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Late Pleistocene human genome suggests a local origin for the first farmers of central Anatolia

Feldman M. | Fernández-Domínguez E. | Reynolds L. | Baird D. | Pearson J. | Hershkovitz I. | May H.

Article | 2019 | Nature Communications10 ( 1 )

Anatolia was home to some of the earliest farming communities. It has been long debated whether a migration of farming groups introduced agriculture to central Anatolia. Here, we report the first genome-wide data from a 15,000-year-old Anatolian hunter-gatherer and from seven Anatolian and Levantine early farmers. We find high genetic continuity (~80–90%) between the hunter-gatherers and early farmers of Anatolia and detect two distinct incoming ancestries: an early Iranian/Caucasus related one and a later one linked to the ancient Levant. Finally, we observe a genetic link between southern Europe and the Near East predating 15,000 . . .years ago. Our results suggest a limited role of human migration in the emergence of agriculture in central Anatolia. © 2019, The Author(s) Daha fazlası Daha az

Evaluation of 3D Nonlinear Earthquake Behaviour of the Ilsu CFR Dam under Far-Fault Ground Motions

Karalar, Memduh | Cavusli, Murat


In the recent times, many huge concrete face rockfill dams (CFRDs) have been modelled and constructed in the world, and many of these dams are located on the strong earthquake zones. Examination of the seismic behaviour of a CFR dam built on the seismic zone is very important to assess the safety and future of the dam. For this reason, the nonlinear earthquake behaviour of these dams should be constantly observed taking into account the seismicity of the zone. In this study, three-dimensional (3D) seismic behaviour of the Ilsu dam built on the East Anatolian Fault (EAF) line is examined considering the effect of the important variou . . .s far-fault earthquakes. The 3D finite difference model of the Ilsu dam is created using the FLAC3D software based on the finite difference method. The dam body, foundation, and concrete slab constantly interact during the lifetime of the CFRDs. Therefore, the special interface elements are defined between the dam body, concrete slab, and foundation to represent the interaction condition. The Mohr-Coulomb nonlinear material model is used for the rockfill materials and foundation. Moreover, the concrete slab is modelled considering the Drucker-Prager nonlinear material model to represent the nonlinearity of the concrete. Very special seismic boundary conditions rarely used for CFR dams in the past are used in this work. These boundary conditions are free-field and quiet boundary conditions. The free-field boundary condition that is a very important boundary condition for the nonlinear seismic analyses is considered for the lateral boundaries of the 3D model. In addition, the quiet artificial boundary condition is used for the bottom of the foundation. While defining these boundary conditions, the special fish functions are created and defined to the software. Moreover, the hysteric damping coefficients are separately calculated for all of the materials. These special damping values are defined to the FLAC3D software using the special fish functions to capture the effects of the variation of the modulus and damping ratio with the dynamic shear-strain magnitude. In the numerical analyses, a total of 7 various strong far-fault earthquakes are used for the 3D nonlinear earthquake analyses, and 7 different numerical analyses are performed for the full-reservoir condition of the Ilsu CFR dam. According to the seismic results, the principal stresses for the three critical nodal points on the dam body surface are examined and evaluated in detail. It is clearly understood that the nonlinear seismic behaviour of the Ilsu dam changes depending on the magnitudes and periods of the far-fault earthquakes. Each far-fault earthquake has different seismic effects on the nonlinear principal stress behaviour of the Ilsu CFR dam Daha fazlası Daha az

Incidence of falls among community-dwelling older adults in Turkey and its relationship with pain and insomnia

Kulakci Altintas H. | Korkmaz Aslan G.

Article | 2019 | International Journal of Nursing Practice25 ( 5 )

Aim: The aim of this study was to determine the incidence of falls among community-dwelling older adults and the impact of pain and insomnia on falls. Methods: This cross-sectional study recruited 659 older adults. Pain was assessed by the Geriatric Pain Measure, and insomnia was assessed by the Insomnia Severity Index. The history of falls was assessed within the last 12 months. Risk factors for falls were determined using logistic regression analysis. Results: The incidence of falls within the last year was 37.2%. Based on the analyses, pain and insomnia were found to be risk factors for falls. Conclusion: In this study, falls wer . . .e observed as a common problem among community-dwelling older adults, and pain and insomnia were determined as risk factors for falls. Therefore, pain and insomnia should be addressed when prevention of falls among community-dwelling older adults are planned by health care professionals including nurses. © 2019 John Wiley & Sons Australia, Lt Daha fazlası Daha az

Economic and psychosocial problems experienced by pediatric with cancer patients and their families during the treatment and follow-up process

Bozkurt, Ceyhun | Ugurlu, Zilan | Tanyildiz, Hikmet Gulsah | Yesil, Sule | Kiraz, Hasim | Toprak, Sule | Yuksek, Nazmiye


Aim: To identify the psychosocial and economic problems of the pediatric patients with cancer who were treated at the Dr. Sami Ulus Obstetrics and Gynecology and Child Health and Diseases Training and Research Hospital's Pediatric Oncology Department and their relatives during this process. Material and Methods: We interviewed a total of 100 patients who were treated at Dr. Sami Ulus Obstetrics and Gynecology and Child Health and Diseases Hospital's Pediatric Oncology Department between 1996 and 2015, and were now followed up without treatment and their relatives using survey questions on the psychosocial and economic problems they . . .experienced. Results: Most of patients were from provinces outside Ankara. The average monthly income was below the level that would meet the family needs in 80% of the families and only 16% had extra income. Additional economic support had been received by 93% of the families in the patient group. Twenty-five families (25%) had been forced to sell property during the treatment. Forty-nine (49%) families had borrowed money from acquaintances and relatives or had taken out a bank loan. Serious psychological problems were experienced during and after the treatment by 46% of the mothers; 41% of the families had used religious procedures more commonly during the treatment period to cope with the psychological problems. Education was subject to a 1-2 year pause in 83% of the patients. Conclusion: Childhood-age patients with cancer and their families experience significant psychosocial and economic problems during and after the treatment process. Providing medical treatment and psychosocial support in harmony is an important factor that increases the success of cancer treatment. The patient and the family will require psychosocial support mechanisms throughout life, starting from the moment they face the disease. Developing national social support programs and legal regulations to form a basis for such programs are required in our country Daha fazlası Daha az

Investigation of Predictive Value of Complete Blood Count in the Diagnosis of Acute Complicated Appendicitis

Gunay, Yusuf | Tasdoven, Ilhan | Kozan, Ramazan | Koca, Sukran | Caglar, Emrah

Article | 2019 | HASEKI TIP BULTENI-MEDICAL BULLETIN OF HASEKI57 ( 1 ) , pp.26 - 31

Aim: Whether it is possible to differentiate complicated from uncomplicated acute appendicitis (AA) by using complete blood count (CBC) is controversial. In this study, we analysed the predictive value of CBC in differentiating complicated from uncomplicated AA. Methods: In this retrospective study, we analyzed records of patients who underwent appendectomy in our clinic between January 1, 2015 and January 1, 2018. The demographic data and CBC reports were collected. Results: Two hundred thirty-five patients underwent appendectomy due to AA. Of the 235 patients, 164 (69.8%) had non-complicated and 71 (30.2%) had complicated AA. The . . .mean white blood count (WBC), red cell distribution width (RDW), platelet and plateletcrit count were significantly higher in patients with complicated AA than in those with uncomplicated AA (p=0.001; Daha fazlası Daha az

Application of Fuzzy Dematel Technique to Assess Most Common Critical Operational Faults of Marine Boilers

Bashan, Veysi | Demirel, Hakan

Article | 2019 | JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI22 ( 3 ) , pp.545 - 555

Error analysis of threshold based three-hop device to device (D2D) communication systems [Eşik Deger Tabanli Üç-Atlamali Cihazdan-Cihaza Iletişim Sistemlerinin Hata Analizi]

Cakar E. | Kara F. | Kaya H.

Conference Object | 2019 | 27th Signal Processing and Communications Applications Conference, SIU 2019 , pp.545 - 555

In this paper, end to end average bit error rate (BER) for three-hop cooperative communication systems with a decode-and-forward (DF) relay is derived in the closed-form in the presence of error propagation. The derived end-to-end BER expression is verified via computer simulations. It is shown that the threshold selection for the relays has dominant effect on the error performance of the system. In this paper, we multi-hop communication between base station and cell-edge users to achieve ultra-wide coverage which is one of the important requirements for 5G and beyond. © 2019 IEEE.

Evaluation of fracture resistance of roots-filled with various root canal sealers at different time periods

Ozyurek, Emel Uzunoglu | Turker, Sevinc Aktemur

Article | 2019 | EUROPEAN ORAL RESEARCH53 ( 1 ) , pp.6 - 11

Purpose The reinforcement effect of 3 various root canal sealers (AH 26, MTA Plus sealer and BioRoot RCS) and gutta-percha at different time periods (1 week and 1 month) were evaluated in the present study. Materials and Methods Single-rooted, single-canalled, cracks-free 80 mandibular premolars were decoronated to a length of 13mm. Group PC (positive control, n=10): samples were left unprepared and unfilled. Seventy samples were prepared by using the ProTaper Rotary System up to F4. Group NC (negative control, n=10): samples were left unfilled. Remaining 60 samples were assigned into 3 groups; Group 1: AH 26 + F4 gutta-percha (GP); . . . Group 2: MTA Plus sealer + F4 GP and Group 3: BioRoot RCS + F4 GP. Filled samples were divided into subgroups according to storage time: Samples in Groups 1A, 2A, and 3A were stored for 1 week; while Groups 1B, 2B and 3B were stored for 1 month at 100% humidity to allow the complete setting of the sealers (n=10, for each). A universal testing machine at a crosshead speed of 1.0 mm/min was used for fracture testing. For each specimen, the force at the time of fracture was recorded and the data were analyzed statistically. Results The highest fracture resistance values were obtained in Group PC, while the lowest values were obtained in Group NC. Groups PC and NC were statistically different from each other and from other groups, regardless of time ( Daha fazlası Daha az

Prevalence and predictors of gestational diabetes mellitus: a nationwide multicentre prospective study

Aydin, H. | Celik, O. | Yazici, D. | Altunok, C. | Tarcin, O. | Deyneli, O. | Sancak, S.

Article | 2019 | DIABETIC MEDICINE36 ( 2 ) , pp.221 - 227

Aim Prevalence rates of gestational diabetes mellitus (GDM) show considerable variation among different countries and regions of the world. The primary aim of this study was to determine the nationwide prevalence and predictors of GDM in Turkey. Methods We conducted prospective nationwide screening among pregnant women. Between August 2016 and November 2017, a total of 2643 pregnant women from 51 centres in 12 different regions were enrolled. A two-step screening method and Carpenter and Coustan criteria were used in the diagnosis of GDM. Clinical and biochemical data were obtained using electronic database software. Results The nat . . .ional prevalence of GDM was found to be 16.2% [95% confidence intervals (CI) 15.0% to 17.4%] without a significant difference between urban and rural regions. Women with GDM were older (mean age: 32 +/- 5 vs. 28 +/- 5 years, P < 0.001) and heavier (mean BMI: 27.2 +/- 5.1 vs. 24.7 +/- 4.7 kg/m(2), P < 0.001) than their counterparts without GDM. The prevalence of GDM tended to increase with age (< 25 years, 6.9%; 26-35 years, 15.6%; and 36-45 years, 32.7%; P < 0.001). Maternal age, maternal BMI, history of previous GDM and family history of diabetes mellitus were independent predictors of developing GDM (P < 0.05 for all). Low-risk women (age < 25 years, BMI < 25 kg/m(2), no family history of diabetes) comprised 10.7% of the total population and the prevalence of GDM in these women was 4.5% (95% CI 2.4% to 7.8%). Conclusion The results of this nationwide study indicate that GDM is very common, affecting one in seven pregnancies in Turkey. Implementation of international guidelines on screening and management of this public health problem is required Daha fazlası Daha az

Investigating the effects of various testing parameters on Cerchar abrasivity index and its repeatability

Aydın H.

Article | 2019 | Wear418-419 , pp.61 - 74

Cerchar abrasivity index (CAI) test is widely used to estimate the tool life and wear in various excavation equipment in mining and tunneling projects. The aim of this study is to analyze the effect of various factors related to the CAI testing procedure. Particularly, sensitivity of CAI results is investigated due to variation of certain testing parameters, including the type of apparatus used, wear flat measurement methods, specimen surface conditions and stylus hardness. Relationship between CAI and certain testing parameters, and its repeatability are also investigated through statistical analyses of a series of CAI tests result . . .s obtained from twenty-one selected rock specimens. Results: show little variation between the type of apparatus used and between the selected wear flat measurement methods. Nevertheless, there is a significant large variation in CAI values according to the changes in specimen surface conditions and the hardness of stylus used. The results show that with an increase in the hardness of the steel stylus the CAI values decrease differently in accordance with the rock type tested. © 2018 Elsevier B.V Daha fazlası Daha az

Inverse coefficient problems for a transport equation by local Carleman estimate

Cannarsa P. | Floridia G. | Gölgeleyen F. | Yamamoto M.

Article | 2019 | Inverse Problems35 ( 10 ) , pp.61 - 74

We consider the transport equation ?tu(x,t)+(H(x) - ?u(x,t))+p(x)u(x,t)=0 in ? ×(0,t) where ? ? Rn is a bounded domain, and discuss two inverse problems which consist of determining a vector-valued function p(x) or a real-valued function ? by initial values and data on a subboundary of ?. Our results are conditional stability of Hölder type in a subdomain D provided that the outward normal component of H(x) is positive on ?D???. The proofs are based on a Carleman estimate where the weight function depends on H. © 2019 IOP Publishing Ltd.

Baqi's Translation of al-Mawahibu'l-ladunniyyah by Kastallani: Ma'alimu'l-yaqin-Research in Term of Translation and the Method of Narration Preference

Arslan, Ali


In order to learn the life of the Prophet (s.a.v.), the Muslims have made necessary studies from the beginning. After they entered the Islamic religion, Turks have been involved in these activities and some of these activities have been translation studies. The 16th century, which is undisputedly the brightest period of the Ottoman Empire, is also important in this respect that the number of related studies have increased in this period. It is very important in this regard that Baqi, who was considered the king of poets of the 16th century, translated Kastallani's work Mawahibu'l-ladunniyyah on Siyer. In addition to his mastery in t . . .he poem, he also shows his power in the prose as well as his account of Islamic sciences. Although some studies have been carried out on this work, especially in the field of literature, there are few studies about what he takes into attention to in translation. In particular, there is not enough information about the interpretation of the historical narrations or the translation and criticism of the hadith texts. Particularly the first parts of the work have been examined comparatively for this purpose and it is concluded that Baqi has made selections among the narrations. In this study, what Baqi took into consideration while selecting the methods and narrations that he followed in the translation was emphasized Daha fazlası Daha az

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