bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study of Acrylic Acid-co-Polyethylene Glycol Allyl Ether as Cement Retarder Over a Broad Temperature Range
Authors: Brandl Andreas 
Published: August 2016

Abstract
In adjusting the correct thickening time of a cement slurry for reliable placement into a wellbore at given bottomhole circulation temperature (BHCT), an engineer must select a suitable retarder with optimum dosage and compatibility for the cementing system. The BHCT for each drilled section of a wellbore can vary, in extreme cases, from below freezing temperatures to 500 °F or even higher. In this case, each of several cementing jobs in a well might require a different retarder, which has drawbacks for logistics, operations, and laboratory testing. Therefore it would be advantageous to identify one cement retarder that is effective over a broad temperature range.
The performance of acrylic acid-co-polyethylene glycol allyl ether (AA-co-PEGAE) as a retarder was evaluated in API cement slurries for various loadings, temperatures, and densities. A model of the working mechanism of AA-co-PEGAE as a cement retarder is proposed. Cement testing procedures, lab test results, logistical and operational aspects, and case histories from East Texas and the Gulf of Mexico are presented and discussed.
The study demonstrates that AA-co-PEGAE is applicable as retarder in API cement slurries from ambient temperatures to at least 550 °F without negatively affecting fluid loss, free fluid control, right-angle setting, or hard set of cement. Slight deviations in AA-co-PEGAE dosages did not cause tremendous changes in thickening times, and the retarder response was fairly predictable. The response of AA-co-PEGAE was even found to be linear and insensitive to BHCT up to 200 °F. Chelating of calcium ions seems to be the primary retardation mechanism of AA-co-PEGAE in cement slurries.
The findings serve to improve understanding the mode of action of cement retarders with the goal to optimize slurry designs and admixture compatibility. The robust and predictable characteristics of AA-co-PEGAE over a broad temperature range contribute to more reliable and safe placement of cement slurries.
Study on Corrosion Mechanism of Sour Gas to Cement Stone
Authors: Zeng Yijin , Zhou Shiming 
Published: August 2016

Abstract
Many researchers have conducted study on mechanism of single phase of CO2 or H2S corrosion to cement stone, but the corrosion mechanism of CO2/H2S mixture to cement is seldom involved. The fact is that most of sour gas fields contain CO2/H2S mixture, for example, Puguang gas reservoir in China contains H2S and CO2 as high as 15% and 8% by volume. In this paper, test methods are established under bottomhole condition of Puguang gas reservoir, changes of compressive strength and permeability of corroded cement stone samples by H2S/CO2 mixture are evaluated to study corrosion mechanism of CO2/H2S mixture to cement stone.
Slurry is prepared according to API Spec10B and poured into test mold and cured in HTHP cell for 24 hours. The half of set samples are removed from molds and numbered and putted into the corroding chamber and cured for 21 days, then seal the chamber and inject CO2/H2S mixture and apply heat and pressure according to required temperature and CO2/H2S partial pressure. The rest are cured in HTHP cell as comparative samples. The temperature and pressure in the chamber keep constant during the test.
Compressive strength and permeability cement stone samples were tested to probe the changes before and after corrosion. Microstructure and corroded products of samples were observed by SEM and XRD to investigate changes before and after corrosion.
Result shows the corroded products of CO2/H2S mixture to cement are similar to those by single-component H2S or CO2 gas, except that the amount of expansive crystal produced by H2S is reduced. Combination of H2S and CO2 accelerates the corrosion progress, the recession of strengthen and permeability is more serious than that of single H2S or CO2, but CO2 dominates the whole corrosion process after the long duration. Fly ash and Clay have benefits to resist corrosion of combination of H2S and CO2.
The CO2/H2S mixture will bring serious corrosion on cement ring in wet environments, and damage its' seal ability. The higher the temperature, the more severe of the recession of strengthen and permeability, which presents a complete opposite rule with corrosion by H2S or CO2. The composition of cement slurry is the predominant factor affecting cement corrosion resistance. The introduction of Latex and Fly ash and clay into system will reduce the alkalinity in the cement slurry system and improves the corrosion resistance. The hydration products are crystallized after corrosion under combination of H2S and CO2, and loose arrangement of those crystals is the reason of strength decline and permeability rise.
Application of High Density Non-Aqueous Fluid Technology in the Efficient Development and Production of Super-Deep Complicated Formations in the Tian Mountain Front Block
Authors: Da Yin , Long Li , Xianguang Xu , Jianhua Wang , Lei Li , Rongchao Cheng , Shuang Li , Haijun Yang 
Published: August 2016

Abstract
The Tian Mountain Front Block in North Border of Tarim Basin is very complicated, such as ultra-thick composite gypsum-salt formation, high pressured brine layer, ultra-high temperature hydrocarbon zone, fragmented formation widely distributed in this Block, and narrow mud density window, so abnormal high pressure formations and high collapse stress formations are widely distributed in the Tian Mountain Front Block, which brings enormous challenge to drilling engineering.
Traditionally the oil-gas wells in this area are drilled using high-density water-based drilling fluids (WBM), however, significant non-productive time (NPT) and low rate of penetration (ROP) are easily encountered in dealing with borehole instability, stuck pipe, high pressured brine influx and downhole losses in the process of drilling the gypsum-salt formations or fractured pay zones. To meet the need of drilling operation in the Tian Mountain Front Block, a kind of high-temperature high-density non-aqueous fluids (NAF) is used in drilling engineering. So far, NAF system has been recommended to run for 56 wells in this Block, achieving quite good results.
Ultra-high density NAF system (&gt;2.50 g/cm3) as well as corresponding well killing fluid (up to 2.85 g/cm3) has been developed, and successfully applied to drill through the gypsum-salt formations of six wells in KES 9 Block, and wellbore stability as well as regular hole diameter could be achieved.
This paper presents a study on the successful application of NAF in the Tian Mountain Front Block, and evaluates the potential technical benefits that this NAF technology might provide to petroleum development and production.
Work-to-family spillover: Gender differences in Hungary
Authors: Radó Márta , Nagy Beáta , Király Gábor 
Published: August 2016

It is crucial to understand the role that labor market positions might play in creating gender differences in work–life balance. One theoretical approach to understanding this relationship is the spillover theory. The spillover theory argues that an individual’s life domains are integrated; meaning that well-being can be transmitted between life domains. Based on data collected in Hungary in 2014, this paper shows that work-to-family spillover does not affect both genders the same way. The effect of work on family life tends to be more negative for women than for men. Two explanations have been formulated in order to understand this gender inequality. According to the findings of the analysis, gender is conditionally independent of spillover if financial status and flexibility of work are also incorporated into the analysis. This means that the relative disadvantage for women in terms of spillover can be attributed to their lower financial status and their relatively low access to flexible jobs. In other words, the gender inequalities in work-to-family spillover are deeply affected by individual labor market positions. The observation of the labor market’s effect on work–life balance is especially important in Hungary since Hungary has one of the least flexible labor arrangements in Europe. A marginal log-linear model, which is a method for categorical multivariate analysis, has been applied in this analysis.
Comparison of the Effects of Dialysis Methods (Haemodialysis vs Peritoneal Dialysis) on Diastolic Left Ventricular Function Dialysis Methods and Diastolic Function
Authors: Ellouali Fedoua , Berkchi Fatimazahra , Bayahia Rabia , Benamar Loubna , Cherti Mohammed 
Published: August 2016

Introduction:In patients undergoing chronic dialysis, several factors appear to influence the occurrence of cardiac abnormalities. The aim of our study was to evaluate the effects of two different methods of renal replacement therapy (chronic haemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD)) on left ventricular (LV) diastolic function.Patients and Methods:We enrolled 63 patients: 21 patients on CAPD, and 42 age- and gender-matched patients on HD; 35 patients were men (55.6%). Median of age was 46.4 (35-57) years. The median duration of renal replacement therapy was 3(2-5) years.Results:The two groups (HDvsPD) were similar concerning body mass index, dialysis duration and cardiovascular risk factors. The comparison of echocardiographic parameters showed statistically significant differences between two groups, regarding the presence of calcification, cardiac effusion, severely abnormal left ventricular hypertrophy(LVH) and the ratio of mitral velocity to early diastolic velocity of the mitral annulus (E/e’) >13 (p= 0.001, p= 0.003, p= 0.02, p= 0.004, respectively). In multivariate analysis, an E/e’>13 was higher in PD group ( OR= 5.8, CI [1.3-25.5], p=0.002).Conclusion:The method of dialysis seems to influence LV diastolic function. We observed a higher prevalence of diastolic LV dysfunction in the PD group. Echocardiographic follow up is essential as this could improve the management of cardiovascular complications in dialysis patients.
Acesso à justiça e direito à moradia: uma crítica à atuação do Judiciário nos processos de reintegração de posse no centro da cidade de São Paulo
Authors: Piovan Ana Carolina Cinoca 
Published: August 2016

No ano de 2014, os veículos de comunicação de massa apresentaram uma série de notícias sobre o cumprimento de mandados de reintegração de posse no centro da cidade de São Paulo. Essas notícias se justificam pelo forte impacto que a execução de uma ordem judicial pode promover no cotidiano da população local: fechamento de vias de tráfego intenso, utilização de bombas de gás e balas de borracha, ocupantes detidos, uma série de violações a direitos humanos, entre outras situações. Selecionamos 24 processos patrocinados pelo Centro Gaspar Garcia de Direitos Humanos a fim de analisar alguns aspectos do procedimento aplicado nas ações de reintegra- ção de posse. A pesquisa constata que o Poder Judiciário não tem tratado o conflito de forma equitativa e, ademais, não aborda a complexidade dos interesses envolvidos, deixando de considerar a natureza distributiva dos conflitos. Dessa forma, entende-se que o tratamento dirigido às ações de reintegração de posse acaba por retroalimentar os conflitos fundiários urbanos, uma vez que não traz soluções para a falta de moradia dos réus, tampouco impõe sanções aos possuidores de imóveis que não cumprem sua função social.
L’influence des CHSCT sur le bien-être des salariés et sur les accidents du travail. Une étude exploratoire
Authors: Bouville Gregor 
Published: August 2016

La présence d’une instance représentative du personnel en charge de la santé-sécurité au travail a été associée à un bien-être plus élevé des salariés dans la littérature, mais les mécanismes expliquant ce lien éventuel sont peu explorés. Notre cadre théorique s’appuie sur la « politique de production » de Burawoy (1985). Nos analyses mobilisent une méthode mixte de recherche. A partir des enquêtes nationales SUMER 2003 et 2010 qui regroupent, respectivement, 24 486 salariés et 47 982 salariés, nous examinons l’influence d’une instance représentative du personnel en charge de la santé-sécurité, le Comité d’Hygiène, de Sécurité et de Conditions de Travail (CHSCT), sur le bien-être et sur les accidents du travail et testons l’effet médiateur de la mise en œuvre de politiques de prévention des risques professionnels. Toutes choses étant égales par ailleurs, la présence d’un CHSCT est associée de manière significative à une durée plus faible des absences pour accident du travail via la mise en œuvre de politique de prévention des risques professionnels. Toutefois, les résultats montrent que la présence d’un CHSCT est associée à une probabilité plus faible d’être satisfait au travail et à une fréquence plus élevée des accidents du travail. Une enquête qualitative par observation directe complète cette analyse en montrant l’importance du degré de mobilisation des acteurs membres du CHSCT et de leur activisme de la connaissance (Hall et alii , 2006). Nous discutons ces résultats et leurs implications managériales.
Les mésaventures de la notion de dépression essentielle
Authors: Candilis-Huisman Drina 
Published: August 2016

Les nouvelles donnes de la procréation ont fait émerger de nouvelles formes de parentalité. Les personnes en situation de handicap sensoriel et moteur pour lesquelles la médecine contemporaine a donné l’espoir d’une vie meilleure sinon des possibilités de guérison, sont de plus en plus tentées par l’aventure du devenir parent. Comment et à quel prix ces personnes peuvent-elles exercer leur parentalité dans la plus grande autonomie possible ? Tel est l’objet de notre réflexion dans cet article.
Mères aveugles de bébés en souffrance
Authors: Ikiz Tevfika 
Published: August 2016

Dans cet article, l’auteur va présenter un matériel de cas concernant un patient qui a demandé une psychothérapie comme elle avait des difficultés à gérer ses problèmes au sein de sa famille. Cette vignette clinique révèle comment certaines mères ont des difficultés à être, comme dit Winnicott, « des mères dévouées ordinaires ». Elles sont « psychologiquement aveugles », en ce sens qu’elles ne sont pas capables psychologiquement de « voir » ou de sentir la souffrance de leurs bébés ou de leurs enfants. L’auteur traite le cas prenant en considération les concepts essentiels de Winnicott et de Bion à propos de comment le patient est privé de fonctionnement maternel.
Regards croisés sur une pathologie développementale d’origine génétique.
Authors: Potier Rémy , Putois Olivier , Lyonnet Stanislas , Weitzman Jonathan B. , Villa François 
Published: August 2016

On articule la médecine génétique, la pédopsychiatrie et la psychopathologie psychanalytique pour proposer une caractérisation psychanalytique de l’impact psychique d’une pathologie développementale d’origine génétique à fort versant neurologique, la microdélétion 22q11.2. Après une caractérisation de la microdélétion, et du style relationnel des enfants qui en sont affectés, nous soulignons d’abord l’effraction du narcissisme familial que représente cette atteinte, et les voies par lesquelles la contenir en travaillant l’annonce. Nous proposons ensuite d’intégrer à la prise en charge polyfactorielle un suivi psychothérapique de la famille, et de l’enfant, centrés sur l’étayage du mouvement interactif vers autrui que l’enfant manifeste spontanément. Nous indiquons quelques pistes suivant lesquelles déployer cet étayage.
Entre idéal dépassé et norme imposée : une représentation figée du père projetée dans une société en mutation
Authors: Essadek Aziz , Assous Adèle , Golse Bernard , Chabin-Fenlon Magali , Fernet-Lucas Corinne 
Published: August 2016

L’évolution des lois sur l’autorité paternelle puis parentale a généré une modification des fonctions du père. Mais qu’en est-il des représentations : ont-elles évolué dans la même temporalité ? Nous interrogerons les effets du passage d’une autorité strictement paternelle à parentale. Construire un nouveau modèle paternel semble être un projet périlleux, parfois inconfortable, pour les pères eux-mêmes, les mères mais également les institutions. L’article propose de montrer, à partir d’une historisation de l’évolution juridique de la place des pères dans la société et d’une étude populationnelle réalisée auprès de 796 mineurs au sein d’un service mettant en œuvre des mesures d’AEMO (Assistance Éducative en Milieu Ouvert), que la place des pères dans les institutions sociales est pensée à partir d’une représentation passée, ce qui impacte l’accompagnement et le travail de reparentalisation des pères.
Variability in Response to Bilateral Medial Rectus Recessions in Infantile Esotropia
Authors: Issaho Dayane Cristine , Wang Serena Xiaohong , de Freitas Denise , Weakley David Robert 
Published: August 2016

Purpose:
To evaluate factors associated with surgical success in bilateral medial rectus recessions in infantile esotropia.

Methods:
The results of 97 patients with infantile esotropia undergoing surgical correction from January 2010 through December 2013 at Children's Medical Center of Dallas were reviewed. Multivariate logistic regression analysis of risk factors for success and evaluation of the relationship of surgical responses to baseline characteristics were performed.

Results:

The authors achieved an overall success rate of 59% (57 of 97 patients) with one surgery. At the time of surgery, preoperative angle, refraction, amblyopia, and simultaneous inferior oblique surgery were not significantly related to success or failure. The mean dose response was 3.61 ± 1.45 prism diopters per millimeter of surgery and was modestly correlated only with the preoperative deviation (
r
2
= 0.32). Failure was associated with variability in dose-response, not inadequate or inconsistent with surgical dosing.

Conclusions:
Surgical success with bilateral medial rectus recessions in infantile esotropia is limited by the high variability in surgical dose-response.

[
J Pediatr Ophthalmol Strabismus
. 2016;53(5):305–310.]
Quantification of the impact of hydrology on agricultural production as a result of too dry, too wet or too saline conditions
Authors: Hack-ten Broeke Mirjam J. D. , Kroes Joop G. , Bartholomeus Ruud P. , van Dam Jos C. , de Wit Allard J. W. , Supit Iwan , Walvoort Dennis J. J. , van Bakel P. Jan T. , Ruijtenberg Rob 
Published: August 2016

Abstract. For calculating the effects of hydrological measures on agricultural production in the Netherlands a new comprehensive and climate proof method is being developed: WaterVision Agriculture (in Dutch: Waterwijzer Landbouw). End users have asked for a method that considers current and future climate, that can quantify the differences between years and also the effects of extreme weather events. Furthermore they would like a method that considers current farm management and that can distinguish three different causes of crop yield reduction: drought, saline conditions or too wet conditions causing oxygen shortage in the root zone. WaterVision Agriculture is based on the hydrological simulation model SWAP and the crop growth model WOFOST. SWAP simulates water transport in the unsaturated zone using meteorological data, boundary conditions (like groundwater level or drainage) and soil parameters. WOFOST simulates crop growth as a function of meteorological conditions and crop parameters. Using the combination of these process-based models we have derived a meta-model, i.e. a set of easily applicable simplified relations for assessing crop growth as a function of soil type and groundwater level. These relations are based on multiple model runs for at least 72 soil units and the possible groundwater regimes in the Netherlands. So far, we parameterized the model for the crops silage maize and grassland. For the assessment, the soil characteristics (soil water retention and hydraulic conductivity) are very important input parameters for all soil layers of these 72 soil units. These 72 soil units cover all soils in the Netherlands. This paper describes (i) the setup and examples of application of the process-based model SWAP-WOFOST, (ii) the development of the simplified relations based on this model and (iii) how WaterVision Agriculture can be used by farmers, regional government, water boards and others to assess crop yield reduction as a function of groundwater characteristics or as a function of the salt concentration in the root zone for the various soil types.
Due Diligence Driving the Success of Mergers and Acquisitions in Macedonia
Authors: Srbinoska Dushica Stevchevska 
Published: August 2016

The act of due diligence is of vital importance when considering the possibility to enter the Macedonian market through merger and/or acquisition transactions. In this paper, I discuss that due diligence helps reduce potential risks or even results with curtailing the transaction as most of the Letters of intent never come to life. Many Macedonian entities, both public and private, operate in an environment considerably different to the European Union economies, a fact that inspires many questions with potential investors, especially in those who come from the European Union. If proper preparation takes place, and the expectations and processes are duly taken into account, successful merger and/or acquisition can be conducted in the Republic of Macedonia in spite of facing numerous difficulties. Finally, I discuss that several suggestions/factors can maximize the chances of success, demonstrated with the example of due diligence process set-up prior to the one.Vip merger that marked the Macedonian communications industry in 2015.
Diagnosis and Outcome of Periosteal Chondrosarcoma in Two Cats
Authors: Thompson Elizabeth , Fauber Amy E. , Pool Roy R. 
Published: August 2016

ABSTRACTTwo cats, both over 10 yr old, were presented for evaluation of non-painful bony proliferations on the appendicular skeleton. These proliferations were identifiable via palpation. Radiographs showed a smooth, proliferative bony lesion of the distal femur (case 1) and tarsus (case 2) with mild soft tissue swelling. Surgical debulking with incomplete resection was performed in each cat. Subsequent histopathology resulted in a diagnosis of periosteal chondrosarcoma (PC). Although both cats have experienced local recurrence, both are still alive more than 2.5 yr after mass debulking. Periosteal chondrosarcoma is a differential diagnosis in proliferative cortical bony lesions near an articular surface in older cats. Partial resection of these masses can lead to an excellent quality of life, and proper diagnosis can avoid amputation or even euthanasia.
Hemothorax in Three Dogs with Intrathoracic Extracardiac Hemangiosarcoma
Authors: Rutherford Lynda , Stell Anneliese , Smith Ken , Kulendra Nicola 
Published: August 2016

ABSTRACT
Intrathoracic extracardiac hemangiosarcoma (HSA) is rare in dogs. This report describes three dogs with acute onset dyspnea due to hemorrhagic pleural effusion resulting from intrathoracic extracardiac masses, which were confirmed as HSA by histopathology. The dogs were stabilized with thoracocentesis and intravascular fluid resuscitation. Computed tomography identified intrathoracic masses, which were not originating from the heart or pulmonary parenchyma. Surgical exploration was performed in all cases. Case 1 was euthanized intraoperatively as the tumor could not be dissected from the aorta. In cases 2 and 3, hemostasis and resection of the tumors was successful. Case 2 was euthanized 1 mo after surgery and case 3 was alive at the time of writing, 5 mo postoperatively. Intrathoracic extracardiac HSA should be considered as a differential for nontraumatic hemothorax and surgical treatment can be palliative.