再见格拉夫

整整一周没有她的消息,自圣迭哥比赛以后。我想她该在加拿大准备下一站多伦多的比赛,于是整周都操心着自己的事。偶尔默念:“愿上帝保佑格拉夫别受伤。” 万万没有想到—— 8月14日,周六,打开电视,意外地看到她的身影,先是惊奇,接下来犹如五雷轰顶——在我担心了两年的这天终于来了,在我最放心的时候。13号,果真不祥之日。     

Nitrogen addition delays the emergence of an aridity-induced threshold for plant biomass

Crossing certain aridity thresholds in global drylands can lead to abrupt decays of ecosystem attributes such as plant productivity, potentially causing land degradation and desertification. It is largely unknown,however, whether these thresholds can be altered by other key global change drivers known to affect the water-use efficiency and productivity of vegetation, such as elevated CO₂ and nitrogen(N). Using >5000 empirical measurements of plant biomass, we showed that crossing a...     

YTHDF2-mediated regulations bifurcate BHPF-induced programmed cell deaths

N6-methyladenosine(m⁶A) is a critical regulator in the fate of RNA, but whether and how m⁶A executes its functions in different tissues remains largely obscure. Here we report downregulation of a crucial m⁶A reader, YTHDF2, leading to tissue-specific programmed cell deaths(PCDs) upon fluorene-9-bisphenol(BHPF) exposure. Currently, Bisphenol A(BPA) substitutes are widely used in plastic manufacturing.Interrogating eight common BPA substitutes, we detected BHPF in ...     

群体情绪凝聚及其产生机制

Group emotional convergence refers to the phenomenon that group members come to consistent emotional experience in a group over the time. In the previous studies, group emotional convergence may be attributed to the following reasons: First, group norms dramatically allow group members to experience the consistent emotion; second, group members would consider questions from the perspective of a group rather than their own while group identity is induced, therefore experiencing consistent emotions; third, individuals in a group would simulate others’ emotion automatically; and finally, group members may compare their own emotion with others’ in the fuzzy situation to adjust their own emotion, trying to be consistent especially when being inconsistent with others. Such factors as individual traits, group characteristics, group tasks and initial emotional states are likely to affect the group emotional convergence. This research suggests that future research is needed to investigate the boundary conditions of the above-mentioned four mechanisms. It is also needed to explore the group emotional convergence in groups with larger size and in situations where members share strong emotional events.     

什么样的新型研发机构更具有高创新绩效? ———基于TOE 框架的组态分析

以广东省39家新型研发机构为研究样本,运用模糊集定性比较方法（fsQCA）探讨了新型研发机构产生高创新绩效的影响因素及其提升路径。研究发现：（1）单个影响因素难以推动新型研发机构实现高创新绩效,但不同因素的组合构型具有显著影响;（2）存在5条驱动高创新绩效的路径,包括技术驱动政府支撑型、技术驱动环境支撑型、组织支撑生态促进型、生态支撑人才促进型和全维度协同型;（3）非高创新绩效的驱动机制为1条路径,且与高创新绩效的驱动路径存在非对称性关系。研究结论不仅拓展了新型研发机构绩效管理领域的理论,还为政府和新型研发机构优化绩效提升路径提供决策支持。     

致命接触

今天,人类将见证“米开朗基罗计划”的成果。八年前,科学家朝阿尔法A－4行星轨道上的某个位置发射强力激光脉冲信号。四年前,这个脉冲信号到达那里,与A－4行星相遇。今天,它的反射波将回到地球,并带来那个行星的信息。     

超自然之谜（二则）

被压制的发明 治愈癌症和艾滋病的良药？用水作燃料的汽车？完全实用的反引力器械？无线电的传输？这些东西有可能存在吗？看起来是这样。