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This paper presents the shielding effectiveness (SE) of the ground vias in conformal-shielded System-in-Package (SiP) by analyzing three main radiation leak paths separately. The SE of the ground vias can be submerged by radiation from those three paths and the overall SE of SiP is determined by the weakest-shielded path. The method proposed and the findings in the work will assist to decrease the redundant design of ground vias in SiP.

A series of earthquakes that hit Lombok, Nusa Tenggara Barat, in the span of August - September 2018 had caused a massive destruction and major damage especially in the structure of buildings including the radiological unit in the hospitals around the Lombok island. The damage in radiological unit building structures could cause a radiation leak in the surrounding areas and endanger the radiation safety of the hospital personnel. Many efforts were taken from the hospital itself and the government to immediately repair the damages in the structure. This study aimed to reports analysis the damage caused by the earthquake to the building structure and the efforts that were taken to repair the damages one year after the events. The measurements of exposure around the buildings were also performed to assess the results of the building renovation. The results were then compared with the radiation exposure measurements report prior to the events. A series of recommendations was then offered based on the results analysis regarding the enhancement of the shielding.

Robert P Crease describes how news of a radiation leak at a US neutron facility was handled in today’s online, networked and locked-down world

This paper attempts to investigate March was made of yarn which depict Great East Japan Earthquake and the nuclear power plant accident. So I comprehensively analyzed recognition and response of modern Japanese literary writers about the 3.11 Great East Japan Earthquake and the Fukushima nuclear power plant radiation leak As a result of the analysis in this work, the following conclusions were drawn. First, the author of a literary work recognized that it must be informed later by recording their current miserable situation. Second, the modern Japanese literary writers have sought to provide hope and comfort through these works. Third, the modern Japanese literary writers severely criticized for the government`s limit on the Great East Japan Earthquake and modern civilization engendering the nuclear power plant, and the social atmosphere only to appeal to patriotism and national unity.

The paper analyzes the theories of nuclear leakage accident information extraction based on 3S technology, and studying roundly the building process of GIS spatial and temporal databases; the contents of RS images collection and the function of GPS geography position information. In addition, information extraction and analysis methods both on spatial dimension and temporal dimension are summarized. The spatial distribution and trend of radiation leak after the nuclear accident are simulated by trend surface model. Calculation and mapping shows the variation of the radiation value with time using time series analysis model.

On March 11, 2011, a 9 Richter scale earthquake occurred off the northeastern coast of Japan. The earthquake caused a major tsunami, resulting in the radiation leak of Fukushima I nuclear power pla...

The object of this study is to suggest national health material on the basis of awareness of parents and infants on radiation leak in Fukushima in Japan. This research investigated and analysed the 147 questionnaire forms out of 155 who are composed of 97 parents in 'H' kindergarten living in 'G' metropolitan city and 50 infants (5 years old, 27boys and 23 girls). In conclusion, the role of press is very important on the matter of radiation leak damage, and as a result, specific and practical management of curriculum regarding it is essential to provide parents and infants with useful information to improve national wellbeing.

From the perspective of risk, nuclear-power-related facilities (NPRFs) are often regarded as locally undesirable land use. However, construction of NPRFs contributes to social infrastructural improvement and job creation in the host communities. This raises a question: How large are these positive and negative effects? To approach this question from an economic viewpoint, we estimated the hedonic land price function for the Mutsu-Ogawara region of Japan from 1976 to 2004 and analyzed year-by-year fluctuations in land prices around the NPRFs located there. Land prices increased gradually in the neighborhood of the nuclear fuel cycle facilities (NFCFs) in Rokkasho Village, except for some falling (i) from 1982 to 1983 (the first official announcement of the project of construction came in 1983), (ii) from 1987 to 1988 (in 1988, the construction began and opposition movements against the project reached their peak), and (iii) from 1998 to 1999 (the pilot carry-in of spent fuels into the reprocessing plant began in 1998). Land prices around the Higashidori Nuclear Power Plant decreased during the period 1981-1982, when the Tohoku Electric Power Corp. and Tokyo Electric Power Corp. announced their joint construction plan. On the other hand, we obtained some results, even though not significant, indicating that land prices around Ohminato and Sekinehama harbors changed with the arrival and departure of the nuclear ship Mutsu, which suffered a radiation leak in 1974.

There is no doubt that the huge earthquake on 11 March 2011 off the Pacific coast of Tohoku, Japan, and subsequent tsunami is one of the largest natural disasters in modern history. Unexpected radiation leakage from quake-hit and inundated nuclear power reactors has worsened the crisis. Appropriate management of the situation is paramount but the question is, ‘What is to be done and how to do it?’ In this, Japan may be able to learn from the experience of Thailand.

Shut down after a radiation leak in May 2013, Japan9s premier particle accelerator could soon resume full operations if it passes an inspection of new safety features scheduled for 17 April. The Japan Proton Accelerator Research Complex (J-PARC) in Tokai, 110 kilometers northeast of Tokyo, features a 50 giga-electronvolt synchrotron that provides streams of protons for three separate experimental facilities. One focuses on materials and life sciences; another is dedicated to a long-baseline neutrino experiment; the third supports studies of subatomic particles called hadrons. The leak put a halt to all operations. Work on materials and life sciences and neutrinos resumed in spring 2014 after J-PARC bolstered safety procedures. Research in the Hadron Experimental Facility, where the leak occurred, was further delayed by the installation of new vapor barriers and exhaust fan filters and the adoption of other countermeasures to contain radiation. The halt in experiments has delayed groundbreaking research, though some groups were affected more than others.

Japan's massive J-PARC physics facility has been shut down after 34 workers were exposed to increased levels of radiation. Michael Banks reports on the fallout from the incident.

A key facility at the $1.5bn Japan Proton Accelerator Research Complex (J-PARC) in Tsukuba has been reopened almost a year after a radiation leak at the facility put the whole complex out of action.

The challenge now is to learn as much as possible about the medical effects of radiation The BMJ ’s editorial board met in London last month, but one board member, Ryuki Kassai, wasn’t there. As head of the Department of Community and Family Medicine at Fukushima Medical University he was busy elsewhere. You can read his blogs at http://blogs.bmj.com/ and listen to his podcast at http://podcasts.bmj.com/ about facing the unimaginable triple whammy of earthquake, tsunami, and radiation leak. Coastal towns near Fukushima now look like Hiroshima after the bomb, and Dr Kassai begins his first blog by quoting the writer Kenzaburo Oe’s Hiroshima Notes , about falling again into the darkness after having once known the light. What surprised me was Dr Kassai’s claim that high quality, standardised, evidence based information on how to respond was lacking. “We experienced the disasters in Hiroshima and Nagasaki, but despite this there are many misunderstandings regarding radiation,” he wrote. “We need information on immediate, short, and long term effects of radiation, and interventions and strategies to alleviate the effects.” But surely after the atomic bombs in Japan and the radiation leak in Chernobyl there was nothing much left to learn. And then I remembered a session I attended at the annual congress of the International Physicians for …

On 11 March 2011, the Tohoku-Kanto earthquake struck rural Japan. The magnitude of the earthquake was 9.0, which made it the largest earthquake in recorded history in Japan, and the fourth-largest earthquake in the world since 1900. Subsequent tsunamis devastated the Pacific coast of the Tohoku region. Six days after the disaster, the number of confirmed deaths has already exceeded 5000 and is expected to exceed 10 000. Approximately 9000 people are missing and 400 000 people are being housed in evacuation shelters 1 . Hydrogen explosions at nuclear power reactors following the disaster are dispersing radiation.

washington A widely-used research reactor at the Brookhaven National Laboratory in NewYork state, forced to close down in January after a radiation leak, is unlikely to reopen untilOctober 1999 at the earliest.

At 06:30 PST on March 31, 1984, the AGRINI device was detonated at the Nevada Test Site at a depth of 320 m in drillhole U2ev. All of the containment measurements indicated normal explosion phenomenology, with somewhat weaker ground motion than expected. About 1 h, 44 min after detonation, the ground surface was breached by an unusual collapse crater with an attendant slight radiation leak. Within a few hours, the radiation level decreased to background, and workers were allowed access to the area. AGRINI was the first event to use gypsum-filled aggregate for the stemming platforms and the deep stemming gas-seal plug. In addition, an experimental gypsum-filled aggregate plug was placed in the upper part of the surface casing for evaluation as a replacement for the two-part epoxy aggregate gas-seal plug at the bottom of the surface conductor. Containment-related diagnostics were fielded on the AGRINI event to monitor the emplacement of these gypsum plugs and to determine the quality of their performance. The results indicate that the plugs were emplaced according to plan and performed as designed and that the emplacement hole stemming features did not contribute in any way to the post-collapse release of radioactivity. 18 figs.