Вариационный подход к определению динамической прочности материала

The problem of the determination of material strength properties through the Kolsky experimental technique is considered. Small size specimens of M1 copper alloy are tested on a split Hopkinson pressure bars equipment. The experimental data of tensile tests observed under both dynamic and quasi-static conditions are analysed within the framework of the incubation time criterion and the Sign-Perturbed Sums method. It is shown that the influence of a test performance error is considered in the data treatment procedure based on the developed method.

Cavernous sinus dural arteriovenous fistula accessed through a straightened superficial temporal vein

Background: Transvenous embolization through the inferior petrosal sinus (IPS) is the most common treatment procedure for cavernous sinus dural arteriovenous fistula (CSDAVF). When the IPS is inaccessible or the CSDAVF cannot be treated with transvenous embolization through the IPS, the superficial temporal vein (STV) is used as an alternative access route. However, the approach through the STV is often challenging because of its tortuous and abruptly angulated course. We report a case of recurrent CSDAVF which was successfully treated using a chronic total occlusion (CTO)-dedicated guidewire and by straightening the STV. Case Description: A 63-year-old woman was diagnosed with CSDAVF on examination for oculomotor and abducens nerve palsy. She was initially treated with transvenous embolization through the IPS. However, CSDAVF recurred, and transvenous embolization was performed through the STV. A microcatheter could not be navigated because of the highly meandering access route through the STV. By inserting a CTO-dedicated guidewire into the microcatheter, the STV was straightened and the microcatheter could be navigated into a shunted pouch of the CS. Finally, complete occlusion of the CSDAVF was achieved. Conclusion: If an access route is highly meandering, the approach can be facilitated by straightening the access route with a CTO-dedicated guidewire.

Continuous High-Dose (6 mg) vs. Low-Dose (3 mg) Intravitreal Ganciclovir for Cytomegalovirus Retinitis After Haploidentical Hematopoietic Stem Cell Transplantation: A Randomized Controlled Study

Purpose: To evaluate the safety and efficacy of continuous high-dose (6 mg) intravitreal ganciclovir injections (IVG) for cytomegalovirus (CMV) retinitis (CMVR) after haploidentical hematopoietic stem cell transplantation (Haplo-HSCT), and to explore factors that may influence the treatment procedure.Design: Prospective, randomized, single-blinded, positive-controlled, interventional, comparative study.Methods: A total of 22 patients with CMVR (32 eyes) were randomized to either high-dose group (IVG 6 mg weekly) or low-dose group (IVG 3 mg given twice weekly for 2 weeks as induction phase and weekly thereafter as maintenance phase). Patients who were recorded any positive CMV DNAemia or other active CMV diseases and needed systemic anti-CMV treatment during the study period were excluded. The vision outcome, variables of the treatment procedure, and incidence of complication and CMVR recurrence were analyzed and compared. Logistic regression was applied to determine the factors that may have an impact on the treatment process at baseline.Results: Compared to the low-dose group, the high-dose group resulted in a median of two less intravitreal injections (4 vs. 6 times, respectively, P = 0.016), while the rate of vision stability or improvement (81.2 vs. 87.5%), the incidence of complication (6.2 vs. 18.8%), and CMVR recurrence (12.5% vs. 6.2%) were similar (all P > 0.05). No drug-related toxicity was observed. Initial aqueous CMV-DNA load (OR: 6.872, 95% CI: 1.335–35.377, P = 0.021) and extension of lesion (OR: 0.942, 95% CI: 0.897 to .991, P = 0.020), but not dosing regimen (P = 0.162), were predictors of the treatment duration.Conclusions: Continuous high-dose regimen was well tolerated and resulted in less intravitreal injections, with similar vision outcomes and safety profiles. The clinical course of CMVR after Haplo-HSCT was determined by its own nature at baseline and could not be modified by treatment protocols under consistent immune background.

General principles governing record taking in patients with cleft lip and palate

(WHO meetings on International Collaborative Research on Craniofacial Anomalies).One of the most common congenital anomaly we come across is the Cleft Lip and palate where affected children suffer from range of functional as well as aesthetic problems. Cleft lip and palate is a multifunctional disease associated with environmental factors. Management of cleft is a complex procedure and demands co-operation among experts from different fields. Clinical treatment procedure extends from beginning of birth, to achieving skeletal maturity effectively.

STUDY OF SYNOVIAL FLUID IN DIAGNOSIS OF JOINT DISEASES IN A TEACHING HOSPITAL

Background: Analysis of synovial uid has been recommended as a routine procedure to assist in the diagnosis of arthritis. Arthritis can be either a monoarticular or polyarticular lesion leading to morbidity, affecting all ages . Aim of the study: To study synovial uid analysis in the diagnosis of joint diseases in a teaching hospital. Materials and methods: Prospective study was done on synovial uid samples over a period of two years at the Department of Pathology. ACS medical college ,Chennai for duration of 6 months ie, from February 2021 to August 2021. Results: Majority of the cases were osteoarthritis constituting 33.3 % .Rheumatoid arthritis constituted 20%..Chronic nonspecic synovitis were noted in 30% cases .01 case of Traumatic arthritis and 02 cases of Tubercular arthritis were noted. Conclusion: Synovial uid analysis will give us an idea about the differential diagnosis of joint diseases. Synovial uid aspiration should be done for the analysis and also used as a treatment procedure of synovial inammation.

Advances in anthropomorphic thorax phantoms for radiotherapy: a review

A phantom is a highly specialized device, which mimic human body, or a part of it. There are three categories of phantoms: physical phantoms, physiological phantoms, and computational phantoms. The phantoms have been utilized in medical imaging and radiotherapy for numerous applications. In radiotherapy, the phantoms may be used for various applications such as quality assurance (QA), dosimetry, end-to-end testing, etc. In thoracic radiotherapy, unique QA problems including tumor motion, thorax deformation, and heterogeneities in the beam path have complicated the delivery of dose to both tumor and organ at risks (OARs). Also, respiratory motion is a major challenge in radiotherapy of thoracic malignancies, which can be resulted in the discrepancies between the planned and delivered doses to cancerous tissue. Hence, the overall treatment procedure needs to be verified. Anthropomorphic thorax phantoms, which are made of human tissue-mimicking materials, can be utilized to obtain the ground truth to validate these processes. Accordingly, research into new anthropomorphic thorax phantoms has accelerated. Therefore, the review is intended to summarize the current status of the commercially available and in-house-built anthropomorphic physical/physiological thorax phantoms in radiotherapy. The main focus is on anthropomorphic, deformable thorax motion phantoms. This review also discusses the applications of three-dimensional (3D) printing technology for the fabrication of thorax phantoms.

Intervention and Evocative Design Development (IEDD): Design experience through post medical treatment and rehabilitation

In medical and health care, product design and development play a key role in providing the optimal treatment and diagnosis with significant consideration of human factors, ergonomics, and practicality that meet the technical and clinical standards. Greater design attention through intervention and protocol analysis extended as a vital mechanism to evaluate the design efficacy throughout the treatment procedure is required. Design Intervention and Evocative Design Development (IEDD) is a materially innovative method explicitly oriented towards exploring the contemporary new understandings as a next-level towards the feasible solution. Keywords: Design; Clinical; Human Factors; Procedures; Protocols eISSN: 2398-4287 © 2021. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BYNC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v6iSI6.3046

Full Mouth Rehabilitation – The Enigma Continues

‘ No thi ng Ch an ge s i f No t hi ng Ch an ge s’ Treating a case of full mouth rehabilitation has remained a challenge till date. Dentistry has witnessed many advancements in terms of material science, technology and treatment procedures. What has not evolved is the thought process of application of these newer methods and technology. Any treatment procedure performed on a patient is not a straightforward mathematical calculation which can be implemented in a specified manner. Clinical processes, especially a case of full mouth rehabilitation requires comprehensive knowledge and understanding of the stomatognathic system. The word rehabilitation in itself conveys responsibility. A lot is involved at both the ends - the receiver (patient) and the donor (the rehabilitation specialist). The oxford dictionary defines rehabilitation as ‘The action of restoring someone to health or normal life through training and therapy after imprisonment, addiction, or illness.’ 1 It is a great responsibility on restoring dentist to bring the abnormal and compromised oral functions back on track. The multidisciplinary dimension of the treatment cannot be ignored. Although the culmination of an elaborate treatment is by a restoring specialist which happens to be prosthodontist most of the time, other specialists such as endodontist, periodontist, oral surgeon, orthodontist and an oral radiologist play a significant role throughout the planning and execution. It is advisable to seek expert opinion and include specialty procedures whenever deemed necessary.