نتایج جستجو برای: 000 years and 120

تعداد نتایج: 16893141  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده علوم طبیعی 1391

in recent years many researchers have been focused on interaction of small molecules with dna. dna is generally the primary intracellular of anticancer drugs, so the interaction between small molecules and dna can cause dna damage in cancer cells, blocking the division of cancer cells and resulting in cell death. the flavonoids are a large group of polyphenolic natural products that are widely ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Journal: :BMJ 1999
A Easton

Doctors paid on a fee for service basis write more prescriptions for antibiotics than their salaried counterparts, according to recently published Canadian research. Researchers found Newfoundland’s 322 fee paid general practitioners were much more likely to prescribe at rates in excess of the provincial median 1.5 prescriptions per patient annually. In addition, the busier the doctors’ practic...

Journal: :The European respiratory journal 2016
Jennifer K Quint Elizabeth R C Millett Miland Joshi Vidya Navaratnam Sara L Thomas John R Hurst Liam Smeeth Jeremy S Brown

There is a paucity of data on incidence, prevalence and mortality associated with non-cystic fibrosis bronchiectasis.Using the Clinical Practice Research Datalink for participants registered between January 1, 2004 and December 31, 2013, we determined incidence, prevalence and mortality associated with bronchiectasis in the UK and investigated changes over time.The incidence and point prevalenc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - پژوهشکده تربیت بدنی و علوم ورزشی 1391

چکیده معضل چاقی به عنوان عارضه ای جدی برای زندگی بی تحرک و ماشینی، مورد توجه اغلب مراکز بهداشتی و درمانی دنیا قرار گرفته است. چاقی عامل زمینه ساز و در واقع عامل خطری برای بروز بیماری های قلبی - عروقی است که عموماً با کاهش طول عمر مورد انتظار و افزایش بیماری همراه است. هدف پژوهش حاضر تأثیر 12 هفته تمرینات ویبریشن کل بدن، تمرینات هوازی و تمرینات ترکیبی( هوازی و ویبریشن کل بدن) بر ترکیب بدنی زنان ...

Journal: :Remote Sensing 2023

Global climate change, especially extreme drought events, presents a complicated challenge to humanity and Earth’s system in the 21st century. As an extremely important carbon sink region China, Southwest China has encountered frequent disasters recent decades. It is critical explore frequency, duration, severity, other associated characteristics of events as well their spatial temporal pattern...

2006
W. F. Ruddiman

The origin of the major ice-sheet variations during the last 2.7 million years is a long-standing mystery. Neither the dominant 41 000-year cycles in δ18O/ice-volume during the late Pliocene and early Pleistocene nor the latePleistocene oscillations near 100 000 years is a linear (“Milankovitch”) response to summer insolation forcing. Both responses must result from non-linear behavior within t...

2016
WILLIAM D. GOSLING DAVID B. KEMP ANGELA L. COE IAIN GILMOUR

A paucity of empirical non-marine data means that uncertainty surrounds the impact of climate change on terrestrial ecosystems in tropical regions beyond the last glacial period. The sedimentary fill of the Bosumtwi impact crater (Ghana) provides the longest continuous Quaternary terrestrial archive of environmental change in West Africa, spanning the last 1.08 million years. Here we explore th...

Journal: :European heart journal 2007
Ali Ahmed Faiez Zannad Thomas E Love Jose Tallaj Mihai Gheorghiade Olaniyi James Ekundayo Bertram Pitt

AIMS Potassium homeostasis is essential for normal myocardial function, and low serum potassium may cause fatal arrhythmias. However, the association of low potassium and long-term mortality and morbidity in heart failure (HF) is largely unknown. METHODS AND RESULTS We studied 6845 HF patients in the Digitalis Investigation Group trial with serum potassium levels < or =5.5 mEq/L. Of these, 11...

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