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2016

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Ross Allan Webb Papers - Accession 1135, Ross Allan Webb Jan 2016

Ross Allan Webb Papers - Accession 1135, Ross Allan Webb

Manuscript Collection

This collection consists of papers from Dr. Ross A. Webb (1923-2003), Historian Emeritus from Winthrop University. Significant research includes the history of Winthrop College, genealogy of Benjamin Helm Bristow, Webb’s history class notes, and preliminary drafts of his book The Torch is Passed. The files contain documents, commentary, correspondence, and articles describing the founding of Winthrop, its move from Columbia to Rock Hill, Founders Day, its coat of arms, an annual chronology of growth, the presidents, traditions, student life, campus activities, course curriculum, Board of Trustees records, administration & faculty, distinguished alumni, library services, athletics, organizations, publications, introduction of …

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Eleanor Burts Collection - Accession 845, Eleanor Norris Burts Jan 2016

Eleanor Burts Collection - Accession 845, Eleanor Norris Burts

Manuscript Collection

The Eleanor Burts Collection consists of children themed books, artifacts, artwork, posters, puzzles, and other miscellaneous items that were collected by Eleanor Norris Burts (1916-1998) throughout her life. Eleanor Burts was a 1937 graduate of Winthrop College and lifelong educator. She was an avid collector of artifacts, artwork, and mainly books related to children and amassed a very large collection of materials that date back to the 1700s.

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Late Quaternary Chronostratigraphy Of The Aegean Sea Sediments: Special Reference To The Ages Of Sapropels S1?S5, Ekrem Bursi̇n İşler, Richard Nicholas Hiscott, Ali̇ Engi̇n Aksu Jan 2016

Late Quaternary Chronostratigraphy Of The Aegean Sea Sediments: Special Reference To The Ages Of Sapropels S1?S5, Ekrem Bursi̇n İşler, Richard Nicholas Hiscott, Ali̇ Engi̇n Aksu

Turkish Journal of Earth Sciences

Four sapropel layers (S1, S3, S4, and S5) are identified in five 6-10-m-long piston cores collected from the Aegean Sea basins. A chronostratigraphic framework is established for the last ~130 ka using benthic and planktonic foraminiferal oxygen isotope curves, total organic carbon contents, volcanic ash layers, and limited radiocarbon dates. These data show that the onsets of sapropels S3, S4, and S5 in the Aegean Sea basins were not synchronous, highlighting the heterogeneity of the Aegean Sea basins in terms of rapid versus lagged responses to changing ocean-climate boundary conditions. In all cases, however, the development of sapropels S3, S4, …

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Upper Cenomanian-Lower Campanian Derdere And Karababa Formations In The Çemberlitaş Oil Field, Southeastern Turkey: Their Microfacies Analyses, Depositional Environments, And Sequence Stratigraphy, Oğuz Mülayi̇m, Ernest Mancini, İbrahi̇m Çemen, İsmai̇l Ömer Yilmaz Jan 2016

Upper Cenomanian-Lower Campanian Derdere And Karababa Formations In The Çemberlitaş Oil Field, Southeastern Turkey: Their Microfacies Analyses, Depositional Environments, And Sequence Stratigraphy, Oğuz Mülayi̇m, Ernest Mancini, İbrahi̇m Çemen, İsmai̇l Ömer Yilmaz

Turkish Journal of Earth Sciences

The frontal belt of the southeastern Anatolia fold-thrust belt in Turkey contains several small to mid-size oilfields, producing from carbonate reservoirs of the Cretaceous Mardin group. Many of these fields are found along narrow, asymmetrical anticlinal structures, associated with the formation of the fold-thrust belt. The Çemberlitaş oil field in Adıyaman, southeastern Turkey, is one of the most important oilfields in the region. It produces from the Upper Cretaceous Derdere and Karababa formations of the Mardin group. We have conducted a detailed study of the microfacies, depositional environments, and sequence stratigraphy of the Karababa (Coniacian-lower Campanian) and Derdere (mid-Cenomanian-Turonian) formations …

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Tracking The Uplift Of The Bolkar Mountains (South-Central Turkey): Evidence From Apatite Fission Track Thermochronology, Fati̇h Karaoğlan Jan 2016

Tracking The Uplift Of The Bolkar Mountains (South-Central Turkey): Evidence From Apatite Fission Track Thermochronology, Fati̇h Karaoğlan

Turkish Journal of Earth Sciences

Apatite fission track (AFT) thermochronology is applied to the Horozköy granitoid, which outcrops within the Bolkar Mountains (south-central Turkey). The region comprises the Niğde Massif to the north, the Inner Tauride Suture Zone, and the Central Taurides to the south. The Niğde Massif and the Central Taurides collided during the Eocene following north-dipping subduction of the Inner Tauride Ocean beneath the Niğde Massif. The Ulukışla Basin formed above this suture zone. The AFT ages range between 23 and 16 Ma, although there was no significant uplift or exhumation during this period. During the Oligo-Miocene, the region experienced a slow uplift …

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Quartz-Mica Schist And Gneiss Hosted Clay Deposits Within The Yenipazar(Yozgat, Central Anatolia) Volcanogenic Massive Sulfide Ore, Şih Ali̇ Sayin Jan 2016

Quartz-Mica Schist And Gneiss Hosted Clay Deposits Within The Yenipazar(Yozgat, Central Anatolia) Volcanogenic Massive Sulfide Ore, Şih Ali̇ Sayin

Turkish Journal of Earth Sciences

The Yenipazar deposit of volcanogenic sulfide occurrence, situated approximately 9 km SW of Yenipazar, is hosted in quartz-muscovite schists and gneiss. Following the Late Cretaceous, the quartz-mica schists and gneiss have been altered to clay minerals, resulting in important kaolin deposits. The clay deposits consist mainly of halloysite, kaolinite, smectite, illite, muscovite, chlorite, and α-quartz. Biotite, alunite, jarosite, pyrite, hematite, calcite, low cristobalite, and feldspar are present in minor amounts. In places, some mixed-layer clays, such as kaolinite/smectite and smectite/illite, are also observed within the clay deposits. Barite is present in a few clay samples. α-Quartz is the dominant silica …

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Geochemistry Of Proterozoic Clastic Rocks Of The Kerur Formation Of Kaladgi-Badami Basin, North Karnataka, South India: Implications For Paleoweathering And Provenance, Ariputhiran Ramachandran, Jayagopal Madhavaraju, Sooriamuthu Ramasamy, Yong Il Lee, Sesha Rao, David Lalhmingliana Chawngthu, Kasilingam Velmurugan Jan 2016

Geochemistry Of Proterozoic Clastic Rocks Of The Kerur Formation Of Kaladgi-Badami Basin, North Karnataka, South India: Implications For Paleoweathering And Provenance, Ariputhiran Ramachandran, Jayagopal Madhavaraju, Sooriamuthu Ramasamy, Yong Il Lee, Sesha Rao, David Lalhmingliana Chawngthu, Kasilingam Velmurugan

Turkish Journal of Earth Sciences

Major, trace, and rare earth element (REE) studies have been conducted on the Proterozoic clastic rocks of the Kerur Formation of the Kaladgi-Badami Basin, South India, to determine their paleoweathering conditions and provenance characteristics. Geochemically, these sedimentary rocks are classified as quartz arenite, arkose, litharenite, and sublitharenite. The chemical index of alteration values and the A-CN-K diagram suggest that the clastics rocks in this study underwent moderate to intensive weathering. Chondrite-normalized REE patterns with light REE enrichment, flat heavy REE, and a negative Eu anomaly also attribute felsic source-rock to sedimentary rocks of the Kerur Formation. In addition, Eu/Eu* (~0.77), …

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Nummulitic Facies Of The Crimean-Caucasian Region, Ekaterina A. Lygina, Pavel A. Fokin, Ludmila F. Kopaevich, Anatoly M. Nikishin, Elena V. Yakovishina Jan 2016

Nummulitic Facies Of The Crimean-Caucasian Region, Ekaterina A. Lygina, Pavel A. Fokin, Ludmila F. Kopaevich, Anatoly M. Nikishin, Elena V. Yakovishina

Turkish Journal of Earth Sciences

The nummulitic limestones of Crimea and the southwestern Caucasus, often interpreted as "nummulite banks", formed carbonate platforms throughout most of the Ypresian-Lutetian. Such deposits were accumulated in shallow warm-water basins of Crimea and the Caucasus, which differed from each other by the structure of the basement and the hydrodynamic regime. The Crimean carbonate platform was relatively flat and was formed mainly within quiet hydrodynamic conditions below the fair-weather wave base (less than 50 m). The facies changes within it reflect variations in water depth. Facies distinguished there form the nummulite bank, its lee-side slope, the shelf plain in the rear …

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Geological, Geochemical, And Fluid Inclusion Evidences For The Origin Of The Ravanj Pb?Ba?Ag Deposit, North Of Delijan City, Markazi Province, Iran, Mostafa Nejadhadad, Batoul Taghipour, Alireza Zarasvandi, Alireza Karimzadeh Somarin Jan 2016

Geological, Geochemical, And Fluid Inclusion Evidences For The Origin Of The Ravanj Pb?Ba?Ag Deposit, North Of Delijan City, Markazi Province, Iran, Mostafa Nejadhadad, Batoul Taghipour, Alireza Zarasvandi, Alireza Karimzadeh Somarin

Turkish Journal of Earth Sciences

The Lower Cretaceous sequences of the Ravanj anticline in Iran host the Ravanj Pb-Ba-Ag mineralization. Economic orebodies are restricted to the thrust zone within the brecciated massive limestone and immediately above the Jurassic shale and/or shale-limestone intercalations of the Lower Cretaceous. Paragenetic sequence and distinct zoning of mineral assemblages indicate that ore-forming fluid migrated through thrust zones along the NE-trending faults. The REE pattern of mineralized host rock is characterized by HREE-enrichment ((La/Lu)PAAS = 0.24). The Ce/Ce* ratio of mineralized host samples shows negative Ce anomalies, which is most likely inherited from seawater. The positive Eu/Eu* anomaly suggests high ?O2 …

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Notes On Beyrichiacean Ostracodes From The Early Devonian Of Nw Turkey Andtheir Palaeobiogeographical Relations, Ati̇ke Nazi̇k, Helga Groos-Uffenorde Jan 2016

Notes On Beyrichiacean Ostracodes From The Early Devonian Of Nw Turkey Andtheir Palaeobiogeographical Relations, Ati̇ke Nazi̇k, Helga Groos-Uffenorde

Turkish Journal of Earth Sciences

Recently found materials of large beyrichiacean ostracodes from the Early Devonian of the Darlık, Korucuköy, and Kabalakdere sections in NW Anatolia stimulated the restudy of ostracode collections from the İstanbul area, including the Toula collection (GBA Vienna) and Endriss collection (previously in GPI Marburg and currently in SMF Frankfurt), and their biostratigraphical and palaeogeographical significance. The species Gibba kayseri, Gibba schmidti, Zygobeyrichia roemeri, Zygobeyrichia subcylindrica, and Zygobeyrichia onusta are documented and beyrichiid gen. et sp. indet. is described. There are great similarities with ostracode faunas from Early Devonian shallow-water sediments of Europe and North Africa (in Germany from the Rhenish …

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Comparison Between Natural Radioactivity Levels Andgeochemistry Of Some Granitoids In Western Turkey, Si̇bel Tatar Erkül, Süleyman Fati̇h Özmen, Fuat Erkül, İsmai̇l Boztosun Jan 2016

Comparison Between Natural Radioactivity Levels Andgeochemistry Of Some Granitoids In Western Turkey, Si̇bel Tatar Erkül, Süleyman Fati̇h Özmen, Fuat Erkül, İsmai̇l Boztosun

Turkish Journal of Earth Sciences

Granitoids commonly include K-feldspar, biotite and zircon, apatite, titanite, allanite, and xenotime crystals, which are known to contain common radioactive elements. Radioactive isotopes of 40K, 238U, and 232Th can be harmful to human health with increasing dosage and their quantification should be well defined to assess the suitability of wall-rock granitoids for indoor and outdoor purposes. In this study, it is aimed to correlate the possible relationship between concentrations of natural radionuclides and SiO2, Na2O, K2O, and CaO together with elements U, Th, Zr, Y, Ba, Rb, and Sr to provide a basic approach to the compatibility of geochemical data …

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The New Empirical Magnitude Conversion Relations Using An Improved Earthquake Catalogue For Turkey And Its Near Vicinity (1900-2012), Fi̇li̇z Tuba Kadi̇ri̇oğlu, Recai̇ Feyi̇z Kartal Jan 2016

The New Empirical Magnitude Conversion Relations Using An Improved Earthquake Catalogue For Turkey And Its Near Vicinity (1900-2012), Fi̇li̇z Tuba Kadi̇ri̇oğlu, Recai̇ Feyi̇z Kartal

Turkish Journal of Earth Sciences

Empirical magnitude conversion relationships are one of the important parameters for not only seismological studies but also seismic hazard analysis and development of the attenuation relationships. Particularly, for seismic hazard analysis, conversion of various types of magnitudes to moment magnitude, which is the most reliable and common magnitude scale, is a key requirement. Within this scope, different magnitude conversion equations have been derived by various researchers in the literature. In this study, new empirical magnitude conversion formulas for conversion from mb, ML, Md, and MS to Mw were derived by using a recently established earthquake catalogue. The most important feature …

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Assimilation And Fractional Crystallization Of Foid-Bearing Alkaline Rocks:Buzlukdağ Intrusives, Central Anatolia, Turkey, Kiymet Deni̇z, Yusuf Kağan Kadioğlu Jan 2016

Assimilation And Fractional Crystallization Of Foid-Bearing Alkaline Rocks:Buzlukdağ Intrusives, Central Anatolia, Turkey, Kiymet Deni̇z, Yusuf Kağan Kadioğlu

Turkish Journal of Earth Sciences

Felsic intrusive rocks within the Central Anatolian Crystalline Complex provide a window into the geodynamic processes in operation during the final closure of the Neotethys Ocean. Previous studies were largely restricted to the calc-alkaline granitoids, and the structural and petrogenetic relations of syenitoids are poorly studied. The Buzlukdağ Intrusive Complex is a silica-undersaturated alkaline syenite that is differentiated into three concentric subgroups according to texture and grain size. Mineral compositions do not vary between the subgroups but differentiation has resulted in different mineral proportions. Mafic microgranular enclaves are present throughout the suite, indicating mingling and mixing between the coeval felsic …

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Mineralogy, Geochemistry, And Depositional Environment Of The Beduh Shale(Lower Triassic), Northern Thrust Zone, Iraq, Faraj Tobia, Sirwa Shangola Jan 2016

Mineralogy, Geochemistry, And Depositional Environment Of The Beduh Shale(Lower Triassic), Northern Thrust Zone, Iraq, Faraj Tobia, Sirwa Shangola

Turkish Journal of Earth Sciences

Integrated mineralogical and geochemical methods are utilized to investigate the provenance, paleoweathering, and depositional setting of shale from the Lower Triassic Beduh Formation in the Northern Thrust Zone, Iraq. The ~64-m-thick Beduh Formation consists of calcareous shale and marl intercalations with thin calcareous sandstone interbeds. X-ray diffraction analysis revealed that clay minerals comprise illite, kaolinite, and chlorite, with a minor mixed layer of illite/smectite and illite/chlorite. Calcite and quartz are the main nonclay species with subordinate amounts of feldspar and hematite. The mineralogical and geochemical parameters of the shale (e.g., high content of illite and moderate illite crystallinity index, Al2O3/TiO2, …

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Mineral Chemistry Of Igneous Rocks In The Lar Cu-Mo Prospect, Southeastern Part Of Iran: Implications For P, T, And ƒO2, Rahele Moradi, Mohammad Boomeri, Sasan Bagheri, Kazuo Nakashima Jan 2016

Mineral Chemistry Of Igneous Rocks In The Lar Cu-Mo Prospect, Southeastern Part Of Iran: Implications For P, T, And ƒO2, Rahele Moradi, Mohammad Boomeri, Sasan Bagheri, Kazuo Nakashima

Turkish Journal of Earth Sciences

The Lar Cu-Mo prospect is located 20 km north of Zahedan in Sistan and Baluchestan Province. This area is geologically situated in the Sistan Suture Zone. The Cu-Mo mineralization occurs as silicic veins in the Lar igneous rocks and includes hypogene chalcopyrite, bornite, and molybdenite mineralization. The syenite to monzonite host rocks occur as stock and dyke and display granular to porphyritic texture. In this study, mineral chemistry and petrographic examination of igneous rocks are used to constrain the crystallization conditions of the magma. The compositional range of plagioclase is relatively narrow (0.11%-26.05% An), whereas that of potassium feldspar is …

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Distribution Of Natural Radioactivity And Assessment Of Radioactive Dose Of Western Anatolian Plutons, Turkey, Argyrios Papadopoulos, Şafak Altunkaynak, Antonis Koroneos, Alp Ünal, Ömer Kamaci Jan 2016

Distribution Of Natural Radioactivity And Assessment Of Radioactive Dose Of Western Anatolian Plutons, Turkey, Argyrios Papadopoulos, Şafak Altunkaynak, Antonis Koroneos, Alp Ünal, Ömer Kamaci

Turkish Journal of Earth Sciences

The distribution of 226Ra, 232Th, and 40K in 70 granite samples obtained from 13 Western Anatolian plutons (Turkey) was measured by using γ-ray spectroscopy. The activities of the measured radionuclides varied up to 259 Bq kg-1 for 226Ra, up to 241 Bq kg?1 for 232Th, and up to 2518 Bq kg-1 for 40K, with mean values of 66 (±44), 90 (±47), and 1097 (±410) Bq kg-1, respectively, which are smaller than the mean values given for granites worldwide. The mean value of the increase on the external γ-radiation effective dose rate is 0.21 (±0.09) mSv year-1, varying by <1 mSv year-1. The mean value of the internal α-radiation was 0.15 (±0.10) mSv year-1, varying <0.5 mSv year-1. Most of the samples cause an increase to both the external and internal dose by <30%, which is smaller than the permitted limit. Therefore, there is no radiological risk from the usage of the samples studied as decorative and ornamental building materials.

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A New Pelagic Conodont Taxon Of The Central Pontides (Turkey), Ali̇ Murat Kiliç Jan 2016

A New Pelagic Conodont Taxon Of The Central Pontides (Turkey), Ali̇ Murat Kiliç

Turkish Journal of Earth Sciences

The Hallstatt-type limestones in the Central Pontides yield abundant conodonts of the genus Gladigondolella ranging throughout the entire studied sequence and indicating Anisian to Early Carnian ages. Gladigondolella okayi n. sp. is described.

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Organic Geochemistry And Element Distribution In Coals Formed In Eocene Lagoon Facies From The Eastern Black Sea Region, Ne Turkey, Çi̇ğdem Saydam Eker, İbrahi̇m Akpinar, Ferkan Si̇pahi̇ Jan 2016

Organic Geochemistry And Element Distribution In Coals Formed In Eocene Lagoon Facies From The Eastern Black Sea Region, Ne Turkey, Çi̇ğdem Saydam Eker, İbrahi̇m Akpinar, Ferkan Si̇pahi̇

Turkish Journal of Earth Sciences

The amount and type, the inorganic element content, and the maturity of organic materials of Eocene coals, shaly coals, and coaly shales exposed in the Gümüşhane and Bayburt districts of the Eastern Black Sea Region of Turkey were investigated. The depositional environments and hydrocarbon potentials were also interpreted. The total organic carbon concentrations in the studied samples ranged from 0.50% to 63.08%. The samples from Özyurt, Kayadibi, and Tarhanas contained types II and III kerogen, and those from Sökmen and Manas contained type III kerogen. The samples contained Co, Cs, Ga, Hf, Th, U, Y, Mo, Be, Cd, Sb, and …

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Geochemistry And C, O, And Sr Isotope Composition Of The Föderata Group Metacarbonates (Southern Veporicum, Western Carpathians, Slovakia):Constraints On The Nature Of Protolith And Its Depositional Environment, Marek Vdacny, Peter Ruzicka, Anna Vozarova Jan 2016

Geochemistry And C, O, And Sr Isotope Composition Of The Föderata Group Metacarbonates (Southern Veporicum, Western Carpathians, Slovakia):Constraints On The Nature Of Protolith And Its Depositional Environment, Marek Vdacny, Peter Ruzicka, Anna Vozarova

Turkish Journal of Earth Sciences

Major, trace, and rare earth element as well as C, O, and Sr isotope geochemistry is used to provide new insights into the characteristics and depositional environment of the protolith of the Föderata Group metacarbonates in the southern Veporicum cover sequence (Western Carpathians, Slovakia). The metacarbonates are characterized by high LOI and CaO and by small contents of various insoluble components. Among the trace elements investigated, only As, Ba, Co, Cu, Hg, Nb, Ni, Pb, Rb, Sb, Sr, Th, U, Y, Zn, and Zr display concentrations beyond their detection limits. The metacarbonates are strongly depleted in Rb, Ba, Th, Nb, …

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Geochemical Characterization And Palynological Studies Of Some Agbada Formation Deposits Of The Niger Delta Basin: Implications For Paleodepositional Environments, Olajide Femi Adebayo, Segun Ajayi Akinyemi, Henry Yemagu Madukwe, Adeyinka Oluyemi Aturamu, Adebayo Olufemi Ojo Jan 2016

Geochemical Characterization And Palynological Studies Of Some Agbada Formation Deposits Of The Niger Delta Basin: Implications For Paleodepositional Environments, Olajide Femi Adebayo, Segun Ajayi Akinyemi, Henry Yemagu Madukwe, Adeyinka Oluyemi Aturamu, Adebayo Olufemi Ojo

Turkish Journal of Earth Sciences

Forty-two ditch cutting samples of the KR-1 offshore well from depths of 9660 ft to 10,920 ft composited at 90-ft intervals were subjected to sedimentological, micropaleontological, and geochemical analyses using standard procedures and the laser ablation-induced coupled plasma mass spectrometry technique, respectively. Sedimentological analysis revealed the presence of glauconites and the rare occurrence of framboidal pyrites, indicative of deposition in a slightly anoxic marine environment. Palynomorph percentage distribution shows that there are more terrestrially derived miospores (dominated by Zonocostites ramonae (Rhizophora spp.), Psilatricolporites crassus (Tabernaemontana crassa), Acrotichum aureum, and Laevigatosporites sp.) than marine phytoplanktons. Rare occurrence of Globoquadrina venezuelana, Globigerinoides …

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Clay Mineralogy And Geochemistry Of Three Offshore Wells In The Southwestern Black Sea, Northern Turkey: The Effect Of Burial Diagenesis On The Conversion Of Smectite To Illite, Yi̇nal Neşes Huvaj, Warren D. Huff Jan 2016

Clay Mineralogy And Geochemistry Of Three Offshore Wells In The Southwestern Black Sea, Northern Turkey: The Effect Of Burial Diagenesis On The Conversion Of Smectite To Illite, Yi̇nal Neşes Huvaj, Warren D. Huff

Turkish Journal of Earth Sciences

The conversion of smectite to illite has long been studied by numerous researchers because of its importance as a diagenetic metric. Interpreting the pressure, temperature, and age of the sequences in which this conversion occurs provides the possibility to identify the historical maturation parameters of hydrocarbon sources. The Black Sea Basin is known to be an area that can provide source rocks for oil and gas production. The purpose of this study was to determine the clay minerals and their abundances, to establish a stratigraphic correlation among three wells, which is useful to select specific stratigraphic horizons for hydrocarbon exploration, …

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Monitoring Voip Speech Quality For Chopped And Clipped Speech, Andrew Hines, Jan Skoglund, Anil C. Kokaram, Naomi Harte Jan 2016

Monitoring Voip Speech Quality For Chopped And Clipped Speech, Andrew Hines, Jan Skoglund, Anil C. Kokaram, Naomi Harte

Articles

No abstract provided.

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A New Educational Mobile Devices Platform For Social Inclusion In Tanzania, Fredrick Mtenzi Jan 2016

A New Educational Mobile Devices Platform For Social Inclusion In Tanzania, Fredrick Mtenzi

Articles

Abstract— It is evident that advances in technology has led to improvement in societal wellbeing. In this paper we demonstrate how mobile phones are used in providing reliable and quality education to students in disadvantaged areas of Tanzania. The main contribution is on leveraging on the success that Tanzania has had on using mobile banking to the un-banked population. These lessons are adapted to the education sector, where clever/smart integration of existing disruptive technologies such as mobile phones and social networks are be used to provide access to high quality educational contents. Further, the paper shows how educational content can …

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Face Recognition-Based Real-Time System For Surveillance, Fahad Parvez Mahdi, Md. Mahmudul Habib, Susan Mckeever, A.S.M. Moslehuddin, Pandian Vasant Jan 2016

Face Recognition-Based Real-Time System For Surveillance, Fahad Parvez Mahdi, Md. Mahmudul Habib, Susan Mckeever, A.S.M. Moslehuddin, Pandian Vasant

Articles

The ability to automatically recognize human faces based on dynamic facial images is important in security, surveillance and the health/independent living domains. Specific applications include access control to secure environments, identification of individuals at a particular place and intruder detection. This research proposes a real-time system for surveillance using cameras. The process is broken into two steps: (1) face detection and (2) face recognition to identify particular persons. For the first step, the system tracks and selects the faces of the detected persons. An efficient recognition algorithm is then used to recognize detected faces with a known database. The proposed …

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Synthetic Protocols On 6$H$-Benzo[$C$]Chromen-6-Ones: A Review, Ofentse Mazimba Jan 2016

Synthetic Protocols On 6$H$-Benzo[$C$]Chromen-6-Ones: A Review, Ofentse Mazimba

Turkish Journal of Chemistry

6$H$-Benzo[$c$]chromen-6-ones serve as core structures of secondary metabolites and are of considerable pharmacological importance. Natural sources produce limited quantities, hence the need for synthetic procedures for 6$H$-benzo[$c$]chromen-6-ones, which are herein reviewed. The literature describes protocols such as the Suzuki coupling reactions for the synthesis of biaryl, which then undergoes lactonization, reactions of 3-formylcoumarin (chromenones) with 1,3-bis(silylenol ethers), radical mediated cyclization of arylbenzoates, metal or base catalyzed cyclization of phenyl-2-halobenzoates and 2-halobenzyloxyphenols, and benzoic acid coupling with benzoquinone using electrophilic metal-based catalyst. The efficient and simple procedures are those involving the reactions of Michael acceptor (chromenones and chalcones) with 1,3- and …

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Characterization And Photocatalytic Properties Of Tio$_{2}$/Chitosan Nanocomposites Synthesized By Hydrothermal Process, Funda Okuşluk, Fatma Bi̇lge Emre Jan 2016

Characterization And Photocatalytic Properties Of Tio$_{2}$/Chitosan Nanocomposites Synthesized By Hydrothermal Process, Funda Okuşluk, Fatma Bi̇lge Emre

Turkish Journal of Chemistry

Nanocomposites of TiO$_{2}$/chitosan (nTC) were synthesized by hydrothermal process at 200 $^{\circ}$C. Photocatalytic activity of the nanocomposites was studied with degradation of malachite green (MG) in aqueous medium. Structural and physico-chemical properties of the obtained nanocomposites were characterized by XRD, SEM, BET, FTIR, and particle size analyzer. Complete photodegradation of MG was successfully achieved with the aid of the nanocomposites. The optimum photocatalytic degradation conditions, irradiation time, irradiation power, and amount of catalyst were studied. Photocatalytic activity of the synthesized nanocomposites in terms of degradation of MG was compared with that of undoped TiO$_{2}$ (synthesized by our team) and chitosan …

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Synthesis And Evaluation Of A Novel N--P-Containing Oil-Based Fire-Retardant Plasticizer For Poly(Vinyl Chloride), Pu-You Jia, Guo-Dong Feng, Yun Hu, Yong-Hong Zhou Jan 2016

Synthesis And Evaluation Of A Novel N--P-Containing Oil-Based Fire-Retardant Plasticizer For Poly(Vinyl Chloride), Pu-You Jia, Guo-Dong Feng, Yun Hu, Yong-Hong Zhou

Turkish Journal of Chemistry

A novel N--P-containing soybean-oil-based fire-retardant plasticizer was synthesized using soybean oil methyl ester, 9,10-dihydro-9-oxa-phosphaphenanthrene-10-oxide (DOPO), and tris(2-hydroxyethyl) isocyanurate (THEIC). The structure was verified by Fourier transform infrared (FTIR) spectrometry and nuclear magnetic resonance (NMR) spectroscopy. The blends were characterized by thermogravimetric analysis (TGA), FTIR spectrometry, scanning electron microscopy (SEM), and dynamic mechanical analysis (DMA). TGA showed that the thermal stability of the blends were acceptable. DMA indicated that the plasticizer had good plasticity for PVC. The limiting oxygen index (LOI) of the blends ranged from 21.3 to 29.6. The flammability and thermal stability of PVC/THEIC-DOPO-ESOME was better than that of …

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Comparative Study For The Separation, Preconcentration, And Determination Of Copper And Cadmium In Real Samples By Using Two Different Ligands, Hami̇de Elvan Bayrak, Volkan Numan Bulut, Mehmet Tüfekçi̇, Hacer Bayrak, Celal Duran, Mustafa Soylak Jan 2016

Comparative Study For The Separation, Preconcentration, And Determination Of Copper And Cadmium In Real Samples By Using Two Different Ligands, Hami̇de Elvan Bayrak, Volkan Numan Bulut, Mehmet Tüfekçi̇, Hacer Bayrak, Celal Duran, Mustafa Soylak

Turkish Journal of Chemistry

Two new solid phase extraction methods have been developed for simultaneous separation and preconcentration of Cu(II) and Cd(II) in some food and environmental samples before their determination by flame atomic absorption spectrometry (FAAS). One of these methods is based on the absorption of the Cu(II) and Cd(II) complexes with [3-(cyanomethyl)-5-(4-methylphenyl)-4$H$-1,2,4-triazol-4-yl]carbamate (L1) and the other is based on the absorption of the Cu(II) and Cd(II) complexes with 4-(4-methylphenyl)-5-{[pyridine-4-yl-4$H$-1,2,4-triazole-3-yl)thio]methyl}-4$H$-1,2,4-triazole-3-thiol (L2) on Amberlite XAD-1180 resin. The metal complexes are retained on resin at pH 6.0 and eluted with 1.0 mol L$^{-1}$ HCl in acetone in both methods. After the optimum conditions were determined, …

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Square Wave Voltammetric Determination Of Valproic Acid In Pharmaceutical Preparations, Ebru Türköz Acar, Ati̇ye Nur Onar Jan 2016

Square Wave Voltammetric Determination Of Valproic Acid In Pharmaceutical Preparations, Ebru Türköz Acar, Ati̇ye Nur Onar

Turkish Journal of Chemistry

The electrochemical behavior of valproic acid (VAL) was investigated using square wave voltammetry, cyclic voltammetry, and sampled direct current polarography and a new square wave voltammetric method was developed for determination of VAL in pharmaceutical preparations. VAL showed two reduction peaks at about --0.2 V and --0.8 V vs. Ag/AgCl 3 M KCl with a hanging mercury drop electrode in 0.05 M pH 3.3 Britton--Robinson (BR) buffer. These peaks were named peak I and peak II, respectively. The types of limiting current of both peaks were determined as diffusion controlled based on cyclic voltammetry studies. A linear calibration graph was …

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Durability Of Carbon/Conducting Polymer Composite Supported Pt Catalysts Prepared By Supercritical Carbon Dioxide Deposition, Gamze Bozkurt, Fulya Memi̇oğlu, Ayşe Bayrakçeken Yurtcan Jan 2016

Durability Of Carbon/Conducting Polymer Composite Supported Pt Catalysts Prepared By Supercritical Carbon Dioxide Deposition, Gamze Bozkurt, Fulya Memi̇oğlu, Ayşe Bayrakçeken Yurtcan

Turkish Journal of Chemistry

Polypyrrole (PPy)/carbon (C) composites were synthesized by oxidative chemical polymerization and used as support material for Pt nanoparticles. PPy/C supported Pt nanoparticles were prepared by using a promising catalyst preparation method, supercritical carbon dioxide (scCO$_{2})$ deposition. The prepared materials were characterized by using BET, TGA, XRD, and TEM techniques. Cyclic voltammetry was used in order to determine the electrocatalytic activity of the prepared catalyst for hydrogen oxidation and oxygen reduction reactions that occur in proton exchange membrane fuel cells (PEMFCs). The Pt loading obtained over the composite material was around 10{\%}. TEM results showed highly dispersed and small nanoparticles over …

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