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Quality of Water

Quality of Water

In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...

Issues And Trends In Healthcare Delivery System

Issues And Trends In Healthcare Delivery System

The issues and trends in healthcare delivery are constantly changing. The COVID-19 pandemic is one recent issue that wreaked havoc on healthcare systems, causing a shortage of healthcare workers, high demand for medicines and supplies, and increased medical expenditure due to a lack of insurance. Other issues include rising healthcare costs and care fragmentation.
Cost Containment
Payment for healthcare services has historically promoted adoption of costly and often unnecessary or inefficient...

Water and Mineral Acquisition

Water and Mineral Acquisition

Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.

Design Example: Creating a Hydraulic Model of a Dam Spillway

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Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.

Testing Water Quality

Testing Water Quality

When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...

Selected Data About Geographic Locations

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Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...

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Related Experiment Video

Updated: Aug 19, 2025

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams

Published on: March 25, 2019

G-DaM: A Distributed Data Storage with Blockchain Framework for Management of Groundwater Quality Data.

Sukrutha L T Vangipuram¹, Saraju P Mohanty², Elias Kougianos²

¹Department of Computer Science and Engineering, University of North Texas, Denton, TX 76203, USA.

Sensors (Basel, Switzerland)

|November 26, 2022

Summary

This study introduces a secure method for collecting groundwater data using Distributed Data Storage (DDS) and Blockchain (BC) technologies. This approach enhances data integrity and quality, crucial for addressing global freshwater scarcity.

Keywords:

Blockchain (BC)Distributed Data Storage (DDS)Internet of Agricultural Things (IoAT)edge system groundwater quality data management smart agriculture

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Last Updated: Aug 19, 2025

BtM, a Low-cost Open-source Datalogger to Estimate the Water Content of Nonvascular Cryptogams

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Published on: March 25, 2019

Continuous Hydrologic and Water Quality Monitoring of Vernal Ponds

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Published on: November 13, 2017

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

Area of Science:

Environmental Science
Computer Science
Data Security

Background:

Groundwater overuse is a significant driver of global freshwater scarcity.
Accurate forecasting of groundwater availability is essential for resource management.
Secure and reliable data collection is a major challenge in groundwater studies.

Purpose of the Study:

To develop an innovative approach for secure groundwater data transmission and storage.
To combine Distributed Data Storage (DDS) and Blockchain (BC) technologies for enhanced data management.
To address limitations of traditional centralized data storage and sharing methods.

Main Methods:

Raw data from the Internet of Things (IoT) is transmitted to DDS and BC edges.
A distributed and decentralized architecture is employed for data storage.
Double hashing and smart contracts are utilized for data integrity and access control.

Main Results:

The proposed system ensures secure data transmission, preventing hacking and tampering.
Implementation of DDS and BC technologies demonstrated improved data quality and integrity.
The decentralized architecture overcomes challenges associated with centralized storage.

Conclusions:

Combining DDS and BC offers a modern, secure solution for groundwater data management.
This approach enhances the reliability of groundwater availability forecasting.
The study highlights the potential of integrating distributed storage and blockchain for environmental data security.