88,134 research outputs found
Normal apendiksin degerlendirmesinde düşük doz helikal BT incelenmesi
No full textNormal apendiksin değerlendirilmesinde düşük doz helikal BT incelemesi F. Nurefşan Boyacı Amaç: Kontrastsız düşük doz ve standart doz helikal BT ile normal apendiksin görüntülenme sıklığının ve görülebilirliğini etkileyen faktörlerin araştırılması. Gereç ve yöntem: Akut yan ağrısı şikayeti ile başvuran 68 hastanın kontrastsız SDBT ve DDBT tetkikleri hastaların cerrahi öykülerinden habersiz iki bağımsız radyolog tarafından değerlendirildi. Efektif tüp akımı SDBT incelemesinde 170mA, DDBT'de 30 veya 50 mA idi. Her iki dozda apendiksin görünümü değerlendirildi ve DDBT bulguları standart doz verileri ile karşılaştırıldı. Bulgular: Her iki radyoloğun ortalama duyarlılığı, özgüllüğü, pozitif ve negatif prediktif değerleri ve normal apendiksi göstermedeki doğrulukları SDBT'de sırasıyla %78, %100, %100, %31 ve %80 idi. DDBT'de ise %73, %92, %99, %24 ve %74 olarak hesaplandı. Normal apendiksin gösterilmesinde iki değerlendirici arasında SDBT (ĸ=0.610) ve DDBT'de (ĸ=0.703) iyi derecede görüş birliği vardı. Apendiks görülmesinde iki radyolog arasında SDBT ve DDBT'de istatiksel olarak anlamlı fark izlenmedi. SDBT ve DDBT'de abdomen ölçümleri ve viseral, periçekal yağ ile apendiks görülmesi arasında anlamlı bir korelasyon yoktu. Ortalama efektif radyasyon dozu 30 mA'da 1.7 mSv, 50 mA'da 2.8 mSv ve 170 mA'da 9.6 mSv olarak hesaplandı. Sonuç: Kontrastsız düşük ve standart doz helikal BT ile normal apendiks yüksek doğrulukla ve değerlendiriciler arasında iyi derecede görüş birliğiyle gösterilebilir.Evaluation of the normal appendix at low-dose helical CT. F. Nurefşan Boyacı Purpose: To determine the visualization rate of the normal appendix on low-dose and standard-dose unenhanced CT, and to evaluate the variables that may influence the visualization of the appendix. Materials And Methods: Low-dose (LDCT) and standard-dose (SDCT) unenhanced helical CT examinations of the 68 consecutive patients who presented with acute flank pain were evaluated by two independent radiologists who were blinded to patients surgical history. The effective tube current was 170 mA at SDCT, and reduced to 30 or 50 mA at LDCT evaluation. Images at each dose sets were evaluated for the visualization of appendix, and LDCT findings were compared with data of standard-dose. Results: The means for the two reviewers? sensitivity, specificity, positive and negative predictive values, and accuracy of visualization of normal appendix at SDCT and LDCT were 78% vs 73%, 100% vs 92%, 100% vs 99%, 31% vs 24% and 80% vs 74%, respectively. There is a good interobserver agreement for normal appendix visualization both at SDCT (ĸ=0.610) and LDCT (ĸ=0.703). For appendix visualization, there is no statistically significant difference was observed at SDCT and LDCT between two radiologists. There was no significant correlation in the appendix visualization neither with abdominal dimensions nor with visceral or pericecal fat at both SDCT and LDCT. The calculated mean effective radiation dose was 1.7 mSv at 30 mA, 2.8 mSv at 50 mA, and 9.6 mSv at 170 mA. Conclusion: Low-dose and standard-dose unenhanced helical CT can visualize a normal appendix with a high accuracy and good interobserver agreement
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Maine author Franklin F. Gould recalls his first glimpse of the outside world
No full textMaine author Franklin F. Gould recalls his first glimpse of the outside world as he relates how, as a young farm boy in the late 1800\u27s, he drove his father\u27s horses on an errand to an icebound river
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
Düşük doz kapsaisinin rat duodenumunda substans P ekspresyonu üzerine etkileri
No full textThe aim of the present study was to investigate effects of low dose capsaicin (CAP) on substance P (SP) expression and histomorphometric properties of duodenum. In this study, 21-day-old rats were divided into three groups as control, CAP-treated and vehicle. The control group remained without any treatment. 0.5 mg/kg CAP prepared in a solvent and injected subcutaneously to CAP-treated group and vehicle group was injected with only solvent for 20 days. All rats were weighed daily. At the end of the experiment, tissue samples were collected and Crossman's triple staining was used for histomorphometric examinations and labelled streptavidin-biotin immunohistochemical technique was used for SP expression. The body weight gain was lower in the CAP treated group but no significant differences between the groups. Low dose CAP did not alter the depth of crypt in the duodenum but the height of the villus was higher than the other group (p<0.05). In the CAP treated group, SP immunoreaction was stronger than the other groups in the surface epithelium, Lieberkuhn crypts, in the Brunner's glands, smooth muscles layer, and the neurons of the myenteric plexus of the duodenum. Finally, low dose CAP, markedly stimulated expression of SP and also induced positively histomorphometric changes in the duodenum. As a result of low dose CAP treatment may play important role in epithelial cell functions and in the regulation of digestive system physiology.Sunulan çalışmanın amacı, düşük doz kapsaisinin (CAP) duodenumun histomorfometrik yapısı ve substans P (SP) ekspresyonu üzerine etkisini incelemektir. Çalışmada kullanılan ratlar (21 günlük), kontrol grubu, CAP enjekte edilen grup ve çözücü solüsyon enjekte edilen olmak üzere üç gruba ayrıldı. Kontrol grubuna enjeksiyon yapılmadı. 20 gün boyunca CAP grubuna çözücü solüsyon içerisinde hazırlanan 0.5 mg/kg kapsaisin, taşıyıcı grubuna ise sadece çözücü solüsyon subkutan enjekte edildi. Ratlar her gün tartıldı. Deney sonrası dokular alınarak, doku kesitlerine histomorfometrik incemeler için Crossman’ın üçlü boyaması, SP ekspresyonunu belirlemek için ise işaretlenmiş streptavidin-biotin immunohistokimyasal tekniği uygulandı. CAP uygulanan grupta canlı ağırlık kazancı kontrol gruplarına göre düşüktü, fakat gruplar arasında istatiksel farklılık gözlenmedi. Düşük doz CAP duodenumun kript derinliğini etkilemezken, villus uzunluğu CAP uygulanan grupta diğer gruplara göre daha yüksek belirlendi (p<0.05). SP immunreaksiyonu duodenumun yüzey epitelinde, Lieberkühn kriptlerinde, ve Brunner bezlerinde, diğer gruplara göre CAP grubunda daha şiddetli gözlendi. Sonuç olarak düşük doz CAP, SP ekspresyonunu arttırdı ve duodenumda olumlu histomorfometrik değişiklere sebep oldu. Düşük doz CAP uygulaması sonucu artan SP ekspresyonu sindirim fizyolojisinin düzenlenmesinde önemli rol oynayabilir
Deutsches Archiv für klinische Medizin; 161. Band; 1928 / Über die Absorption des Bilirubins an das Eiweiß, ihre Bestimmung und klinische Verwertung : aus der III. medizinischen Klinik in Wien (Vorstand: Prof. Chvostek)
No full textvon Doz. Dr. O. Weltmann und Dr. F. Jos
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