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Search Results: 1 - 10 of 196 matches for " Jehan Ramdani Haryati "
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Ethno-Edible Mushroom of Pleurotus sp., Clytocybe nebularis and Auricularia auricula in Ranupani Village, East Java
Jehan Ramdani Haryati,Rodiyati Azrianingsih
Journal of Tropical Life Science , 2012,
Abstract: This paper documented the knowledge about the wild edible fungal flora of Ranupani Village of East Java Indonesia that used by indigenous Tenggerese tribes. Study was conducted by using semi-structured interview and purposive sampling. Data were analyzed quantitatively descriptive. Index of Cultural Significance (ICS) was used to evaluate the importance of non-wood forest’s yields for local people. Identification of edible mushrooms was based on Guidelines of Flora Diversity Data Collection. This study was focus on the three edible mushrooms which are eaten mostly by the villagers, i.e. Pleurotus sp., Clytocybe nebularis and Auricularia auricula. The result is the Ranupani residents’ perception of edible mushrooms and its potential as an alternative source of food based on local knowledge and local wisdom of Tenggerese. Pleurotus sp. has the highest preference and intensity to be consumed with 3,2 ICS. It means culturally, this edible mushroom were not too important but intensively used as a secondary food sources such as soup (added or sauted), chips (dried) and fried. Ranupani Villagers always consumed edible mushrooms in rainy season. The ability of residents to distinguish edible mushrooms are equal to the searching ability to find edible mushroom substrate. The residents will recognized the substrate of edible mushrooms on dead trunks of Pasang Tree (Lithocarpus sundaicus), Danglu (Engelhardia spicata), Kemlandingan (Albizia Montana), Casuarina (Casuarina junghuhniana) and acacia (Acacia decurens). Residents who do not have the ability to distinguish and searching were consumer, get the edible mushrooms by buying from the searcher or distributor in packs. The characteristics of an edible mushrooms are a discrete soft flesh of the fruit body, dark color, no ring on the stipe, the presence of insects (e.g. moths) in the lamellae) and the type of mushroom substrate. There were also assisted growths of wild mushrooms by the residents’ raw chop the dead tree trunk as a substrate deliberately. Respondents who knew the time of harvesting edible mushroom were 58.3%. Pasang mushrooms (natural & assisted growth) can be found throughout the rainy season, with an interval of 12 days for subsequent retrieval. While Barat and Kuping mushrooms are found throughout the rainy season, but randomly distributed in the forest. There were unwritten but spoken hereditary local wisdom for the sustainable of the edible mushrooms in Tengger. Only Tenggerese allowed collecting and selling the edible mushrooms in Tengger area to the Tenggerese themselves and tourist (local or
Vegetation Diversity Quality in Mountainous Forest of Ranu Regulo Lake Area, Bromo Tengger Semeru National Park, East Java
Jehan Ramdani Hariyati,Luchman Hakim
Journal of Tropical Life Science , 2012,
Abstract: Aim of this research was to study vegetation diversity quality in mountainous forest of Ranu Regulo Lake area in Bromo Tengger Semeru National Park (TNBTS), East Java. Field observation was carried out by vegetation analysis using sampling plots of 25x25 m2 for trees, 5x5 m2 for poles, 1x1 m2 for ground surface plants. Community structure of each lake side was determined by calculating vegetation's density, basal area, frequency, important value and stratification of species. While vegetations diversity was estimated by taxa richness, Shannon-Wiener diversity index, and rate of endemism. Each lake side forests were compared by Morisita community similarity index. Data were tabulated by Microsoft Excel 2007. The result showed that based on existed vegetation, mountainous forest surrounding Ranu Regulo Lake consisted of four ecosystems, i.e. heterogenic mountainous forest, pine forest, acacia forest and bushes. Bushes Area has two types of population, edelweiss and Eupatorium odoratum invaded area. Vegetation diversity quality in heterogenic mountainous forest of Ranu Regulo TNBTS was the highest, indicated by its multi-stratification to B stratum trees of 20-30m high. Heterogenic mountainous forest’s formation was Acer laurinum and Acmena accuminatissima for trees, Chyatea for poles. Taxa richness was found 59 species and 30 families, while the others were found below 28 species and 17 families. Diversity Index of heterogenic mountainous forest is the highest among others for trees is 2.31 and 3.24 for poles and second in bushes (H=3.10) after edelweiss ecosystem (H=3.39). Highest rate of endemism reached 100% for trees in heterogenic mountainous forest, 87% for poles in edelweiss area and 89% for bushes also in heterogenic mountainous forest. Trees, poles and herbs most similarity community showed by pine and acacia forest. Based on those five characters, vegetation diversity quality in Ranu Regulo Lake area was medium for heterogenic mountainous forest and edelweiss area comparing to pine and acacia forest which had very low diversity quality. This low diversity was caused by invading species E. odoratum in density, distribution and dominance for threatening growth of poles and ground surface plants local species. Invaded ecosystem were pine forest, acacia forest and edelweiss area. It hasn’t major invading in heterogenic mountainous forest, but it has reached the edge. Therefore, environmental policy must focus on this matter soon.
Eusideroxylon zwageri (Ulin) as Key Species in Two Zones of Sangkima Rain Forest, Kutai National Park, East Kalimantan
Jehan R. Haryati,Intan N. Azizah,E. Arisoesilaningsih
Journal of Tropical Life Science , 2010,
Abstract: Aim of this research was to study trees’ diversity quality in primary and intensively used forest of Sangkima area in Kutai National Park (TNK), East Kalimantan (Borneo). Field observation was carried out by vegetation analysis using 17 sampling plots of 25x25 m2. Community structure of each forest was determined by calculating trees' density, basal area, frequency, important value and stratification of species. While trees diversity was estimated by taxa richness, Shannon-Wiener diversity index, and rate of endemism. Both forests were compared by Morisita community similarity index. Data were tabulated by Microsoft Excel 2007 and statistically analyzed by PCA method and supported by hierarchical cluster analysis in SPSS 15.00 for windows. The result showed that diversity quality in primary and intensively used forest of Sangkima TNK was high, indicated by similar stratification. The forests were composed by A stratum trees of > 30 m high to ground co ver plants, but they were domi nated by B stratum trees of 20-30m high. Primary forest’s formation was Eusideroxylon zwageri-Mixed Dipterocarpaceae, while intensively used forest’s formation was E. zwageri. Taxa richness of both forests was not different significantly. In the primary forest was found 34 species, 25 families and 16 orders, while intensively used forest was found 36 species, 20 families and 13 orders. Diversity Index of primary forest (H=4.57) was slightly higher than secondary forest (H=4.28). Rate of endemism of both forests reached 100%. Eusideroxylon zwageri and Cananga odorata were co-dominant in the Borneo rain forest. Tree of E. zwageri showed a bigges t trunk and largest canopy. Cananga odorata showed a high density in both zones. Luxurious jungle performed A to E strata, but B stratum was dominant. Based on those five characters, trees’ diversity quality in Sangkima was still high. Bi plot analysis showed that trees’ community structure of both forests composed by three groups. In secondary fo rest, E. zwageri was a key sp ecies and characterized by high important value, while species C. odorata, Dyospiros borneensis and Dillenia beccariana found in a high distribution, otherwise other trees were classified into the 3rd group. Comparing to the secondary forest, even though E. zwageri was also as dominant tree, but the virg in one showed more species growing in a better density, distribution and dominance.
Urban Vegetation Mapping from Fused Hyperspectral Image and LiDAR Data with Application to Monitor Urban Tree Heights  [PDF]
Fatwa Ramdani
Journal of Geographic Information System (JGIS) , 2013, DOI: 10.4236/jgis.2013.54038
Abstract:

Urban vegetations have infinite proven benefits for urban inhabitants including providing shade, improving air quality, and enhancing the look and feel of communities. But creating a complete inventory is a time consuming and resource intensive process. The extraction of urban vegetation is a challenging task, especially to monitor the urban tree heights. In this study we present an efficient extraction method for mapping and monitoring urban tree heights using fused hyperspectral image and LiDAR data. Endmember distribution mapping using the spectral angle mapper technique is employed in this study. High convenience results achieved using fused hyperspectral and LiDAR data from this semiautomatics technique. This method could enable urban community organizations or local governments to map and monitor urbans tree height and its spatial distribution.

Extraction of Urban Vegetation in Highly Dense Urban Environment with Application to Measure Inhabitants’ Satisfaction of Urban Green Space  [PDF]
Fatwa Ramdani
Journal of Geographic Information System (JGIS) , 2013, DOI: 10.4236/jgis.2013.52012
Abstract:

Urban environment has functioned not only for ecological reason but also for socioeconomic function, due to this reason extraction of urban vegetation in highly dense urban environment becomes more important to understand the inhabitants satisfaction of urban green space. With a medium resolution of satellite imagery, the precision is very low. We used high resolution of WorldView-2 satellite to raise the accuracy. We chose Depok City in West Java as a case study area, analyse four multispectral bands, and apply TCT algorithm for getting vegetation density. The relationship between vegetation density and inhabitants satisfaction was calculated by Geo-statistical technique based on administrative boundary. We extracted three types of urban vegetation density: good, mid and low. The final result shows that the inhabitants are mostly satisfied with good density of urban vegetation in the city forest inside Campus University of Indonesia.

Quality of Soil and Yield of Food Crops in Ultisols Due to Application of Manure and Source of Phosphate Fertilizer
Yoyo Soelaeman,Umi Haryati
Jurnal Tanah Tropika , 2012,
Abstract: Acid upland soil in Indonesia has a potential for agricultural development but it has constraints low of organic Cand available P as well as the soil physical properties have been degraded. The use of manure and direct applicationphosphate rock (PR) was an alternative to improve land productivity and crop yields. The objective of the study wasto examine the effects of manure and the sources of P on soil physical and chemical properties and yield of foodscrop that was arranged on intensive cropping systems of upland rice + maize -/- cassava- mungbean. The experimentwas carried out at Tamanbogo Station Farm, East Lampung since 2007 until 2009 using randomized completely blockdesign with 3 replications. The treatments were (1) 10 Mg ha-1 manures + 1 Mg ha-1 of RP, (2) without manure + 1 Mgha-1 of PR, (3) 10 Mg ha-1 manures + 100 kg ha-1 SP 36, and (4) without manure + 100 kg ha-1 SP 36. The results showedthat the application of manure along with PR improved soil chemical and physical characteristics. Its improvementaffected the yield of foods crops, hence the profit increased with B/C ratio between 2.88-3.60.
SOIL PHYSICAL PROPERTIES AND PRODUCTION OF UPLAND ULTISOL SOIL AS INFLUENCED BY MANURE APPLICATION AND P FERTILIZATION
Yoyo Soelaeman,Umi Haryati
Agrivita : Journal of Agricultural Science , 2012,
Abstract: Acid upland soil in Indonesia has a great potential for agricultural development but the soil physical properties have been degraded. The use of manure and direct application of Gresik phosphate rock (PR) was an alternative to improve land productivity and crop yields. The objective of the study was to evaluate the effects of manure and P sources on soil physical properties and yield of food crops, which was arranged on intensive cropping systems of upland rice + maize -/- cassava- mungbean. The experiment was carried out in Tamanbogo Research Farm, East Lampung from 2007 to 2009 using randomized complete block design with 3 replications. The treatments were (1). 10 t ha-1 manures+1 ton per ha of PR, (2). Without manure + 1 ton per ha of PR, (3). 10 ton per ha manures+100 kg per ha of SP 36, and (4). Without manure+100 kg per ha of SP 36. The results showed that the application of manure along with PR improved soil physical characteristics of ultisol soil and gave the highest yield of food crops with B/C in year 3th was 3.60.
Scaling for better service performance: effects of respect and rapport on relationship quality in Malaysia
Siti Haryati Shaikh Ali
Interdisciplinary Journal of Research in Business , 2011,
Abstract: In today’s competitive era, service businesses seek the most creative but effective means of attracting and retaining customers. In doing so, efforts are be concentrated on creating quality relationship via interpersonalrelationship with customers. This research is suggesting two ways of building good interpersonal relationshipwith customers, which are rapport and respect. This preliminary study draws on empirical result from clients of dental clinics in Malaysia. The result from Pearson Correlation and Multiple Regression analysis support the need for both constructs in building quality relationship with customers. The authors conclude with a discussion on the results and implications.
Serum Estrogen Concentration in Relation to Estrous Duration of Thin-tail Ewes with Inducted of PMSG
Sugiyatno,MS Sumaryadi,Haryati
Journal of Animal Production , 2001,
Abstract: Fifteen thin tail ewes were used in to study of contribution of maternal serum estrogen concentration this in relation to estrous duration with inducted of PMSG. The first step, all experiment ewes were injected prostaglandin (7.5 mg luprositol per head) i.m. as much twice of interval day 11 to homogeneity follicle growth phase. In the estrous observed was estrous (700 IU duration, then blood sampling taken out of vena jugulars to analyses of estrogen. The second step, all experiment ewes were inducted PMSG (700 IU per head), then in the estrous observed was same as the first step. The result of experiment show that induction of PMSG influence to maternal serum estrogen concentration has different significantly (P<0.01)and estrous duration has different significant (P<0.05).Maternal serum estrogen concentration prior and post of induction of PMSG contributed 25.28 and 57.12 percent, respectively. It was concluded that the estrous duration in relation to increased maternal serum estrogen concentration. (Animal Production 3(1): 40-44 (2001) Key Words: Estrogen, estrous, ewes
Extensions to the Finite Element Technique for the Magneto-Thermal Analysis of Aged Oil Cooled-Insulated Power Transformers  [PDF]
Jehan Shazly, Amr A. Adly
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2012, DOI: 10.4236/jemaa.2012.44022
Abstract: It is well known that the hot spot temperature represents the most critical parameter identifying the power rating of a transformer. This paper investigates the effect of the degradation of core magnetic properties on temperature variation of aged oil-cooled transformers. Within this work, 2D accurate assessment of time average flux density distribution in an oil insulated-cooled 25 MVA transformer has been computed using finite-element analysis taking into account ageing and stress-induced non-uniform core permeability values. Knowing the core material specific loss and winding details, local core and winding losses are converted into heat. Based upon the ambient temperature outside the transformer tank and thermal heat transfer related factors, the detailed thermal modeling and analysis have then been carried out to determine temperature distribution everywhere. Analytical details and simulation results demonstrating effects of core magnetic properties degradation on hot spot temperatures of the transformer’s components are given in the paper.
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