氧化钴原料中主含量的测定

采用以盐酸溶样制备试液 ,孔雀石绿为衬托 ,二甲酚橙为指示剂的EDTA容量法测定氧化钴主含量。此方法与其它方法相比具有终点易判断、变色敏锐、快速、准确度及精密度高等优点     

Liver Injury-preventive Effect of Tea Theanine in Rats

This study was conducted to isolate the constituent, which had a preventive effect on D-galactosamine-induced rat liver injury, from the 70% ethanol-soluble fraction of Japanese green tea. Theanine (glutamic acid γ-ethylamide) was identified as the active compound, and the liver injury-preventive effect of theanine was dose-dependent. L-Glutamic acid γ-ethyl ester, but not glutamine, also brought about a significantly preventive effect on liver injury when added to the diet at equimolar levels to that of 1% theanine. The results indicate that theanine is one of the effective constituents of Japanese green tea in preventing D-galactosamine-induced liver injury.     

活性石灰前期试验和参数准备

通过大量的试验，采用科学、严密的方法，得出了对长钢活性石灰设计将来的生产有价值的参考数据，同时对长钢企业现有的石灰生产也具有一定的指导意义。     

Equilibrium moisture content, BET monolayer moisture and crispness of extruded rice-legume snacks

Extruded Jaya rice-legume (3:1 w/w) snacks equilibrated at different relative humidities (RH; 10–86%) exhibited similar typical sorption-isotherms and equilibrium moisture contents (EMC) up to 33% RH. Acceptable crispness was lost above 43% equilibrium relative humidity (ERH) and about 110N breaking strength. The values for the BET monolayer moisture content of various products were almost identical to their initial moisture content, indicating the adequacy of the processing conditions for snacks of satisfactory shelf-life if packed immediately in moisture-impermeable packets.     

Synthesis and catalytic performance of gold-loaded TiO2 nanofibers

Organic modification of sol–gel catalytic glassy electrodes made of a thin layer of organosilica doped with nitroxyl radical TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) crucially enhances stability in the waste-free oxidation of alcohols to carbonyls in water. Structural comparison between analogous films made of organosilica and unmodified SiO₂ shows that the origin of the pronounced stable activity of the ORMOSIL film lies in high hydrophobic and also in the pronounced low degree of hydrophilicity. This article is dedicated to the memory of professor Angelo Patricolo, great Italian neurosurgerist and fine gentleman from Sicily     

被动式太阳能温室-采暖房中对流传热的数值分析

针对一种被动式太阳能温室-采暖房，分析采暖房北墙采用或不采用隔热保温措施时，温室-采暖房内的温度和气流分布情况，模拟具有蓄热层的太阳能温室-采暖房中的对流传热，研究温室-采暖房中采用岩石床吸收和贮存太阳能的传输特性。     

An efficient and universal solar interfacial photothermal reactor toward liquid phase oxidation

Photothermal catalysis has attracted great attention owing to high solar energy utilization efficiency, and great progress has been achieved in gas-phase catalysis. However, photothermal catalysis in liquid-phase shows a limited performance, due to high specific heat capacity of liquid. Herein, an interfacial photothermal catalytic (IPC) strategy applying an IPC leaf was designed for liquid-phase catalysis using benzyl alcohol oxidation as the model reaction. On even ground, the benzaldehyde generation rate (8.7 mmol g_cat⁻¹ h⁻¹) of the IPC system with Ce-doped MnO₂ as photothermal catalyst was almost 4.8 times and 3 times of bulk photothermal catalysis and the relative bulk thermal catalysis. Experimental results proved that this excellent catalytic performance could be attributed to both the high temperature achieved and the enhanced lattice oxygen activity by solar irradiation. This IPC system also exhibited good universality and long-term durability. Our work innovatively created a green strategy to obtain fine chemicals with only solar irradiation.     

有氧再生废轮胎橡胶粉的制备与表征

在管式炉中对废轮胎橡胶粉进行了有氧再生,并考察了气氛、再生温度和再生时间对废轮胎橡胶粉有氧再生过程的影响。结果表明,有氧条件下橡胶粉的质量损失和溶胶质量分数均随温度升高而增大,溶胶中合成胶分子链之间易发生二次重组再交联反应,天然橡胶分子链则主要发生断裂。240 ℃下橡胶粉在有氧条件下再生10 min时,溶胶质量分数达55.9%。橡胶主链和交联键断裂主要发生了氧化反应,生成含羰基和亚砜基的化合物,同时伴有水和二氧化碳等生成,说明橡胶粉中的橡胶分子链有效断链。     

Mathematical Modeling of Heat and Mass Transfer during Convective Dehydration of an Anisotropic Cylindrical Foodstuff

Two‐dimensional, unsteady‐state mass transfer was studied for air drying of an anisotropic finite cylindrical body. A mathematical model was developed for predicting the temperature of the drying sample at any time and moisture in any position in the drying sample at any time. The anisotropic nature of the drying material was considered in the mathematical model by taking into account the different moisture diffusivities in the axial and radial directions. A cut fresh green bean was used as an anisotropic material and a pilot‐scaled dryer was set up to investigate the drying behavior of this foodstuff. Several length‐to‐diameter ratios of fresh green beans were considered and the mathematical model was validated by comparison of the predicted values of average moisture content with the experimental data. The model was used to predict the moisture distributions inside the drying samples. Different moisture content distributions in the axial and radial directions during drying confirms the anisotropic nature of cut green bean samples. © 2013 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley Online Library ( wileyonlinelibrary.com/journal/htj ). DOI 10.1002/htj.21119     

21世纪锅炉水处理发展战略研究

从可持续发展战略考虑,分析了锅炉水处理的现状、特点、存在问题,与发达国家之间的差距以及传统的安全和节能战略的局限性,建议把对环境友好、对人身安全的绿色锅炉水处理技术作为２１世纪锅炉水处理发展的中心战略。