Atomic Bombing Of Hiroshima Research Articles

Reducing the risks of nuclear war to humanity

Reducing the risks of nuclear war to humanity

Buddhism and Cultural Heritage in the Memorialization of the Hiroshima Bombing: The Art and Activism of Hirayama Ikuo

Debates on the memorialization of the atomic bombing of Hiroshima have played an essential role in the construction of postwar Japanese identity, public memory, and historical consciousness. Religion, often conceived beyond traditional terms through concepts such as “spirituality” and “heritage”, was part of this process. This article examines the role of Buddhism in the autobiographical and visual narratives of the atomic bomb survivor Hirayama Ikuo, who expressed his personal trauma through art, turning it into a call for peace and for the preservation of the cultural heritage of the Silk Road, associated with the spread of Buddhism. Using recent critical approaches to heritage studies, I will show how the heritagization of Buddhism in Hirayama’s work does not preclude the sacralization of aspects of Silk Road heritage. Placing Hirayama’s approach to the nuclear bombing in the context of postwar discourses on Japan as a peaceful “nation of culture”, I will also problematize his view of Buddhism and the Silk Road by showing how similar views were used in support of imperialism in the prewar period.

High Fidelity: Pedagogy and Postatomic Japanese Chronicle

With the 75th anniversary of 1945 barely in our cultural rearview mirror, the generations who experienced World War II firsthand have ceded their stories to the generations that follow. This article focuses on the 1945 bombings of Japan, particularly the atomic bombings of Hiroshima and Nagasaki. Those who experienced the bombings, known generally and collectively as hibakusha, worked to preserve accounts of their experiences in acts of transmission across generations that were intended to prompt particular kinds of praxis. Now the accounts—at least those for public consumption—are collected in a variety of memorial archives and exhibitions, available in translation and via a range of media. This article asks, How can we think about the ‘afterlives’ of these accounts, or how might we understand the body of archived testimony in a way that is available for engagement by subsequent generations at temporal, geographic, and linguistic remove? To address this question, I frame witnesses’ acts of memorial transmission as teaching acts. I argue that their lingering power is a pedagogical power, meant to lead the audience, the students, toward care, attention, and action. I argue that the “lesson” takes the form of Benjaminian chronicle and its activity is one of appeal and response prefigured by Japanese ritual actions of irei, or making amends with the dead. The form and activity of these lessons frame a memorial relationship with testimonial literature that moves beyond moment of production and transmission into an enduring and accessible space of critical pedagogy.

The possible impact of passive smoke exposure on radiation-related risk estimates for lung cancer among women: the life span study of atomic bomb survivors

Purpose Analyses of the Life Span Study cohort of atomic bomb survivors have shown a statistically significant sex difference in the excess risk of incident lung cancer due to radiation exposure, with the radiation-related excess relative risk per gray (ERR/Gy) for women approximately 4 times that for men, after accounting for active smoking. We sought to determine the extent to which this risk difference could be explained by adjustment for passive smoke exposure, which is a known risk factor for lung cancer that was not measured among Life Span Study participants, and which could be particularly influential among female never-smokers. Materials and methods The Life Span Study includes survivors of the atomic bombings of Hiroshima and Nagasaki and city residents who were not in either city at the time of the bombings, matched to survivors on city, sex, and age. First primary lung cancers were identified from population-based cancer registries between 1958 and 2009. Data on active smoking were obtained from mailed surveys and in-person questionnaires (1965–1991). We calculated passive smoke exposure for female never-smokers by attributing smoking pack-years at various intensities (5–50%) based on smoking patterns among men, stratified by city, birth year, radiation dose, and lung cancer status. Poisson regression models with additive and multiplicative interactions between radiation dose and smoking were used to estimate sex-specific radiation-related excess relative risks for lung cancer. Results During the study period, 2,446 first primary lung cancers were identified among 105,444 study participants. On average, male smokers started smoking 19.5 cigarettes per day at 21.5 years old. Partially attributing male smoking patterns to female never-smokers—to approximate passive smoke exposure—yielded lower radiation-related ERR/Gy estimates for women under a multiplicative radiation-smoking interaction model, leading to a lower female-to-male ratio of ERR/Gy estimates; however, this difference was evident only at very high passive smoke intensities. Under an additive radiation-smoking interaction model, the results were unchanged. Conclusions Our results are consistent with the possibility that failure to account for passive smoke might contribute, in small part, to the higher radiation risk estimates for lung cancer among women compared to men in the Life Span Study.

A Tunguska sized airburst destroyed Tall el-Hammam a Middle Bronze Age city in the Jordan Valley near the Dead Sea

We present evidence that in ~ 1650 BCE (~ 3600 years ago), a cosmic airburst destroyed Tall el-Hammam, a Middle-Bronze-Age city in the southern Jordan Valley northeast of the Dead Sea. The proposed airburst was larger than the 1908 explosion over Tunguska, Russia, where a ~ 50-m-wide bolide detonated with ~ 1000× more energy than the Hiroshima atomic bomb. A city-wide ~ 1.5-m-thick carbon-and-ash-rich destruction layer contains peak concentrations of shocked quartz (~ 5–10 GPa); melted pottery and mudbricks; diamond-like carbon; soot; Fe- and Si-rich spherules; CaCO3 spherules from melted plaster; and melted platinum, iridium, nickel, gold, silver, zircon, chromite, and quartz. Heating experiments indicate temperatures exceeded 2000 °C. Amid city-side devastation, the airburst demolished 12+ m of the 4-to-5-story palace complex and the massive 4-m-thick mudbrick rampart, while causing extreme disarticulation and skeletal fragmentation in nearby humans. An airburst-related influx of salt (~ 4 wt.%) produced hypersalinity, inhibited agriculture, and caused a ~ 300–600-year-long abandonment of ~ 120 regional settlements within a > 25-km radius. Tall el-Hammam may be the second oldest city/town destroyed by a cosmic airburst/impact, after Abu Hureyra, Syria, and possibly the earliest site with an oral tradition that was written down (Genesis). Tunguska-scale airbursts can devastate entire cities/regions and thus, pose a severe modern-day hazard.

Faith, Fallout, and the Future: Post-Apocalyptic Science Fiction in the Early Postwar Era

In the early postwar era, from 1945 to 1960, Americans confronted a dilemma that had never been faced before. In the new atomic age, which opened with the atomic bombings of Hiroshima and Nagasaki, Japan, in August 1945, they now had to grapple with maintaining their faith in a peaceful and prosperous future while also controlling their fear of an apocalyptic future resulting from an atomic war. Americans’ subsequent search for reassurance translated into a dramatic increase in church membership and the rise of the evangelical movement. Yet, their fear of an atomic war with the Soviet Union and possible nuclear apocalypse did not abate. This article discusses how six post-apocalyptic science fiction novels dealt with this dilemma and presented their visions of the future; more important, it argues that these novels not only reflect the views of many Americans in the early Cold War era, but also provide relevant insights into the role of religion during these complex and controversial years to reframe the belief that an apocalypse was inevitable.

Creation by Destruction: America and the End of the Pacific War in Light of Economic Reconversion and Post-war Reconstruction

ABSTRACT For several decades, the atomic bombings of Hiroshima and Nagasaki in August 1945 have been the subject of a fierce debate between orthodox and ‘revisionist’ historians. In so doing, however, historians have for the most part neglected to look more closely into questions of a primarily economic and organisational nature in investigating the contributing factors to the American decision-making process. Accordingly, this analysis explores systematically how in addition to the predominant need of avoiding further combat casualties, a speedy conclusion of the Pacific conflict was also deemed critical to a successful re-transition of United States war-time production to a thriving peace-time economy, as well as to a comprehensive rehabilitation of the war-shattered European continent.

U.S. Public Opinion on the Hiroshima and Nagasaki Bombings since 1945

In the 75 years since the atomic bombing of Hiroshima and Nagasaki, opinion surveys have indicated a gradual, substantial decline in public approval of these actions. Most of these polls have still...

Long-term consequences of the atomic bombing in Hiroshima

This paper examines long-term consequences of one of the most serious catastrophes ever inflicted on humankind: the atomic bombing that occurred in Hiroshima in 1945. While many victims died immediately or within a few years of the bombing, there were many negative effects on survivors in terms of both health and social/economic aspects that could last many years. Of these two life factors, health and social/economic aspects, the latter has largely been ignored by researchers. We investigate possible long-lasting effects using a new dataset covering the middle and older generations in Hiroshima some 60 years after the tragedy. Our empirical results show that Atomic Bomb Survivors did not necessarily suffer unfavorable life experiences in terms of the average marriage status or educational attainment but did experience significant disadvantages some aspects including the husband/wife combination of married couples, work status, mental health, and expectations for the future. Thus, survivors have suffered for many years after the catastrophe itself.

Cutaneous Radiation Injuries: Models, Assessment and Treatments.

Many cases of human exposures to high-dose radiation have been documented, including individuals exposed during the detonation of atomic bombs in Hiroshima and Nagasaki, nuclear power plant disasters (e.g., Chernobyl), as well as industrial and medical accidents. For many of these exposures, injuries to the skin have been present and have played a significant role in the progression of the injuries and survivability from the radiation exposure. There are also instances of radiation-induced skin complications in routine clinical radiotherapy and radiation diagnostic imaging procedures. In response to the threat of a radiological or nuclear mass casualty incident, the U.S. Department of Health and Human Services tasked the National Institute of Allergy and Infectious Diseases (NIAID) with identifying and funding early- to mid-stage medical countermeasure (MCM) development to treat radiation-induced injuries, including those to the skin. To appropriately assess the severity of radiation-induced skin injuries and determine efficacy of different approaches to mitigate/treat them, it is necessary to develop animal models that appropriately simulate what is seen in humans who have been exposed. In addition, it is important to understand the techniques that are used in other clinical indications (e.g., thermal burns, diabetic ulcers, etc.) to accurately assess the extent of skin injury and progression of healing. For these reasons, the NIAID partnered with two other U.S. Government funding and regulatory agencies, the Biomedical Advanced Research and Development Authority (BARDA) and the Food and Drug Administration (FDA), to identify state-of-the-art methods in assessment of skin injuries, explore animal models to better understand radiation-induced cutaneous damage and investigate treatment approaches. A two-day workshop was convened in May 2019 highlighting talks from 28 subject matter experts across five scientific sessions. This report provides an overview of information that was presented and the subsequent guided discussions.

Cutaneous Radiation Injuries: Models, Assessment and Treatments.

Many cases of human exposures to high-dose radiation have been documented, including individuals exposed during the detonation of atomic bombs in Hiroshima and Nagasaki, nuclear power plant disasters (e.g., Chernobyl), as well as industrial and medical accidents. For many of these exposures, injuries to the skin have been present and have played a significant role in the progression of the injuries and survivability from the radiation exposure. There are also instances of radiation-induced skin complications in routine clinical radiotherapy and radiation diagnostic imaging procedures. In response to the threat of a radiological or nuclear mass casualty incident, the U.S. Department of Health and Human Services tasked the National Institute of Allergy and Infectious Diseases (NIAID) with identifying and funding early- to mid-stage medical countermeasure (MCM) development to treat radiation-induced injuries, including those to the skin. To appropriately assess the severity of radiation-induced skin injuries and determine efficacy of different approaches to mitigate/treat them, it is necessary to develop animal models that appropriately simulate what is seen in humans who have been exposed. In addition, it is important to understand the techniques that are used in other clinical indications (e.g., thermal burns, diabetic ulcers, etc.) to accurately assess the extent of skin injury and progression of healing. For these reasons, the NIAID partnered with two other U.S. Government funding and regulatory agencies, the Biomedical Advanced Research and Development Authority (BARDA) and the Food and Drug Administration (FDA), to identify state-of-the-art methods in assessment of skin injuries, explore animal models to better understand radiation-induced cutaneous damage and investigate treatment approaches. A two-day workshop was convened in May 2019 highlighting talks from 28 subject matter experts across five scientific sessions. This report provides an overview of information that was presented and the subsequent guided discussions.

Reflecting on Hiroshima/Nagasaki at 75

As the COVID-19 pandemic rages around the world, I sit pondering what we have, and have not, learned in the seventy-five years since the atomic bombings of Hiroshima and Nagasaki. As the media exho...

Waking Up Generation Z

As we move further away from the atomic bombings of Hiroshima and Nagasaki, their impact and legacy becomes a distant memory, losing importance, especially with youth (for this essay, youth is defi...

From Ending the War to Permanent War

Decades after the end of World War II, the world has yet to grasp the full meaning of Hiroshima and Nagasaki. The atomic bombings of Hiroshima and Nagasaki remain surprisingly understudied in the s...

The Nuclear Age Persists after 75 Years

KRIEGER: This year marks the 75th anniversary year of the U.S. atomic bombings of Hiroshima and Nagasaki. The atomic bombs that destroyed those two cities were the only ones in existence at the tim...

Lessons from A-bomb survivors: Researching Hiroshima & Nagasaki survivors’ perspectives for use in U.S. social studies classrooms

As world leaders strengthen their nuclear arsenals, and fears of global nuclear proliferation increase, social studies teachers must be prepared to help learners investigate the devastating consequences on human life and property associated with their use. This manuscript presents an ethnological study of six atomic bomb survivors from Hiroshima and Nagasaki during World War II. Participants completed a qualitative questionnaire describing their experiences during World War II, and making recommendations to U.S. social studies teachers when teaching about the dropping of the atomic bombs in Hiroshima and Nagasaki in Japan. Data was analyzed to identify patterns and themes, and two categories emerged related to our research question. Findings suggest participants support U.S. teachers imparting global perspectives that speak directly to the destructive power of the atomic bomb and its impact on humans and the environment for years to come. This includes a movement away from using the social studies curriculum to point fingers of historic blame in the use of atomic weapons, and towards empowering learners to become agents of change in actualizing a nuclear free and peaceful world. We discuss the implications of this study’s findings in social studies and global education.

Risk Of Cancer And Radiation Dose Received By Patients From Common Diagnostic Radiological Examinations

Background: Although radiological diagnostic studies (RDS) are an important and acceptable part of medical practice, it is not without hazards. It is associated with increased risk of cancer. Unfortunately the typical and safe dose of each radiological examination is not known. Most of our knowledge of cancer risk comes from studies of survivors of those exposed to whole body radiation from atomic bomb in Hiroshima & Nagasaki, jobs associated with radiation exposure, Chernobyl survivors & patients treated with radiation therapy for cancer and other diseases.
 Objectives To estimate radiation dose received by patients from diagnostic radiological examinations and lifetime attributable risk of cancer (LTARC).
 Type of the study: A prospective study.
 Methods A prospective study was conducted in Al-Kindi Teaching Hospital (KTH) during the period from 1st June to 31st august 2016. The study was performed on 910 adult patients. There were 595 males (65.38%) and 315 females (34.62%); mean age was 41.5 years (range 20-63).Different RDS were considered including chest-x ray (CXR), skull x-ray(SXR), x-ray of limbs and pelvis (LPXR) for orthopedic causes , computed tomography scan (CTS) and mammography (MG) .
 Results CXR was performed for 260 (28.57%) patients which delivers 0.12 mSv. SXR was done for 160 (17.58%) patients which delivers 0.3 mSv. LPXR was performed for 220 (24.175%) which delivers 0.3-0.6 mSv. MG exposes 150 (16.48%) to 3 mSv. While CTS ,which delivers 6.2-16 mSv according to anatomic area being scanned, was done for 120(13.19%) patients.
 Conclusion There is great abuse for using RDS from both patients and doctors, without realizing their danger and association with cancer development. It was proved that RDS expos patients to different kinds of tissues injury including cancer.

“This Grim Game”: Kennedy and Arms Control for Outer Space

Shortly after the atomic bombings of Hiroshima and Nagasaki, the U.S. physicist Louis Ridenour penned a short play for Fortune magazine detailing how a future nuclear war might start. “Pilot Lights of the Apocalypse” opens in an underground command center beneath San Francisco, where a small group of high-ranking military officials give the U.S. president a tour of the facility. The commanding general explains that there are over 5,000 bomb-equipped satellites in orbit above the earth, owned by a host of different countries, ready to strike enemy cities in the event of major hostilities. Because such a strike would descend from outer space, however, determining from where an attack originated is impossible. The command staff must therefore rely on “political” data—an ever-shifting list of political agitators—to determine which enemies might have the greatest motivation to initiate a war. No sooner does the president’s tour end when the bunker shakes violently...

Assessing the Relative Biological Effectiveness of Neutrons across Organs of Varying Depth among the Atomic Bomb Survivors.

When assessing radiation-related risk among the atomic bomb survivors, choices in modeling approach can have an important impact on the results, which are then used to inform radiation protection standards throughout the world. The atomic bombings of Hiroshima and Nagasaki produced a mixed-field radiation exposure from two sources: neutrons and gamma rays. Neutrons are more densely ionizing and cause greater biological damage per unit absorbed dose, resulting in greater relative biological effectiveness (RBE) than gamma rays. To account for this, a combined weighted dose is typically calculated as the sum of the gamma-ray dose and 10 times the neutron dose in the Radiation Effects Research Foundation's reports of mortality, solid cancer incidence and other outcomes. In addition, the colon, which is often chosen as the whole-body representative organ in these analyses, is relatively deep in the body and therefore its dose calculation involves heavy body shielding of neutrons and a low neutron/gamma-ray ratio. With added follow-up and recently updated doses, we used a data-driven approach to determine the best-fitting neutron RBE for a range of organs of varying depth. Aggregated person-year tables of solid cancer incidence (1958-2009) from the Life Span Study were created with separate neutron and gamma-ray DS02R1 doses for several organs including breast, brain, thyroid, bone marrow, lung, liver and colon. Typical excess relative risk models estimating the linear effect of radiation dose were fitted using a range of neutron weights (1-250) to calculate combined dose for each organ, and model deviances were compared to assess fit. Furthermore, models using separate terms for gamma-ray and neutron dose were also examined, wherein the ratio of the neutron/gamma-ray linear terms indicated the best estimate of the RBE. The best-fitting RBE value for the traditional weighted colon dose was 80 [95% confidence interval (CI): 20-190], while the RBEs for other organs using weighted doses ranged from 25 to 60, with the best-fitting weights and confidence interval widths both incrementally increasing with greater depth of organ. Models using separate neutron- and gamma-ray-dose terms gave similar results to weighted linear combinations, with a neutron/gamma-ray term ratio of 79.9 (95% CI: 18.8-192.3) for colon. These results indicated that the traditionally modeled RBE of 10 may underestimate the effect of neutrons across the full dose range, although these updated estimates still have fairly wide confidence bounds. Furthermore, the colon is among the deepest of organs and may not be the best choice as a single surrogate organ dose, as it may minimize the role of the neutrons. Future work with more refined organ doses could shed more light on RBE-related information available in the Life Span Study data.

Scales and Perspectives of Resilience: The Atomic Bombing of Hiroshima and Tange’s Peace Memorial

Resilience can mean a range of things, including the ability of a city or a community to recover quickly both physically and socially, through tangible and intangible elements, physical structures, and people. Built environment scholars have picked up on the concept of resilience in recent years, interpreting it in multiple ways and creating a broad range of narratives. These narratives need to be explored critically, considering who wrote them at what time for what audience and with what narrative goals. This article explores how various actors—from architects to film makers, from historians to politicians and planners —have consciously proposed a range narratives of resilience through their depictions of post World War II Hiroshima. It first briefly reflects on the meaning of resilience. It then builds upon earlier examinations of the destruction of Hiroshima and the construction of the Hiroshima Peace Memorial Park and the Peace Memorial Museum by the Japanese architect Tange Kenzō to explore how different actors conceived of resilience, for whom and from which perspective they have built narratives. In the second section, the article explores how Tange and his team managed to bring their project to realization. It suggests that administrators, architects and urbanists, have used rebuilding visions and detailed reports to create resilience narratives aimed respectively at global and local audiences. Overall, the text demonstrates that together, disaster and rebuilding, their representation in the urban environment are all part of larger societal constructions of historical identity.