نتایج جستجو برای: t nom
تعداد نتایج: 705309 فیلتر نتایج به سال:
This study aimed to evaluate the expression of AKT and phosphorylated AKT (p-Akt) in human ameloblastoma (AB). Immunohistochemistry showed human AB was positive for Akt and Akt expression was mainly found in the cytoplasm of epithelial cells. The Akt expression in AB was significantly higher than that in normal oral mucosa (NOM), but still lower than that in oral squamous cell carcinoma (OSCC)....
Natural organic matter (NOM) is a complex mixture of organic compounds present in all fresh water. NOM is usually only roughly characterised through conventional analytical techniques. In this study, advanced analytical techniques such as XAD fractionation, LCOCD, EEM fluorescence and membrane separation have been applied for NOM seawater characterization. Conventional analyses have shown that ...
در سالهای اخیر بهینهسازی فرآیند انعقاد به منظور حذف هر چه بیشتر مواد آلی طبیعی (NOM) و در نتیجه برآوردهسازی الزامات انعقاد تشدید یافته از اهمیت قابل ملاحظهای برخوردار بوده است. NOM متشکل از دو بخش ذرهای و محلول میباشد که معمولاً بخش محلول آن سهم عمدهای از تلاش جهت حذف را به خود اختصاص میدهد. حذف مواد آلی طبیعی محلول از آبهای با کدورت پایین به شرطی که توجه کافی در تشکیل لختههای میکرونی (...
Two coagulants, aluminum sulfate and ferric chloride, were tested to reduce natural organic matter (NOM) as a pretreatment prior to polyvinylidene fluoride (PVDF) microfiltration (MF) membranes for potable water treatment. The results showed that the two coagulants exhibited different treatment performance in NOM removal. Molecular weight (MW) distributions of NOM in the tested surface raw wate...
OBJECTIVES In this study, we investigated the influence of ionic strength and natural organic matter (NOM) on aggregation and soil adsorption of citrate-coated silver nanoparticles (AgNPs). METHODS Time-resolved dynamic light scattering measurements and batch adsorption experiments were used to study their aggregation and soil adsorption behaviors, respectively. RESULTS The aggregation rate...
This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12–78 km2, in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, X...
Photoinduced reduction of silver ion (Ag(+)) to silver nanoparticles (AgNPs) by dissolved organic matter (DOM) plays a crucial role in the transformation and transport of engineered AgNPs and Ag(+) in aquatic environments. DOM is a mixture of natural polymers with wide molecular weight (MW) distribution, and the roles of specific components of DOM in the photoreduction of Ag(+) to AgNPs are sti...
INTRODUCTION Appendectomy has long been the mainstay of intervention for acute appendicitis, aiming at preventing perforation, peritonitis, abscess formation and recurrence. With better understanding of the disease process, non-operative management (NOM) with antibiotics alone has been proved a feasible treatment for uncomplicated appendicitis. This article aimed at systematically reviewing the...
BACKGROUND Gluteal muscle contracture (GMC) is a clinical syndrome due to multiple etiologies in which hip movements may be severely limited. The aim of this study was to propose a detailed classification of GMC and evaluate the statistical association between outcomes of different management and patient conditions. METHODS One hundred fifty-eight patients, who were treated between January 19...
The generation of disinfection by-products during water treatment can be controlled by reducing the levels of precursor species prior to the chlorination step. The Natural Organic Matter (NOM) is the principal organic precursor and conventional removal of pollutants such as coagulation, flocculation and filtration do not guarantee the total NOM removal. In this study the degradation of NOM mode...
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