نتایج جستجو برای: recent years
تعداد نتایج: 1487939 فیلتر نتایج به سال:
After three to four decades of substantial inlittle evidence of a trend, it is considered to crease, yields per acre of major U.S. crops aphave plateaued. The second objective is to pear to have tapered off. The average annual investigate whether a crop yield series, if rate of growth in crop yields' decreased trendless, is random or oscillatory and, if nonmarkedly from 2.7 percent for the 1950...
[1] We present a reconstruction of global sea level (GSL) since 1700 calculated from tide gauge records and analyse the evolution of global sea level acceleration during the past 300 years. We provide observational evidence that sea level acceleration up to the present has been about 0.01 mm/yr and appears to have started at the end of the 18th century. Sea level rose by 6 cm during the 19th ce...
This study defined a wealth index that was strongly correlated with a health indicator: the survival of children aged less than five years. This index allowed the most vulnerable social groups for health outcomes to be identified. These groups could become the target for focused interventions and in particular for health-insurance schemes. The study was based on a thorough analysis of data coll...
Biomedical informatics is a young, highly interdisciplinary field that is evolving quickly. It is important to know which published topics in generalist biomedical informatics journals elicit the most interest from the scientific community, and whether this interest changes over time, so that journals can better serve their readers. It is also important to understand whether free access to biom...
PURPOSE To present a case series on the management options for capillary hemangiomas involving the eyelid and orbit. METHODS This is a retrospective chart review of clinically diagnosed capillary hemangioma cases involving the periocular region treated at two local eye institutions. The patients' demographics and clinical presentation - including visual acuity, refractive error, periorbital a...
In recent years image watermarking has become an important research area in data security, confidentiality and image integrity. Many watermarking techniques were proposed for medical images. However, medical images, unlike most of images, require extreme care when embedding additional data within them because the additional information must not affect the image quality and readability. Also the...
The survival of a recent series of 823 cirrhosis patients who were followed up for a mean of 48 months was analyzed. Cirrhosis was ascribed to alcohol (26%), hepatitis virus B (58%), hepatitis virus C (11%) or both (2%), or was cryptogenic (3%). Features of decompensation were observed in 51% of the patients at entry, and newly developed in 44% of compensated patients within 5 yr. The 5-yr surv...
INTRODUCTION Wilms' tumour is the most frequent renal tumour in children. Multi-modal treatment includes chemotherapy and surgery, with or without radiotherapy. The survival is excellent, with rates exceeding 90%. A review is presented on our experience over the last 15 years of treating Wilms' tumour in Hospital Niño Jesús, Madrid. PATIENTS AND METHODS A retrospective study was conducted on ...
NSABP's B-14 trial was originally launched to evaluate whether women with lymph node – negative, estrogen receptor – positive breast cancer benefi t from tamoxifen treatment. Researchers also designed the trial to test the duration of tamoxifen therapy necessary to get the most benefi t from the drug. In late 1995, an analysis of the study data revealed that the benefi ts of 5 years of tamoxife...
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