نتایج جستجو برای: nano cuso4
تعداد نتایج: 51249 فیلتر نتایج به سال:
در این رساله، روشهای احیایی نوین، بسیار موثر و سبز با استفاده از سدیم سیانو بوروهیدرید برای احیای گروههای عاملی کربونیلی، نیترو و اکسیم به صورت زیر ارائه می شود: - احیای ترکیبات کربونیلی با استفاده از nabh3cn در حضور nano fe3o4/h2so4 در دمای اتاق و شرایط بدون حلال - احیای ترکیبات کربونیلی با استفاده از nabh3cn در حضور nano fe3o4@sio2/h2so4 در دمای اتاق و شرایط بدون حلال - احیای ترکیبات کربون...
The sources of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) found in animal feed additive (feed grade cupric sulfate, CuSO4) were investigated and traced back to the formation of chlorinated organic compounds in the chlor-alkali industry. PCDD/Fs could be transported through the supply chain: hydrochloric acid (HCl) by-produced during formation of chlorinated organic compounds in c...
We developed an FIA system equipped with a chemiluminescence detector using a mixed chemiluminescence reagent of luminol and 1,10-phenanthroline for the detection of metal ions and metal complexes. The carrier, mixed chemiluminescence reagent comprising luminol, 1,10-phenanthroline, and cethyltrimethylammonium bromide, and H2O2 solutions were fed by corresponding pumps at a definite flow rate. ...
در سالهای اخیر تلاش زیادی برای سنتز کمپلکس های سوپرامولکول و پلیمرهای کوئوردیناسیونی بر مبنای لیگاندهای آلی چند دندانه شده است. این مواد به دلیل داشتن خواص منحصر به فرد، کاربردهای زیادی در صنعت دارند. سنتز پلیمرهای کوئوردیناسیونی جدید از سرب(ii) در ابعاد بالک(توده) و نانو با استفاده از روش گرادیان دمایی و به روش شاخه جانبی صورت گرفته و با روش طیف سنجی ir و پایداری گرمایی آن ها توسط آنالیزهای وز...
Background: Copper is a trace element vital to life, but the toxic effect of water pollution with it on fish is now exhibited. Fish blood is susceptible to contaminationinduced stress and its alternation due to the hematological and immunological parameters can be utilized as toxicity indices of xenobiotics. Methods: In this study, juvenile species of silver carp with average weight of 200gr we...
Background: The development of toxicity tests regarding toxic responses of different fish species could be more effectively used in predictive toxicology and risk assessment. In this study lethal concentrations (LC50-96 h) values of copper sulphate an important toxic industrial pollutant, on Capoeta fusca were determined. Behavioral changes at different concentrations of CuSO4 were determine...
In previous work, retronasal smell was an important cue for perceiving metallic sensations from ferrous sulfate (FeSO4). The purpose of this study was to examine whether FeSO4 produced oral sensations as well as retronasal cues and whether astringency contributed to the oral sensations. In the first study, discrimination of FeSO4 from water was confirmed at concentrations at or above 5 mM witho...
Signals from the vestibular system, area postrema, and forebrain elicit nausea and vomiting, but gastrointestinal (GI) vagal afferent input arguably plays the most prominent role in defense against food poisoning. It is difficult to determine the contribution of GI vagal afferent input on emesis because various agents (e.g., chemotherapy) often act on multiple sensory pathways. Intragastric cop...
The high population growth worldwide causes a demand for food with an increase in the use of different agrochemicals, pesticides and herbicides being primary pollutants anthropogenic origin environment. One critical aims ecotoxicology is evaluation toxic effects mixtures chemical substances that can have additive, synergistics or antagonistics ecosystems. For this reason, research were to: 1) e...
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