Nutrient composition, mineral content and the solubility of the proteins of palm weevil, Rhynchophorus phoenicis f. （Coleoptera： Curculionidae）

Adult (ADS) and larva stages of palm weevil Rhynchophorus phoenicis were analyzed for their nutritional potentials using proximate and mineral contents as indices. The early larva stage (ELS) contains the highest moisture content of 11.94% while ADS has the least value of 4.79%. The late larva stage (LLS) has the highest protein content of 10.51% while ADS contains 8.43%. Ash content is highest in ELS with a value of 2.37% and lowest in ADS with a value of 1.43%. ELS and LLS have the highest (22.14%) and lowest (17.22%) fibre contents respectively. The values of potassium, magnesium and iron in ELS were (455.00±21.21), (60.69±2.57) and (6.50±3.40) mg/kg while LLS recorded (457.50±10.61), (43.52±1.37) and (6.00±1.10) mg/kg and ADS recorded (372.50±24.75), (53.31±1.88) and (22.90±3.70) mg/kg. Chromium, phosphorus, nickel, calcium, lead, man- ganese and zinc were also detected. Copper was not detected in any of the samples. In all the developmental stages the protein solubilities were pH dependent with the minimum protein solubilities occurring at acidic pH while the maximum protein solu- bilities occurred at alkaline pH.     

分子筛AlPO-53,SAPO-34和AlPO-5的甲烷储存研究

磷酸铝分子筛拥有规则的多孔结构,具有吸附、储存甲烷的能力,以前的研究报道多侧重于它们储存量的研究而对它们结构与吸附量关系的研究报道很少。实验研究了磷酸铝分子筛AlPO-53,SAPO-34和AlPO-5在温度273 K和303 K、压力100-2000kPa条件下的甲烷储存性质并讨论它们的储甲烷量与其结构之间的关系。在实验条件下,具有笼形结构的SAPO-34（0.38×0.38 nm）具有最大的甲烷储存量（2.35mmol/g,273 K,2000 kPa）,而具有笼形结构的AlPO-53（0.31×0.43 nm）和具有直孔型孔道的AlPO-5（0.73×0.73 nm）的甲烷储存量相当（1.54 mmol/g,273 K,2000 kPa）,均低于SAPO-34分子筛。结果表明,分子筛的笼型结构对其甲烷的储存量至关重要,具有最佳吸附孔径的微孔吸附剂,只有具有了笼型结构才可能具有好的甲烷储存能力;孔口小于甲烷动力学直径的有笼型结构的微孔吸附剂也能具有较大的甲烷储存能力。     

谈初级汉语词汇感的培养

本文针对初级学生学习汉语时出现的词汇记忆和学习的难点，根据认知心理学的理论，提出词汇感的层次培养方案，并据此提供一些方法与手段，帮助学生建立良好的词汇感。     

MOTOMAN-EA1400N机器人控制电路的改进

MOTOMAN-EA1400N焊接机器人在使用中,出现1302重大报警,检查结果为电源接通单元JZNC-NTU01基板损坏。通过采用隔离电路的形式,加装小型电磁继电器等,投入少,安装方便、简易,彻底解决了电源接通单元JZNC-NTU01基板损坏问题,节约了维修成本,提高了生产效率。     

完善创新体系 增强研发能力

<正>云南省公路开发投资有限责任公司成立于2006年5月28日,是云南省人民政府出资成立的国有独资企业,属云南省省属国有重要骨干企业之一,注册资本50亿元人民币,目前拥有固定资产1256亿元。公司作为省政府授权的投资主体,在云南省交通运输厅的领导下,承担云南省高等级公路的投融资、建设、管理和公路沿