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Search Results: 1 - 10 of 1148 matches for " Fritz Akhmad Nuzir "
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Re-Finding PL.AC.E. for Walking: Assessment of Key-Elements Using Questionnaire  [PDF]
Fritz Akhmad Nuzir, Bart Dewancker
Current Urban Studies (CUS) , 2015, DOI: 10.4236/cus.2015.34023
Abstract: Many studies had already been conducted to acknowledge the contribution of walking in sustainable urban development. After conducting a literature study, authors identified the 3 (three) keyelements and introduced them as PL.AC.E. (abbreviation of Profile, Activity, and Environment), of the pedestrian. The Pedestrian Profile was defined as a combination of the following key-attributes: age; financial income; physical condition; gender; mobility choice; employment and education; social cultural capital; pedestrian type; and public transportation usage. The Pedestrian Activity was defined from the key-attributes as follow: walking-related purposes; social interaction; walking intensity; walking habits; and transport modes interaction. Then the Pedestrian Environment was defined within key-attributes of: spatial planning; walk-ability; neighborhood livability; traffic safety; pedestrian facilities (hard elements); pedestrian facilities (soft elements); and environmental quality. In this study, authors would assess those key-elements by distributing a questionnaire to a group of freshmen of the Department of Architecture in the University of Kitakyushu, Japan as a trial experiment. Total 58 responses were recorded and then analyzed using correlations type statistical analysis. It was then concluded that there are indications that those key-elements could be addressed in the planning process of a walk-able urban environment. However in order to validate the result, authors would continue to further distribute the questionnaire to various respondents within different case study areas.
Relationship between Water Content and Mineralization of Carbon and Nitrogen in Soils Varying in Physical and Chemical Characteristics
Akhmad Rizalli Saidy Mail
Jurnal Tanah Tropika , 2013,
Abstract: An understanding on relationship between water content and mineralization of carbon (C) and nitrogen (N) across soils varying in physical and chemical characteristics is required to assess the influence of soil physico-chemical properties on soil organic matter decomposition. However, such information is rarely available. Relationship between C and N mineralization of three soils varying in physico-chemical properties with different measurements of water content (water-filled pore space, gravimetric water content, volumetric water content, and water holding capacity) was studied through an incubation experiment for 8 weeks. Results of the experiment showed that C and N mineralization increased with increasing water content, reached a maximum, and then decreased with subsequent increasing water content levels. Maximum C and N mineralizations were observed at 70-80% and 50% water-filled pore space (WFPS), respectively. The ranges of WFPS for C and N mineralization were the narrowest among other measurements of water content. Therefore, it was likely that a single WFPS could be used in subsequent incubations to examine either C or N mineralization of soils with different characteristics. Result of this study suggests that the preliminary experiment on the relationship between mineralization of C and N and water content is necessary to do where mineralization is needed to be assessed in soils that have different physico-chemical characteristics.
Hubungan antara Konsentrasi Cr(VI) dan Sifat Kimia Tanah: Informasi Awal untuk Remediasi Lahan Bekas Tambang di Kalimantan Selatan
Akhmad Rizali Saidy,Badruzsaufari
Jurnal Tanah Tropika , 2009,
Abstract: High concentration of heavy metals is frequently observed as an effect of mining activity. In order to determine relationship between concentration of Cr(VI) in ex-mined land and soil chemical characteristics, 15 of soils were sampled from ex-coal and chromate mined-lands in the South Kalimantan Province. Result of the experiment revealed that soils from the ex-mined lands contained 700 - 2645 mg Cr kg-1 soil. This research also showed that 0,73-1,35% of total Cr in these soils exist in the form of hexavalent chromium (Cr(VI)) that is toxic and carcinogen. Concentration of Cr(VI) in these soils were correlated significantly with soil pH in which increasing soil pH would lead to increase in concentration of Cr(VI). In addition, increasing in soil organic carbon will be followed by decreasing concentration of Cr(VI). Relationship between concentration of Cr(VI) and soil pH and organic carbon content could be useful for preliminary information for Cr reclamation of ex-mined lands.
DEVELOPMENT OF LOCAL-ECONOMIC-DEVELOPMENT SMALL AND MEDIUM INDUSTRIES (LED-SME) IN EAST JAVA
Rachmad Hidayat,Sabarudin Akhmad
Makara Seri Teknologi , 2012, DOI: 10.7454/mst.v16i2.1519
Abstract: This paper presents the effects of Indonesian government’s developmental efforts of assistance and training performed on the growth of LED-SME business units and business performance. Both parameters of the government’s assistance and training were used to analyze the impact to the growth and performance of business unit. To achieve a comprehensive result, samples acquired in this research were about 190 entrepreneurs and managers of LED-SME from East Java. Based on the parameters above, there are five hypotheses made to prove the relationship of the assistance and training to the growth and performance of business units. The structural equation modeling (SEM) was carried out to test the hypotheses. The results have shown that the government’s developmental efforts through both assistance and training for the LED-SME were capable on increasing growth and performance of business units. On the other hand, government’s developmental efforts through only trainings were incapable of directly affecting growth of LED-SME business units and performance. To improve the business unit and performance, the government needs to implement developmental principles of LED-SME with the basis of utilizing local natural resources and also the communities ofLED-SME as main suppliers for their local markets. In addition, preservation and development of local cultural and traditional arts also need to be the government’s main concern.
Activity of Zymomonas mobilis on ethanol products made of cashew nut apple (Anacardium occidentale) with different sources of nitrogen
AKHMAD MUSTOFA,SURANTO
Nusantara Bioscience , 2009,
Abstract: Mustofa A, Suranto. 2009. Activity of Zymomonas mobilis on ethanol production made of cashew nut apple (Anacardium occidentale) with different sources of nitrogen. Nusantara Bioscience 1: 105-109. This research is aimed at identifying Zymomonas mobilis in producing ethanol through batch fermentation process (in 24, 48 and 72 hours) using cashewnut apple extract (red, green and yellow variety) and urea, ammonium sulphate, extract of green peanut sprout and extract koro (Mucuna pruriens) as sources of nitrogen. The research showed that green cashewnut extract with ammonium sulphate in 24 hours of fermentation produced ethanol in optimum result. This treatment had pH of 5.87, 7.64 g/100 mL of sugar (with 48.44% of consumption), 8.0x107 amount of bacterium (μ = 0.154) and production of ethanol equal to 33.02 g/L (Ye = 90.19%).
Aktivitas Zymomonas mobilis pada produk etanol dari buah semu jambu mete (Anacardium occidentale) dengan variasi sumber nitrogen
AKHMAD MUSTOFA,SURANTO
Bioteknologi , 2010,
Abstract: Mustofa A, Suranto. 2010. Aktivitas Zymomonas mobilis pada produk etanol daribuah semu jambu mete (Anacardium occidentale) dengan variasi sumber nitrogen. Bioteknologi 7: 1-9. Penelitian ini bertujuan mengetahui kemampuan Zymomonas mobilis dalam memproduksi etanol melalui proses fermentasi batch (selama 24, 48 dan 72 jam), menggunakan sumber karbon sari buah jambu mete (varietas merah, hijau dan kuning) dan sumber nitrogen berupa urea, ammonium sulfat, ekstrak kecambah kacang hijau dan ekstrak kacang koro (Mucuna pruriens). Hasil penelitian menunjukkan bahwa varietas buah jambu mete hijau dengan sumber nitrogen ammonium sulfat dan lama fermentasi 24 jam memberikan hasil etanol yang paling optimal. Pada perlakuan tersebut diperoleh nilai pH 5,87, kadar gula reduksi 7,64 g/100 mL (tingkat konsumsi 48,44%), jumlah bakteri 8,0x107 (μ = 0,154) dan etanol sebesar 33,02 g/L (Ye = 90,19%).
Brahman Cross Development in Village Breeding Centre of the Sarjana Membangun Desa: Pitfall and A Lesson Learned
Pambudi Yuwono,Akhmad Sodiq
Journal of Animal Production , 2010,
Abstract: This study was conducted to evaluate the cattle development regarding the pitfall to be lesson learned on cow-calf operation of Brahman Cross (BX) of farmer groups in Village Breeding Centre (VBC) in Central Java province. Data on productivity of BX were compiled from 547 Brahman cows of 43 VBC of The Sarjana Membangun Desa (SMD) program years 2008-2009 distributed in 10 regencies. Dynamic population, calf-crop, calf and dam mortality, rate of second calving, and service per conception (S/C) were recorded. Quantitative and qualitative descriptive analyses were applied in this study. Cow-calf operation of Brahman Cross in 43 VBC was unsuccessful in terms of low reproductive rate for the second pregnancy and calving as well as a high rate of calf and dam mortality. The rate of the second calving was 2.89%. Calf and dam mortality were 17.27 and 12.23% for the SMD year 2009, meanwhile 25.67 and 7.08% for the SMD year 2008, respectively. Cow-calf development of BX in 43 VBC with the goal of increasing cattle populations was not significant. Some experiences on unsuccessful cow-calf development of BX must be taken into account and become a lesson learned for policy and program formulation in terms of cattle development through cow-calf operation of BX. The real actions through synergism and collaboration among parties (stakeholders) to solve the problems in BX development should be implemented in order to increase farmers’ income, and to achieve the main goal in the acceleration of self-sufficiency in beef production. (Animal Production 12(3): 156-162 (2010) Key Words: Beef cattle development, Brahman Cross, breeding, calf-crop.
Production System of Peranakan Etawah Goat under Application of Feed Technology: Productivity and Economic Efficiency
Akhmad Sodiq,NA Setianto
Journal of Animal Production , 2009,
Abstract: Feed resources are the major constraint in increasing goat production in the village. The main constraints to goat raising are related to feeds (i) the high cost of transport of crop residues and grass to the homesteads, (ii) the low nutritive value of feeds used, particularly in the dry period. This research was design to evaluate goat productivity and economic efficiency of goat farming under application of feed technology production system in Peranakan Etawah goat farmer group of Gumelar Banyumas Central Java. All farmers were taken as respondents using census methods. On farm research with participative focused group discussion, indepth interview, and farm observation. Descriptive analysis and independent t test methods were used to analyze the data. Results of this study showed that there was a significant improvement goat productivity on production system with the application of feed technology. Body weight at weaning, survival rate till weaning, and doe productivity were increased 7%, 2% and 5%, respectively. There was no evidence of significant different of farmers income and economic efficiency before and after the applied feed technology (P>0.05). The calculation was based on cash flow. Before application, farmers income per year and economic efficiency were Rp14.404.520,00 and 1.21, then insignificantly improve into Rp16.487.100,00 and 1.27, respectively. (Animal Production 11(3): 202-208 (2009) Key Words: Livestock production system, Peranakan Etawah goat, feed technology aplication, productivity and economic efficiency
Feed Restriction Does Not Impair Insulin Sensitivity, but Exercise and Resumption of Full Feeding Increase Insulin Sensitivity and Blood Flow Across the Hind-Limb Muscles
Pambudi Yuwono,Akhmad Sodiq
Journal of Animal Production , 2008,
Abstract: Tujuan penelitian ini adalah untuk mengetahui kepekaan terhadap insulin dan pemanfaatan glukosa oleh kaki belakang domba yang mendapatkan perlakuan pembatasan pakan dan excersise serta pada domba yang diberi pakan penuh dan tidak excesise. Domba sebanyak 18 ekor berumur 8-9 bulan dikelompokan berdasarkan bobot badan dalam rancangan acak kelompok terdiri dari tiga perlakuan dengan enam ulangan. Terdapat dua periode dalam penelitian ini, pada peride I (45 hari) domba dalm perlakuan I dibatasi pemberian pakannya dan excersise selama 2,5 jam perhari, 6 hari seminggu dengan kecepatan 1,1 m per detik. Domba dalam perlakuan II hanya mengalami pembatasan pakan saja, sedangkan domba dalam perlakuan III diberi pakan ad libitum dan tidak excersise. Pada periode II (30 hari), semua domba dalam perlakuan I, II dan III diberi pakan ad libitum dan berhenti excersise. Kepekaan terhadap insulin ditandai oleh ektraksi glukosa selama hiperisulim pada kaki belakang tidak berbeda nyata (P>0.05) antar perlakuan pada akhir periode I. Ekstraksi glukosa (rataan ± salah baku) masing-masing perlakuan adalah 4,71 ± 0,9; 3,70 ± 0,72; 3.49 ± 0.54 %/kg otot. Pada minggu kedua periode II, kepekaan terhadap insulin cenderung lebih tinggi (P=0.064) dengan nilai ektraksi glukosa (rataan ± salah baku) untuk perlakuan I, II dan III masing-masing adalah 3,79 ± 0,26; 3,88 ± 0,39; 2.99 ± 0.41 %/kg otot. Pada akhir periode I, laju aliran darah yang melalui kaki belakang untuk perlakuan I dan II masing-masing lebih rendah 19 dan 24% dibandingkan dengan perlakuan III sehingga berakibat pemanfaatan glukosa lebih rendah (P<0,05). Pada periode II, laju aliran darah dan pemanfaatan glukosa tidak berbeda nyata (P>0,05) antara ketiga perlakuan. Disimpulkan bahwa pembatasan pakan tidak menurunkan kepekaan terhadap insulin. Excersise dan pemberian pakan secara ad libitum setelah sebelumnya mengalami pembatasan pakan akan meningkatkan kepekaan terhadap insulin. (Animal Production 10(2): 90-95 (2008) Kata Kunci: Domba, glukosa, ektraksi, insulin, laju aliran darah, excersise, pembatasan paka
The Rate of Blood Glucose Utilization in Thin Tailed Weaner Lambs Following a 5-week Feed Restriction
Pambudi Yuwono,Akhmad Sodiq
Journal of Animal Production , 2006,
Abstract: The purposes of the experiment were to investigate the effect of feed restriction on the rate of whole body glucose utilization and to examine relationship between basal glucose concentration in the blood and the rate of whole body glucose utilization. A total of 12 thin tailed weaner lambs (7-11.80 kg) was at random assigned to either treatments I (T1) or II (T2). T1 was restrictively fed for five weeks whereas T2 were fully fed during the experiment. At the end of a 5-week restriction period, T1 lost live weight of 11.45% whereas T2 gained weight of 11.95%. Glucose utilization rate was estimated by injecting a bolus of glucose into one jugular vein with a dose of 0.30 g per kg live weight. Blood samples (2.50 ml) were taken from the other jugular vein 5 min before injection and 10, 20, 30, 40, 50, 60 after injection of a bolus of glucose. Collected data was analyzed using unpaired “t” test with equal replicates. Statistical analysis indicated that the rate of whole body glucose utilization of T1 (mean±SE) was significantly (P<0.01) slower than that for T2 (0.88 ± 0.06 vs. 1.79 ± 0.25%/minute). Mean basal blood glucose concentration of T1 and T2 (mean±SE) were 3.16 ± 0.21 and 4.19 ± 0.04 mM, respectively. In conclusion, feed restriction for a long period of time impaired whole body glucose utilization. (Animal Production 8(1): 44-49 (2006) Key Words : Sheep, glucose, concentration, blood
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