Neutron scattering studies of industry-relevant materials: connecting microscopic behavior to applied properties

Certain systems of oxides, nitrides and carbides have been recognized as the basic components of advanced materials for applications as engineering and electronic ceramics, catalysts, sensors, etc. under extreme environments. An understanding of the basic atomic and electronic properties of these systems will benefit enormously the industrial development, of new materials featuring tailored properties. We present an overview of neutron-scattering studies of the crystal phases, microstructure, phonon and magnetic excitations of key materials including rare-earth phosphates, phosphate glasses, nanostructured metal oxides, as well as silicon nitride and silicon carbide ceramics. A close collaboration among neutron-scattering experimentation, molecular-dynamics simulation and material synthesis is emphasized

Microwave mobilities of holes in p-type geranium

Hall mobilities of an n-type (GN l) and a p-type (GP 2) germanium single crystal were measured at a microwave frequency of 9 Gc/ sec from 80 °K to 300 °K. A bimodal rectangular cavity designed by Nishina was used in the present investigation. The microwave circuit was nearly the same as that described by Nishina except that the microwave signal was modulated by 1000 cycle per second square-wave signal. The microwave mobilities measured (with sample size correction factor of 0. 423 for n-type and 0. 687 for p-type germanium) were compared with the corresponding d. c. Hall mobilities. For n-type germanium, the discrepancy between the d. c. and microwave mobilities was believed to be predominatly due to the E: -1/2 dependence of the relaxation time (acoustical mode scattering). For p-type germanium, a large deviation occurred at low temperatures and was in agreement with the results obtained by Hambleton et al. and by Watanabe. This result might be explained qualitatively as a combined effect of lattice and impurity scattering, particularly the effect of impurity scattering on the light mass holes

Compact accelerator-driven neutron sources

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Mechanistic and pathological study of the genesis, growth, and rupture of abdominal aortic aneurysms

Postprint (published version

Crystal phases, microstructure and surface chemistry of industry-relevant nanostructured metal oxides.

Industries response keenly to two factors: the costs of materials and processing, and regulatory forces imposed by governments. The method of neutron scattering maybe applied to address these concerns. Slow (cold to epithermal) neutrons probe the organization and dynamic response of atomic nuclei and electrons in a substance thereby providing valuable knowledge toward the development of cost-effective means for materials preparation and possessing. Neutron facilities for basic research are funded by governments, thus these organizations are obliged to provide technical support to industries for the fulfillment of governmental policies. I hope to argue, based on these premises, the mutual beneficialness of a close collaboration between the industrial-research and neutron-scattering communities. In order to limit the scope of discussion, I shall illustrate the potential applications of neutron scattering for industrial problems by some recent studies of nanostructured metal-oxide catalysts

Update in Antiepidermal Growth Factor Receptor Therapy in the Management of Metastatic Colorectal Cancer

The approval of anti-epidermal growth factor receptor (EGFR) monoclonal antibodies in the treatment of metastatic colorectal cancer (CRC) has expanded the armamentarium against this disease. This paper will review the historical progress and recent clinical developments of anti-EGFR therapies in the treatment of metastatic CRC. Novel strategies of targeting the EGFR pathway to improve efficacy as well as ongoing research in identifying specific molecular predictors of response will be discussed

Hubungan Antara Asupan Zat Gizi Makro Dengan Obesitas Pada Wanita Usia Subur Peserta Jamkesmas Di Puskesmas Wawonasa Kecamatan Singkil Manado

: Nowadays, incident of obesity also can be found in poverty population with low educational level. This condition affect on the rising consumption of high-fat food and energy-dense sugar in this population. The purpose of this research is to know the correlation of macro nutrients intake and obesity at the women of childbearing age as Jamkesmas member in Wawonasa, Singkil, Manado. This research is using cross–sectional design and has taking sample in Wawonasa clinic, Singkil, Manado for a month, that is from November till December 2012. Sampling method is purposive sampling with 77 subject who had been measured for body height and body weight and also had been interviewed using recall method 24th hours to take the data for macro nutrients intake those are carbohydrate, protein, and fat that had been consumed one day before. The data from the research was being analyzed with chi–square analysis test with α = 0,05. The result of analysis show there is no relation of carbohydrate intake and obesity (p=0,980), no relation of protein intake and obesity (p=0,602), and there is no-significant relation of fat intake and obesity (p=0,265). The conclusion from this research is no relation of macro nutrients intake and obesity at women of childbearing age as Jamkesmas member in Wawonasa clinic, Singkil, Manado

Control Management and Business Performances: the Malaysian Family SMEs Perspectives

This study examined the relationship between control management and family business performance in the Malaysian context. It has two objectives, the first being to determine the relationship of organizational credit control policy and procedures, employee development and motivation, and intelligence collection systems to subsequent collection reports in Malaysian family SMEs. The second objective is to investigate the moderating effect of participation in decision-making and work effort towards innovation and business performance. This is a descriptive study involving 90 senior executives employed in 90 Malaysian family SMEs/firms. A correlation analysis from this study confirmed previous researchers’ observations that high-level organizational commitment to credit control management is linked to improvements in business performance. The results suggest that three components – credit policy, employee development, and intelligence collection systems – are the most important predictors for the efficiency and effectiveness of credit control management.   &nbsp

Research opportunities with compact accelerator-driven neutron sources

Since the discovery of the neutron in 1934 neutron beams have been used in a very broad range of applications, As an aging fleet of nuclear reactor sources is retired the use of compact accelerator–driven neutron sources (CANS) are becoming more prevalent. CANS are playing a significant and expanding role in research and development in science and engineering, as well as in education and training. In the realm of multidisciplinary applications, CANS offer opportunities over a wide range of technical utilization, from interrogation of civil structures to medical therapy to cultural heritage study. This paper aims to provide the first comprehensive overview of the history, current status of operation, and ongoing development of CANS worldwide. The basic physics and engineering regarding neutron production by accelerators, target-moderator systems, and beam line instrumentation are introduced, followed by an extensive discussion of various evolving applications currently exploited at CANS