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Jurnal Penelitian Saintek

saintek
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Published by Universitas Negeri Yogyakarta

ISSN : 14123991 EISSN : 25287036 DOI : 10.21831

Core Subject : Science,

Decision Sciences, Operations Research & Management

Arjuna Subject : -

Articles 286 Documents

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MICROALBUMINURIA ON DIABETES PATIENTS MELLITUS TYPE 2 HYPERTENSIVE Evy Yulianti
Jurnal Penelitian Saintek Vol 14, No 1: April 2009
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Diabetes mellitus (DM) is a metabolic aberration that can cause some complications, including the occurrence of diabetic nephrophaty (DN). Patients with type 2 DM usually have hypertension likely to double compared to the non-DM patients. Prevalence of hypertension is usually greater in patients with type 2 DM with increased albumin in their urine. Data estimate that microalbuminuria is a value as the index of vaskuler damage, especially in the DM and hypertension. The objective of this research is to investigate microalbumin in type 2 DM patients normotensif and type 2 DM patients hypertensif and assess the influence of blood pressure as risk factors in the occurrence of DN in type 2 DM patients. Subjects of this study are 87 people with type 2 DM normotensif and hipertensif consisting of 54 ND patients and 33 non ND. Microalbumin is measured with the dipstick microalbumin and blood pressure with a sphygmomanometer. The comparison between the control group who examined was showed with X2 with two degrees of freedom with significance level (alpha) 0.05 and odds ratio calculation is done. Results obtained in this research is people with type 2 DM hypertensif have a higher frequency in the DN group (67.3%) compared to the non-DN (p = 0.043) with OR = 2.64. Conclusion of this research is the positive result of the microalbumin examination is bigger in the people with type 2 DM hypertensif and hypertension is a risk factor for occurrence of ND in type 2 DM patients

THE MECHANICAL COMPONENTS WEAR LEVEL TEST USING THE THIN LAYER ACTIVATION TECHNIQUE Silakhudin Silakhudin
Jurnal Penelitian Saintek Vol 20, No 2: Oktober 2015
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study discusses about the thin layer activation technique to test the mechanical components wear level. The results of preliminary experimental techniques are presented. The experimental results of the technique by using a motorcycle ring samples showed that the accuracy of measurement of the wear is 8 mg. This means that it will be less precise for testing the lightweight components. It will be more eligible to the component that the weight is more than 220 g. The prospect of developing the technique was also discussed; the result is that this technique would be appropriate to be developed at the DECY-13 cyclotron facility that will soon be constructed in BATAN.

TRANSISI FASA TITATNIUM OKSIDA MELALUI KONDENSASI EX-SITU HIDROGEN TITANAT TIPE STRUKTUR LEPIDOKSROSIT Hari Sutrisno; Sunarto Sunarto
Jurnal Penelitian Saintek Vol 15, No 1: April 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The objectives of the research are to study of the structure type of titanium dioxide (TiO2) obtained form the ex-situ condensation of hydrated hydrogen titanates with the structure type of lepidocrocite. Hydrated hydrogen titanates were obtained by ion exchabge of H+ for Cs+ in cesium titanates by 1 M HCl solution by Chimie Douce method. The results show that TiO2 (B), anatase, and anatase-rutile mixture were obtained heat treatment of hydrated hydrogen titanate at 100, 200, 300, 500, and 600oc respectively. The powders were characterized by X-rays diffractometer (XRD), High Resolution Scanning Electron Microscopy (HRSEM) and High Resolution Transmission Electron Microscopy (HRTEM). The research indicated that the protonic titanate, H0.54 Ti1.865 0.135O4 0.5H2O ( =vacancy), lost the interlayer water by being heated up to 200oC to produce a dehydrated phase, H0.54 Ti1.865 0.135O4. Above 300oC, the dehydrated phase completely transformed to TiO2(B) and anatase was obtained as pure phase at 600oC. The phase transformed as the following process: H0.54Ti1.865 0.135O4 0.5H2O à H0.54Ti1.865 0.135O4 0.25H2Oà H0.54Ti1.865 0.135O4 à TiO2(B) à TiO2-anatase.

THE SYNTHESIS OF CINNAMYL BENZOATE THROUGH ESTERIFICATION REACTION BETWEEN BENZOYL CHLORIDE AND CINNAMYL ALCOHOL REDUCED 96 FROM CINNAMALDEHYDE Maghisya Oktanni; Cornelia - Budimarwanti
Jurnal Penelitian Saintek Vol 21, No 2: Oktober 2016
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study was aimed at synthesizing cinnamyl benzoate through esteriﬁ cation reaction between benzoyl chloride and cinnamyl alcohol reduces from cinnamaldehyde. This study was started by reducing cinnamaldehyde to cinnamyl alcohol using NaBH4 reductor at room temperature. The reduction product of cinnamaldehyde was reacted using benzoyl chloride through esteriﬁ cation reaction using pyridine at room temperature for 4 hours. The product of cinnamaldehyde reduction and esteriﬁ cation reaction were characterized using TLC, IR spectrometer, and GCMS spectrometer.The results show that the reduction of cinnamladehyde produced yellow liquor that contain cinnamyl alcohol contained 81.31% and 63.94% randemen. While the result of esteriﬁ cation reaction between benzoyl chloride and cinnamyl alcohol produced brown liquor that contained cinnamyl benzoate contained 12.44% and 5.78% randemen.

Cytotoxic Effects of Plant Growth Extracts Temu Giring (Curcuma Heyneana) and Temu Ireng (Curcuma Aeruginosa) against Several Cancer Cells Sri Atun; Nurfina Aznam; Retno Arianingrum; Sri Nurestri
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The purpose of this study is to investigate the cytotoxic activity of extracts and fractions of the rhizoma from temu giring and temu ireng against some cancer cells, such as breast carcinoma cells (MCF-7) and cervical carcinoma (Ca Ski). The research method is to do with experiments in the laboratory which includes extraction and fractionation of compounds from the rhizome from temu giring and temu ireng, test the cytotoxicity against cancer cells Breast carcinoma (MCF-7) and cervical carcinoma (Ca Ski). Test results on the activity of extracts and fractions from tubers from temu giring and temu ireng on breast carcinoma (MCF-7); Cervical carcinoma (Ca Ski) showed good activity (below 100 µg/ml), except the methanol extract temu ireng which shows the IC50 upper of 100 µg/ml. This indicates that the extracts from temu giring and temu ireng great potential for development as anticancer drug.Keywoods: Curcuma heyneana; Curcuma aeroginosa; cytotoxic effect; anticancer

SYNTHESIS AND PERFORMANCE TEST OF CO-EEGDMA AS A CARRIER IN PHENOL TRANSPORT USING POLYMER INCLUSION MEMBRANE Agung Abadi Kiswandono
Jurnal Penelitian Saintek Vol 22, No 2: Oktober 2017
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study was aimed to synthesize the polymer as a carrier, i.e. copolymer (Eugenol-ethylene glycol dimethacrylate, EGDMA) or co-EEGDMA. The synthesis involving eugenol and EGDMA as a crosslinking agent was performed by polymerization using a boron trifl uoro diethyl ether catalyst. The synthesized polymer was then characterized using FTIR, SEM and H-NMR. Co-EEGDMA and two other compounds, namely polyvinyl chloride (PVC) and dibenzyl ether (DBE) as the components in the membrane making process were tested to be used for phenol transport. The components then were tested using Polymer Inclusion Membrane (PIM) method. The characterization results of co-EEGDMA show that eugenol polymerization using EGDMA crosslinking agent has been successfully synthesized. The results also show that the membrane containing the new compounds can be used for phenol transport in multiple times.

CONSERVATION OF NATURAL ENEMY AS A BIOLOGICAL CONTROL WITH FISHING ECOSYSTEM MANAGEMENT Victoria Henuhili; Tien Aminatun
Jurnal Penelitian Saintek Vol 18, No 2: Oktober 2013
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This research aims were to collect the diversity of natural enemies lived in rice agroecosystem and to observe which management system of rice agroecosystem can conserve natural enemies.There were two kinds of rice agroecosystem observed in this research, multicropping system (surjan system) and monocropping system (non surjan system). There were two parts of surjan fields, aquatic lower part planted with rice and terrestrial higher part planted with vegetables. The surjan fields were different from non surjan fields that were planted with rice only. Non surjan fields were had one part, that was aquatic part. Natural enemies collecting of surjan fields and non surjan fields was done to get conclusion that which system conserved natural enemies more. This researh results were : (1) Surjan fields had more kinds of natural enemies than non surjan fields; (2) The management system of rice agroecosystem that conserved natural enemies more was multicropping system in surjan fields.

THE EFFECT OF GENOTYPE QUALITY OF UNPAD SWEET CORN SEEDS TOWARDS ITS PHYSIOLOGICAL QUALITY Niki Rahayu; Anne Nuraini; Sumadi Sumadi
Jurnal Penelitian Saintek Vol 23, No 2: Oktober 2018
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study was aimed at determining the effect of genotype quality of Unpad sweet corn seeds on physiological quality after four months of storage. The experimental design used was a completely randomized design with a treatment factor of 16 genotypes of sweet corn with 2 replications. The data were analyzed using the F test, if there was a significant difference in Scott Knott’s test at the level of 5%. All of the seed genotypes had different qualities, so there was a significant difference in 100 grain weight parameters, germination and simultaneous growth based on ANOVA test. Seeds that had good initial physical quality are able to maintain quality until the end of storage period. After the storage period there is the best genotype, namely with code 613 which is able to maintain its physical-physiological quality until the end of storage. Based on the results of the study, it can be concluded that the genotype of sweet corn seed npad Genotype 613 (P5 x P1 (x) (3)) has good physical and physiological qualities and can be used as a candidate for hybrid elders. This is seen from the quality of seeds that meet the requirements of quality seed characters from 100 grain weight parameters and germination.PENGARUH MUTU GENOTIP BENIH JAGUNG MANIS UNPAD TERHADAP MUTU FISIOLOGISPenelitian ini bertujuan untuk mengetahui pengaruh mutu genotip benih jagung manis Unpad terhadap mutu fisiologis setelah empat bulan penyimpanan. Rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap dengan faktor perlakuan 16 genotipe jagung manis dengan 2 ulangan. Data dianalisis menggunakan uji F, apabila terdapat perbedaan yang signifikan dilakukan uji lanjut Scott Knott taraf 5 %.Semua genotip benih memiliki mutu yang berbeda, sehingga terdapat perbedaan yang signifikan pada parameter bobot 100 butir, daya berkecambah dan keserempakan tumbuh berdasarkan uji anova. Benih yang memiliki mutu fisik awal yang baik mampu mempertahankan mutu sampai periode akhir penyimpanan. Setelah periode simpan terdapat genotip terbaik yaitu dengan kode 613 yang mampu mempertahankan mutu fisik-fisiologisnya sampai akhir penyimpanan. Berdasarkan hasil penelitian dapat diambil kesimpulan bahwa genotip benih jagung manis Unpad Genotip 613 (P5 x P1 (x) (3)) memiliki mutu fisik dan fisiologis yang baik dan dapat dijadikan sebagai calon tetua hibrida. Hal ini dilihat dari kualitas benih yang memenuhi syarat karakter benih bermutu dari parameter bobot 100 butir dan daya berkecambah.

LANTANUM COMPLEXASI STUDY WITH MAKROSIKLIS COMPOUND AND CHARACTERIZATION AS SELECTIVE ELECTRONIC ION LANTANUM Suyanta Suyanta; Sunarto Sunarto; Lis Permana Sari
Jurnal Penelitian Saintek Vol 16, No 2: Oktober 2011
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The aim of this research are (1) to study the complexation constant of La(III) ion by N,N’-dikarboksimetildiaza-18-crown-6 ligant with difference concentration of KNO3, and (2) to study the lanthanum (III) ion selective electrode (La-ISE) potential response which follows the Nernst equation. The characters of the electrode studied are: response time, life time, detection limit, dynamic range and selectivity. The complexation constant of La(III) ion by N,N’- dikarboksimetildiaza-18-crown-6 ligant are finded by potentiometry titration with 0.0005 M, 0.001 M, dan 0.005 M KNO3 supported electrolite. The titration are doing by 0.00794 M KOH until pH 7. The result of constant complexation (Kf) La(III) ion with N,N’-dikarboksimetildiaza-18-crown-6 difference KNO3 0.005 M, 0.001 M, dan 0.005 M simultaniuesly are 101,02 , 101,12, dan 101,32. The electrode had a response time of 27.14 ± 4.79 seconds and could be used for 50 days. The linear range was between 10-5 M to 10-1 M and the detection limit is 3.92x10-6 M.

THE EFFECT OF MICRO PARTICLE STEEL SLAG ON P-RETENTION AND PH ON ANDISOL Ai Ening Rostini; Rina Devnita; Oviyanti Mulyani; Benny Joy
Jurnal Penelitian Saintek Vol 24, No 2: Oktober 2019
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

This study was aimed at determining the effect of microparticles steel slag towards P retention, soil acidity in Andisol from Ciater, West Java. The research was conducted in November 2017 until January 2018. The andisol was taken from the PTPN XIII-Ciater Tea Plantation, Subang, while steel slag was obtained from PT. Krakatau Steel Indonesia. The study used a Completely Randomized Design consisting of 11 treatments and 3 replications so that the total of all treatments was 33 experimental polybags. The treatments given were 500 mesh steel slag and 1.7 µm steel slag. The incubation media were stored in the Soil Physics Laboratory of the Faculty of Agriculture at UNPAD for 2 months. The observed parameters were P retention analyzed by the Blakemore method and soil pH which was analyzed by the electrometry method. The results show that the steel slag microparticles significantly affected the reduction in P retention and increased pH in Andisols. The best dose for increasing the pH is 7%. Steel slag with a size of 1.7 µm is able to increase the pH from 4.53 to 7.99 after a two-month incubation.PENGARUH PARTIKEL MIKRO TERAK BAJA TERHADAP RETENSI P DAN PH PADA ANDISOLPenelitian ini bertujuan untuk mengetahui pengaruh pemberian partikel mikro terak baja terhadap retensi P, kemasaman tanah pada Andisol asal Ciater, Jawa Barat. Penelitian telah dilaksanakan pada bulan November 2017 sampai dengan Januari 2018. Andisol berasal dari Perkebunan Teh PTPN XIII-Ciater, Kabupaten Subang, sedangkan terak baja diperoleh dari PT. Krakatau Steel Indonesia. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap yang terdiri dari 11 perlakuan dan 3 ulangan, sehingga total seluruh perlakuan adalah 33 polibeg percobaan. Perlakuan yang diberikan yaitu kontrol, terak baja ukuran 500 mesh dan terak baja ukuran 1,7 µm. Media inkubasi disimpan di Laboratorium Fisika Tanah Fakultas Pertanian UNPAD dan diinkubasikan selama 2 bulan.Parameter yang diamati adalah Retensi P dianalisis dengan metode Blakemore, dan pH tanah dianalisis dengan metode elektrometri.Hasil penelitian menunjukkan bahwa pemberian partikel mikro terak baja berpengaruh nyata terhadap penurunan retensi P dan peningkatan pH pada Andisol asal Ciater, Jawa Barat. Sedangkan dosis terbaik dalam meningkatkan pH yakni 7% terak baja dengan ukuran 1,7 µm mampu meningkatkan pH dari 4,53 menjadi 7,99 setelah dua bulan inkubasi.

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