The DESIGN AND BUILD OF A ROCKET STATIC THRUST TEST BASED ON A RASPBERRY PI 4.0

A flying vehicle, or guided missile that gets a boost or a rapid reaction to the propellant material from the engine output is called a rocket. The Indonesian Army really needs measuring tools to determine the ability of a rocket to be made. Therefore, in this study the author will design a temperature measuring device, thrust, and temperature on a rocket with a rocket load of 1 ton. The research method used is pure experiment. This study aims to find data on temperature, thrust, and temperature on the rocket in order to find out the specifications needed so that the rocket can fly as desired. The resulting data will later be sent to the raspberry pi to be processed in order to get the results which will later be printed on paper that will be used for a research on making rockets to help the Indonesian Army in developing defense equipment in the rocket field.

Conceptual Development of the Survival Vehicle: A Mechanism to Promote Resilience and Productivity of Relief Forces in Iran

INTRODUCTION: The major events occurring in recent decades have demonstrated that human societies are constantly affected by disasters which have always posed a threat to people's lives and properties. The present study aimed to introduce and expand the concept and capacities of "the survival vehicle" in Iran. This descriptive case study was conducted based on an applied research design. METHODS: This descriptive case study was conducted based on an applied research design. The library research method was used to develop theoretical backgrounds, and to collect information, the field method was employed with observation and researcher's information. FINDINGS: Considering that rescue forces have to be present at the scene of the disaster for consecutive days and weeks, they are directly exposed to threats, injuries, shortages, and problems as affected people are. Therefore, rescue experts and the Rapid Reaction Team of the Red Crescent Society of Kurdistan Province embarked on designing and using a vehicle called "Survival vehicle" taking into account the priorities in the affected area. This vehicle maintains the strength and motivation of relief forces by meeting their basic needs. Moreover, it increases the productivity of the relief forces and facilitates disaster management by strengthening the resilience of relief workers. CONCLUSION: As evidenced by the results of the present study, the use of the survival vehicle brings about numerous positive advantages for the members of the Red Crescent rapid response team, as well as relief and operational teams, at the time of crises.

An Upper Limit to O2 Evolution as Test for Radical and Nonradical Mechanisms for the Fenton Reaction

The origin of an upper limit to the amount of O2 evolved in the rapid reaction between Fe2+ and H2O2 was investigated at a high concentration of H2O2. Using a nonradical model, including the formation of a primary Fe2+–biperoxy complex with a diminished rate of formation of the active intermediate FeO2+, agreement has been reached for the first time with the experimental data obtained by Barb et al. A limited formation of O2 requires that a finite concentration of H2O2 should be present in the reaction mixture when [Fe2+] falls to zero. It has been shown that in Barb et al.’s model the condition for such a state ([Fe2+] = 0, [H2O2] > 0) does not exist. Free radical based models fail as mechanisms for the Fenton reaction.

Is the Idea of Common European Army Strengthening the Security?

The paper is focused on the perspective of the common European army. There are several visions about the common European army in the speeches of the highest political representatives of Germany, France, and European Commission. The term European army can be understood in broader or narrower sense. Author proposes theoretical models of the common European army with their possible limitations and opportunities to prove successful. - the European Rapid Reaction Force, the European Battlegroups, single European intergovernmental army. These models differ according to the intensity of defense cooperation and integration of the Member States. The paper is aimed at the individual aspects of the supranational model of the common European army. The role of such common European army is significant in several areas.

Increased Oxidative Stress In Allergic Rhinitis. Attention; Ruywayda Adams

There is a sample evidence that allergic disorders such as asthma, rhinitis and atopic dermatitis are mediated by oxidative stress. Excessive exposure to reactive oxygen and nitrogen species is the hallmark of oxidative stress and leads to damage of proteins, lipids and DNA. Oxidative stress occurs not only as a result of inflammation but also from environmental exposure to air pollution and cigarette smoke. The specific localization of antioxidant enzymes in the lung and the rapid reaction of nitric oxide with reactive oxygen species, such as superoxide, suggests that antioxidant enzymes might also function as cell-signalling agents or regulators of cell signalling.

Dowex 50W: A Green Mild Reusable Catalyst for the Synthesis of 2-Aryl Benzoxazole Derivatives in Aqueous Medium

In this work simple efficient, one pot and environmentally friendly method was developed for the synthesis of 2-Aryl-1H-benzoxazole derivatives at 80º C using ortho-aminophenol and various aldehydes. It has been found that Dowex50W is an effective catalyst to prepare moderate to high yield of a variety of benzoxazole derivatives through a clean and simple process. Aqueous medium, green methodology, rapid reaction, reusability of heterogeneous catalyst are the great advantages of this protocol.

Hydrothermal synthesis of nitrogen-doped carbon quantum dots from lignin for formaldehyde determination

A hydrothermal method for synthesis of lignin-based N-doped carbon quantum dots (NCQDs) proposes a mechanism for rapid reaction of NCQDs with formaldehyde to generate Schiff bases, which leads to enhanced FL emission and the observed blue shift.

A boron dipyrromethene (BODIPY) based probe for selective passive sampling of atmospheric nitrous acid (HONO) indoors

A BODIPY-based probe for the selective passive sampling of indoor air pollutant nitrous acid is characterized by UV-Vis and high-resolution MS, undergoes rapid reaction, and provides sensitive detection.