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Trace Metal Levels in Lichen Samples From Roadsides in East Black Sea Region,Turkey

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Biomedical and Environmental Sciences 2007年第3期20卷 203-207页

作者： OZGUR DOGAN ULUOZLU KADIR KINALIOGLU mustafa TUZEN mustafa SOYLAK Gaziosmanpasa University Faculty of Science and Arts Chemistry Department60250 TokatTurkey Giresun University Faculty of Science and Arts Department of Biology Giresun Turkey Erciyes University Faculty of Science and Arts Chemistry Department 38039 Kayseri Turkey

Objective To determine the metal contents of lichen species from East Black Sea region of Turkey for investigation of trace metal pollution sourced traffic. Methods The levels of copper, cadmium, lead, zinc, manganese, iron, chromium, nickel, cobalt, palladium in lichen samples collected from East Black Sea region of Turkey were determined by flame and graphite furnace atomic absorption spectrometry after microwave digestion method. The accuracy of the method was corrected by standard reference material （NIST SRM IAEA-336 Lichen）. Results The contents of invest!gated trace metals in lichen samples were 7.19-22.4 μg/g for copper, 0.10-0.64 μg/g for cadmium, 4.03-44.6 μg/g for lead, 14.5-41.8 μg/g for zinc, 25.8-208 μg/g for manganese, 331-436 μg/g for iron, 1.20-3.01 μg/g for chromium, 1.48-3.90 μg/g for nickel, 0.20-3.55 μg/g for cobalt, 0.11-0.64 μg/g for palladium. The results were compared with the literature values. Conclusion Some lichen species such as Xanthoparmelia conspersa, Xanthoria calcicola, Peltigera membranacea, and Physcia adscendens are accumulated trace metals at a high ratio.

关键词： Trace metals Lichen Atomic absorption spectrometry East Black Sea region-Turkey

Link between irritable bowel syndrome,depression,and colorectal cancer risk in young patients:Age-matched nationwide populationbased study

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World Journal of Gastrointestinal Pathophysiology 2024年第3期15卷 1-8页

作者： Sai Priyanka Mellacheruvu Sai Prasanna Lekkala Sukhjinder Chauhan Adil Sarvar Mohammed Sravya R Mundla Ankita Shenoy Bilal Khan Mohammed Jerrin Bawa Shantha Nallapothula Priyatham Gurram Akhil Jain Rupak Desai Mohammed mustafa Nayeem Department of Public Health University of MassachusettsLowellMA 01854United States Department of Internal Medicine Mamata Medical CollegeTelanganaKhammam 507002India Department of Internal Medicine Mountainview HospitalLas VegasNV 89128United States Department of Internal Medicine Central Michigan University College of MedicineSaginawMI 48602United States Department of Public Health Apollo Institute of Medical Sciences and ResearchTelanganaHyderabad 500090India Department of Medicine Dr D.Y.Patil University School of MedicineMaharashtraNavi Mumbai 400706India Department of Medicine Northwestern University Feinberg School of MedicineChicagoIL 60611United States Department of Internal Medicine Flushing Hospital Medical CenterQueensNY 11355United States Department of Internal Medicine PES Institute of Medical Sciences and ResearchAndhra PradeshKuppam 517425India Department of Gastroenterology Mayo ClinicScottsdaleAZ 85259United States Division of Leukemia The University of Texas MD Anderson Cancer CenterHoustonTX 77079United States Independent Researcher AtlantaGA 30079United States Department of Internal Medicine Parkview Medical CenterPuebloCO 81003United States

BACKGROUND There exists a link between irritable bowel syndrome(IBS)and ***,chronic depression is known to increase the risk of cancer in *** this population-based analysis,we investigated the prevalence and the odds of colorectal cancer(CRC)in young-depressed patients with *** To investigate the relationship between IBS and CRC in young,depressed patients using a nationally representative United States inpatient *** The 2019 National Inpatient Sample was used to identify young(18-44 years)patients admitted with comorbid depression in the presence vs absence of IBS using relevant International Classification of Diseases,Tenth Revision,Clinical Modification *** endpoint was the prevalence and odds of CRC in age matched(1:1)youngdepressed cohort hospitalized with IBS(IBS+)vs without IBS(IBS-).Multivariable regression analysis was performed adjusting for potential *** Age-matched(1:1)young-depressed IBS+(83.9%females,median age 36 years)and IBS-(65.8%females,median age 36 years)cohorts consisted of 14370 patients in each ***+cohort had higher rates of hypertension,uncomplicated diabetes,hyperlipidemia,obesity,peripheral vascular disease,chronic obstructive pulmonary disease,hypothyroidism,prior stroke,prior venous thromboembolism,anxiety,bipolar disorder,and borderline personality disorder(P<0.005)vs the ***,prior myocardial infarction,acquired immunodeficiency syndrome,dementia,smoking,alcohol abuse,and drug abuse(P<0.005)are high in *** rate of CRC was comparable in both cohorts[IBS+n=25(0.17%)vs IBS-n=35(0.24%)].Compared to the IBS-cohort,the odds ratio(OR)of developing CRC was not significantly higher[OR 0.71,95% confidence interval(CI)0.23-2.25]in IBS+***,adjusting for baseline sociodemographic and hospital characteristics and relevant comorbidities,the OR was found to be non-significant(OR 0.89,95%CI 0.21-3.83).CONCLUSION This nationwide propensity-matched ana

关键词： Colorectal cancer Depression Irritable bowel syndrome Young patients National inpatient sample Comorbidities

Phase diagrams in mixed spin-3/2 and spin-2 Ising system with two alternative layers within the effective-field theory

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Chinese Physics B 2011年第6期20卷 112-124页

作者： Bayram Deviren Yasin Polat mustafa Keskin Department of Physics Nevsehir University Institute of Science Erciyes University Department of Physics Erciyes University

The phase diagrams in the mixed spin-3/2 and spin-2 Ising system with two alternative layers on a honeycomb lattice are investigated and discussed by the use of the effective-field theory with correlations. The interaction of the nearest-neighbour spins of each layer is taken to be positive （ferromagnetic interaction） and the interaction of the adjacent spins of the nearest-neighbour layers is considered to be either positive or negative （ferromagnetic or antiferromagnetic interaction）. The temperature dependence of the layer magnetizations of the system is examined to characterize the nature （continuous or discontinuous） of the phase transitions and obtain the phase transition temperatures. The system exhibits both second- and first-order phase transitions besides triple point （TP）, critical end point （E）, multicritical point （A）, isolated critical point （C） and reentrant behaviour depending on the interaction parameters. We have also studied the temperature dependence of the total magnetization to find the compensation points, as well as to determine the type of behaviour, and N-type behaviour in Neel classification nomenclature existing in the system. The phase diagrams are constructed in eight different planes and it is found that the system also presents the compensation phenomena depending on the sign of the bilinear exchange interactions.

关键词： mixed spin-3/2 and spin-2 Ising system effective-field theory compensation phenomena phase diagrams

Direct synthesis of La-Mg-Ni-Co type hydrogen storage alloys from oxide mixtures

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Journal of Energy Chemistry 2017年第4期26卷 719-723页

作者： Alanur Binal Aybar mustafa Anik Department of Metallurgical and Materials Engineering Eskisehir Osmangazi University26480 EskisehirTurkey

(La;Mg;);(Ni;Co;);（x = 0.125, 0.25, 0.5） alloys were synthesized from the sintered mixture of La;O;+ Ni O + Co O + Mg O in the molten CaCl;electrolyte at 750 °C and the electrochemical hydrogen storage capacities of the synthesized alloys were measured. Non-hygroscopic LaNiO;phase formed during sintering（at 1200 °C for 2 h） as a result of the reaction of hygroscopic La;O;with NiO. Another sinter product was Mg;Ni;O phase. Both mixed oxide sinter products facilitated the La-Ni and Mg-Ni phase formations. X-ray diffraction peaks indicated that the first stable phase appeared in the alloy structure was LaNi;which formed upon reduction of La;NiO;phase. Increase in Mg content caused formation of La;Mg;Ni;phase in the alloy structure and the presence of this phase improved the hydrogen storage performance of the electrodes. It was observed that(La;Mg;);(Ni;Co;);（x = 0.125, 0.25, 0.5） alloys have promising discharge capacities change between 319 m Ah/g and 379 m Ah/g depending on the alloy Mg content.

关键词： La-Ni alloys Electro-deoxidation Hydrogen storage X-ray diffraction

Multi-period mine planning with multi-process routes

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International Journal of Mining Science and Technology 2013年第3期23卷 317-321页

作者： mustafa Kumral McGill University Department of Mining and Materials Engineering 3450 University Street Montreal Quebec Canada H3A 2A7

This paper attempts to optimize optimal capacities, block routing and mine sequencing problems in a mining system. The solution approach is based on a heuristics and the mixed integer programming (MIP). Unlike previous sequential solution approaches, the problems are herein solved at the same time. Furthermore, the proposed approach guarantees practical solutions because it considers ore material distribution within orebody. The paper has two main contributions: (a) the proposed approach generates production rates in a manner that the capacities are satisfied; (b) the proposed approach does not use pre-defined marginal cut-off grades. Thus, idle capacity problem is eliminated and different scheduling combinations are allowed. To see the performance of the approach proposed, a case study is carried out using a gold data. The schedule generated shows that the approach can determine optimal production rates, block destination and sequencing effectively.

关键词： Mine planning Multi-route Sequencing Production rates Heuristics Mixed integer programming

Microgrid Energy Management: Classification, Review and Challenges

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1425-1438页

作者： Lejla Ahmethodzic mustafa Music Senad Huseinbegovic the Faculty of electrical engineering University of SarajevoBiHBosnia and Herzegovina. Public Electric Utility Elektroprivreda SarajevoBiHand Faculty of electrical engineeringUniversity of SarajevoBosnia and Herzegovina

Microgrids provide a way to introduce ecologically acceptable energy production to the power *** main chal-lenges with microgrids are overall control,as well as maintaining safe,reliable and economical *** explore implementing these possibilities,but in rapidly expanding areas of research there is always a need to review what has been done so far and give guidelines to new researchers on topics in need of more *** paper offers an extensive literature review of the energy management part of the microgrid control *** on extensive literature research,the authors of this article offer their view on energy management system *** through centralized and decentralized structure is *** most popular research topic is the optimization of energy *** paper offers a new perspective on the classification of optimization methods used for microgrid energy management,listing and sorting many problem related *** microgrid is not an assembly of independent elements but rather a coordinated system of intertwined *** elements of microgrid functioning,like energy storage systems,demand side *** vehicles are also explored in this paper,giving the current state of their research through *** Terms-Demand side management,electric vehicles,energy management system,energy storage systems,microgrid,operation and control.

关键词： Demand side management electric vehicles energy management system energy storage systems microgrid operation and control.

Skin lesion classification system using a Knearest neighbor algorithm

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Visual Computing for Industry,Biomedicine,and Art 2022年第1期5卷 78-87页

作者： mustafa Qays Hatem Renewable Energy Department Technical Institute of BaqubahMiddle Technical UniversityDyala 32001Iraq

One of the most critical steps in medical health is the proper diagnosis of the *** is one of the most volatile and challenging fields in terms of *** often require further testing,review of the patient’s history,and other data to ensure a proper ***,finding a method that can guarantee a proper trusted diagnosis quickly is *** approaches have been developed over the years to facilitate the diagnosis based on machine ***,the developed systems lack certain properties,such as high *** study proposes a system developed in MATLAB that can identify skin lesions and classify them as normal or *** classification process is effectuated by implementing the K-nearest neighbor(KNN)approach to differentiate between normal skin and malignant skin lesions that imply *** is used because it is time efficient and promises highly accurate *** accuracy of the system reached 98%in classifying skin lesions.

关键词： Machine learning Skin disease K-nearest neighbor Skin detection MATLAB Graphical user interface

Thermal comfort in classrooms considering a traditional wind tower in Trabzon through simulation

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Building Simulation 2022年第3期15卷 401-418页

作者： Rova Rabeharivelo mustafa Kavraz Cemalettin Aygün Department of Architecture Karadeniz Technical UniversityTrabzonTurkey Department of Technical Engineering Karadeniz Technical UniversityTrabzonTurkey

The spaces must be designed in accordance with certain design principles for people to feel *** accordance with that,building ventilation is particularly important during hot periods to ensure thermal *** this study,the effect of ventilation realized using a wind tower on the thermal quality of a classroom was *** the study,two popular models(unidirectional and multidirectional wind tower)were studied,and the model that provided more ergonomic ventilation to sitting users based on climate conditions of the province of Trabzon(Turkey)during the month of August was *** more efficient model was studied *** dimensional changes in width,height,and shelf height were applied to it to find a model that provided more comfort for the used thermal *** models were modelled and simulated using ANSYS *** distributions were generated to ease the interpretation of the *** the calculated average wind speeds in different regions in the classroom,the thermal sensation in the space was ***,the thermal perception of users of the retained model was evaluated by entering thermal comfort parameter values calculated for the relevant region into the CBE thermal comfort tool available *** change in the dimensional features of the wind tower had an impact on wind tower *** provided by wind towers under the thermal conditions of Trabzon in August often caused thermal discomfort.

关键词： wind tower natural ventilation thermal comfort classroom Trabzon

Organization：A new focus on mine safety improvement in a complex operational and business environment

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International Journal of Mining Science and Technology 2017年第4期27卷 617-625页

作者： Komljenovic Dragan Loiselle Georges Kumral mustafa Institut de Recherche d'Hydro-Quebec (IREQ) 1800 boul. Lionel-Boulet Varennes J3X 1S1 Canada Hydro-Quebec Trans Energie 5250 Armand-Frappier St-Hubert J3Z 1G3 Canada Department of Mining and Materials Engineering McGill University Montreal H3A OE8 Canada

The daily operations in the mining industry are still a significant source of risk with regard to occupational safety and health(OS & H). Various research studies and statistical data world-wide show that the number of serious injuries and fatalities still remains high despite substantial efforts the industry has put in recent years in decreasing those numbers. This paper argues that the next level of safety performance will have to consider a transition from coping solely with workplace dangers, to a more systemic model taking organizational risks in consideration. In this aspect, lessons learned from the nuclear industry may be useful, as organizational learning processes are believed to be more universal than the technologies in which they are used. With the notable exception of major accidents, organizational performance has not received all the attention it deserves. A key element for reaching the next level of performance is to include organizational factors in low level events analyses, and approach the management as a risk control system. These factors will then appear not only in the event analysis,but in supervision activities, audits, change management and the like. Many recent event analyses across various industries have shown that organizational factors play a key role in creating conditions for triggering major accidents(aviation, railway transportation, nuclear industry, oil exploitation, mining, etc.).In this paper, a perspective that may be used in supervisory activities, self-assessments and minor events investigations, is presented. When ingrained in an organizational culture, such perspective has the highest potential for continuous safety improvement.

关键词： Occupational safety and health Safety culture Organizational performance Risk analysis and management