Ash Content Modulation of Torsionally Derived Effective Material Properties in Cortical Mouse Bone

2003 ◽  
Vol 125 (5) ◽  
pp. 615-619 ◽  
Author(s):  
Todd C. Battaglia ◽  
An-Chi Tsou ◽  
Emerson A. Taylor ◽  
Borjana Mikic
Keyword(s):  
Shear Stress ◽  
Shear Modulus ◽  
Material Properties ◽  
Mineral Content ◽  
Ash Content ◽  
Exponential Factor ◽  
Effective Shear Modulus ◽  
Effective Material Properties ◽  
The Right ◽  
The Relationship

The purpose of this study was to evaluate the effects of isolated alterations in mineral content on mouse bone torsional properties. The femora and tibiae from 25 eight-week-old male A/J strain mice were divided into five groups and selectively decalcified from 5% to 20%. The right femora were then tested to failure in torsion while the tibiae were ashed to determine final mineral content of the decalcified bones. Contralateral femora were serially cross-sectioned to determine geometric properties, and effective material properties were then calculated from the geometric and structural properties of each femoral pair. We found that the relationship between ash content and effective shear modulus or maximum effective shear stress could best be characterized through a power law, with an exponential factor of 6.79 R2=0.85 and 4.04 R2=0.67, respectively. This indicates that in a murine model, as with other species, small changes in ash content significantly influence effective material properties. Furthermore, it appears that (in adolescent A/J strain mice) effective shear modulus is more heavily affected by changes in mineralization than is maximum effective shear stress when these properties are derived from whole bone torsional tests to failure.

Exact equations for fluid and solid substitution

Geophysics ◽  
2014 ◽  
Vol 79 (3) ◽  
pp. L21-L32 ◽  
Author(s):  
Nishank Saxena ◽  
Gary Mavko
Keyword(s):  
Shear Stress ◽  
Shear Modulus ◽  
Bulk Modulus ◽  
Fluid Substitution ◽  
Pore Shape ◽  
Effective Shear Modulus ◽  
Stiffness Measurement ◽  
Saturated Rock ◽  
Mean Stresses

We derived exact equations, elastic bulk and shear, for fluid and solid substitution in monomineralic isotropic rocks of arbitrary pore shape and suggested methods to obtain the required substitution parameters. We proved that the classical Gassmann’s bulk modulus equation for fluid-to-fluid substitution is exact for solid-to-solid substitution if compression-induced mean stresses (pressure) in initial and final pore solids are homogeneous and either the shear modulus of the substituted solid does not change or no shear stress is induced in pores. Moreover, when compression-induced mean stresses in initial and final pore solids are homogeneous, we evaluated exact generalizations of Gassmann’s bulk modulus equation, which depend on usually known parameters. For the effective shear modulus, we found general exactness conditions of Gassmann and other approximations. Using the new exact substitution equations, we interpreted that predicting solid-filled rock stiffness from a dry rock stiffness measurement requires more information (i.e., assumptions about the pore shape) compared to predicting the same from a fluid-saturated rock stiffness.

Contributions of Hamstring Stiffness to Straight-Leg-Raise and Sit-and-Reach Test Scores

2017 ◽  
Vol 39 (02) ◽  
pp. 110-114 ◽  
Author(s):  
Naokazu Miyamoto ◽  
Kosuke Hirata ◽  
Noriko Kimura ◽  
Eri Miyamoto-Mikami
Keyword(s):  
Shear Modulus ◽  
Test Scores ◽  
Correlation Coefficients ◽  
Shear Wave Elastography ◽  
Biceps Femoris ◽  
Muscle Stiffness ◽  
R Value ◽  
The Right ◽  
Straight Leg Raise ◽  
The Relationship

AbstractThe passive straight-leg-raise (PSLR) and the sit-and-reach (SR) tests have been widely used to assess hamstring extensibility. However, it remains unclear to what extent hamstring stiffness (a measure of material properties) contributes to PSLR and SR test scores. Therefore, we aimed to clarify the relationship between hamstring stiffness and PSLR and SR scores using ultrasound shear wave elastography. Ninety-eight healthy subjects completed the study. Each subject completed PSLR testing, and classic and modified SR testing of the right leg. Muscle shear modulus of the biceps femoris, semitendinosus, and semimembranosus was quantified as an index of muscle stiffness. The relationships between shear modulus of each muscle and PSLR or SR scores were calculated using Pearson’s product-moment correlation coefficients. Shear modulus of the semitendinosus and semimembranosus showed negative correlations with the two PSLR and two SR scores (absolute r value≤0.484). Shear modulus of the biceps femoris was significantly correlated with the PSLR score determined by the examiner and the modified SR score (absolute r value≤0.308). The present findings suggest that PSLR and SR test scores are strongly influenced by factors other than hamstring stiffness and therefore might not accurately evaluate hamstring stiffness.

Tanggung Jawab Hukum Penilai Publik terhadap Laporan Penilaian Kegiatan Pengadaan Tanah bagi Pembangunan untuk Kepentingan Umum (Studi Atas Kantor Jasa Penilai Publik Toto Suharto)

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
Gagah Yaumiyya Riyoprakoso ◽  
AM Hasan Ali ◽  
Fitriyani Zein
Keyword(s):  
Future Development ◽  
Public Interest ◽  
Legal Responsibility ◽  
Legal Research ◽  
The Public ◽  
The Government ◽  
Conducting Research ◽  
The Right ◽  
The Relationship ◽  
Systematic Explanation

This study is based on the legal responsibility of the assessment of public appraisal reports they make in land procurement activities for development in the public interest. Public assessment is obliged to always be accountable for their assessment. The type of research found in this thesis is a type of normative legal research with the right-hand of the statue approach and case approach. Normative legal research is a study that provides systematic explanation of rules governing a certain legal category, analyzing the relationship between regulations explaining areas of difficulty and possibly predicting future development. . After conducting research, researchers found that one of the causes that made the dispute was a lack of communication conducted between the Government and the landlord. In deliberation which should be the place where the parties find the meeting point between the parties on the magnitude of the damages that will be given, in the field is often used only for the delivery of the assessment of the compensation that has been done.

Rancangan Sistem Pengukuran Kinerja Berbasis Human Resource Scorecard Pada Universitas Muhammadiyah Luwuk

2020 ◽  
Vol 10 (1) ◽  
pp. 63-71
Author(s):  
Nurhaeda Abbas ◽  
Anggraini Sukmawati ◽  
Muhammad Syamsun
Keyword(s):  
Performance Measurement ◽  
Human Resource ◽  
Performance Measurement System ◽  
Group Discussions ◽  
Strategic Objectives ◽  
Depth Interview ◽  
And Performance ◽  
The Right ◽  
Hierarchy Process ◽  
The Relationship

Today the performance measurement of Muhammadiyah Luwuk uUniversity’s performance has not formulated yet based on University’s vision and mission. It will affect the strategic steps needed and performance improvement efforts in the future.  Human resource scorecard is the right system to be applied in Muhammadiyah Luwuk University. The purpose of this study is to designed a performance measurement system at Muhammadiyah Luwuk University using the Human Resource Scorecard with four perspectives: stakeholder, academic management and kemuhammadiyaan, operational and innovation, as well as and learning. Data was analyzed by analytical hierarchy process method. This research was conducted by distributing questionnaires, focus group discussions and in-depth interview with stakeholders at Muhammadiyah Luwuk University. The results showed that there were 14 strategic objectives and 33 key performance indicators to be achieved by the priority objectives, which are: empowerment and development of faculty, increased administrative process quality, improved sound budget performance and, improvement of the relationship with stakeholders.

Penanganan Issu Terkait Keselamatan Pasien di Rumah Sakit

2020 ◽  
Author(s):  
Kristin Natal Riang Gea
Keyword(s):  
Patient Safety ◽  
Health Workers ◽  
Sampling Technique ◽  
Good Health ◽  
Bivariate Analysis ◽  
P Value ◽  
Patient Identification ◽  
Cross Sectional ◽  
The Right ◽  
The Relationship

AbstrakKeselamatan pasien merupakan dasar dari pelayanan kesehatan yang baik. Pengetahuan tenaga kesehatan dalam sasaran keselamatan pasien terdiri dari ketepatan identifikasi pasien, peningkatan komunikasi yang efektif, peningkatan keamanan obat yang perlu diwaspadai, kepastian tepat lokasi, prosedur, dan tepat pasien operasi, pengurangan risiko infeksi, pengurangan risiko pasien jatuh. Tujuan penelitian untuk mengetahui hubungan antara pengetahuan dengan penerapan keselamatan pasien pada petugas kesehatan di Puskesmas Kedaung Wetan Kota Tangerang. Metode Penelitian menggunakan deskriptif korelasi menggunakan pendekatan cross sectional. Populasi sebanyak 50 responden. Teknik pengambilan sampel menggunakan total sampling. Instrumen yang digunakan berupa lembar kuesioner. Teknik analisa diatas menggunakan analisa Univariat dan Bivariat. Hasil Penelitian ada Hubungan Pengetahuan dengan Penerapan Keselamatan Pasien pada Petugas Kesehatan, dengan hasil, p value sebesar 0,013 < 0,05 maka dapat disimpulkan bahwa ada Hubungan Pengetahuan dengan Penerapa Keselamatan Pasien pada Petugas Kesehatan. Kesimpulan penelitian ada Hubungan Pengetahuan dengan Penerapan Keselamatan Pasien.. AbstrackPatient safety is the basis of good health services. Knowledge of health personnel in patient safety targets consists of accurate patient identification, increased effective communication, increased safety of the drug that needs to be watched, certainty in the right location, procedure, and precise patient surgery, reduction in risk of infection, reduction in risk of falling patients. The purpose of this study was to determine the relationship between knowledge and the application of patient safety to health workers in the Kedaung Wetan Health Center, Tangerang City. The research method uses descriptive correlation using cross sectional approach. The population is 50 respondents. The sampling technique uses total sampling. The instrument used was a questionnaire sheet. The analysis technique above uses Univariate and Bivariate analysis. The results of the study there is a Relationship of Knowledge with the Implementation of Patient Safety in Health Officers, with the result, p value of 0.013 <0.05, it can be concluded that there is a Relationship between Knowledge and Patient Safety Implementation in Health Officers. The conclusion of the study is the Relationship between Knowledge and the Implementation of Patient Safety.Keywords Knowledge, Patient safety, Health workers

Patent Foramen Ovale, the Role of Antiplatelet Therapy Alone or Anticoagulant Therapy Alone Versus Device Closure for Cryptogenic Stroke: A Review of the Literature and Current Recommendations

2020 ◽  
Vol 18 (2) ◽  
pp. 135-150
Author(s):  
Harsha S. Nagarajarao ◽  
Chandra P. Ojha ◽  
Archana Kedar ◽  
Debabrata Mukherjee
Keyword(s):  
Patent Foramen Ovale ◽  
Cryptogenic Stroke ◽  
Narrow Channel ◽  
Paradoxical Embolism ◽  
Current Evidence ◽  
Foramen Ovale ◽  
The Right ◽  
The Relationship ◽  
Current Guidelines

: Cryptogenic stroke and its relation to the Patent Foramen Ovale (PFO) is a long-debated topic. Recent clinical trials have unequivocally established the relationship between cryptogenic strokes and paradoxical embolism across the PFO. This slit-like communication exists in everyone before birth, but most often closes shortly after birth. PFO may persist as a narrow channel of communication between the right and left atria in approximately 25-27% of adults. : In this review, we examine the clinical relevance of the PFO with analysis of the latest trials evaluating catheter-based closure of PFO’s for cryptogenic stroke. We also review the current evidence examining the use of antiplatelet medications versus anticoagulants for stroke prevention in those patients with PFO who do not qualify for closure per current guidelines.

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