竹类植物分枝形成的解剖学研究

通过对矢竹（单分枝类型），金镶玉竹（两分枝）和短穗竹（三至多分枝）秆节部芽的形态解剖学研究，得出初步结论：（１）秆节培均仅有一个腋芽。从起源上来讲，秆节部多芽都是由一个腋芽发育，是主腋芽和数个次级腋芽的集合体；（２）秆节部的分枝也系单芽起源。秆节部的多分枝是由一个主侧枝和几个发育在主侧枝上的次级侧枝组成；（３）各种分枝的形成与竹类植物的生长特性和主腋芽早期分化有关。秆节上的主腋芽基部节间很短，着生     

Interpretation neutrality in the classical domain of quantum theory

I show explicitly how concerns about wave function collapse and ontology can be decoupled from the bulk of technical analysis necessary to recover localized, approximately Newtonian trajectories from quantum theory. In doing so, I demonstrate that the account of classical behavior provided by decoherence theory can be straightforwardly tailored to give accounts of classical behavior on multiple interpretations of quantum theory, including the Everett, de Broglie–Bohm and GRW interpretations. I further show that this interpretation-neutral, decoherence-based account conforms to a general view of inter-theoretic reduction in physics that I have elaborated elsewhere, which differs from the oversimplified picture that treats reduction as a matter of simply taking limits. This interpretation-neutral account rests on a general three-pronged strategy for reduction between quantum and classical theories that combines decoherence, an appropriate form of Ehrenfest׳s Theorem, and a decoherence-compatible mechanism for collapse. It also incorporates a novel argument as to why branch-relative trajectories should be approximately Newtonian, which is based on a little-discussed extension of Ehrenfest׳s Theorem to open systems, rather than on the more commonly cited but less germane closed-systems version. In the Conclusion, I briefly suggest how the strategy for quantum-classical reduction described here might be extended to reduction between other classical and quantum theories, including classical and quantum field theory and classical and quantum gravity.     

马尾松种子园嫁接植株的分枝与结实特性探讨

对福建五一林场马尾松种子园嫁接植株分枝与结实特性及二者相互关系的分析表明：（１）每年侧枝数在无性系间未发现显著差异，但年度间差异显著；同一年份侧枝侧枝断面积和两个性状在无性系间具显著差异，不同年度间差异极显著；（２）无性系球果以单果簇，二果簇，三果簇为主，可集中分布在树冠的上部，中部，下部或较均匀分布；（３）某一轮侧 球果产量与该轮侧枝总数无显著相关，但与该轮侧枝断面积和密切相关；单一侧枝的球果产     

Friedel－Crafts反应合成无规支化聚苯乙烯及其支化结构表征

将阴离子聚合所得窄分布聚苯乙烯（ｄ＜１．１）在无水ＺｎＣｌ＿２催化下以氯甲醚对其进行氯甲基化（Ｃ１％＜１．５），再用自制无水ＡｌＣｌ＿３作催化剂，使氯甲基化聚苯乙烯（ＣＭＰＳ）发生大分子链间的Ｆｒｉｅｄｅｌ－Ｃｒａｆｔｓ反应，一步合成主链与支链等长的无规支化聚苯乙烯（ＡＢＰＳ）．研究了支化反应条件及支化结构，实验表明，反应条件：Ｔ＝４０～４５Ｃ、Ｃ＿（ＣＭｐＳ）＝０．１～０，１５ｇ·Ｍｌ￣（－１）、Ｃ＿（ｃａｔ）＝０．０５～０．１ｇ·ｍｌ￣（－１）、ｔ＞ｌ２ｈ达到良好的支化效果，支化臂数为１～２０．     

分枝扩散过程的期望半群

本文在无生成半群及正则性的条件下讨论了分枝扩散过程期望半群的性质,并通过该半群的生成元求出了它的表达式。     

The semileptonic decays of B/Bs meson in the perturbative QCD approach： a short review

In this short review, we present the current status about the theoretical and experimental studies for some important semileptonic decays of B/Bs mesons. We firstly gave a brief introduction for the experimental measurements for B/Bs → P（l＋l-, l-v-l, vv-） decays, the BaBar＇s R（D） and R（D＊） anomaly, the P′5 deviation for B0→ K＊0μ＋μ decay. We then made a careful discussion about the evaluations for the relevant form factors in the light-cone QCD sum rule, the heavy quark effective theory, and the perturbative QCD factorization approach. By using the form factors calculated in the perturbative （pQCD） approach, we then calculate and show the pQCD predictions for the decay rates of many semileptonic decays of B/Bs mesons. We also made careful phenomenological analysis for these pQCD predictions and found, in general, the following points： （a） For all the considered B/Bs semileptonic decays, the next-to-leading order pQCD predictions for their decay rates agree well with the data and those from other different theoretical methods; （b） For R（D） and R（D＊）, the pQCD predictions agree very well with the data, the B aBar＇s anomaly of R （D（＊）） are therefore explained successfully in the standard model by employing the pQCD approach; and （c） We defined several new ratios RD^l,τ and RDs^l,τ, they may be more sensitive to the QCD dynamics which controls the B/Bs→（D（＊）, Ds（＊）） transitions than the old ratios, we therefore strongly suggest LHCb and the forthcoming Super-B experiments to measure these new ratios.     

Semileptonic decays B→D~(*) lυ in the perturbative QCD factorization approach

In this paper,we study the B→D~(*) l-l -ι semileptonic decays and calculate the branching ratios B(B→D~(*) l-l -ι) and the ratios R(D~(*)) and R_D~( l,s) by employing the perturbative QCD(pQCD)factorization approach.We find that(a)for R(D)and R(D*)ratios,the pQCD predictions are R(D)=0.430-0.026?0.021,R(D*)=0.301±0.013 and agree well with BaBar’s measurements of ReD e?T T;(b)for the newly defined R_D~1 and R_D~s ratios,the pQCD predictions are R_D~l=0.450-0.051+0.064 and R_D~s=0.642-0.070+0.081,which may be more sensitive to the QCD dynamics of the considered semileptonic decays than R(D~(*)) and should be tested by experimental measurements.     

连续群S—函数方法在配位场能谱分类中的应用

本文介绍了连续群S—函数分析方法,并利用S—函数计算了八面体强场d~n组态和弱场f~n组态子群链的分支律,表明联系一定修正规则的S—函数方法对配位场能谱分类处理是简便有效的。     

随机环境中分枝过程的比率定理

讨论了独立环境中分枝过程相应的比率定理.     

超过程的分支特征

讨论了超过程分支特征的性质 ,并从分支粒子系统以及超过程灭绝时的角度解释了常见分支特征中各项系数的直观含义。