bluuebunny/crossref_metadata_2025_split huggingface dataset:
Capabilities of single-photon emission computed tomography combined with computed tomography in diagnosis of neck masses
Authors: Maksimova N A , Arzamastseva M A , Agarkova E I , Engibaryan M A 
Published: March 2018

Aim. Assessment of the capabilities of planar scanning combined with X-ray computed tomography in the diagnosis of neck masses.
Methods. The study included 9 patients with neck masses examined at Rostov Scientific Research Institute of Oncology. Patients with suspected retrosternal nodal growth and ectopic thyroid gland on clinical and ultrasound examinations received single-photon emission computed tomography combined with computed tomography. The technique included the following stages: (1) planar scanning; (2) volumetric dynamic emission tomography of relevant areas; (3) X-ray spiral computed tomography; (4) archiving, combining scan parameters; (5) post-processing and reconstruction of images and assessment of the results.
Results. Ultrasound study of neck masses in our study did not provide complete evaluation of surrounding anatomical structures due to large size of masses and did not allow identifying the connection between mass lesions and thyroid gland and evaluating relationship between the tumor and trachea, esophagus, great vessels. As a result of our study, with the use of single-photon emission computed tomography combined with computed tomography, among 9 patients with neck masses 5 (55.5%) patients were diagnosed with retrosternal thyroid lesions, 3 (33.3%) - ectopic thyroid gland and 1 (11.2%) - metastasis of neuroendocrine (small cell) carcinoma. 3 (60%) out of 5 patients with retrosternal thyroid lesions had a nodular goiter with retrosternal component and 2 (40%) patients had thyroid cancer with a nodular goiter. Conclusions. A combination of hybrid technologies of single-photon emission computed tomography and computed tomography for the identification of neck masses is a highly informative method providing single-step determination of the lesion location and assessment of its topographic and anatomical relationship with surrounding anatomical structures which allows optimizing the examination and choosing further management strategy.
Gebelikte Depresyon ve Anksiyete Artar mı?
Authors: KAYA ZAMAN Ferda , ÖZKAN Nurşah , TOPRAK Dilek 
Published: March 2018

GEBELİKTE
DEPRESYON VE ANKSİYETE ARTAR MI?

ÖZET

AMAÇ: Bu
çalışmanın amacı; gebelerdeki anksiyete ve depresyon seviyelerini, üreme
çağındaki gebe olmayan kadınların seviyeleriyle mukayese etmek ve
sosyodemografik özelliklerindeki korelasyonları incelemektir. GEREÇ ve YÖNTEM: Çalışmaya Gazi Osman Paşa Taksim
Eğitim ve Araştırma Hastanesi Kadın Hastalıkları Doğum Polikliniği ile Gebe
Polikliniğine başvuran, 15-49 yaş arası doğurganlık çağındaki 50 gebe ve 50
gebe olmayan kadın dâhil edilmiştir. Çalışmaya alınan katılımcılara
sosyodemografik sorgulama için tarafımızca hazırlanan anket formu, Beck
Anksiyete Envanteri (BAE) ve Beck Depresyon Envanteri (BDE) uygulanmıştır.
Sonuçlar istatistiksel olarak analiz edilmiştir. BULGULAR: Gebe
grubun Beck depresyon ve anksiyete puanları kontrol grubundan istatistiksel
olarak anlamlı şekilde yüksek saptanmıştır. Ayrıca gebe grupta gebelik
dönemlerine göre Beck depresyon ve anksiyete puanları arasında istatistiksel
olarak anlamlı farklılık bulunmaktadır (p&lt;0,05); 3. Trimester grubunun puanı
1. Trimester grubundan anlamlı şekilde yüksek saptanmıştır (p:0,017). SONUÇ:Sonuç olarak bulgularımız gebeliğin tüm
trimesterlerinde, özellikle de 3. trimesterde depresyon ve anksiyete
düzeylerinin arttığını, yasam kalitesinin düştüğünü göstermektedir. Gebelik
sırasında depresif semptomlar, özellikle depresyonun psikolojik semptomları
ciddiye alınmalıdır ve gebeliğin normal bir parçası olarak değerlendirilip
gözden kaçırılmamalıdır. Anahtar Kelimeler: Gebelik, Anksiyete, Depresyon,
Sosyodemografik özellikler, Tedavi
Ankara İli Akyurt Bölgesindeki Gebelerde Demir Eksikliği Anemisi Prevalansı ve Demir Eksikliğine Sebep Olan Faktörler
Authors: Küçükceran Hatice , Ayhan Başer Duygu , Ağadayı Ezgi , Demir Alsancak Aybüke , Kahveci Rabia 
Published: March 2018

Amaç: Bu
çalışma, Ankara İli Akyurt bölgesindeki gebelerde anemi sıklığını ve etkileyen
faktörleri belirlemek amacıyla yapılmıştır.Gereç ve Yöntem: Tamamlayıcı
olarak yapılan araştırmamızı, 01.03.2016-01.04.2016 tarihleri arasında Ankara
ili Akyurt bölgesinde yaşayan, mevcut 7 tane aile hekimliği birimine kayıtlı, çalışmamıza
katılmayı kabul eden 200 gebe oluşturmuştur. Bilinen hematolojik veya kronik
hastalığı olan, çoğul gebeliğe sahip gebeler çalışma dışı bırakılmıştır. Çalışmaya
katılmayı kabul eden gebelere, literatür bilgilerine dayanarak hazırlamış
olduğumuz anket formu telefon görüşmesi esnasında okunarak gebelerin cevapları
not edilmiştir. Gebelerin trimesterine göre uyumlu hemoglobin ve hematokrit
değeri retrospektif olarak Akyurt Devlet Hastanesi sistemine bakılarak not
edilmiştir.Bulgular:
Gebelerin yaş ortalaması 26.84 ±5.64 (min: 16;max:42) olarak saptandı. Gebeler
gebelik haftasına göre 3 gruba ayrıldı. Gebelerin %12.5’i (n=25) 1. trimester (1-14
hafta), %41.5’i (n=83) 2. trimester (15-27 hafta), %46’sı (n=92) 3. trimesterde (28-40 hafta)
olarak tespit edildi. Gebelerin 1, 2 ve 3.trimesterlere göre anemi oranları
sırasıyla % 5.7, % 8.8 ve % 14.9 bulunmuştur. Tüm gebelere
bakıldığında ise gebelerin % 13.15‘inin anemik olduğu saptanmıştır. Gebelerin
anemi durumu ile çay, kırmızı et ve sakatat tüketimi arasında istatistiksel
olarak anlamlı bir farklılık bulunmaktadır (p&lt;0.05). Gebelerin anemi durumu
ile 2 yıl aradan daha sık aralıkta gebe kalma durumu arasında istatistiksel
olarak anlamlı bir farklılık saptanmıştır (p&lt;0.05).

Sonuç: Gebelikte anemi önemli ve sık görülen
bir problem olup; gebelerin çoğu bu problemin yeterince farkında değildir.
Anemi gebeliğin daha sorunlu geçmesine neden olabilir. Gebelik öncesinde anemi
varsa bu problemin önceden düzeltilmesi ve gebelikte de yakın takip edilmesi
önerilebilir.
The Evaluation of The Nicotine Dependence in Psychiatric Disorders
Authors: ERTEKİN Hulya , Ertekin Yusuf Haydar 
Published: March 2018

Objective: A relationship has been suggested between recurrent major depression and
high nicotine dependence. A similar relevance may establish a reference for
further investigations evaluating the role of nicotine dependence on various
psychiatric disorders. For this purpose, we assessed the frequency of smoking
and nicotine dependence, according to psychiatric diagnosis in psychiatric
outpatients.

Methods: A total of 1036
psychiatric patients were included in this descriptive study. The participants
were evaluated according to DSM IV (Diagnostic
and Statistical Manual of Mental Disorders, 4th. Edition) for
psychiatric disorders and Fagerström Test for Nicotine Dependence
(FTND) that was applied to define smoking habits.Results: The
overall smoking rate was 40.2% (n=1036), while the smoking rate of females and
males was 32.6% (n=229) and 56.0% (n=187) (p&lt;0.001) respectively. The mean
age of onset of smoking, and the mean FTND score were significantly higher in
men than women [The mean age of onset of smoking was 19.6 ± 6.5 years in women,
and 16.8 ± 6.0 years in men (p&lt;0.001). The mean FTND score in women and men was
3.9 ± 2.7 and 5.1 ± 2.6 (p&lt;0.001)]. The
age of onset of smoking, the number of smoking cessation trials, FTND scores, and the smoking cessation request of patients with psychotic disorders
were significantly lower than patients with affective disorders and anxiety
disorders (respectively p=0.008, p=0.047, p&lt;0.001,
p=0.015).Conclusion: The lower
ratio of high nicotine dependence in psychotic disorder in comparison to
affective and anxiety disorders may give insight to the role of nicotine in the
pathogenesis of the psychiatric diseases.
Hiperkapnik Solunum Yetmezliği Gelişen Kronik Obstrüktif Akciğer Hastalığı Hastalarında Noninvaziv AVAPS (Average Volume Assured Pressure Support) Modu
Authors: GÜLEÇ BALBAY Ege , AYTEKİN Fuat , BALBAY Öner , ANNAKKAYA Ali Nihat , ARBAK Peri 
Published: March 2018

Amaç: Bu çalışmada, AVAPS (Average Volume Assured Pressure Support) modu ile Noninvazif Mekanik Ventilasyon (NMV) uygulanan hastalarda hasta uyumu ve klinik başarı
oranlarının araştırılması amaçlanmıştır. Bu çalışma Düzce Üniversitesi Bilimsel Araştırma
Projesidir (Proje No: 2015.04.03.312).Yöntem:
Hiperkapnik Solunum Yetmezliği
Gelişen 22 Kronik Obstrüktif Akciğer Hastalığı (KOAH) hastalarına AVAPS modu uygulandı.
Başlangıç parametreleri olarak; AVAPS Modunda
IPAP Max 20 cm
H2O, IPAP Min 12 cm
H2O, Hedef Tidal volüm= İdeal
kilo x 6 ml/kg, EPAP 5 cm
H2O ayarları ile başlanıp hastanın tolere ettiği ölçüde arttırılacak
ve SaO2 ≥ %90 olacak şekilde verildi. Hastaya verilen basınç
desteğinin 6 ml/kg TV’ü oluşturacak şekilde olmasına dikkat edildi. Hastaların NIV
bağlandıktan sonra 1, 2, 8 ve 24. saatlerde
arter kan gazı kontrolleri, nabız, solunum sayısı, Borg dispne skalası
ölçümleri yapıldı.Bulgular:
Çalışmaya dahil edilen yaş ortalaması 70±10 olan 22 hastanın %72,7 (n:16)’si
erkekti. Geliş APACHE Skor ortalaması 16,50±4,24’tü. Geliş nabız ve solunum
sayısı ortamaları sırasıyla 96±13 ve
24±4 idi. Borg dispne skalası
ortancası 6 (min:2, max:8) idi. Hastaların %59 (n:13)’unda 24
saat içerisinde PH değerleri normal aralığına ulaştı. Hastaların NMV öncesi PH, PCO2, PaO2/FiO2
ve Borg dispne skalası değerler ile NMV uygulamasının 1, 2, 8, 24 saat PH, PCO2,
PaO2/FiO2 ve Borg dispne skalası değerleri
karşılaştırıldığında istatistiksel anlamlı olarak PH (p&lt;0,001) ve Pa02/FiO2
(p=0,002) değerlerinde artma, PCO2 veBorg dispne skalası
değerlerinde sırasıyla (p&lt;0,001, p&lt;0,001) azalma olduğu görüldü. İzlenen
parametrelerinde tümünde 1. Saatte anlamlı değişiklik görüldü. 24 saat izlenen hastaların sadece 1’i entübe
edilerek yoğun bakım ünitesine devri gerçekleştirildi. Hiçbir hastada
uyumsuzluk izlenmedi. Servis takipleri sonucunda hastaların %95 (n:21)’i evine
taburcu edilebildi.Sonuç: AVAPS modu ile NMV
uygulanmasında hasta uyumu ve klinik başarı oranlarının yüksek olduğu görüldü.
Constituents of Tanacetum Abratonifolium
Authors: Zerenler Çalışkan Zerrin , GÖREN Nezhun 
Published: March 2018

In this paper, terpenic metabolites of Tanacetum abratonifolium are
reported. Eight
known sesquiterpene lactones: tanachin (1),
tavulin (2), tamirin (3),
spiciformin (4), isospiciformin (5),
1β-hydroxy-6α-angeloxy-oxygermacra-4(5),10(14),11(13)-trien-8,12-olide (6), dentatin A (7), 1-β-hydroxy-6α-angeloyloxyeudesm-4(15), 11(13)-dien-8,12-olide
(8) as well as α-amyrin (9) and β-sitosterol (10)
were isolated from the aerial parts of Tanacetum abratonifolium,
collected in East Turkey.
Une méthode simple et rapide pour l’évaluation de statistiques d’occupation du sol à l’aide d’images à très haute résolution acquises par mini-drone
Authors: Semeki Ngabinzeke Jean , Pitchugin Mikhail , Linchant Julie , Vermeulen Cédric , Kahindo Muhongya Jean-Marie , Lejeune Philippe 
Published: March 2018

Le suivi de l’utilisation des terres par télédétection a récemment connu un essor important. Cela s’explique par une accessibilité accrue et souvent gratuite des images à (très) haute résolution ainsi que par le développement d’applications web destinées au suivi de l’utilisation des terres. L’accès à ces applications reste cependant soumis à l’existence d’une connexion Internet fiable faisant encore défaut dans certaines régions du globe. Dans ce contexte, la présente étude décrit une méthode permettant de produire des statistiques sur l’évolution de l’occupation du sol en réalisant une photo-interprétation par point sur des images en couleurs vraies à très haute résolution produites par mini-drone. La méthode utilise une application (PINT pour Photo-INTerprétation) intégrée dans le logiciel open source QGIS. Les surfaces de différentes occupations du sol sont dérivées des estimations des proportions de points affectées à chaque classe à partir d’une grille systématique. Pour illustrer l’intérêt de l’outil, l’étude considère les statistiques d’occupation du sol au sein de deux terroirs villageois du Complexe d’aires protégées de la Garamba, en République démocratique du Congo. Les résultats obtenus sont comparés avec ceux d’une cartographie de référence basée sur une photo-interprétation exhaustive après segmentation des images. Les écarts entre surfaces estimées par échantillonnage et surfaces de référence varient entre 0,2 % et 6,1 % pour les principales occupations du sol (forêts et savanes, défriches, jachères, implantations humaines et cultures). Des différences plus importantes (17,4 % et 13,4 %) sont enregistrées pour la classe « arbres isolés ». Le temps global de mise en œuvre de la méthode est de l’ordre de 60 ha par heure d’opérateur. L’utilisation du plugin PINT avec des images « drone » constitue une solution pertinente pour estimer des statistiques d’occupation du sol dans des régions web-isolées et pour des sites d’étendues de quelques (dizaines de) km².
Basic wood density variations of Parkia velutina Benoist, a long-lived heliophilic Neotropical rainforest tree
Authors: Morel Hélène , Lehnebach Romain , Cigna Jérémy , Ruelle Julien , Nicolini Eric , Beauchêne Jacques 
Published: March 2018

L’analyse de la densité radiale des bois tropicaux révèle des profils linéaires et parfois curvilignes. Ce type d’étude ne prend généralement pas en compte les variations longitudinales, qui sont considérées comme similaires aux variations radiales. La présente étude vise à mettre en lumière (1) un nouveau profil curviligne de la densité radiale du bois, (2) des différences d’amplitude entre les gradients radiaux et longitudinaux et (3) à classer les variations de la densité du bois (DB) selon différentes échelles pour Parkia velutina, essence émergente des forêts humides néotropicales. La variabilité de la densité du bois a été évaluée sur des rondelles entières recueillies sur six arbres abattus et des carottes radiales prélevées sur dix arbres sur pied, et le taux de croissance en hauteur par des prélèvements sur un axe dominant. Cette essence montre des taux de croissance très élevés indicatifs d’un tempérament héliophile. La DB varie de 0,194 à 0,642 g/cm3, amplitude rarement observée au sein d’un même arbre. La variation radiale de la DB est curviligne, l’amplitude radiale étant généralement plus faible qu’en longitudinal. En conséquence, pour les arbres matures, les valeurs DB dans les houppiers sont plus élevées que dans le tronc. Les variations de la DB peuvent être très significatives à différentes échelles. Le partitionnement de la variance montre également que l’estimation intra-individu de la DB pour l’essence Parkia velutina est plus précise si l’on prend en compte à la fois le gradient longitudinal et radial.
Optimal Design and Uncertainty Assessment of CO2 WAG Operations: A Field Case Study
Authors: Li Xiaoying , Wang Shuhua , Yuan Bin , Chen Shengnan 
Published: March 2018

Abstract
While CO2 flooding is expected to increase oil recovery, deviations of actual production from predicted values add significant challenges when optimizing flood design under uncertain conditions. The aim of this paper is to introduce a comprehensive optimization process with uncertainty analysis to obtain a more plausible decision for a field application scenario. In this paper, a comprehensive optimization process is developed to optimize the production performance of entire production lifespan for a CO2-WAG EOR process in Pubei reservoir, Turpan-Hami Basin. Start times of the waterflooding and CO2 WAG proess (i.e., durations of the primary production and waterflooding) are also included in the optimization process as well as the producer's bottomhole pressures and injection rates, in addition to the water and gas injection rates for the WAG process, WAG ratio, and well bottomhole pressures at the producers. The comparison is then performed between the conventional WAG optimization processes with the comprehensive optimization process. A total of 80 reservoir realizations is generated and history-matched to consider the impacts of the geological uncertainty on the optimization process. Finally, the reliability of this optimization design is quantified under the geological uncertainty. Results from a deterministic comprehensive optimization design demonstrate that the oil recovery and NPV of the optimized CO2-WAG process are increased by 23.4% and 51.3%, respectively, in comparison to the optimal case obtained by the conventional WAG optimization process. After incorporating uncertainties into the geological model, the distributions of oil recovery and NPV, including P10, P50, P90 are quantified. Based on uncertainty assessment, it is found that the optimized CO2-WAG scheme is a reliable scheme for the reservoir development. This paper provides quantitative insights on the significance of both geological and operational factors on the reliability of optimal design over the entire life span of a CO2 WAG operation. It is expected that the integrated workflow will help operators to optimize well performance more efficiently and predict production performances with higher reliability.
Gravity-Stable Processes for Dipping or Thick Reservoirs
Authors: Doorwar Shashvat , Lee Vincent , Davidson Andrew , Malik Taimur , Dwarakanath Varadarajan 
Published: March 2018

Abstract
Traditionally, all surfactant processes require viscous polymer to mobilize the oil bank. Recent literature shows that for highly dipping reservoirs, a continuous surfactant injection process can be stabilized with gravity alone, by slowing down the processing rate. We extend the gravity stable approach for surfactant slug processes and demonstrate the importance of maintaining gravity stability between slug and chase in addition to gravity stability between microemulsion and slug. Four sandpack experiments were conducted and pictures of the sandpack were taken at regular intervals to provide visual evidence of stable or unstable interfaces. Different color dyes were used to aid visualization of clear fluids. Gravity-stabilized surfactant-only processes eliminate the need of polymer and other facilities associated with surfactant polymer or alkali-surfactant-polymer processes. The slug process described in this paper is a significant improvement on the continuous surfactant injection gravity stable process published earlier.
A Review of Responses of Bulk Gel Treatments in Injection Wells-Part I: Oil Production
Authors: Aldhaheri Munqith , Wei Mingzhen , Zhang Na , Bai Baojun 
Published: March 2018

Abstract
As lifespan extenders, bulk gels have been widely applied to rejuvenate oil production from uneconomic producers in mature oilfields by improving sweep efficiency of IOR/EOR floodings. This paper presents a comprehensive review for the responses of injection-well gel treatments implemented between 1985 and 2014. The survey includes 61 field projects compiled from SPE papers and U.S. DOE reports. Seven parameters related to the oil production response were evaluated according to the reservoir lithology, formation type, and recovery process using the univariate analysis and stacked histograms. The interquartile range method was used to detect the under-performing and over-performing gel projects. Scatterplots were used to identify effects of the injected gel volume and the treatment timing on the treatment responses.
Results indicated that gel treatments have very wide ranges of responses for injection and production wells and for oil and water rates/profiles. The typical incremental oil production is 116 MSTBO per treatment, 15 STBO per gel barrel, or 10 STBO per polymer pound. We identified that gel treatments perform more efficiently in carbonate than in sandstone reservoirs and in naturally-fractured formations than in other formation types. In addition, the incremental oil production considerably increases with the channeling strength and the injected gel volume for all formation types, not just for the matrix-rock reservoirs. Moreover, gel treatments applied in naturally-fractured formations have lower productivities in sandstones than in carbonates based on the normalized performance parameters.
Declining tends were identified for all parameters of the oil production response with the treatment timing indicators. The sooner the gel treatment is applied; the faster the response and the larger the incremental oil production and its rate. It is recommended to allow longer evaluation times for gel treatments applied in matrix-rock formations or in mature polymer floodings as their response times may extend to several months. Gel treatments would perform more efficiently if they are conducted at water cuts &lt;70%, flood lives &lt;20 years, or recovery factors &lt;35%. For different application environments, the present review provides reservoir engineers with updated ideas about what are the low, typical, and high performances of gel treatments when applied successfully and how other treatment aspects affect the performances.
High Throughput Coreflood Experimentation as a Tool for EOR Project Design
Authors: Youssef Souhail , Mascle Matthieu , Vizika Olga 
Published: March 2018

Abstract
To speed up coreflood experiments, we have developed a state of the art experimental setup (CAL-X) designed for high throughput coreflood experimentation. The setup is composed of an X-ray radiography facility, a fully instrumented multi-fluid injection platform and a dedicated X-ray transparent core holder. The equipment was designed to handle small samples of 10 mm in diameter and 20 mm in length, and can be operated at up to 150 bar and 150 °C. The X-ray facility consists of a high power X-ray tube and a high speed-low noise detector allowing real-time radiography acquisition and offering sufficient density resolution to use dopant-free fluids. The injection platform is fully automated and allows the control and monitoring of different parameters (pressure, temperature, flow rate…). 1-D and 2-D saturation profiles are followed in real-time, allowing a precise determination of the recovery curve, reducing thus drastically time-consuming effluent measurements. Using this setup, a typical coreflood experiment can be run in less than a day. To validate the setup we have run a series of experiments on water-wet sandstone samples to determine capillary desaturation curve, steady-state relative permeabilities and recovery factor for a formulation designed for high temperature conditions (110°C). The results show good repeatability as well as good agreement when compared to standard coreflood experiments. In the recovery factor experiment, during surfactant injection, the formation and displacement of an oil bank was observed, yielding a recovery factor of 92% OOIP.