非化学法制浆造纸废水混凝处理方法研究

探讨了用化学混凝法处理非化学法制浆造纸废水的可行性。采用石灰乳、自制的混凝剂 ,联合 PAM絮凝处理该类造纸废水。试验结果表明 ,该方法处理效果好 ,工艺简单 ,易于操作管理 ,在沈阳某造纸厂的实际应用中取得很好的效果 ,具有推广价值。

用非化学法防治卷心菜害虫

用非化学方法防治卷心菜害虫已在全世界获得广泛地运用。归纳起来有四种主要方法。 (一)用人造薄膜覆盖卷心菜防治害虫。此法已在德国、瑞士、澳大利亚、丹麦等国广泛运用。瑞士一家公司生产有孔人造薄膜保护卷心菜不受菜蝇的危害,薄膜孔径为1.8×1.8毫米,使害虫不能通过膜孔在菜上产卵,防治效果为98—100％,而且薄膜可以多次使用。此外,用薄膜覆盖的田间土壤结构、温度和水份均得到明显的改善。

非化学法水处理在线自动监测仪通过认定

由蓝星水处理技术有限公司研制开发的一种在线自动监测仪，日前，通过了国家环保总局的环境保护产品认定。专家认为，这是中国水处理监测手段取得的新突破。

非化学法退漆技术

非化学法退漆技术飞机油漆的退除是一件头痛的事。这是因为为了满足航空公司减少维修费用的需要，油漆制造商研制了耐腐蚀、寿命长、与基体粘结强度高的油漆。例如，近十年在飞机上采用的新的聚氨酯、聚合物基或氟聚合物基油漆系统将油漆寿命提高了一倍，显著减少了维修费...

REFINED HYBRID MINDLIN PLATE ELEMENT FOR GEOMETRICALLY NON LINEAR ANALYSIS

Based upon a generalized variational principle, which relaxed the inter element continuity requirements, a novel refined hybrid Mindlin plate element is developed, its non linear element stiffness matrices are decomposed into a series of matrices with respect to the assumed strain modes. The formulation presented in this paper is different from any other non linear mixed/hybrid element formulation all successful experience of linear hybrid formulation is absorbed into the formulation(adding non conforming modes and realizing orthogonalization) Numerical results show that the present approach is more effective than any other non linear hybrid element formulation over the accuracy and computational efficiency. In addition, non conforming modes can also overcome the shear locking effect.

Systemic chemotherapy for hepatocellular carcinoma in non-cirrhotic liver:A retrospective study

AIM:To investigate the efficacy and toxicity of systemic chemotherapy in a retrospective study of patients with hepatocellular carcinoma(HCC)occurring in normal or fibrotic liver without cirrhosis. METHODS:Twenty-four patients with metastatic or locally advanced HCC in a normal or a fibrotic liver were given systemic chemotherapy(epirubicin,cis- platin and 5-fluorouracil or epirubicin,cisplatin and capecitabine regimens).Tumor response,time to pro- gression,survival,and toxicity were evaluated. RESULTS:There were 7 women and 17 men,mean age 54±10 years;18 patients had a normal liver and 6 had a fibrotic liver(F1/F2 on biopsy).Mean tumor size was 14 cm,5 patients had portal vein thrombosis and 7 had metastasis.Patients received a median of 4 chemotherapy sessions.Overall tolerance was good. There were 5 partial responses(objective response rate =22%),and tumor control rate was 52%.Second line surgical resection was possible in two patients.Median survival was 11 mo,and 1-and 2-year overall survival rates were 50%±10%and 32%±11%,respectively. CONCLUSION:In patients with HCC in a non-cirrhotic liver,chemotherapy was well tolerated and associated with an objective response rate of 22%,including two patients who underwent secondary surgical resection.

Kinetic mechanism of magnesium production by silicothermic reduction of CaO·MgO in vacuum

The investigation of silicothermic reduction of CaO·MgO was carried out using a self-developed thermogravimetric analysis(TGA)instrument under vacuum and high temperature conditions.The TG data of pellets prepared with calcined dolomite,ferrosilicon and fluorite were determined at the heating rates of 1.5,2.0,2.5 and 3.0℃/min in 5 Pa vacuum at 300−1400℃,respectively.Model-free analysis and model-based analysis were applied for simulating the kinetic mechanism.By analyzing the characteristics of the initial and final reaction temperatures of TG curve,ratio of half-width of derivative TG curve and kinetic parameters,a conclusion was made that the most probable mechanism function is the first order formal chemical reaction with activation energy of 233.42 kJ/mol and pre-exponential factor of 5.14×1010 s−1.This study provides the basic data of dynamics of silicothermic magnesium production under vacuum conditions.

Clinicopathological Significance of E-cadherin and PCNA Expression in Hunman Non-small Cell Lung Cancer

OBJECTIVE This study was designed to assess E-cadherin (E-cad)and proliferating cell nuclear antigen(PCNA)expression as well as their clinicopathological significance in hunman non- small cell lung cancers(NSCLCs).Possible molecular mechanisms of differentiation and metastasis of NSCLCs are discussed. METHODS Immunohistochemical and immunofluorescence double staining were performed to examine the expression of E-cad and PCNA in 68 primary NSCLCs cases. RESULTS The E-cad expression in squamous cell carcinomas and adenocarcinomas showed no significant difference.E-cad expression had a positive correlation with the histological- differentiated grade.A significant difference of E-cad expression was found between metastatic and non-metastatic groups.PCNA expression in squamous cell carcinomas and adenocarcinomas showed no significant difference.The PCNA expression had a reverse correlation with the histological-differentiated grade.A significant difference of PCNA expression was found between metastatic and non-metastatic groups.The E-cad and PCNA expression presented a reverse correlation. CONCLUSION E-cad expression is not associated with the histological type of NSCLC,but is associated with differentiation and metastasis of the cancer.Down-regulation of E-cad expression affects the proliferation of cancer cells.Conjoint analysis of E-cad and PCNA expression is a good way to evaluate tumor biological behavior.

Global Optimization Algorithm for Nonlinear Sum of Ratios Problems

In this paper, a global optimization algorithm is proposed for nonlinear sum of ratios problem （P）. The algorithm works by globally solving problem （P1） that is equivalent to problem （P）, by utilizing linearization technique a linear relaxation programming of the （P1） is then obtained. The proposed algorithm is convergent to the global minimum of （P1） through the successive refinement of linear relaxation of the feasible region of objective function and solutions of a series of linear relaxation programming. Numerical results indicate that the proposed algorithm is feasible and can be used to globally solve nonlinear sum of ratios problems （P）.

Observation of the Curative Effect of Mabthera in Combination with the CHOP Regimen in Treating Invasive B-Cell Lymphoma:A Report of 45 Cases

OBJECTIVE To observe the clinical efficacy and toxic effects of Mabthera （rituximab） in combination with the CHOP （R-CHOP） regimen for treating invasive B-cell non-Hodgkin＇s lymphoma. METHODS A total of 45 patients with CD20 positive B-cell non- Hodgkin＇s lymphoma were randomly divided into the R-CHOP （22 cases） and CHOP groups （23 cases for controls）. They received the regimens of Mabthera in combination with CHOP or single CHOP therapy respectively. An appraisement of the curative effect could only be performed following 4 cycles of chemotherapy for the 45 patients. Follow-up was conducted to observe the conditions of survival. RESULTS The rate of complete remission （CR） in the R-CHOP group was 68.2%, with a total effective rate of 81.8%, and in the CHOP group these rates were 34.8% and 78.3% respectively. There was a significant difference in comparing the CR rates between the two groups （P 〈 0.05）. The 1, 2 and 3-year overall survival （OS） rates of the RCHOP group were 90.9%, 81.8% and 77.3%, respectively. In the CHOP group, the OS rates were respectively 91.3%, 69.5% and 47.8%. The difference in the 3-year OS between the two groups was significant （P 〈 0.05）. The toxic effects of the two groups were mainly a slight and moderate bone marrow depression and a gastrointesinal reaction, with similar tolerable toxic effects in the two groups （P 〉 0.05）. Adverse effects related to the Mabthera infusions occurred in 6 cases of the R-CHOP group （27.2%）. These effects lessened after symptomatic treatment. CONCLUSION The therapeutic regimen of Mabthera, in combination with CHOP （R-CHOP） has an obvious curative effect for treating invasive B-cell non-Hodgkin＇s lymphoma, with a favorable tolerance. It is highly recommended as the treatment of choice.

Effects of weekly dose docetaxel monotherapy schedule for elderly patients with non-small cell lung cancer

Objective： To investigate the clinical efficacy and toxicity of weekly dose docetaxel monotherapy schedule in elderly with advanced non-small cell lung cancer （NSCLC）. Methods： 28 patients aged over 65 with advanced NSCLC were received with docetaxel （Aisu） 35 mg/m^2 on days 1, 8 and 15 every 28 days. A clinical evaluation on effectiveness, quality of life and toxicities was performed. Results： 28 patients were given 86 cycles＇ chemotherapy altogether. The overall response rate was 35.7% （10/28）. The clinical beneficial rate was 64.3% （18/28）. Mean KPS was increased from 75.5 at baseline to 87.7 after chemotherapy （P 〈 0.01）; lung cancer symptom scale （LCSS） scores of cough, hemoptysis, chest pain and dyspnea were increased from 64, 65, 62 and 65 to 90, 92, 87 and 88, respectively （P 〈 0.01）. The median time to progression （TTP） was 5.3 months; median survival time （MST） was 8.5 months. The main toxicities were fatigue, leukopenia and decrease of hemoglobin with well tolerance. Conclusion： Weekly dose docetaxel monotherapy schedule is a feasible, well-tolerated, and active scheme in the treatment of the elderly patients with advanced NSCLC.

An Unstructured Finite Volume Method for Impact Dynamics of a Thin Plate

The examination of an unstructured finite volume method for structural dynamics is assessed for simulations of systematic impact dynamics. A robust display dual-time stepping method is utilized to obtain time accurate solutions. The study of impact dynamics is a complex problem that should consider strength models and state equations to describe the mechanical behavior of materials. The current method has several features, l） Discrete equations of unstructured finite volume method naturally follow the conservation law. 2） Display dual-time stepping method is suitable for the analysis of impact dynamic problems of time accurate solutions. 3） The method did not produce grid distortion when large deformation appeared. The method is validated by the problem of impact dynamics of an elastic plate with initial conditions and material properties. The results validate the finite element numerical data

A Linearization Approach for Rational Nonlinear Models in Mathematical Physics

In this paper, a novel method for linearization of rational second order nonlinear models is discussed. In particular, we discuss an application of the 5 expansion method （created to deal with problems in Quantum Field Theory） which will enable both the linearization and perturbation expansion of such equations. Such a method allows for one to quickly obtain the order zero perturbation theory in terms of certain special functions which are governed by linear equations. Higher order perturbation theories can then be obtained in terms of such special functions. One benefit to such a method is that it may be applied even to models without small physical parameters, as the perturbation is given in terms of the degree of nonlinearity, rather than any physical parameter. As an application, we discuss a method of linearizing the six Painlev~ equations by an application of the method. In addition to highlighting the benefits of the method, we discuss certain shortcomings of the method.

Regularization Method and Immune Genetic Algorithm for Inverse Problems of Ship Maneuvering

Ship maneuverability, in the field of ship engineering, is often predicted by maneuvering motion group （MMG） mathematical model. Then it is necessary to determine hydrodynamic coefficients and interaction force coefficients of the model. Based on the data of free running model test, the problem for obtaining these coefficients is called inverse one. For the inverse problem, ill-posedness is inherent, nonlinearity and great computation happen, and the computation is also insensitive, unstable and time-consuming. In the paper, a regularization method is introduced to solve ill-posed problem and genetic algorithm is used for nonlinear motion of ship maneuvering. In addition, the immunity is applied to solve the prematurity, to promote the global searching ability and to increase the converging speed. The combination of regularization method and immune genetic algorithm（RIGA） applied in MMG mathematical model, showed rapid converging speed and good stability.