DNA Antenna Tile‐Associated Deoxyribozyme Sensor with Improved Sensitivity

Some natural enzymes increase the rate of diffusion‐limited reactions by facilitating substrate flow to their active sites. Inspired by this natural phenomenon, we developed a strategy for efficient substrate delivery to a deoxyribozyme (DZ) catalytic sensor. This resulted in a three‐ to fourfold increase in sensitivity and up to a ninefold improvement in the detection limit. The reported strategy can be used to enhance catalytic efficiency of diffusion‐limited enzymes and to improve sensitivity of enzyme‐based biosensors.     

Preparation of hardened tiles from waste phosphogypsum by a new intermittent pressing hydration

The solid waste phosphogypsum (PG), as the sole-raw material, was processed into hardened tiles with favorable mechanical strength by a novel intermittent pressing hydration process. First, the raw PG with dihydrate gypsum was dehydrated into semi-hydrate gypsum. The dehydrated PG was granulated with water, press-formed, and then immersed in water under intermittent pressing. Using the optimal granulation humidity of 35%, pressing pressure of 20 MPa, pressing frequency of once per 2 min and total times of 24, PG hardened tiles with bending strength of 18.9 MPa was obtained. It was revealed that the dehydrated PG was hydrated into the dense dihydrate gypsum crystals under the action of intermittent pressing, which contributed to the high mechanical strength of the tiles. The hardened tile has the potential to be a new-type wall material and its application may help to solve PG׳s environmental risk.     

南召透闪石—透辉石在陶瓷中的应用研究

南召老庄透闪石－透辉石矿是河南省首次发现与评价的一个特大型矿床。用透闪石－透辉石矿作陶瓷原料生产釉面砖，与同条件硅灰石质配方相比，具有烧成温度更低、产品性能更好、成本更低等优点。     

地面砖施工中存在的问题及处理方法

分析地面砖施工中容易出现的问题,提出相关的解决办法.     

福建外墙砖行业的现状与展望

本文简要介绍了福建外墙砖行业目前的发展现状,分析了其发展的影响因素与趋势,并对福建外墙砖行业的未来发展提出了几点建议。     

利用当地原料替代透辉石生产低温快烧内墙砖

介绍了利用当地原料完全替代透辉石等原料生产低温快烧内墙砖的工艺过程．列出了坯、釉配方及化学组成。     

Effects of porosity,dry unit weight,cement content and void/cement ratio on unconfined compressive strength of roof tile waste-silty soil mixtures

One of the conventional ways to improve the mechanical behavior of soils is to mix them with cementing agents such as cement, lime and fly ash. Recently, introduction to alternative materials or sub-products that can be adopted to improve the soil strength is of paramount importance. Therefore, the present study aims to investigate the effects of porosity (η), dry unit weight (γ_d) of molding, cement content (C) and porosity/volumetric cement content ratio (η/C_iv) or void/cement ratio on the unconfined compressive strength (q_u or UCS) of silty soil–roof tile waste (RT) mixtures. Soil samples are molded into four different dry unit weights (i.e. 13 kN/m³, 13.67 kN/m³, 14.33 kN/m³ and 15 kN/m³) using 3%, 6% and 9% cement and 5%, 15% and 30% RT. The results show that with the addition of cement, the strength of the RT–soil mixtures increases in a linear manner. On the other hand, the addition of RT decreases q_u of the samples at a constant percentage of cement, and the decrease in porosity can increase q_u. A dosage equation is derived from the experimental data using the porosity/volumetric cement content ratio (η/C_iv) where the control variables are the moisture content, crushed tile content, cement content and porosity.     

防水材料对厨卫间瓷砖饰面系统性能的影响研究

在厨卫间瓷砖饰面系统中,防水材料、粘贴材料和瓷砖的匹配性对系统的稳定性非常重要。在不同聚合物含量的水泥基防水浆料的基材上用不同粘贴材料铺贴不同吸水率的瓷砖,测试系统的粘结强度,结果表明,低聚合物含量的水泥基防水浆料和TTB瓷砖胶配套使用,系统的粘结力最佳,相容性更好,更适用于厨卫间。     

湘南传统建筑屋面瓦作营造工艺研究

本文探究湘南地区的传统屋面瓦作营造工艺。从技术角度研究传统民居屋面瓦作构造做法,主要以屋面坡度、屋面形式及铺设方式、屋脊构造、屋面曲线及屋面交接部位构造等五个方面分别进行阐述其相关的构件与构造做法及工艺特点。通过文献研究、实地调研、现场测绘及走访当地传统匠人,真实地记录传统建筑屋面瓦作技术构造方面的经验与手法,分析整理总结出湘南传统屋面瓦作营造工艺的特点。