Still no phonological typicality effect on word reading time (and no good explanation of one, either): A rejoinder to Farmer, Monaghan, Misyak, and Christiansen.

In this brief rejoinder, we respond to Farmer, Monaghan, Misyak, and Christiansen (2011). We argue that the data still do not support the claim that reading time is affected by the phonological typicality of a word for its part of speech. We also question Farmer et al.'s claim that interleaving syntactic structures in an experiment modifies grammatically based syntactic expectations. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

HST1, a new member of the SIR2 family of genes

A novel Saccharomyces cerevisiae gene, HST1, was identified from among anonymous cDNAs and the complete corresponding genomic clone was isolated and sequenced. HST1 is very closely related to SIR2, showing 71% sequence identity over 84% of its length. Polymerase chain reaction with degenerate primers on S. cerevisiae DNA identified three additional SIR2-related genes designated HST2, HST3 and HST4. The sequences of HST2, HST3 and HST4 correspond to sequences previously released by the S. cerevisiae genome sequencing project as U33335, NCBI gi:965078; X87331, NCBI gi:829135; and Z48784, YD9346.03, respectively. Disruption of HST1 has shown no phenotype with respect to mechanisms in which SIR2 has a role, namely, regional silencing of HMLα, or in rDNA recombination. The sequence of HST1 has been deposited in the DDBJ, EMBL and GenBank at NCBI database under Accession Number L47120.     

High pressure ammonia dissociation experiments for solar energy transport and storage

Work relating to the application of the ammonia dissociation reaction to the thermochemical transport and storage of solar energy is reported. A two-dimensional pseudo-homogeneous packed-bed catalytic reactor model has been adapted to predict the behaviour of ammonia dissociation and synthesis reactors. A series of steady-state experiments, with a high-pressure ammonia dissociator operated in an ‘open-loop’ experimental configuration, have been used to verify the model. These experiments involved operating pressures up to 16 MPa and temperatures up to 720°C. The results indicated an activation energy of 192 kJ mol⁻¹ and a pre-exponential factor of 3.0 × 10⁷mol s⁻¹ cm⁻³ atm⁻¹ for the nickel-on-alumina dissociation catalyst used. The experiments also indicated that the experimental configuration is suitable for development into a ‘closed-loop’ energy storage experiment operating at a power level of approximately 1kW_chem.     

电缆与连接器(六)

3．2．7关于绕线器件（电容、变压器、扼流圈等）的问题 对于绕线（感性）器件,需要从三个方面进行考虑：杂散磁场的控制、特性参数随电流和温度的变化以及电阻特性。     

正降压型稳压器形成了负升压型DC/DC转换器

电源设计师能够在众多现有的正降压型稳压器中进行选择,而这些稳压器亦可用作负升压型DC/DC转换器.有些降压型稳压器具有一个显然是针对这一用途的负反馈基准电压,但是它们在数量上远不及那些具有正基准反馈电压的IC.设计师可通过采用一个正降压型开关模式稳压器并利用这些多品种的器件来制作一款出色的负升压型稳压器,这只需对典型的降压型转换器配置进行少量的微调便可大功告成.     

Identification of straight-chain fatty acids in coal extracts and their geochemical relation with straight-chain alkanes

Mono-carboxylic, straight-chain fatty acids are present in extracts of lignite and subbituminous coal (0.4–1.0 wt%, daf basis), but not in those of a bituminous coal. They are removed with nearly equal ease by both solvent and supercritical gas (SCG) extraction. Octacosanoic acid is the major constituent, and values of the carbon preference index (even over odd) lie between 2 and 6. Solvent extraction of the coals also removes small quantities (< 0.08 wt%) of straight-chain alkanes which are closely related in composition to the straight-chain fatty acids and are probably derived from them during maturation. However, previous SCG extraction of the coals yielded much larger quantities of straight-chain alkanes (0.3–0.7 wt%). Pyrolysis experiments with a lignite fatty acid fraction and with tetracosanoic acid show that these acids largely survive SCG extraction and, therefore, are not the main source of the relatively large quantity of straight-chain alkanes in these extracts.     

Who will drive technological advance?

Electronic materials and packaging have been inexorably drawn along with the relentless march of technology. The complexity and capability of electronics increases with technology, yet it reduces the size and simplifies the shape of the materials and components that go to make up electronics. Whilst basic research into materials and packaging can be targeted into the areas of concern the main thrust for improvements is, of necessity, controlled by the specific needs of the product and the market.     

Problems with the mass spectrometric determination of tritium from cold fusion

Among the attempts to measure particles produced in the cold fusion of deuterium in palladium metal is the mass spectrometric observation of tritium. An experiment which has been reported in the popular press involves attaching a hollow Pd electrode to a vacuum chamber and measuring the tritium produced during electrolysis using a mass spectrometer. We present data demonstrating that mass 5 and 6, which could be mistaken for the ions DT⁺ and T₂ ⁺, can arise from ion-molecule reactions in the ionizer of the mass spectrometer giving the ions HD₂ ⁺ and D₃ ⁺. With H₂ and D₂ present in the vacuum chamber, there are at least eight reactions which lead to these triatomic species, and these may contribute to a complex time and pressure dependence of the signals.