Sanja Podunavac-Kuzmаnоvić, Lidiја Јеvrić, Strаhinjа Kоvаčеvić, Bilјаnа Маrоšаnоvić, Маја Lојоvić
The isotope ratio mass spectrometry (IRMS) was used to determine the value of the stable isotope carbon (13C/12C), hydrogen (2H/1H) and oxygen (18O/16O) in the molecule of ethanol, produced by alcoholic fermentation of fresh fruit (apples, pears, plums and grapes) from the Republic of Serbia and Macedonia, with and without the addition of sugar from sugar beet. IRMS analysis of alcohols with known botanical and geographical origins enabled the creation of authentic database for Serbian and Macedonian brandy. Regression analysis has been shown as very effective in prediction of the amount of added sugar beet in fruit brandy based on δD values. Statistical data analysis was performed by comparing stable isotope values for different types of brandies. 18O/16O ratio values proved to be very useful in determination of the geographical origin.
{"title":"CHEMOMETRIC APPROACH TO DETERMINATION OF THE AUTHENTICITY OF DIFFERENT TYPES OF SERBIAN AND MACEDONIAN BRANDY","authors":"Sanja Podunavac-Kuzmаnоvić, Lidiја Јеvrić, Strаhinjа Kоvаčеvić, Bilјаnа Маrоšаnоvić, Маја Lојоvić","doi":"10.7251/GHTE1511011K","DOIUrl":"https://doi.org/10.7251/GHTE1511011K","url":null,"abstract":"The isotope ratio mass spectrometry (IRMS) was used to determine the value of the stable isotope carbon (13C/12C), hydrogen (2H/1H) and oxygen (18O/16O) in the molecule of ethanol, produced by alcoholic fermentation of fresh fruit (apples, pears, plums and grapes) from the Republic of Serbia and Macedonia, with and without the addition of sugar from sugar beet. IRMS analysis of alcohols with known botanical and geographical origins enabled the creation of authentic database for Serbian and Macedonian brandy. Regression analysis has been shown as very effective in prediction of the amount of added sugar beet in fruit brandy based on δD values. Statistical data analysis was performed by comparing stable isotope values for different types of brandies. 18O/16O ratio values proved to be very useful in determination of the geographical origin.","PeriodicalId":424249,"journal":{"name":"GLASNIK HEMIČARA, TEHNOLOGA I EKOLOGA REPUBLIKE SRPSKE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115871988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mladen Stančić, N. Kašiković, Branka Ružičić, D. Novaković, D. Grujić, Rastko Milošević
Tekstilni materijali tokom upotrebe bivaju izloženi različitim spoljašnjim uticajima. Jedan od češćih uticaja kojem su ovi materijali izloženi je toplotno dejstvo. Toplota na tekstilnom materijalu izaziva promjenu strukturnih karakteristika vlakana, čime dolazi i do promjene reprodukovanih otisaka. Cilj ovog rada je da ispita uticaj toplotnog dejstva na kvalitet sito štampanih tekstilnih materijala. Istraživanje je obuhvatilo i analizu zavisnosti kvaliteta štampe od karakteristika štampane podloge, te karakteristika korištene štamparske forme. Eksperimentalni rezultati analiziranih otisaka prije i nakon toplotnog dejstva, dobijeni spektrofotometrijskom analizom reprodukovanih boja kao i digitalnom obradom slike, ukazuju da toplotno dejstvo utiče na kvalitet reprodukovanih otisaka. Rezultati istraživanja su potvrdili i zavisnost kvaliteta reprodukcije od karakteristika materijala na kojem se vrši proces štampe, kao i od karakteristika štamparske forme pomoću koje se vrši proces štampe.
Tekstilni materijali tokom upototrebotrebbe bivaju izloženi različitim spoljašnjim uticajima.这些材料受到的主要影响之一就是热效应。Toplota na tekstilnom materijalu izaziva promjenu strukturnih karakteristika fibana, čime dolazi i do promjene reprodukovanih otisaka.本文旨在描述热效应对丝网印刷纺织材料质量的影响。Eksperimentalni výsledky analizirani otisaka prije i nakon toplotnog dejstva, dobijeni spektrofotriometerjom analizom reprodukovanih boja kao i digitnom obradom slike, ukazuju da toplotno dejstvo utiče na qualitet reprodukovanih otisaka.我们的研究结果将有助于提高材料和工艺的复制质量，以及提高工艺的复制质量。
{"title":"UTICAJ TOPLOTNOG DEJSTVA I KARAKTERISTIKA SITA NA KVALITET OTISAKA DOBIJENIH CRNOM BOJOM NA TEKSTILNIM MATERIJALIMA","authors":"Mladen Stančić, N. Kašiković, Branka Ružičić, D. Novaković, D. Grujić, Rastko Milošević","doi":"10.7251/ghte1511049s","DOIUrl":"https://doi.org/10.7251/ghte1511049s","url":null,"abstract":"Tekstilni materijali tokom upotrebe bivaju izloženi različitim spoljašnjim uticajima. Jedan od češćih uticaja kojem su ovi materijali izloženi je toplotno dejstvo. Toplota na tekstilnom materijalu izaziva promjenu strukturnih karakteristika vlakana, čime dolazi i do promjene reprodukovanih otisaka. Cilj ovog rada je da ispita uticaj toplotnog dejstva na kvalitet sito štampanih tekstilnih materijala. Istraživanje je obuhvatilo i analizu zavisnosti kvaliteta štampe od karakteristika štampane podloge, te karakteristika korištene štamparske forme. Eksperimentalni rezultati analiziranih otisaka prije i nakon toplotnog dejstva, dobijeni spektrofotometrijskom analizom reprodukovanih boja kao i digitalnom obradom slike, ukazuju da toplotno dejstvo utiče na kvalitet reprodukovanih otisaka. Rezultati istraživanja su potvrdili i zavisnost kvaliteta reprodukcije od karakteristika materijala na kojem se vrši proces štampe, kao i od karakteristika štamparske forme pomoću koje se vrši proces štampe.","PeriodicalId":424249,"journal":{"name":"GLASNIK HEMIČARA, TEHNOLOGA I EKOLOGA REPUBLIKE SRPSKE","volume":"437 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132915691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ž. Pavlović, S. Dedijer, Magdolna Pál, Ivana Tomić, I. Jurič
QR (Quick Response) code is a two-dimensional code consisting of white and black squares as information carriers.The main advantages of a two-dimensional or matrix code is the possibility of various and extensive content in thegiven area, wherein the amount of encoded data is limited to about 7000 numbers and about 1800 symbols. Theabove-mentioned codes have become an inevitable part of any industrial product. The aim of this experiment was totest readability of different QR codes printed with screen printing with different mesh tread densities (140 threads/cmand 180 threads/cm). The QR codes were prepared in six different dimensions (1 cm2, 1.3 cm2, 1.6 cm2, 1.9 cm2, 2.2cm2 and 2.5 cm2) with three different types of content (textual message-SMS with 160 characters, short URL and longURL) on seven different substrates (paper 170g/m2, self-adhesive paper, PVC foil, white and yellow cotton cloth/fabric,aluminium sheet and glass plate). During the experiment D65 light source was used as a simulation of daylight. Wehave used Neo Reader software for QR code reading on HTC Desire phone, using the 5-megapixel camera andpossibility of autofocus. The results show improved readability with QR codes printed with screen mesh of 140threads/cm and with the reduction of carried information, i.e. the number of characters that QR codes consist of. Also,the problem with readability decreases when using substrates such as aluminium sheet or glass plate.
QR (Quick Response)码是一种由黑白方块组成的二维码，作为信息载体。二维码或矩阵码的主要优点是在给定区域内可以包含多种广泛的内容，其中编码数据的数量被限制在约7000个数字和约1800个符号。上述规范已成为任何工业产品不可避免的一部分。本实验的目的是测试不同网面密度(140螺纹/指令180螺纹/厘米)下丝网印刷的不同二维码的可读性。二维码以6种不同尺寸(1 cm2、1.3 cm2、1.6 cm2、1.9 cm2、2.2cm2和2.5 cm2)和3种不同内容(160个字符的短信、短URL和长URL)在7种不同基材(纸170g/m2、不干胶纸、PVC箔、白色和黄色棉布/织物、铝板和玻璃板)上制作。实验中采用D65光源作为日光模拟光源。我们使用Neo Reader软件在HTC Desire手机上读取二维码，使用500万像素的摄像头和自动对焦的可能性。结果表明，采用140线/cm的丝网印刷二维码，可提高二维码的可读性，同时减少二维码所携带的信息，即二维码所包含的字符数。此外，当使用铝板或玻璃板等基板时，可读性问题也会减少。
{"title":"READABILITY OF SCREEN PRINTED QR CODES DEPENDING ON THEIR DIMENSION, ENCODED CONTENT AND TYPE OF PRINTING SUBSTRATE USING SCREEN PRINTING TECHNIQUE","authors":"Ž. Pavlović, S. Dedijer, Magdolna Pál, Ivana Tomić, I. Jurič","doi":"10.7251/GHTE1612037P","DOIUrl":"https://doi.org/10.7251/GHTE1612037P","url":null,"abstract":"QR (Quick Response) code is a two-dimensional code consisting of white and black squares as information carriers.The main advantages of a two-dimensional or matrix code is the possibility of various and extensive content in thegiven area, wherein the amount of encoded data is limited to about 7000 numbers and about 1800 symbols. Theabove-mentioned codes have become an inevitable part of any industrial product. The aim of this experiment was totest readability of different QR codes printed with screen printing with different mesh tread densities (140 threads/cmand 180 threads/cm). The QR codes were prepared in six different dimensions (1 cm2, 1.3 cm2, 1.6 cm2, 1.9 cm2, 2.2cm2 and 2.5 cm2) with three different types of content (textual message-SMS with 160 characters, short URL and longURL) on seven different substrates (paper 170g/m2, self-adhesive paper, PVC foil, white and yellow cotton cloth/fabric,aluminium sheet and glass plate). During the experiment D65 light source was used as a simulation of daylight. Wehave used Neo Reader software for QR code reading on HTC Desire phone, using the 5-megapixel camera andpossibility of autofocus. The results show improved readability with QR codes printed with screen mesh of 140threads/cm and with the reduction of carried information, i.e. the number of characters that QR codes consist of. Also,the problem with readability decreases when using substrates such as aluminium sheet or glass plate.","PeriodicalId":424249,"journal":{"name":"GLASNIK HEMIČARA, TEHNOLOGA I EKOLOGA REPUBLIKE SRPSKE","volume":"02 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：