香蒲绒纤维对机油的吸附性能研究

利用香蒲绒纤维作吸油材料对含油废水中的机油进行处理,阐述了纤维的吸油机理。研究了该纤维对纯机油以及对含水机油的吸附能力,并研究了纤维的重复利用性能。结果表明,香蒲绒纤维对机油有很好的吸附能力,1g纤维能吸附13～20g的纯机油,能吸附含水机油12～18g;吸油后纤维通过挤压即可重复利用,且经过5次重复试验后1g香蒲绒纤维仍能吸附5～10g的含水机油。     

建水古城传统民居生活功能的延续更新研究 ——以南正街112号民宅生活功能延续更新为例

时至今日,对传统民居的保护与发 展尽管逐渐克服了“假古董”肆虐的阶段,但 是如果所谓的“风貌整治”仅仅只留下物质躯 壳,取消民居本身的居住生活功能,进行简单 的功能置换,面对量大面广的民居建筑是不 现实也不可能的;而忽略居住本质的做法, 笔者认为同样是不可取的。文章通过对建水 古城范围内以生活为主的传统民居进行住户 访问及田野调查、归纳分析,依据住户居家需 求、物质形态调整,结合空间分类提升,以南 正街112号民宅生活功能延续更新为例,依据 不同类别的各自情况提出相应的更新应对方 法,从而得出在经济高速发展的今天,通过 适当策略可使传统民居生活功能得以延续更 新的设计尝试。     

建水陶的艺术特色与文化内涵

云南建水陶工艺独特,历史悠久,是我国传统陶瓷工艺中的杰出代表,历史上,它与宜兴陶、钦州陶、荣昌陶齐名。这里试从建水陶产生的自然、文化生态环境为研究背景,以民间实用造物和文人艺术观念两个层面为考察角度,论述建水陶的艺术特征与文化内涵。     

Invasive cattail reduces fish diversity and abundance in the emergent marsh of a Great Lakes coastal wetland

Great Lakes coastal wetlands (GLCWs) provide critical fish habitat. The invasion of GLCWs by hybrid and narrow-leaved cattail, Typha × glauca and Typha angustifolia (hereafter Typha), homogenizes wetlands by out-competing native plant species and producing copious litter. However, the effect of this invasion on fish communities is little known. To measure the effect of Typha on fishes, we established plots in Typha invaded and native wetland emergent zones in a northern Lake Michigan coastal wetland, and measured environmental variables, plants, and fishes in each zone over two summers. Dissolved oxygen and water temperature were significantly lower in invaded compared to native plots. Invaded plots were dominated by Typha and its litter; whereas. sedges (Carex spp.) were the most abundant species in native plots. Fish abundance and species richness were significantly lower in Typha compared to native wetland plots. The Typha fish community was dominated by hypoxia tolerant mudminnow whereas other small, schooling, fusiform species such as cyprinids and fundulids were absent. These results illustrate the negative impact of a dominant invasive plant on Great Lakes fishes that is expected to be found in Typha invasions in other GLCWs.     

1T-WS2 Nanosheet-Modified Biomass Carbon as Sulfur Host for High-Performance Lithium–Sulfur Batteries

The sluggish sulfur reaction kinetics and fast capacity attenuation still pose great challenges to lithium–sulfur (Li–S) batteries. Herein, tubular carbonl (HPOC) is obtained by carbonization of the cattail fiber. 1T-WS₂@HPOC is prepared by solvothermal method, and their sulfur composite, 1T-WS₂@HPOC/S and HPOC/S as sulfur host composite, is obtained by sulfur melting. The composite materials are characterized by scanning electron microscopy, X-ray diffraction, thermogravimetry, X-ray photoelectron spectroscopy, etc. Results show that 1T-WS₂ grows uniformly on the HPOC substrate and has abundant active sites, which can effectively improve the physicochemical adsorption capacity of S-fixation (76 wt%) and polysulfide. Battery assembly and electrochemical performance tests are conducted for the HPOC/S and 1T-WS₂@HPOC/S composites. Results show that the initial discharge capacity of the 1T-WS₂@HPOC/S positive electrode is 1272 mAh g⁻¹ at 0.1 C, higher than the HPOC/S positive electrode (1025 mAh g⁻¹). 1T-WS₂@HPOC/S maintains a discharge capacity of 695 mAh g⁻¹ after 500 cycles at 0.5 C, with a capacity decay rate of only 0.054% per cycle. With a discharge capacity of 504 mAh g⁻¹ after 400 cycles at 1 C, the Coulomb efficiency is 98.9%. The 1T-WS₂@HPOC/S composites with unique structure and excellent electrochemical performance have broad application prospects in the field of Li–S batteries.     

建水县岩风洞铅锌矿区找矿前景分析

建水县岩风洞铅锌矿区地处云南省南部山区,位于老鹰窝-岩风洞铅锌、钼铅、铁、钨成矿远景区内,矿区矿化主要受断裂构造控制,硅化蚀变明显。区内断裂及破碎带为含矿热液的运移、沉淀、富集成矿提供了有利的条件。今后找矿方向应注重在位于燕山期花岗岩与下三叠统永宁镇组(T1y)白云岩接触带上的矽卡岩型Pb、Zn、Ag、W、Sn、Mo等矿床,以及矿区的中部地区及矿区北部的杨朝冲地区的中温热液充填-交代型Pb、Zn、Ag、Cu矿床。     

滇东南建水离子吸附型稀土矿边界品位与工业品位的确定方法

如何实现“规范”规定的边界品位与工业品位与矿山开发利用品位互相协调是评价离子吸附型稀土矿床资源量的重点和难点。本文对建水离子吸附型稀土矿床黏土层、全风化层、半风化层、弱风化层中全相稀土氧化物（TRE₂O₃）和离子相稀土氧化物（SRE₂O₃）变化规律进行研究。研究表明,建水稀土矿的SRE₂O₃受风化层位控制,黏土层较高→全风化层最高→半风化层较低→弱风化层最低,TRE₂O₃含量越高,则SRE₂O₃含量越高,越有利于形成离子吸附型稀土矿床（弱风化层除外）。建水稀土矿床的上矿层与下矿层SRE₂O₃含量、稀土配分及每吨稀土价格等具有显著差异,研究认为应采用“双指标”圈定矿体和估算资源量,即全风化层工业边界品位≥0.070%,最低工业品位≥0.100%;半风化层边界品位≥0.100%,最低工业品位≥0.150%。该方法在同类型稀土矿的资源量评价工作具有推广应用价值。     

清末民初建水紫陶艺术风格形成原因探析

云南建水紫陶由建水民间实用陶器发展演变而来。清末民初,建水文人直接参与制陶或将文人画与建水"阴刻阳贴"、"残帖淡艳"、"无釉磨光"等传统制陶工艺技术相结合,容艺术与技术于一身,从而直接改变了建水制陶的风格和艺术取向,提升了建水陶的艺术品位,使其由民间实用陶器向艺术紫陶发生了巨大转变。     

建水陶的制作技艺与工艺特色

作为与宜兴陶、钦州陶、荣昌陶并称中国四大名陶的云南建水陶,历史悠久、工艺独特,特别是刻坯填泥和无釉磨光工艺在我国传统陶瓷工艺中具有重要的代表意义。但由于地处偏远,观念传统,长期以来不为人所知,当代建水陶艺术创作和理论的研究体系也尚未形成。     

蒲菜气调保鲜贮藏技术研究

研究气调包装对贮藏过程中的蒲菜的营养成分(Vc、粗纤维、总酸、总糖等)的含量变化及外观变化的影响,提出适合蒲菜气调保鲜的包装材料和气体配比。结果表明:气体比例为5%O2∶10%CO2∶85%N2,选用T5保鲜袋,在低温下可保鲜3周,可比对照组延长保鲜期1周。