139,475 research outputs found
Leptogaster suleymani Hasbenli, Candan & Alpay, 2006, n. sp.
No full textLeptogaster suleymani n. sp. (Figs. 1–3, 7, 9–11, 15 – 17) Etymology The new species is named in honor of my respected colleague Dr. Süleyman SARIBIYIK who collected the specimens first. Description of male Body length 13 mm. General coloration black. Head. Face and parafacial area with silver whitish tomentum, Mouth margin projection extends from eyes line approximately as scape. Mystax with 2 black and 11 whitish setae in single row. Frons and occiput with brownishyellow tomentum; setae on frons short, black. Proboscis and palps black with whitish setae. Parafacial with long white setae extending to half of eyes. Antennae black, scape and pedicel with black setae; flagellum two times longer than scape and pedicel; style as long as flagellum, with one or two short setae. Occipital setae numerous, thick and black. Thorax. Mesonotum black with very sparse tomentum, anterior, lateral and posterior margins with yellow tomentum; dorsocentral vitta black, glossy. One supraalar and one notopleural macroseta black. Postpronotal lobes reddish. Pleurae with yellowishgreyish tomentum; anterior parts of anepisternum and katepisternum with long white setae. Scutellum with yellow tomentum, posterior margin with 4 black setae. Wings. Length 7 mm. Extending to sixth segment of abdomen. Membrane completely blackish, foggy, apex slightly paler. Venation black. Whole wing covered with microtrichia. Radialmedial crossvein situated in middle of discal cell. Posterior margin of wings with black thin setae. Halteres with brown stalk and knob black in anterior half, brownish yellow in posterior half. Legs. Coxa covered dense grayish white tomentum. Fore and midfemora black, dorsally with reddish yellow stripe. Hindfemora with apical half approximately 2 times larger than basal half; black, dorsally with reddish yellow stripe; with dorsal black and ventral short white setae. Fore and midtibiae black, with black setae and macrosetae; hindtibia black, dorsally with reddish yellow stripe, inner sides with yellowish white setae, outer sides with short white setae. Tarsi, ungues and empodium black; tarsal setae and macrosetae black, inner side of third hindtarsi with white setae. Abdomen. Black, with dense grayish brown tomentum. Terminalia. Black; upper half with black setae, lower half with yellowish white setae. Cerci with white setae. Epandrium tapering to apex with apex inward curved. Hypandrium broad at base, narrowing apically with an apical point (Figs. 1–2). Dististylus reaching to apex of epandrium; laterally apex obtuse with deep pit. Lateral processes of gonostyli narrow and tapering to apex, as long as half of dististylus. Aedeagus short, thin, tapering to apex. Lateral ejaculatory process rectangular. Aedeagal sheath broad at the base, narrowing to apical. Aedeagal apodeme rounded, with a basal indent in the ventral (Figs. 3). Female Similar to male except for following. Body length: 10–15 mm; wing length: 6–9 mm. Head. Mystax with two rows and 10–14 white setae. Abdomen. Tergites with grayish yellow tomentum; median of tergites with longitudinally wide dark stripe. Terminalia. Furca with narrow and pointed two bars (Fig. 7). Common duct of spermatheca short, whole surface transversely folded. Reservoir canals strongly curved immediately after common duct (Fig. 10) and transverse folded to valves; diameter 21 m. Spermathecal ducts then become thin and weakly sclerotized and surrounded with numerous canaliculi (Fig. 11); diameter 10– 12 m. They then become strongly sclerotized and smooth; diameter on anterior half 45 m, then they taper to a diameter of 24 m. Lateral spermatheca larger than median spermatheca and some with pointed tip; length of lateral spermatheca 200 m, width 133 m, length of median spermatheca 156 m, width 100 m (Fig. 9). Eggs. Ovoid, yellowbrown; length approximately 376 m, width approximately 257 m (Fig. 15). Chorion surface is fairly smooth, but at higher magnification, surface is covered by hexagons (Fig. 16). These hexagons include irregular debris. Micropylar region is in the opposite of hatched line of egg and daisylike; center with two micropylar openings (Fig. 17). Specimens Examined Holotype ɗ (spn 15096): TURKEY: Kahramanmaraş, Andırın, Çokak village, 1313 m., 3745.N, 3620.E, 19.06. 2005, Leg. A. Hasbenli. Paratypes (spn 1509715103): 1 ɗ, Kahramanmaraş, Andırın, Çiġşar village, 1400 m., 37 ° 45.N, 36 ° 19.E, 0 7.06. 2002, Leg. S. Sarıbıyık; 1 ɗ, Kahramanmaraş, Andırın, Çokak village, Kabaca location, 1500 m., 0 7.06. 2002, Leg. S. Sarıbıyık; 4 Ψ, Kahramanmaraş, Andırın, Çokak village, 1313 m., 19.06. 2005 Leg. A. Hasbenli; 1 Ψ, Kahramanmaraş, Andırın, Çiġşar village, 1597 m., 19.06. 2005 Leg. A. Hasbenli. The specimens are deposited in the collection of the Zoological Museum of the Gazi University (ZMGU), Ankara, Turkey. Diagnosis Blackish foggy wing coloration, general shape of spermatheca and male genitalia resemble to L. fumipennis (Figs 4–6, 8, 12–14 ). Leptogaster suleymani is differentiated from L. fumipennis by the following characters (Table. 1).Published as part of Hasbenli, Abdullah, Candan, Selami & Alpay, Neslihan, 2006, A new species of Leptogaster Meigen (Diptera, Asilidae) from Turkey with egg and spermatheca structure, pp. 49-57 in Zootaxa 1267 on pages 50-55, DOI: 10.5281/zenodo.17318
Are myelodysplastic children receiving sufficient health care in Turkey? An analysis of the problems in primary management and their impact on neuro-urological outcome
No full textObjective: To investigate the problems in the primary care of children with spina bifida and to analyze their impact on neuro-urological outcome in Turkey. Information from mothers about the disease, difficulties in getting medical services, availability and efficacy of prenatal ultrasound, and folic acid intake was also assessed. Patients: A retrospective review of 476 children registered in the pediatric urology section of our institutional multidisciplinary spina bifida clinic between 1996 and 2005 was made. All children were assessed for the time of primary repair, time to first neuro-urological visit, and compliance to follow up. A phone interview was made with 166 mothers to obtain data regarding their educational status, supplementary folic acid intake before/during gestation, compliance to obstetric follow up, prenatal diagnosis and counseling, information about the importance of neuro-urological surveillance, and difficulties in neuro-urological follow up. Results: Two-thirds of the mothers had an educational status of elementary school or lower. Phone interviews revealed inadequate obstetric follow up in 42% and a low prenatal diagnosis rate (49%) in those under regular follow up. Chart review revealed a significant delay in timing of primary surgical closure (mean 3 months and 2.9 years for open and closed lesions, respectively) and first neuro-urological follow-up visit (mean 1.8 years and 9.7 months after primary repair for open and occult lesions, respectively). Reasons for delayed closure were misguided advice of the nurse/midwife involved in delivery and inability to obtain tertiary health care. Socioeconomic inadequacy of the families and inefficacy of the health insurance system were the most important factors impairing follow up. Conclusions: Serious problems exist in the prevention, prenatal diagnosis and primary management of children with myelodysplasia in Turkey. As a consequence, neuro-urological follow up starts relatively late, which adversely affects the urological prognosis. © 2006 Journal of Pediatric Urology Company
Impact of crystallisation processes on depth profile formation in sol-gel PbZr(0.52)Ti(0.48)O3 thin films
No full textThis study revealed the influence of crystallisation processes on the homogeneity of the sol‐gel PbZr0·52Ti0·48O3 thin films, allowing identification and further optimisation of thin film performance. Crystallisation processes determine the optical gradient appearance, irrespective of the chemical solvents used in this work. X-ray diffraction analysis showed that a refractive index gradient was apparent in the samples which had dominant (001)/(100) orientation and significant change of lattice parameters with thickness
The efficacy of Tc99m dimercaptosuccinic acid (Tc-DMSA) scintigraphy and ultrasonography in detecting renal scars in children with primary vesicoureteral reflux (VUR)
No full textIntroduction: Pyelonephritis-induced renal scarring in children is a major predisposing factor for proteinuria, hypertension, and ultimate renal failure. The aim of this study was to investigate and compare the efficacy of Tc99m dimercaptosuccinic acid (Tc-DMSA) renal scintigraphy and renal ultrasonography (USG) in detecting renal scars in children with primary vesicoureteral reflux (VUR). Materials and methods: Tc-DMSA scan and USG studies were done in 62 children who were admitted to our clinic between 1997 and 2003 because of documented urinary tract infection (UTI) and diagnosed with primary VUR. Renal scarring detection rates of Tc-DMSA scan and USG were compared according to reflux grades. Results: In the whole group, renal scars were detected by Tc-DMSA scan and USG in 55% and 38% of refluxing units, respectively. Detection rates of Tc-DMSA and USG according to reflux grades were as follows: 47% and 29% in low-grade VUR (grades 1 and 2), 46% and 25% in mid-grade VUR (grade 3), 76% and 65% in high-grade VUR (grades 4 and 5), respectively. Conclusion: USG was found to be an inappropriate study in the detection of renal parenchymal scars, irrespective of the reflux grade. In this study, Tc-DMSA scan detected scars in 35% of kidneys reported to be normal on USG
Son dönem böbrek yetmezliğine ilerleyen bir sekonder HÜS nedeni: Kobalamin defekti
No full textAmaç:
Hemolitik Üremik Sendrom(HÜS) akut böbrek yetmezliği, trombositopeni ve mikroanjiyopatik hemolitik anemi triyadından oluşur. Tipik ve
atipik olabilir. Atipik HÜS kompleman ilişkilidir. Sekonder HÜS nedenleri arasında Kobalamin eksikliği bulunmaktadır.
Olgu:
8 yaşında erkek hasta bulantı, kusma, ishal ve halsizlik şikayetleri ile acile başvurdu. Özgeçmişinde Dandy Walker sendromu, epilepsi,
gelişme geriliği ve hipotroidi tanıları olduğu, denge problemi için fizik tedavi aldığı, basit kelimelerle konuştuğu; soygeçmişinde anne ve
babanın kuzen olduğu, 10 yaşında disleksi tanılı abisi olduğu öğrenildi. Fizik muayenesinde; genel durumu kötü, uykuya meyilli, kan basıncı
yüksek ve solunumu yüzeyeldi. Entübe edilip mekanik ventilatöre bağlandı. Tetkiklerinde akut böbrek yetmezliği, trombositopeni, anemi,
retilülositoz, LDH yüksekliği ve periferik yaymada şistositoz saptanan hasta HÜS ve hipertansif ensefalopati olarak değerlendirildi. Akciğer
grafisi pulmoner ödem ile uyumlu olan hastaya lasix ve esmolol infüzyonu, sürekli venövenöz hemodiyaliz(CVVHD) başlandı. Üç gün sonra
trombosit yükselmeye, LDH ve retikülosit düşmeye başladı. CVVHD stoplanıp extübe edildi. Yedinci gün HÜS atağı tekrarladı, hipertansif
atak geçirdi ve kranial BT’sinde intrakranial kanama saptandı, tekrar entübe edildi. Tekrarlayan atağı, C3 düşüklüğü ve nörolojik tutulum
nedeniyle atipik HÜS düşünülerek CVVHD ve plazma exchange(PLEX) başlandı. AdamTS sonucu normal, STEC sonucu negatif geldi ve
ekulizumab başlandı. Sonrasında trombositleri hafif yükseldi, retikülosit ve LDH’ı hafif düştü. Kısmi cevap düşünüldü. Bir hafta sonra HÜS
atağı ve hipertansif atak tekrarladı. Entübe edildiğinde tüpünden kanadığı görüldü, thorax BT’sinde pulmoner kanama saptandı. Pulmoner
tutulum kabul edilip PLEX ve CVVHD başlandı, ekulizumab verildi, 1 gün sonra kanaması durdu. Bir hafta sonra extübe edildi. Anürik olduğu
için aralıklı HD yapıldı. On gün sonra kardiak arrest geçirip müdahale sonrası döndü. Serum homosistein seviyesi yüksek saptanan hastada
kompleman ilişkili HÜS’e ilaveten kobalamin C defekti de düşünülerek hidroksikobalamin, betain, karnitin, folbiol ve koenzim Q tedavileri
başlandı. İki hafta sonra trombosit, 3 hafta sonra LDH ve retikülositleri normale geldi. Haptoglobulin yükselmeye başladı. Hipertansif seyreden anürik hastada amlodipin, furosemid, beta blokör, losartan, doksazosin tedavilerine rağmen normale gelmeyince malign hipertansiyon
kabul edilerek minoksidil başlandı. Kobalamin C defekti için başlanan tedaviler sonrası HÜS atağı gözlenmedi. Bir buçuk ay sonra solunum
sıkıntısı ve ensefalopati gelişmesi üzerine entübe edildi, kranial BT’de enfarkt görüldü, ancak HÜS bulguları yoktu.Hasta beyin ödemi tedavisi sonrasında düzeldi. Üçüncü ayda SDBY tedavisi başlandı, haftada 2 kez HD devam edildi. Dördüncü ayda idrar çıkışı arttı.
HÜS etyolojisinde kompleman ilişkili mutasyon saptanmadı, ancak ekulizumaba kısmi cevap alındığı ve ağır seyri göz önüne alındığında
stoplanmadı. Kobalamin C defekti açısından da mutasyon saptanmadı ve idrar çıkışı olunca bakılan metil malonik asit düzeyi kobalamin C
defekti düşündürecek kadar yüksek gelmedi. Ancak tedavi sonrası homosisteinde düşüş olması ve sonrasında HÜS atağı görülmemesi üzerine hasta ön planda Kobalamin eksikliğine bağlı sekonder HÜS olarak değerlendirildi ve tedavisi devam edildi. Olgu kalıcı diyaliz programına alınması, SDBY takibi ve “C” dışı Kobalamin eksikliklerinin tanısal tetkiklerinin tamamlanabilmesi açısından bir üst merkeze gönderildi.
Sonuç:
HÜS çocuklarda SDBY’nin önlenebilir sebeplerindendir. Primer ve sekonder sebepleri vardır. Erken tanı konulduğunda hızlı ve kolay ulaşılabilen tedavisi olduğundan kobalamin defektleri de akılda tutulmalı ve her HÜS olgusunda homosistein düzeyi mutlaka bakılmalıdır
Spatially-localized time dependent solutions including turbulence and their interactions in 2D Kolmogorov flow
No full textIn 2D Kolmogorov flow in small aspect ratio domains, spatially-localized solutions such as kink, traveling or time-dependent kink-antikink pars coexist. However, the conservation of the flow rate in the y direction strongly restrict combination of localized solutions and their positioning. We find that by adding a homogeneous flow U y their positioning is controlled and each of localized solutions including a spatially-localized chaos is isolated. Numerical results suggest that these isolated solutions can be elements constructing a whole flow
Characteristics of overlap region in high-Reynolds number turbulent channel flow
No full textDirect numerical simulation of the fully developed turbulent channel flows have been carried out at the Reynolds number based on the friction velocity and the channel half width, 2000, 4000 and 8000. A hybrid 10th order accurate finite difference scheme in the stream and spanwise directions, and a second-order scheme in the wall-normal direction is adapted as the spatial discretization method. We observed the plateau profiles in the indicator function corresponded to the von Karman constant. Furthermore, second peak of streamwise pre-multiplied spectra were appeared in the same wall normal height, 300 < y+ < 600, in case of Re = 4000. Nevertheless, the effects of the lager than the channel half height scale on the streamwise turbulent intensity are fixed contributions without dependence on Reynolds number. These results suggested that the new streamwise vortexes are formed between buffer layer and outer layer with increasing of Reynolds number
Infinite Order Differential Operators with a Glimpse to Applications to Superoscillations
No full textLa 'circunstancia' de 'Herederos y Pretendientes
No full textIn June 2010, the Ortega y Gasset Foundation hosted a Conference about the “Spanish Philosophical Transition” in order to debate the book of Francisco Vázquez, La filosofía española. Herederos y Pretendientes. Una lectura sociológica (1963-1990), recently published. This paper is the author’s response to criticism raised in the Conference and to published reviews received by this book. First, the author summarized the argument of Herederos y pretendientes. Secondly he responds and takes into account the most important objections against the book’s hypothesis and methodology. Finally the author evaluates the favorable judgments received by the book and suggests the limits of the historian’s task.Fundación Ortega y Gasset-Marañó
Author self-citation in orthodontics is associated with author origin and gender.
No full textBACKGROUND
The aims of this bibliometric study were to determine author self-citation trends in high-impact orthodontic literature and to investigate possible association between self-citation and publication characteristics.
METHODS
Six orthodontic journals with the highest impact factor as ranked by 2017 Journal Citation Reports were screened for a full publication year (2018) for original research articles, reviews, and case reports. Eligible articles were scrutinized for article and author characteristics and citation metrics. Univariable and multivariable negative binomial regression was used to examine associations between self-citation incidence and publication characteristics.
RESULTS
Medians for author self-citation rate of the most self-citing authors and self-citations were 3.03% (range 0-50) and 1 (range 0-19), respectively. In the univariable analysis, there was no association between self-citation counts and study type (P = 0.41), article topic (P = 0.61), number of authors (P = 0.62), and rank of authors (P = 0.56). Author origin (P = 0.001), gender (P = 0.001) and journal (P = 0.05) were associated with self-citation counts and in the multivariable analysis only origin and gender remained strong self-citation predictors. Asian authors and females self-cited significantly less often than all other regions and male authors.
CONCLUSIONS
Authors in orthodontics do not self-cite at a frequency that suggests potential citation manipulation. Author origin and gender were the only variables associated with citations counts. More bibliometric research is necessary to draw solid conclusions about author self-citation trends in orthodontic literature
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