نتایج جستجو برای: sbr

تعداد نتایج: 1773  

2009
Lloyd W. Johnson

AAqua-Aerobic Systems (AAS), in partnership with the Colorado School of Mines (CSM), has completed the successful startup of a sequencing batch reactor-membrane bioreactor (SBR-MBR). The package system treats domestic wastewater generated by a 400-apartment, student and faculty housing-complex located on the CSM campus in Golden, CO. This success is rooted in a 15-year development program that ...

ژورنال: :مجله دانشگاه علوم پزشکی کردستان 0
انوشیروان محسنی بندپی anoshirvan mohseni bandpei environmental health dept., faculty of health, shahid beheshti university of medical sciences, tehran, iran.گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی شهید بهشتی، تهران ، ایران ذبیح الله یوسفی zabihollah yousefi environmental health dept., faculty of health, mazandaran university of medical sciences, sari, iran.گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی مازندران، ساری، ایران رمضانعلی دیانتی تیلکی ramazan ali dianati tileki environmental health dept., faculty of health, mazandaran university of medical sciences, sari, iran.گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی مازندران، ساری، ایران افشین ملکی afshin maleki environmental health dept.,environmental health research center, kurdistan university of medical sciences, sanandaj, iran.گروه بهداشت محیط و مرکز تحقیقات بهداشت محیط، دانشگاه علوم پزشکی کردستان، سنندج، ایران اسماعیل قهرمانی esmail ghahremani environmental health dept.,environmental health research center, kurdistan university of medical sciences, sanandaj, iran. (corresponding author)گروه بهداشت محیط و مرکز تحقیقات بهداشت محیط، دانشگاه علوم پزشکی کردستان، سنندج، ایران. (مولف مسوول) پگاه بهمنی pegah bahmani expert responsible for the research and productivity of rural water and wastewater company in kurdistan, sanandaj, iranکارشناس مسوول تحقیقات و بهره وری شرکت آب و فاضلاب روستایی استان کردستان، سنندج، ایران

زمینه و هدف: روزانه میلیون ها لیتر از پساب های رنگی توسط صنایع نساجی و کارخانه ها تولید می شود؛ هر لیتر از این پساب ها می تواند حاوی بیش از 20 گرم از رنگدانه ها و حد واسط هایی ناشی از تجزیه آن ها باشد که باعث بروز مسائل زیست محیطی می شوند. رنگ های شیمیایی که در این صنایع به کار می رود؛ دارای خطرات بالقوه ای از جمله سرطان زایی و جهش زایی برای انسان می باشند. به علاوه نفوذ رنگ های متفاوت به آب ها...

ژورنال: :نشریه مهندسی عمران و محیط زیست دانشگاه تبریز 2015
سمانه پاشا زانوسی بیتا آیتی حسین گنجی دوست

در تصفیه­خانه­های فاضلاب حجم زیادی لجن مازاد بیولوژیکی تولید می­شود که هزینه فرایند تصفیه و دفع آن تقریباً نیمی از کل هزینه بهره­برداری را شامل می­شود. در این تحقیق، سعی بر آن بود تا به کمک امواج اولتراسونیک میزان حجم و جرم لجن کاهش داده شود. در بخش اول، سه مجموعه لجن با درصد جامدات کل 5/0، 1 و 2 در معرض امواج اولتراسونیک تحت فرکانس 20 کیلوهرتز و دامنه­های 6، 8 و10 میکرومتر در زمان­های 0، 120، 1...

2005
Sebastià Puig Lluís Corominas Joan Colomer Maria D. Balaguer Jesús Colprim

This paper focuses on the on-line Oxygen Uptake Rate (OUR) as a new tool for identifying the state of the plant during the aerobic phases of the SBR cycle and as a control parameter to optimize the SBR process. A real-time control system has been designed to adjust the aerobic phases length using on-line OUR as the endpoint of the aerobic phase. The control system implementation has permitted t...

2001
Dan Ariely George Loewenstein Drazen Prelec Shane Frederick John Lynch

*We thank Shane Frederick, John Lynch, Jim Bettman, and Birger Wernerfelt for helpful comments and suggestions. We are also grateful for financial support to Ariely and Prelec from the Sloan School of Management, and to Loewenstein from the Integrated Study of the Human Dimensions of Global Change at Carnegie Mellon University (NSF grant # SBR-9521914). This work started while the authors were ...

Journal: :Applied optics 2002
Ravil R Agishev Adolfo Comeron

Results of lidar modeling based on spatial-angular filtering efficiency criteria are presented. Their analysis shows that the low spatial-angular filtering efficiency of traditional visible and near-infrared systems is an important cause of low signal/background-radiation ratio (SBR) at the photodetector input The low SBR may be responsible for considerable measurement errors and ensuing the lo...

2008
Jens Grubert M. Sheelagh T. Carpendale Tobias Isenberg

We explore the use of hand postures to interact with stroke-based rendering (SBR) on touch-sensitive large displays. In contrast to traditional WIMP interfaces, we allow people to directly engage with and influence a rendering. Our system allows the creation of new stroke primitives as well as provides mechanisms to distribute and then manipulate them on the canvas. We offer a set of natural ma...

2018
M. Glavas

The rate of aquation of [Co(NH3)s (DMSO)] Bra was measured in solutions containing the surfactant cetyltrimethylammonium bromide (CTAB) over the concentration range 9.55 x 10-4 mol dm-3 to 0.450 mol dm-3• This large change in CTAB concentration affected the rate very little and no significant amounts of Co(NH3)sBr+ were formed .. It was concluded that, if Brcounterions were concentrated in the ...

Journal: :Polymer Testing 2021

The effect of the SBR/BR blend ratio on marching modulus – no-plateau torque profile in vulcametry a silica filled tire tread compound is investigated. This tedious recurring problem, as it precludes establishment optimal vulcanization conditions. It was expected that elastomer characteristics, SBR and BR this study, their physical affinity towards will influence degree dispersion flocculation,...

Journal: :Egyptian Journal of Chemistry 2021

Modifying asphalt binder with styrene butadiene rubber (SBR) improves low temperature performance (resistance to cracking), elastic recovery, and ductility of binder. However, some difficulties were found at high temperatures susceptibility (Rutting), storage stability (compatibility). Therefore, the aim this study is resolve these defects (rutting compatibility) by formulating SBR/ waste nanoc...

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