Fabrikasi Nanotubes Titanium Dioksida (TiO2) Menggunakan Metode Hidrotermal

Nanotubes received great attention because it has a high surface area. In this study, TiO2 nanotubes fabricated via hydrothermal method from synthesis of TiO2 nanoparticles via sol-gel method. Catalysts that have been synthesized later in the characterization by X-Ray Diffraction (XRD) to obtain the crystal size and crystallinity. Crystal size of TiO2 nanoparticles at a temperature of 450C is 13.78 nm. Then characterized by Transmission Electron Microscopy (TEM) to look at the formation of nanotubes. Characterization of TiO2 nanotubes with TEM shows that the structure of the tubes had already been formed TNTs although the growth has not been perfect. It can be seen from the structure TNTs who tend to be short and yet so irregular.DOI: http://dx.doi.org/10.15408/jkv.v0i0.503

Pengaruh Pelarut terhadap Karakteristik Nanopartikel Titanium Dioksida (Tio2)

PENGARUH PELARUT TERHADAP KARAKTERISTIK NANOPARTIKEL TITANIUM DIOKSIDA (TiO2) ABSTRAK Tujuan penelitian ini adalah untuk membandingkan jenis pelarut dalam proses pembentukan nanopartikel titanium dioksida dengan metode sol gel. Hasil karakterisasi dengan X-Ray Diffraction (XRD) menunjukkan bahwa penggunaan pelarut berpengaruh terhadap kristalinitas dan fasa material yang terbentuk. Berdasarkan Joint Committee on Powder Diffraction Standards (JCPDS) card nomor 84-1286 menunjukkan difraktogram nano TiO2 hasil sintesis sebagian besar merupakan fasa anatas. Hal ini terlihat dari nilai 2 teta yang diperoleh yaitu 24,45˚; 47,29˚; 53,18˚; 61,64˚ untuk fasa anatas dan 54,65˚; 74,16˚ untuk fasa rutil. Hanya saja persentase fasa anatas pada nano TiO2 menggunakan pelarut metanol lebih besar jika dibandingkan dengan hasil nano TiO2 dengan pelarut etanol. Berdasarkan perhitungan ukuran partikel nano TiO2 menggunakan persamaan Debye- Scherer didapatkan ukuran nano TiO2 menggunakan metanol sebesar 13.78 nm sedangkan nano TiO2 menggunakan etanol sebesar 34.26 nm. Kata Kunci: Pelarut, sol-gel, titanium dioksida EFFECT OF SOLVENTS ON THE CHARACTERITICS OF NANOPARTICLES TITANIUM DIOXIDE (TiO2) ABSTRACTThe purpose of this study was to compare the type of solvent in the process of formation of titanium dioxide nanoparticles with sol gel method. X-Ray Diffraction (XRD) characterization results indicate that the use of solvent effect on crystallinity and phase material formed. Based Joint Committee on Powder Diffraction Standards (JCPDS) 84-1286 card numbers show diffractogram nano TiO2 synthesized largely a anatas phase. This can be seen from a value of 2 theta obtained by the 24,45˚; 47,29˚; 53,18˚; 61,64˚ to phase anatas and 54,65˚; 74,16˚ for rutile phase. Only a small percentage of the nano TiO2 anatase phase using methanol solvent is greater when compared with the results of nano TiO2 with ethanol. Based on the calculation of nano TiO2 particle size using equation Debye- Scherer obtained nanosized TiO2 using methanol amounted to 13.78 nm while the nano TiO2 using ethanol amounted to 34.26 nm

Pengaruh Persepsi Perawat Pelaksana Tentang Fungsi Manajerial Kepala Ruang Terhadap Pelaksanaan Manajemen Asuhan Keperawatan Di Ruang Rawat Inap Rsjd Dr. Amino Gondohutomo Semarang

Influence of the Nurse's Perception about Function of the Head Nurse Management toward Nursing Care Management Implementation at Inpatient Room of Dr. Amino Gondohutomo District Mentally Hospital in Semarang. The functions of management such as planning, organizing, guiding, monitoring, and controlling had not been done well by the head nurse. Nursing management is important to determine the nursing care services for client at inpatient room. Aim of this research was to analyse influence of the nurse's perception about function of the head nurse management toward nursing care management implementation at Inpatient Room of Dr. Amino Gondohutomo District Mentally Hospital in Semarang. This was a quantitative and qualitative research with cross sectional approach. Population was nurses at inpatient room and all head nurses. Number of sample was 52 nurses taken by Proportionate stratified random sampling at 12 inpatient rooms. The questionair was used to collect data continued with cross check to the head nurses about perception of management. Result of this research showed that implementing of nursing care management is good (65,4%). Perception of a nurse about the head's nurse management namely: (1) Good planning (53,8%), no significant association (p=0,857), and no influence (p=0,543, Exp B=0,700). (2) Good organizing (55,8%), no significant association (p=0,982), and no influence (p=0,982, Exp B=1,013). (3) Good guiding (75%), significant associated (p=0,002), and significant influence (p=0,035, Exp B=4,888). (4) Not good monitoring (51,9%), significant association (p=0,007), and significant influence (p=0,068, Exp B=3,679). (5) Not good controlling (59,6%), no significant association (p=0,873), and no influence (p=0,873, Exp B=1,100). Conclusion of the research is the nurse who perceives not good the head's nurse guiding has a risk to be not implementing the nursing care management (p=0,035, Exp B=4,888), and the nurse who perceives not good the head's nurse monitoring has a risk to be not implementing the nursing care management (p=0,068, Exp B=3,679)

Perancangan Dan Implementasi Sistem Informasi Administrasi Pembelian Dan Penjualan Pada Krista Celluler Dengan J2se

Management of sales data in an attempt to be a very important thing to note. The data are well-managed system will allow users to obtain the necessary data. It will also facilitate the reporting on the condition of the sale that is going on by an admin to the manager, given over in the process of reporting on the results of the sales and the necessary information about the products is still considered lacking and difficult to obtain.The proposed system to solve the existing problems such transactions can complete the process runs quickly and accurately and optimally. Besides, the system can be used for reporting the completion of the sale and purchase of data, so the system can be difficult to overcome information about the required data.Judging from the research that has been done to obtain hasilyang well and allow the system to be applied. In terms of the proposed prancangan display, the system is very simple and uncomplicated making it easier for users to use

Menemukan Ide Pokok Paragraf Menggunakan Metode Inkuiri Pembelajaran Bahasa Dan Sastra Indonesia Di SD Swasta Erna Sanggau

The title of this research is to findout main idea of the paragraph using inquiry method studying Indonesian language and literature at elememtary school. The purpose of this research is to express intensive reading ability and under stand the text using inquiry method in grade VIB elementary school Erna to overcome students difficulties of find out main idea. The research method is descriptive, the form is surve, the subject is 23 students grade VIB elememntary school Erna.The technigue of data assemble is direct observation and the tool is observation sheets. From the result: there are improvement intensive reading abilities 71,73% with high category improvement understand of text ability 73,91% with high category, improvement study result with high category. The teacher can use inquiry method in order to find out the main idea as well as hope

Matroidal and Lattices Structures of Rough Sets and Some of Their Topological Characterizations

Matroids, rough set theory and lattices are efficient tools of knowledge discovery. Lattices and matroids are studied on preapproximations spaces. Li et al. proved that a lattice is Boolean if it is clopen set lattice for matroids. In our study, a lattice is Boolean if it is closed for matroids. Moreover, a topological lattice is discussed using its matroidal structure. Atoms in a complete atomic Boolean lattice are completely determined through its topological structure. Finally, a necessary and sufficient condition for a predefinable set is proved in preapproximation spaces. The value k for a predefinable set in lattice of matroidal closed sets is determined

Matroidal and Lattices Structures of Rough Sets and Some of Their Topological Characterizations

Matroids, rough set theory and lattices are efficient tools of knowledge discovery. Lattices and matroids are studied on preapproximations spaces. Li et al. proved that a lattice is Boolean if it is clopen set lattice for matroids. In our study, a lattice is Boolean if it is closed for matroids. Moreover, a topological lattice is discussed using its matroidal structure. Atoms in a complete atomic Boolean lattice are completely determined through its topological structure. Finally, a necessary and sufficient condition for a predefinable set is proved in preapproximation spaces. The value k for a predefinable set in lattice of matroidal closed sets is determined

Pengaruh Pelaksanaan Kelas Ibu Hamil Terhadap Pengetahuan Tentang Persiapan Persalinan

Latar belakang : Penyebab kematian ibu ditandai dengan hal-hal non teknis yang masuk kategori penyebab mendasar seperti rendahnya status wanita, ketidak berdayaannya dan taraf pendidikan rendah. Kondisi ini dipengaruhi pula oleh kurangnya pengetahuan ibu hamil mengenai komplikasi/penyulit pada masa kehamilan. Kelas ibu hamil merupakan sarana untuk belajar bersama tentang kesehatan bagi ibu hamil, dalam bentuk tatap muka dalam kelompok yang bertujuan untuk meningkatkan pengetahuan dan ketrampilan ibu-ibu mengenai kehamilan, persalinan, perawatan nifas, perawatan bayi baru lahir, mitos dan penyakit menular.Tujuan : penelitian ini untuk mengetahui pengaruh pelaksanaan kelas ibu hamil terhadap pengetahuan tentang persiapan persalinan.Metode : Penelitian ini bersifat eksperimen dengan desain penelitian One-Group Pretest-Postest. Populasi dalam penelitian ini adalah semua ibu hamil Trimester III pada bulan Januari 2013 di Puskesmas Tanoyan Kecamatan Lolayan Kabupaten Bolaang Mongondow berjumlah 36 ibu hamil. Data diperoleh melalui kuesioner. Analisis menggunakan Uji paired t-test.Hasil : penelitian menunjukkan nilai rerata berdasarkan pelaksanaan kelas ibu hamil pre-test adalah 43,83 dan setelah pelaksanaan kelas ibu hamil 48,47 (post-test), adanya perbedaan yang bermakna (p=0,000 < α 0,05). Kesimpulan ada pengaruh pelaksanaan kelas ibu hamil terhadap pengetahuan tentang persiapan persalinan di Puskesmas Tanoyan Kecamatan Lolayan Kabupaten Bolaang Mongondow.Kata Kunci : Pengetahuan Ibu Hamil, pelaksanaan Kelas Ib