In This applicable research, investigating absorption of process ofErythrosine dye on Copper oxide Nano particles Adsorbent was studied. First, prepared dyeconcentrations of 6, 8 and 12 mg L-1 and then effects of parameters such as concentrations ofinitial dye, time and pH on dye absorption efficiency were investigated.The dyeconcentrations in different samples were measured via spectrophotometer (505.6 nm for dyeErythrosine wavelength).The results of absorption studies showed that Erythrosine absorption or removal rateswould increase with decreasing the primary dye concentration, increasing reaction time , anddecreasing pH on the basis of the results, copper oxide Nano particles can the absorbErythrosine dye appropriately and efficiency of the process is higher in acidic pH for dyeErythrosine. The maximum dye removal of 93.68 % could be achieved at initial pH 2 usingadsorbent dosage of 0.233gr in 50 ml (12 mg L-1 dye concentration) and agitation rate of 180rpm. Effect of different parameters as kinetic parameters, were calculated pseudo-First andsecond-order kinetic, the Langmuir and Freundlich models Isotherm for absorb of this dye onadsorbent. this results showed that second-order kinetic adherence possessing regressioncoefficient of R2 ≥ 0.999, absorption or removal of Erythrosine on Copper oxide nanoparticles and different parameters for investigating of process rate of absorption in to be thisexperience. Equilibrium data fitted well with the Langmuir model for dye with adsorbent. پرونده مقاله

In the process of extracting chemical compounds from the extract of Cleome turkmena Bobrov, a flavonoid with a high weight percentage was extracted as pure green crystals. The compound was purified using several chromatographic and recrystallization methods and identified by crystallography and 1H, 13C NMR and it was determined that this flavonoid is Salvigenin with the scientific name 5-hydroxy-4',6,7-trimethoxyflavone. Also, according to the lot of reports about the antibiotic properties of flavonoids, the effect of Salvigenin on inhibiting the growth of several bacteria and fungi was investigated by minimal inhibitory concentration (MIC) and disk diffusion (DD) methods. The best inhibition against Bacillus pumilus with MIC value of 64 µg/ml. In disk diffusion method, best result was recorded against Salmonella typhi. پرونده مقاله

The essential oils isolated from aerial parts of Stachys lavandulifolia by hydrodistillation (HD), and microwave-assisted hydrodistillation (MWHD) techniques, were analyzed by means of GC and GC-MS methods. The oil extracted by MWHD method contained 12 com- pounds with a yield of 0.12% (w/w), representing 77.78% of the total oil. 12 compounds were identified in the volatilesfrom the aerial parts of S. lavandulifolia by HD method comprising 37.9% of the total oil in 0.12% (w/w) yield. The main components of the water distilled oil were found to Phenyl glyoxime (12.84 %), Isopulegone (7.17%), p-Mentha-2,4,(8)-diene (5.67%) while the oil extracted by MWHD method was mainly composed of dihydro indol-4- ol-2-one,5,7-dibromo-3,3-dimethyl(34.03), Benzene, (1-methyl-2-propenyl- 3-ol) (21.52%) and 7-hydroxy-bicyclo [3.3.1] non-2-en-9-one (7.55%).Also the anticlerical activities of the oils were compared by using MIC method. پرونده مقاله

چکیده
مقدمه: پساب های دارویی به دلیل اثراتی که بر سلامت انسان و محیط زیست دارند جزء خطرناک ترین پساب ها محسوب می شوند. هدف از تحقیق حاضر بررسی تخریب نوری آلاینده دارویی سفالکسین از محلولهای آبی با استفاده از نانوساختار فوتوکاتالیست سنتزی بود.
مواد و روش ها: در این تحقیق از یک ترکیب فلز–آلی جدید (Zn-MOC) که از لیگاند سنتزی مزوتتراکیس(4-سیانوفنیل) پورفیرین که به روش سونوشیمیایی (نانوساختار) سنتز شده است، جهت تخریب نوری آلاینده دارویی سفالکسین استفاده شد. کلیه پارامترهای موثر بر راندمان تخریب آلاینده که شامل pH، مدت زمان تابش دهی، مقدار فوتوکاتالیست، غلظت سفالکسین می باشد، با استفاده از روش طراحی مکعب مرکزی (CCD) که یکی از روش های سطح پاسخ (RSM) است مورد بررسی و بهینه سازی قرار گرفت.
یافته‌ها: نانوساختار فوتوکاتالیست سنتزی بر پایه روی (Zn-MOC) کارایی بسیار بالایی ( 20/94درصد) در تخریب داروی سفالکسین در مجاورت نور مرئی از خود نشان داد.
نتیجه‌گیری: فوتوکاتالیست سنتزی استفاده شده در این تحقیق کارایی بالا در زمان کوتاهتر را از خود نشان داد. همچنین مقادیر بهینه پارامتر مؤثر بر فرآیند فوتوتخریب نوری سفالکسین توسط Zn-MOC در شرایط 4=pH، مقدار فوتوکاتالیست 90/0 گرم بر لیتر ، زمان تابش دهی 45 دقیقه و غلظت آلاینده 80/4 میلی گرم بر لیتر مشاهده شد.
واژه‌های کلیدی:
سفالکسین ، روش سطح پاسخ ، Zn-MOC ، فوتوکاتالیست، نانو ساختار پرونده مقاله