154 research outputs found
Homogeneous and heterogeneous melting behavior of bulk and nanometer-sized Cu systems: a numerical study
No full textPenilaian Petani Terhadap Kinerja Penyuluh Pertanian (Studi Kasus di Kelurahan Bonto Manai, Kecamatan Bissamppu Kabupaten Bantaeng)
No full textThe purpose of this research; 1) to determine the performance of agricultural extension workers in Bonto Manai Village, Bissappu District, Bantaeng Regency, and 2) to determine the farmer\u27s assessment of the performance of agricultural extension workers in Bonto Manai Village, Bissappu District, Bantaeng Regency. This research took place in October-December 2017. The population of this study were all farmers in Bonto Manai Village, Bissappu District as many as 185 people. The sample of this study was taken by 10% of the existing population as many as 20 rice farmers. The performance of agricultural extension workers in Bonto Manai Village, Bissappu District, Bantaeng Regency, namely, a) The main activities of agricultural extension, b) Creating agricultural extension programs, c) Selecting and applying agricultural extension methods, d) Carrying out self-help and farmer-initiated development, f) Developing areas, and g) Develop cooperative relations with agricultural extension workers.
Based on the analysis of farmers\u27 assessment of the performance of agricultural extension workers in Bonto Manai Village, Bissappu District, Bantaeng Regency, the analysis results show that; a) The main activities of agricultural extension, stating Satisfied 55%, Quite Satisfied 30%, Dissatisfied 15%, b) Providing agricultural extension planning data, stating Satisfied 65%, Sufficiently Satisfied 25%, Dissatisfied 10%, c) Making agricultural extension program, stating Satisfied 50%, Sufficiently Satisfied 40%, Dissatisfied 10%, d) Preparation of agricultural extension materials, stating Satisfied 65%, Sufficiently Satisfied 35%, Dissatisfied 0%, e) Application of extension methods, which stating Satisfied 75%, Sufficiently Satisfied 20%, Not Satisfied 5%, f) Carrying out self-help and self-help development of farmers, stating Satisfied 80%, Sufficiently Satisfied 5%, Dissatisfied 3 15%, g) Regional development, stating Satisfied 70 %, Sufficiently Satisfied 20%, Not Satisfied 10%, and h) Cooperation relationship with agricultural extension workers, which states that they are 95% Satisfied, 5% Satisfied, and 0% Dissatisfied
Mechanically induced self-propagating combustions: experimental findings and numerical simulation results
No full textMechanically-induced combustion reactions were carried out in a transparent quartz vial. The combustion processes were followed by high-speed video recording and optical pyrometers. Depending on the vial dynamics, the powder particles were seen to gather in a periodic collective motion, behaving like a granular gas characterised by subsequent changes in its density. After ignition, a considerable increase of brightness was observed, due to the extremely rapid propagation of the high-temperature reaction to the whole mass of powder. Experimental observations find a very good correlation if compared to the results of numerical calculations simulating the particle system dynamics. Balls and powder dynamics were reproduced according to a well-known visco-elastic force scheme, while chemical conversion of each powder particle was described by a conventional nucleation-and-growth kinetics. The propagation mechanism of the reaction was studied and related to the dynamic features of the whole system
PERAN KOMUNITAS SOKOLA KAKI LANGIT DALAM MEMBINA ANAK USIA SEKOLAH DI BONTO MANAI KABUPATEN MAROS
No full textPenelitian ini bertujuan untuk mengetahui: (1) Peran komunitas Sokola Kaki langit dalam membina anak usia sekolah di Bonto Manai Kabupaten Maros.
(2) Faktor yang mempengaruhi komunitas Sokola Kaki Langit dalam membina anak usia sekolah di Bonto Manai. Jenis penelitian ini merupakan jenis penelitian kualitatif. Jumlah informan pada penelitian ini sebanyak 13 orang yang ditentukan melalui teknik purposive sampling dengan kriteria (1) Pengurus harian Sokola Kaki Langit, (2) Menjadi anggota komunitas selama 1 tahun, (3) Aktif dalam
mengikuti kegiatan komunitas. Teknik pengumpulan data yang dilakukan yaitu
observasi, wawancara, dan dokumentasi. Teknik analisis data kualitatif melalui tiga tahap yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Teknik pengabsahan data menggunakan teknik triangulasi sumber.
Hasil penelitian ini menunjukkan bahwa (1) Peran komunitas Sokola Kaki Langit dalam membina anak usia sekolah di Bonto Manai Kabupaten Maros yaitu:
(a) Mengadakan kelas nonformal. (b) Membantu pihak sekolah pada pembelajaran formal. (c) Membuat atau meningkatkan rumah baca/perpustakaan. (d)
Memberikan dorongan dan pemahaman pentingnya pendidikan. (e) Bekerjasama
dengan pihak keluarga murid binaan. (f) Bekerjasama dengan pihak sekolah. (g) Bekerjasama dengan masyarakat. (2) Faktor yang mempengaruhi komunitas Sokola Kaki Langit dalam membina anak usia sekolah di Bonto Manai Kabupaten Maros yaitu: (a) faktor pendorong meliputi jenis kegiatan pembinaan yang menarik, dan hubungan antara pendidik dan peserta didik yang baik. (b) faktor penghambat yang terdiri dari faktor internal meliputi adanya anggota yang kurang bekerja secara kolektif, adanya anggota yang kurang menindaklanjuti hasil evaluasi, adanya anggota yang kurang disiplin waktu saat berkegiatan, serta faktor eksternal meliputi kendala dari segi akses di lokasi binaan, kondisi murid yang kurang mendukung dalam mengikuti pembinaan, serta kegiatan akademik maupun
nonakademik dari relawan
Orthodontic treatment need and timing: Assessment of evolutive malocclusion conditions and associated risk factors
No full textAim Orthodontic treatment need indexes are indispensable tools for collecting aepidemiological information, to define the need for clinical intervention on a graduated risk scale and to monitor the evolution of clinical conditions over time. The purpose of this research is to evaluate the prevalence of malocclusion and associated risk factors, and to compare the prevalence of malocclusion related to children’s growth. Investigating the correlation between malocclusion and dental occlusion development is crucial to define orthodontic timing and the most suitable treatment modalities. Materials and methods A cross-sectional, multi-center, observational study was carried out throughout Italy: 4,422 patients aged between 2 and 13 years were visited. The patients were divided into two age groups: one composed of patients aged 2 -7 years, and one of children between 8 and 13 years of age. The prevalence data were classified according to the items of the Baby ROMA (first group, deciduous/early mixed dentition) and ROMA Index (second group, late mixed/permanent dentition). Pearson’s Chi-square test was applied for the calculation of statistical significance in the comparison of prevalence data between the two age groups (P <0.05). Results The need for orthodontic treatment among Italian children is high. In the sample aged between 2 and 7 years, the most frequent malocclusions are the moderate and severe open bite (23%), moderate and severe Class II (21.2%), deep bite (18.8%), cross bite (16.5%), Class III (7.7%), and crowding (5.1%). In the sample aged between 8 and 13 years the most frequent malocclusions are crowding (50.8 %), Class II (33.1%), deep bite (19.2%) crossbite (18.1%), Class III (9.1%), open bite (6.6%), facial or mandibular asymmetries (3.3%), and functional asymmetries (3.2%). It was found a statistically significant variation of the different malocclusion conditions according to age. Conclusions The study confirms that some risk factors occur during growth, and worsen the malocclusion. Therefore, it is important to reduce this risk of worsening by counteracting those factors with an early orthodontic intervention. Some malocclusions are less affected by environmental risk factors. In these case it would be better defer treatment until adolescence.
Abstrac
Cataract in professionals exposed to solar radiation: a cross sectional study
No full textPurpose: To find out frequency of cataract in seaside workers and possible factors associated to its development.
Study Design: Cross sectional observational.
Place and Duration of Study: Tyrrhenian coast of Tuscany (Italy), between Rosignano Marittimo and Cecina municipalities in July 2021.
Methods: Ninety-eight seaside workers were selected through convenience sampling technique. All the working subjects selected for this study had a bilateral natural vision equal to or greater than 6/10 in the anamnestic data collection, declared they had not eye diseases in the past and rarely used protective glasses during their work.
Results: The mean age of 98 outdoor workers is 40. Patients with the cataract are older than people without cataract (median 41 vs 38) (p < 0.001) and have a lower visual acuity (0.6 vs 0.7) (p < 0.001); stratifying by job, refraction state and Intra Ocular Pressure (IOP), there aren’t significant association with cataract. The multivariate analysis confirms that age and visual acuity are associated with the development of the cataract (OR 1.99 and 0.01, respectively).
Conclusion: Although senile cataract is an age related disease but Visually significant cataract is seen in persons working outdoors for longer hours
Room-temperature self-assembly of equilateral triangular clusters via Friedel oscillations
No full textWe report on the formation of equilateral triangular clusters hollow inside with 5–6 atoms per side, selfassembled
on Ni adislands grown on Rh(111). The observation of standing wave patterns on the Ni
adislands and the Rh(111) indicates that the self-assembly is mediated by Friedel oscillations. In this
context, we propose a model based on the energy of interaction between adsorbates, which explains the
formation of the clusters as a result of the assembly of rows of 5–6 adatoms
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