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Journal articles on the topic 'Lac Resin'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Badhani, Gaurav, Shruti Yadav, Elen Reji, and Subbarayappa Adimurthy. "Recovery of Lac Resin from the Aqueous Effluent of Shellac Industry." Sustainable Chemistry 4, no. 1 (2022): 1–7. http://dx.doi.org/10.3390/suschem4010001.

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Shellac and aleuritic acid manufacturing industries generate a lot of alkaline aqueous effluent during the process of manufacture of shellac and aleuritic acid from the seedlac/sticklac. The generated effluent contains lac resin, lac wax, lac dye and other water-soluble organic acids. Shellac industries in India face problems with the disposal of aqueous effluent due to the presence of considerable amounts of natural organic molecules and the dark colour solution. To address these problems, we have developed a novel method for the selective recovery of the lac resin from the alkaline aqueous e

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2

Yan, Xiaoxing, Wenting Zhao, and Lin Wang. "Preparation and Performance of Thermochromic and Self-Repairing Dual Function Paint Film with Lac Resin Microcapsules and Fluorane Microcapsules." Polymers 13, no. 18 (2021): 3109. http://dx.doi.org/10.3390/polym13183109.

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Microcapsules with lac resin as the core material and urea-formaldehyde resin as the wall material were prepared by in situ polymerization, and then the lac resin microcapsules and fluorane microcapsules were added into a water-based primer or topcoat, respectively, to prepare water-based coatings with dual functions of thermochromic and self-repair. The effects of different methods of adding microcapsules on the optical properties, mechanical properties, self-repairing properties, and the aging resistance of water-based paint film were investigated, so as to prepare water-based paint film wit

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3

Vikas, yadav, and Sitanshu Dr. "INSECT BIOLOGY, DISTRIBUTION, HOST PLANTS, NATURAL ENEMIES AND BIO-EFFICACY OF PESTICIDES AGAINST MAJOR PREDATORS OF LAC INSECT: A REVIEW." International Research Journal of Modernization in Engineering Technology and Science 5, no. 5 (2023): 7887–93. https://doi.org/10.5281/zenodo.7982628.

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Lac is the valuable Resin secrete by the lac insect. India is major lac producing country about 80% of the total world production. Lac insects are exploited for their products of commerce viz., Resin, dye, and wax. Cultivation of lac not only to provided the livelihood to lac growers it is also helps in conserving vast stretches of forests and biodiversity associated with lac insect complex in India. Lac flourish about 113 varieties of host plants Palas, kusum, ber and khair ,etc for completing their life cycle. During its life cycle the insects spends only few hours of active after that they

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4

SARITA, PASSEY, SEN (nee MAZUMDAR) SOMDUITA, and B. V. SUBRAMANIAN G. "Some Aspects of the Chemistry of Lac-Resin." Journal of Indian Chemical Society Vol. 75, Oct-Dec 1998 (1998): 575–79. https://doi.org/10.5281/zenodo.5915562.

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Department of Chemistry, University of Delhi, Delhi-110 007 <em>Manuscript received 21 July 1998</em> The native lac-resin was fraetionated to a consistent hard-resin fraetion whieh was subjected separately to periodate fission, permanganate oxidation, borobydride reduction and hydrazinolysis. The statistical results are described. The substitution of the hydroxyl function by halogen of the primary terpene adds is also described.

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5

Ramani, R., and K. Sharma. "Record of natural infestation of the Indian Lac Insect, Erria Lacca (Kerr) (Coccoidea: Tachardiidae) on Acacia Tortilis (Forsskal) Hayne and Calliandra Surinamensis Benth." Indian Journal of Forestry 33, no. 2 (2010): 189–91. http://dx.doi.org/10.54207/bsmps1000-2010-lf2jlk.

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The Indian lac insect Kerria lacca (Coccoidea: Tachardiidae) is a beneficial insect, exploited commercially for lac, from which economically important resin, dye and wax are obtained. Natural infestations of this species have been recorded on two hitherto unreported host plants, Acacia tortilis (Forsskal) Hayne and Calliandra surinamensis Benth. Both species belong to Fabaceae, the family which comprises of about one-thirds of reported lac host species. Fairly large populations of the lac insects of good density have been observed on these hosts, indicative of good survival of the lac insect.

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6

SHARMA, S. C., S. K. PANDEY, and N. PRASAD. "Equipments for Manufacturing Lac Based Value Added Products." JOURNAL OF AGRISEARCH 9, no. 03 (2021): 249–54. http://dx.doi.org/10.21921/jas.v9i03.11010.

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Lac, a natural resin of insect origin, yields basically three useful materials i.e.resin, wax and dye and is an important source of livelihood for poor and tribal farmers in the lac growing regions. Lac growers harvest lac in form of lac stick and lac encrustations attached with sticks are then scraped which is known as sticklac. Sticklac contains impurities which need to be removed by converting sticklac in to seedlac through different unit operations under primary lac processing so that seedlac, a semi-refined product, can be further used in making lac based value added products i.e.shellac,

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7

Wang, Weiwei, Pengfei Liu, Qin Lu, et al. "Potential Pathways and Genes Involved in Lac Synthesis and Secretion in Kerria chinensis (Hemiptera: Kerriidae) Based on Transcriptomic Analyses." Insects 10, no. 12 (2019): 430. http://dx.doi.org/10.3390/insects10120430.

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Lac is a type of natural resin secreted by lac insects and is widely used in the military and other industries because of its excellent adhesion and insulation properties. The main ingredients of lac are lactones and lactides, which are formed from hydroxy fatty acids and sesquiterpene esters. In this study, we measured lac secretion rates by the insect Kerria chinensis at different developmental stages and identified lac secretion-minimum and lac secretion-active stages of the insect. We then analyzed transcriptomes of lac secretion-minimum and lac secretion-active stages of the insect. Based

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8

Sarkar, P. C., and A. K. Shrivastava. "FTIR spectroscopy of lac resin and its derivatives." Pigment & Resin Technology 26, no. 6 (1997): 378–81. http://dx.doi.org/10.1108/eum0000000004464.

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9

S.K. Giri, M.F. Ansari, and B. Baboo. "Effect of Storage Methods on Quality of Lac - A Natural Resin." Journal of Agricultural Engineering (India) 47, no. 1 (2024): 26–30. http://dx.doi.org/10.52151/jae2010471.1398.

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A study was carried out to assess the changes in physico-chemical parameters of lac resin during storage for one year. All three forms of lac viz. sticklac, seedlac and shellac were stored following different methods as practiced by lac traders and industries, and some quality parameters of the products were evaluated during storage. Qualitative losses included decrease in flow, heat polymerization time (life) and rate of filtration; and increase in colour index and hot alcohol insolubles of lac resin during storage. In case of sticklac, maximum increase in hot alcohol insolubles (24% in ari a

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10

Kumar, Arvind, and Manju Rani. "Lac, Kerria lacca rearing on Flemingia macrophylla with NPK fertilizer: impact on plant growth, lac yield, and lac parasitisation." European Journal of Biological Research 9, no. 4 (2019): 259–66. https://doi.org/10.5281/zenodo.3551585.

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Lac insect, <em>Kerria lacca</em> Kerr. is the only commercial lac producing insect in the world. This tiny insect reared commercially on many specific host plants. Lac product is a natural resin of outstanding properties which is utilized in many products worldwide. Lac insects get settled on the host tree and take their nutrition continuously from the same part. Hence, additional fertilizer application becomes most important component for sustainable host plant growth and lac cultivation. Therefore, to determine the effect of chemical fertilizers (NPK) on <em>Flemingia macrophylla</em> and l

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11

Niranjan Prasad, K.K. Kumar, S.K. Panday, and M.L. Bhagar. "Development of Modified Power Operated Lac Scraper." Journal of Agricultural Engineering (India) 42, no. 1 (2005): 19–22. http://dx.doi.org/10.52151/jae2005421.1109.

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Lac is the hardened resin secreted by the tiny lac insect (Kerria lacca Kerr). It is the only resin of animal origin. Lac insect S thrive only on certain trees called lac hosts. Butea monospenna (Fa/as), Zizyphus mauritiana (Ber) and Schleichera oleosa (Kusum) are the major lac hosts used for lac cultivation in India. India is the largest producer of lac. Indian lac is considered to be the best in quality. Apart from India, Thailand, Myanmar, Indonesia, Vietnam and China also produce lac. In India about 3 million farmers mostly tribal are involved in the lac cultivation spread over states of J

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12

Kandasamy, Thamilarasi, Mohammed F Ansari, Sajiya Ekbal, and Kewal K Sharma. "Effects of seedlac on soil bacterial diversity: An indication of environmental safety." Revista de Biología Tropical 73, no. 1 (2025): e60353. https://doi.org/10.15517/rev.biol.trop..v73i1.60353.

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Introduction: Lac resin, the only natural resin of animal origin, is exclusively produced by the lac insect (Kerria spp.). It is non-toxic and considered biodegradable. However, the bacteria involved in biodegradation have not been explored. Moreover, the fate of the soil bacteria during biodegradation has not been studied so far. Objective: To explore the fate of soil bacteria due to the burial of seedlac in soil to ascertain whether seedlac is environmentally safe, and to explore the possibilities of identifying any bacterial flora involved in lac biodegradation. Methods: The study began in

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13

Bashir, Nawaz Haider, Huanhuan Chen, Shahzad Munir, et al. "Unraveling the Role of Lac Insects in Providing Natural Industrial Products." Insects 13, no. 12 (2022): 1117. http://dx.doi.org/10.3390/insects13121117.

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In the current era, products made from organic materials enjoy a privileged position because of their inherent safety. The eco-friendly properties of natural lac resins have increased their demand in many industries. It is secreted by sucking insects (Hemiptera, Kerriidae) and comprises three major components, viz., resin, dye, and wax. Lac insects are generally bivoltine in nature and are distributed in tropical and sub-tropical regions with complex multi-trophic habitats. Because of their sedentary habits, lac insects are more vulnerable to predators, parasitoids, squirrels, and rats, leadin

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14

Bhattacharya, R. "Extraction of hard lac resin by means of aqueous solutions." Journal of the Society of Chemical Industry 56, no. 29 (2010): 666. http://dx.doi.org/10.1002/jctb.5000562905.

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15

Elsafi, Mohamed, Nouf Almousa, Fahad I. Almasoud, Mansour Almurayshid, Amjad R. Alyahyawi, and M. I. Sayyed. "A Novel Epoxy Resin-Based Composite with Zirconium and Boron Oxides: An Investigation of Photon Attenuation." Crystals 12, no. 10 (2022): 1370. http://dx.doi.org/10.3390/cryst12101370.

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We have attempted to develop the gamma radiation shielding abilities of newly prepared epoxy composites by introducing ZrO2. The radiation shielding parameters are experimentally reported below. The experimental setup included an HPGe detector and different radioactive point sources which emitted photons with energies of 0.06, 0.662, 1.173, and 1.333 MeV. The gamma radiation shielding abilities of the epoxy composites were examined in the context of the linear attenuation coefficient (LAC), half-value layer (HVL), radiation absorption ratio, and other factors. The experimental and Phy-X result

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16

Bhatia, D., P. C. Sarkar, and M. Alam. "Study of thermal behaviour of lac resin using specular reflectance spectroscopy." Pigment & Resin Technology 35, no. 1 (2006): 36–44. http://dx.doi.org/10.1108/03699420610638030.

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17

Bhatia, Deepika, M. Alam, and P. C. Sarkar. "Specular reflectance and derivative spectrometric studies on lac‐epoxy resin blends." Pigment & Resin Technology 36, no. 1 (2007): 18–29. http://dx.doi.org/10.1108/03699420710718724.

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18

R.N., Majee. "Simple and facile synthesis of (E)-9-hexadecen-1,16-olide (isoambrettolide) and dimethyl (E)-2-undecen-1,11-dioate, a juvenile hormone." Journal of Indian Chemical Society Vol. 89, Oct 2012 (2012): 1439–41. https://doi.org/10.5281/zenodo.5771416.

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Lac Processing and Product Development Division, Indian Institute of Natural Resins and Gums, Namkum, Ranchi-834 010, Jharkhand, India <em>E-mail </em>: r.n.majee@gmail.com <em>Manuscript received 22 March 2010, revised 24 February 2011, accepted 11 January 2012</em> (<em>E</em>)-9-Hexadecen-1,16-olide (isoambrettolide) possessing musk-like odour is used as fixative in perfumery formulations. It has been synthesized from threo-aleuritic acid (9,10,16-trihydroxyhexadecanoic acid) by simple procedure. The compound showed antibacterial activity. Synthesis of dimethyl (<em>E</em>)-2-undecen-1,11-d

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19

Bashir, Nawaz Haider, Weiwei Wang, Xiaofei Ling, et al. "Characterization of Potential Molecular Markers in Lac Insect Kerria lacca (Kerr) Responsible for Lac Production." Insects 13, no. 6 (2022): 545. http://dx.doi.org/10.3390/insects13060545.

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Kerria lacca (Kerr) is an important lac insect extensively used in industrial products in the form of resin, wax and dye. The scarce knowledge on molecular markers for K. lacca is a barrier in elucidating genetic information. Our study identified a total of 16,921 single-nucleotide polymorphisms (SNPs), and 6231 insertions and deletions (InDels)—of which, intergenic variation accounted for 41.22% and 56.30%, and exonic variation accounted for 39.10% and 17.46%, of SNPs and InDels, respectively. Observation of SNPs suggested that nucleotide substitution frequency and transition to transversion

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20

Bhatia, D., P. C. Sarkar, and M. Alam. "Specular reflectance and derivative spectrometric studies of lac‐phenol formaldehyde resin blends." Pigment & Resin Technology 35, no. 4 (2006): 205–15. http://dx.doi.org/10.1108/03699420610677208.

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21

Abbas, Mahmoud I., Abdullah H. Alahmadi, Mohamed Elsafi, et al. "Effect of Kaolin Clay and ZnO-Nanoparticles on the Radiation Shielding Properties of Epoxy Resin Composites." Polymers 14, no. 22 (2022): 4801. http://dx.doi.org/10.3390/polym14224801.

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The use of radiation is mandatory in modern life, but the harms of radiation cannot be avoided. To minimize the effect of radiation, protection is required for the safety of the environment and human life. Hence, inventing a better shield than a conventional shielding material is the priority of researchers. Due to this reason, this current research deals with an innovative shielding material named EKZ samples having a composition of (epoxy resin (90–40) wt %-kaolin clay (10–25) wt %-ZnO-nano particles (0–35) wt %). The numerous compositional variations of (epoxy resin, kaolin clay, and ZnO-na

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22

Prasad, Niranjan, Kulwant Sharma, J. Tiwari, Rajeev Gupta, and Moni Thomas. "Mechanization of Natural Gum and Resin Tapping." Journal of Non-Timber Forest Products 19, no. 4 (2012): 279–89. http://dx.doi.org/10.54207/bsmps2000-2012-a5u0a9.

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Indonesia, India and China are among the world’s major producers of gums and resins. India is the leading producer of lac, Guar Gum and Gum Karaya. Gum and resin are important minor forest produce and are a source of livelihood for tribals residing in forest, sub-forest, desert and mountain areas. Some state governments have banned the tapping of resins and gums as the method for tapping are destructive in nature. To give proper attention to these important export oriented minor forest products, ICAR has approved a Network Project on Harvesting, Processing and Value Addition of Natural Resins

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23

Ahuja, Arihant, and Vibhore Kumar Rastogi. "Shellac: From Isolation to Modification and Its Untapped Potential in the Packaging Application." Sustainability 15, no. 4 (2023): 3110. http://dx.doi.org/10.3390/su15043110.

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Recently, terms such as sustainable, bio-based, biodegradable, non-toxic, or environment-benign are being found in the literature, suggesting an increase in green materials for various applications in the future, particularly in the packaging application. The unavoidable shift from conventional polymers to green materials is difficult, as most bio-sourced materials are not water-resistant. Nonetheless, Shellac, a water-resistant resin secreted by a lac insect, used as a varnish coat, has been underutilized for packaging applications. Here, we review Shellac’s potential in the packaging applica

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Bhatia, D., P. C. Sarkar, and M. Alam. "Specular reflectance and derivative spectrometric studies on lac‐melamine formaldehyde (MF) resin blends." Pigment & Resin Technology 35, no. 5 (2006): 260–69. http://dx.doi.org/10.1108/03699420610692869.

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Sarkar, P. C., and A. K. Shrivastava. "FT‐IR spectroscopic studies on degradation of lac resin – part I: thermal degradation." Pigment & Resin Technology 29, no. 1 (2000): 23–28. http://dx.doi.org/10.1108/03699420010309068.

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Khanna, B. B. "Studies on bleaching of lac I. Action of sodium hypochlorite on the resin." Journal of Applied Chemistry 20, no. 12 (2007): 392–96. http://dx.doi.org/10.1002/jctb.5010201207.

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27

Divakara, B., and R. Krishnamurthy. "Exploring the possibility of summer (Jethwi) lac cultivation on non-traditional host in understorey of Dalbergia sissoo Roxb." Journal of Non-Timber Forest Products 17, no. 3 (2010): 325–30. http://dx.doi.org/10.54207/bsmps2000-2010-nl248b.

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Lac a natural resin of animal origin that comes from an apple seed size insect Kerria lacca Kerr. (Tachardiidae: Homoptera). Traditionally lac is commercially cultivated on traditional hosts like Kusum (Schleichera oleosa), Palas (Butea monosperma) and Ber (Ziziphus mauritiana). To overcome the problems of long gestation period, scattered distribution and high crown of these traditional hosts, considerable efforts were made to explore suitable non-traditional host plants of short gestation period and low crown. In this context, non-traditional host species like Flemingia macrophylla and F. sem

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28

Lorca, Daniela, Constanza Tiffi, Raimundo Sarmiento, and Jaime Sarmiento. "In vitro comparison of marginal infiltration between a conventional resin and a bulk-fill resin, in the relocation of cervical margins technique." Journal of Oral Research 12, no. 1 (2023): 1–11. http://dx.doi.org/10.17126/joralres.2023.001.

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Introduction: Proximal lesions that exceed the cement enamel limit (ACE) under the gingival margin complicate impressions and the adhesive technique. Compare the magnitude of micro infiltration between conventional resin and bulk fill resin in the cervical margin relocation technique. Materials and Methods: 48 samples of human teeth re-ceived two preparations: occluso-mesial (OM) and occluso-distal (OD) under LAC; first they received the cervical margin relocation technique (RMC) with bulk fill and conventional resin; then restored with semi-direct resinous inlays. Sample analysis: immersion i

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Bhatia, D., M. Alam, and P. C. Sarkar. "Studies on thermal stress of lac‐polyvinyl butyral resin blends through specular reflectance spectra." Pigment & Resin Technology 36, no. 6 (2007): 350–62. http://dx.doi.org/10.1108/03699420710831773.

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30

Singh, KJ, KI Singh, SM Haldhar, NO Singh, and N. Rustom. "Study on host preference of lac insect species existing in Manipur." International Journal of Agriculture, Environment and Biotechnology 14, no. 3 (2021): 387–91. https://doi.org/10.30954/0974-1712.03.2021.15.

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Lac insect, Kerria lacca kerr. is a boon of nature to mankind. Lac insect is of economic importance as it produces resin, wax and dye and its productivity, quality and quantity depends on the hosts on which it is cultivated. The investigation was carried out in the completely randomized block design with five hosts replicated three times to study the host preference of lac insect species existing in Manipur under greenhouse condition during katki season of 2019-20. The mean initial density of first instar nymph on hosts varied in different portions of hosts which range

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31

Sarkar, P. C., and A. K. Shrivastava. "FT‐IR spectroscopic studies on degradation of lac resin – part II: ageing and UV irradiation." Pigment & Resin Technology 29, no. 2 (2000): 75–81. http://dx.doi.org/10.1108/03699420010317816.

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Bohra, N. K., Varsha giri, Apurva Yadav, and Prakash Yadav. "Studies on Seed quality and germination parameters using different treatments in Butea monosperma." Asian Journal of Basic Science & Research 06, no. 01 (2024): 159–72. http://dx.doi.org/10.38177/ajbsr.2024.6115.

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Butea monosperma (Lam.) Taub (Fabaceae) is a medium‐sized tree of the Indian sub‐continent. It is an important species that yields several non‐ timber forest products, such as a water‐soluble dye, lac resin, fodder and leaves for platters .The plant has beautiful flowers adorning leafless canopies during early summer and is aptly described as „the flame of the forest‟. Seeds from different locations in Rajasthan were analyzed for seed quality as well as germination potentials with different treatments. GA3 was found to increase seed germination in compare to other. A detailed work with review

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33

Mahmoud, Karem G., M. I. Sayyed, Aljawhara H. Almuqrin, Jack Arayro, and Yasser Maghrbi. "Monte Carlo Investigation of Gamma Radiation Shielding Features for Bi2O3/Epoxy Composites." Applied Sciences 13, no. 3 (2023): 1757. http://dx.doi.org/10.3390/app13031757.

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Three different samples were synthesized based on polyepoxide resin, a solidifying agent, and a Bi2O3 doping compound. The polyepoxide resin and solidifying agent were added in a 2:1 ratio by weight and the Bi2O3 compound was added in ratios of 0, 5, and 10 wt. %. The density of the synthesized composites was measured using an MH-300A densimeter with an uncertainty in measurement of 0.001 g/cm3. The measurements showed that the density of the fabricated composite varied from 1.103 g/cm3 to 1.20 g/cm3 when the reinforcing Bi2O3 compound was raised from 0 wt. % to 10 wt. %. Furthermore, the γ-ra

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Shamim, Gulsaz, D. M. Pandey, R. Ramani, and K. K. Sharma. "Identification of genes related to resin biosynthesis in the Indian lac insect, Kerria lacca (Hemiptera: Tachardiidae)." International Journal of Tropical Insect Science 34, no. 02 (2014): 149–55. http://dx.doi.org/10.1017/s1742758414000277.

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35

Saha, Dipnarayan, Sanjeev Kumar Ranjan, Chandana Basu Mallick, Ambarish Sharan Vidyarthi, and Ranganathan Ramani. "Genetic diversity in lac resin-secreting insects belonging to Kerria spp., as revealed through ISSR markers." Biochemical Systematics and Ecology 39, no. 2 (2011): 112–20. http://dx.doi.org/10.1016/j.bse.2011.01.016.

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Sarkar, P. C., and K. K. Kumar. "An investigation into the different forms of lac resin using FT‐IR and diffuse reflectance spectroscopy." Pigment & Resin Technology 30, no. 1 (2001): 25–34. http://dx.doi.org/10.1108/03699420110364138.

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37

R.N., Majee, Bhattacharya A., K. Jaiswal A., R. Bhattacharya D., and Prakash Anil. "Syntheses of 1,9-nonanedioldiacetate and 1, 7-heptanedioldiacetate mosquito repellants from aleuritic acid of lac resin." Journal of Indian Chemical Society Vol. 90, Jan 2013 (2013): 109–10. https://doi.org/10.5281/zenodo.5764244.

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lndian Institute of Natural Resins and Gums, Ranchi-834 010, Jharkhand, India <em>E-mail</em> : lppd@ilri.ernet.in Fax : 91-651-2260202 Regional Medical Research Centre, N. E. Region, Dibrugarh-786 001, Assam, India <em>Manuscript received 08 October 2010, revised 06 February 2012, accepted 02 April 2012</em> 1,9-Nonanedioldiacetate and 1,7-heptanedioldiacetate were synthesized from aleuritic acid (9,10,16- trihydroxyhexadecanoic acid), for the first time adopting simple procedure. Both the compounds showed mosquito repellant activity.

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Singh, C. "forest flora in the life and economy of the tribals of santhal parganas, jharkhand." Journal of Non-Timber Forest Products 10, no. 1/2 (2003): 20–33. http://dx.doi.org/10.54207/bsmps2000-2003-0pkmb6.

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The forest of Santhal Parganas (Jharkhand) is rich in the diversity of flora. Its extant flora affords the basic needs of the tribals living amidst the forest for centuries. The tribals put the forest flora and its parts/ products in their diverse domestic uses as food, fuel, fodder, fibre, bamboowares, timber, medicine, oil, fish poison, etc., and also they sell these things to earn money. To sustain both the surviving forest as well as the tribals dwelling therein, it is imperative to stop deforestation, set up/encourage forest-based labour intensive works (sabai grass-based rope making indu

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Sutherland, K., and J. C. del Río. "Characterisation and discrimination of various types of lac resin using gas chromatography mass spectrometry techniques with quaternary ammonium reagents." Journal of Chromatography A 1338 (April 2014): 149–63. http://dx.doi.org/10.1016/j.chroma.2014.02.063.

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Pasinggi, Defilia Winrianti, Ridwan Ridwan, and Syamsu Alam. "Peramalan Ekspor Hasil Hutan Indonesia ke Amerika Serikat Tahun 2019 - 2028." Syntax Literate ; Jurnal Ilmiah Indonesia 5, no. 11 (2020): 1283. http://dx.doi.org/10.36418/syntax-literate.v5i11.1765.

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Penelitian ini bertujuan untuk memprediksi potensi volume ekspor hasil hutan Indonesia berupa furnitur, veneer, lac, permen karet dan resin ke Amerika Serikat dari tahun 2019 hingga 2028. Metode analitik yang digunakan adalah perkiraan kuantitatif dengan metode rangkaian waktu. Rangkaian waktu data selama sembilan belas tahun adalah data yang digunakan dari 2000-2018. Dalam prakiraan produk hutan, 3 persamaan digunakan, yaitu persamaan tren linear, tren kuadrat dan tren eksponensial. Prakiraan produk hutan dilakukan dengan menganalisis tiga persamaan, kemudian memilih persamaan mana yang palin

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Sarkar, Apurba, P. C. Mitra, A. R. Roy, and G. C. Biswas. "Tropical jute with coated and uncoated urea." Journal of Agricultural Science 109, no. 1 (1987): 187–88. http://dx.doi.org/10.1017/s0021859600081132.

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Jute (Corchorus capsularis L.) is grown in the tropics. It is next only to cotton in importance as a fibre crop. Adequate supplies of plant nutrients, especially N, are essential for its vegetative growth. Response to applied N varies from region to region. In a light-textured soil with low cation exchange capacity (CEC), part of the applied N is generally lost mostly under rainfall (Engelsted & Russel, 1975) and the rest is manifested in the form of residual effect (McEwen, 1970). Such losses can be reduced by using slow-release N fertilizers or by coating the urea granules by paraffin wa

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Bishnoi, Anjali, H. M. Chawla, and Maulin Shah. "Influence of coating developed from oligomer isolated from lac resin on post-harvest quality and shelf life of peaches (Prunuspersica L.)." Canadian Journal of Biotechnology 1, no. 4 (2018): 80–87. http://dx.doi.org/10.24870/cjb.2017-000111.

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Eke, Canel, and A. Yildirim. "Investigation of Photon Attenuation Properties of CR-39 Lens." HNPS Proceedings 27 (April 17, 2020): 60. http://dx.doi.org/10.12681/hnps.2475.

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The purpose of this study is to investigate photon attenuation parameters of Colombia Resin-39 (CR-39) lens, which are linear attenuation coefficient (LAC), mass attenuation coefficient (MAC), half value layer (HVL), tenth value layer (TVL), mean free path (MFP), effective atomic number (Zeff) and effective electron density (Neff). MACs were determined theoretically and with simulation in the energy range from 0.01 to 105 MeV. Also, obtained MACs of CR-39 lens were compared with MACs of pure aluminum and lead. Theoretically obtained Zeff values were compared with Zeff results obtained by the c

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Rotondo, Felipe, Rodrigo Coniglio, Leandro Cantera, Ignacio Di Pascua, Leonardo Clavijo, and Andrés Dieste. "Lignin-based coatings for controlled P-release fertilizer consisting of granulated simple superphosphate." Holzforschung 72, no. 8 (2018): 637–43. http://dx.doi.org/10.1515/hf-2017-0176.

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AbstractA novel lignin-based slow release fertilizer with low environmental impact has been developed. More precisely, a granulated simple superphosphate fertilizer, consisting of calcium phosphate monobasic [Ca(H2PO4)2·H2O] and gypsum (CaSO4·2H2O) was coated with modified kraft lignins and the diffusion of phosphorus was observed as a function of time. The lignin was hydroxymethylated with formaldehyde and subsequently cross-linked with phenol-formaldehyde resin resulting in HML-PF as coating. Moreover, coating films were prepared from a mixture of acetylated lignin (Lac) and acetylated cellu

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Yang, Jie, Zhibo Zhou, Tianji Lu, and Ling Shen. "Investigation of Gold Gilding Materials and Techniques Applied in the Murals of Kizil Grottoes, Xinjiang, China." Applied Sciences 12, no. 21 (2022): 11202. http://dx.doi.org/10.3390/app122111202.

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The present work reports the identification of inorganic and organic materials applied in gildings of Kizil Grottoes mural paintings, located in the western part of China. A total of 10 gold gilding samples were collected from caves dated in the fourth–seventh century AD. In this research, optical microscopy, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX), UV fluorescence microscopy, and pyrolysis gas chromatography–mass spectrometry (Py-GC/MS) analyses were carried out to clarify the mordant materials and the coating materials on the foils. This research re

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Praphanwittaya, Pitsiree, and Thawatchai Phaechamud. "Bleached Shellac as an Alternative Polymeric Matrix for In Situ Microparticle." Key Engineering Materials 659 (August 2015): 8–12. http://dx.doi.org/10.4028/www.scientific.net/kem.659.8.

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Bleached shellac (BS), a biodegradable natural resin purified from insect lac, has been used in a varity of controlled drug delivery systems. Nevertheless, there were negligible researches explored the potential of it as in injectable in situ microparticles (ISM) applications. The goal of this study was to utilize BS to form ISM (shellac-solution dispersed into an external olive oil phase, as o/o emulsion) prepared by two-syringe technique. Addition of glyceryl monostearate (GMS) as stabilizer obviously decreased the emulsion droplet size. ISM emulsion comprising 5% w/w GMS in external phase c

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Swami, Saurabh, Arumugam Mohanasundaram, and Vaibhav D. Lohot. "Characterization of the Fragrant Resin from <i>Shorea roxburghii</i>, a Lac Insect Host Tree of Tropical Deciduous Forest in South India." Indian Forester 150, no. 1 (2024): 46. http://dx.doi.org/10.36808/if/2024/v150i1/166512.

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Liu, Mihaela, Guanglin Xu, Jianan Wang, et al. "Effects of Shellac Treatment on Wood Hygroscopicity, Dimensional Stability and Thermostability." Coatings 10, no. 9 (2020): 881. http://dx.doi.org/10.3390/coatings10090881.

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Dimensional stability proves to be an important factor affecting the quality of wooden products. As a sort of crude and thermoplastic resin, shellac excreted by lac insects demonstrates water-repellent and environmental-friendly features. The research impregnated shellac with wood at room temperature and with a vacuum-pressure procedure. Efforts were made to examine how shellac treatment affected the dimensional stability, moisture absorption, chemical structure, thermostability, as well as morphological characteristics of wood. Results indicated that shellac treatment was a type of efficient

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Zanatta, Rayssa Ferreira, Beatriz Maria da Fonseca, Stella Renata Steves, Carlos Rocha Gomes Torres, and Sergio Eduardo Paiva Gonçalves. "Effect of Nd:YAG laser in the bond strength of fiberglass posts." Brazilian Dental Science 18, no. 4 (2015): 19. http://dx.doi.org/10.14295/bds.2015.v18i4.1164.

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<p>The aim of the present study was to compare the effects of Nd:YAG laser application in root canals on bond strengths of fiber posts. Thirty single-rooted bovines were randomly divided into three groups (n=10); root canal instrumentation was performed, and pretreatment was conducted as follows: C group: conventional treatment (without laser irradiation); ALC group: Nd:YAG laser was applied after adhesive; and LAC group: Nd:YAG laser was applied before adhesive. The fiber posts Rebilda 15 DC (Voco) were cemented with an adhesive system and resin cement, in accordance with the manufactur

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Akamatsu, Hyoma, Sakika Kubo, Seiya Kikuchi, et al. "Dependence of Carboxylate Anions on Physicochemical Properties of Tributyloctylphosphonium-Based Ionic Liquids." ECS Meeting Abstracts MA2024-02, no. 57 (2024): 3823. https://doi.org/10.1149/ma2024-02573823mtgabs.

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Ionic liquids, i.e. organic molten salts composed of cations and anions with melting points below 100°C, have unique properties such as high ionic conductivity, high thermal stability, low vapor pressure, low flammability, and so on. Among the numerous ionic liquids, considerable ionic liquids based on carboxylate anions have been reported1). On the other hand, several published papers reported ionic liquids based on quaternary phosphonium cations, demonstrating relatively high transport properties and thermal stability2,3). Our research group has preliminarily attempted to design and synthesi

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