نتایج جستجو برای: term exposure
تعداد نتایج: 862601 فیلتر نتایج به سال:
BACKGROUND Recent studies have shown an association of short-term exposure to fine particulate matter (PM) with transient increases in blood pressure (BP), but it is unclear whether long-term exposure has an effect on arterial BP and hypertension. OBJECTIVES We investigated the cross-sectional association of residential long-term PM exposure with arterial BP and hypertension, taking short-ter...
BACKGROUND Previous studies have associated short-term air pollution exposure with depression. Although an animal study showed an association between long-term exposure to particulate matter ≤ 2.5 μm (PM2.5) and depression, epidemiological studies assessing the long-term association are scarce. OBJECTIVE We aimed to determine the association between long-term PM2.5 exposure and major depressi...
[no abstract available]
800x600 background: binaural beats (binaural tones) are sound waves created by specific physical stimuli which are believed to induce relaxation, meditation, creativity and other forms of desirable mental states. to experience the binaural beats perception, a sound file should be listened using headphones. the difference in frequencies of each tone (e.g. f1 hz in right ear and f2 hz in left ear...
introduction: laser pointers are devices that produce a weak laser beam of 630-680 nmwavelength and 1-5 mw power (classii or iii a laser). these devices generally emit a redbeam that is used by lecturers and teachers for presentations. some children use pointers astoys and sometimes direct the beam to their own or others' eyes. material and methods: following irradiation by a laser pointer beam...
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background: drug resistance is widely believed to be an increasingly serious threat to global public health. we have previously reported that short term exposure of microorganisms to diagnostic ultrasound waves could significantly alter their sensitivity to antibiotics. in our previous studies, klebsiella pneumoniae showed major differences in the sensitivity to antibiotics in exposed and non-e...
Background: This investigation describes the cyto-architectural alterations observed in the corpuscles of Stannius of stinging catfish Heteropneustes fossilis after treatment with a botanical pesticide Nerium indicum. Methods: Heteropneustes fossilis were subjected to 11.27 and 2.81 mg/L of Nerium indicum leaf extract over short- and long-term exposure periods, respectively. Blood was collecte...
Hypertension is a major disease of burden worldwide. Previous studies have indicated that air pollution might be a risk factor for hypertension, but the results were controversial. To fill this gap, we performed a meta-analysis of epidemiological studies to investigate the associations of short-term and long-term exposure to ambient air pollutants with hypertension. We searched all of the studi...
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