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The Role of Valence Electron Concentration on the Structure and Properties of Rapidly Solidified Sn-Ag Binary Alloys
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作者 M. Kamal A. B. El-Bediwi +1 位作者 T. El-Ashram M. E. Dorgham 《Materials Sciences and Applications》 2012年第3期179-184,共6页
A group of binary Sn-xAg alloys (x = 0.5, 1.5, 2.5, 3.5, 4.5, 5.5 and 6.5 wt%) has been produced by a single copper roller melt-spinning technique. In this study the interaction between Fermi sphere and Brillouin zone... A group of binary Sn-xAg alloys (x = 0.5, 1.5, 2.5, 3.5, 4.5, 5.5 and 6.5 wt%) has been produced by a single copper roller melt-spinning technique. In this study the interaction between Fermi sphere and Brillouin zone and Hume-Rothery condition of phase stability have been verified. It is found that by increasing valence electron concentration VEC the diameter of Fermi sphere 2kF increases which leads to the increase in the diameter of Brillouin zone which arises from the decrease in volume of the unit cell. It is found that the electrical resistivity increases by increasing VEC due to the decrease in relaxation time τ with increasing VEC. Also it has been confirmed that the correlation between Young’s modulus and the axial ratio c/a of β-Sn unit cell. 展开更多
关键词 Alloys Rapid solidification valence Electron CONCENTRATION Resistivity Young’s Modulus FERMI Energy BRILLOUIN Zone
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A Meta-analysis of Mood Stabilizers for Alzheimer's Disease
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作者 肖海兵 苏颖 +2 位作者 曹旭 孙圣刚 梁直厚 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2010年第5期652-658,共7页
The objective of this study was to assess the clinical evidence for or against mood stabilizers as a treatment for Alzheimer’s disease (AD).We searched 5 databases from their inception to January 2010.Five randomized... The objective of this study was to assess the clinical evidence for or against mood stabilizers as a treatment for Alzheimer’s disease (AD).We searched 5 databases from their inception to January 2010.Five randomized clinical trials of mood stabilizers to treat human patients suffering from AD were included.These trials assessed the effectiveness of mood stabilizers as an adjunct treatment to conventional anti-dementia drugs on behavioral and psychological symptoms, especially on agitation.Methodological quality was assessed using the Jadad score.The results suggested a significant effect in favor of placebo on the Mini-Mental Status Examination [n=270, weight mean difference (WMD), -0.89; 95% confidence intervals (CIs) -1.69 to -0.09, P=0.03] and on the Neuropsychiatric Inventory total (NPI total) (n=51, WMD, 3.71; 95% CIs 0.15 to 7.26, P=0.04).There were no significant differences in change scores on total Brief Psychiatric Rating Scale (BPRS total), NPI/BPRS agitation, Cohen-Mansfield Agitation Inventory total and Physical Self Maintenance Scale between mood stabilizers and placebo.Only one of these studies was free of methodological limittions (Jadad score=5).In conclusion, based on the existing evidence, mood stabilizers are ineffective or even harmful as a treatment for AD. 展开更多
关键词 Alzheimer’s disease behavioral and psychological symptoms mood stabilizers META-ANALYsIs
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V_(2)O_(3)/VO_(2)@S/N-C nanofibers with excellent cycling stability and superior rate capability in aqueous zinc ion batteries
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作者 Li Chen Zhi Chen +5 位作者 Zhaohui Wu Haijun Zeng Yabing Chen Huiyong Yang Wentao Qian Juntong Huang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第12期83-91,共9页
The development of aqueous zinc-ion batteries (AZIBs) marks a significant advancement in the field of sustainable and environmentally friendly energy storage.To address the challenges faced by singlephase vanadium-bas... The development of aqueous zinc-ion batteries (AZIBs) marks a significant advancement in the field of sustainable and environmentally friendly energy storage.To address the challenges faced by singlephase vanadium-based oxides,such as poor conductivity and dissolution in electrolytes,this study introduces vacuum S/N doping to fabricate V_(2)O_(3)/VO_(2)@S/N-C nanofibers,improving the cycling stability and enhancing the capacity.The V_(2)O_(3)/VO_(2)@S/N-C electrode exhibits exceptional cyclic stability,retaining a capacity of 133.3 m A h g^(-1)after 30,000 cycles at a high current density of 100 A g^(-1)and a capacity retention of 81.8%after 150,000 cycles at 200 A g^(-1).Characterizations using ex-situ X-ray diffraction and ex-situ X-ray photoelectron spectroscopy reveal co-intercalation of H^(+)and Zn^(2+)in the V_(2)O_(3)/VO_(2)@S/N-C electrode.Due to the presence of S_(2)^(2-),more phases changed to V_(10)O_(24).12H_(2)O,making the V_(2)O_(3)/VO_(2)@S/N-C electrode better reversible.By elucidating the zinc storage mechanism and demonstrating the stable performance of the doped electrode,this work contributes valuable insights into the optimization of the electrode materials for future energy storage solutions. 展开更多
关键词 s/N co-doping Biphasic mixed valence vanadium oxides Aqueous zinc-ion battery V_(10)O_(24)·12H_(2)O
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Transcranial Direct Current Stimulation: Effects on Motor and Non-Motor Symptoms of Parkinson’s Disease
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作者 Fayda Protásio Carlos Alberto Bezerra Tomaz +3 位作者 Joaquim Brasil-Neto Pedro Brandão Nasser Allam Maria Clotilde Henriques Tavares 《Journal of Behavioral and Brain Science》 2024年第5期135-160,共26页
Introduction: In the last thirty years, brain neuromodulation techniques have been used as an alternative to pharmacological treatment of neurological disorders. Parkinson’s disease (PD) is a neurodegenerative disord... Introduction: In the last thirty years, brain neuromodulation techniques have been used as an alternative to pharmacological treatment of neurological disorders. Parkinson’s disease (PD) is a neurodegenerative disorder leading to bradykinesia, rest tremor, postural changes, and non-motor symptoms such as depression, anxiety, sleep disorders, pain, and cognitive decline that compromises executive functions (EFs), responsible for the orderly execution of behaviors and tasks of daily life and intentional and directed actions. To this date, a few studies with transcranial direct current stimulation (tDCS) have shown beneficial effects in PD patients concerning specific motor and non-motor symptoms, targeting the motor cortex and/or prefrontal regions. Objective: The main objective of this study was to evaluate the effects of left prefrontal tDCS across a broad spectrum of motor and non-motor symptoms of PD using established validated scales. Method: Single-blind randomized clinical trial with 18 volunteers with PD, aged between 45 and 80 years (66.1 ± 9.65), who met inclusion and exclusion criteria. Participants were submitted to assessments of motor and non-motor functions employing psychometric scales and tests to evaluate EFs and were randomly divided into two groups: control (sham stimulation) and experimental (active stimulation). All participants were involved in three separate tDCS sessions. The anode was positioned over the left dorsolateral prefrontal cortex and the cathode over the right supraorbital region, with a direct current intensity of 2 mA, lasting 20 minutes. At the end of the three sessions, all participants were reassessed. Results: Significant effects of tDCS on non-motor functions were observed for cognition (verbal fluency of actions, clock copy test, appointment by visual confrontation, and verbal memory with immediate free recall) and subjective assessment of sleep quality (overall restlessness and discomfort in the arms and legs at night, leg and arm cramps at night and distressing dreams). There was also an improvement in the rate of errors and successes for congruent and incongruent stimuli of the Stroop Test. The beneficial effects on motor function were decreased rigidity, improved gait, and greater agility in the finger-tapping test. Conclusion: Three tDCS sessions showed positive results for participants with PD, producing significant improvements in various motor and non-motor functions, including sleep quality, cognition, and EFs. Additionally, the present results indicate that tDCS neuromodulation of the left dorsolateral prefrontal cortex region is feasible, safe, and provides significant objective benefits for PD patients. 展开更多
关键词 Parkinson’s Disease NEUROMODULATION Transcranial Direct Current stimulation—tDCs Movement Disorders mood sLEEP COGNITION
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含固氮酶钼微环境结构单元O_3MoS_3的Mo-S,Mo-Fe-S化合物的研究 被引量:1
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作者 庄伯涛 黄梁仁 +3 位作者 兰安建 何玲洁 潘炳华 余佩华 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1995年第3期161-169,共9页
研究了含固氮酶钼微环境O_3MoS_3结构单元四个系列化合物[Mo(S,O-C_6H_4-1,2]~-(M)[Mo_2(CO)_3(S,O-C_6H_4-1,2)_3]^(2-)(D),[Mo_3(CO)_7(S,O-C_6H_4... 研究了含固氮酶钼微环境O_3MoS_3结构单元四个系列化合物[Mo(S,O-C_6H_4-1,2]~-(M)[Mo_2(CO)_3(S,O-C_6H_4-1,2)_3]^(2-)(D),[Mo_3(CO)_7(S,O-C_6H_4-1,2)_3]^(2-)(T),和[Mo_2Fe(CO)_4(S,O-C_6H_4-1,2)_3Cl_2]^(2-)(T_f)的合成化学与结构化学,并通过X-射线光电子能谱,红外光谱和电化学环伏安研究,深入探讨了它们的混合价,电子迁移和电化学行为,也讨论了有趣的O_3MoS_3结构单元。 展开更多
关键词 混合价 固氮酶 微环境 有机氧 有机硫
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含O_3MoS_3单元的配合物[Mo_x(CO)_y(O,S—C_6H_4—1,2)_3Fe_zL_m]^(n-)(x=1,2或3,y=0,3,7或4,z=0或1,L=Cl,m=0,2,n=1或2)的红外光谱及其与结构的关系研究 被引量:1
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作者 何玲洁 庄伯涛 +4 位作者 蔡素华 陈波 兰安建 周文波 张琳娜 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2000年第6期788-789,共2页
用红外光谱研究标题配合物的结构 ,得到了很有意义的结果。
关键词 红外光谱 配合物 电荷迁移 O3Mos3 结构
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书信中语篇人际意义的实现——从对“A Soldier’s Last Letter”语言的分析谈起 被引量:1
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作者 赵青 郭英杰 《陕西教育学院学报》 2008年第4期88-92,共5页
结合功能语言学理论,以"A Soldier’s Last Letter"中的部分段落为例进行分析,可以展示如何通过语气系统和情态系统来进行选择形成语篇,从而突显语言选择对语篇人际意义实现的重要性以及功能语言学在分析文学作品时的可行性。
关键词 A soldier’s LAsT LETTER 人际功能 语气 情态
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An Analysis of Interpersonal Function of the Dialogues in the Film The King's Speech
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作者 杨越森 《海外英语》 2015年第6期236-240,252,共6页
Based on the framework of Halliday's theory of interpersonal function, this study intends to analyze the dialogues in the film The King's Speech from the three aspects of mood type, modal operator and vocative... Based on the framework of Halliday's theory of interpersonal function, this study intends to analyze the dialogues in the film The King's Speech from the three aspects of mood type, modal operator and vocative address by adopting both quantitative and qualitative methods. The significances of successful realizations of interpersonal function to the role characterization, plot development and thematic construction in the film are also demonstrated, thus deepening the understanding and appreciation of the film. 展开更多
关键词 INTERPERsONAL function The King’s sPEECH mood type MODAL operator vocative ADDREss
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Depression and anxiety levels in therapy-nave patients with inflammatory bowel disease and cancer of the colon 被引量:11
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作者 Branislav R Filipovi Branka F Filipovi +2 位作者 Mirko Kerkez Nikola Milini Tomislav Ran■elovi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第3期438-443,共6页
AIM: To assess whether depression and anxiety are more expressed in patients with the first episode of inflammatory bowel disease (IBD) than in individuals with newly discovered cancer of the colon (CCa). METHODS: A t... AIM: To assess whether depression and anxiety are more expressed in patients with the first episode of inflammatory bowel disease (IBD) than in individuals with newly discovered cancer of the colon (CCa). METHODS: A total of 32 patients with IBD including 13 males and 19 females, aged 27 to 74, and 30 patients with CCa including 20 males and 10 females, aged 39-78, underwent a structured interview, which comprised Hamilton’s Depression Rating Inventory, Hamilton’s Anxiety Rating Inventory and Paykel’s Stressful Events Rating Scale. RESULTS: Patients of the IBD group expressed both depression and anxiety. Depressive mood, sense of guilt, psychomotor retardation and somatic anxiety were also more pronounced in IBD patients. The discriminant function analysis revealed the total depressive score was of high importance for the classification of a newly diagnosed patient into one of the groups. CONCLUSION: Newly diagnosed patients with IBD have higher levels of depression and anxiety. Moreover, a psychiatrist in the treatment team is advisable from the beginning. 展开更多
关键词 Crohn's disease Ulcerative colitis Colon cancer mood disorder
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Partial improvement in performance of patients with severe Alzheimer's disease at an early stage of fornix deep brain stimulation 被引量:6
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作者 Zhi-Qi Mao Xin Wang +8 位作者 Xin Xu Zhi-Qiang Cui Long-Sheng Pan Xiao-Jing Ning Bai-Xuan Xu Lin Ma Zhi-Pei Ling Jian-Jun Jia Xin-Guang Yu 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第12期2164-2172,共9页
Deep brain stimulation is a therapy for Alzheimer's disease(AD) that has previously been used for mainly mild to moderate cases. This study provides the first evidence of early alterations in performance induced by... Deep brain stimulation is a therapy for Alzheimer's disease(AD) that has previously been used for mainly mild to moderate cases. This study provides the first evidence of early alterations in performance induced by stimulation targeted at the fornix in severe AD patients. The performance of the five cases enrolled in this study was scored with specialized assessments including the Mini-Mental State Examination and Clinical Dementia Rating, both before and at an early stage after deep brain stimulation. The burden of caregivers was also evaluated using the Zarit Caregiver Burden Interview. As a whole, the cognitive performance of patients remained stable or improved to varying degrees, and caregiver burden was decreased. Individually, an improved mental state or social performance was observed in three patients, and one of these three patients showed remarkable improvement in long-term memory. The conditions of another patient deteriorated because of inappropriate antipsychotic medications that were administered by his caregivers. Taken together, deep brain stimulation was capable of improving some cognitive aspects in patients with severe AD, and of ameliorating their emotional and social performance, at least at an early stage. However, long-term effects induced by deep brain stimulation in patients with severe AD need to be further validated. More research should focus on clarifying the mechanism of deep brain stimulation. This study was registered with ClinicalTrials.gov(NCT03115814) on April 14, 2017. 展开更多
关键词 Alzheimer's disease deep brain stimulation FORNIX COGNITION memory mood PERFORMANCE early stage functional neurosurgery DEMENTIA
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S_N2反应X_l^-+CH_3X_r→X_lCH_3+X_l^-(X_l=X_r=F,Cl,Br,I)的价键方法研究
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作者 陈衍芬 宋凌春 +1 位作者 吴玮 张乾二 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2003年第12期2227-2230,共4页
应用最近发展的价键组态相互作用 ( VBCI)方法计算了 SN2反应 X-l +CH3 Xr→ Xl CH3 +X-r ( Xl=Xr=F,Cl,Br,I)的反应能垒和价键相关参数 .计算结果表明 ,VBCI能垒与采用分子轨道理论的 CCSD( T)方法计算的能垒相一致 .讨论了 SN2反应的... 应用最近发展的价键组态相互作用 ( VBCI)方法计算了 SN2反应 X-l +CH3 Xr→ Xl CH3 +X-r ( Xl=Xr=F,Cl,Br,I)的反应能垒和价键相关参数 .计算结果表明 ,VBCI能垒与采用分子轨道理论的 CCSD( T)方法计算的能垒相一致 .讨论了 SN2反应的反应参数 . 展开更多
关键词 sN2反应 从头计算 价键理论 价健态相关图 反应机理 有机化学反应
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Emotion recognition and inhibitory control in manifest and pre-manifest Huntington’s disease: evidence from a new Stroop task
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作者 Thomas Hünefeldt Sabrina Maffi +2 位作者 Simone Migliore Ferdinando Squitieri Marta Olivetti Belardinelli 《Neural Regeneration Research》 SCIE CAS CSCD 2020年第8期1518-1525,共8页
Huntington’s disease(HD)is a genetic neurodegenerative disorder that affects not only the motor but also the cognitive domain.In particular,cognitive symptoms such as impaired executive skills and deficits in recogni... Huntington’s disease(HD)is a genetic neurodegenerative disorder that affects not only the motor but also the cognitive domain.In particular,cognitive symptoms such as impaired executive skills and deficits in recognizing other individuals’mental state may emerge many years before the motor symptoms.This study was aimed at testing two cognitive hypotheses suggested by previous research with a new Stroop task created for the purpose:1)the impairment of emotion recognition in HD is moderated by the emotions’valence,and 2)inhibitory control is impaired in HD.Forty manifest and 20 pre-manifest HD patients and their age-and gender-matched controls completed both the traditional“Stroop Color and Word Test”(SCWT)and the newly created“Stroop Emotion Recognition under Word Interference Task”(SERWIT),which consist in 120 photographs of sad,calm,or happy faces with either congruent or incongruent word interference.On the SERWIT,impaired emotion recognition in manifest HD was moderated by emotion type,with deficits being larger in recognizing sadness and calmness than in recognizing happiness,but it was not moderated by stimulus congruency.On the SCWT,six different interference scores yielded as many different patterns of group effects.Overall our results corroborate the hypothesis that impaired emotion recognition in HD is moderated by the emotions’valence,but do not provide evidence for the hypothesis that inhibitory control is impaired in HD.Further research is needed to learn more about the psychological mechanisms underlying the moderating effect of emotional valence on impaired emotion recognition in HD,and to corroborate the hypothesis that the inhibitory processes involved in Stroop tasks are not impaired in HD.Looking beyond this study,the SERWIT promises to make important contributions to disentangling the cognitive and the psychomotor aspects of neurological disorders.The research was approved by the Ethics Committee of the“Istituto Leonarda Vaccari”,Rome on January 24,2018. 展开更多
关键词 congruent word interference emotion recognition emotional valence Huntington’s disease incongruent word interference inhibitory control stroop interference
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Does Motivation Predict Persistence and Academic Success?
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作者 Kelli D. Whittington 《Open Journal of Nursing》 2015年第1期10-16,共7页
This study researches the relationship between motivation and academic success as measured by the Valence, Instrumentality, and Expectancy Scale. Utilizing Vroom’s Expectancy Theory as the framework, the research ass... This study researches the relationship between motivation and academic success as measured by the Valence, Instrumentality, and Expectancy Scale. Utilizing Vroom’s Expectancy Theory as the framework, the research assesses the responses of 375 nurse assistant students in the state of Illinois to evaluate the self-report of the constructs of Vroom’s Expectancy theory in relation to their performance on a standardized high stakes test. 展开更多
关键词 MOTIVATION Vroom’s EXPECTANCY Theory valence INsTRUMENTALITY EXPECTANCY and NURsE Assistant
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Nanostructures on Surface of SrTio<sub>3</sub>Single Crystals Treated by Plasma
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作者 Nicolay Kulagin Jablan Dojcilovic Ellen Hieckmann 《Materials Sciences and Applications》 2011年第8期971-976,共6页
Modification of a surface of strontium titanate single crystals as pure as doped with Mn (Ni) or Nd (Sm) ions after plasma treatment was studied by combination of scanning electron microscopy and atomic force microsco... Modification of a surface of strontium titanate single crystals as pure as doped with Mn (Ni) or Nd (Sm) ions after plasma treatment was studied by combination of scanning electron microscopy and atomic force microscopy techniques. Valence shift method for characteristic X ray lines was used for study of stoichiometry violation and oxidation state of ions on the crystals surface after plasma treatment. One-and two-level ordered systems of unit crystallites sized of about 10-7 – 10-10 m were discovered on samples surface after plasma treatment with energy density of about 5 - 20 (40) J.cm-2. Oxidation state of Ti ions and stoichiometry of the surface changed essentially on background of high stability of strontium ions valence. 展开更多
关键词 Ordered Nano-scale sTRUCTURE strontium TITANATE PLAsMA Change In sTRUCTURE And Ion’s valence
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A Comparative Study on Obama's Speeches from the Perspective of Interpersonal Function
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作者 吴媛 《海外英语》 2016年第8期200-201,共2页
This paper attempts to conduct a comparative study on Obama’s two speeches—his second inaugural address and his commencement speech in The Ohio State University in 2013 based on Halliday’s theory of Interpersonal F... This paper attempts to conduct a comparative study on Obama’s two speeches—his second inaugural address and his commencement speech in The Ohio State University in 2013 based on Halliday’s theory of Interpersonal Function.The author finds that mood,modality and personal pronouns are the major language means used to realize the interpersonal function;in his two speeches,Obama makes different choices of those resources,and different choices indicate different attitudes and intentions. 展开更多
关键词 Obama’s speech INTERPERsONAL function mood MODALITY PERsONAL PRONOUNs
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湖南衡山方言起责备性强调作用的语气词“时(s■11)”
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作者 曾宝芬 《江西科技师范大学学报》 2021年第4期22-28,共7页
湖南衡山方言前山话中“时[s■11]”做虚词里的语气词,分布在陈述句和反问句的中间和末尾,在对比中体现责备性质的强调语气,可以引入话题、承接话题、引起对比。它从时间词“时”逐步虚化出来。
关键词 衡山方言 “时[s■11]” 语气词 对比强调语气
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A Creation Model from the Gell-Mann Standard Model to the Creation of Bio Cells: Based on the Assumption of Homogeneous 5D Space-Time Universe
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作者 Kai Wai Wong Wan Ki Chow 《Journal of Modern Physics》 2020年第7期1058-1074,共17页
In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of al... In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of all energies. Then through the space dimension reduction projections, the Gell-Mann standard model was obtained as well as a quantum to Classical connection was made via introducing Bose distribution to the monopoles to obtain the Perelman entropy and Ricci Flow mappings. This provided us a picture to the creation of Astronomical objects, from galaxies to stars and planets. This method of splitting the monopole energy into ranges is extended to show that below the basic rest mass range of the electron and Quark, it still can be applied to explaining for the creation of the chemical elements periodic table. But perhaps the most interesting is in the lowest hundreds of Hz energy range, obtained from yet another 3 fold space symmetry breaking, into 2D × 1D, producing bio nitrogenous bases composed of 3 Carbon 12 in hexagon structures, due to preservation of the 1D monopole standing waves of this low frequencies. From that by imposing gauge changes the monopole states into DNA spectra. Since such spectra states retain the DLRO, it induces formation of charge carriers periodicity in a spherical bio cell.. It was then argued that due to cell’s surface proteins, the structure must contain partial filled VB, with “p” state hole density, and empty CB, separated from VB by a positive band gap. Such band structures resemble known HTC Cuprate ceramics. Since the HTC goes through a Superconductivity transition via the simultaneous bose exciton condensation, providing a Coulomb pressure, which reduces the band gap substantially, and induces the ODLRO transition of the hole density. The same obviously applies to the bio cells. Because of the near continuous exciton levels generated, a matching to the DNA spectra then can always occur by selective choices of proteins on the cell surface. Judging from a numerical study, we did years ago on YBCO, with doping. We found with a large enough VB hole density, the exciton induced superconducting gap can easily lead to <em>T</em><em>c</em> in the room temperature range. In fact by EMF excitation can increase the exciton pressure and trigger the ODLRO transition <em>T</em><em>c</em> upward. In fact, numerical results then suggest there do exist coherent EMF spectra from three key elements: Water, Carbon and Hydrogen, together with Oxygen, as studied over the years by numerous people, starting from Schr<span style="white-space:nowrap;">&ouml;</span>dinger to most recently Geesink. 展开更多
关键词 5D Fermat’s Theorem space Dimension Reduction Projections Perelman Mappings The Higgs Vacuum: A B.E. Condensed Monopole Bosons Realization of Excitonic Induced superconducting “p” valence Band Orbitals in Bio Cells The Final Coherent Building Block EMF spectra: Water Carbon Hydrogen and Oxygen
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Configuration of the valence neutrons of ^(17)B
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作者 王猛 胡正国 +24 位作者 徐瑚珊 孙志宇 王建松 肖国青 詹文龙 张雪荧 李琛 毛瑞士 张宏斌 赵铁成 徐治国 王玥 陈若富 黄天衡 高辉 贾飞 付芬 高启 韩建龙 章学恒 郑川 余玉洪 樊瑞睿 李波 郭忠言 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第7期548-551,共4页
The reaction cross section of 17B on 12C target at (43.7±2.4) MeV/u has been measured at the Radioactive Ion Beam Line in Lanzhou (RIBLL). The root-mean-square matter radius (Rrms) was deduced to be (2.92&... The reaction cross section of 17B on 12C target at (43.7±2.4) MeV/u has been measured at the Radioactive Ion Beam Line in Lanzhou (RIBLL). The root-mean-square matter radius (Rrms) was deduced to be (2.92±0.10) fro, while the Rrras of the core and the valence neutron distribution are 2.28 fm and 5.98 fm respectively. Assuming a "core plus 2n11 structure in 17B, the mixed configuration of (2s1/2) and (1d5/2) of the valence neutrons is studied and the s-wave spectroscopic factor is found to be (80±21)%. 展开更多
关键词 valence neutron root-mean-square rarlius s-wave spectroscopic factor
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54小时睡眠剥夺对4名健康志愿者情绪的影响 被引量:9
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作者 刘宁 皇甫恩 +2 位作者 王小英 刘旭峰 杨振中 《中国心理卫生杂志》 CSSCI CSCD 北大核心 1998年第4期196-197,共2页
采用情绪状态问卷(POMS)和状态-焦虑问卷(S-AI),对4名健康男性志愿者,在完全睡眠剥夺54小时期间反复测量8次。结果表明随着睡眠剥夺时间延长,POMS中的紧张-焦虑(T),困惑-迷茫(C)和疲惫-惰性(F)三... 采用情绪状态问卷(POMS)和状态-焦虑问卷(S-AI),对4名健康男性志愿者,在完全睡眠剥夺54小时期间反复测量8次。结果表明随着睡眠剥夺时间延长,POMS中的紧张-焦虑(T),困惑-迷茫(C)和疲惫-惰性(F)三项消极情绪状态值及S-AI得分逐渐增加,而POMS中的积极情绪状态值即有力-好动(V)得分依次下降,其中以剥夺睡眠45小时以后变化显著(P<0.05~0.01)。 展开更多
关键词 睡眠剥夺 情绪 POMs s-AI 情绪状态问卷
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社会距离对他人行为表征的影响:评价内容效价的作用 被引量:30
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作者 牛忠辉 蒋赛 +2 位作者 邱俊杰 申之美 张锋 《应用心理学》 CSSCI 2010年第4期291-300,共10页
心理距离的建构水平理论认为,人与人之间的亲密度具有心理距离特性(即社会距离),人们对心理上远距离的客体或事件的表征倾向于采用高水平建构,而对心理上近距离的客体或事件的表征倾向于采用低水平建构。本研究以特质性和行动性行为描... 心理距离的建构水平理论认为,人与人之间的亲密度具有心理距离特性(即社会距离),人们对心理上远距离的客体或事件的表征倾向于采用高水平建构,而对心理上近距离的客体或事件的表征倾向于采用低水平建构。本研究以特质性和行动性行为描述句子为实验材料,通过两个实验考察了社会距离(亲密舍友/公选课上认识的同性同学)对他人正性和负性行为评价的影响,以探讨评价内容效价对于建构水平的心理距离效应的调节作用。实验结果发现:(1)随着社会距离的延伸,被试对社会远距离他人的正性行为更倾向于高水平的特质性表征,但在负性行为上未获得明确的类似效应;(2)相对于社会远距离他人,被试对社会近距离他人正性行为和负性行为的评价分数均较高,提示人际熟悉度对他人行为的表征具有一定的调节作用。 展开更多
关键词 社会距离 建构水平 他人行为表征 评价效价
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