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Aegerin Hafiz Sucipto
"Limbah dari distilasi vakum kilang minyak mentah di Indonesia masih belum dimanfaatkan sepenuhnya. Vacuum residue memiliki potensi untuk digunakan sebagai bahan baku untuk menghasilkan mesophase pitch dengan menghilangkan kandungan asphaltene dengan heksana sebagai ekstraktan asphaltene, kemudian diikuti dengan metode polimerisasi termal dilakukan secara isotermal dalam waktu tertentu. Mesophase pitch dianggap sebagai prekursor yang sangat baik untuk membuat berbagai macam produk rekayasa karbon industri canggih seperti serat karbon, needle coke, dan anoda baterai Li-ion. Untuk meningkatkan tingkat polimerisasi senyawa aromatik, dalam penelitian ini, vacuum residue dihilangkan lalu dicampur dengan dengan gondorukem, residu dari distilasi getah pohon pinus yang mengandung cycloparaffin, conjugated double bond, dan karboksil, sebelum polimerisasi. Polimerisasi berlangsung pada reaktor tangki berpengaduk, dengan kondisi operasi 350oC, laju alir N2100 mL/menit, holding time 30 menit dan heating rate 5oC/menit. Jumlah gondorukem yang dicampur dengan deasphalted vacuum residue bervariasi pada 0 , 5 , 10 , 15 . Persentase aromatik dari mesophase pitch yang dihasilkan adalah 3,1-5,2 dengan ukuran krsitalin 39,2-44,4 dan interlayer distance 4,12 .

Waste from vacuum distillation of crude oil refineries in Indonesia is still not fully utilized. Vacuum residue has the potential to be used as a feedstock to produce mesophase pitch by removing its asphaltene content with n hexane as asphaltene extractant, then followed by thermal polymerization method performed isothermally for a certain time. Mesophase pitch is regarded as an excellent prekursor for making a wide variety of industrial and advanced engineering carbon products such as carbon fibers, needle coke, Li ion battery anodes and many more. In order to improve level of polymerization of aromatic compounds, in the current research, deasphalted vacuum residue was mixed first with gum rosin, a residue of pine trees containing conjugated double bonds, prior to polymerization. Polymerization occurs in a stirred tank reactor, with operation condition 350oC, N2 flowrate 100 mL min, holding time 30 minutes and heating rate 5oC min. The amount of gum rosin mixed with deasphalted vacuum residue was varied at 0 wt, 5 wt, 10 wt, 15 wt. The resulted mesophase pitch consist aromatic within the range of 3.1 5.2 with crystallite size between 39.2 44.4 and 4.12 interlayer distance. "
Depok: Fakultas Teknik Universitas Indonesia, 2018
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UI - Skripsi Membership  Universitas Indonesia Library
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Rigita Ayu Dyah Prawestiningrum
"Penelitian ini bertujuan untuk mengetahui pengaruh perendaman larutan nanas terhadap kekerasan permukaan resin komposit bulk-fill. Enam puluh spesimen resin komposit Tetric®N-Ceram Bulk-Fill shadeIVB berdiameter 6 mm dan tebal 3 mm dibagi menjadi dua kelompok perlakuan, yaitu perendaman dengan aquades sebagai kontrol dan larutan nanas pH: 3,8±0,1(n= 30). Sebelumnya seluruh kelompok direndam terlebih dahulu dalam aquades selama 24 jam dalam inkubator bersuhu 37oC sebagai baseline. Kemudian masing-masing kelompok tadi akan direndam kembali dalam larutan selama 1 hari, 3 hari dan 7 hari (n= 10). Kekerasan permukaan diukur menggunakan HMV-G SeriesVickers Micro Hardness Tester Shimadzu®dengan indenter Knoop. Setiap spesimen akan diindentasi dengan beban sebesar 50 gf, sebanyak 5 kali indentasi. Hasil penelitian menunjukkan bahwa terdapat perbedaan bermakna (p<0,05)antara perendaman 1 hari, 3 hari dan 7 hari pada kelompok perendaman larutan nanas dengan uji One-way ANOVA. Disimpulkan bahwa larutan nanas dapat menurunkan kekerasan permukaan resin komposit bulk-fill.

This study aims to determine effect of pineapple solution immersion on surface hardness of bulk-fill composite resin. Sixty specimens of Tetric®N-Ceram Bulk-Fill composite resin shade IVB, 6 mm in diameter and 3 mm thick were divided into two groups, with immersion in aquades as a control and pineapple solutionpH: 3,8±0,1 (n= 30). Before immersion, all specimens were immersed in aquades for 24 hours and were saved in incubator at 37oC as a baseline.Each group of immersions would be divided into three groups, with immersion for 1 day, 3 days and 7 days (n= 10). The surface hardness was measured using HMV-G Series Vickers Micro Hardness Tester Shimadzu®with Knoop Indenter. Each specimen was indented with load of 50 gf for 5 times. The results showed that there were statistically significant differences (p <0.05) between pineapple solution immersion for 1 day, 3 days and 7 days with One-way ANOVA test. It can be concluded that pineapple solution can reduce surface hardness of bulk-fill composite resin."
Jakarta: Fakultas Kedokteran Gigi Universitas Indonesia, 2018
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UI - Skripsi Membership  Universitas Indonesia Library
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Zuraida Fatma P. Irawan
"Selain memproduksi kayu, pohon pinus juga menghasilkan getah atau oleoresin. Bila terpentin dan air dari oleoresin ini diuapkan, akan dihasilkan rosin, yaitu suatu padatan yang bersifat resin. Rosin ini telah dimanfaatkan dalam keperluan industri yaitu industri kertas, sabun, batik, vernis, semen dan lain-lain. Pada industri kertas dan semen, rosin digunakan sebagai penolak air, sehingga tahan terhadap cairan seperti air, tinta dan minyak.
Pada penelitian ini telah dilakukan analisis komposisi asam-asam resin dari rosin jenis WW dan WG secara kualitatif dan kuantitatif dengan menggunakan kromatografi kertas gas.
Percobaan yang dilakukan didahului dengan memisahkan fraksi asam dan fraksi netralnya dengan cara mengekstraksi dengan larutan natrium hidroksida dengan konsentrasi to hingga 5%- dan natrium bikarbonat 5%. Fraksi asam yang terbesar diperoleh dari rosin WG Sapuran dengan menggunakan larutan natrium hidroksida 4%.
Analisis kualitatif dilakukan dengan cara membandingkan waktu retensi metil ester resin dari contoh rosin dengan waktu retensi metil ester resin baku. Hasil analisis menunjukkan bahwa komposisi rosin terdiri dari asam sandarokopimarat, asam palustrat, asam isopimarat, asam abietat, asam dehidroabietat, asam merkusat, asam neoabietat dan komponenkomponen lain yang belum dapat ditetapkan.
Analisis kuantitatifnya dilakukan dengan menghitung masing-masing komposisi metil ester resin dengan menggunakan cara area kompensasi. Hasil analisis menunjukkan bahwa komposisi asam-asam resin tidak ditentukan oleh banyaknya asam resin dan komposisi asam resin tidak banyak mengalami perubahan pada konsentrasi natrium hidroksida 31."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1995
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UI - Tesis Membership  Universitas Indonesia Library
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Ahmad Waliy
"Resin alkid merupakan bahan polimer yang banyak dipakai dalam formulasi cat dan umumnya dibuat dari bahan baku minyak nabati seperti minyak biji bunga matahari. Pada penelitian ini resin alkid hendak dibuat dari minyak kulit biji mete (CNSL) untuk formulasi cat anti fouling yang akan diterapkan sebagai cat lambung kapal. Pemilihan CNSL sebagai bahan cat anti fouling didasarkan pada sifat licin dan kandungan senyawa fenol (asam anakardat) yang tinggi supaya biota laut tidak menempel erat pada permukaan badan kapal. Penelitian dilakukan menggunakan minyak biji mete (cashew nut shell liquid) yang direaksikan dengan gliserol untuk membentuk ester poliol, ester ini kemudian direaksikan dengan anhidrida ftalat untuk menghasilkan resin alkid. Esterifikasi CNSL dengan gliserol dilakukan menggunakan tiga katalis berbeda, yaitu asam sulfat, padatan SiO2-H2SO4 dan PbO dengan suhu yang divariasikan.
Ester yang terbentuk diharapkan merupakan monogliserida. Karakterisasi dilakukan menggunakan TLC, FTIR, HPLC, dan GC/MS. Reaksi yang menghasilkan ester adalah reaksi dengan katalis asam sulfat setelah bereaksi selama 24 jam pada suhu 110 oC. Ester tersebut digunakan membuat resin dengan anhidrida ftalat dengan katalis PbO. Resin tidak terbentuk dengan baik karena tidak terbentuknya monogliserida pada tahap esterifikasi.

Alkyd resin, a polymer product, which is mostly used in paint formulations and usually produced from vegetable oils, such as sunflower oil. In this research alkyd resin was prepared from cashew nut shell liquid (CNSL) for the formulation of anti fouling paint to be applied on the surface of ship’s body. The reason of selecting CNSL for anti fouling paint component based on the slippery property of CNSL and the high content of phenolic compound of anacardic acid, to prevent sea mollusca strongly attached on the surface of ship body. This research used cashew nut sell liquid (CNSL) as the raw material, which was reacted with glycerol to produced ester.
The ester was further reacted with phthalic anhydride to produce alkyd resin. Esterification of CNSL with glycerol used three different catalyst; sulfuric acid, the solid of SiO2-H2SO4 and lead (II) oxide. The reaction temperatures were varied in each reaction. The characteristics of products were evaluated by TLC, FTIR, HPLC and GC/MS analysis. The reaction of CNSL and glycerol was successfully catalysed by sulfuric acid for 24 h reaction under reflux at temperature of 110 oC. The ester product was used to make alkyd resin with phthalic anhydride and PbO catalyst. Unfortunately the resin was not formed properly due to the unproperly chemical structure of the ester product.
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Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2013
T35675
UI - Tesis Membership  Universitas Indonesia Library
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Rani Salsabila
"Caffeic acid dapat dianggap sebagai natural anti-oxidant yang esensial Namun, rendahnya solubilitas dan stabilitas caffeic acid di berbagai macam pelarut membatasi applikasi pada industri. Sintesis dari alkyl ester caffeic acid sangat menguntungkan berdasarkan fungsi biologis maupun potensi aplikasinya. Salah satu turunan dari caffeic acid, caffeic acid phenethyl ester CAPE merupakan senyawa dengan banyak aktivitas biologis yang berguna. Metode untuk mensintesis CAPE adalah dengan esterifikasi menggunakan katalis ion exchange resin. Tahap pertama merupakan esterifikasi dari caffeic acid dengan metanol untuk memproduksi metil kafeat. Kondisi reaksi dan parameter kinetika untuk reaksi sintesis metil kafeat dengan methanol menggunakan cation-exchange resin sebagai katalis akan dianalisis dan produk metil kafeat dikonfirmasi menggunakan Ultra Peroformance Liquid Chromatography UPLC . Kondisi optimum dimana produk metil kafeat tertinggi dihasilkan adalah sebagi berikut: suhu reaksi 60 C dan waktu reaksi 4 jam. Kinetika reaksi diasumsikan menggunakan pseudo-homogenous first order model dan hubungan antara suhu dan forward rate constant menghasilkan energi aktivasi 51 kJ/mol. Hasil tersebut mengindikasikan bahwa cation-exchange resin memiliki aktivitas katalisis yang tinggi.

Caffeic acid CA could be considered as an important natural anti oxidant. However, the low solubility and stability of CA in various solvent is limiting the application in industry. It is advantageous to synthesize alkyl ester of caffeic acid based on both their biological function and potential application. One of the caffeic acid derivatives called caffeic acid phenethyl ester CAPE is a compound with numerous important biological activities. To synthesize CAPE one of the method used is catalyzed esterification of caffeic acid and phenethyl alcohol using ion exchange resin catalyst. The first step of the process is to perform esterification of caffeic acid and methanol to produce methyl caffeate MC . MC would then be used to produce CAPE in the presence of phenethyl alcohol. Herein, the reaction condition and kinetic parameters for the synthesis of MC using cation exchange resin as a catalyst were investigated, and the product was confirmed by ultra performance liquid chromatography UPLC . The highest yield of MC catalyzed by cation exchange resin attained under the optimum condition as follows reaction temperature of 60 C and a reaction time of 4 h. The esterification kinetics of CA and methanol is described by the pseudo homogenous first order model. The relationship between temperature and the forward rate constant gives activation energy of 51 kJ mol. These results indicated that cation exchange resin possesses high catalytic activity in the synthesis of MC, which is an efficient catalyst suitable for MC production."
Depok: Fakultas Teknik Universitas Indonesia, 2018
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UI - Skripsi Membership  Universitas Indonesia Library
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"The use of reactive polymers enables manufacturers to make chemical changes at a late stage in the production process?these in turn cause changes in performance and properties. Material selection and control of the reaction are essential to acheive optimal performance. The second edition of Reactive Polymers Fundamentals and Applications introduces engineers and scientists to the range of reactive polymers available, explains the reactions that take place, and details applications and performance benefits.
Basic principles and industrial processes are described for each class of reactive resin (thermoset), as well as additives, the curing process, and applications and uses. The initial chapters are devoted to individual resin types (e.g. epoxides, cyanacrylates, etc.); followed by more general chapters on topics such as reactive extrusion and dental applications. Material new to this edition includes the most recent developments, applications and commercial products for each chemical class of thermosets, as well as sections on fabrication methods, reactive biopolymers, recycling of reactive polymers, and case studies. Injection molding of reactive polymers, radiation curing, thermosetting elastomers, and reactive extrusion equipment are all covered as well."
Oxford, UK: William Andrew, 2013
e20427684
eBooks  Universitas Indonesia Library
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Rahmita Nuraini
"ABSTRAK
Status kesehatan gigi dan mulut seseorang sangat ditentukan oleh perilakunya dalam menjaga kesehatan. Pengaruh faktor lingkungan berupa interaksi dengan lingkup terkecil akan mempengaruhi terbentuknya perilaku. Orang tua terutama ibu memiliki peran yang sangat penting dalam mendidik anak dan menjadi contoh bagi pembentukan perilaku. Proses peradangan gingiva sebagai awal dari terjadinya penyakit periodontal dapat terjadi sejak gigi sulung erupsi dan pada anak usia prasekolah merupakan periode awal terjadinya gingivitis, sehingga perlu dilakukan penelitian mengenai hubungan perilaku pemeliharaan kesehatan gigi dan mulut ibu dengan status gingiva ibu dan anak usia 3-5 tahun. Subjek pada penelitian ini adalah 60 anak berusia 3-5 tahun yang bersekolah di TK Cempaka Kelurahan Gondangdia Jakarta Pusat, TK YWPM Kelurahan Tanah Tinggi Jakarta Pusat, TK Mutiara Indonesia Bekasi beserta ibunya. Metode Penelitian ini menggunakan rancangan survei analitik potong lintang. Di dalam rancangan ini pada seluruh subyek dilakukan pengambilan data mengenai perilaku pemeliharaan kesehatan gigi dan mulut ibu menggunakan kuesioner HU-DBI dan pemeriksaan kesehatan gingiva pada ibu dan anak berdasarkan ORI, GI dan pemeriksaan derajat keasaman (pH) saliva. Distribusi frekuensi jawaban kuesioner menunjukkan bahwa perilaku ibu dalam menjaga kesehatan gigi dan mulutnya adalah baik. Hasil uji korelasi Spearman menunjukkan bahwa terdapat hubungan bermakna antara perilaku ibu dengan ORI, GI ibu, pH saliva ibu serta ORI-C.

ABSTRACT
Oral health status is determined by health behavior. Environmental interactions in the family will affect behavioral shaping. Parents especially mothers have an important role on educating their children. Gingival inflammation indicates the process of periodontal disease and can begin as early as the first tooth erupts. Preschool children is a period when gingivitis can occur, therefore a research on relationship between mothers’ oral health behavior with gingival health status of herself and children needs to be done. Subject in this study are 60 pairs of mother
and their 3-to-5-year-old children from TK Cempaka Kelurahan Gondangdia Jakarta Pusat, TK YWPM Kelurahan Tanah Tinggi Jakarta Pusat, TK Mutiara Indonesia Bekasi. Research method is cross sectional analytical survey. Examination on mothers’ behavior using Hiroshima University Dental Behavioral Inventory (HUDBI)
questionnaire. The clinical parameter consist of mother-children’s gingival health status measured by ORI, GI and saliva acidity. Frequency distribution of the respondent shows that mothers’ oral health behavior are good. The result of this study shows that there is a significant relationship between mothers’ behavior with ORI,
mothers’ GI, mothers’ saliva acidity and child’s GI."
2013
T35002
UI - Tesis Membership  Universitas Indonesia Library
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Budiharto
"ABSTRACT
Behavioral factor is considered to be one of the affecting factors in individual or community health status. The mother's behavior in dental health can affect her child's oral health state since children under five years of age their oral health measure still depends on their parents and they usually rely very much on their mothers.
World health Organization stated that the prevalence of gingivitis for eight and fourteen year old children should be one of the oral health indicate! s, according to the last survey conducted by the Ministry of Health in 1991. The prevalence of gingivitis in Indonesia for eight year old children: was approximately 60 % and 90 % for fourteen year old children. This condition was due to the poor oral hygiene and child's dental health behavior.
Gingivitis process starts in children under five years old and its prevalence will increase as the children grow. This condition will reach its peak in puberty, then decrease gradually. No one can be gingivitis free (Garrariza, 1984).
Preliminary studies show that dental plaque is the main causative factor of gingivitis.
Mature dental plaque produces bacterial products that can countinuously produce stimuli in gingival crevice. Gingivitis then occurs with the existence of stimuli, tow tissue endurance and high virulency of Streptococcus strains.
Dental plaque is easily formed within four hours after tooth brushing; however, it can be easily removed by conducting a proper tooth brushing technique. Dental plaque can be detected by using a colouring substance called disclosing solution or by using a pocket probe.
Health behavior can be determined as covert and overt behavior. Covert behavior concerns the knowledge and attitude toward health, and overt behavior concerns the health practice including tooth brushing.
Maternal behavior toward dental health affects the mother and her child's oral health status. In this study a concept is constructed based on previous studies to investigate the relationship among the influencing variables. The next steps are testing the hypothesis and defining the variables into operational forms that are measureable.
Questionnaires as a measurement tool to collect data are tested for their validity and reliability. The data to be collected are the behavior of the mothers using the questionnaires. Data about the children's dental plaque and gingivitis status are collected by using a clinical examination.
Objectives being observed are four year old children and their mothers in Jakarta. The sampling method is multistage cluster random sampling. The sample size is 374 and it is multiplied by two to avoid design effect. However, the sample size with inclusive criteria is only 680. Univariate, bivariate and multivariate data analysis are used by SPSS computerized statistical program.
The result of the study are described as follows. In this study, a phenomenon of the main causative factor of gingivitis of four year old children is their mothers behavioral revealed. The reason is because a four year old child's oral health measure still depends on the mother.
Generally the mothers of four year old children in Jakarta have good knowledge, attitude and practice toward oral health; however, only 0.9 % of the children are plaque free. In fact their mother's knowledge, attitude and practice toward dental health are not properly applied to maintain their children's oral health.
Two point four percents of the mothers have low education or only have completed primary school education. Eighty four point five percents have completed high school and only 13.1 % have University or college education. The mother's good education, class society which is mostly distributed in the middle and high level could enhance the implementation of a dental health education program because those mother's get information better than those with low level of education.
The mother's age ranges from 20 to 41 years old. The variability is limited because of inclusive criteria of the mothers having four year old children. In this study, the mothers who have a high level of formal education are younger than their who have lower education.
Ten point one percents of the samples are mothers with very low economic status; 22.4 % are in !ow category; 15.3 % are in fair category; 7.9 % are in high category and 24.3 % are in very high category_ A family economic status describes the family welfare and ability in supporting the family health financially.
The family size of 40.4 % samples are mothers with one to two children; 47 8 % with 3 children and 11.8 % with 4-5 children. Respondents with 3 children or less are 88.2 %. This condition indicates the success of family health planning program conducted by the government.
The children's gingivitis status
The prevalence of gingivitis in Jakarta during 1993-1994.
The prevalence of gingivitis was 46.2 % and 53.8 % was gingivitis free. This figure was lower than the previous studies conducted in Jakarta (59 %) and in Pengalengan, West Java, (61.6 %), but was higher than the survey conducted in Bandung (32.9 %). The National data about the gingivitis state of four year old children were not available; therefore, we could not make comparisson.
The level of severity of gingivitis in Jakarta are as follows : 70.7 % of four year old children in Jakarta are with mild gingivitis; 25.4 % with moderate gingivitis and 3.82 % with severe gingivitis. These figures are lower than the previous studies conducted in 1993 (92 %), and the study in Bandung (96 %) in 1992. However, the figure for moderate level of gingivitis is higher than the previous studies in Jakarta (8 °/c) and in Bandung (4 %). The prevalence of severe gingivitis in the previous studies of Bandung & Pengalengan, West Java, are not found.
Dental plaque status of the children.
Zero point nine percents of the children are free from dental plaque. Twenty percents of the children have a small amount of plaque, 44.7 % have a fair category of plaque and 34.4 % are considered to have a large amount of dental plaque.
Mother's knowledge.
Generally, the mother's have good knowledge about dental health. Four point one percents is categorized to have a low level of knowledge, 70.1 % has a good knowledge about dental health. A good knowledge about dental health is an important basis for a good behavior in dental health. Therefore, a recommendation of this study is important to increase the knowledge, attitude and practice or behavior of dental health.
Mother's attitude.
Generally, the mother's attitude toward dental health is good; 9.3 % is categorized as low; 28.6 % was fair and 52.1 % good. However, mothers with good knowledge about dental health do not always have good attitude toward dental health.
Mother's behavior
Generally, mothers have good behavior. Five point three percents of the mothers are categorized as low; 27.5 % fair and 67.2% good.
Dental health service utilization.
Generally the mothers have utilized dental health services. 2.5% of the respondents are categorized low in utilizing dental health services, 28.4 % fair and 69.1 % good. The 69.1 % of the respondents who are categorized as good utilize the dental health services mostly for curative treatment. Therefore it requires a good promotive and preventive strategies to support the quality of services.
Dental Health Education
Dental health education for mothers is generally considered insufficient; 40.3 % is categorized having very little knowledge and 38.4 % is fair. Only 21.3 % is considered to have a good knowledge about dental health.
Each independent variable contribution to gingivitis.
Mother's behavior contribution to the gingivitis in children is 73.2 %. It shows that the mother's behavior is one of the most influencing factors. One unit increase of mother's behavior will decrease the gingivitis index to 0.86 unit.
Dental plaque contribution to gingivitis is 46.7 %. Dental plaque is the main etiological cause of gingivitis. For four year old children, the presence of dental plaque is due to the mother's behavior in dental health. Other causative factor is because the mothers do not utilize the dental health service available in the community in order to maintain their children's oral health, such as gingival health and plaque control. In this study, the condition of children with a small amount of dental plaque category causes gingivitis, however children with fair category of dental plaque existence do not entirely suffer from gingivitis. Other possible factors are the quality of microorganisms in the oral cavity, the activity and quality of saliva and the gingival tissue endurance.
The mother's education level has a strong influence contributes 73.2 % to their behavior, and the higher the level of education makes it easier the mother receive information on dental health.
The mother's age seems to be a weak influence to their behavior (12.6 %). A group of mothers with high level of education has better dental health behavior than the older group.
The family size contributes 25.8 % to the mothers behavior. Fewer children their give them a chance to consentrate on her children's welfare including the their oral health.
The mother's behavior contributes 73.4% to the children's dental plaque formation. The influence is considered fair. The formation of dental plaque is caused by mother's less attantion in maintaning their children's oral health, since four year old children still depend on their mothers.
The family economic status seems to be a weak influence to the mother's behavior, which is 22.3 %. The family economic status is one of the influencing factors of the mother's behavior towards the family dental health. The higher economic status the family has, the more the family could afford and utilize the dental health services.
The influence of the utilization of dental health services to the mother's behavior is 67 %. Dental health facilities in Jakarta are considered reachable because of the good public transportation system.
Dental health education recieved by the mothers constributes 27.2 % to their behavior. The dental health education should increase the knowledge, attitude and behavior toward dental health.
Contribution of all the independent variables to the mother's behavior.
The independent variables of mother's education level, family economic status, family size, dental health service utilization and dental health education the mother received toward mother's behavior contributed are as follows:
1. The mother's education level contribution to the mother's behavior is 3.3 %.
2. The family economic status contribution to the mother's behavior is 0.7 %
3. The family size contribution to the mother's behavior is 0.7 %.
4. The dental health education that the mother has received contributes 2.1 % to the mother's behavior. The reasons why dental health education contributes low influence to the mother's behavior are :
a. The dental health education material on gingiva health is very little and does not vary very much.
b. The method of dental health education used to explain the material did not vary very much.
c. Dental health educators do not have enough skills.
Contribution of all independent variables to the children's gingival status. The independent variables of mother's behavior, dental plaque, formal education level of the mother, family economic status, dental health service utilization and dental health education to the children's gingivitis status are as follows _
1. The mother's behavior contribution to the children's gingivitis status.
a. Direct impact of the mother's behavior to the children's gingivitis is as much as 6.8%
b. Total impact of the mother's behavior to the children's gingivitis (direct impact plus indirect impact) is as much as 22.8 %.
2. Dental plaque contribution to the children's gingivitis status is 8.3%.
3. The mother's education level contribution to the children's gingivitis status is 2 %.
4. The family economic status contribution to the children's gingivits status is 4.2 %.
5. The dental health facilities utilization, contributing to the children's gingivitis status is 4.8 °/o.
6. The dental health education the mother recieved contributing to the children's gingivitis status is 2.1 %."
Depok: Fakultas Kesehatan Masyarakat Universitas Indonesia, 1998
D80
UI - Disertasi Membership  Universitas Indonesia Library
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"Penggunaan agar-agar pada produk pangan cukup luas, namun demikian masih terdapat kelemahan sifat fungsionalnya. Peningkatan sifat fungsional agar-agar dilakukan dengan penambahan berbagai jenis gum karena gum memiliki efek sinergisme dengan fikokoloid. Pada penelitian ini dibuat formulasi agar-agar dengan berbagai jenis gum yaitu gum arabik, guar gum, locust bean gum (LBG), dan konjak. Variasi rasio formula agar-agar dengan berbagai jenis gum masing-masing adalah 1:3, 1:1, dan 3:1. Sebagai pembanding digunakan agar-agar kontrol tanpa penambahan gum. Sifat fungsional yang diamati meliputi kekuatan gel, elastisitas, sineresis, viskositas, titik leleh, dan titik gel. Hasil penelitian menunjukkan bahwa, penambahan LBG dan konjak berpengaruh nyata terhadap peningkatan kekuatan gel agar-agar. LBG dan konjak memiliki efek sinergis dalam meningkatkan kekuatan gel. Kekuatan gel agar-agar meningkat dari 493 g/cm2 menjadi 2011 g/cm2 pada penambahan konjak rasio 1:1 dan menjadi 864 g/cm2 pada penambahan LBG ratio 1:1. Elastisitas gel agar-agar meningkat dari 45 mm menjadi 47,90 mm pada penambahan guar gum rasio 3:1. Penambahan guar gum, LBG, dan konjak berpengaruh nyata terhadap peningkatan viskositas agar-agar. Guar gum, LBG, dan konjak memiliki efek sinergis dalam meningkatkan viskositas. Viskositas agar-agar meningkat dari 101 cPs menjadi 1880 cPs pada penambahan guar gum rasio 1:3, menjadi 1610 cPs dengan LBG rasio 1:3 dan menjadi 5380 cPs dengan konjak rasio 1:3. Titik leleh menu run dari 56°C menjadi 48°C pada penambahan gum arabik rasio 1:3."
620 JPBK 6:1 (2011)
Artikel Jurnal  Universitas Indonesia Library
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