Psychophysical Properties of the Trunk Midline

1997 ◽  
Vol 78 (1) ◽  
pp. 545-549 ◽  
Author(s):  
Giuseppe Spidalieri ◽  
Roberto Sgolastra
Keyword(s):  
Mental Representation ◽  
Direct Evidence ◽  
The Body ◽  
Image Analysis System ◽  
Anatomic Landmarks ◽  
Straight Line ◽  
Anterior Trunk ◽  
Analysis System ◽  
The Right ◽  
Male Subjects

Spidalieri, Giuseppe and Roberto Sgolastra. Psychophysical properties of the trunk midline. J. Neurophysiol. 78: 545–549, 1997. This study was carry out to obtain direct evidence that the body midline actually is perceived and to assess some psychophysical properties of this line. Twelve normal, right-handed male subjects were asked to make accurate pointing movements toward the midline of the anterior trunk on the basis of their mental representation of this line. Each hand was used to point while the head was either aligned with the trunk or tilted 30° to the right or left. Analysis of end-positions of pointing on trunk images acquired by an image analysis system indicated that the trunk midline indeed is perceived as a straight line. Three putative trunk midlines were taken into consideration on the basis of anatomic landmarks, and it was found that the mental representation of the trunk midline came nearest to the line orthogonal to the intermammary line crossing its midpoint. The performing hand and the position of the head relative to the trunk both had an effect on the mental representation of the trunk midline. These findings suggest that somatosensory signals from the trunk, as well as proprioceptive input from the neck, contribute to the elaboration of the subject's mental representation of the trunk midline.

scholarly journals Histologic study of use of microfibrillar collagen hemostat in rat dental sockets

2003 ◽  
Vol 14 (1) ◽  
pp. 12-15 ◽  
Author(s):  
Natasha Magro-Érnica ◽  
Osvaldo Magro-Filho ◽  
Idelmo Rangel-Garcia
Keyword(s):  
Control Group ◽  
Image Analysis System ◽  
Bone Area ◽  
Central Incisor ◽  
Histologic Study ◽  
Socket Healing ◽  
Hematoxylin And Eosin ◽  
Analysis System ◽  
The Right ◽  
Qualitative Analyses

The aim of this paper was to evaluate if the placement of microfibrillar collagen hemostat (MCH) into a dental socket interfered with healing. General anesthesia was administered to 30 adult male Albinus Wistar rats and the maxillary right central incisor was extracted. In the control group after each tooth was extracted, the socket was sutured. In the MCH group after each tooth was extracted, MCH was placed into the socket before suturing. Postoperatively, 5 animals were sacrificed from each group at 7, 21 and 28 days. The right maxilla was removed from each animal and histologic slides were stained with Masson's trichromic and hematoxylin and eosin. Quantitative and qualitative analyses were done. The percentage of bone area in the dental socket was quantified using the Image Lab 98 image analysis system. The bone area formation for the control and MCH groups was: 8.1% and 3.3% at 7 days, 34.4% and 33% at 21 days and 41% and 41.3% at 28 days, respectively. We concluded that MCH interferes with the beginning of dental socket healing but does not interfere with the final healing of the dental socket.

scholarly journals Islet Cryopreservation: Improved Recovery following Taurine Pretreatment

2001 ◽  
Vol 10 (3) ◽  
pp. 247-253 ◽  
Author(s):  
Anandwardhan A. Hardikar ◽  
Makarand V. Risbud ◽  
Claude Remacle ◽  
Brigitte Reusens ◽  
Joseph J. Hoet ◽  
...  
Keyword(s):  
Islet Cells ◽  
Radical Scavenging ◽  
The Body ◽  
Control Group ◽  
Image Analysis System ◽  
Islet Mass ◽  
Normal Glucose ◽  
Ethanesulfonic Acid ◽  
Analysis System ◽  
Digital Image Analysis System

Simple and efficient freezing methods with maximal postthawing recovery form the basis of ideal cryopreservation. Taurine (2-amino ethanesulfonic acid), an end-product of sulphur amino acid metabolism, is one of the most abundant free amino acids in the body. The membrane stabilizing, free radical scavenging, and osmoregulatory roles of taurine have been well documented. We studied the effect of physiological and supra-physiological concentrations (0.3 and 3.0 mM) of taurine on islet cryopreservation. Islet viability on cryopreservation was significantly improved in both the taurine-treated groups (91.9 ± 2.3% in 0.3 mM and 94.6 ± 1.58% in 3.0 mM group, p < 0.05) compared with the controls (85.7 ± 3.4%). Loss of peripheral islet cells was highly reduced in the taurine group, as examined under phase contrast and quantified by islet morphometric analysis (p < 0.05) using a digital image analysis system. Taurine-treated islets showed significant reduction in lipid peroxidation (0.905 and 0.848 nM MDA/μg protein for 0.3 and 3.0 mM taurine, respectively, p < 0.05) compared with control (1.307 nM MDA/μg protein) islets. In all, 500 islet equivalents (IE) of treated or control group islets were transplanted to BALB/c mice rendered diabetic with STZ. All animals showed a normal glucose clearance following a glucose load. Graft functionality was confirmed by normoglycemia (fasting plasma glucose: fpg < 150 mg/dl) after transplantation and reappearing hyperglycemia (fpg > 200 mg/dl) following removal of the graft. Suboptimal islet transplantation using 250 IE suggests that the grafted islet mass was inadequate for diabetes reversal. In addition, no significant differences were observed in the islet insulin content between the three groups following cryopreservation of the islets at −196°C. Our studies indicate that taurine pretreatment and its continued presence during islet cryopreservation improves the postthawing viable recovery of islets.

Evaluation of hippocampus in rhesus monkeys after chronic (1-year) inhalation exposure to marijuana: II. Morphometric methods

1990 ◽  
Vol 48 (3) ◽  
pp. 400-401
Author(s):  
S.W. Wilson ◽  
A.M. Andrews ◽  
A.C. Scallet ◽  
S.F. Ali ◽  
J.R. Bailey ◽  
...  
Keyword(s):  
Image Analysis ◽  
Intelligent Systems ◽  
Inhalation Exposure ◽  
Image Analysis System ◽  
Synaptic Density ◽  
Straight Line ◽  
Straight Line Distance ◽  
Imaging Research ◽  
Log File ◽  
Analysis System

An innovative method was used to collect data for morphometric analysis of synaptic measurements. Negatives of the CA3 region of the hippocampus were obtained as described by Andrews et al., 1990, and evaluated by computersupported image analysis. Negatives of 4000X and 40,000X magnification were used to measure synaptic density and width, respectively. The image analysis system (IAS) used an IBM-AT compatible computer with a frame grabber (Imaging Research Inc.). This particular system can measure either straight line distance (rubber line) or curved two point distances (draw line).For synaptic density, the IAS was calibrated in angstroms at a magnification of 4000X. A log file was created for each negative in which the measurement for each synapse was stored. The negative was placed on a transparency with grids 9 mm square to ensure that the entire negative was scanned. The image was displayed on a multicsync monitor using a high resolution camera (Applied Intelligent Systems Inc.). When a synapse came into view, the image was digitized on the monitor (Fig. 1 A and B) and stored in digital form.

Peri-Implant Defect Augmentation With Autogenous Bone: A Study in Beagle Dogs

2013 ◽  
Vol 39 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Asala F. Al-Sulaimani ◽  
Sameer A. Mokeem ◽  
Sukumaran Anil
Keyword(s):  
Bone Density ◽  
Bone Graft ◽  
Bone Grafts ◽  
Autogenous Bone Graft ◽  
Autogenous Bone ◽  
Image Analysis System ◽  
Beagle Dogs ◽  
High Bone ◽  
Analysis System ◽  
The Right

This study evaluates the success of immediate endosseous implants placed along with autogenous bone graft to fill the peri-implant gap. Thirty-two implants were inserted in 8 beagle dogs. The right and left lateral incisors in the maxilla and the mandible of all animals were extracted, and immediate postextraction implants were placed. In the control sites, no bone grafts or barrier membranes were used. In the contralateral experimental site, autogenous bone graft was used. The implants were retrieved with the jawbone for histomorphometric studies. The histomorphometric measurements were carried out using a computerized image analysis system. All implants were covered by compact, mature bone under examination in light microscopy. A high bone-implant contact percentage and bone density was observed at both grafted and nongrafted implant sites. The sites filled with autogenous bone graft showed a significantly higher crestal bone level and bone density compared to the nonfilled sites. The observations of the study emphasize that the filling of the peri-implant bone defects with autogenous bone grafts showed a better outcome compared to unfilled defects.

scholarly journals The Influence of Biofeedback in Postural Rehabilitation of Athletes

2021 ◽  
Vol 66 (1) ◽  
pp. 101-110
Author(s):  
Hajnal Chelaru ◽  
Codruța Florina Bulduş ◽  
Dan Monea
Keyword(s):  
Weight Distribution ◽  
Body Position ◽  
Center Of Gravity ◽  
The Body ◽  
Lower Limbs ◽  
Biofeedback Treatment ◽  
Postural System ◽  
Analysis System ◽  
The Right ◽  
Postural Analysis

"ABSTRACT. Background. A balanced posture allows sports movements PERFORMANCE with optimal consumption of energy and minimal stress on the musculoskeletal system with of the technology offered by the posturograph, we can identify the center of gravity deviations, the points of support, the load, the weight distribution in the soles, the anterior posteriorized or compressed posture, the asymmetries of the body. by an interpretation in biomechanical context, any compensations or decompensations can be identified. Aim. The aim of the study is to improve posture through biofeedback treatment using the GPS 600 device. Materials. The Posturograph or Global Postural System (GPS) is an advanced postural analysis system that uses techniques and methods of noninvasive diagnosis and evaluation in the field of medical recovery. Posturography includes 2 diagnostic units and software. Methods. We used the following methods: bibliographic study methods, method of observation, measurement method, experimental method, statistical method. Applied treatments. The treatments for re-educating the posture with the GPS 600 device took place for 2 weeks. During the treatment, the subjects had to maintain their body position / posture as indicated by the device. Results. From the 12 athletes, the anteriority of the head improved, the center of gravity, loading on the right and left lower limbs. At the end of the 2 weeks, the athletes reached a perfect balance of the center of gravity and the weight distribution on the lower limbs. Conclusion. Biofeedback treatments with the GPS 600 device help to improve POSTURE and maintain the results over time."

scholarly journals SUBSTANTIATION OF THE BASIC PARAMETERS OF THE SCREW EXPANDER FOR PROCESSING HIGH PROTEIN CROPS

2020 ◽  
Author(s):  
М.Г. Загоруйко ◽  
А.С. Дорохов ◽  
А.М. Марадудин
Keyword(s):  
Lateral Pressure ◽  
The Body ◽  
Theoretical Studies ◽  
Spiral Groove ◽  
Backward Extrusion ◽  
Straight Line ◽  
Processed Material ◽  
Basic Parameters ◽  
The Right ◽  
Made In

В статье приводится способ повышения производительности одной из разновидностей шнекового пресса – экспандера. Применение экспандера позволяет изготавливать комбикорма в виде нетвердой крупки, которая благотворно влияет на процесс усвояемости животными. Для исправления существующего недостатка экспандера – обратного выдавливания рабочей массы через зазор между шнеком и корпусом авторами предложен комбинированный профиль винтовой канавки шнека: левая боковая («толкающая») поверхность канавки имеет форму полуокружности, а правая боковая поверхность – в нижней части также форму полуокружности, а в средней и верхней – наклонной прямой линии. Теоретические исследования показали, что данный профиль способствует возникновению разности сил бокового давления со стороны пограничных частиц на основную массу материала, в отличии от шнеков со стандартной винтовой канавкой, выполненной в форме треугольника, трапеции или полуокружности. В свою очередь, неравномерное распределение бокового давления будет препятствовать обратному выдавливанию перерабатываемого материала через зазор между шнеком и корпусом, тем самым повышая производительность экспандера. Получены теоретические зависимости, позволяющие на базе основных геометрических параметров шнека геометрически описать конфигурацию шнека предложенной конструкции для последующего ее изготовления. The article provides a way to increase the productivity of a screw press variety - the expander. The use of an expander makes it possible to produce compound feed in the form of non-solid whole meals, which has a beneficial effect on the process of digestibility by animals. To correct the existing drawback of the expander - the reverse extrusion of the working mass through the gap between the screw and the body, the authors proposed a combined profile of the screw spiral groove: the left lateral (pushing) surface of the groove has the shape of a semicircle, and the right lateral surface has a semicircular shape in the lower part, and in the middle and upper - the shape of a sloping straight line. Theoretical studies have shown that this profile contributes to the appearance of a difference in lateral pressure forces from the side of boundary particles on the bulk of the material, in contrast to screws with a standard spiral groove made in the form of a triangle, trapezium, or semicircle. In turn, the uneven distribution of lateral pressure will prevent backward extrusion of the processed material through the gap between the auger and the body, thereby increasing the performance of the expander. Theoretical dependencies have been obtained that allow, on the basis of the basic geometric parameters of the screw, to describe geometrically the configuration of the screw of the proposed design for its subsequent manufacture.

Digital Processing of STEM Images

1981 ◽  
Vol 39 ◽  
pp. 236-237
Author(s):  
A. V. Crewe ◽  
M. Ohtsuki
Keyword(s):  
High Resolution ◽  
Low Dose ◽  
Assembly Language ◽  
Processing System ◽  
Principal Component ◽  
Digital Processing ◽  
Image Analysis System ◽  
Black And White ◽  
Analysis System ◽  
Dose Imaging

We have assembled an image processing system for use with our high resolution STEM for the particular purpose of working with low dose images of biological specimens. The system is quite flexible, however, and can be used for a wide variety of images.The original images are stored on magnetic tape at the microscope using the digitized signals from the detectors. For low dose imaging, these are “first scan” exposures using an automatic montage system. One Nova minicomputer and one tape drive are dedicated to this task.The principal component of the image analysis system is a Lexidata 3400 frame store memory. This memory is arranged in a 640 x 512 x 16 bit configuration. Images are displayed simultaneously on two high resolution monitors, one color and one black and white. Interaction with the memory is obtained using a Nova 4 (32K) computer and a trackball and switch unit provided by Lexidata.The language used is BASIC and uses a variety of assembly language Calls, some provided by Lexidata, but the majority written by students (D. Kopf and N. Townes).

Chemical Classification and Particle Sizing of Foundry Sands

1985 ◽  
Vol 43 ◽  
pp. 388-389
Author(s):  
D.S. DeMiglio
Keyword(s):  
Image Analysis ◽  
Energy Dispersive Spectrometer ◽  
Image Analysis System ◽  
Representative Sampling ◽  
Foundry Sands ◽  
Large Atomic Number ◽  
Backscattered Electron ◽  
Sand Particles ◽  
Analysis System ◽  
Reclamation System

Much progress has been made in recent years towards the development of closed-loop foundry sand reclamation systems. However, virtually all work to date has determined the effectiveness of these systems to remove surface clay and metal oxide scales by a qualitative inspection of a representative sampling of sand particles. In this investigation, particles from a series of foundry sands were sized and chemically classified by a Lemont image analysis system (which was interfaced with an SEM and an X-ray energy dispersive spectrometer) in order to statistically document the effectiveness of a reclamation system developed by The Pangborn Company - a subsidiary of SOHIO.The following samples were submitted: unreclaimed sand; calcined sand; calcined & mechanically scrubbed sand and unused sand. Prior to analysis, each sample was sprinkled onto a carbon mount and coated with an evaporated film of carbon. A backscattered electron photomicrograph of a field of scale-covered particles is shown in Figure 1. Due to a large atomic number difference between sand particles and the carbon mount, the backscattered electron signal was used for image analysis since it had a uniform contrast over the shape of each particle.

Our Bodies, Whose Property?

2013 ◽  
Author(s):  
Anne Phillips
Keyword(s):  
Labor Markets ◽  
Personal Autonomy ◽  
The Body ◽  
Body Parts ◽  
Complex Issue ◽  
Human Organs ◽  
Property Owners ◽  
The Common ◽  
The Difference ◽  
The Right

No one wants to be treated like an object, regarded as an item of property, or put up for sale. Yet many people frame personal autonomy in terms of self-ownership, representing themselves as property owners with the right to do as they wish with their bodies. Others do not use the language of property, but are similarly insistent on the rights of free individuals to decide for themselves whether to engage in commercial transactions for sex, reproduction, or organ sales. Drawing on analyses of rape, surrogacy, and markets in human organs, this book challenges notions of freedom based on ownership of our bodies and argues against the normalization of markets in bodily services and parts. The book explores the risks associated with metaphors of property and the reasons why the commodification of the body remains problematic. The book asks what is wrong with thinking of oneself as the owner of one's body? What is wrong with making our bodies available for rent or sale? What, if anything, is the difference between markets in sex, reproduction, or human body parts, and the other markets we commonly applaud? The book contends that body markets occupy the outer edges of a continuum that is, in some way, a feature of all labor markets. But it also emphasizes that we all have bodies, and considers the implications of this otherwise banal fact for equality. Bodies remind us of shared vulnerability, alerting us to the common experience of living as embodied beings in the same world. Examining the complex issue of body exceptionalism, the book demonstrates that treating the body as property makes human equality harder to comprehend.

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