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| 1 | ^(18)F(p,α)^(15)O,^(18)F(p.γ)^(19)Ne的核天体反应几率显示文摘氢在恒星的爆炸中燃烧。在这些环境中,温度范围为107~109K或更高,密度范围为102K~106g/cm3。在这些地方,核反应可以很快的发生,以致放射性核素诸如14O、15O、17F、18F等,在有机会衰变之前就俘获了质子。有关在这些环境中放射性核素的质子诱发反应,对于确定核素的合成以及能量的产生扮演着重要的角色。 特别是,当爆炸后,预测新星包层这些放射性核素的总量存在着很大的偏差,因为现在的18F(p,α)15O和18F(p。 | 舒能川 M.S.Smith D.W.Bardayan D.W.Bardayan | 2001 | 中国原子能科学研究院年报2001，，1： | 0 |
| 2 | New Astrophysical Reaction Rates for ^18F(P,α)^15O and ^18F(P,γ)^19Ne显示文摘The rates of the thermonuclear ^18F(P,α)^15O and ^18F(P,γ)^19Ne reactions in hot astrophysical environments are needed to understand gamma-ray emission from nova explosions. The rates for these reactions have been uncertain due to discrepancies in recent measurements, as well as to a lack of a comprehensive examination of the available structure information in the compound nucleus ^19Ne. We have examined the latest experimental measurements with radioactive and stable beams, and made estimates of the unmeasured ^19Ne nuclear level parameters, to generate new rates with uncertainties for these reactions. The rates are expressed as numerical values over the temperature range relevant for stellar explosions, as well as analytical expressions as functions of temperature in a format suitable for use in astrophysical simulations. Comparisons with the previous rate calculations are carried out, and the astrophysical implications are briefly discussed. | 舒能川 D.W.Bardayan J.C.Blackmon 陈永寿 R.L.Kozub P.D.Parker M.S.Smith | 2003 | Chinese Physics Letters2003，20，9： | 0 |
| 3 | Massive neutron stars and A-hypernuclei in relativistic mean field models显示文摘Based on relativistic mean field(RMF) models, we study finite A-hypernuclei and massive neutron stars. The effective N-N interactions PK1 and TM1 are adopted, while the N-A interactions are constrained by reproducing the binding energy of A-hyperon at 1 s orbit of_Λ^(40)Ca. It is found that the A-meson couplings follow a simple relation, indicating a fixed A potential well for symmetric nuclear matter at saturation densities, i.e., around V_Λ=-29.786 MeV. With those interactions, a large mass range of Λ-hypernuclei can be described well. Furthermore,the masses of PSR J1614-2230 and PSR J0348+0432 can be attained adopting the Λ-meson couplings g_(σΛ)/g_(σN)≥0.73,g_(ωΛ)/g_(ωN)≥0.80 for PK1 and g_(σΛ)/g_(σN)≥0.81,g_(ωΛ)/g_(ωN)≥0.90 for TM1, respectively. This resolves the hyperon puzzle without introducing any additional degrees of freedom. | 孙亭亭 夏铖君 张时声 M.S.Smith | 2018 | Chinese Physics C2018，42，2： | 0 |
| 4 | Large-diameter trees dominate snag and surface biomass following reintroduced fire显示文摘The reintroduction of fire to landscapes where it was once common is considered a priority to restore historical forest dynamics,including reducing tree density and decreasing levels of woody biomass on the forest floor.However,reintroducing fire causes tree mortality that can have unintended ecological outcomes related to woody biomass,with potential impacts to fuel accumulation,carbon sequestration,subsequent fire severity,and forest management.In this study,we examine the interplay between fire and carbon dynamics by asking how reintroduced fire impacts fuel accumulation,carbon sequestration,and subsequent fire severity potential.Beginning pre-fire,and continuing 6 years post-fire,we tracked all live,dead,and fallen trees≥1 cm in diameter and mapped all pieces of deadwood(downed woody debris)originating from tree boles≥10 cm diameter and≥1 m in length in 25.6 ha of an Abies concolor/Pinus lambertiana forest in the central Sierra Nevada,California,USA.We also tracked surface fuels along 2240 m of planar transects pre-fire,immediately post-fire,and 6 years post-fire.Six years after moderate-severity fire,deadwood≥10 cm diameter was 73 Mg ha^(−1),comprised of 32 Mg ha^(−1) that persisted through fire and 41 Mg ha^(−1) of newly fallen wood(compared to 72 Mg ha^(−1) pre-fire).Woody surface fuel loading was spatially heterogeneous,with mass varying almost four orders of magnitude at the scale of 20 m×20 m quadrats(minimum,0.1 Mg ha^(−1);mean,73 Mg ha^(−1);maximum,497 Mg ha^(−1)).Wood from large-diameter trees(≥60 cm diameter)comprised 57%of surface fuel in 2019,but was 75%of snag biomass,indicating high contributions to current and future fuel loading.Reintroduction of fire does not consume all large-diameter fuel and generates high levels of surface fuels≥10 cm diameter within 6 years.Repeated fires are needed to reduce surface fuel loading. | James A.Lutz Soren Struckman Tucker J.Furniss C.Alina Cansler Sara J.Germain Larissa L.Yocom Darren J.McAvoy Crystal A.Kolden Alistair M.S.Smith Mark E.Swanson Andrew J.Larson | 2020 | Ecological Processes2020，9，1： | 0 |
| 5 | 二语学习者语言觉悟的提高显示文摘在论述语言教学的文献中和论述更为狭义的语言学习情境的文献中,“明晰知识”和“隐含知识”概念以各种不同的表述形式出现。一般说来,明晰知识指对目标语结构性质的的意识分析理解;隐含知识指对目标语中什么是正确和可接受的东西之直觉(Bi-alystok,1978)。我们将在本文后面部分谈到,这种两分法需作很大修正,不过它仍可用来大体说明学习一种新语言过程的不同结果。学习一种新语言要达到的最终目标是不加思索地自然使用该语言,这是没有争议的。当然,如何达到这一目标争议很大。有些语言学习研究思潮认为,促进对语言结构有意识理解充其量是一种摆设。 | M.S.Smith 陆锦林 | 1993 | 外语教学理论与实践1993，，3： | 0 |
| 6 | Expressions for the ^(18)F(p,α) ^(15)O and ^(18)F(p,γ) ^(19)Ne Astrophysical Reaction Rates显示文摘Hydrogen is burned explosively in stellar explosions such as novae, X-ray bursts, X-ray pulsars, and supemovae, as well as possibly in other exotic astrophysical environments such as accretion disks around black holes, Thorne-Zytkow objects, and supermassive stars. Temperatures in these environments range from 107 to 109 K and above, and densities from 102 to 106g/cm3. In such sites, | N.Shu M.S.Smith D.W.Bardayan J.C.Blackmon D.W.Bardayan R.L.Kozub P.D.Parker Y.S.Chen | 2001 | Annual Report of China Institute of Atomic Energy2001，，0： | 0 |
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