bluuebunny/crossref_metadata_2025 huggingface dataset:
Transplantation of human mobilized mononuclear cells improved diabetic neuropathy
Authors: Min Se Hee , Kim Jung Hee , Kang Yu Mi , Lee Seung Hak , Oh Byung-Mo , Han Kyou-Sup , Zhang Meihua , Kim Hoe Suk , Moon Woo Kyung , Lee Hakmo , Park Kyong Soo , Jung Hye Seung
Published: September 2018

Rodent stem cells demonstrated regenerative effects in diabetic neuropathy via improvement in nerve perfusion. As a pre-clinical step, we explored if human mobilized mononuclear cells (hMNC) would have the same effects in rats. hMNC were injected into Rt. hind-limb muscles of streptozotocin-induced diabetic nude rats, and the grafts were monitored using with MRI. After 4 weeks, the effects were compared with those in the vehicle-injected Lt. hind limbs. Nerve conduction, muscle perfusion and gene expression of sciatic nerves were assessed. Induction of diabetes decreased nerve function and expression of Mpz and Met in the sciatic nerves, which are related with myelination. hMNC injection significantly improved the amplitude of compound muscle action potentials along with muscle perfusion and sciatic nerve Mpz expression. On MRI, hypointense signals were observed for 4 weeks at the graft site, but their correlation with the presence of hMNC was detectable for only 1 week. To evaluate paracrine effects of hMNC, IMS32 cells were tested with hepatocyte growth factor (HGF), which had been reported as a myelination-related factor from stem cells. We could observe that HGF enhanced Mpz expression in the IMS32 cells. Because hMNC secreted HGF, IMS32 cells were co-cultured with hMNC, and the expression of Mpz increased along with morphologic maturation. The hMNC-induced Mpz expression was abrogated by treatment of anti-HGF. These results suggest that hMNC could improve diabetic neuropathy, possibly through enhancement of myelination as well as perfusion. According to in vitro studies, HGF was involved in the hMNC-induced myelination activity, at least in part.
An Exceptional Cause of Drug-Induced Colitis: Cholestyramine
Authors: Branco Joana C , Alexandrino Gonçalo , Alves António , Reis Jorge
Published: September 2018

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Treatment of Refractory Mastocytic Enterocolitis with Budesonide
Authors: Kuruvilla Merin Elizabeth , Mathew Sonia , Avadhani Vaidehi
Published: September 2018

Mast cells (MCs) are being increasingly implicated as a possible contributor to symptoms in diarrhea predominant irritable bowel syndrome (IBS). The term “mastocytic enterocolitis” was proposed to describe an increase in mucosal MCs in patients with chronic diarrhea due to functional gastrointestinal disease (FGID). The efficacy of anti–MC mediator therapy (antihistamines and MC stabilizers) has been well documented in this setting. Here we describe the treatment with oral budesonide of mastocytic enterocolitis refractory to standard anti-MC therapy.
Serum Cytokines Profile in Treated Celiac Disease Compared with Non-celiac Gluten Sensitivity and Control: a Marker for Differentiation
Authors: Heydari Fatemeh , Rostami-Nejad Mohammad , Moheb-Alian Ali , Mollahoseini Mostafa Haji , Rostami Kamran , Pourhoseingholi Mohamad Amin , Aghamohammadi Elham , Zali Mohammad Reza
Published: September 2018

Background & Aims: There is increasing evidence regarding elevated serum levels of inflammatory cytokines in patients with celiac disease (CD), but little is known about their levels in patients with non-celiac gluten sensitivity (NCGS). The aim of this study was to evaluate the serum levels of inflammatory cytokines in Iranian patients with CD and NCGS and to compare them with those of healthy individuals.

Methods: A total of 110 treated CD, 15 with NCGS, and 46 healthy subjects were enrolled during 2016. Serum levels of IL-1, IL-6, IL-8, IL-15 and IFN-γ were measured using ELISA, and compared between groups. The correlation of the severity of mucosal damage and clinical symptoms with serum levels of cytokines was also assessed.

Results: The mean serum levels of IFN-γ (p = 0.04) and IL-6 (p = 0.007) were significantly different between the patients in the CD and control groups, and IL-8 was significantly higher in the CD group compared with patients in the NCGS group (p = 0.04). Statistically significant correlations were observed between the serum levels of IFN-γ and abortion (p = 0.01), IL-1 and weight loss (p = 0.043) and infertility (p = 0.0001) in CD patients, and between IFN-γ and abortion (p = 0.01) and infertility (p = 0.01) in the NCGS patients. Moreover, no significant relationship was observed between the severity of mucosal damage and the serum level of the studied cytokines.

Conclusions: Inflammatory cytokines are implicated in the pathogenesis of CD, and their serum levels might help to identify a diagnostic marker to differentiate CD from NCGS. However, further studies with a larger sample size are recommended.
Effect of S-Adenosyl-L-Methionine on Liver Biochemistry and Quality of Life in Patients with Primary Biliary Cholangitis Treated with Ursodeoxycholic Acid. A Prospective, Open Label Pilot Study
Authors: Wunsch Ewa , Raszeja-Wyszomirska Joanna , Barbier Olivier , Milkiewicz Malgorzata , Krawczyk Marcin , Milkiewicz Piotr
Published: September 2018

Background & Aims: Chronic liver disease induces an acquired deficiency of S-adenosyl-L-methionine (SAMe) leading to impairment of detoxifying processes in the liver. Ursodeoxycholic acid (UDCA) represents the standard treatment in primary biliary cholangitis (PBC). As both compounds exert their hepatoprotective effects by different mechanisms, it is conceivable that when used together their effect might be additive.

The aim of this study was to analyse the effect of SAMe supplementation on liver biochemistry and health-related quality of life (HRQoL) in patients with PBC, treated with UDCA.

Methods. In this prospective pilot, proof of the principle, non-randomized and open label study we enrolled 24 patients with PBC treated with UDCA for at least 6 months. They had received both UDCA in a standard dose of 13-15 mg/kg b.w. and SAMe in the dose of 1200 mg daily over a period of 6 months. A group of 24 patients with PBC treated with UDCA served as control for liver biochemistry (Study registered on the platform ClinicalTrials.gov under ID: NCT02557360).

Results. We observed a significant decrease of ALP, GGT and total cholesterol in non-cirrhotic patients treated with SAMe. There was also a significant improvement of fatigue and pruritus in PBC-40 questionnaire and amelioration of anxiety in STAI 2 questionnaire in the SAMe group. Treatment with SAMe neither increased sulfation capacity of the liver nor had an effect on fibroblast growth factor-19 serum levels.

Conclusions. Our pilot study demonstrates a positive effect of adding SAMe to UDCA in non-cirrhotic patients with PBC.
Usefulness of the Modified Clip-with-Line Method for Endoscopic Mucosal Treatment Procedure
Authors: Soga Koichi , Shimomura Takahito , Suzuki Toshio , Tei Tesshin , Usui Tomohiko , Inagaki Yoshikazu , Kassai Kyoichi , Itani Kenji
Published: September 2018

Endoscopic submucosal dissection (ESD) might be difficult to perform in some cases even for experienced endoscopists. Recently, various traction methods have been introduced to facilitate ESD procedures, such as clip-with-line (CL), external forceps, clip and snare, internal traction, double scope, and magnetic anchor.The traction procedure using the CL method enhances the visibility of the operation field during ESD. The original CL method is performed as follows: the clip with the line (e.g., dental floss) is attached to the edge of the lesion. Traction can be produced by pulling the line gently, thus achieving a sufficient visualization of the submucosal layer to identify an accurate cutting line. Herein, we present a useful modified two-CL method by pulling the appropriate normal mucosa to enhance the visibility of the operation field during ESD procedure. Thus, the traction methods, including our modified CL technique, might reduce the procedure time and complications.
Paraneoplastic Colonic Ulcers in an Immunodepressed Patient
Authors: Voiosu Andrei Mihai , Voiosu Theodor Alexandru , Popp Cristiana , Mateescu Radu Bogdan
Published: September 2018

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Magnetogenesis in Natural Inflation Model
Authors: Kamarpour M. , Sobol O.
Published: September 2018

We study the process of inflationary magnetogenesis in the natural single-field inflation model, whose parameters are chosen in accordance with the recent observations by the Planck collaboration [1]. The conformal invariance of the Maxwell action is broken by a kinetic coupling with the inflaton field by means of the coupling function as a power of the scale factor, I(ф) ∝ aa, and a < 0 is used in order to avoid the strong coupling problem. For such a, the electric component of the energy density dominates over the magnetic one and, for a <- −2.2, it causes a strong back-reaction, which can spoil inflation and terminate the enhancement of the magnetic field. It is found that the magnetic fields generated without back-reaction problem cannot exceed ∼10−20G at the present epoch, and their spectrum has a blue tilt.
Sm3+-Doped Molybdenum Gadolinium Borate Glasses for Orange Emission Laser Active Medium
Authors: Rajaramakrishna R. , Ruangtawee Y. , Kaewkhao J.
Published: September 2018

Room temperature visible and near infrared optical absorption and emission spectra of Sm3+-doped molybdenum gadolinium borate (MGB) glasses with molar composition 25MoO3-20Gd2O3–(55 − x)B2O3−xSm2O3 (x = 0.05, 0.1, 0.5, 1.0, 2.0 mol.%) have been analyzed. The experimental oscillator strengths of absorption bands have been used to determine the Judd–Ofelt (J–O) parameters. Fluorescence spectra were recorded by exciting the samples at 402 nm. Using the J–O parameters and luminescence data, the radiative transition probabilities (AR), branching ratios (BR), and stimulated emission cross-sections oe) are obtained. The decay curves of the 4G5/2 - 6H7/2 transition exhibit a non-exponential curve fit for all concen-trations. The concentration quenching has been attributed to the energy transfer through the cross-relaxation between Sm3+ ions. 4G5/2 level and its relative quantum efficiencies are measured. Intense reddish-orange emission corresponding to the 4G5/2−6H7/2 transition has been observed in these glasses at the 487-nm excitation, From the values of the radiative parameters, it is concluded that the 1.0-mol% Sm3+-doped MGB glass may be used as a laser active medium with the emission wavelength at 599 nm. The analysis of the non-exponential behavior of decay curves through the Inokuti–Hirayama model indicates that the energy transfer between Sm3+ ions is of dipole–dipole type. The quantum efficiency for the 4G5/2 level of MGBSm10 glass is found to be 67%. The co-related color temperature obtained from CIE (Commission International de L’Eclairage) for these glass samples is ∼1620 K for the indicated orange emission at the 402-nm excitation.
Role of Double Layers in the Formation of Conditions for a Polarization Phase Transition to the Superradiancestate in the Io Flux Tube
Authors: Novak O. , Kholodov R. , Fomina A.
Published: September 2018

A possibility of the electron phase transition into cyclotron superradiance mode in a vicinity of the Io flux tube foot in the Jovian magnetosphere has been considered. A high power of cyclotron superradiance allows it to be considered as the main mechanism of decameter Jupiter radiation generation in the form of S-bursts. It was found that the downward electron beams emitted by Io are able to create electric double layers in the form of shock waves. Such waves, when moving along the flux tube, accelerate electrons in the magnetosphere. As a result, the temperature of the electron plasma component decreases considerably. The emerging upward electron beams create conditions favorable for the phase transition into the cyclotron superradiance mode to take place.
Features of Microstructure of Chemically Obtained Graphene-Like Particles
Authors: Ovsiienko I. , Len T. , Matzui L. , Lazarenko O. , Le Normand F. , Shames A.
Published: September 2018

The graphene-like structures are investigated by methods of electron microscopy, EMR, and Raman spectroscopy. They were obtained by the chemical treatment and the sonication in different reagents. As a source for obtaining the graphene-like structures, the thermoexfoliated graphite was used. The number of graphite layers in the graphene-like structures, the shapes of individual particles, structural-morphological characteristics, and the homogeneity of the sizes of particles for specimens of the graphene-like structures obtained with different methods are estimated.
Medical Marijuana for Minors May Be Considered Child Abuse
Authors: Hines Larissa , Glick Jill , Bilka Kristin , Lantos John D.
Published: September 2018

The Food and Drug Administration categorizes marijuana (cannabis) as a Schedule I drug, meaning that it has no currently accepted medical use, a high potential for abuse, and no good data on safety. Other Schedule I drugs are heroin, lysergic acid diethylamide, peyote, methaqualone, and 3,4-methylenedioxymethamphetamine (“ecstasy”). The authors of some studies have shown that marijuana can reduce nausea and vomiting from chemotherapy, can improve food intake in patients with HIV, can reduce neuropathic pain, and may slow the growth of cancer cells. In many states, marijuana use is illegal. No state has approved its use for children. What, then, should doctors do if they become aware that parents are using marijuana to treat medical conditions in their children? What if the children have adverse reactions to the marijuana? In this Ethics Rounds, we present such a case and ask experts in child protection and child abuse to discuss the appropriate response.
Freshwater microcrustaceans (Cladocera: Anomopoda and Ctenopoda, Copepoda: Cyclopoida and Calanoida) in the highly urbanized Metropolitan Manila area (Luzon, Philippines)
Authors: Dela Paz Erica Silk P. , Lopez Mark Louie D. , David Christian Irvin Harvey A. , Dela Cruz Dave Ryan A. , Viernes Gian Alfonso A. , Wong Jac Fritgerald , Papa Rey Donne S.
Published: September 2018

Despite the increasing interest in studying Cladocera and Copepoda in Philippine freshwaters, there is a need to update our knowledge on its taxonomy and distribution in highly urbanized areas, such as Metropolitan Manila. This paper presents an updated listing of freshwater microcrustaceans and their distribution in Metropolitan Manila, considering the continued deterioration of water quality and increased urbanization in many areas since the last comprehensive study on these taxa in 1950s. We collected water samples from 33 freshwater sites in Metropolitan Manila and 23 of which were found to contain microcrustacean zooplankton. A total of 13 species were identified including two new locality records for C. cornuta and D. dubium in Pasig River. All 8 cladocerans, we identified have already recorded in previous studies while 3 cyclopoid copepods are new records for Metropolitan Manila. Furthermore, 16% of all known freshwater microcrustacean zooplankton species in the Philippines are found in Metropolitan Manila, including the Luzon-endemic Filipinodiaptomus insulanus collected from man-made reservoirs in less-disturbed habitats (an urban wildlife park, golf course and eco-park). Other identified species such as Thermocyclops taihokuensis may serve as indicator for high levels of nutrient. These results point to the importance of monitoring urban aquatic biodiversity for their potential in determining aquatic ecosystem health and of maintaining urban aquatic sanctuaries which may serve as alternative habitat for flora and fauna in rapidly developing urban centers such as Metropolitan Manila.
ALGINATE/CHITOSAN FILM LOADING GOLDEN FLOWER TEA (CAMELLIA CHRYSANTHA) EXTRACT: PREPARATION AND CHARACTERIZATION
Authors: Nguyen Chinh Thuy , Luong Hoang Phu , Vu Trung Quoc , Thai Hoang
Published: September 2018

Golden Flower Tea has the scientific name Camellia chrysantha. It can effectively enhance human immune function, prevent and fight cancer, be anti-aging and prolongs life, and be a powerful antioxidant. Polymer systems loading Golden Flower Tea extract can enhance their solubility and effectivity in simulated body solutions such as stomach or intestine environments. In this paper, chitosan and alginate, two natural polymers, were selected for the preparation of chitosan/alginate loading Golden Flower Tea extract thanks to their many advantages. The method was used in preparation of chitosan/alginate film loading Golden Flower Tea extract is solution method with appreciated solutions for each substance. The suitable ratio of alginate/chitosan obtained from previous studies is 7/3. The characteristics of these films are evaluated by Fourier Transform Infrared (FT-IR) spectroscopy, Scanning Electron Microscopy (SEM), and Differential Scanning Calorimetric (DSC) methods. The obtained results show that polyphenols interact and disperse regularly in polymer matrix.
HYBRID COMPOSITE BASED ON MAGNETITE/ CHITOSAN FOR 2,4-D AND CHRYSOIDINE REMOVAL
Authors: Han Duy Linh , Cao Phuong Anh , Popa Marcel , Nguyen Xuan Hoan
Published: September 2018

In this study, magnetite nanoparticles, chitosan, a hybrid composite of magnetite/chitosan were prepared through a simple method. The prepared materials were characterized via Fourier transform infrared spectroscopy, X-ray diffraction, vibrating sample magnetometer, Laser diffraction particle size analyzer, and Zeta Potential. Then, the adsorption capacity of these materials for chrysoidine, 2,4-dichlorophenoxyacetic acid (2,4-D) removal were also determined in the same condition. Prepared materials have the ability to adsorb selectivity with Chrysoidine and 2,4-D. There results show the potential application of hybrid composite magnetite/chitosan in the field of environmental treatment.
MICROENCAPSULATION OF MERCAPTAN USING POLYCAPROLACTONE AS SHELL MATERIAL TOWARD SELF-HEALING COATING APPLICATIONS
Authors: Truong Thuy Thu , Nguyen Le-Thu T.
Published: September 2018

Polymer materials incorporating microencapsulated self-healing agents have a wide range of application from paint coating, anti-corrosion coatings to automotive and construction materials. In this research, microcapsules containing reactive mercaptan compound for use in self healing polymers were successfully fabricated via the oil-in-water emulsion method. We employed for the first time the UV-initiated thiol-ene reaction between an alkene-functionalized polycaprolactone and a tetrathiol compound to form the microcapsule shell. To synthesize microcapsules, the tetrathiol was used in large excess, thus maintaining inside the microcapsules as the core material. The obtained microcapsules were analyzed by Fourier Transform infrared microscopy, optical microscopy, scanning electron microscopy (SEM) and laser diffraction particle size analysis. The core was extracted by Soxhlet extraction and analyzed by 1H NMR and FTIR spectroscopy.
NICKEL-BASED MULTIWALLED CARBON NANOTUBE COMPOSITE COATINGS
Authors: Thang Bui Hung , Toan Nguyen Xuan , Phuong Nguyen Viet , Hau Tran Van , Hong Nguyen Thi , Trac Nguyen Ngoc , Lam Vu Dinh , Minh Phan Ngoc
Published: September 2018

Carbon nanotubes (CNTs) have been widely known as nanomaterials with excellent mechanical properties. Previous studies reported that the tensile strength of multi-walled carbon nanotubes (MWCNTs) was up to 63 GPa and single-walled carbon nanotubes (SWCNTs) could reach 150 GPa while the highest tensile strength of the steel was found to be about 1.8 GPa. SWCNTs could have Young’s modulus up to 1000 GPa that was much greater than the value of 209 GPa of steel. Therefore, there is a great potential to utilize CNTs as reinforced materials for composites in general and Ni electrodeposition coating in particular to improve hardness, durability, corrosion, and other physical and mechanical properties. This paper presents results of preparing and examining characteristics of the Nickel electrodeposition coatings containing MWCNTs (Ni-MWCNTs). The Ni-MWCNTs composite coatings deposited on a steel plate with the area of 0.4 dm2 using bipolar pulses at 470 Hz and 50oC in a 5-liter bath. Amount of CNTs varying from 1 g/l to 3 g/l was dispersed into the solution by using surfactants and ultrasonic vibration. CNTs used in the study was MWCNTs diameters in the range from 20 to 90 nanometers and few micrometers in length. The SEM, EDS, hardness and adhesion tests were conducted to analyze the properties of the electrodeposition coatings. The obtained results indicated that the hardness and adhesion of the Ni-CNTs coating were 1.5 and 1.46 times, respectively, higher than those of the Ni coating. In addition, adhesion of the Ni-CNTs coating was significantly improved.
EFFECT OF CaCO3 FILLER ON THE DEGRADATION OF HIGH DENSITY POLYETHYLENE (HDPE) FILM CONTAINING PROOXIDANTS
Authors: Nguyen Khoi Van , Nguyen Tung Thanh , Nguyen Duc Trung , Pham Ha Thi Thu
Published: September 2018

The aim of this work is investigation of effect of CaCO3 filler on the degradation of high density polyethylene (HDPE) films containing stearate salts as prooxidant additves. The films with thickness of 30 µm were prepared by adding 0.3 % (w/w) prooxidant additives mixture (manganese (II) stearate/feric stearate/cobalt (II) stearate ratio of 18:4:1) and CaCO3 filler from 5 to 20 % (w/w) in HDPE resins using twin screw extruder. The films were carried out accelerated weathering treatment according to ASTM G154 standard (340 nm UV lamp, 8 hours UV, 4 hours condensation at 50 0C) for maximum duration of 96 hours. The mechanical properties, FTIR analysis, Differential Scanning Calorimetry (DSC), Thermo gravimetric analysis (TGA) and Scanning Electron Microscope (SEM) were used to assess the changes in the structure and surface morphology of films during accelerated weathering. The results showed that the degradation rate of HDPE films decreased by adding CaCO3 filler and versused with CaCO3 filler content. FTIR traces revealed that CaCO3 filler didn’t affect to the mechanism of polyethylene degradation. After 96 hours of aceelerated weathering treatment, the elongation at break of the HDPE film with 5 % CaCO3 almost unchanged while this value of the HDPE films with 10 and 20 % CaCO3 decreased significantly (96 % and 100 %, respectively).
INFLUENCE OF GRAPHENE OXIDE ON THE CORROSION INHIBITION EFFECT OF HYDROTALCITE LOADED WITH 2-BENZOTHIAZOLYTHIO-SUCCINIC ACID
Authors: Nguyen Thuy Duong , Tran Boi An , Phan Thanh Thao , Nguyen Anh Son , Vu Ke Oanh , Trinh Anh TRuc , Thi Xuan Hang To , Olivier Marie-Georges
Published: September 2018

Hydrotalcite intercalated with 2-benzothiazolylthio-succinic acid and graphene oxide (HT-BTSA/GO) was synthesized by co-precipitation method. Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) were used to characterize obtained HT-BTSA/GO. The release of BTSA from HT-BTSA/GO in NaCl solution at different concentrations was investigated by UV-Vis spectroscopy. HT-BTSA/GO was incorporated in solvent free epoxy coatings at concentration of 1 wt% and the corrosion protection of these coatings on carbon steel were examined by salt spray test and adhesion measurement. It was shown that GO and BTSA were intercalated in hydrotalcite structure and BTSA content was about 19.7 wt%. The release of BTSA from HT-BTSA/GO depended on chloride ion concentrations. After 72 h immersion in 0.1 M and 0.5 M NaCl solutions, the BTSA release were about 19.3 % and 61.0 % respectively. The presence of HT-BTSA/GO improved the corrosion resistance and adhesion of solvent free epoxy coatings. The corrosion protection performance of coatings containing HT-BTSA/GO was higher in comparison to the coating containing HT-BTSA.
ATMOSPHERIC CORROSION RESISTANCE OF TRIVALENT AND HEXAVALENT CHROME CONVERSION COATING ON ZINC ELECTRODEPOSITS IN HANOI AFTER 5 YEARS NATURAL EXPOSURE
Authors: Hương Nguyễn Thị Thanh , Thắng Lê Bá , Bảo Lê Đức , Thủy Đào Bich
Published: September 2018

In this paper, the corrosion resistances obtained after five year exposure of zinc coatings, trivalent chrome conversion coatings (CCCs) and hexavalent CCCs on zinc electroplatings are compared and discussed. The compositions of corrosion products of sample surfaces after exposure are investigated. The results of analysis by means of X-ray diffraction show that the corrosion products formed on zinc coatings, trivalent CCCs, hexavalent CCCs in atmospheric conditions of Hanoi have the distinctions specialty of the humid tropical climates. Zinc sulfate hydroxide hydrate Zn4SO4(OH)6.H2O; Zinc carbonate hydroxide hydrate Zn4CO3(OH)6.H2O; Simonkolleite Zn5(OH)8Cl2.H2O; Chromium Sulfate Cr2(SO4)3; Zinc chloride sulfate hydroxide hydrat Zn12(OH)15(SO4)3Cl3.H2O; Eskolaite Cr2O3 have been identified. The presence of SO2 results in the formation of Zinc sulfate hydroxide hydrate Zn4SO4(OH)6.H2O. After 5 years of exposure in atmospheric conditions, the hexavalent CCCs on zinc coatings have show the best corrosion resistance and the least corrosion products. The corrosion resistance of the samples decreases in the order: 747 > SP25 ~ TM 3108 > Zn.
THE ROLE OF COUNTER ANIONS IN ANTICORROSIVE PROPERTIES OF SILICA-POLYPYRROLE COMPOSITE
Authors: Vũ Thị Hải Vân Hải Vân Thị
Published: September 2018

Silica/Polypyrrole (SiO2/PPy) composites were synthesized in the presence of different counter anions as oxalate (Ox), benzoat (Bz) and dodecyl-sulfate (DoS). The morphology and properties of composites were characterized by FTIR, EDX, SEM, TGA and CV method through the two-point-electrode. The synthesized composites were loaded in polyvinylbutyral (PVB) to develop coating for mild steel substrates. A comparative study of the corrosion protection efficiency of carbon steel coated with PVB and PVB containing composites was evaluated by measurement of open circuit potential (OCP), Tafel polarization and electrochemical impedance spectroscopy (EIS). It was found that SiO2/PPyOx could provide much better protection, with the lowest current density (4.81×10-8 A.cm-2 and highest impedance modulus (6.25×10-8 Ω.cm-2) when compared with SiO2/PPyDoS and SiO2/PPyBz due to the small size and inhibitive ability of oxalate anion.
Procedimento para determinar a maturidade em gestão de projetos baseado na norma NBR ISO 21500:2012
Authors: Avileis Junior Laercio , Novaski Olívio , Anholon Rosley , Pinto Jefferson de Souza
Published: September 2018

Este trabalho tem como objetivo apresentar um procedimento para determinar a aturidade em Gestão de Projetos, procedimento este baseado na Norma NBR ISO 21500:12 que pode ser aplicado na avaliação do desempenho do gerenciamento de projetos e contribuir para o sucesso do projeto. Com tal objetivo,desenvolveu-se um questionário com 39 questões associadas aos processos da norma. O questionário foi submetido às empresas que faziam o gerenciamento de seus projetos de forma organizada e às empresas que tinham como produto final projetos. O método de pesquisa adotado foi o de estudo de campo. Ou seja, por meio de uma pesquisa de natureza exploratória e descritiva, investigou-se a importância dos processos de gerenciamento de projetos. As respostas obtidas pelo questionário foram avaliadas a partir do método estatístico Análise de Componentes Principais. Criou-se, destarte, uma parametrização que permite a ontuação por questão e que avalia o nível do gerenciamento de projetos da organização. Tais valores e critérios, por fim, servirão como referência às empresas que desejam otimizar continuamente seus processos através de avaliações sistemáticas e relatórios de lições aprendidas.
Análise das dimensões de sucesso em projetos de bens de capital: uma abordagem explorando a perspectiva soft e hard em projetos
Authors: Cruz Cristiane Esteves , Scur Gabriela , Carvalho Marly Monteiro de
Published: September 2018

Questões soft têm sido identificadas como fatores chave no sucesso em projetos. A visão de sucesso em projetos evoluiu principalmente em função das exigências dos stakeholders. Nesse contexto, este estudo teve como objetivo investigar as dimensões de sucesso em projetos, explorando as perspectivas soft e hard em projetos. A abordagem metodológica foi de estudo de caso em três projetos. Os resultados evidenciaram importantes as dimensões de produto, equipe, cliente, negócios e sustentabilidade no sucesso dos projetos analisados além das dimensões tradicionais. Observou-se expressiva relevância dos aspectos soft na gestão dos projetos analisados e também influência do stakeholder, tipo de projeto e fase do projeto.
Os aspectos organizacionais e a mortalidade da pequena empresa: descrição dos fatores relevantes no setor de varejo de vestuário
Authors: Albuquerque Alexandre Farias , Escrivão Filho Edmundo , Nagano Marcelo Seido , Terence Ana Cláudia Fernandes
Published: September 2018

O objetivo deste artigo é descrever os fatores de mortalidade relacionados aos aspectos organizacionais da pequena empresa e a mudança de importância desses fatores ao longo dos estágios do ciclo de vida. As pesquisas sobre mortalidade de pequenas empresas ignoram suas especificidades e o estágio do ciclo de vida no momento do encerramento. Foram estudadas sete empresas do varejo de vestuário. Os dados foram coletados por meio de entrevistas e documentos e analisados por meio da técnica de análise de conteúdo. A importância dos fatores relacionados à tecnologia, estrutura organizacional e planejamento variou ao longo dos estágios do ciclo de vida da empresa.
Utilização do Overall Equipment Effectiveness (OEE) em células de manufatura considerando o takt time
Authors: Gomes Leonardo de Carvalho , De Faria Corrêa Ricardo Gonçalves
Published: September 2018

Dentre as formas de medição e melhoria da eficiência de processos industriais, destaca-se a utilização do Overall Equipment Efectiveness (OEE) também conhecido como Índice de Eficiência Global. Este indicador de eficiência caracteriza-se por considerar no cálculo os fatores: utilização do tempo disponível; o ritmo; e a qualidade do do produto. O OEE tem sido implementado largamente para o controle e melhoria de máquinas. Porém, quando o mesmo é implementado em células de manufatura, existem parâmetros que devem ser discutidos e ajustados, como qual o tempo padrão utilizar, visto que as máquinas em uma célula possuem tempos padroes diferentes. A proposta do presente artigo é utilizar o  Takt time como tempo padrão no cálculo do OEE como a forma mais correta de medir a eficiência em uma célula de manufatura. Através de um estudo de caso em uma empresa metalúrgica, foi demonstrado que a forma mais adequada para medição do OEE em uma célula de manufatura é usando o takt time.
Avaliação da cabotagem como opção de modal logístico: estudo de caso de uma metalúrgica nordestina
Authors: Sousa Rebeca Almeida , Leopoldino Cláudio Bezerra
Published: September 2018

A navegação de cabotagem é uma das principais modalidades de transporte aquático, realizando a movimentação de mercadorias porto a porto. No Brasil, apresenta-se como categoria de transporte emergente, apresentando aumento de utilização na matriz de transportes nacional. O presente artigo faz uma avaliação da performance do modal de cabotagem em uma empresa do setor metalúrgico no estado do Ceará. O método adotado para essa pesquisa foi o estudo de caso, com análise de documentos, dados do sistema da empresa investigada e simulação de custos com a utilização da navegação de cabotagem como modal de transporte alternativo. As principais variáveis analisadas compreendem volume, custo e tempo. Foram evidenciadas vantagens e desvantagens na sua utilização para o transporte de cargas. Os principais gargalos foram identificados e mapeados para propor melhorias. Os resultados obtidos com o estudo mostraram um ganho em volume por peso transportado e uma redução nos custos de fretes na organização com a adoção da cabotagem. O tempo de entrega, entretanto, salienta-se como um principal fator de ineficiência para a sua aplicação na empresa, pois este indicador sofre a influência de problemas de infraestrutura, procedimentos burocráticos e fiscais que tornam as operações de cabotagem pouco atrativas ao mercado.
The Effects of Experiential Components on Gain and Loss Values in the Hospitality and Tourism Experience Economy
Authors:   The Tourism Sciences Society Of Korea, Chang Seo-Hee
Published: September 2018

Derived from the theory of experienced utility where individuals make a decision based on hedonic gains rather than capital gains, the experience economy suggests that industries should increase their revenue by increasing consumers’ hedonic experiences. Such decision makers also tend to heuristically evaluate potential hedonic losses. Therefore, this study investigated the gain values and experience loss values of hospitality and tourism products and influential experiential components. A total of 543 usable responses collected through an online survey company were analyzed using descriptive analysis and regression analysis. The results showed that many respondents preferred to purchase nature/sightseeing-related products, paying an average of $230, but with approximately 41% as experience loss values. More specifically, novelty, relaxation, and personal relevance positively influenced the perceived financial values of hospitality and tourism products, whereas, novelty and educational values had positive influences on the perceived experience loss values associated with the corresponding product. More discussion is included about managing gain and loss values.
CALIDAD DEL SERVICIO DE LAS RESIDENCIAS UNIVERSITARIAS Y LASATISFACCIÓN DE LOS ESTUDIANTES INTERNOS EN UNA UNIVERSIDAD PRIVADA CONFESIONAL
Authors: Carrera Fernández Mirla
Published: September 2018

El objetivo de esta investigación es determinar la relación que existe entre la calidad del servicio de las residencias universitarias y la satisfacción de los estudiantes internos de una universidad privada confesional. La investigación es descriptiva, correlacional, no experimental de diseño transversal. Para medir la calidad del servicio se utilizó el modelo servqual, y para medir la satisfacción se utilizó un instrumento basado en los elementos de satisfacción de Kotler. La muestra es de 225 estudiantes internos pertenecientes a las residencias de la universidad privada confesional. Para determinar la correlación se utilizó el coeficiente de correlación Rho de Spearman. Los resultados mostraron un p-valor (Sig.) de 0,000 y un coeficiente de correlación de 0.778. Por lo tanto, se llegó concluyó que existe relación significativa y fuerte entre la calidad del servicio de las residencias universitarias y la satisfacción de los estudiantes internos de la universidad privada confesional
USO PROBLEMÁTICO DE INTERNET Y CALIDAD DE VIDA EN UNIVERSITARIOS DE UNA INSTITUCIÓN PRIVADA CONFESIONAL DE MEDELLÍN, COLOMBIA, 2017
Authors: González Anaya Germán Arturo
Published: September 2018

El objeto de este estudio es observar la relación entre el usoproblemático del internet y la calidad de vida en estudiantesuniversitarios. Se llevó a cabo por medio de un estudio no experimentalcon un enfoque descriptivo con una muestra de 302 universitarios entre16 y 25 años, siendo 51.3% varones y 48.7% mujeres utilizando el InternetAdicción Test (IAT) (1998) de Young adaptado al español y el ÍndiceMulticultural de Calidad de Vida (MQLI) (2000) de Mezzich, Cohen,Ruiperez, Banzato, y Zapata‐Vega, los dos instrumentos validados enColombia. Los resultados identificaron un 9.9% de los participantes conuso problemático de internet y un 49% con problemas frecuentes por eluso del mismo. El 49% de los estudiantes utiliza internet cinco horas omás al día. Se encontró una correlación negativa y altamentesignificativa entre el uso problemático del internet y la calidad devida (rho= -.371, p<.01), expresado en una correlación significativa ynegativa con la satisfacción con la integridad personal (rho= -.359,p<.01), la satisfacción con el funcionamiento productivo (rho= -.280,p<.01), la satisfacción social (rho= -.159, p<.01) y la satisfacción conel sentido de vida (rho= -.296, p<.01). Fue posible concluir que, alaumentar el uso problemático del internet en los universitarios,disminuirá el nivel de su calidad de vida.
Effects of cross-sectional shape on the bending strength in furniture joints
Authors: ACAR Mehmet , DİLER Harun , ERDİL Yusuf Ziya
Published: September 2018

Aim of the study: Tests were carried out to evaluate the ultimate bending strength of the circular and square cross sectioned furniture joint members and find out whether the form factor is applicable to the small specimens as they are applied to large specimens and compare the maximum bending strength and specific gravity values of these wood species to those that are specified in reference books.Material and methods: The specimens were prepared from Red oak (Quercus rubra), Yellow poplar (Liriodendron tulipifera), Southern pine (Pinus sp.), Caobilla (Carapa guianensis), and Gmelina (Gmelina arborea). Based on five wood species by five replications, 25 square cross sectional (25 x 25 mm) specimens and 25 specimens which included 19 mm diameter circular mortise and tenon joints, a total of 50 specimens were prepared and tested under the static bending test according to related standards.Main results: Results gave the primary indication that the form factor of 1.18 from square to circular cross section is applicable to small clear specimens; however, it should be noted that absolute conclusions require studies in much wider spectrum.Research highlights: The results of this study indicate that designers and furniture engineers may obtain good estimates from 1.18 form factor and comparison of MOR values and specific gravity of the wood species with the book values.
Flex-T™ HLA Class I ELISA Protocol v4
Authors: Miller Kelsey
Published: September 2018

The HLA class I ELISA is an enzyme immunoassay based on the detection of β2-microglobulin subunit of HLA class I complexes, after capturing the complex through the conjugated biotin. To this end, biotinylated HLA class I complex is first captured in streptavidin coated microtiter wells. Subsequently, HRP-conjugated anti-human β2-microglobulin is added to detect intact HLA class I complexes. Only intact HLA class I complexes are recognized. Peptides with high affinity binding will be clearly detected by this ELISA technique, while peptides with a moderate to low binding affinity for HLA class I provide a moderate to non-detectable signal. This protocol is designed to evaluate the efficiency of peptide exchange when using the Flex-T™ system.
Massive bleeding due to dissecting esophageal hematoma: A diagnostic dilemma
Authors: ÖLMEZ Şehmus , TAŞ Adnan , KARA Banu , SARITAŞ Bünyamin
Published: September 2018

The esophagus may be the origin of acute chest pain that is clinically indistinguishable from that caused due to other cardiothoracic emergencies. Dissecting esophageal hematoma is an extremely rare condition generally presenting with severe acute chest pain, and it might also cause vomiting, dysphagia, odynophagia, and hematemesis. Endoscopy is safe and can be used to confirm the diagnosis when a hematoma within the esophageal wall or later appearances of a longitudinal dissection are observed. Dissecting esophageal hematoma has an excellent prognosis, and it is usually treated conservatively after excluding esophageal perforation. We report a case of a 44-year-old male patient with Behçet’s disease who was taking colchicine, coumadin, and enoxaparin, and we initially suspected that this patient had pulmonary embolism or pulmonary artery aneurysm, but later, we found that he had dissecting esophageal hematoma. Furthermore, we observed that the laceration did not heal completely even 6 weeks after the conservative treatment.
Bitlis İlinde Acil Servise Üst Gastrointestinal Kanama İle Başvuran Hastaların Endoskopik ve Demografik Verilerinin Değerlendirilmesi
Authors: GÜVEN Ramazan , EYÜPOĞLU Gökhan , KUZU Ufuk Barış
Published: September 2018

Giriş ve Amaç: Üst gastrointestinal sistem
kanamaları acil servise başvuruların önemli bir nedeni olup, erken tanı ve tedavi
gerektirmektedir. Bu çalışmanın amacı Bitlis ilinde üst gastrointestinal sistem
kanaması tanısı alan hastaların özelliklerini değerlendirmektir. Gereç ve Yöntem: Ocak 2014-Aralık 2017 tarihleri
arasında Bitlis Devlet Hastanesi acil servisi kliniğine üst gastrointestinal
sistem kanaması nedeni ile başvuran hastaların verileri retrospektif olarak incelendi.
Bu hastaların klinik özellikleri ve kanamaya yol açabilecek etiyolojik nedenler
değerlendirildi. Bulgular: Çalışmaya toplam 54 hasta
alındı. Hastaların çoğunluğunu erkekler (%59.3) oluşturmaktaydı.  En sık başvuru şikayeti hematemezdi.
Hastaların %22.8’inde kanamaya predispozan olabilecek ilaç kullanımı mevcuttu.  Hastaların ortalama yatış süresi 5.6±3.6 gün
idi. Etiyolojik açıdan en sık neden duedonum ve mide ülseri olarak saptandı. Sonuç: Bitlis ilinde üst
gastrointestinal sistem kanaması olan hastaların genel özellikleri ülkemizde bu
konu ile ilgili yapılan diğer çalışmalar ile uyum göstermekteydi.
Resistência ao nematoide das galhas em progênies de coentro
Authors: Santos Ana Maria Maciel dos , Costa Kleyton Danilo da Silva , Oliveira Tâmara Rebecca Albuquerque , Silva José Wilson da , Souza Ênio Gomes Flôr , Carvalho Filho José Luiz Sandes de
Published: September 2018

O coentro possui grande importância socioeconômica para o Brasil, sendo bastante consumido como condimento e ocupa uma vasta área de cultivo, principalmente nas regiões Norte e Nordeste do país. Porém, a meloidoginose é uma das doenças que afetam a cultura, causando danos e prejuízos econômicos. Devido à escassez de pesquisas que identifiquem genótipos de coentro resistentes a nematoides, foi realizado o presente trabalho, visando avaliar o comportamento de uma população de coentro tolerante ao calor, quanto a resistência à Meloidogyne incognita raça 1. Foram avaliadas 46 progênies de meios-irmãos em delineamento de blocos ao acaso, com três repetições, sendo a parcela constituída por seis plantas. Após 15 dias da semeadura, foi realizada a inoculação de 1500 ovos do patógeno por planta e a colheita ocorreu 45 dias após a inoculação. As características avaliadas foram incidência de galhas, número de galhas no sistema radicular lavado e o número de ovos por planta. Com exceção do caráter incidência de galhas, todos os demais apresentaram diferença significativa pelo teste F, possibilitando a seleção de 31 progênies de acordo com a escala proposta por Oostenbrink. As correlações fenotípicas e genéticas do caráter número de galhas no sistema radicular foram significativas com número de ovos.
Qualidade de corpos hídricos no extremo Sul da Bahia
Authors: Matias Maria Iraildes de Almeida Silva , Santos João Victor da Silva , Freitas Rômulo Magno Oliveira , Matias Larissa Carolina Silva
Published: September 2018

A água é um recurso natural indispensável à vida, possui um enorme valor econômico, ambiental e social, fundamental à nossa sobrevivência e dos ecossistemas no nosso planeta. As águas superficiais devem atender a padrões de qualidade e potabilidade, sendo que suas características físicas, químicas e biológicas devem estar dentro dos padrões recomendados pela Organização Mundial da Saúde. O presente estudo objetivou avaliar as condições físico-químicas e biológicas da água de superfície de três corpos hídricos no Município de Teixeira de Freitas, Bahia. Foram avaliados os seguintes parâmetros: DBO (Demanda Bioquímica de Oxigênio), Fósforo total, Nitrogênio total, Oxigênio dissolvido, pH, Sólidos Totais, Turbidez e Coliformes Termotolerantes. A avaliação dos três corpos hídricos estudados indicou contaminação das suas águas por estarem em desacordo com os limites estabelecidos na Resolução CONAMA n° 357/05 para águas doces Classe 2, além do processo de eutrofização das águas do corpo hídrico 1.
Manejo dos sistemas agroflorestais em Tomé-Açu, Pará: Utilização dos resíduos de poda
Authors: Pompeu Gisele do Socorro Dos Santos , Kato Osvaldo Ryohei , Moura José Virgílio de Oliveira , Maciel Marinalva Cardoso
Published: September 2018

O uso da madeira da poda agroflorestal surge como uma forma de incentivo ao manejo das árvores nos sistemas agroflorestais (SAFs) e como fonte de matéria prima para artesãos, proporcionando maior visibilidade ao componente arbóreo. O objetivo com esse estudo é avaliar o uso da poda como estratégia de manejo dos SAFs e na confecção de artefatos em madeira. A pesquisa foi realizada em uma propriedade da Associação de Produtores e Produtoras da Agricultura Familiar do Município de Tomé-Açu, e com artesãos da Associação de Artesãos da Amazônia, de Belém, Pará. Coletaram-se dados sobre a poda do componente arbóreo e sobre a compreensão da sustentabilidade no uso da poda no manejo dos SAFs e na atividade de artesanato. Os dados foram analisados pela estatística descritiva. A poda agroflorestal gerou 2,3 m3 de resíduos que foram utilizados para cobertura morta e a confecção de artefatos, portanto, o uso da madeira de poda se estabelece como mais um produto dos SAFs familiares, incentiva o manejo das árvores, e cria um canal de comercialização entre agricultores e artesãos; como estratégia de manejo, a poda contribui para a sustentabilidade ambiental, econômica e sociocultural, entretanto, a sensibilização dos agricultores para esta prática depende do conhecimento sobre os benefícios relacionados à sustentabilidade dos sistemas.
Chlamydia Genomic MinD Protein Has not the Function of Regulating Plasmid-dependent Genes as Pgp5
Authors: Sun Yina , Kong Jie , Ma Jingyue , Qi Manli , Zhang Ying , Han Long , Liu Quanzhong , Liu Yuanjun
Published: September 2018

Chlamydia has a unique intracellular developmental cycle which has hindered the function study of Chlamydia. Transformation system of Chlamydia developed recently has greatly advanced the chlamydial function research and has been used to find chlamydial plasmid-encoded pgp5 can down-regulate plasmid-dependent genes. It is predicted that pgp5 has similar function with MinD protein encoded by chlamydial genome. However，it is unknown whether MinD has the function of regulating these plasmid-dependent genes. The pgp5 gene in the shuttle vector pGFP::CM was replaced with MinD gene of Chlamydia trachomatis (CT0582) or Chlamydia muridarum(TC0871). The recombinant plasmid was transformed into plasmid-free organisms-CMUT3.Real time PCR was used to detect the genes transcription level in these pgp5 replacement organisms. GlgA, one of the plasmid-regulated gene products was detected by the immunofluorescence assay. After recombination, transformation and plaque purification, the stable transformants CMUT3-pGFP::CM CT0582Rpgp5 and CMUT3-pGFP::CM TC0871Rpgp5 were generated. In these transformants, the plasmid-dependent genes were up-regulated, similar with those in the pgp5 premature stop mutant and pgp5 replacement with mCherry mutant. GlgA protein was also increased in all pgp5 mutants including CT0582Rpgp5 and TC0871Rpgp5. Thus, the transformation system has allowed us to identify the function of MinD that is useful for further understanding the chlamydiae.
Nursing at War: Catalyst for Change
Authors: BRUNK QUINCEALEA
Published: September 2018

From the first development of nursing research agendas, scholars have called for historical inquiries into nursing’s heritage and the influences that have affected the development of the profession. Because war leaves an indelible and distinct mark on the era in which it occurs, periods of significant development and change in nursing’s heritage can be linked to involvement in war. This review explores the published scholarship about American nurses in wartime, from the War for Independence through the Persian Gulf War and notes the most significant changes that have come as a result of this involvement. Although particular wars and wartime nursing is a popular topic for historical inquiry, there are still eras that need to be further explored for contributions to the profession of nursing as it is today.