نتایج جستجو برای: rising limb
تعداد نتایج: 108005 فیلتر نتایج به سال:
purpose: microgravity causes major changes in various systems of the body in space, such as shift in cerebrospinal fluid, decreased red blood cells count, and electrolyte loss. these complications are very important in space and we should find new approaches to prevent the side effects of microgravity in astronauts. materials and methods: this experimental study was conducted on 21 adult male r...
In this study, an ensemble machine learning model was developed to predict the recovery rate of water quality in a treatment plant after disturbance. XGBoost, one most popular models, used as main framework model. Water and operational data observed pilot were train test Disturbance determined when turbidity higher than given criteria. Therefore, at time t defined during falling limb period. It...
objective(s): the aim of study was to determine history of genitourinary diseases in war related bilateral lower limb amputees who were injured during iran-iraq war (1980-1988). methods: subjects with war related bilateral lower limb amputation (335 persons) were examined by two physicians for any history of genitourinary diseases and their documents were reviewed. results: the mean age was...
The magnitude, frequency, duration, timing, and rate of change of hydrologic conditions regulate ecological processes in aquatic ecosystems. Conditions are typically characterized using annual-based hydrologic indices derived from daily and/or monthly stream flow data. In this study, we present an alternative approach to identify hydrologic indices based on storm hydrographs. Hydrologic indices...
A method has been developed for performing autonomous Lunar orbit determination based on measurements of the times at which stars set behind or rise above the Lunar limb. This system is being developed as a possible technology for use in the Lunar exploration initiative because it enables increased autonomy of operations near the Moon. The system consists of a specially modified star camera and...
A detailed analysis of a particularly intense polar plume observed on the 25th of October, 1996, by the Coronal Diagnostic Spectrometer (CDS) on board the Solar and Heliospheric Observatory (SOHO) is presented. Above the limb, emission measure distributions derived for both the plume and a section of coronal hole background are found to be sharply peaked at approximately 1.0–1.1 million degrees...
One of the important parameters of the ubiquitous spicules rising intermittently above the surface of the Sun is the variation of spicule spline orientation with respect to the solar coordinates, presumably reflecting the focusing of ejection by the coronal magnetic field. Here we first use a method of tracing limb spicules using a combination of second derivative operators in multiple directio...
Theoretical neuroscience has experienced explosive growth over the past 20 years. In addition to bringing new researchers into the field with backgrounds in physics, mathematics, computer science, and engineering, theoretical approaches have helped to introduce new ideas and shape directions of neuroscience research. This review presents some of the developments that have occurred and the lesso...
Homo naledi is a previously-unknown species of extinct hominin discovered within the Dinaledi Chamber of the Rising Star cave system, Cradle of Humankind, South Africa. This species is characterized by body mass and stature similar to small-bodied human populations but a small endocranial volume similar to australopiths. Cranial morphology of H. naledi is unique, but most similar to early Homo ...
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