bluuebunny/crossref_metadata_2025 huggingface dataset:
Kartalkaya Sol Sahil Sulama Birliği Bazı Performans Göstergeleri, Sulama Problemleri ve Çözüm Önerileri
Authors: SESVEREN Sertan , KARAKAYA Fatma Gül
Published: February 2019

Bu çalışma Narlı Ovası Kartalkaya Sol Sahil Sulama Birliği alanındaki sulama şebekesinin 2007-2017 yıllarına ilişkin bazı performans göstergelerini belirlemek ve üreticilere uygulanan anket ile “yeterlilik durumu, tarımsal sulama altyapısı, sulama suyunun kullanımı, tarımsal su yönetiminde karşılaşılan sorunların” irdelenmesi amacıyla yürütülmüştür. Araştırma bulgularına göre; sulama oranı %70.4-96.8, su temin oranı 1-1.37, su ücretleri toplama oranı ortalama %93.7 ve bakım onarım oranı %8.6-37.3 olarak hesaplanmıştır. Anket değerlendirmeleri sonucunda genelde ortaya çıkan sulama sorunu sulama altyapısının yetersizliğidir. Altyapı sorunları su iletim kayıplarında etkili olan kanal bağlantı noktalarındaki sızmalar, kanal ve kanaletlerin kırılması, eskimesi ve bakım onarım yetersizliği şeklindedir. Su yönetimi konusundaki sorunlar ise aşırı su kullanımı ve buna bağlı oluşan tuzluluk, drenaj, taban suyu vb. çevresel sorunlar, ölçülü sulama yapılmaması ve HES yapılarında suyun tutulması nedeniyle su yetersizliğinin oluşmasıdır. Su yetersizliğinin giderilmesi için ilave olarak açılan kuyulardan yer altı suyunun kullanılması ile üretim maliyetlerinin artması da eklenebilir.
Glaucium flavum Crantz (Papaveraceae) Türünün Morfolojik Özellikleri ve Türkiye’deki Yayılış Alanları
Authors: MUNGAN KILIÇ Fatma , YILDIZ Kemal , KILIÇ Murat
Published: February 2019

Glaucium Mill. cinsine ait genellikle parlak,
dikkat çekici sarı renkte olup “sarı boynuzlu gelincik” olarak bilinmektedir.
Farmasötik endüstrisinde alkaloid glaucine kaynağı olarak kullanılan tıbbi bir
bitkidir.  Tür deniz kenarlarında, nehir
vadilerinde, kumlu toraklarda yayılış göstermektedir (0-50 m). Morfolojik inceleme
sonucunda gövde 23-42 cm
uzunluğunda, tüysüz, dallanmış, beyazımsı yeşil; yapraklar kalınca, çok mat
yeşil. Çiçek tomurcukları tüysüz veya biraz sivri, yumurtamsı-dikdörtgensi
(ovat-oblong), keskin (akut), petaller genellikle sarı renklidir. Yapılan
morfolojik incelemeler sonucunda, elde edilen veriler ile Türkiye Florası’ndaki
veriler arasında paralellik gözlemlenmiştir. Ayrıca türün yayılış alanları ve
deskripsiyonu genişletilmiş, elde edilen veriler tablo haline getirilmiştir.
Palinolojik inceleme sonunda polenlerin şekli genellikle sferoidal, apertür
durumu üç kolpuslu, ornemantasyonu mikroekinat ve mikroperforat olarak tespit
edilmiştir. Tohum şekillerinin böbreksi, yüzeylerinin alveolat-faveolat olduğu
görülmüştür.
Preparation and Electo-optical Characterization of Poly (N-Vinyl Carbazole) Magnetite Composites
Authors: AHLATCIOĞLU ÖZEROL Esma
Published: February 2019

In this study, the magnetic particles were prepared through the chemical method, using the mixing a water solution of FeCl2.4H2O (1.0 M) and FeCl3.6H2O (1.5 M). Different weight percentage of magnetite (0%, 1% and 5%) and N-vinyl carbazole (NVC) were placed into 20 mL of NMP and chemical polymerization was performed by using AIBN as iniator at 70 ˚C for 24 h. These composites are characterized by methods such as SEM (Scanning Electron Microscopy, and UV-Vis (Ultraviolet-visible Spectroscopy). Thanks to these methods it can be inform about morphology and optical properties of the samples. Moreover, dielectric measurement of the samples have been done by impedance spectroscopy.
Knockdown of TIGAR Induces Apoptosis and Autophagy with Modulates NF-κB and HO-1 Expression in A549 Lung Cancer Cells
Authors: Ağca Can Ali , Shareef Osama Hamid
Published: February 2019

The tp53-induced
glycolysis and apoptosis regulator (TIGAR) protein controls fructose-2, 6-
bisphosphate (Fru-2, 6-P2) levels during glucose metabolism and helps maintain
nicotinamide adenine dinucleotide phosphate (NADPH) levels to recycle
glutathione (GSH), a key intracellular antioxidant. The present study was
designed to investigate the apoptosis and autophagy mechanisms via reactive
oxygen species (ROS) that underlie TIGAR knockdown in the A549 cell line. To
detect the influence of siRNA-TIGAR on A549 lung cancer cells, we performed
cell viabilty, colony formation, ROS, and NADPH assays. In addition, Western
blotting and real-time polymerase chain reaction (PCR) assays were used to
measure protein and mRNA expression levels, respectively. After TIGAR knockdown
in A549 cell lines, various assay parameters were analyzed and showed that
down-regulation of TIGAR inhibited viability and decreased colony formation. We
also demonstrated that TIGAR knockdown induced apoptosis and autophagy,
followed by an induction of nuclear factor kappa-light-chain-enhancer of
activated B cells (NF-κB) and heme oxygenase-1 (HO-1) expression. Furthermore,
increased ROS levels and decreased NADPH levels were observed. This study
supports our understanding of the possibility of employing TIGAR knockdown in
lung cancer cells to enhance apoptosis and autophagy with NF-κB and HO-1
expression and then suggest TIGAR as a potential target for the treatment of
lung cancer.
Homojen 3D Nano Boşluklu Yapılar ile Şarj Edilebilir Pillerde Performans Artışı
Authors: DEMİREL Serkan
Published: February 2019

Bu
çalışma, günümüzde enerji sistemlerinin daha yüksek kapasiteli ve performanslı
üretilmesini sağlayabilecek ters opal metodunun piller üzerindeki kapasite
artışını göstermektedir. Ters opal metodu ile yeniden şarj-edilebilir pil
elektrotlarının kapasitelerinin yaklaşık 2.5 kat arttığı ve bu artış
sağlanırken daha küçük boyutlu ve daha ince katmanlı elektrotların
hazırlanabildiği görülmüştür. Ters opal metodu ile elektrotlar homojen 3D
boşluklu bir yapıya sahiptir. Bu metot ile küresel boşluklu yapıda daha yüksek
yüzey alanına sahip ve kullanılan opallerin çaplarına bağlı olarak nanometre
seviyesinde elektrot tabakaları oluşturmaktadır. Ters opal metodunda üretilen
nanometre seviyesindeki kalınlığa sahip bu yapılar ayrıca iyon transferini
hızlandırarak pillerin daha hızlı şarj edilmesi imkânı da sağlamaktadır.
Attosaniye Bilimi ve Gelecekteki Eğilimler
Authors: ALP Dilan
Published: February 2019

Elektronik
bilgi işleme, manyetik bilgi depolama alanlarının nihai boyut ve hız sınırları
nedir ve bu sınırlara nasıl yaklaşabiliriz soruları ile mikroskobik düzeyde
elektron hareketinin anlaşılması ve kontrolü üzerinde yapılan birçok bilimsel
çalışma, attosaniye biliminin doğmasına ve ilerlemesine neden olmuştur.  Son yıllardaki ultra-hız lazer teknolojisinin
ilerlemesi, enerji ve yükün sadece atomlarla değil, aynı zamanda daha karmaşık
katı ve moleküler sistemlerde de nasıl taşındığını anlamak için madde ile yoğun
alan arasındaki etkileşme süreci anahtar rol görevi görür.  Derleme olarak hazırlanan bu çalışmada,
elektronların atomik ölçekli hareketini gerçek zamanlı olarak gözlemleme ve
kontrol etme olanağı sağlayan temel kavramlar ve deneysel araçlar, deneysel
gözlenebilirliğin mikroskobik değişkenlerle birleştirilmesi için kritik rol
oynayan teorik modeller ve bunun beklenen teknolojik etkileri ele
alınmıştır.  Bu amaçla, atom ve moleküler
fiziği ile yoğun-madde fiziğinde nano ve attosaniye teknolojisinin rolü
araştırılarak, attosaniyelik atımların birkaç önemli ve son güncel uygulama
alanları hakkında yerel literatüre kaynak niteliğinde bilgi sunacaktır.
Vatandaş Bilimi Tabanlı Vektör Haritaların Kullanılması ile İnsansız Hava Aracından Elde Edilen Görüntülerin Yöneltilmesi için Otomatik Yer Kontrol Noktası Üretimi
Authors: DEMİR Nusret , KÖKSAL Hakan
Published: February 2019

Son yıllarda insansız hava araçları teknolojisi hızlı bir gelişim göstermiştir. Bu yeni teknoloji ile hızlı, etkin görüntü alımı yapılabilmekte, ayrıca görüntü verileri işlenerek hassas harita, ortogörüntü ve sayısal arazi modeli oluşturulabilmektedir. IHA’lardan elde edilen görüntülerin bu amaçlarla kullanımı için fotogrametride  mutlak yöneltmenin yapılabilmesi için, eğer kamera çekim konuları bilinmiyorsa alım yapılan alanda koordinatı bilinen noktalara yani diğer bir deyişle yer kontrol noktalarına ihtiyaç bulunmaktadır. Bu noktalar geleneksel olarak arazi çalışmaları (total station, GNSS sistemleri vb.) ile elde edilmektedir, zaman alıcıdır. Bunun yanında, mevcut doğruluk derecesi bilinen mevcut harita, uydu görüntüsü gibi mekânsal veriler de yer kontrol noktası sağlayacak potansiyele sahiptir. Bu çalışmada mevcut vektör haritaların kullanımıyla, istenen doğruluk derecesinin kullanılan dış verinin kalitesine bağlı olarak, yer kontrol noktalarının kullanımını ortadan kaldırmak amaçlanmıştır. Bu amaçla güncellenen en bilinen vatandaş bilimi uygulamalarından ‘OpenStreet Map’ vektör haritalar (OSM) ve IHA’lardan elde edilen görüntülerle otomatik eşleştirilmesi ile yer kontrol noktaları üretilmiş, ortogörüntü ve sayısal yükseklik modeli oluşturulmuştur. Çalışmanın sonuçlarının kalitesi, mevcut detaylı oluşturulmuş bir vektör haritadan elle elde edilen yer kontrol noktalarının, üretilen noktalarla karşılaştırılması ve üretilen sayısal yükseklik modellerinin üç boyutlu karşılaştırılması ile analiz edilmiştir.   
The Per-1 Short Isoform Inhibits de novo HIV-1 Transcription in Resting CD4+ T-cells
Authors: Zhao Li , Liu Mei , Ouyang Jiayue , Zhu Zheming , Geng Wenqing , Dong Jinxiu , Xiong Ying , Wang Shumei , Zhang Xiaowei , Qiao Ying , Ding Haibo , Sun Hong , Liang Guoxin , Shang Hong , Han Xiaoxu
Published: February 2019

Background:

Understanding of the restriction of HIV-1 transcription in resting CD4+ Tcells
is critical to find a cure for AIDS. Although many negative factors causing HIV-1 transcription
blockage in resting CD4+ T-cells have been found, there are still unknown mechanisms to explore.

Objective:

To explore the mechanism for the suppression of de novo HIV-1 transcription in resting
CD4+ T-cells.

Methods:

In this study, a short isoform of Per-1 expression plasmid was transfected into 293T cells
with or without Tat's presence to identify Per-1 as a negative regulator for HIV-1 transcription. Silencing
of Per-1 was conducted in resting CD4+ T-cells or monocyte-derived macrophages (MDMs)
to evaluate the antiviral activity of Per-1. Additionally, we analyzed the correlation between Per-1
expression and viral loads in vivo, and silenced Per-1 by siRNA technology to investigate the potential
anti-HIV-1 roles of Per-1 in vivo in untreated HIV-1-infected individuals.

Results:

We found that short isoform Per-1 can restrict HIV-1 replication and Tat ameliorates this
inhibitory effect. Silencing of Per-1 could upregulate HIV-1 transcription both in resting CD4+ Tcells
and MDMs. Moreover, Per-1 expression is inversely correlated with viral loads in Rapid
progressors (RPs) in vivo.

Conclusion:

These data together suggest that Per-1 is a novel negative regulator of HIV-1 transcription.
This restrictive activity of Per-1 to HIV-1 replication may contribute to HIV-1 latency in resting
CD4+ T-cells.
The Impact of Open-Access Status on Journal Indices: Respiratory and Pulmonology Journals
Authors: AlRyalat Saif Aldeen , Abu Nassar Anas , Tamimi Faris , Al-Fraihat Esraa , Assaf Lama , Ghareeb Razan , Masoudi Mahmoud , Al-Essa Mohammad
Published: February 2019

Background:

Open access (OA) publishing is rapidly emerging in almost all disciplines,
with variable intensity and effect on the discipline itself. The move toward OA is also observed in the
field of respiratory and pulmonology, where both OA data repositories and OA journals are rapidly
emerging.

Objective:

we aim to study the open-access status of respiratory and pulmonology journals and the
impact of the open-access status on journal indices.

Methods:

We collected journal’s data from Scopus Source List on 1st of November 2018. We filtered
the list for respiratory and pulmonology journals. Open Access Journals covered by Scopus are
recognized as Open Access if the journal is listed in the Directory of Open Access Journals (DOAJ)
and/or the Directory of Open Access Scholarly Resources (ROAD). For each journal, we used
several metrics to measure its strength, and then we compared these metrics between OA and non-
OA journals.

Results:

There were 125 respiratory and pulmonology journals, a number that has increased by
12.6% since 2011. Moreover, the percentage of OA journals has increased from 21.6% to 26.4%
during the same period. Non-OA journals have significantly higher scholarly output (p= 0.033), but
OA journals have significantly higher percentage of citation (p= 0.05).

Conclusion:

Publishing in OA journals will yield a higher citation percentage compared to non-OA
journals. Although this should not be the only reason to publish in an OA journal, it is still an
important factor to decide where to publish.
A New User-controlled and Efficient Encrypted Data Sharing Model in Cloud Storage
Authors: Wu Yuezhong , Chen Wei , Chen Shuhong , Wang Guojun , Li Changyun
Published: February 2019

Background:

Cloud storage is generally used to provide on-demand services with sufficient
scalability in an efficient network environment, and various encryption algorithms are typically
applied to protect the data in the cloud. However, it is non-trivial to obtain the original data
after encryption and efficient methods are needed to access the original data.

Methods:

In this paper, we propose a new user-controlled and efficient encrypted data sharing
model in cloud storage. It preprocesses user data to ensure the confidentiality and integrity based
on triple encryption scheme of CP-ABE ciphertext access control mechanism and integrity verification.
Moreover, it adopts secondary screening program to achieve efficient ciphertext retrieval by
using distributed Lucene technology and fine-grained decision tree. In this way, when a trustworthy
third party is introduced, the security and reliability of data sharing can be guaranteed. To provide
data security and efficient retrieval, we also combine active user with active system.

Results:

Experimental results show that the proposed model can ensure data security in cloud storage
services platform as well as enhance the operational performance of data sharing.

Conclusion:

The proposed security sharing mechanism works well in an actual cloud storage environment.
Bridging with Tirofiban During Temporary Withdrawal of Oral Antiplatelets for Two Major Surgical Procedures in High Ischaemic Risk Patients
Authors: Vlachou Maria , Didagelos Matthaios , Kouparanis Antonios , Karvounis Haralambos , Ziakas Antonios
Published: February 2019

Background:

Recent coronary stent implantation requires Dual Antiplatelet Therapy (DAPT) for at least 6 months. Serious issues are raised when non-cardiac surgery is required during this period, because of the balance between ischemic and haemorrhagic complications.

Case Reports:

We report 2 high ischemic risk cases requiring intermediate bleeding risk non-cardiac surgery, during the first month of DAPT initiation. Perioperative management with discontinuation of the P2Y12 inhibitor and bridging with tirofiban, while aspirin was uninterrupted, was uneventful.

Conclusion:

Bridging with intravenous glycoprotein IIb/IIIa receptor inhibitors may be a safe and effective alternative to P2Y12 inhibitor discontinuation in non-deferrable non-cardiac surgery.
Green Synthesis of 3-Substituted-4-arylmethylideneisoxazol-5(4H)-one Derivatives Catalyzed by Salicylic Acid
Authors: Mosallanezhad Asiyeh , Kiyani Hamzeh
Published: February 2019

Background:

4-Arylmethylideneisoxazol-5(4H)-ones are a class of organic compounds
with a variety of applications in the agriculture, filter dyes, photonic devices, and pharmaceutical industries.
They are also used as synthetic precursors for the synthesis of other organic compounds. As
a result, efforts are being made to search new and available catalyst and green methods toward their
synthesis.

Objective:

The aim of this work is to investigate the catalytic activity of salicylic acid as an inexpensive,
easy to handle, and safe catalyst to synthesis of some derivatives of isoxazole-5(4H)-ones in
water medium.

Methods:

To aqueous solution of equal amounts of aryl/heteroaryl aldehydes, β-ketoesters, and hydroxylamine
hydrochloride; salicylic acid (15 mol%) was added and the reaction mixture was stirred
at room temperature for a specified periods. The precipitated product was filtered and washed with
water to obtain 3-substituted-4-arylmethylideneisoxazol-5(4H)-ones. The reaction conditions were
also optimized and extended to synthesis other isoxazol-5(4H)-ones.

Results:

The salicylic acid is found to possess acceptable catalytic activity for the promotion of
three-component cyclocondensation of aryl/heteroaryl aldehydes, β-ketoesters, and hydroxylamine
hydrochloride. The three-component reaction led to construction of 3-substituted-4-arylmethylideneisoxazol-
5(4H)-ones in good to high isolated reaction yields.

Conclusion:

The efficient and environmental friendliness procedure for the synthesis of isoxazol-
5(4H)-ones is introduced. The reaction also carried out smoothly in water as a cost-effective, simple,
green, and non-toxic solvent at room temperature without using heating, microwave, and ultrasound
sources.
The influence of asphalt ageing on induction healing effect on porous asphalt concrete
Authors: Xu Shi , Liu Xueyan , Tabaković Amir , Schlangen Erik
Published: February 2019

Induction healing is a proven technology which is able to improve the self-healing capacity of asphalt concrete. Healing is achieved via electromagnetic current produced by passing induction machine, where steel asphalt constituents heat up which in turn soften the bitumen in the asphalt layer, allowing it to flow and close cracks, repairing the damage. This paper reports on the study which investigated the influence of ageing on the healing capacity of Porous Asphalt (PA) concrete. Porous Asphalt concrete mix was prepared first,  then subjected to an accelerated (laboratory) ageing process using a ventilated oven. In order to further evaluate the induction healing efficiency of asphalt concrete,  Semi-circular bending (SCB) and healing cycles were performed on asphalt concrete specimens. The results show that with an increase of the ageing level of porous asphalt concrete, the induction healing efficiency decreases.
Topical Anti-inflammatory Activity of Bangle (Zingiber cassumunar Roxb). Ethanolic Extract in Mice Induced By Carrageenan
Authors: Wulansari Endang Dwi , Wahyuono Subagus , Marchaban Marchaban , Widyarini Sitarina
Published: February 2019

Rhizome of bangle (Zingiber cassumunar Roxb.) is one of the materials that are traditionally used in the traditional preparation to maintain skin from redness. The content of chemical compound in bangle rhizomes has many benefits, including inhibition of the inflammatory processes. This study aims to determine the topical anti-inflammatory activity of ethanolic extract of bangle rhizomes in mice induced by carrageenan. Thirty five female Swiss mice were used in this study. Animals were divided into 7 group of five: normal group, carrageenan 2% group, carrageenan 2% group plus control of basis (Biocream®), carrageenan 2% group plus 2.5% hydrocortisone cream, and carrageenan 2% group plus cream of ethanolic extract of bangle rhizomes with the concentration of 1%, 2.5% and 5% w/w. Carrageenan 2% was injected subcutaneously in all treatment group except normal group. The skinfold thickness of mice was measured every 1 hour for 6 hours after carrageenan injection. Results of this study shows that there is a significant differences between treatment groups (p <0.05) compared to carrageenan 2% treated group. To conclude, ethanolic extract of bangle rhizomes has topical anti-inflammatory in mice induced by carrageenan.
Activity of 70% Ethanol Extract of Chrysophyllum cainito in Increasing Vertebrae Trabecular Bone Density in Female Mice
Authors: Utaminingtyas Nur Imamah , Ma'arif Burhan , Megawati Dewi Sinta , Atmaja Ria Ramadhani Dwi
Published: February 2019

Phytoestrogens are a class of compounds that have estrogen-like functions or structure. This research was conducted to find out the phytoestrogens activity in Chrysophyllum cainito leaves, in increasing the vertebrae trabecular bone density of female mice, using dexamethasone induction as osteoporosis model.  The 70% ethanol extract of C. cainito leaves was given to female mice with dose of 100; 200; and 400 mg/kgBW mice/day after being induced orally with dexamethasone with 0.145 mg/kgBW mice/day. The positive control used was 1.3 mg/kgBW mice/day alendronate. This research had been done in four weeks. The increasing of trabecular vertebrae bone density of female mice was measured with Histomorphometry staining methods. The result showed the 70% ethanol extract of C. cainito leaves have activity in increasing trabecular vertebrae bone density for female mice with optimum dose of 400 mg/kgBW mice/day. This activity occurs because phytoestrogens content in 70% ethanol extract of C. cainito leaves, that may replace the function of estrogen in its bond with ER.
Effects of Centella asiatica L. Capsul on Muscle Disfunction on Elderly People
Authors: Pramantara I Dewa Putu , Kertia Nyoman Nyoman , Wahyuningsih Mae Sri Hartati , Arfian Nur
Published: February 2019

Pegagan (Centella asiatica L) has been traditionally used to treat wounds, disordered nerve system, blood circulation, and prevent muscle disorders. Extract of Pegagan was considered safe and non-toxic as the acuut and chronic toxicity tests on male SD rats were not significant. It meant that further study was potential to be proceeded. Study of C.asiatica on muscle function of the elderly has not been done, therefore this study is aimed to observe  effects of C.asiatica extract on muscle masses, holding hands, walking speed (4.57 meter), walking test (6 minutes), and Time Up and Go test of the elderly. This study is designed for clinical double blind study with 2 groups of people, these are C. asiatica (18 people) treated with capsul (550 mg C. asiatica extract/day for 90 days) and placebo (17 people). This study is performed in the RSUP Dr. Sardjito hospital at the geriatric division. Subjects for this study were healthy elderly people and fit with the criteria of subjects for experiment. Result of the study, muscle masses do not decrease and all the measurements are not different with that of placebo. Except that the walking speed (6 minutes) of the treated subjects is better than that of the placebo. The conclusion of the study, the capsul containing C. asiatica extract (550 mg, once a day for 90 days) increases the strengh of hands holding, and the walking test (6 minutes) almost twice better than that of the placebo although the muscle masses does not increase significantly.
BISCOITOS TIPO COOKIES DESENVOLVIDOS A PARTIR DE FARINHA DE CASCA DE LARANJA
Authors: Rosolen Michele Dutra , Bresciani Laís , Sprandel Caroline Luísa , Spader Maíra , Klein Ânderson Luiz , Wolmuth João Otávio Mezacasa
Published: February 2019

Esse estudo teve como objetivo desenvolver biscoitos tipo cookies a partir da utilização de farinha de casca de laranja como substituição parcial da farinha de trigo. Para a preparação dos biscoitos, a farinha de trigo foi substituída por 10, 20 e 30% de farinha de casca de laranja. Os biscoitos foram avaliados quanto ao teor de umidade, teor de cinza, atividade de água, proteínas, lipídios, carboidratos, teor de minerais (Na, K e Ca) e análise sensorial. Os biscoitos tipo cookies analisados estão de acordo com a legislação em relação a composição centesimal e apresentaram concentrações elevadas de cálcio e potássio, o que enriquece nutricionalmente o produto. Conclui-se que o uso da casca de laranja na fabricação de biscoitos pode ser uma alternativa para o aproveitamento desse resíduo, além de apresentar um elevado potencial nutricional.
NÚMEROS x ALFABETO: O PROFESSOR E SUA CONCEPÇÃO DE ÁLGEBRA
Authors: Conceição Jadson De Souza , Santos Marcus Vinícius Costa dos , Oliveira Tamiles Da Silva
Published: February 2019

O presente artigo é fruto de leituras, discussões e experiências geradas durante as aulas da disciplina Álgebra Superior na Perspectiva da Educação Matemática, oferecida pelo Programa de Pós-Graduação em Educação Matemática da Universidade Estadual de Santa Cruz (PPGEM/UESC). O texto em questão objetiva analisar as concepções de Álgebra explicitadas por professores, com base nas ideias propostas por Usiskin, ao elaborarem situações-problema envolvendo conceitos algébricos da Educação Básica. Para a produção e coleta dos dados, participaram do estudo 13 professores que elaboraram 26 situações-problema envolvendo conceitos algébricos da Educação Básica. Os dados foram analisados e classificados segundo as concepções de álgebra propostas por Usiskin. As situações-problema apresentadas pelos professores evidenciaram a necessidade de pensar o ensino da álgebra para além do ato da resolução de problemas, isto é, um ensino com ênfase na aquisição e apreensão cognoscível que se torne significativo para o educando, em detrimento de metodologias que se pautem unicamente na manipulação de letras e números.
ANÁLISE COMPARATIVA DE ISOLAMENTO TÉRMICO ENTRE PAINÉIS PRÉ-MOLDADOS, ALVENARIA DE VEDAÇÃO DE BLOCOS DE CONCRETO E BLOCOS CERÂMICOS, PARA ATENDER A NBR 15575, PARA FINS DE CONFORTO TÉRMICO
Authors: Fiegenbaum Ana Cristina , Ferreira Marcelo Freitas
Published: February 2019

Os usuários buscam cada vez mais conforto e qualidade de vida, e a temperatura no ambiente é fator essencial para atingir esses patamares. Com base nisso, foi elaborado este trabalho com o objetivo de analisar o desempenho térmico de três paredes com materiais diferentes: painéis pré-moldados de concreto, blocos de concreto e blocos cerâmicos, que foram analisados com a aplicação de revestimentos de argamassa e pintura. Foram realizadas medições de temperatura interna e externa com um termo-higrômetro, seguindo a NBR 15575 (ABNT, 2013). Foram feitos também os cálculos através da NBR 15220-2 (ABNT, 2005) de resistência e transmitância térmica do material. O protótipo de blocos cerâmicos apresentou a menor temperatura, principalmente após o reboco e com pintura na cor branca, onde se pôde analisar que antes dessa etapa a temperatura interna chegava a atingir até 6ºC superiores à externa, diferença que caiu para 1,5ºC. Comprovou-se que a cerâmica é a mais eficiente para vedação, sendo o único material que se aproximou dos valores estabelecidos pela norma, com uma transmitância térmica de 2,526 W/(m².K), enquanto que os Protótipos 1 e 2 atingiram 4,403 e 2,718 (W/(m².K), respectivamente.
REVISÃO: AVALIAÇÃO DOS EFEITOS DO GLIFOSATO NO ECOSSISTEMA AGRÍCOLA E SUA TOXICIDADE PARA A SAÚDE HUMANA
Authors: Haas Peterson , Hoehne Lucélia , Kuhn Daniel
Published: February 2019

As ervas consideradas invasoras acarretam em 34% a redução da produtividade rural, por meio da competição por recursos presentes no solo, espaço físico e, inclusive, luminosidade. Portanto, a utilização de técnicas com o intuito de realizar o controle agrícola se torna necessária, seja por meio de práticas manuais e mecânicas ou através da aplicação de herbicidas, em que cerca de 60% do comércio mundial desses são à base de glifosato. No entanto, existem efeitos colaterais devido ao uso desses produtos. Dessa forma, o objetivo deste trabalho é fazer uma revisão sobre os efeitos do glifosato em relação ao ecossistema e à fisiologia vegetal, além de expor seus malefícios à saúde humana. Como resultados, verificou-se que o princípio-ativo é um agente não seletivo, pós-emergente e sistêmico e sua eficiência é atribuída devido ao seu mecanismo de ação que inibe a enzima 5-enolpiruvilshikimate-3-fosfato sintase, uma molécula essencial para a síntese de metabólitos secundários na via do ácido chiquímico. Embora seres-humanos e demais animais, em geral, não produzem os metabólitos secundários da via do ácido chiquímico, não se atribui toxicidade aguda ao glifosato. Contudo, verifica-se que, em virtude do aumento da resistência de ervas ao agente, eleva-se a dosagem de aplicação, propiciando biocumulação no solo e na própria cultura vegetal que o ser humano ingere posteriormente, absorvendo o contaminante. Portanto, observa-se que a atual legislação brasileira deve intervir através de trâmites que determinem doses máximas do glifosato em lavouras, estando em consonância com os limites de ingestão diária do composto de modo a reduzir os efeitos do glifosato na saúde humana e no ecossistema.
DETERMINAÇÃO DA COMPOSIÇÃO CENTESIMAL DE CHOCOLATE MEIO AMARGO
Authors: Marques Jamile Helena
Published: February 2019

O chocolate é um alimento consumido em grande escala, pelo prazer decorrente de sua ingestão. Por sua composição nutricional e alto consumo, associou-se o mesmo a ocorrência de doenças. Com isso, expandiu-se o mercado de variações de chocolate, levando a um aumento do consumo de chocolate meio-amargo, por ser considerado menos prejudicial. Este artigo aborda a determinação da composição centesimal do chocolate meio amargo, para fins de comparação com valores descritos na literatura e com a embalagem do produto. Observou-se teores de umidade, cinzas e lipídeos de acordo com os limites da legislação vigente, o que condiciona o produto para o consumo. Assim, o chocolate meio amargo possui valor nutricional que permite seu consumo de forma consciente, apresentando benefícios. A amostra apresentou umidade de 0,81%, teor de cinzas de 1,59%, teor de lipídeos de 30,33%, teor de fibras de 13,43%, teor de proteínas de 5,73% e teor de carboidratos de 48,08%. Além disso, a amostra analisada apresentou valor calórico de 486,47 kcal/100 g, sendo que em comparações com resultados da literatura todas possuem alto valor calórico e teor de carboidratos, o que configura o chocolate com um valor com alto teor energético.
Analytical solutions of nonlinear Klein-Gordon equations using Multistep Modified Reduced Differential Transform Method
Authors: Che Hussin , Ismail Ahmad , Kilicman Adem , Azmi Amirah
Published: February 2019

This paper explores the approximate analytical solution of non-linear Klein-Gordon equations (NKGE) by using multistep modified reduced differential transform method (MMRDTM). Through this proposed strategy, the non-linear term is substituted by associating Adomian polynomials obtained by utilization of a multistep approach. The NKGE solutions can be obtained with a reduced number of computed terms. In addition, the approximate solutions converge rapidly in a wide time region. Three examples are provided to illustrate the effectiveness of the proposed method to obtain solutions for the NKGE. Graphical results are shown to represent the behavior of the solution so as to demonstrate the validity and accuracy of the MMRDTM.
New model for compressive strength loss of lightweight concrete exposed to elevated temperatures
Authors: Kurtoglu Ahmet , Bakbak Derya
Published: February 2019

This study proposes a new model for the residual compressive strength of structural lightweight concrete after exposure to elevated temperatures up to 1000?C. For this purpose, a database of residual compressive strengths of fire exposed lightweight concrete was compiled from the literature. Database consisted a total number of 289 data points, used for generating training and testing datasets. Symbolic regression was carried out to generate formulations by accounting for various input parameters such as heating rate, cooling regime, target temperature, water content, aggregate type, and aggregate content. Afterwards, predictions of proposed formulation is compared to experimental results. Statistical evaluations verify that the prediction performance of proposed model is quite high.
Ekspor Karet Indonesia ke-15 Negara Tujuan Utama Setelah Pemberlakuan Kebijakan ACFTA
Authors: Lembang Marlina Banne , Pratomo Yulius
Published: February 2019

The objective of this study is to examine factors affecting Indonesia’s rubber export performance to Indonesia’s 15 main trading partners after the implementation of ACFTA. This research employs Bergstrand Gravity Model (1985) using 105 observation for 15 countries from 2004 to 2010. Then, the gravity model is estimated by applying random effects (RE) model. The results show that, first, GDP per capita of Indonesia’s main trading partners have significantly positive impact on export. Surprisingly, distance has significantly positive effect on Indonesia’s rubber export. Further, Indonesia’s rubber major export destinations are the member of ACFTA, i.e. China and Singapore. Last, some of the non member countries are still potential to be Indonesia’s rubber market. Therefore, the Government of Indonesia should increase trading with them.
A study on the role of economic factors in the employment differentiation
Authors:   Siberian University of Consumer Cooperation, Kapelyuk Zoya Aleksandrovna , Kapelyuk Sergey Dmitrievich ,   Siberian University of Consumer Cooperation
Published: February 2019

The research analyzes the occupational distribution of employees by sociodemographic groups at the regional level. The relevance of the study derives from the fact that an investigation of the intrare-gional characteristics of employment differentiation makes it possible to obtain more detailed infor-mation on the determinants of occupational segre-gation. The differences in the occupational distribu-tion are analyzed with the help of the Duncan dis-similarity index. The study findings indicate that regions differ substantially in the presence and level of segregation of international migrant workers. The authors suggest a hypothesis that the segregation is caused by the economic factors associated with higher productivity of mono-ethnic groups of em-ployees. To test the hypothesis, the researchers propose an econometric model based on the modi-fied Mincer wage equation. The model evaluation results demonstrate that both economic factors and ethnic discrimination of employees exert an influ-ence over segregation.
The evaluation of public expectations nature and Sevastopol business structure interest in the development of public-private partnership in social infrastructure sectors
Authors:   Sevastopol State University, Namkhanova Margarita Valentinovna , Alesina Natalya Valentinovna ,   Sevastopol State University, Strashko Ekaterina Viktorovna ,   Sevastopol Institute of  Economics and Humanities (branch) of  V.I. Vernadsky Crimean Federal University
Published: February 2019

The research determines the current development trends in the social sphere of the federal city of Se-vastopol and the possible use of public-private partnership to upgrade social enterprises of the re-gion. The relevance of development projects on so-cial infrastructure sectors differs according to the level of public satisfaction with the service quality of public health, pre-school educational, and cultural institutions. The increased and accelerated modern-ization rate of social enterprises is specified by the diversification of funding sources: in addition to public funding, it is necessary to use private invest-ment. The opportunities to attract private invest-ment to social enterprise modernization projects depend on the willingness of Sevastopol business community to deal with public-private partnership. The research findings make it possible to identify the areas for improvement of public health, pre-school educational, cultural, and tourism enterprises in Sevastopol. Nevertheless, not all entities in the region are aware of the potential of public-private partnership. An increase in business community motivation for being involved in social enterprise modernization will require public authorities to cre-ate a favorable environment for the enhancement of public-private partnership by developing measures to raise awareness of regional companies about the benefits of state-business cooperation.
The role of exchange control by Russian customs authorities
Authors:   Tyumen State University, Rostovshchikova Elena Evgenyevna
Published: February 2019

The research discusses the basics of exchange con-trol by customs authorities, evaluates its importance as a mechanism for ensuring the economic security of the state. The urgency of defining the role of ex-change control maintained by customs agencies is due to the fact that present-day suspicious currency transactions are mainly represented by transactions based on foreign trade contracts involving the sup-ply of goods. The study identifies the categories of currency offenses which pose a particular threat to the state in the form of illegal capital outflow: the non-receipt of currency export earnings and the non-recovery of import advance payments. The au-thor reveals the particular significance of the infor-mation interaction between customs authorities and authorized banks in order to prevent suspicious foreign exchange transactions.
ДОСЛІДЖЕННЯ ТА МОДЕЛЮВАННЯ ТЕХНОЛОГІЧНОГО ПРОЦЕСУ КОНТАКТНОГО ЗВАРЮВАННЯ ТРУБ
Authors: Radchenko Stanislav , Lapach Serhei
Published: February 2019

Актуальність теми дослідження. Завдяки високим міцнісним характеристикам і стійкості до агресивних середовищ полівінілхлоридні труби знаходять широке застосування в промисловому будівництві. При спорудженні трубопроводів виникає багато технічних проблем при визначенні оптимальних режимів зварювання труб.
Постановка проблеми. Використання статистичного моделювання дає змогу встановити причинні, структурні й кількісні зв'язки між групою керованих факторів і модельованими критеріями досліджуваних процесів і істотно підвищити ефективність вибору технологічних режимів контактного зварювання труб.
Аналіз останніх досліджень і публікацій. У процесі дослідження і вдосконалення складних систем і процесів доцільно використовувати побудову багатофакторних регресійних моделей.
Виділення недосліджених раніше частин загальної проблеми. Необхідним є системний підхід до отримання регресійних моделей: процес повинен включати побудову плану експерименту, формалізований вибір структури моделі, стійке оцінювання коефіцієнтів моделі.
Постановка завдання. Метою цієї роботи є використання методики регресійного аналізу для дослідження й побудови високоточних статистичних моделей характеристик процесу контактного зварювання полівінілхлоридних труб.
Виклад основного матеріалу. Дослідження було проведено за планом повного факторного експерименту 33//27, що дозволило отримати оцінки коефіцієнтів регресії незалежні (у статистичному сенсі) один від одного. Використання результатів дослідження дозволило побудувати адекватні, інформативні, стійкі моделі межі міцності на розтяг зварного шва, ступеня деструкції матеріалу зварного шва й коефіцієнта зварювання залежно від факторів, що впливають: температури нагрівника, часу оплавлення зварюваних торців, питомого тиску осадки.
Висновки відповідно до статті. З урахуванням побудованих статистичних моделей проведено аналіз впливу умов зварювання на характеристики якості зварного шва. Результати експерименту підтвердили доцільність запропонованого підходу і використаних методів моделювання.
Modelling of framework materials at multiple scales: current practices and open questions
Authors: Fraux Guillaume , Chibani Siwar , Coudert François-Xavier
Published: February 2019

The last decade has seen an explosion of the family of framework materials and their study, both from the experimental and computational point of view. We propose here a short highlight of the current state of methodologies for modelling framework materials at multiple scales, putting together a brief review of new methods and recent endeavours in this area, as well as outlining some of the open challenges in this field. We will detail advances in atomistic simulation methods, the development of materials databases, and the growing use of machine learning for properties prediction.
Observation of chemo-mechanical failure and influence of cut-off potentials in all-solid-state Li-S batteries
Authors: Zeier Wolfgang , Ohno Saneyuki , Koerver Raimund , Dewald Georg , Janek Juergen , Rosenbach Carolin , Titscher Paul , Steckermeier Dominik , Kwade Arno
Published: February 2019

Owing to a remarkably high theoretical energy density, the lithium-sulfur (Li-S) battery has attracted significant attention as a candidate for next-generation batteries. While employing solid electrolytes can provide a new avenue for high capacity Li-S cells, all-solid-state batteries have unique failure mechanisms such as chemo-mechanical failure due to the volume changes of active materials. In this study, we investigate all-solid-state Li-S model cells with differently processed cathode composites and elucidate a typical failure mechanism stemming from irreversible Li2S formation in the cathode composites. Reducing the particle size is key to minimizing the influence of volume changes and a capacity of over 1000 mAh gsulfur-1is achieved by ball-milling of the cathode composites. In addition, the long-term stability of the ball-milled cathode is investigated by varying upper and lower cut-off potentials for cycling, which results in unveiling the significantly detrimental role of the lower cut-off potential. Preventing a deep-discharge leads to a reversible capacity of 800 mAh gsulfur-1over 50 cycles in the optimized cell. This work highlights the importance of mitigating chemo-mechanical failure using microstructural engineering as well as the influence of the cut-off potentials in all-solid-state Li-S batteries.
VOCCluster: Untargeted Metabolomics Feature Clustering Approach for Clinical Breath Gas Chromatography - Mass Spectrometry Data
Authors: Alkhalifah Yaser , Phillips Iain , Soltoggio Andrea , Darnley Kareen , Nailon William H. , McLaren Duncan , Eddleston Michael , Thomas Paul , Salman Dahlia
Published: February 2019

Our unsupervised clustering technique, VOCCluster, prototyped in Python, handles features of deconvolved GC-MS breath data. VOCCluster was created from a heuristic ontology based on the observation of experts undertaking data processing with a suite of software packages. VOCCluster identifies and clusters groups of volatile organic compounds (VOCs) from deconvolved GC-MS breath with similar mass spectra and retention index profiles.
AS NAÇÕES, O IMPERIALISMO E A CIRCULAÇÃO DO SEGREDO: ALGUMAS REFLEXÕES SOBRE O CASO SNOWDEN
Authors: Vernik Esteban
Published: February 2019

O episódio ao qual irei me referir deve ser considerado por alguns ângulos particularmente interessantes: 1) o segredo e as sociedades secretas, e 2) as nações e as formas atuais de imperialismo, este último no sentido geral de intervenção de um país na soberania do outro.
SEGURANÇA E CONSTRUÇÃO DA PAZ NA AMÉRICA DO SUL: OS DESAFIOS APONTADOS PELA UPSALLA CONFLICT DATA PROGRAM E THE FUND FOR PEACE
Authors: Ferreira Marcos Alan Shaikhzadeh V. , Júnior Pedro Paulo Da Silva
Published: February 2019

O presente artigo pretende introduzir uma discussão em torno da Segurança na América do Sul com o argumento de que não vivemos necessariamente em uma zona de paz. A (quase) ausência de conflitos interestatais nas últimas décadas não se reflete em uma paz para a população comum de uma região que tem a infelicidade de apresentar um dos maiores índices de homicídios no mundo. Para apresentar os argumentos, começaremos com o debate teórico proporcionado pelos Estudos sobre a Paz, no qual Johan Galtung é um dos principais expoentes. Em seguida, mostraremos como algumas das entidades que são referência na análise de conflitos internacionais – a The Fund for Peace e a Universidade de Upsalla, Suécia – têm compreendido a região sul-americana no período de 2006-2012, na qual constam os dados mais atualizados da região. A análise dos dados dessas entidades demonstram que a violência predominante na América do Sul é eminentemente estrutural, fato que limita uma análise fundamentada em um exame focada somente nos atores estatais.Palavras-chave: Estudos sobre paz. Violência. América do Sul. Análise de conflitos.
O Novo Paradigma da Segurança na África: a Estratégia Securitária Regional Angolana
Authors: Bernardino Luis Manuel Brás
Published: February 2019

A participação da República de Angola na Arquitetura de Paz e Segurança Africana representa, no atual contexto subsaariano, o exemplo da procura de afirmação de uma potência regional em ascensão, que através de uma Política Externa participativa, influente e de compromisso, aposta numa dualidade estratégica de equilíbrio, em que as Forças Armadas Angolanas são empregues como instrumento de cooperação militar regional e de resolução de conflitos no seu espaço de interesse conjuntural, num quadro geopolítico em que a república de Angola se constitui como membro não permanente do Conselho de Segurança das Nações Unidas.
Reflexiones sobre la relación entre la comunidad académica de defensa y el CDS
Authors: Vitelli Marina
Published: February 2019

El artículo pone en valor el rol de los expertos académicos en las iniciativas de cooperación regional. Si bien el CDS valoriza las instancias de investigación y reflexión sobre conceptos y enfoques de defensa, no incluye de forma apropiada a la comunidad académica de estudios de defensa existente en Sudamérica.
Por uma Nova Ontologia da Defesa
Authors: Soares Samuel Alves
Published: February 2019

Ensaio acerca de como se desenvolveram os Estudos de Defesa no Brasil ecomo, no momento atual, é preciso que a área encontre o seu lugar na produçãoacadêmica brasileira. É preciso tomar um cuidado entre o extremodo isolamento e da desconsideração e a excessiva fragmentação, de modoa garantir uma perspectiva mais institucionalizada que viabilize a consolidaçãoda Defesa como área do conhecimento científico, respeitando umlegado histórico que demanda um fortalecimento constante.
Agenda de Pesquisa sobre o Espaço Cibernético nas Relações Internacionais
Authors: Portela Lucas Soares
Published: February 2019

O objetivo deste artigo é vislumbrar as pesquisas sobre espaço cibernético nas Relações Internacionais. A metodologia utilizada para tal é a revisão bibliográfica e o levantamento de dados sobre produções científicas na JSTOR e SciElo. Conclui-se que o maior número de produções na área é em defesa e segurança cibernética.
Securitization and the Political: contributions from Hannah Arendt
Authors: Motta Barbara , Pimentel Cauê
Published: February 2019

In the past few years, many scholars keen to the Copenhagen School (CS) turned to the works of the German political scientist Carl Schmitt in order to strengthen the philosophical foundations of the theory, especially the disputed concept of exception. Schmitt is a singular and important contribution to the debate, however his definition of the political makes securitization concept more conservative and a more unilateral event as politics would only be explicit in the exception spectrum. Our idea in this brief paper is to present a contribution to this discussion coming from a less considered perspective: the works and writings of Hannah Arendt. We will examine how her ideas towards politics and the exception can shed a light on the same issues that Schmitt seems to blur even further. We believe that bringing Hannah Arendt to the debate offers a different understanding of the foundational problems of the securitization concept and enhances the normative appeal of the theory towards a broader and more sophisticated base, opening new paths for research and discussion under the framework of the Copenhagen School.
Resenha de: Beach, Derek. 2012. Analyzing Foreign Policy
Authors: Dhenin Miguel
Published: February 2019

Resenha do livro "Analyzing foreign policy", lançado em 2012 pela editora Palgrave McMillan, de autoria do professor Derek Beach.
Pesquisa na Educação Superior Militar: uma perspectiva pedagógica
Authors: Duran Débora
Published: February 2019

As questões relacionadas à Educação Superior Militar podem ser investigadas com base em diferentes aportes teóricos. Como contribuição e como desafio propomos, nos contornos deste trabalho, um foco pedagógico para o estudo sobre a pesquisa como princípio científico e educativo na Educação Superior Militar.