Brooming

Brooming is a surface-texturing technique in which a broom is drawn across freshly placed concrete to create a series of shallow, uniform grooves. As the concrete begins to set, the broom disrupts the smooth surface and forms directional ridges that increase texture and improve tire or foot traction, particularly under wet conditions. Engineers use brooming on sidewalks, ramps, driveways, bridge decks, and road pavements to produce a practical, slip-resistant finish without specialized equipment. The timing, pressure, and direction of the brooming pass influence groove depth, surface uniformity, appearance, and long-term performance.

Brooming - Related Videos

Research

JoVE Journal - Chemistry
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Early Detection of Cyanobacterial Blooms and Associated Cyanotoxins using Fast Detection Strategy

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Cited by 7 •

2021

A fast-multidisciplinarystrategy for early detection of cyanobacterial blooms and associated cyanotoxins is described here. It allows for the detection of cyanobacteria and related cyanotoxins in water samples and in organic matrices, such as bivalve samples, in 24 h.

Research

JoVE Journal - Environment
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A Standardized Procedure for Monitoring Harmful Algal Blooms in Chile by Metabarcoding Analysis

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Cited by 12 •

2021

This protocol introduces steps of metabarcoding analysis, targeting 16S rRNA and 18S rRNA genes, for monitoring harmful algal blooms and their associated microbiome in seawater samples. It is a powerful molecular-based tool but requires several procedures, which are visually explained here step-by-step.

Research

JoVE Journal - Environment
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Methods for Performing Crosses in Setaria viridis, a New Model System for the Grasses

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Cited by 31 •

2013

We have developed a methodology for performing crosses in Setaria viridis (S. viridis). The method involves pruning the panicle prior to a hot water treatment to kill viable pollen. Crosses are performed following a well-controlled growth regime and typically result in the recovery of 1 to 7 cross-pollinated seed/s per panicle.

Education

JoVE Lab Manual - Biology

Population Growth - Concepts

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2019

Population Models An ecological population is a group of individuals of a single species living in an area at the same time. To persist, a population must either grow or maintain its size. Population ecology is the study of how population size and age distribution change over time through interactions with other species and the environment as well as with individuals of their own species. A particularly important feature that is studied by ecologists is the rate at which a population grows or...

The Phosphorus Cycle

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2019

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems. Biological Phosphorus Cycle Phosphorus is present in many...

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