Stress Response in Confined Arrays of Frictional and Frictionless Particles

Stress transmission inside three dimensional granular packings is investigated using computer simulations. Localized force perturbation techniques are implemented for frictionless and frictional shallow, ordered, granular arrays confined by solid boundaries for a range of system sizes. Stress response profiles for frictional packings agree well with the predictions for the semi-infinite half plane of classical isotropic elasticity theory down to boxes of linear dimensions of approximately forty particle diameters and over several orders of magnitude in the applied force. The response profiles for frictionless packings exhibit a transitional regime to strongly anisotropic features with increasing box size. The differences between the nature of the stress response are shown to be characterized by very different particle displacement fields.Comment: To appear in J. Sta

Model of Empowerment to Improve Autonomy Directly Observed Treatment (DOT) Tuberculosis Patients

Empowerment as not yet optimal health promotion efforts done to enhance the autonomy of Directly Observed Treatment (DOT), which affect the success of the recovery of patients with pulmonary tuberculosis. The purpose of research was to develop a model empowerment based on Health Promotion and Health Literacy with approach to nursing intervention in an effort enhance the autonomy of the DOT - pulmonary TB patients. The method was an observational analytic with cross sectional approach. Multistage random sampling was DOT-pulmonary TB patients to decide the district and simple random sampling was assigned to choose the participants, a total of 253 DOT- pulmonary TB patients new case with acid resistant bacilli positive on the advanced phase in this study. The study conducted in five districts in Surabaya City (center, north, south, east and west). Data were collected by questionnaire on variables namely personal, cognitive and affective, nursing intervention, commitment, family supports, health literacy and DOT- autonomy. Structural Equation Modeling (SEM) with LISREL is used for constructing predictive model. Result : This study found a new model which was developed based on combination of Health Promotion Model (HPM) and Health Literacy (HL). Statistical result confirm that personal, cognitive and affective, health literacy and family support considered as important factors in improving DOT-autonomy. Conclusion : DOT- autonomy will improve by considering four main factors, personal, cognitive and affective, health literacy, family support. This model can be adapted by District Health Office Surabaya City as the main actor regional health development. In addition, this model may become a reference for other district in improving their nursing intervention in community setting

Maximizing Societal Contributions of Latino Adults by Investing in Latino Children's Health Care

Focuses on the lack of preventive care and health insurance coverage for Latino children, and how this affects their health and school performance and impacts their ability to contribute as adults to California's economy and society

Penerapan Model Pembelajaran Kooperatif Tipe Snowball Drillinguntuk Meningkatkan Prestasi Belajar Siswa pada Pokok Bahasan Sistem Periodik Unsur di Kelas X SMA Negeri 1 Inuman

This research aims to increase student achievementon the subject Sistem periodic unsure inclass XSMAN 1 Inuman. This research is a kind of experiment research with pretest-posttest design. The research was conducted in SMAN 1 Inuman.The samples of this research were the students of class X MIA 2 as the experimental class and students of class X MIA 1 as the control class.Experimental class is a class that is cooperative learning model Snowball Drilling, while the control class was not. Data analysis technique used is the t-test. Based on analysis of data obtained tarithmetic> ttable is 2,7761 > 1,66, means that the application of cooperative learning model Snowball Drilling can improve student achievement on the subject of system periodic unsurein class X SMAN 1 Inumanincrease learning achievement category in the experimental class is based on the normalized gain scores (N-Gain) relatively high at 0,7806

The Synthesis of Angucyclines using an Intramolecular Bradsher Cycloaddition

The Angucyclines are natural products which possess a broad spectrum of biological properties. Of particular interest are the natural products which contain the cis-hydroxyl motif at the AB ring junction. Their synthesis is particularly challenging. Our model study has resulted in the synthesis of a model of the angucyclines with the required cis-hydroxyl features. The present work will apply the previously developed chemistry to an intramolecular version which will lead to the synthesis of the ABC ring syste