中国光伏产业政策、市场趋势及发展对策建议

在全球能源转型加速推进的背景下,传统化石能源引发的环境负外部性问题日益凸显,推动可再生能源发展已成为全球共识。中国光伏产业经过十余年发展,已在技术研发、市场规模、出口体量等维度确立全球引领地位,但当前正经历从高速增长向波动调整的结构性转变。通过梳理我国光伏产业政策演进路径,结合市场供需格局与技术发展现状,系统分析产业面临的四大挑战：产能过剩引发低价竞争、技术迭代导致资产减值风险、地缘政治加剧海外市场拓展困境,以及消纳并网存在体制机制障碍。对此,针对性提出四方面对策建议：优化产业结构化解过剩产能、强化技术创新投入降低迭代风险、实施多元化战略拓展国际市场、完善电力系统提升消纳能力。     

Entry into imaginary space: Metaphors of transition and variations in the affective quality of potential space in children’s literature.

In this article the authors use the imaginal worlds of three children’s stories to explore variations in the affective quality of potential space. Lewis Carroll’s Alice in Wonderland, C. S. Lewis’ The Lion, the Witch, and the Wardrobe, and Norton Juster’s The Phantom Toolbooth, each contain a metaphor of transition in which the protagonist moves from the real space of the narrative into the imaginary space where the action takes place—the protagonists are altered and alter their own worlds. The authors will use these metaphors as analogues to differing qualities of imaginary space, including the collapse of meaning in schizoid states, the play of meaning in mentalization and the adventurousness of negotiating separation. These metaphors of transitioning into imaginary space may be used to think about disruptions in development as they manifest in clinical process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

江西省国有钨矿山资源现状与潜力分析

江西省国有大中型钨矿山经过“关闭破产,转制重组”重现生机,但资源现状不容乐观。笔者分析江西省国有钨矿山资源现状和资源潜力,提出矿山今后加强接替资源勘查等4条发展对策和措施。     

大型转炉过程精确控氧技术

转炉冶炼中的氧是产生钢中夹杂物的根源,对钢的洁净度有着不利的影响。为了加强转炉氧含量的控制,提高产品的内在质量,通过对宣钢转炉冶炼特殊钢现场试验研究,分析了转炉氧含量的分布状态,研究了氧活度、氧电势、炉渣厚度等因素对氧含量的影响规律,并提出了降低转炉氧含量的措施。     

In the zone: Flow state and cognition in older adults.

The current study investigated the nature of the flow state among older adults. Flow is a pleasurable experiential state that occurs during full-capacity engagement in which an individual is performing at a level that is matched with the demands of the task. Each participant completed a scale assessing dimensions of flow in a particular activity selected by the participant. More cognitively demanding activities elicited higher levels of flow for those with higher fluid ability, but lower levels of flow for those with lower fluid ability. This pattern was reversed for activities that were low in demand. Our data highlight the potential importance of considering motivational states such as flow in understanding cognitive optimization in adulthood. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

攀钢高炉渣铁氧势测定实验研究

采用ＺｒＯ＿２基的固体电解质管，参比极选用Ｃｒ，Ｃｒ＿２Ｏ＿３粉，电极引线用Ｍｏ丝，用高温水泥封装特制的定氧探头具有良好的稳定住，实验测定含钛高炉渣的氧势是成功的。测定结果表明，攀钢高炉渣氧分压约为１．０１３２５×１０￣（－９）ｐａ，比其它普通高炉渣高１００倍左右。     

铸咀型腔铝熔体流态分析

以两种铸咀型腔熔体流动为研究对象,分析了在常规铸轧和超薄快速铸轧时,铸咀型腔的熔体速度,型腔结构,熔体流动雷诺数的变化对铝熔体流态的影响规律,并得出结论：无论是常规铸轧还是超薄快速铸轧,铸咀型腔体流动都存在不同强度的紊流区域,但是在铸咀出口处为准层流。     

Thermal and chemical analysis of massive use of hot briquetted iron inside basic oxygen furnace

The integrated steelmaking cycle based on the blast furnace-basic oxygen furnace (BOF) route plays an important role in the production of plain and ultra-low carbon steel, especially for deep drawing operations.BOF steelmaking is based on the conversion of cast iron in steel by impinging oxygen on the metal bath at supersonic speed.In order to avoid the addition of detrimental chemical elements owing to the introduction of uncontrolled scrap and in order to decrease environmental impact caused by the intensive use of coke for the production of cast iron, HBI (hot briquetted iron) can be used as a source of metal and a fraction of cast iron.Forty industrial experim ental tests were perform ed to evaluate the viability of the use of HBI in BOF.The experimental campaign was supported by a ther-mal prediction model and realized through the estimation of the oxidation enthalpy.Furthermore, the process was thermodynamically analyzed based on oxygen potentials using the off-gas composition and the bath temperature evolution during the conversion as reference data.     

Athletic classmates, physical self-concept, and free-time physical activity: A longitudinal study of frame of reference effects.

The systematic analysis of factors that promote or impede physical activity in children is an urgent task for educational researchers. The present study investigated the reciprocal relationship between physical self-concept, teacher-assigned grades in physical education classes, and free-time physical activity, and analyzed positive and negative consequences of being in a class with high class-average physical ability. Data from a large, representative sample of 1,095 preadolescents from 66 classrooms were examined within a longitudinal framework. Multilevel analyses showed that membership in a class with high class-average physical ability was associated with lower physical self-concept and free-time physical activity and highlighted the significant role of teacher-assigned grades in the development of physical self-concept and physical activity. Furthermore, as predicted, there were positive reciprocal effects between physical self-concept and physical activity levels. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

福利国家矛盾中的工作伦理探析——以“奥菲悖论”为视角

工作伦理是对工作关系的规范及其行为理由的探究,近代凯恩斯主义福利国家困境表现出的动力不足是病态工作伦理和福利国家矛盾恶性循环的结果。＂奥菲悖论＂深刻地揭示了福利国家机制的内在矛盾,也指出福利国家机制弱化了规范和约束劳动者的内生职责与外在职责,因而赋予逃避工作以可能性与正当性。福利政策的改革需要恢复工作伦理的规范作用,解决工作的动力问题。     

CO-H_2-H_2O气氛下金属尘化腐蚀的热力学分析

金属材料在CO-H2-H2O合成气氛使用过程中会发生金属尘化腐蚀。运用化学热力学理论与计算方法对在CO-H2-H2O气氛下发生金属尘化腐蚀时的标准反应吉布斯函数进行计算,得到了气氛碳活度与温度的关系式。通过气氛碳活度与材料碳活度的比较,获得两种金属尘化类型。CO-H2-H2O气氛碳的化学势受温度、气氛组成、总压的影响,减少H2O的含量,升高总压,会使发生金属尘化的温度范围扩大。     

Surface ξ potential and photocatalytic activity of rare earths doped TiO2

The iso-electric point of different rare earths （La, Ce, Y） doped anatase TiO2 was set out, and three organisms with different sur- face electrical properties （methylene blue trihydrate-positive electricity, methyl orange-negative electricity, methyl red-neutral electricity） were selected as photodegradable models. The result showed that the photocatalytic activity of 0.5wt.%Y ions doped anatase TiO2 was better than those of the others. The relationship between Zeta （ξ） potential and the photocatalytic activity of different RE doped anatase TiO2 were also investigated. The Y-doped anatase TiO2 was found with the special two iso-electric points and three ξ potential values.     

钢液定氧测头响应时间和热平衡态

本文分别研究了ZrO₂(MgO)固体电解质管头壁厚、参比电极量对定氧测头响应时间的影响,得出了以ZrO₂管头壁厚为0.60~0.80mm,Cr/Cr₂O₃参比电极加入量为40~60mg所组成的定氧测头响应速度最快.同时采用了     

Thermodynamical Evaluation on Magnetocaloric Effect of Magnetic Refrigerating Materials Near Room Temperature

The relationship between isothermal magnetic entropy change △S and adiabatic temperature change △Tad was deduced according to the principles of thermodynamics. The MCE and the engineering application were discussed for Gd and several new kinds of magnetic refrigerating materials near room temperature, Gd5Si2Ge2, MnFeP0.45As0.55 and LaFe11.2Co0.7Si1.1. Isothermal entropy change is proportional to adiabatic temperature change with a factor of T/C (T is temperature, C is heat capacity). When the comparison of magnetacoloric effect is made for two different materials, we should consider isothermal entropy change as well as adiabatic temperature change.