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https://www.readbyqxmd.com/read/28525936/heavy-metal-and-arsenic-concentrations-in-rainbow-trout-oncorhynchus-mykiss-farmed-in-a-dam-reservoir-on-the-firat-euphrates-river-risk-based-consumption-advisories
#1
Memet Varol, Gülderen Kurt Kaya, Alper Alp
The concentrations of ten metals in rainbow trout (Oncorhynchus mykiss) farmed in the Karakaya Dam Reservoir (Turkey) on the Firat River were determined. The metal concentrations in rainbow trout did not exceed the maximum permissible levels. Biomagnification factors (BMF) of ten metals were <1, indicating that these metals were not biomagnified. The estimated daily intake (EDI) of each metal was much lower than the respective tolerable daily intake (TDI). The target hazard quotient (THQ) for individual metal and total THQ for combined metals were lower than 1, indicating no health risk for consumers due to the intake of either individual metal or combined metals...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28521996/antimicrobial-agent-free-hybrid-cationic-starch-sodium-alginate-polyelectrolyte-films-for-food-packaging-materials
#2
Ferhat Şen, İrem Uzunsoy, Emre Baştürk, Memet Vezir Kahraman
This study aimed to develop polyelectrolyte structured antimicrobial food packaging materials that do not contain any antimicrobial agents. Cationic starch was synthesized and characterized by FT-IR spectroscopy and (1)H NMR spectroscopy. Its nitrogen content was determined by Kjeldahl method. Polyelectrolyte structured antimicrobial food packaging materials were prepared using starch, cationic starch and sodium alginate. Antimicrobial activity of materials was defined by inhibition zone method (disc diffusion method)...
August 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28473848/memetic-differential-evolution-with-an-improved-contraction-criterion
#3
Lei Peng, Yanyun Zhang, Guangming Dai, Maocai Wang
Memetic algorithms with an appropriate trade-off between the exploration and exploitation can obtain very good results in continuous optimization. In this paper, we present an improved memetic differential evolution algorithm for solving global optimization problems. The proposed approach, called memetic DE (MDE), hybridizes differential evolution (DE) with a local search (LS) operator and periodic reinitialization to balance the exploration and exploitation. A new contraction criterion, which is based on the improved maximum distance in objective space, is proposed to decide when the local search starts...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28361692/active-module-identification-in-intracellular-networks-using-a-memetic-algorithm-with-a-new-binary-decoding-scheme
#4
Dong Li, Zhisong Pan, Guyu Hu, Zexuan Zhu, Shan He
BACKGROUND: Active modules are connected regions in biological network which show significant changes in expression over particular conditions. The identification of such modules is important since it may reveal the regulatory and signaling mechanisms that associate with a given cellular response. RESULTS: In this paper, we propose a novel active module identification algorithm based on a memetic algorithm. We propose a novel encoding/decoding scheme to ensure the connectedness of the identified active modules...
March 14, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28181592/facing-the-phase-problem-in-coherent-diffractive-imaging-via-memetic-algorithms
#5
Alessandro Colombo, Davide Emilio Galli, Liberato De Caro, Francesco Scattarella, Elvio Carlino
Coherent Diffractive Imaging is a lensless technique that allows imaging of matter at a spatial resolution not limited by lens aberrations. This technique exploits the measured diffraction pattern of a coherent beam scattered by periodic and non-periodic objects to retrieve spatial information. The diffracted intensity, for weak-scattering objects, is proportional to the modulus of the Fourier Transform of the object scattering function. Any phase information, needed to retrieve its scattering function, has to be retrieved by means of suitable algorithms...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28141540/a-heuristic-initialized-stochastic-memetic-algorithm-for-mdpvrp-with-interdependent-depot-operations
#6
Abdus Salam Azad, Md Monirul Islam, Saikat Chakraborty
The vehicle routing problem (VRP) is a widely studied combinatorial optimization problem. We introduce a variant of the multidepot and periodic VRP (MDPVRP) and propose a heuristic initialized stochastic memetic algorithm to solve it. The main challenge in designing such an algorithm for a large combinatorial optimization problem is to avoid premature convergence by maintaining a balance between exploration and exploitation of the search space. We employ intelligent initialization and stochastic learning to address this challenge...
January 27, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28115624/the-g-patch-protein-nf-%C3%AE%C2%BAb-repressing-factor-mediates-the-recruitment-of-the-exonuclease-xrn2-and-activation-of-the-rna-helicase-dhx15-in-human-ribosome-biogenesis
#7
Indira Memet, Carmen Doebele, Katherine E Sloan, Markus T Bohnsack
In eukaryotes, the synthesis of ribosomal subunits, which involves the maturation of the ribosomal (r)RNAs and assembly of ribosomal proteins, requires the co-ordinated action of a plethora of ribosome biogenesis factors. Many of these cofactors remain to be characterized in human cells. Here, we demonstrate that the human G-patch protein NF-κB-repressing factor (NKRF) forms a pre-ribosomal subcomplex with the DEAH-box RNA helicase DHX15 and the 5΄-3΄ exonuclease XRN2. Using UV crosslinking and analysis of cDNA (CRAC), we reveal that NKRF binds to the transcribed spacer regions of the pre-rRNA transcript...
May 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28040129/efficacies-of-vitamin-d-and-omega-3-polyunsaturated-fatty-acids-on-experimental-endometriosis
#8
Alpaslan Akyol, Memet Şimşek, Raşit İlhan, Behzat Can, Melike Baspinar, Hadice Akyol, H Fatih Gül, Ferit Gürsu, Burçin Kavak, Mustafa Akın
OBJECTIVE: The aim of this study was to investigate the effects of 1,25-dihydroxyvitamin-D3 (vitamin D) and omega-3 polyunsaturated fatty acids (omega-3 PUFA) on experimentally induced endometriosis in a rat model. MATERIALS AND METHODS: A prospective, single-blind, randomized, controlled experimental study was performed on 30 Wistar female rats. Endometriosis was surgically induced by implanting endometrial tissue on the abdominal peritoneum. Four weeks later, a second laparotomy was performed to assess pre-treatment implant volumes and cytokine levels...
December 2016: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28029627/a-memetic-algorithm-for-3-d-protein-structure-prediction-problem
#9
Leonardo Correa, Bruno Borguesan, Camilo Farfan, Mario Inostroza-Ponta, Marcio Dorn
Memetic Algorithms are population-based metaheuristics intrinsically concerned with exploiting all available knowledge about the problem under study. The incorporation of problem domain knowledge is not an optional mechanism, but a fundamental feature of the Memetic Algorithms. In this paper, we present a Memetic Algorithm to tackle the three-dimensional protein structure prediction problem. The method uses a structured population and incorporates a Simulated Annealing algorithm as a local search strategy, as well as ad-hoc crossover and mutation operators to deal with the problem...
December 2, 2016: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28004087/design-synthesis-in-vitro-antiproliferative-activity-binding-modeling-of-1-2-4-triazoles-as-new-anti-breast-cancer-agents
#10
Murat Genc, Zuhal Karagoz Genc, Suat Tekin, Suleyman Sandal, Muhammad Sirajuddin, Ben Hadda Taibi, Memet Sekerci
This article demonstrates the synthesis of 1,2,4-triazole derivatives and their applications in medicine particularly as anti-breast cancer agents which is a major issue of the present. The synthesized compounds were characterized by elemental analysis, FT-IR and NMR. DFT was used to study the quantum chemical calculations of geometries and vibrational wave numbers of 3-hydroxynaphthyl and p-tolyl substituted 1,2,4-triazoles in the ground state. The scaled harmonic vibrational frequencies obtained from the DFT method were compared with those of the FT-IR spectra and found good agreement...
December 2016: Acta Chimica Slovenica
https://www.readbyqxmd.com/read/27995040/memetic-computing-through-bio-inspired-heuristics-integration-with-sequential-quadratic-programming-for-nonlinear-systems-arising-in-different-physical-models
#11
Muhammad Asif Zahoor Raja, Adiqa Kausar Kiani, Azam Shehzad, Aneela Zameer
BACKGROUND: In this study, bio-inspired computing is exploited for solving system of nonlinear equations using variants of genetic algorithms (GAs) as a tool for global search method hybrid with sequential quadratic programming (SQP) for efficient local search. The fitness function is constructed by defining the error function for systems of nonlinear equations in mean square sense. The design parameters of mathematical models are trained by exploiting the competency of GAs and refinement are carried out by viable SQP algorithm...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27934964/mitigate-cascading-failures-on-networks-using-a-memetic-algorithm
#12
Xianglong Tang, Jing Liu, Xingxing Hao
Research concerning cascading failures in complex networks has become a hot topic. However, most of the existing studies have focused on modelling the cascading phenomenon on networks and analysing network robustness from a theoretical point of view, which considers only the damage incurred by the failure of one or several nodes. However, such a theoretical approach may not be useful in practical situation. Thus, we first design a much more practical measure to evaluate the robustness of networks against cascading failures, termed Rcf...
December 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27932252/changes-in-primary-care-provision-in-turkey-a-comparison-of-1993-and-2012
#13
Mehmet Akman, Sibel Sakarya, Mehmet Sargın, İlhami Ünlüoğlu, Memet Taşkın Eğici, Wienke G W Boerma, Willemijn L A Schäfer
Since the early 1990s, the primary care system in Turkey has undergone fundamental changes. In the first decade of the millennium family doctor scheme was introduced to the Turkish primary care sector and the name of the primary care doctors (PCDs) changed from "general practitioner" (GP) to "family doctor" (FD). This study aims to give an insight into those changes and to compare the service profiles of PCDs in 1993 and 2012. Data, based on cross sectional surveys among Turkish doctors working in primary care are derived from the 1993 European GP Task Profile study (n=199) and the 2012 Quality and Costs of Primary Care in Europe (QUALICOPC) study (n=299)...
February 2017: Health Policy
https://www.readbyqxmd.com/read/27925594/a-memetic-algorithm-for-3-d-protein-structure-prediction-problem
#14
Leonardo Correa, Bruno Borguesan, Camilo Farfan, Mario Inostroza-Ponta, Marcio Dorn
Memetic Algorithms are population-based metaheuristics intrinsically concerned with exploiting all available knowledge about the problem under study. The incorporation of problem domain knowledge is not an optional mechanism, but a fundamental feature of the Memetic Algorithms. In this paper, we present a Memetic Algorithm to tackle the three-dimensional protein structure prediction problem. The method uses a structured population and incorporates a Simulated Annealing algorithm as a local search strategy, as well as ad-hoc crossover and mutation operators to deal with the problem...
December 2, 2016: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/27904271/histologic-evidence-of-new-collagen-formulation-using-platelet-rich-plasma-in-skin-rejuvenation-a-prospective-controlled-clinical-study
#15
Ozlem Karabudak Abuaf, Hamza Yildiz, Hüseyin Baloglu, Memet Ersan Bilgili, Hasan Aktug Simsek, Bilal Dogan
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma and has recently been shown to accelerate rejuvenate aging skin by various growth factors and cell adhesion molecules. OBJECTIVE: This study was conducted to evaluate the efficacy and safety of intradermal injection of PRP in the human facial rejuvenation. METHODS: This study was a prospective, single-center, single-dose, open-label, non-randomized controlled clinical study...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27896261/giant-invasive-mole-presenting-as-a-cause-of-abdominopelvic-mass-in-a-perimenopausal-woman-an-unusual-presentation-of-a-rare-pathology
#16
Alpaslan Akyol, Memet Şimşek, Özlem Üçer
Invasive mole is a benign gestational trophoblastic disease that arises from the myometrial invasion of any gestational event via direct extension through tissue or vascular structures. Invasive mole (and other gestational trophoblastic diseases) may present with life-threatening complications including uterine perforation, excessive bleeding, acute hemoperitoneum, and abdominal pain. We report a case of invasive mole presenting as abdominal distention in a 51-year-old perimenopausal woman (gravida 12, para 12, abortion 0)...
November 2016: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/27819480/an-enhanced-memetic-algorithm-for-single-objective-bilevel-optimization-problems
#17
Md Monjurul Islam, Hemant Kumar Singh, Tapabrata Ray, Ankur Sinha
Bilevel optimization, as the name reflects, deals with optimization at two interconnected hierarchical levels. The aim is to identify the optimum of an upper-level leader problem, subject to the optimality of a lower-level follower problem. Several problems from the domain of engineering, logistics, economics, and transportation have an inherent nested structure which requires them to be modeled as bilevel optimization problems. Increasing size and complexity of such problems has prompted active theoretical and practical interest in the design of efficient algorithms for bilevel optimization...
November 7, 2016: Evolutionary Computation
https://www.readbyqxmd.com/read/27607117/preventing-suture-extrusion-and-recurrence-in-mustarde-and-furnas-otoplasties-by-using-laterally-based-postauricular-dermal-flap-long-term-results
#18
Salih Onur Basat, Fatih Ceran, Ufuk Askeroglu, Tolga Aksan, Cagdas Orman, Memet Yazar, Ilker Uscetin, Mithat Akan, Mehmet Bozkurt
BACKGROUND: Prominent ear deformity (PD) is an unacceptable condition of pinna that affects 5% of the population and is associated with emotional stress, behavioral disturbances, and social restrictions in relationships. Conchal hypertrphy, inadequate formation of antihelical fold, earlobe placement ahead than it should be, or various combinations of these changes are main characteristics of PD. Many surgical techniques have been described for the PD.The authors' aim was to present laterally based postauricular dermal flap combination with cartilage-sparing methods and effectiveness of this technique in suture extrusion prevention and reducing the rate of recurrence with long-term results...
September 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27571416/a-novel-clustering-methodology-based-on-modularity-optimisation-for-detecting-authorship-affinities-in-shakespearean-era-plays
#19
Leila M Naeni, Hugh Craig, Regina Berretta, Pablo Moscato
In this study we propose a novel, unsupervised clustering methodology for analyzing large datasets. This new, efficient methodology converts the general clustering problem into the community detection problem in graph by using the Jensen-Shannon distance, a dissimilarity measure originating in Information Theory. Moreover, we use graph theoretic concepts for the generation and analysis of proximity graphs. Our methodology is based on a newly proposed memetic algorithm (iMA-Net) for discovering clusters of data elements by maximizing the modularity function in proximity graphs of literary works...
2016: PloS One
https://www.readbyqxmd.com/read/27424999/calf-restoration-with-asymmetric-fat-injection-in-polio-sequelae
#20
Memet Yazar, Sevgi Kurt Yazar, Erol Kozanoğlu
BACKGROUND: Many things cause leg asymmetry and sequelae seen after poliomyelitis infections are still a cause of leg deformities. In this study, lipofilling and liposuction combinations are performed on patients with poliomyelitis sequelae. Volume deficiency is not the only leg problem with polio sequelae, leg length is also a problem. For this reason, the length deficiency must be addressed in order to achieve the desired symmetry. The aim of this study is correcting limb asymmetry by a method addressing both limb length deficiency by heel raise and volume deficiency by injection of fat based on corrected limb length...
September 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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