Boron-10 has a high thermal neutron capture cross section (3880 barns). Following neutron capture, the subsequent nuclear disintegration produces an alpha particle and a lithium-7 nucleus with the release of an average of 2.34 MeV for the particle irradiation, and in 93% of the reactions there is also the emission of an 0.48 MeV gamma ray: [equation not transcribed]. The kinetic energy is divided between the lithium-7 nucleus and the alpha particle giving the equal and opposite momentums with a range in tissue of about 8-14μ or approximately 1 cell diameter (1). This fact and the reported favorable partition of boron between tumor and the normal brain suggested a possible therapeutic usefulness which has been investigated clinically. The object of our study is to document the biological effects of the B10 (n,α) Li7 reaction on the brain of dogs injected with boron-10 30 minutes prior to irradiation with thermal neutrons. For this, we felt it desirable to estimate a dose for the boron-10 reaction which if exceeded, produces destruction of normal tissue. This dose could then be a reference dose to be utilized as a maximal limit for the irradiation of normal tissue. We have assured that the largest fluence …

The biological evaluation of the thermal neutron capture reaction of boron-10, B10 (n,α)Li7 + 2.786 MeV, has previously been studied, using different particles from the boron-10 thermal neutron capture reaction compared with 250 kvp x-rays has been reported as 1.05 for spleen-thymic weight reduction (1), as 1.5 to 2.0 for skin lesions in pigs (2), and 1.87 for skin lesions of the rabbit's ear (3). The significance of such a calculation is felt to be unreliable for the boron-10 reaction in animals because of the vagaries of dose determination resulting from irregular boron distribution, and by the presence of an adventitious irradiation from fast neutrons and capture gammas that is inadequately determined at present. Our present experiment attempts to circumvent the difficulties attendent to studies of the boron-10 reaction in animals by comparing the effect of this reaction on the proliferative capacity of HeLa cells with those produced with 250 kvp x-ray.

This report provides a brief overview of the European Union (EU), an economic and political partnership between 27 sovereign member states. The report describes the formation of the EU, the three main institutions of the EU, and the EU's relationship with the United States.

Patent for improvements in power driven implement frames, specifically in tractors, with illustrations.

Patent for a mirror holder containing a bracket that allows for easy fixing to various items of furniture.

None

Report that provides background on the development of intelligence satellites and identifies the roles various agencies play in their management and use. Issues surrounding the current policy and proposed changes are discussed, followed by a discussion of legal considerations.

Patent for a temple bow for spectacles which is secured to a lens frame and is adjustable to “accommodate the angle of vision of the wearer” (lines 89-90). The connection joints between the bow and lens frame allows adjustment without bending or twisting the bow, providing a more durable bow and frame.

This report examines reform priorities from the perspective of several key actors, including Members of Congress, the Obama Administration, selected member states, the U.N. Secretary-General, and a cross-section of groups tasked with addressing U.N. reform. It also discusses congressional actions related to U.N. reform and mechanisms for implementing reform, as well as possible challenges facing U.S. policy makers as they consider existing and future U.N. reform efforts.

In these lectures we will discuss some examples of information about magnetic properties of solids which can be obtained by neutron scattering. We consider a scattering process in which a neutron with wave vector k and spin σ is incident upon a solid in state q>. (Here q stands for all of the quantum numbers which describe the state of the solid, such as spin and orbital electronic states, phonon numbers, etc.) After interacting with the solid, the neutron goes off with wave-vector k' and spin σ', leaving the solid in state q'>. In performing an experiment of this sort one does not usually observe the initial and final spin states of the neutron or the initial and final states of the solid. We must then sum over all possible final states and average over all initial states.

Report that provides background on the current effort to develop industrial-scale, competitive technology to produce biofuels from cellulosic feedstocks.

Abstract. While the concept of a biological system as a balanced network of chemical transformations is not a new one, experimental definition of specific systems has been lacking. This paper defines theoretically and experimentally a number of such networks and their behavior and response to some limited environmental changes.

None

This report provides details of WIA Title I state formula program structure, services, allocation formulas, and performance accountability. In addition, it provides a program overview for national grant programs. It also provides brief overviews of Titles II and IV. Title III of WIA amends the Wagner-Peyser Act of 1933, which establishes the Employment Service (ES), to make the ES an integral part of the One-Stop system created by WIA. Because the ES is a central part of the One-Stop system, it is discussed briefly in this report even though it is authorized by separate legislation (Wagner-Peyser Act of 1933).

This report discusses proposed and passed legislation in the 92nd Congress related to parks and recreation.

The purpose of this report is to describe and discuss the provisions for providing abortion services to military personnel, their dependents, and other military health care beneficiaries at military medical facilities. The report describes the history of these provisions, with particular emphasis on legislative actions. Finally, this report discusses a number of proposals to modify the law, as well as other related legislative and administrative actions.

The absorption in lead of Bremsstrahlung X radiation from a Sr^90 TiO3 pellet in the proximity of Hastelloy "C" was measured. The tenth value layer of the more energetic components of the X-ray continuum was determined to be 1.60 inches.

Patent for a new and improved coupling for railroad cars. This design consists "[i]n a car-coupler, the coupler having at its forward end a loop or link, hook, and connected rigidly with the ball or any suitable device moving in a passage" (lines 78-81).

Report that looks at Japan-U.S. relations since WWII. The report focuses on some problems which can be addressed by Congress, including the earthquake and tsunami which hit Japan in March, 2011, the Futenma Marine Air Station in Okinawa, bilateral trade, and economic issues resulting from the recent credit crisis and related economic recession.

Patent for a traction engine that has a unique assemblage of the frame and body making it most efficient.

Patent for work engaging support for surface treating machines. Intent of patent is to provide support for revolving sections of machinery in order to provide greater stabilization.

This report describes the various reporting requirements in the Emergency Economic Stabilization Act of 2008 (EESA) and is organized according to the entities required to prepare and submit the reports. It also provides some concluding observations regarding those requirements.

This report discusses the health benefits for federal employees through the Federal Employees Health Benefits (FEHB) Program.

This report provides background on military base closures and an analysis of community economic impacts, planning for economic redevelopment, and environmental cleanup following closures. The most recent Base Realignment and Closure (BRAC) Commission rejected 13 of the initial Department of Defense recommendations, significantly modified the recommendations for 13 other installations, and approved 22 major closures.