نتایج جستجو برای: dynamic strain ageing
تعداد نتایج: 641406 فیلتر نتایج به سال:
AIMS We used speckle tracking echocardiography (STE) to make a comparison between the effects of ageing and of heart failure with normal ejection fraction (HfnEF) on left ventricular (LV) torsion and strain patterns. METHODS AND RESULTS Forty patients with HfnEF, 27 young controls and 26 older controls, were prospectively recruited. All subjects underwent clinical examination, 12-lead electro...
به منظور بررسی تأثیر باکتری های ازتوباکتر و سودوموناس و سطوح مختلف کود شیمیایی بر کمّیت و کیفیت علوفه شلغم علوفه ای(brassica rapa l.) آزمایشی در سال زراعی 91-1390 در مزرعه ی پژوهشی موسسه ی تحقیقات برنج کشور (رشت) در قالب طرح بلوک های کامل تصادفی با 14 تیمار و سه تکرار اجرا شد. تیمارهای آزمایشی شامل شاهد (بدون کود و بدون تلقیح)، کود کامل شیمیایی و بدون تلقیح، تلقیح با azotobacter chroococcum stra...
به منظور مطالعه اثر محلولپاشی باکتریهای محرک رشد گیاه و متابولیتهای آنها بر عملکرد کمی و کیفی برنج رقم هاشمی، آزمایشی در گلخانه دانشکده علوم کشاورزی، دانشگاه گیلان در قالب طرح بلوک کامل تصادفی در 4 تکرار در سال 1389 به اجرا درآمد. تیمارهای مورد بررسی در این تحقیق شامل سویه های مختلف باکتری محرک رشد و متابولیت های حاصل از آنها بود که عبارت بودند از: بدون محلولپاشی و بدون کود (تیمار شاهد)، بدون م...
The influence of Zr additions (in the form ZrH2 particles) on microstructure and mechanical properties IN718 Ni-based superalloy manufactured by selective laser melting was explored. Fully dense alloys could be obtained careful selection processing parameters. addition did not modify alloy but introduced a dispersion Zr-rich globular particles approximately 50 nm in diameter which increased str...
MITOCHONDRIAL DNA AND AGEING Osteoarthritis (OA) is the most common form of arthritis affecting more than 12% of people over the age of 60. Although late-onset articular cartilage degeneration is common and age is one of the most important risk factors for the disease, the relationship between old age and OA is not fully understood. In the past it was believed that the link with age was due to ...
OBJECTIVE With increasing life expectancy, there is a focus on "healthy ageing". Most activities in this area focus on the elderly. However, the ageing process starts much earlier. Childhood offers an important window to lay a base for future healthy ageing. Thus, to address the full ageing process, we should include younger populations in ageing research. If we aim for healthy ageing across th...
This study has investigated the creep properties of asphaltic concrete modified with different dosages of waste polyethylene terephthalate (PET) in two different ranges of size. Uniaxial dynamic creep test at 40°C was conducted on the cylindrical specimens of the mixtures. The load was applied in two different frequencies of 0.5 and 5Hz. Creep test results showed that the accumulated strain und...
The global increase in energy consumption and the global warming from greenhouse gas emission creates the need for more environmental friendly energy production processes. Biomass power plants with higher efficiency could generate more energy but also reduce the emission of greenhouse gases, e.g. CO2. Biomass is the largest global contributor to renewable energy and offers no net contribution o...
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