نتایج جستجو برای: نانو زئولیت naa
تعداد نتایج: 18897 فیلتر نتایج به سال:
Undertaking transplantation in highly sensitized African American (AA) patients as transplant recipients represents a unique challenge. We retrospectively compared the outcomes of AA with non-African American (NAA) patients who had panel reactive antibody >80% and received deceased donor (DD) kidneys by virtual crossmatch. Immunosuppressive regimen included basiliximab induction and tacrolimus,...
BACKGROUND DATA There is a considerable difference in pain perception among individuals. In patients with chronic pain, recent studies using fMRI, PET and SPECT have shown that functional changes mainly occurred in the anterior cingulate cortex (ACC), prefrontal cortex (PFC) and thalamus. Brain magnetic resonance spectroscopy (MRS) can evaluate brain chemistry by measuring metabolites such as N...
یکی از مهم¬ترین روش¬هایی که اخیراً برای جداسازی گازها مورد استفاده قرار می ¬گیرد جذب سطحی است. مهم¬ترین مسئله در این فرآیند، انتخاب جاذب مناسبی است که دارای بالاترین میزان انتخاب¬پذیری باشد. هدف از این تحقیق سنتز جاذب مناسب برای خالص¬سازی گاز طبیعی از co2 است، علاوه بر ظرفیت جذب مناسب دارای انتخاب¬پذیری بالا نیز برای این گاز باشد. در این راستا تحقیق حاضر در سه بخش متفاوت انجام شد. در مرحله اول ع...
زئولیت موردنیت یکی از زئولیتهای با سیلیکای بالاست که با ژلی با نسبتهای مولی متفاوت از واکنشگرهای اولیه در شرایط متفاوت قابل سنتز است. این زئولیت به دلیل پایداری حرارتی و اسیدیته بالا و تخلخل زیاد به عنوان جاذب گزینشگر و در شکل اسیدی به عنوان کاتالیست جامد به طور وسیع در صنایع نفت و پتروشیمی استفاده میشود. بلورهای موردنیت با اندازههای در گستره 93 تا 77 نانومتر در غیاب جهت دهنده ساختار (ال...
PURPOSE Although many previous studies have attempted to identify differences between atopic asthma (AA) and non-atopic asthma (NAA), they have mainly focused on the difference of each variable of lung function and airway inflammation. The aim of this study was to evaluate relationships between lung function, bronchial hyperresponsiveness (BHR), and the exhaled nitric oxide (eNO) levels in chil...
BACKGROUND AND PURPOSE The most abundant metabolite visible by proton magnetic resonance spectroscopy (MRS) in human brain is N-acetylaspartate (NAA), which is often used as a marker of viable neurons. NAA is anecdotally reported to be elevated in children with sickle cell disease (SCD), even though patients can have brain injury or atrophy. We measured NAA levels rigorously in SCD patients to ...
Neuroblastoma is the most commonly extra-cranial solid tumor of childhood frequently diagnosed. The nervous system-specific metabolite N-acetylaspartate (NAA) is synthesized from aspartate and acetyl-CoA in neurons, it is among the most abundant metabolites present in the central nervous system (CNS) and appears to be involved in many CNS disorders. The functional significance of the high NAA c...
To characterize the molecular mechanisms of N-acetylaspartate (NAA) metabolism following traumatic brain injury (TBI), we measured the NAA, adenosine triphosphate (ATP) and adenosine diphosphate (ADP) concentrations and calculated the ATP/ADP ratio at different times from impact, concomitantly evaluating the gene and protein expressions controlling NAA homeostasis (the NAA synthesizing and degr...
To compare metabolite ratios in the posterior cingulate with the Mini-Mental State Examination (MMSE) test scores in patients with mild or moderate Alzheimer disease and in controls. Methods: We evaluated 29 patients with mild or moderate Alzheimer disease and 15 controls by proton spectroscopy with the voxel located in the posterior cingulate. The MMSE was applied to all patients and controls....
BACKGROUND AND PURPOSE We investigated serial metabolic changes in frontal lobes of patients with deep intracerebral hemorrhage (ICH) to examine the correlation between N-acetylaspartate (NAA) and degree of motor impairment or clinical outcome. METHODS - Twenty patients with deep ICH were examined with proton magnetic resonance spectroscopy with the application of a multivoxel method (1 voxel...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید