bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of the conditioning technique of a lithium disilicate vitroceramic
Authors: Nolasco Gisele Maria Correr , Guimarães Genine Moreira de Freitas , Bressan Ricardo , Ronchi Rafaella , Gonzaga Carla Castiglia , Furuse Adilson Yoshio 
Published: November 2018

Introduction: Lithium disilicate reinforced glass ceramics are materials that require good adhesion to ensure clinical success. Objective: To evaluate the bond strength of resin cements to lithium-disilicateenhanced vitroceramics using different cleaning techniques of recently conditioned ceramics. Material and methods: Twelve ceramic discs (IPS Empress II) were made and inserted into PVC pipes using acrylic resin. The ceramic surface was designed and submitted to a 10% hydrofluoric acid conditioning process for 20s. Then, the specimenswere divided into 3 groups (n = 16) according to the cleaning techniques of recently conditioned ceramics: 1) control - conventional technique (no cleaning after the conditioning process); 2) application of 37% phosphoric acid for 20s; 3) 90% ethyl alcohol bath in a ultrasound tub for 4 min. After cleaning, the silane agent was applied for 1 minute and silicon matrices (1 mm in diameter x 1 mm in height) were made for further application of the resin cement (Vitique, DMG), which was handled according to the manufacturer’s instructions. Four cylinders were prepared on each ceramic surface. The specimens were storedin distilled water for 48 hours and subjected to the micro-shear test in a universal testing machine. After the micro-shear test, a failure analysis of the specimens was performed. Data were submitted to ANOVA (analysis of variance for a criterion) with a significance level of 5%. Results: There was no significant difference between groups (p > 0.05). Conclusion: the cleaning technique of the recently conditioned ceramics does not interfere with the resin/cement bond strength values
Breath-Holding Spells in Pediatrics: A Narrative Review of the Current Evidence
Authors: Leung Alexander K.C. , Leung Amy A.M. , Wong Alex H.C. , Hon Kam Lun 
Published: November 2018

Background:Breath-holding spells are common, frightening, but fortunately benign events. Familiarity with this condition is important so that an accurate diagnosis can be made.Objective:To familiarize physicians with the clinical manifestations, diagnosis, evaluation, and management of children with breath-holding spells.Methods:A PubMed search was completed in Clinical Queries using the key term "breath-holding spells". The search strategy included meta-analyses, randomized controlled trials, clinical trials, observational studies, and reviews. Only papers published in the English literature were included in this review. The information retrieved from the above search was used in the compilation of the present article.Results:Breath-holding spells affect 0.1 to 4.6% of otherwise healthy young children. The onset is usually between 6 and 18 months of age. The etiopathogenesis is likely multifactorial and includes autonomic nervous system dysregulation, vagally-mediated cardiac inhibition, delayed myelination of the brain stem, and iron deficiency anemia. Breath-holding spells may be cyanotic or pallid. The former are usually precipitated by anger or frustration while the latter are more often precipitated by pain or fear. In the cyanotic type, the child usually emits a short, loud cry, which leads to a sudden involuntary holding of the breath in forced expiration. The child becomes cyanosed, rigid or limp, followed by a transient loss of consciousness, and a long-awaited inspiration and resolution of the spell. In the pallid type, crying may be minimal or “silent”. The apneic period in the pallid type is briefer than that in the cyanotic type prior to the loss of consciousness and posture. The episode in the pallid type then proceeds in the same manner as a cyanotic spell except that the child in the pallid type develops pallor rather than cyanosis. In both types, the entire episode lasts approximately 10 to 60 seconds. The spells usually disappear spontaneously by 5 years of age.Conclusion:Although breath-holding spells are benign, they can be quite distressing to the parents. Confident reassurance and frank explanation are the cornerstones of treatment. Underlying cause, if present, should be treated. Interventions beyond iron supplementation may be considered for children with severe and frequent breath-holding spells which have a strong impact on the lifestyle of both the child and family.
Molecular Analysis of Uropathogenic E.coli Isolates from Urinary Tract Infections
Authors: Valadbeigi Hassan , Esmaeeli Elham , Ghafourian Sobhan , Maleki Abbas , Sadeghifard Nourkhoda 
Published: November 2018

Introduction:
The aim of the current study was to investigate the prevalence of virulence
genes in uropathogenic Escherichia coli (UPEC) isolates in Ilam.

Materials and Methods:
For this purpose, a total of 80 UPEC isolates were collected for patients
with UTIs during a 6 months period. The multiplex polymerase chain reaction (multiplex PCR) was
used to detect the papEF, fimH, iucD, hlyA, fyuA, and ompT genes.

Results:
The prevalence of fimH, papEF, iucD, fyuA, hlyA, hlyA, and ompT genes were 87.5%,
47.5%, 60%, 67.5%, 27.5%, 47.5% and 71.2%, respectively. Among all of the isolates, 27 profiles
were obtained.

Conclusion:
Our findings demonstrated that the most prevalence was found for fimH, and different
distribution of virulence genes suggested different ability of pathogenicity.
Evaluation of Glucose and Lipid Lowering Activity of Arganimide A in Normal and Streptozotocin-Induced Diabetic Rats
Authors: Eddouks Mohamed , Khallouki Farid , Owen Robert W. , Hebi Morad , Burcelin Remy 
Published: November 2018

Aims:Arganimide A (4,4-dihydroxy-3,3-imino-di-benzoic acid) is a compound belonging to a family of aminophenolics found in fruit of Argania spinosa. The purpose of this study was to investigate the glucose and lipid lowering activity of Arganimide A (ARG A).Methods:The effect of a single dose and daily oral administration of Arganimide A (ARG A) on blood glucose levels and plasma lipid profile was tested in normal and streptozotocin (STZ) diabetic rats at a dose of 2 mg/kg body weight.Results:Single oral administration of ARG A reduced blood glucose levels from 26.50±0.61 mmol/L to 14.27±0.73 mmol/L (p<0.0001) six hours after administration in STZ diabetic rats. Furthermore, blood glucose levels were decreased from 5.35±0.30 mmol/L to 3.57±0.17 mmol/L (p<0.0001) and from 26.50±0.61 mmol/L to 3.67±0.29 mmol/L (p<0.0001) in normal and STZ diabetic rats, respectively, after seven days of treatment. Moreover, no significant changes in body weight in normal and STZ rats were shown. According to the lipid profile, the plasma triglycerides levels were decreased significantly in diabetic rats after seven days of ARG treatment (p<0.05). Moreover, seven days of ARG A treatment decreased significantly the plasma cholesterol concentrations (p<0.001).Conclusion:ARG A possesses glucose and lipid-lowering activity in diabetic rats and this natural compound may be beneficial in the treatment of diabetes.
Approaches to modeling occurrence of rolling contact fatigue damages in rails
Authors: Zakharov S. M. , Torskaya E. V. 
Published: November 2018

Rolling contact-fatigue damages of rails along with their wear are the most common types of rail defects. In recent years, there have been significant changes in the distribution of rolling contact fatigue damages of rails especially on railways operating under heavy haul conditions.This paper is devoted to the overview of approaches to modeling of the occurrence of rolling contact fatigue (RCF) damages on working surfaces of rails. Four types of such approaches to modeling are considered. The first is based on the methods of contact mechanics. To realize it, the vehicle movement on the characteristic sections of the track is modeled, the forces acting in contact are determined, the contact problem is solved, and the values of the linear criterion of contact fatigue damage are determined. The required characteristics of rolling contact fatigue of the rail material are established on the basis of laboratory tests. The second approach uses the diagram of the adaptability of rail material to cyclic loads, proposed by K. Johnson, established on the basis of laboratory tests. The third approach uses criteria that have the physical meaning of the energy released at the contact as an index of the product of the tangential force in contact and relative slippage. In the fourth approach predicting the accumulation of plastic deformation under conditions of cyclic loading is performed on the basis of a series of standard tests of rail steels, including in the welded joint zone, and finite element modeling. In addition, there is also a probabilistic model, based on the assumption that it is possible to transfer the results of the RCF damage of rails on the experimental section of the road to any other site.As the conclusion the authors formulated directions for further studies on the formation and development of surface rolling contact fatigue defects in rails.
Development of an improved wheel profile for a freight car. Theoretical justification
Authors: Orlova A. M. , Savushkin R. A. , Fedorova V. I. 
Published: November 2018

With the increasing loads on the axle and speeds, the increase in wear resistance and resistance to contact fatigue of the wheels is of particular importance. In part, this result was achieved using a standard profile according to GOST 10791–2011 with the use of more efficient spring suspension. A further reduction in the wear rate of both the rolling surface and the flange can be achieved by developing a new wheel profile.The authors have developed a technique that allows, based on theoretical calculations and experimental observations, to make the choice of the shape of the wheel profile, consistent with the profiles of the rails. The results of measurements of the wheels of cars of the model 12-9853 installed on bogies 18-9855 were used as the initial data, which were under controlled operation. The profile development consisted of four main stages: the choice of baseline data, the choice of the curvature of the rolling surface, the choice of the curvature of the transition section to the throttle, and the choice of the flange thickness and radius of the throttle in the transition zone to the rolling surface.The technique was used to develop a new wheel profile that differs from the profile according to GOST 10791–2011 in that the rolling surface is made with three conjugate radii, respectively from the wheel to the flange: 500, 325 and 87.5 mm. The flange throttle radius of the developed profile is 17 mm, the angle of inclination of the flange to the horizontal is 68°, and the thickness of the flange is 32.5 mm. A part of the wheel surface from the wheel to the outer part of the rim fully complies with GOST 10791–2011. Calculations showed that the contact zone of the wheel with the VNITsTT profile relative to the rail is shifted from the center to the flange and the contact area is larger. It was found that for the VNITsTT wheel profile the ratio of the semi-axes of the ellipse of contact spots is lower than for the profile according to GOST 10791–2011.
Peningkatan vigor kelapa sawit melalui pengayaan kecambah dengan Trichoderma asperellum, Cendawan Mikoriza Arbuskular dan Enterobacter sacchari Increasing of oil palm seedling vigor through seed enrichment with Trichoderma asperellum, Arbuscular Mycorrhizal Fungi, and Enterobacter sacchari)
Authors: UTAMI Esty Puri , WIDAJATI Eny , PALUPI Endah Retno , TORUAN-MATHIUS Nurita 
Published: November 2018

Oil palm is a leading commodity of the plantation sector in Indonesia. Improving the quality of oil palm still be carried out to increase production. Seed technology can be used as an effort to improve the quality of oil palm seeds. The aim of this experiment was to determine the effect of seed enrichment with consortium of three microbes to increase vigor of oil palm seedling in pre nursery stage. The experiment design of this reseach was using completely randomize block design consisted of two factors. The first was seed coating consist of two factors, ie: coated seed and uncoated seed. Second was seed enrichment consist of eight factors, ie: control, enrichment with E. sacchari, abruscular mycorrhizal fungi (AMF), T. asperellum, E. sacchari+ AMF, E. sacchari+ T. asperellum, AMF + T. asperellum, E. sacchari+ AMF + T. asperellum. The result showed that enrichment with consortium of three microbes could increase vigor of oil palm seedling based on seedling germination, rate of germination, palm height, and numbers of survival seedling.[Keywords:biological agent, compatibility, diazotroph] Abstrak *) Penulis korespondensi: eny.widajati61@gmail.com Kelapa sawit adalah komoditas unggulan sektor perkebunan di Indonesia. Peningkatan mutu kelapa sawit terus dilakukan agar mening-katkan produksinya. Teknologi benih dapat digu-nakan sebagai salah satu upaya peningkatan mutu benih kelapa sawit. Penelitian ini bertujuan untuk menetapkan pengaruh pengayaan konsorsium tiga mikroba, E. sacchari,T. asperellumdan cendawan mikoriza arbuskular (CMA) dan pelapisan kecambah terhadap peningkatan vigor bibit kelapa sawit di pre nursery. Percobaan dirancang dengan rancangan acak kelompok dengan dua faktor, yaitu pelapisan dan pengayaan. Pelapisan terdiri dari dua taraf, yaitu dengan pelapisan dan tanpa pelapisan. Pengayaan terdiri dari 8 taraf, yaitu kontrol, pengayaan dengan E. sacchari, CMA, T. asperellum, E. sacchari+ CMA, E. sacchari + T. asperellum,CMA + T.asperellum,E. sacchari+ CMA + T. asperellum. Hasil penelitian menunjukkan bahwa pengayaan dengan konsor-sium tiga mikroba dapat meningkatkan vigor bibit kelapa sawit berdasarkan parameter daya tumbuh, kecepatan tumbuh, tinggi bibit, dan jumlah bibit yang hidup. [Kata kunci: agen hayati, diazotrop, kompa-tibilitas]
Sintesis karboksimetil selulosa dari sisa baglog jamur tiram (Pleurotus ostreatus) (Synthesis of carboxymethyl cellulose from ex-baglog of oyster mushroom (Pleurotus ostreatus))
Authors: DIMAWARNITA Firda , PANJI TRI - 
Published: November 2018

Oil palm empty fruit bunches (OPEFB) contain high organic materials that can be used as medium for growing white oyster mushroom (Pleurotus ostreatus).Cellulose content in the OPEFB is high (33%), enabling it to be converted to carboxymethyl cellulose (CMC). This study determined the characteristics of the CMC produced from the waste of growth media of oyster mushrooms (baglog). The composition of the baglog consists of 70.3% OPEFB; 23.4% sawdust; 4.5% bran; 1.3% CaCO3; and 0.4% TSP. The CMC was prepared from the ex-baglog of the mushrooms including delignification, alkalization, carboxylation, and characterization of the product using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Difraction (XRD) and Scanning Electron Microscopy Analysis (SEM). The results showed that the raw material after treatment contained 80.20% a cellulose, 12.32% hemicellulose, and no lignin was found. FTIR-based functional group analysis of the CMC and the commercial CMC was found to be present at 1091,37 cm-1and 1016,84 cm-1for the C-O bond. SEM analysis of the sample with no chemical bleaching for further delignification showed that small impurities were still present. The CMC treated with 10% sodium hydroxide exhibited 0.64 degree of substitution, 43 cP viscosity, and 73.40% purity. Based on these results, ex-baglog of white oyster mushroom can be extracted into CMC.[Keywords:OPEFB, CMC, delignification, Pleurotus ostreatus, XRD, SEM]. Abstrak Tandan kosong kelapa sawit (TKKS) mengandung bahan organik tinggi yang bisa dijadikan sebagai media pertumbuhan jamur tiram putih (Pleurotus ostreatus). Kandungan selulosa dalam TKKS (33%) yang mungkin dikonversi menjadi karboksimetil selulosa (CMC). Penelitian ini bertujuan mencirikan CMC yang dihasilkan dari limbah media pertumbuhan jamur tiram (baglog). Komposisi baglog sebagai media pertumbuhan jamur tersebut terdiri atas TKKS 70,3%; serbuk gergaji 23,4%; dedak 4,5%; CaCO31,3%; dan TSP 0,4%. Penyiapan CMC dari ex-baglog jamur meliputi delignifikasi, alkalisasi, karboksilasi, dan karakterisasi produk CMC dengan analisis Fourier Transform Infrared Spetroscopy(FTIR), X-Ray Difraction(XRD) dan Scanning Electron Microscopy(SEM). Hasil penelitian menunjukkan bahwa ex-baglog setelah perlakuan mengandung ɑ-selulosa sebanyak 80,20%, hemiselulosa 12,32%, lignin 0%, dan sisanya merupakan impurities(b/b). Gugus fungsi CMC dari TKKS dan CMC komersial memperlihatkan serapan inframerah pada 1091 cm-1dan 1017 cm-1untuk ikatan C-O. Analisis dengan mikroskop elektron menunjukkan bahwa tanpa delignifikasi lebih lanjut, masih ditemukan kotoran. Karakteristik CMC yang diolah dengan natrium hidroksida 10% memiliki derajat substitusi 0,64, viskositas 43 cP, dan kemurnian 73,40%. Hasil tersebut menunjukkan bahwa sisa baglog perumbuhan jamur tiram dapat diekstraksi menjadi CMC. [Kata kunci:TKKS, CMC, delignifikasi, Pleurotus ostreatus, XRD, SEM].
Embriogenesis somatik dari pucuk tunas tanaman kurma (Phoenix dactylifera L.) Somatic embryogenesis from shoot tip of date palm (Phoenix dactylifera L.))
Authors: SAPTARI Rizka Tamania , SUMARYONO . 
Published: November 2018

Date palm (Phoenix dactylifera L.) is the most important crop in the dry areas of the Middle East and North Africa. This palm has been introduced to many countries but has not been grown commercially in Indonesia. Date palm propaga-tion by seeds is easy but its progenies are varied and a half of them are male trees that will not produce fruits. Meanwhile, the propagation by offshoots is impractical and technically difficult. Tissue culture makes it possible to massproduce of genetically identicalsuperior date palms. This research aimed to develop somatic embryogenesis (SE) of date palm using shoot tipand young leaves of date palm seedling as explants. Steps on somatic embryogenesis are explant sterilization, callus initiation and proliferation, somatic embryos induction and maturation, and plantlets matura-tion and rooting. Calli emerged from shoot tip explants after 9 weeks of culture in a modified MS medium supplemented with 10 mg/L 2,4-D, 1 mg/L or 3 mg/L 2-iP, and 1.5 g/L active charcoal. The callus was able to bear somatic embryo in the modified MS medium without hormones. Somatic embryos then developed into plantlets, and roots of plantlets were effectively initiated in the medium supplemented with 0.5 mg/L NAA and 1 mg/L IBA.[Keywords:sterilization, callogenesis, somatic embryo induction, plantlet rooting, clonal propagation]. Abstrak Tanaman kurma (Phoenix dactyliferaL.) merupakan tanaman terpenting di wilayah kering Timur Tengah dan Afrika Utara. Palma ini telah menyebar ke banyak negara, namun belum ditanam secara komersial di Indonesia. Perbanyakan kurma dengan biji sangat mudah tetapi turunannya sangat beragam dan setengahnya merupakan tanaman jantan yang tidak berbuah. Perbanyakan dengan anakan (offshoots) secara komersial tidak praktis dan relatif sulit. Kultur jaringan memungkinkan untuk dihasilkan secara massal bibit tanaman kurma varietas unggul yang secara genetik seragam. Penelitian ini bertujuan untuk mengembangkan embriogenesis somatik menggunakan eksplan pucuk tunasdan daun muda dari bibit tanaman kurma. Pengembangan embriogenesis somatik terdiri dari tahap sterilisasi eksplan, inisiasi dan proliferasi kalus, induksi dan maturasi embrio somatik, serta pembesaran dan pembentukan akar planlet. Kalus terbentuk dari eksplan pucuk tunassetelah 9 minggu dikultur pada medium MS modifikasi yang ditambahkan 2,4-D 10 mg/L, 2-iP 1 mg/L atau 3 mg/L, dan arang aktif 1,5 g/L.Kalus berhasil diinduksi menghasilkanembrio somatik pada medium MS modifikasi tanpa penggunaan hormon. Embrio somatik kemudian berkembang hingga menjadi planlet, dan akar planlet secara efektif terinisiasipada medium yang ditambahkan NAA 0,5 mg/L dan IBA1 mg/L. [Kata kunci :sterilisasi, kalogenesis, induksi embrio somatik, pengakaran planlet, propagasi klonal].
Emerging Barrier to Timely Care of Hip Fracture Patients: A Prospective Study of Direct Oral Anticoagulation and Time to Surgery
Authors: Sabo Marlis T , Mahdi Fatima , Clark Marcia 
Published: November 2018

Introduction: Rapid surgical management of hip fracture patients is critical to reduce morbidity and mortality. These patients may be anti-coagulated and the new direct oral anticoagulants (DOAC) may introduce delays to treatment. Our purpose was to examine the impact of these DOAC on time to surgical management for hip fracture patients.Methods: A prospective audit of 55 consecutive operative hip fracture patients examined time from diagnosis to surgery. Indications for anticoagulation were recorded.Results: Time to surgery for the DOAC group was 66±16 hours, versus 38±21 and 25±19 hours for warfarin and control groups, respectively (P<0.05). Anticoagulation was for atrial fibrillation in 93%.Conclusion: Patients on DOAC faced significant delays to surgery. Given that both DOAC use and incidence of hip fracture are expected to rise, this presents a barrier to optimized care in this vulnerable group.
O mercado de trabalho dos profissionais da informação do Rio de Janeiro e Niterói
Authors: Lopes Luís Carlos 
Published: November 2018

Trata-se de um artigo escrito a partir de um relatório de uma pesquisa exploratória sobre o mercado de trabalho dos profissionais da informação. O autor enfoca o problema das quantidades e qualidades dos acervos e do pessoal envolvido. Destaca as insuficiências e inúmeros problemas relacionados ao funcionamento de arquivos, museus e bibliotecas na cidade do Rio de Janeiro e em Niterói.
Os estudos de recepção e as relações de gênero: algumas anotações provisórias
Authors: D. Escosteguy Ana Carolina 
Published: November 2018

O trabalho trata da incorporação da categoria de gênero pelos estudos de recepção na América Latina. Esses estudos estão adotando a categoria de gênero, fundamentalmente, para indicar uma distinção sexual entre feminino e masculino, isto é, como uma variável sócio-demográfica. Em outros casos, a mesma categoria pode até ser associada a papéis sociais - por exemplo, mãe, dona-de-casa -, mas essas atuações específicas não contribuem para explicar certos processos sociais e seus resultados objetivos. Enfim, o propósito é apresentar algumas anotações que subsidiam uma das premissas da investigação que atualmente estou desenvolvendo.
A dinâmica dos atos de linguagem em listas de discussão
Authors: Ferreira Jairo 
Published: November 2018

Aparentemente, a questão chave da cooperação é o reconhecimento mútuo dos interlocutores. Essa hipótese é parcialmente válida, desde que este reconhecimento não seja visto como uma decorrência direta de um contrato. A questão do reconhecimento ultrapassa o contrato formal de lugares institucionais, para se sustentar em outras instâncias da vida social, além do compartilhamento, reciprocidade e conservação das proposições através de atos de linguagem, das representações concretas e da prática. Nesse sentido, as interações discursivas constituem-se numa sucessão de estruturas instáveis e estáveis encadeadas entre si, o que implica em formas de equilíbrio (e, portanto, de cooperação) específicas em redes digitais.
Produtos midiáticos, estratégias, recepção: A perspectiva transmetodológica
Authors: Torre Alberto Efendy Maldonado Gómez de la 
Published: November 2018

O artigo aborda a problemática epistemológica em comunicação, formulando uma proposta transmetodológica para a pesquisa na área. Os processos comunicacionais são reflitos numa linha que articula midiatização e mediações, argumentando sobre as estruturações tecnoistóricas, as mudanças culturais, os campos sociais e a hegemonia midiática.