可再生能源的开发与利用

为了人类持久的能源供应及日益严重的环境问题，由石化能源逐步过渡到以再生能源为主的时代终将来临。本文简单介绍了新能源在我国发展的优势、条件及目前的发展状况。     

Potential of CE for the determination of inorganic and acidic anions in cyanoacrylate adhesives

In this work, a CZE method with indirect UV detection was developed for the simultaneous determination of the inorganic and acidic anions, chloride, sulfate, nitrate, fluoride, formate, phosphate, diethylphosphate, methyl sulfonate, cyanoacetate, and methacrylate present in cyanoacrylate adhesives. Chromate was employed as the probe ion, and the EOF was reversed by incorporating CTAB into BGE. Detection limits of 0.7-4.6 microg/mL were obtained for all the anions studied. The CE method developed is a significant improvement on traditionally used chromatographic methods such as ion chromatography, as it resulted in shorter analysis times with enhanced separation efficiencies. This method was successfully employed for the analysis of inorganic and acidic anions in cyanoacrylate adhesive samples.     

Water as the reaction medium in organic chemistry: from our worst enemy to our best friend

A review presenting water as the logical reaction medium for the future of organic chemistry. A discussion is offered that covers both the “on water” and “in water” phenomena, and how water is playing unique roles in each, specifically with regard to its use in organic synthesis.

A review that highlights water as the logical reaction medium in which organic chemistry can be practiced. The key roles that water can play in directing reaction outcomes, including impacting mechanistic features, are discussed using selected examples.     

Sugeno测度空间上的一类回归估计问题的界

在Sugeno测度空间上进一步探讨了统计学习理论.给出了Sugeno测度空间上gλ随机变量的条件期望的定义;在Sugeno测度空间上利用带加性噪声的观测数据,建立了一个由级数展开表达的回归估计模型,并针对此模型给出并证明了它的一个界.     

Spectroscopy and dynamics of the isolated sp2 CH chromophore in trideuteroacetaldehyde CD3CHO as derived from extrapolated SDCI ab initio calculations

Ab initio CI potential energy (PES) and dipole moment (DMS) surfaces have been calculated with singles and doubles excitation configuration interaction (SDCI) for the 2-dimensional isolated sp² CH chromophore subspace of trideuteroacetaldehyde (CD₃CHO). Different extrapolation schemes to full-CI have been applied after the extrapolation to full-SDCI. Vibrational band centres and absolute intensities are determined variationally on six extrapolated surfaces. The band centres are analysed within the effective Hamiltonian model for isolated CH chromophores and the effective spectroscopic parameters are compared for the different extrapolation schemes. Time dependent population evolution for vibrational quantum motion with a pure CH stretching state being initially populated is calculated for some of the extrapolated surfaces within the effective Hamiltonian model.     

高单体浓度下反相微乳液聚合

选择丙烯酰胺（ＡＭ）、丙烯酸胺／丙烯酸钠（ＡＭ／ＳＡ）和丙烯酰胺／（２－甲基丙烯酰氧乙基）三甲基氯化铵（ＡＭＡＩＭ．ＭＣ）为单体（对），在相同的实验条件下进行反相微乳液（共）聚合，得到各自的动力学关系式，并对其做了解释．     

Studies into using manure in a biorefinery concept

Animal manure is an underutilized biomass resource containing a large amount of organic carbon that is often wasted with the existing manure disposal practices. A research project funded by the US Department of Energy explored the feasibility of using manure via the sugar platform in a biorefinery, converting the carbon from fiber to biochemicals. The results showed that (1) fiber was the major component of manure dry material making up approx 50%, 40%, and 36% of the dry dairy, swine, and poultry manure material, respectively; within dairy manure, more than 56% of the dry matter was in particles larger than 1.680 mm; (2) in addition to being a carbon source, manure could provide a variety of nutrient for fungi T. reesei and A. phoenicis to produce cellulase; (3) the hemicellulose component in the manure fiber could be readily converted to sugar through acid hydrolysis; while concentrated acid decrystallization treatment was most effective in manure cellulose hydrolysis; (4) purification and separation was necessary for further chemical conversion of the manure hydrolysate to polyols through hydrogenation; and (5) the manure utilization strategy studied in this work is currently not profitable.     

Resonance Raman studies of HOO-Co(III)bleomycin and Co(III)bleomycin: identification of two important vibrational modes, nu(Co-OOH) and nu(O-OH)

Bleomycin is an antitumor agent whose cytotoxicity is dependent on its ability to bind DNA in the nucleus and effect double-stranded DNA cleavage, which is difficult for the cell to repair. In order for this DNA cleavage to occur, bleomycin must, through a series of reactions, form a low-spin Fe(III) complex, the putative "activated" form of the drug, HOO-Fe(III)bleomycin. The relative strengths of the bonds in the Fe(III)-OOH linkage have not been determined due to the weakness of the hydroperoxo-to-iron(III) charge-transfer transition. The much more stable HOO-Co(III)bleomycin has often been studied as a structural analogue of HOO-Fe(III)bleomycin, and hence, an understanding of the relative bond strengths in the Co-OOH linkage may serve to enhance our understanding of the analogous Fe-OOH linkage. In this report, we present resonance Raman data that identify two important vibrational modes in the Co-OOH linkage, the stretching modes, nu(Co-OOH) and nu(O-OH). Both of these vibrational modes were found to be unperturbed by complexation of the drug with calf thymus DNA. Advantage was also taken of the isostructural realtionship between Fe-bleomycin and Co-bleomycin to analyze and assign the high-frequency modes for HOO-Co(III)bleomycin and Co(III)bleomycin (A(2) and B(2)). These data could be useful for future studies of photoactivated Co-bleomycin and Co-bleomycin analogues in an attempt to characterize oxygen-independent DNA damage pathways.