bluuebunny/crossref_metadata_2025 huggingface dataset:
D'un fantasme de gémellité à une anorexie mentale : psychopathologie du double
Authors: Rivière Manon , Haza Marion
Published: April 2013

Partant du suivi thérapeutique individuel d’une jeune patiente de treize ans, Clémentine , nous explorerons les retentissements que peut avoir un lien sororal trop fort, et la façon dont il s’avère parfois être un frein au processus de séparation-individuation. Porté à son comble dans le fantasme de gémellité, il en découle un Moi aux contours imprécis, et une poursuite de la relation potentiellement délétère pour un sujet au narcissisme fragile. Indifférenciation des corps et des appareils psychiques, l’anorexie vient faire éclater cette bulle spéculaire, lorsqu’un seul des sujets atteint une puberté physiologique. Dans l’espace de séparation physique et psychique qu’offre le cadre de l’hospitalisation, les entretiens cliniques nous éclaireront sur les modalités de ce passage d’un double vers un soi, et nous aideront à réfléchir sur les enjeux et les limites de la mise en place d’un travail de subjectivation.
Du fantasme de l'enfance « on bat un enfant » à l'acte d'adolescence « je bats mon parent »
Authors: Vicente Cindy , Robert Philippe
Published: April 2013

Freud aborde le fantasme de fustigation « on bat un enfant » comme faisant partie de la dynamique psychique de tout individu. Il se manifeste à la fin de la période infantile et est issu de remaniements psychiques rythmés par trois phases. Une réécriture de ce fantasme émerge lors de l’adolescence. Frapper le parent est considéré comme la mise en acte de ce que tout adolescent fantasme : « Je bats mon parent ». On comprend que les phases surviennent de façon télescopée, toutes au même moment, portées par la flambée pubertaire. Chacune vient marquer un mouvement différent d’élaboration de la séparation d’avec les figures œdipiennes. La réémergence de ce fantasme à l’adolescence vient déborder le système de pensée, laissant coexister de forts désirs œdipiens tout en punissant un autre de ne pas les avoir arrêtés.
Anorexie mentale et troubles de l'image du corps : à propos de leur prise en compte en psychodrame psychanalytique individuel
Authors: Boutinaud Jérôme , Chabert Philippe
Published: April 2013

Le contexte psychopathologique de l’anorexie mentale chez l’adolescent met au premier plan la prise en compte du corps à la fois dans sa réalité effective, mais aussi au niveau des représentations dont il vient faire l’objet. Un certain nombre de troubles de l’image du corps peuvent dès lors être décrits et pensés comme des formes de solutions symptomatiques au travers desquelles l’adolescent anorexique vient essayer d’assurer des bases narcissiques mal établies et parfois très fragiles. La thérapeutique doit ainsi prendre en compte cette dimension pour permettre la résolution de ces troubles. Le psychodrame psychanalytique, appliqué à une cohorte de patients souffrant de ces troubles, nous servira ici de support méthodologique pour mettre en exergue les éléments de cette problématique. Seront aussi discutés les effets thérapeutiques de l’utilisation de cette technique au travers d’un certain nombre de leviers (analyse des éléments corporels du contre-transfert, dynamique du toucher, utilisation du double et figurations corporelles).
Agression sexuelle et transformation pubertaire, une potentialisation de l'effraction traumatique ?
Authors: Tovmassian Laurent Tigrane
Published: April 2013

Travail autour d’une clinique d’agressions sexuelles vécues à l’adolescence, dans l’effroi et la sidération suite à l’effraction. À partir d’un retour sur la question de la reviviscence propre au syndrome de répétition traumatique post-traumatique l’accent est mis sur l’hypothèse d’une période de latence traumatique. Le processus traumatique alors prédominant mettrait hors-jeu le travail de réaménagement, de liaison, de symbolisation du sujet. De telles agressions et leur devenir psychique figé mais actif, caractérisé par le retour de l’identique, peuvent-ils être articulés avec les registres fantasmatiques propres à l’adolescence et à la transformation du corps pubertaire ? Ou avons-nous à faire à deux corps étrangers internes œuvrant pour leur propre compte et attaquant le sujet alors pris entre le marteau et l’enclume ?
Adolescence, comment le langage y travaille ?
Authors: Danon-Boileau Laurent
Published: April 2013

L’adolescent cherche à construire une langue qui témoigne de sa révolte. Toutefois, les exigences du code inhérent à tout parler le contraignent à l’organisation de règles sophistiquées dont on aurait tort de croire qu’elles constituent une ruine de la langue classique. Il s’agit d’un travail sur les normes qui interroge les processus de création nés de la révolte et de l’excès.
Désolation de l'adolescence métamorphose de la communauté
Authors: Girard Mathilde
Published: April 2013

Ce texte propose d’interroger la place des expériences de l’adolescence à partir d’une réflexion historique et politique sur le sens de la communauté. Si la jeunesse fut toujours en première ligne dans les mouvements d’insurrection et d’émancipation de la civilisation, les désastres du xx e siècle ont imprimé leur marque sur les réalisations humaines et ont profondément perturbé le rapport de l’action au projet et la confiance en l’avenir. La violence de l’acte est en nous, jusque dans les formes extrêmes par lesquelles nous nous protégeons. Imaginer comment se rapprocher de l’adolescence et inscrire ses manifestations dans le rythme plus vaste des générations suppose de reconnaître cette atteinte et cette contradiction au cœur de la communauté, et de prendre soin, à tous les moments de la vie humaine, de la longue métamorphose dans laquelle nous sommes engagés.
L'inconscient de l'enquête, une expérience de savoir
Authors: Chauvier Éric
Published: April 2013

L’observation de la souffrance humaine se fait souvent au moyen d’une distance obtenue par le déni d’états émotionnels qui, pourtant, apparaissent souvent déterminants à l’observateur. Cette contribution cherchera à vérifier cette hypothèse en prenant pour exemple une mission de recherche-action effectuée dans une institution accueillant des adolescents en rupture familiale. Fortement troublé par la voix étrangement désaffectée d’une adolescente, l’observateur se trouve contraint de renoncer au caractère distancié d’un régime habituel d’expertise. Ce n’est pas l’histoire de cette adolescente qui le trouble, mais ce qu’elle lui renvoie de son propre vécu familial, lequel se confond avec une démarche scientifique d’observation. Le retour vers cet « inconscient de l’enquête » constitue la base de ce que nous pourrions nommer une initiation.
Le cadre institutionnel dans ses rapports à la transgression et à la loi
Authors: Hans Danielle
Published: April 2013

L’analyse d’une courte séquence d’un entretien non directif avec un jeune adolescent conduit l’auteure à considérer le cadre institutionnel comme une instance de réflexivité, dont la fonction de limitation du désir n’est pas un contrôle sur le sujet mais plutôt un moyen de l’aider à se sortir des déterminations psychiques qui l’aliènent.
Du rite de passage à l'inscription de soi
Authors: Nogueira-Fasse Maryline
Published: April 2013

L’article porte sur une recherche menée en Sciences de l’éducation dans une démarche clinique à orientation psychanalytique, dans le cadre de la formation des enseignants(es). Celle-ci est envisagée sous l’angle d’une crise identitaire professionnelle nécessitant un passage vers un « devenir enseignant » qu’une ouverture à l’anthropologie a permis de mettre en perspective avec les rites de passage. Il sera proposé d’envisager des liens entre la marque corporelle du rituel et « l’inscription de soi » dans un travail d’écriture clinique.
Pour une nouvelle épistémologie
Authors: Dayan Jacques
Published: April 2013

Les neurosciences peuvent-elles conduire à une nouvelle métapsychologie de l’adolescence ? L’article de N. Georgieff, nous conduit à nous interroger sur les concepts de complémentarité et d’intégration, le premier particulièrement développé par G. Devereux. Il emprunta aux domaines essentiels aujourd’hui, des interrogations sur la nature de la théorie suscitées par le développement de la physique quantique et relativiste.
Manic defenses against loneliness in adolescence
Authors: Barrett Thomas F.
Published: April 2013

Dans cet article je souligne les difficultés auxquelles les adolescents sont confrontés alors qu’ils essayent de parvenir au changement d’objet. Même pour les individus qui vont bien, ce processus est long et conflictuel, entraînant un état interne insoutenable, qui est déclenché par le sentiment de perte d’objet. Se sentir seul à l’adolescence est la conséquence non pas d’un retrait d’amour de la part de l’objet, mais plutôt d’un processus incontournable à l’intérieur de l’adolescent qui, de façon progressive, retire les investissements libidinaux des objets primaires pour les transférer sur de nouvelles relations adultes. Ainsi, un sentiment profond « d’être » vide, ressenti par beaucoup d’adolescents, est associé à ce processus. Les défenses mobilisées pour combler ce vide sont de caractère maniaque, y compris l’acquisition compulsive des objets de remplacement (e.g., musique téléchargée sur Internet, jeux vidéo, nourriture, vêtements, chaussures, etc.) ainsi que la consommation excessive d’alcool, de drogue et de cigarettes. Toutes ces défenses semblent témoigner d’une tentative régressive, relevant d’un registre oral et des processus primaires (souvent cyclique, rythmée par des mouvements « d’incorporation » et « d’expulsion »), pour tenter de transformer la dépression et le sentiment d’être seul en allégresse, et de trouver répit dans des activités fondées sur le principe de plaisir. J’ajouterai que, bien que les causes de ce sentiment d’être seul soient complexes, il fait partie des nombreux éléments qui sont à l’origine de la promiscuité sexuelle, des troubles d’alimentation et des symptômes de scarification et d’auto-mutilation.
La « valeur » dans l'industrie financière : le prix des actions cotées comme « vérité » technique et politique
Authors: Ortiz Horacio
Published: April 2013

Ce texte analyse les pratiques d’évaluation des actions cotées à partir d’une enquête par observation participante auprès de courtiers à New York et de gérants de fonds à Paris entre 2002 et 2004. Les analystes financiers, traders , vendeurs d’information et gérants de fonds, utilisent tous la même théorie financière, en suivant des procédures standardisées qui définissent la « valeur » de manières différentes selon les professions, mais en la problématisant toujours par rapport à sa « vérité ». Dans ces pratiques, agissant au nom des clients réels ou potentiels dont ils sont censés représenter les intérêts, les employés se positionnent comme « investisseurs », dont les interactions auraient comme résultat la constitution de « marchés efficients ». Les employés sont liés par des relations de compétition et de complémentarité, qui s’articulent notamment à partir d’arguments techniques concernant les différentes définitions de ce qui fait la « vérité de la valeur ». Mais, comme le fait la régulation financière, ils mobilisent aussi des arguments sur le fait que la « vérité », qui serait reflétée dans les prix, fait partie du projet politique qui donne à l’industrie financière, en tant qu’espace social des « investisseurs qualifiés », le rôle de réaliser des « marchés efficients » pour atteindre une allocation sociale « optimale » du crédit. L’industrie financière est ainsi censée produire une « vérité » à travers les prix, qui est à la fois technique et politique.
Violences à l'école, réponses professionnelles et éthique
Authors: Carra Cécile
Published: April 2013

Ce texte se donne pour objectif d’interroger tout à la fois certaines évidences et certaines zones d’ombre sur les violences à l’école. Il tente de poser un cadre de réflexion en dégageant à la fois des tendances dominantes et leurs lignes de tension. Pour ce faire, il s’appuie sur deux notions à partir desquelles peut se construire cette réflexion : les normes et les professionnalités, permettant en retour d’interroger la construction sociale du problème de la violence à l’école. Cette interrogation sur la construction de l’objet met en perspective à la fois la permanence de la violence à l’école et ses manifestations contemporaines, la récurrence de réponses et leurs formes actuelles, ainsi que les questions qu’elles soulèvent sur le métier d’enseignant et, au delà, sur les finalités de l’éducation.
Institution scolaire et recherche biographique : prévenir la violence par la prise en compte et la mise en sens des parcours scolaires
Authors: Dizerbo Anne
Published: April 2013

Cette contribution présente un dispositif de recherche prenant source dans des questions liées à ma pratique professionnelle d’enseignante. Il fait travailler les apports de la recherche biographique dans une institution éducative en questionnement pour découvrir si le récit de leur vécu scolaire est une médiation permettant à des jeunes considérés en situation de difficulté de configurer une figure d’élève qui forme un compromis acceptable, donc le moins violent possible, entre leurs différentes identifications. Il observe si le processus de biographisation, par la reconnaissance des singularités de ses membres aussi bien que de leurs trajectoires communes, favorise la constitution d’un groupe en communauté de travail et s’il peut contribuer, par la construction du sens de leur parcours, à modifier le rapport au savoir et la posture face aux apprentissages de certains jeunes en souffrance dans une situation scolaire qui les objective.
REALIZATION OF A HIGH-PERFORMANCE OXYGEN CONCENTRATOR SYSTEM WITH ON-LINE MONITORING AND OFF-LINE REPORTING ABILITIES
Authors: Atacak Ismail , Korkusuz Muzaffer
Published: April 2013

This study presents the design and implementation of a high-performance oxygen concentrator (OC) system that can continuously monitor its own operating parameters and report information about the status of the system and patients off-line. In the designed system, the functions related to oxygen production, monitoring facilities, and reporting facilities are performed by its two basic sections: hardware and software. Hardware section is an apparatus supplying oxygen at the required purity, informing patients about the operating parameters of device through a visual display, and periodically saving these parameters to a memory card. In this section, in order to achieve a high-purity oxygen from the system output, a new structure based on the principle of equal pressure application to the surface of molecular sieves is used in the absorption columns of OC apparatus. Software section is an interface program that saves the patient and device information in the memory card into the database, and also allows doctors and technical services to make an assessment and report by using this information. Experimental results show that the proposed system produces oxygen at high purity for flow rates of 1–5 l/min.
Ask Me What I Want
Authors: Lukofsky Marla
Published: April 2013

This invited commentary contains a former breast cancer patient’s reaction after reading Amy Price’s article ‘Sarah’s Choice: Breast Cancer and Mammogram Screening Decisions’. The current climate of changing medical protocol regarding early breast cancer screenings is daunting at best. Controversial decisions as to their frequency, the conflicting value of the mammogram as an effective tool, and how these factors will impact on the survival rate of any breast cancer patient are up for question. Whether or not the current protocol is based on the latest studies or mere cost saving measures, is it important to follow the system’s decision or to decide for oneself what is truly best? All this is examined in this narrative.
Managing Sensor Data Uncertainty
Authors: Rodríguez Claudia C. Gutiérrez , Servigne Sylvie
Published: April 2013

With an increasingly technological improvement, sensors infrastructure actually supports many current and promising environmental applications. Environmental Monitoring Systems built on such sensors removes geographical, temporal and other restraints while increasing both the coverage and the quality of real world understanding. However, a main issue for such applications is the uncertainty of data coming from sensors, which may impact experts’ decisions. In this paper, the authors address this problem with an approach dedicated to provide environmental monitoring applications and users with data quality information.
A Smart University for a Smart City
Authors: Nuzzaci Antonella , La Vecchia Loredana
Published: April 2013

The use of technological devices has changed the way individuals interact with their university environment. This paper examines the use of a smart context as a link between individuals and their university environment through an exemplification of the urgent problems deriving from different domains and technological systems, as well as of information and communication devices employed in university teaching-learning contexts, to improve the quality of higher education and individuals’ cultural life. When does the university become “smart”? It is not sufficient that universities define themselves as smart places to underline the main challenges they must face in their efforts to become and remain smart. The article recognizes a university as a “smart” institution when it has its roots in the understanding and critical awareness of the basic knowledge, in the identification of the more realistic competencies and the search for the meanings of a “smart university community” that pursues high quality. The paper concludes with an account of the experience of the ICT Centre of the University of Ferrara, who try to achieve these goals, implies the adoption of innovative perspectives, and discusses the building of a new culture putting in the middle a “smart university” and its cultural principles.
From Smart Cities to Smart Environment
Authors: Cartelli Antonio
Published: April 2013

After a short introduction on the evolution of ICT influence on mankind and on the meaning and functions of smart cities, the Me.Dig.Eco. project (Eco-Sustainable Digital Mediterranean Sea) is discussed and it is especially showed how it can contribute in the construction of a virtual environment, having the following main features: a) aiming at helping people to have instantaneously at hand any information on the places in that environment and safely navigating from place to place, b) creating a smart and easy communication channel with the population of the coasts and the islands in that sea, to be fully immersed in those communities and living a full immersion experience in those natural environments.
Thermal Power Plant Circulating Water Flow Measurement Method Research
Authors: Wang Zheng Xian , Guo Bao Ren , Zhang Min , Yang Jian Yong , Liu Li
Published: April 2013

This paper given an online flow measurement method of large diameter pipe and low-head. This method can be applied to measure circulating water flow of thermal power plant. The characteristics of method is that: the measuring device adapted the method to solve the problem of the online flow measurement of circulating water, and to provide the necessary operating parameters for optimal operation of the unit cold-end system.
Numerical Study of Heat Transfer Enhancement in Microchannels of the MTPV Systems
Authors: Wu Ge Ping , Lu Ping
Published: April 2013

Heat transfer and fluid flow in the microchannel cooling passages with three different types of the MTPV systems are numerically investigated. The heat transfer characteristics and thermal performance of the microchannels are analyzed using different Reynolds numbers and hydraulic diameters. Local heat transfer coefficient, total pumping power, heat transferred are obtained from the simulations and the performance is discussed in terms of heat transfer coefficient and thermal efficiency. Results indicated enhanced performance with the smaller hydraulic diameters, and slighter penalty in pumping power. The increase in Reynolds number cause an increase in the heat transfer coefficient at the expense of decreased thermal efficiency. It is also found that the highest heat transfer coefficient is expected in rod bundles microchannels. However, round microchannels have a better thermal efficiency than others.
Analysis and Application of Electronic Instrument Transformer in Digital Substation
Authors: Gao Yong Xin
Published: April 2013

Electronic transformer Manager nature is a will simulation volume transformation for digital volume of device, they will simulation of current and the voltage signal in as possible near signal source of local used most has price of reliable way will its transformation for digital volume, electronic type transformer Manager and merged unit as digital substation of component, and traditional transformer Manager compared to has insulated simple, and dynamic range wide, and anti-saturated performance strong, and Advantages of data output. combined digital substation with IEC61850 in the text, examined issues such as data synchronization of electronic instrument transformers, made recommendations on engineering practice.
Level of Urbanization and Land Use/Land Cover Landscape Pattern of Relationship Analysis
Authors: Xu Chen Guang , Anwar Amat
Published: April 2013

On the basis of analysis of the development of urbanization and land use change in Zhengzhou City in2004-2010, The drive mechanism of the intensity of land use change in the research context of rapid urbanization, To explore the degree of land use change human driving factors, Drive and build a model, The results show that: Unit of agricultural land and the ratio of the output value of the land for construction as well as population density and land use intensity positive correlation, Making land use intensity tends to increase, The population density growth, Urbanization of the population and economic non-farm is the main driving factor for the intensity of land use change. And then proceed to the analysis of the spatial pattern of Zhengzhou City, Investigate the level of urbanization and land use / cover the relationship between landscape pattern.
A Novel Method on Simultaneous Removal of SO2, NO and Hg0 from Simulated Flue Gas
Authors: Zhao Yi , Xue Fang Ming , Shao Yuan
Published: April 2013

A novel wet process has been developed to simultaneously remove NO, SO2 and Hg0 from flue gas. According to the conditions of the bubbling reactor, diperiodatocuprate (Ⅲ) coordination ion solution was prepared with CuSO4•5H2O, KIO4, K2S2O8, and KOH, and the effects of the various influencing factors, such as diperiodatocuprate (Ⅲ) coordination ion solution concentration, reaction temperature, solution pH on removal efficiencies were investigated. The removal efficiencies of 98% for SO2, 90% for Hg0 and 56.8% for NO were obtained, respectively, under the optimal experimental conditions, in which diperiodatocuprate (Ⅲ) coordination ion solution concentration was 6 mmol /L, the reaction temperature was 323 K, and the solution pH was 9.0. That [Cu(OH)2(H3IO6)]- was the main existing form of the absorbent at the optimal experimental conditions was confirmed by calculating the concentration ratios of IO4- and its dissociation products / [IO4-]ex under different pH, and thereby simultaneous removal mechanism for SO2, NO and Hg0 was proposed.
Stable Carbon and Nitrogen Isotopes in the Tidal Flat Sediments of Northern Yellow Sea
Authors: Liu Bao Zhan , Liu Yu , Li Ying , Wang Hai Xia
Published: April 2013

Stable carbon and nitrogen compositions (δ13C, δ15N) of sedimentary organic matter were determined in the tidal flat of northern Yellow sea. The results showed that stable carbon and nitrogen isotopes compositions of the sediment samples ranged from −24.669～−19.457‰ and 2.125～7.043‰, respectively. The highest value was in St.DLD, and the lowest was in St.Z. Similar δ13C values were observed in St.H (−21.996±0.651‰) and St.P (−22.021±0.187‰), and similar δ15N values were between St.DLJ (5.502±0.223‰) and St.P (5.310±0.294‰). The δ13C and δ15N values did not show any significant regularity. The δ13C and δ15N signatures showed some fluctuation, no obvious regularity. The major source of terrestrial organic matter was from the emissions of river and human pollutant.
Analysis of the River Flow and Sediment Concentration Change before and after Wenchuan Earthquake
Authors: Qian Feng , Hu Bo , Liu Jing Jun , Xiong Ming Biao , Hu Heng
Published: April 2013

Wenchuan earthquake triggered floods, landslide, collapse and secondary geological disaster,trigger a new soil and water loss, having the significant influence to the local river water quality.According to shaba and jiangyou station 2006 January to 2011 December flow and sediment concentration data for statistical analysis, this paper discusses the disaster area river water and sediment changes on the influence of river water quality before and after the earthquake. Results show that,the monthly average flow change trend does not take place obvious change before and after the earthquake,during the earthquake the monthly average sediment concentration is higher than any other in the same period of monthly average sediment concentration,jiangyou station and shaba station the average daily flow rate on May has no obvious change before and after earthquake, the earthquake for different regional influence is different , different regions of different section of the average sediment coefficient has certain space diversity,in jiangyou station the average sediment coefficient before the earthquake is more than the average sediment coefficient after the earthquake but the change of average sediment coefficient in shaba station was not significant before and after the earthquake.
Study of a Hybrid Wind and Solar Energy Power System
Authors: Chen Hui Yong , Zhang Qiang , Zhou Qin , Xie Yong Hui
Published: April 2013

A new kind of hybrid wind and solar energy power system was proposed in this paper. In the hybrid system, the technologies of compressed air energy storage (CAES), solar heat storage and gas-steam combined cycle power generation were combined together. At same oil consumption of 19.48 t/h, the output power of the hybrid system in the paper was 194.69 MW, while that of the conventional gas-steam combined cycle was 103.15 MW. The difference between the two cycles was 91.54 MW, which was equivalent to the amount of wind and solar energy power generation. When annual effective operating time of the hybrid system was 2600 h, the power output of wind and solar energy power generation reached 238 million kW•h. If coal-fired power plants were taken as the reference standard, about 113,050 tons of coal was saved per year. An overall benefit of Ұ604.28~626.01 million was obtained per year. As a result, a good economic, environmental and social benefit was achieved.
Suitability Evaluation of Tunnel Engineering to Protect Ecological Environment
Authors: Song Jian , Li Zhong Yan , Fan Yun Yun
Published: April 2013

Transport development bring a negative impact on human survival ecological environment, such as destruction of vegetation, air pollution, soil erosion and other environmental issues. The actuality proves that the use of tunnel development of underground space can improve traffic quality, while also protecting the environment. Therefore, tunnel engineering and utilization of underground space are to protect the ecological environment to be effective ways for realizing economic sustainable development of economy. In this paper, based on the practical application at home and abroad, for the big cities, mountain areas, river waters, the suitability evaluation and beneficial discussion about the transportation by using tunnel to protect the ecological environment are of great practical significance to protect and improve the ecological environment.
The Experimental Research on Treatment of Schoolyard Wastewater by Constructed Wetland
Authors: Xu Bing , Pei Hai Yan , Liu Jia
Published: April 2013

The research was conducted at Shandong Architecture University of Jinan, the capital of Shandong province, China. The lab and onsite experiment was carried from March, 1, 2010 to November, 1, 2010. schoolyard wastewater was pumped to constructed wetland tank. Some conclusions were found: the shale ceramsite had a strong adsorption capacity. The rate of adsorption was very quickly;the effext of Phragmites australis was obviously. The removal rate of COD, TP,TN could raise 10,15,30% seperatively;treating schoolyard wastewater by constructed wetland was feasible.
Analysis of Influencing Factors on Environment Vibration Induced by Metro Transit and Fuzzy Comprehensive Evaluation
Authors: Zhang Chen Chen , Qian Zhen Dong , Chen Lei Lei , Li Xing Hai
Published: April 2013

To assess the effect of environmental vibration induced by metro transit, a fuzzy comprehensive evaluation was conducted. First, a three dimension bridge-soil-building FE model was established using the parameters from a practical engineering, and the time-history loads were utilized to analyze the vibration in the nearby buildings. Second，a questionnaire survey was conducted based on which the human body comfort effect factor and its weight were determined. Last, the fuzzy comprehensive evaluation was conducted combined with the results of the FE analysis and the questionnaire. The evaluation results show a high consistence with the fact, indicating that the fuzzy comprehensive evaluation is a effective method to evaluate the effect of environmental vibration to the human body.
Experimental Study on the Treatment of Uranium-Contaminated Mine Wastewater Using Zero-Valent Iron Nanoparticles
Authors: Yuan Tu Gui , Chen Di Yun
Published: April 2013

Zero-valent iron nanoparticles( nano-Fe0) were applied as a treatment tactics for a uranium-containing mine wastewater taken from Shaoguan, Guangdong, China. Different factors including pH value, nano-Fe0 dosage,reaction time were introduced to study the effect posed by those factors.Results indicated that those factors have significant effect on uranium removal rate.The best removal effect happened when pH=5~6, nano-Fe0 iron dosage is 2g/l,reaction time is 1h.It is also demonstrated that nano-Fe0may be an effective material for treatment of complex uranium-contaminated effluent.
Research of Dry Cutting Technology Based on Green Manufacturing
Authors: Xi Guan Nan , Xie Wei An , Xie Guo Ru
Published: April 2013

Based on the analysis of the disadvantages of traditional wet cutting processing, it is reflected that dry cutting technology in green manufacturing has the advantages of less environmental pollution and rational utilization of resources. The research into dry cutting technology and the quick application of it into industry has a great significance in protecting ecological environment and improving manufacturing level.
Diversity of Microbial Communities under High Flocculating Characteristics by Biolog
Authors: Li Shan , Zhu Yan Bin , Ma Fang , Li Deng Xin
Published: April 2013

So far, the study on diversity of microbial community which produces flocculating substances is relatively few. In this paper, soil, activated sludge and wastewater samples are collected from 21 different places, and then are cultivated in 5 different media. 5 different colony groups form large amounts of slime externally, which having high level of flocculation activities. Biolog is used to analysis the functional diversity of microbial communities.The microbial community BF-BCT having highest flocculating capability. The AWCD analysis results shows that the micro be in the BF-BCT utilized more carbons compared with the other six colony groups. In addition, the diversity analysis has similar conclusions with PCA analysis.
The Effect of Membrane Treatment on Chlorine Decay and Trihalomethanes Formation in Water Distribution Systems
Authors: Zhao Tao Tao , Li Cong , Yu Hong Liang , Wang Zi Long , Minda Ba Yi Er , Mao Xin Wei
Published: April 2013

The experiment was carried out to measure the effect of membrane treatment on the kinetics of chlorine decay in PE pipes in the water distribution systems. The results revealed that water had the potential to form halomethane compounds with chloroform being the most dominant. The formation of THMs is no longer relatively exponential relationship with the reaction time, but also decided by complex elements, including DOC, pH, conductivity, flow rate, and several other indexes. Since Chloroform (CHCl3) has the maximum concentration of the four THMs, clear understanding of its causes, pathway and mechanism will help to regulate and solve the THMs problem.
Study on Biofilm Colonization in Different Types of Packing
Authors: Chen Ya Nan , Guo Zong Lou , Wu Hai Tao , Liu Lu
Published: April 2013

To analysis the effect of different types of packing on the biofilm, combined packing, elastic packing and novel bamboo packing were selected as the testing packing in the contact oxidation tank and studied in the static condition. The indexes such as the total bacteria count and water quality changes were investigated to illustrate the characteristics of membrane and the effect of biofilm colonization in different membrane system.
Adsorption and Removal of As (V) from Drinking Water Using D301-Fe
Authors: Li Chang Hai , Xu Wei
Published: April 2013

The adsorptive behavior of As(V) by using Fe-loaded D301(D301-Fe) was investigated under various conditions. The results indicated that As(V) strongly adsorbed at pH<10. Adsorption isotherm data could be better interpreted by Langmuir model. The kinetic data of the adsorption could be well described by the Lagergren second-order rate equation. equimolar addition of other anionic species such as SO2- 4, Clˉ and Fˉ had no influence on the adsorption of As(V), but PO3- 4 had a strong inhibition on As(V)
Experimental Investigation of a Heat Storage Solar Water Heater-Water/Air Source Heat Pump Double Stage Coupling Capillary Network Heating System
Authors: Zhang Hong Chen , Xu En Jiang
Published: April 2013

this paper constructs a new type experimental investigation of a heat storage solar water heater -water/air source heat pump double stage coupling capillary network radiation heating system, The system is a combination of a solar clean , reproducibility and water/air source heat pump energy saving property, is a kind of energy saving, pollution-free energy efficient system. In qinhuangdao local climatic conditions test capillary network radiation heating, water source heat pump, air source heat pump operation parameters, analyzes the system as a whole, it is concluded that the operation of heat storage solar water heater - water/air source heat pump double stage coupling capillary network radiation heating system is suitable for in qinhuangdao climate condition in application.
Numerical Analysis on the Performance of Miniature Stirling Engine Driven by Double Swash Plates
Authors: Qu Yang , Zheng Shao Chun
Published: April 2013

This paper describes a miniature Stirling engine driven by double swash plates. Based on domestic and foreign analysis method of the thermodynamic characteristic theory of the Stirling engine, the establishment of a relevant mathematical model and performance on the numerical analysis were presented. The results include V-t diagrams, P-V diagrams, P-n diagrams, h-n diagrams and the effects of phase angle between the compression and expansion volumes on the engine’s power and efficiency. This paper offers invaluable guide for similar design.
Effect of Common Dissolved Ions on the Reduction of Nitrobenzene by Sucrose-Modified Zero-Valent Iron
Authors: Li Hui , Zhao Yong Sheng , Zhou Rui , Chen Zi Fang
Published: April 2013

NB reduction with NZVI will be effected by factors. In this study, batch experiments were carried out to evaluate the single and combined actions of common dissolved ions including HCO3-, Cl-, SO42-, NO3-, Mg2+ and Ca2+. The results showed that the removal efficiency of NB was enhanced with the increase of the concentration of added HCO3-, Cl-, SO42-, NO3- as a descending order, and SO42- would be an inhibitor when its concentration was lower than 250 mg/L. Mg2+ and Ca2+ themselves had no obvious influences on NB reduction with SM-NZVI, but they could weaken the positive effects of other coexisting ions like Cl- and SO42-. Coexistence of these dissolved ions would promote metal carbonate precipitations and thus made against NB degraded and aniline produced.
Study on Thermal Radiation Properties Enhancement of the Lower-Heat-Storage Asphalt Concrete
Authors: Ding Nan , Xie Jian Guang , Liang Lei Lei , Hu Ye , Xiao He , Wang Ya Jun
Published: April 2013

A new kind of infrared powder has been prepared to enhance the thermal radiation properties of the lower-heat-storage asphalt concrete. Tests have determined the most suitable ratio of four kinds of transition metal oxides in CM infrared powder, adjusted the sintering process parameters to improve the infrared emissivity, investigated the grain-size effect on its emissivity, and evaluated the thermal radiation properties of the asphalt concrete. The results show that the adding of transition metal oxides can effectively improve the infrared property of CM powder in the wave band from 8μm to 14μm at 25°C. Each sintering process parameter has effect on the infrared emissivity in varying degrees. Besides, the emissivity of infrared powder increases with particle size decreases before the size approaches nanoscale. According to the best mixing proportion and the sintering process parameters adjusted, CM-β infrared powder with average particle size of 18μm is prepared, and its emissivity in the wave band from 8μm to 14μm is 0.044 higher than CM powder. The thermal radiation test shows that the surface temperature of the asphalt mortar mixed with CM-β powder is 3.96°C lower than the one with CM powder.
Annealing Study of Al-Mg Wrought Alloys Using Two Different Techniques and Estimation of the Activation Enthalpy of Migrating Defects
Authors: Attallah Ahmed G. , Abdel-Rahman M.A. , El-Sayed M. , Ibhraim A.A. , Aly S.A. , Badawi Emad A.
Published: April 2013

The electrical resistivity and the corresponding mechanical properties (hardness) of some 5xxx Al-Mg alloy processed by plastic deformation were investigated. Plastic deformation was performed at room temperature. Isothermal annealing produced a significant change in both the electrical and mechanical properties of the samples. As the annealing time was increased, the resistivity and hardness up to full recovery. The activation enthalpy of migration of defects was determined, was found to be 0.234±0.06 eV, 0.218±0.049 eV, 0.316±0.016 eV 0.232±0.012 eV for 5005, 5251, 5052 and 5754 alloys, respectively.
Robot-Based Incremental Sheet Metal Forming – Increasing the Geometrical Complexity and Accuracy
Authors: Buff Bolko , Magnus Christian , Zhu Jun Hong , Meier Horst
Published: April 2013

The industrial application of incremental sheet metal forming is still limited by certain constraints, e.g. low geometrical accuracy and geometrical complexity. In order to overcome these constraints, this paper presents two approaches which have been carried out within the research project Development of a robot-based dieless incremental sheet metal forming process funded by the German Research Foundation (DFG). The first approach increases the geometrical accuracy by adding an addendum stabilization surface. As neither a partial nor a full die is used in this universal concept, there is a larger influence of the free compliant sheet area surrounding the formed part of the geometry. Thus the sheet shifts away from the forming tool more easily, which often results in a less accurate forming. The addendum stabilization surface reinforces this free sheet area. Experiments have proven this to be as good as a partial die. Especially the subsequent deformation resulting from the interaction of differently shaped elements causes geometrical deviations which are limiting the scope of formable parts. The second approach is based on the subsequent forming of elements belonging to the original geometry, which helps to increase the geometrical accuracy as well as the geometrical complexity. Thus the basic geometry is formed in a first step. Afterwards, further elements are formed subsequently, while the adjacent areas are supported by a peripheral supporting tool which prevents their deformation.
Dynamic Strength Behaviour of Punch Connections in Shear Cutting Processes
Authors: Mair Josef , Canti Robert , Golle Roland , Volk Wolfram , Hoffmann Hartmut
Published: April 2013

Two basic types of load for the tool active elements can be distinguished for the shear cutting process of sheet metal. For high strength, brittle materials, the stamping punch will be exposed to distinctive oscillating axial dynamic loads as a result of abrupt released potential energy, from the tool active elements, the blanking tool and the stamping press, caused by a sudden cracking of the sheet. In contrast, when shear cutting ductile materials, sheet metal will be drawn into the die clearance and the resulting friction between the punch and the cut surface can cause high forces when pulling the punch out of the hole. When using punches featuring a complex cutting peripheral form, - not available as a standard part - it is necessary to decide between head and shank of the punch manufactured out of one part or a shaft without head, which is usually cheaper and can be manufactured by electro-erosive wire-cutting. In the second case, a linking element must be accepted, transferring the load transmission between shaft and tool. This linking element, realized by a form lock or traction, can be the reason for premature failure of the punch. The two described cases of load, in combination with lacking knowledge of the real load on the link as well as eligibility of different punch linking types for each case of loading, cause unnecessary cost in tool manufacturing by oversizing or punch fracture. For this, solid punches as well as joined punches with dowelled or screwed heads have been compared in systematic tests. Brazed and bonded punch heads have been involved in the test series as cost-efficient alternatives to custom punches. Collaterally, characteristic values have been determined for each type of punch in static and dynamic measurements. Especially impact absorption and stiffness of the connection represent non-destructive measureable values allowing a comparison of stamping punches in terms of their dynamic fatigue limit.
Numerical Modeling of Electromagnetic Tube Expansion and Formability Assessment
Authors: Oliveira Inês , Teixeira Pedro , Lobo Gilberto , Reis Ana
Published: April 2013

In the present paper, an EMF numerical model has been developed following an uncoupled approach, being the Lorentz forces acting on the workpiece estimated by solving Maxwells equations and then transferred to solve the mechanical problem. For formability analysis, a fracture indicator based on the linear forming limit diagram was applied through the use of a post-processing tool developed by the authors. To illustrate the applicability of the implemented code in the fracture prediction, an example of electromagnetic tube expansion is presented. The corresponding numerical simulation is performed and its results are compared with experimental obtained from literature for a selected material.
Friction Stir Welding of Tailored Blanks of Aluminum and Magnesium Alloys
Authors: Bergmann Jean Pierre , Schürer René , Ritter Kevin
Published: April 2013

The following paper describes a feasibility study of butt joining friction stir welding between aluminum alloy AA6016 and magnesium alloys AZ91 and AM50. Because of the variety of inimitable properties according to lightweight design and constructions, the interest in aluminum and magnesium alloys is increasing in many fields of industry. Due to the low solubility of aluminum in magnesium and inverse, these alloys tend to the formation of intermetallic phases during the joining process. This leads to an increasing micro hardness within the seam, which should be avoided. By the use of joining methods with low process temperatures, the formation of intermetallic phases is reduced. According to this circumstance, friction stir welding is an excellent alternative to fusion welding techniques used to join this alloys. The main welding process variables were exposed in the studies of similar butt joints of Al/Al and Mg/Mg. These were examined in connection to their transferability to the dissimilar joints and tailored blanks. Furthermore, the influence of different tool geometry on seam quality was investigated. The effect of process variables (mainly welding speed and revolution speed) were correlated to the results of tensile strength test. The welded samples were assayed in the presence of intermetallic phases.
Advances in Monitoring Die Condition during Superplastic Forming
Authors: Zante Rémi C. , Knowles Craig
Published: April 2013

Superplastic forming of titanium is typically restricted to low volume, high value products due to the high costs inherent in the current process. Problems contributing to the high costs stem from the interactions that take place at the die/part interface and include; poor part surface finish due to the build-up of corrosion products on the die surface and part distortion due to adhesion at the die surface. This paper describes novel methods for the investigation of the build-up of corrosion products on the die using surface digitization tools with laboratory based simulations of the forming conditions and a novel method for monitoring, analyzing and quantifying the die surface condition in a production environment using a combination of thermal imaging techniques and image analysis.
Study of the Influence of the Artificial Ageing Temperature on the AA2024 Alloy Microstructure
Authors: Radutoiu Nicoleta , Alexis Joël , Lacroix Loïc , Abrudeanu Marioara , Petit Jacques Alain
Published: April 2013

For the last 30 years, AA2024 aluminum alloy was very used as structural material in the aerospace industry due to its low density and good mechanical strength. The phenomenon of precipitation hardening in aluminum alloys takes place at relatively low temperature and induces the precipitation of intermetallic particles composed of the main alloying elements i.e., copper and magnesium. The fundamental stage of the age-hardening process consists in the acceleration of the decomposition phenomenon of the supersaturated solid solution, resulting in the coarse intermetallic particle precipitation; stage where the mechanical properties reaches the maximum values, but at the cost of a low corrosion resistance. In this paper, the AA2024 alloy microstructure was studied during the over-ageing process. The over-ageing treatment (T7) is supposed to stabilize the microstructure and the mechanical properties to improve the corrosion resistance. The over-ageing treatment consists in a solution treatment at 495±5°C for 1 hour, quenched into cold water and artificial aged. Three different artificial ageing temperatures were studied: 150°C, 175°C and 190°C. The mechanical properties modifications were followed by Vickers macrohardness measurements. The treatment duration for each temperature (36 days for 150°C, 50 hrs for 175°C and 24 hrs for 190°C) was determined by a given macrohardness reduction. To characterize the over-aged AA2024 alloy microstructure, a statistical analysis of the surface fraction and surface density of intermetallic particles was made. The intermetallic particle dimension distribution, depending on the over-ageing temperature, was also observed. To do so, scanning electron microscope observations were carried out and image analyses were performed from backscattered electron images.