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Purba Purnama,김수현 한국고분자학회 2014 Macromolecular Research Vol.22 No.1
The development of biomaterials by utilizing natural resources attracted great interest due to environmentalreasons. Lignin as part of biomass can be used as filler in polymer blending. The combination of stereocomplexpolylactide and lignin was successfully generated through a supercritical carbon dioxide - solvent system. The solvationpower of organic solvent to the polylactide and lignin is the key factor to obtain homogeneous blends. The supercriticalcarbon dioxide - tetrahydrofuran is the best system to generate stereocomplex polylactide - lignin blends. The thermaldegradation property of polylactide based materials was improved by combining stereocomplex polylactide andlignin providing the simultaneous effects from the stereocomplex crystallites structure and the formation of char residueof lignin. The combination of fully bio-based materials is a promising candidate to replace non-degradable materialsin the future.
Purba Rayudika Aprilia Patindra,Suong Ngo Thi Minh,Paengkoum Siwaporn,Paengkoum Pramote,Liang Juan Boo 아세아·태평양축산학회 2023 Animal Bioscience Vol.36 No.2
Objective: This study investigated the effects of feeding anthocyanin-rich black cane treated with ferrous sulfate and molasses on animal performance, rumen fermentation, microbial composition, blood biochemical indices, and carcass characteristics in meat goats. Methods: Thirty-two Thai-native×Anglo-Nubian crossbred male goats (14.47±2.3 kg) were divided equally into two groups (n = 16) to investigate the effect of feeding diet containing 50% untreated anthocyanin-rich black cane silage (BS) vs diet containing anthocyaninrich black cane silage treated with 0.03% ferrous sulfate and 4% molasses (TBS) on average daily gain (ADG) and dry matter intake (DMI). At the end of 90 d feeding trial, the goats were slaughtered to determine blood biochemical indices, rumen fermentation, microbial composition, and carcass characteristics differences between the two dietary groups. Results: Goats fed the TBS diet had greater ADG and ADG to DMI ratio (p<0.05). TBS diet did not affect rumen fluid pH; however, goats in the TBS group had lower rumen ammonia N levels (p<0.05) and higher total volatile fatty acid concentrations (p<0.05). Goats in the TBS group had a higher (p<0.05) concentration of Ruminococcus albus but a lower (p<0.05) concentration of methanogenic bacteria. The TBS diet also resulted in lower (p<0.05) thiobarbituric acid-reactive substances concentration but higher (p<0.05) total antioxidant capacity, superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase concentrations in blood plasma, while having no effect on plasma protein, glucose, lipid, immunoglobin G, alanine transaminase, and aspartate aminotransferase. Meat from goats fed the TBS diet contained more intramuscular fat (p<0.05) and was more tender (p<0.05). Conclusion: In comparison to goats fed a diet containing 50% untreated anthocyanin-rich black cane silage, feeding a diet containing 50% anthocyanin-rich black cane silage treated with 0.03% ferrous sulfate and 4% molasses improved rumen fermentation and reduced oxidative stress, resulting in higher growth and more tender meat.
Purnama, Purba,Jung, Youngmee,Kim, Soo Hyun American Chemical Society 2012 Macromolecules Vol.45 No.9
<P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2012/mamobx.2012.45.issue-9/ma202814c/production/images/medium/ma-2011-02814c_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma202814c'>ACS Electronic Supporting Info</A></P>
Endang C. Purba,Marina Silalahi,Nisyawati 한국식품연구원 2018 Journal of Ethnic Foods Vol.5 No.2
Background: Terites is a traditional food of Batak Karo ethnic group, which is cooked with a juice of partly digested food (chyme) of slaughtered cattle. The stomach juice serves as a soup base, cooked together with certain wild and cultivated vegetables, aromatic herbs and possibly also meat. The objectives of this ethnobiological study were to describe terites preparation, document plant species used and to discuss possible implications for the human nutrition. Methods: The data were gathered through individual interviews and group discussions with informants from 6 villages in Karo regency of North Sumatra. The plant specimens were collected in the field and identified taxonomically. Results: A total of 29 plant species belonging to 17 families were used to prepare terites. The main rationale behind consuming this indigenous food was its perceived medicinal value, particularly for the treatment of digestive disorders. Karo people use several lesser-known wild food plants for preparation of this local specialty. To best of our knowledge, consumption of chyme in tropical Asia is so far unique solely to the Batak Karo people. The present ethnographic record of consuming chyme as a medicinal food is also discussed in the context of paleodietary reconstructions. Conclusion: This extraordinary food heritage of Karo indigenous gastronomy, based on traditional knowledge, indicates rich foodscapes and bio-cultural diversity of the Batak Karo ethnic group.
An analysis and prediction model of outsiders percentage as a new popularity metric on Instagram
Kristo Radion Purba,David Asirvatham,Raja Kumar Murugesan 한국통신학회 2020 ICT Express Vol.6 No.3
In this research, a new Instagram popularity metric was defined, i.e. outsiders percentage (OP) of a post. Outsiders are non-followers who liked a user’s post. It was found that OP is the most effective metric if compared to engagement rate and followers growth. Regression models were tested for predicting OP, using features from user data, post data, hashtag, engagement, and image sentiment. The prediction accuracy (R2), reached up to 71.9% using Random Forest. This research also analyzed the trend of each feature against the OP. It was found that hashtag usage is the most important factor in raising OP.
( Rosinta Hotmaida Pebrianti Purba ) 대한결핵 및 호흡기학회 2021 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.129 No.-
Aims Indonesia is entering an aging society with an older people population reaching 26.82 million people or 9.92% of the total population in 2020. It is predicted that the proportion will be elevated to 25% or being the second largest of aging market in 2045. The senior citizen is the COVID-19 most at risk due to comorbidities and low digital literacy. Lung cancer is one of the highest comorbid factors in increasing the risk of death by 13.5 times and increasing to 16.8 times in the elderly due to COVID-19 (Indonesian COVID-19 Task Force, 2020). This condition increases the aging market in Indonesia but low digital literacy will affect the lower quality of life and increase the burden for next generation rapidly. Methods Using data from the 2014 Indonesia Family Life Survey (IFLS), this study aims to analyze mental health problems and mobile phone ownership in older adults (60+) with lung cancer disease. IFLS is a multi-level (individual, household, community, and facility levels), multi-topic, large-scale, and longitudinal survey that has been conducted in five waves since 1993. IFLS 2014 covers 24 of all 34 Indonesian provinces. However, the covered provinces are also the most populated ones, so the survey is representative of 83% of the Indonesian population. Results The analysis shows that the proportion of older people with lung cancer disease reaches 2,57% and 66,4% are men. 26,47% of them experienced mental health problems. They report sleeping restless, bothered by things, hopeless, unable to concentrate, and feeling unhappy. As much as 51,53% of the elderly with lung cancer disease have mobile phones. However, the percentage of elderly with lung cancer disease experiencing mental health problems will decrease by 6,78% when they have a cellphone. The SES of the elderly in Indonesia has a fairly diverse distribution between provinces. Nearly half of older people’s educational attainment is in elementary school (46.05%) and 73% of Indonesian elderly with lung cancer disease are still working. In general, the elderly with higher digital literacy prefer to seek treatment at a formal health facility than traditional practitioners such as shamans. They tend to seek outpatient care treatment at a community health center or Puskesmas (44,11%) and specialists (29,41%). Conclusions Mental health problems increase the risk of fatalities due to COVID-19, although the older adults in Indonesia seniors have become vaccine recipient’s priority. Strategies are needed to mitigate mental health problems and as early detection in the elderly by utilizing the existing community-based integrated service system such as Puskesmas or Posyandu Lansia to encourage the Aging in Place/Community campaign. Mainstreaming the issue of digital aging can help various information and services needed by the elderly to be healthier, independent, and with dignity especially in the new normal era.