The supply response of rainfed agricultural crops to price changes in South Darfur State, Sudan

The objective of this study is to examine the supply response of rainfed agricultural crops to price changes in South Darfur State. The study was based on data collected for the period 1987- 2004. The data included area, production, rainfall, and relative prices. The analysis of data was based on the Nerlovian partial adjustment model. The results revealed that the supply response of individual crops was positive but generally low in the short-run and fairly high in the long-run. These results could be a useful tool for policies intended to enhance the production efficiency of rainfed agriculture in the State. The study also demonstrated the importance of having adequate and timely adoption of agricultural technology to promote the low response of individual crops and to maintain a sustainable food security for the State

Evaluasi Kesesuaian Lahan Kualitatif dan Kuantitatif Pertanaman Nanas (Ananas Comosus [L] Merr) Kelompok Tani Makmur di Desa Astomulyo Kecamatan Punggur Kabupaten Lampung Tengah

Nanas (Ananas comosus (L) Merr) merupakan tanaman hortikultura yang banyak dibudidayakan di Kabupaten Lampung Tengah. Budidaya tanaman nanas (Ananas comosus (L) Merr) dinilai akan sangat menguntungkan, mengingat dengan biayaproduksi yang tidak terlalu mahal serta kebutuhan masyarakat akan buah nanas semakin meningkat. Untuk mengoptimalkan hasil produksi, daya dukung, potensi dan hambatan yang ada untuk suatu penggunaan lahan tertentu dalam budidaya harus kita ketahui, untuk itu dilakukan evaluasi lahan. Penelitian ini bertujuan untuk mengevaluasi kesesuaian lahan kualitatif dan kuantitatif pada pertanaman nanas (Ananas comosus (L) Merr) Kelompok Tani Makmur Desa Astomulyo KecamatanPunggur Kabupaten Lampung Tengah. Evaluasi kesesuaian lahan kualitatif dilakukan menggunakan kriteria biofisik menurut Djaenuddin dkk. (2011), sedangkan penilaian secara kuantitatif adalah dengan menganalisa kelayakan finansial budidaya tanaman nanas dengan menghitung nilai NPV, Net B/C Ratio, IRR dan BEP. Hasil penelitian menunjukkan bahwa lahan pertanaman nanas (Ananas comosus (L) Merr) Kelompok Tani Makmur Desa Astomulyo termasuk ke dalam kelas kesesuaian lahan sesuai marginal dengan faktor pembatas ketersediaan air (S3wa), dan secara finansial menunjukkan bahwa nilai NPV sebesar Rp113.896.094,- , Net B/C sebesar 5,48, IRRsebesar 219%tahun -1 dan BEP (titik impas) akan dicapai dalam waktu 1 tahun 11 bulan 1 hari.Hal ini menunjukkan bahwa USAha budidaya tanaman nanas ini menguntungkan dan layak untuk dikembangkan

Chemical Composition and Antioxidant Activity of seeds oils and fruit juice of Opuntia Ficus Indica and Opuntia Dillenii from Morocco

peer reviewedThis study provides basic information on the mineral composition of the seeds and antioxidant activity in seeds oils and fruit juices of cactus belonging to two species Opuntia ficus indica and Opuntia dillenii, from Morocco (Oujda), in order to evaluate the nutritional value of the Opuntia extracts. Minerals determined from dry seeds of Opuntia ficus indica and Opuntia dillenii were: calcium 480.93 and 408.28; phosphorus 1417.59 and 970.15; potassium 304.51 and 201.96; magnesium: 316.59 and 240.30; sodium: 48.33 and 18.18; zinc: 70.77 and 78.26 mg/100g respectively. The main fatty acids of Opuntia ficus indica and Opuntia dillenii seed oil were respectively: linoleic acid: 58.79 and 79.83%, Palmitic acid: 11.18 and 13.52%. The antioxidant activity of Opuntia ficus indica and Opuntia dillenii seed oils and fruit juices were assessed by means of 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay and ascorbic acid test. The results showed that the antioxidant activities of Opuntia ficus indica and Opuntia dillenii seed oil (IC50 = 19.79 ± 0.023 and 27.21 ± 0.075 μL/mL) are higher than that of the reference ascorbic acid (IC50 = 16.56 ± 0.019 μg/mL). However, the Opuntia dillenii juice presents antioxidant activity more important than this of Opuntia seed oil and ascorbic acid. It possessed strong antioxidant activity (IC50 = 8.18 μL/mL). The antioxidant activity of the seed oil and juice were also found to be concentration-dependent

Quantum Coherence Oscillations in Antiferromagnetic Chains

Macroscopic quantum coherence oscillations in mesoscopic antiferromagnets may appear when the anisotropy potential creates a barrier between the antiferromagnetic states with opposite orientations of the Neel vector. This phenomenon is studied for the physical situation of the nuclear spin system of eight Xe atoms arranged on a magnetic surface along a chain. The oscillation period is calculated as a function of the chain constant. The environmental decoherence effects at finite temperature are accounted assuming a dipole coupling between the spin chain and the fluctuating magnetic field of the surface. The numerical calculations indicate that the oscillations are damped by a rate $\sim (N-1)/ \tau$, where $N$ is the number of spins and $\tau$ is the relaxation time of a single spin.Comment: 10 pages, Latex, two postscript figures; submitted to Phys. Rev.

Manajemen komunikasi : Implementasi keterbukaan informasi publik

Sejak lahir Undang-Undang No. 14 Tahun 2008 tentang Keterbukaan Informasi Publik, terdapat kewajiban “tambahan” Badan Publik dalam memberikan pelayanan kepada publik. Layanan yang pokok dan merupakan amanah dari undang-undang tersebut adalah memberikan informasi publik. Setiap Badan Publik, baik Pemerintah maupun non-Pemerintah harus dapat mengelola informasi yang baik dalam kerangka memberikan pelayanan terbaik kepada publik. Dalam konteks keilmuan Komunikasi, mengelola layanan informasi merupakan bagian kajian manajemen komunikasi. Oleh karena itu, buku ini merupakan hasil kajian atas pemahaman terhadap implementasikan peraturan perundang-undangan keterbukaan informasi publik dengan menggunakan pendekatan Manajemen Komunikasi, sehingga berjudul Manajemen Komunikasi: Implementasi Keterbukaan Informasi Publik. Dalam paparan bab per bab dijelaskan secara teoretis tentang Manajemen Komunikasi yang diperdalam dengan implementasi dari peraturan perundang-undangan Keterbukaan Informasi Publik. Hal itu menjadi kelebihan buku ini karena dapat menjadi pedoman bagi Badan Publik untuk mengelola informasi yang sesuai dengan peraturan perundang-undangan sekaligus juga sejalan dengan kajian keilmian Manajemen Komunikasi

The liquid to vapor phase transition in excited nuclei

For many years it has been speculated that excited nuclei would undergo a liquid to vapor phase transition. For even longer, it has been known that clusterization in a vapor carries direct information on the liquid- vapor equilibrium according to Fisher's droplet model. Now the thermal component of the 8 GeV/c pion + 197Au multifragmentation data of the ISiS Collaboration is shown to follow the scaling predicted by Fisher's model, thus providing the strongest evidence yet of the liquid to vapor phase transition.Comment: four pages, four figures, first two in color (corrected typo in Ref. [26], corrected error in Fig. 4

Searching for the Nuclear Liquid-Gas Phase Transition in Au + Au Collisions at 35 MeV/nucleon

Within the framework of Classical Molecular Dynamics, we study the collision Au + Au at an incident energy of 35 MeV/nucleon. It is found that the system shows a critical behaviour at peripheral impact parameters, revealed through the analysis of conditional moments of charge distributions, Campi Scatter Plot, and the occurrence of large fluctuations in the region of the Campi plot where this critical behaviour is expected. When applying the experimental filters of the MULTICS-MINIBALL apparatus, it is found that criticality signals can be hidden due to the inefficiency of the experimental apparatus. The signals are then recovered by identifying semi-peripheral and peripheral collisions looking to the velocity distribution of the largest fragment, then by selecting the most complete events.Comment: RevTex file, 21 pages + 19 figures available upon request from [email protected]

Thermal and Chemical Freeze-out in Spectator Fragmentation

Isotope temperatures from double ratios of hydrogen, helium, lithium, beryllium, and carbon isotopic yields, and excited-state temperatures from yield ratios of particle-unstable resonances in 4He, 5Li, and 8Be, were determined for spectator fragmentation, following collisions of 197Au with targets ranging from C to Au at incident energies of 600 and 1000 MeV per nucleon. A deviation of the isotopic from the excited-state temperatures is observed which coincides with the transition from residue formation to multi-fragment production, suggesting a chemical freeze-out prior to thermal freeze-out in bulk disintegrations.Comment: 14 pages, 10 figures, submitted to Phys. Rev. C, small changes as suggested by the editors and referee

A Case Report of Sandhoff Disease

Sandhoff disease is a rare and severe lysosomal storage disorder representing 7% of GM2 gangliosidoses. Bilateral thalamic involvement has been suggested as a diagnostic marker of Sandhoff disease. A case of an 18-month-old infant admitted for psychomotor regression and drug resistant myoclonic epilepsy is presented. Cerebral CT scan showed bilateral and symmetrical thalamic hyperdensity. MRI revealed that the thalamus was hyperintense on T1-weighted images and hypointense on T2-weighted images with a hypersignal T2 of the white matter. Enzymatic assays objectified a deficiency of both hexosaminidases A and B confirming the diagnosis of Sandhoff disease