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Tytuł:
Dziwidło olbrzymie (Amorphophallus titanum), niezwykła bylina sumatry
Titan arum (Amorphophallus titanum), amazing perennial plant of Sumatra
Autorzy:
Wiatrowska, Blanka
Węgiel, Andrzej
Kęsy, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1033714.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Przyrodników im. Kopernika
Tematy:
Amorphophallus titanum
endemic species
lowland equatorial evergreen rainforests
Sumatra
wiecznie zielone lasy tropikalne
gatunek endemiczny
Opis:
Amorphophallus titanum niezwykle rzadko obserwowany, endemiczny gatunek Sumatry, jest byliną wykształcająca jeden z największych kwiatostanów świata. Osiągająca ok. 3 m wysokości kolba i ujmująca ją purpurowa pochwa kwiatostanowa, skutecznie wabią zapylające roślinę chrząszcze, błonkówki oraz muchówki, które zwiedzione intensywnym zapachem padliny, ciepłem wydzielanym przez kwiatostan i jego barwą, kierują się ku znajdującym się w jego wnętrzu kwiatom. Mimo zadziwiających rozmiarów dziwidła olbrzymiego, jego biologia nie została dobrze poznana, a powierzchnia okołorównikowych lasów dwuskrzydlcowych Azji Południowo-Wschodniej, w których znajdują się jego nieliczne, naturalne stanowiska, z roku na rok kurczy się. Deszczowe lasy Indonezji i Malezji, będące jednym z głównych centrów różnorodności biologicznej na świecie, wycinane lub wypalane są bowiem pod plantacje olejowca gwinejskiego (Elaeis guineensis), które w samej Indonezji zajmują już ok. 7,7 mln ha.
Amorphophallus titanum, an extremely rare, endemic Sumatran species, is a perennial plant which forms one of the largest inflorescences in the world. Reaching up to approx. 3 m in height, the spadix is surrounded by a purple flower sheath which attracts the pollinators - beetles, hymenoptera and flies. Those, deceived by an intense scent of carrion emitted by the flowers and also by its colour, are lured to the flowers hidden inside the spadix. Despite its remarkable size, A. tutanum's biology has not been well known. The equatorial area of Dipterocarpaceae forests in SE Asia, which is the natural habitat of A. titanium, is dwindling. The Indonesian and Malay rainforests, ones of the main biodiversity hotspots in the world, are being cut and burnt down in order to establish African oil palm (Elaeis guineensis) plantations, which only in Indonesia cover an area of approx. 7,7 mln ha.
Źródło:
Kosmos; 2018, 67, 2; 257-262
0023-4249
Pojawia się w:
Kosmos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coal Dust Exposure Characteristic and Impact on Respiratory Impairment from Coal Unloading Station in Palembang, South Sumatra, Indonesia
Autorzy:
Wahyudi, Arie
Zulkifli, Hilda
Arita, Susila
Sitorus, Rico Januar
Powiązania:
https://bibliotekanauki.pl/articles/2173219.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coal dust
particulate matter
coal transportation
respiratory disorders
Opis:
Coal hauling, loading, and transportation activities impacted the emergence of coal dust which is harmful to health. The coal dust exposed from coal unloading stations and coal waterway transportation has escaped attention. This study aimed to determine the characteristics of coal dust, the influence of climate parameters on the spread of coal dust, and its impact on the health of children under five in the exposed area. The coal dust characteristics and concentrations of PM PM2.5 and PM10 were analyzed from ten points spread across three mining companies (A, B, and C). The effect of climate parameters on PM2.5 and PM10 was tested statistically. The results of the chemical analysis revealed that coal dust was dominated by the high content of Si, Al, S, and Fe. The concentration of PM2.5 and PM10 is affected by wind speed. PM2.5 and PM10 can exceed the annual threshold value, which has caused a high incidence of respiratory problems in two sub-districts, namely Makrayu and Gandus.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 113--120
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przemiany w kulturze muzycznej Sumatry Zachodniej na przykładzie wykorzystania fletu saluang darek
Changes in the musical culture of West Sumatra on the example of the use of flute saluangdarek
Autorzy:
Szymańska-Ilnata, Maria
Powiązania:
https://bibliotekanauki.pl/articles/1036112.pdf
Data publikacji:
2016-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Opis:
Saluang darek jest uznawany za jeden z najstarszych i autochtonicznych instrumentów wykorzystywanych w muzyce przez ludzi Minangkabau. Jego nazwa pochodzi od regionu Darek zwanego też Luhak Nan Tigo i stanowiącego kolebkę kultury Minangkabau. Saluang darek jest instrumentem o prostej konstrukcji – bambusowej rury otwartej na obu końcach, posiadającej cztery otwory palcowe. Taka budowa wymaga jednak stosowania specyficznej i trudnej techniki gry. Jego dźwięk jest bardzo charakterystyczny i stanowi współcześnie jeden z elementów używanych do budowania poczucia tożsamości etnicznej wśród ludzi Mianankgabau. Tradycyjnie stosowano saluang jako instrument akompaniujący do rzewnych, nostalgicznych pieśni oraz jako medium do kontaktu z duchami. W latach 70. wraz ze wzrostem popularności muzyki rozrywkowej narodził się gatunek saluang dangdut, w którym radosnym melodiom granym na flecie towarzyszą bębny i śpiew. Gatunek ten ewoluował do bardzo popularnego dziś Pop-Minang. W artykule przedstawione zostaną współczesne pola eksploatacji fletu saluang darek oraz wpływ obcych kultur i massmediów na wykonywaną na nim muzykę.
Saluangdarek is recognized as one of the oldest and indigenous instruments used in music by the Minangkabau people. Its name comes from the region Darek also called Luhak Nan Tigo and forming the heartland of Minangkabau culture. Saluangdarek is an instrument of simple construction - a bamboo tube open at both ends, having four finger holes. This construction, however, requires the use of specific and difficult playing technique. The sound of this flute is very distinctive and is today one of the elements used to build a sense of ethnic identity among the Minankgabau people. Saluang traditionally was used as an instrument accompanying the doleful, nostalgic songs as well as a medium to contact the spirits. In the 70s the new music genre called saluang dangdut was developed, where joyful melodies are played on the flute, accompanied by drums and singing. This genre has evolved into a very popular nowadays Pop Minang. The article presents the contemporary use of saluangdarekflute and the influence of foreign cultures and the mass media on the music in Minangkabau region.
Źródło:
Investigationes Linguisticae; 2016, 35; 73-84
1426-188X
1733-1757
Pojawia się w:
Investigationes Linguisticae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal Driven Mechanism of the Surface Chlorophyll-A Distribution along the Western Coast of Sumatra
Autorzy:
Sari, Qurnia Wulan
Siswanto, Eko
Utari, Putri Adia
Saputra, Okta Fajar
Lestiana, Hilda
Holidi
Subiyanto
Yuniarti
Iskandar, Iskhaq
Powiązania:
https://bibliotekanauki.pl/articles/2202258.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coastal
equatorial wind
MODIS
Sumatra
surface chlorophyll-a
Opis:
The chlorophyll-a (chl) abundances on the Fisheries Management Area of Indonesia Republic (WPP-RI 572), as fishery resources over the western coast of Sumatera (WSC) and Sunda Strait, were examined in this study. The extensive investigation on the mechanism ocean dynamics on chl variability along WSC was observed by using remotely sensed data on the surface. The spatial analysis was conducted using the Moderate Resolution Imaging Spectroradiometer (MODIS) Aqua Ocean colour data for a period of January 2003 to December 2015. On seasonal time scale, the surface chlorophyll-a (schl) concentration in the southern tip of Sumatra is higher than the schl in the northern tip of Sumatra. The obtained results showed that the schl concentration in the southern tip of Sumatra increases (decreases) during the southeast (northwest) monsoons. Interestingly, its interactions with the southeast monsoon wind result in intensified coastal upwelling along the monsoon trough in July – August. It triggered a large bloom of the schl concentration from the upwelling region of southern tip Sumatra. Moreover, the schl in the center region followed the peak of the equatorial wind during the period transition in the Indian Ocean which is controlling the dynamics ocean such as upwelling event. Meanwhile, the opposite situation of the schl concentration observed low along the western coast of Sumatra during the northwest monsoon. At the same time, strong upwelling observed at the northern tip of Sumatra was associated with intense cooling on the sea surface temperature. It triggered a large bloom of high schl water from the upwelling region of northern Sumatra Island.
Źródło:
Journal of Ecological Engineering; 2022, 23, 11; 254--260
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Actual Status Assessment and Prediction of the Musi River Water Quality, Palembang, South Sumatra, Indonesia
Autorzy:
Rahutami, Syntia
Said, Muhammad
Ibrahim, Eddy
Herpandi
Powiązania:
https://bibliotekanauki.pl/articles/2202153.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
pollution index
quality status
water pollution
sedimentation
Opis:
Water pollution in rivers is still a crucial problem for the countries that use river water as the primary water source. This study aimed to determine the water quality of the Musi river and the content of heavy metals in water, sediment and mussels as well as to predict the water quality of the Musi river in the next five years. The water samples were taken from 18 stations (sampling points) from upstream to downstream to be checked physically, chemically and biologically. Prediction of the river water quality was made using the QUAL2Kw software. The research results show that the Musi River water is categorized as lightly polluted with concentrations of TSS and DO that have passed the threshold. The heavy metals in river water, such as Pb and Cr have also passed the quality standard. The Fe, Mn, and Zn concentrations are pretty high in the sediment. In turn, in mussels, the metals measured were Fe, Cu, and Zn. The prediction results reveal that several values of the river quality parameters will pass the threshold value with the same pattern tendency from each station.
Źródło:
Journal of Ecological Engineering; 2022, 23, 10; 68--79
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental Carrying Capacity Based on Land Balance for Evaluation Planning of Spatial and Regional in Solok Regency, West Sumatra
Autorzy:
Pahuluan, A.
Soeprobowati, T. R.
Hadiyanto, H.
Powiązania:
https://bibliotekanauki.pl/articles/123991.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
spatial planning
land carrying capacity
land supply
land demand
Solok Regency
Opis:
Act No. 26 of 2007 on Spatial Planning stated that the central and the local government should establish Spatial and Regional Planning (RTRW) by considering environmental carrying capacity. The environmental carrying capacity based RTRW will ensure the balance between the use of natural resources and the prevention of negative impacts on the environment. The objective of this study was to evaluate the implementation of RTRW at Solok Regency Year 2012–2031 which has been established in 2013. Evaluation was conducted by calculating land carrying capacity method to determine land supply and land demand. The results showed that the land use planned as stated in the RTRW increase the land supply in supporting bio-product production to meet the needs of the population, with surplus conditions amounted to 101,005.79 hectares. The future predictions indicated that the carrying capacity of planned land could met the needs of the population bio-product until the year 2121. The evaluation of the spatial pattern plan showed that there was a need to increase the area of housing and settlements in accordance with the rate of population increase and determine the extents area for the development of the livestock sector to improve its yield.
Źródło:
Journal of Ecological Engineering; 2017, 18, 3; 22-30
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Cobb-Douglas Production Function to Manufacturing Industries in West Sumatra Indonesia
Autorzy:
Nurunnajib, Ahfazh Fauzy
Wulan, Elis Ratna
Awalluddin, Asep Solih
Supian, Sudradjat
Subiyanto, Subiyanto
Powiązania:
https://bibliotekanauki.pl/articles/1177721.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cobb-Douglas Production Function
Least Square Estimation
Manufacturing Industry
Newton Raphson Method
Opis:
In this paper, we discusses one of the production functions that shows the relationship between the level of output and the level of input combinations that called Cobb-Douglas production function. The estimation method used is the least square estimation with the settlement using Newton Raphson iteration. The Cobb-Douglas production function is applied to five selected manufacturing industries in West Sumatra. From the research result, the return to scale (RTS) of the rubber and plastic goods industry is 0.8424 and the return to scale of the food and beverage industry is 0.8496 in which the two industries produce RTS <1. Whereas return to scale of the publishing and printing industry is 1.0460, the return to scale of the textile industry is 1.0018, and the return to scale of the non-metallic mining industry is 1.3384. Of the three industries each produce RTS> 1.
Źródło:
World Scientific News; 2018, 101; 145-156
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of technical evaluation and customer satisfaction of clean water services (case study: PDAM Lematang Enim at Muara Enim Regency, South Sumatra, Indonesia)
Autorzy:
Ningsih, Wahyu
Fitriani, Heni
Hadinata, Febrian
Powiązania:
https://bibliotekanauki.pl/articles/36066387.pdf
Data publikacji:
2023
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
clean water service
satisfaction
PDAM
water company
Opis:
The availability of clean water is the responsibility of the local government to the community by one of the regional-owned companies known as the regional drinking water company (Perusahaan Daerah Air Minum – PDAM). The company performance will greatly affect community satisfaction. This study aims to analyze the performance of PDAM Lematang Enim and assess customer satisfaction with them. The data used in this study were collected through laboratory analysis and direct surveys of the community. The data were then analyzed using quantitative statistical methods. Customer satisfaction index (CSI) analysis and quadrant analysis are used to map customer satisfaction with the services provided. The CSI score showed that a value of 66.14 can be grouped in the satisfied category. The level of customer satisfaction with the services provided by PDAM Lematang Enim can be categorized as good. Strategies for increasing customer satisfaction are formulated through strength, weaknesses, opportunities, and threats (SWOT) analysis. The results of the analysis show that customer satisfaction is included in the satisfied category. Water quality variables include that water does not smell and tastes quite good, but customers still feel that the water they receive has a different color. Strategies that can be implemented to increase customer satisfaction include focusing on increasing the most important variables according to customers, reducing spending on less important variables, and optimizing the use of appropriate technology.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2023, 32, 3; 255-269
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coastal Water Properties and Hydrodynamic Processes in the Malacca Strait: Case Study Northeastern Coast of Sumatra, Indonesia
Autorzy:
Koropitan, Alan Frendy
Barus, Ternala Alexander
Cordova, Muhammad Reza
Powiązania:
https://bibliotekanauki.pl/articles/2028143.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
vertically well-mixed
tidal mixing
coastal pollution
flow pattern
Opis:
Dynamic processes in the coastal waters play an important role in regulating the marine pollution distribution caused by riverine inputs and are relevant for coastal management. Here, the coastal water properties were investigated from field measurements and modeling hydrodynamic processes in the northeastern coast of Sumatra. The present study found that the river discharges affect a low salinity of 28–29 psu in the surface waters along near the coastal line. The river discharge might influence by strong La Niña with high rainfall in December 2010. However, the authors suggested that the effect of tidal mixing is stronger than the freshwater discharges, resulting in vertically well-mixed coastal waters in the region. The observed tidal range of 200 cm indicates a strong tidal mixing in the waters. The tidal elevation contributes more than 70% of the total measured sea elevation. The tidal current signal in which the flow pattern simulations show no significant differences among tide and wind-tide driven currents, is also dominant (77%).
Źródło:
Journal of Ecological Engineering; 2021, 22, 11; 16-29
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 22

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