bluuebunny/crossref_metadata_2025_split huggingface dataset:
Flap-induced Refraction Change in LASIK After Penetrating Keratoplasty
Authors: Pereira Telma , Forseto Adriana S , Alberti Gustave Nosé , Nosé Walton 
Published: December 2018

ABSTRACT
PURPOSE: To further analyze the refractive and topographic changes occurring with microkeratome lamellar keratotomy and to investigate possible factors associated in eyes with previous penetrating keratoplasty (PK).
METHODS: The Hansatome microkeratome was used to create a lamellar corneal flap in 21 eyes of 19 patients after PK. The laser ablation was not performed in the first stage. Pre- and postoperative refractions and corneal topographies were compared to evaluate possible changes induced by the keratotomy.
RESULTS: Twenty-one eyes were analyzed in this study. Mean time between PK and lamellar keratotomy was 36.63±28.23 months (range: 12 to 120 months). No microkeratome-related flap complications occurred. Previous to the keratotomy, the mean spherical equivalent refraction was -4.26±3.41 diopters (D), mean refractive astigmatism was -4.71+2.27 D, and mean topographic astigmatism was 5.28±2.94 D. After keratotomy, eyes showed statistically significant changes in spherical equivalent refraction from preoperative values (P= .025), with 3 eyes showing changes >2.00 D. Average refractive and topographic astigmatism did not change significantly from before to after keratotomy. However, surgically induced astigmatism (SIA) calculated through vector analysis was >1.01 in 11 (52.4%) eyes. A statistically significant correlation was found between the SIA values and preoperative refractive astigmatism (P= .025).
CONCLUSIONS: Lamellar keratotomy as part of twostage LASIK in eyes with prior PK led to refractive changes that justify the use of this technique, especially in eyes with high degrees of preoperative astigmatism. [J Refract Surg. 2007;23:279-283.]
Prospective Evaluation of PermaVision Intracorneal Implants Using In Vivo Confocal Microscopy
Authors: Lindsey Sara S , McCulley James P , Cavanagh H Dwight , Verity Steven M , Bowman R Wayne , Petroll W Matthew 
Published: December 2018

ABSTRACT
PURPOSE: To report effects of the PermaVision intracorneal lens at the cellular level using in vivo confocal microscopy.
METHODS: Four eyes implanted with intracorneal lenses beneath an IntraLase flap for correction of hyperopia were evaluated preoperatively and 1 to 6 months postoperatively.
RESULTS: Intracorneal lenses were tolerated in three eyes with little or no haze observed clinically and good visual results. Minimal keratocyte activation was detected by confocal microscopy, and cell density was decreased posterior to the implants. Epithelial thinning was observed 1 month after implantation. Thickness stabilized by 6 months but remained thinner than baseline (33±2 µm vs 48±8 µm, P<.01). The fourth eye had a complicated course with early flap displacement followed by diffuse lamellar keratitis. Confocal microscopy revealed activated keratocytes throughout the anterior stroma. The implant was removed, and recovery was promising.
CONCLUSIONS: Implantation of intracorneal lenses can induce side effects of epithelial thinning, keratocyte loss, and keratocyte activation. [J Refract Surg. 2007;23:410-413.]
La Biblioteca Humana Migrante: uso del espacio público y resignificación del proceso migratorio
Authors: Micheletti Stefano , Vera Sandra , Cubillos Almendra Javiera 
Published: December 2018

El presente artículo aborda la experiencia innovadora que constituye la Biblioteca Humana Migrante, realizada por el colectivo MIGRA en Talca (Región del Maule, Chile). A partir de la recopilación de información primaria y secundaria, se propone entender cuáles son los discursos que dicha experiencia promueve y cuál es el significado que ella le atribuye a la ocupación del espacio público. Los resultados dan cuenta de una acción que desde la perspectiva de los “marcos de acción colectiva” denominaremos “micromovilización”, orientada a la construcción de significados integradores en el contexto del reciente flujo migratorio que vive la ciudad. Por otro lado, resulta evidente el intento de esta experiencia por democratizar y repolitizar el espacio público de una ciudad intermedia de carácter agrario. Se concibe este espacio urbano como un lugar donde es posible ejercer la ciudadanía y promover –a través de actos simples de encuentro entre personas que no se conocen– la deconstrucción de estigmas y prejuicios hacia las personas inmigrantes.
Subgroups of Sjögren’s syndrome patients categorised by serological profiles: clinical and immunological characteristics
Authors: Kontny Ewa , Lewandowska-Poluch Aleksandra , Chmielińska Magdalena , Olesińska Marzena 
Published: December 2018

ObjectivesSjögren’s syndrome (SS) is an autoimmune disease characterised by heterogeneous clinical presentation and presence of various autoantibodies – anti-SSA/Ro of diagnostic value, less specific anti-SSB/La and others. We searched for biomarker(s) and potential therapeutic target(s) of SS subsets that vary in their autoantibody profile.Material and methodsEighty-one patients with SS (70 female and 11 male) and 38 healthy volunteers (28 female and 10 male) were included in the study. Patients were categorised according to absence (group 1) or presence of anti-SSA/Ro antibody which occurred either alone (group 2) or together with anti-SSB/La (group 3). Clinical evaluation was performed, and presence of autoantibodies and concentrations of cytokines relevant to SS pathogenesis, i.e. a proliferation inducing ligand (APRIL), B-lymphocyte activating factor (BAFF), interleukin (IL) 4, IL-10, interferon  (IFN-) and thymic stromal lymphopoietin (TSLP), in sera were determined.ResultsFrequency of autoantibodies other than anti-SSA/Ro and anti-SSB/La, the number of autoantibody specificities and anti-nuclear antibody titres were higher in group 2 and/or 3 than in group 1 of SS patients. Moreover, SS patients of groups 2 and 3 developed disease symptoms at younger age, and more often had positive Schirmer’s test and skin lesions. In addition, serum concentrations of APRIL, but not other tested cytokines, were significantly higher in the patients of both groups 2 and 3 than those of group 1 and healthy volunteers.ConclusionsSjögren’s syndrome patients with signs of B-cell epitope spreading are characterised by early disease onset, more frequent xerophthalmia and skin involvement, and up-regulated serum APRIL level. We suggest that therapeutic neutralisation of APRIL may be beneficial for these patients.
La heroína romántica en la novela mexicana de finales del siglo XIX. Los casos de Clemencia, Ensalada de pollos, La rumba y Los parientes ricos
Authors: Bobadilla Encinas Gerardo Francisco 
Published: December 2018

La heroína romántica fue el detonador actancial y valorativo que recorre transversalmente (y unifica así) las diversas formulaciones novelescas en México durante el siglo XIX. Sus características y función permitieron a los narradores participar en los esfuerzos del campo cultural de las Bellas letras por mejorar las condiciones humanas y morales del modelo del mundo positivista que se implementaba.El presente trabajo busca documentar el surgimiento y presencia que tuvo la heroína romántica dentro de la tradición narrativa decimonona, lo que le permitió seguir siendo la protagonista indiscutible de las formulaciones novelescas costumbristas, realistas y naturalistas posteriores.
L’adoption d’un Drive par le client : une approche interactionniste par la socialisation organisationnelle et le rôle du personnel en contact
Authors: Henriquez Tatiana , Frisou Jean , Filser Marc 
Published: December 2018

Alors que le rôle du personnel de vente a été sensiblement réduit dans les plus récentes innovations de format des points de vente, cet article analyse sa place dans le processus d’apprentissage et d’adoption d’un Drive par les clients. L’étude qualitative réalisée met en évidence que ce processus est favorisé par l’interaction entre l’employé et le client. Cette interaction permet au client de développer sa socialisation organisationnelle au Drive et par là-même de renforcer son lien avec le point de vente, même dans ce contexte d’interaction minimale. Autrement dit, le facteur humain reste fondamental lors de l’apprentissage d’une innovation commerciale, même lorsque celle-ci intègre une composante digitale importante. En effet, à partir de l’analyse des entretiens menés auprès de 74 clients et non clients, il ressort que cette interaction permet au client de développer sa socialisation organisationnelle, qui contribue elle-même à l’adoption du nouveau format. De tels résultats permettent : (1) d’identifier les actions à conduire pour favoriser l’apprentissage et l’adoption de ce format de vente, et (2) plus généralement de mettre en évidence le rôle du personnel en contact dans la stratégie de création de valeur. Ils apportent en outre aux managers des éléments de réflexion, les incitant à soutenir, par des actions concrètes, les clients dans leurs efforts d’apprentissage.
A new counterintuitive training for adult amblyopia
Authors: Lunghi Claudia , Sframeli Angela T. , Lepri Antonio , Lepri Martina , Lisi Domenico , Sale Alessandro , Morrone Maria C. 
Published: December 2018

AbstractObjectivesThe aim of this study was to investigate whether short‐term inverse occlusion, combined with moderate physical exercise, could promote the recovery of visual acuity and stereopsis in a group of adult anisometropic amblyopes.MethodsTen adult anisometropic patients underwent six brief (2 h) training sessions over a period of 4 weeks. Each training session consisted in the occlusion of the amblyopic eye combined with physical exercise (intermittent cycling on a stationary bike). Visual acuity (measured with ETDRS charts), stereoacuity (measured with the TNO test), and sensory eye dominance (measured with binocular rivalry) were tested before and after each training session, as well as in follow‐up visits performed 1 month, 3 months, and 1 year after the end of the training.ResultsAfter six brief (2 h) training sessions, visual acuity improved in all 10 patients (0.15 ± 0.02 LogMar), and six of them also recovered stereopsis. The improvement was preserved for up to 1 year after training. A pilot experiment suggested that physical activity might play an important role for the recovery of visual acuity and stereopsis.ConclusionsOur results suggest a noninvasive training strategy for adult human amblyopia based on an inverse‐occlusion procedure combined with physical exercise.
Achieving 20% Efficiency for Low‐Temperature‐Processed Inverted Perovskite Solar Cells
Authors: Yang Daobin , Sano Takeshi , Yaguchi Yuma , Sun He , Sasabe Hisahiro , Kido Junji 
Published: December 2018

AbstractLow‐temperature‐processed inverted perovskite solar cells (PVSCs) attract increasing attention because they can be fabricated on both rigid and flexible substrates. For these devices, hole‐transporting layers (HTLs) play an important role in achieving efficient and stable inverted PVSCs by adjusting the anodic work function, hole extraction, and interfacial charge recombination. Here, the use of a low‐temperature (≤150 °C) solution‐processed ultrathin film of poly[(9,9‐dioctyl‐fluorenyl‐2,7‐diyl)‐co‐(4,4′‐(N‐(4‐secbutylphenyl) diphenylamine)] (TFB) is reported as an HTL in one‐step‐processed CH3NH3PbI3 (MAPbI3)‐based inverted PVSCs. The fabricated device exhibits power conversion efficiency (PCE) as high as 20.2% when measured under AM 1.5 G illumination. This PCE makes them one of the MAPbI3‐based inverted PVSCs that have the highest efficiency reported to date. Moreover, this inverted PVSC also shows good stability, which can retain 90% of its original efficiency after 30 days of storage in ambient air.
Ink Processing for Thermoelectric Materials and Power‐Generating Devices
Authors: Jo Seungki , Choo Seungjun , Kim Fredrick , Heo Seung Hwae , Son Jae Sung 
Published: December 2018

AbstractThe growing concern over the depletion of hydrocarbon resources, and the adverse environmental effects associated with their use, has increased the demand for renewable energy sources. Thermoelectric (TE) power generation from waste heat has emerged as a renewable energy source that does not generate any pollutants. Recently, ink‐based processing for the preparation of TE materials has attracted tremendous attention because of the simplicity in design of power generators and the possibility of cost‐effective manufacturing. In this progress report, recent advances in the development of TE inks, processing techniques, and ink‐fabricated devices are reviewed. A summary of typical formulations of TE materials as inks is included, as well as a discussion on various ink‐based fabrication methods, with several examples of newly designed devices fabricated using these techniques. Finally, the prospects of this field with respect to the industrialization of TE power generation technology are presented.
Realizing Ultralow Concentration Gelation of Graphene Oxide with Artificial Interfaces
Authors: Luo Chong , Lv Wei , Qi Changsheng , Zhong Lixiang , Pan Zheng‐Ze , Li Jia , Kang Feiyu , Yang Quan‐Hong 
Published: December 2018

AbstractUnderstanding the chemistry in the gelation (interfacial assembly) of graphene oxide (GO) is very essential for the practical uses of graphene‐based materials. Herein, with the designed artificial interfaces due to the introduction of water‐miscible isopropanol, the gelation of GO is achieved in water at an ultralow concentration (0.1 mg mL−1, the lowest ever‐reported) with a solvothermal treatment. Intrinsically, with a lower intercalation energy, water shows much stronger attraction with GO than isopropanol, inducing a microphase separation in the miscible mixture of isopropanol and water. In the solvothermal process, the partially reduced GO sheets interact with each other along the water–isopropanol interface and assemble into interconnected frameworks. In general, the formation of the artificial interface results in locally concentrated GO in the water phase, which is the final driving force for the gelation at ultralow concentration. Thus, the threshold for the GO gelation concentration is dependent upon the water fraction in the mixture and water acts as the spacer to facilitate the gelation and final control of the resulting materials microstructure. This study enriches interface/gelation chemistry of GO and indicates a practical way for precise structural control and scale‐up preparation of graphene‐based materials.
A Readily Accessible Functional Nanofibrous Membrane for High‐Capacity Immobilization of Ag Nanoparticles and Ultrafast Catalysis Application
Authors: Liu Ke , Cheng Pan , Kong Chuncai , Guo Qihao , Lu Zhentan , Liu Qiongzhen , Li Mufang , Wang WenWen , Wang Yuedan , Zhong Weibing , Sun Gang , Wang Dong 
Published: December 2018

AbstractConstructing macroscopic materials with optimal surface structure to immobilize silver nanoparticles polluted in water environment and further maximize their practical functionality still remains a great challenge. An infrequent strategy is developed to build a flexible material system combining PVA‐co‐PE nanofiber membrane (NFM) scaffold and mussel‐inspired polydopamine (PDA), which provides a formidable surface interacting with polyethyleneimine (PEI). The resultant PEI/PDA/NFM presents an ultrahigh adsorption capacity (727.8 mg g−1) to citrate‐capped silver nanoparticles much higher than the values reported in the literatures. The broad applicability of the multifunctional composite membranes in water treatment is further demonstrated. Interestingly, a promising concurrent performance of antibacterial, antifouling, and catalysis is acquired in bacterial filtrations. Benefiting from the structure, a plasma process further enhances the catalytic performance of AgNPs‐PEI/PDA/NFM with an ultrahigh turnover frequency value: 6.65 × 10−1 mol mol−1 min−1, which facilitates the fast degradation treatment of p‐nitrophenol (p‐NP) in continuous‐flow filtration. The excellent properties can be rationally assigned to the optimized surface structure synergistically determined by the high specific area of porous nanofiber scaffold and high substrate adaptability of reactive polydopamine. This implies the superiority of membranes obtained by present strategy in recycling Ag NPs contaminant and further applies it in fast‐efficient wastewater treatment applications.
Hyperfiltration during early childhood precedes albuminuria in pediatric sickle cell nephropathy
Authors: Lebensburger Jeffrey D. , Aban Inmaculada , Pernell Brandi , Kasztan Malgorzata , Feig Daniel I. , Hilliard Lee M. , Askenazi David J. 
Published: December 2018

AbstractBackgroundIn patients with diabetes mellitus, hyperfiltration precedes the development of albuminuria. Pediatric sickle cell anemia (SCA) patients have a high prevalence of hyperfiltration and albuminuria during early childhood and adolescence. We tested the hypothesis that hyperfiltration precedes the development of albuminuria in a longitudinal pediatric SCA cohort.MethodsWe identified 91 participants with HbSS or SB0 thalassemia 5‐21 years of age enrolled in a longitudinal sickle cell nephropathy cohort study who had a cystatin C measured during early childhood (4‐10 years of age). Early hyperfiltration was defined as a mean eGFR >180 mL/min/1.73m2 using cystatin C obtained from 4 to 10 years of age. Persistent albuminuria was defined as an albumin to creatinine ratio > 30 mg/g on two of three untimed urine specimens. Time to event analysis estimated survival curves for participants with and without hyperfiltration using Kaplan‐Meier curves and used logrank test for categorical variables to assess the association with time to development of the first episode persistent albuminuria.ResultsPersistent albuminuria occurred more often and at an earlier age in participants with early hyperfiltration compared to those without early hyperfiltration (log‐rank, P = .004). Participants who developed albuminuria have a significant increase in their eGFR during childhood (P = .003) as compared to participants who have not yet progressed to albuminuria (P = .26). For every 1 g/dL increase in hemoglobin, the hazard ratio for developing persistent proteinuria decreased by 0.56 (95% CI: 0.3, 1.06, P = .07).ConclusionHyperfiltration precedes the development of persistent proteinuria in pediatric SCA patients. Intervention strategies should target lowering eGFR during early childhood.
The Elementary Charge for the Definition and Realization of the Ampere
Authors: Jeckelmann Beat , Piquemal François 
Published: December 2018

AbstractThe elementary charge e is one of the seven defining constants in the revised International System of Units (SI). Here, the determination of the elementary charge with the highest precision is discussed, including the results of the special CODATA adjustment leading to the fixed value of e. The various options to realize the ampere and the other electrical units in the revised SI, either through the counting of electrons by using single‐electron tunneling devices or through the Josephson and quantum Hall effect, respectively, are further elucidated.
Dechlorination of carbon tetrachloride by Nanoscale Nickeled Zero‐Valent Iron @ Multi‐Walled Carbon Nanotubes: Impact of reaction conditions, kinetics and mechanism
Authors: Chen Xiao , Lv Xiaofan , Yang Qi , Wang Yeyao , Jin Xin , Wang Jing , Yang Zhilin 
Published: December 2018

The nanoscale nickeled zero‐valent iron @ multi‐walled carbon nanotubes (NF@MWCNTs) were synthesized, characterized and used to dispose carbon tetrachloride (CT) in aqueous solution. Scanning electron microscopy (SEM), X‐ray energy dispersive spectroscopy (EDS), X‐ray diffraction (XRD) and Brunauer–Emmett–Teller (BET) gas sorptometry measurements were conducted to characterize the microstructure of the NF@MWCNTs. And batch experiments under different operation parameters were conducted to investigated the activity of NF@MWCNTs on degrading CT, including the content of NF@MWCNTs composites, temperature, catalyst dosage, initial pH and different anions. The experimental results showed that 4% nickel content of Ni/Fe bimetal and 2:1 doping ratio of Fe/MWCNTs were the wise choices in this study, which provided excellent degradation efficiency of CT when compared with nanoscale zero‐valent iron (nZVI) (97.44% and 55.28%, respectively). That was benefited from the fact that MWCNTs as an excellent support material could reduce the activation energy of 7.952 kJ/mol, and the nickel metal further reduced the reaction activation energy of 11.022 kJ/mol as presented in the conceptual model. Beyond that, NF@MWCNTs showed good reusability after five times consecutive reaction. Based on these, the reaction mechanism and degradation pathway also had been discussed.
Behaviors classification based distance measuring system for pedestrians via a foot‐mounted inertial sensor
Authors: Zhou Zebo , Mo Shanhui , Wu Jin , Fourati Hassen 
Published: December 2018

AbstractIn this paper, we develop a foot‐mounted pedestrian navigation system prototype with the emphasis on distance measuring with an inertial measurement unit (IMU) which implies the characteristics of pedestrian gait cycle and thus can be used as a crucial step indicator for distance calculation. Conventional methods for step detection and step length estimation cannot adapt well to the general pedestrian applications since the parameters in these methods may vary for different persons and motions. In this paper, an adaptive time‐ and frequency‐domains joint distance measuring method is proposed by utilizing the means of behaviors classification. Two key issues are studied: step detection and step length determination. For the step detection part, first behavior classification along with state transition strategy is designed to identify typical pedestrian behaviors including standing still, walking, running and irregular swing. Then a four‐stage step detection method is proposed to adaptively determine both step frequency and threshold in a flexible window. Based on the behavior classification results, a two‐segment functional based step length model is established to adapt the walking and running behaviors. Finally, real experiments are carried out to verify our proposed step detection method and step length model. The results show that the proposed method outperforms the existing representative methods and it exhibits the merits of accuracy and adaptability for different persons in real time and significantly improves the accuracy of distance measuring.