PEMBUATAN SARANA PEMBUDIDAYAAN CACING SUTRA DI PONDOK PESANTREN JAMIA’TUL ISLAMIYAH SEBAGAI PAKAN BIBIT LELE

ABSTRAKPesantren Jami'atul Islamiyah yang berlokasi di Jl. Sultan Hasanudin, Kariangau, Kec. Balikpapan Barat, Kota Balikpapan, Kalimantan Timur. Pondok Pesantren Jami'atul Islamiyah membutuhkan metode penggantian pakan pelet untuk budidaya ikan lele agar dapat menekan pengeluaran biaya. Dengan berdasar permasalahan tersebut yang dialami oleh pihak mitra. Kegiatan pengabdian kepada masyarakat dilakukan untuk memberikan solusi dan menyelesaikan permasalahan yang dihadapi mitra. Usulan solusi yang diberikan adalah membuat prototype budidaya ulat sutera di Pondok Pesantren Jami'atul Islamiyah. Pemilihan ulat sutera sebagai solusi penganti pakan, karena ulat sutera merupakan salah satu makanan bergizi bagi ikan lele. Ulat sutera mudah dibudidayakan, karena ulat sutera membutuhkan sangat sedikit oksigen untuk berkembang. Metode yang digunakan adalah: sosialisasi dan observasi, pembuatan fasilitas ulat sutera, pelatihan dan monitoring. Luaran dari kegiatan ini berupa prototype media budidaya ulat sutera yang diberikan kepada mitra binaan. Kata kunci: pakan ikan; jami'atul islamiyah; cacing sutra. ABSTRACTJami'atul Islamiyah Islamic Boarding School which is located on Jl. Sultan Hasanudin, Kariangau, Kec. West Balikpapan, Balikpapan City, East Kalimantan. Jami'atul Islamiyah Islamic Boarding School requires replacement of pellet feed for catfish cultivation in order to reduce costs. On the basis of these problems experienced by the partners. Community service activities are carried out to provide solutions and resolve problems faced by partners. The proposed solution is to make a prototype of silkworm cultivation at the Jami'atul Islamiyah Islamic Boarding School. The selection of silkworms as a feed replacement solution, because silkworms are one of the nutritious foods for catfish. Silkworms are easy to cultivate, because silkworms require very little oxygen to thrive. The methods used are: socialization and observation, making silkworm facilities, training and monitoring. The output of this activity is in the form of prototype media for silkworm cultivation given to fostered partners. Keywords: feeding on catfish; jami'atul islamiyah; silkworms

Ferrocene-Based Nonphosphorus Copolymer: Synthesis, High-Charring Mechanism, and Its Application in Fire Retardant Epoxy Resin

A novel nonphosphorus copolymer poly((3,3′-diphenyl diacetylethylenediamino)-1,1′-ferrocene) (PDPFDE) was synthesized, with the aim of reducing the fire hazards of epoxy resin (EP), via an aza-Michael addition reaction and was well characterized. A high char yield of about 62.9 wt % was obtained for PDPFDE from thermogravimetric analysis results, and a charring mechanism has been suggested that involves iron-cored carbon nanotubes as catalysts. An EP composite containing 5.0 wt % PDPFDE reached a low limiting oxygen index value of 29.1% and V-1 rating in the UL-94 test. On comparison with neat EP, the peak of the heat release rate and the total smoke production of the composite were reduced by 36.0% and 24.0%, respectively. Scanning electron microscopy and energy dispersive X-ray analysis results indicated the formation of coherent, dense, and nitrogen-rich char residues due to the incorporation of PDPFDE. Furthermore, the addition of an appropriate amount of PDPFDE improved the mechanical properties compared to pure EP

Complications of mechanical thrombectomy for acute ischemic stroke: Incidence, risk factors, and clinical relevance in the Italian Registry of Endovascular Treatment in acute stroke

BACKGROUND: There are limited data concerning procedure-related complications of endovascular thrombectomy for large vessel occlusion strokes. AIMS: We evaluated the cumulative incidence, the clinical relevance in terms of increased disability and mortality, and risk factors for complications. METHODS: From January 2011 to December 2017, 4799 patients were enrolled by 36 centers in the Italian Registry of Endovascular Stroke Treatment. Data on demographic and procedural characteristics, complications, and clinical outcome at three months were prospectively collected. RESULTS: The complications cumulative incidence was 201 per 1000 patients undergoing endovascular thrombectomy. Ongoing antiplatelet therapy (p < 0.01; OR 1.82, 95% CI: 1.21-2.73) and large vessel occlusion site (carotid-T, p < 0.03; OR 3.05, 95% CI: 1.13-8.19; M2-segment-MCA, p < 0.01; OR 4.54, 95% CI: 1.66-12.44) were associated with a higher risk of subarachnoid hemorrhage/arterial perforation. Thrombectomy alone (p < 0.01; OR 0.50, 95% CI: 0.31-0.83) and younger age (p < 0.04; OR 0.98, 95% CI: 0.97-0.99) revealed a lower risk of developing dissection. M2-segment-MCA occlusion (p < 0.01; OR 0.35, 95% CI: 0.19-0.64) and hypertension (p < 0.04; OR 0.77, 95% CI: 0.6-0.98) were less related to clot embolization. Higher NIHSS at onset (p < 0.01; OR 1.04, 95% CI: 1.02-1.06), longer groin-to-reperfusion time (p < 0.01; OR 1.05, 95% CI: 1.02-1.07), diabetes (p < 0.01; OR 1.67, 95% CI: 1.25-2.23), and LVO site (carotid-T, p < 0.01; OR 1.96, 95% CI: 1.26-3.05; M2-segment-MCA, p < 0.02; OR 1.62, 95% CI: 1.08-2.42) were associated with a higher risk of developing symptomatic intracerebral hemorrhage compared to no/asymptomatic intracerebral hemorrhage. The subgroup of patients treated with thrombectomy alone presented a lower risk of symptomatic intracerebral hemorrhage (p < 0.01; OR 0.70; 95% CI: 0.55-0.90). Subarachnoid hemorrhage/arterial perforation and symptomatic intracerebral hemorrhage after endovascular thrombectomy worsen both functional independence and mortality at three-month follow-up (p < 0.01). Distal embolization is associated with neurological deterioration (p < 0.01), while arterial dissection did not affect clinical outcome at follow-up. CONCLUSIONS: Complications globally considered are not uncommon and may result in poor clinical outcome. Early recognition of risk factors might help to prevent complications and manage them appropriately in order to maximize endovascular thrombectomy benefits

Technology Transfers and the Clean Development Mechanism in a North-South General Equilibrium Model

This paper analyzes the potential welfare gains of introducing a technology transfer from Annex I to non-Annex I in order to mitigate greenhouse gas emissions. Our analysis is based on a numerical general equilibrium model for a world economy comprising two regions, North (Annex I) and South (non-Annex I). As our model allows for labor mobility between the formal and informal sectors in the South, we are also able to capture additional aspects of how the transfer influences the Southern economy. In a cooperative equilibrium, a technology transfer from the North to the South is clearly desirable from the perspective of a global social planner, since the welfare gain for the South outweighs the welfare loss for the North. However, if the regions do not cooperate, then the incentives to introduce the technology transfer appear to be relatively weak from the perspective of the North; at least if we allow for Southern abatement in the pre-transfer Nash equilibrium. Finally, by adding the emission reductions associated with the Kyoto agreement to an otherwise uncontrolled market economy, the technology transfer leads to higher welfare in both regions

Challenges Toward Wireless Communications for High-Speed Railway

High-speed railway (HSR) brings convenience to peoples\u27 lives and is generally considered as one of the most sustainable developments for ground transportation. One of the important parts of HSR construction is the signaling system, which is also called the “operation control system,” where wireless communications play a key role in the transmission of train control data. We discuss in detail the main differences in scientific research for wireless communications between the HSR operation scenarios and the conventional public land mobile scenarios. The latest research progress in wireless channel modeling in viaducts, cuttings, and tunnels scenarios are discussed. The characteristics of nonstationary channel and the line-of-sight (LOS) sparse and LOS multiple-input-multiple-output channels, which are the typical channels in HSR scenarios, are analyzed. Some novel concepts such as composite transportation and key challenging techniques such as train-to-train communication, vacuum maglev train techniques, the security for HSR, and the fifth-generation wireless communications related techniques for future HSR development for safer, more comfortable, and more secure HSR operation are also discussed