Background: In accordance with the circular economy principles (reduce, reuse and recycle), the company Ekstera d.o.o. started to develop a unified process with which it introduced two parallel work processes. In addition to the company's primary production activity, where "waste," which should be handed over to authorized waste collectors as hazardous waste is generated, parallel production was introduced. Using "waste," the company thus made raw material suitable for immediate use as input material for steelworks and foundries. Methods: A bigger problem than the technical development of the final product (Nickel alloy powder briquettes), which lasted less than two years, proved to be the legal inclusion of this procedure due to strict and vague environmental regulations and conditions arising from them. Through experiments, we led the process of recycling Nickel.........

Keywords: Nickel alloy, dust powder, recycling, carbon footprint reduction

[1]. European Commissionv (2007). COM (2007) 59: Communication from the Commission to the Council and the European Parliament on the Interpretative Communication on waste and by-products
[2]. Europian Commission (2007). REACH legal text. European Parliament and Council Regulation (EC) No 1907/2006 (Corrigendum 29 May 2007)
[3]. EoW: Regulation (EU) št.333/2011
[4]. Europian Parliament, (2021). Available at: https://www.europarl.europa.eu/news/sl/headlines/economy/20151201STO05603/krozno-gospodarstvo-definicija-pomen-in-prednosti
[5]. Griemes et al., 2008. Report on the Environmental Benefits of Recycling, Imperial College London.

In order to answer the research questions, it is doubtful that researcher should be able to collect data from all cases. Thus, there is a need to select a sample. This paper presents the steps to go through to conduct sampling. Furthermore, as there are different types of sampling methods, researcher needs to understand the differences to select the proper sampling method for the research. This paper also present different types of sampling techniques and methods. "Hypothesis testing is an integral and the most important part of the Research Methodology". In this paper, we introduce the overview of hypothesis and types of hypothesis. Researcher need the perfect method to reach towards the best conclusion so we also discuss the hypothesis testing steps, and various tools used for hypothesis testing so that researcher can take a perfect decision

Keywords: Sampling, Sampling techniques, Hypothesis, Hypothesis testing, Hypothesis testing tools

[1]. Joginder Kaur," Techniques Used in Hypothesis Testing in Research Methodology – A Review", International Journal of Science and Research, Volume 4 Issue 5, May 2015.
[2]. KOLAWOLE, Yaoundé O," HYPOTHESES AND HYPOTHESIS TESTING", 30th June, 2017
[3]. Frank Emmert-Streib and Matthias Dehmer," Understanding Statistical Hypothesis Testing: The Logic of Statistical Inference", 12 August 2019.
[4]. M. Shafiqur Rahman," TEACHING HYPOTHESIS TEST IN AN EASY WAY", International Journal of Business, Economics and Management, December 2015.
[5]. Ashok Kumar," HYPOTHESIS TESTING IN MEDICAL RESEARCH: A KEY STATISTICALAPPLICATION", Journal of Universal College of Medical Sciences (2015) Vol.03 No.02 Issue 10.

Catamarans and trimarans may have problems in road transportation or marina berthing because of their large width, therefore several folding mechanisms have been designed to reduce width. In this paper new vertical folding mechanisms are presented which are simpler and more stable than many existing. In one version the outriggers are fixed to the connecting beams of a trimaran and rotate during the folding process, in the other version the outriggers are hinged to the connecting beams and remain virtually upright. In one variant 2 struts are connected to 2 hinges on top of a trimaran main hull - in the other the struts are connected to one common hinge. The other ends of the struts are pivotally hinged to connecting beams, which rotate around a common central hinge. In all these assemblies.........

Keywords: folding mechanism, catamaran, trimaran, multihull

[1]. S. Stange, Patent No. DE102005034981B3, granted 22.11.2006, Mehrrumpfwasserfahrzeuge variabler Breite mit 2 bewohnbaren Schwimmern [Multihull Crafts of Variable Width with 2 Habitable Floats] [2] P. G. Carrieri, Patent No. WO2006/013591, granted 09.02.2006, Multihull Boat with Variable Width [3] I: Lindsay, Patent No. US3937166A, granted 10.02.1976, Float Connection Assemblies for Multi-Hulled Boata [4] I. Farrier, Patent No. US5038697A, granted 15.08.1991, Variable Beam Float Connection Assemblies for Trimarans