scholarly journals Epiphyseal Closure Time of Radius and Ulna Bones of the Proximal Section

2018 ◽  
Vol 54 (2) ◽  
pp. 123
Author(s):  
Tiara Mayang Pratiwi Lio ◽  
Toetik Koesbardiati ◽  
Achmad Yudianto ◽  
Rosy Setiawati
Keyword(s):  
Accurate Determination ◽  
Reference Population ◽  
Radiological Examination ◽  
Legal Process ◽  
Cross Sectional ◽  
Closure Time ◽  
Male Patients ◽  
Epiphyseal Closure ◽  
Distal Section

Accurate determination of age is important in the legal process; when a person’s  age is unknown or must be authenticated, a forensic age identification method must be applied. One of such methods is to assess the epiphyseal closure on the bone through radiological examination. The main problem associated with the use of this method is the relevance of the reference population provided because epiphyseal closure is influenced by genetics and nutrition. This method needs data to represent each population. Radiological examination of elbow bones of 30 male patients aged 11-30 years and 18  female patients aged 14-28 years in Dr. Soetomo Hospital, Surabaya from January to April 2016 was carried out to determine the time of epiphyseal closure of the radius and ulna distal section. This was cross-sectional descriptive study. In conclusion, epiphyseal closure of proximal radius and ulna is complete at age 16 in males and 14 in females.

scholarly journals ERECTILE DYSFUNCTION

2016 ◽  
Vol 23 (03) ◽  
pp. 268-273
Author(s):  
Ansari Muhammad Rafique ◽  
Pooran Mal ◽  
Jairamani Bhagwan Das ◽  
Shafique-Ur-Rehman Memon ◽  
Syed M Tahir ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Erectile Dysfunction ◽  
Rural Areas ◽  
Cross Sectional Study ◽  
Hemodialysis Patients ◽  
Maintenance Hemodialysis ◽  
Diabetic Patients ◽  
Cross Sectional ◽  
Male Patients

Objectives: Erectile dysfunction (ED) is a very common and distressing healthproblem in chronic maintenance hemodialysis patients. There is no such data available fromSind province of Pakistan on this issue; we want to highlight the factors and prevalence oferectile dysfunction among hemodialysis patients in this part of our country. Study Design:This hospital based observational, cross-sectional study Setting: It was conducted at 04hemodialysis centers of Hyderabad city Perod: In 2014 Methods: The Study was conductedby using International Index of Erectile Dysfunction (IIEF-5) for determination of prevalence& severity of ED among these patients. Comparative analysis for frequency of ED was alsodone between urban & rural patients. Adapted Urdu version of IIEF-5 was used for those whocannot understand English pro forma. Results: There were total 62 male patients; all of themwere on maintenance hemodialysis for more than 6 months. Their ages were between 20 to59 years with mean 36±11. In this series of patients 80% (n=50) were < 50 years of age whilethe diabetic patients were 58% (n=36). The overall prevalence of ED observed in patients was88.7% (n=55) in our study. Severe ED was seen in 30 (48.4%) patients. The prevalence &severity of ED was significantly higher in diabetes mellitus and over 50 years of age. There washigher incidence of ED 94% observed in patients who are living in rural areas as compared tourban areas patients 82%. Conclusions: It has been concluded in this study that majority ofmale hemodialysis patients were suffering from ED problem. Diabetes mellitus and & > 50 yearsof age has the highest prevalence of ED. Erectile dysfunction is very common and distressinghealth related issue among hemodialysis patients and this should be addressed with routine

Relation between outer and luminal diameter in cannulated arteries

1999 ◽  
Vol 277 (5) ◽  
pp. H1745-H1753 ◽  
Author(s):  
Gilles Faury ◽  
Gail M. Maher ◽  
Dean Y. Li ◽  
Mark T. Keating ◽  
Robert P. Mecham ◽  
...  
Keyword(s):  
Accurate Determination ◽  
Experimental Conditions ◽  
Cross Sectional ◽  
Luminal Diameter ◽  
Fluorescent Marker ◽  
Wide Range ◽  
Before And After ◽  
Single Determination ◽  
Knockout Animals

Resistance in blood vessels is directly related to the inner (luminal) diameter (ID). However, ID can be difficult to measure during physiological experiments because of poor transillumination of thick-walled or tightly constricted vessels. We investigated whether the wall cross-sectional area (WCSA) in cannulated arteries is nearly constant, allowing IDs to be calculated from outer diameters (OD) using a single determination of WCSA. With the use of image analysis, OD and ID were directly measured using either transillumination or a fluorescent marker in the lumen. IDs from a variety of vessel types were calculated from WCSA at several reference pressures. Calculated IDs at all of the reference WCSA were within 5% (mean <1%) of the corresponding measured IDs in all vessel types studied, including vessels from heterozygote elastin knockout animals. This was true over a wide range of transmural pressures, during treatment with agonists, and before and after treatment with KCN. In conclusion, WCSA remains virtually constant in cannulated vessels, allowing accurate determination of ID from OD measurement under a variety of experimental conditions.

Accurate Measurement on Cross Sectional Area of Single Filaments Using a Desktop SEM

2015 ◽  
Vol 1083 ◽  
pp. 111-117
Author(s):  
Xi Ying Yang ◽  
Ou Yang Ting ◽  
You Qing Fei
Keyword(s):  
Accurate Determination ◽  
Cross Sectional Area ◽  
Morphological Observation ◽  
Sectional Area ◽  
Cross Sectional ◽  
Fiber Properties ◽  
Measurement Results ◽  
Fiber Sample ◽  
Key Parameter

Cross sectional area of single filaments, a key parameter to characterize fiber properties, was experimentally studied using a desktop scanning electron microscope. Three different methods are employed based on the pixel area, averaged diameter and single diameter measurements, respectively. Results have shown that all three methods can achieve accurate measurement results once the axis of fiber sample is kept parallel to the electron beam. Significant errors are generated for the fiber samples with their axis tilted, which may frequently occur as a sample prepared. For circular fibers, a single diameter measured from tilted fibers is sufficient to determine their cross sectional area at high precision with COV values below 1.6%. By selecting an appropriate method, a desktop SEM can serve as a convenient and powerful tool for accurate determination of cross sectional area as well as morphological observation.

Estimating the surface area of spruce and pine foliage from displaced volume and length

1987 ◽  
Vol 17 (10) ◽  
pp. 1305-1308 ◽  
Author(s):  
David G. Brand
Keyword(s):  
Surface Area ◽  
Accurate Determination ◽  
Direct Calculation ◽  
Regression Technique ◽  
Forest Research ◽  
Cross Sectional ◽  
Independent Variables ◽  
Needle Morphology ◽  
Sectional Shape

Accurate determination of the surface area of needle-leaved trees is a basic requirement for many types of physiological or growth analysis studies in forest research. While many methods are available to estimate surface area, there is still a need for an accurate, rapid measurement technique for species with three- or four-sided needle morphology. I propose a regression technique with length and displaced volume as the independent variables. The regression technique is an improvement over the use of displaced volume and length in direct geometric calculation as it does not assume a constant needle morphology. The regression technique gives more accurate results than direct calculation, is comparable in precision, and is necessary to counter bias where variation in the cross-sectional shape of foliage is related to the treatment or variable under study. Use of regression, however, requires that a subsample of foliage, representing the range of conditions to be studied, be sectioned and measured directly for surface area to develop the estimation equation.

scholarly journals Frequency of Ectasia among Patients with Coronary Atherosclerosis by Angiography Dual Source & 64 CT SLICE Evaluatin

2020 ◽  
Vol 10 (1) ◽  
pp. 24
Author(s):  
Marzie Motevalli ◽  
Mohammad Jalali ◽  
Raheleh Najarian ◽  
Fahimeh Rahnama ◽  
Shahrooz Yazdani
Keyword(s):  
Ct Angiography ◽  
Coronary Atherosclerosis ◽  
Morphological Changes ◽  
Treatment Plan ◽  
Accurate Determination ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Dual Source

Introduction: The aim of this study is Frequency of ectasia among patients with coronary atherosclerosis. Materials and Methods: This is a cross-sectional study, which retrospectively had evaluated a percentage of total frequency ectasia among patients with coronary atherosclerosis by angiography Dual a source &amp; 64 CT SLICE between 2007-20012 in Imag Center of Imam Khomeini Hospital and shahid Rajai Hospital. Results: Totally 2770 patients were enrolled in the study. The frequency of ectasia among all patients was 42 [1.5%]. The frequency of stenosis in patients with LAD ectasia was 36.8% [7 out of 19] while the frequency of LAD stenosis in other patients was 59.5% [1637 out of 2751] [P=0.045]. Distribution of stenosis in ecstatic LCx and RCA was not statistically different with patients without non ecstatic LCx and RCA. [P=0.47 and 0.45 respectively]. In patients with ectasia, the frequency of stenosis was 71.4 while it was 64.4% in patients without ectasia [P=0.35]. Discussion: Furthermore, detection and investigation of Ectasia in patients with stenosis will lead to more accurate determination of the treatment plan and the purpose of this study is finging a new assess prevalence of morphological changes Ectasia by CT angiography and coronary sclerosing Prevalence this group of patients.

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

Gender determination of caucasoid hair using image analysis

1993 ◽  
Vol 51 ◽  
pp. 216-217
Author(s):  
T.B. Ball ◽  
W.M. Hess
Keyword(s):  
Image Analysis ◽  
Cross Sections ◽  
Scalp Hair ◽  
The Body ◽  
Equivalent Diameter ◽  
Cross Sectional ◽  
Hair Samples ◽  
Length Width ◽  
Morphological Differences

It has been demonstrated that cross sections of bundles of hair can be effectively studied using image analysis. These studies can help to elucidate morphological differences of hair from one region of the body to another. The purpose of the present investigation was to use image analysis to determine whether morphological differences could be demonstrated between male and female human Caucasian terminal scalp hair.Hair samples were taken from the back of the head from 18 caucasoid males and 13 caucasoid females (Figs. 1-2). Bundles of 50 hairs were processed for cross-sectional examination and then analyzed using Prism Image Analysis software on a Macintosh llci computer. Twenty morphological parameters of size and shape were evaluated for each hair cross-section. The size parameters evaluated were area, convex area, perimeter, convex perimeter, length, breadth, fiber length, width, equivalent diameter, and inscribed radius. The shape parameters considered were formfactor, roundness, convexity, solidity, compactness, aspect ratio, elongation, curl, and fractal dimension.

Fast calibration of CBED patterns for quantitative analysis

1993 ◽  
Vol 51 ◽  
pp. 674-675
Author(s):  
M.A. Gribelyuk ◽  
M. Rühle
Keyword(s):  
Reciprocal Lattice ◽  
Accurate Determination ◽  
Incident Beam ◽  
Crystal Thickness ◽  
Structure Model ◽  
Beam Direction ◽  
Transmitted Beam ◽  
Reciprocal Vector ◽  
On Line

A new method is suggested for the accurate determination of the incident beam direction K, crystal thickness t and the coordinates of the basic reciprocal lattice vectors V1 and V2 (Fig. 1) of the ZOLZ plans in pixels of the digitized 2-D CBED pattern. For a given structure model and some estimated values Vest and Kest of some point O in the CBED pattern a set of line scans AkBk is chosen so that all the scans are located within CBED disks.The points on line scans AkBk are conjugate to those on A0B0 since they are shifted by the reciprocal vector gk with respect to each other. As many conjugate scans are considered as CBED disks fall into the energy filtered region of the experimental pattern. Electron intensities of the transmitted beam I0 and diffracted beams Igk for all points on conjugate scans are found as a function of crystal thickness t on the basis of the full dynamical calculation.

Computer-Assisted High-Re Solution TEM

1990 ◽  
Vol 48 (1) ◽  
pp. 162-163
Author(s):  
F.A. Ponce ◽  
H. Hikashi
Keyword(s):  
Signal To Noise Ratio ◽  
Accurate Determination ◽  
Computer Software ◽  
Video Camera ◽  
Image Contrast ◽  
Objective Lens ◽  
Computer Assisted ◽  
Optical Parameters ◽  
Astigmatism Correction

The determination of the atomic positions from HRTEM micrographs is only possible if the optical parameters are known to a certain accuracy, and reliable through-focus series are available to match the experimental images with calculated images of possible atomic models. The main limitation in interpreting images at the atomic level is the knowledge of the optical parameters such as beam alignment, astigmatism correction and defocus value. Under ordinary conditions, the uncertainty in these values is sufficiently large to prevent the accurate determination of the atomic positions. Therefore, in order to achieve the resolution power of the microscope (under 0.2nm) it is necessary to take extraordinary measures. The use of on line computers has been proposed [e.g.: 2-5] and used with certain amount of success.We have built a system that can perform operations in the range of one frame stored and analyzed per second. A schematic diagram of the system is shown in figure 1. A JEOL 4000EX microscope equipped with an external computer interface is directly linked to a SUN-3 computer. All electrical parameters in the microscope can be changed via this interface by the use of a set of commands. The image is received from a video camera. A commercial image processor improves the signal-to-noise ratio by recursively averaging with a time constant, usually set at 0.25 sec. The computer software is based on a multi-window system and is entirely mouse-driven. All operations can be performed by clicking the mouse on the appropiate windows and buttons. This capability leads to extreme friendliness, ease of operation, and high operator speeds. Image analysis can be done in various ways. Here, we have measured the image contrast and used it to optimize certain parameters. The system is designed to have instant access to: (a) x- and y- alignment coils, (b) x- and y- astigmatism correction coils, and (c) objective lens current. The algorithm is shown in figure 2. Figure 3 shows an example taken from a thin CdTe crystal. The image contrast is displayed for changing objective lens current (defocus value). The display is calibrated in angstroms. Images are stored on the disk and are accessible by clicking the data points in the graph. Some of the frame-store images are displayed in Fig. 4.

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