Examination of microvascular structures of midcortical region in sheep kidneys: a three dimensional approach.

Polyester-crystic cast was observed to reach the peritubular capillary plexus following injection in sheep kidneys. Microvascular structures in this region are also reported in this study. Glomeruli were found to vary in size and shape. Diameters of afferent arterioles were larger than those of efferent arterioles. The glomerulus is supplied by more than one afferent arteriole, and in some regions, the blood in afferent arterioles joins collateral circulation via the intercapillary plexus. Morphological properties at the end of the peritubular capillary plexus were found to be remarkably significant.&#60;/P&#62;</p

Rapid fixation of whole organ specimens and attendant problems.

Gross specimens are valuable sources in morphology education. In this study, we investigated how the fixation of gross specimens may be accelerated. For this purpose, whole organ specimens from freshly killed rabbits: extremities, kidney, heart, liver, stomach and uterus were fixed in a mercaptoethanol-formaldehyde mixture for 3-3.5h under the following conditions: 1, at room temperature; 2, at gradually increasing temperatures up to 45 degrees C; and 3, at a gradually increasing vacuum ranging from 20 kPa to 40 kPa. The results were compared with those of formaldehyde-fixed controls, and the mercaptoethanol-formaldehyde mixture was found to be useful in shortening the fixation time and providing good fixation. Both heat and vacuum enhanced these phenomena.</p

Çeşitli disseksiyon aşamalarında böbreğin plastinasyonu.

TEZ226Tez (Uzmanlık) -- Çukurova Üniversitesi, Adana, 1985.Kaynakça (s. 31-33) var.33 s. : rnk. ; 28 cm.

COMPARISON OF ANTHROPOMETRIC CHARACTERISTICS IN SUBJECTS APPLIED FOR DEPARTMENT OF PHYSICAL EDUCATION AND SPORTS

Beden Eğitimi ve Spor Yüksekokulu (BESYO) özel yetenek sınavına giren adayların, genel profillerinin belirlenmesi ve yaptıkları spor dallarına göre antropometrik özelliklerinin karşılaştırılması amacıyla yapılan bu çalışmaya 17-28 yaşlarında 304 genç katılmıştır. (Erkek: n: 216, yaş: 20.76 ± 2.18 yıl, boy: 174.40 ± 6.46 cm, vücut ağırlığı (VA): 66.18 ± 7.20 kg, Kadın: n: 88, yaş: 20.19 ± 2.18 yıl, boy: 161.24 ± 5.83cm, VA: 52.39 ± 5.59 kg;). Sınava giriş sırasına göre ölçümleri yapılan adayların çeşitli anatomik bölgelerinin uzunluk, çevre, çap ve deri kıvrımı kalınlığı ölçümleri kaydedilmiştir. Dataların analizi için SPSS 11.0 paket programında aritmetik ortalama, standart sapma, tek yönlü varyans (one-way ANOVA) analizi, farkı meydana getiren grubun belirlenmesi için ise Tukey testi kullanılmış, güven aralığı 0.05 olarak kabul edilmiştir. Düzenli olarak yaptıkları spor dallarına göre gruplara ayrılan adayların tek yönlü varyans analizi sonucuna göre erkeklerde; boy, VA, çevre ölçümlerinden; bel, kalça, baldır, ayak bileği, uzunluk ölçümlerinden; uyluk, baldır, ayak, derialtı yağ ölçümlerinden; abdominal deri kıvrımı (DK) ve vücut yağ yüzdesi (VYY) gibi parametrelerde gruplar arasındaki fark istatistiksel olarak anlamlı (p<0.00) bulunmuştur. Tukey testiyle anlamlı farklılığı meydana getiren grubun bütün parametrelerde basketbolcular olduğu saptanmıştır. Kadınlarda boy, VA, oturma yüksekliği, çevre ölçümlerinden; kalça, baldır, uyluk, ayak bileği, uzunluk ölçümlerinden; ayak, genişlik ölçümlerinden; diz gibi parametrelerde gruplar arasındaki fark istatistiksel olarak anlamlı (p<0.00) bulunmuştur. Anlamlı farklılığı meydana getiren grubun bu parametrelerde voleybolcular olduğu saptanmıştır. Bu çalışma sonucunda BESYO özel yetenek sınavına giren adayların morfolojik özelliklerin yaptıkları spor branşlarına göre anlamlı farklılık gösterdiği, bu farkı yaratan grubun erkeklerde basketbolcular, kadınlarda ise voleybolcular olduğu bulunmuştur.The aim of this study was to determined of general profile of young subjects and compared the anthropometrıc characteristics and body composition of different sports groups who entering special skills examination for Physical Education and Sports High School. 304 subjets (88 female, 216 male) were participated in this study (Male: age: 20.76 ± 2.18 years, height: 174.40 ± 6.46 cm, weight: 66.18 ± 7.20 kg, Female: age: 20.19 ± 2.18 years, height: 161.24 ± 5.83 cm, weight: 52.39 ± 5.59 kg). Various anthropometric measurements (diameters, circumferences and skinfold thickness) were taken from which different anthropometric indices were calculated (body mass index, Scelic index and Grant index). For data analysis, SPSS 11.0 packet pragramme was used. The comparisons were made using One-way ANOVA test. The level of significance was set at p<0.05. The analisys of variance showed that there were statistically significant differences (p<0.00) between in groups in the view point of anthropometric measurements such as height, weight, waist circumference, hip circumference, thigh circumference, calf circumference, ankle circumference, thigh length, calf length, foot length, abdomen skinfold and body fat. We found significant differences all of this parameters in male basketball players and female volleyball players. As a result of this study of young male and female who entering the exam of special abilities of the morphological features vary significantly according to the sports branch that creates these differences in men basketball players and in women volleyball players.

Evaluation of Some Morphological Characteristics of Elite Basketball Players According to Game Positions

Yapısal özellikler insan hareketlerini ve dolayısı ile de sportif performansı etkileyen önemli faktörlerden biridir. Bu çalışmada basketbol sporu temel alınarak Deplasmanlı Ligde Çukurova yöresinde basketbol oynayan yaş ortalaması 21 ± 4.44 olan 15 erkek ve yaş ortalaması 19 ± 2.07 olan 25 bayan toplam 40 elit basketbolcunun üst ekstremite morfolojik özelliklerinin mevkilere, yaş ve cinsiyete göre değerlendirilmesi amaçlanmıştır. Araştırma grubunun clavicula uzunlukları, üst ekstremite segment uzunlukları, boy uzunlukları ve vücut ağırlıkları ölçülmüştür. Boy uzunluğu erkeklerde 187 ± 0.88 cm, bayanlarda 172 ± 0.51 cm saptanmıştır. Üst ekstremite uzunluk ölçüleri bakımından aynı bireyde sağ ve sol tarafta anlamlı farklılık bulunamamıştır (p<0.05). Sağ taraf referans olarak alındığında erkeklerde clavicula uzunluğu 16.2 ± 0.70 cm, kol uzunluğu 34.0 ± 2.02 cm, ön kol uzunluğu 24.9 ± 1.63 cm, el uzunluğu 14.7 ± 1.21 cm, bayanlarda clavicula uzunluğu 15.1 ± 0.80 cm, kol uzunluğu 30.6 ± 1.36 cm, ön kol uzunluğu 22.0 ± 1.13 cm ve el uzunluğu 13.6 ± 0.91 cm olarak belirlenmiştir. Ölçülen bu uzunluklar ile cinsiyet arasında ve cinsiyet ile mevki arasında anlamlı bir ilişki saptanmıştır. Bu bulgulara dayanarak; basketbolda cinsiyetin boy ve üst ekstremite segment uzunluklarını etkileyen önemli değişkenlerden biri olduğu sonucuna varılmıştır.Structural features are one of the most important factors that affect body movements and sports performance. In this study, 15 male and 25 female elite basketball players in the teams of Çukurova region were evaluated morphologically according to their age, sex and game position. In morphologial evaluation, clavicular length, upper extremity segmental length, body height and weight were measured. Mean height of male and female players were 187 ± 0.88 cm and 172 ± 0.51 cm respectively. Upper extremity segmental length were not significantly different between right and left sides in each players (<0.05). Clavicular length, arm length, forearm length, hand length at the right the right side of male players were; 16.2 ± 0.70 cm, 34.0 ± 2.02 cm, 24.9 ± 1.63 cm, 14.7 ± 1.21 cm respectively. In female players similar measurements at the right side were; 15.1 ± 0.80 cm, 30.6 ± 1.36 cm, 22.0 ± 1.13 cm and 13.6 ± 0.91 cm respectively. There is a significant relationship between these measurements and players' sex. There is also a significant relationship between players' sex and their game position. It is concluded that, player's sex is one of the important determinants that affect height and upper extremity segmental length in basketball

A neural network approach for assessing the relationship between grip strength and hand anthropometry

This study aimed to determine grip strength data for Turkish dentistry students and developed prediction models that allow: i) investigation of the rela- tionship between grip strength and hand anthropometry using artificial neural net- works (ANNs) and stepwise regression analysis, ii) prediction of the grip strength of Turkish dentistry students, and iii) assessment of the potential impact of hand anthropometric variables on grip strength. The study included 153 right-handed dentistry students, consisting of 81 males and 72 females. From 44 anthropometric and biomechanical measurements obtained from the right hands of the participants; five anthropometric measurements were selected for ANN and regression modeling using stepwise regression analysis. We included stepwise regression analysis results to assess the predictive power of the neural network approach, in comparison to a classical statistical approach. When the model accuracy was calculated based on the coefficient of determination (R2), the root mean squared error (RMSE) and the mean absolute error (MAE) values for each of the models, ANN showed greater pre- dictive accuracy than regression analysis, as demonstrated by experimental results. For the best performing ANN model, the testing values of the models correlated well with actual values, with a coefficient of determination (R2) of 0.858. Using the best performing ANN model, sensitivity analysis was applied to determine the effects of hand dimensions on grip strength and to rank these dimensions in order of importance. The results suggest that the three most sensitive input variables are the forearm length, the hand breadth and the finger circumference at the first joint of digit 5 and that the ANNs are promising techniques for predicting hand grip strength based on hand breadth, finger breadth, hand length, finger circumference and forearm length. © CTU FTS 2015

The effects of mercaptoethanol-formaldehyde on tissue fixation and protein retention

The study compared the effects of mercaptoethanol-formaldehyde and formaldehyde alone, on tissue fixation and protein retention in human and mouse tissues. Shrinkage of tissues and the penetration rate of the fixatives were assessed. The cross-linking ability of the fixatives was determined by viscometry, sodium dodecyl sulphate-polyacrylamide gel electrophoresis, and spectrophotometry, using bovine serum albumin and human haemoglobin. Tissues fixed in buffered 0.0025% mercaptoethanol-4% formaldehyde showed good nuclear and cytoplasmic detail, better than those fixed in buffered 4% formaldehyde. There was no significant difference in shrinkage. A mixture of 0.0025% mercaptoethanol-4% formaldehyde penetrated faster into adult liver than 4% formaldehyde. The mean penetration rate (_+SE) or coefficient of diffusibility of 0.0025% mercaptoethanol-4% formaldehyde into adult liver was 1.32 _+ 0.01 and that of 4% formaldehyde was 1.12 _+ 0.06 (p<0.04). Both fixatives diffused more rapidly into mouse liver than into human liver. The cross-linking ability of mercaptoethanol-formaldehyde depends on the concentration of the fixative and the time of fixation. Bovine serum albumin (15%) and 0.1% mercaptoethanol alone formed a gel, whilst electrophoresis showed monomers in the supernatant. Mercaptoethanol (0.1%) also rapidly decreased the absorption at 420 nm, suggesting denaturation. It seems that mercaptoethanol increases the number of thiol groups available to form cross-links with formaldehyde. This study demonstrated that mercaptoethanol-formaldehyde fixed and cross-linked tissues better than formaldehyde at 3 h and 4 h, but not at 1 h and 2 h. The most effective concentration of mercaptoethanol for tissue fixation in 4% formaldehyde is 0.0025%

Çeşitli diseksiyon aşamalarında kalbin plastinasyonu

Çeşitli Diseksiyon Aşamalarında Kalbin Plastinasyon

Multiple arterial variation of the human upper limb

A case report of multiple variations involving the arteries of the upper limb in a single cadaver is presented. In addition to the proximal origin of the arteries unusual arterial patterns on both the right and left sides were present. On the right side, the subscapular artery gave rise to a large posterior circumflex humeral artery in addition to the thoracodorsal and circumflex scapular arteries. On the left side, the radial and ulnar arteries arose from the brachial artery at the level of arm, with their origins being opposite to the usual arrangement. There was an arciform anastomosis between the radial and ulnar arteries, with the radial recurrent artery arising from the concavity of the arch. The course of both the radial and ulnar arteries was normal at the wrist and hand, except for the absence of the first palmar metacarpal artery and an early bifurcation of the second palmar metacarpal artery. The French version of this article is available in the form of electronic supplementary material and can be obtained by using the Springer LINK server located at http://dx.doi.org/10.1007/ s00276-002-0011

Gross Dokuların Hızlı Fiksasyonunda Vakumun Etkisi

Bu çalışmada iyi bir fiksasyonu etkileyen etmenler dikkate alınarak çeşitli deneyler planlanmış ve sonuçları değerlendirilmiştir. Bu deneyler sonucunda vakımun hızlı fiksasyonu teşvik ettiği bulunmuştur. % 10 formalinde başarılı sonuçlar vermiştir. Vakum negatif basınç oluşturarak fiksatif solüsyonunun daha iyi penetre olmasını sağlamakta ve fiksasyon zamanını azaltmaktadır