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We describe gravitational waves. We start with radiation in the TT gauge, then the gravitational field of a mass distribution: after using the electromagnetic multipole expansion as an analogy, we describe the gravitational multipole expansion. We calculate gravitational radiation emitted from a source, then describe the pseudotensor of the gravitational field for the quadratic approximation, and use it to calculate the power radiated from through gravitational waves (the Einstein formula). Finally, we describe the exact, non-perturbative solution for gravitational waves with cylindrical symmetry found by Einstein and Rosen.
To describe the protocol and progress of a thyroid study using thyroid ultrasonography in emergency workers who responded to the Fukushima nuclear accident.
Methods
Thyroid ultrasonography was performed on Fukushima emergency workers at over 60 health examination institutions. The accuracy of ultrasonography is controlled by standard procedural protocols, examiner training, and a central review system. Thyroid findings are classified into 4 categories: Category A1 (no nodule or cyst), Category A2 (nodules ≤ 5.0 mm and/or cysts ≤ 20.0 mm), Category B (nodules ≥ 5.1 mm and/or cysts ≥ 20.1 mm), and Category C (requires immediate further examination). Participants classified as Categories B or C are recommended for secondary examination.
Results
Among 3398 participants with available ultrasound images obtained at the first health examination between January 2016 and October 2023, 45.2 % were classified as Category A1, 39.2 % as Category A2, 15.5 % as Category B, and 0 % as Category C. Of the 207 participants for whom secondary examination results were available, seven were diagnosed with cancer or suspected cancer.
Conclusions
An accuracy control system of thyroid ultrasonography has been established which will continue to carefully investigate the thyroids of Fukushima emergency workers.
In this introduction to an excerpt from Durian Sukegawa's travel memoir A Dosimeter on the Narrow Road to Oku, I give an outline of Sukegawa's biography, his reasons for undertaking a journey by bicycle in 2012 along Matsuo Basho's route in The Narrow Road to Oku, and the reasons for my own particular interest in this text. The translation covers the section of his journey from Fukagawa to Nasu. It won the 2021 Kyoko Selden Memorial Translation Prize in Japanese Literature, Thought, and Society.
A decade ago, Japan learned some bitter lessons from the 2011 Fukushima nuclear disaster, after ignoring global and local ones over the preceding four decades. But elements of the country clearly haven’t, whether it comes to the atom or dealing with an international event like the Tokyo Summer Olympics during a global pandemic. Because of Japan’s mishandling of the pandemic and new variants resistant to vaccines, whether the games, which a majority of the public wanted cancelled or postponed again, would have become a super-spreader event, trigger a new variant or create an explosion of COVID-19 cases or a combination thereof remained a continuing concern. What’s clear is that Tokyo put political, bureaucratic and commercial interests ahead of the health and wellbeing of the overall public —similar to what happened in the decades preceding Fukushima.
Safecast is a network of concerned citizens created after 3.11 to measure nuclear radiation and provide these measurements in real time on the Internet. This is one among many instances of the production of information on radiation risks after 3.11. While Safecast has contributed to the collective intelligence on these risks, its members have claimed that such measurements and data are “politically neutral”.
This Diary written by twentieth-generation sake brewer of Futaba, Tomisawa Shūhei, from March 11, 2011 until April 21, 2011, depicts the experience of his family as they navigated the forced evacuation of their ancestral home as a result of the disastrous nuclear meltdown at the Fukushima Daiichi nuclear power plant. The Diary is translated to reflect the original and only occasionally adds names or descriptions for clarity.
The recently released eight-part Japanese docudrama THE DAYS (Netflix 2023) ostensibly concerns the March 2011 earthquake, tsunami, nuclear reactor explosions and subsequent meltdowns at Fukushima. We highlight the problematic rendering of this particular Fukushima screen history by analysing THE DAYS' narrative veracity and reliance on ‘heroic’ disaster tropes, absent-presences, the glossing over of the radiological legacy, and the context of related nuclear accident teledramas and docudrama re-enactments.
March 11, 2021 marked the tenth anniversary of Japan’s triple disaster of 2011. Residents of Fukushima towns which endured the greatest environmental, social, and economic impact of the Fukushima Daiichi NPP accident have lived with uncertainty about the future for a full decade. Major infrastructure projects are fully or nearly complete, and decontamination efforts in reopened towns have largely concluded. Nevertheless, evacuee return rates have been low in most towns which had been placed under full evacuation orders. As a result, the current populations of many affected towns are less than 20% of their pre-disaster levels, and the majority of current residents over 65 years of age. Despite the huge challenges, the energy and know-how of the people of Fukushima are tremendous resources. Many see the possibility of new forms of long-term viability that capitalize on technology, the age of the population, and the ready availability of land and other resources. What has been achieved so far in realizing these visions has been made possible by an emergent network of informal community leaders, who display a charismatic, soft leadership style.
The book presents personal accounts by veterans of an Army nuclear weapons storage base in Henoko Village, Okinawa during the 1960's in the context of nuclear weapons history, Cold War tensions, and the proposal to use them in Vietnam. They describe their entrances into the Army, training, leave times, re-entry into civilian life, and illnesses associated with radiation exposure three of them later suffered, one of whom died in 2015.
The first tsunami that hit northern Japan in March 2011 was a big wave of salt water. The second tsunami was comprised of cement dikes designed to protect against a tsunami. The third tsunami is a socio-political process that erases memory of the disaster. The nuclear disaster that followed the first tsunami has reactivated the dispute over the effects of low-dose radiation. This controversy, which dates back to the experience of the hibakusha in 1945, includes a problem of hermeneutics—a conflict of interpretation—over what is being counted as “data”.
Amid the radioactive fallout of the meltdowns at Fukushima Daiichi Nuclear Power Station and across what would come to be known as the Exclusion Zone, Japanese members of the nuclear lobby laboured to contain the political fallout of the Fukushima disaster. This article scrutinizes the profuse rhetoric over recycling as mobilized by nuclear boosters and the wider operations of circularity in waste management in Japan. Japanese leant heavily on the notion of recycling to attempt to frame the clean-up in Fukushima in more ideologically convenient terms. This led, for example, to officials trumpeting plans to ‘recycle’ over 16 million cubic metres of radioactive topsoil scraped from hundreds of square kilometres of Fukushima Prefecture, as well as efforts to achieve ‘thermal recycling’ by generating electricity from the incineration of collected irradiated vegetal matter and the large amounts of protective clothing and other material used in the ‘decontamination’ campaign. By scrutinizing this appropriation of recycling rhetoric and its leveraging across Japan's nuclear waste management apparatus, the article exposes contradictions and distortions in contemporary Japanese policy that have considerable socio-political ramifications.
Edited by
Dharti Patel, Mount Sinai West and Morningside Hospitals, New York,Sang J. Kim, Hospital for Special Surgery, New York,Himani V. Bhatt, Mount Sinai West and Morningside Hospitals, New York,Alopi M. Patel, Rutgers Robert Wood Johnson Medical School, New Jersey
Administration of anesthesia is related to numerous associated complications including cardiovascular, respiratory, medication-related, machine-related, position-related, or block-related complications. This chapter discusses the etiology, prevention, and management of numerous complications in the perioperative period.
Radiation exposure and the effect of anti-scatter grids are not well studied in premature infants during transcatheter patent ductus arteriosus closure.
This study aimed to investigate whether the use of anti-scatter grids altered the level of radiation exposure to premature infants undergoing transcatheter patent ductus arteriosus closure.
Methods and Results:
Demographic and radiation exposure data for premature infants who underwent transcatheter patent ductus arteriosus closure at the Stead Family Children’s Hospital from 10/2019 to 10/2021 were retrospectively reviewed and analyzed. Twenty-four patients (41%) underwent transcatheter patent ductus arteriosus closure with anti-scatter grids, while 34 (59%) underwent the procedure without using anti-scatter grids. At the time of catheterization, the median age, corrected age, and weight were 4.3 weeks (3.4–6), 29 weeks (28.1–30.9), and 1200g (1000-1600), respectively. Total radiation exposures for the dose area product and air kerma were 2.73 µGy.m2 (1.65–4.16), and 1.63 mGy (1.15–2.58), respectively. Radiation doses were higher in the group in whom the anti-scatter grids were utilized with dose area product of 3.33 µGy.m2 (2.39–5.43) and air kerma of 2.27 mGy (1.41–3.06) versus 1.86 µGy.m2 (1.46–3.60) and air kerma of 1.40 mGy (1.08–1.92). When radiation doses were adjusted to the radiation time, no difference in radiation exposure was noticed between the groups.
Conclusions:
Transcatheter patent ductus arteriosus closure in premature infants can be safely performed with minimal radiation exposure. In the authors’ laboratory, the use of anti-scatter grids does not impact radiation exposure in premature infants.
Radiotherapy (RT) plays a key role in the tumour microenvironment (TME), impacting the immune response via cellular and humoral immunity. RT can induce local immunity to modify the TME. It can stimulate dendritic cell maturation and T-cell infiltration. Moreover, B cells, macrophages and other immune cells may also be affected. Tertiary lymphoid structure (TLS) is a unique structure within the TME and a class of aggregates containing T cells, B cells and other immune cells. The maturation of TLS is determined by the presence of mature dendritic cells, the density of TLS is determined by the number of immune cells. TLS maturation and density both affect the antitumour immune response in the TME. This review summarized the recent research on the impact and the role of RT on TLS, including the changes of TLS components and formation conditions and the mechanism of how RT affects TLS and transforms the TME. RT may promote TLS maturation and density to modify the TME regarding enhanced antitumour immunity.
Edited by
Laurie J. Mckenzie, University of Texas MD Anderson Cancer Center, Houston,Denise R. Nebgen, University of Texas MD Anderson Cancer Center, Houston
The incidence of cancer during gestation has risen due to multiple factors such as advanced maternal age and improvement in cancer treatment, which has resulted in longer life span and a rising number of survivors who will then become pregnant. Whether a woman is diagnosed with cancer during pregnancy or becomes pregnant after surviving the disease, navigating treatment for both the mother and the fetus can seem daunting for patients as well as their care providers, as there is a higher risk of morbidity for these patients. This chapter aims to describe safe diagnostic and therapeutic options during pregnancy and includes special considerations regarding survivors’ treatment. Breast cancer, lymphoma, leukemia and cervical cancer are the focus of the chapter and obstetric management of patients with these malignancies is addressed, including antenatal care, delivery considerations and breastfeeding.
Edited by
Laurie J. Mckenzie, University of Texas MD Anderson Cancer Center, Houston,Denise R. Nebgen, University of Texas MD Anderson Cancer Center, Houston
Improvements in multimodality treatment of anal and colorectal cancer has led to increased numbers of women survivors who experience gynecologic problems in long-term survivorship. The etiology of gynecologic problems after anal and colorectal cancer treatment is complex and multifactorial. Pelvic radiation, surgery and chemotherapy can all cause anatomic, hormonal and psychological changes. Consideration of preventative measures can ideally reduce the risk of vaginal stenosis, dyspareunia, sexual dysfunction, infertility, premature menopause and pelvic pain after therapy. Proactive screening and appropriate treatment of cancer therapy late effects can improve patients’ quality of life during survivorship.
Edited by
Laurie J. Mckenzie, University of Texas MD Anderson Cancer Center, Houston,Denise R. Nebgen, University of Texas MD Anderson Cancer Center, Houston
Premature ovarian insufficiency (POI) is a heterogeneous diagnosis caused by a multitude of factors including genetic, autoimmune, iatrogenic, social, and environmental. It is defined as loss of ovarian function prior to 40 years of age with subsequent secondary amenorrhea for at least 4−6 months in conjunction with elevated follicle stimulating hormone levels on two different measurements. Prompt recognition of symptoms should encourage thorough history-taking and work-up, as some causes of POI are associated with conditions requiring additional screening or medical management. Early initiation of hormone replacement therapy is necessary to prevent long-term sequelae from chronic hypoestrogenism such as cardiovascular events, poor bone health, and cognitive dysfunction. Extensive counseling with regards to future fertility and family building options is necessary as the diagnosis of POI can be psychologically devastating to many women.
Presents snowmelt, discussing energy flux, physical propertirs of snow, metamorphism of snowpack, rate of snowmelt, energy exchange mechanisms, turbulent convection, snowmwlt runoff generation, and snow-covered areas.
The war in Ukraine raises concerns for potential hazards of radiological and nuclear incidents. Children are particularly vulnerable in these incidents and may need pharmaceutical countermeasures, including antidotes and cytokines. Searches found no published study comparing pediatric indications and dosing among standard references detailing pediatric medications for these incidents. This study addresses this gap by collecting, tabulating, and disseminating this information to healthcare professionals caring for children. Expert consensus chose the following references to compare their pediatric indications and dosing of medical countermeasures for radiation exposure and internal contamination with radioactive materials: Advanced Hazmat Life Support (AHLS) for Radiological Incidents and Terrorism, DailyMed, Internal Contamination Clinical Reference, Medical Aspects of Radiation Incidents, and Medical Management of Radiological Casualties, as well as Micromedex, POISINDEX, and Radiation Emergency Medical Management (REMM). This is the first study comparing pediatric indications and dosing for medical countermeasures among commonly used references for radiological and nuclear incidents.