bluuebunny/crossref_metadata_2025_split huggingface dataset:
« Partir, c’est souffrir »
Authors: Louis Matthieu 
Published: December 2019

De nombreuses trajectoires migratoires contemporaines en Afrique de l’Ouest sont comprises à travers le langage commun local en tant qu’« aventure ». L’analyse des expériences restituées par les discours d’acteurs se qualifiant eux-mêmes d’« aventuriers » révèle que la vie d’aventure engendre la perte d’une fraction de soi. Cet article donne à penser le sens de ce deuil identitaire invariablement ressenti, en montrant qu’il ouvre un espace ontologique de liberté au sein duquel l’aventurier se produit au monde par l’exercice de son autonomie. Dès lors se dévoile, au-delà de l’argument économique, l’un des fondements sémantiques et culturels des pratiques d’aventure qui insiste particulièrement sur la quête initiatique de soi et son cheminement intérieur et solitaire.
La dimension de l’intime dans la relation tatoueur-tatoué
Authors: Similowski Clara 
Published: December 2019

Cette note de recherche dévoile les spécificités de la relation clientèle du tatouage et ses rapports à l’intime. L’encrage comme rite de passage représente une intrusion dans l’intimité physique et sociale de l’individu. Ainsi, l’enjeu de la relation tatoueurtatoué est d’installer un climat de confiance propice aux négociations des modalités d’encrage. Pour ce faire, les professionnels aménagent l’espace des salons ainsi que leur décoration et ont recours à différentes stratégies d’approche. Celles-ci témoignent du jeu ambigu auquel se livre le tatoueur pour se donner une double image : celle de l’expert qui se conforme aux règlementations de sa profession et celle d’un artiste singulier et rebelle qui exerce une pratique marginale. La combinaison de ces deux aspects paradoxaux du tatoueur offre la confiance nécessaire à l’établissement de sa relation avec le client. Les projets d’encrage sont confrontés à des normes plus ou moins implicites selon le degré d’appartenance du client à la communauté des tatoués. Les négociations quant aux modalités d’encrage s’exercent à plusieurs niveaux. D’une part, au niveau du motif avec la recherche d’originalité et l’empreinte du tatoueur et, d’autre part, à celui de la séance d’encrage avec la gestion de la douleur et des postures. Enfin, les traces de la relation tatoueur-tatoué perdurent, au-delà de la séance d’encrage, à travers les implications quotidiennes du tatouage.
Des âmes ayant déjà vécu plusieurs vies. Réflexions sur les conséquences pédagogiques d’une conviction métaphysique à partir de la pensée de Rudolph Steiner
Authors: Husser Anne-Claire 
Published: December 2019

Formulées au tout début du XX e siècle et mises en œuvre à partir de 1919 avec la fondation de l’ école libre Waldorf de Stuttgart, les idées éducatives de Rudolph Steiner sont largement méconnues en France, où elles sont le plus souvent associées au mouvement de l’éducation nouvelle, aux côtés de Montessori ou de Freinet. Ce prisme de lecture escamote cependant la métaphysique qui fonde cette pédagogie et dont ne peuvent être tout à fait dissociées les pratiques qu’elle autorise. Cet article étudiera la conception steinerienne de l’enfant en prenant au sérieux son rapport avec l’anthroposophie. Tenir l’enfance pour une réincarnation, est-ce reconnaître en elle une sagesse spécifique, ou reconduire un projet d’assagissement du sujet de l’éducation ?
Innoxious Removal of Suction Drains
Authors: Yiannakopoulos Christos K , Kanellopoulos Anastassios D 
Published: December 2019

abstract
Suction drains are commonly used in orthopedic elective and trauma surgery; however, drain tube removal causes pain, discomfort, and anxiety. A method of drain tube removal is described in patients who underwent total hip replacement and in adolescents who underwent lower extremity surgery. Ten milliliters of lidocaine was injected through the skin wound around the drain tube. The efficiency of this practice was evaluated using a visual analog scale score in two patient groups. Pain during tube removal and pain on post-removal were significantly decreased in the study group compared to the placebo group. Using this technique drain tube removal was painless, comfortable, and safe.
Intraoperative Blood Management in Joint Replacement Surgery
Authors: Tenholder Mark , Cushner Fred D 
Published: December 2019

abstract
Interest is growing in blood conservation and avoidance of transfusion in patients undergoing orthopedic surgery, especially in the field of joint replacement. Several methods have proven successful in reducing intraoperative blood loss, which can translate into lessened allogeneic and autologous transfusion requirements. Available techniques include acute normovolemic hemodilution, hypotensive anesthesia, intraoperative blood salvage, specialized cautery, topical hemostatic agents, and pharmacologic agents given in the perioperative period. The greatest potential benefit arises in operations with greater expected blood loss or in special situations such as in patients with religious issues, bilateral joint replacement, coagulation disorders, or significant preoperative anemia.
Calculation and Correction of Secondary Translation Deformities and Secondary Length Deformities
Authors: Gladbach Bruno , Heijens Etienne , Pfeil Joachim , Paley Dror 
Published: December 2019

abstract
External fixation correction of angular deformities leads to secondary translation deformities when occurring around an axis located proximal or distal to the center of rotation of angulation (CORA); secondary length deformities result when correction occurs around an axis concave or convex to the CORA. With circular fixation, the hinge axis can be matched to the CORA. With monolateral fixation, the level of the hinge/angulator is not easily controlled. Axis of correction of angulation can be plotted graphically and secondary deformities calculated trigonometrically. Location of the hinge/angulator can be accurately planned and adjustments incorporated to compensate for expected secondary deformities.
Patterns of opioid use and treatment in a cohort of patients from the Anuradhapura district
Authors: Ellepola A. 
Published: December 2019

BackgroundOpioid dependence is a major mental health problem in Sri Lanka. Anuradhapura is a district with a significant prevalence of opioid (especially heroin) dependence. AimsTo describe the socio-demographic features, patterns of use and types of treatment adopted by persons abusing opioids presenting to psychiatry services in Anuradhapura, Sri Lanka. MethodsThis retrospective survey was conducted over three months using medical records of patients with opioid dependence who received treatment from psychiatry services in the government or private sector, in Anuradhapura. ResultsOf the participants using opioids, most (n=56, 96%), had co morbid substance use, with nicotine, cannabis, or alcohol. Patients spent a significant proportion of their income on substances. All the patients received pharmacological treatment for opioid withdrawal symptoms. The most distressing withdrawal symptoms were insomnia and body aches. During the three-month study period, 38 out of 58 patients (65%) had defaulted follow-up treatment. Most who dropped out had reported severe withdrawal symptoms on presentation and had a low level of education. Sixteen patients (27%) remained abstinent for the over 3 months. ConclusionsOpioid dependence is a significant problem presenting to psychiatry services in the Anuradhapura district. Similar to international findings, long-term engagement of patients in care-programs is a challenge. More effective alternative measures should be explored to help this group of patients.
Retired Teachers as Mentors in the American String Teachers Association Mentor Program
Authors: Berg Margaret H. , Conway Colleen M. 
Published: December 2019

Abstract
While there are precedents for retired teachers serving as mentors, there is little discussion of the unique needs and experiences of retired teacher mentors or early career teachers’ perceptions of retired teacher mentors. The purpose of this study was to describe the experiences of 3 mentor (retired teachers) and mentee (beginning teachers) matches within the American String Teachers Association Mentor Program. Research questions included: (a) How do participants describe the nature of the mentor/mentee interactions? (b) How do participants describe the perceived advantages of using retired teachers as mentors for early career string teachers? (c) How do participants describe the perceived challenges of using retired teachers as mentors for early career string teachers? and (d) What meanings do retired teachers draw from the experience of mentoring? Data were collected via individual and focus group interviews, email and audio communications, and email questionnaire. The focus of the mentor and mentee interactions included typical challenges faced by beginning teachers, with mentors using both instructive and facilitative mentoring approaches (Davis, 2006; Glickman, 2002; Helman, 2006). Retired teachers’ availability, relatively quick response to questions, willingness to initiate communication, perspectives based on lived experience, and knowledge of resources made them effective mentors. Retired teachers found challenges with digital mentoring and responding to current classroom challenges. Mentoring was a valuable experience for the retired teachers, as it fostered self-worth while also providing continuity between full-time teaching and retirement.
Wernicke Encephalopathy in Elderly Related to Severe Malnutrition
Authors: Javier Ros Forteza Francisco 
Published: December 2019

Wernicke encephalopathy (WE) is the main neurologic complication of thiamine deficiency. Thiamine is a cofactor for several key enzymes important in energy metabolism. WE is a little-recognised and underdiagnosed condition, and the prevalence in the elderly is unknown. The classic triad of WE includes encephalopathy, oculomotor dysfunction, and gait ataxia. Diagnosis is clinical, and early treatment with thiamine is fundamental in preventing coma and death. In the cases reported in the literature, the cause of WE was fasting or malnutrition in 10.2% of cases. WE may in some cases constitute a public health problem. Being the prevalence unknown, we alert clinicians to keep severe malnutrition in elderly as a form of precipitation of WE. We review the cases published in the literature.
Pancreatic Neoplasms With Acinar Differentiation: A Review of Pathologic and Molecular Features
Authors: Thompson Elizabeth D. , Wood Laura D. 
Published: December 2019

Context.—
Pancreatic acinar lesions encompass a broad spectrum of malignant tumors and benign reactive processes affecting both adults and children, with clinical, pathologic, and molecular features that are distinct from more common ductal neoplasms. Accurate morphologic diagnosis and molecular assessment of these uncommon neoplasms is critical for effective patient care.

Objective.—
To review the clinical, pathologic, and molecular features of pancreatic neoplasms with acinar differentiation, the most common of which is acinar cell carcinoma but which also includes mixed carcinomas with acinar components, cystic acinar lesions, and pancreatoblastoma.

Data Sources.—
We assessed the current primary literature, as well as recently updated diagnostic manuals.

Conclusions.—
Pancreatic acinar neoplasms are a morphologically and molecularly heterogeneous group of diseases that are characterized by acinar differentiation of at least a subset of the neoplastic cells, defined either morphologically (granular cytoplasm, single prominent nucleoli) or immunohistochemically. Squamoid nests are a key morphologic feature of pancreatoblastoma. Alterations in WNT signaling and chromosomal 11p loss are common molecular features of both acinar cell carcinoma and pancreatoblastoma. Targetable molecular alterations in acinar carcinoma include BRAF rearrangements and DNA repair defects, including mismatch repair deficiency and BRCA pathway defects. For practicing pathologists, morphologic recognition of such acinar neoplasms is critical, and in the future, molecular diagnostics to identify lesions susceptible to targeted therapy will likely form an important component of patient care.
FEATURES OF MOLECULAR AGGREGATION OF BLOCK COPOLYMER ON BASE OF STYRENE AND POLYETHYLENE GLYCOL IN SOLUTIONS
Authors: Kropacheva Olga I. , Vavilova Darya V. 
Published: December 2019

This article focuses on the study of behavior of macromolecules of block copolymer on the base of styrene and polyethylene glycol in toluene media. Unique property of block copolymers is the ability of chemical heterogeneous blocks to phase separation. This process leads to the formation of micelle similar structures in selective solvents. These aggregates have the core from soluble block and the micelles capsule from insoluble block. Similar structures (reverse micelles) would be used for the purpose of stabilization of metal organosols. In this work aggregative stable reverse micelles in such systems as "toluene - water" and "toluene - methanol" have been prepared. Block copolymer of styrene and polyethylene glycol was applied as stabilizer in solutions with polymer concentration from 2.5 g/ 100 ml to 1 g/ 100 ml. Block copolymer has been synthesized by means of isocyanate cure on the end hydroxyl groups. Its structure has been confirmed by differential calorimetry spectroscopy (DSC) method. Dimension of formed particles has been determined by methods of sedimental turbidimetry and dynamic light scattering (DLS). Existence of both individual macromolecules and molecular aggregates in initial solutions has been established by DLS method. It has been found that dimensional homogeneity of organosol particles enlarges with the increase in dispersed phase content to 10 mass. %. At that, the size of the micelles in presence methanol is less than in water presence. Particles size also depends on polymer concentration in solution. The sizes of micelles in both systems increase with increasing concentration of the block copolymer, and with an increase in the content of the dispersed phase, a gradual decrease in their sizes is observed. It was shown that the sedimentation turbidimetry method does not reflect the behavior of the copolymer molecules in solutions, which results in a large scatter of data on the determination of particle sizes of the organosol in the toluene-water system with a water content of less than 5 masses. % . Based on the data obtained, it is assumed that micelles stabilized by a block copolymer based on styrene and polyethylene glycol can be used to introduce metal particles into them, followed by the formation of a metal layer on a solid surface.
Sum Formulas for Generalized Fifth-Order Linear Recurrence Sequences
Authors: Soykan Yüksel 
Published: December 2019

In this paper, closed forms of the summation formulas for generalized Pentanacci numbers are presented. Then, some previous results are recovered as particular cases of the present results. As special cases, we give summation formulas of Pentanacci, Pentanacci-Lucas, fifth order Pell, fifth order Pell-Lucas, fifth order Jacobsthal and fifth order Jacobsthal-Lucas sequences. We present the proofs to indicate how these formulas, in general, were discovered. In fact, all the listed formulas of the special cases of of the main theorems may be proved by induction, but that method of proof gives no clue about their discovery.
Phosphorus Compounds
Authors: Gilmour Rodney 
Published: December 2019

AbstractPhosphorus compounds exhibit an enormous variety of chemical and physical properties as a result of the wide range in the oxidative states and coordination numbers for the phosphorus atom. The intermediate electronegativity of phosphorus also plays a role. Phosphorus oxides, halides, sulphides, hydrides (phosphines), nitrogen compounds, and metal phosphides, as well as organophosphorus compounds, are reviewed. Emphasis is placed on the commercially important phosphorus trichloride, phosphorus pentachloride, phosphorus pentasulfide, phosphorus (V) oxide, and phosphine. Structure and nomenclature of phosphorus compounds and their organic derivatives are presented. Properties of the PO, PS, PH, PC, and PX (X = halogen) bonds are given. The manufacture of the commercial phosphorus compounds is outlined. Phosphorus compounds are found in or used as intermediates for the manufacture of oil additives, heat‐transfer and hydraulic fluids, water‐treatment chemicals, catalysts, herbicides, flame retardants, pesticides, pharmaceuticals, semiconductors, and surfactants. Intermediates in the preparation of organophosphorus derivatives are reviewed.
Excited State Dynamics of a Self‐Doped Conjugated Polyelectrolyte
Authors: Tsokkou Demetra , Peterhans Lisa , Cao David Xi , Mai Cheng‐Kang , Bazan Guillermo C. , Nguyen Thuc‐Quyen , Banerji Natalie 
Published: December 2019

AbstractThe growing number of applications of doped organic semiconductors drives the development of highly conductive and stable materials. Lack of understanding about the formation and properties of mobile charges limits the ability to improve material design. Thus the largely unexplored photophysics of doped systems are addressed here to gain insights about the characteristics of doping‐induced polarons and their interactions with their surroundings. The study of the ultrafast optical processes in a self‐doped conjugated polyelectrolyte reveals that polarons not only affect their environment via Coulomb effects but also strongly couple electronically to nearby neutral sites. This is unambiguously demonstrated by the simultaneous depletion of both the neutral and polaronic transitions, as well as by correlated excited state dynamics, when either transition is targeted during ultrafast experiments. The results contrast with the conventional picture of localized intragap polaron states but agree with revised models for the optical transitions in doped organic materials, which predict a common ground level for polarons and neighboring neutral sites. Such delocalization of polarons into the frontier transport levels of their surroundings could enhance the electronic connectivity between doped and undoped sites, contributing to the formation of conductive charges.
Revealing the Interplay between Charge Transport, Luminescence Efficiency, and Morphology in Organic Light‐Emitting Diode Blends
Authors: Gao Mile , Lee Thomas , Burn Paul L. , Mark Alan E. , Pivrikas Almantas , Shaw Paul E. 
Published: December 2019

AbstractPhosphorescent emissive materials in organic light‐emitting diodes (OLEDs) manufactured using evaporation are usually blended with host materials at a concentration of 3–15 wt% to avoid concentration quenching of the luminescence. Here, experimental measurements of hole mobility and photoluminescence are related to the atomic level morphology of films created using atomistic nonequilibrium molecular dynamics simulations mimicking the evaporation process with similar guest concentrations as those used in operational test devices. For blends of fac‐tris[2‐phenylpyridinato‐C2,N]iridium(III) [Ir(ppy)3] in tris(4‐carbazoyl‐9‐ylphenyl)amine (TCTA), it is found that clustering of the Ir(ppy)3 (surface of the molecules within ≈0.4 nm) in the simulated films is directly relatable to the experimentally‐measured hole mobility. Films containing 1–10 wt% of Ir(ppy)3 in TCTA have a mobility of up to two orders of magnitude lower (≈10−6 cm2 V−1 s−1) than the neat TCTA film, which is consistent with the Ir(ppy)3 molecules acting as hole traps due to their smaller ionization potential. Comparison of the simulated film morphologies with the measured photoluminescence properties shows that for luminescence quenching to occur, the Ir(ppy)3 molecules have to have their ligands partially overlapping. Thus, the results show that the effect of guest interactions on charge transport and luminescence are markedly different for OLED light‐emitting layers.
Polysaccharide‐Peptide Cryogels for Multidrug‐Resistant‐Bacteria Infected Wound Healing and Hemostasis
Authors: Hou Sen , Liu Yuanyuan , Feng Fang , Zhou Jin , Feng Xinxing , Fan Yubo 
Published: December 2019

AbstractWound dressings that can simultaneously treat bacterial infections and various bleeding complications are highly desirable in clinics. Moreover, multidrug‐resistant (MDR) bacterial infection has posed another great challenge for clinical wound care, as there are fewer effective antimicrobial agents available for killing these bacteria. To meet the clinical need, serials of polysaccharide‐peptide cryogels have been developed with excellent antibacterial efficacy and hemostatic property. With glycol chitosan (GC) and ε‐poly lysine (EPL) as the major components, the cryogels yield significantly lower amounts of blood loss compared with commercially available hemostatic dressings. The incorporation of EPL significantly enhances the antibacterial activity including killing MDR bacteria capacity and prevents the bacterial infection of skin wounds. The cryogel treated wounds demonstrate significantly higher healing efficiency compared to the controlled MDR bacteria infected wounds. The GC‐EPL polysaccharide‐peptide cryogels may become competitive multifunctional wound dressings for bleeding control and bacteria‐infected wound healing.
Record High External Quantum Efficiency of 19.2% Achieved in Light‐Emitting Diodes of Colloidal Quantum Wells Enabled by Hot‐Injection Shell Growth
Authors: Liu Baiquan , Altintas Yemliha , Wang Lin , Shendre Sushant , Sharma Manoj , Sun Handong , Mutlugun Evren , Demir Hilmi Volkan 
Published: December 2019

AbstractColloidal quantum wells (CQWs) are regarded as a highly promising class of optoelectronic materials, thanks to their unique excitonic characteristics of high extinction coefficients and ultranarrow emission bandwidths. Although the exploration of CQWs in light‐emitting diodes (LEDs) is impressive, the performance of CQW‐LEDs lags far behind other types of soft‐material LEDs (e.g., organic LEDs, colloidal‐quantum‐dot LEDs, and perovskite LEDs). Herein, high‐efficiency CQW‐LEDs reaching close to the theoretical limit are reported. A key factor for this high performance is the exploitation of hot‐injection shell (HIS) growth of CQWs, which enables a near‐unity photoluminescence quantum yield (PLQY), reduces nonradiative channels, ensures smooth films, and enhances the stability. Remarkably, the PLQY remains 95% in solution and 87% in film despite rigorous cleaning. Through systematically understanding their shape‐, composition‐, and device‐engineering, the CQW‐LEDs using CdSe/Cd0.25Zn0.75S core/HIS CQWs exhibit a maximum external quantum efficiency of 19.2%. Additionally, a high luminance of 23 490 cd m−2, extremely saturated red color with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.715, 0.283), and stable emission are obtained. The findings indicate that HIS‐grown CQWs enable high‐performance solution‐processed LEDs, which may pave the path for future CQW‐based display and lighting technologies.