11 research outputs found
Pembelajaran Sains Berbasis Homeschooling (Sekolah Rumah) pada Homeschooling Primagama (HSPG) Yogyakarta
No full textPenelitian ini bertujuan untuk mendeskripsikan alasan-alasan yang melandasi terlaksananya sistem belajar secara homeschooling di lembaga HSPG, dan mengetahui proses pembelajaran sains yang dijalankan dan implikasinya
terhadap hasil belajar siswa.
Jenis penelitian ini adalah penelitian kualitatif dengan metode studi kasus bertipe deskriptif. Penelitian ini dilaksanakan pada Lembaga Homeschooling Primagama (HSPG) yang ada di kota Yogyakarta. Subyek penelitian adalah para
pelaku homeschooling di lembaga HSPG, yaitu siswa, para tentor, terutama tentor sains, dan penyelenggara HSPG, serta orang tua siswa. Pengumpulan data dilakukan dengan menggunakan teknik angket, wawancara, observasi, dan
dokumentasi. Data dari angket dianalisis dan diolah, selanjutnya dikonfirmasikan dengan hasil wawancara, observasi, dan data dokumentasi yang diperoleh.
Hasil penelitian ini mengungkapkan bahwa penyelenggaraan sistem belajar secara homeschooling di HSPG dilandasi oleh kenginan manajemen lembaga untuk melakukan inovasi layanan pendidikan informal secara homeschooling bagi masyarakat, sedangkan bagi siswa dan orang tua siswa dilandasi oleh alasan dan pertimbangan, yaitu: kasus bullying, anak anti sekolah, beban psikologis anak, kesehatan anak, ketidaksinkronan anak dengan sistem sekolah, masalah pribadi anak, kenyamanan belajar, layanan pendidikan
berkualitas, alasan ideologis, mobilitas orang tua, kebutuhan khusus anak, dan upaya melanjutkan pendidikan anak yang terputus. Selanjutnya diperoleh pula bahwa perilaku awal siswa dalam hal budaya belajar tampak belum optimal sebelum mengikuti sistem homeschooling di HSPG, tetapi dalam hal hubungan sosial sudah cukup baik. Sementara itu, proses pembelajaran sains secara homeschooling di HSPG dapat berlangsung secara normal menggunakan kurikulum yang berlaku secara Nasional yang diimplementasikan menurut sistem homeschooling. Hambatan pembelajaran dari aspek fasilitas dapat ditunjang oleh
adanya sekolah payung dan lembaga lain yang membantu. Di samping itu, proses pembelajaran sains oleh para tentor sains di HSPG, masih didominasi oleh pendekatan pembelajaran secara konvensional, terutama untuk kelas puncak, tetapi pada kelas non puncak menyesuaikan dengan tuntutan materi sains yang diajarkan. Sistem homeschooling di HSPG ternyata mampu menghasilkan kualitas hasil belajar siswa ke arah yang lebih baik bila ditinjau dari aspek kognitif, afektif, maupun psikomotorik. Dengan sistem ini, anak maupun orang tua tidak merasa asing dan risih dengan lingkungannya, bahkan cukup optimis dan percaya diri akan prospek keberhasilan sistem ini
Imobilisasi Asam Humat Pada Kitin Dan Aplikasinya Sebagai Adsorben Cr(III)
No full textImmobilization of humic acid on chitin has been conducted and applied to the adsorption of Cr(III). The humic acid was isolated using NaOH 0.1 M, while chitin was isolated by deproteination of crab shells by using NaOH 3.5 % (w/v) and followed by demineralization using HCl 1 M. Chitin obtained from ambient-temperature-dried crab shell is named as chitin I, and crab shell washed by HOCl solution and followed by drying at ambient temperature is named chitin II. The total acidity of the humic acid was 230.95 cmol/kg, and it was distributed into the acidity of COOH 168.75 cmol/kg, and phenolic-OH 62.20 cmol/kg. Adsorbent A with chitin I as the main material and adsorbent B with chitin II as the main material, resulted the adsorbed humic acid of 9.25 and 1.68% (w/w), respectively. Adsorption of Cr(III) was maximum at pH 5, with rate of constants orde of chitin II>adsorbent B>adsorbent A>chitin I, i.e. 0.3509; ; 0.2488; 0.1553; 0.0568 minute-1, respectively. The capacity of adsorption was in the orde of chitin I>adsorbent B>chitin II>adsorbent A, i.e. 944.77; 912.53; 895.37; 893.81 mg/g, respectively. The energy of adsorption of Cr(III) of chitin II>chitin I>adsorbent A>adsorbent B, i.e. 22.932; 20,945; 20.312; 19.615 kJ/mol, respectively
THE UTILIZATION OF CHITOSAN THIOUREA FOR Cd(II) PRECONCENTRATION BY THE SOLID PHASE EXTRACTION (SPE) TECHNIQUE
No full textChitosan thiourea has been synthesized from crab shell starting material and the product of synthesis was then utilizing for Cd(II) metal preconcentration in the sea water medium. Synthesis process is done through the interaction between chitosan solution with thiourea solution, and was then characterized by FTIR spectrophotometer and XRD diffractometer. The preconcentration of Cd(II) metal conducted by using adsorption-desorption process with the flow injection system of Cd(II) metal solution in the SPE technique. The preconcentration process of Cd(II) metal also involved the influence of acidity, flow rates, and salt concentration to obtain an optimum preconcentration level.-
As a result, this study revealed that the successfully of chitosan thiourea synthesis process well marked by interaction between chitosan active sites (-NH2) and thiourea compound, which showed by the changes of chitosan FTIR spectra at the 1577.7 cm&mac
SYNTHESIS OF THIOUREA DERIVATIVE OF CHITOSAN AND ITS APPLICATION IN CADMIUM (II) AND NICKEL (II) ADSORPTION
No full textThe synthesis of new thiourea derivative of chitosan and its characterization by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (X-RD) is described. The thiourea derivative of chitosan, were prepared by adding an acetic acid solution of chitosan into aqueous solution of thiourea. An insoluble thiourea chitosan were obtained after an exess adition of NaOH. The adsorption capacity of the product for cadmium (II) and nickel (II) were tested at several metal concentrations of different values of pH. A Langmuir model for adsorption isotherm is applied for comparing the adsorption properties of the two metals investigated.</p
Uji Kualitas Air Minum Pada Depot Air Minum Isi Ulang Di Desa Lala Kecamatan Namlea Kabupaten Buru Tahun 2019: (Testing the Quality of Drinking Water in A Refilled Drinking Water Depot in Lala Village, Buru Regency 2019)
No full textResearch has been carried out which aims to determine the quality of drinking water in refill drinking water in Lala Village, Namlea District, Buru Regency. This type of research is quantitative descriptive with a laboratory experimental approach which aims to obtain an overview of the content of Escherichia coli and calcium carbonate (CaCO3) bacteria in refill drinking water. Based on the results of the study, it was found that for the biological quality of drinking water samples at the refill drinking water depot in Lala Village there were two polluted refill drinking water depots and were detected to have an average total Escherichia coli in sample I was 5/100 ml and sample II 5/100 ml. As for the chemical quality, it shows that all drinking water samples consist of 4 samples, the hardness as CaCO3 is still within the normal limit, namely 200.927 to 285.007 mg / l. So it can be concluded that all refill drinking water depots in Lala Village are safe for CaCO3 hardness, while for the biological quality of depot I and depot II are not suitable for consumption
ADLER PÉTER SZTOMATOLÓGUS PROFESSZOR ELFELEJTETT HÁBORÚS VISSZAEMLÉKEZÉSE
No full textUnexpectedly, during the summer of 2021, we obtained the book legacy of Professor Péter Adler. Professor Adler was the leader of the Stomatology Clinic between 1946-1978 in Debrecen and he was an internationally recognized specialist. As part of the legacy, we also received an American dental journal. The issue of 1947, which included an anonymous article written by a Hungarian dentist. It reports on his ordeal during the years of the 2nd World War. It is clear from the data and descriptions that Professor Péter Adler wrote the publication. It is a thought-provoking reading, but it shows of course a somewhat subjective approach and it should be noted that it was written for foreigners, primarily Americans. Its peculiarity is that it has not appeared up till now anywhere in Hungarian - as far as I know. His publication at the time can be dated to the beginning of the Cold War, which may explain why the author requested anonymity. The article contains important gap-filling information for the better understanding of the era.2021 nyarán -váratlanul- Adler Péter professzor könyvhagyatékához jutottunk. Adler professzor 1946-1978 között vezette a debreceni Stomatológiai Klinikát, és nemzetközileg elismert szaktekintély volt. A hagyaték részeként kaptunk egy amerikai fogászati folyóiratot is, melynek 1947-es száma tartalmazott egy névtelenül közölt cikket, mely egy magyar fogorvos II. világháborús kálváriájáról számol be. Az adatokból és a leírásokból egyértelműen kiderül, hogy Adler Péter professzor írta a közleményt. Érdekes olvasmány, mely természetesen kissé szubjektív megközelítésű és figyelembe kell venni, hogy külföldieknek, elsősorban amerikaiaknak íródott. Különlegessége, hogy magyarul eddig -tudtommal- sehol sem jelent meg. Akkori közlése a hidegháború kezdetére datálható, mely esetleg magyarázatot ad arra, hogy miért kérte a szerző az anonimitást. A cikk olyan fontos hiánypótló információkat tartalmaz, melyek révén hozzájárulhat a korszak jobb megismeréséhez.
 
Comprehension To Village
No full textIt has become very clear, where almost all “village” ontologies emphasize more on the existence of an area / region, as well as the recognition of values inherent in activities, and tend to be made different, especially administratively. We certainly do not deny that administratively the distinction between Village and non-village is needed to facilitate the identification and resolution of problems. But in fact, we find that many villages are more interpreted as something that is not the same as other regions in terms of socio-cultural economic justice and even public policy. So the administrative differentiation then decreases to the distinction between the attitudes of anyone trying to understand the village
