Hydrophobic silica thin films by sol-gel processing and spin coating technique at low temperature

Hydrophobic silica thin films were prepared by sol-gel processing and self-assembly by chemical vapor reaction with Trimethylchlorosilane (TMCS) at low temperature. The sols were divided into Sol A with ethanol, Polyethylene glycol (PEG) and water (H2O) while Sol B were contain precursor of silica Tetraethylorthosilicate (TEOS) hydrolyze with ethanol which was stirred for 15 minutes. HCl was added into the mixture and stirred for another 10 minutes. After deposition on 1 x 1 cm corning glass using spin coating technique (two-step timer), the films were heated at 60˚C for 10 minutes and finally annealed at 150°C for 1 hour. The films were characterized by using Rudolph/Auto EL Ellipsometer, Shimadzu Spectrophotometer, Perkin Elmer Fourier Transform Infrared (FTIR) and Atomic Force Microscope (AFM). The results showed that the films thickness and refractive index were in the range of 105.2 to 112.4 nm and 1.35 to 1.38, respectively. The films were transmitted 70-80% of light (in visible range) with various bondings of C-H, Si-O-Si, Si-C and Si-OH. Surface roughness of the films was increased from 30.6 nm (silica thin film) to 140.5 nm (hydrophobic silica thin films) after modification have been done on the films by using TMCS (heated at 40˚C). It was found that the water contact angles increased when time of reaction increased from 109° to 124

Kajian Karakteristik Fisik Dan Kimia Gelatin Ekstrak Tulang Kaki Ayam (Gallus Gallus Bankiva) Dengan Variasi Lama Perendaman Dan Konsentrasi Asam

Penelitian ini bertujuan untuk mengetahui pengaruh lama perendaman dan konsentrasi asam terhadap rendemen gelatintulang kaki ayam yang dihasilkan dan pengaruh kedua variasi tersebut terhadap karakteristik fisik dan kimia gelatintulang kaki ayam yang dihasilkan. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan dua faktoryaitu variasi lama perendaman asam (24 dan 48 jam) dan variasi konsentrasi HCl (4%, 5%, dan 6%). Hasil penelitian inimenunjukkan bahwa penggunaan waktu perendaman yang berbeda tidak berpengaruh nyata terhadap rendemen.Sedangkan penggunaan konsentrasi HCl yang berbeda berpengaruh nyata pada rendemen gelatin yang dihasilkan. Untuklama perendaman yang berbeda berpengaruh nyata pada nilai viskositas gelatin tulang kaki ayam yang dihasilkan.Sedangkan untuk konsentrasi HCl yang berbeda berpengaruh pada nilai kekuatan gel, kadar abu, kadar air, dan pHgelatin tulang kaki ayam yang dihasilkan

Karakteristik Buah Melon (Cucumis Melo L.) pada Lima Stadia Kematangan

Melon breeding for fruit quality improvement is important to produce new varieties that meet consumers' demand. The aim of this study was to elucidate the fruit characteristics of melon at five different maturity stages, involving several genotypes belonging to two cultivar groups: reticulatus and inodorus. The experiments were conducted in three planting seasons: (1) January-March 2015 (13 genotypes), (2) December 2015-February 2016 (56 genotypes), (3) February-May 2016 (9 genotypes). These trials were conducted at the Tajur II experimental station of IPB, Bogor, and each trial was arranged in a single factor randomized complete block design with three blocks. Maturity stages was determined based on fruit rind color and net coverage, and their effects on fruit quality were studied using combined analyses over seasons. Maturity stage significantly affected the fruit length, fruit diameter, flesh thickness, fruit weight, and sugar content. The average weight of the fruits at maturity stage 4 (838.90 g) and 5 (931.79 g) was significantly greater than that of stage 1 (584.42 g). The sugar content increased from maturity stage 2 (5.51 oBrix) to 3 (6.13 oBrix) and to 5 (8.18 oBrix). Fruit weight significantly correlated with fruit length (r = 0.53), fruit diameter (r = 0.85), fruit rind thickness (r = 0.33), and flesh thickness (r = 0.63). Maturity stages affected the quality of melon fruits, and therefore the determination of appropriate harvesting criteria is important in melon cultivations

Pengaruh Pembelajaran Quantum Dalam Pembelajaran IPA Terhadap Motivasi Belajar Dan Penguasaan Konsep Siswa Kelas IV Sdn 3 Pancor

This study aims to determine the effect of Quantum learning on learning motivation and mastery of science concepts of fourth grade students. This study was an experimental research conducted at SDN 3 Pancor, involving 60 students. The control group was 30 students of IV B class, the experimental group was 30 students of IVC class. The class were determined using random sampling technique. Quantum Learning is the independent variable, learning motivation and mastery of science concepts are as the dependent variables. The data were collected using questionnaire and mastery of science concepts test. The data were analyzed using Manova with the assistance of SPSS 16.0 for Windows. The result of the analyses shows that: (1) there is a significant difference in learning motivation between students learning using quantum learning and those using conventional learning (F = 26.47, p <0.05), (2) there are significant differences between the science concept mastery between students learning using quantum learning and those using conventional learning (F = 26.36, p <0.05), (3) there are significant differences in learning motivation and mastery of science concepts between students learning using quantum learning and those using conventional learning (F = 26.14, p <0,05). Quantum learning can be said to affect student motivation and the mastery of science concepts

Pertumbuhan Dan Perkembangan Tunas Pada Bibit Nyamplung Hasil Pembiakan Dengan Teknik Sambungan

Callophyllum inophyllum Linn. is one of potential tree species for commercial plantation as biofuel sources. This species was generally propagated by generative method and seldom vegetative method in mass planting stock production. A completely randomized design was arranged in factorial experiment to identify the effect of three grafting methods and four origins of scion in mother tree on the growth of grafted plants. The growth of grafted plants was observed at nursery and the development of graft union anatomy was observed through microscopic method in laboratory. The result showed that grafting method significantly influenced to shoot number and shoot length, with the best result showed by veneer graft method. Position of scion in mother trees influenced shooting rate and the best result was gained through the scion from the lower part of the tree crown. The survival rate was 72-100%, shooting rate was 68-100% with 1,9 shoots per grafted and average of shoot length was 0,65 cm.The growth of graft union showed earlier by callus formation and then differentiated to a vascular tissu

Hubungan Lama Penggunaan Kb Implant Dengan Jumlah Keluhan Pada Akseptor Di Puskesmas Junrejo Kota Batu

HUBUNGAN LAMA PENGGUNAAN KB IMPLANT DENGAN JUMLAH KELUHAN PADA AKSEPTOR DI PUSKESMAS JUNREJO KOTA BATULong Relationship With The Use of KB Implant Number of Complaints On Health Junrejo Acceptors In Stone TownTri Lestari Handayani1, Atok Miftachul Huda2, Winda Riski31, 2)Program Studi Ilmu Keperawatan Fakultas Ilmu Kesehatan Universitas Muhammadiyah Malang3)Alumni Mahasiswa Program Studi Diploma III Keperawatan Fakultas Ilmu Kesehatan Universitas Muhammadiyah MalangJl. Bendungan Sutami 188A Malang 65145*)e-mail: [email protected] adalah alat kontrasepsi yang disusupkan di bawah kulit lengan atas sebelah dalam, berbentuk kapsul silastik (lentur), panjangnya sedikit lebih pendek dari korek api. Penggunaan KB implant dapat diganti setiap 3 atau 5 tahun dan ada juga yang setiap tahun, dari penggunaan KB implant banyak akseptor yang mengeluhkan terjadinya Perubahan pada berat badan, haid yang tidak teratur, amenore, dan nyeri haid. Untuk mengetahui apakah ada hubungan lama penggunaan KB implant dengan jumlah keluhan pada akseptor di Puskesmas Junrejo Kota Batu. Desain penelitian yang digunakan adalah deskriptif korelasional. Populasi penelitian akseptor KB implant di Puskesmas Junrejo Kota Batu berjumlah 23 responden. Pengumpulan data pada penelitian ini menggunakan kuesioner. Hasil penelitian menunjukkan dari perhitungan analisis data menggunakan regresi linier sederhana diketahui p value 0.656 > 0.25, hal ini berarti Ho diterima dan Hi ditolak, yang artinya tidak ada hubungan antara lama penggunaan KB implant dengan jumlah keluhan. Peneliti menyarankan pada pelayanan kesehatan untuk lebih menjelaskan keuntungan dan kerugian dalam pemakaian KB implant.Kata kunci: lama penggunaan KB implant, jumlah keluhanABSTRACTImplant is a contraception tool that inserted under arm skin on top of inside, have the shape of silastic capsule (flexible), length a little shorter from match. Use of KB implant replaceable every 3 or 5 years and there also every year, from use of KB implant many acceptors that sigh the happening of change in heavy body, menstruation not regular, amenore, and menstruation pain. To detect is there the relation of long use of KB implant with complaint quantity in acceptor at Local Government Clinic of Junrejo Batu City. Research design that used is descriptive correlation. Research population of KB implant acceptor at Local Government Clinic of Junrejo Batu City is 23 respondents. Data collecting in this research is using questionnaire. Research result shows from data analysis calculation by using simple linear regression is known that p value is 0.656 > 0.25, its means that Ho accepted and Hi averse, with the meaning there is no relation between long uses of KB implant with complaint quantity. Researcher implies to health service to be more explain profit and loss in use KB implant

Karakteristik Penyakit White Band Disease Dan White Syndrome Secara Visual Dan Histologi Pada Karang Acropora SP. Dari Pulau Gili Labak Sumenep Madura

Penyakit white band disease dan white syndrome yang menyerang karang Acropora sp. di Pulau Gili Labak merupakan salah satu masalah yang perlu diperhatikan, sebab terjadinya kematian terumbu karang yang disebabkan oleh penyakit karang bukan hanya akan berpengaruh pada fungsi ekologis terumbu karang namun juga akan mempengaruhi fungsi ekonomis. Tujuan penelitian ini adalah untuk mendeteksi penyakit karang dengan metode histologi dengan studi kasus di Pulau Gili Labak, Poteran, Sumenep-Madura. Pengambilan sampel penelitian ini dilaksanakan pada bulan April 2017 di perairan Pulau Gili Labak Kabupaten Sumenep. Penelitian deteksi penyakit pada jaringan karang dengan metode histologi dilakukan pada Laboratorium Histologi Fakultas Kedokteran Universitas Brawijaya Malang. Analisa data dilakukan dengan metode analisa deskriptif. Ditemukan jaringan karang Acropora sp. yang terserang penyakit white band disease dan white syndrome yang terjadi banyak perbedaan antara jaringan karang yang sehat dengan yang sakit. Umumnya pada jaringan karang yang sehat terlihat susunan sel pada jaringan karang terlihat masih baik dan utuh, sedangkan pada jaringan karang yang sakit menunjukan bahwa jaringan mengalami degradasi disebabkan oleh jaringan yang lisis dan nekrosis, jaringan sakit terlihat hilang dan mulai hancur. Penyakit white band disease dicirikan dengan adanya jaringan yang mengelupas dari skeleton karang, sedangkan penyakit white syndrome hilangnya jaringan dimulai pada epidermis terlebih dahulu lalu merambat kedalam skeletonnya

The Neuroscience Information Framework: A Data and Knowledge Environment for Neuroscience

With support from the Institutes and Centers forming the NIH Blueprint for Neuroscience Research, we have designed and implemented a new initiative for integrating access to and use of Web-based neuroscience resources: the Neuroscience Information Framework. The Framework arises from the expressed need of the neuroscience community for neuroinformatic tools and resources to aid scientific inquiry, builds upon prior development of neuroinformatics by the Human Brain Project and others, and directly derives from the Society for Neuroscience’s Neuroscience Database Gateway. Partnered with the Society, its Neuroinformatics Committee, and volunteer consultant-collaborators, our multi-site consortium has developed: (1) a comprehensive, dynamic, inventory of Web-accessible neuroscience resources, (2) an extended and integrated terminology describing resources and contents, and (3) a framework accepting and aiding concept-based queries. Evolving instantiations of the Framework may be viewed at http://nif.nih.gov, http://neurogateway.org, and other sites as they come on line

Group-IV graphene- and graphane-like nanosheets

We performed a first principles investigation on the structural and electronic properties of group-IV (C, SiC, Si, Ge, and Sn) graphene-like sheets in flat and buckled configurations and the respective hydrogenated or fluorinated graphane-like ones. The analysis on the energetics, associated with the formation of those structures, showed that fluorinated graphane-like sheets are very stable, and should be easily synthesized in laboratory. We also studied the changes on the properties of the graphene-like sheets, as result of hydrogenation or fluorination. The interatomic distances in those graphane-like sheets are consistent with the respective crystalline ones, a property that may facilitate integration of those sheets within three-dimensional nanodevices