equation derived from shallow,unconsolidated sediments *** results were close to the global trend when the fluid concentration is larger than the critical *** is concluded that the dominant factor of P-wave velocity in hydrate-bearing marine sediments is the presence of the *** hydrates can reduce the fluid concentration by discharging the pore fluid and occupying the original pore space of sediments after its formation.

关键词： Natural gas hydrates(NGHs) Methane hydrate P-wave velocity Porosity Saturation Pressure-core NGHs exploration trial engineering Oil and gas exploration engineering Shenhu Area South China Sea