Pengendalian Kerusakan Lingkungan Atas Perizinan Migas Di Kabupaten Banggai Berdasarkan Undang-undang Nomor 32 Tahun 2009 Tentang Perlindungan Dan Pengelolaan Lingkungan Hidup

Masuknya kegiatan USAha Perusahaan PT. DS-LNG (Donggi-Senoro Liquid Natural Gas) di Kecamatan Batui kabupaten Banggai Provinsi Sulawesi Tengah diharapkan dapat mampu mendorong peningkatan pendapatan regional maupun nasional. Pembangunan proyek pengembangan Gas itu dibagi dengan dua konsep yaitu sektor hulu dan sektor hilir. Adapun dalam penulisan ini, penulis mengangkat judul “Pengendalian Kerusakan Lingkungan Atas Perizinan Migas Di Kabupaten Banggai Berdasarkan Undang-Undang Nomor 32 Tahun 2009 Tentang Perlindungan Dan Pengelolaan Lingkungan Hidup.TerkaitUndang-Undang Nomor 32 Tahun 2009 tentang perlindungan dan pengendalian lingkungan hidup di mana UU tersebut berfungsi sebagai instrumen hukum, khususnya kegiatan USAha yang dilakukan oleh DS-LNG yang akan menimbulkan risiko positif ataupun negatif.Dari uraian di atas, penulis mencoba mangangkat masalah: (1) Apakah kegiatan pengolahan proyek pengembangan Gas DS-LNG berisiko menimbulkan dampak bagi lingkungan dan masyarakat; (2) Bagaimana pengendalian dan pencegahan kerusakan lingkungan atas pengolahan Gas oleh DS-LNG menurut Undang-Undang Nomor 32 Tahun 2009 tentang perlindungan dan pengendalian lingkungan hidup. Dalam penelitian ini, penulis menggunakan metode penelitian yuridis normatif. Dimana metode penelitian ini mengkaji asas-asas hukum dan sistematika hukum. Tehnik pengumpulan data dilakukan melalui studi kepustakaan berupa bahan hukum primer, sekunder, maupun tersier. Semua data kepustakaan dikumpulkan, kemudian dianalisis dan hasilnya dituangkan dalam bentuk deskriptif.Jadi berdasarkan hasil analisis penulis, maka dapat ditarik satu benang merah bahwa proyek pengembangan Gas DS-LNG dapat menimbulkan risiko negatif maupun positif

High-Ampacity Power Cables of Tightly-Packed and Aligned Carbon Nanotubes

We characterize the current-carrying capacity (CCC), or ampacity, of highly-conductive, light, and strong carbon nanotube (CNT) fibers by measuring their failure current density (FCD) and continuous current rating (CCR) values. We show, both experimentally and theoretically, that the CCC of these fibers is determined by the balance between current-induced Joule heating and heat exchange with the surroundings. The measured FCD values of the fibers range from 10$^7$ to 10$^9$ A/m$^2$ and are generally higher than the previously reported values for aligned buckypapers, carbon fibers, and CNT fibers. To our knowledge, this is the first time the CCR for a CNT fiber has been reported. We demonstrate that the specific CCC (i.e., normalized by the linear mass density) of our CNT fibers are higher than those of copper.Comment: 14 pages, 8 figure

Stability of 1-D Excitons in Carbon Nanotubes under High Laser Excitations

Through ultrafast pump-probe spectroscopy with intense pump pulses and a wide continuum probe, we show that interband exciton peaks in single-walled carbon nanotubes (SWNTs) are extremely stable under high laser excitations. Estimates of the initial densities of excitons from the excitation conditions, combined with recent theoretical calculations of exciton Bohr radii for SWNTs, suggest that their positions do not change at all even near the Mott density. In addition, we found that the presence of lowest-subband excitons broadens all absorption peaks, including those in the second-subband range, which provides a consistent explanation for the complex spectral dependence of pump-probe signals reported for SWNTs.Comment: 4 pages, 4 figure

Autophagosome formation is initiated at phosphatidylinositol synthase‐enriched ER subdomains

The autophagosome, a double‐membrane structure mediating degradation of cytoplasmic materials by macroautophagy, is formed in close proximity to the endoplasmic reticulum (ER). However, how the ER membrane is involved in autophagy initiation and to which membrane structures the autophagy‐initiation complex is localized have not been fully characterized. Here, we were able to biochemically analyze autophagic intermediate membranes and show that the autophagy‐initiation complex containing ULK and FIP200 first associates with the ER membrane. To further characterize the ER subdomain, we screened phospholipid biosynthetic enzymes and found that the autophagy‐initiation complex localizes to phosphatidylinositol synthase (PIS)‐enriched ER subdomains. Then, the initiation complex translocates to the ATG9A‐positive autophagosome precursors in a PI3P‐dependent manner. Depletion of phosphatidylinositol (PI) by targeting bacterial PI‐specific phospholipase C to the PIS domain impairs recruitment of downstream autophagy factors and autophagosome formation. These findings suggest that the autophagy‐initiation complex, the PIS‐enriched ER subdomain, and ATG9A vesicles together initiate autophagosome formation