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Simulated Indonesian Throughflow in Makassar Strait across the SODA3 products
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作者 Tengfei Xu Zexun Wei +6 位作者 Haifeng Zhao Sheng Guan Shujiang Li Guanlin Wang Fei Teng Yongchui Zhang Jing Wang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2024年第1期80-98,共19页
The Indonesian Throughflow(ITF), which connects the tropical Pacific and Indian oceans, plays important roles in the inter-ocean water exchange and regional or even global climate variability. The Makassar Strait is t... The Indonesian Throughflow(ITF), which connects the tropical Pacific and Indian oceans, plays important roles in the inter-ocean water exchange and regional or even global climate variability. The Makassar Strait is the main inflow passage of the ITF, carrying about 77% of the total ITF volume transport. In this study, we analyze the simulated ITF in the Makassar Strait in the Simple Ocean Data Assimilation version 3(SODA3) datasets. A total of nine ensemble members of the SODA3 datasets, of which are driven by different surface forcings and bulk formulas, and with or without data assimilation, are used in this study. The annual mean water transports(i.e.,volume, heat and freshwater) are related to the combination of surface forcing and bulk formula, as well as whether data assimilation is employed. The phases of the seasonal and interannual variability in water transports cross the Makassar Strait, are basically consistent with each other among the SODA3 ensemble members. The interannual variability in Makassar Strait volume and heat transports are significantly correlated with El Ni?oSouthern Oscillation(ENSO) at time lags of-6 to 7 months. There is no statistically significant correlation between the freshwater transport and the ENSO. The Makassar Strait water transports are not significantly correlated with the Indian Ocean Dipole(IOD), which may attribute to model deficiency in simulating the propagation of semiannual Kelvin waves from the Indian Ocean to the Makassar Strait. 展开更多
关键词 indonesian Throughflow Simple Ocean Data Assimilation(SODA) El Ni?o-Southern Oscillation(ENSO) Indian Ocean Dipole(IOD) data assimilation
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Subthermocline eddies carrying the Indonesian Throughflow water observed in the southeastern tropical Indian Ocean
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作者 Guangbing Yang Quanan Zheng Xuejun Xiong 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2023年第5期1-13,共13页
We observed a subthermocline eddy(STE)with a cold and fresh core during an observation cruise along a transect of 10°S in the southeastern tropical Indian Ocean(SETIO)in December 2017.The vertical scale,speed rad... We observed a subthermocline eddy(STE)with a cold and fresh core during an observation cruise along a transect of 10°S in the southeastern tropical Indian Ocean(SETIO)in December 2017.The vertical scale,speed radius,and maximum swirl velocity of the STE were about 200 m,55 km,and 0.5 m/s,respectively.The mean Rossby number and Burger number of the STE were then estimated to be about−0.7 and 2.4,indicating the STE was a submesoscale coherent vortex.The STE core water had characteristics of the Indonesian Throughflow(ITF)water and was distinct from that of surrounding areas.By examining Argo float data,another STE was well captured by five successive profiles of the same Argo float.Both STEs showed significant temperature and salinity anomalies at theσ0=26.0-26.5 kg/m3 surfaces.With the assumption that the low-salinity ITF water parcels could be carried only by surface eddies and the STEs,the Argo profiles,which detected low-salinity ITF water and were located outside a surface eddy,were believed to be inside an STE and were used to analyze the distribution,origin,and generation mechanism of the STE.The results suggested that the STEs carrying ITF water may be generated under topography-current interaction at the eastern coastal waters or under front-induced subduction in the area away from coastal waters.Those STEs may be widely distributed in the SETIO and may play a role in ITF water parcel transport. 展开更多
关键词 subthermocline eddy southeastern tropical Indian Ocean indonesian Throughflow submesoscale coherent vortex
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Climatology and Variability of the Indonesian Throughflow in an Eddy-permitting Oceanic GCM 被引量:11
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作者 刘海龙 李薇 张学洪 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2005年第4期496-508,共13页
A quasi-global eddy permitting oceanic GCM, LICOM1.0, is run with the forcing of ERA40 daily wind stress from 1958 to 2001. The modelled Indonesian Throughflow (ITF) is reasonable in the aspects of both its water sour... A quasi-global eddy permitting oceanic GCM, LICOM1.0, is run with the forcing of ERA40 daily wind stress from 1958 to 2001. The modelled Indonesian Throughflow (ITF) is reasonable in the aspects of both its water source and major pathways. Compared with the observation, the simulated annual mean and seasonal cycle of the ITF transport are fairly realistic. The interannual variation of the tropical Pacific Ocean plays a more important role in the interannual variability of the ITF transport. The relationship between the ITF and the Indian Ocean Dipole (IOD) also reflects the influence of ENSO. However, the relationship between the ITF transport and the interannual anomalies in the Pacific and Indian Oceans vary with time. During some years, (e.g., 1994), the effect of a strong IOD on the ITF transport is more than that from ENSO. 展开更多
关键词 indonesian throughflow eddy-permitting oceanic GCM the interannual variability
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Gut microbiota profile in healthy Indonesians 被引量:6
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作者 Endang Sutriswati Rahayu Tyas Utami +10 位作者 Mariyatun Mariyatun Pratama Nur Hasan Rafli Zulfa Kamil Ryan Haryo Setyawan Fathyah Hanum Pamungkaningtyas IskANDar Azmy Harahap Devin Varian Wiryohanjoyo Putrika Citta Pramesi Muhammad Nur Cahyanto I Nengah Sujaya Mohammad Juffrie 《World Journal of Gastroenterology》 SCIE CAS 2019年第12期1478-1491,共14页
BACKGROUND Recently, gut microbiota has been associated with various diseases other than intestinal disease. Thus, there has been rapid growth in the study of gut microbiota. Considering the numerous factors influenci... BACKGROUND Recently, gut microbiota has been associated with various diseases other than intestinal disease. Thus, there has been rapid growth in the study of gut microbiota. Considering the numerous factors influencing gut microbiota such as age, diet, etc., area-based research is required. Indonesia has numerous different tribes and each of these tribes have different lifestyles. Hence, it is expected that each tribe has a specific gut microbiota. A deeper insight into the composition of gut microbiota can be used to determine the condition of gut microbiota in Indonesians and to consider which treatment may be suitable and effective to improve health status.AIM To investigate the gut microbiota of Indonesian subjects represented by Javanese and Balinese tribes by analyzing fecal samples.METHODS Fecal samples were collected from a total of 80 individuals with 20 in each of the young groups ranging from 25-45 years and the elderly group aged 70 years or more from two different regions, Yogyakarta and Bali. Fecal sample collection was performed at the end of the assessment period(day 14 ± 1 d) during which time the subjects were not allowed to consume probiotic or antibiotic products.The quantification of various Clostridium subgroups, Lactobacillus subgroups,Enterococcus, Streptococcus, Staphylococcus, Bacteroides fragilis group and Prevotella,Bifidobacterium and Atopobium cluster, Enterobacteriaceae and Pseudomonas was performed using the Yakult intestinal flora-scan(YIF-SCAN).RESULTS The bacterial population in younger subjects' feces was higher than that in the elderly population, with a total of approximately 10.0 – 10.6 log10 bacterial cells/g feces. The most abundant bacteria in all groups were Clostridium, followed by Prevotella, Atopobium, Bifidobacterium and Bacteroides. In the elderly, an increase in Enterobacteriaceae, Coliform and Escherichia coli was found. In terms of bacterial counts in Yogyakarta, total bacteria, Clostridium coccoides(C. coccoides) group,Bifidobacterium, Prevotella, Lactobacillus plantarum subgroup, and Streptococcus were significantly higher(P < 0.05) in younger than elderly subjects, while the Lactobacillus gasseri subgroup, Lactobacillus casei subgroup, and Lactobacillus reuteri subgroup counts were significantly lower(P < 0.05) in younger subjects. In Balinese subjects, total bacteria, C. coccoides group, Clostridium leptum subgroup,Bacteroides fragilis group, and Prevotella were significantly higher(P < 0.05) in younger compared to elderly individuals, while the Lactobacillus ruminis subgroup, and Enterobacteriaceae were significantly lower(P < 0.05) in younger subjects. The results also revealed that, besides the C. coccoides group and Clostridium leptum group being the most abundant gut microbiota in both Yogyakarta and Balinese people, the latter was indicated by a higher Clostridium perfringens count, which was almost 10 times that of Yogyakarta subjects. This may be a response to different lifestyles in the different tribes; however, this phenomenon requires further extensive study.CONCLUSION Bacterial populations were higher in younger than in elderly subjects. Most abundant bacterial groups were Clostridium, Prevotella, Atopobium, Bifidobacterium,and Bacteroides. The level of Clostridium perfringens in Yogyakarta subjects was lower than that in Balinese subjects. 展开更多
关键词 GUT MICROBIOTA indonesian ELDERLY YOUNG people Enterotype
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Covariation of the Indonesian Throughflow and South China Sea Throughflow Associated with the 1976/77 Regime Shift 被引量:8
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作者 刘钦燕 王东晓 +2 位作者 周文 谢强 张燕 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2010年第1期87-94,共8页
Changes in the Indonesian Throughflow (ITF) and the South China Sea throughflow-measured by the Luzon Strait Transport (LST)-associated with the 1976/77 regime shift are analyzed using the Island Rule theory and t... Changes in the Indonesian Throughflow (ITF) and the South China Sea throughflow-measured by the Luzon Strait Transport (LST)-associated with the 1976/77 regime shift are analyzed using the Island Rule theory and the Simple Ocean Data Assimilation dataset. Results show that LST increased but ITF transport decreased after 1975. Such changes were induced by variations in wind stress associated with the regime shift. The strengthening of the easterly wind anomaly east of the Luzon Strait played an important role in the increase of LST after 1975, while the westerly wind anomaly in the equatorial Pacific contributed significantly to the decrease in ITF transport after 1975; accounting for 53% of the change. After 1975, the Kuroshio Current strengthened and the Mindanao Current weakened in response to a decrease in the total transport of the North Equatorial Current. Both the North Equatorial Countercurrent and the South Equatorial Current weakened after 1975, and an anomalous cyclonic circulation in the western equatorial Pacific prevented the tropical Pacific water from entering the Indian Ocean directly. 展开更多
关键词 indonesian throughflow Luzon Strait Transport regime shift wind anomaly
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Influence of Positive and Negative Indian Ocean Dipoles on ENSO via the Indonesian Throughflow: Results from Sensitivity Experiments 被引量:6
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作者 ZHOU Qian DUAN Wansuo +1 位作者 MU Mu FENG Rong 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2015年第6期783-793,共11页
The role of the Indonesian Throughflow (ITF) in the influence of the Indian Ocean Dipole (IOD) on ENSO is investigated using version 2 of the Parallel Ocean Program (POP2) ocean general circulation model. We dem... The role of the Indonesian Throughflow (ITF) in the influence of the Indian Ocean Dipole (IOD) on ENSO is investigated using version 2 of the Parallel Ocean Program (POP2) ocean general circulation model. We demonstrate the results through sensitivity experiments on both positive and negative IOD events from observations and coupled general circulation model simulations. By shutting down the atmospheric bridge while maintaining the tropical oceanic channel, the IOD forcing is shown to influence the ENSO event in the following year, and the role of the ITF is emphasized. During positive IOD events, negative sea surface height anomalies (SSHAs) occur in the eastern Indian Ocean, indicating the existence of upwelling. These upwelling anomalies pass through the Indonesian seas and enter the western tropical Pacific, resulting in cold anomalies there. These cold temperature anomalies further propagate to the eastern equatorial Pacific, and ultimately induce a La Nifia- like mode in the following year. In contrast, during negative IOD events, positive SSHAs are established in the eastern Indian Ocean, leading to downwelling anomalies that can also propagate into the subsurface of the western Pacific Ocean and travel further eastward. These downwelling anomalies induce negative ITF transport anomalies, and an E1 Nifio-like mode in the tropical eastern Pacific Ocean that persists into the following year. The effects of negative and positive IOD events on ENSO via the ITF are symmetric. Finally, we also estimate the contribution of IOD forcing in explaining the Pacific variability associated with ENSO via ITE 展开更多
关键词 IOD Pacific Ocean ENSO indonesian Throughflow
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Origins and pathways of the subsurface and intermediate water masses of the Indonesian Throughflow derived from historical and Argo data 被引量:4
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作者 ZHANG Yanhui YU Xiaolin WANG Fan 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2008年第4期17-25,共9页
On the basis of Argo data and historic temperature/salinity data from the World Ocean Database 2001 ( WOD01 ), origins and spreading pathways of the subsurface and intermediate water masses in the Indonesian Through... On the basis of Argo data and historic temperature/salinity data from the World Ocean Database 2001 ( WOD01 ), origins and spreading pathways of the subsurface and intermediate water masses in the Indonesian Throughflow (ITF) region were discussed by analyzing distributions of salinity on representative isopyenal layers. Results were shown that, subsurface water mostly comes from the North Pacific Ocean while the intermediate water originates from both the North and South Pacific Ocean, even possibly from the Indian Ocean. Spreading through the Sulawesi Sea, the Makassar Strait, and file Flores Sea, the North Pacific subsurface water and the North Pacific Intermediate water dominate the western part of the Indonesian Archipelago. Furthermore as the depth increases, the features of the North Pacific sourced water masses become more obvious. In the eastern part of the waters, high sa- linity South Pacific subsurface water is blocked by a strong salinity front between Halmahera and New Guinea. Intermediate water in the eastern interior region owns salinity higher than the North Pacific intermediate water and the antarctic intermediate water ( AAIW), possibly coming from the vertical mixing between subsurface water and the AAIW from the Pacific Ocean, and possibly coming from the northward extending of the AAIW from the Indian Ocean as well. 展开更多
关键词 indonesian Throughflow subsurface water intermediate water ORIGIN PATHWAY
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Seasonal and interannual variability of water mass sources of Indonesian throughflow in the Maluku Sea and the Halmahera Sea 被引量:3
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作者 Lu Wang Lei Zhou +3 位作者 Lingling Xie Quanan Zheng Qiang Li Mingming Li 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2019年第4期58-71,共14页
So far, large uncertainties of the Indonesian throughflow(ITF) reside in the eastern Indonesian seas, such as the Maluku Sea and the Halmahera Sea. In this study, the water sources of the Maluku Sea and the Halmahera ... So far, large uncertainties of the Indonesian throughflow(ITF) reside in the eastern Indonesian seas, such as the Maluku Sea and the Halmahera Sea. In this study, the water sources of the Maluku Sea and the Halmahera Sea are diagnosed at seasonal and interannual timescales and at different vertical layers, using the state-of-the-art simulations of the Ocean General Circulation Model(OGCM) for Earth Simulator(OFES). Asian monsoon leaves clear seasonal footprints on the eastern Indonesian seas. Consequently, the subsurface waters(around 24.5σ_θ and at ~150 m) in both the Maluku Sea and the Halmahera Sea stem from the South Pacific(SP) during winter monsoon, but during summer monsoon the Maluku Sea is from the North Pacific(NP), and the Halmahera Sea is a mixture of waters originating from the NP and the SP. The monsoon impact decreases with depth, so that in the Maluku Sea, the intermediate water(around 26.8σ_θ and at ~480 m) is always from the northern Banda Sea and the Halmahera Sea water is mainly from the SP in winter and the Banda Sea in summer. The deep waters(around27.2σ_θ and at ~1 040 m) in both seas are from the SP, with weak seasonal variability. At the interannual timescale,the subsurface water in the Maluku Sea originates from the NP/SP during El Ni?o/La Ni?a, while the subsurface water in the Halmahera Sea always originates from the SP. Similar to the seasonal variability, the intermediate water in Maluku Sea mainly comes from the Banda Sea and the Halmahera Sea always originates from the SP. The deep waters in both seas are from the SP. Our findings are helpful for drawing a comprehensive picture of the water properties in the Indonesian seas and will contribute to a better understanding of the ocean-atmosphere interaction over the maritime continent. 展开更多
关键词 water mass indonesian THROUGHFLOW MONSOON ENSO Maluku SEA Halmahera SEA
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Heat contribution of the Indonesian throughflow to the Indian Ocean 被引量:3
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作者 Tiecheng Zhang Weiqiang Wang +1 位作者 Qiang Xie Lingfang Chen 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2019年第4期72-79,共8页
Based on the high-resolution Eulerian fields of an ocean general circulation model simulation, the heat contribution of the Indonesian throughflow(ITF) to the Indian Ocean is estimated by Lagrangian tracing method.The... Based on the high-resolution Eulerian fields of an ocean general circulation model simulation, the heat contribution of the Indonesian throughflow(ITF) to the Indian Ocean is estimated by Lagrangian tracing method.The heat transport of each particle of ITF waters is calculated by tracing temperature change along the trajectory until the particle exits the Indian Ocean. The simulation reveals that the ITF waters flow westward and branch near Madagascar, further showing the ITF waters are redistributed in both northern and southern Indian Ocean.Heat budget analysis indicates that the ITF waters gain 0.41 PW(Petawatts, 1015 W) in the northern Indian Ocean and lose 0.56 PW in the southern Indian Ocean, respectively. As a result, the ITF waters warm the whole Indian Ocean basin with only 0.15 PW, which shows an "insignificant" role of ITF on the Indian Ocean because of the heat exchange compensation between northern and southern Indian Ocean. Furthermore, the tracing pathways show that the ITF waters mainly flow out the Indian Ocean at both sides of the basin via Agulhas Current and Leeuwin Current. About 89% of the ITF waters leave along western boundary and the rest 11% along eastern boundary. Compared to seeding section, 0.10 PW and 0.05 PW are released to the Indian Ocean, respectively. 展开更多
关键词 indonesian THROUGHFLOW INDIAN OCEAN heat contribution
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Stable carbon and oxygen isotopes of four planktonic foraminiferal species from core-top sediments of the Indonesian throughflow region and their significance 被引量:3
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作者 ZHANG Peng ZURAIDA Rina +1 位作者 XU Jian YANG Ce 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2016年第10期63-75,共13页
Horizontal and vertical distributions of δ^18 and δ^13 were investigated in shells of four planktonic foraminiferal species, Globigerinoides ruber, Globigerinoides sacculifer, Pulleniatina obliquiloculata and Neoglo... Horizontal and vertical distributions of δ^18 and δ^13 were investigated in shells of four planktonic foraminiferal species, Globigerinoides ruber, Globigerinoides sacculifer, Pulleniatina obliquiloculata and Neogloboquedrina dutertrei, from a total of 62 core-top sediment samples from the Indonesian throughflow region. Results were compared to modern hydrologic conditions in order to explore potential of proxies in reconstructing fluvial discharge and upper ocean water column characteristics in this region. Our results show that, in the Makassar Strait, both of depleted δ^18 and δ^13 of these four species were linked to freshwater input. In the Bali Sea,however, depleted δ^18 and δ^13 for these species may be due to different reasons. Depleted δ^18 was a result of freshwater input and as well influenced by along-shore currents while depleted δ^13 was more likely due to the Java-Sumatra upwelling. Comparison of shell δ^18 records and hydrographic data of World Ocean Atlas 2005 suggests that G. ruber and G. sacculifer calcify within the mixed-layer, respectively at 0–50 m and 20–75 m water depth, and P. obliquiloculata and N. dutertrei within the upper thermocline, both at 75–125 m water depth. N.dutertrei calcifies at slightly deeper water depth than P. obliquiloculata does. In general, δ^13 values of both G.ruber and G. sacculifer are larger than those of P. obliquiloculata and N. dutertrei at all sites, possibly related to depth habitats of these species and vertical distribution of nutrients in the Indonesian throughflow region. 展开更多
关键词 planktonic foraminiferal δ^18O and δ^13C calcification depth freshwater input Java-Sumatra upwelling indonesian throughflow region
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Correlation analysis of the North Equatorial Current bifurcation and the Indonesian Throughflow 被引量:2
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作者 ZHAO Yunxia WEI Zexun +2 位作者 WANG Yonggang XU Tengfei FENG Ying 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2015年第9期1-11,共11页
Based on monthly mean Simple Ocean Data Assimilation (SODA) products from 1958 to 2007, this study analyzes the seasonal and interannual variability of the North Equatorial Current (NEC) bifurcation latitude and t... Based on monthly mean Simple Ocean Data Assimilation (SODA) products from 1958 to 2007, this study analyzes the seasonal and interannual variability of the North Equatorial Current (NEC) bifurcation latitude and the Indonesian Throughflow (ITF) volume transport. Further, Empirical Mode Decomposition (EMD) method and lag-correlation analysis are employed to reveal the relationships between the NEC bifurcation location, NEC and ITF volume transport and ENSO events. The analysis results of the seasonal variability show that the annual mean location of NEC bifurcation in upper layer occurs at 14.33°N and ITF volume transport has a maximum value in summer, a minimum value in winter and an annual mean transport of 7.75×10^6 m^3/s. The interannual variability analysis indicates that the variability of NEC bifurcation location can be treated as a precursor of El Nino. The correlation coefficient between the two reaches the maximum of 0.53 with a time lag of 2 months. The ITF volume transport is positively related with E1 Nifio events with a maximum coefficient of 0.60 by 3 months. The NEC bifurcation location is positively correlated with the ITF volume transport with a correlation coefficient of 0.43. 展开更多
关键词 North Equatorial Current bifurcation indonesian Throughflow Empirical Mode Decomposition lag- correlation analysis
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A METHOD TO ESTIMATE DYNAMIC HEIGHT AND GEOSTROPHIC TRANSPORT RELATIVE TO DEEPER LEVELS FROM 400M EXPENDABLE BATHYTHERMOGRAPH IN THE INDONESIAN THROUGHFLOW
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作者 曲堂栋 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 1995年第2期97-109,共13页
The Expendable Bathythermograph (XBT) Programme used a mix of T4 (450m) and T7(750 m) XBT’s during the pre-TOGA periods. Studies are needed to determine how to use the T4/T7 datatogether, in particular with regard to... The Expendable Bathythermograph (XBT) Programme used a mix of T4 (450m) and T7(750 m) XBT’s during the pre-TOGA periods. Studies are needed to determine how to use the T4/T7 datatogether, in particular with regard to a reference level for calculation of dynamic height and geostrophiccurrents. Temperature profiles to 750 m collected from 1986 through 1989 on the trackline across theIndonesian throughflow between NW Australia and Java are used to show the relations between dynamicbeight and geostriohic flow using reference levels at 400 db and 750 db. A very high temporalcorrelation between vertically averaged temperture in the upper 400 m and dynamic height at 50 m rela-tive to 750 db was found. The corresponding regression relationships are presented for all one degree lati-tude bins along the section and can be used for dynamical calculation of currents in the upper 400 m rel-ative to 750 db .An attempt is made to estimate volume transport relative to 750 db from 400 m pro-files. Problems which make 展开更多
关键词 SUBSURFACE temperature dynamic HEIGHT geostrophic transport correlation indonesian THROUGHFLOW
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Potent water extracts of Indonesian medicinal plants against PTP1B
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作者 Azis Saifudin Tepy Usia +3 位作者 Subehan Ab Lallo Hiroyuki Morita Ken Tanaka Yasuhiro Tezuka 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2016年第1期38-43,共6页
Objective:To examine the potent of water as a solvent agent in the preparation of traditional herbal medicine.Methods:Water extracts of 18 plants were prepared through reflux and examined(25μg/mL) to evaluate their p... Objective:To examine the potent of water as a solvent agent in the preparation of traditional herbal medicine.Methods:Water extracts of 18 plants were prepared through reflux and examined(25μg/mL) to evaluate their possibility for inhibiting protein tyrosine phosphatase 1B(PTP1B).The determination of IC50 values was performed for the samples possessing more than 80%inhibition.Meanwhile,those exhibiting IC50 values more than 7.0 μg/mL were further profiled for their chemical constituents through nuclear magnetic resonance(NMR) measurement.Results:About 44%(8) of the examined samples showed more than 80%inhibition against PTP1 B.The water extracts of Elephantopus scaber,Helicteres isora aerial parts,Elaeocarpus grandiflorus(E.grandiflorus) fruits,Melaleuca leucadendron leaves,and Quercus infectoria gum had IC50 values ranging from 2.05 to 6.90 μg/mL.Meanwhile,Andropogon nardus and Centella asiatica were at the area of δ 3.0-4.0 ppm.Further,the13 C NMR observation of samples possessing the most intensive signals in their proton NMR Cinnamomum burmannii and E.grandiflorus showed the peaks at the area of δ 60-90 ppm as the supportive evidence for sugar group signals.Intriguingly,a disaccharide from E.grandiflorus could be an active inhibitor towards PTB1 B.Conclusions:In contrast to the mainstream solvents currently used in modern herbal manufactures especially Jamu medicine in Indonesia,pure-water-extracted materials should be reconsidered and could be reemerged for future studies and for the manufacture of herbal medicines.In addition,the activity of Jamu components should be confirmed that their antidiabetes and antiobesity activities could be through the inhibition of PTP1 B. 展开更多
关键词 Water EXTRACT indonesian MEDICINAL plants PTP1B inhibitor Diabetes CARBOHYDRATE Nuclear magnetic resonance
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The IOD signal in the upper-ocean Indonesian Throughflow since the mid-1970s
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作者 LAN Jian SUN Shuangwen HONG Jieli 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2007年第4期1-6,共6页
On the basis of simple ocean data assimilation (SODA) reanalysis product, the interannual variability of upper-ocean Indonesian Throughflow (ITF) volume transport since the mid 1970s is examed. The wavelet analysi... On the basis of simple ocean data assimilation (SODA) reanalysis product, the interannual variability of upper-ocean Indonesian Throughflow (ITF) volume transport since the mid 1970s is examed. The wavelet analysis shows a second prominent interannual oscillation with a period of about 2 ~ 4 a. To reveal any relationship between this band-scale oscillation of upper-ocean ITF and the Indian Ocean dipole (IOD), the correlation and wavelet analyses are used. The correlation coefficient between the upper-ocean ITF and the IOD reaches - 0.40 with upper-ocean ITF lagging an IOD index by eight months. The wavelet power spectrum of upper-ocean ITF shows similar structure to that of the IOD index. And the evolution of IOD is reproduced by lagged correlation between the upper-ocean ITF and the sea surface temperature anomaly (SSTA) over the Indian Ocean. It suggests that the 2 ~ 4 a band-scale oscillation of upper-ocean ITF is related uniquely to the IOD over the tropical Indian Ocean. 展开更多
关键词 indonesian Throughflow Indian Ocean dipole interannual variability
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Geochemical characteristics from tests of four modern planktonic foraminiferal species in the Indonesian Throughflow region and their implications
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作者 Peng Zhang Rina Zuraida +3 位作者 Yair Rosenthal Ann Holbourn Wolfgang Kuhnt Jian Xu 《Geoscience Frontiers》 SCIE CAS CSCD 2019年第2期505-516,共12页
Test geochemistry of planktonic foraminifera is an indispensable tool in reconstructing past ocean hydrological changes. It is essential to investigate region-specific implications of test geochemistry,although those ... Test geochemistry of planktonic foraminifera is an indispensable tool in reconstructing past ocean hydrological changes. It is essential to investigate region-specific implications of test geochemistry,although those established from other regions can be broadly applied. In this study, characteristics of6180 and Mg/Ca from tests of four planktonic foraminiferal species, Globigerinoides ruber sensu stricto(s.s.), Globigerinoides sacculifer, Pulleniatina obliquiloculata and Neogloboquadrina dutertrei, from 60 coretop sediment samples retrieved from the Indonesian Throughflow(ITF) region were studied. These geochemical data were compared with modern hydrographic profiles in order to assess their relations and to investigate potential implications of test geochemical parameters in reconstructing past oceanographic change in the ITF region. Calcification depths of these four species were first estimated based on comparison between measured test δ180 and predicted calcite δ^(18)O that was calculated from modern temperature and salinity. The results indicate that G. ruber s.s. and G. sacculifer calcify within the mixedlayer at 0-50 m and 20-75 m, respectively, whereas P. obliquiloculata and N. dutertrei calcify within the thermocline at around 75 to 125 m. A combined study of excess Mg/Ca(difference between measured and predicted Mg/Ca) and salinity suggests that salinity exerts a negligible impact on test Mg/Ca of these foraminiferal species in the ITF region. Comparison of test Mg/Ca-derived temperatures with temperature profiles of the upper 200 m of the water column from the seas of the ITF region also indicate calcification depths of these species, which match well with the above estimations using test δ^(18)O. It further indicates that G. sacculifer may be more sensitive in reflecting changes in the depth of the mixedlayer, highlighting a potential use of Mg/Ca temperature difference between G. ruber s.s. and G. sacculifer in reconstructing the depth of the mixed-layer in the ITF region. 展开更多
关键词 Test geochemistry MULTI-SPECIES Planktonic foraminifera Core-top sediments indonesian Throughflow region
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Antiphytophthora and antifusarium from Indonesian medicinal plants
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作者 S.Sukrasno Diah Lia Aulifa +1 位作者 Yenni Karlina Nyoman P.Aryanthad 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2016年第1期28-29,共2页
Phytophthora and Fusarium are two phytopathogenic fungi that are frequently faced by farmer.A number of Indonesian medicinal plants have been traditionally used to treat skin diseases due to fungal infection.Some of t... Phytophthora and Fusarium are two phytopathogenic fungi that are frequently faced by farmer.A number of Indonesian medicinal plants have been traditionally used to treat skin diseases due to fungal infection.Some of the Indonesian medicinal plants have been tested and found to be active as antifungal agents.These plants were studied for the capacity to inhibit the growth of Phytophthora and Fusarium.The medicinal plants tested included Piper betle leaves,Piper crocatum leaves,Syzigium aromaticum leaves and flower,Ageratum conyzoides leaves,Cassia alata leaves,Cymbopogon nardus leaves,Curcuma domestica rhizome,Curcuma xanthorrhiza rhizome,Curcuma zedoaria rhizome,Alpinia galangae rhizome,Zingiber officinale rhizome,Acorus calamus rhizome,Allium sativum bulb,Cinnamomum cardamom cortex,Garcinia mangostana fruit cortex and Ecliptica alba herb.Extraction was performed by macerating 10 g of medicinal plant powder with 100 mL methanol for 48 hours,and the extract obtained was evaporated to dryness.The extract was tested at 0.5 and 1%in water containing 2%Tween-80. 展开更多
关键词 indonesian MEDICINAL PLANTS Antiphytopthora Antifusarium
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An Intonation Speech Synthesis Model for Indonesian Using Pitch Pattern and Phrase Identification
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作者 Yohanes Suyanto Subanar   +1 位作者 Agus Harjoko Sri Hartati 《Journal of Signal and Information Processing》 2014年第3期80-88,共9页
Prosody in speech synthesis systems (text-to-speech) is a determinant of tone, duration, and loudness of speech sound. Intonation is a part of prosody which determines the speech tone. In Indonesian, intonation is det... Prosody in speech synthesis systems (text-to-speech) is a determinant of tone, duration, and loudness of speech sound. Intonation is a part of prosody which determines the speech tone. In Indonesian, intonation is determined by the structure of sentences, types of sentences, and also the position of the word in a sentence. In this study, a model of speech synthesis that focuses on its intonation is proposed. The speech intonation is determined by sentence structure, intonation patterns of the example sentences, and general rules of Indonesian pronunciation. The model receives texts and intonation patterns as inputs. Based on the general principle of Indonesian pronunciation, a prosody file was made. Based on input text, sentence structure is determined and then interval among parts of a sentence (phrase) can be determined. These intervals are used to correct the duration of the initial prosody file. Furthermore, the frequencies in prosody file were corrected using intonation patterns. The final result is prosody file that can be pronounced by speech engine application. Experiment results of studies using the original voice of radio news announcer and the speech synthesis show that the peaks of?F0?are determined by general rules or intonation patterns which are dominant. Similarity test with the PESQ method shows that the result of the synthesis is 1.18 at MOS-LQO scale. 展开更多
关键词 SPEECH Synthesis PESQ INTONATION indonesian
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Sex education for adolescents:Indonesian nurse educators’experience as parents
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作者 Alvin Salim Evelyn Hemme Tambunan 《Frontiers of Nursing》 2022年第3期303-310,共8页
Objectives:Sex education toward adolescent remains the most controversial subject due to the various thoughts and ideas of different values present in society.Nurse educators as parents must exemplify sex education to... Objectives:Sex education toward adolescent remains the most controversial subject due to the various thoughts and ideas of different values present in society.Nurse educators as parents must exemplify sex education to their children.The aim of this present study was to explore parents’experience,with nurse educators background to be exact,on how they convey sex education to their children.Methods:This study is a descriptive qualitative study,and the sample is recruited by using the purposive sampling technique.The qualified participants filled in the informed consent,provided demographic data,and were interviewed.Saturation data were obtained at the 6th interview in this study.The interview is transcribed to find themes and subthemes using conventional content analysis.Results:We derived 3 main themes:parents’approach,sex education topic,and children’s reaction.Parents’approach contained 4 subthemes,namely,gender match,parent-child closeness,media,and attitude.Sex education topic included 5 subthemes of bodily autonomy,health and safety,reproductive anatomy,puberty-related changes,and how to maintain healthiness.Children’s reaction experiences also included 4 subthemes of uncomfortable,questioning,acknowledging,and laughing.Conclusions:As a matter of fact,some parents in eastern countries,such as Indonesia,conveyed sex education to their children.Children might have various reactions to that topic,but it is important to keep them safe,especially in reproductive health,regardless of the culture or tradition.Based on nurse educators as exemplifiers,nurses and nursing students might acquire the picture in conveying sex education to adolescents. 展开更多
关键词 ADOLESCENT experiences indonesian nurse educators parents and sex education
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Research on Indonesian Breakthrough Level Students’Oral Chinese Learning Strategies
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作者 Ayu Trihardini 《宏观语言学》 2018年第2期87-97,共11页
The purpose of this study is to analyze the learning strategies used by Indonesian breakthrough level students(CEFR A1)in attempt to master oral Chinese.The collected data are the answers made by students of Mandarin ... The purpose of this study is to analyze the learning strategies used by Indonesian breakthrough level students(CEFR A1)in attempt to master oral Chinese.The collected data are the answers made by students of Mandarin Language Department UNJ who attend Conversation I course(CEFR A1/breakthrough)on questionnaire given.The questionnaire is based on Oxford’s(2000)Strategy Inventory for Language Learning(SILL)as well as is combined with Li Jiang(2006)’s SILL Oral Chinese.The research results can be used to develop the teaching techniques which stimulate students to use the most useful strategies to master oral Chinese. 展开更多
关键词 ORAL Chinese learning STRATEGIES indonesian STUDENTS
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The Securitization of Culture of Chinese Indonesian:Paths,Failure,and Constraints
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作者 PAN Yue XIAO Qin 《International Relations and Diplomacy》 2022年第4期158-174,共17页
Indonesian Chinese culture is a part of Indonesian multiculturalism.However,it is challenged by“securitization”.Taking two cases as examples to explain the“securitization”of Indonesian Chinese culture.Several secu... Indonesian Chinese culture is a part of Indonesian multiculturalism.However,it is challenged by“securitization”.Taking two cases as examples to explain the“securitization”of Indonesian Chinese culture.Several securitizing actors claimed that Guan Yu statue and lanterns are symbols of Chinese culture,and they claimed that they threaten the national security of Indonesia.The securitizing carriers attempt to influence the judgment of the audiences through agenda-setting and framing effects.Nevertheless,the audiences have not fully accepted the securitizing move because the Indonesians regarded the anti-Jokowi forces’tactics and“China Threat Theories”have not yet reached a consensus.The reason for the failure of this securitization process is about aspects,including the on-ground views on the cultural expressions and practices of Chineseness,the public identified the usual tricks of the anti-Jokowi forces,and there is no consensus on the so-called“China Threat Theories”in Indonesia.To preserve and promote Chineseness under the multicultural agenda,several measures have been implemented by the Indonesian government to promote the harmonious development of ethnic groups and multicultural integration in Indonesia to a certain extent. 展开更多
关键词 culture of Chinese indonesian CHINESENESS SECURITIZATION anti-Jokowi forces “China Threat Theory”
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