分步絮凝沉淀—藻类法处理高浓度有机污水的初步研究

高浓度有机污水的净化，目前尚无完善有效的措施，应用：分步絮凝沉淀－藻类法的治理工艺，ＮＥＳ型絮凝剂和螺旋藻的特性，将它们结合起来，处理ＣＯＤ３００００ｍｇ／Ｌ（铬法），ＮＨ３－Ｎ１２０００ｍｇ／ｌ，Ｃｕ６０ｍｇ／ｌ左右的污水，其累计总去除率达９７．７％以上，这为高浓度有机污水的进一步处理提供了又一条新途径。     

直接燃烧法治理硫化物恶臭污水的研究

在酸性条件下，用水气将恶臭物质由污水中载出，送入石油气和空气火焰中燃烧。用ＮａＯＨ溶液吸收废气中的ＳＯ２和ＣＯ２。污水经上述处理后，加入适量ＮａＣｌＯ溶液，将其残存的恶臭物质完全氧化。     

三氯化磷法合成O-(1,2,2,2-四氯乙基)硫代磷酰二氯的工艺研究

研究了以三氯化磷、一氯化硫为原料合成Ｏ （１，２，２，２ 四氯乙基）硫代磷酰二氯的工艺，讨论了温度、催化剂、反应时间、原料摩尔比等对反应的影响，获得了较好的工艺条件为：原料摩尔配比ＰＣｌ３∶Ｓ２Ｃｌ２∶ＣＣｌ３ＣＨＯ∶催化剂Ｂ＝３１∶２∶１∶０７５；反应温度－８～－４℃；反应时间９ｈ；收率达６６５３％。     

直接法合成甲基（氢）二氯硅烷新工艺研究

本文通过催化作用原理研究，提出了以Ｓｉ、ＣＨ３Ｃｌ为原料?直接法合成ＣＨ３ＳｉＨＣｌ２的新工艺。采用ＣｕＣｌ－Ｎｉ－Ｚｎ催化体系不但能使ＣＨ３Ｃｌ适量分解产物ＨＣｌ与Ｓｉ、ＣＨ３Ｃｌ反应并有效地转化为目的产物ＣＨ３ＳｉＨＣｌ２，由小试和φ４００ｍｍ流化床中试所得的混合单体中，ＣＨ３ＳｉＨＣｌ２含量〉１５％，（ＣＨ３）２ＳｉＣｌ２〉５０％，为工业化生产有机硅含氢单体开辟了新的途径。     

接触氧化——表面曝气两段法处理染料中间体废水

对河南化工厂采用接触氧化和表面曝气两段串联工艺处理染料中间体化学污水装置进行了分析、总结。该工艺具有容积负荷高、耐冲击负荷能力强、便于管理等优点，ＣＯＤ去除率达８５％，ＢＯＤ去除率达９７％，酚钠和硝基去除率均在９５％以上，出水水质符合ＧＢ８９７８－８８综合污水排放标准。     

难降解高浓度有机废水催化湿式氧化净化技术 Ⅱ 反应工艺条件的研究

通过对反应温度、压力、液体空速、空气／水比及原水ｐＨ值诸工艺条件的考察，确定催化湿式氧化处理含氨和高ＣＯＤ值的焦化污水的最佳工艺条件为２７０℃，９．０ＭＰａ，空气／水（体）＝２１０∶１，原水ｐＨ＝９．８，液体空速＝２．０ｈ－１。在该条件下所研制的催化剂对ＣＯＤＣｒ及ＮＨ３－Ｎ的去除率分别达到９９．６％，经处理的焦化污水水质优于国家环保排放标准的要求。     

铝炭锆质浸入式吹气水口的研制与使用

针对水口堵塞问题，以电熔刚玉、鳞片石墨、部分稳定的氧化锆为主要原料，采用等静压二次成型工艺，研制成功了吹气水口。该水口由Ａｌ２Ｏ３－Ｃ质本体、Ａｌ２Ｏ３－Ｃ－ＳｉＣ质内孔体、ＺｒＯ２－Ｃ质渣线环组成。现场使用表明，通过吹氩气洗工艺，该水口可防止堵塞，使用寿命提高一倍。     

活性炭—二氧化氯法处理含酚饮用水的研究

本文采用活性炭－二氧化氯法,结合实例对含酚饮用水作了除酚研究,实验结果和工艺计算表明,活性炭和ＣｌＯ２均具有很好的除酚能力。Ｃ－ＣｌＯ２法比活性炭和ＣｌＯ２单独除酚具有投资少,成本低和水质高等优点,是处理含酚饮用水的一种较为理想的方法。     

技术市场

·技术市场·ＡＳＢＲ工艺污水处理技术项目简介本工艺为生物化学工艺，适用于各种有机性废水处理。原废水先经酸化预处理，再入ＳＢＲ生化反应池处理，即可达标排放或回用。排泥周期大于１５０天。原水ＣＯＤ１０００～２０００ｍｇ／ｌ，处理水ＣＯＤ小于或等于１００ｍ...     

BPP生产中含酚废水的处理

研究了用活性炭吸附法处理ＢＰＰ生产中的含酚废水,讨论了不同的活性炭,ＰＨ值等对吸附性能的影响。结果表明,该工艺处理效果好,处理后的放心水无色透明,ＣＯＤＣＲ、挥发酚、ＰＨ均达国家污水综合排放标准。     

1例新生儿血小板减少性紫癜的免疫抗体分析

目的分析1例新生儿血小板减少性紫癜(NAIT)血清中免疫抗体的特异性。方法采用固相凝集法检测患儿及其母亲血清中是否存在抗父亲/抗丈夫血小板抗体,用PAK12试剂盒鉴定血清中的抗体是抗-HLA还是抗-HPA,用ELISA法(PRA)鉴定HLA抗体的特异性,用SSOP法进行父亲、母亲和患儿HLA-Ⅰ类基因分型,用PCR-SSP法进行父亲、母亲和患儿HPA抗原1-5系统基因分型。结果该例NAIT患儿血清中存在来自母体的HLA-Ⅰ类抗体和HPA抗体;HLA-Ⅰ类抗体为抗-Bw6;父亲和患儿的HLA-B位点的宽特异性均为Bw4,Bw6,母亲为Bw4;患儿HPA抗原1-5系统基因型与父亲相同,有3a,母亲没有3a。结论在对NAIT患儿进行实验室诊断时,除注意HPA抗体的作用外,也应重视HLA-Ⅰ类抗体的作用。     

Anti- and Prooxidant Properties of Carotenoids

Carotenoids can be effective singlet oxygen quenchers and inhibit free-radical induced lipid peroxidation. A remarkable property of β-carotene ( 1a ) is the change from an antioxidant to a prooxidant depending on oxygen pressure and concentration. In the present study a considerable number of carotenoids ( 1a , 2c , 2d , 2e , 3a , 4a , 5a , 6a , 7a , 8a , 8h , 8i , 8j , 9f , 10a , 11a , 12g ) was investigated using two independent approaches: 1. Comparison of their effects on inhibition of the free-radical oxidation of methyl linoleate, and 2. The direct study of the effect of oxygen partial pressure upon their rates of oxidation. It is shown that some carotenoids ( 7a , 8a ) are even more effective than the well-known compounds β-carotene ( 1a ) and astaxanthin ( 5a ) and are powerful antioxidants without any prooxidative property. Different carotenoids display different behaviour depending on chain length and end groups. The influence of these functional groups on the antioxidative reactivity is discussed.     

Fireclay mortar with a casting binder as a plasticizing additive

A composition of a fireclay mortar with a casting binder as a plasticizing additive is described. Results of a study of the properties of a mortar of grade MSh39 with a composite plasticizing agent (soda ash+LST) and a casting binder are presented. It is established that use of a casting binder in the composition of a fireclay mortar increases the adhesion between the mortar and the refractory, decreases the thickness of the joint, and simplifies the production process of the mortar. Translated from Ogneupory i Tekhnicheskaya Keramika, No. 2, pp. 35–36, February, 1998.     

聚丙烯复合膜用的EVA乳液胶粘剂的研究

本文研究了聚丙烯复合膜用的EVA乳液和丁基橡胶组成的胶粘剂的配方及工艺。实验结果表明:本研究的胶粘剂的粘结力达到甚至超过聚丙烯薄膜的扯断强度。     

The flow and displacement in porous media of fluids with yield stress

We study the mobilization and subsequent flow in a porous medium of a fluid with a yield stress, modeled as a Bingham plastic. We use single-capillary expressions for the mobilization and flow in a pore-throat, and a pore-network model that accounts for distributed yield-stress thresholds. First, we extend the statistical physics method of invasion percolation with memory, which models lattice problems with thresholds, to incorporate dynamic effects due to the viscous friction following the onset of mobilization. Macroscopic relations between the applied pressure gradient and the flow rate for single-phase flow are proposed as a function of the pore-network microstructure and the configuration of the flowing phase. Then, the algorithm is applied to model the displacement of a Bingham plastic by a Newtonian fluid in a porous medium. The results find application to a number of industrial processes including the recovery of oil from oil reservoirs and the flow of foam in porous media.     

Drag on two co-axial rigid spheres moving normal to a plane: Newtonian and Carreau fluids

The boundary effect and the presence of a nearby entity on the drag of a rigid entity is investigated by considering the movement of two identical, rigid, coaxial spheres normal to a plane in both a Newtonian and a Carreau fluid at a low to medium large Reynolds number. The parameters key to the phenomenon under consideration, including the nature of the fluid, the separation distance between two spheres, the distance between the near sphere and the plane, and the Reynolds number, on the drag coefficient are discussed. We show that the influence of a boundary on the drag coefficient is more important than that of the nature of a fluid and that of the separation distance between two spheres. The variation of the drag coefficient as a function of Reynolds number for a Carreau fluid is similar to that for a Newtonian fluid. Due to the shear-thinning nature of the former the drag coefficient in the former is smaller than that in the latter. The influence of the index parameter of a Carreau fluid becomes appreciable only if the Carreau number is sufficiently large. Correlations between the drag coefficient and the key parameters of a system are developed for the case when the Reynolds number is smaller than l.     

Generalized Orowan-Petch Plot for Brittle Fracture

The fracture of brittle solids is considered to be based on a defect configuration consisting of a stress concentrator, in our case a hemispherical pore, and a starter crack, in our case either a semicircular crack, a circular crack, or a circumferential crack. Computation of the stress field, application of the relevant weight functions, and an averaging scheme based on the assumption of a virtual crack increment provides stress intensity factors for all defect configurations considered. A normalization scheme yields a generalized version of the Orowan-Petch plot in the form of a normalized strength to normalized defect size relationship.     

A next-generation wide color gamut WLED with improved spectral performance in phosphor composite functional solid

As is well known, a way to obtain a high color resolution and saturation of a liquid crystal display and thereby obtain a higher visual accuracy and comfort in the coming 5G era remains an urgent challenge. In the present study, a new type of phosphor composite material doped with Ln³⁺ ions provides a promising alternative to the color filters used in White light-emitting diodes (WLEDs), achieving a better performance regarding the realization of a wider color gamut. The advantages of this composite material are illustrated through an abundant phase and morphology analysis along with a discussion regarding the X-ray photoelectron spectroscopy of the valence bond of Ce ions, which maintain the luminescence properties of the phosphor while providing a stable and solid amorphous environment. An improved spectral performance was obtained through color filtering at 580 nm along with the regulating effects of red, green, and blue emissions according to the doped Ln³⁺ ions. Notably, we fabricated a high-performance WLED based on a Ln³⁺-doped PiG with a correlated color temperature of 5037 K, color rendering index of 72.8, and high color gamut of 91.97%, providing a new choice for the development of luminescence materials with a high color resolution and saturation.     

High-order approximations for unsteady-state diffusion and reaction in slab, cylinder and sphere catalyst

High-order approximations for unsteady-state diffusion, a linear adsorption and a first-order reaction in a slab, cylinder and sphere catalyst are developed. The approximations are based on a first-, a second-, a third- and a fifth-order approximation of the Laplace domain solutions of the exact model for the catalyst of three geometries. The coefficients in the approximations are functions of Thiele modulus of the respective geometry and easy to determine. The accuracy of the approximation is shown to increase markedly with the approximation order.     

Lipoprotein(a): Nonhuman primate models

Lipoprotein(a) [Lp(a)] is a low density lipoprotein which has apo(a) disulfide-linked to apoB100. Apo(a) has recently been shown to have a striking homology with plasminogen, a knowledge that has stimulated a lot of interest in the mechanism of atherogenicity and thrombogenicity of this lipoprotein particle. Several studies have documented the presence of Lp(a) in nonhuman primates with particular reference to the rhesus monkeys and baboons. The Lp(a) of rhesus monkey is structurally very similar to that of humans, except for the absence of kringle V and the amino acid composition of the catalytic region. The Lp(a) of nonhuman primates, like their human counterparts, exhibit a wide range of interindividual plasma levels and also a wide size polymorphism of apo(a). Nonhuman primates appear to represent a good model for the study of the structure and biology of Lp(a).