在对历史的民间审视中透视人性的本真——评董立勃小说《暗红》

新疆实力派作家董立勃以其独特的人生经历、文学体验与丰富的生活积累,创作了一部场景恢宏、壮阔的人生与历史巨作《暗红》。作品在对历史的民间审视中塑造出了人性的复杂,透视出了人性的本真,展现出了民间世界的永恒魅力。

在对历史的民间审视中透视人性的本真——评董立勃小说《暗红》

新疆实力派作家董立勃以其独特的人生经历、文学体验与丰富的生活积累,创作了一部场景恢宏、壮阔的人生与历史巨作《暗红》。作品在对历史的民间审视中塑造出人性的复杂,透视出人性的本真。本文试图从革命历史的独特展示、民间角色的塑造两个方面,对小说中的民间立场、民间情怀进行深入探讨。

下野地里的华丽转身——论董立勃的《暗红》

作为新世纪文学界的"黑马",董立勃的下野地系列作品取得了巨大的成功;然而因为过多的重复自我也引起了非议。董立勃深思熟虑后创作的新作《暗红》终于全面成功转型:一、从男女情到兄弟义,二、从垦荒悲歌到历史反思,三、从清新柔美到坚硬冷峻,摆脱了下野地的局限,可谓华丽转身。

Sequencing and Analysis of ITS Sequences of Bangia atropurpurea

[Object]To providing new data for phylogenesis of Bangia atropurpurea by the sequencing of internal transcribed spacer（ITS region）of rDNA.[Method]B.atropurpurea was collected from Niangziguan Spring in Shanxi,the DNA was extracted and the primers were designed for PCR amplification so as to obtain ITS gene sequence.[Result]The homology of ITS region between B.atropurpurea and Porphyra oligospermatangia was 75%,which was 79% between B.atropurpurea and P.yezoensis.[Conclusion]Compared with other genes,the ITS sequence had a greater evolution rate.The differences in classification and distribution resulted in the sequence diversity.

Expression Detection of DMRTs and Two sox9 Genes in Takifugu rubripes (Tetraodontidae, Vertebrata)

Sex determination and sex differentiation are important phenomena in fish, but the mechanisms of sex determination in Takifugu rubripes are poorly understood. In our study, the expression patterns of genes for DMRTs （DMRT1, DMRT2 and DMRT3）,sox9a and sox9b in T. rubripes tissues were verified with the Reverse Transcription （RT）-PCR detection. It is showed that DMRT1 expressions in testis and ovaries were much lower, and no expressions were fotmd in muscle, blood and tailfin. However, expressions for DMRT2 and DMRT3 were not found in the tissues stated above. Transcripts of sox9a were detected in muscle, fin, ovary and testis, but not in blood, whereas sox9b expression was only detected in ovary. The expression patterns of DMRTs, sox9a and sox9b in T. rubripes gonads suggest that these genes may not be sex-specific.

Holography,UV/IR Relation,Causal Entropy Bound,and Dark Energy

The constraint on the total energy in a given spatial region is given from holography by the mass of a black hole that just fits in that region, which leads to an UV/IR relation： the maximal energy density in that region is proportional to Mp^2/L^2, where Mp is the Planck mass and L is the spatial scale of that region under consideration. Assuming the maximal black hole in the universe is formed through gravitational collapse of perturbations in the universe, then the ＂Jeans＂ scale of the perturbations gives a causal connection scale RCC. For gravitational perturbations, RCC^-2= Max （H＋ 2H^2, -H） for a fiat universe. We study the cosmological dynamics of the corresponding vacuum energy density by choosing the causal connection scale as the IR cutoff in the UV/IR relation, in the cases of the vacuum energy density as an independently conserved energy component and an effective dynamical cosmological constant, respectively. It turns out that only the case with the choice RCC^-2 = H＋ 2H^2, could be consistent with the current cosmological observations when the vacuum density appears as an independently conserved energy component. In this case, the model is called holographic Ricci scalar dark energy model in the literature.

垦荒叙事的文化原型与伦理蕴涵——论董立勃的小说创作

董立勃无疑是当代军垦文学的重要代表作家,凭借《白豆》《白麦》《烧荒》《烈日》《流沙如水》《暗红》等长篇小说坚持对垦荒的叙说,成为垦荒叙事中成就最高、最专情和持久的一位作家。因此,我们选择董立勃及其小说作为垦荒叙事的研究对象,探究垦荒叙事的当代特质。

Redshift drift constraints on holographic dark energy

The Sandage-Loeb （SL） test is a promising method for probing dark energy because it measures the redshift drift in the spectra of Lyman-o： forest of distant quasars, covering the ＂redshift desert＂ of 2 ≤ z ≤ 5, which is not covered by existing cosmological observations. Therefore, it could provide an important supplement to current cosmological observations. In this paper, we explore the impact of SL test on the precision of cosmological constraints for two typical holographic dark energy models, i.e., the original holographic dark energy （HDE） model and the Ricci holographic dark energy （RDE） model. To avoid data inconsistency, we use the best-fit models based on current combined observational data as the fiducial models to simulate 30 mock SL test data. The results show that SL test can effectively break the existing strong degeneracy between the present-day matter density Ωm0 and the Hubble constant 1-1o in other cosmological observations. For the considered two typical dark energy models, not only can a 30-year observation of SL test improve the constraint precision of Ωm0 and h dramatically, but can also enhance the constraint precision of the model parameters c and α significantly.

Implications of the cosmic infrared background excess for the cosmic star formation

By phenomenologically describing the high-redshift star formation history, i.e., ,ρ.（z） oc [（1 ＋z）/4.5]-% and semi-analytically calculating the fractions of high-redshift Pop I/II and Pop II! stars, we investigate the contributions from both high-redshfit Pop I/II and Pop II/stars to the observed near-infrared （3 μm 〈// 〈 5 μm） excess in the cosmic infrared background emission. In order to account for the observational level of the near-infrared excess, the power-law index or of the assumed star formation history is constrained to within the range of 0 ≤a≤1. Such a constraint is obtained under the condition that the viral temperature of dark matter halos belongs to the range of 500 K ≤ Tvir≤ 104 K.

Search for strong gravitational lensing effect in the current GRB data of BATSE

Because gamma-ray bursts （GRBs） trace the high-z universe, there is an appreciable probability for a GRB to be gravitational lensed by galaxies in the universe. Herein we consider the gravitational lensing effect of GRBs contributed by the dark matter halos in galaxies. Assuming that all halos have the singular isothermal sphere （SIS） mass profile in the mass range 101~h 1Mo 〈 M 〈 2×10^13h^-1M and all GRB samples follow the intrinsic redshift distribution and luminosity function derived from the Swift LGRBs sample, we calculated the gravitational lensing probability in BATSE, Swift/BAT and Fermi/GBM GRBs, re- spectively. With an derived probability result in BATSE GRBs, we searched for lensed GRB pairs in the BATSE5B GRB Spectral catalog. The search did not find any convincing gravitationally lensed events. We discuss our result and future obser- vations for GRB lensing observation.

Hole-dominated Fowler–Nordheim tunneling in 2D heterojunctions for infrared imaging

Heterostructures based on diverse two-dimensional(2D)materials are effective for tailoring and further promoting device performance and exhibit considerable potential in photodetection.However,the problem of high-density thermionic carriers can be hardly overcome in most reported heterostructure devices based on type I and type II band alignment,which leads to an unacceptably small Iphoto/Idark and strong temperature dependence that limit the performance of photodetectors.Here,using the MoTe_(2)/h-BN/MoTe_(2)/h-BN heterostructure,we report the hole-dominated Fowler–Nordheim quantum tunneling transport in both on and off states.The state-of-the-art device operating at room temperature shows high detectivity of>10^(8) Jones at a laser power density of<0.3 nW μm^(-2) from the visible to near infrared range.In addition,the fast on–off switching and highly sensitive photodetection properties promise superior imaging capabilities.The tunneling mechanism,in combination with other unique properties of 2D materials,is significant for novel photodetection.