نتایج جستجو برای: 1hnmr study
تعداد نتایج: 3968844 فیلتر نتایج به سال:
چکیده سرطان کولورکتال سومین سرطان در مردها و دومین سرطان در زنان در سراسر دنیا می باشد.در ایران میزان مرگ و میر ناشی از این بیماری 8-6 از هر 000/100 نفر می باشد. روش های تشخیص متداول این بیماری بررسی خون مخفی در مدفوع، سنجش تومور مارکر cea و کولونوسکوپی می باشد. دو روش اول غیر اختصاصی است و کولونوسکوپی نیز یک روش تهاجمی می باشد که انجام آن برای بیمار بسیار مشکل است. این بیماری اگر در مراحل او...
Polyurethanes and polyurethane-ureas were prepared by the reaction of diethylene glycol and polyethylene glycol with excess of aromatic and aliphatic diisocyanate to yield isocyanate terminated prepolymers which were subsequently reacted with diols and diamines. These polymers were characterized by IR, 1HNMR spectra, viscosity measurements and thermogravimetric analysis.
cis-polybutadiene was functionalized using in–situ generated dmd as oxidant and tetra-n-butyl ammonium bromide as phase transfer catalyst (ptc). the epoxidation process was investigated by 1hnmr spectroscopy. 1hnmr spectrum analysis of products confirms the absence of ring opening side products in epoxidation reaction. various factors such as reaction temperature, reaction time and the concentr...
Objective(s): Determination of stages of colon cancer is done by biopsy usually after surgery. Metabolomics is the study of all the metabolites using LC-MS and 1HNMR spectroscopy with chemometric techniques. The stages of colon cancer were detected from patients' sera using 1HNMR. Materials and Methods: Five ml blood was collected from 16 confirmed patients referred for colonoscopy. One group ...
Nowadays, the use of lasers and other biospectroscopic techniques such as Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR), Mass, UV-Vis, FT-Raman, 1HNMR, 13CNMR and 31PNMR spectroscopies have had significant progress in treatment of cancer diseases [1-17]. Process of irradiation transmission and absorption in human cells’ tissues is very important in diagnosis an...
dendrimer synthesis strategies now provide virtual control of macromolecular nanostructures as a function of size and surface/interior functionality. these strategies involve the covalent assembly of hierarchical components reactive monomers , branch cells or dendron’s around atomic or molecular cores according to divergent/convergent dendrite branching principles.combinon of two or more dendri...
بزرگترین جنس از تیره فرفیون، euphorbia و یکی از 6 جنس بزرگ گیاهان گلدار با حدود 2100 گونه در جهان و متجاوز از 82 گونه در نقاط مختلف ایران است .جنس euphorbia منبعی غنی از ترکیبات ترپنوئیدی محسوب می شود و گونه ی e. denticulata lam. یکی از گونه های گزارش شده در ایران است. با هدف شناسایی ترکیبات ترپنوئیدی، گونهlam. e. denticulata از مناطق غربی ایران جمع آوری و مطالعه شد. تری ترپن ها و ترکیبات استرو...
N, Nbis(2-chloroethyl)aminobenzoyl picolinoyl hydrazide(BABPH), a benzoic acid nitrogen mustard based new compound and its metal complexes(Cu2+ and Zn2+) have been synthesized and characterized by elemental analysis, IR, 1HNMR, EPR, electronic spectrum, and molar conductivity measurements. In the present study, both BABPH and its complexes exhibited in vitro excellent inhibition of L1210, K562 ...
Four coordinate tetrahedral (Pd0 and Pt0) and square planar (Rh+ and Ir+) complexes of triphenyl phosphine and 1-benzyl tetrazoline-5-thione have been prepared and characterised on the basis of elemental analysis and spectroscopic data (IR, UV-vis, 1HNMR). Bonding of tetrazole ligand occurs through thione tautometric form. Determination of oxidation state of central metal atom in the complexes ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید