نتایج جستجو برای: ph 1869 and l 4 cm

تعداد نتایج: 17158910  

بیرامی, سمیه, دادبان شهامت, یوسف, رحمانی, علیرضا, رحیم زاده برزکی, هادی,

Background and purpose: 2, 4 dinitrophenol is the most important nitrophenol compound that is widely used in paints, adhesives, wood preservatives, solvents, pesticides, and explosive materials. Because of the high toxicity and non-biodegradability of 2, 4 DNP, must be prevented from entering the water body. The aim of this study was to evaluate the performance of ordered mesoporous carbon CMK-...

Journal: :Inorganic chemistry 2001
H Miyasaka R Clérac C S Campos-Fernández K R Dunbar

The new metal-metal bonded diruthenium(II,III) compounds [Ru2(O2CCH3)4(mu-L)]infinity (L = N(CN)2-, 1; C(CN)3-, 2) and [[Ru2(O2CCH3)2(mhp)2]2(mu-DM-Dicyd)] (3) (mhp = 2-oxy-6-methylpyridinate, DM-Dicyd = 1,4-dicyanamido-2,5-dimethylbenzene dianion) have been synthesized and fully characterized. Compounds 1 and 2 were synthesized by the reaction of [Ru2(O2CCH3)4(NCCH3)2](BF4) with NaN(CN)2 and K...

In this study, Chemical Oxygen Demand (COD) from a pharmaceutical wastewater (PhW) was reduced by several techniques such as electro-Fenton (EF), photo electro-Fenton (PEF) and activated sludge (AS) processes and the obtained data were compared with each other. The effects of several parameters such as pH, current density, H2O2/Fe2+ molar ratio, volume ratio of ...

Journal: :مجله بهداشت محیط و توسعه پایدار 0
majid farhadi 1msc,environmental health engineering, school of health, ahvaz jundishapur university of medical sciences, ahvaz, iran afshin takdastan associate prof. environmental technologies research center , ahvaz jundishapur university of medical sciences, ahvaz, iran roghayeh baghbany msc, school of health, ahvaz jundishapur university of medical sciences, ahvaz, iran

introduction: colloidal materials and suspended solids cause turbidity in water. to remove turbidity, clarification method is used that includes processes of coagulation, flocculation, and sedimentation. due to the long duration of coagulation process, coagulant aids are applied. despite the favorable efficiency of synthetic polyelectrolytes as a coagulant aid, due to their harmful effects on h...

Journal: :Journal of animal science 1997
J McCaw M Ellis M S Brewer F K McKeith

Pigs (n = 18) were selected to represent three different muscle conditions (six pigs per condition): normal: dark, firm, and dry; and halothane carrier. A 45-cm-long longissimus section was excised from each side of the carcass at 30 min postmortem and cut into six sections. Right side sections were assigned to the intermediate temperature incubation (23 degrees C), and left side sections were ...

Journal: :journal of ornamental plants 2015
s. ansari e. hadavi m. salehi p. moradi

gerbera one of 10 important cut flowers in the world and iran. one of the most problems is low-life after harvest and neck bending. producers want to increase longevity of these flowers with using chemical solutions. with the aim of achieving the best chemical treatments to increase flower vase life gerbera goodtimming, nano silver (5 mg l-1), humic acid (50 mg l-1), gibberellic acid (2.5 mg l-...

ملکوتیان, محمد, نبویان, محمدرضا ,

Background and Objective: Methylene blue (MB) is one of the cationic dyes whose presence in textile industries wastewater can be hazardous for ecological systems as well as general health due to aromatic features. The present study aimed to investigate the effectiveness of electrocoagulation (EC) and electro-fenton (EF) processes at decoloration of MB dye from aqueous solutions using iron elect...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده علوم 1393

در این کار لیگاند بازشیف سه دندانه 1-((?- کلرو-2-هیدروکسی فنیل ایمینو) متیل) نفتالن-2-ال [h2l] از واکنش تراکمی 2-آمینو-4-کلروفنول و 2-هیدروکسی نفتالدهید سنتز شد. کمپلکس های وانادیوم(v) شامل [nh(ch2ch3)3][vo2(l)] ، [vo(l)(oc3h7)] و [vo(l)(oc4h9)] از لیگاند ذکر شده در محیط های حلال متفاوت تهیه و با روشهای متداول طیف سنجی مادون قرمز ، رزونانس مغناطیسی هسته و طیف الکترونی بررسی و شناسایی شدند. همچن...

2012
M. F. A. Mollah M. Moniruzzaman M. M. Rahman

The present study was conducted over 4 months during 1 September to 30 December 2005 to observe the effects of stocking density on growth and survival of Thai Sharpunti, Barbodes gonionotus in 3 earthen ponds of size of 2.8 decimal each. The stocking densities of 80, 100 and 120 fish/decimal were treated as T1, T2 and T3, respectively. All the treatments were subjected to the same feeding regim...

Journal: :Investigative ophthalmology & visual science 1994
C Giasson J A Bonanno

PURPOSE Based on contact lens-induced stromal acidification of the cornea, it has been suggested that the corneal epithelial and endothelial cells also become acidotic during contact lens wear. This alleged acidification may have a role in altered cell appearance and metabolism during contact lens wear. This study investigated the effects of anoxia, carbon dioxide retention, and contact lens ga...

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