目前国内常用的发育评估量表较多,且版本较陈旧,年龄范围受限,本文通过对Griffiths发育评估量表(Griffiths Development Scales)的发展史、国内常用诊断量表的比较及在发育行为疾病中的临床应用进行综述。通过分析该量表在孤独症、注意...目前国内常用的发育评估量表较多,且版本较陈旧,年龄范围受限,本文通过对Griffiths发育评估量表(Griffiths Development Scales)的发展史、国内常用诊断量表的比较及在发育行为疾病中的临床应用进行综述。通过分析该量表在孤独症、注意力缺陷多动症(Attention deficit hyperactivity disorder,ADHD)、语言发育迟缓及其它疾病中的应用发现,Griffiths发育评估量表相比其它诊断量表适应年龄更广、测试内容更细致、富有趣味性、文字较少、更容易施测、在发育行为疾病评估中具有较好的信度和效度。Griffiths发育评估量表不仅能用于发育行为疾病中,还可以用于其它特殊疾病如癫痫、克汀病、苯丙酮尿症等。由于目前国内使用该量表对发育行为疾病评估缺少研究数据,因此本文以期为儿童保健及康复人员在临床评估选择量表及科研工作中提供参考。展开更多
We present a study on the magnetocaloric properties of a CaBaCo_(4)O_(7) polycrystalline cobaltite along with research on the nature of magnetic phase transition.The magnetization as a function of temperature identifi...We present a study on the magnetocaloric properties of a CaBaCo_(4)O_(7) polycrystalline cobaltite along with research on the nature of magnetic phase transition.The magnetization as a function of temperature identifies the ferrimagnetic to paramagnetic transition at a Curie temperature of 60 K.Moreover,a Griffiths-like phase is confirmed in a temperature range above T_(C).The compound undergoes a crossover from the first to second-order ferrimagnetic transformation,as evidenced by the Arrott plots,scaling of the universal entropy curve,and field-dependent magnetic entropy change.The maximum of entropy change is 3 J/kg⋅K for ΔH=7 T at T_(C),and a broadening of the entropy peak with increasing magnetic field indicates a field-induced transition above T_(C).The analysis of the magnetic entropy change using the Landau theory reveals the second-order phase transition and indicates that the magnetocaloric properties of CaBaCo_(4)O_(7) are dominated by the magnetoelastic coupling and electron interaction.The corresponding values of refrigerant capacity and relative cooling power are estimated to be 33 J/kg and 42 J/kg,respectively.展开更多
目的探讨Griffiths发育评估量表-中文版(G D S-C)在评估孤独症谱系障碍(A S D)儿童中的应用价值,为其临床应用及推广提供理论依据。方法本研究共纳入39例ASD儿童作为研究对象,均使用GDS-C和0~6岁儿童神经心理发育量表(简称儿心量表)在2...目的探讨Griffiths发育评估量表-中文版(G D S-C)在评估孤独症谱系障碍(A S D)儿童中的应用价值,为其临床应用及推广提供理论依据。方法本研究共纳入39例ASD儿童作为研究对象,均使用GDS-C和0~6岁儿童神经心理发育量表(简称儿心量表)在2周内进行评估,并使用儿童孤独症评定量表(CARS)评估ASD程度。将GDS-C各维度分别与儿心量表和CARS进行分析比较,观察其相关性。结果除A运动维度外,GDS-C测得的B个人-社会、C语言、D手眼协调、E表现维度智龄均高于儿心量表(t值分别为2.90、2.85、3.58、3.40,均P<0.01)。按照ASD儿童各维度迟缓分布,GDS-C测评中A维度发现迟缓人数比率明显高于儿心量表(χ~2=15.10,P <0.01),其他各维度比较无明显差异。GDS-C量表A、B、C、D、E维度与儿心量表运动、社会行为、语言、精细动作、适应能力维度相关系数高且显著(r值分别为0.95、0.84、0.78、0.83、0.92,均P <0.01),F实际推理与儿心量表适应能力相关性稍弱(r=0.50,P <0.01)。GDS-C量表B、C及F维度与CARS量表成负相关(r值分别为―0.37、―0.38、―0.39,均P <0.05)。结论 GDS-C量表与儿心量表在ASD儿童的发育评估中具有较高的一致性。因其测试项目更为细致,能更准确的得到被测儿童的实际智龄,值得临床推广。展开更多
The effect of Fe-doping on the magnetic properties of the ABO3-type perovskite cobaltites La0.7Ba0.3CoO3（0≤ y≤0.80） is reported. With no apparent structural change in any doped sample, the Curie temperature （Tc）...The effect of Fe-doping on the magnetic properties of the ABO3-type perovskite cobaltites La0.7Ba0.3CoO3（0≤ y≤0.80） is reported. With no apparent structural change in any doped sample, the Curie temperature （Tc） and the magnetization （M） are greatly suppressed for y ≤0.30 samples, while a distinct increase in Tc for the y=0.40 sample is observed. With the further increase of Fe concentration, Tc increases monotonically. Griffiths-like phases in 0.40≤y ≤0.60 samples are confirmed. The formation of the Griffiths-like phase is ascribed to B-site disordering induced isolation of ferromagnetic （FM） clusters above Tc.展开更多
The layered transition metal dichalcogenides(TMDs)have raised considerable interest in the past decades for both fundamental physics and low-dimensional nanodevice applications.Recently,intriguing phenomena of Ising s...The layered transition metal dichalcogenides(TMDs)have raised considerable interest in the past decades for both fundamental physics and low-dimensional nanodevice applications.Recently,intriguing phenomena of Ising superconductivity and quantum metallic state have been reported in two-dimensional(2D)4Ha-TaSe2 nanodevices.Here,we report the magnetic field induced superconductor–metal transition(SMT)in mechanical exfoliated 4Ha-TaSe2 nanodevices with thickness down to 2.5 nm.We observe the quantum Griffiths singularity(QGS)of SMT in thin 4Ha-TaSe2 nanodevices by performing ultralow temperature transport measurements and activated scaling analysis.With increasing the thickness of TaSe2 nanodevice to 10.6 nm,the signature of magnetoresistance crossing region can hardly be detected,revealing the thickness dependence of SMT.In this procedure,the disorder strength plays a dominant role.This work enriches the platform for studying QGS and may stimulate further investigations on the correlation between different novel quantum phenomena in the same 2D superconducting system.展开更多
Dear Editor,The pandemic of coronavirus disease 2019(COVID-19)caused by SARS-Co V-2 has posed a significant threat to global public health and economy,thus calling for the rapid development of effective therapeutics a...Dear Editor,The pandemic of coronavirus disease 2019(COVID-19)caused by SARS-Co V-2 has posed a significant threat to global public health and economy,thus calling for the rapid development of effective therapeutics and prophylactics.Repurposing existing medicines with clinical safety profiles offers a more rapid hope of combating COVID-19pandemic than developing a new therapeutic.展开更多
基金Project supported by the National Natural Science Foundation of China (Grant No.51725104)Beijing Natural Science Foundation (Grant No.Z180009)。
文摘We present a study on the magnetocaloric properties of a CaBaCo_(4)O_(7) polycrystalline cobaltite along with research on the nature of magnetic phase transition.The magnetization as a function of temperature identifies the ferrimagnetic to paramagnetic transition at a Curie temperature of 60 K.Moreover,a Griffiths-like phase is confirmed in a temperature range above T_(C).The compound undergoes a crossover from the first to second-order ferrimagnetic transformation,as evidenced by the Arrott plots,scaling of the universal entropy curve,and field-dependent magnetic entropy change.The maximum of entropy change is 3 J/kg⋅K for ΔH=7 T at T_(C),and a broadening of the entropy peak with increasing magnetic field indicates a field-induced transition above T_(C).The analysis of the magnetic entropy change using the Landau theory reveals the second-order phase transition and indicates that the magnetocaloric properties of CaBaCo_(4)O_(7) are dominated by the magnetoelastic coupling and electron interaction.The corresponding values of refrigerant capacity and relative cooling power are estimated to be 33 J/kg and 42 J/kg,respectively.
文摘目的探讨Griffiths发育评估量表-中文版(G D S-C)在评估孤独症谱系障碍(A S D)儿童中的应用价值,为其临床应用及推广提供理论依据。方法本研究共纳入39例ASD儿童作为研究对象,均使用GDS-C和0~6岁儿童神经心理发育量表(简称儿心量表)在2周内进行评估,并使用儿童孤独症评定量表(CARS)评估ASD程度。将GDS-C各维度分别与儿心量表和CARS进行分析比较,观察其相关性。结果除A运动维度外,GDS-C测得的B个人-社会、C语言、D手眼协调、E表现维度智龄均高于儿心量表(t值分别为2.90、2.85、3.58、3.40,均P<0.01)。按照ASD儿童各维度迟缓分布,GDS-C测评中A维度发现迟缓人数比率明显高于儿心量表(χ~2=15.10,P <0.01),其他各维度比较无明显差异。GDS-C量表A、B、C、D、E维度与儿心量表运动、社会行为、语言、精细动作、适应能力维度相关系数高且显著(r值分别为0.95、0.84、0.78、0.83、0.92,均P <0.01),F实际推理与儿心量表适应能力相关性稍弱(r=0.50,P <0.01)。GDS-C量表B、C及F维度与CARS量表成负相关(r值分别为―0.37、―0.38、―0.39,均P <0.05)。结论 GDS-C量表与儿心量表在ASD儿童的发育评估中具有较高的一致性。因其测试项目更为细致,能更准确的得到被测儿童的实际智龄,值得临床推广。
基金Project supported by the National Basic Research Program of China (Grant No 2009CB929201)the National Natural Science Foundation of China (Grant No 10774179)
文摘The effect of Fe-doping on the magnetic properties of the ABO3-type perovskite cobaltites La0.7Ba0.3CoO3（0≤ y≤0.80） is reported. With no apparent structural change in any doped sample, the Curie temperature （Tc） and the magnetization （M） are greatly suppressed for y ≤0.30 samples, while a distinct increase in Tc for the y=0.40 sample is observed. With the further increase of Fe concentration, Tc increases monotonically. Griffiths-like phases in 0.40≤y ≤0.60 samples are confirmed. The formation of the Griffiths-like phase is ascribed to B-site disordering induced isolation of ferromagnetic （FM） clusters above Tc.
基金the National Natural Science Foundation of China(Nos.11888101,11974430,and 12174442)the National Key R&D Program of China(Nos.2018YFA0305600 and 2022YFA1403103)+3 种基金the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB28000000)the Innovation Program for Quantum Science and Technology(No.2021ZD0302400)Young Elite Scientists Sponsorship Program by BAST(No.BYESS2023452)the Fundamental Research Funds for the Central Universities,and the Research Funds of Renmin University of China(No.22XNKJ20).
文摘The layered transition metal dichalcogenides(TMDs)have raised considerable interest in the past decades for both fundamental physics and low-dimensional nanodevice applications.Recently,intriguing phenomena of Ising superconductivity and quantum metallic state have been reported in two-dimensional(2D)4Ha-TaSe2 nanodevices.Here,we report the magnetic field induced superconductor–metal transition(SMT)in mechanical exfoliated 4Ha-TaSe2 nanodevices with thickness down to 2.5 nm.We observe the quantum Griffiths singularity(QGS)of SMT in thin 4Ha-TaSe2 nanodevices by performing ultralow temperature transport measurements and activated scaling analysis.With increasing the thickness of TaSe2 nanodevice to 10.6 nm,the signature of magnetoresistance crossing region can hardly be detected,revealing the thickness dependence of SMT.In this procedure,the disorder strength plays a dominant role.This work enriches the platform for studying QGS and may stimulate further investigations on the correlation between different novel quantum phenomena in the same 2D superconducting system.
基金supported by the National Natural Science Foundation of China(81630090 and 81703571)the National Megaprojects of China for Major Infectious Diseases(2018ZX10301208 and 2018ZX10301403)the Program of Shanghai Academic/Technology Research Leader(20XD1420300)。
文摘Dear Editor,The pandemic of coronavirus disease 2019(COVID-19)caused by SARS-Co V-2 has posed a significant threat to global public health and economy,thus calling for the rapid development of effective therapeutics and prophylactics.Repurposing existing medicines with clinical safety profiles offers a more rapid hope of combating COVID-19pandemic than developing a new therapeutic.
