“后碳”社会皖北篾器的审美现象和工艺创新

"后碳"社会为皖北篾器工艺的生存发展带来了新的传承和创新路径。用现象学的相关概念和内容研究"后碳"下皖北篾器呈现的审美现象和独特的审美内容。从民俗审美、视觉审美、生活审美三个方面分析皖北篾器的审美现象:精编细作的工艺美、韵律节奏共存的图案美、造型美和色彩美。一则可以从审美现象学上传习、创新皖北篾器的视觉影像;二则为篾器的工艺传承和创新带来新的思维触角。

“后碳”理念下皖北篾器工艺的生态传承

皖北篾器工艺,在当今发展过程中进入了滞后和趋于消失的境地。“后碳”社会和理念为它们的生存发展带来了新的传承路径。研究皖北乡土景观场域保护和生态传承、篾器工艺材料转化和传承、艺术原生态保护、传承人生态性保护可以为皖北篾器的当代产业化发展、皖北篾器工艺传承和生态传承带来可持续性发展。在以创新驱动引领下的当代中国,对皖北篾器工艺的研究,近则可以传承皖北的篾器工艺,远则为背后的手工艺精神在当代的传承和发展带来契机。

“后碳”时代皖北篾器的新产品开发策略分析

在对皖北篾器产品的SWOT分析、产品调研和产品定位的基础上,对皖北篾器使用领域、原生态创新和新产品开发的可行性路径进行分析。提出了综合运用多种材料、系列化与交互式产品开发以及运用产品符号学等开发策略,对于革新皖北篾器工艺乃至全国篾器新产品设计开发和"工匠"精神的时代性延展与开拓都具有理论价值和实践引导意义。

强化后期氮素营养对提高水稻结实率及改善米质的作用

加强后期氮素营养能提高杂交水稻碳氨同化能力和结实率,稻米的蛋白质和八种必需氨基酸含量、谷类蛋白的赖氨酸和苏氨酸也有提高。

Influence of transition metal modification of oxide-derived Cu electrodes in electroreduction of CO_2

The modification of oxide-derived Cu electrode with Ni, Zn, and Au was examined to improve the catalytic activity of COz electroreduction. The experimental results showed that Ni modification increased the Faraday efficiency of the formation of formic acid and n-propanol. The Faraday effi- ciency relating to the formation of the liquid products was as high as 34.3% at -1.5 V versus the saturated calomel electrode reference potential. In contrast, modification with Zn reduced the for- mic acid formation efficiency but enhanced the alcohol formation efficiency. Finally, modification with Au suppressed the selectivity toward the formation of both formic acid and alcohols.

Cyclic metallurgical process for extracting V and Cr from vanadium slag: Part Ⅱ. Separation and recovery of Cr from vanadium precipitated solution

Cyclic metallurgical process for separation and recovery of Cr from vanadium precipitated solution by precipitation with PbCO_(3)and leaching with Na_(2)CO_(3)was investigated.The concentration of Cr residue in the solution decreases from 2.360 to 0.001 g/L by adding PbCO_(3)into vanadium precipitated solution according to Pb/Cr molar ratio of 2.5,adjusting the pH to 3.0 and stirring for 180 min at 30℃.Then,the precipitates were leached with hot Na_(2)CO_(3)solution to obtain leaching solution containing Na_(2)CrO_(4)and leaching residue containing PbCO_(3).The leaching efficiency of Cr reaches 96.43%by adding the precipitates into 0.5 mol/L Na_(2)CO_(3)solution with the mass ratio of liquid to solid(L/S)of 10:1 mL/g and stirring for 60 min under pH 9.5 at 70℃.After filtration,leaching residue is reused in Cr precipitation and leaching solution is used to circularly leach the Cr precipitates until Na_(2)CrO_(4)approaches the saturation.Finally,the product of Na_(2)CrO_(4)·4H_(2)O is obtained by evaporation and crystallization of leaching solution.

C-I codoped porous g-C_3N_4 for superior photocatalytic hydrogen evolution

Porous C‐I codoped carbon nitride materials were synthesized by in‐situ codoping with iodized ionic liquid followed by post‐thermal treatment in air.The effects of doping content of C‐I codoping with different amounts of ionic liquid on the structural,optical and photocatalytic properties of the samples were investigated.Characterization results show that more compact interlayer sacking can be achieved by post‐thermal treatment.Combined with C‐I codoping by insertion of ionic liquids,much enlarged surface area but optimized sp2 conjugated heterocyclic structure can be found in the catalysts.Optical and energy band analysis results evidence that the light absorptions especially in visible light region are significantly improved.Although the band gap of porous C‐I codoped samples enlarge because of the generation of porous,the negatively shifted conduction band position thermodynamically supplies stronger motivation for water reduction.Photoelectricity tests reveal that the photo‐induced electron density was increased after C‐I codoping modification.Also,the recombination rate of electron‐hole pairs is remarkably inhibited.The catalysts with moderate C‐I codoing content perform sharply enhanced photocatalytic H2 evolution activity under visible light irradiation.A H2 evolution rate of 168.2μmol/h was achieved and it was more than 9.8 times higher than pristine carbon nitride.This study demonstrates a novel non‐metal doping strategy for synthesis and optimization of polymer semiconductor with gratifying photocatalytic H2 evolution performance from water hydrolysis.

Assess the Denitrification Performance of Fermented and Dark-fermented Biosolids as External Carbon Sources Using Sequence Batch Reactors （SBRS）

The study has assessed the denitrification performance of fermented and dark-fermented biosolids as external carbon sources using lab-scaled Sequencing Batch Reactors （SBRs）. This was done by adding fermented and dark-fermented biosolids into anoxic zones of two SBRs, and then assessing the change of effluent characteristics comparing to before adding and to a third controlled reactor. The results showed that by adding 150-170 mg rbCOD/L of either of the selected fermented biosolids, almost complete denitrification could be reached for tested SBRs （reduced from initial -20 mg NO3/L to 〈 1 mg NO3/L）. Finally, the experiment also found that the impact of NI-I4 components of fermented and dark-fermented biosolids onto the final effluent were much lesser than expected, where only less than 2.5 mg NH4/L were detected in the effluent, much lower than the added 5.0-5.7 mg/L.

碳中和的生态学透视

在简述碳中和概念的基础上,重点对碳中和的实现途径及生态系统碳汇的重要性进行了评述,认为碳减排和碳增汇是实现"碳中和"的两个决定因素;碳减排的核心是节能、调结构、增效和发展清洁能源,碳增汇的核心是生态保护、建设和管理。由于植被自然生长和生态建设等因素,中国陆地生态系统发挥了,并将在未来继续发挥着重要的碳汇作用。为增强生态系统的固碳能力,作者提出"三优"生态建设和管理原则,即"最优的生态系统布局、最优的物种配置、最优的生态系统管理"。此外,文章还对"后碳中和"时代可能出现的问题和挑战进行了展望,认为碳中和后,由于气候变化,特别是大气CO_(2)浓度增速减缓甚至下降等因素,可能导致全球性的植被生产力下降,对此可能带来的新的环境问题需要提前谋划和应对。