Doppler backscattering systems on the Globus-M2 tokamak

Doppler backscattering (DBS) was successfully previously used on the Globus-M tokamak. The diagnostic was utilised in the form of either a single-frequency or a four-frequency dual homodyne system. It was used primarily for the study of zonal flows, filaments and Alfvén eigenmodes. These phenomena are worth being studied both on the periphery and in the core region of the plasma in a tokamak. For this specific reason two multifrequency DBS systems were installed on the upgraded Globus-M2 tokamak. The first four-frequency system with dual homodyne detection had already been used on the Globus-M tokamak and has lower probing frequencies which provide measurements from the periphery plasma. The second and new six-frequency DBS system was installed with a non-linear transmission line that was adapted to generate probing signals at frequencies 50, 55, 60, 65, 70 and 75 GHz. In general, the range of probing frequencies corresponds to the region of critical plasma densities from 5 × 1018 to 7 × 1019 m−3 at normal incidence. The pyramidal horn antennas are located inside the vacuum vessel with a special cardan-like rotator outside the camera so as to tilt antennas in the toroidal and poloidal directions. A previously developed code was applied to simulate 3D raytracing for all frequency channels. Calculations were carried out for different angles of incidence and for different electron density distributions in order to investigate the possibilities of the implementation of radial and poloidal correlation Doppler reflectometry. Examples of the DBS system application for study of plasma properties in the Globus-M2 tokamak are presented.

A Proposal to Distinguish DDoS Traffic in Flash Crowd Environments

A Flash Crowd (FC) event occurs when network traffic increases suddenly due to a specific reason (e.g. e-commerce sale). Despite its legitimacy, this kind of situation usually decreases the network resource performance. Furthermore, attackers may simulate FC situations to introduce undetected attacks, such as Distributed Denial of Service (DDoS), since it is very difficult to distinguish between legitimate and malicious data flows. To differentiate malicious and legitimate traffic we propose applying zero inflated count data models in conjunction with the Correlation Coefficient Flow (CCF) method – a well-known method used in FC situations. Our results were satisfactory and improve the accuracy of CCF method. Furthermore, since the environment toggles between normal and FC situations, our method has the advantage of working in both situations.

Are investigators’ access to trial data and rights to publish restricted and are potential trial participants informed about this? A comparison of trial protocols and informed consent materials

Objectives To determine to which degree industry partners in randomised clinical trials own the data and can constrain publication rights of academic investigators. Methods Cohort study of trial protocols, publication agreements and other documents obtained through Freedom of Information requests, for a sample of 42 trials with industry involvement approved by ethics committees in Denmark. The main outcome measures used were: proportion of trials where data was owned by the industry partner, where the investigators right to publish were constrained and if this was mentioned in informed consent documents, and where the industry partner could review data while the trial was ongoing and stop the trial early. Results The industry partner owned all data in 20 trials (48%) and in 16 trials (38%) it was unclear. Publication constraints were described for 30 trials (71%) and this was not communicated to trial participants in informed consent documents in any of the trials. In eight trials (19%) the industry partner could review data during the trial, for 20 trials (48%) it was unclear. The industry partner could stop the trial early without any specific reason in 23 trials (55%). Conclusions Publication constraints are common, and data is often owned by industry partners. This is rarely communicated to trial participants. Such constraints might contribute to problems with selective outcome reporting. Patients should be fully informed about these aspects of trial conduct.

Mughal Men’s Head Ornaments with an Emphasize on Turban Ornaments and their Connection with European Aigrette

Jewelry is main aspect of dressing and Mughal Jewelry is a fascinating theme to explore. Its styles can be traced through the paintings that clearly give accurate information of the style and variety of ornaments that were used during the seventeenth and eighteenth centuries. Jewelry is considered the feminine adornment part but miniature shows the beautiful ornamentation of Mughal emperors also with variation in sizes and design. This article discusses the Mughal male head ornaments and study is focused on the turban ornamentations. As man’s turban is his sacrosanct property and variety of turban ornaments were used by Mughals. This paper is an attempt to understand and examine that how the Mughal turban ornament develops from simple feather to piece of complex jewelry designs and how other culture helps in its development. Why Mughal emperors worn such gemstones in headdress and which techniques were used for its decoration? Is there any specific reason of using such gemstones or just for ornamentations purposes? In the end it concludes that sarpech shapes helps in the development of European aigrette and became a part of European jewelry that later helped in the modification of turban ornaments and Euro-Indian sarpech-aigrette appeared with more delicate style.

Stubble Burning and its Impact on Air Quality in Delhi NCT: A Case Study

Stubble burning is now considered to be one of the major activities affecting air quality because it is one of the major sources of aerosol as well as gaseous pollution. There are two main reasons for biomass burning, first one is that there is a very short window of time between the harvesting and the wheat sowing of the wheat. The second being, removing the paddy residue that has remained on the field is a time-consuming job. The time period from harvesting to sowing being very low and the labor is either very expensive or unavailable this leads to the only easiest option that the farmer has i.e. burning the residue right on the field after harvest so that the farmers can quickly prepare the land for the next sowing. This method is very cheap and takes less time that’s why farmers use this method. For this specific reason with the onset of winter, stubble fires become rampant in north India. Stubble-burning emissions contain toxic chemicals which cause respiratory problems as well as diseases. The paper aims to examine the environmental impacts associated with stubble burning over the NCT of Delhi. The paper performs both qualitative and quantitative analysis on the statistical data pertaining to crop burning. The monthly variation for particulate matter (PM10 and PM2.5) and trace gases (NOx, CO, and SO2) during the stubble burning period (Sep-Nov) has also been studied and analyzed for 5 years (2015-19), and a noticeable increase in pollutant levels.

A Case of Pulmonary Tuberculosis Mimicking as Diffuse Alveolar Hemorrhage: A case report

Background: Pulmonary tuberculosis (TB) and diffuse alveolar hemorrhage (DAH) have some commonalities in several parts of the world. However, acute hemoptysis with diffuse alveolar shadows while a patient is on anticoagulant and antiplatelet therapy for a specific reason suggests DAH over TB. Case Presentation: In this case, a patient was presented with acute respiratory symptoms with hypoxia and bilateral alveolar shadows. He was treated for DAH at the initial encounter. However, on follow-up, he was confirmed having active pulmonary TB based on sputum acid-fast-bacilli culture. Conclusion: He was successfully treated with standard first-line anti-tubercular therapy and was subsequently declared cured. Pulmonary DAH with TB, in the absence of an underlying autoimmune disorder, is rare.

Reasons for Marijuana Use and Its Perceived Effectiveness in Therapeutic and Recreational Marijuana Users Among People Living with HIV in Florida

Therapeutic and recreational marijuana use are common among people living with HIV (PLWH). However, the distinction between perceived "therapeutic" and "recreational" use is blurred, with little information about the specific reasons for use and perceived marijuana effectiveness in adults with chronic conditions. We aimed to compare reasons for use and reason-specific perceived marijuana effectiveness between therapeutic and recreational users among PLWH. In 2018-2019, 213 PLWH currently using marijuana (mean age 48 years, 59% male, 69% African American) completed a questionnaire assessing their specific reasons for using marijuana, including the "main reason." Participants were categorized into one of three motivation groups: therapeutic, recreational, or both equally. For each specific reason, participants rated marijuana effectiveness as 0-10, with 10 being the most effective. The mean effectiveness scores were compared across the three motivation groups via ANOVA, with p <0.05 considered statistically significant. The most frequent main reasons for marijuana use in the therapeutic (n=63, 37%), recreational (n=48, 28%), and both equally (n=59, 35%) categories were "Pain" (21%), "To get high" (32%), and "To relax" (20%), respectively. Compared to recreational users, therapeutic and both equally users provided significantly higher mean effectiveness scores for "Pain," and "To reduce anger." The "Both equally" group also provided significantly higher mean effectiveness scores for "To feel better in general," "To get high," and "To relax" compared to the other two categories. There is a significant overlap in self-reported reasons for marijuana use in primarily therapeutic or recreational users. Perceived marijuana effectiveness was lowest among recreational users.

A Comparison on the Voltage Output of Al-Cu Primary Battery with its Electrolyte being Coca Cola With and Without Sugar

<div>For the primary battery, different electrolyte will affect the voltage output of the battery. In this paper, the influence of sugar on the output voltage was studied by taking Coca Cola as an example. The results show that there is a certain difference between the effect of electrolyte with and without sugar, but the specific reason is not clear, because the formula of beverage is a secret. Further experiments are needed to draw a conclusion.</div><p> </p><p> </p>

Preventing SARS-CoV-2 In-Hospital Infections in Cardiovascular Patients and Medical Staff: An Observational Study From the German Heart Center Berlin

Objective: COVID-19 is a highly contagious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Preventing in-hospital infections is crucial to protect patients and hospital staff.Methods: At the very beginning of the COVID-19 pandemic, the German Heart Center initiated obligatory wearing of surgical face masks for patients and employees, SARS-CoV-2 screening for all patients, and symptom-based testing for employees. In addition, access restriction, closure of outpatient departments, and postponing non-urgent procedures were implemented with community-initiated regulations.Results: During the observation period (03/16/2020–04/27/2020), 1,128 SARS-CoV-2 tests were performed in 983 persons (1.1 tests/person; 589 in patients and 394 in hospital employees). Up to 60% of the clinical workforce was tested based on symptoms and risk (62.5% symptoms, 19.3% direct or indirect contact to known COVID-19, 4.5% returnee from risk area, 13.7% without specific reason). Patient testing for SARS-CoV-2 was obligatory (100% tested). The overall prevalence of positive tests during the observation period was 0.4% (n = 5 out of 1,128 tests performed). The incidence of new infections with SARS-CoV-2 was 0.5% (n = 5 out of 983 individuals; three healthcare workers, two patients). No nosocominal infections occurred, despite a mean number of 14.8 in-hospital contacts.Conclusion: Comprehensive SARS-CoV-2 testing and surgical face masks for patients and hospital staff, in addition to others measures, are key factors for the early detection of COVID-19 and to prevent spreading in the vulnerable hospital population.

The Underrepresentation of Women in Moroccan Drama Movies: Through the Lens of Moroccan Male Filmmakers

This article strives to illuminate the interlinked relationship between movies, gender, and culture in the Moroccan context. More specifically, it aims at exploring the way women are misrepresented and misinterpreted in Moroccan drama movies, and particularly through the lens of Moroccan male filmmakers. For this specific reason, two Moroccan movies are selected, critically analyzed, and thoughtfully compared using qualitative content analysis. The first one is Okba Lik, a comedy-drama movie directed by Yassine Fennane and released in 2010. The second one is Hayat, a road trip drama movie directed by Raouf Sebbahi and released in 2017. Although the two movies are seven years apart, results have revealed that the culture of domineering men and subservient women is still prevalent in Moroccan drama movies. Both male filmmakers reinforce and perpetuate patriarchal ideology through the depiction of different forms of male domination and female subordination. Results have also shown that both movies make a significant contribution to the misrepresentation, dehumanization, objectification, and sexualization of Moroccan women.