Orta Gediz Havzasında (Salihli-Turgutlu) Tarımsal Amaçlı Bölgelendirme Yöntemi İle Organik Tarım Alanlarının Belirlenmesi

Bu çalışmada CBS yardımıyla Orta Gediz Havzası’nda yer şekilleri, toprak, iklim ve verimlilik kriterlerine bağlı olarak bitki yetiştiriciliği açısından tarımsal amaçlı ekolojik bölgelerin (zonların) ve organik yetiştiriciliğe uygun olan tarımsal alanların belirlenmesi amaçlanmıştır. Bu amaç için farklı veri setlerinden oluşan bir veritabanı tasarlanmıştır. Tasarlanan veritabanı toprak, topografya, bitki örtüsü, iklim ve toprak örneklerinin kimyasal, fiziksel ve verimlilik analiz sonuçları katmanlarından oluşturulmuştur. Ardından her bir katmanın değerlendirilmesinde ağırlıklı puan analizi kullanılmıştır. Öncelikli olarak bitki yetiştiriciliği açısından önemli olan özellikler saptanmış ve her birine önem derecesine göre etki katsayıları verilmiştir. Sonuç olarak her bir ağırlıklı değer toplanarak sınıflandırılmış ve agroekolojik bölgelerin haritası oluşturularak her zona uygun bitki çeşitleri belirlenmiştir. Orta Gediz Havzasında yaklaşık 17 000 ha alanda organik ve konvansiyonel tarım yapılan alanların organik madde miktarlarına ait haritalar oluşturulmuştur

Orta Gediz Havzasında (Salihli-Turgutlu) Tarımsal Amaçlı Bölgelendirme Yöntemi İle Organik Tarım Alanlarının Belirlenmesi

Bu çalışmada CBS yardımıyla Orta Gediz Havzası’nda yer şekilleri, toprak, iklim ve verimlilik kriterlerine bağlı olarak bitki yetiştiriciliği açısından tarımsal amaçlı ekolojik bölgelerin (zonların) ve organik yetiştiriciliğe uygun olan tarımsal alanların belirlenmesi amaçlanmıştır. Bu amaç için farklı veri setlerinden oluşan bir veritabanı tasarlanmıştır. Tasarlanan veritabanı toprak, topografya, bitki örtüsü, iklim ve toprak örneklerinin kimyasal, fiziksel ve verimlilik analiz sonuçları katmanlarından oluşturulmuştur. Ardından her bir katmanın değerlendirilmesinde ağırlıklı puan analizi kullanılmıştır. Öncelikli olarak bitki yetiştiriciliği açısından önemli olan özellikler saptanmış ve her birine önem derecesine göre etki katsayıları verilmiştir. Sonuç olarak her bir ağırlıklı değer toplanarak sınıflandırılmış ve agroekolojik bölgelerin haritası oluşturularak her zona uygun bitki çeşitleri belirlenmiştir. Orta Gediz Havzasında yaklaşık 17 000 ha alanda organik ve konvansiyonel tarım yapılan alanların organik madde miktarlarına ait haritalar oluşturulmuştur

Mapping the stellar age of the Milky Way bulge with the VVV : II. Deep JK s catalog release based on PSF photometry

Context. The bulge represents the best compromise between old and massive Galactic components, and as such its study is a valuable opportunity to understand how the bulk of the Milky Way formed and evolved. In addition, being the only bulge in which we can individually resolve stars in all evolutionary sequences, the properties of its stellar content provide crucial insights into the formation of bulges. Aims. We are providing a detailed and comprehensive census of the Milky Way bulge stellar populations by producing deep and accurate photometric catalogs of the inner ∼300 deg 2 of the Galaxy. Methods. We performed DAOPHOT/ALLFRAME point spread function (PSF) fitting photometry of multi-epochs J and K s images provided by the VISTA Variables in the Vía Láctea (VVV) survey to obtain deep photometric catalogs. Artificial star experiments have been conducted on all images to properly assess the completeness and the accuracy of the photometric measurements. Results. We present a photometric database containing nearly 600 million stars across the bulge area surveyed by the VVV. Through the comparison of derived color-magnitude diagrams of selected fields representative of different levels of extinction and crowding, we show the quality, completeness and depth of the new catalogs. With the exception of the fields located along the plane, this new photometry samples stars down to ∼1-2 mag below the old main sequence turnoff with unprecedented accuracy. To demonstrate the tremendous potential inherent to this new dataset, we give a few examples of possible applications, including (i) star count studies through the dataset completeness map; (ii) surface brightness map; and (iii) cross-correlation with Gaia DR2. Conclusions. The database presented here represents an invaluable collection for the whole community, and we encourage its exploitation. The photometric catalogs including completeness information are publicly available through the ESO Science Archive as part of the MW-BULGE-PSPHOT release.Peer reviewedFinal Accepted Versio

Mapping the stellar age of the Milky Way bulge with the VVV. I. The method

Recent observational programmes are providing a global view of the Milky Way bulge that serves as template for detailed comparison with models and extragalactic bulges. A number of surveys (i.e. VVV, GIBS, GES, ARGOS, BRAVA, APOGEE) are producing comprehensive and detailed extinction, metallicity, kinematics and stellar density maps of the Galactic bulge with unprecedented accuracy. However, the still missing key ingredient is the distribution of stellar ages across the bulge. To overcome this limitation, we aim to age-date the stellar population in several bulge fields with the ultimate goal of deriving an age map of the Bulge. This paper presents the methodology and the first results obtained for a field along the Bulge minor axis, at $b=-6^\circ$. We use a new PSF-fitting photometry of the VISTA Variables in the V\'{i}a L\'{a}ctea (VVV) survey data to construct deep color-magnitude diagrams of the bulge stellar population down to $\sim$ 2 mag below the Main Sequence turnoff. We find the bulk of the bulge stellar population in the observed field along the minor axis to be at least older than $\sim$ 7.5 Gyr. In particular, when the metallicity distribution function spectroscopically derived by GIBS is used, the best fit to the data is obtained with a combination of synthetic populations with ages in between $\sim$ 7.5 Gyr and 11 Gyr. However, the fraction of stars younger than $\sim$ 10 Gyr strongly depends upon the number of Blue Straggler Stars present in the bulge. Simulations show that the observed color-magnitude diagram of the bulge in the field along the minor axis is incompatible with the presence of a conspicuous population of intermediate-age/young (i.e. $\lesssim 5$ Gyr) stars.Comment: 14 pages, 7 figues, Accepted for publication on A&

Polynomial Solution of Non-Central Potentials

We show that the exact energy eigenvalues and eigenfunctions of the Schrodinger equation for charged particles moving in certain class of non-central potentials can be easily calculated analytically in a simple and elegant manner by using Nikiforov and Uvarov (NU) method. We discuss the generalized Coulomb and harmonic oscillator systems. We study the Hartmann Coulomb and the ring-shaped and compound Coulomb plus Aharanov-Bohm potentials as special cases. The results are in exact agreement with other methods.Comment: 18 page

The antioxidant activity of some curcuminoids and chalcones

The antioxidant properties of the synthetic compound (C1)–(C8), which comprised 7 curcuminoids and a chalcone, were evaluated by two complementary assays, DPPH and β-carotene/linoleic acid. It was found that, in general, the free radical scavenging ability of (C1)–(C8) was concentration-dependent. Compounds (C1) and (C4), which contained (4-OH) phenolic groups, were found to be highly potent antioxidants with higher antioxidant values than BHT suggesting that synthetic curcuminoids are more potent antioxidants than standard antioxidants like BHT. Using β-carotene-linoleic acid assay, only the water-soluble 2, 4,6-trihydroxyphenolic chalcone (C5) showed 85.2 % inhibition of the formation of conjugated dienes reflecting on its potent antioxidant activity

COVID-19. Pandemic surgery guidance

Abstract – Based on high quality surgery and scientific data, scientists and surgeons are committed to protecting patients as well as healthcare staff and hereby provide this Guidance to address the special issues circumstances related to the exponential spread of the Coronavirus disease 2019 (COVID-19) during this pandemic. As a basis, the authors used the British Intercollegiate General Surgery Guidance as well as recommendations from the USA, Asia, and Italy. The aim is to take responsibility and to provide guidance for surgery during the COVID-19 crisis in a simplified way addressing the practice of surgery, healthcare staff and patient safety and care. It is the responsibility of scientists and the surgical team to specify what is needed for the protection of patients and the affiliated healthcare team. During crises, such as the COVID-19 pandemic, the responsibility and duty to provide the necessary resources such as filters, Personal Protective Equipment (PPE) consisting of gloves, fluid resistant (Type IIR) surgical face masks (FRSM), filtering face pieces, class 3 (FFP3 masks), face shields and gowns (plastic ponchos), is typically left up to the hospital administration and government. Various scientists and clinicians from disparate specialties provided a Pandemic Surgery Guidance for surgical procedures by distinct surgical disciplines such as numerous cancer surgery disciplines, cardiothoracic surgery, ENT, eye, dermatology, emergency, endocrine surgery, general surgery, gynecology, neurosurgery, orthopedics, pediatric surgery, reconstructive and plastic surgery, surgical critical care, transplantation surgery, trauma surgery and urology, performing different surgeries, as well as laparoscopy, thoracoscopy and endoscopy. Any suggestions and corrections from colleagues will be very welcome as we are all involved and locked in a rapidly evolving process on increasing COVID-19 knowledg

The role of open abdomen in non-trauma patient : WSES Consensus Paper

The open abdomen (OA) is defined as intentional decision to leave the fascial edges of the abdomen un-approximated after laparotomy (laparostomy). The abdominal contents are potentially exposed and therefore must be protected with a temporary coverage, which is referred to as temporal abdominal closure (TAC). OA use remains widely debated with many specific details deserving detailed assessment and clarification. To date, in patients with intra-abdominal emergencies, the OA has not been formally endorsed for routine utilization; although, utilization is seemingly increasing. Therefore, the World Society of Emergency Surgery (WSES), Abdominal Compartment Society (WSACS) and the Donegal Research Academy united a worldwide group of experts in an international consensus conference to review and thereafter propose the basis for evidence-directed utilization of OA management in non-trauma emergency surgery and critically ill patients. In addition to utilization recommendations, questions with insufficient evidence urgently requiring future study were identified.Peer reviewe