20 localities were randomly selected in Eastern Black Sea Region of Turkey and samples were collected from around the beehives from April to September. Total of 4,640 dead adult worker bees were examined during the st...20 localities were randomly selected in Eastern Black Sea Region of Turkey and samples were collected from around the beehives from April to September. Total of 4,640 dead adult worker bees were examined during the study. Total infection rate in worker bees was 21.23%. Nosema ceranae was identified in all localities with molecular techniques. Temperature and humidity values were measured from around the beehives during field studies. The infection rate ofN. ceranae increased proportionally with increasing temperature and humidity factors. Humidity was more effective than temperature on the infection rate ofN. ceranae. The seasonal activity ofN. ceranae was studied. The highest infection rates were observed in June and July. N. ceranae infection rate was higher in localities that were in low-altitude than in localities that were in high-altitude.展开更多
Olfactory receptors(ORs),the largest vertebrate multigene family,exhibit wide copy number variation among taxa,ranging from~100 to 4000.The ecological importance of smell has been suggested to positively correlate wit...Olfactory receptors(ORs),the largest vertebrate multigene family,exhibit wide copy number variation among taxa,ranging from~100 to 4000.The ecological importance of smell has been suggested to positively correlate with OR gene number,though debate exists on whether the number of total ORs,functional ORs,or the percentage of pseudogenes matters most.While olfaction has been poorly studied in most birds,Turkey Vultures(Cathartes aura)demonstrate keen olfactory ability,capable of foraging using smell alone.In contrast,Black Vultures(Coragyps atratus)have been thought to primarily use vision to locate food.Comparison of the OR genes in these two New World vultures presents an opportunity to examine the dynamics of OR evolution in related avian species that may differ in olfactory abilities.Using a PCR and cloning approach with degenerate primers,we sampled the OR subgenome in Turkey and Black Vultures,as well as Red-tailed Hawks(Buteo jamaicensis)and the distantly related Chicken(Gallus gallus),neither of which are thought to use olfaction extensively.Our results indicate that Turkey Vultures have many more OR genes than Red-tailed Hawks or chickens.Surprisingly,Black Vultures had an intermediate number of OR genes.The number of OR genes we estimated in the Turkey Vulture was much greater than previously reported in studies that used short-read sequencing.Additionally,we found that OR genes from New World vultures and Red-tailed Hawks form clades that were distinct from the clade that included most chicken OR genes,indicating that chickens share few OR orthologs with New World vultures or hawks.As previously observed in other animal groups,pseudogenes appeared throughout all clades and their percentage varied among taxa.These findings suggest the OR gene family is highly dynamic,changing rapidly over evolutionary time,and that taxa may have distinct suites of ORs in their genomes.展开更多
On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault ...On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian Subplate.In this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field inversions.The earthquakes were localized in the upper crust and exhibited steep dip angles.Furthermore,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly zones.The East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear stress.However,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear stress.The ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.展开更多
Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significan...Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significantly to spatial prioritization where there is also a high probability of achieving positive effects of consolidation projects.This study aims to determine the shape degree of the agricultural parcels both at singular and rural county scales in Tekirdag Province,Turkey in 2020 by combining the parcel shape index(PSI) with the minimum bounding geometry index(MBG) to improve parcel scores.Hot-spot zones of the highly irregular and near optimum parcels were also determined using Getis-Ord G_(i)^(*) statistic.The parcel degrees were classified into four categories,namely highly irregular,irregular,regular and near optimum.The obtained unweighted scores of the parameters exhibit deviations from the expected values.After weighting by pairwise comparison,the values approached ideal scores.Among 346 740 parcels,53% were highly irregular and irregular and 47% were regular and near optimum shapes after weighting whereas these were 70% and 30%,respectively before weighting.The average parcel degree of 63 rural counties was regular while the average parcel degree of the remaining 264 rural counties was irregular.The combined use of PSI and MBG index improved the correctness of the parcel shape score.It could be suggested to use as a tool in land consolidation prioritization.展开更多
The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of su...The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of sub-continental lithospheric mantle(SCLM)sources and parental melt generation.So far,the traditional whole-rock lithophile geochemical data of these basic volcanic rocks have provided important constraints on the nature of SCLM sources.Integrated lithophile element and HSE geochemical data of these basic volcanic rocks also reveal the heterogeneity of the SCLM source,which is principally related to variable metasomatism resulting from previous subduction(s)and post-collisional mantle-crust interactions in an extensional setting.Lithophile element geochemical features suggest that the parental magmas have derived from metasomatized spinel-to garnet-bearing SCLM sources for Eocene and Miocene basic volcanic rocks with subduction signatures whereas originated from spinel-to garnet-bearing SCLM sources for Mio-Pliocene and Plio-Quaternary basaltic volcanic rocks without the subduction signature.Lithophile element and HSE geo-chemistry also reveal that Eocene and Miocene basic vol-canic rocks were affected by more pronounced crustal contamination than the basaltic volcanic rocks of Mio-Pliocene and Quaternary.Furthermore,the integrated lithophile element and HSE compositions of these basic volcanic rocks,together with the regional asymmetric lithospheric delamination model,reveal that the compositional variation(especially due to metasomatism)was significant temporally in the heterogeneity of the SCLM sources from which parental magmas formed during the Cenozoic era.展开更多
On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Platea...On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Plateau in Turkey. Based on the WGM2012 Bouguer gravity anomaly data and the Etopo1topography data, this study first introduced a joint inversion of admittance and coherence functions and used the Bayesian optimal parameter estimation method to obtain the effective elastic thickness Teand loading ratio F of the lithosphere for various tectonic units in the Anatolian Plateau. Secondly, we discussed the characteristics and influencing factors of the lithospheric mechanical strength and analyzed its relationship with seismic activity. The lithospheric mechanical strength of the Anatolian Plateau showed clear lateral heterogeneity and a "weak-strong-weak" spatial pattern from east to west,reflecting various tectonic processes. At last, the strong seismic activity was found where the lithospheric strength was low in the Anatolian Plate. We also incorporated GPS strain rate and other results to investigate the tectonic background and primary causes of the M_(W)7.8 and M_(W)7.5 doublet earthquakes in Turkey. The results have a good insight into urban safety design in the Turkish region, including postdisaster rehabilitation, earthquake hazard assessment, and loss reduction.展开更多
This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the tw...This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the two countries during diplomatic visits.Because the article concentrated on the remarks that were stressed during visits and meetings that took place between the years 2002 and 2022,it was necessary to search through 150 news on civil.ge site and filter down to 35 news before applying the content analysis.The AntConc corpus analysis was used in order to comprehend the nature of the political conversation between both countries.According to the findings,the constructivism of core theme that claim states view each other via the identity through interaction was verified.The purpose of the research is to provide a contribution to the study of the identities and interests of Georgia and Turkey who are good neighbors.展开更多
Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Gu...Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Guangxi)-Turkey Economic and Trade Cooperation Promotion Conference jointly hosted by CCPIT’s Guangxi Branch and the Turkish Consulate General in Guangzhou was held in Nanning,with the aim to further expand exchanges and cooperation between Turkey and Guangxi in the economic and trade fields.展开更多
Karl Nagalhard(1881-1978),formerly known as KarlNagel,was a German paleobotcist whose ideaniity remainedobscured due to his surname and career change at a rel-atively young age.He was active in paleobotary between1914...Karl Nagalhard(1881-1978),formerly known as KarlNagel,was a German paleobotcist whose ideaniity remainedobscured due to his surname and career change at a rel-atively young age.He was active in paleobotary between1914-1922,then he trcsferred to aother acadenac field;but even so,contirued io study paleobotay throughouthis life.The tife and research of Nagalhard are evaluatedhere as a part of the history of Cenozoic paleobotary inTurkey,including a synopsis of the early coal industry.The first significart accounts with descriptions and iltis-trations on the subject were produced by Unger;Engel-hard and Nagalhard respeciively,emphaszing the sigrificanceof the Germanspeaking Ceritrat Euaropean paleobotaists.Asbeing the youngest anong then,Nagalhard deterninedthree taxa from Agact Fltorula in Istanbul and seven taxafron Yenikoy Florula in Kutalya,and provided vatuableremarks on the biostr atigraphy and paleoervironment inhis publication which is exaniined here for the first timealnost after a century.展开更多
The Kestelek borate deposit has been the subject of geological and mineralogical research over the last decades, but major and trace element geochemistry of this deposit was first investigated in the present study. A ...The Kestelek borate deposit has been the subject of geological and mineralogical research over the last decades, but major and trace element geochemistry of this deposit was first investigated in the present study. A total of 22 samples collected from surface exposures and different depths of deposit in boreholes（e.g., lower, middle and upper） comprise the material of this study. Major, trace and REE element analyses of samples were conducted with ICP-MS and ICP-ES methods. The Kestelek borate deposit of Miocene age was formed in playa lakes in an intermountain closed basin which was developed in volcanically and seismically active areas associated with growth faults and grabens affected the whole Anatolia at the beginning of Paleogene. Only colemanite was found as the borate mineral accompanied in lesser amount by calcite, aragonite, smectite, illite, chlorite, corrensite, heulandite and quartz. In colemanite samples, all major elements, except for Ca, show depletion trends with respect to average of earth crust and andesite. For the trace elements, Li, Cs, Sb, As, Sr and Se are characterized by significantly high concentrations. Evaluation of element concentrations and geochemical characteristics reveal that As, Cs, Sb and Li are of detrital origin, Se together with B and Ca are of non-detrital and Sr is indicative of both detrital and non-detrital origin. REE distributions indicate that at least two different depositional regimes prevail in the environment. Corrensite, a clay mineral forming in lake waters, is derived from volcanism. Negative Ce and positive Eu anomalies are indicative of contribution from hydrothermal solutions and fluids.展开更多
In this study, two Satureja L. species from different localities of Turkey （Satureja hortensis L. and Satureja boissieri Hausskn. ex Boiss.） have been studied to determine their taxonomic classification based on che...In this study, two Satureja L. species from different localities of Turkey （Satureja hortensis L. and Satureja boissieri Hausskn. ex Boiss.） have been studied to determine their taxonomic classification based on chemical characters. For this purpose, aerial parts of the studied taxa were investigated by HS-SPME/GC-MS. 28, 30 and 29 compounds were identified in S. boissieri from Sanhurfa, BingS1 and Malatya accounting from 90.80%, 91.31% and 92.67% of the whole oil, respectively. 26, 30 and 28 compounds were identified in S. hortensis from Adlyaman, Diyarbaklr, Elazl~ accounting from 93.20%, 92.85% and 92.42% of the whole oil, respectively, y-terpinene （30.4%, 26.5% and 32.1%）, carvacrol （26.4%, 25.2% and 23.3%） and p-cymene （10.5%, 13.2% and 10.4%） were determined as main compounds of S. boissieri in Sanhurfa, Bing6l and Malatya species, respectively. Carvacrol （25.0%, 34.1% and 32.1%）, thymol （28.2%, 20.2% and 28.1%） and y-terpinene （10.1%, 11.3% and 9.4%） were found as main constituents of S. hortensis in Adlyaman, Diyarbaklr and Elazl~ samples, respectively. The chemical distributions of the essential oil compounds in the Satureja pattern were discussed in respect to their chemotaxonomy and natural products.展开更多
The main purpose of this study was to determine the changes in the water quality of Melendiz and Karasu streams, which recharge the Mamasin dam, and to evaluate its environmental impacts on the dam site that provides ...The main purpose of this study was to determine the changes in the water quality of Melendiz and Karasu streams, which recharge the Mamasin dam, and to evaluate its environmental impacts on the dam site that provides drinking water and irrigation demand in Aksaray city in the Central Anatolia of Turkey. The field researches were focused on estimating the main sources of contamination, determining and evaluating the changes in the water quality due to the direct wastewater discharges into the Melendiz and Karasu rivers, which recharge the Mamasin dam sites. During the study, water samples were collected from Melendiz and Karasu stream and Mamasin dam, and then, the physical and chemical analyses of water samples were conducted. The relevant in-situ and laboratory analyses were carried out during the dry and wet seasons. The results of the analyses showed that in term of the surface water quality criteria in terms of NO3-N value of both rivers and dam waters, the water quality is always considered as the 1st class in Melendiz stream, the 2nd class in Karasu stream and the 3rd class in Mamasin dam lake. Whereas, in terms of NO4-N values of both rivers and dam waters, the water quality is always considered as the 1st class in Melendiz stream, the 2nd-3rd class in Karasu stream. The total organic carbon （TOC） range for Karasu river is usually from 20 mg/L to 40 mg/L. The high value of organic matter in the Karasu stream can be explained by the availability of intensive green wetlands around this water resource. Finally, the Ministry of Forest and Water Authority give some suggestions for estimating protection zones of Melendiz stream and Mamasin basin＇s area, such as using the results of environmental tracers to investigate the agricultural contamination, including more sophisticated applications of multiple-tracer analyses to evaluate the travel time of contaminants and estimate the boundary of protection zones.展开更多
Known data on the distribution of Alliocera graeca Saunders, 1845 and Ber＆ chalybata （Forster, 1771） in Europe are summarized. A. graeca has been reliable recorded from Albania, Croatia and Greece. B. chalybata has...Known data on the distribution of Alliocera graeca Saunders, 1845 and Ber＆ chalybata （Forster, 1771） in Europe are summarized. A. graeca has been reliable recorded from Albania, Croatia and Greece. B. chalybata has been reliable recorded from Austria, Belgium, Bulgaria, Czech Republic, Denmark, England, Finland, France, Germany, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Roumania, Russia, Slovakia, Sweden, Switzeland. A. graeca and B. chalybata, known as European species, are new records for the Turkish Fauna. In this study, the female ofA. graeca and the female ofB. chalybata are presented and photographs of two species are accompanied. Distribution of these species treated is briefly discussed.展开更多
The quartz fabric variation and the operation of slip systems were governed by the deformation flow. A new concept named quartz fabric slip flow pattern is to be considered thourgh this relation. On the other hand, st...The quartz fabric variation and the operation of slip systems were governed by the deformation flow. A new concept named quartz fabric slip flow pattern is to be considered thourgh this relation. On the other hand, strain path, quartz fabric variation and strain fabric development are inter related events which controlled by the deformation flow pattern. These events and related structures were analyzed in the Kazdag （IDA） stack antiform. The quartz fabric variation and the strain path analysis reveal mainly three distinct tectonic stages. These are initial vertical extrusion tectonic and following horizontal spreading tectonics. The beginning stage vertical extrusion represented by the quartz Y maxima fabric in rounded pattern and constructional strain and lengthening strain facies. The latest stage of the vertical extrusion also represented by the quartz fabric, constructional strain but proximating to plane strain and lengthening-widening strain facies. The vertical extrusions governed by the steeply dipping reverse faulting at the initial stage and then fallowed by the gently dipping thrusting at the latest stage. The flattening deformation was developed during the horizontal spreading stage. Typical incomplete single girdle quartz fabric, flattening type oblate strain and thinning--widening strain facies are characteristic features of the nappe tectonics.展开更多
Transportation infrastructure and logistics facilities are partly different in both Turkey and Germany in terms of geographical location, industrial history and economy. The world witnesses the highest logistics perfo...Transportation infrastructure and logistics facilities are partly different in both Turkey and Germany in terms of geographical location, industrial history and economy. The world witnesses the highest logistics performance index score in Germany. Meanwhile, Turkey experiences a promptly development. As Europe＇s largest economy and second most populous nation, Germany leads in developing logistics strategies and services as a key member of the EU＇s economic and political structure. On the other hand, Turkey possesses a strategic location between the continents but conventionally problems in transportation mode sprit and interconnectivity of systems that interfere with ＂hub＂ role for its region and achieve economic benefit. This paper aims to focus on transportation mode sprit and location decision of freight villages in Germany to understand the mind behind success. With this purpose, first section is substantially based on secondary data gathered from Turkish/German Statistical Institutes, Ministries of Transportation and NGO＇s of the sector and academic studies. Finally, the lessons to be taken for Turkey＇s future policies are presented. Results indicate that, the finest detail is hidden behind the railway investments and their connections with other modes for Turkey. Germany＇s logistics workforce and infrastructure is geographically spread all over the country, but in Turkey, unbalanced regional development force country to polarised developed regions in the western part.展开更多
Natural gas is one of the key energy resources for Turkey due to fact that 32% of annual primary energy supply and 45% of annual electricity production is obtained from natural gas with also common usage of residentia...Natural gas is one of the key energy resources for Turkey due to fact that 32% of annual primary energy supply and 45% of annual electricity production is obtained from natural gas with also common usage of residential and industrial zones. In this study, the supply security of natural gas was taken into consideration with strategic criteria of energy policy with the SWOT （strengths, weaknesses, opportunities and threats） analysis and the future projection for Turkey. It has been concluded on geopolitics criteria, domestic production and research for resources must be stimulated as high as possible and participation to abroad resources must be implemented.展开更多
Nowadays, global warming is a major environmental concern. Climate change is dominating the environmental agendas, especially in developed countries at first, but by now, around the world. Several initiatives have bee...Nowadays, global warming is a major environmental concern. Climate change is dominating the environmental agendas, especially in developed countries at first, but by now, around the world. Several initiatives have been undertaken to reduce the effect of increasing atmospheric GHGs （greenhouse gasses） concentrations. Emerging carbon emissions trade under the Kyoto Protocol serves to market the carbon quotas among the countries, thus, it helps to increase their level of GNP （gross national product）. Emissions trade is being performed in the voluntary and compliant markets. Increasing interest in emission trade emerged carbon and energy exchanges markets in the world. Turkey is located in the voluntary markets, and organizations buying carbon offset credits in order to achieve their voluntary emission reduction goals. GS （gold standard） and VCS （verified carbon standard） are mainly being used to finance renewable energy projects in Turkey. In the GS, there are 209 projects which are currently in the approval process or in the application, such as wind energy, hydroelectric power plant and biogas energy production. In addition to these, in the VCS, there are 61 projects which are mainly energy industries, in the approval process or in the application. Most environmental issues require long-term plans which include international cooperation, especially climate change. The Kyoto Protocol marks the beginning of a new era to combat global climate change. Voluntary markets are very popular and forty percent of the total global GS projects and around nine percent of VCS projects are implemented in Turkey. These projects are initial steps for future implementations of compliant markets in Turkey.展开更多
AIM: To investigate and compare frequencies of serum positive cagA in patients from two separate regions of Turkey who were grouped according to the presence of peptic ulcer disease or non-ulcer dyspepsia.METHODS: One...AIM: To investigate and compare frequencies of serum positive cagA in patients from two separate regions of Turkey who were grouped according to the presence of peptic ulcer disease or non-ulcer dyspepsia.METHODS: One hundred and eighty Helicobacter pyloripositive patients with peptic ulcer disease or non-ulcer dyspepsia were included in the study. One hundred and fourteen patients had non-ulcer dyspepsia and 66 had peptic ulcer disease (32 with gastric ulcers and/or erosions and 34with duodenal ulcers). Each patient was tested for serum antibody to H. pylori cagA protein by enzyme immunoassay.RESULTS: The total frequency of serum positive cagA in the study group was 97.2 %. The rates in the patients with peptic ulcers and in those with non-ulcer dyspepsia were 100% and 95.6%, respectively. These results were similar to those reported in Asian studies, but higher than those that have been noted in other studies from Turkey and Western countries.CONCLUSION: The high rates of serum positive cagA in these patients with peptic ulcer disease and non-ulcer dyspepsia were similar to results reported in Asia. The fact that there was high seroum prevalence regardless of ulcer status suggests that factors other than cagA might be responsible for ulceration or other types of severe pathology in H. pylori-positive individuals.展开更多
文摘20 localities were randomly selected in Eastern Black Sea Region of Turkey and samples were collected from around the beehives from April to September. Total of 4,640 dead adult worker bees were examined during the study. Total infection rate in worker bees was 21.23%. Nosema ceranae was identified in all localities with molecular techniques. Temperature and humidity values were measured from around the beehives during field studies. The infection rate ofN. ceranae increased proportionally with increasing temperature and humidity factors. Humidity was more effective than temperature on the infection rate ofN. ceranae. The seasonal activity ofN. ceranae was studied. The highest infection rates were observed in June and July. N. ceranae infection rate was higher in localities that were in low-altitude than in localities that were in high-altitude.
基金supported by a grant from the Singer Biology Fund at the University of Florida。
文摘Olfactory receptors(ORs),the largest vertebrate multigene family,exhibit wide copy number variation among taxa,ranging from~100 to 4000.The ecological importance of smell has been suggested to positively correlate with OR gene number,though debate exists on whether the number of total ORs,functional ORs,or the percentage of pseudogenes matters most.While olfaction has been poorly studied in most birds,Turkey Vultures(Cathartes aura)demonstrate keen olfactory ability,capable of foraging using smell alone.In contrast,Black Vultures(Coragyps atratus)have been thought to primarily use vision to locate food.Comparison of the OR genes in these two New World vultures presents an opportunity to examine the dynamics of OR evolution in related avian species that may differ in olfactory abilities.Using a PCR and cloning approach with degenerate primers,we sampled the OR subgenome in Turkey and Black Vultures,as well as Red-tailed Hawks(Buteo jamaicensis)and the distantly related Chicken(Gallus gallus),neither of which are thought to use olfaction extensively.Our results indicate that Turkey Vultures have many more OR genes than Red-tailed Hawks or chickens.Surprisingly,Black Vultures had an intermediate number of OR genes.The number of OR genes we estimated in the Turkey Vulture was much greater than previously reported in studies that used short-read sequencing.Additionally,we found that OR genes from New World vultures and Red-tailed Hawks form clades that were distinct from the clade that included most chicken OR genes,indicating that chickens share few OR orthologs with New World vultures or hawks.As previously observed in other animal groups,pseudogenes appeared throughout all clades and their percentage varied among taxa.These findings suggest the OR gene family is highly dynamic,changing rapidly over evolutionary time,and that taxa may have distinct suites of ORs in their genomes.
基金supported by grants from the National Natural Science Foundation of China(Grant Nos.42130312 and 4198810101)the Second Tibetan Plateau Scientific Expedition and Research Program(Grant No.2019QZKK07)
文摘On February 6,2023,two earthquakes with magnitudes of M_(W) 7.8 and M_(W) 7.5 struck southeastern Turkey,causing significant casualties and economic losses.These seismic events occurred along the East Anatolian Fault Zone,a convergent boundary between the Arabian Plate and the Anatolian Subplate.In this study,we analyze the M_(W) 7.8 and M_(W) 7.5 earthquakes by comparing their aftershock relocations,tomographic images,and stress field inversions.The earthquakes were localized in the upper crust and exhibited steep dip angles.Furthermore,the aftershocks occurred either close to the boundaries of low and high P-wave velocity anomaly zones or within the low P-wave velocity anomaly zones.The East Anatolia Fault,associated with the M_(W) 7.8 earthquake,and the SürgüFault,related to the M_(W) 7.5 earthquake,predominantly experienced shear stress.However,their western sections experienced a combination of strike-slip and tensile stresses in addition to shear stress.The ruptures of the M_(W) 7.8 and M_(W) 7.5 earthquakes appear to have bridged a seismic gap that had seen sparse seismicity over the past 200 years prior to the 2023 Turkey earthquake sequence.
文摘Shape irregularity,a sub-factor of parcel fragmentation is a problem that hinders sustainable agriculture and is solved using land consolidation projects.Determination of the parcel shape degree contributes significantly to spatial prioritization where there is also a high probability of achieving positive effects of consolidation projects.This study aims to determine the shape degree of the agricultural parcels both at singular and rural county scales in Tekirdag Province,Turkey in 2020 by combining the parcel shape index(PSI) with the minimum bounding geometry index(MBG) to improve parcel scores.Hot-spot zones of the highly irregular and near optimum parcels were also determined using Getis-Ord G_(i)^(*) statistic.The parcel degrees were classified into four categories,namely highly irregular,irregular,regular and near optimum.The obtained unweighted scores of the parameters exhibit deviations from the expected values.After weighting by pairwise comparison,the values approached ideal scores.Among 346 740 parcels,53% were highly irregular and irregular and 47% were regular and near optimum shapes after weighting whereas these were 70% and 30%,respectively before weighting.The average parcel degree of 63 rural counties was regular while the average parcel degree of the remaining 264 rural counties was irregular.The combined use of PSI and MBG index improved the correctness of the parcel shape score.It could be suggested to use as a tool in land consolidation prioritization.
文摘The post-collisional Cenozoic basic volcanic rocks in NE Turkey show temporal variations in whole-rock lithophile element and highly siderophile element(HSE)systematics that are mainly associated with the nature of sub-continental lithospheric mantle(SCLM)sources and parental melt generation.So far,the traditional whole-rock lithophile geochemical data of these basic volcanic rocks have provided important constraints on the nature of SCLM sources.Integrated lithophile element and HSE geochemical data of these basic volcanic rocks also reveal the heterogeneity of the SCLM source,which is principally related to variable metasomatism resulting from previous subduction(s)and post-collisional mantle-crust interactions in an extensional setting.Lithophile element geochemical features suggest that the parental magmas have derived from metasomatized spinel-to garnet-bearing SCLM sources for Eocene and Miocene basic volcanic rocks with subduction signatures whereas originated from spinel-to garnet-bearing SCLM sources for Mio-Pliocene and Plio-Quaternary basaltic volcanic rocks without the subduction signature.Lithophile element and HSE geo-chemistry also reveal that Eocene and Miocene basic vol-canic rocks were affected by more pronounced crustal contamination than the basaltic volcanic rocks of Mio-Pliocene and Quaternary.Furthermore,the integrated lithophile element and HSE compositions of these basic volcanic rocks,together with the regional asymmetric lithospheric delamination model,reveal that the compositional variation(especially due to metasomatism)was significant temporally in the heterogeneity of the SCLM sources from which parental magmas formed during the Cenozoic era.
基金funded by the National Natural Science Foundation of China (Grant Nos.U1939205,41974095)the Basic Research Fund of the Institute of Geophysics,China Earthquake Administration (Grant Nos.DQJB21R30)。
文摘On February 6, 2023, the doublet earthquake including two main shocks with magnitudes M_(W)7.8 and M_(W)7.5, occurred near the western side of the East Anatolian Fault at the southeast boundary of the Anatolian Plateau in Turkey. Based on the WGM2012 Bouguer gravity anomaly data and the Etopo1topography data, this study first introduced a joint inversion of admittance and coherence functions and used the Bayesian optimal parameter estimation method to obtain the effective elastic thickness Teand loading ratio F of the lithosphere for various tectonic units in the Anatolian Plateau. Secondly, we discussed the characteristics and influencing factors of the lithospheric mechanical strength and analyzed its relationship with seismic activity. The lithospheric mechanical strength of the Anatolian Plateau showed clear lateral heterogeneity and a "weak-strong-weak" spatial pattern from east to west,reflecting various tectonic processes. At last, the strong seismic activity was found where the lithospheric strength was low in the Anatolian Plate. We also incorporated GPS strain rate and other results to investigate the tectonic background and primary causes of the M_(W)7.8 and M_(W)7.5 doublet earthquakes in Turkey. The results have a good insight into urban safety design in the Turkish region, including postdisaster rehabilitation, earthquake hazard assessment, and loss reduction.
文摘This article’s primary objective is to answer the question of what is the semantic language of identity and interests of Turkey and Georgia?In addition,it analyzes the connotative quotes that exchanged between the two countries during diplomatic visits.Because the article concentrated on the remarks that were stressed during visits and meetings that took place between the years 2002 and 2022,it was necessary to search through 150 news on civil.ge site and filter down to 35 news before applying the content analysis.The AntConc corpus analysis was used in order to comprehend the nature of the political conversation between both countries.According to the findings,the constructivism of core theme that claim states view each other via the identity through interaction was verified.The purpose of the research is to provide a contribution to the study of the identities and interests of Georgia and Turkey who are good neighbors.
文摘Recently,China and Turkey have been actively promoting the synergy between the Belt and Road Initiative and Turkey’s“Middle Corridor”Initiative.The“Guangxi’s Connecting with Five Continents(Asia-Europe)”China(Guangxi)-Turkey Economic and Trade Cooperation Promotion Conference jointly hosted by CCPIT’s Guangxi Branch and the Turkish Consulate General in Guangzhou was held in Nanning,with the aim to further expand exchanges and cooperation between Turkey and Guangxi in the economic and trade fields.
文摘Karl Nagalhard(1881-1978),formerly known as KarlNagel,was a German paleobotcist whose ideaniity remainedobscured due to his surname and career change at a rel-atively young age.He was active in paleobotary between1914-1922,then he trcsferred to aother acadenac field;but even so,contirued io study paleobotay throughouthis life.The tife and research of Nagalhard are evaluatedhere as a part of the history of Cenozoic paleobotary inTurkey,including a synopsis of the early coal industry.The first significart accounts with descriptions and iltis-trations on the subject were produced by Unger;Engel-hard and Nagalhard respeciively,emphaszing the sigrificanceof the Germanspeaking Ceritrat Euaropean paleobotaists.Asbeing the youngest anong then,Nagalhard deterninedthree taxa from Agact Fltorula in Istanbul and seven taxafron Yenikoy Florula in Kutalya,and provided vatuableremarks on the biostr atigraphy and paleoervironment inhis publication which is exaniined here for the first timealnost after a century.
基金supported by the National Boron Research Institute (BOREN)the Scientific and Technical Research Council of Turkey (No.105M356)
文摘The Kestelek borate deposit has been the subject of geological and mineralogical research over the last decades, but major and trace element geochemistry of this deposit was first investigated in the present study. A total of 22 samples collected from surface exposures and different depths of deposit in boreholes（e.g., lower, middle and upper） comprise the material of this study. Major, trace and REE element analyses of samples were conducted with ICP-MS and ICP-ES methods. The Kestelek borate deposit of Miocene age was formed in playa lakes in an intermountain closed basin which was developed in volcanically and seismically active areas associated with growth faults and grabens affected the whole Anatolia at the beginning of Paleogene. Only colemanite was found as the borate mineral accompanied in lesser amount by calcite, aragonite, smectite, illite, chlorite, corrensite, heulandite and quartz. In colemanite samples, all major elements, except for Ca, show depletion trends with respect to average of earth crust and andesite. For the trace elements, Li, Cs, Sb, As, Sr and Se are characterized by significantly high concentrations. Evaluation of element concentrations and geochemical characteristics reveal that As, Cs, Sb and Li are of detrital origin, Se together with B and Ca are of non-detrital and Sr is indicative of both detrital and non-detrital origin. REE distributions indicate that at least two different depositional regimes prevail in the environment. Corrensite, a clay mineral forming in lake waters, is derived from volcanism. Negative Ce and positive Eu anomalies are indicative of contribution from hydrothermal solutions and fluids.
文摘In this study, two Satureja L. species from different localities of Turkey （Satureja hortensis L. and Satureja boissieri Hausskn. ex Boiss.） have been studied to determine their taxonomic classification based on chemical characters. For this purpose, aerial parts of the studied taxa were investigated by HS-SPME/GC-MS. 28, 30 and 29 compounds were identified in S. boissieri from Sanhurfa, BingS1 and Malatya accounting from 90.80%, 91.31% and 92.67% of the whole oil, respectively. 26, 30 and 28 compounds were identified in S. hortensis from Adlyaman, Diyarbaklr, Elazl~ accounting from 93.20%, 92.85% and 92.42% of the whole oil, respectively, y-terpinene （30.4%, 26.5% and 32.1%）, carvacrol （26.4%, 25.2% and 23.3%） and p-cymene （10.5%, 13.2% and 10.4%） were determined as main compounds of S. boissieri in Sanhurfa, Bing6l and Malatya species, respectively. Carvacrol （25.0%, 34.1% and 32.1%）, thymol （28.2%, 20.2% and 28.1%） and y-terpinene （10.1%, 11.3% and 9.4%） were found as main constituents of S. hortensis in Adlyaman, Diyarbaklr and Elazl~ samples, respectively. The chemical distributions of the essential oil compounds in the Satureja pattern were discussed in respect to their chemotaxonomy and natural products.
文摘The main purpose of this study was to determine the changes in the water quality of Melendiz and Karasu streams, which recharge the Mamasin dam, and to evaluate its environmental impacts on the dam site that provides drinking water and irrigation demand in Aksaray city in the Central Anatolia of Turkey. The field researches were focused on estimating the main sources of contamination, determining and evaluating the changes in the water quality due to the direct wastewater discharges into the Melendiz and Karasu rivers, which recharge the Mamasin dam sites. During the study, water samples were collected from Melendiz and Karasu stream and Mamasin dam, and then, the physical and chemical analyses of water samples were conducted. The relevant in-situ and laboratory analyses were carried out during the dry and wet seasons. The results of the analyses showed that in term of the surface water quality criteria in terms of NO3-N value of both rivers and dam waters, the water quality is always considered as the 1st class in Melendiz stream, the 2nd class in Karasu stream and the 3rd class in Mamasin dam lake. Whereas, in terms of NO4-N values of both rivers and dam waters, the water quality is always considered as the 1st class in Melendiz stream, the 2nd-3rd class in Karasu stream. The total organic carbon （TOC） range for Karasu river is usually from 20 mg/L to 40 mg/L. The high value of organic matter in the Karasu stream can be explained by the availability of intensive green wetlands around this water resource. Finally, the Ministry of Forest and Water Authority give some suggestions for estimating protection zones of Melendiz stream and Mamasin basin＇s area, such as using the results of environmental tracers to investigate the agricultural contamination, including more sophisticated applications of multiple-tracer analyses to evaluate the travel time of contaminants and estimate the boundary of protection zones.
文摘Known data on the distribution of Alliocera graeca Saunders, 1845 and Ber＆ chalybata （Forster, 1771） in Europe are summarized. A. graeca has been reliable recorded from Albania, Croatia and Greece. B. chalybata has been reliable recorded from Austria, Belgium, Bulgaria, Czech Republic, Denmark, England, Finland, France, Germany, Hungary, Ireland, Italy, Netherlands, Norway, Poland, Roumania, Russia, Slovakia, Sweden, Switzeland. A. graeca and B. chalybata, known as European species, are new records for the Turkish Fauna. In this study, the female ofA. graeca and the female ofB. chalybata are presented and photographs of two species are accompanied. Distribution of these species treated is briefly discussed.
文摘The quartz fabric variation and the operation of slip systems were governed by the deformation flow. A new concept named quartz fabric slip flow pattern is to be considered thourgh this relation. On the other hand, strain path, quartz fabric variation and strain fabric development are inter related events which controlled by the deformation flow pattern. These events and related structures were analyzed in the Kazdag （IDA） stack antiform. The quartz fabric variation and the strain path analysis reveal mainly three distinct tectonic stages. These are initial vertical extrusion tectonic and following horizontal spreading tectonics. The beginning stage vertical extrusion represented by the quartz Y maxima fabric in rounded pattern and constructional strain and lengthening strain facies. The latest stage of the vertical extrusion also represented by the quartz fabric, constructional strain but proximating to plane strain and lengthening-widening strain facies. The vertical extrusions governed by the steeply dipping reverse faulting at the initial stage and then fallowed by the gently dipping thrusting at the latest stage. The flattening deformation was developed during the horizontal spreading stage. Typical incomplete single girdle quartz fabric, flattening type oblate strain and thinning--widening strain facies are characteristic features of the nappe tectonics.
文摘Transportation infrastructure and logistics facilities are partly different in both Turkey and Germany in terms of geographical location, industrial history and economy. The world witnesses the highest logistics performance index score in Germany. Meanwhile, Turkey experiences a promptly development. As Europe＇s largest economy and second most populous nation, Germany leads in developing logistics strategies and services as a key member of the EU＇s economic and political structure. On the other hand, Turkey possesses a strategic location between the continents but conventionally problems in transportation mode sprit and interconnectivity of systems that interfere with ＂hub＂ role for its region and achieve economic benefit. This paper aims to focus on transportation mode sprit and location decision of freight villages in Germany to understand the mind behind success. With this purpose, first section is substantially based on secondary data gathered from Turkish/German Statistical Institutes, Ministries of Transportation and NGO＇s of the sector and academic studies. Finally, the lessons to be taken for Turkey＇s future policies are presented. Results indicate that, the finest detail is hidden behind the railway investments and their connections with other modes for Turkey. Germany＇s logistics workforce and infrastructure is geographically spread all over the country, but in Turkey, unbalanced regional development force country to polarised developed regions in the western part.
文摘Natural gas is one of the key energy resources for Turkey due to fact that 32% of annual primary energy supply and 45% of annual electricity production is obtained from natural gas with also common usage of residential and industrial zones. In this study, the supply security of natural gas was taken into consideration with strategic criteria of energy policy with the SWOT （strengths, weaknesses, opportunities and threats） analysis and the future projection for Turkey. It has been concluded on geopolitics criteria, domestic production and research for resources must be stimulated as high as possible and participation to abroad resources must be implemented.
文摘Nowadays, global warming is a major environmental concern. Climate change is dominating the environmental agendas, especially in developed countries at first, but by now, around the world. Several initiatives have been undertaken to reduce the effect of increasing atmospheric GHGs （greenhouse gasses） concentrations. Emerging carbon emissions trade under the Kyoto Protocol serves to market the carbon quotas among the countries, thus, it helps to increase their level of GNP （gross national product）. Emissions trade is being performed in the voluntary and compliant markets. Increasing interest in emission trade emerged carbon and energy exchanges markets in the world. Turkey is located in the voluntary markets, and organizations buying carbon offset credits in order to achieve their voluntary emission reduction goals. GS （gold standard） and VCS （verified carbon standard） are mainly being used to finance renewable energy projects in Turkey. In the GS, there are 209 projects which are currently in the approval process or in the application, such as wind energy, hydroelectric power plant and biogas energy production. In addition to these, in the VCS, there are 61 projects which are mainly energy industries, in the approval process or in the application. Most environmental issues require long-term plans which include international cooperation, especially climate change. The Kyoto Protocol marks the beginning of a new era to combat global climate change. Voluntary markets are very popular and forty percent of the total global GS projects and around nine percent of VCS projects are implemented in Turkey. These projects are initial steps for future implementations of compliant markets in Turkey.
文摘AIM: To investigate and compare frequencies of serum positive cagA in patients from two separate regions of Turkey who were grouped according to the presence of peptic ulcer disease or non-ulcer dyspepsia.METHODS: One hundred and eighty Helicobacter pyloripositive patients with peptic ulcer disease or non-ulcer dyspepsia were included in the study. One hundred and fourteen patients had non-ulcer dyspepsia and 66 had peptic ulcer disease (32 with gastric ulcers and/or erosions and 34with duodenal ulcers). Each patient was tested for serum antibody to H. pylori cagA protein by enzyme immunoassay.RESULTS: The total frequency of serum positive cagA in the study group was 97.2 %. The rates in the patients with peptic ulcers and in those with non-ulcer dyspepsia were 100% and 95.6%, respectively. These results were similar to those reported in Asian studies, but higher than those that have been noted in other studies from Turkey and Western countries.CONCLUSION: The high rates of serum positive cagA in these patients with peptic ulcer disease and non-ulcer dyspepsia were similar to results reported in Asia. The fact that there was high seroum prevalence regardless of ulcer status suggests that factors other than cagA might be responsible for ulceration or other types of severe pathology in H. pylori-positive individuals.
