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21.
D. Batani A. Conti A. Masini M. Milani M. Costato A. Pozzi E. Turcu R. Allot N. Lisi F. Musumeci A. Triglia 《Il Nuovo Cimento D》1996,18(5):657-662
Summary Soft-X-rays irradiation of yeast cells allows selective interference with different cellular structures. The monitoring of
different physical parameters leads to substantial variations in the response to X-rays showing that monotonicity should not
be taken for granted.
Also at INFM (Istituto Nazionale di Fisica della Materia). 相似文献
22.
Eligio Lisi 《Progress in Particle and Nuclear Physics》2010,64(2):171-177
Established results on neutrino mass, mixing and flavor change (as of 2009) are briefly reviewed. Status and prospects of unknown neutrino properties (smallest mixing angle, Dirac/Majorana nature, absolute masses and their hierarchy) are also discussed. 相似文献
23.
Yongqiang Dong Qingqing Fang Huan Wu Lisi Wan Yuhong Lin Chun‐Hua Lu Yuwu Chi Huang‐Hao Yang 《Particle & Particle Systems Characterization》2016,33(12):916-923
Fullerene‐structural carbon‐based dots (f‐CDs) are synthesized for the first time by chemically oxidizing fullerene molecules (C60) using concentrated HNO3. The lateral sizes of the f‐CDs distribute in the range of 7–20 nm, and the heights mainly range from 0.4 to 1.3 nm with an average value of 0.7 nm. The presence of massive pentagonal carbon units makes the f‐CDs different from most of graphitic‐CDs in structure and morphology. The f‐CDs exhibit unique luminescent properties such as photoluminescence (PL) and electrochemiluminescence. Based on the investigation of the UV–vis absorption and luminescent properties, a novel and reasonable model is proposed for the PL mechanism of f‐CDs. Furthermore, the obtained f‐CDs show low cytotoxicity and have potential application in cell imaging. 相似文献
24.
建立电感耦合等离子体质谱法测定包装饮用水中15种元素含量.利用在线内标校正,消除质谱干扰,样品经过膜过滤、酸化后直接测定.包装饮用水中15种元素的质量浓度在10~100μg/L内与质谱响应值线性良好,相关系数均不小于0.9990,检出限为0.0001~0.0524μg/L,样品加标回收率为93.2%~104.2%,相对... 相似文献
25.
The water + cyclodextrin + poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) mixtures have been investigated
to explore the temperature effect on the aggregation of the copolymer in the presence of cyclodextrins (CDs). The CDs with
different cavity sizes were chosen because they may include either the hydrophilic poly(ethylene oxides) block or both kinds
of blocks. The differential scanning calorimetry and viscosity experiments straightforwardly evidenced that the critical micellar
temperature is shifted to larger values by adding a CD which is able to include the middle poly(propylene oxide) block while
it is not influenced by the presence of CD which is selective to the poly(ethylene oxide) block. The enthalpy of aggregation
decreases upon the CD addition for all the investigated systems. 相似文献
26.
The gold(I)-catalyzed synthesis of 2-fluoroalkyl imidazole derivatives was developed. Catalyzed by gold(I), propargyl amidines underwent a 5-exo-dig cyclization to afford 2-fluoroalkyl-5-methyl imidazoles. Also, 2-fluoroalkyl imidazole-5-carbaldehydes were obtained in the presence of NIS. A mechanism investigation manifested the probable process and the carbonyl oxygen derived from O(2). 相似文献
27.
Americo Inglese Fabio Mavelli Rosario De Lisi Stefania Milioto 《Journal of solution chemistry》1997,26(3):319-336
Densities of binary mixtures of polar organic solvents with alcohols were measured at 25‡C. The solvents studied were N,N-dimethylformamide,
dimethylsulfoxide, and formamide while alcohols were butanol, pentanol, hexanol, and 1,4-butanediol. Density measurements
of hydrocarbons (from pentane to dodecane and some heptane isomers) + N,N-dimethylformamide were also performed. From these
data the apparent molar volumes of alcohols and hydrocarbons as functions of concentration were calculated. The standard partial
molar volumes were obtained by extrapolation to infinite dilution and are discussed in terms of group contributions. 相似文献
28.
We introduce a general scheme to realize perfect storage of quantum information in systems of interacting qubits. This novel approach is based on global external controls of the Hamiltonian that yield time-periodic inversions in the dynamical evolution allowing a perfect periodic quantum state reconstruction. We illustrate the method in the particularly interesting and simple case of spin systems affected by XY residual interactions with or without static imperfections. The global control is achieved by step time inversions of an overall topological phase of the Aharonov-Bohm type. Such a scheme holds both at finite size and in the thermodynamic limit, thus enabling the massive storage of arbitrarily large numbers of local states, and is stable against several realistic sources of noise and imperfections. 相似文献
29.
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