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All Journal Program Kreativitas Mahasiswa - Penelitian Communications in Science and Technology Journal of Midwifery Science and Women's Health (JMSWH)
Uswatul Chasanah, Uswatul
Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sebelas Maret
Engineering Health Professions Nursing Public Health

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PERANAN ZEOLIT NANOPORI TERMODIFIKASI SEBAGAI MATERIAL PENGONTROL PELEPASAN PUPUK UREA Hidayat, Rahmat; Fadillah, Ganjar; Chasanah, Uswatul; Wahyuningsih, Sayekti
Program Kreativitas Mahasiswa - Penelitian PKM-P 2014
Publisher : Ditlitabmas, Ditjen DIKTI, Kemdikbud RI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (388.306 KB)

Abstract

Effectiveness of catalyst zeolite nanoporous as a slow release fertilizer of nitrogen from urea has been researched. In this study, natural zeolite was activated by HF 1%  with a calsination temperature at 120oC and the surface of zeolite was modified by aminopropyltrimethoxysilane (APTMS) 5%. Zeolite activation was characterized by X-ray diffraction spectroscopy (XRD) and Surface Area Analyzer (SAA) while the modified zeolite was characterized by infrared spectroscopy (FTIR), Surface Area Analyzer (SAA) and UV-Vis spectroscopy. The results of the material characterization of zeolite-APTMS obtained size pore of 7,74 nm with a maximum adsorption capacity of urea was 3.668 mg/g. Slow release urea test  from zeolite-APTMS performed by observing the absorbance of the urea at a wavelength of 195 nm with a variation of time 0, 5,10,20,40,60,80,100 and 120 minutes The test of fertilizers in the soil is directly done by observing changes pH and release of NH4+ in the incubation time of 14 days. The results show that urea without zeolite will be released 100% in the 120 minute and zeolite-APTMS aqueous solution at minute 120 only released about 56,24%. While the application of fertilizers in the soil is directly obtained that urea with zeolite having a pH decrease slowly compared to urea without zeolite. It is addressed that the zeolite-APTMS potentially be developed as a release control material of nitrogen from urea is caused due to the ability of the zeolite to absorb urea-APTMS temporarily in the pore and hydrogen bonding interactions between the urea and N-H from APTMS. Keywords:  zeolite, zeolite-APTMS, urea, slow release fertilizer
MODEL ABDOMEN MATERNITY SEBAGAI MEDIA PEMBELAJARAN KLINIS DALAM MENCAPAI KOMPETENSI ASUHAN KEBIDANAN PADA IBU HAMIL: MATERNITY ABDOMEN MODEL AS A CLINICAL LEARNING TOOL TO ACHIEVE COMPETENCE IN MIDWIFERY CARE FOR PREGNANT WOMEN Dwi Astuti, Jujun; Nuraenah, Een; Chasanah, Uswatul
Journal of Midwifery Science and Women's Health Vol. 4 No. 2 (2024): JMSWH
Publisher : Jurusan Kebidanan Poltekkes Kemenkes Jakarta I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36082/jmswh.v4i2.1429

Abstract

Tersedianya Manikin maternity model abdominal kehamilan terbuat dari bahan silikon yang serupa dengan perut ibu hamil asli yang dilengkapi dengan audio detak jantung janin (DJJ) sekitar 110 - 180 x/mnt, dapat memenuhi kriteria teknologi dan capaian kompetensi pada mata kuliah perawatan kehamilan yang harus dicapai oleh mahasiswa kebidanan. Tujuan penelitian ini untuk mengetahui efektivitas manikin maternity model perut dalam meningkatkan kompetensi siswa kebidanan untuk melakukan pemeriksaan leopold pada ibu hamil dan mengenali audio pencatatan jantung janin. Jenis penelitian ini kuantitatif, dengan desain penelitian quasi eksperimen. Penelitian dilakukan pada dua kelompok, yaitu kelompok perlakuan dan kelompok kontrol. Populasi penelitian ini seluruh mahasiswa Prodi D III Kebidanan di Poltekkes Kemenkes Jakarta III. Sampel adalah sebagian mahasiswa Prodi D III Kebidanan Semester III dan V dengan jumlah sampel sebanyak 120 orang. Kelompok perlakuan adalah sebagian siswa yang diberikan pendampingan, sedangkan kelompok kontrol adalah sebagian siswa tanpa pendampingan dalam menggunakan manikin maternity, teknik pengambilan sampel secara purposive sampling, pengumpulan data dilakukan melalui kuesioner dan observasi, jenis data pada penelitian adalah data primer. Analisis data menggunakan data Kai Kuadrat, T-tes dan Regresi Logistik.
Study of green reductant effects of highly reduced graphene oxide production and their characteristics Chasanah, Uswatul; Trisunaryanti, Wega; Triyono; Oktaviano, Haryo Satriya; Santoso, Iman; Fatmawati, Dyah Ayu
Communications in Science and Technology Vol 7 No 2 (2022)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.7.2.2022.906

Abstract

The study of the green reductant effects to produce reduced graphene oxide (rGO) has been completed successfully. The reduction of graphene oxide (GO) was carried out chemically using various reductants such as ascorbic acid (rGO-AA), gallic acid (rGO-AG), and trisodium citrate (rGO-NS). The GO was prepared using the Tour method at a temperature of 65 ? for 6 hours with potassium permanganate: graphite weight ratio 1:3.5. The results showed that rGO-AA had the highest electrical conductivity value of 755.70 S/m, with characteristics such as a surface area of 255.93 m2/g, a pore volume of 0.61 cm3/g, an average pore diameter of 7.10 nm, ID/IG ratio of 1.93, and three graphene layers in the material nanostructure stack. Therefore, it can be concluded that the reduction of GO with ascorbic acid (rGO-AA) is the most effective in producing rGO.
Co-Authors Aminuyati Dwi Astuti, Jujun Fatmawati, Dyah Ayu Ganjar Fadillah, Ganjar Haryo Satriya Oktaviano Nuraenah, Een Rahmat Hidayat Sayekti Wahyuningsih Triyono Wega Trisunaryanti