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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Spektra R.E.M (Rekyasa Energi Manufaktur) Jurnal Proceeding - Sari Mutiara Indonesia International Conference on Health JFIOnline IMPROVEMENT: Jurnal Ilmiah untuk peningkatan mutu manajemen pendidikan Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Best Journal (Biology Education, Sains and Technology) Kinetika Frontiers Jurnal Kesehatan Tambusai Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan Manfish Journal Jurnal Informatika Ekonomi Bisnis JURNAL ILMU DAN TEKNOLOGI PERIKANAN TANGKAP Entrepreneurship and Community Development
Heru Santoso
Sentra Teknologi Polimer – Badan Pengkajian dan Penerapan Teknologi, Gedung 460 Kawasan Puspiptek Serpong Tangerang Selatan 15314
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Transportation

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EFEK PENAMBAHAN NANOCLAY TERHADAP SIFAT MEKANIK DARI BLENDING PET/PP Santoso, Heru; Dwigustono, Gatot
Jurnal Spektra Vol 16, No 1 (2015): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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Abstract

AbstrakDengan berkembangnya kemampuan rekayasa material, polimer blend menjadi salah satu metode untuk merekayasa material polimer yang cukup penting karena aplikasinya yang cukup luas. Dalam penelitian ini telah dilakukan proses blending (pencampuran) antara material polimer polietilena tereftalat (PET) dengan polipropilena (PP) dengan bantuan kompatibilizer PP-g-MA. Proses pencampuran menggunakan mesin ekstrusi jenis single screw dengan setting parameter suhu 210oC, 230oC, 265oC dan 275oC pada putaran 50 rpm. Pengaruh penambahan nano pada sistem campuran PET/PP/PP-g-MA terhadap sifat mekanik dilakukan dengan menambahkan nanoclay dengan konsentrasi 1, 3, 5, 7 dan 10 % (rasio berat). Hasil pencampuran PET/PP/PP-g-MA dan penambahan nanoclay dikarakterisasi sifat mekaniknya yaitu tensile strength, impact strength dan sifat termalnya dengan DSC, TGA serta morfologinya dengan SEM. Pada penelitian ini didapatkan nilai optimal dari penambahan kompatibilizer PP-g-MA pada konsentrasi 7% (rasio berat) dengan nilai kuat tarik sebesar 29,25 MPa. Penambahan nanoclay dalam sistem campuran PET/PP/PP-g-MA pada konsentrasi 7 % (rasio berat) berpengaruh terhadap sifat mekanik, termal dan sifat morfologinya. Semakin besar penggunaan nanoclay menyebabkan sifat E-modulus meningkat, kuat tarik menurun, elongasi menurun dan kekuatan impak juga menurun. Kekuatan mekanik terbesar dicapai pada penambahan nano nanoclay 1 % (rasio berat) dan nilai E-modulus terbesar pada penggunaan nano nanoclay 10% (rasio berat). Sifat termal pada penambahan nano clay didapatkan kecenderungan meningkatkan kestabilan termal dan menurunnya derajat kristalinitas PP campuran PET/PP/PP-g-MA/nanoclay. AbstractAdvancement of material engineering makes polymer blend as an important polymer material engineering method among other methods because of its wide applications. In this research, blending between polyethylene terephthalate (PET) and polypropylene (PP) polymer materials using compatibilizer PP-g-MA was produced. Single-screw extrusion machine with temperature parameters of  210oC, 230oC, 265oC and 275oC at 50 rpm was used during mixing process. The influence of nano supplementation on mixture system of PET/PP/PP-g-MA on mechanical properties was carried out by adding nano clay of 1, 3, 5, 7 and 10% (weight ratio). The mixing result of PET/PP/PP-g-MA and supplementation of nano clay was characterized mechanically (tensile strength, impact strength), thermally (DSC, TGA), and morphologically (SEM). Optimal value of compatibilizer PP-g-MA supplementation was obtained at concentration of 7% (weight ratio) with tensile strength of 29.25 MPa. Supplementation of nano clay into the system of 7% (weight ratio) influenced their mechanical, thermal, and morphological properties. The higher the ratio of nano clay, the higher the E-modulus property, the lower the tensile strength, the lower the elongation, and the lower the impact strength. The highest mechanical strength was obtained at nano clay supplementation of 1% (weight ratio) and the highest E-modulus value was obtained at nano clay supplementation of 10% (weight ratio). Thermal properties of nano supplementation tends to increase thermal stability and decrease crystallinity of PP mixed with PET/PP/PP-g-MA/nano clay.Keywords: blending PET/PP, compatibilizer PP-g-MA, single screw extrusion, nano clay.
Ekspresi dan Kadar GABA pada Palatum Sekunder Mencit Prenatal dengan Paparan Diazepam di Periode Organogenesis Yulia, Rika; Kuntoro, Kuntoro; Santoso, Heru; Darmanto, Wim
JFIOnline | Print ISSN 1412-1107 | e-ISSN 2355-696X Vol 7, No 4 (2015)
Publisher : Indonesian Research Gateway

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Abstract

Penelitian ini bertujuan menganalisis perubahan ekspresi dan kadar Neurotransmitter Gamma-aminobutyric acid (GABA) pada palatum mencit prenatal, yang terpapar diazepam di periode organogenesis. Paparan diazepam di periode organogenesis menyebabkan tidak terjadinya penyatuan lempeng palatum  sehingga terjadi celah palatum. GABA berperan dalam pembentukkan palatum. Duapuluh tujuh (27) ekor mencit (Mus musculus) betina, bunting, yang sudah diketahui umur dan berat badannya digunakan dalam penelitian ini. hewan coba dibagi menjadi tiga (3) kelompok : kelompok kontrol, diberi aquades, kelompok uji I diberi injeksi diazepam 8 mg/kg/BB dan kelompok uji II diberi injeksi diazepam 16 mg/kg/BB setiap hari. Pemberian secara intraperitonial di periode organogénesis, yaitu gestasi hari ke 9 sampai 15. Hasil pemeriksaan imunohistokimia, tidak terjadi peningkatan jumlah sel yang mengekspresikan GABA, tapi pemeriksaan kadar menggunakan Elisa Reader, memperlihatkan terjadinya peningkatan kadar GABA pada kelompok uji. Análisis hasil menunjukkan bahwa paparan diazepam di periode organogénesis menyebabkan terjadinya peningkatan kadar GABA jaringan palatum pada mencit prenatal yang mengalami celah palatum.
Correlating Factors to Adolescent Sexual Behavior at SMP Negeri X Medan Belawan 2018 Sinaga, Mariana; Santoso, Heru; Sinaga, Lia Rosa Veronika
Proceeding - Sari Mutiara Indonesia International Conference on Health Vol 1 No 1 (2018): Sari Mutiara Indonesia International Conference on Health
Publisher : Sari Mutiara Indonesia University Press

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Abstract

Sexual behavior is the behavior which is stimulated by sexual desire with the opposite sex or with same sex.it is started from the feeling of attraction to a date, holding hands,embracing,touching parts of the body,patting,oral sex,masturbation,kissing, and committing sexual intercouse among adolescents.These are correlated with same factors such as knowledge,self-control,parents’ Role,peers’Role, and information media. The objective of this research was to find out some factors which were correlated with adolescent’ sexual behavior at SMP Negeri X , Medan Belawan,in 2018. The research used quantitative method with cross sectional design. The samples were 85 respondents,taken by using purposive random sampling technique. The data were gathered by using questionnaires and analyzed by using univariate analysis and bivariate analysis with Chi Square test with interval confidence (CI=95%) and the confidence level of =0.05. The result of the research showed that there was the correlation of knowledge (p=0.001),parents’role (p=0.001),self-control (p=0.001),and information media (p=0.004) with adolescents’sexual behavior at SMP Negeri X,Medan Belawan .It is recommended that parents not consider sexual education as taboo for their children; on the other hand,it is very useful for them.Adolescents should be wise in using information media and avoid the exposure to pornography from peers who like to persuade to commit sexual act. Therefore, the school management and teachers should prevent the students from sexual behavior by providing education on sex so that adoslescents can have sel-control in preventing from sexual behavior.
Factors Affecting the Event of The Mioma Uteri in Aceh Tamiang District Year 2018 Martina, Martina; Santoso, Heru; Resti, Suci Nanda
Proceeding - Sari Mutiara Indonesia International Conference on Health Vol 1 No 1 (2018): Sari Mutiara Indonesia International Conference on Health
Publisher : Sari Mutiara Indonesia University Press

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Abstract

Myoma is a reproductive disease which contributes to mortality score of women besides of pregnancy problem and childbearing in the reproductive period of women. Prevalence of myoma is 25-50% of mortality score. This disease is in the second level of mortality score after cervical cancer disease. There are many risk factors of myoma disease and we can anticipate it to minimize the death because of myoma disease. This research aims to know the faktors which influence Uterine Myoma disease at RSUD Aceh Tamiang. Kind of this research is descriptive analysis research. In this research, the Researcher used cross sectional design. Moreover, the researcher took the respondent as many as 34 people. The researcer used the questionnaires to collect the data started from 20 until 30 July 2018 at RSUD Aceh Tamiang. The result of the hypothesis showed us the influence of historical age (p=0,012), the parity (p=0,029), and the historical family (p=0,024) toward myoma disease but it did not related to the menarche factors (p=0,308), the body mass index (p=0,283), the diet pattern (p=0,500), the menstrual status (p=0,605), the historical contraception (p=0,313) toward myoma disease at RSUD Aceh Tamiang. The researcher proposes this research to be the information to maximize the services, facilities, and to expand the knowledge in education.
Ekspresi dan Kadar GABA pada Palatum Sekunder Mencit Prenatal dengan Paparan Diazepam di Periode Organogenesis Yulia, Rika; Kuntoro, Kuntoro; Santoso, Heru; Darmanto, Wim
Jurnal Farmasi Indonesia Vol 7, No 4 (2015)
Publisher : Jurnal Farmasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35617/jfi.v7i4.213

Abstract

Penelitian ini bertujuan menganalisis perubahan ekspresi dan kadar Neurotransmitter Gamma-aminobutyric acid (GABA) pada palatum mencit prenatal, yang terpapar diazepam di periode organogenesis. Paparan diazepam di periode organogenesis menyebabkan tidak terjadinya penyatuan lempeng palatum  sehingga terjadi celah palatum. GABA berperan dalam pembentukkan palatum. Duapuluh tujuh (27) ekor mencit (Mus musculus) betina, bunting, yang sudah diketahui umur dan berat badannya digunakan dalam penelitian ini. hewan coba dibagi menjadi tiga (3) kelompok : kelompok kontrol, diberi aquades, kelompok uji I diberi injeksi diazepam 8 mg/kg/BB dan kelompok uji II diberi injeksi diazepam 16 mg/kg/BB setiap hari. Pemberian secara intraperitonial di periode organogénesis, yaitu gestasi hari ke 9 sampai 15. Hasil pemeriksaan imunohistokimia, tidak terjadi peningkatan jumlah sel yang mengekspresikan GABA, tapi pemeriksaan kadar menggunakan Elisa Reader, memperlihatkan terjadinya peningkatan kadar GABA pada kelompok uji. Análisis hasil menunjukkan bahwa paparan diazepam di periode organogénesis menyebabkan terjadinya peningkatan kadar GABA jaringan palatum pada mencit prenatal yang mengalami celah palatum.
USING OF STRAW ASH AS ADDITIVE MATERIAL CEMENT Junaidi, Robert; S.T.,M.T., Zulkarnain; Santoso, Heru
KINETIKA Vol 3, No 3 (2012): KINETIKA 01112012
Publisher : Teknik Kimia Politeknik Negeri Sriwijaya

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Abstract

In this research, Portland cement type 1 made by using raw material clinker and gypsum from production unit in cement plant and also with adding straw ash from the combustion of straw rice plant, the adding of straw ash performed on a particular composition which is 0%, 5%, 8%, 12% and 15%. The purpose of the research is to know the effect of adding straw ash opposite the quality of Portland cement type 1 and to know about the best composition of adding straw ash to get Portland cement type 1 according with SNI-15-2049-2004. The benefits of the research are to reduce the level of environmental pollution and to increase the value of straw rice plant. Portland cement type 1 that has been created will be done some analysis to determine the quality of the cement, such as cement chemical composition analysis using X-Ray spectrometer, determination of free lime, determination of lost on ignition, determination of Blaine and determination of compressive strength mortar. So hoping the Portland cement type 1 that has been created is according SNI 15-2049-2009.  The result of the research show that the all of adding straw ash is got cement with compressive strength, free lime disposal, loss on ignition disposal, and Blaine of cement according with SNI 15-2049-2009 with the maximum adding of the straw ash is 15 % where at this adding straw ash is got compressive strength equal 476 Kg/cm2, free lime equal 1, 01 %, loss on ignition equal 2, 78 %, and Blaine equal 6125 cm2/gr.
Evapotranspiration of Indonesia Tropical Area Marganingrum, Dyah; Santoso, Heru
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 16, No 3 (2019): November 2019
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (504.261 KB) | DOI: 10.14710/presipitasi.v16i3.106-116

Abstract

Indonesia is an archipelago country with a tropical climate. The region of Indonesia is quite large and located between two continents (Asia and Australia) and between two oceans (Indian and Pacific), making the territory of Indonesia has a unique climate pattern. One of the climate variables that quite important to be studied in this chapter is evapotranspiration. The Thornthwaite method was used to estimate potential evapotranspiration based on average air temperature. The relationships between evapotranspiration, precipitation, and elevation were then examined. Besides, temperature variations that affect climate patterns between monsoonal and equatorial regions were compared, between the mainland and small islands, and between mountain and coastal area. The impact of global warming was also examined on the climate and potential evapotranspiration of the Indonesian region. Data analysis showed that evapotranspiration correlates weakly with precipitation, and the contrary, the evapotranspiration correlates strongly with elevation, with correlation indices of 0.02 and 0.89, respectively. The study confirmed that air temperature is the primary controlling variable of the evapotranspiration in this very heterogeneous landscape. Under a global temperature increase of 1.5 °C above the pre-industrialized year (1765), the evapotranspiration is expected to increase in a range from 4.8 to 11.1%. In general, the excess of water to restore soil moisture in the future tends to decrease, i.e., drier.
STRATEGI PENGEMBANGAN PELABUHAN PERIKANAN DAGHO Santoso, Heru; Asia, Asia; Hamel, Samuel; Manohas, Jul; Arifi, Muhammad Zainul
FRONTIERS: JURNAL SAINS DAN TEKNOLOGI Vol 1, No 3 (2018): DESEMBER 2018
Publisher : Universitas Negeri Manado

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Abstract

Dagho Beach Fishing Port yang terletak di Distrik Tamako, Pulau Sangihe, Sulawesi Utara .. akhir-akhir ini telah terjadi penurunan aktivitas dagho fishing port. Tujuan penelitian ini adalah untuk mengetahui kondisi sumber daya manusia dagho, fasilitas utama dagho fishing port, fasilitas fungsional dan fasilitas pendukung yang mendukung pengembangan dagho fishing port dan untuk menentukan strategi pengembangan pelabuhan dagho fising. Penelitian ini dilaksanakan pada 17 Juli hingga 10 November 2017. Data diperoleh dengan mewawancarai stakeholder dan dianalisis menggunakan SWOT. Penelitian ini menunjukkan bahwa ada banyak hal yang dapat dilakukan untuk memperoleh perkembangan dagho yang maksimal seperti dengan menambahkan fasilitas dermaga halaman, navigasi selestial, layanan komunikasi (telepon, internet dan komunikasi radio).Kata kunci: Pelabuhan Dagho, Pengembangan, SWOT
FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN KONSUMSI TABLET TAMBAH DARAH PADA IBU NIFAS DI WILAYAH KERJA PUSKESMAS MUTIARA BARAT TAHUN 2019 Fatmini, Fatmini; Santoso, Heru; Manurung, Kesaktian; Rosdiana, Rosdiana
Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Vol 4, No 2 (2020): Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan
Publisher : Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmstkik.v4i2.5377

Abstract

Anemia is still a problem in the world, especially in developing countries. This condition can have a detrimental impact on every age group including pregnant women. In pregnant women, anemia can cause complications for the mother and the baby she is carrying, such as life-threatening bleeding, miscarriage, low birth weight and premature birth. The purpose of this study was to determine the relationship between parity, anemia, ANC visits, nutritional status and the role of health workers with the consumption of blood-added tablets in post-partum mothers in the work area of the Mutiara Barat Health Center in 2019. This type of research is a correlation analytic study with cross-sectional method. The population in this study were all pregnant women in the third trimester who were recorded at the Mutiara Barat Health Center in January 2019 as many as 139 people and the sample was the total population of 139 respondents. Data were analyzed using the chi square statistical test which includes univariate, bivariate and multivariate analysis. The results obtained: there is a relationship between parity (p = 0.000), anemia (p = 0.016), ANC visits (p = 0.015), nutritional status (p = 0.021) and the role of officers (p = 0.000) with the consumption of tablets with blood added at postpartum mother. The dominant factor related to the consumption of blood-added tablets is the role of the officer. From the research results obtained, it is hoped that the Puskesmas can increase the knowledge of mothers about blood supplemented tablets through counseling so that it can influence the attitude of pregnant women to consume blood supplemented tablets. Keywords: ANC visit; anemia; consumption of blood added tablets; nutritional status; parity; role of officers ABSTRAKAnemia masih menjadi permasalahan di dunia terutama di negara-negara berkembang. Kondisi ini dapat memberikan dampak merugikan di setiap kelompok umur termasuk ibu hamil. Pada ibu hamil, kejadian anemia dapat menyebabkan penyulit pada ibu maupun bayi yang dikandungnya seperti perdarahan yang mengancam jiwa, keguguran, berat badan bayi lahir rendah dan kelahiran prematur. Tujuan dari penelitian ini adalah untuk mengetahui hubungan faktor paritas, anemia, kunjugan ANC, status gizi dan peran petugas kesehatan dengankonsumsi tablet tambah darah pada ibu nifas di wilayah kerja Puskesmas Mutiara Barat tahun 2019. Jenis penelitian ini adalah penelitian analitik korelasi dengan metode cross sectional. Populasi dalam penelitian ini adalah seluruh ibu hamil trimester III yang terdata di Puskesmas Mutiara Barat pada bulan Januari 2019 sebanyak 139 orang dan sampel merupakan total populasi yaitu 139 responden. Data dianalisis menggunakan uji statistik chi square yang meliputi analisis univariat, bivariat dan multivariat. Hasil penelitian diperoleh: ada hubungan antara paritas (p=0,000), anemia (p=0,016), kunjungan ANC (p=0,015), status gizi (p=0,021) dan peran petugas(p=0,000) dengan konsumsi tablet tambah darah pada ibu nifas. Faktor yang dominan berhubungan dengan konsumsi tablet tambah darah adalah peran petugas. Dari hasil penelitian yang diperoleh diharapkan Puskesmas dapat meningkatkan pengetahuan ibu tentang tablet tambah darah melalui penyuluhan sehingga dapat mempengaruhi sikap para ibu hamil untuk berperilaku mengkonsumsi tablet tambah darah. 
Trend of Halmahera Eddy and Mindanao Eddy Martono, Martono; Santoso, Heru; Nurlatifah, Amalia; Felix, Mark Jayson
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 2 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.2.261-272

Abstract

Global warming, due to increasing greenhouse gases, has increased the frequency of El Niño Southern Oscillation events and influenced ocean dynamics. This research determined the trends of Mindanao Eddy’s and Halmahera Eddy’s over 28 years (1993–2020). The data used in this research consist of sea surface currents, surface wind, sea surface height, and NIŇO3.4 index. Determination of eddy currents was done using the Automated Eddies Detection method. The results showed that the Asian-Australian monsoon and El Niño Southern Oscillation events influence the characteristics of the Mindanao Eddy and Halmahera Eddy. During the Asian monsoon, the position of the Mindanao Eddy and Halmahera Eddy shifts southward, while during the Australian monsoon, it shifts northward. During El Niño, the position of the Mindanao Eddy turns eastward with a smaller diameter, but the position of the Halmahera Eddy does not shift. Conversely, during La Niña, the position of the Halmahera Eddy turns northwestward with a smaller diameter, while the position of the Mindanao Eddy remains unchanged. The shift of the Mindanao Eddy during the El Niño event is closely related to the weakening of the North Equatorial Current and the strengthening of the North Equatorial Countercurrent. On the other hand, the shift of the Halmahera Eddy during the La Niña event is related to the strengthening of the South Equatorial Current as a source of water masses for the New Guinea Coastal Current. The velocity of the Mindanao Eddy and Halmahera Eddy experienced an increasing trend in 1993-2020.
Co-Authors Antou, Lusje D. Arifi, Muhammad Zainul Asia, Asia Ayu Zahra Chandrasari Cantari, Ayunda Astha Darmanto, Wim Darmanto, Wim Dyah Marganingrum Elsari Tanjung Putri Fahruddin, A'rasy Fatmini, Fatmini Felix, Mark Jayson Frida Lina Tarigan, Frida Lina Gatot Dwigustono, Gatot Hamel, Samuel Karyanto Karyanto, Karyanto Katili, Lidya Komarudin, Udin Kuntoro Kuntoro Lina, Frida Mahufi, Efi Noferya Manengkey, Jenny I Manohas, Jul Manurung, Kesaktian Martina Martina Martoni Martono Martono Mohammad Akbar, Mohammad Muhammad Musrianton Mutia, Lany Nababan, Donal Nurhattati Nurlatifah, Amalia Perangin-Angin, Magraniy Pontoh, Peggy Prasetia, Adhita Pulungan, Na'imah R.Kintoko Rochadi Ramadhani, Ahijrah Resti, Suci Nanda Rika Yulia Robert Junaidi Rosdiana Rosdiana Sahari, Sariamin Saranga, Rudi Sembiring, Rinawati Simau, Silvester Sinaga, Lia Rosa Veronika Sinaga, Mariana Sinaga, Taruli Rohana Sitorus, Mido Ester Supadi Supadi Suryaman, Nia Nuraeni Tauladani, Saeful A. Tolawo, Rocky Geraldo Yuli Purwanto, Yuli Zulkarnain S.T.,M.T.