scholarly journals The Output of Spermatozoa in Rams II. Relationship to Scrotal Circumference, Testis Weight, and the Number of Spermatozoa in Different Parts of the Urogenital Tract

1972 ◽  
Vol 25 (2) ◽  
pp. 359 ◽  
Author(s):  
BF Lino
Keyword(s):  
Vas Deferens ◽  
Mean Value ◽  
Urogenital Tract ◽  
Regression Coefficients ◽  
Testis Weight ◽  
Scrotal Circumference ◽  
Significance Levels ◽  
The Mean ◽  
Different Parts

Daily spermatozoan output from the urogenital tract (DSOU), scrotal circumference, testis weight, and the numbers of spermatozoa in the epididymis and other parts of the urogenital tract were measured in 10 rams. Testis weight and the numbers of spermatozoa in the head, body, and tail of the epididymis and in the vas deferens and ampulla were found to be bilaterally symmetrical in each ram. The daily spermatozoan output from the urogenital tract was linearly correlated with testis weight (r = o� 83), with epididymal spermatozoan reserves (r = 0'86), with extragonadal spermatozoan reserves (r = 0�90), and with the total number of spermatozoa in the urogenital tract (r = O� 84). The significance levels of the regression coefficients indicated that these parameters would give good estimates of each other. The total number of spermatozoa in the urogenital tract of all rams at slaughter divided by the predicted time taken for spermatozoa to traverse the tract was found to be approximately 6% below the mean value for the daily spermatozoan output of all rams.

scholarly journals HPLC Quantitative Analysis of Main Stilbenes and Flavones in Different Parts ofMatteuccia struthiopteris

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Shubei Li ◽  
Dong Zhang ◽  
Lan Yang ◽  
Yujie Li ◽  
Xiaoxin Zhu ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Linear Regression ◽  
Phosphoric Acid ◽  
Flow Rate ◽  
Mobile Phase ◽  
Gradient Elution ◽  
Hplc Method ◽  
Regression Coefficients ◽  
The Mean ◽  
Different Parts

A simple and accurate HPLC-UV method was developed for the simultaneous quantitative analysis of main stilbenes and flavones in different parts (fronds, rhizomes, and frond bases) ofM. struthiopteris. The chromatographic separation was performed on a Kromasil C18 column (4.6 mm × 250 mm, 5 μm) with the mobile phase of MeOH-H2O (including 0.1% phosphoric acid) using a gradient elution at the flow rate of 1.0 mL min−1and UV detection at 295 nm. The method was validated by specificity, linearity, accuracy (recovery), and precision tests (repeatability, intra- and interday). For all the six compounds, the linear regression coefficients ranged from 0.9958 to 0.9998 within the test ranges; intra- and interday precisions were<2% and the mean recoveries ranged from 98.09 to 103.56%. The amount of these compounds in the frond bases was almost the same as in the rhizomes but much higher than that in the fronds. The results indicate that the HPLC method developed was appropriate for the analysis of the six compounds in different parts (fronds, rhizomes, and frond bases) ofM. struthiopteris.

Sex Differences in Genetic Determinants of Craniofacial Variations - A Study Based on Twin Kinships

1998 ◽  
Vol 47 (1) ◽  
pp. 31-41 ◽  
Author(s):  
K. Sharma
Keyword(s):  
Sex Differences ◽  
Genetic Variance ◽  
Mean Value ◽  
Regression Coefficients ◽  
Genetic Determinants ◽  
Heterogeneity Of Variance ◽  
Variance Ratios ◽  
Ear Height ◽  
The Mean ◽  
Variance Estimates

AbstractRace, sex, nutritional status and cultural factors affect craniofacial morphogenesis. Out of these, sex is a major factor in craniofacial differentiation, because it can be stronger in one ethnic group and weaker in another. In this study, sex differences in genetic variance and heritability of 13 craniofacial traits are investigated. The study is based on a sample of 45 MZ and 101 DZ twin pairs and their 125 singleton siblings, 104 fathers and 103 mothers in 146 families drawn from an urban population of Chandigarh. Results of t'-tests for equality of the means reveal association of zygosity with the mean value of bigonial diameter in female twins and for none in males. Heterogeneity of variance is observed in about 50% traits in females as compared to 15% in males. This invalidates conventional within-pair genetic variance estimates for these traits. The revised genetic variance ratios are higher on an average in males than in females. However, there is greater MZ environmental covariance in male twins than their female counterparts. Family data indicate higher maternal effect for ear height, nasal height and frontal breadth, while greater paternal effect is seen in cranial traits. Sex-wise midparent-child regression coefficients show greater heritability in daughters for nasal traits and bigonial breadth, while sons show higher genetic component for head size measures.

scholarly journals Effect of moisture content on terminal velocity of lentil grain

2019 ◽  
Vol 65 (No. 1) ◽  
pp. 7-12
Author(s):  
Zahra Basati ◽  
Ezzatollah Askari Asli- Ardeh ◽  
Vali Rasooli-Sharabiani
Keyword(s):  
Wind Tunnel ◽  
Moisture Content ◽  
Aerodynamic Characteristics ◽  
Terminal Velocity ◽  
Mean Value ◽  
Vertical Wind ◽  
Airflow Rate ◽  
Section Area ◽  
The Mean ◽  
Different Parts

One of the aerodynamic characteristics of lentil is its terminal velocity. In order to determinate the terminal velocity, was designed a vertical wind tunnel. It was fabricated based on existing methods and standards. For decreasing the non-uniformity of airflow in the vertical wind column, was used a honey comb test area with 5 mesh screens. So, a wind tunnel nozzle was designed and fabricated using Morel method with the aim of increasing airflow rate and decreasing losses due to mesh screens. The height and section area of tunnel were 1.425 m and 0.1 × 0.1 m2, respectively. The pressure loss values were calculated at different parts of tunnel and then, the required power of tunnel was determined. In this study, lentil grains of Kimia and Gachsaran varieties were separated at three groups based on their size (small, medium and large). Then, the terminal velocity was measured at 5 levels of moisture content (8, 12, 16, 20 and 24% (w.b.)) for each group. The results showed that Kimia and Gachsaran variety had the highest (7.204 m·s–1) and the lowest (6.987 m·s–1) terminal velocity, respectively. The mean value of terminal velocity increased linearly from 6.751 to 7.396 m·s–1 by increasing the moisture content from 8 to 24% (w.b.). Also, by increasing the grains dimension from small to large, the terminal velocity increased from 6.345 to 7.792 m·s–1.

scholarly journals Reference Values and the Z-Score Values of Tricuspid Annular Plane Systolic Excursion in Chinese Children

2022 ◽  
Author(s):  
Danlei Chen ◽  
Jinghui Guo ◽  
Bo Liu ◽  
Chunhua Zheng ◽  
Guimin Huang ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Reference Values ◽  
Mean Value ◽  
Chinese Children ◽  
Specific Reference ◽  
Z Score ◽  
The Mean ◽  
Multi Center Study ◽  
Different Parts ◽  
Center Study

Abstract Objective To establish age-specific and body surface area (BSA)-specific reference values of Tricuspid Annular Plane Systolic Excursion (TAPSE) for children under 15 years old in China. Study design A retrospective study was conducted in Children's Hospital Attached to the Capital Institute of Pediatrics. A total of 702 cases were included in this research to establish reference values of TAPSE. SPSS 25.0 (IBM) was used for data analysis. Lambda-mu-sigma method was used to calculate and construct the age-specific and BSA-specific percentiles and Z-score curves of TAPSE. Results The mean value of TAPSE increased with age and BSA from 0 to 15 years in a nonlinear way and reached the adult level (17mm) until 1 year old. No difference could be observed in genders. Conclusions TAPSE values increased with age and BSA in Chinese children aged between 0-15 years and there was no difference between boys and girls. A multi-center study from different parts of China is supposed to be conducted in the future to reflect the whole spectrum of TAPSE in Chinese children.

152 Correlation between testicular and accessory sex glands biometric characteristics in Nellore and Caracu bulls

2019 ◽  
Vol 31 (1) ◽  
pp. 201
Author(s):  
N. N. Rodrigues ◽  
D. P. Vrisman ◽  
G. F. Rossi ◽  
A. P. Freitas ◽  
M. F. Zorzetto ◽  
...  
Keyword(s):  
Vas Deferens ◽  
Bos Taurus ◽  
Pearson Correlation ◽  
Reproductive Organs ◽  
Accessory Sex Glands ◽  
Scrotal Circumference ◽  
Array Transducer ◽  
Bos Taurus Indicus ◽  
The Mean ◽  
Positive Correlations

The objective of this study was to determine the correlation between testicular and accessory sex gland measurements in Nellore (Bos taurus indicus) and Caracu (Bos taurus taurus) bulls. Bulls (n=282, including 203 Nellore from 12 to 61 months and 79 Caracu from 12 to 48 months) had their reproductive organs measured. Scrotal circumference was measured with a tape. Length (dorso-ventral) and diameter (mid-lateral) of testes were measured using a graduated ruler. Testicular volume (V) was calculated by the cylinder formula: V=2[(R2)×π×L], where R=radius (diameter/2), L=testicular length and π=3.14 (Fields et al. 1979 J. Anim. Sci. 48, 1299-1304). B-mode ultrasonographic examinations with a 7.5-MHz transrectal linear-array transducer were performed to obtain the mean of 3 vertical dimensions of the vesicular glands, disseminated prostate, ampulla of vas deferens, and lumen of ampulla, and cranio-caudal and dorso-ventral dimensions of the prostate body and bulbourethral glands. For paired organs, the mean was calculated and used in analyses. Biometry data of testes and accessory sex glands were analysed by the PROC CORR (Pearson correlation) of the SAS program (SAS Institute Inc., Cary, NC, USA; P&lt;0.05). Testicular measurements (scrotal circumference, diameter and length) were positively correlated with each other (r=0.69 to 0.92). Similarly, biometrics of the accessory sex glands had positive correlations with testes. The vesicular glands had correlations of r=0.62, 0.43, 0.58 and 0.59 with testes length, diameter, and volume and scrotal circumference, respectively. Correlations testicular biometry characteristics and ampulla of vas deferens ranged from 0.52 to 0.68, whereas those between testicular characteristics and lumen of ampulla were much lower (r=0.28 to 0.37), perhaps due to bulls riding penmates and ejaculating before the ultrasonographic examination. The dorso-ventral measure of the prostate body had positive correlations with size of testes (r=0.13 to 0.28), whereas cranio-caudal measurement of this gland was not correlated with size of testes. Finally, there were positive correlations between testes and disseminated prostate (0.28 to 0.36), and testes and bulbourethral glands, both in the dorso-ventral and cranio-caudal dimensions (0.17 to 0.42). In conclusion, testicular biometry in bulls was correlated with measurements of accessory sex glands, perhaps due to testosterone synthesis, which is essential for accessory sex gland development.

Long-period modulated superstructures in Pd-12.5 at.%Ce and Pd-15 at.%Ce alloys

1990 ◽  
Vol 48 (4) ◽  
pp. 164-165
Author(s):  
Noriyuki Kuwano ◽  
Masaru Itakura ◽  
Kensuke Oki
Keyword(s):  
Electron Microscopy ◽  
Mean Value ◽  
Heavy Elements ◽  
Arc Furnace ◽  
X Ray ◽  
Long Period ◽  
Ultra High Purity ◽  
Heat Treated ◽  
Atomic Scattering ◽  
The Mean

Pd-Ce alloys exhibit various anomalies in physical properties due to mixed valences of Ce, and the anomalies are thought to be strongly related with the crystal structures. Since Pd and Ce are both heavy elements, relative magnitudes of (fcc-fpd) are so small compared with <f> that superlattice reflections, even if any, sometimes cannot be detected in conventional x-ray powder patterns, where fee and fpd are atomic scattering factors of Ce and Pd, and <f> the mean value in the crystal. However, superlattices in Pd-Ce alloys can be analyzed by electron microscopy, thanks to the high detectability of electron diffraction. In this work, we investigated modulated superstructures in alloys with 12.5 and 15.0 at.%Ce.Ingots of Pd-Ce alloys were prepared in an arc furnace under atmosphere of ultra high purity argon. The disc specimens cut out from the ingots were heat-treated in vacuum and electrothinned to electron transparency by a jet method.

Partition Coefficient Ratios and Tumour Perfusion Studied with 85mKr and 133Xe

1987 ◽  
Vol 26 (06) ◽  
pp. 253-257
Author(s):  
M. Mäntylä ◽  
J. Perkkiö ◽  
J. Heikkonen
Keyword(s):  
Partition Coefficient ◽  
Partition Coefficients ◽  
Regional Blood Flow ◽  
Blood Perfusion ◽  
Compartmental Analysis ◽  
Malignant Tumour ◽  
Mean Value ◽  
Perfusion Rate ◽  
Biological Variables ◽  
The Mean

The relative partition coefficients of krypton and xenon, and the regional blood flow in 27 superficial malignant tumour nodules in 22 patients with diagnosed tumours were measured using the 85mKr- and 133Xe-clearance method. In order to minimize the effect of biological variables on the measurements the radionuclides were injected simultaneously into the tumour. The distribution of the radiotracers was assumed to be in equilibrium at the beginning of the experiment. The blood perfusion was calculated by fitting a two-exponential function to the measuring points. The mean value of the perfusion rate calculated from the xenon results was 13 ± 10 ml/(100 g-min) [range 3 to 38 ml/(100 g-min)] and from the krypton results 19 ± 11 ml/(100 g-min) [range 5 to 45 ml/(100 g-min)]. These values were obtained, if the partition coefficients are equal to one. The equations obtained by using compartmental analysis were used for the calculation of the relative partition coefficient of krypton and xenon. The partition coefficient of krypton was found to be slightly smaller than that of xenon, which may be due to its smaller molecular weight.

Detection of Soluble Fibrin Monomer Complexes in Blood by Means of Protamine Sulphate Test

1968 ◽  
Vol 20 (01/02) ◽  
pp. 044-049 ◽  
Author(s):  
B Lipiński ◽  
K Worowski
Keyword(s):  
Human Subjects ◽  
Coronary Thrombosis ◽  
Mean Value ◽  
Healthy Human ◽  
Protamine Sulphate ◽  
Soluble Fibrin ◽  
Fibrin Monomer ◽  
Dog Plasma ◽  
The Mean ◽  
Precipitable Protein

SummaryIn the present paper described is a simple test for detecting soluble fibrin monomer complexes (SFMC) in blood. The test consists in mixing 1% protamine sulphate with diluted oxalated plasma or serum and reading the optical density at 6190 Å. In experiments with dog plasma, enriched with soluble fibrin complexes, it was shown that OD read in PS test is proportional to the amount of fibrin recovered from the precipitate. It was found that SFMC level in plasma increases in rabbits infused intravenously with thrombin and decreases after injection of plasmin with streptokinase. In both cases PS precipitable protein in serum is elevated indicating enhanced fibrinolysis. In healthy human subjects the mean value of OD readings in plasma and sera were found to be 0.30 and 0.11, while in patients with coronary thrombosis they are 0.64 and 0.05 respectively. The origin of SFMC in circulation under physiological and pathological conditions is discussed.

Detection of Circulating Tissue Factor and Factor VII in a Normal Population

1996 ◽  
Vol 75 (05) ◽  
pp. 772-777 ◽  
Author(s):  
Sybille Albrecht ◽  
Matthias Kotzsch ◽  
Gabriele Siegert ◽  
Thomas Luther ◽  
Heinz Großmann ◽  
...  
Keyword(s):  
Tissue Factor ◽  
Normal Population ◽  
Mean Value ◽  
Factor Vii ◽  
Significant Difference ◽  
Age Dependent ◽  
The Mean ◽  
Highly Correlated ◽  
And Gender

SummaryThe plasma tissue factor (TF) concentration was correlated to factor VII concentration (FVIIag) and factor VII activity (FVIIc) in 498 healthy volunteers ranging in age from 17 to 64 years. Immunoassays using monoclonal antibodies (mAbs) were developed for the determination of TF and FVIIag in plasma. The mAbs and the test systems were characterized. The mean value of the TF concentration was 172 ± 135 pg/ml. TF showed no age- and gender-related differences. For the total population, FVIIc, determined by a clotting test, was 110 ± 15% and the factor VIlag was 0.77 ± 0.19 μg/ml. FVII activity was significantly increased with age, whereas the concentration demonstrated no correlation to age in this population. FVII concentration is highly correlated with the activity as measured by clotting assay using rabbit thromboplastin. The ratio between FVIIc and FVIIag was not age-dependent, but demonstrated a significant difference between men and women. Between TF and FVII we could not detect a correlation.

Determination of Plasminogen in Clots and Thrombi

1966 ◽  
Vol 16 (01/02) ◽  
pp. 038-050 ◽  
Author(s):  
Ulla Hedner ◽  
Inga Marie Nilsson ◽  
B Robertson
Keyword(s):  
Mean Value ◽  
Main Mechanism ◽  
Clot Lysis ◽  
Post Mortem ◽  
Digestion Time ◽  
Normal Volunteers ◽  
Casein Solution ◽  
The Mean

SummaryThe plasminogen content was determined by a casein method in plasma and serum from 20 normal volunteers. The mean plasminogen content was found to be 10.1 ACU (the arbitrary caseinolytic unit defined in such a way that using a 3% casein solution and a digestion time of 20 min. at 37°C, 10 ACU gave an extinction of 0.300). No difference between serum and plasma regarding the plasminogen content was found.Plasminogen was determined in drained and drained plus washed clots prepared from 2 ml plasma. The highest values found in the drained clots were 0.9 ACU/clot and 0.2 ACU/clot in the drained plus washed clots.Plasminogen was also determined in drained and drained plus washed clots prepared from plasma with added purified plasminogen. The plasminogen was recovered in the washing fluid. According to these tests, then, purified added plasminogen is washed out of the clots.The plasminogen content of 20 thrombi obtained post mortem was also determined. The mean value was found to be 0.7 ACU/cm thrombus. Judging from our results, the “intrinsic clot lysis theory” is not the main mechanism of clot dissolution.

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