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Temperature correction for Thickness Measurements of Hot Rolled steel Plates

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Journal of Iron and steel Research International 2010年第12期17卷 23-29页

作者： c Gheorghies s condurache-Bota Faculty of sciences Dunarea de Jos University

Measuring the thickness of steel plates during the hot rolling process Is crucial tor getnng me necessary feedback to obtain the desired values at room temperature. The dilatation and the phase transformations of steel occur during heating and subsequent cooling and rolling strongly influences the results of thickness measurements. The radiometrie method provides the necessary means for making real-time and fully automatized measurements of steel thickness during rolling, if only the temperature correction is precisely known and taken into consideration. This article proves that the experimental results concerning the relative variation of steel thickness and corresponding massthickness variation can be correctly explained by means of the theory of metal dilatation correlated with the theory of nuclear radiation absorption when passing through a metal or metallic alloy, such as steel.

关键词： hot rolling dilatation phase transformation temperature correction attenuation

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基于3s技术的县级土地利用动态监测技术

山地学报 2000年第1期18卷 26-30页

作者：王晓栋清华大学建筑学院!北京100084

阐述了建立地区Rs判别模型的思想 ,讨论了GPs的工作方式和数据采集方法 ,总结了GIs平台选择和本底数据库质量判定的依据 ,提出了一种多时态地理信息系统数据模型 :修正组合体模型

关键词： 3s技术土地利用动态监测

sources and Deficiency Diseases of Mineral Nutrients in Human Health and Nutrition:A Review

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Pedosphere 2014年第1期24卷 13-38页

作者： U.c.GUPTA s.c.GUPTA Agriculture and Agri-canada canada Crops and Livestock Research Centre The Department of Plastic surgery Loma Linda University

Mineral nutrients are fundamentally metals and other inorganic compounds. The life cycle of these mineral nutrients begins in soil, their primary source. soil provides minerals to plants and through the plants the minerals go to animals and humans; animal products are also the source of mineral nutrients for humans. Plant foods contain almost all of the mineral nutrients established as essential for human nutrition. They provide much of our skeletal structure, e.g., bones and teeth. They are critical to countless body processes by serving as essential co-factors for a number of enzymes. Humans can not utilize most foods without critical minerals and enzymes responsible for digestion and absorption. Though mineral nutrients are essential nutrients, the body requires them in small, precise amounts. We require them in the form found in crops and they can be classified into three different categories： major, secondary, and micro or trace minerals. This classification is based upon their requirement rather than on their relative importance. Major minerals such as potassium （K） and phosphorus （P） are required in amounts of up to 10 g d-1. The daily requirement of secondary and micro minerals ranges from 400 to 1 500 mg d-1 and 45 ~tg d-1 to 11 mg d-1, respectively. To protect humans from mineral nutrient deficiencies, the key is to consume a variety of foods in modest quantities, such as different whole grains, low fat dairy, and different meats, vegetables and fruits. For insurance purposes, a supplement containing various mineral nutrients can be taken daily.

关键词： deficiency diseases deficiency symptoms origin recommended daily dose toxicity

Physicochemical and microbiological effects of biosurfactant on the remediation of HOc-contaminated soil

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Progress in Natural science:Materials International 2005年第7期15卷 577-585页

作者： ZENG Guangming , ZHONG Hua, HUANG Guohe and FU Haiyan ( Department of Environmental science and Engineering, Hunan University, changsha 410082, china Faculty of Engineering, University of Regina, Regina, saskatoon s4s0A2, canada) Department of Environmental science and Engineering Hunan University Changsha 410082 China Faculty of Engineering University of Regina Regina Saskatoon S4SOA2 Canada

Remediation of soil contaminated by hydrophobia organic compounds using biosurfactants as additives involves interactions between soil matrix, hydrophobic organic compound contaminants, biosurfactants and microorganisms. In this paper, the mechanism for biosurfactants to enhance the contaminant degradation is basically revealed. Biosurfactants can enhance solubilization of the contaminants in the soil matrix, change their mass transfer properties into the aqueous phase, as well as affect their sorption properties. Furthermore, biosurfactants can act on microorganisms and change their surface properties, accordingly cause new growth and uptake behavior of the bacteria in the soil matrix. Both the physicochemical and the microbiological effects can basically increase the bioavailability of the contaminants and enhance their degradation.

关键词： bioavailability physicochemical effects microbiological effect hydropbobic organic compounds biosurfactants.

Fecal microbiota transplantation in allergic diseases

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World Journal of Methodology 2025年第2期15卷 83-91页

作者： Ece TüsüzÖnata ÖnerÖzdemir Division of Pediatric Allergy and Immunology Medical FacultySakarya UniversityAdapazarı54100SakaryaTürkiye

Microorganisms such as bacteria,fungi,viruses,parasites living in the human intestine constitute the human intestinal *** refers to composi-tional and quantitative changes that negatively affect healthy gut *** recent years,with the demonstration that many diseases are associated with dysbiosis,treatment strategies targeting the correction of dysbiosis in the treat-ment of these diseases have begun to be *** microbiota trans-plantation(FMT)is the process of transferring faeces from a healthy donor to another recipient in order to restore the gut microbiota and provide a therapeutic *** studies have gained popularity after probiotic,prebiotic,symbiotic studies in the treatment of dysbiosis and related *** has emerged as a potential new therapy in the treatment of allergic diseases as it is associated with the maintenance of intestinal microbiota and immunological balance(T helper 1/T helper 2 cells)and thus suppression of allergic *** this article,the definition,application,safety and use of FMT in allergic diseases will be discussed with current data.

关键词： Microbiota Dysbiosis Faecal microbiota transplantation Allergic diseases

sIMULATION OF LARGE TURBINE ROTOR's HEAT TREATMENT PROcEss

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Acta Metallurgica sinica(English Letters) 2005年第6期18卷 768-772页

作者： c. Jiang Y.B. chen B.s. Wu Q.L. Jin Beijing Research Institute of Mechanical and Electrical Technology Beijing 100083 China

Temperature field numerical simulation about he heat treatment process curve of large turbine rotor is presented. With simulation software Deform3D in according to the heat treatment processing of china First Heavy Machinery, the details of temperature change at the different location of the rotor is to be found. Once knowing the temperature field change, the duplex grain defect long time existed in large forgings can be solved with a quantitative analysis instead of only the qualitative one. Precondition for small metal samples is brought to simulate microstructare and grain size change of large rotor according to the numerical simulation result. Also, consistent feature with real manufacture is showed from the physical experiment, so that the simulation can be used to not only improve the products process but also prevent wasting unnecessary energy and shorten process periods. The rotor quality is controlled thoroughly with plenty of experiments data.

关键词： temperature field numerical simulation grain size

Inverse methodology as applied to reconstruct local textile features from measured pressure field

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Journal of Materials science & Technology 2021年第12期71卷 241-247页

作者： s.Bancora c.Binetruy s.Advani comas-cardona Ecole centrale de Nantes Research Institute in Civil Engineering and Mechanics(GeM)UMR CNRS 618344321 Nantes Cedex 3France Department of Mechanical Engineering University of DelawareNewarkDelaware 19716USA

One can compute the final deformation of a known geometry under specific boundary conditions using the constitutive laws of mechanics that describe their stress strain *** such cases the initial geometry is known,and all operators mapping the deformation are defined on the reference ***,there are situations in which the final configuration of a deformation might be known but not the *** inverse formulation allows one to determine the initial geometry of a domain,given its final deformation state,the material behavior law and a set of boundary *** the present work we propose a method to reconstruct the mesoscale geometry of a textile based on its mechanical response during *** do so,stress boundary conditions are acquired by means of a pressuresensitive *** adopting an appropriate material law,the thickness and width information of the yarns are deduced from the pressure field experienced by the compacted *** 3 D scanning techniques such as-cT,the proposed method can be applied on any domain size,allowing long-range variability to be *** the best of the authors’knowledge,there are no previous works that use a pressure-sensitive film on a large domain to capture the input data for a shape *** example application serves as a demonstration of a methodology which could be applied to other classes of materials.

关键词： Textiles Pressure sensors Inverse method Digital twin Geometry reconstruction Hyperelasticity

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五个氨基酸磷光性质的研究

生物化学与生物物理进展 1997年第1期24卷 60-63页

作者：黄如衡军事医学科学院毒物药物研究所北京100850

研究了 5个氨基酸的磷光特性、光谱、寿命和最小检测量 .以色氨酸 (Trp)的磷光最强 ,在λex/λem=2 90 /4 38nm ,最小检测量为 1ng ,酪氨酸 (Tyr)其次 ( 2 84 /390nm)为Trp的 1 /1 0 ,苯丙氨酸 (Phe)在 2 76/386nm ,脯氨酸 (Pro)在 30 8... 详细信息

研究了 5个氨基酸的磷光特性、光谱、寿命和最小检测量 .以色氨酸 (Trp)的磷光最强 ,在λex/λem=2 90 /4 38nm ,最小检测量为 1ng ,酪氨酸 (Tyr)其次 ( 2 84 /390nm)为Trp的 1 /1 0 ,苯丙氨酸 (Phe)在 2 76/386nm ,脯氨酸 (Pro)在 30 8/4 54nm ,组氨酸 (His)在 32 0 /4 66nm ,其磷光只有Trp的 1 % .Phe与Trp磷光寿命最长 ,在 7s左右 ;His最短 ,只有 0 4 9s;Tyr 2 8s,Pro 1 34s.另外研究氨基酸在甲醇 ,乙醇 ,丙醇 ,丁醇中及pH对氨基酸磷光性质的影响 .还计算了stokes位移能量及激化态 pK a

关键词：氨基酸膦光性质磷光

Pore size Distribution of High Performance Metakaolin concrete

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Journal of Wuhan University of Technology(Materials science) 2002年第1期17卷 42-46页

作者： c.s.Poon s.c.Kou L.Lam Department of civil and structural Engineering The Hong Kong Polytechnic University Hong Kong China

The compressive strength, porosity and pore size distribution of high performance metakaolin (MK) concrete were investigated. concretes containing 0,5% , 10% and 20% metakaolin were prepared at a water / cementitious material ratio ( W/c) of 0. 30. In parallel, concrete mixtures with the replacement of cement by 20% fly ash or 5 and 10% silica fume were prepared for comparison. The specimens were cured in water at 27℃ for 3 to 90 days. The results show that at the early age of curing (3 days and 7 days), metakaolin replacements increase the compressive strength, but silica fume replacement slightly reduces the compressive strength. At the age of and after 28 days , the compressive strength of the concrete with metakaolin and silica fume replacement increases. A strong reduction in the total porosity and average pore diameter were observed in the concrete with MK 20% and 10% in the first 7 days.

关键词： high performance concrete metakaolin pore size distribution