Ambient office  = 122 nanosieverts per hour

Ambient outside = 72 nanosieverts per hour

Soil exposed to rain water = 70 nanosieverts per hour

Carrot from Central Market = 92 nanosieverts per hour

Tap water = 79 nanosieverts per hour

Filter water = 59 nanosieverts per hour

Ambient office  = 151 nanosieverts per hour

Ambient outside = 91 nanosieverts per hour

Soil exposed to rain water = 91 nanosieverts per hour

Bartlett pear from Central Market = 113 nanosieverts per hour

Tap water = 81 nanosieverts per hour

Filter water = 75 nanosieverts per hour

Dover sole – Caught in USA = 103 nanosieverts per hour

       Petr Cígler from the Czech Institute of Organic Chemistry and Biochemistry (IOCB Prague) and Martin Hrubý from the Czech Institute of Macromolecular Chemistry (IMC) recently led a group of researchers in the development of a new method of the cheap and easy creation of irradiated nanodiamonds and other nanomaterials. These new materials are useful in the diagnosis of diseases including several types of cancer. The article detailing the results of their efforts was just published in the journal Nature Communications.
       Sensitive and selective diagnostic instruments are required for diagnosing many diseases. Scientists are now able to track the behavior of magnetic and electric fields in living cells at a resolution of a few dozen nanometers. (A nanometer is one millionth of a meter.) They accomplish this by utilizing crystal defects in some types of inorganic materials. It turns out that nanodiamonds produced from graphite with very high temperatures and pressures are ideal for this purpose.
        Pure nanodiamonds cannot be used for diagnostics. In order to be applied to diagnostics, nanodiamonds must endure damage to their crystal lattices. Special defects called nitrogen-vacancy centers allow optical imaging. The usual way to generate these defects is to irradiate nanodiamonds with fast ions from particle accelerators. The fast ions knock carbon atoms out of the nanodiamonds crystal lattice and leave vacancies. Then nitrogen atoms which contaminate the nanodiamonds combine with the vacancies to create nitrogen-vacancy centers. These nitrogen-vacancy centers can fluoresce which results in visible light. This property can be used in diagnosis of diseases.
       The current system of generating defects in nanodiamonds is very expensive and very inefficient. This means that large quantities of these useful nanodiamonds cannot be produced. Now the research team from the Czech Republic has developed a new technique for the production of defects in nanodiamonds. Their new technique relies on the use of a nuclear reactor to irradiate the nanodiamonds to produce the desired defects.
       To produce the necessary defects, the nanodiamonds must first be dispersed in molten boron oxide. Then the molten boron is placed in a nuclear reactor and subjected to neutron bombardment. This results in the generation of a shower of helium and lithium ions which, in turn, create the desired defects in the nanodiamonds. This process allows the creation of one thousand times as many nanodiamonds containing nitrogen-vacancy centers
in a single batch as can be produced by the old method. Silicon carbide crystals can also have defects created by this method. In fact, it may turn out that the new method created by the Czech researchers can be used as a general technique for the controlled production of defects in a wide variety of crystals.
       The ability to inexpensively produce large quantities of nanodiamonds with nitrogen-vacancy centers will permit a much wider usage of these special nanodiamonds in the diagnosis of many types of cancers. This will lower the cost of diagnosis and will allow many people with developing cancers to be diagnosed in time for proper life-saving treatment.

Ambient office  = 99 nanosieverts per hour

Ambient outside = 124 nanosieverts per hour

Soil exposed to rain water = 126 nanosieverts per hour

Red bell pepper from Central Market = 126 nanosieverts per hour

Tap water = 74 nanosieverts per hour

Filter water = 63 nanosieverts per hour

        In 2010, the U.S. issued the 2010 Nuclear Posture Review of U.S. nuclear policy. This review linked China and Russia as potential major threats and provided detail of the U.S. development of missile defense systems and conventional prompt global strike (CPGS) systems. CPGS systems are under development which are intended to deliver airstrikes with conventional weapons to anywhere on the globe within one hour. The review placed a premium on reducing nuclear weapons and even suggested that the U.S. and China were mutually vulnerable.
       The 2010 NPR caused concern in some Chinese circles because they felt that it indicated that the U.S. was trying to attain absolute security at the expense of both China and Russia. They believed that the U.S. was looking to dominate both countries with the threat of the CPGS and the missile shield.
        Now the 2018 NPR has changed the emphasis for U.S. nuclear policy to a focus on nuclear weapons including low-yield nuclear warheads. The Chinese are still concerned about the possibility that a U.S. missile shield could prevent a Chinese retaliatory strike following a U.S. surprise attack. The interest in low-yield warheads supports the Chinese concern that it may weaken the U.S. policy of “no first strike.”
        There have been media reports that China is dedicating billions of dollars to AI research across a broad range of potential applications including military. Currently they have a special focus on unmanned AI for surveillance and aiding policing activities and counterterrorism activities. There is no indication that the Chinese are actively working on integrating AI into nuclear weapons systems.
         Nuclear weapons systems include early warning, decision support systems, tracking and targeting, simulation, discrimination, and missile defenses. AI includes machine learning, autonomous systems and other capabilities all of which could be useful for improving nuclear weapons systems. The Chinese 2015 Military Strategy document emphasized the need for rapid response. Considering the increasing volume of information that needs to be processed by military sensor systems these days, AI systems could be critical for quickly evaluating threats.
        China is very concerned about the possibility of a sudden attack by a nuclear armed adversary such as the U.S. China is working hard to counter new developments in the U.S. and Russia nuclear arsenals with improvement of their own nuclear weapons systems. Chinese nuclear policy is flexible and their “no first use” of nuclear weapons policy should not be though of as carved in stone. They will respond to changing nuclear capabilities by considering changes in their nuclear policy.
       There is no clear understanding of how and when China might integrate AI into their nuclear weapons systems. One big problem is the possibility that AI systems could be hacked, and nuclear weapons systems rendered unreliable or inoperative. It is also possible that AI systems could be attacked and caused to issue a false alert for a non-existent attack. This is part of the motivation to develop quantum encryption for military communication and data transfer.
       While the Chinese are interested in the application of AI systems to military systems, there are also strong calls for the inclusion of human beings in the chain of detection of and response to perceived threats. However, the time required for analysis and response is steadily shrinking and there may not be time for human beings to be involved in such decisions.