bluuebunny/crossref_metadata_2025 huggingface dataset:
Transcriptomics analysis revealing candidate genes and networks for sex differentiation of Yesso scallop(Patinopecten yessoensis)
Authors: Zhou Liqing , Liu Zhihong , Dong Yinghui , Sun Xiujun , Wu Biao , Yu Tao , Zheng Yanxin , Yang Aiguo , Zhao Qing , Zhao Dan
Published: June 2019

Background:The Yesso scallop, Patinopecten (Mizuhopecten) yessoensis, is a commercially important bivalve in the coastal countries of Northeast Asia. It has complex modes of sex differentiation, but knowledge of the mechanisms underlying this sex determination and differentiation is limited.
Results:In this study, the gonad tissues from females and males at three developmental stages were used to investigate candidate genes and networks for sex differentiation via RNA-Req. A total of 901,980,606 high quality clean reads were obtained from 18 libraries, of which 417 expressed male-specific genes and 754 expressed female-specific genes. Totally, 10,074 genes differentially expressed in females and males were identified. Weighted gene co-expression network analysis (WGCNA) revealed that turquoise and green gene modules were significantly positively correlated with male gonads, while coral1 and black modules were significantly associated with female gonads. The most important gene for sex determination and differentiation was Pydmrt1, which was the only gene discovered that determined the male sex phenotype during early gonadal differentiation. Enrichment analyses of GO terms and KEGG pathways revealed that genes involved in metabolism, genetic and environmental information processes or pathways are sex-biased. Forty-nine genes in the five modules involved in sex differentiation or determination were identified and selected to construct a gene co-expression network and a hypothesized sex differentiation pathway.
Conclusions: The current study focused on screening genes of sex differentiation in Yesso scallop, highlighting the potential regulatory mechanisms of gonadal development in P. yessoensis. Our data suggested that WCGNA can facilitate identification of key genes for sex differentiation and determination. Using this method, a hypothesized P. yessoensis sex determination and differentiation pathway was constructed. In this pathway, Pydmrt1 may have a leading function.
Soil Health Response of Cover Crops in Winter Wheat–Fallow System
Authors: Ghimire Rajan , Ghimire Binod , Mesbah Abdel O. , Sainju Upendra M. , Idowu Omololu J.
Published: June 2019

Core Ideas

Effect of cover crops on selected soil health indicators and wheat yield was monitored.

Response of soil organic matter pools varied with cover crops and sampling dates.

Oat and its mixtures as cover crops have potential to improve soil health.

Cover cropping has a potential to improve soil health in semiarid regions. This research evaluated the effects of spring‐planted cover crops on selected soil health indicators in limited‐irrigated winter wheat (Triticum aestivum L.)–fallow system. Soil health parameters measured include soil water content (SWC), soil organic carbon (SOC), soil total nitrogen (STN), potentially mineralizable carbon (PMC), potentially mineralizable nitrogen (PMN), permanganate oxidizable carbon (POXC), inorganic N, and available P. Cover crops tested were pea (Pisum sativum L.), oat (Avena sativa L.), canola (Brassica napus L.), pea + oat (PO), pea + canola (PC), pea + oat + canola (POC), pea + oat + canola + hairy vetch (Vicia villosa L.) + forage radish (Raphanus sativus L.) + barley (Hordeum vulgare L.) (SSM), and a fallow. Cover crops were planted in February and terminated in May after 85 to 90 d. Cover crop biomass was 33 to 142% greater with oat, PO, PC, POC, and SSM than pea and canola. The SWC was 2 to 3% lower under cover crops than fallow plots at their termination, but was 2 and 4% greater in SSM and POC than fallow at wheat planting in October. Soil inorganic N was 41 to 49% lower with cover crops than fallow at termination date. Soil PMC and POXC varied with cover crop species and sampling dates. The SOC and STN contents were 18 to 20% greater with oat than PC. Oat and its mixture with other cover crops show promises to improve soil health and resilience.
Evaluation of Variable Rate Nitrogen and Reduced Irrigation Management for Potato Production
Authors: Bohman Brian J. , Rosen Carl J. , Mulla David J.
Published: June 2019

Core Ideas

Nitrogen and irrigation applications are critical to optimize yield in potato.

Crop nitrogen stress in potato can be monitored with remote sensing.

Irrigation rate can be reduced by 15% without impacting yields in humid climates.

Remote sensing can reduce nitrogen rate by 15% without impacting yield.

Remote sensing could replace petiole sampling to manage in‐season nitrogen.

Availability of soil moisture and N are primary limiting factors for potato growth on sandy soils in humid climates. This study was conducted to determine whether tuber yield or net economic return were affected by variable rate (VR) N or reduced irrigation management, and to evaluate methods to detect crop N status including remote sensing, chlorophyll meter, and petiole sampling. The effects of six N rate, source, and timing treatments and two irrigation rate treatments on tuber yield, quality, and net profitability for potato [Solanum tuberosum (L.) ‘Russet Burbank’] were investigated in 2016 and 2017 at Becker, MN, on a Hubbard loamy sand. A VR N treatment based on the N sufficiency index (NSI) approach using remote sensing was also tested. Irrigation treatments included a conventional rate (100%) and a reduced rate (85%). The VR treatment reduced N applied relative to the recommended rate by 22 and 44 kg N ha−1 in 2016 and 2017, respectively. Irrigation rate was reduced by 29 and 33 mm in 2016 and 2017, respectively. Neither VR N nor reduced irrigation produced significant differences in tuber yield or net return compared to full rate treatments. Using NSI, remote sensing was able to predict crop N status with comparable accuracy to petiole sampling while chlorophyll meter measurements were less sensitive to detecting crop N stress. Managing N using remote sensing and reducing irrigation rate are strategies that could be used on sandy soils in humid climates without having agronomic or economic impacts on potato production.
Comparative Canopy Growth Dynamics in Four Row Crops and Their Relationships with Allometric and Environmental Determinants
Authors: Kukal M.S. , Irmak S.
Published: June 2019

Core Ideas

We measured and compared canopy height, leaf area index, and aboveground biomass and their normalized and integrative forms (net assimilation rate and leaf area ratio).

Indices were modeled using heat accumulation with strong correlation and transferability.

Sensitivity of biomass production was quantified, which was higher for C4 than C3 crops.

Quantitative estimates of crop growth for regionally dominant cropping systems are imperative for various agricultural applications. Here, we studied growth patterns for maize, soybean, sorghum, and winter wheat grown under optimal growing conditions in South‐Central Nebraska during two growing seasons (2016–2017). The objectives were to measure and compare crop‐specific growth indicators such as canopy height (CH), leaf area index (LAI) and aboveground biomass (AGB), crop growth rate (GR), relative growth rate (RGR) and their normalized (LAI per plant[LAIpP], LAI per canopy height[LAIpCH], AGB per plant [AGBpP], and AGB per canopy height [AGBpCH]), and integrative forms (net assimilation rate [NAR] and leaf area ratio [LAR]). Crop‐specific sub‐seasonal magnitudes and patterns were found, which were uniform across years. Crop growth indices were empirically modeled using heat accumulation (NCTU), owing to strong correlation (mostly R2 > 0.80) and transferability. Sensitivity of biomass production between sampling events to heat accumulated between these events was quantified, which was higher for C4 crops (2.9–3.3 g m−2 °C−1) than C3 crops (0.64–1.01 g m−2 °C−1). Empirical models for estimating relatively complex growth indices were presented using indices such as CH and LAI. Moreover, LAR and RGR were highly correlated (R = 0.86) across all crops, while NAR and RGR were moderately correlated (R = 0.43), although substantial crop‐specific variability existed among these indices. The data, comparisons and models presented are the first investigated values for these crops in Midwest under uniform conditions, and are valuable for applications in remote estimation of crop growth, crop models, crop resource use, and other related applications.
Can Potassium Silicate Mineral Products Replace Conventional Potassium Fertilizers in Rice–Wheat Rotation?
Authors: Zhao Xinlin , Gao Shuaishuai , Lu Dianjun , Wang Huoyan , Chen Xiaoqin , Zhou Jianmin , Zhang Lei
Published: June 2019

Core Ideas

We assessed the effects of several mineral fertilizers on crop yield and soil potassium fertility.

The mineral fertilizers could maintain crop yield and soil potassium fertility.

The mineral fertilizers could increase soil pH.

The mineral fertilizers can partly replace conventional potassium fertilizers.

Potassium (K) silicate minerals are important insoluble K resources and exploring their potential as alternatives to conventional K fertilizers would be helpful to deal with the widespread K deficiency in the world. Thus on‐farm experiments with potassium silicate mineral products (KSMPs), e.g., Fubang (FB), Zhongke (ZK), Ziguang (ZG)—manufactured from natural K‐bearing rocks—were conducted to investigate their effects on crop yield, soil K fertility and pH in rice‐wheat (Oryza sativa L.–Triticum aestivum L.) rotation at Guangde County and Jiangdu County, China. The experiments lasted 2 yr at two sites and six treatments about K fertilizers were tested: no K fertilization (CK); 100% K chloride (KCl); 100% ZG; 50% KCl +50% ZG; 50% KCl +50% FB; 50% KCl +50% ZK. Results showed that both wheat and rice grain yields for CK were markedly decreased compared with that for the other treatments, regardless of K fertilizer types. Similar to KCl, the KSMPs could maintain crop yields and soil potassium fertility. Besides, the KSMPs significantly improved soil pH by average 0.47 and 0.38 at Guangde and Jiangdu, respectively, compared with that for KCl, after its application for 2 yr. However, the apparent K balances for most treatments at two sites were negative. In terms of economic aspect, the value cost ratio averaged by sites of ZG was 2.59 which was significantly higher than that for FB and ZK. In conclusion, the KSMPs can sustain crop yields and soil K fertility and thus can partly substitute conventional K fertilizers in rice‐wheat rotation on the Aquic Haplanthrepts soils.
Relating agronomic practices to environmental sustainability outcomes: energy use and greenhouse gases
Authors: Young Kelly Murray , Thomson Allison
Published: June 2019

This is Part 2 of a five‐part series on sustainability brought to you by the SPARC Initiative created in partnership between the American Society for Agronomy, the Agricultural Retailers Association, Environmental Defense Fund, and Field to Market: The Alliance for Sustainable Agriculture to empower trusted advisers to deliver services that drive continuous improvement in the productivity, profitability, and environmental outcomes of farmers’ operations. Learn more about the SPARC Initiative and access additional resources, including the six‐module series on sustainability, at www.fieldtomarket.org/SPARC. Earn 1 CEU in Sustainability by reading this article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/683.
Soil‐landscape restoration: Potential benefits and best practices
Authors: Ernst Matthew D.
Published: June 2019

Low‐yielding hilltops have long challenged Prairie Pothole crop growers and advisers. Tillage erosion has resulted in lost organic matter, natural fertility, and water‐holding capacity on the top of these knolls. Moving some of this long‐eroded topsoil from the bottom of the knolls back to the top could be a solution. Earn 0.5 CEUs in Soil & Water Management by reading this article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/685.
Effect of detergent surfactant on some selected electrolytes and metabolites of juvenile Heterobranchus bidorsalis
Authors: Mekuleyi Gabriel Olarinde , Faleti Babajide Elijah
Published: June 2019

The study examined the effect of sub-lethal level of Linear Alkylbenzene Sulphonates (LAS) on some selected electrolyte and metabolic indices of juvenile Heterobranchus bidorsalis. The fish were exposed to varying concentrations of LAS (0.00 mg/L, 0.01 mg/L, 0.02 mg/L and 0.03 mg/L, respectively) in a semi-static tank for 14 days. The chemical test analysis of LAS showed that only total suspended solid (196.8 mg/L), total alkalinity (56.1 mg/L) and nitrate (7.9 mg/L) exceeded Federal Environmental Protection Agency (FEPA) and Standard Organization of Nigeria (SON) permissible limits. Conductivity and dissolved oxygen (DO) of the water parameter differ significantly (p < 0.05) from the control and among dose concentration. Electrolyte values (K+ and Ca2+) were not significantly (p > 0.05) different at all level of LAS concentration. However, there were significant (p < 0.05) differences in Na+ concentration. The highest value for Na+ (16.00 + 1.16 Mmol/L) was obtained at 0.02 mg/L, while the least (5.35 + 0.45 Mmol/L) was recorded in the control at 0.00 mg/L. There was significant (p < 0.05) differences in values of urea in the experimental group, except between 0.01mg/L (1.53 + 0.05 mg/dm) and 0.02 mg/L (1.60 + 0.06 mg/dm). On the contrary, there were significant (p < 0.05) differences in all the values of creatinine recorded in this study. The values increased down the experimental group in a dose dependent pattern. The highest value of creatinine (54.45 + 4.96 mg/dm) was recorded at 0.03 mg/L dose concentration while the least (30.47 + 7.65 mg/dm) was obtained in the control (0.00 mg/L). The present study concluded that LAS has impact on the metabolites and electrolytes especially creatinine and the Na+. Therefore, LAS could be very toxic at high concentrations and as such, indiscriminate discharge of LAS effluent into aquatic environment should be averted.
GCMS, phytochemicals and antioxidant activities of in vitro callus extracts of Strobilanthes kunthiana (Nees) T. Anderson ex Benth: An endemic plant of Acanthaceae
Authors: Prabakaran R. , Kirutheka E.
Published: June 2019

Strobilanthes kunthiana (Neelakurinji) is an endemic and underexploited plant belongs to the Family Acanthaceae. The aim of our study was to evaluate phytochemical analysis, GC-MS analysis and antioxidant activity of in vitro callus extract of Strobilanthes kunthiana. In this present study the phytochemical analysis of various extract of S. kunthiana in vitro callus were studied. Phytochemical analysis confirmed the presence of alkaloids, flavonoids, glycosides, saponins, tannins, steroids, terpenoids and phenols in the methanolic extract comparing to the other extracts. In this study GC-MS analysis revealed the presence of 10 bioactive phytochemical compounds were identified in the methanolic extract. The prevailing compounds were 9,12-octadecadienoic acid (Z,Z) (50.32%), hexadecanoic acid, methyl ester (20.69%), 9-octadecenoic acid (Z)-,methyl ester (10.45%), heptadecanoic acid, 16-methyl-, methyl ester (5.78%), 2,6-bis(1,1-dimethylethyl)-4-methyl phenol (4.70%). 3-methyl-2-ketobutyric acid tbdms (2.79%), 2,2,3,4-tetramethyl-5-hexen-3-ol (2.41%), N-(tert-butoxycarbonyl)-2-(4-methoxyphenyl) allylamine (1.06%), cyclotrisiloxane, hexamethyl (0.94%), benzenesulfonamide (0.87%). The antioxidant property was evaluated for methanol and ethanolic extract by DPPH method. The higher percentage of inhibition (79.23 +/- 0.37) was observed in 250 μg/mL of ethanol extract followed by (90.35 +/- 0.54) methanolic extract against the standard ascorbic acid (91.25 +/- 0.33). The results show that the methanolic extract possesses more antioxidant activity than ethanol. The plant S. kunthiana may be exploited as a source of natural antioxidant and as herbal alternatives for various disorders.
Persistent epigenetic modulation by radiation exposure/insults in mammalian cells
Authors: Islam Muhammad Torequl
Published: June 2019

Effects of radiation in biological systems are quite interesting. Interaction of radiation to epigenetic mechanisms has been also demonstrated earlier. The aim of this review is to sketch a current scenario on radiation exposure/insults on the epigenetic mechanisms in mammalian cells. Evidence from the databases, mainly from Pubmed and Science Direct were considered. Findings suggest that radiation has a dose and time-dependent effect in our body. Cells and tissues from different sources have differential responses towards radiation insults. Although radiation has impacts on epigenetic modulation, but it has beneficial combinatorial effects with a number of epigenetic modalities. Radiation has both bad and good impacts on epigenetic mechanisms.
Problems and perspectives for attracting investments in economy of Ukraine
Authors: Bogatyrev Ivan , Topchiy Vasyl , Koropatnik Igor , Kotliarenko Oleksandr , Kofanov Andrii
Published: June 2019

The purpose of the article is to study the current problems of investment processes in the conditions of transformation of the Ukrainian economy. The relevance of the research was due to significant changes in political, economic and social processes of Ukraine. The research was conducted using general scientific and special methods and methods of research, such as theoretical analysis and synthesis, methods of grouping, modeling, comparison, as well as methods of systematization and scientific synthesis, in particular on materials: Ministry of Economic Development and Trade of Ukraine, research conducted by the Doing Business Group of the World Bank, rating of Moody’s Investors Service, rating of Global Competitiveness Index 2017/2018 and of European Business Association. The most actual factors of influence of political, economic, criminal and legislative processes on investment potential of Ukraine were analyzed. It was defined that the economic of Ukraine is characterized by the deficiency of capital, progressive technologies, mutual integration of scientific and industrial spheres, developed management and high-tech production and the recommendations to create favorable conditions for investment were made. Positive changes were noted in creating a legal framework for the promotion, protection of investments and intensification of investment activity in Ukraine.
Estudio de biodiscos como tratamiento secundario de aguas residuales domésticas
Authors: Delgado Gustavo
Published: June 2019

Se diseñó un sistema de biodiscos a escala de laboratorio como tratamiento secundario de un efluente de un reactor UASB. El sistema se construyó con dos etapas en serie, cada etapa con un volumen efectivo de 81 litros y siete (07) discos de PVC de 60 cm de diámetro que hacían un área total efectiva de 7.92 m2. El sistema funcionó a un caudal constante de 432 l/día (TRH de 4.50 horas por etapa) y se evaluó en dos períodos de operación variando la velocidad de rotación de los discos (3 rpm durante 3 meses y 5 rpm durante 3 meses).  Se midieron los valores de DBO5, SST, Turbiedad, pH y Temperatura. Además se observaron las características físicas y microbiológicas de la biopelícula durante todo el período de investigación. El sistema tuvo un grado óptimo de oxigenación, alcanzando solo en la primera etapa un valor promedio de 5.21 mg O2/l. La eficiencia de remoción promedio de la DBO5 fue del 90% para una velocidad de rotación de 3 rpm y del 78% para 5 rpm. Finalmente el sistema mostró un mejor desempeño en términos de remoción de materia orgánica para una velocidad de 3 rpm  Además, se comprobó que dos etapas en serie tuvieron un mejor rendimiento que una sola etapa. Los microorganismos más representativos de la biopelícula de la primera etapa fueron protozoarios ciliados nadadores o libres y las bacterias filamentosas que tuvieron un crecimiento excesivo para el segundo período. En la segunda etapa, fueron los protozoarios ciliados fijos, rotíferos y algas unicelulares y filamentosas.
DruBot: Prototipo robótico para autenticación por comparación de proporciones faciales para el control de asistencia y detectar la suplantación en evaluaciones
Authors: Yallico Arias Tereza , Huisacayna Cutipa Abigail , Ale Ale Neisser , Calderón Niquin Marks
Published: June 2019

Este trabajo describe el desarrollo del prototipo robótico llamado DruBot que busca reconocer los rostros de las personas que ingresan a un aula en específico, un área privada o un examen, comparándolos con una base de datos para cada caso (para distinguirlos a partir de las características extraídas de la foto del carnet universitario y los frames obtenidos del video de bienvenida de cada estudiante)  y determinar si la persona que se ve a través de la cámara tiene o no acceso al área, emitiendo una señal distinta si se le permite el ingreso o no. Aplicamos técnicas de visión artificial (Haar cascade para la detección de rostros en toda la imagen capturada por la cámara en tiempo real y Face Landmarks para encontrar los puntos clave del rostro humano detectado, calcular sus proporciones a partir de distancias euclidianas y comparar para el reconocimiento de cada persona en específico) y comunicación serial con dispositivos electrónicos a fin de que los presentes noten cuándo hay un intruso o cuándo ha reconocido bien a alguien para tomarle asistencia.
Experience in ensuring the strength of the supporting structures of locomotives and electric multiple units
Authors: KOCHERGIN V. V. , BUKHANTSEV A. A. , PANKRATOVA I. G. , RUSANOV O. A.
Published: June 2019

To ensure fatigue strength of metal structures in mechanical engineering, various approaches are practiced. One of them allows for the appearance of cyclic stresses in details with amplitudes exceeding the fatigue limit. Typically, this approach is justified where the loads are fairly regular and ample opportunities for fatigue testing exists, but the requirement of a minimum metal consumption is critically important as well. Another approach to ensuring fatigue strength does not allow the possibility of cyclic stresses with amplitudes exceeding its endurance limit in the designed structure. With regard to the supporting elements of locomotives and electric multiple units (EMU) to ensure the fatigue resistance characteristics in Russia and the CIS countries, the second of these approaches has been implemented and successfully practiced for many years. Its purpose is to ensure the absence of fatigue damage in the parts of the carriage and the body during the designated service life. Relevant requirements for strength and dynamic qualities for these types of rolling stock, as well as the method of conducting dynamic strength tests are currently formalized in the standards. The article presents the main provisions of the methodology currently used on the railways of the Russian Federation and CIS countries to control the strength requirements of load-bearing structures of locomotives and EMUs, as well as the admission of these types of rolling stock to operation. Types of dynamic strength tests are described, strength indicators are listed, methods for their determination are indicated. Today, this technique successfully solves the problem of the strength of load-bearing structures of traction rolling stock.
Editoriaal
Authors: Nomine Sine
Published: June 2019

Marge-geschiedenis of geschiedenis in de marge
Van de hudevettersbrugghe tot de Huidevetterskaai
Authors: Devriese Luc
Published: June 2019

Tussen de Oude en de Nieuwe Leie, bij de Kookaard en aan de KerkwegVerkaveling en evolutieHuidevetterij aan de LeieoeverDe huidenvettersfamilie d'HoogheVroeg-industriële epiloogHuizen en gebouwencomplexen (bijlagen)
Het Gentse ambachtsleven veelzijdig weerspiegeld in de huidenvetterij
Authors: Devriese Luc
Published: June 2019

Het huidenvettersvakAmbachtsstructurenConflictbeheersingVan velen tot weinigen en van klein tot grootGeen toeval dat Lieven Bauwens...
Acute Posterior Multifocal Placoid Pigment Epitheliopathy (APMPPE) – a possible clinical picture of Ocular Borreliosis
Authors: Benašić Tvrtka , Biuk Dubravka , Mandić Krešimir , Vukojević Nenad , Kopić Andrijana , Vinković Maja
Published: June 2019

Cilj: Prikazati slučaj pacijenta s akutnom posteriornom multifokalnom plakoidnom pigmentnom epiteliopatijom (APMPPE) u sklopu infekcije borelijom Lyme. Prikaz slučaja: Šesnaestogodišnjeg pacijenta uputio je pedijatar zbog naglog pada vidne oštrine na desnom oku. Vidna oštrina kod dolaska bila je 0,01 po Snellenu. Žalio se i na zatiljnu glavobolju unazad nekoliko dana i naveo ubod nepoznatog kukca s okolnim osipom na koži. Na oba oka na fundusu su se utvrdili znakovi korioretinitisa. Učinjena je optička koherentna tomografija (OCT, engl. optical coherence tomography), OCT-angiografija (OCT-A), vidno polje (VP), fluoresceinska angiografija (FA), angiografija indocijanin zelenilom (ICGA, engl. indocyanine green angiography), kompletna laboratorijska, serološka i imunološka obrada, rendgen srca i pluća, magnetska rezonancija (MR) mozga, pregled i konzultacija infektologa i neuropedijatra. Postavljena je dijagnoza APMPPE-a i uvedena peroralna terapija metilprednizolonom 0,5 mg/kg tjelesne težine i doksiciklinom 2 x 100 mg dnevno. Serodijagnostika je pokazala povišene vrijednosti IgM i IgG na Borreliu spp metodom imunoenzimske analize (ELISA, engl. Enzyme Linked Immuno Sorbent Assay), što je bilo potvrđeno western blot analizom. Terapija je dovela do brzog poboljšanja kliničke slike i vidne oštrine na 0,75. Zaključci: Želimo naglasiti da je u slučaju APMPPE-a potrebno napraviti kompletnu obradu kako bi se isključile konkomitantne infekcije, a potrebno je posumnjati i na okularnu boreliozu, osobito u slučaju ugriza krpelja ili nepoznatog kukca, čak i kad se pacijenti ne sjećaju ugriza. Ovakav pristup omogućava promptno liječenje APMPPE-a i borelioze kako bi se smanjile okularne ili/i sistemske komplikacije.
Mikrokirurško liječenje rupture žute pjege
Authors: Kovačević Damir , Čaljkušić-Mance Tea , Kostić Lana
Published: June 2019

Ruptura žute pjege poremećaj je koji zahvaća najdelikatnije strukture centralne mrežnice. Neliječena uglavnom dovodi do značajnog gubitka centralne vidne oštrine. Mikrokirurško liječenje rupture žute pjege prvi put se spominje 1991. godine u radovima Kelly i Wendela. Od tih relativno jednostavnih početaka uz upotrebu klasičnih vitrektoma velikog promjera i upotrebe zraka kao tamponade na kraju operacije do razvoja bešavnih mikroincizijskih tehnologija prošlo je više od 20 godina. Uvođenjem ljuštenja membrane limitans interne uz pomoć posebnih vitalnih boja i novih vrsta tamponada poboljšao se anatomski i funkcionalni uspjeh ovih operacija. Upotrebom optičke koherentne tomografije omogućena je bolja analiza vitreoretinalnih promjena, kao i praćenje postoperativnih promjena u području žute pjege. Nove metode u liječenju kompliciranih ruptura žute pjege kao što su formiranje inverznog poklopca od tkiva membrane limitans interne, farmakološka vitreoliza, transplantacija retine te novi oblici konzervativnog liječenja kod početnih ruptura žute pjege daju nadu da sve mogućnosti liječenja ove bolesti nisu iscrpljene.
Risk of acute kidney injury in patients with HIV receiving proton pump inhibitors
Authors: Sutton S Scott , Magagnoli Joseph , Cummings Tammy H , Hardin James W
Published: June 2019

Aims/patients & methods:To evaluate the risk of acute kidney injury (AKI) in patients with HIV receiving proton pump inhibitors (PPI) a cohort study was conducted utilizing the Veterans Affairs Informatics and Computing Infrastructure (VINCI) database. Patients were followed from the index date until the earliest date of AKI, 120 days or end of study period, or death. Statistical analyses utilized a Cox proportional hazards model.Results:A total of 21,643 patients (6000 PPI and 15,643 non-PPI) met all study criteria. The PPI cohort had twice the risk of AKI compared with controls (2.12, hazard ratio: 1.46–3.1).Conclusion:A nationwide cohort study supported the relationship of an increased risk of AKI in patients receiving PPIs.
De contrabandistas, justicieros y carteles
Authors: Ramírez Ibarra Ramón
Published: June 2019

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La Doctrina christiana en lengua mexicana de fray Pedro de Gante: una herramienta pedagógica para el Nuevo Mundo
Authors: Yunes Vincke Estefanía
Published: June 2019

Este artículo examina uno de los primeros textos pedagógicos cristianos escritos en náhuatl, la Doctrina Cristiana (1547,1553) compuesta por una de las máximas figuras del periodo de evangelización temprano, Fray Pedro Gante. A través de estas páginas, se analizará como la Doctrina fue concebida como una herramienta didáctica dirigida a una audiencia de pipiltin nahuas que requerían una enseñanza cristiana más compleja. El contenido de la obra y la calidad de la traducción podrían señalar que Gante planeó esta obra como una herramienta para formar un futuro clero nahua. La Doctrina no solo muestra la iniciativa e ingenio de Gante en resolver complicados problemas pedagógicos, también pone al descubierto las ideas que el fraile tenía en relación a las capacidades intelectuales de sus estudiantes. De esta manera la Doctrina se puede ver como una declaración política del fraile durante un periodo en el que se estaba discutiendo la idea de la formación de un clero indígena.
Assessment of the vehicles impact on the RUDN University campus
Authors: Boeva Daria V , Khaustov Alexander P
Published: June 2019

The article reflects the research carried out within the framework of the “Green campus” project. The project was organized by the Ecological Faculty of RUDN University, the purpose of which was the monitoring of the RUDN University campus and obtaining detailed information about the technogenic load on the territory. This paper presents the results of year-round studies of the territory, which allowed to establish the variability of anthropogenic load from vehicles depending on the seasons. The article presents the explanation of the vehicles impact assessment methods: instrumental and calculated methods, as well as their comparison with each other. The results are given in charts and maps. Identification of priority substances was done that contribute mostly to the atmosphere pollution.
Blended learning approach to teaching ESP case study of TED talks
Authors: Rudneva Maria A , Valeeva Nailya G
Published: June 2019

This work analyzes implementation of TED talks as a part of ESP blended learning training for fostering students’ listening comprehension skills. We present a case study of 12 lower proficiency nonlinguistic students who were assigned listening to a designated TED talks each week and performing listening comprehension tasks that were later checked in the classroom. TED lectures were offered as a part of academic and specific English course for undergraduate students of the ecological faculty and were aimed at enhancing learner autonomy, enriching academic vocabulary, developing listening comprehension skills and promoting scholarly journal writing in a long-term perspective. The results were formally assessed by pre-test and post-test as well as by individual anonymous surveying of the students upon completion of the course. We looked into the results of the survey and overviewed pros and cons of implementation of TED talks into ESP curriculum.
Case study of fossilized L2 errors correction in ecology students
Authors: Rudneva Maria A , Valeeva Nailya G
Published: June 2019

The paper is dedicated to a self-assessment approach as a means of addressing fossilized errors in L2 speaking within the professional communication framework. The phenomenon of fossilization manifests in L2 spoken and written texts on phonological, lexical and grammatical level. Addressing the issue of fossilization has to deal with creating a perfect fluency/accuracy balance, increase of fluency in L2 classroom settings inevitably results in fossilized errors in learners as it compromises their accuracy on a permanent basis. In this respect it is interesting to look into common practices of addressing fossilized errors in advanced L2 classroom. This work is a case study of an attempt to address individual fossilized errors in L2 C1-level students at university level. The paper argues that self-assessment as a means of developing metacognitive awareness and consciousness of advanced L2 learners is a valid tool for eliminating fossilized errors in the long run. We present the results of case study that took place at RUDN University in 2018 within 3 months. During this period a group of advanced L2 learners were asked to record their spontaneous pair interactions, transcribe the conversations and correct their own mistakes. The corrected transcripts were submitted to the L2 instructor for further evaluation and assessment. Small corpora of error-tagged conversations were created for each individual student. Then the instructor created a report on individual mistakes and errors on monthly basis. Persistent, fossilized errors were registered for each individual case and measured at the beginning for the pedagogical experiment and at its end. The paper presents our findings, positive dynamics and overall pedagogical value of establishing correlation between students’ previous knowledge and self-assessment.
Factors Associated With Successfully Filling Faculty Vacancies in Family Medicine
Authors: Everard Kelly  M. , Zoberi Kimberly , Jacobs Christine
Published: June 2019

Background and Objectives: Faculty vacancies are a concern for chairs of academic family medicine departments who regularly face having to recruit new faculty. Faculty physicians who report lack of support for research and teaching or excessive time in activities that are not meaningful may experience burnout resulting in leaving academic medicine.
Methods: Data were collected via a Council of Academic Family Medicine Educational Research Alliance (CERA) survey of US family medicine department chairs. To determine characteristics associated with success in hiring new physician faculty, chairs answered questions about the number of vacancies in the previous 12 months, the number of vacancies filled in the previous 12 months, the months the longest vacancy was open, starting salary, whether signing bonus was offered, and the full-time equivalent (FTE) for clinical, research, teaching, and administrative time.
Results: The response rate was 52%. Chairs reported an average of 3.9 vacancies in the previous 12 months, and an average of 2.5 (66%) were filled. Chairs who didn’t offer protected time for teaching filled a higher percentage of their vacancies, but they did not fill them faster than departments that did offer teaching time. Higher salary and a signing bonus were associated with filling positions faster. Chairs who offered a signing bonus filled positions nearly 4 months sooner than those who didn’t.
Conclusions: Offering protected time for teaching or research and FTE allocation for clinical, teaching, research, and administrative time were not associated with success in hiring new faculty. Chairs who offered higher salaries and signing bonuses were able to hire faculty more quickly than those who didn’t.
Livro didático e memória - A construção do saber escolar sobre a História de Santa Catarina, nas primeiras décadas do século XX
Authors: Da Silva Cristiani Bereta , Gasparini Helena Gabriela Moellmann
Published: June 2019

Quais acontecimentos, personagens, recortes temporais, perspectivas, imagens, enfim, memórias sobre a história de Santa Catarina vêm sendo privilegiadas – em detrimentos de outras – nos livros didáticos de História? O presente trabalho discute a construção de memórias sobre heróis e mitos catarinenses nos livros didáticos de História que foram produzidos e circularam nas décadas de 1920 a 1950, em Santa Catarina. Esse esforço pretende contribuir para dotar de inteligibilidade a própria trajetória do ensino de história de Santa Catarina, evidenciando, em sua historicidade, as formas de apropriação e construção do conhecimento histórico escolar em suas permanências e descontinuidades, e, sobretudo, também, quais os pertencimentos, as identidades, as memórias que foram construídas nesse processo. A discussão proposta, aqui, é recorte da pesquisa “A História de Santa Catarina nos livros didáticos de História e a construção do saber escolar”, que vem sendo desenvolvida com bolsa de iniciação científica (Edital PIC/UDESC2008-2009), e que se propõe investigar, numa análise de longa duração, as relações estabelecidas – em suas aproximações e distanciamentos - entre a produção historiográfica e a produção de uma história de Santa Catarina para o uso escolar.
O processo de construção da coerência em textos narrativos na escola
Authors: Isaia Pinheiro Flávia
Published: June 2019

Resumo: O presente artigo tem por objetivo discutir o conceito de texto e os tipos de narrativas escolares infantis à luz das obras de Piaget referentes ao terceiro período (fim dos anos 30 ao fim dos anos 50), bem como apresentar alguns dados iniciais referentes ao estudo de doutorado da professora pesquisadora, realizado com sujeitos pré-adolescentes que freqüentavam, no ano de 2008, o 5º ano de escolaridade, em escola pública da Rede Municipal de Ensino, em Porto Alegre. A análise dos dados de duas meninas conduz aos seguintes pressupostos: para que ocorram avanços cognitivos no sujeito, a leitura e a interpretação exercem um papel fundamental na melhoria da capacidade de descentração e, consequentemente, na diferenciação entre o que o autor pensa, o que ele escreve e como utiliza os recursos da escrita para se fazer compreender.Palavras-chave: Texto; Narrativas escritas; Coerência; Descentração.Abstract: This article aims to discuss the concept of text and the types of school children’s narratives according to Piaget's works of the third period (late 30s to late 50s), and present some initial data from the doctoral studies of the teacher researcher, conducted with pre-adolescent subjects who, in 2008, attended the 5th grade in a public municipal school in Porto Alegre. Data analysis of two girls leads to the following assumptions: for advancing in the subject’s cognitive abilities, reading and interpretation play a significant role in improving the capacity of decentration and hence the differentiation between what the author thinks, what he writes and how he uses the resources of writin in order to make himself understood.Keywords: Text; Written narratives; Coherence; Decentration..
A história recente nos livros didáticos: a ditadura militar e a questão da anistia no Brasil
Authors: Rodeghero Carla Simone , Machado Vanderlei
Published: June 2019

O presente artigo discute maneiras de inserir a História recente do Brasil nas aulas do Ensino Médio. A partir das discussões atuais sobre a necessidade de uma nova interpretação da Lei da Anistia de 1979, o texto volta à década de 1970 para recuperar o processo de luta em prol da anistia e os limites da lei aprovada, procurando mostrar a complexidade dessa problemática e a sua fecundidade para refletir sobre o presente e o passado brasileiros. Investiga o tratamento que tem sido dado ao tema nos livros didáticos apresentados pelo Catálogo Nacional do Livro didático de 2008. Sugere, ao final, caminhos para trabalhar a anistia em sala de aula.  Palavras-chave: História do tempo presente, livros didáticos, Lei da Anistia, Ensino Médio.
Energia: um conceito unificador em sucessivas situações de estudo
Authors: Araújo Maria Cristina Pansera , Boff Eva Teresinha Oliveira
Published: June 2019

Este trabalho sistematiza seis situações de estudo (SE) produzidas coletivamente pelo Gipec-Unijuí e professores das redes de ensino de Ijuí. As SE focalizam o conceito unificador energia (ANGOTTI, 1991) e suas relações com a sustentabilidade. O conceito foi evidenciado, significado e complexificado nas diferentes SE de modo evolutivo (Vigotski, 2000), já que a palavra constitui o pensamento. A elaboração das SE compreendeu, ainda, a identificação de outros conceitos científicos interrelacionados e contemplando procedimentos, valores, atitudes e perspectiva ética no trato dos aspectos vivenciados e da compreensão esperada a partir das ciências da natureza e suas tecnologias. A organização das SE contempla atividades, realizadas na escola e/ou fora delas, com observações estruturadas em objetivos e conteúdos com registros, sistematizações e análise do trabalho desenvolvido, constituindo-se em espaços de formação pela pesquisa
Entre a praça e a escola: analisando processos de apropriação espacial através de uma abordagem complexa
Authors: Souza Felipe Silveira de
Published: June 2019

Este ensaio trata dos processos de apropriação espacial do espaço público em comparação com o espaço escolar. Estes processos de apropriação espacial são vistos através dos conceitos de território e territorialidade, buscando, desse modo, compreender a forma como os grupos sociais – tribos urbanas – usam o espaço. Através da teoria da complexidade de Edgar Morin, buscamos estabelecer as similaridades e as diferenças entre os processos de apropriação espacial no espaço escolar e no espaço público. O entendimento dos processos de apropriação espacial na escola é visto como fundamental para a efetivação de uma ação pedagógica escolar mais condizente com a realidade social.
Um percurso em Porto Alegre: Cidade, história e urbanismo
Authors: Souza Celia Ferraz de
Published: June 2019

A idéia de que é possível conferir as marcas que as correntes históricas do urbanismo deixaram ao longo do tempo na cidade, levou a se propor alguns procedimentos metodológicos para essa análise. Através da escolha de percursos urbanos, que atravessam vários períodos de tempo, se consegue mostrar como se deu a transformação e a pluralidade do urbanismo da cidade. O objetivo deste trabalho é mostrar através de um percuso em Porto Alegre, as marcas do urbanismo moderno, deixadas ao longo do tempo, na sua estrutura urbana.
Produtos culturais e redes sociais na sala de aula
Authors: Batista Júnior José Ribamar Lopes
Published: June 2019

Neste trabalho, relatamos uma experiência de uso de mídias digitais no ensino de língua materna com alunos do ensino médio profissionalizante do Colégio Agrícola de Floriano/UFPI. O projeto teve por objetivo desenvolver práticas de leitura e escrita dos alunos a partir da utilização de produtos culturais (CD, DVD, filme e livro) e de redes sociais (blog, twitter, youtube) como espaços de acesso e produção de diversos gêneros textuais e digitais (sinopses, fichas técnicas, resenhas, trailers, propagandas, posts, tweets etc.). Assim, o projeto consistiu na integração dessas mídias digitais como recurso pedagógico no ensino de língua portuguesa, compreendendo os seguintes procedimentos: i) levantamento e escolha dos produtos culturais; ii) exibição/leitura dos produtos; iii) elaboração, correção e reescritura de textos; e iv) produção e apresentação de vídeos sobre os produtos. Na perspectiva do ensino de língua portuguesa, trabalhamos elementos de textualidade, o resumo, a argumentação, a expressão verbal, a produção e mobilização de vários saberes que favorecem a qualificação das práticas de leitura e escrita. Além disso, o significativo interesse e motivação dos alunos revelaram as possibilidades/potencialidades do uso das mídias digitais no processo ensino-aprendizagem, especialmente a internet e suas ferramentas, instrumentos cada vez mais presentes no cotidiano dos estudantes.
Vivendo em rede: a prática da linguagem nas redes sociais
Authors: Borges Adriana Emerim , Eidam Ana Carolina Lersch
Published: June 2019

O presente trabalho pretende relatar a experiência desenvolvida em uma turma de terceiro ano do Ensino Médio, que envolveu a disciplina de Língua Portuguesa e o Laboratório de Informática da escola. A sequência didática contou com recursos variados: da exibição do filme que foi o ponto inicial da proposta à criação de um grupo de discussão, passando por atividades de leitura e de escrita, exercícios de argumentação oral e escrita, até a simulação de um tribunal de júri. Palavras-chave: Internet; rede; ensino; língua; escrita.
As Palavras Navegantes: a contribuição das linguagens virtuais na formação do adolescente contemporâneo
Authors: Moreira Martins Iara Mara
Published: June 2019

Este artigo trata da contribuição das linguagens virtuais na formação social dos adolescentes contemporâneos e consequentemente da sua presença enquanto novas formas de apreensão do conhecimento. As gerações atuais adquiriram novas percepções, advindas pela agilidade com que captam a realidade concreta através do mundo virtual. A fluidez das informações e a possibilidade de acesso a todo conhecimento humano presentes na internet trouxeram novos componentes para a formação e desenvolvimento de sujeitos que se encontram na fase da adolescência. O espaço geográfico transformou-se em um imenso campo virtualizado, codificado, onde o adolescente realiza sua leitura do mundo a partir de múltiplas ferramentas como a imagem, o símbolo, traduzindo em linguagem escrita e oral. Há especificidades que o singularizam enquanto ser em desenvolvimento: todo o conhecimento encontra-se à disposição na internet, não há assuntos proibidos ou censurados nem ao menos limite de tempo para o acesso. Ao mesmo tempo em que o recurso virtual visa o lazer, coexiste a aquisição de valores que irão compor sua formação como sujeito social. No ambiente virtual as linguagens representam para o adolescente o desenvolvimento de habilidades e a ampliação de suas capacidades, em uma ação transformadora em-si, para-si que resultam em novas formas de aprendizado com protagonismo e autonomia na busca de conhecimento e expressão social.
A reflexão colaborativa como propulsora da formação continuada de professores de língua inglesa mediante o uso das ferramentas virtuais
Authors: Soares-Silva Jesiel
Published: June 2019

Este trabalho analisa uma pesquisa colaborativa desenvolvida por cinco professoras de língua inglesa da rede pública de Goiânia, Goiás, através das novas Tecnologias de Informação e Comunicação (TIC). O propósito maior foi averiguar de que forma a pesquisa colaborativa pode contribuir para uma prática docente menos individual no ensino mediado por computador e como a reflexão e a ação podem ser alternativas na formação das professoras. Os resultados apontam que a colaboração foi um fator decisivo na formação reflexiva e prática das professoras, pois compartilhando os avanços, angústias, entraves do trabalho entre si, os professores se sentem mais seguros e confiantes para prosseguir. Os resultados também mostram que a ação e a reflexão sobre a prática foram fundamentais para a construção de uma docência menos individual.
LiteraCAp: uma proposta, vários olhares
Authors: Cavalcante Rita De Cássia , Pirotti Pereira Gabriela , Neander Souza de Souza Freya
Published: June 2019

O LiteraCAp vem sendo desenvolvido desde 2008junto aos alunos do 2° ano do Ensino Médio do Colégio deAplicação da UFRGS. Projeto de Educação a Distância, utilizaas diversas redes sociais disponíveis na ‘web’, visando à extensãodos estudos curriculares de Língua Portuguesa e Literatura,à produção de discursos autorais e ao compartilhamento responsáveldas informações disponíveis na internet. O conteúdoelaborado pelos participantes tem sido objeto de investigaçãoda Equipe de Trabalho vinculada à ação, formada por alunos eprofessores da escola e por estudantes de graduação da UFRGS.
História e Ficção em Call of Duty 3
Authors: Pospich Pereira Renato Ismael , Zalla Jocelito
Published: June 2019

História e Ficção em Call of Duty 3
Morro Santana: Impactos da Urbanização
Authors: Moresco de Moura Alexsandra , Suertegaray Rossato Maíra
Published: June 2019

Morro Santana: Impactosda Urbanização