bluuebunny/crossref_metadata_2025 huggingface dataset:
Conformal Coating of Orthopedic Plates with X-Ray Scintillators and pH Indicators for X-Ray Excited Luminescence Chemical Imaging Through Tissue.
Authors: Uzair Unaiza , Johnson Chloe , Beladi-Behbahani Shayesteh , Benza Donald , Raval Yash , Ranasinghe Meenakshi , Schober Gretchen , Tzeng Tzuen-Rong , Anker Jeffrey
Published: June 2020

We describe a material that allows for high spatial resolution pH mapping through tissue using X-ray excited luminescence chemical imaging (XELCI). This is especially useful for detecting implant associated infection and elucidating how the local biochemical environment changes during infection and treatment. To acquire one pixel in the image, a focused X-ray beam irradiates a small region of scintillators coated on the implant and the X-ray excited optical luminescence spectrum is modulated by indicator dyes to provide a chemically sensitive measurement with low background. Scanning the X-ray beam across the implant surface generates high spatial resolution chemical measurements. Two associated challenges are 1) to make robust sensors that can be implanted in tissue to measure local chemical concentrations and specifically for metal orthopedic implants, and 2) to conformally coat the implant surface with scintillators and pH indicator dyes in order to make measurements over a large area. Previously, we have physically pressed or glued a pH-sensitive hydrogel sensor to the surface of an implant, but this is impractical for imaging over large irregular device areas such as an orthopedic plate with holes and edges. Herein we describe a chemically sensitive and biocompatible XELI sensor material containing scintillator particles (Gd2O2S:Eu) and a pH sensitive hydrogel coating using a roughened epoxy coating. A two-part commercial grade epoxy film was tested and found to make the coating of pH sensitive layer adhere better to the titanium surface. Sugar and salt particles were added to the surface of the epoxy as it cured to create a roughened surface and increase surface area. On this roughened surface, a secondary layer of diacrylated polyethylene glycol (PEG) hydrogel, containing a pH sensitive dye, was polymerized. This layer was found to adhere well to the epoxy-coated implant unlike other previously tested polymer surfaces which delaminated when exposed to water or humidity. The focused X-ray beam enabled 0.5 mm spatial resolution through 1 cm thick tissue. The pH sensor coated orthopedic plate was imaged with XELCI through tissue with different pH to acquire a calibration curve. The plates were also imaged through tissue with low pH region from a Staphylococcus aureus biofilm grown on one section. These studies demonstrate the use of pH sensor coated orthopedic plates for mapping the surface pH through tissue during biofilm formation using XELCI.
Liquid-Phase Peak Force Infrared Microscopy
Authors: Wang Haomin , González-Fialkowski Joseph M. , Li Wenqian , Yu Yan , Xu Xiaoji
Published: June 2020

Atomic force microscopy-infrared microscopy (AFM-IR) provides a route to bypass Abbe’s diffraction limit through photothermal detections of infrared absorption. With the combination of total internal reflection, AFM-IR can operate in the aqueous phase. However, AFM-IR in contact mode suffers from surface damage from the lateral shear force between the tip and sample, and can only achieve 20~25-nm spatial resolution. Here, we develop the liquid-phase peak force infrared (LiPFIR) microscopy that avoids the detrimental shear force and delivers an 8-nm spatial resolution. The non-destructiveness of the LiPFIR microscopy enables in situ chemical measurement of heterogeneous materials and investigations on a range of chemical and physical transformations, including polymer surface reorganization, hydrogen-deuterium isotope exchange, and ethanol-induced denaturation of proteins. We also perform LiPFIR imaging of the budding site of yeast cell wall in the fluid as a demonstration of biological applications. LiPFIR unleashes the potential of in liquid AFM-IR for chemical nanoscopy.
Computationally Assisted Design of High Signal-to-Noise Photoinduced Electron Transfer-Based Voltage-Sensitive Dyes
Authors: Kulkarni Rishikesh , Gest Anneliese , Lam Chun Kei , Raliski Benjamin , James Feroz , Adil Maroof , Schaffer David , Wang Yi , Miller Evan
Published: June 2020

High signal-to-noise optical voltage indicators will enable simultaneous interrogation of membrane potential in large ensembles of neurons. However, design principles for voltage sensors with high sensitivity and brightness remain elusive, limiting the applicability of voltage imaging. In this paper, we use molecular dynamics (MD) simulations and density functional theory (DFT) calculations to guide the design of a bright and sensitive green-fluorescent voltage-sensitive fluorophore, or VoltageFluor (VF dye), that uses photoinduced electron transfer (PeT) as a voltage-sensing mechanism. MD simulations predict an 11% increase in sensitivity due to membrane orientation, while DFT calculations predict an increase in fluorescence quantum yield, but a decrease in sensitivity due to a decrease in rate of PeT. We confirm these predictions by synthesizing a new VF dye and demonstrating that it displays the expected improvements by doubling the brightness and retaining similar sensitivity to prior VF dyes. Combining theoretical predictions and experimental validation has resulted in the synthesis of the highest signal-to-noise green VF dye to date. We use this new voltage indicator to monitor the electrophysiological maturation of human embryonic stem cell-derived medium spiny neurons.
Breaching the Axial Limits in Ln(III) Single-Ion Magnets Using External Electric Field
Authors: Sarkar Arup , Gopalan Rajaraman
Published: June 2020

Single-Molecule Magnets have potential applications in several nano-technology applications including in high-dense information storage devices and realization of this potential application lies in enhancing the barrier height for magnetization reversal (Ueff). Recent literature examples suggest that the maximum values that one can obtain using a ligand field are already accomplished. Here we have explored using a combination of DFT and ab initio CASSCF calculations, the way to enhance the barrier height using an oriented external electric field for top three Single-ion Magnets ([Dy(Py)5(OtBu)2]+ (1) and [Er{N(SiMe3)2}3Cl]- (2) and [Dy(CpMe3)Cl] (3)). For the first time our study reveals that, for apt molecules, if appropriate direction and value of electric fields are chosen, the barrier height could be enhanced twice that of the limit set by the ligand field. This novel non-chemical-fine tuning approach to modulate the magnetic anisotropy is expected to yield new generation SIMs.
Minimizing HCN in DIC/Oxyma Mediated Amide Bond Forming Reactions
Authors: Erny Marion , Lundqvist Marika , Rasmussen Jon H. , Ludemann-Hombouger Olivier , Bihel Frédéric , Pawlas Jan
Published: June 2020

Aiming at advancing protocols for safer, environmentally sensible peptide synthesis we report our findings with regards to the occurrence of hydrogen cyanide (HCN, prussic acid) in amide bond forming reactions mediated by diisopropylcarbodiimide (DIC) and ethyl (hydroxyimino)cyanoacetate (Oxyma). We have determined that HCN is always formed in amide bond forming reactions on solid support in N,N-dimethylformamide (DMF) when employing DIC/Oxyma. In an attempt to minimize the formation of prussic acid by means of preventing the linear DIC/Oxyma adduct 2 from cyclizing to oxadiazole 3 and in turn releasing HCN, we evaluated a series of greener solvents such as N-butylpyrrolidinone (NBP), NBP/ethyl acetate (EtOAc, 1:1), methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate (PolarClean, PC), and PC/EtOAc (1:1). We found that the ratio between 2 and 3 greatly depends on the solvent used and consequently, we further examined DMF, NBP, NBP/EtOAc (1:1) and NBP/EtOAc (1:4) as solvents for DIC/Oxyma mediated amidations on solid support and in solution. We found that using carboxylic acid/Oxyma/DIC in a 1:1:1 ratio the rate of HCN formation decreases in the following order DMF>NBP>NBP/EtOAc (1:1)>NBP/EtOAc (1:4) while the reaction rate increases in order of DMF~NBPin situ scavenging of the HCN formed. We carried out DIC/Oxyma mediated amidation of Fmoc-Gly-OH + (S)-(-)-1-phenylethylamine in DMF-d7 with 0, 5 and 10 equiv of dimethyl trisulfide (DMTS) as HCN scavenger. The formation of HCN and rate of amidation was monitored by 1H NMR, revealing that DMTS scavenges HCN without inhibiting the rate of amidation. DIC/Oxyma mediated amidations of Fmoc‑Ser(t‑Bu)‑OH with (S)-(‑)-1-phenylethylamine in DMF and NBP/EtOAc (1:4) with and without 10 equiv of DMTS were carried out and found to be comparable.
Study Of Incisional Hernia At A Tertiary Care Teaching Hospital
Authors: Mangesh Padamwar  , Anupam Kakade  , Ajonish Kamble  , Yashwant Lamture  , Meenakshi Yeola
Published: June 2020

Incisional hernia affects all age groups and involve both male and females. It can be defined as hernia which protrudes through surgical wound which was healed incompletely. Management of incisional hernia requires operative intervention most of the times it may laparoscopic repair with synthetic non-absorbable mesh or open anatomical repair.In partnership with Jawaharlal Nehru Medical College AVBR Hospital (Datta Meghe Institute of Medical Sciences) Sawangi (Meghe), Wardha, Maharashtra, this work was performed in the Department of General Surgery at Datta Meghe Medical College and Shalinitai Meghe Hospital and Research Centre ,Hingna , Nagpur. Over a period of 1 year 59 cases of diagnosed incisional hernia were included.33 males and 26 females were included. The mean age was years. Most common cause of Incisional Hernia (IH)  post-operative wound infection(49.15%). In maximum cases history suggestive of emergency surgery(86.44%).Type of incision suggests maximum cases in midline incision (55.93%) followed by Pffanensteils incision (28.81%).Open mesh hernioplasty was the common procedure (57.62%) ,Lap mesh hernioplasty done in (25.42%)cases and (16.94%) cases were treated by suture repair. There was no evidence of recurrence in laparoscopic repair as open mesh hernioplasty has a recurrence rate of 03.57% and suture repair cases showed 33.33% recurrence.Incisional Hernia and its occurrence can be taken care of by implementing all standard aseptic precautions thereby avoiding chances of infection at the time of primary surgery wherein thorough peritoneal wash, proper techniques of wound closure and use of appropriate antibiotics is recommended. Management of IH with Laparoscopic mesh repair has its own advantage in terms of less hospital stay, negligible rate of recurrence though it is not cost effective at present scenario.
Monosemptomatik Nokturnal Enürezis Tedavisinde Desmopressin ile Kombine Edilen Alarm Tedavisinin Etkinliği
Authors: BICILIOĞLU Yüksel , BAK Mustafa , SERDAROĞLU Erkin
Published: June 2020

Amaç: Geriye dönük olarak yapılan çalışmamızda amaç; monosemptomatik nokturnal enürezis tedavisinde kullanılan desmopressin, alarm ve kombine tedavileri karşılaştırmaktır.Materyal ve Metot: Monosemptomatik noktürnal enürezis tanısı alan hastalar geriye dönük olarak değerlendirildi. Desmopressin (33 hasta), alarm (34 hasta) ve kombine (34 hasta) tedavi başlanan toplam 101 hasta (67 erkek/34 kız) çalışmaya dahil edildi. Yaş ortalaması 10,7±2,4 yıl (5-16 yaş) saptandı. Hastaların tıbbi öyküsü, fizik muayene bulguları, özgeçmiş ve soygeçmişi, verilen tedavi bilgileri kayıt altına alındı. Tedavi başlanmadan 1 ay önceki, tedavi süresi ve tedavi kesildikten sonraki dokuz haftalık izlem süresi boyunca ıslak gece sayıları tespit edildi. Tedaviye yanıt ve sonrasında nüks oranları tespit edildi.Bulgular: Tedavi öncesi ıslak gecelerin ortalaması ayda 14,9±6,1 gün bulundu. Aylık ıslak gece sayısı tedaviden sonra her üç tedavi grubunda da anlamlı olarak azaldı (desmopressin; 14,5±5,7 ila 4,8±6,5; p<0,001, alarm; 14,1±5,9 ila 2,9±4,1; p<0,001, kombine tedavi;16,2±6,9 ila 1,9±2,5; p<0,001). Tedavi başarısı (ıslak gecelerde>%50 azalma) ve tam yanıt (%100 kuru) oranları desmopresin, alarm ve kombine tedavi gruplarında sırasıyla %79, %91 ve %97, %30 ve %27, %35 idi. Başarılı tedavi edilen hastalarda nüks oranları desmopresin, alarm ve kombine tedavi grubunda sırasıyla % 67, % 11 ve % 22 (p=0,002) saptandı.Sonuç: Alarm tedavisi, düşük nüks oranları ve yan etki olmaması nedeniyle en iyi tedavi seçeneği olarak karşımıza çıkmaktadır. Desmopressin tedavisinde yüksek oranda nüks saptanmıştır.
The Relationship Between Insulin Resistance and Trace Elements in Patients With Polycystic Ovary Syndrome
Authors: BALAHOROGLU Ragip , ZİREK Ali Kemal , ÇOKLUK Erdem , ATMACA Murat , ŞEKEROĞLU Mehmet , HUYUT Zübeyir
Published: June 2020

Objective: The study was investigate serum zinc (Zn), chromium (Cr), cobalt (Co) and manganese (Mn) concentrations in relation to hormone levels and polycystic ovary syndrome (PCOS).Materials and Methods: Fourty women between 18-40 years of age diagnosed with PCOS. We also seleceted 40 healty volunteers as the control group. Serum Zn, Cr, Mn, follicular stimulating hormone (FSH), luteinizing hormone(LH), Dehydroepiandrosterone sulfate (DHEA-S), total testosterone (TT), sex hormone binding globulin (SHBG), insulin, glucose, cholesterol, triglyceride, High Density Lipoprotein (HDL-C) and Low density lipoprotein (LDL-C) concentrations were determined. Results: Insulin, glucose, triglyceride, DHEA-S levels were significantly higher in the PCOS group than in the control group, while FSH and Mn levels were significantly lower in the HOMA-IR group than in the control group (p< 0.05). Conclusions: A possible association is perceptible in our study between some of serum trace elements and women with PCOS. The association attains a connotative level with the involvement of IR in it. Additional studies evaluating the effects of these elements supplementation would be required to confirm the hypothesis as well as to ascertain whether insulin resistance in the presence of manganese deficiency can directly lead to oxidative stress.
Examination of Self-Efficacy and Participation Restrictions in Y and Z Generations
Authors: BELHAN Sümeyye , ÖZKAN Esma , YARAN Mahmut
Published: June 2020

Objective: The aim of this study was to investigate the self-efficacy and participation restrictions of individuals in the Y and Z generations. Materials and Metods: Participation Scale was applied to evaluate the participation of individuals in the Y and Z generation included in the study. Self-efficacy of individuals in Generation Y was assessed with Self-Efficacy Scale, participants in Generation Z was assessed with Secondary School Self-Efficacy Scale. 40 individuals from generation Y and Z were included in the study. Results: There was no statistically significant difference between the mean self-efficacy scores of individuals in the Y and Z generations (p>0.05). There was a statistically significant difference between the participation restrictions in the Y and Z generations (p<0.05) The relationship between self-efficacy and participation restriction in generation Y and Z was found to be statistically significant (p<0.001). Conclusion: Individuals in the Z generation tend to experience more participation restriction due to them taking part in the high school entrance exam, being financially dependent on family for activities they want to participate in, and undergoing adolescent mood swings. Therefore, it is believed that planning and developing occupational therapy interventions to increase the participation of individuals in this population will be beneficial.
Canlı Donörden Böbrek Nakli: İlk Deneyimlerimiz
Authors: FIRAT Necattin , DHEİR Hamad , AKIN Emrah , SİPAHİ Savaş , ALTINTOPRAK Fatih , ÇELEBİ Fehmi , AKÇAY Mertcan
Published: June 2020

Amaç: Son dönem böbrek yetmezliği belirgin morbidite ve mortalite ile toplumda oldukça yaygındır. Böbrek yetmezliği olan hastalarda, yaşam kalitesini ve sağ kalımı arttırdığı için böbrek nakli etkin bir tedavi seçeneğidir. Bu çalışmanın amacı yeni hizmete giren böbrek nakil merkezindeki ilk sonuçları değerlendirmektir.Materyal ve Metot: Nisan 2019 ile Ekim 2019 tarihleri arasında, Sakarya Üniversitesi Eğitim Araştırma Hastanesi Böbrek Nakil Merkezi’nde böbrek yetmezliği nedeniyle nakil yapılan 20 hasta retrospektif olarak değerlendirildi. Hastaların ve donörlerin demografik özellikleri kaydedildi ve operasyon öncesi ve sonrası laboratuvar sonuçları değerlendirildi. Posttransplantasyon akut komplikasyonları kaydedildi. Verileri uygun istatistik yöntemi (ortalama ±standart sapma ve ortanca(min,max)) ile değerlendirildi.Bulgular: Böbrek alıcıların ortalama yaşı 46,10±11,52 yıl, Vucut kitle indeksi (VKİ) 27,00±6,00 idi ve %40’ı kadın %60’ı erkekti. Nakil yapılan hastaların operasyon sonrası ortalama serum kreatinin 1.gün:3,10±1,60 mg/dl, 7.gün:1,17±0,36 mg/dl, 3.ay:1,07±0,26 mg/dl, 6. Ay:1,10±0,28 mg/dl idi.Sonuç: Son dönem böbrek yetmezliği olan hastalığı olan hastalarda yapılan böbrek nakil operasyonu kısa dönem sonuçlarının başarılı olduğu görülmektedir. Laparoskopik donör nefrektomi uygun vericilerde ilk tercih edilmesi gereken yaklaşımdır. Son dönem böbrek yetmezliği olan hastalara mümkün olduğunca böbrek nakli gerçekleştirilmesi hem hasta sağ kalımı hem de ekonomik maliyet açısından önerilen tedavi yöntemdir.
Unbiased yeast screens identify cellular pathways affected in Niemann–Pick disease type C
Authors: Colaco Alexandria , Fernández-Suárez María E , Shepherd Dawn , Gal Lihi , Bibi Chen , Chuartzman Silvia , Diot Alan , Morten Karl , Eden Emily , Porter Forbes D , Poulton Joanna , Platt Nick , Schuldiner Maya , Platt Frances M
Published: June 2020

Niemann–Pick disease type C (NPC) is a rare lysosomal storage disease caused by mutations in either theNPC1orNPC2genes. Mutations in theNPC1gene lead to the majority of clinical cases (95%); however, the function of NPC1 remains unknown. To gain further insights into the biology of NPC1, we took advantage of the homology between the human NPC1 protein and its yeast orthologue, Niemann–Pick C–related protein 1 (Ncr1). We recreated theNCR1mutant in yeast and performed screens to identify compensatory or redundant pathways that may be involved in NPC pathology, as well as proteins that were mislocalized inNCR1-deficient yeast. We also identified binding partners of the yeast Ncr1 orthologue. These screens identified several processes and pathways that may contribute to NPC pathogenesis. These included alterations in mitochondrial function, cytoskeleton organization, metal ion homeostasis, lipid trafficking, calcium signalling, and nutrient sensing. The mitochondrial and cytoskeletal abnormalities were validated in patient cells carrying mutations inNPC1, confirming their dysfunction in NPC disease.
The Energy Produced By 150 Watt Monocrystalline Solar Panels In Metro City
Authors: Salim Muhammad Barkah , Kusuma Novita Intan , Suseno Nyoto
Published: June 2020

Researchers have conducted research on the energy produced by 150 watt solar panels in the city of metro. This research was conducted because many solar panels have been made, but it has not yet been identified how much energy is actually produced. In addition, to find out whether the city of metro is feasible to use solar panels. The purpose of this study was to determine the energy produced by 150 watt solar panels in the city of metro. The research method used is experimental research. Researchers conducted for five days from 08.00 AM to 04.00 PM. After doing the research, it was found that the energy that could be produced in the solar panel in one day was 876,507 joule. The value of the effectiveness of solar panels in the city of metro has a value of 100% with criteria for proper use.
Problem-Based Learning Approach with Supported Interactive Multimedia in Physics Learning: Its Effects on Critical Thinking Abilty
Authors: Liana Yeni Rima , Nursuhud Puji Iman
Published: June 2020

In this research, interactive multimedia on dynamic electricity concepts was developed and tested. The purpose of this research was to analyze the feasibility and the effectiveness of interactive multimedia through a problem-based learning approach to students’ critical thinking ability. The research and development (R & D) had three stages: preliminary study, development, and field testing. The field testing was a quasi-experiment with a pretest and posttest control group design. The research subjects consisted of four lecturers as expert validators, two teachers and two groups of 72 students in a senior high school in Batang Regency, Central Java. Data were gathered by using questionnaires, observation, interviews, and written test. The results of the Normalized-gain test were 61.79 for the experiment group and 49.91 for the control group. This shows that there were differences in the increase of students' critical thinking ability between the control group and the experiment group.Therefore, it can be concluded that the application of interactive multimedia could improve students' critical thinking ability.
Modelo pedagógico de aprendizagem baseada em projetos para uma formação técnica contextualizada
Authors: Estruch Abadie Marta Liliana , Luz Anatibia Leiva Ema , Vergara Sanfuentes Sofía Carolina
Published: June 2020

O artigo revela a experiência de instalar e implementar a Metodologia Baseada em Projetos (PBL) em centros profissionais de educação técnica no Chile. Isso permitiu sistematizar práticas voltadas para a melhoria da qualidade da educação, formando um modelo pedagógico que pode ser replicado. Ademais, são descritas algumas das ações pedagógicas intencionais importantes para permitir que os alunos aprendam na diversidade, trabalhando uns com os outros, estimulando seu crescimento emocional, pessoal e intelectual.
Experiências de inserção profissional na construção de identidades profissionais de formandos em Educação Física
Authors: Vanzuita Alexandre , Raitz Tânia Regina , Garanhani Marynelma Camargo
Published: June 2020

A presente pesquisa tem por objetivo analisar como as experiências de inserção profissional de formandos(as) em Educação Física contribuem para a construção de identidades profissionais. O estudo é de perspectiva analítico-descritiva de abordagem qualitativa. A produção de dados ocorreu por meio da realização de dois grupos focais. Constatou-se que as experiências de inserção profissional articulam os saberes da prática com os conhecimentos da universidade por meio da pesquisa e estágio e, ao mesmo tempo, causam preocupações e incertezas na transição da universidade ao mundo do trabalho.
Sentidos do trabalho na perspectiva de jovens universitários
Authors: Tibola Naiara Gracia , Raitz Tânia Regina , Caetano Costa de Aquino Daiane
Published: June 2020

Este estudo compreende e analisa os sentidos do trabalho na vida de jovens acadêmicos que participam de um curso de extensão universitária no estado de Santa Catarina. De natureza quantitativa/qualitativa, esta investigação utilizou um questionário estruturado para coletar os dados, que posteriormente foram submetidos a técnicas de análise de conteúdo. Os achados da pesquisa apontam que a compreensão do trabalho está relacionada a valores individuais, reconhecimento social, necessidades financeiras e objetivo de vida.
Escola de roça: limites e inspirações
Authors: Novelino Barato Jarbas
Published: June 2020

Resenha dos livros

NASCIMENTO, Orlando Roberto. Memórias de um professor de antigamente. São Paulo: Editora Senac São Paulo, 2020.

ZIMMERMAN, Jonathan. Small wonder: the little red schoolhouse in history and memory. New Haven: Yale University Press, 2009.
Notas sobre a alimentação de syacium micrurum ranzani, 1842 (actinopterygii: paralichthyidae) no talude continental ao largo da Bahia (nordeste do brasil), oceano atlântico ocidental
Authors: Oliveira-Silva Jailza Tavares de , Lopes Paulo Roberto Duarte , Olavo George
Published: June 2020

São apresentadas informações sobre a biologia de 100 indivíduos de Syacium micrurum Ranzani, 1842 (Actinopterygii: Paralichthyidae) do estado da Bahia (nordeste do Brasil, oceano Atlântico ocidental). Os comprimentos totais variaram entre 80,0 mm e 217,0 mm. O alimento de S. micrurum consiste principalmente de crustáceos Brachyura (siris) e Dendrobranchiata (camarões) mas também em menores proporções de Cephalopoda, Teleostei, Polychaeta e outros grupos de crustáceos.
Wheat Straw Optimization via its Efficient Pretreatment for Improved Biogas Production
Authors: Memon Muhammad Jaffar , Memon Abdul Rehman
Published: June 2020

The complex indigenous configuration of non-bio-labile wheat straw necessitates its pretreatment to optimize the breakdown of its structural components for its ultimate conversion into biogas by means of anaerobic digestion. In this research work, wheat straw was pretreated with potassium hydroxide (KOH) to facilitate its improved biodegradability. The pretreatment of wheat straw was also obvious in terms of its crystallinity resulting in the improved amorphous regions compared to the control wheat straw. The results showed that pretreated wheat straw digestion transpired into comparatively higher removal of TS (86%), VS (89%) and total lignin, cellulose and hemicellulose (22%) than that obtained with control wheat straw. Maximum biogas production accrued was 1550 mLN per day with optimized dosing of KOH compared to 967 mLN per day obtained with control wheat straw, implying that the cumulative biogas production was improved by 45% using pretreated wheat straw than that using control wheat straw. These results suggested that pretreated wheat straw digestion led to a significant improvement in the biogas yield.
Sacrificial Piles as Scour Countermeasures in River Bridges A Numerical Study using FLOW-3D
Authors: Nazari-Sharabian Mohammad , Nazari-Sharabian Aliasghar , Karakouzian Moses , Karami Mehrdad
Published: June 2020

Scour is defined as the erosive action of flowing water, as well as the excavating and carrying away materials from beds and banks of streams, and from the vicinity of bridge foundations, which is one of the main causes of river bridge failures. In the present study, implementing a numerical approach, and using the FLOW-3D model that works based on the finite volume method (FVM), the applicability of using sacrificial piles in different configurations in front of a bridge pier as countermeasures against scouring is investigated. In this regard, the numerical model was calibrated based on an experimental study on scouring around an unprotected circular river bridge pier. In simulations, the bridge pier and sacrificial piles were circular, and the riverbed was sandy. In all scenarios, the flow rate was constant and equal to 45 L/s. Furthermore, one to five sacrificial piles were placed in front of the pier in different locations for each scenario. Implementation of the sacrificial piles proved to be effective in substantially reducing the scour depths. The results showed that although scouring occurred in the entire area around the pier, the maximum and minimum scour depths were observed on the sides (using three sacrificial piles located upstream, at three and five times the pier diameter) and in the back (using five sacrificial piles located upstream, at four, six, and eight times the pier diameter) of the pier. Moreover, among scenarios where single piles were installed in front of the pier, installing them at a distance of five times the pier diameter was more effective in reducing scour depths. For other scenarios, in which three piles and five piles were installed, distances of six and four times the pier diameter for the three piles scenario, and four, six, and eight times the pier diameter for the five piles scenario were most effective.
Incorporating of Two Waste Materials for the Use in Fine-Grained Soil Stabilization
Authors: Jafer Hassnen Mosa , Majeed Zaid Hameed , Dulaimi Anmar Faleh
Published: June 2020

The present experimental work briefly aimed to utilize two different waste materials; calcium carbide residue (CCR) and the locally available rice husk ash (RHA) to produce an eco-friendly binder for the use in fine-grained soil stabilization. The effect of different binary mixtures, produced by mixing CCR and RHA with different proportion, on the geotechnical properties of a fine-grained soil was investigated. For the unconfined compressive strength (UCS) test, the soil specimens were subjected to various curing periods (7, 21, 28 and 90 days). The microstructure of the soil treated with the optimum mixture was carried out by utilizing scanning electron microscopy (SEM) test. Results of UCS test showed an interesting growth after the treatment of binary mixtures relative to those samples treated with only CCR.  Plasticity index (PI) was found to decrease noticeably with use of CCR only while further reductions in PI were achieved after the RHA incorporation. Clear variations in the microstructure of the treated soil were revealed from SEM testing approving the creation of cementitious products. The results of the current study indicated that the wastes utilized in this investigation could be potentially used as alternatives to the conventional binders and final disposition with economic and environmental advantages.
Pendampingan dalam Perencanaan Penanaman Bawang Merah pada Kelompok Tani Harapan Jaya Kelurahan Talang Keramat Kecamatan Talang Kelapa Kabupaten Banyuasin
Authors: Febriantoko Jovan , Bastani Sepindjung  , Riana Mayasari
Published: June 2020

Agriculture is the process of utilizing biological resources. One of the community groups that run agricultural activities is the Harapan Jaya Farmers Group. It is located on Jalan Kauman RT 15, RW 03, Talang Kramat Village, Talang Kelapa Regency, Banyuasin, South Sumatra, which was then called a partner in the Community Partnership Program. Based on the interviews, observations, data analysis and identification of problems with the partners, several major problems were found: low pH land, lack of agricultural equipment, partners’ lack of ability to understand the techniques of shallots cultivation, less attractive packaging, and the absence of promotion. The solution to these problems was by conducting pre-implementation socialization and discussion, seeding shallots, planting media preparation, liming and fertilizing, planting shallots, designing agricultural equipment and conducting product marketing training. The results are the partners have completely understood about the process of planting shallots both from seed and from shallots tuber seedlings. The partners are also able to understand the working mechanism of agricultural aids thus they are able to repair the damage of their simple tools. Partners who are relatively young are able to manage the web thus it is expected to simplify the marketing process. Increasing the partners’ ability can increase the partners’ independence both personally and in groups. Increasing the potential of the agriculture field, especially regarding the planting of shallots could erase the pessimistic view of planting shallots in marshy and low pH land.
Inclusión y territorialidad en la nivelación general para el examen Ser Bachiller en el Ecuador
Authors: Haro-Jácome Oswaldo , Simbaña-Cabrera Héctor , Aguilar-Paoquiza Juan
Published: June 2020

El artículo describe la inclusión: por género, etnia, discapacidad; y por territorialidad provincial, cantonal e institucional de bachilleres participantes en el Curso de Nivelación General, segundo proceso del año 2019, ejecutado por la Secretaría de Educación Superior, Ciencia, Tecnología e Innovación (SENESCYT), en convenio con la Empresa Pública UCE. El tratado puntualiza la situación de derechos de la juventud que se capacita para rendir el examen Ser Bachiller. La investigación se fundamenta en el enfoque cuantitativo no experimental, los hechos se abordan desde la perspectiva transversal y su profundidad es exploratoria-descriptiva. Los instrumentos de campo fueron: la encuesta en línea aplicada mediante la plataforma de la Universidad Central del Ecuador, aplicada a 7 665 bachilleres, de los cuales contestaron 4 073 que se constituyó en la muestra casual no probabilística. Las notas para observar participación-aprobación se extrajeron de las aulas virtuales por dominio de la plataforma. Se descubrió que bachilleres desertores y reprobados superan levemente a aquellos promocionados. En inclusión por género, la promoción de mujeres es muy superior a varones y otros géneros; por etnias los mestizos superan ampliamente la participación y aprobación. No se reportaron casos de bachilleres con discapacidad en el curso. En territorialidad, los bachilleres de la región litoral superan al resto de provincias y cantones de otras regiones; mientras que por instituciones, los planteles educativos públicos, regentados por el Estado, tienen mayor participación.
La percepción laboral de los egresados del modelo de la universidad intercultural en México, el caso de la UNICH y la UIEM
Authors: Juárez-Toledo Rafael , Erdösová Zuzana
Published: June 2020

Los licenciados interculturales son jóvenes procedentes de variados ámbitos socioculturales que se forman en el marco del modelo educativo llamado universidad intercultural, gestionado por la Secretaría de Educación Pública de México. En este trabajo se analiza la disyuntiva existente entre el discurso interculturalista plasmado en los perfiles de ingreso y egreso que soportan a la educación superior de este tipo, y la situación imperante para sus egresados toda vez que buscan insertarse en el mercado laboral. El cuestionamiento inicial al que se hace referencia para ubicar el problema es: ¿qué sucede una vez concluida la formación universitaria intercultural? Aunque la percepción sobre la educación intercultural es positiva para sus autoridades y egresados, se ha identificado una

profunda incomprensión o desconocimiento de la propuesta intercultural y del papel que los licenciados interculturales deben desempeñar en la sociedad, específicamente en el mercado de trabajo. Los egresados deben enfrentar problemas relacionados con la discriminación, los bajos niveles salariales y la falta de eficientes oportunidades de desarrollo personal. Mediante un proceso cualitativo, aplicado en los diferentes actores, se ha obtenido la percepción que se tiene sobre el desempeño de los egresados interculturales para dos contextos geográficos y socioculturales: la Universidad Intercultural del Estado de México y la Universidad Intercultural de Chiapas.
Análisis de la implementación del portal de servicios educativos: EducarEcuador
Authors: Vinueza-Vinueza Santiago , Pozo-Caicedo Joshua , Pacheco-Gallegos Anthony , Arequipa-Caisaluisa Richard
Published: June 2020

Este artículo presenta el análisis sobre la implementación de la plataforma educativa EducarEcuador en el sistema de educación nacional, además, la importancia del uso de las plataformas virtuales en la actualidad. Es necesario recalcar que existen zonas que por su ubicación geográfica y económica no disponen de acceso a tecnologías de la información y comunicación (TIC). La investigación nos permitirá conocer el estado de la implementación de la plataforma virtual EducarEcuador. Esta investigación se realizará a partir de una revisión de diferentes fuentes bibliográficas, se indagaron experiencias y resultados de investigaciones sobre la plataforma EducarEcuador. También se usaron los resultados obtenidos del análisis de documentos estadísticos del Ministerio de Educación y del Instituto Nacional de Estadísticas y Censos (INEC). Sin embargo, las investigaciones encontradas son a nivel institucional, cantonal o provincial. Lo cual no permite conocer el estado real de la implementación de la plataforma EducarEcuador en todo el ámbito educativo ecuatoriano. La investigación busca evaluar el índice de la incorporación de la plataforma virtual en las instituciones educativas del país. Entre los resultados se percibe que la implementación y el manejo de las herramientas de la plataforma ha tenido una mayor acogida en la jurisdicción fiscal. Además, se percibe la falta de infraestructura tecnológicas en el país. En consecuencia, la ausencia de infraestructura limita al manejo de la plataforma educativa. No obstante, no limita solamente a los usuarios sino limita fuertemente la implementación de esta plataforma.
Análisis de la especialización productiva regional para impulsar la diversificación exportable en Ecuador
Authors: Pérez España Jhon Alexis , Espinoza Estrella Bryan , Delgado Jean Carlos
Published: June 2020

Este trabajo analiza la especialización productiva ecuatoriana frente a Suramérica, a fin de sugerir una mejor diversificación exportable. Para esto se calculan dos indicadores; por un lado, está el índice de sofisticación por producto (PRODY), que indica en qué productos se encuentra especializada Suramérica; y por otro, el índice de sofisticación de las exportaciones (EXPY), que señala la especialización por cada país a partir de esa lista de productos regionales. Con respecto a Ecuador, estos índices evidenciaron un bajo nivel de sofisticación de sus exportaciones, lo que conlleva a un limitado crecimiento con respecto a los demás países de la región.
Implemntasi Teori Belajar Konstruktivisme Vygotsky Pada Mata Pelajaran Pai Di SMA Sains Qur`An Yogyakata
Authors: -Muhibin Muhibbin , Hidayatullah M. Arif
Published: June 2020

This study aims to answer the question of how and the implementation of vygotsky constructivism learning theory in PAI subjects at the Qur`an High School. The method used in this study is a qualitative research method, the instruments used by researchers in this study, are the researchers themselves and notebooks. Furthermore, the results of research on the implementation of constructivist learning theory in general can be said to be going well and in accordance with the steps of its application. In implementing constructivist learning models in general, PAI subjects in the Qur'an Science High School can run well and cannot be separated from several supporting factors such as the accuracy of teaching materials, methods, principals, teachers, and adequate infrastructure. In addition to supporting factors there are also several inhibiting factors in the constructivist learning model in general, namely the insufficient allocation of time and the lack of self-confidence of students at the beginning of the application of constructivist learning models. Efforts that can be made to overcome the inhibiting factors of constructivist learning models in general are teachers trying to form positive attitudes in students such as self-confidence and mutual respect besides sending teachers to attend training, work shops.
Pembelajaran Terpadu Dalam Perspektif K.H. Ahmad Dahlan
Authors: Fidayanti Pera Ika , Tukinah Tukinah
Published: June 2020

K.H. Ahmad Dahlan compiled Islamic education institutions in Indonesia which involved several factors, one of which was due to K. H. Ahmad Dahlan's concerns against indigenous Muslims, facilitating religious science education and general science. The purpose of this study was to study K. H. Ahmad Dahlan's educational concepts and question K. H. Ahmad Dahlan's educational philosophy. This research method is literature study (library research). The results of this study discuss the concept of K. H. Ahmad Dahlan's education, namely the integration of science and religion, the integration of religious science and general science, and freedom of thought. Furthermore K. H. Ahmad Dahlan's educational philosophy is the first, the highest knowledge can be achieved through common sense and istiqamah towards the truth of reason and based on a pure heart. Second, reason is a basic human need. Third, the science of mantiq or logic is the highest education for humans which can only help if humans escape God's guidance.
The Vocabulary Profile of UN (Ujian Nasional) Reading Texts of Senior High School
Authors: Atmadja Andila
Published: June 2020

ABSTRACTThis the study was aimed at investigating vocabulary profile of English UN 2015 Reading Texts for Senior High School. Content analysis was used as a research method. The data were vocabularies which encountered within 14 reading texts. The instruments were Lewis (1997) divisions of lexical items adapted in Lakshmi (2012) and 1000-3000 new general service list by Browne and Coxhead (2013) within Vocab Profiler software inventing by Cobb (2009).The result showedthat(1) There were four lexical items encountered in the UN 2015 Reading Text. They were: polywords, collocation, a fixed expression, and semi-fixed expression. (2) The most dominant of lexical items were encountered in the Reading Text is collocation with 145 words (60%), Polywords with 51 words (21%), Semi fixed expression with 38 words (16%) and the lowest was fixed expression with 7 words (3%). (3) There were 1067 words (88%) in the UN reading text were the extent of coverage level 1000-3000 NGSL and NAWL level by Browne and Coxhead. The conclusion was the teacher should teach the students about collocation and other word partnership in order to assist students to comprehend the English text better.
Layanan Pengetahuan tentang COVID-19 di Lembaga Informasi
Authors: Nurislaminingsih Rizki
Published: June 2020

Corona virus is causing anxiety for the community. Continuous reporting, rumors and the emergence of thousands of writings about corona on the internet add to the concern about the truth of the information content. Valid data and real information are needed to be a trusted source of knowledge. Information institutions becomes a bridge between the need for knowledge and the uncountable distribution of information. This paper aims to analyze the community's knowledge needs about COVID-19 and provide recommendations for activities that information agencies can undertake to meet needs. Patients with certain diseases, old age, and pregnant women need health knowledge according to the conditions of those who are considered to have a lower immune. Office workers, field workers, entrepreneurs, and students need knowledge of increased immunity, preventive measures and ways of treatment that are suitable for daily activities. Recommended activities that can be carried out by information institutions include: the data center can act as a valid data bank relating to the corona, the information center provides reliable information and the documentation center becomes document making agency. The library through the reference service provides reference knowledge about corona while the circulation service provides a collection of COVID-19.
Influence of Interest Rate on Industrial Output in Nigeria
Authors: George-Anokwuru Chioma Chidinma , Bosco Itoro
Published: June 2020

The study examined the effect of interest rate on industrial sector in Nigeria from 1980 to 2018. The data for the study were sourced from Central Bank of Nigeria (CBN) statistical bulletin and Autoregressive Distributed Lag model was used as the main analytical tool. The ARDL Bounds test revealed the existence of long run relationship among the variables. The result further revealed the existence of a positive relationship between interest rate and industrial output both in the long run and short run. The rate of inflation was negatively related to industrial output but the relationship was not significant in both the short run and the long run. The number of labour force affected the productivity of industry thereby increasing its output in both the short run and the long run. Gross investment has a positive relationship with industrial output but the relationship was not significant. Lastly, foreign direct investment was not significant in affecting industrial output in the short run but it was positive and significant in affecting industrial output in the long run. The study concluded that interest rate has the ability to influence industry output in Nigeria. Therefore, the study recommended among others that the apex monetary institution - the Central Bank of Nigeria should ensure that the rate of interest that will encourage investors to borrow in order to start to do businesses or to expand their businesses. This will increase industry output and in turn support economic growth in Nigeria.
PENERAPAN MODEL PEMBELAJARAN GROUP INVESTIGATION DALAM MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA
Authors: Natsir Irmawaty , Taufik Abdul Rachman
Published: June 2020

This research discusses several problems found in the field, studying the learning process that is still dominated by the teacher, avoiding student participation in active learning activities, increasing student motivation in learning, and increasing collaboration between students. This research was conducted in one of the State Junior High Schools located in Makassar City, Indonesia in the academic year 2017/2018 which aims to improve student learning outcomes through the application of investigative group learning models. The research subjects were students of class VIII with 31 students. This class action research consists of 2 cycles, where each cycle consists of 3 meetings and 1 cycle test. Information related to student activities is collected using observation sheets and information related to student abilities is collected using tests given at the end of the cycle. Obtaining a score for cycle 1 is 70.48 with a completeness level of 70.79% and a score for cycle 2 is 76.32 with a completeness level of 87.1%. After applying learning with the investigation stage the group showed an increase in activity and the ability of students in the second cycle that was supported had reached classical completeness by 75%
PENINGKATAN HASIL BELAJAR SISWA PADA MATERI PROGRAM LINIER DENGAN MENGGUNAKAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING
Authors: De HAAS Ivone , Molle Juliana Selvina , Ngilawajan Darma Andreas
Published: June 2020

The purpose of this research is to improve students’ learning outcome on the topic liniear programing by using Problem Based Learning. This research is conducted in 11th grade students of senior high school 1 Saparua in academic year 2019/ 2020. Total number students on experiment grup is 25. This research took 2 cycles in order to achieve passing grade by most students. Every cycle consists of two class meeting. Data collected by using essay tests on each cycle and observation sheet. Further more, data analyzed by using qualitative nd quantitative analysis. The results show that students’ achievement on cycle I which reached passing grade is 56% of total number students. Meanwhile, students’ achievement which reached passing grade on cycle II is 80% of total number of students. There can be concluded that students’ learning outcome has improved 24% through Problem Based Learning
A communication ethics response to “Communication Under Siege”
Authors: Persuit Jeanne
Published: June 2020

Presented as a response to the keynote speaker at ICRC 2020, this essay considers the communication ethics implications to crisis communication informed by the work of philosopher Hannah Arendt and communication scholar Ronald C. Arnett.
Building resilience for stronger communities
Authors: Gainey Barbara
Published: June 2020

Much of the early research in crisis management and crisis communication centered on the core competencies of crisis response: why do we need to plan for crises; what are the stages of effective crisis planning; what theoretical perspectives are helpful to scholars and practitioners; and what are the steps of an up-to-date crisis plan. Delineation of these core competencies goes on. Among these competencies, the crisis stage meriting the least attention arguably is post-crisis, the critical days and weeks immediately following the formal resolution of the crisis. Research attention has often focused on recovery and learning, positioning the organization for the future. Another critical component of effective crisis response merits further study. In these days of black swan crises that take a huge toll on organizations and their communities, more focus is needed on building individual, organizational, and community resilience to destructive crises. While resilience can be best measured in the post-crisis phase, this assessment should lead to new efforts to educate and prepare individuals, organizations, and communities for the new threats to come. This research proposes strategies for building resilience to strengthen organizational and community response when confronted by major crisis events.