Ekmeklik Buğdayda Organik Ve Konvansiyonel Yetiştiriciliğin Karşılaştırması Üzerine Bir Araştırma

Bu araştırma, 2008-2009 vejetasyon döneminde Gerek – 79 Ekmeklik Buğday çeşidinin konvansiyonel, organik ve atık mantar kompostu (0-2400-4800-7200 kg/da) uygulama koşullarındaki verim, verim unsurları ve kalite üzerine etkilerinin belirlenmesi amacıyla Konya-Sarayönü koşullarında tesadüf blokları deneme desenine göre 3 tekerrür olarak yürütülmüştür. Araştırmada her üç yetiştirme ortamında da tane verimi, başak boyu, başak ağırlığı, başakta tane sayısı, başakta tane ağırlığı, bitki boyu, başakçık sayısı, bindane ağırlığı, protein, gluten, hektolitre özellikleri incelenmiştir. Araştırma sonucunda, en yüksek tane verimi 371,63 kg/da ile atık mantar kompostu uygulamasının 7200 kg/da dozunda elde edilmiştir. Konvansiyonel uygulamada elde edilen tane verimi 276,94 kg/da, organik tarım uygulamasında 195,36 kg/da olarak belirlenmiştir. Sonuç olarak, ekmeklik buğday yetiştiriciliğinde atık mantar kompostu uygulamasının konvansiyonel uygulamaya alternatif olacağı ve atık mantar kompostunun organik materyallerle hazırlanması durumunda, organik tarım üreticileri için elverişli bir gübre materyali olabileceği tespit edilmiştir

Bariatrik cerrahi sonrası viseral organ yağ infiltrasyon değişikliklerini izlemenin etkili yöntemi: İdeal IQ sekansı

Aim: The aim of this study is to demonstrate the efficiency of non-invasive imaging method-MR proton density fat fraction (PDFF); ideal IQ sequence- on detecting the effects of bariatric surgery on liver and pancreatic fatty infiltration. Materials and Methods: Thirty-nine patients (25 females, 14 males) who underwent bariatric surgery between May 2016 and April 2017 were analyzed retrospectively in this study. Body mass index (BMI) and body weight (BW) values of all patients were noted one week before and one month after bariatric surgery, and meanwhile an unenhanced upper abdominal MR imaging was performed. Liver fat fraction (LFF), pancreas fat fraction (PFF), liver volume (LV) and craniocaudal length of liver (LL) were measured with MR-PDFF and T2 weighted images. Changes in all parameters after the surgery were recorded and the correlation of these changes with the change in LFF was analyzed. Results: At the end of first month of bariatric surgery, a significant decrease on mean values of LFF and PFF has been observed along with a decrease of LV, LL, BW and BMI (p<0.0001). A moderate positive linear correlation was observed between LFF and PFF, LV, LL (r=0.69, 0.61, 0.49; respectively) while a weak positive linear correlation was noticed between LFF and BMI, BW (r=0.34, 0.21; respectively). Conclusion: Ideal IQ sequence enables quantitative analysis of fatty infiltration of the liver and pancreas and thus may be used as a non-invasive tool to monitor the positive effects of the bariatric surgery on fatty infiltration of these visceral organs in the postoperative period.Amaç: Bariatrik cerrahinin karaciğer ve pankreas yağ infiltrasyonu üzerindeki etkilerinin saptanmasında non-invaziv görüntüleme yönteminin-MR proton dansite yağ fraksiyonu (PDFF); ideal IQ sekansı-etkinliğini göstermeyi amaçladık. Gereç ve Yöntem: Bu çalışmada Mayıs 2016 ile Nisan 2017 tarihleri arasında obezite cerrahisi geçiren 39 hasta (25 kadın, 14 erkek) retrospektif olarak incelendi. Tüm hastaların vücut kitle indeksi (VKİ) ve vücut ağırlığı (VA) değerleri bariatrik cerrahiden bir hafta önce ve bir ay sonra kaydedildi ve bu esnada kontrastsız üst abdomen MR görüntülemesi yapıldı. MR-PDFF ve T2 ağırlıklı görüntülerle karaciğer yağ fraksiyonu (KYF), pankreas yağ fraksiyonu (PYF), karaciğer hacmi (KV) ve karaciğer kraniyokaudal uzunluğu (KKU) ölçüldü. Ameliyat sonrası tüm parametrelerdeki değişiklikler kaydedildi ve bu değişikliklerin KYF’deki değişiklik ile korelasyonu analiz edildi. Bulgular: Bariatrik cerrahinin 1. ayının sonunda KYF ve PYF ortalama değerlerinde anlamlı azalma ile birlikte KV, KKU, VA ve VKİ’de azalma gözlendi (p<0,0001). KYF ile PYF, KV, KKU arasında orta derecede pozitif bir doğrusal korelasyon gözlenirken (sırasıyla r=0,69, 0,61, 0,49), KYF ile VKİ, VA arasında (sırasıyla r=0,34, 0,21) zayıf bir pozitif doğrusal korelasyon fark edildi. Sonuç: İdeal IQ sekansı, karaciğer ve pankreasın yağ infiltrasyonunun kantitatif analizini sağlar ve bu nedenle postoperatif dönemde bariatrik cerrahinin bu viseral organların yağ infiltrasyonu üzerindeki olumlu etkilerini izlemek için non-invaziv bir araç olarak kullanılabilir

Military jet pilots have higher p-wave dispersions compared to the transport aircraft aircrew

Objectives: For the purpose of flight safety military aircrew must be healthy. P-wave dispersion (PWD) is the p-wave length difference in an electrocardiographic (ECG) examination and represents the risk of developing atrial fibrillation. In the study we aimed at investigating PWD in healthy military aircrew who reported for periodical examinations. Material and Methods: Seventy-five asymptomatic military aircrew were enrolled in the study. All the subjects underwent physical, radiologic and biochemical examinations, and a 12-lead electrocardiography. P-wave dispersions were calculated. Results: The mean age of the study participants was 36.15±8.97 years and the mean p-wave duration was 100.8±12 ms in the whole group. Forty-seven subjects were non-pilot aircrew, and 28 were pilots. Thirteen study subjects were serving in jets, 49 in helicopters, and 13 were transport aircraft pilots. Thirty-six of the helicopter and 11 of the transport aircraft aircrew were non-pilot aircrew. P-wave dispersion was the lowest in the transport aircraft aircrew, and the highest in jet pilots. P-wave dispersions were similar in the pilots and non-pilot aircrew. Twenty-three study subjects were overweight, 19 had thyroiditis, 26 had hepatosteatosis, 4 had hyperbilirubinemia, 2 had hypertension, and 5 had hyperlipidemia. The PWD was significantly associated with thyroid-stimulating hormone (TSH) levels. Serum uric acid levels were associated with p-wave durations. Serum TSH levels were the most important predictor of PWD. Conclusions: When TSH levels were associated with PWD, uric acid levels were associated with p-wave duration in the military aircrew. The jet pilots had higher PWDs. These findings reveal that military jet pilots may have a higher risk of developing atrial fibrillation, and PWD should be recorded during periodical examinations

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks

A search is presented for narrow heavy resonances X decaying into pairs of Higgs bosons (H) in proton-proton collisions collected by the CMS experiment at the LHC at root s = 8 TeV. The data correspond to an integrated luminosity of 19.7 fb(-1). The search considers HH resonances with masses between 1 and 3 TeV, having final states of two b quark pairs. Each Higgs boson is produced with large momentum, and the hadronization products of the pair of b quarks can usually be reconstructed as single large jets. The background from multijet and t (t) over bar events is significantly reduced by applying requirements related to the flavor of the jet, its mass, and its substructure. The signal would be identified as a peak on top of the dijet invariant mass spectrum of the remaining background events. No evidence is observed for such a signal. Upper limits obtained at 95 confidence level for the product of the production cross section and branching fraction sigma(gg -> X) B(X -> HH -> b (b) over barb (b) over bar) range from 10 to 1.5 fb for the mass of X from 1.15 to 2.0 TeV, significantly extending previous searches. For a warped extra dimension theory with amass scale Lambda(R) = 1 TeV, the data exclude radion scalar masses between 1.15 and 1.55 TeV

Measurement of the top quark mass using charged particles in pp collisions at root s=8 TeV

Peer reviewe

Search for supersymmetry in events with one lepton and multiple jets in proton-proton collisions at root s=13 TeV

Peer reviewe

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| &lt; 0.03 at 95% confidence level. [Figure not available: see fulltext.

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

Peer reviewe

An embedding technique to determine ττ backgrounds in proton-proton collision data

An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe