keyword
MENU ▼
Read by QxMD icon Read
search

memetics

keyword
https://www.readbyqxmd.com/read/28929460/trace-metal-levels-in-rainbow-trout-oncorhynchus-mykiss-cultured-in-net-cages-in-a-reservoir-and-evaluation-of-human-health-risks-from-consumption
#1
Memet Varol, Gülderen Kurt Kaya, Sumru Anık Alp, Muhammet Raşit Sünbül
Although fish consumption has positive health effects, metals accumulated in fish can cause human health risks. In this study, the levels of ten metals in rainbow trout (Oncorhynchus mykiss) farmed in the Keban Dam Reservoir, which has the biggest rainbow trout production capacity in Turkey, were determined and compared with the maximum permissible levels (MPLs). Also, human health risks associated with rainbow trout consumption were assessed. The metal concentrations in rainbow trout were found below the MPLs...
September 19, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28829325/a-novel-integer-coded-memetic-algorithm-for-the-set-k-cover-problem-in-wireless-sensor-networks
#2
Chien-Chih Liao, Chuan-Kang Ting
The Set k-Cover problem aims to partition a set of nodes for the maximal number of covers. This problem is crucial for extending the lifetime of wireless sensor networks (WSNs) under the constraint of covering all targets. More specifically, the Set k-Cover problem enables partitioning the set of sensors into several covers over all targets and activating the covers by turns to effectively extend the WSN lifetime. To resolve this problem, we propose a novel memetic algorithm (MA) based on integer-coded genetic algorithm and local search...
August 21, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28828571/comparison-of-heavy-metal-levels-of-farmed-and-escaped-farmed-rainbow-trout-and-health-risk-assessment-associated-with-their-consumption
#3
Memet Varol, Muhammet Raşit Sünbül
In this study, levels of ten metals (arsenic, cadmium, cobalt, chromium, copper, iron, manganese, nickel, lead, and zinc) in muscles of farmed and escaped farmed rainbow trout (Oncorhynchus mykiss) in the Keban Dam Reservoir (Turkey) were determined. Also, human health risks associated with their consumption were assessed. Of ten metals, only Co and Fe levels in escaped rainbow trout were significantly higher than those in farmed rainbow trout. The metal levels in farmed and escaped rainbow trout were below the maximum permissible limits...
August 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28762039/hypothalamic-hamartoma-presenting-with-infantile-spasms
#4
Uğur Işık, Sema Saltık, Bahattin Tanrıkulu, M Memet Özek
BACKGROUND: Hypothalamic hamartomas (HH) generally present with gelastic seizures. It is very unusual for a pediatric patient with HH to present with infantile spasms (IS). CASE PRESENTATION: Here we present a 6-month-old boy diagnosed with IS whose brain magnetic resonance imaging (MRI) showed an 18 × 18 × 16 mm mass in the hypothalamus. His seizures did not respond to antiepileptic treatment with vigabatrin and valproic acid. He had disconnective surgery for HH...
July 31, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28667912/organochlorine-pesticide-antibiotic-and-heavy-metal-residues-in-mussel-crayfish-and-fish-species-from-a-reservoir-on-the-euphrates-river-turkey
#5
Memet Varol, Muhammet Raşit Sünbül
This study investigated the residues of 19 organochlorine pesticides, 37 antibiotics and 5 heavy metals in biota samples (one mussel species, one crayfish species, six wild fish species and one farmed fish species) from the Keban Dam Reservoir on the Euphrates River, Turkey. Among monitored OCPs, only p,p'-DDE was detected in biota samples. It was found only in mussel, fish muscle and fish gill samples. The highest concentration of p,p'-DDE (0.032 mg/kg ww) was determined in the gill of common carp, which was found to be below the maximum residue limit (MRL)...
November 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28598712/autotaxin-expression-in-hepatocellular-carcinoma
#6
Ilker Memet, Evanthia Tsalkidou, Alexandra K Tsaroucha, Maria Lambropoulou, Ekaterini Chatzaki, Gregory Trypsianis, Dimitrios Schizas, Michael Pitiakoudis, Constantinos Simopoulos
BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most common malignant tumors. Despite the important progress observed in liver surgery, the survival rates are discouraging. The aim of this study was to investigate the expression of autotaxin in hepatocellular carcinoma. MATERIALS AND METHODS: Liver tissues from 28 human hepatocellular carcinomas were evaluated for the expression of autotaxin by immunohistochemistry. The gender, age, histological grade, lymphovascular invasion, number of tumors, levels of serum alpha-fetoprotein (aFP), presence of liver cirrhosis, hepatitis, surgery and survival rates were recorded...
June 9, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28595251/use-of-turn-in-skin-flaps-for-nasal-lining-reconstruction
#7
Memet Yazar, Sevgi Kurt Yazar, Erol Kozanoğlu, Murat Diyarbakırlıoğlu, Hikmet İhsan Eren
BACKGROUND: Reconstruction of the nasal lining is the most difficult part of complex nasal reconstruction because the mucosa has a unique texture and fineness. Many techniques, ranging from skin grafts to local flaps, have been applied for the reconstruction of the mucosa. In some cases, even free flaps have been used. OBJECTIVE: The aim of this study was to discuss the feasibility of using turn-in flaps in nasal reconstruction. MATERIALS AND METHODS: Seventeen patients with full-thickness nasal defects underwent reconstruction with turn-in flaps...
June 6, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
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
#8
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...
December 1, 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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
COMPARATIVE STUDY
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
keyword
keyword
94265
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"