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Study of the Reaction Derivatization Glyphosate and Aminomethylphosphonic Acid (AMPA) with <i>N</i>,O-Bis(trimethylsilyl)trifluoroacetamide

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American Journal of Analytical Chemistry 2013年第11期4卷 647-652页

作者： T. C. P. G. Catrinck Maria Clara Santana Aguiar Amanda Dias Flaviano Oliveira Silvério Paulo Henrique Fidêncio Gevany Paulino de pinho Department of Chemistry Universidade Federal dos Vales do Jequitinhonha e Mucuri Diamantina Brazil Institute of Agricultural Sciences Universidade Federal de Minas Gerais Montes Claros Brazi Institute of Agricultural Sciences Universidade Federal de Minas Gerais Montes Claros Brazil

This work aimed to study the derivatization unprecedented of glyphosate and AMPA solutions using N,O-bis (trimethylsilyl)trifluoroacetamide (BSTFA) combined with trimethylchlorosilane (TMCS), evaluating the composition of the reaction medium, use of ultrasound, volume of BSTFA:pyridine and pH of the reaction medium. From this study it was inferred that the reaction medium was composed of BSTFA:pyridine in ratio 60:100, respectively, without ultrasonic vibration and pH adjustment that provide optimal conditions for analysis by GC-MS. Furthermore, the methodology used was simple and fast, and that was the most practical method commonly used.

关键词： Glyphosate GC-MS Derivatization BSTFA

重仓抄底动作频频！李氏资本回归内地是楼市企稳征兆？

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环球人文地理 2023年第14期 93-95页

作者：阳德鸿张琰 artur 黑白凑重庆企业策划协会

最近,李嘉诚所创立的长实集团,预接手内地房企龙光、合景的香港“凯明”项目102亿元债权的消息引发关注。有媒体将其理解为“围猎”内地房企,也有媒体称李嘉诚是最后的“白衣骑士”。不管对此事如何定性,单传闻就足以让龙光、合景着急...

最近,李嘉诚所创立的长实集团,预接手内地房企龙光、合景的香港“凯明”项目102亿元债权的消息引发关注。有媒体将其理解为“围猎”内地房企,也有媒体称李嘉诚是最后的“白衣骑士”。不管对此事如何定性,单传闻就足以让龙光、合景着急。因为身陷爆雷的两企业,境外债权能否顺利重组,最大的筹码便是总建面7万多平方米,估值高达300亿元的凯明项目。

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葡萄牙现代生态夯土住宅设计——葡萄牙一层民居

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设计家 2016年第1期 108-113页

作者： Ana Morgado Lara pinho Mariada Paz Braga Mariado Carmo Caldeira Joao Morgado Blaanc

项目位于一个大的葡萄园中间,葡萄园地势平坦,周边是一片软木橡树林.建筑仅一层,却与周边环境和谐共处,在设计过程中,项目最少程度地影响整个周边环境,给人以安静和谐的感觉.三个大小相似的长方体构成了建筑的不同功能区,每一个长方体... 详细信息

项目位于一个大的葡萄园中间,葡萄园地势平坦,周边是一片软木橡树林.建筑仅一层,却与周边环境和谐共处,在设计过程中,项目最少程度地影响整个周边环境,给人以安静和谐的感觉.三个大小相似的长方体构成了建筑的不同功能区,每一个长方体都有一个平面屋顶,为了充分结合葡萄园的景色与房屋不同功能分布,建筑被设计成“直角”状.

关键词：住宅设计葡萄牙民居生态环境和谐葡萄园设计过程周边环境

Determination of Residual Stresses Numerically Obtained in ASTM AH36 Steel Welded by TIG Process

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Materials Sciences and Applications 2013年第4期4卷 268-274页

作者： Pablo Batista Guimaraes Paulo Marcelo Almeida Pedrosa Yogendra Prasad Yadava José Maria Andrade Barbosa Aníbal Veras Siqueira Filho Ricardo artur Sanguinetti Ferreira Universidade Federal de Pernambuco Departamento de Engenharia Mecanica Cidade UniversitáriaRecife-PEBrazil

Residual stresses have been numerically determined in welded joints. In this study, the numerical model is based on the coupling of different physical phenomena considering the thermal, mechanical and metallurgical nature of a welding process. The ABAQUS software program was used to perform the numerical simulations, based on the finite element method (FEM). The aspects related to the mathematical modeling of complex welding procedures were pondered with the FEM: variations in the physical and mechanical properties of the materials as a function of the temperature;the transience and the speed of the welding process, the material phase transformations;the different mechanisms of heat exchange with the environment (convection and radiation);all them associated with a high level of nonlinearity. The heat source used in this analytical model for heat supply was the double ellipsoid model proposed by Goldak, in which a 60 mm × 50 mm and 3 mm rectangular ASTM AH36 steel plate was used for the TIG process simulations. Throughout this work, the optimization of the welding procedures currently practiced in petrochemical and ship building industries can be applied to reduce the levels of residual stresses.

关键词： Finite Element Method TIG Welding Temperature Field Residual Stresses

Quality of Seeds of Upland Rice Lines Adapted to the State of Minas Gerais, Brazil

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American Journal of Plant Sciences 2015年第12期6卷 1920-1927页

作者： Heloisa Oliveira dos Santos Flávia Barbosa Silva Botelho Ana Cláudia de Amorim Fonseca Ricardo Kenji Uenojo Marcela Pedroso Mendes Edila Vilela de Resende Von pinho Department of Agriculture Federal University of Lavras Lavras Brazil

In the final stages of a plant breeding program, a crucial step is the multiplication of seeds in production fields. Besides a solid planning, the seeds multiplication needs a special attention to guarantee seeds with high quality, genetic integrity, high germination and vigor to the farmer. The aim of this study was to evaluate the physiologic quality, enzymatic expression and respiratory activity of seeds of 20 elite upland rice lines adapted to the state of Minas Gerais, Brazil, from the upland rice breeding program from three Brazilians research institutions. The quality parameters evaluated were root protrusion, number of normal seedlings in the germination test, number of normal seedlings in the germination first count, initial stand from emergence test, speed of emergence index, seedlings shoot and root length, percentage of O2 and CO2 from respiratory activity and the expression pattern of the enzymes alcohol dehydrogenase (ADH) and malate dehydrogenase (MDH). The seeds quality varied among lines, allowing the selection of lines with best performance. The respiratory activity was lower in seeds of lines with high quality. The enzyme ADH was an excellent marker to infer about the quality of seeds, and the variation in the expression of MDH did not depend on the quality of rice seeds. The lines BRS Esmeralda, CMG1896 and CMG1509 showed high physiologic quality in their seeds, and therefore, they should receive higher attention in rice breeding programs.

关键词： Oriza sativa Physiologic Quality Enzymatic Expression Respiratory Activity Vigor

Displacement of the non-reduction temporomandibular disk with limitation of opening. Story of a clinical case—Follow up five years

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Health 2014年第5期6卷 475-478页

作者： Gustavo Helder Vinholi Túlio Marcos Kalife Coêlho Elizeu Insaurralde Anísio Lima da Silva Gustavo Adolfo Pereira Terra Luís Gustavo Nunes Dias de pinho Department of Restorative Dentistry and Prosthodontics Dental School Federal University of Mato Grosso do Sul Mato Grosso do Sul Brazil Postgraduate Program in Health and Development in the Midwest Region Medicine School Federal University of Mato Grosso do Sul Mato Grosso do Sul Brazil

Displacement of the non-reduction disk with limitation of opening (DDwLO) can be treatment of the non-surgical form. However, it required scientific and clinic knowledge of diagnostic area of the disorders temporomandibulares. This study was performed with the patient CN, 18 years, white, female, who went to the orofacial pain ambulatory with complaints of extreme pain on the right temporomandibular joint (TMJ) and limitation of maximum opening of 29 mm with shift to right, which she has been suffering for at least three years. After a criterion anamnese the diagnosis hypothesis found was a displacement of the non-reduction disk with limitation of opening. The treatment was based on infiltration in the right TMJ with anesthesic followed by mandibular manipulation. After the therapeutic conduct the patient presented clinical signals of normality with absence of trismus and mandibular movement without shift to right. The patient was followed up during five years not presenting return of the pathology.

关键词： Temporomandibular Disorders Displacement of the Disk Temporomandibular Joint

DIFFERENT NANOFIBRILLATED CELLULOSE AND INNOVATIVE STRATEGIES DEVELOPED FOR THEIR USES IN COATING OR EXTRUSION

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DIFFERENT NANOFIBRILLATED CELLULOSE AND INNOVATIVE STRATEGIE...

Modelling a Job-Shop Plant Using Queuing Networks Techniques

第十六届木材、纤维及制浆化学国际会议

作者： Julien Bras Karim Missoum Nathalie Lavoine artur Klamczynski Isabelle Desloges Naceur Belgacem William J Orts Alain Dufresne Laboratoire de Genie des Procédés Papetiers(LGP2) UMR CNRS 5518Grenoble INP-Pagora-461rue de la papeterie-38402 Saint-Martin-d'HereseFrance USDA-ARS-WRRC Bioproduct Chemistry Engineering800 Buchanan StreetAlbanyCA 94710USA USDA-ARS-WRRC Bioproduet Chemistry Engineering800 Buchanan StreetAlbanyCA 94710USA

Because of the high potential of nanocellulose in different applications such as reinforcement or barrier enhancement of polymer nanocomposites,researchers have developed different routes to produce such cellulosic *** totally different materials are in fact described as NFC or MFC because process and/or pretreatment are usually different. The first target of the present work is to give an overview of the different kind of cellulose nanofibers and proposed a classification to differentiate each of them depending on the process,the pre- and the post-treatment. Moreover one of their main drawbacks is their gel-like structure at very low concentration and the fact that films are obtained as soon as they are *** issue strongly limits their use in some important process like coating or extrusion. That's why in a second part of this presentation, different solutions will be proposed to overcome this issue. Different kinds of nanocellulose have been prepared in this *** will be discussed and compared by Field emission gun scanning electron microscopy. New strategies to use this nanocellulose in coating and extrusion will be *** examples will be presented dealing with the impact of the treatment strategy. Concerning the coating,chemical grafting is proposed and their impact on viscosity of different suspensions is detailed. Regarding extrusion a pre-mix strategy is proposed. Thermal and mechanical properties of bionanocomposites are analyzed with TGA and tensile *** new strategy allows addition in extruded bionanocomposite of 10% nanocellulose which strongly increased Young's modulus (8 times higher).

关键词： nanofibrillated cellulose chemical grafting drying process coating extrusion

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材料科学与工程（中英文B版） 2013年第9期3卷 612-618页

作者： artur Barreiros Mechanical Engineering Department Instituto Superior T~cnico Av. Rovisco Pais 1049-O01Lisbon Portugal

This article illustrates the use of open queuing networks for the planning of discrete production systems of the job-shop type. For this purpose, it is assumed that the system can be modelled by a set of workstations. The mathematical and numerical procedures, related to the definition of the model that is used to characterize the system operations, are analyzed first. For this purpose, an ideal situation of a system with only two workstations and four products is used. Next, the application of the model to a real case study, corresponding to a metalworking company, is illustrated. In this case, the parameters that can be used to characterize the efficiency of the system are also introduced. The performance diagnostics involves the analysis of the work-in-process and the production lead-times. The optimization of the system involves the probabilistic characterization of the demand and the characterization of the probability of transference of products among workstations. Among other alternatives, a waiting-cost function, which is evaluated using the queuing parameters, can be used to compare alternative solutions.

关键词：排队网络作业车间网络技术建模生产系统厂房表征系统操作模型

Deformation Analysis Due to Early Loading of Concrete Buildings

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Journal of Civil Engineering and Architecture 2016年第6期10卷 690-695页

作者： Romildo Alves Berenguer Fernando artur Nogueira Silva Joao Luiz de Melo Ramos Fabio Cameiro Lourenco Pryscylla Femanda Silva Chaves Ana Cecilia Ferreira Leite Department of Civil Engineering Catholic University of Pernambuco Recife 51110-200 Brazil

The building industry has experienced in recent years a strong growth in demand in general and in the case of reinforced concrete buildings this increase has been more marked. This fact has also contributed to accelerate all stages of the production process of these constructions with more pronounced effects on the methodologies used in the constructive steps that influence directly the structural design of the building. Structures loaded at ever earlier ages, in which the strength and deformation properties of materials are not yet sufficiently mature. It is a variable that needs to be taken into account already in the design phase so that the concrete structure behaves within acceptable level of reliability taking into account design code recommendations for service life. To understand the importance of constructive effects and to assess its magnitude in the execution of reinforced concrete buildings, this paper presents result from nonlinear analyses using finite element method adopting an approach commonly referred as staged construction applied to a typical building found in the practice. The effects of creep and shrinkage were considered and the results obtained demonstrate that the strains due to constructive effects can, in certain cases, assume representative values which, if ignored, can lead to important pathologies in the building.

关键词： Reinforced concrete buildings constructive effects staged construction creep shrinkage.