Two distemper paint samples taken from decorative boards in Uvdal stave church, Norway, were anal... more Two distemper paint samples taken from decorative boards in Uvdal stave church, Norway, were analysed using palaeoproteomics, with an aim of identifying their binder and possible contaminants. The results point at the use of calfskin to produce hide glue as the original paint binder, and are consistent with the instructions of binder production and resource allocation in the historical records of Norway. Although we did not observe any evidence of prior restoration treatments using protein-based materials, we found abundant traces of human saliva proteins, as well as a few oats and barley peptides, likely deposited together on the boards during their discovery in the 1970s. This work illustrates the need to fully consider contamination sources in palaeoproteomics and to inform those working with such objects about the potential for their contamination.
This paper addresses the application of infrared spectroscopy in combination with chemometrics to... more This paper addresses the application of infrared spectroscopy in combination with chemometrics to identify wall painting's binding medium while employing pattern recognition techniques to process FTIR data-set of complex samples. In this regard, based on the historical documents and previous researches, firstly 56 standard samples were prepared to represent strata of Persian wall paintings in the Safavid period in addition to real historic samples from the case study; Sukias mansion. Then, each sample was analysed by the means of FTIR and chemometrics. Finally, SIMCA was applied to the whole region of studied IR spectra which predicted egg yolk as the binding medium of Sukias mansion samples.
This paper addresses the application of infrared spectroscopy in
combination with chemometrics to... more This paper addresses the application of infrared spectroscopy in combination with chemometrics to identify wall painting’s binding medium while employing pattern recognition techniques to process FTIR data-set of complex samples. In this regard, based on the historical documents and previous researches, firstly 56 standard samples were prepared to represent strata of Persian wall paintings in the Safavid period in addition to real historic samples from the case study; Sukias mansion. Then, each sample was analysed by the means of FTIR and chemometrics. Finally, SIMCA was applied to the whole region of studied IR spectra which predicted egg yolk as the binding medium of Sukias mansion samples.
خانه ي تاريخي سوكياس، در محله ي تبريزيهاي اصفهان واقع شده و بر طبق مطالعات انجام شده در دوره ي شا... more خانه ي تاريخي سوكياس، در محله ي تبريزيهاي اصفهان واقع شده و بر طبق مطالعات انجام شده در دوره ي شاه عباس دوم صفوي ساخته شده است . يكي از مهم ترين تزيينات معماري اين بنا، ديوارنگاره هاي تاريخي آن است . لايه رنگ در ديوارنگاره به طور معمول شامل دو جزء رنگدانه، بست و ساير افزودني ها است . شناسايي بست با استفاده از طيف بيني زير قرمز از آن جهت كه مقدار بست ناچيز است و داده هاي طيفي مرتبط با آن، هنگام آناليز تحت تأثير هم پوشاني ناشي از وجود رنگدانه ها و ديگر اجزاء لايه هاي ديوارنگاره واقع مي شود، كاري دشوار است . از اين رو در اين پژوهش با هدف حذف اثر اين عوامل مداخله گر تعداد ي نمونه ساخته شد و از ديوارنگاره خانه ي تاريخي سوكياس نمونه برداري شد . طيف نمونه ها با استفاده شد . زرده ي تخم مرغ به عنوان بست نمونه هاي SIMCA تهيه و براي پردازش داده ها نيز از تكنيك كمومتريكس FTIR استفاده از روش تاريخي خانه ي سوكياس شناسايي شد . با توجه به نتايج به دست آمده، مي توان استفاده از روشهاي كمومتريكس را در شناسايي بست نقاشي هاي ديواري كارآمد دانست.
Two distemper paint samples taken from decorative boards in Uvdal stave church, Norway, were anal... more Two distemper paint samples taken from decorative boards in Uvdal stave church, Norway, were analysed using palaeoproteomics, with an aim of identifying their binder and possible contaminants. The results point at the use of calfskin to produce hide glue as the original paint binder, and are consistent with the instructions of binder production and resource allocation in the historical records of Norway. Although we did not observe any evidence of prior restoration treatments using protein-based materials, we found abundant traces of human saliva proteins, as well as a few oats and barley peptides, likely deposited together on the boards during their discovery in the 1970s. This work illustrates the need to fully consider contamination sources in palaeoproteomics and to inform those working with such objects about the potential for their contamination.
This paper addresses the application of infrared spectroscopy in combination with chemometrics to... more This paper addresses the application of infrared spectroscopy in combination with chemometrics to identify wall painting's binding medium while employing pattern recognition techniques to process FTIR data-set of complex samples. In this regard, based on the historical documents and previous researches, firstly 56 standard samples were prepared to represent strata of Persian wall paintings in the Safavid period in addition to real historic samples from the case study; Sukias mansion. Then, each sample was analysed by the means of FTIR and chemometrics. Finally, SIMCA was applied to the whole region of studied IR spectra which predicted egg yolk as the binding medium of Sukias mansion samples.
This paper addresses the application of infrared spectroscopy in
combination with chemometrics to... more This paper addresses the application of infrared spectroscopy in combination with chemometrics to identify wall painting’s binding medium while employing pattern recognition techniques to process FTIR data-set of complex samples. In this regard, based on the historical documents and previous researches, firstly 56 standard samples were prepared to represent strata of Persian wall paintings in the Safavid period in addition to real historic samples from the case study; Sukias mansion. Then, each sample was analysed by the means of FTIR and chemometrics. Finally, SIMCA was applied to the whole region of studied IR spectra which predicted egg yolk as the binding medium of Sukias mansion samples.
خانه ي تاريخي سوكياس، در محله ي تبريزيهاي اصفهان واقع شده و بر طبق مطالعات انجام شده در دوره ي شا... more خانه ي تاريخي سوكياس، در محله ي تبريزيهاي اصفهان واقع شده و بر طبق مطالعات انجام شده در دوره ي شاه عباس دوم صفوي ساخته شده است . يكي از مهم ترين تزيينات معماري اين بنا، ديوارنگاره هاي تاريخي آن است . لايه رنگ در ديوارنگاره به طور معمول شامل دو جزء رنگدانه، بست و ساير افزودني ها است . شناسايي بست با استفاده از طيف بيني زير قرمز از آن جهت كه مقدار بست ناچيز است و داده هاي طيفي مرتبط با آن، هنگام آناليز تحت تأثير هم پوشاني ناشي از وجود رنگدانه ها و ديگر اجزاء لايه هاي ديوارنگاره واقع مي شود، كاري دشوار است . از اين رو در اين پژوهش با هدف حذف اثر اين عوامل مداخله گر تعداد ي نمونه ساخته شد و از ديوارنگاره خانه ي تاريخي سوكياس نمونه برداري شد . طيف نمونه ها با استفاده شد . زرده ي تخم مرغ به عنوان بست نمونه هاي SIMCA تهيه و براي پردازش داده ها نيز از تكنيك كمومتريكس FTIR استفاده از روش تاريخي خانه ي سوكياس شناسايي شد . با توجه به نتايج به دست آمده، مي توان استفاده از روشهاي كمومتريكس را در شناسايي بست نقاشي هاي ديواري كارآمد دانست.
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Papers by Zahra Haghighi
combination with chemometrics to identify wall painting’s binding
medium while employing pattern recognition techniques to process
FTIR data-set of complex samples. In this regard, based on the
historical documents and previous researches, firstly 56 standard
samples were prepared to represent strata of Persian wall paintings
in the Safavid period in addition to real historic samples from the
case study; Sukias mansion. Then, each sample was analysed by
the means of FTIR and chemometrics. Finally, SIMCA was applied to
the whole region of studied IR spectra which predicted egg yolk as
the binding medium of Sukias mansion samples.
combination with chemometrics to identify wall painting’s binding
medium while employing pattern recognition techniques to process
FTIR data-set of complex samples. In this regard, based on the
historical documents and previous researches, firstly 56 standard
samples were prepared to represent strata of Persian wall paintings
in the Safavid period in addition to real historic samples from the
case study; Sukias mansion. Then, each sample was analysed by
the means of FTIR and chemometrics. Finally, SIMCA was applied to
the whole region of studied IR spectra which predicted egg yolk as
the binding medium of Sukias mansion samples.