Non-ionizing Radiation Protection :Summary of Research and Policy Options

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Chapter

Acknowledgments

Introduction

Chapter 1 Overview: The Electromagnetic Spectrum and Nonionizing Radiation

1.1 What Is Nonionizing Radiation (NIR)?

1.2 Types of NIR

1.3 How Dangerous is NIR?

1.4 Overview Summary of NIR Health Effects Evaluation: Status

Tutorial Problems

References

Part I Hazard Identification and Assessment: What are the Dangers and How are the Sources Dangerous?

Chapter 2 Hazard Identification: Laboratory Investigation

2.1 Introduction

2.2 The Scientific Method

2.3 Human Volunteer Experiments

2.4 Whole Organism Experiments

2.5 Studies on Isolated Cells, Organs, or Subcellular Organelles

2.6 Sources of Artifact and Importance of Independent Replication and Quality Control

2.7 Difference Between “Effects” and “Harmful Effects”: Extrapolation to Human Health Outcomes

2.8 Role of Mathematical Modeling and Mechanism Studies

Appendix: Statistical Concepts

A.1 Averaging

A.2 Standard Error of the Mean

A.3 When Is a Difference Significant?

A.4 Correlations

A.5 Analysis of Variance

A.6 Statistical Power

A.7 Multiple Comparisons

Tutorial Problems

References

Chapter 3 Hazard Identification: Epidemiological Studies and Their Interpretation

3.1 Introduction

3.2 Causation

3.3 Incidence and Prevalence

3.4 Evidence for Causation

3.5 Types of Epidemiological Study

3.6 Time Dimensions – Prospective, Retrospective, or Cross Sectional

3.7 Some Other Epidemiological Studies

3.8 The Results of Epidemiological Studies: Relative Risk, Confidence Limits, and P-Values

3.9 Assessing Causality: Identifying Noncausal Explanations

3.10 Conclusion

Tutorial Problems

References

Part II Ultraviolet (UV) Light

Chapter 4 UVR and Short-Term Hazards to the Skin and Eyes

4.1 Introduction

4.2 Sources of UVR: Natural and Artificial

4.3 Short-Term Hazards to Skin and Eyes

4.4 UVR Interaction with Biomolecules

4.5 Eye Transmission and Effects

References

Chapter 5 Ultraviolet: Long-Term Risks and Benefits

5.1 Hazards: General

5.2 Benefits: Vitamin D Synthesis

5.3 Reduction in Sun Exposure

5.4 Control of Artificial Tanning

Tutorial Problems

References

Chapter 6 UV Guidelines and Protection Policies

6.1 ICNIRP Guidelines and National Standards

6.2 General Population versus Occupational Exposures

6.3 Occupational Exposures to UVR

6.4 Measured Occupational Exposures to UVR

6.5 Awareness Campaigns

6.6 Protection Measures

References

Chapter 7 UV Measurements

7.1 Radiometry and Spectroradiometry

7.2 Solar UVR

7.3 Solar UVR Broadband Measurements

7.4 Solar UVR Spectral Measurements

7.5 Personal Dosimetry

7.6 Chemical Dosimeters

7.7 Biological Dosimeters

References

Further Reading

Part III Visible and Infrared (IR) Light

Chapter 8 Laser and Visible Radiation Hazards to the Eye and Skin

8.1 Intense Sources of Optical Radiation

8.2 Basic Principles of a Laser

8.3 Intense Nonlaser Sources of Visible Light

8.4 Biological Effects

8.5 Laser Radiation Safety

Tutorial Problems

References

Chapter 9 Infrared Radiation and Biological Hazards

9.1 Introduction

9.2 Black Body Radiation

9.3 Absorption of Infrared Radiation

9.4 Interaction of Infrared Radiation with the Human Body

9.5 Traditional Sources of Infrared Radiation

9.6 Personal Protective Equipment

9.7 Recent and Emerging Infrared Technologies, Including Lasers, Laser Diodes, LEDs, and Terahertz Devices

9.8 Infrared Exposure Standards and Guidelines

References

Chapter 10 Laser and Optical Radiation Guidelines

10.1 Introduction

10.2 Guidelines and Standards for Lasers

10.3 Laser Standards

10.4 Laser Guidelines

References

Chapter 11 Laser Measurements

11.1 Introduction

11.2 Measurement Parameters for Lasers

11.3 Measurement Methods

11.4 Beam Diameter and Beam Divergence

11.5 Divergence Measurements

Tutorial Problems

References

Further Reading

Part IV Radiofrequency (RF) and Microwave Radiation

Chapter 12 Thermal Effects of Microwave and Radiofrequency Radiation

12.1 Introduction

12.2 Thermal Effects Relevant to Health and Safety

12.3 Mechanisms for Thermal Effects of RF Energy

12.4 Modeling Thermal Response of Humans to RF Energy Exposure

12.5 Conclusion

References

Chapter 13 RF Guidelines and Standards

13.1 Introduction

13.2 How Do the Standards-Setting Bodies Operate?

13.3 Standard or Guidance Levels

13.4 Basic Restrictions

13.5 Temporal Averaging

13.6 Contact Current Restrictions

13.7 Reference Levels as a Function of Frequency

13.8 Near-Field versus Far-Field

13.9 Dealing with Multiple Frequencies

13.10 Spatial Averaging

13.11 Specific Issues Regarding Risk Management

13.12 Scientific Input

13.13 The Place of Epidemiological and Low-Level Effects Research in Standard Setting

Tutorial Problems

References

Chapter 14 Assessing RF Exposure: Fields, Currents, and SAR

14.1 Introduction

14.2 RF Sources and the Environment

14.3 Planning an Exposure Assessment

14.4 Quantities and Units

14.5 Broadband Field Strength Measurements

14.6 Frequency-Selective Field Strength Measurements

14.7 Induced and Contact Current Measurements

14.8 SAR Measurements

14.9 Computation of Fields, Currents, and SARs

14.10 Calibration of Instruments

14.11 Validation of Computational Tools and Simulations

14.12 Uncertainty in Measurements and Computations

14.13 Compliance with Limits

Tutorial Problems

Glossary

Symbols

References

Chapter 15 Epidemiological Studies of Low-Intensity Radiofrequency Fields and Diseases in Humans

15.1 Introduction

15.2 Mobile Phone Use and Brain Cancer

15.3 Case–Control Studies

15.4 Cohort Studies

15.5 Time Trends in Brain Tumors

15.6 The IARC Report

15.7 Mobile Phone Base Stations

15.8 Radio and Other Transmitters

15.9 Occupational Studies

15.10 Other Diseases

15.11 Conclusions

Tutorial Problems

References

Chapter 16 Possible Low-Level Radiofrequency Effects

16.1 Introduction

16.2 Where Is the Information?

16.3 Thermal and Nonthermal Effects: Formal Definitions

16.4 RF Bioeffects Research: General

16.5 Summary of In Vitro Work

16.6 Summary of In Vivo Work

16.7 In Vivo Studies: Other Effects

16.8 Animal Whole of Life Studies

16.9 Human Volunteer Studies

16.10 Other Issues Relating to Mechanism of Interaction of RF with Biological Systems

16.11 Modeling and Dosimetry

16.12 Unanswered Questions

16.13 What More Needs to Be Done?

References

Part V Extremely Low-Frequency (ELF) Electric and Magnetic Fields

Chapter 17 Electric and Magnetic Fields and Induced Current Hazard

17.1 Introduction

17.2 What Other Hazards Need We Consider?

17.3 The Initiation of an Action Potential

17.4 Endogenous and Exogenous Currents

17.5 Sensation Thresholds

17.6 Effects of Contact Currents

17.7 Inducing a Current in Tissue by an External Magnetic Field

17.8 Effects of External Electric Fields

17.9 Sources of EMFs: Electricity Transmission and Distribution Systems

17.10 Home Appliances and Industrial or Commercial Sources of EMF

17.11 Transportation Systems

17.12 Therapeutic Uses

17.13 Effect on Pacemakers and Other Implantable or Body-worn Electronic Medical Devices

17.14 Electro and Magnetobiology

17.15 Glossary and Further Definitions

Tutorial Problems

References

Chapter 18 Extremely Low-Frequency (ELF) Guidelines

18.1 Introduction

18.2 Standard or Guidance Levels?

18.3 Guidelines/Standards: History

18.4 Basic Restrictions and Reference (or Maximum Permitted Exposure) Levels

18.5 Basic Restrictions

18.6 MPEs/RLs for Electric (E) Fields

18.7 MPEs/RLs for Magnetic (B) Fields

18.8 Extremities

18.9 Contact Currents

18.10 Time and Space Averaging

18.11 Multiple Frequencies

18.12 The Place of Epidemiological Results in ELF Standard-Setting

18.13 ICNIRP Versus IEEE

Tutorial Problems

References

Chapter 19 Instrumentation and Measurement of ELF Electric and Magnetic Fields

19.1 Introduction

19.2 ELF Instrumentation – General

19.3 Electric Field Instrumentation

19.4 Magnetic Field Instrumentation

19.5 Measurement and Exposure Assessment Considerations

References

Chapter 20 Epidemiological Studies of Low-Intensity ELF Fields and Diseases in Humans

20.1 Leukemia in Children

20.2 Other Cancers

20.3 Occupational Studies

20.4 Neurological Diseases

20.5 Reproductive Outcomes

20.6 Major Reviews

Sources for Updates

Tutorial Problems

References

Chapter 21 Possible Low-Level Extremely Low-Frequency (ELF) Electric and Magnetic Field Effects?

21.1 Exposure to ELF Fields

21.2 Some “Landmark Studies”?

21.3 Mechanism Studies

21.4 Why Is Evidence Regarded as “Inconclusive”?

21.5 Dealing with Scientific Uncertainty in a Prudent Manner

Tutorial Problems

References

Part VI Static Electric and Magnetic Fields

Chapter 22 Static Electric and Magnetic Field Hazards

22.1 Sources

22.2 Interaction Mechanisms

22.3 Health Effects

22.4 Low-Level Effects

22.5 Interference with Implanted Medical Devices

Tutorial Problems

References

Chapter 23 Static Electric and Magnetic Field Guidelines

23.1 Introduction

23.2 Static Electric Fields

23.3 Static Magnetic Fields

23.4 Magnetic Resonance Imaging Guidelines

23.5 Summary

Tutorial Problems

References

Part VII Dealing with Hazard Perception

Chapter 24 Perceived Hypersensitivity: Anecdotal Versus Objective Evidence

24.1 Introduction

24.2 Anecdotal Evidence of Sensitivity to Electromagnetic Fields

24.3 Objective Evidence of Sensitivity to Electromagnetic Fields

24.4 Treatment and Intervention Strategies

24.5 Important Considerations for Treatment

References

Chapter 25 Prudent Avoidance*

25.1 Introduction

25.2 Public Policy Considerations

25.3 Prudent Avoidance Principles

25.4 Prudent Avoidance – Transmission

25.5. Prudent Avoidance – Distribution

25.6 Miscellaneous

25.7 Conclusions

References

Chapter 26 Radiofrequency Fields and the Precautionary Principle

26.1 Introduction

26.2 What Is the Precautionary Principle?

26.3 Precautionary Approaches to Regulating Human Exposure to Radiofrequency Fields

26.4 Difficulties with Precautionary Approaches to Radiofrequency Field Regulation

Acknowledgment

References

Chapter 27 How to Handle Precaution

27.1 Introduction

27.2 A Precautionary Approach to EMF

27.3 Test Case: Extremely Low Frequency Magnetic Fields

27.4 Conclusion

Tutorial Problems

References

Part VIII NIR Injury Prevention and Medical Assessment

Chapter 28 Medical Aspects of Overexposures to Nonionizing Radiation

28.1 General Principles of Managing Overexposures

28.2 Considerations of Components of the NIR Spectrum

References

Chapter 29 Preventive Surveillance Programs

29.1 Introduction

29.2 UV Protection – Influencing Sun Protection Behaviors across the Populations (Sue Heward)

29.3 Preventative Surveillance Programs – Laser Safety (David Urban)

29.4 RF Training Programs (Ray McKenzie)

29.5 Conclusion

Tutorial Problem

References

Part IX Legal and Community Issues

Chapter 30 Public Consultation and Dissemination of Information. Risk Perception. Public Involvement in Decision-Making Regarding Placement of Broadcast Antennas and Power Transmission Lines

30.1 Introduction

30.2 Why Communicate on NIR?

30.3 Public Perception

30.4 Stakeholder Dialog

30.5 When to Communicate

30.6 What to Communicate

30.7 How to Communicate

30.8 Evaluation Is Essential

30.9 Conclusion

References

Chapter 31 Mitigating Nonionizing Radiation Risks

31.1 Introduction

31.2 Mitigation Strategies – Lasers and Other Optical Sources (David Urban)

31.3 Strategies for Radiofrequency Field Exposure Reduction (Michael Bangay)

31.4 Mitigation Strategies for ELF Electric and Magnetic Fields (Thanh Dovan)

31.5 Conclusion

Tutorial Problem

References

Chapter 32 Some of the Controversies Regarding NIR

32.1 Why Should NIR Attract Such Controversy?

32.2 Extremely Low Frequency

32.3 Radiofrequency

32.4 Laser

32.5 Ultraviolet

32.6 What We Can Learn from These Controversies

References

Chapter 33 Summary and Prospects

33.1 Comparison of Nonionizing Radiation with Ionizing Radiation

33.2 Could the Same Protection Framework Be Applied to Both Ionizing and Nonionizing Radiation?

33.3 Might We Expect a Definitive Answer Soon?

33.4 Comparative Costs and Benefits of Mitigation Measures

33.5 Concept of Acceptable Risk

33.6 Can We Live in a World without NIR Exposure?

References

Appendix A Answers to Tutorial Problems

Appendix B List of Suppliers of Survey Equipment

Appendix C Websites for Further Information

Index

EULA

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