Hydra collecting for citizen scientists v2

The freshwater cnidarian Hydra has been a model system for regeneration and developmental biology for over 250 years, but much remains unknown about their biodiversity and global distribution. As a citizen scientist, you can contribute to our understanding of Hydra in the wild by becoming a "Hydra Hunter". All it takes is a few simple materials and a little patience. Collecting Hydra in the wild can be challenging. You will certainly not find them everywhere you look. Keep in mind that NOT finding Hydra is still useful information because this will help us understand the environmental factors that effect their distribution. Metadata submission form: https://forms.gle/cAZCiiRCyE922G5t5 Please contact [email protected] for more information or to receive a Hydra collecting kit. Hydra collecting kits were purchased with a grant to Kimberly Sladek from the University of San Diego Associated Students Government. Thank you to Rob Steele for helpful feedback on this protocol. References: Campbell, R. D. (1983). Hydra Collecting. In H. M. Lenhoff (Ed.). Hydra: Research Methods. New York: Springer Science + Business Media. Martínez, D. E., et al. (2010). Phylogeny and biogeography of Hydra (Cnidaria: Hydridae) using mitochondrial and nuclear DNA sequence. Molecular Phylogenetics and Evolution, 57, 403-410. doi:10.1016/j.ympev.2010.06.016

Hydra collecting for citizen scientists v2

The freshwater cnidarian Hydra has been a model system for regeneration and developmental biology for over 250 years, but much remains unknown about their biodiversity and global distribution. As a citizen scientist, you can contribute to our understanding of Hydra in the wild by becoming a "Hydra Hunter". All it takes is a few simple materials and a little patience. Collecting Hydra in the wild can be challenging. You will certainly not find them everywhere you look. Keep in mind that NOT finding Hydra is still useful information because this will help us understand the environmental factors that effect their distribution. Metadata submission form: https://forms.gle/cAZCiiRCyE922G5t5 Please contact [email protected] for more information or to receive a Hydra collecting kit. Hydra collecting kits were purchased with a grant to Kimberly Sladek from the University of San Diego Associated Students Government. Thank you to Rob Steele for helpful feedback on this protocol. References: Campbell, R. D. (1983). Hydra Collecting. In H. M. Lenhoff (Ed.). Hydra: Research Methods. New York: Springer Science + Business Media. Martínez, D. E., et al. (2010). Phylogeny and biogeography of Hydra (Cnidaria: Hydridae) using mitochondrial and nuclear DNA sequence. Molecular Phylogenetics and Evolution, 57, 403-410. doi:10.1016/j.ympev.2010.06.016

Water denitrification by displacement biofiltration: transition of designed biofilter to the stationary mode

This work was aimed at creating a simple and reliable submersed biofilter for the decentralized treatment of nitrate-contaminated water. Denitrification of water was performed by the method of displacement (piston) biofiltration in specially designed U-shaped devices intended for residential use. The efficiency of biofiltration in these devices was evaluated under the conditions of their continuous service. The biofilter exhibited an essential increase in the rate of denitrification when transferring to the stationary mode. Hence, the consumer will have the opportunity of supplying big portions of nitrate-contaminated water into the biofilter in one gulp (pulse) and simultaneously getting the same amount of deeply denitrified water. This mode of biofilters exploitation prevents the clogging of the filtration bed and the channeling in it. The design of the created biofilters is rather simple. Materials with a minimum carbon footprint can be used to fabricate these devices.

Organocatalytic Asymmetric Tandem/Domino Reactions Towards Access to Bioactive Products

: Tandem and domino reactions constitute economic routes to complex molecules starting from simple materials. Especially, combining these powerful procedures to asymmetric catalysis allow a direct access to many elaborated chiral products, including important key intermediates in total syntheses of important biologically active compounds. A range of various types of chiral organocatalysts have already been successfully applied to such syntheses. This review presents major developments in the total synthesis of bioactive products based on the use of enantioselective organocatalytic domino/tandem reactions as key steps. It is divided into three parts, dealing successively with syntheses based on organocatalytic asymmetric Michael-initiated domino reactions as key steps; aldol-initiated domino/tandem reactions and other domino reactions.

Waste machines as an alternative way to enhance students’ speaking interest

The phenomenon this time was that many lecturers had fallen asleep with the technological advancements used in the learning media. By relying on a more unique creativity, this study used simple materials from spare parts of a machine that can be used as learning media especially in speaking interest. The paper aims to explore speaking interest through waste machines to the students of Mechanical Engineering, the State Polytechnic of Tanah Laut. It investigates how waste machines can be incorporated in English for Specific Purpose (ESP) learners’ speaking interest. This study was qualitative case study, and data were gathered through observations, field notes and interviews. Data were interpreted based on the prepared achievements indicator. The results of the study reveal that the utilization of waste machines such as shocks, piston, gear, and bold is successful improving speaking skill for the students of Mechanical Engineering. In addition, students also learnt how to deliver in presentation with their field studies.

Distinctive Detection of Fe2+ and Fe3+ by Biosurfactant Capped Silver Nanoparticles via Naked Eye Colorimetric Sensing

Explicit detection of iron as Fe2+ and Fe3+ in the biological and environment systems by simple materials and methods is crucial. In this study, green synthesized silver nanoparticles (AgNps) capable...

The Implementation of traditional games based on nature in RA (Raudatul Athfal) in Bangkalan Madura

This research is located at the Early Childhood Education Unit (Roudlotul Athfal) in Bangkalan Regency by examining traditional games that use natural ingredients. Traditional games are games that use traditional tools and are characteristic of certain regions or have become a distinctive feature in Indonesia. Traditional games use simple tools derived from simple materials and natural materials available in the environment. The purpose of this study was to describe traditional games using natural materials in Bangkalan. Researchers used a qualitative research approach with a type of case study. The data collection methods used by researchers were interviews and observations and the stages of data analysis used an interactive model. The results of this study indicate that the tools used to play traditional games are very dependent on the area where they are played, namely when playing traditional games in coastal areas, the tools used come from the sea such as shells, small corals, tamarind seeds that grow near the beach , and if you play traditional games located near rice fields and plantations, the game tools used use leaves and bamboo trees. Traditional games using natural materials can optimize children's development, such as communication skills, creativity, fine and gross motives.