نتایج جستجو برای: deep and half
تعداد نتایج: 16878984 فیلتر نتایج به سال:
Deep Vein Thrombosis, Pulmonary Embolism and Related Factors in Patients with Traumatic Brain Injury
Background and Objective:Deep vein thrombosis and pulmonary embolism are fatal problems following brain trauma that, if left untreated, can dramatically increase mortality. Therefore, the present study aimed to evaluate deep vein thrombosis, pulmonary embolism and related factors in patients with traumatic brain injury. Materials and Methods:This cross-sectional study was performed on 38 patie...
The photosynthetic production of oxygen in the oceans is thought to have begun by 2.7 billion years ago, several hundred million years before appreciable accumulation of oxygen in the atmosphere. However, the abundance and distribution of dissolved oxygen in the late Archaean oceans is poorly constrained. Here we present geochemical profiles from 2.6to 2.5-billion-year-old black shales from the...
Introduction: The advent of antibiotics and the improvement in dental hygiene have made the occurrence of deep neck infections less frequent than in the past. Nevertheless, the complications of these infections are often life threatening. The purpose of this study was to review the clinical findings in deep neck infections and identification predisposing factors of these complications. Material...
Epiboly, the enveloping of the yolk cell by the blastoderm, is the first zebrafish morphogenetic movement. We isolated four mutations that affect epiboly: half baked, avalanche, lawine and weg. Homozygous mutant embryos arrest the vegetal progress of the deep cells of the blastoderm; only the yolk syncytial layer of the yolk cell and the enveloping layer of the blastoderm reach the vegetal pole...
Covering: 2009 to 2013. This review covers the 188 novel marine natural products described since 2008, from deep-water (50->5000 m) marine fauna including bryozoa, chordata, cnidaria, echinodermata, microorganisms, mollusca and porifera. The structures of the new compounds and details of the source organism, depth of collection and country of origin are presented, along with any relevant biolog...
This paper proposes adversarial attacks for Reinforcement Learning (RL) and then improves the robustness of Deep Reinforcement Learning algorithms (DRL) to parameter uncertainties with the help of these attacks. We show that even a naively engineered attack successfully degrades the performance of DRL algorithm. We further improve the attack using gradient information of an engineered loss func...
most scientists believe that the phenomenon of global warming occurred, however, in the case of the occurrence of this phenomenon by some environmental scientists have raised doubts. they are questioning global warming by arguing that the temperature recorded at the weather stations cannot be representative of the occurrence of the temperature rise. because with the passage of time and the incr...
Background and purpose: Abdominal aortic aneurysms (AAA) is a localized enlargement of infrarenal abdominal aorta. Endovascular aneurysm repair (EVAR) is a surgical method introduced for AAA repair. This study, for the first time in Iran, investigated the complications and mortality rate associated with EVAR. Materials and methods: In this cross-sectional study, medical records were reviewed...
We constructed the first deep ultraviolet (UV) Raman standoff wide-field imaging spectrometer. Our novel deep UV imaging spectrometer utilizes a photonic crystal to select Raman spectral regions for detection. The photonic crystal is composed of highly charged, monodisperse 35.5 ± 2.9 nm silica nanoparticles that self-assemble in solution to produce a face centered cubic crystalline colloidal a...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید