bluuebunny/crossref_metadata_2025 huggingface dataset:
From Cold to Hot Irradiated Gaseous Exoplanets: Fingerprints of Chemical Disequilibrium in Atmospheric Spectra
Authors: Molaverdikhani Karan , Henning Thomas , Mollière Paul
Published: October 2019

Almost all planetary atmospheres are affected by disequilibrium chemical processes. In this paper, we introduce our recently developed chemical kinetic model (ChemKM). We show that the results of our HD 189733b model are in good agreement with previously published results, except at the μbar regime, where molecular diffusion and photochemistry are the dominant processes. We thus recommend careful consideration of these processes when abundances at the top of the atmosphere are desired. We also propose a new metric for a quantitative measure of quenching levels. By applying this metric, we find that quenching pressure decreases with the effective temperature of planets, but it also varies significantly with other atmospheric parameters such as [Fe/H], log(g), and C/O. In addition, we find that the “methane valley,” a region between 800 and 1500 K where above a certain C/O threshold value a greater chance of CH4 detection is expected, still exists after including the vertical mixing. The first robust CH4 detection on an irradiated planet (HD 102195b) places this object within this region, supporting our prediction. We also investigate the detectability of disequilibrium spectral fingerprints by the James Webb Space Telescope and suggest focusing on the targets with T
eff between 1000 and 1800 K, orbiting around M dwarfs, and having low surface gravity but high metallicity and a C/O ratio value around unity. Finally, constructing Spitzer color maps suggests that the main two color populations are largely insensitive to the vertical mixing. Therefore, any deviation of observational points from these populations is likely due to the presence of clouds and not disequilibrium processes. However, some cold planets (T
eff < 900 K) with very low C/O ratios (<0.25) show significant deviations, making these planets interesting cases for further investigation.
Microlensing Optical Depth and Event Rate toward the Galactic Bulge from 8 yr of OGLE-IV Observations
Authors: Mróz Przemek , Udalski Andrzej , Skowron Jan , Szymański Michał K. , Soszyński Igor , Wyrzykowski Łukasz , Pietrukowicz Paweł , Kozłowski Szymon , Poleski Radosław , Ulaczyk Krzysztof , Rybicki Krzysztof , Iwanek Patryk
Published: October 2019

The number and properties of observed gravitational microlensing events depend on the distribution and kinematics of stars and other compact objects along the line of sight. In particular, precise measurements of the microlensing optical depth and event rate toward the Galactic bulge enable strict tests of competing models of the Milky Way. Previous estimates, based on samples of up to a few hundred events, gave larger values than expected from the Galactic models and were difficult to reconcile with other constraints on the Galactic structure. Here we used long-term photometric observations of the Galactic bulge by the Optical Gravitational Lensing Experiment (OGLE) to select a homogeneous sample of 8000 gravitational microlensing events. We created the largest and most accurate microlensing optical depth and event rate maps of the Galactic bulge. The new maps ease the tension between the previous measurements and Galactic models. They are consistent with some earlier calculations based on bright stars and are systematically ∼30% smaller than the other estimates based on “all-source” samples of microlensing events. The difference is caused by the careful estimation of the source star population. The new maps agree well with predictions based on the Besançon model of the Galaxy. Apart from testing the Milky Way models, our maps may have numerous other applications, such as the measurement of the initial mass function or constraining the dark matter content in the Milky Way center. The new maps will also inform the planning of future space-based microlensing experiments by revising the expected number of events.
Números complexos: um objeto de aprendizagem para ensinar e aprender
Authors: Scott Puhl Cassiano , Gianni de Lima Isolda
Published: September 2019

Este artigo apresenta um recorte de uma pesquisa de mestrado que criou e analisou um objeto de aprendizagem (OA) como recurso digital para o ensino de números complexos no Ensino Médio. O OA tem o objetivo de promover aprendizagem ativa e significativa, por meio de interações com aplicativos disponíveis virtualmente, desenvolvidos no Geogebra. Neste artigo, descreve-se o OA e apresenta-se o resultado da avaliação desse recurso. A avaliação seguiu um modelo proposto pelo Centro Interdisciplinar de Novas Tecnologias na Educação da Universidade Federal do Rio Grande do Sul (UFRGS), no qual são considerados aspectos pedagógicos e técnicos, utilizando uma escala para a avaliação de cada critério. Por fim, o OA mostrou bons indicativos, assim tem-se a expectativa de que o OA possa ser utilizado por outros professores.
Phylogenetic relationships and subgeneric classification of European Ephedrus species (Hymenoptera, Braconidae, Aphidiinae)
Authors: Kocić Korana , Petrović Andjeljko , Čkrkić Jelisaveta , Mitrović Milana , Tomanović Željko
Published: October 2019

In this study two molecular markers were used to establish taxonomic status and phylogenetic relationships ofEphedrussubgenera and species distributed in Europe. Fifteen of the nineteen currently known species have been analysed, representing three subgenera:BreviephedrusGärdenfors, 1986,LysephedrusStarý, 1958 andEphedrusHaliday, 1833. The results of analysis of COI and EF1α molecular markers and morphological studies did not support this classification. Three clades separated by the highest genetic distances reported for the subfamily Aphidiinae on intrageneric level.Ephedrus brevisis separated frompersicaeandplagiatorspecies groups with genetic distances of 19.6 % and 16.3 % respectively, while the distance betweenpersicaeandplagiatorgroups was 20.7 %. These results lead to the conclusion that the traditional subgeneric classification ofEphedrusneeds revision. Species frompersicaespecies group are raised to subgenus level asFovephedrusChen, 1986 andLysephedrussyn. nov.is assigned as a junior synonym of subgenus Ephedrus. Key for identification ofEphedrussubgenera is provided.Ephedrus hyadaphidisKocić & Tomanovićsp. nov.is described and several species are confirmed as valid species for the first time. Furthermore, two species are synonymised:E. dysaphidissyn. nov.as a junior synonym ofE. cerasicolaandE. blattnyisyn. nov.as a junior synonym ofE. plagiator.
Valeur(s) & management
Authors: Ledoux Laurent
Published: October 2019

Au-delà de leurs divergences « philosophiques », les principes des Entreprises libérées de Getz et des Organisations Opale de Laloux convergent et induisent une inversion fondamentale dans les pratiques de gestion : les « valeurs » y deviennent les objectifs ultimes tandis que la « valeur financière » devient l’une des conséquences du respect de ces valeurs. Le présent article vise avant tout à faire comprendre au lecteur ce que cette « inversion des valeurs » implique comme changements dans la philosophie de leadership adoptée par les leaders libérateurs ou Opale, et quelle préparation ou transformation intérieure cela requiert de leur part.
Valeur(s) & management
Authors: Raquin Michel
Published: October 2019

L’approche processus trouve sa source à travers la notion de transversalité, concept qui n’est pas nouveau. Il y a plus de 20 ans, René Demeestère ( Revue Française de Gestion , 1995) en explicitait les points essentiels : • prendre en compte le point de vue du client ; • rendre l’entreprise plus flexible et capable de s’adapter dans un univers incertain ; • maîtriser les performances (coûts – délais – qualité – ou toute autre caractéristique) permettant de se différencier des concurrents et de satisfaire les demandes d’un segment de clientèle. Si ce besoin de transversalité, à travers ses finalités, reste d’actualité, sa mise en œuvre ressort d’approches et de pratiques différentes. Le pilotage par les processus en est une. S’intéresser aux processus de son entreprise est pour certains dirigeants et devrait être pour d’autres une préoccupation majeure de nos jours. Mais toutes les potentialités qu’offre une approche processus n’ont pas été suffisamment affirmées, ce qui fait qu’un nombre certain de dirigeants considèrent encore celle-ci comme un gadget pour consultants ou technocrates, et non comme une manière pertinente d’atteindre leurs objectifs de performance, de créer de la valeur, des valeurs. Mais les évolutions sont réelles, et une récente enquête auprès de 25 dirigeants 1 , montre l’intérêt de cette approche. Fort de ce constat, montrons concrètement pourquoi c’est pour beaucoup d’organisations, entreprises ou autres institutions 2 une opportunité dans le contexte actuel caractérisé notamment par une concurrence exacerbée, des clients exigeants, une crise mondiale de grande ampleur, une volonté des actionnaires d’obtenir un fort rendement privilégiant le résultat à court terme au détriment de l’investissement. Ce mouvement d’organisation est de nature à apporter de la valeur pour les clients, les actionnaires, les acteurs de l’entreprise, pour elle-même, mais aussi pour répondre à des enjeux de RSE, au final d’être source de valeur pour toutes les parties prenantes concernées par les processus, avec des intensités différentes, selon la stratégie de l’organisation. Les développements qui suivent ressortent d’une application concrète au sein d’un établissement bancaire de taille nationale. Même si depuis la mise en place (fin 2004) de nombreuses évolutions ont été apportées, cette entreprise s’appuie toujours sur cette approche processus et en tire des avantages indéniables.
Valeur(s) & management
Authors: Berger Cédric
Published: October 2019

Devenir « cartographe de l’entreprise », une perspective ambitieuse qui a pour objectif d’amener les analystes de l’entreprise (urbanistes, architectes, analystes métier/de processus, consultants) à un nouveau mode de réflexion (démarche graphique) pour leur permettre de formaliser leur processus avec un langage pragmatique et opérationnel, tout en utilisant des logiciels bureautiques simples et performants, parfaitement adaptés à cet objectif. Mais il ne suffit pas de le devenir, il faut également que l’entreprise se l’approprie. Voici le challenge que nous vous proposons de relever à travers cette démarche.
Valeur(s) & management
Authors: Vinagre Anne
Published: October 2019

Ce chapitre a pour objectif de définir ce qu’est le lean manufacturing appliqué aux usines et à la logistique. Le lean manufacturing est une recherche d’excellence opérationnelle qui s’appuie sur la stabilité des organisations et des équipes. Sa finalité et objectif reste la satisfaction du client, en produisant au moindre coût, avec une qualité totale et des délais optimisés. En reprenant les concepts du Toyota Production System et à travers nos retours d’expérience, nous allons expliquer ce qu’est le lean manufacturing et en quoi cette démarche permet de créer de la valeur.
Valeur(s) & management
Authors: Santi Michel
Published: October 2019

Un client n’achète un produit que si celui-ci lui offre une marge d’acquisition, sa valeur perçue étant supérieure au prix qu’il doit payer pour l’obtenir. Partant de ce principe, l’auteur de ce chapitre développe une méthode structurée, complète et originale permettant à un acteur proposant une nouvelle offre de savoir analyser et calculer, relativement à son offre de comparaison, le différentiel de valeur client et, tenant compte de son différentiel de coût, le différentiel de prix qu’il peut ou doit pratiquer.
Construire des territoires rassurants : l’exemple du sport LGBT en région parisienne
Authors: Le Blanc Antoine
Published: October 2019

Il existe en France et notamment en région parisienne plusieurs dizaines d’associations sportives qui s’identifient comme gaies et lesbiennes, ou LGBT-friendly. Cet affichage constitue un marqueur social, discursif, et spatialisé, qui produit des territoires et des groupes. Les dynamiques de protection du groupe, par volonté de gestion d’un risque social, se combinent à des logiques inverses d’exposition, plus ou moins délibérées, liées à des objectifs de reconnaissance sociale. Ces communautés et ces territoires, qui recouvrent pour partie ce que les anglophones ont appelé des safe spaces , sont donc à géométrie variable. L’approche géographique de ces dynamiques repose sur des études notamment françaises et nord-américaines mais aussi sur des observations pendant huit années de participation et d’organisation d’événements liés aux associations LGBT, et sur l’étude notamment statistique de sources primaires variées. Cette méthode permet de mieux appréhender une réalité mouvante, difficile à délimiter, qui est celle de la perception individuelle et collective des discriminations et des territoires à risques. Cet article se concentre sur les caractéristiques des espaces produits dans le cadre du sport gay et lesbien : des territoires rassurants ?
Progressive Keratectasia After Laser in situ Keratomileusis
Authors: Rad Ahmad Salamat , Jabbarvand Mahmoud , Saifi Nader
Published: October 2019

ABSTRACT

PURPOSE: We describe ten patients who developed progressive keratectasia following laser in situ keratomileusis (LASIK) and identify possible factors that may lead to ectasia.

METHODS: In this retrospective study, we reviewed the files of 3,634 patients (6941 eyes) who had LASIK between March 2000 and April 2003. Ten patients (14 eyes, 0.2%) developed progressive keratectasia. We also evaluated consequent therapeutic measures and final visual status of these patients.

RESULTS: Patients were examined at a mean 24.9 ± 8.1 months after LASIK. Ectasia developed within a mean 14 ± 0.3 months after surgery. At baseline, mean keratometric power was 44.7 ± 2.30 D, mean corneal thickness was 516 ± 18.9 µm, and mean attempted correction was -10.85 ± 3.20 D. We found a statistically significant correlation between residual stromal thickness, attempted correction, and occurrence of progressive keratectasia. We also found that preexisting abnormal corneal topography was a risk factor for progressive keratectasia. Ultimately, most patients had reasonable visual acuity after penetrating keratoplasty.

CONCLUSION: Progressive keratectasia is a vision threatening complication of LASIK that may occur in previously healthy or diseased eyes. The most important risk factors are residual stromal thickness and preexisting abnormal corneal topography. Penetrating keratoplasty may be a reasonable therapeutic measure for severe cases of progressive keratectasia. [J Refract Surg 2004; 20(suppl):S718-S722]
Selective Laser Trabeculoplasty in Phakic and Pseudophakic Eyes
Authors: Werner Mark , Smith M. Fran , Doyle J. William
Published: October 2019

BACKGROUND AND OBJECTIVE
To evaluate the effect of pseudophakia on the success of selective laser trabeculoplasty in lowering intraocular pressure (IOP).
PATIENTS AND METHODS
In this retrospective, nonrandomized clinical trial, a chart review of all patients who underwent selective laser trabeculoplasty from September 2002 to June 2004 using a frequency-doubled Q-switched 532-nm Nd:YAG laser was performed. Changes in IOP and statistical significance were determined at each follow-up period. Average decrease in IOP and success rates for phakic and pseudophakic eyes were compared statistically at each time period.
RESULTS
In the phakic group, mean IOP decreased from 18.1 to 15.5 mm Hg (P < .0005) and mean glaucoma medication use decreased from 2.1 to 1.6 medications after 24 months of follow-up. In the pseudophakic group, mean IOP decreased from 18.3 to 15.2 mm Hg (P < .005) and mean glaucoma medication use decreased from 2.2 to 1.6 medications. Success rates ranged from 54% to 67% in the phakic group and 52% to 65% in the pseudophakic group. No statistically significant difference between phakic and pseudophakic eyes in decreased IOP or success rates was seen at any time point (P > .05). No significant complications occurred in either group.
CONCLUSIONS
Selective laser trabeculoplasty is effective in lowering IOP in both phakic and pseudophakic patients.
[Ophthalmic Surg Lasers Imaging 2007;38:182-188.]
AUTHORS
From the Department of Ophthalmology, University of Florida, Gainesville, Florida.Accepted for publication January 10, 2007.
Presented in part at the Annual Meeting of the American Academy of Ophthalmology, New Orleans, Louisiana, October 23-26, 2004.
Supported in part by an unrestricted departmental grant from Research to Prevent Blindness, Inc., New York, New York.
Address correspondence to J. William Doyle, MD, PhD, University of Florida, Department of Ophthalmology, 1600 SW Archer Rd., Gainesville, FL 32610.
Adjustable Suture Surgery for Correction of Various Types of Strabismus
Authors: Ögüt Mehdi Süha , Onal Sumru
Published: October 2019

BACKGROUND AND OBJECTIVE
This study was conducted to analyze the efficacy of the adjustable suture technique for correction of strabismus in patients with different types of strabismus.PATIENTS AND METHODS
This was an observational case series of patients who underwent the adjustable suture technique for correction of strabismus. A total of 33 adult patients (16 males and 17 females) with a minimum postoperative follow-up period of 6 months were included in the study. Patients were analyzed in three groups (patients with exotropia, esotropia, and vertical deviations). Success criteria determined were percentage change in the angle of deviation for far and near fixation, need for reoperation, and relief of diplopia. RESULTS The median percentage change in the angle of deviation for far and near fixation was 86.60% and 84%, 92.50% and 94.44%, and 100% and 100% in the exotropia, esotropia, and vertical deviation groups, respectively. There was no need for reoperation, and postoperative adjustment performed 24 hours after surgery was needed in 30.3% of patients due to diplopia. CONCLUSIONS The adjustable suture technique seems to be an effective method in the correction of various types of strabismus. [Ophthalmic Surg Lasers Imaging 2007;38:196-202.] AUTHORS From Marmara University, School of Medicine, Department of Ophthalmology, Istanbul, Turkey. Accepted for publication May 9, 2006. Presented in part as a poster at the 29th Meeting of the European Strabismological Association, Izmir, Turkey, June 1-4, 2004. Address correspondence to Sumru Onal, MD, Altunizade Mah., Okulcikmazi Sok. No: 11/5, 34660 Üsküdar, Istanbul, Turkey.
Intravitreal Triamcinolone Acetonide Injection in CRVO Associated With Wegener’s Granulomatosis
Authors: Arikan Gul , Saatci A. Osman , Biberoglu Kadir , Kupelioglu Ali
Published: October 2019

A 33-year-old man developed unilateral non-ischemic central retinal vein occlusion associated with systemic Wegener’s granulomatosis. Four milligrams of triamcinolone acetonide was injected intravitreally twice 6 months apart in conjunction with ongoing systemic immunosuppressive therapy. No change was made in the systemic immunosuppressive regimen. Wegener’s granulomatosis should be considered in the differential diagnosis of central retinal vein occlusion in the young age group and intravitreal triamcinolone acetonide is a good adjunct to systemic immunosuppressive therapy that eliminates the need for modifying the systemic treatment regimen. [Ophthalmic Surg Laser Imaging 2007;38:229-232.] AUTHORS From the Department of Ophthalmology (GA, AOS); the Department of Internal Medicine (KB); and the Department of Pathology (AK), Dokuz Eylul University, School of Medicine, Izmir, Turkey. Accepted for publication February 9, 2007. Address correspondence to A. Osman Saatci, MD, Mustafa Kemal Sahil Bulvari, No: 73, A Blok, Daire 9, Narlidere, Izmir 35320, Turkey.
Pheochromocytoma Presenting With Bithalamic Infarction, Dementia, and Increased Intraocular Pressure
Authors: Kutluhan Süleyman , Kilbas Serkan , Demirci Serpil , Çekiç Osman , Bardak Yavuz , Akhan Galip
Published: October 2019

The authors describe a case of pheochromocytoma presenting with bithalamic infarction, dementia, and elevated intraocular pressure. The patient received glaucoma treatment to suppress high intraocular pressure in addition to antihypertensive and antidiabetic medication for his complaints. Bilateral fundus examination and visual field defects revealed glaucoma-like changes. Adrenelectomy improved all complaints and all medications were stopped. Intraocular pressure and visual field changes improved. Pheochromocytoma presenting with bithalamic infarction, dementia, and increased IOP in the same patient is unusual. Adrenelectomy can improve dementia, increased IOP, and glaucoma-like changes in such cases. [Ophthalmic Surg Lasers Imaging 2007;38:245-247.] AUTHORS From the Department of Neurology (S. Kutluhan, S. Kilbas, SD, GA); and the Department of Ophthalmology (OÇ, YB), Süleyman Demirel University Medical School, Isparta, Turkey. Accepted for publication January 20, 2007. Address correspondence to Yavuz Bardak, MD, Department of Ophthalmology, Süleyman Demirel University Medical School, Çünür, Isparta, 32260 Turkey.
Postoperative Complications Associated With 25-Gauge Pars Plana Vitrectomy
Authors: Gupta Omesh P. , Weichel Eric D. , Regillo Carl D. , Fineman Mitchell S. , Kaiser Richard S. , Ho Allen C. , McNamara J. Arch , Vander James F.
Published: October 2019

BACKGROUND AND OBJECTIVE To report postoperative complications in eyes undergoing 25-gauge pars plana vitrectomy (PPV). PATIENTS AND METHODS Seventy consecutive eyes that underwent 25-gauge PPV for various indications, including epiretinal membrane, non-clearing vitreous hemorrhage, and idiopathic macular hole, and had a minimum follow-up of 12 weeks were reviewed retrospectively. Main outcome measures included bestcorrected Snellen visual acuity, intraocular pressure (IOP), intraoperative complications, and postoperative complications. RESULTS The mean visual acuity improved from 20/368 preoperatively to 20/105 postoperatively (P <.00005). Intraoperative complications included retinal tears in 2 eyes (2.9%). Postoperative complications included cataract progression in 17 eyes (42.5%), cystoid macular edema exacerbation in 5 eyes (7.1%), and retinal detachment in 1 eye (1.4%). Postoperative day 1 IOP was statistically lower than preoperative IOP in fluid-filled eyes (P = .031) but not in eyes filled with intravitreal air (P = .30) or gas (P = .52). Sclerotomy sutures were required intraoperatively in 5 eyes (7.1 %) and postoperative day 1 hypotony was noted in 4 eyes (5.7%). All of these complications were noted in fluid-filled eyes except for one case of postoperative day 1 hypotony with gas tamponade. CONCLUSIONS Intraoperative and postoperative complications were rare in this series of 25-gauge PPV. Postoperative cataract progression and hypotony were the most common complications. Fluid-filled eyes appear to have a higher risk of wound leakage and postoperative hypotony after 25-gauge PPV than eyes with air or gas tamponade. [Ophthalmic Surg Lasers Imaging 2007;38:270- 275.] AUTHORS From the Retina Service (OPG, CDR, MSF, RSK, ACH, JAM, JFV), Wills Eye at Thomas Jefferson University, Philadelphia, Pennsylvania; and the Department of Ophthalmology (EDW), Walter Reed Army Medical Center, Washington, DC. Accepted for publication April 20, 2007. Funded in part by the Eye Research Institute and Wills Eye Retina Service, Philadelphia, Pennsylvania. Presented in part at the Annual Retina Society Meeting, Del Coronado, California, September 14-18, 2005, and the Association for Research in Vision and Ophthalmology, Annual Meeting, Ft. Lauderdale, Florida, April 30-May 4, 2006. Address correspondence to Carl D. Regillo, MD, Wills Eye Institute, 840 Walnut Street, Suite 1020, Philadelphia, PA 19107.
Combined 5-Fluorouracil, Low-Molecular–Weight Heparin, and Silicone Oil in the Management of Complicated Retinal Detachment With Proliferative Vitreoretinopathy Grade C
Authors: Garcia Reinaldo A. , Sanchez Juan G. , Arevalo J. Fernando
Published: October 2019

BACKGROUND AND OBJECTIVE
To determine whether combined 5-fluorouracil (5-FU) and low-molecular–weight heparin (LMWH) could improve the outcome of vitreoretinal surgery with silicone oil for the management of complicated retinal detachment with proliferative vitreoretinopathy (PVR) grade C.
PATIENTS AND METHODS
In an interventional, controlled, nonrandomized clinical trial, 33 eyes with complicated retinal detachment and PVR underwent vitrectomy with silicone oil and perioperative infusion of 5-FU and LMWH (study group) and 31 eyes underwent vitrectomy with silicone oil without adjunctive medication (control group).
RESULTS
In the study group, 24 eyes (72.7%) had the retina attached and 9 had a retinal redetachment (27.3%) at 6 months. In the control group, 25 eyes (80.6%) had the retina attached and 6 eyes (19.4%) had a retinal redetachment at 6 months (chi-square: 0.53, P > .05). One-year postoperative data were available for 17 eyes in the study group and 19 eyes in the control group. Four eyes in each group (23.5% and 21%, respectively) developed retinal redetachment (chi-square: 0.03, P > .05).
CONCLUSIONS
Combined 5-FU and LMWH does not seem to improve the outcome of vitreoretinal surgery with silicone oil for the management of complicated retinal detachment with PVR grade C.
[Ophthalmic Surg Lasers Imaging 2007;38:276-282.]
AUTHORS
From the Retina and Vitreous Service, Clinica Oftalmológica Centro
Caracas, Caracas, Venezuela.
Accepted for publication October 20, 2006.
Presented in part at the American Academy of Ophthalmology Annual
Meeting, Chicago, Illinois, October 15-18, 2005.
Supported in part by the Arevalo-Coutinho Foundation for Research in
Ophthalmology (FACO), Caracas, Venezuela.
Address correspondence to J. Fernando Arevalo, MD, FACS, Clinica
Oftalmológica Centro Caracas, Edif. Centro Caracas PH-1, Av. Panteón, San
Bernardino, Caracas 1010, Venezuela.
Structural Abnormalities in the Levator Palpebrae Superioris Muscle in Patients With Congenital Blepharoptosis
Authors: Iljin Aleksandra , Zielinska Anna , Karasek Michal , Zielinski Andrzej , Omulecka Aleksandra
Published: October 2019

BACKGROUND AND OBJECTIVE
To evaluate structural and ultrastructural abnormalities of the levator palpebrae superioris (LPS) complex in patients with congenital blepharoptosis.
PATIENTS AND METHODS
Samples of the LPS complex were obtained from patients operated on for congenital blepharoptosis between 2000 and 2001 and studied under light microscopy (15 cases) and electron microscopy (9 cases).
RESULTS
Findings of light microscopy evaluation of the LPS complex correlated closely with the clinical grading of congenital blepharoptosis-hypoplasia, decreased number and varying diameter of muscle fibers, and fibrous tissue hyperplasia in the endomysium and perimysium. The Müller’s muscle preserved a normal appearance. Mild blepharoptosis revealed proliferation of collagen fibers on electron microscopy. Moderate blepharoptosis showed abnormal distribution of myofibrils and distortion of the tubular system and mitochondria in addition to the changes observed in mild blepharoptosis. Severe blepharoptosis showed mitochondria loss, cytoplasm thinning, and homogenous fiber areas in addition to the changes observed in mild and moderate blepharoptosis. CONCLUSIONS The clinical degree of severity of congenital blepharoptosis correlates positively with the degree of histopathologic changes in the levator palpebrae superioris muscle. [Ophthalmic Surg Lasers Imaging 2007;38:283-289.] AUTHORS From the Department of Plastic Surgery (AI, A. Zielinski); the Department of Neuroendocrinology (A. Zielinska, MK); and the Department of Pathomorphology (AO); Medical University of Lódz, Lódz, Poland. Accepted for publication December 10, 2006. Presented at the 9th Congress of the Polish Society of Plastic, Reconstructive and Aesthetic Surgery, in Warsaw, Poland, November 6-8, 2003. Part of the PhD dissertation of Aleksandra Iljin. Supported by grants 502-11-551(71)-1999 and 6 PO5C 029 21-2001 from the Ministry of Scientific Research and Information Technology, KBN (the State Committee for Scientific Research), Warsaw, Poland. Address correspondence to Aleksandra Iljin, MD, Department of Plastic Surgery, Medical University, ul. Kopcinskiego 22, 90-153 Lódz, Poland.
Pars Plana Ahmed Valve Implant and Vitrectomy in the Management of Neovascular Glaucoma
Authors: Faghihi Hooshang , Hajizadeh Fedra , Mohammadi Seyed-Farzad , Kadkhoda Arezoo , Peyman Gholam A. , Riazi-Esfahani Mohammad
Published: October 2019

BACKGROUND AND OBJECTIVE
To evaluate the efficacy and safety of the pars plana Ahmed glaucoma valve (New World Medical, Inc., Rancho Cucamonga, CA) implant combined with pars plana vitrectomy and panretinal photocoagulation for the management of neovascular glaucoma in patients with vitreous hemorrhage.
PATIENTS AND METHODS
The records of 18 eyes of 17 consecutive patients with neovascular glaucoma who had undergone pars plana vitrectomy and pars plana Ahmed valve implant were evaluated. The patients were observed for a mean time of 14.2 months (range, 6 to 28 months).
RESULTS
Mean preoperative intraocular pressure with oral and two or three topical antiglaucoma medications was 53.3 ± 10 mm Hg, and mean postoperative intraocular pressure without oral antiglaucoma medications was 16.3 ± 7.1 mm Hg (P < .0001) at the final visit. Overall success rate was 72.2%, defined as an intraocular pressure of 5 to 21 mm Hg with or without antiglaucoma medication. A postoperative hypertensive phase occurred in 7 patients (38.8%), of which all but one responded to medical therapy. Visual acuity was stabilized or improved in 77.7% of the eyes. There was one case of each of the following adverse events: mild vitreous cavity hemorrhage, hypotony, choroidal effusion, epiretinal membrane, corneal edema, and corneal ulcer. Two cases developed phthisis bulbi and lost light perception.
CONCLUSIONS
Pars plana vitrectomy and Ahmed valve implantation seems to be a viable surgical modality in the management of neovascular glaucoma and coexisting posterior segment pathology with a relatively low rate of serious permanent postoperative complications. [Ophthalmic Surg Lasers Imaging 2007;38:292- 300.]
AUTHORS
From the Eye Research Center (HF, FH, S-FM, AK, MR-E), Farabi
Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran; and the
Department of Ophthalmology (GAP), University of Arizona College of
Medicine, Tucson, Arizona.
Accepted for publication January 20, 2007.
Address correspondence to Gholam A. Peyman, MD, University of Arizona
College of Medicine, 655 N. Alvernon Way, Suite 108, Tucson, AZ 85711.
Recovery of Retinal Sensitivity After Transient Branch Retinal Artery Occlusion
Authors: Chalam K. V. , Agarwal Swati , Gupta Shailesh K. , Shah Gaurav Y.
Published: October 2019

A 66-year-old man with hypertension and branch retinal artery occlusion in the right eye with a visual acuity of 20/20 underwent sequential investigation with fluorescein angiography, optical coherence tomography, and microperimetry to evaluate the retinal sensitivity overlying an area of branch retinal artery occlusion. On follow-up, clinical resolution of retinal whitening and thickening was noted in the affected area. Optical coherence tomography revealed retinal thinning and inner retinal atrophy and microperimetry showed improvement in retinal sensitivity (11 db) overlying the area of branch retinal artery occlusion following resolution of retinal edema. [Ophthalmic Surg Lasers Imaging 2007;38:328-329.]
AUTHORS
From the Department of Ophthalmology, University of Florida, Jacksonville, Florida. Accepted for publication August 24, 2006. Address correspondence to K. V. Chalam, MD, PhD, University of Florida, 580 West 8th Street, Tower 2, 3rd Floor, Jacksonville, FL 32209.
Development of a Visiting Nursing Practice Self-Evaluation Scale: Assessment of Skill for Caring for Individuals With Behavioral and Psychological Symptoms of Dementia
Authors: Furuno Takaomi , Fujino Narumi , Fujimoto Yuji , Shirai Hiroko , Iwamoto Yuichi , Kamada Yuki , Yamaguchi Fumi
Published: October 2019

Behavioral and psychological symptoms of dementia (BPSD) continue to be a concern for our rapidly progressing aging society. Visiting nurses play an important role in community service for individuals with BPSD. The aim of the current study was to develop a visiting nursing practice self-evaluation scale for nurses who care for individuals with BPSD. The study was conducted in two phases. Semi-structured interviews were arranged to generate a draft scale that was further examined by an expert panel. A national survey was performed using the draft scale and two existing scales. Four factors and 22 items were obtained from exploratory factor analysis: (a) assessment and response factors related to BPSD, (b) interventions for reducing family care burdens, (c) nonpharmacological approaches, and (d) attitudes in trying to understand a patient's intentions. Reliability and validity were verified. The scale is useful for improving visiting nursing services for individuals with dementia. [
Research in Gerontological Nursing, 13
(1), 49–60.]
L’OPECST, trente ans d’évaluations des choix scientifiques et techniques au Parlement
Authors: Schultz Emilien , Dubois Michel
Published: October 2019

Introduction
Entretien avec Jean-Yves Le Déaut
Authors: Schultz Entretien recueilli par Emilien
Published: October 2019

Elu en 1986 dans la sixième circonscription de Meurthe-et-Moselle, Jean-Yves Le Déaut rejoint l’OPECST trois ans après sa création. Son engagement à l’Assemblée Nationale sur les enjeux scientifiques et technologiques le conduit à participer à l’évolution de cet Office.
Entretien avec Daniel Boy, CNRS
Authors: Schultz Emilien
Published: October 2019

En 1998, une conférence de citoyens est organisée sur demande du gouvernement autour de la question des Organismes Génétiquement Modifiés (OGM). Avec d’autres chercheurs en sciences sociales, Daniel Boy participe à l’organisation de cet événement qui, malgré son succès, ne sera pas reconduit par l’Office sur d’autres dossiers. Dans un entretien, il revient sur sa participation à cet événement et son avis sur l’Office.
Entretien avec la Sénatrice Marie-Christine Blandin
Authors: Schultz Emilien
Published: October 2019

Marie-Christine Blandin a connu l’OPECST à deux moments, séparés par une période durant laquelle ce dernier s’est transformé. Revenant sur son expérience, elle éclaire d’un regard acéré le fonctionnement de l’Office et la portée de son action au sein de l’activité parlementaire.
De la recherche agricole à la recherche en agronomie
Authors: Picard Didier
Published: October 2019

Dans la 2ème moitié du 20ème siècle, bien des efforts ont été déployés pour développer l’agriculture des pays francophones d’Afrique subsaharienne et de Madagascar (AFM). Ces efforts ont donné lieu à de nombreuses études critiques fondées notamment sur les résultats obtenus par les agricultures pratiquées, souvent jugés décevants. Dans ces régions, l’histoire des institutions et des structures de recherche, de la fin de la guerre de 1939-45 à nos jours, a également été très étudiée.
La génétique animale à l‘INRA
Authors: Sellier Pierre , Boichard Didier , Verrier Etienne
Published: October 2019

Une vingtaine d’espèces de mammifères ou d’oiseaux ont été domestiquées par l’homme à des fins d’élevage, à partir de l’époque néolithique. Les mots ‘génétique’, ‘gène’ et ‘génotype’ apparaissent dans les premières années du XXe siècle mais l’idée d’amélioration des animaux domestiques vient de beaucoup plus loin. Une forme de sélection empirique a été opérée par les premières communautés d’éleveurs, portant sur des caractères favorisant le processus de domestication lui-même, comme la docilité.
L’Institut de Mécanique des Fluides de Toulouse : 100 ans d’histoire
Authors: Charru François
Published: October 2019

L’institut de mécanique des fluides de Toulouse (IMFT), issu d’un laboratoire d’hydraulique créé en 1913, a célébré son centenaire en 2016 -- année marquant ses 50 ans d’association au CNRS.
Using Electron Beam to the Surface Heat Treatment of the Carbon Steels
Authors: Zara Adriana , Stoicănescu Maria , Giacomelli I.
Published: October 2019

Usage of electron beam shows the possibility of using its energy in different thermic processes. Among these, it is found the heating of mechanical products for the surface heat treatment. During the effectuated practical attempts, two types of construction steels were analyzed, namely carbon steel (OLC 45) and a low alloyed steel (41 Cr 4). The electron beam was applied on samples that were previous subjected to the heat treatment of improvement. The working parameters were chosen in order to obtain the heating of the superficial layer without melting. The samples treated as above were subjected to studies regarding the metallographic structures and the resulted hardness; also there were effectuated wear attempts. It was concluded that the use of electron beam in superficial heat treatment may also fit in practical terms.
Experimental Study, Modeling and Virtual Simulations of Car Part Realized from Composite Materials
Authors: Bolcu Alexandru , Dumitru Nicolae , Stănescu Marius Marinel , Bolcu Dumitru
Published: October 2019

In this paper we were looking for the production of a physical car body part (the left side fender of a Peugeot 206) made from composite materials based on epoxy resin and reinforced carbon fiber and kevlar woven. On the newly created fender model, a modal analysis has been made in order to determine its own frequencies on a certain direction, and an harmonic analysis with Finite Element Method.
Evaluation of Own Pulses in the Event of Free Vibrations of a Multiparker Type Parking Machine Lifting Machine
Authors: Radu Carmen Elisabeta , Rășchitor Edward , Tempea Iosif
Published: October 2019

To study the vibrations of a Multiparker lift lift model, use various models for the lifting mechanism. Calculate the first pulsation using the Dunkerley method. Behavior of the elevator to the action of an explosive task. We intend to evaluate the own pulsations in case of free vibrations of a lifting mechanism at an elevator within a multiparker parking lot. IT is absolutely necessary that the wave pulsation is different from the own pulsation of the studied system so as to avoid the resonance phenomenon leading to the system’s destruction. We shall establish a work algorithm using several models of the system as following: the model of the system with an autonomy degree; the calculation of the first own pulsations is used by the Dunkerley method; the model of the continuous system.A model is executed for the lifting mechanism of the Multiparker parking lot, considered as being composed of a continuous and homogeneous bar, embedded at the base, becoming a common unit with the mass M of the elevator. The own pulsations are determined in case of free vibrations for this bar.
A Three Dimensional Virtual System Used to Analyze the Normal and Prosthetic Joint of the Hip
Authors: Vaduva Razvan Cristian , Petrovici Ilaria Lorena , Tenovici Mihai Catalin , Tarnita Danut Nicolae , Popa Dragoş Laurenţiu , Rogoveanu Otilia , Capitanescu Bogdan
Published: October 2019

Treatment of hip pathology has evolved over the last two centuries, ranging from rudimentary surgical procedures to modern hip arthroplasty, with an explosion marked in the last 30 years, considered to be one of the most successful surgeries to date. Hip arthroplasty is a permanent challenge due to the desire to discover the "supreme prosthesis", for which competition is still open. Hip disorders requiring prosthesis show a change in articular morphology. Among the most common medical conditions that have as final therapeutic solution hip arthroplasty are: coxarthrosis, both primary and secondary, followed by traumatic conditions: femoral neck collapse and femoral neck pseudarthrosis, aseptic head necrosis femoral stage III, as well as rheumatic coxitis from rheumatoid arthritis, ankylosing spondylitis or juvenile art. Endoprosthetic arthroplasty can be defined as an intervention of reconstructive surgery with bone sacrifice and prosthetic replacement of the articular components. It is, in the end, an operation aimed at restoring joint mobility and normal functioning of the muscles, ligaments and other periarticular structures that control joint movement. The materials initially used (glass, metal, plastic) did not have the desired bone strength and integration capacity. It followed the development of cemented implants, obtaining different types of cement with better and better quality. Problems arising from cemented arthroplasty (decimation, involving prosthetic revision) have led to a parallel development of the design and materials used for uncured prostheses with the possibility of very good integration of prosthetic material into the bone, raising them to the top of preferences in recent years. Treatment of hip pathology has evolved over the last two centuries, ranging from rudimentary surgical procedures to modern hip arthroplasty, with an explosion marked in the last 30 years, considered to be one of the most successful surgeries to date. The purpose of this study was to obtain the three-dimensional models of the hip joint and the prosthesis for the use of these models for various analyzes and virtual experiments. At the end of the paper important conclusions were drawn based on the results obtained in the simulations using the finite element method.
The Potential of the Mehedinţi County to Transform Waste into Resources
Authors: Ghermec Christian , Ghermec Olimpia
Published: October 2019

Achieving Europe's sustainable development goals by 2030 is conditioned by the transition to the circular economy. Turning waste into resources is one of the key phases in driving this process. The paper presents the sectors in Mehedinţi County that are involved or have proposed long-term objectives in the field of waste.
Multiple Attribute Decision Making Methods for Modeling Global Air Pollution Level
Authors: Grecu Luminița
Published: October 2019

The aim of the paper is to present some aspects about how we can use multiple attribute decision making tools for modeling global air pollution level, an indicator which can be used to analyze and compare the air quality from different regions in order to establish their hierarchy according to this aspect. An indicator for the global air pollution level, obtained by applying SAW method is proposed in this paper. When applying multiple attribute decision making methods not only different methods can be used to solve the problem of interest, but different kind of tools within same method. In this paper we also make comparisons between different normalization techniques we can use, in order to see if and how they influence the proposed indicator and, therefore, the final hierarchy of the regions we want to rank according to it.
Logistic and Transportation Challenges in Education
Authors: Olei Bebe Adrian , Iacobici Răzvan Ionuț
Published: October 2019

This work presents some logistics and transportation challenges that were solved by 3 different student groups from 3 different European entities. These groups were: the STC Group, from The Netherlands, made of 12 students; the FHOO Group, from Austria, which comprised a number of 10 students and the IMST Group from Romania, made of 12 students. Each of the group had a specific task of finding the best logistic and transportation solution for each of their task. Also, they need to take into account several important parameters like air pollution problem, the shortest way of reaching to destination, the way of transport and others, which were decisive in choosing the right solution.
Management Criteria and Principles, Applicable in Education and Scientific Research
Authors: Tufeanu Daniela , Semenescu Augustin , Ioana Adrian
Published: October 2019

In the article we present certain criteria and management principles applicable to education and scientific research, in order to optimize these two important areas. We thoroughly presented management criteria such as: the methodological criterion, the economic criterion, the social criterion, the informational criterion, the organizational criterion, the functional criterion. Among the management principles we analyzed there are: the principle of the command unit, the principle of decision-making and the principle of the balance between centralization and decentralization.
Build Orientation Influence on some Mechanical Properties of 3D-Printed Polyamide Specimens
Authors: Nitoi Alexandra , Pop Mihai Alin , Peng Ting Ting , Bedő Tibor , Munteanu Sorin Ion , Ghiuta Ioana , Munteanu Daniel
Published: October 2019

Additive manufacturing [AM] is a type of production technology characterized by the additive nature of stacking and unifying individual layers, with the main advantage that parts with complex geometries can easily be obtained, compared to conventional production methods. Due to its working principle, i.e. stacking layers, obtained by melting and solidification, the mechanical characteristics of the built part might be influenced by the build orientation chosen for the specific part. The mechanical behavior, cyclic deformation and fatigue behaviors of additively manufactured metallic parts as compared to their counterparts obtained by conventional processing technologies was reported to be highly dependent on the build orientation. The aim of this study was to assess whether the build orientation will have an impact on the mechanical properties of parts built by Selective Laser Sintering, using polyamide powder as raw material. Samples were built at various inclination degrees, and were further tested in terms of bending, compressive, impact and hardness tests. It was observed that the build orientation has a significant effect on the mechanical properties of parts additively manufactured from polyamide, compared to the behavior presented on the technical sheet of the material, provided by the manufacturer. Keywords: additive manufacturing, mechanical properties, build orientation, Selective Laser Sintering
Serratus Anterior and Upper Trapezius Electromyographic Analysis of the Push-Up Plus Exercise: A Systematic Review and Meta-Analysis
Authors: Kang Fu-Jie , Ou Hsiang-Ling , Lin Kun-Ying , Lin Jiu-Jenq
Published: October 2019

Context

Whereas the serratus anterior (SA) and the upper trapezius (UT) work as a force couple for scapular motion, weakness of the SA and overactivation of the UT are often present in overhead athletes with shoulder dysfunction. Therefore, researchers addressing an intramuscular imbalance between the SA and UT have focused on finding exercises that target the weak SA and minimally activate the UT.

Objective

To compare the effectiveness of push-up plus (PUP) exercise variants based on the electromyographic (EMG) activity of the SA and UT.

Data Sources

A systematic search of PubMed and Scopus between January 1, 2000, and March 31, 2008.

Study Selection

Studies of PUP exercises that involved EMG analysis.

Data Extraction

We assessed study quality using the Critical Appraisal Skills Program. For the systematic analysis, the following data were extracted: (1) author, year, and study design; (2) participant characteristics; (3) type of PUP intervention; (4) EMG outcome measures; and (5) main results. For the meta-analysis, the EMG data of the SA and UT were calculated using the mean difference of EMG activity with a 95% confidence interval.

Data Synthesis

Based on 19 studies with 356 participants, different hand positions (the distance between the hands, shoulder-flexion angle, and elbow-flexion angle) and different lower extremity positions variably affected the activation of the SA and UT during the PUP exercise. Also, when participants performed the PUP on an unstable surface compared with a stable surface, UT activity increased 2.74% (95% confidence interval = 0.07%, 5.41%).

Conclusions

The standard PUP exercise elicited high EMG activity of the SA. Participants generated higher SA and lower UT EMG activity when they performed the PUP exercise on a stable surface in full elbow extension, with the hands placed shoulder-width apart, shoulder-flexion angles of 110° or 120°, and the ipsilateral lower extremity lifted.