摘要：The chinese global carbon dioxide monitoring satellite (Tan Sat) was launched successfully in December2016 and has completed its on-orbit tests and calibration. Tan Sat aims to measure the atmospheric column-averaged dry air mole fractions of carbon dioxide (XCO_2) with a precision of 4 ppm at the regional scale, and in addition, to derive global and regional CO2fluxes. Progress towards these objectives is reviewed and the first scientific results from Tan Sat measurements are presented. Tan Sat on-orbit tests indicate that the Atmospheric Carbon dioxide Grating Spectrometer is in normal working status and is beginning to produce L1B products. The preliminary Tan Sat XCO_2products have been retrieved by an algorithm and compared to NASA Orbiting Carbon Observatory-2 (OCO-2) measurements during an overlapping observation period. Furthermore, the XCO_2retrievals have been validated against eight groundsite measurement datasets from the Total Carbon Column Observing Network, for which the preliminary conclusion is that Tan Sat has met the precision design requirement, with an average bias of 2.11 *** first scientific observations are presented, namely, the seasonal distributions of XCO_2over land on a global scale.

摘要：The chinese global carbon dioxide monitoring satellite(TanSat)was successfully launched in December 2016 and has completed its on-orbit tests and *** aims to measure the atmospheric Carbon Dioxide column-averaged dry air mole fractions(X_(CO_2))with a precision of 4 ppm at the regional scale,and further to derive the CO_2 global and regional *** toward these objectives is reviewed and the first scientific results from TanSat measurements are *** the design phase,Observation System Simulation Experiments(OSSE)on TanSat measurements performed prior to launch measurements using a nadir and a glint alternative mode when considering the balance of stable measurements and reduces the flux uncertainty(64%).The constellation measurements of two satellites indicate an extra 10%improvement in flux inversion if the satellite measurements have no bias and similar *** TanSat on-orbit test indicates that the instrument is stable and beginning to produce X_(CO_2)*** preliminary TanSat measurements have been validated with Total Carbon Column Observing Network(TCCON)measurements and have inter-compared with OCO-2 measurements in an overlap measurement.

摘要：寻找一种性能良好的磁性绝缘材料是发展新型多功能量子自旋电子器件至关重要的基础,但是大多数已知的磁性绝缘材料具有居里温度低(<300 K),铁磁性和结构对称性差的特点.本工作中,我们成功设计并制备了一种新型的磁性绝缘体:Bi8Fe2.8Co0.2-Ti2O20Cl,它具有包含五层钙钛矿层的层状Sillen-Aurivillius结构.令人惊讶的是,此种化合物的居里温度达到了约804 K,比未掺杂的奈耳温度提高超过300 K.此外,由于Sillen层的存在,Bi8Fe2.8-Co0.2Ti2O20Cl具有比所有已知相同Co摩尔比掺杂的Aurivillius氧化物更大的剩余磁化强度.X射线吸收光谱(XAS)和X-光磁性圆二色性(XMCD)光谱分析表明,Bi8Fe2.8Co0.2Ti2O20Cl的铁磁性主要是由Co掺杂引起的FeO6八面体的形变和Fe-O-Co的DzyaloshinskiiMoriya(D-M)相互作用所致.

摘要：The ability to detect conspecific's distress is crucial for animal *** rodent models,observational fear(OF) occurs when one animal perceives another fear related negative emotions,which may model certain behaviors caused by witnessing traumatic experiences in *** cingulate cortex(ACC) has been showed to play a crucial role in ***,cellular and neural circuit basis relating to ACC governing OF is poorly ***,we used Designer Receptor Exclusively Activated by a Designer Drug(DREADD) system to investigate the cell type specific circuit mechanism of ACC in ***,inhibitory hM4D(Gi) designer receptor together with clozapine N-oxide(CNO) injection was applied to inactivate ACC neurons in the observer *** found that,chemogenetic inhibition of ACC resulted in a decreased freezing response in the observer ***,combining PV-ires-Cre mice and Cre-dependent DREADD system,we selectively targeted the ACC parvalbumin(PV) interneurons with the excitatory hM3D(Gq) designer *** of ACC PV interneurons following CNO injection reduced freezing response in the observer mice,while had no effect on freezing response in the demonstrator ***,monosynaptic rabies retrograde tracing revealed that ACC PV interneurons receive inputs from the mediodorsal thalamic nucleus(MD) and the ventromedial thalamic nucleus(VM),both known for their roles in *** together,these findings reveal that ACC activation is important for OF,during which PV interneurons in ACC play an important regulatory *** function of ACC PV interneurons might contribute to the pathology of empathy-deficits related diseases,such as autism and schizophrenia.