scholarly journals OSOBENNOSTI POKAZATELEY UL'TRASONOMETRII ZhENSKOGO NASELENIYa GORODA ChELYaBINSKA

2005 ◽  
Vol 8 (2) ◽  
pp. 25-28
Author(s):  
E N USOL'TsEVA ◽  
O V SAFRONOV ◽  
E V BRYuKhINA

Characteristic feature of ultrasonic densitometry have been investigated in women,s population of Chelyabinsk (n=200) from 25 to 65 years old. We used domestically produced Echoosteometr-02. A basis of a body of the lower jaw became a new area for ultrasonic densitometry. We can recommend a lower jaw as a new area for ultrasonic densitometry taking into account high pithiness of data in a combination with simplicity of research. Traditional localizations have been also applied: proximal phalanges of the hand, patella, tibia diaphysis and calcaneus bones of the right and left sides. We have established a "peak" values of a speed of the ultrasound wave for the given bones. Also we have found that a tubular bones and a large spongy bone - a lower jaw - possess the highest speed of an ultrasound wave, and the speed was mach less in a small spongy bones, that is caused by their anatomic structure. Ultrasound densitometry parameters of the peripheral skeleton start to reduce from 40-50 years behind exception patella - from 55 years. The lowest values were in group of women of 60-65 years. The rates of ultrasonic densitometry received by us are possible to use for women population of Chelyabinsk.

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Takashi Matsushita ◽  
Tomoyasu Kumano ◽  
Kazuhiko Takehara

Primary cutaneous follicle center lymphoma (PCFCL) accounts for the majority of primary cutaneous B-cell lymphomas. We report a 60-year-old womanwith PCFCL. She had a red nodule (25 × 25 mm) on the right side of the lower jaw. She was diagnosed with PCFCL by skin biopsy. And then, she was treated with radiation therapy (total 30.6 Gy), which completely eliminated the nodule. Our case suggests that radiation therapy may be a first choice for PCFCL patients with a solitary lesion or localized lesions.    


2021 ◽  
Vol 26 (2) ◽  
pp. 144-149
Author(s):  
L. V. Dubova ◽  
S. S. Prisyazhnykh ◽  
N. V. Romankova ◽  
D. I. Tagiltsev ◽  
G. V. Maksimov

Relevance. The purpose of the research is to improve the functional diagnosis protocol in prosthodontic treatment of patients with TMD.Materials and methods. The optimal position of the mandible was determined for each patient by two methods: 1) TENS (transcutaneous electrical nerve stimulation) and 2) TENS + kinesiography. Then, the cone-beam computed tomography (CBCT) data were analyzed to determine the most physiological position of the condyles.Results. The analysis of the CT scans of patients without TMD (control group) showed that the right and left condyles occupy an anterior or central symmetrical position relative to the glenoid fossa. In the first and second methods, the condyles occupy an anterior or central position, which is the most optimal position of the lower jaw for the manufacturing of an occlusal stabilization splint. The statistical coefficients allowed us to determine that the second method was more accurate, since the obtained values were lower than those of the first method.Conclusion. Based on the results of this study, we can conclude that the improvement of the protocol, namely a new method for determining the optimal position of the mandible is more time-consuming, but more accurate and allows increasing the effectiveness at all stages of treatment of patients with this pathology.


Author(s):  
R. K. Arni ◽  
S. K. Gupta

Abstract This paper describes a systematic approach to analyzing manufacturability of parts produced using Solid Freeform Fabrication (SFF) processes with flatness, parallelism and perpendicularity tolerance requirements on the planar faces of the part. SFF processes approximate objects using layers, therefore the part being produced exhibits stair-case effect. The extent of this stair-case effect depends on the angle between the build orientation and the face normal. Therefore, different faces whose direction normal is oriented differently with respect to the build direction may exhibit different values of inaccuracies. We use a two step approach to perform the manufacturability analysis. We first analyze each specified tolerance on the part and identify the set of feasible build directions that can be used to satisfy that tolerance. As a second step, we take the intersection of all sets of feasible build directions to identify the set of build directions that can simultaneously satisfy all specified tolerance requirements. If there is at least one build direction that can satisfy all tolerance requirements, then the part is considered manufacturable. Otherwise, the part is considered non-manufacturable. Our research will help SFF designers and process providers in the following ways. By evaluating design tolerances against a given process capability, it will help designers in eliminating manufacturing problems and selecting the right SFF process for the given design. It will help process providers in selecting a build direction that can meet all design tolerance requirements.


2020 ◽  
Vol 34 (4) ◽  
pp. 95-104
Author(s):  
D.V. Shchehlov ◽  
V.M. Zahorodnii ◽  
I.V. Altman ◽  
N.V. Kiselyova ◽  
I.I. Kashkish

The objective – to presents the observation of combined treatment of a patient with arteriovenous malformation of the lower jaw.A man, 21 years old, was hospitalized in the Scientific-Practical Center of Endovascular Neuroradiology NAMS of Ukraine with complaints of bleeding from a tooth socket after an attempt to remove the 6th tooth (first painter) of the lower jaw on the left. According to the performed survey radiography of the lower jaw, an aneurysmal bone cyst was revealed in the body of the lower jaw on the left, corresponding to the localization of bleeding. According to cerebral angiography, an arteriovenous malformation of the lower jaw was revealed on the left, the afferent arteries of which were: the right facial artery (a branch of the right external carotid artery (ECA)), the left facial artery (a branch of the left ECA), the lower alveolar artery, the superior-posterior alveolar artery (branches of the maxillary artery ‒ the terminal branch of the left ECA) with drainage into a vein, which was located in the body of the lower jaw. In order to exclude the malformation from the bloodstream and prevent bleeding, a controlled embolization of the malformation was performed using non-spherical emboli – polyvinyl alcohol (PVA) particles from Cook, USA. Using a transfemoral approach, a guide catheter was inserted into the orifice of the ECA, then a Headway 27 microcatheter (Microvention, USA) was passed through it along a Traxes 14 guide wire (Microvention, USA), the afferent arteries of the malformation were selectively cathete-rized in turn, and embolization was performed after superselective angiography. The patient was discharged in a satisfactory condition. Two weeks after the operation, the bleeding resumed. The performed control cerebral angiography revealed a relapse of the malformation with a change in its angioarchitectonics ‒ the filling of the malformation in the late arterial and venous phases of cerebral blood flow was noted. Re-embolization was performed using PVA emboli (Cook), which was supplemented by transcutaneous puncture of the drainage vein in the mandible and its embolization with histoacryl (B. Braun, Germany) and lipiodol (Guerbet, France) in a 1 : 1 ratio. Results. As a result of using this technique, it was possible to turn off the malformation completely. For 6 months from the moment of surgery, no bleeding was noted, and subsequently the patient had a tooth removed without complications.Conclusions. The proposed method for treating arteriovenous malformation of the lower jaw, proposed in this case, showed the effectiveness of a combination of endovascular embolization in combination with transcutaneous embolization of the draining vein and can be successfully used to treat this pathology.


2019 ◽  
Vol 15 (1) ◽  
pp. 109-116
Author(s):  
Сергей Лазарев ◽  
Sergey Lazarev ◽  
Тху Чанг Ле ◽  
Thu Chang Le

Subject. Going upright in human evolution changed the position of the spinal column and head. The position of the spine affects the occlusion through the rotational movements of the first cervical vertebra. The dentofacial system also evolved: the gaps disappeared between the canines and the adjacent teeth; sex differences of teeth were almost erased. As a result, the chewing became more adapted to speech reducing the dominant influence of the canines. Food influenced on the shape of teeth, the occlusion, the lower jaw movement. People use premolars and first molars for chewing soft food, which diminished the chewing efficiency of second molars. The function-dominant chew side also develops dentofacial system. Aim ― research regularities of jaw chewing in stress strain. Methods. Silicone occlusion impressions were obtained from each subject in stress conditions and physical activities. Results. Subjects with a dominant right hand have more amounts of match supracontacts at the right jaw side than at the left one. At opposite side of the spectrum, subjects with a dominant left hand have more amounts of match supracontacts at the left jaw side than at the right one. Ambidextrousnesses have approximately equal amounts at the right and left jaw sides. This is evidence of the force movement at the dominant chewing side. Conclusion. While subjects were falling, the low jaw moved forward resting up against on the canines. In other words, in weightlessness condition the falling subjects were searching for the point of support, which was the occlusion. In the results, it redirected and reduced the kinetic energy of falling bodies and levers of operating forces. The number of supracontact points during lifting is less than in the position of weightlessness. In other words, during the weight lifting the subjects have support points: the lower back and legs. And the occlusion becomes the third point of support only when lifting the extreme physical exertions.


Author(s):  
Asma Beyki ◽  
Mahmud Zardast ◽  
Zahra Nasrollahi

Invasive aspergillosis of the paranasal sinuses is a rare and often misdiagnosed disease. This study reported a case of max- illary aspergillosis with a complete  headache and eye pain after tooth extraction with a large abscess in the relative jaw. Tenderness in the right temporal, lower jaw numbness and right eye proptosis was found. Histopathological examination was the suggestion of maxillary sinusitis with a fungal ball of aspergillus.


2021 ◽  
Vol 31 (Supplement_3) ◽  
Author(s):  
E Maeckelberghe

Abstract Andrew Jameton in 1984 coined the concept of moral distress as: “knowing what to do in an ethical situation, but not being allowed to do it” This original description presupposes that the right moral act can be identified and precludes situations of doubt and uncertainty. The 1984 definition emphasizes barriers that make it impossible for someone to do what they ought to do. Whereas Jameton in a revision in 2013 of his original concept emphasized reduction of the psychological dimensions, Peter& Liaschenko stress the element of moral agency. Moral distress then is a threat to the moral integrity of the professional. This requires three-step ananlysis: first, what is the moral question?; two, what are morally adeguate answers to this question?; three, what ethically appropriate actions are under pressure in the given situation? This will be illustrated with examples from the COVID-19 pandemic.


2019 ◽  
Vol 4 (1) ◽  
pp. 10-28
Author(s):  
Sándor Bodzás ◽  
Béla Krakkó

The aim of this publication is to determine the OEE (Overall Equipment Efficiency) indicator for 5 axes milling machine found at Diehl Aircabin Hungary Ltd. for the present and future state. Based on this value, the utilization of the machine for the given production amount can be calculated. With the optimal choice of the right production parameters (the number of cuts, feeding, depth of cut, etc.) greater productivity can be achieved i.e. the machine main time (time of cutting) will be less. The possibilities of the reduction of the machine time will be analysed and calculated. Setting of the appropriate technological parameters the machine main time could be decreased. The calculation of the machine main time will be determined for the most frequent manufacturing technologies.


2018 ◽  
Vol III (I) ◽  
pp. 1-9
Author(s):  
Muhammad Rizwan ◽  
Manzoor Ahmad ◽  
Syed Asif Anwar Bukhari

Soon after its creation, Pakistan confronted many issues including refugee problem, scarcity of able political leadership, absence of mutual consensus between both wings of the country and confusing nature of the relationship between Islam and state etc. took almost nine years to frame the permanent constitution for Pakistan. Constitution, the basic document of a state, determines the shape of its laws, structure of governance and system of rights and duties. The effectiveness of a constitution is judged by its practicability in the given area where it is enforced by the state machinery. Although, all civilized states of the world do possess a constitution, yet a good constitution is one which must protect the basic human rights by ensuring the independence of judiciary. Due to countless hurdles at the beginning of its journey, Pakistan’s constitutional development in the right direction could not take place. The main objective of the present study is to provide deep insight into the events and factors causing a delay in the constitution-making for the newly created state of Pakistan. The various events which took place from 1947 to 1956 have been analyzed in a subtle way.


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