58 research outputs found
MENENTUKAN KESTABILAN NUKLIDA-NUKLIDA BERDASARKAN MASSA INTI PER NUKLEON
No full textKestabilan nuklida dapat ditentukan oleh rasio jumlah neutron terhadap jumlah protonnya (n/p) atau defek massa (Δm) yang dapat dikonversikan menjadi energi ikat inti (Eb). Dalam artikel ini, kami mempelajari kemungkinan menentukan kestabilan nuklida-nuklida berdasarkan massa inti per nukleon (m/A). Metode yang digunakan adalah pencocokan pola kelimpahan unsur-unsur di sistem tata surya dengan pola harga m/A nuklida tiap unsur dan hasilnya dibandingkan dengan pola energi ikat inti per nukleon (Eb/A)-nya. Terdapat kecenderungan nilai m/A yang berbanding terbalik terhadap nilai Eb/A, sehingga m/A dapat diperkirakan akan berbanding terbalik dengan peringkat kestabilan inti. Dengan membandingkan kelimpahan pasangan-pasangan unsur yang memiliki nomor atom yang berurutan dari 77 nuklida terpilih, diperoleh hasil bahwa 93,5% pasang nuklida-nuklida cocok dengan kebalikan urutan nilai-nilai m/A-nya dan 68,8% cocok dengan urutan nilai-nilai Eb/A-nya. m/A juga memiliki korelasi berbanding terbalik dengan Eb/A yang dapat dinyatakan sebagai Eb/A = -901,76(m/A) + 909,32 (R2 = 0,9986). Oleh karena itu, dapat disimpulkan bahwa harga m/A dapat dipertimbangkan untuk menentukan urutan tingkat kestabilan inti nuklida dan dapat dihubungkan dengan Eb/A jika nilai m/A dinyatakan dalam satuan energi
FIKIH (FIQH) AIR DAN TANAH DALAM TAHARAH (THAHARAH) MENURUT PERSPEKTIF ILMU KIMIA
No full textIlmu kimia merupakan ilmu alam yang mempelajari sifat-sifat benda dan
perubahannya. Karena objek studinya itu, fikih air dan tanah dalam taharah dapat didekati pemahamannya melalui perspektif ilmu kimia. Batasan volume air tergenang dan air mengalir untuk wudhu dipahami agar air tetap bersih dan
memberikan efek pembersihan (penyucian) dan sebagai antisipasi penggunaan air yang tercemar. Dalam air yang volumenya lebih banyak memungkinkan air dapat mengencerkan konsentrasi najis dan polutan lainnya, sedangkan dalam air yang mengalir memungkinkan air mendapatkan suplai oksigen lebih banyak dan menambah kemungkinan pelepasan zat-zat volatil berbahaya dari badan air. Analog dengan debu tanah untuk tayamum, debu tanah yang digunakan adalah debu tanah yang bersih karena memiliki daya pembersihan terhadap hal-hal yang dapat mengganggu kesehatan kulit, terutama wajah dan tangan. Lebih lanjut, penggunaan tanah dalam penyucian benda yang dijilat anjing menunjukkan makna tanah sesungguhnya berdasarkan representasi kandungan utama tanah itu sendiri, yakni mineral-mineral silika, silikat dan aluminosilikat
Paradigma al-Qur'an tentang implikasi shalat dalam korelasinya dengan kesehatan fisik dan psikis terhadap individu muslim
No full textThe increased use value of bamboo leaves as silica source for t-type zeolite synthesis
No full textT-type zeolite can be used as catalyst, adsorbent, and membranes for gas separation. The synthesis
of T-type zeolite needs to be optimized in both of the method and source of precursor, because of its relatively
high price. In this research, the synthesis is done using silica extracted from bamboo leaves instead of
commercial silica. This increases the value of the bamboo leaves and the cost-performance of zeolite synthesis.
The silica was extracted from bamboo leaves ash using alkaline solvent. The extracted silica has 81.76% of
purity and an amorphous phase. The T-type zeolite was synthesized using the molar composition of 0.15 Na2O
: 0.025 Al : 0.15 K2O : 1 SiO2 : 15 H2O : 0.06 TMAOH, under hydrothermal method and heating process for 4
days, 60°C for 2 days and 120°C for the next 2 days. The characterization method using X-Ray Diffraction and
Infra-Red Spectroscopy were performed to confirm the formation of T-type zeolite. The results of Scanning
Electron Microscope (SEM) analysis show that the formed T-type zeolite has erionite cylindrical crystal shape
MENINJAU BUKTI ILMIAH KEKUATAN BESI MENURUT CARA PANDANG ILMU KIMIA DAN SAINS YANG BERKAITAN BESERTA BEBERAPA KONSEKUENSINYA SEBAGAIMANA DISEBUT DALAM AL QURAN QS. AL HADIID:25
No full textKauniyah verses of iron in the Qur\u27an Surah Al Hadiid, Verse 25, in particular, has not been widely studied in the perspective of chemistry, let the problems associated with its implementation according to what is listed in the verse. In this paper, we discussed about of “great strength of iron†in the verse from the viewpoint of modern chemistry supported with findings of iron in other scientific disciplines are closely related with, as in Geology, Physics, Biology and Materials Science. In this paper, we also discussed the meaning of the next sentence of the verse "...and that Allah may know who is helping (religion) Him and His apostles but God has not seen." The discussion is limited to a review of the nuclear chemistry (nuclides), chemical structure, magnetic, and chemical bonding properties. We can be concluded that the iron does have remarkable properties leading to iron predicate as stated in the verse. The facts of iron are following: (1) Iron is an element with isotopes that have the most stable nucleus of all the existing elements; (2) Iron has metal structure (polymorph) that adaptive to the presence of other metal/s or elements in its structure, so it can be made many variations of steel/alloy; (3) Iron has the strongest magnetic effect on life on earth; and (4) The nature of the bonds formed between the iron with organic compounds of iron proved a major role in biochemical processes. Finally, the great strength of the iron phenomenon has consequences as a reflection of Muslims in order to use it in various forms that lead to the establishment of Islamic symbols
THE EFFECTIVITY OF THE APPLICATION TECHNICAL PROBING PROMPTING ON STORY PROBLEMS IS REVIEWED FROM MATHEMATICAL CREATIVE THINKING SKILLS TO HIGH SCHOOL STUDENT
No full textThis article present the results of research in the form of effectiveness using probing prompting techniques and experimental research methods with desain pre experimental : one-shot case study design by purposive sampling conducted on class X students in the 2018/2019 academic year on mathematical questions in the form of story problems. While the objectives of this study include exposing the effectiveness of mathematical creative thinking abilities of students using probing promting techniques, obtaining a number of descriptions of students problems in the process of creative thinking in mathematical questions form of story matter. Based on data analysis the results of the study showed that the percentage of students who have good mathematical creative thinking skills is less than 60%, so the probing prompting technique is not effective in terms of mathematical creative thinking abilities students
Analisis pengaruh pelaksanaan surat perintah melaksanaan penyitaan (SPMP) dan pengumuman lelang terhadap pencairan tunggakan pajak : studi kasus pada KPP Pratama Jakarta Tanah Abang Satu
No full textMENINJAU BUKTI ILMIAH KEKUATAN BESI MENURUT CARA PANDANG ILMU KIMIA DAN SAINS YANG BERKAITAN BESERTA BEBERAPA KONSEKUENSINYA SEBAGAIMANA DISEBUT DALAM AL QURAN QS. AL HADIID:25
No full textKauniyah verses of iron in the Qur\u27an Surah Al Hadiid, Verse 25, in particular, has not been widely studied in the perspective of chemistry, let the problems associated with its implementation according to what is listed in the verse. In this paper, we discussed about of “great strength of iron†in the verse from the viewpoint of modern chemistry supported with findings of iron in other scientific disciplines are closely related with, as in Geology, Physics, Biology and Materials Science. In this paper, we also discussed the meaning of the next sentence of the verse "...and that Allah may know who is helping (religion) Him and His apostles but God has not seen." The discussion is limited to a review of the nuclear chemistry (nuclides), chemical structure, magnetic, and chemical bonding properties. We can be concluded that the iron does have remarkable properties leading to iron predicate as stated in the verse. The facts of iron are following: (1) Iron is an element with isotopes that have the most stable nucleus of all the existing elements; (2) Iron has metal structure (polymorph) that adaptive to the presence of other metal/s or elements in its structure, so it can be made many variations of steel/alloy; (3) Iron has the strongest magnetic effect on life on earth; and (4) The nature of the bonds formed between the iron with organic compounds of iron proved a major role in biochemical processes. Finally, the great strength of the iron phenomenon has consequences as a reflection of Muslims in order to use it in various forms that lead to the establishment of Islamic symbols
Sanksi Hukum Pelaku Tindak Pidana Korupsi pengadaan segel surat suara Pemilu Legislatif dan Pilpres Tahap I dan II yang Terjadi di Komisi Pemilihan Umum
No full textAdapun yang menjadi rumusan masalah adalah, mengapa majelis hakim pengadilan tindak pidana korupsi memberikan sanksi hukum 4 tahun terhadap pelaku tindak pidana korupsi pengadaan segel surat suara pemilu legislatif dan pilpres tahap I dan II yang terjadi di Komisi Pemilhan Umum, sarta alasan-alasan jaksa penuntut umum mengajukan upaya hukum banding dan kasasi, sehubungan putusan hakim pengadilan tindak pidana korupsi pada pengadilan negeri Jakarta Pusat tersebut. Mengenai manfaat penelitian penulis menggunakan manfaat praktis dan manfaat teoritis, sedangkan kerangka teori yang penulis gunakan adalah pengertian tindak pidana korupsi, sebab-sebab korupsi, sanksi hukum, dan teori-teori pemidanaan
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