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Indonesian Journal of Applied Sciences

ijas
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Published by Universitas Padjadjaran

ISSN : 20899203 EISSN : 25811991 DOI : -

Core Subject : Social,

Environmental Science

Indonesian Journal of Applied Sciences (IJAS) is a scientific journal published three times a year (April, August, December). Indonesian Journal of Applied Sciences publish original research results related to research in the field of natural science, covering a wide range of topics written in the field of knowledge: medicine, agriculture, animal husbandry, fisheries, pharmaceuticals, and other exact sciences

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Articles 144 Documents

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PENGARUH PEMBERIAN BERBAGAI DOSIS PUPUK FOSFAT DAN SISTEM TANAM TERHADAP pH, P-TERSEDIA TANAH, DAN SERAPAN P TANAMAN PADI SAWAH Endang Kantikowati
Indonesian Journal of Applied Sciences Vol 4, No 2 (2014)
Publisher : Universitas Padjadjaran

Differences Growing Media In Autopot Fertigation System And Its Response To Cherry Tomatoes Yield Nurpilihan Bafdal; Sophia Dwiratna; Dwi Rustam Kendarto
Indonesian Journal of Applied Sciences Vol 7, No 3 (2017)
Publisher : Universitas Padjadjaran

Hydroponic cultivation system is one solution to overcome the limited agricultural land. This farming system is widely used in farming high-value horticulture, one of them is a cherry tomato plants. The key to success in the hydroponic system is the management of water and nutrients appropriate to the needs of plants. Nevertheless, fertigation system on hydroponic plant cultivation requires a fairly high production costs and dependent on electrical energy for circulation. This study aims to assess the application of fertigation systems that do not use electricity for the circulation of water and nutrients using autopot technology. Fertigation system using this autopot applied to the cherry tomato plants using three combinations of planting medium is husk-compost, husk charcoal-humus and husk-cocopeat with a ratio of 50%: 50%. The results showed that autopot system capable of supplying the needs of water and plant nutrients to the level of irrigation efficiency is very high also minus consumption of electrical energy. The combination of growing media and compost husk cherry tomato plants to respond favorably with yields of 4.72 kg/plant. Keywords : Hydroponics; Autopot technology; Growing media; Cherry tomatoes; Fertigation automation

EFEKTIVITAS JERUK NIPIS DALAM MENURUNKAN BAKTERI SALMONELLA DAN ESCHERICHIA COLI PADA DADA KARKAS AYAM BROILER Agustinus Hantoro Djoko Rahardjo
Indonesian Journal of Applied Sciences Vol 2, No 3 (2012)
Publisher : Universitas Padjadjaran

The research objectives to study the effectiveness of lime juice as a decontaminant agent in reducing Salmonella and Escherichia coli bacteria in broiler carcasses breast sold at traditional markets. Decontamination of broiler carcasses breast through in immersion at the distilled water containing lime juice 5, 10, and 15% for 5 and 10 minutes. Results indicated thatdecontamination of lime juice with different concentrations after 5 and 10 minutes immersion has significant effect (P <0.05)reduce of Salmonella bacteria up to 96.43 percent. Decontamination are also able to reduce the number of bacteria Escherichia coli up to 57.38 percent, but is no difference in effect between concentration and long immersion of the number of bacteria on broiler carcass breast. The conclusion of this study is lime juice as an effective decontaminant agent to reduce of Salmonella and Escherichia coli bacteria as a whole broiler carcass breast.

UJI AKTIVITAS ANTIOKSIDAN EKSTRAK DAUN SIRSAK (ANNONA MURICATA LINN) TERHADAP DPPH (1,1-DIPHENYL-2-PICRYLHYDRAZIL) NISA NASPIAH; MUHAMMAD AMIR MASRUHIM; VICTORIA YULITA FITRIANI
Indonesian Journal of Applied Sciences Vol 3, No 2 (2013)
Publisher : Universitas Padjadjaran

Kesesuaian Kualitas Citra Sidik Perfusi Miokard Antara Menggunakan Radiofarmaka 99mTC-Tetrofosmin Produk Lokal dan Produk Impor - Agreement of Imaging Quality of Miocard Perfusion Between the use Radiopharmaceutical 99mTC-Tetrofosmin Local and Imported N. Elly Rosilawati; A. Hussein Sundawa Kartamihardja; A. Mutalib
Indonesian Journal of Applied Sciences Vol 4, No 1 (2014)
Publisher : Universitas Padjadjaran

Abstrak Kualitas pencitraan ditentukan salah satunya oleh rasio penangkapan radiofarmaka pada organ target terhadap latarbelakang. Pengukuran secara kuantitatif penangkapan radiofarmaka oleh organ target dan latarbelakang dapat ditentukan dengan menghitung rata-rata cacahan pada ROI pada jantung dan latarbelakang. Tujuan penelitian ini adalah untuk mengetahui bagaimana tingkat kesesuaian kualitas citra Sidik Perfusi Miokard (SPM) antara menggunakan 99mTC-Tetrofosmin produk lokal dan 99mTC-Tetrofosmin produk impor dengan parameter angka banding rata-rata cacahan organ target terhadap rata-rata cacahan latarbelakang. Penelitian dilakukan di Departemen Ilmu Kedokteran Nujlir dan Pencitraan Molekuler Rumah Sakit Hasan Sadikin Bandung. Analisis statistik dengan korelasi Pearson untuk melihat hubungan antara angka banding rata-rata cacahan organ target/ rata-rata cacahan latarbelakang kit produk lokal dan produk impor nilai p<0,05 dianggap bermakna, analisis Bland-altman untuk mengetahui kesesuaian antara angka banding, uji varians Pitman’s test dan uji t berpasangan ditentukan untuk melihat perbedaan rerata angka banding. Penelitian melibatkan 30 subjek penelitian yang dibagi menjadi dua kelompok. Kelompok pertama dilakukan SPM dengan 99mTC-Tetrofosmin produk impor dan kelompok kedua SPM dengan 99mTC-Tetrofosmin produk lokal, Kemudian lakukan sebaliknyas etelah periode washout 1 minggu. Diperoleh korelasi yang sangat kuat dan bermakna antara angka banding rata-rata cacahan organ target/ latarbelakang kit tetrofosmin impor dan lokal dengan nilai r=0.865, kemaknaan p <0.001, batas kesesuaian -0.498 sampai 0.271 dan tidak ada perbedaan varians dari data (p=0.981). Simpulan, terdapat kesesuaian kualitas citra SPM antara menggunakan Radiofarmaka 99mTC-Tetrofosmin produk lokal dan Radiofarmaka 99mTC-Tetrofosmin produk impor dengan parameter angka banding rata-rata cacahan organ target terhadap rata-rata cacahan latarbelakang. Kata Kunci : Kualitas Citra, rata-rata cacahan organ target/ rata-rata cacahan latarbelakang

KARAKTERISTIK FLUIDA DAN GAS PANAS BUMI SEBAGAI PENGARUH PENINGKATAN AKTIVITAS VULKANIK GUNUNGAPI SLAMET (Characteristic Of Geothermal Fluid And Gas Induced By Increased Volcanic Activity Of Slamet Volcano) Mamay Surmayadi
Indonesian Journal of Applied Sciences Vol 5, No 3 (2015)
Publisher : Universitas Padjadjaran

AbstrakSejak awal Maret 2014 status aktifitas Gunungapi Slamet di Jawa Tengah dinaikan dari Normal menjadi Waspada seiring dengan peningkatan jumlah gempa vulkanik. Seismisitas Gunungapi Slamet memperlihatkan gempa letusan 1106 kejadian dan gempa hembusan 6857 per hari. Sementara itu, gempa vulkanik dalam hanya terekam 2 kali selama periode Maret – Agustus 2014. Sumber gempa berada pada kedalaman antara 1 - 2 km di bawah kawah Gunungapi Slamet sebagai indikasi gempa permukaan. Peningkatan aktifitas vulkanik Slamet menghasilkan pelepasan gas CO2 yang berpengaruh terhadap fluida panas bumi yang ditunjukan dengan terjadinya perubahan keasaman air dari normal menjadi alkalin, pembentukan bualan gas CO2 pada air panas Pancuran 3 di Baturraden, dan peningkatan saturasi kalsit. Bualan gas CO2 menjadi indikasi terjadinya proses pendidihan pada temperatur 273 C pada kedalaman 454 m di bawah permukaan laut. Kondisi ini menjadikan temperatur reservoir lebih tinggi sebagai indikasi sistem panas bumi Gunungapi Slamet merupakan sistem panas bumi aktif bertemperatur tinggi. Kata kunci : gempa permukaan, fluida panas bumi, bualan gas, saturasi kalsitAbstractSince the beginning of March 2014 the status of activities Slamet volcano in Central Java has been declared from Normal becomes Alert due to significant increase in the number of volcanic earthquakes. Slamet volcano seismicity shows eruption earthquakes as many as 1106, and gas emission earthquakes as many as 6857 events per day. Meanwhile, the deep volcanic earthquake recorded only 2 times during the period March to August 2014. The hypocentre of these earthquake was at a depth of 1-2 km below Slamet volcano crater as an indication of the surface earthquakes.Increased magmatic activity resulted in the release of CO2 gas effect on the geothermal fluid which is indicated by changes in water acidity from normal to alkaline, formation of CO2 bubble gas on Pancuran 3 hot spring at Baturraden area, and calcite saturation enhancement. The presence of CO2 bubble gas is indication of boiling at temperatures 273 C at a depth of 454 m below sea level. This condition makes the reservoir temperature becomes higher as indication that the geothermal system of Slamet volcano is active geothermal systems with high temperature (high enthalpy).Keywords: surface earthquake, geothermal fluid, bubble gas.

Makna Kebahagiaan Integratif Rostiana Rostiana
Indonesian Journal of Applied Sciences Vol 1, No 2 (2011)
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/ijas.v1i2.1873

There are two dominant approaches of happiness based on etic perspective, hedonic approach as represented by Subjective Well Being-Diener’s theory and eudaimonic approach as represented by Psychological Well Being – Ryff’s theory. However the implementation in one culture has to considered the emic perspective. The researcher found in preliminary research that happiness in emic perspective from Jakarta citizens (170 subjects) is perceived not just in hedonic and eudaimonic perspective, but also contained spiritual meaning such as closeness to God. Based on the preliminary research, this study is aimed to prove the model of integrative happiness that formulated by hedonic, eudaimonic and spiritual dimensions. Data were collected by using questionnaires from 750 urban people living in Jakarta-Bogor-Tangerang-Bekasi, and to be analyzed by SEM with Lisrel programme. The result showed that integrative model of happiness fit with empirical data (chi square= 42,19; df =34; p value = 0,16; RMSEA= 0,02; GFI = 0,99).. Eudaimonia is found to be the dominant factor for happiness. Based on this integrative model of happiness, it can be stated that happiness people are those people that have purpose in life, show more positive emotion than negatif emotion and act patient in life.****Ada dua pendekatan yang dominan dalam membahas kebahagiaan berdasarkan perspektif etic (universal) yaitu hedonia yang direpresentasikan dalam teori Diener dan eudaimonia dalam teori Ryff. Namun penerapannya dalam konteks budaya tertentu perlu mempertimbangkan perspektif emic (lokal). Melalui kajian awal pada masyarakat Jakarta (170 subyek) peneliti menemukan bahwa kebahagiaan tidak hanya dipahami secara hedonik atau eudaimonik saja tapi juga mencakup makna spiritual. Berdasarkan kajian awal tersebut, penelitian ini ditujukan untuk membuktikan model kebahagiaan integratif yang mencakup hedonia, eudaimonia dan spiritual. Data dikumpulkan melalui kuesioner pada 750 responden yang berdomisili di jakarta, Bogor-Tangerang-Bekasi dan dianalisis melalui SEM dengan bantuan program lisrel. Hasilnya menunjukkan model kebahagiaan integratif terbukti sesuai dengan kondisi empirik (chi square= 42,19; df =34; p value = 0,16; RMSEA= 0,02; GFI = 0,99). Dalam penelitian ini terbukti eudaimonia merupakan faktor dominan dalam kebahagiaan integratif. Melalui model tersebut dapat dikatakan bahwa orang yang berbahagia adalah orang yang memiliki tujuan hidup, memperlihatkan lebih banyak emosi positif daripada emosi negatif dan bertindak sabar dalam hidupnya.

TRAITS KEPRIBADIAN, SPIRITUALITAS, DUKUNGAN EMOSIONAL PASANGAN DAN PENGARUHNYA TERHADAP KESEJAHTERAAN PSIKOLOGIS IBU PENGHUNI 'SARANG KOSONG' DI KOTA BANDUNG - PERSONALITY TRAITS, SPIRITUALITY, MARRIAGE COUPLE EMOTIONAL SUPPORT ON AND THE INFLUENCES FOR PSYCHOLOGICAL WELL-BEING OF EMPTY-NESTER MOTHERS IN BANDUNG Ria Wardani
Indonesian Journal of Applied Sciences Vol 5, No 2 (2015)
Publisher : Universitas Padjadjaran

AbstrakMasa paruh baya adalah saatnya menghadapi fenomena 'sarangh kosong' yaitu rumah tanpa kehadiran anak-anak. Sebagai suatu bentuk transisi kehidupan sekaligus life event, 'sarang kosong' ini merupakan kejadian yang harus diadaptasi, khususnya bagi para ibu. Sebagai suatu proses, adaptasi ini akan melibatkan sumber daya internal (kepribadian dan spiritualitas) maupun eksternal (dukungan emosional pasangan) dan berujung pada terbangunnya kesejahteraan psikologis. Menggunakan desain penelitian causal inferences, seluruh responden yang berukuran 201 diolah datanya dengan menggunakan SEM-PLS. Hasil penelitian membuktikan, secara serempak tidak semua trait kepribadian memberikan sumbangan pengaruh terhadap terbangunnya kesejahteraan psikologis ibu penghuni 'sarang kosong.' Akan tetapi spiritualitas dan dukungan emosional pasangan yang tumbuh setelah trait kepribadian memberikan respon atau tanggapan terhadap keadaan di 'sarang kosong' terbukti memberikan pengaruh terhadap kesejahteraan psikologis yang terbangun. Trait kepribadian dengan sifat-sifat khas yang terangkum di dalamnya perlu ditemukenali dengan baik oleh ibu penghuni 'sarang kosong' untuk kemudian diberdayakan sebagai kekuatan yang handal dalam proses adaptasi di masa transisi. Kata kunci: masa transisi 'sarang kosong', kesejahteraan psikologis, spiritualitas, dukungan emosional, trait kepribadian AbstractMidlife is a time to face the phenomenon of empty nest that is house without the presence of children. As a transitional life forms, empty nest is an event that should be adapted, especially for mothers. As a process, this adaptation will involve internal resources (personality and spirituality) and external (partner's emotional support) and led to the establishment of psychological well-being. Research design causal inferences, the entire size of 201 respondents who processed the data by using SEM-PLS.The research proves, simultaneously not all personality trait contributed influence on the establishment of maternal psychological well-being. But spirituality and emotional support couples who grow after personality trait response to the situation in the empty nest proved to give effect to the psychological well-being awakened. Personality trait with distinctive properties are summarized to be identified properly by the mother occupants empty nest for later empowered as a reliable force in the process of adaptation in the transition period. Keywords : empty nest, psychological well-being, spirituality, emotional support, personality trait

THE EFFECTS OF CONCENTRATE FEED AND MINERAL BLOCK ON THE DENSITY LEVEL AND MILK FAT CONTENT OF DAIRY CATTLE Romziah Sidik; Desty Shafira; Mufasirin Mufasirin
Indonesian Journal of Applied Sciences Vol 7, No 2 (2017)
Publisher : Universitas Padjadjaran

AbstractThe aim of this research is to understand the influence of concentrate feed and mineral block formulation on the densitylevel and milk fat of dairy cattle. The research was conducted on eight cross breed friesian holstein cows with ± 450 kg body weight and aged 2-4 years with milk production 8-11 liter/head/day. The experimental design of this study was complete randomized design with two treatments and each treatment was repeated four times. P0 (grass, tofu waste) and P1 (grass, tofu waste, concentrate feed, mineral block). The data was analyzed using t test (independent sample t test ). The software that was used to analyzed the data is Statistical Program for Social Science (SPSS) version 20 for Windows. The results showed that concentrate feed and mineral block did not significantly affect the density of milk and milk fat (p > 0.05). The mean density of milk in the P0 was 1.0255 and P1 was 1.0253. Mean while the average milk fat in the P0 was 3.27% and in P1 was 3.45%. Keywords : concentrate, mineral block, density, fat, dairy cow

Simulasi Doking Antibodi Monoklonal Chimeric dan Humanized dengan Reseptor HER-1 dan HER-2 Rustaman Rustaman; Abdul Mutalib; Rustam E. Siregar; Ukun M. Syukur S.
Indonesian Journal of Applied Sciences Vol 1, No 1 (2011)
Publisher : Universitas Padjadjaran

In the last decade, cancer treatment get into a new era called targeted therapy for cancer. Monoclonal antibody (mAb) is one of the targeted therapy agents and belongs to a part of passive immunotherapy. The aim of this study is to predict the relative strength of binding affinity for several monoclonal antibodies binding to HER-1 and HER-2 receptors by calculating dissociation constants, evaluating a dominant interaction of the complexes, and predict the reactivity of HER-1 and HER-2 according to potential electrostatic map. Structures of the complexes of mAB (cetuximab and nimotuzumab) with HER-1 and anti-HER-2 (trastuzumab and petuzumab) with HER-2 was generated by docking simulation which combine three docking protocols (ZDOCK, ZRANK, and RDOCK). Filtering the initial docked poses with CDR’s (Complementarity Determining Regions) residues of antibody and the binding site of residues was done to narrow the resulted poses. The result of this study show that generally, the interaction between chimeric and humanized monoclonal antibodies with HER-1 present polar-polar interaction from lysine, asparagin, serin, arginin, and glutamin amino acids, and both of mAb interacted with domain III of HER-1, whereas, interaction between humanized monoclonal antibodies with HER‑2 was dominated by polar-polar interaction from aspartic acid, glutamic acid, glutamin, and lysin amino acids with domain II and IV of HER-2.*****Pada dekade terakhir, pengobatan kanker memasuki era baru yang disebut terapi kanker terarah. Antibodi monoklonal (mAb) adalah salah satu jenis obat terapi terarah yang merupakan bentuk pasif dari imunoterapi. Tujuan dari penelitian ini adalah memprediksi kekuatan relatif afinitas pengikatan kompleks-kompleks yang terbentuk dari hasil simulasi doking dengan menghitung tetapan disosiasinya, menginventarisasi jenis-jenis interaksi yang dominan, dan memprediksi reaktifitas HER-1 dan HER-2 berdasarkan pemetaan potensial elektrostatik molekul. Struktur kompleks tiga dimensi kompleks antibodi monoklonal anti-HER-1 (cetuximab dan nimotuzumab) dengan reseptor HER-1 dan antibodi monoklonal anti-HER‑2 (trastuzumab dan pertuzumab) dengan reseptor HER-2 ditentukan menggunakan metode doking protein-protein yang mengkombinasikan antara protokol pencarian ZDOCK dan fungsi skor ZRANK, serta protokol perbaikan pose RDOCK. Penyaringan hasil pose dilakukan berdasarkan sekuen asam-amino di daerah CDR (Complementarity Determining regions) dari antibodi dan sisi binding dari reseptor. Hasil penelitian yang diperoleh menunjukkan bahwa secara umum interaksi antara antibodi monoklonal chimeric dan humanized dengan HER-1 digambarkan oleh interaksi polar-polar dari asam-asam amino lisin, asparagin, serin, arginin, dan glutamin serta keduanya berinteraksi di domain III HER-1, edangkan interaksi antara antibodi monoklonal humanized dengan HER‑2 didominasi oleh interaksi polar-polar dari asam-asam amino aspartat, glutamat, glutamin, dan lisin di domain II dan IV HER-2.

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