نتایج جستجو برای: toxic level
تعداد نتایج: 1149508 فیلتر نتایج به سال:
This study investigated the relationship of children's autism symptoms with their toxic metal body burden and red blood cell (RBC) glutathione levels. In children ages 3-8 years, the severity of autism was assessed using four tools: ADOS, PDD-BI, ATEC, and SAS. Toxic metal body burden was assessed by measuring urinary excretion of toxic metals, both before and after oral dimercaptosuccinic acid...
purpose: to describe the clinical signs, diagnosis and treatment of toxic keratopathy in a patient who abused tetracaine drops. case report: a 32-year-old man was referred to the emergency ward of our center with persistent corneal epithelial defect associated with a ring infiltrate in the corneal stroma, without any history of ocular trauma or contact lens use. the patient was hospitalized and...
a rapid and reproducible method is described that employs solid phase extraction (spe) using dichloromethane, followed by gas chromatograph-mass spectrometry for the determination of toxic toluene, xylene and cumene (txc) from different lake water of dhaka mega city of bangladesh. the method was applied to detect and quantify txc in water samples collected from surface and 30 cm depth of water....
in pakistan besides pesticide contamination from agricultural field, the manufacturing industriesare also contributing relatively high quantities of toxic pesticides into the environment. these pesticides maybe toxic, mutagenic or carginogenic and may be bioaccumulated or biomagnified by the biota. because ofpersistent nature of pesticides, its removal from environmental system become difficult...
polycyclic aromatic hydrocarbons (pahs) are toxic pollutants released by various urban combustion sources. tehran is the largest city in iran with a population of about 8 million and it is faced with serious air quality problems. the gas phase samples collected from 21 sites in tehran area throughout year 2005. the samples‘ pahs were collected using a skc trapping consisting of glass cartridg...
Fuzzy Water Quality Index (FWQI) was applied in order to assess the degree of drinking water resources in Yazd province, Iran. Thisstudy has also offered the creation of a new fuzzy water quality index (FWQI) to evaluate this tool’s applicability. 12 chemicalparameters including toxic and non-toxic heavy metals measured in 71 groundwater samples collected from drinking water resourcesin rural a...
Herein, a cysteine-functionalized derivative of TPE is presented as the first fluorescent organic dye for selective, label-free, sub-ppb level detection of As(3+) in aqueous media by taking the advantage of the aggregation induced emission feature. Besides, the first discrimination between the most toxic As(3+) and less toxic As(5+) was obtained.
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