نتایج جستجو برای: absorbent compared to 05 percent

تعداد نتایج: 10710528  

ژورنال: طلوع بهداشت یزد 2015
سبحان اردکانی, سهیل, صحرایی, رضا, فیلی دانبرانی, زهرا,

Introduction: Vanadium and its compounds are regarded as important environmental pollutants. Due to its damaging effects on human health as well as environmental health, development of new methods for its removal based on new technologies is of extraordinary importance. Therefore, this study aimed to investigate the efficiency of vanadium removal from the effluent collected in the separator tan...

2010
S. L. Barnes J. C. Gore T. E. Yankeelov

Table 1. Standard model optimized parameters and percent error over range of D values. Model values: K =1.0, ve=0.5 D K Error ve Error 0 1.004 0.4% 0.500 0.0% 1.0E-05 1.001 0.1% 0.502 0.4% 2.5E-05 0.997 -0.3% 0.504 0.9% 5.0E-05 0.989 -1.1% 0.509 1.8% 1.0E-04 0.974 -2.6% 0.517 3.4% 2.5E-04 0.929 -7.0% 0.540 8.1% 5.0E-04 0.859 -14.1% 0.574 14.9% 1.0E-03 0.732 -26.9% 0.631 26.2% 2.5E-03 0.500 -50....

Background & Aims of the Study: Nitrogenous compounds could directly create many problems for human's health and the environment. Thus, removal of nitrogenous compounds is necessary. Among the most important problems, decreasing dissolved oxygen, toxicity for aquatics, eutrophication, converting aerobic medium into anaerobic one and corrosion could be noted. The aim of this stu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Journal: :The journal of extra-corporeal technology 2012
Joseph J Sistino Heather Shaw Bonilha

The purpose of this study was to analyze the changes over the past two decades in hospital survival and neurodevelopmental outcomes after surgical treatment for hypoplastic left heart syndrome. The hypothesis for this study is that increasing hospital survival following the Stage I Norwood (S1N) procedure is associated with improvements in neurodevelopmental outcomes. Studies included in the me...

2007
Prachi Singh Geert F. Versteeg

A study to determine the structure and activity relationships of various amine based CO2 absorbents was performed in which, the desorption of CO2 from saturated absorbent at 80 C and atmospheric pressure was measured to assess the initial desorption rate and desorption capacities at pseudo equilibrium. Evaluation of desorption capacity at 80 C will give a better understanding for more energy ef...

Journal: :Journal of endodontics 2011
Luca Testarelli Gianluca Plotino Dina Al-Sudani Valentina Vincenzi Alessio Giansiracusa Nicola M Grande Gianluca Gambarini

INTRODUCTION The aim of the present study was to evaluate the bending properties of Hyflex instruments, which exhibit a lower percent in weight of nickel (52 Ni %wt) and compare them with other commercially available nickel-titanium (NiTi) rotary instruments. METHODS Ten instruments with tip size 25, 0.06 taper of each of the following NiTi rotary instrumentation techniques were selected for ...

2006
Alan H. Menkis Peter W Pflugfelder

To reduce perioperative hemorrhage following heart-lung transplantation, several technical modifications were introduced in June 1988 to secure better posterior mediastinal hemostasis. The intraoperative and postoperative use of blood and blood products, as well as the chest tube drainage in the first 24 hours postoperatively, were compared in the seven patients operated on since June 1988 with...

Journal: :archives of hygiene sciences 0
حاتم hatam godini department of environmental health engineering, health school, alborz university of medical sciences, karaj, iran. abdollah dargahi department of environmental health engineering, health school, hamadan university of medical sciences, hamadan, iran. mitra mohammadi department of environmental health engineering, health school, kermanshah university of medical sciences, kermanshah, iran. ghodratollah shams khorramabadi department of environmental health engineering, health school, lorestan university of medical sciences, khorramabad, iran. ali azizi department of community medicine, medical school, kermanshah university of medical science, kermanshah, iran. leila tabande department of environmental health engineering, health school, kermanshah university of medical sciences, kermanshah, iran.

background & aims of the study: nitrogenous compounds could directly create many problems for human's health and the environment. thus, removal of nitrogenous compounds is necessary. among the most important problems, decreasing dissolved oxygen, toxicity for aquatics, eutrophication, converting aerobic medium into anaerobic one and corrosion could be noted. the aim of this study was deter...

Journal: :Journal of dental education 2008
Thomas J Prihoda R Neal Pinckard C Alex McMahan John H Littlefield Anne Cale Jones

A standard correction for random guessing on multiple-choice examinations was implemented prospectively in an Oral and Maxillofacial Pathology course for second-year dental students. The correction was a weighted scoring formula for points awarded for correct answers, incorrect answers, and unanswered questions such that the expected gain in the multiple-choice examination score due to random g...

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