Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Baltaci, Cemalettin(27)
- Uzun, Sevda(27)
- Yildiz, Salih(25)
- Kulakaç, Nurşen(24)
- Ayaydin, Hasan(22)
- Yilmaz, Ozgur(20)
- Bostan, Sedat(19)
- Doğan, Kadir Caner(19)
- Kenek, Gökhan(19)
- Tosunoğlu, Büşra(19)
- Akyol, Hikmet(18)
- Akyürek, Suat(18)
- Can, İbrahim(18)
- Doğru, Bülent(18)
- Hayaloğlu, Pınar(18)
- Keyifli, Nazlı(18)
- Peker, İskender(18)
- Sipahi, Ferkan(18)
- Çalışır, Gülsüm(18)
- Avcı, İbrahim(17)
- Gücer, Mehmet Ali(17)
- Pala, Fahrettin(17)
- Türkkan, Tuğba(17)
- Ulutaşdemir, Nilgün(17)
- Yildiz, Emel(17)
- Akyüz, Ahmet Mutlu(16)
- Cengiz, Ekrem(16)
- Demirağ, Hatice(16)
- Hintistan, Sevilay(16)
- Yeşilçayır, Celal(16)
- Akaryali, Enver(15)
- Kaygusuz, Abdullah(15)
- Merdan, Mehmet(15)
- Bayrakdaroğlu, Serdar(14)
- Demirbağ, Orkun(14)
- Evren, Savaş(14)
- Kahraman, Yakup(14)
- Yesilelebi, Gl(14)
- Yıldız, Barış(14)
- Ödemiş, Murat(14)
Yayınlar
- MakaleAçık Erişim2019Phytochemical Analysis of Dorycnium pentaphyllum and Its Antiproliferative Effect on Cervix Cancer Cells
Aliyazicioglu, Yuksel; Demir, Selim; Yaman, Scrap Ozer; Sener, Sila Ozlem; Demir, Elif Ayazoglu; Aliyazicioglu, Rezzan; Turan, Ibrahim
The purpose of this study was to investigate the phytochemical analysis of D. pentaphyllum and its cytotoxic activity on human cervical cancer (HeLa) cells with possible mechanisms. Total phenolic contents (TPC) and phytochemical analysis of the extract were evaluated using spectrophotometric method and RP-HPLC, respectively. The cytotoxic effect of the extract was evaluated using the MTT assay. The mechanism of the cytotoxic effect of the extract was also evaluated in terms of apoptosis, cell cycle, and mitochondrial membrane potential (MMP) using the fluorometric methods. The TPC of the extract was calculated as 68.9 +/- 2.3 mg gallic acid equivalent per g sample and quercetin was determined as the major phenolic in the extract. The extract showed a selective cytotoxic effect (6.5-fold) on HeLa cells compared to normal fibroblast cells. The cytotoxic effect of the extract was found to be due to the arresting of the cell cycle in the S phase and increasing apoptosis through decreased MMP. Further studies are needed for the comprehensive effects of the extract on cell signaling.
AtıfWoS11OpenAlex11TR Dizin7
İncele - MakaleAçık Erişim2019Antioxidant Properties of Primula vulgaris Flower Extract and Its Cytotoxic Effect on Human Cancer Cell Lines
Demir, Selim; Turan, Ibrahim; Aliyazicioglu, Yuksel
Primula vulgaris is a plant belonging to Primula genus, and these species are often used in traditional therapy. Although there are numerous studies on the antioxidant and cytotoxic effects of different Primula species, there are limited studies of these properties of P. vulgaris extracts. The aim of this study was to determine the antioxidant properties and cytotoxic effects of the extract prepared with dimethyl sulfoxide from P. vulgaris flowers. The total phenolic content, total flavonoid content, and reducing antioxidant power of the extract were determined using spectrophotometric methods. The cytotoxic effect of the extract on human colon (WiDr), lung (A549), liver (HepG2), breast (MCF-7), and prostate (PC-3) cancer cells and a normal human fibroblast cell line was assessed using the MTT assay. Total phenolic content and reducing power values of extract were found 33.02 +/- 0.92 mg gallic acid equivalents, and 64.86 +/- 1.18 mg trolox equivalents per g sample, respectively. Extract exhibited selective cytotoxic effect on all studied cancer cells compared to normal fibroblast cells, and the IC50 values of the extract in the cancer cell lines range from 191.8 to 375.3 mu g/mL. This work is one of the pioneering work that reveals the powerful antioxidant properties of P. vulgaris flower extract and its selective cytotoxic effect on cancer cell lines. Further studies are needed to identify the active molecules in the extract and the cytotoxic action mechanisms of these molecules.
AtıfWoS20OpenAlex22TR Dizin9İncele - MakaleAçık Erişim2019An Empirical Study on Alcohol Participation and Consumption Decision in Turkey
Ipek, Egemen
In this study, households' alcohol participation and consumption decision structures and the effect of socioeconomic factors influencing on these decisions are analyzed by using Tobit and double-hurdle models with Household Budget Survey data in Turkey. This study shows that alcohol participation and consumption decision are taken as independently from each other and sequentially based on the goodness of fit tests of the model. When the effects of household demographic variables on alcohol consumption decisions are examined, it is obtained that having a child has a negative effect on alcohol participation decision and consumption of cigarette has a positive effect on alcohol participation decision. Furthermore, household income level has a positive effect on both alcohol participation and consumption decision.
AtıfOpenAlex8TR Dizin6İncele - MakaleAçık Erişim2019Scopus SJRQ4Relationship between childhood abuse experiences, cognitive distortions and loneliness levels of high school students
Türkkan, Tugba; Odaci, Hatice
Objective: Childhood abuse experiences and their traumatic consequences have the characteristics that greatly affect the individual's future life. For this reason, it is thought that determining the variables related to neglect and abuse will be a guide for awareness-raising and prevention efforts to be made. In this study, the relationship between childhood abuse experiences, cognitive distortions and loneliness levels of high school students was investigated. Method: Study group consisted of 703 high school students. The participants were asked to complete Demographic Information Form, Childhood Trauma Questionnaire, The Interpersonal Distortions Scale and UCLA Loneliness Scale. The data were analysed using Spearman's Brown Rank Test and multiple regression. Results: The results of the data analysis indicated that a statistically significant relationship was found between physical abuse sub-dimension of childhood abuse experiences and avoidance from proximity sub-dimension of interpersonal distortions in positive way; mind reading sub-dimension of interpersonal distortions in negativeway. Also, therewas a significant positive correlation between sexual abuse sub-dimension of childhood traumatic experiences and avoidance from proximity sub-dimension of interpersonal distortions. It was found out that emotional abuse sub-dimension of childhood abuse experiences displayed a significant relationship with avoidance of proximitysub-dimension of interpersonal distortions in positive way; whereas with unrealistic expectations of relationships and mind reading sub-dimensions of interpersonal distortionsin negative way. Also it was found that childhood abuse experiences explained the 5% of the avoid proximity sub-dimension of cognitive distortions and 17% of the loneliness level. Discussion: Results of the study indicated that all sub-dimensions of childhood abuse experiences were related to sub-dimensions of cognitive distortions and loneliness levels.
AtıfWoS2OpenAlex2TR Dizin3İncele - MakaleAçık Erişim2019Determinants of Out of Pocket Health Expenditure in Turkey: Unconditional Quantile Regression
Ipek, Egemen
Out-of-pocket health expenditures include direct and indirect payments made by individuals for health goods and services. In this study, the determinants of out-of-pocket health expenditures, which are one of the most important sources of health expenditures financing, are investigated with the data of 2003-2015 Household Budget Survey using the Unconditional Quantitative Regression method proposed by Firpo et al. (2009). This method allows to produce generalizable and interpretable results in terms of political and general society compared with conditional quantitative regression methods. The most important result obtained from the study is that conditional quantitative regression method gives more consistent results than unconditional quantitative and least squares regression methods in the analyzes based on the right-skewed distribution observations such as out-of-pocket health expenditures.
AtıfWoS4OpenAlex8TR Dizin5İncele - MakaleAçık Erişim2019Determination of the Effects of Alucra Forest Planning Unit's Population Dynamics on Land Use Changes
Çakir, Gunay; Kaya, Latif Gurkan; Yücedag, Cengiz; Bayram, Sitki
Aim of study: This study is done to monitor temporal land use/land cover changes in a typical mountain watershed covering an area of 135441.0 ha in North Eastern of Turkey based on rural demographic dynamics and forest management plans belonging to the years 1987 and 2013 coupled by GIS analyses. It also investigates changes in the shape of land use class (LUC) over the period. Material and Methods: The changes occurring time wise and positional on the base of the local LUC was examined by benefiting from the forest management plans from 1987 to 2013. Moreover, the change of LUC around these areas has been examined with the 1000 m zones thrown around the settlement areas and correlated with the fast decrease of the population recent years. Demographic dynamics (increase or decrease) affect the usage of forest lands, as well. Main results: While there was an increase in the productive forest lands (pure coniferous and deciduous, and mixed forest) between 1987 and 2013. In the same periods there was a decrease in agricultural and sandy areas. The increase of patches in the productive forest lands mostly resulted from afforestation works conducted in the unproductive forest lands, and forestry maintenance activities. Another reason for this increase of forest patches is why people have immigrated to urban areas in the last years. Research Highlights: It can be said that one of the most important causes in the rise of the forest resources in the Alucra Forest Planning Units (FPU) is the time wise changes of social structure. Furthermore, the forestry activities in the study between 1987 and 2013 are also the other significant factor in this increase of forest resources.
AtıfWoS3OpenAlex5TR Dizin4İncele - MakaleAçık Erişim2019Some Physical and Mechanical Properties of Impregnated Chestnut Wood with Natural and Chemical Agent Exposed to Outdoor Conditions
Yasar, Mehmet; Altunoiv, Mustafa
Wood preservatives have been widely used to extend the service life of wood. The most objectionable environment for wood is outdoor conditions. In this study, test specimens prepared from chestnut wood (Castanea sativa Mill) were impregnated with natural and chemical impregnation agent. It was aimed to determine the effect of outdoor conditions on physical and mechanical properties of wood material by keeping them under these conditions for one year. As natural impregnation material pine tannin and acorn tannins, as chemical impregnation material imersol aqua and timbercare aqua were used. The retention amount, air-dried density, bending strength, modulus of elasticity, compression strength parallel to fibers, adhesion strength parallel to fibers, screw withdrawal strength were determined. As a result, it can be said that the physical and mechanical test values can compare wood impregnated with natural impregnation materials to wood impregnated with chemical impregnation materials after one year exposed to outdoor conditions.
AtıfWoS5OpenAlex4TR Dizin4İncele - MakaleAçık Erişim2019Investigating the Mediator Role of Brand Experience in the Effect of Attitude About Product Placement on Brand Awareness: The Case of Fi Series
Saglam, Mehmet; Avci, Ibrahim
Product placement efforts are expected to result in more desirable brand experiences and awareness as a result of consumers' brand experiences. The attitude towards product placement increases the brand experience and makes the brand more permanent in our memory. In this study, it is aimed to examine the mediating role of the brand experience in the effect of attitude towards product placement on brand awareness. The research was carried out on Fi series audiences, where product placements were frequently used. The convenience sampling method was used, and an online survey form was used as data collection tool. 173 participants were reached during the data collection process. SPSS 21, AMOS 20 and PROCESS 3.1 programs were used for data analysis. The parallel multivariate mediator model was used to examine the mediator role of brand experience dimensions. As a result of the study, it was determined that the attitude towards product placements had an effect on brand awareness and brand experience dimensions, and the greatest effect was on the sensory experience. When the mediator roles are examined, it is concluded that the sensory and behavioral brand experience has a full mediating role in the effect of attitude towards product placements on brand awareness, and the mediator effect of the behavioral brand experience was higher.
AtıfWoS1OpenAlex5TR Dizin4İncele - MakaleAçık Erişim2019Scopus SJRQ2New records from Artabel Lakes nature park (Gümüşhane/Turkey) to the freshwater algal flora of Turkey
Şahin, Bülent; Akar, Bülent
Six newly recorded taxa, Chlamydomonas pertusa Chodat, Coenochloris pyrenoidosa Korshikov, Coenocystis tapasteana Komárek, Katagnymene accurata Geitler, Phormidium stagninum Anagnostidis, and Scytonema coactile Montagne ex Bornet & Flahault, were described from epipelic, epilithic, and epiphytic materials of the 17 high mountain lakes and a pond in Artabel Lakes Nature Park. The morphology of all species was examined by light microscopy. In this paper, the morphology, ecology, and distribution of these species are discussed. Photos of the species are also provided.
AtıfScopus5WoS4OpenAlex2TR Dizin6
İncele - MakaleAçık Erişim2019Scopus SJRQ3Secondary metabolites of ethanol extracts of pinus sylvestris cones from eastern anatolia and their antioxidant, cholinesterase and α-glucosidase activities
Topal, Meryem
Scots pine (Pinus sylvestris) is the most widely distributed tree species among pine species. Antiradical, antioxidant properties and inhibition properties on butyrylcholinesterase (BChE), acetylcholinesterase (AChE) and α-glycosidase activities of ethanol extracts of P. sylvestris were reported from Sarikamis (Kars), Gumushane and Erzurum provinces of Turkey. The cones of P. Sylvestris from Gumushane showed the highest IC50 values in both DPPH. (14.75 µg/mL) and ABTS.+ (12.56 µg/mL) radical scavenging activities. An LC-HRMS method developed and the secondary metabolite composition of extracts were identified. The major compounds are determined as (+)-trans taxifolin, quercitrin, fumaric acid, (-) epicatechin, and nepetin-7-O-glucoside, apigenin-7-O-glucoside in P. sylvestris cones.
AtıfScopus65WoS60OpenAlex47TR Dizin21İncele - MakaleYayıncıda açık erişim2019Scopus SJRQ2The investigation of different chicane applications in traffic calming studies using driving simulator; [Trafik sakinlestirme çalismalarinda farkli kivrimlama uygulamalarinin sürüş simülatörü ortaminda incelenmesi]
Aydin, Metin Mutlu; Akgöl, Kadir; Günay, Banihan
High vehicular speeds are one of the most frequent complains in urban roads. Lack of obedience to speed limits results in many fatal accidents. Traffic calming measures have been widely used in many developed countries to reduce accidents, the negative effects of speeding and traffic noise in urban roads. In the scope of this study, horizontal calming measures, namely chicanes, which are not in use in Turkey yet, have been studied by using a driving simulator for the aim of controlling and reducing vehicular speeds. For this purpose, Akdeniz University campus was selected as the pilot case area and a number of different roads in the campus have been modeled in 3D. It was determined from the speed data that for divided four lane carriageways, chicane number 10 (K10) which has 3 m effective width and 45 entry and exit angles, for undivided two lane carriageways, chicane number 2 (K2) which has 2.7 m effective width and 60 entry and 30 exit angles, gave the best outcome from the driving tests in accordance with the characteristics of Turkish drivers. Furthermore, based on the findings, common driver errors are identified and a number of recommendations are made.
AtıfScopus6WoS5OpenAlex5TR Dizin5İncele - MakaleAçık Erişim2019Scopus SJRQ2New desmid records from high mountain lakes in Artabel Lakes Nature Park, Gümüşhane, Turkey
Şahin, Bülent; Akar, Bülent
The algal flora of 17 lakes and 1 pond in the Artabel Lakes Nature Park were investigated during two summer seasons (2013 and 2016). In total, 26 desmid taxa were found and identified as new records for the desmid flora of Turkey based on their morphotaxonomic characteristics and ecological preferences. The taxa identified belong to the genera Actinotaenium (1), Closterium (1), Cosmarium (15), Micrasterias (1), Spondylosium (1), Staurastrum (5), Teilingia (1), and Tetmemorus (1). Morphotaxonomy, ecology, and distribution of each species were discussed in detail.
AtıfScopus7WoS5OpenAlex8TR Dizin7İncele - MakaleYalnız künye2019Scopus SJRQ4On some properties of hyper-bessel and related functions
Aktaş, I.
In this study, by using the Hadamard product representation of the hyper- Bessel function and basic concepts in mathematics we investigate the sign of the hyper- Bessel function x → J αd (x) on some sets. Also, we show that the function x → J αd (x) is a decreasing function on [0, J αd ,1), and the function is an increasing function on (0,∞), where j αd ,1 and II αd denote the first positive zero of the function J αd (x) and modified hyper-Bessel function, respectively. In addition, we prove the strictly log-concavity of the functions J αd (x) and J αd (x) on some sets. Moreover, we give some illustrative examples regarding our main results.
AtıfScopus4WoS5TR Dizin2İncele - MakaleYayıncıda açık erişim2019Scopus SJRQ4Investigating the mechanical behavior of reclaimed asphalt pavement (RAP) bases in large scale test box
Seferoğlu, Ayşegül Güneş; Seferoğlu, Mehmet Tevfik; Akpinar, Muhammet Vefa
The objective of this research was to assess the elastic deformations and permanent strains of reclaimed asphalt pavement (RAP) material as a base layer when it is treated or untreated with pozzolanic cement under cyclic loads. A large-scale cyclic plate loading testing (CPLT) device was developed for studying the mechanical characteristics of pavement base layer. The laboratory test results indicated that when the RAP percentage of the mixtures increased, elastic deformations and permanent strains increased, but the opposite was true when the cement percentage increased. It was concluded that 100% RAP material can be used in base layers with 3% pozzolanic cement. The obtained deformation values and strain rates can be used as reasonable default design input values by pavement designers when using RAP as a substitute for natural aggregate base layers.
AtıfOpenAlex2İncele - MakaleYayıncıda açık erişim2019Scopus SJRQ4Evaluation of soil geochemistry data of Canca Area (Gümüşhane, Turkey) by means of Inverse Distance Weighting (IDW) and Kriging methods-preliminary findings
Vural, Alaaddin
The purpose of this study is to assess soil geochemical data of the Canca alteration area (Gümüşhane-Turkey) using statistical methods and investigate potential gold mineralizations of the area. With this purpose, 288 soil samples were collected and analyzed for gold and associated pathfinder elements. The concentrations ranged (Au and Hg: in μg/kg, others in mg/kg) between 0,68-19,20; 0,02-28,97; 2-314; 7-857; 2,1-394; 4-199,5; 0,59-49,29; 5-89; 0,04-37; 0,52-16,30; 1,25-91,9 for Au, Ag, Cu, Pb, Zn, As, Sb, Bi, Mo, Sn and Hg respectively. According to Sperman’s rho correlation coefficients, although not very strong, correlation was observed between Cu and Au; Zn and Cu; Sb and Pb and As; Mo and Pb and As and Sb; Sn and As; Sb and Mo. The threshold values of the elements were obtained by median+2 the median absolute deviation. The prediction maps of the elements were formed by using the Inverse Distance Weighting and Kriging methods. According to prediction maps; especially in the western part of the study area and also related to tectonic lines, elemental enrichments, (gold and silver) were determined. Therefore, it is suggested to give importance to the west of the area in exploration drilling, geophysics, etc. Since the element prediction maps produced by the Inverse Distance Weighting method has higher resolution in anomaly contrast, it is suggested that maps produced with this method can preferably be used to give an idea at first sight in soil geochemistry studies.
AtıfScopus15WoS12OpenAlex5İncele - MakaleAçık Erişim2019OBJECT BASED BURNED AREA MAPPING WITH RANDOM FOREST ALGORITHM
Comert, Resul; Matcı, Dilek Kucuk; Avdan, Ugur
It is very important to map the burned forest areas economically, quickly and with the high accuracy of issues such as damage assessment studies, fire risk analysis, and management of forest regeneration processes. Remote sensing methods give advantages such as fast, easy-to-use and high accuracy for burned area mapping. Recent years machine learning algorithms have become more popular in satellite image classification, due to the effective solutions for the analysis of complex datasets which have a large number of variables. In this study, the success of object based random forest algorithm was investigated for burned forest area mapping. For this purpose, Object based image analysis (OBIA) was performed using Landsat 8 image of the Adrasan and Kumluca fires which occurred in 24 – 27 June 2016. The study consisted of five steps. In the first step, the multi-resolution image segmentation was performed for obtaining image objects from Landsat 8 spectral bands. In the second step, the image object metrics such as spectral index and layer values were calculated for all image objects. In the third step, a random forest classifier model was developed. Then, the developed model applied to the test site for classification of the burned area. Finally, the obtained results evaluated with confusion matrix based on the randomly sampled points. According to the results, we obtained 0.089 commission error (CE) with 0.014 omission error (OE). An overall accuracy was obtained as 0.99. The results show that this approach is very useful to be used to determine burned forest areas.
AtıfScopus49WoS47OpenAlex63TR Dizin13İncele - MakaleAçık Erişim2019Region-Time-Magnitude Analyses of the Seismicity in and around the Central Anatolian Region and Current Earthquake Potential; [Orta Anadolu Bölgesi ve Civarındaki Depremselliğin Bölge-Zaman-Magnitüd Analizleri ve Güncel Deprem Potansiyeli]
Öztürk, Serkan
The purpose of this study is to make detailed statistical analyses of earthquake occurrences in and around the Central Anatolian Region of Turkey and to forecast the possible earthquake regions in the future. In this scope, by performing the region-time-magnitude analyses of seismotectonic variables such as Mc-value, b-value, Dc-value, Z-value, the current/future earthquake potential was defined. b-value was computed as 1.26±0.07 by taking Mc=2.6 and this large value indicates that the earthquakes with small magnitude are dominant. Dc-value was calculated as 1.31±0.03 and this relatively small value shows that distance between the epicenters approaches the diameter of cluster, and earthquake activity is more clustered in larger regions/at smaller scales. Anomaly regions with low b-value and large Z-value at the beginning of 2019 were found in and around Tuz Gölü Fault Zone, Central Anatolian Fault Zone, Salanda and Niğde faults. As an important result, these regions may be considered as the most likely regions for strong/large earthquakes in the future.
AtıfScopus3TR Dizin3İncele - Derleme MakaleAçık Erişim2019Scopus SJRQ4A Review Study on the Using of Diethyl Ether in Diesel Engines: Effects on CO2 Emissions
Sezer, İsmet
Vehicle and other fuel combustion emissions can change the composition of the atmosphere, increasing its ability to trap heat. Gases that are effective in trapping heat are called greenhouse gases and include all of the gases in vehicle emissions. The major component of greenhouse gases emissions is carbon dioxide (CO2). Reduction of CO2 emissions has become a concern worldwide. Introduction of biofuels to fueling of automotive engines is the one method to decrease emissions of greenhouse gases. The CO2 from biofuels, is emitted during combustion and absorbed during growth of tree end plants. These biofuels can be applied as blends or sole fuels. The most researches declare that the best way to reduce greenhouse emissions is the use of various biofuels. Therefore, it is very important that the results of various studies on alternative fuels or fuel additives are evaluated together to practice applications. On the other hand, diesel cars are also helping to reduce CO2 emissions. For these reasons, this study especially focuses on the use diethyl ether in diesel engines as fuel or fuel additive in various diesel engine fuels. This review study investigates the effects of diethyl ether addition on the CO2 emissions.
AtıfScopus5WoS7OpenAlex7TR Dizin2İncele - MakaleAçık Erişim2019Physicochemical, Textural, Cooking and Sensory Properties of Traditional Turkish Homemade Noodle Enriched with Apple Fiber; [Elma Lifi ile Zenginleştirilmiş Geleneksel Türk Ev Yapımı Eriştelerin Fizikokimyasal, Tekstürel, Pişme ve Duyusal Özellikleri]
Yuksel, Ferhat; Gurbuz, Melek
The aim of this study is to determine some physicochemical, textural, cooking and sensory characteristics of traditional Turkish homemade noodles enriched with apple fiber. Apple fiber was incorporated into the noodle dough formulation at three different concentrations (5, 10 and 20%). Dry matter contents of the samples were in the range of 91.80-92.93% and an increase in dry matter with the addition of apple fiber was determined. Protein contents of the samples were in the range of 8.817-9.909 % and decreased significantly (p<0.05) with the addition of apple fiber. Firmness value was determined to be 33.81 kg in the noodle sample enriched with 20% apple fiber while the firmness value of un-enriched one was 23.09 kg. Color characteristics were significantly affected from the apple fiber concentration (p<0.05). Generally, cooking properties of the samples increased significantly in the noodles with the enrichment of apple fiber (p<0.05). No significant difference was determined for the overall acceptability of samples (p>0.05). Results indicated that innovative noodles could be produced by using apple fiber.
AtıfScopus4OpenAlex4TR Dizin2İncele - MakaleAçık Erişim2018Atık Barajı Rezervuarı ve Cevher Stok Alanlarında Asit Maden Drenajı (AMD) Oluşumunun Değerlendirilmesi: Gümüşhane Örneği
Akaryali, Enver; Gücer, Mehmet Ali; Alemdag, Selçuk
Doğal kaynakların kullanımı ile ilgili işlemlerin başında gelen madencilik faaliyetleri, işletmenin türüne ve büyüklüğüne bağlı olarak farklı boyutlarda gelişen çevresel etkilere ve bozulmalara neden olmaktadır. Bu etkilerin başında, madencilik faaliyetleri sırasında ve sonrasında ciddi ekolojik riskler oluşturan Asit Maden Drenajı (AMD) gelmektedir. AMD, sülfür içeren (özellikle pirit, pirotin ve kalkopirit) cevher atıkların, tipik olarak hava (oksijen) ve su içeren ortamlarda, yeraltı suyu, yağmur ve akıntı nedeniyle oksitleyici koşullara maruz kalması sonucu meydana gelen asit oluşumunu ifade etmektedir. Bu çalışmada, Gümüştaş Madenciliğe ait işletme sahası, cevher stok ve atık depolama alanlarında AMD oluşumunu belirlemeye yönelik işlemler yapılmış ve AMD gelişme potansiyeli ile muhtemel AMD gelişmesi durumunda alınacak tedbirler ortaya konmuştur. Maden işletme alanı, Eosen yaşlı andezit ve bazalt ile bu kayaçların piroklastitlerinden oluşan Alibaba Formasyonu içerisinde yer almaktadır. Yapılan çalışmalarda pH değerleri tüm örneklerin I. sınıf kıta içi kaynak suyu özelliğinde olduğunu, macun pH ve sülfid (S-2) değerleri ise maden işletme sahasında AMD potansiyelinin bulunmadığına işaret etmektedir. Ana ve iz elementlerin düşük mobiliteye sahip olması ise bu durumu destekler niteliktedir. Tüm örneklerde Net Nötralizasyon Potansiyeli (NNP) değerlerinin 20 kg CaCO3/ton’dan ve Nötralizasyon Potansiyel Oranı (NPO) değerlerinin 2’den büyük olması da potansiyel asit üretmeyen karakterde olduğunu göstermektedir. S-2 değerlerinin çok düşük olması, söz konusu alanda kısa dönem içerisinde asit kaya drenajı potansiyeli gerçekleşmeyeceğini işaret etmektedir. Buna ek olarak, stok sahasını geçirimsiz hale getirmek için 50 cm kalınlığında geçirimsiz kil serilerek sıkıştırılmış, oluşan düşey profil sonlu eleman ağ sisteminde modellenerek su deşarjları belirlenmiştir. Yapılan tüm çalışmalar neticesinde maden işletme sahasında kısa sürede AMD oluşumu beklenmediği sonucuna varılmıştır. Ancak, maden işletme alanında, uzun sürelerde muhtemel AMD oluşumundan kaynaklanacak çevre kirliliği, yapılan çalışma kapsamında alınacak tedbirlerle önlenmiş olacaktır.
AtıfOpenAlex6TR Dizin6İncele