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Prediction of Kappa Number in Eucalyptus Kraft Pulp Continuous Digester Using the box &Jenkins Methodology

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Advances in Chemical Engineering and Science 2014年第4期4卷 539-547页

作者： Flávio M. Correia José V. Hallak d’Angelo Roger J. Zemp Sueli A. Mingoti Chemical Engineering Faculty UNICAMP—University of Campinas Campinas Brazil Department of Statistic UFMG—Federal University of Minas Gerais Belo Horizonte Brazil

The quality of the resulting pulping continuous digesters is monitored by measuring the Kappa number, which is a reference of residual lignin. The control of the kappa number is carried out mainly in the top of the digester, therefore it is important to get some indication of this analysis beforehand. In this context, the aim of this work was to obtain a prediction model of the kappa number in advance to the laboratory results. This paper proposes a new approach using the box & Jenkins methodology to develop a dynamic model for predicting the kappa number from a Kamyr continuous digester from an eucalyptus Kraft pulp mill in Brazil. With a database of 1500 observations over a period of 30 days of operation, some ARMA models were studied, leading to the choice of ARMA (1, 2) as the best forecasting model. After fitting the model, we performed validation with a new set of data from 30 days of operation, achieving a model of 2.7% mean absolute percent error.

关键词： Continuous Digester Kappa Number Prediction Time Series box & Jenkins

Dynamics of Particle in a box in Time Varying Potential Due to Chirped Laser Pulse

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Journal of Modern Physics 2010年第6期1卷 372-378页

作者： Brijender Dahiya Vinod Prasad 不详

We describe a computational method for simulating the time dependent quantum mechanical system inter-acting with external field. In this method the Schr?dinger equation is solved by expanding the wave function in the basis set of unperturbed Hamiltonian. The expansion yields a set of coupled first order differential equation. For expansion coefficients, the coupled channel method is applied to a particle in a box interacting with external field in the form of chirped laser pulse. The pulse shape is taken as Gaussian. We study the ef-fect of different pulse parameters i.e. chirp rate, intensity, center frequency, box length and laser duration on the dynamics of the particle. Many interesting results are obtained and explained.

关键词： Transition Probability Chirp Rate box Length

Study　on　Automated　Assembly　Process　Planning　for　the　Spindle　box　of　NC　Lathe

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Journal of Southeast University(English Edition) 1996年第2期12卷 26-31页

作者：易红汤文成石均

This paper introduces a system of computer aided assembly process planning for spindle box of NC lathe. The method of describing assembly information and generating assembly process drawing is presented. The principle... 详细信息

关键词： assembly process planning spindle box NC lathe

Forkhead box protein A2 and T helper type 2-mediated pulmonary inflammation

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World Journal of Methodology 2015年第4期5卷 223-229页

作者： Ling Sun Xiao-Ju Tang Feng-Ming Luo Laboratory of Cardiovascular Diseases Research Center of Regeneration Medicine West China Hospital Sichuan University Department of Pulmonary Diseases West China Hospital Sichuan University Department of Family Medicine West China Hospital Sichuan University

The transcription factor forkhead box protein A2(FOXA2, also known as hepatocyte nuclear factor 3β or transcription factor 3β), has been found to play pivotal roles in multiple phases of mammalian life, from the early development to the organofaction, and subsequently in homeostasis and metabolism in the adult. In the embryonic development period, FOXA2 is require d for the formation of the primitive node and notochord, and its absence results in embryonic lethality. Moreover, FOXA2 plays an important role not only in lung development, but also in T helper type 2(Th2)-mediated pulmonary inflammation and goblet cell hyperplasia. In this article, the role of FOXA2 in lung development and Th2-mediated pulmonary inflammation, as well as in goblet cell hyperplasia, is reviewed. FOXA2 deletion in airway epithelium results into Th2-mediated pulmonary inflammation and goblet cell hyperplasia in developing lung. Leukotriene pathway and signal transducers and activators of transcription 6 pathway may mediate this inflammation through recruitment and activation of denditric cell during lung developments. FOXA2 is a potential treatment target for lung diseases with Th2 inflammation and goblet cell hyperplasia, such as asthma and chronic obstructive pulmonary disease.

关键词： Forkhead box protein A2 T helper type 2 inflammation Pulmonary Development Goblet cell hyperplasia

Movement Differential Equation of Seed Roller which Has Been Installed Stake Accelerator on the Roll box of Gin Machine

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Engineering（科研） 2018年第8期10卷 521-529页

作者： Sarimsakov Akramjon Muradov Rustam Umarov Akmal Kurbanov Dilmurat Namangan Institute of Engineering and Technology Namangan Uzbekistan

In the article stake accelerator has proposed on the side of the roll box in order to increase the productivity of the gin machine. The effect to the raw material of the proposed stakes was studied. Movement different... 详细信息

关键词： The Cotton Gin Seed Fiber Saw Gridiron Roll box Seed Roller Speed Quality Efficiency Productivity Equation Pressure Density Strength

Automatic Detection of Electric Meter Position in Automated Assembly Line Turnover box

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Journal of Electronic Research and Application 2019年第2期3卷 1-6页

作者： Qian Li Jian Wang Xiaotian Ma Yi Wang Yonglu Han Electric Power Research Institute of Hebei Electric Power CompanyShijiazhuangHebei 050021

In the process of metering and automatic production system in the measurement and verification of the loading robot,if there is a positional shift of the electric meter,the gripper of the loading robot will mechanically collide with the electric *** to the large force of the loading robot,the appearance of the electric meter is damaged,and the mechanical arm of the loading robot is broken,which reduces the service life of the measuring and verifying equipment,which is not conducive to the continuous and stable operation of the automatic verification *** this paper,an automatic detection system of electric meter position in the turnaround box is proposed,which can reduce the failure rate of the automatic verification system,improve the verification efficiency,reduce the loss of metering assets and the occurrence of safety accidents by realizing the offset detection and correction of the electric meter position in the turnover box.

关键词： turnover box position detection offset data acquisition

基于box Behnken响应面法优化口腔模拟环境IgY抑制牙龈卟啉单胞菌增殖

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微生物学通报 2017年第11期44卷 2689-2697页

作者：王芳周喻许啸晨包斌吴文惠上海海洋大学食品学院上海201306 上海美加净日化有限公司上海200333 上海水产品加工与贮藏工程技术研究中心上海201306 上海海洋大学海洋科学研究院上海201306

【目的】利用box Behnken响应面法研究免疫球蛋白Y(Ig Y)影响牙龈卟啉单胞菌(Porphyromonas gingivalis)的生长繁殖特性,发现口腔模拟环境中***的响应值与Ig Y剂量、初始***数量、培养时间的关系。【方法】以***最终的菌落数为评价指标... 详细信息

【目的】利用box Behnken响应面法研究免疫球蛋白Y(Ig Y)影响牙龈卟啉单胞菌(Porphyromonas gingivalis)的生长繁殖特性,发现口腔模拟环境中***的响应值与Ig Y剂量、初始***数量、培养时间的关系。【方法】以***最终的菌落数为评价指标,通过单因素试验研究培养时间、Ig Y剂量和初始***数量的最佳条件,再依据box Behnken中心组合原则设计三因素三水平响应面试验进行优化,评价Ig Y的抑制效果。优化得到的试验条件重复3次,以验证模型的准确性。【结果】单因素试验结果表明,以180 mmol/L的Ig Y剂量,2×10~6 CFU/m L的初始***数量,37°C厌氧培养4 h,口腔模拟环境Ig Y对***繁殖的影响达到最佳状态。通过Design Expert 8.0软件对回归方程的分析得到各因素最佳条件为:Ig Y剂量165 mmol/L、初始***数量2×10~6 CFU/m L、培养时间4.5 h。采用优化实验条件,重复3次试验,***最终菌落数是5.92×10~5 CFU/m L,与模型预测值5.85×10~5 CFU/m L相对误差1%,方差分析表明模型P值显著,缺失值P值不显著,理论值与实测值拟合良好。【结论】Ig Y能显著抑制牙龈卟啉单胞菌的增殖,优化后口腔模拟环境中的***最终菌落数显著降低,回归模型能够预测口腔模拟环境中***的增殖。

关键词：响应面法 box Behnken设计免疫球蛋白Y 牙龈卟啉单胞菌

A RESEARCH ON THE DISTRIBUTION OF SHUTTLES ON THE box LOOM

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苏州大学学报（工科版） 1991年第S1期16卷 3-12页

作者：杨明煜

The figure of shuttle distribution one side of the loom has been used to show the convel-sion of shuttle in picking *** characteristics of the figure have been analysed andused to introduce a simple method for shuttle... 详细信息

关键词： multiple box loom starting distribution of shuttle

The Saw Gin Stand with Adjustable Movement of the Roll box

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Engineering（科研） 2018年第8期10卷 486-494页

作者： Umarov Akmal Akhmedkhodzhaev Khamit Sarimsakov Akramjon Kenjaeva Muazzam Namangan Institute of Engineering and Technology Namangan Uzbekistan

The article contains information about saw gin used at cotton processing plants. The influence of the density of the seed roll, which is formed in the roll box of the saw gin, on the load of the saw cylinder drive and on the technological characteristics of the machine is considered. As a result of the research, in order to preserve the quality characteristics of fiber and seeds, the author proposes a gin stand with a system for regulating the position of the roll box.

关键词： Seed Cotton Ginning of Cotton Saw Gin Stand Roll box Seed Roll Load Current Sensor Controller