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Gyroscope oscillation depends on a rotor speed velocity

Published on: 7th April, 2023

In engineering, all moving rotating objects exhibit gyroscopic effects resulting from the action of an external torque on a rotating object. Gyroscopic effects are the action of a set of inertial moments and movements of an object around three axes of a three-dimensional Cartesian coordinate system. Moments of inertia are created by centrifugal and Coriolis forces, as well as the moment of change in angular momentum, which is expressed by their kinetic energy. The values of the moments of inertia directly depend on the speed of rotation of the object and its rotation around the axes. A short-term effect of an external load on a running gyroscope with displaced support can be manifested by its oscillations. The physics of gyroscope oscillations is not well explained in publications. This article describes the oscillations of a gyroscope by the action of the external torque which is its potential energy converting into kinetic energy of the inertial torques of the gyroscope. The conversion is carried out by the principle of mechanical energy conservation which is the same as for oscillations of a spring with a load.
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Evaluation in real life of the impact of photo-protection counseling in patients with actinic keratosis

Published on: 11th December, 2019

OCLC Number/Unique Identifier: 9272356956

Actinic keratosis (AK) are scaly lesions caused by chronic ultraviolet-induced damage to the epidermis which are a proxy for excessive sun-exposure [1] that may evolve into squamous cell carcinoma [2-7]. Therefore, there is a need or continuous surveillance of such patients along with adapted information for an effective photo-protection, practical couselling on photoprotection towards the defined population, i.e. elderly with actinic keratosis. Thus, patient observance and adhesion to the dermatologist recommendations become a real public health issue. In this context, we aimed to evaluate through a non-interventional, real-life observational study, the impact of photoprotection counseling by the dermatologist on patients attitude towards sun exposure
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Thirty days post-operative complications after Sleeve Gastrectomy, Gastric Bypass and Mini Gastric Bypass/one Anastomosis Gastric Bypass. Analysis of the Italian Society for Bariatric Surgery and Metabolic Disorders (S.I.C.OB.) database of 7 years time frame

Published on: 24th October, 2017

OCLC Number/Unique Identifier: 7317654732

Background: To date, the scientific community has mainly focused on outcomes of obesity surgery such as weight loss and resolution of associated complications. Adverse post-operative events and reoperation rates have been poorly reported even if they are a marker of surgical safety and therefore of great importance in guiding patients and surgeons in the choice of the more suitable operation. Methods: This retrospective multicenter observational study is based on the data extracted from the Italian Society of Bariatric Surgery and Metabolic Disorders (S.I.C.OB.) database, which covers almost all the bariatric operations performed in Italy. We analysed the 30 days post-operative complications occurring, in the period from 2009 to 2015, after Roux-en-Y Gastric Bypass (RYGB), Sleeve Gastrectomy (SG) and Mini Gastric Bypass/One Anastomosis Gastric Bypass (MGB/OAGB) qualitatively, quantitatively and on the basis of the Clavien-Dindo classification of surgical complications. Complications following surgeries were tested using the 95% confidence interval. Statistical analysis was performed with Statistical Analysis System (SAS). Results: In the 2009-2015 time frame, a total of 31,624 operations were performed of which 6,864 RYGB, 10,833 SG and 992 MGB/OAGB. The complication rate was 4.39 %, 4.04 % and 3.83% respectively. The most frequent complications were hemoperitoneum (0.9%) and perforation, fistula and dehiscence (1%) which were higher in SG when compared with RYGB (with a statistical significance) and when compared with MGB/OAGB (without a statistical significance). When dividing the complications by the different grades of the Clavien-Dindo classification, the only significant difference encountered, from a statistical standpoint, was between MGB/OAGB and SG. MGB/OAGB was associated with a lower grade I Clavien-Dindo complication rate (1.31% versus 2.34%). Conclusion: This study supports a safe profile of obesity surgey in Italy, along with positive bariatric outcomes. The rate of 30 days post-operative complications is progressively lower after MGB/OAGB (3.83%), SG (4.04%) and RYGB (4.39%) respectively. In particular, MGB/OAGB records statistically less low-grade Clavien-Dindo complications compared to SG and RYGB. Introduction
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Role of Helicobacter pylori in causing repeated Reinfection from Oral cavity in Chronic Prostatitis

Published on: 10th January, 2018

OCLC Number/Unique Identifier: 7338804767

Introduction: The refractoriness in treatment of chronic prostatitis (CP) could be due to repeated infection. This reinfection could be caused by Helicobacter Pylori present in human saliva. Methods: The oral cavities seem to be the important reservoirs for the reinfection. The transmission from these reservoirs could be stopped by avoiding contact between male urethera and saliva. Results: Three patients suffering from refractory symptoms of CP were advised to avoid contact between their urethera and saliva and were prescribed antibiotics. All patients had complete response. Conclusions: The oral cavity serve as reservoir of microorganisms (H.Pylori) which infects patient’s urethera repeatedly in patients of CP.
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New Approach for Analysing the Discrepancy of Pretherapeutic Tc-99m and Intra-therapeutic I-131 uptake in Scintigraphies of Thyroid Autonomies using a Parametric 3D Analysis Program

Published on: 2nd January, 2017

OCLC Number/Unique Identifier: 7286427358

Introduction: Radioiodine therapy is a standard procedure in thyroid autonomy treatment. Discrepancies in the visual comparisons of the scintigraphies prepared for this purpose using Tc-99m-O4- and I-131 have been known for years. In this study a new method is used to calculate and perform a quantitative comparison of both uptakes using subtraction analysis and 3D imaging. The results and their causes are discussed together with practice-relevant conclusions for better clinical results. Material and Methods: The new method was used in 38 patients with thyroid autonomies for the subtraction analysis of standardized pretherapeutic and intratherapeutic scintigraphies. The parametric distribution of activity was calculated absolutely and as a percentage and displayed three-dimensionally. These results were compared with the visual assessment of the different scintigraphies by the experts. Inclusion criteria were pretherapeutic and intratherapeutic hyperthyroidism without medication affecting the thyroid. The time difference between acquiring the scintigraphies was 28 days maximum. Results: Activity distribution was visually discrepant in 39.5% of cases. 60.5% displayed comparable uptake. The calculated values showed reversed results after applying the new method. The results using our method show a higher rate of calculated discrepancies compared with visual analysis. Conclusion: Accurate functional imaging of the thyroid is next to further aspects very important in establishing the diagnosis and deciding about the therapy activity for thyroid treatment. In combination with clinical symptoms and laboratory values, Tc-99m-O4 - scintigram can be used for an orientated, preliminary assessment of functional disorders of the thyroid. But because of the higher rate of found discrepancies, the solely use of Tc-99m-O4 - scintigram is not always capable for exact and reliable diagnosis. The known reason for this is most probably due to the different biokinetics of both radiopharmaceuticals, which can be imaged more sensitively with this method. Consequently, a scintigram should be performed in the pretherapeutic radioiodine uptake test. Despite higher costs and radiation exposure, alternatively, pretherapeutic use of other diagnostic iodine isotopes like I-123 or -124 should be discussed, because they could overcome the limitation of the different biokinetics. Following this approach the preliminary assessment using Tc-99m-O4 - scintigraphy can be precised and double checked to improve diagnostic confi dence and treatment results for a better outcome of the patients.  
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Impact of Diabetes on the Nutritional Status of CKD Patients

Published on: 9th January, 2017

OCLC Number/Unique Identifier: 7317654942

Background: Prevalence of malnutrition in Chronic Kidney Disease (CKD) patients is due to their lower appetite level. Diabetic patients experience polyphagia. Hence it is necessary to understand the impact of diabetes on the nutritional status of CKD patient. Aim: To compare the nutritious status between the CKD patients with and without diabetes. Objectives: To find out the impact of diabetes on the nutritional status of CKD patients. Method and Materials: A prospective random sampling method was adopted to select the subjects. Eighty CKD patients were divided equally into two groups. Tool which has been used to collect the data was SOAP format. Results: While comparing BMI between group 1(CKD without diabetes) and group 2(CKD with diabetes) it was noticed that the percentage of normal nourished subjects in group 2 were greater than that of group1. About 63% and 25% of subjects with CKD in group1 had normal BMI and grade 1 undernourished respectively. In group 2, about 75% and 10% of patients had normal BMI and grade 1 over nourished respectively. About 80% of subjects in group 2 were on insulin treatment. About 88% of subjects in group1 were anorexic and about 55% and 25% of subjects in group 2 had polyphagia and normal appetite respectively. The difference in the energy and protein intake between the two groups was statistically significant at p<0.01 level. Conclusions: It can be concluded from the above study that a better nutritional status was found in the CKD patients with Diabetes Mellitus (DM) than the CKD patients without DM which may be due to their normal appetite/ polyphagia, hence allowing a better food intake among group2 subjects. Weight gain in CKD with DM patients may be due to increase in fat mass which is subsequent to lipogenic effect of insulin.
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Photon Absorption characteristics of some selected Enzyme Inhibitors used in Cancer Research in the Energy range 1 keV-100 GeV

Published on: 21st August, 2017

OCLC Number/Unique Identifier: 7286352738

The absorption parameters such as total mass attenuation coefficients, molecular, atomic, and electronic cross sections, effective atomic numbers and electron densities were calculated for some selected enzyme inhibitors in the photon energy range from 1 keV up to 100 GeV. The changes in the absorption parameters were interpreted with the photoelectric effect, Compton scattering and pair production processes. It is observed that the 2-Imino-1-imidazolidineacetic acid enzyme inhibitor has more radiation shielding feature when compared to other chosen enzyme inhibitors. The present investigation is anticipated to be useful for researchers studying with radiation in several fields and cancer researchers.
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The different levels of depression and anxiety among Pakistani professionals

Published on: 5th March, 2020

OCLC Number/Unique Identifier: 8545199443

The present study was conducted to examine the relationship between work-stress, depression and anxiety among six major professionals (doctors, engineers, bankers, nurses, teachers, and lawyers). The inquiry included 260 professionals from different private and governmental sector organizations of Rawalpindi and Islamabad, Pakistan. Job Stress Scale and the subscales of Depression, Anxiety & Stress Scale for depression and anxiety were administered. Based on the hypotheses, a strong positive correlation was found between work stress and depression & anxiety. The current study revealed that stress at work not only prevailed among different Pakistani professionals on severely alarming levels but significantly contributed in developing depression and anxiety. 
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Gene Expression and Functional Analysis in Patients with Acute and Chronic Renal Allograft Rejection

Published on: 3rd November, 2023

Kidney transplantation is the therapy of choice for patients with end-stage kidney disease (ESKD). Nevertheless, the main limitation for long-term graft survival is immune-mediated rejection. Some authors have proposed that differences in immune effector mechanisms are influenced by underlying molecular mechanisms; thereby, the identification of differentially expressed genes in acute or chronic rejection in non-invasive samples such as urine may be essential for the identification of potential biomarkers and biological processes associated with allograft outcomes. Our aim was to explore differences in gene expression and functional categories associated with acute and chronic kidney rejection in blood, biopsy, and urine of kidney transplant patients using RNA-Seq. RNA was isolated and sequenced implementing standard protocols. Analyses were addressed to identify differentially expressed genes (DEGs) and Functional Categories of Gene Ontology comparing between samples. Then we focused on immune genes and pathways to identify their association with the allograft. We identified a significant transcriptional similarity between biopsy and urine, in comparison with blood in acute and chronic rejection. Functional analyses suggested an enrichment of immune processes such as antigen processing and presentation, and regulation of B cell receptor signaling pathway in blood of acute and chronic rejection, respectively. Additionally, we observed an increase in expression of chemokines in biopsy and urine of both outcomes along with an increase in chemokine receptors in blood. Our findings suggest that urine is suitable for identifying potential biomarkers and biological processes related to renal allograft rejection, as it shares a significant number of regulated genes with biopsy.
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String Theory without Extra Dimensions and Without Supersymmetry

Published on: 29th November, 2024

We know that until today no experiment observation has shown the existence of Supersymmetric particles [1] or additional dimensions.
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