Social and Behavioral Sciences Commons^™

Assessing The Potential For Tropical Cyclone Induced Sea Surface Cooling To Reduce Thermal Stress On The World's Coral Reefs, Adam D. Carrigan, Marjetta L. Puotinen

Faculty of Science - Papers (Archive)

Coral reefs face an uncertain future as rising sea surface temperature (SST) continues to lead to increasingly frequent and intense mass bleaching. At broad spatial scales, tropical cyclone (TC) induced cooling of the upper ocean (SST drops up to 6° C persisting for weeks) reduces thermal stress and accelerates recovery of bleached corals - yet the global prevalence and spatial distribution of this effect remains undocumented and unquantified. A global dataset (1985–2009) of TC wind exposure was constructed and examined against existing thermal stress data to address this. Significant correlations were found between TC activity and the severity of thermal …

Tectonic Implications Of Early Paleozoic Metamorphism In The Anakie Inlier, Central Queensland, Australia, R Offler, G Phillips, C L. Fergusson, T J. Green

Faculty of Science - Papers (Archive)

Well-defined metamorphic zones are developed in pelitic and psammitic rocks of the Late Neoproterozoic to Cambrian Anakie Metamorphic Group of the Anakie Inlier, central Queensland. They are defined by the incoming of biotite, garnet, and andalusite, with or without staurolite. Mineral assemblages indicate that low pressure-high temperature metamorphism is associated with D1, medium pressure-high temperature metamorphism with D2, and retrograde, low pressure-low temperature metamorphism with D3. A mean b cell parameter of 9.035 obtained from K-white micas in the lowest-grade rocks suggests upper intermediate pressure conditions during D2. The timing of the growth of the index minerals indicates that isotherms …

Spectroscopic And Computational Study Of Β-Ethynylphenylene Substituted Zinc And Free-Base Porphyrins, John C. Earles, Keith C. Gordon, Adam W. I Stephenson, Ashton C. Partridge, David L. Officer

Faculty of Science - Papers (Archive)

A series of tetraphenylporphyrins appended at the β-pyrrolic position with an ethynylphenylene- or ethynylpyridine-substituent have been subjected to spectroscopic and density functional theory (DFT) analyses. The mean absolute deviation between corresponding experimental and DFT-derived vibrational spectra is up to 10.2 cm -1, suggesting that the DFT B3LYP/6-31G(d) method provides an accurate model of the β-substituted porphyrin systems. The configuration interactions that give rise to prominent electronic absorptions have been calculated using time-dependant DFT (TD-DFT) and have been rationalized with reference to the energy and topology of DFT calculated molecular orbitals. As the electron withdrawing capacity of the β-substituent increases the …

Conclusion: Tackling The 'Missing Scale' In Environmental Policy, Ruth Lane, Andrew W. Gorman-Murray

Faculty of Science - Papers (Archive)

The foregoing chapters have demonstrated that household sustainability is a complex issue that requires thoughtful discussion from multiple perspectives. Indeed throughout this collection we have encouraged a dialogical approach. On the one hand our aim has been to bring researchers from human geography and cultural studies into a productive dialogue around the material geographies of household sustainability. There has been enthusiastic cross-fertilisation of ideas and approaches shown through the chapters, which critically develop the interconnections between the material, socia-technical, culturaJ, embodied and political dimensions which make households function, with particular attention to how they (might) function in environmentally sustainable ways. …

Remote Sensing Of Atmospheric Trace Gases By Ground-Based Solar Fourier Transform Infrared Spectroscopy, Clare Paton-Walsh

Faculty of Science - Papers (Archive)

The changing composition of the earth’s atmosphere is a matter of intense scientific research as we strive to understand details of the physical and chemical mechanisms that control our climate. Fourier transform spectroscopy has been applied very successfully to the study of trace gases in the atmosphere by examining terrestrial atmospheric absorption lines in the infrared spectrum from the Sun. In fact many gases were first discovered in the atmosphere during the 1940’s from their absorption features in the infrared solar spectrum. These early optical absorption measurements of the atmosphere using the Sun as a source were made with grating …

Electronic Interactions Within Composites Of Polyanilines Formed Under Acidic And Alkaline Conditions. Conductivity, Esr, Raman, Uv-Vis And Fluorescence Studies, L Dennany, P C. Innis, S T. Mcgovern, Gordon G. Wallace, Robert J. Forster

Faculty of Science - Papers (Archive)

The properties of two forms of polyaniline (PAni) synthesised under acidic and basic conditions have been investigated both individually and as combined complexes. The PAni polymerised within alkaline media was redox inactive and non-conducting while the PAni emeraldine salt (ES) was electroactive and conducting. Raman, electron spin resonance, UV-Vis and fluorescence spectroscopies were used to monitor the changes in electronic properties of these conducting polymer composites. Solution cast films of alkaline synthesised (A-PAni) with the PAni ES resulted in an increase in the high spin polaron population suggesting that it acts as a pseudodopant. The ability of the A-PAni to …

Influence Of Salicylic Acid On Alkaloid Production By Root Cultures Of Stemona Curtisii Hook. F., K. Chotikadachanarong, S. Dheeranupattana, Chaiwat Jatisatienr, S. Wangkarn, Pitchaya Mungkornasawakul, Stephen G. Pyne, Alison T. Ung, Thanapat Sastraruji

Faculty of Science - Papers (Archive)

To enhance the production of oxyprotostemonine, stemocurtisine and stemocurtisinol (the important insecticidal alkaloids) by root cultures of Stemona curtisii Hook. F. (Thai vernacular, Non Tai Yak, Family Stemonaceae). The roots were cultured on semi-solid MS medium containing 1 mg/L NAA with different concentrations of salicylic acid for 16 weeks. The quantity of the individual alkaloids was determined by HPLC. The highest production of oxyprotostemonine (7.192 mg/g dw), stemocurtisine (0.039 mg/g dw) and stemocurtisinol (0.197 mg/g dw) occurred when the roots were stimulated by 500 mg/L salicylic acid.

Understanding The Α-Crystallin Cell Membrane Conjunction, Shih-Ping Su, Jason D. Mcarthur, Michael G. Friedrich, Roger J. W Truscott, J. A. Aquilina

Faculty of Science - Papers (Archive)

PURPOSE. It is well established that levels of soluble α-crystallin in the lens cytoplasm fall steadily with age, accompanied by a corresponding increase in the amount of membrane-bound α-crystallin. Less well understood, is the mechanism driving this age-dependent membrane association. The aim of this study was to investigate the role of the membrane and its associated proteins and peptides in the binding of α-crystallin.

METHODS. Fibre cell membranes from human and bovine lenses were separated from soluble proteins by centrifugation. Membranes were stripped of associated proteins with successive aqueous, urea and alkaline solutions. Protein constituents of the respective membrane isolates …

Gellan Gum Doped Polypyrrole Neural Prosthetic Electrode Coatings, Thomas M. Higgins, Simon E. Moulton, Kerry J. Gilmore, Gordon G. Wallace, Marc In Het Panhuis

Faculty of Science - Papers (Archive)

Surface modification of neural prosthetic electrodes with polymeric materials, in particular, conducting polymers and hydrogels, has the potential to circumvent many problems associated with currently used electrode platforms. These problems include the disparity in mechanical properties between implanted electrodes and host neural tissue and the lack of biofunctionality at the electrode surface, both of which dissuade favourable reception of the implanted device. We have developed conducting polymer electrode coatings doped with the polysaccharide gellan gum, as a platform for improved functionality of neural prosthetic electrodes. Our electrode coatings, prepared by galvanostatic electropolymerisation, significantly reduced the impedance magnitude at frequencies relevant …

Rocky Intertidal Temperature Variability Along The Southeast Coast Of Australia: Comparing Data From In Situ Loggers, Satellite-Derived Sst And Terrestrial Weather Stations, Justin Adam Lathlean, David J. Ayre Prof, Todd E. Minchinton

Faculty of Science - Papers (Archive)

Predicting how both spatial and temporal variation in sea and air temperature influence the distribution of intertidal organisms is a pressing issue. We used data from satellites, weather stations and in situ loggers to test the hypothesis that satellite-derived sea surface temperatures (SSTs) and weather station air temperatures provide accurate estimates of ambient temperature variability on rocky intertidal shores for temporal (hourly for 1 yr) and spatial (10 m to 400 km) variation along the southeast coast of Australia. We also tested whether satellites and weather stations accurately detect the duration, frequency and number of extreme temperature events. Daily mean …

Importance Of Secondary Sources In The Atmospheric Budgets Of Formic And Acetic Acids, Fabien Paulot, Debra Wunch, John D. Crounse, G C. Toon, Dylan B. Millet, Peter F. Decarlo, C Vigouroux, Nicholas M. Deutscher, G Gonzalez Abad, Justus Notholt, Thorsten Warneke, J Hannigan, Carsten Warneke, Joost A. De Gouw, Edward Dunlea, M De Maziere, David W. Griffith, P Bernath, J L. Jimenez, Paul O. Wennberg

Faculty of Science - Papers (Archive)

We present a detailed budget of formic and acetic acids, two of the most abundant trace gases in the atmosphere. Our bottom-up estimate of the global source of formic and acetic acids are ~1200 and ~1400 Gmol yr−1, dominated by photochemical oxidation of biogenic volatile organic compounds, in particular isoprene. Their sinks are dominated by wet and dry deposition. We use the GEOS-Chem chemical transport model to evaluate this budget against an extensive suite of measurements from ground, ship and satellite-based Fourier transform spectrometers, as well as from several aircraft campaigns over North America. The model captures the seasonality of …

Temporal Stability Of A Hybrid Swarm Between The Migratory Marine And Estuarine Fishes Acanthopagrus Australis And A. Butcheri, David G. Roberts, Charles A. Gray, Ronald J. West, David J. Ayre

Faculty of Science - Papers (Archive)

We predict estuaries to be hotspots of hybridisation between migratory marine and estuary-restricted species, although hybridisation rates may vary in space and time, reflecting the dynamic nature of estuaries and potentially widespread but erratic dispersal of marine taxa. Within estuaries, genotype frequencies may reflect past hybridisation events, with genetically intermediate and backcrossed individuals contributing to persistent hybrid swarms. In southeastern Australia, hybridisation has occurred between estuarine black bream Acanthopagrus butcheri and marine yellowfin bream A. australis, but it is unclear whether this reflects a contemporary process. We recently found that, within lakes and lagoons at the southern range limit of …

The Art Of Learning: Wildfire, Amenity Migration And Local Environmental Knowledge, Christine Eriksen, T Prior

Faculty of Science - Papers (Archive)

Communicating the need to prepare well in advance of the wildfire season is a strategic priority for wildfire management agencies worldwide. However, there is considerable evidence to suggest that although these agencies invest significant effort towards this objective in the lead up to each wildfire season, landholders in at-risk locations often remain under-prepared. One reason for the poor translation of risk information materials into actual preparation may be attributed to the diversity of people now inhabiting wildfire-prone locations in peri-urban landscapes. These people hold widely varying experiences, beliefs, attitudes and values relating to wildfire, which influence their understanding and interpretation …

Integrated Coastal Zone Management Research In Australia And China, X H. Wang, X Xu, S G. Pearson, G Xue, Robert J. Morrison, D Liu, P Shi

Faculty of Science - Papers (Archive)

This paper reviews the current Integrated and Coastal Zone Management (ICZM) research in coastal zone science and policy for Australia and China. It seeks to make a coherent contribution to understanding the Chinese and Australian research and management through a brief description of the similarities and differences in an integrated way. The paper draws together the research needs for the ICZM in both countries with the aim of justifying the research investments needed in the future. Based on this review, we recommend five research programs: Coastal Ocean Observing and Forecasting System and its Socio-economic Impact; Review and Utilization of Space-borne …

In The Heat Of The Night - Alternative Pathway Respiration Drives Thermogenesis In Philodendron Bipinnatifidum, Rebecca Miller, N. Grant, L. Giles, Miquel Ribas-Carbo, J. A. Berry, Jennifer Watling, Sharon A. Robinson

Faculty of Science - Papers (Archive)

Philodendron bipinnatifidum inflorescences heat up to 42ºC and thermoregulate. We investigated whether they generate heat via the cytochrome oxidase pathway uncoupled by uncoupling proteins (pUCPs), or the alternative oxidase (AOX). Contribution of AOX and pUCPs to heating in fertile (FM) and sterile (SM) male florets was determined using a combination of oxygen isotope discrimination, protein and substrate analyses. FM and SM florets thermoregulated independently for up to 30h ex planta. In both floret types, AOX contributed more than 90% of respiratory flux during peak heating. AOX protein increased 5-fold with the onset of thermogenesis in both floret types, whereas pUCP …

Digit Ratio, Color Polymorphism And Egg Testosterone In The Australian Painted Dragon, Michael Tobler, Mo Healey, Mats Olsson

Faculty of Science - Papers (Archive)

Variation in exposure to sex hormones during early development contributes to phenotypic plasticity in vertebrate offspring. As a proposed marker for prenatal sex hormone exposure and because of their association with various physiological and behavioral characteristics, digit ratio and/or digit length have received notable interest within the field of evolutionary ecology. However, the validity of digit measures as a proxy of prenatal sex hormone exposure is controversial and only few studies have provided direct evidence for the link between digit development and prenatal sex hormones. Here, we report morph- and sex-specific variation in digit ratio in wild painted dragon lizards …

Speciation Of Dissolved Inorganic Arsenic By Diffusive Gradients In Thin Films: Selective Binding Of Asiii By 3-Mercaptopropyl-Functionalized Silica Gel, William W. Bennett, Peter R. Teasdale, Jarad G. Panther, David T. Welsh, Dianne F. Jolley

Faculty of Science - Papers (Archive)

A diffusive gradients in thin films (DGT) technique for selectively measuring AsIII utilizes commercially available 3-mercaptopropyl- functionalized silica gel. Deployment of the new technique alongside the Metsorb-DGT for total inorganic arsenic allows the calculation of As III directly and AsV by difference. Uptake of As III by mercapto-silica was quantitative and elution with a mixture of 1 mol L-1 HNO3 and 0.01 mol L-1 KIO 3 gave a recovery of 85.6 + 1.7%. DGT validation experiments showed linear accumulation of AsIII over time (R2 > 0.998). Accumulation was unaffected by varying ionic strength (0.0001-0.75 mol L-1 NaNO3) and pH (3.5-8.5). Deployment …

Sources Of Carbonaceous Aerosols And Deposited Black Carbon In The Arctic In Winter-Spring: Implications For Radiative Forcing, Q Wang, D J. Jacob, J A. Fisher, J Mao, E M. Leibensperger, C C. Carouge, P Le Sager, Y Kondo, J L. Jimenez, M J. Cubison, S J. Doherty

Faculty of Science - Papers (Archive)

We use a global chemical transport model (GEOS-Chem CTM) to interpret observations of black carbon (BC) and organic aerosol (OA) from the NASA ARCTAS aircraft campaign over the North American Arctic in April 2008, as well as longer-term records in surface air and in snow (2007-2009). BC emission inventories for North America, Europe, and Asia in the model are tested by comparison with surface air observations over these source regions. Russian open fires were the dominant source of OA in the Arctic troposphere during ARCTAS but we find that BC was of prevailingly anthropogenic (fossil fuel and biofuel) origin, particularly …

Analysis Of Macrobenthic Assemblages Of Lake Illawarra, New South Wales, B Li, Robert John Morrison

Faculty of Science - Papers (Archive)

1 - A survey of the macrobenthos community was carried out in Lake Illawarra, NSW, Australia, during April and May 2011. 2 - The aim of this study was to understand the current status of the characteristic macrobenthic fauna community, and the temporal changes over the past 30 years, as well as the impacts of anthropogenic activities on the benthic ecosystem. 3- Fifteen stations were selected as representative of three main areas of the lake (the entrance channel, the central basin and the sublittoral fringe), which might be impacted by different kinds of human activities. 4 - A total of …

Sources, Distribution, And Acidity Of Sulfate-Ammonium Aerosol In The Arctic In Winter-Spring, Jenny A. Fisher, Daniel J. Jacob, Q Wang, Roya Bahreini, C C. Carouge, M J. Cubison, Jack E. Dibb, Thomas Diehl, J L. Jimenez, E M. Leibensperger, Zifeng Lu, Marcel B.J Meinders, H. O T. Pye, Patricia K. Quinn, Sangeeta Sharma, David G. Streets, Aaron Van Donkelaar, R M. Yantosca

Faculty of Science - Papers (Archive)

We use GEOS-Chem chemical transport model simulations of sulfate–ammonium aerosol data from the NASA ARCTAS and NOAA ARCPAC aircraft campaigns in the North American Arctic in April 2008, together with longer-term data from surface sites, to better understand aerosol sources in the Arctic in winter–spring and the implications for aerosol acidity. Arctic pollution is dominated by transport from mid-latitudes, and we test the relevant ammonia and sulfur dioxide emission inventories in the model by comparison with wet deposition flux data over the source continents. We find that a complicated mix of natural and anthropogenic sources with different vertical signatures is …

Effects Of Aging On Organic Aerosol From Open Biomass Burning Smoke In Aircraft And Laboratory Studies, M J. Cubison, A M. Ortega, P L. Hayes, D K. Farmer, D Day, M J. Lechner, W H. Brune, E Apel, G S. Diskin, J A. Fisher, H E. Fuelberg, A Hecobian, D J. Knapp, T Mikoviny, D Riemer, G W. Sachse, W Sessions, R Weber, A J. Weinheimer, A Wisthaler, J L. Jimenez

Faculty of Science - Papers (Archive)

Biomass burning (BB) is a large source of primary and secondary organic aerosols (POA and SOA). This study addresses the physical and chemical evolution of BB organic aerosols. Firstly, the evolution and lifetime of BB POA and SOA signatures observed with the Aerodyne Aerosol Mass Spectrometer are investigated, focusing on measurements at high-latitudes acquired during the 2008 NASA ARCTAS mission, in comparison to data from other field studies and from laboratory aging experiments. The parameter f60 , the ratio of the integrated signal at m/z 60 to the total signal in the organic component mass spectrum, is used as a …

Nanoesi Mass Spectrometry Of Rubisco And Rubisco Activase Structures And Their Interactions With Nucleotides And Sugar Phosphates, Michelle Blayney, Spencer M. Whitney, Jennifer L. Beck

Faculty of Science - Papers (Archive)

Ribulose bisphosphate carboxylase/oxygenase (Rubisco) is the protein that is responsible for the fixation of carbon dioxide in photosynthesis. Inhibitory sugar phosphate molecules, which can include its substrate ribulose-1,5- bisphosphate (RuBP), can bind to Rubisco catalytic sites and inhibit catalysis. These are removed by interaction with Rubisco activase (RA) via an ATP hydrolytic reaction. Here we show the first nanoESI mass spectra of the hexadecameric Rubisco and of RA from a higher plant (tobacco). The spectra of recombinant, purified RA revealed polydispersity in its oligomeric forms (up to hexamer) and that ADP was bound. ADP was removed by dialysis against a …

The Influence Of Sediment Particle Size And Organic Carbon On Toxicity Of Copper To Benthic Invertebrates In Oxic/Suboxic Surface Sediments, David Strom, Stuart L. Simpson, Graeme E. Batley, Dianne F. Jolley

Faculty of Science - Papers (Archive)

The use of sediment quality guidelines to predict the toxicity of metals in sediments is limited by an inadequate understanding of exposure pathways and by poor causal links between exposure and effects. For a 10-d exposure to Cu-spiked sediments, toxicity to the amphipod Melita plumulosa was demonstrated to occur through a combination of dissolved and dietary Cu exposure pathways, but for the bivalves Spisula trigonella and Tellina deltoidalis, toxicity occurred primarily by exposure to dissolved Cu. For relatively oxidized sediments that had moderate amounts of organic carbon (2.6-8.3% OC), silt (20-100%

How Well Do Predators Adjust To Climate-Mediated Shifts In Prey Distribution? A Study On Australian Water Pythons, Beata Ujvari, Rick Shine, Thomas Madsen

Faculty of Science - Papers (Archive)

Climate change can move the spatial location of resources critical for population viability, and a species resilience to such changes will depend upon its ability to flexibly shift its activities away from no-longer-suitable sites to exploit new opportunities. Intuition suggests that vagile predators should be able to track spatial shifts in prey availability, but our data on water pythons (Liasis fuscus) in tropical Australia suggest a less encouraging scenario. These pythons undergo regular long-range (to .10 km) seasonal migrations to follow flooding-induced migrations by their prey (native dusky rats, Rattus colletti ). However, when an extreme flooding event virtually eliminated …

Daily And 3-Hourly Variability In Global Fire Emissions And Consequences For Atmospheric Model Predictions Of Carbon Monoxide, M Mu, James Randerson, G R. Van Der Werf, L Giglio, Prasad Kasibhatla, D Morton, G J. Collatz, R S. Defries, E J. Hyer, E M. Prins, David W. Griffith, Debra Wunch, G C. Toon, V Sherlock, Paul O. Wennberg

Faculty of Science - Papers (Archive)

"Attribution of the causes of atmospheric trace gas and aerosol variability often requires the use of high resolution time series of anthropogenic and natural emissions inventories. Here we developed an approach for representing synoptic-and diurnal-scale temporal variability in fire emissions for the Global Fire Emissions Database version 3 (GFED3). We disaggregated monthly GFED3 emissions during 2003-2009 to a daily time step using Moderate Resolution Imaging Spectroradiometer (MODIS)-derived measurements of active fires from Terra and Aqua satellites. In parallel, mean diurnal cycles were constructed from Geostationary Operational Environmental Satellite (GOES) Wildfire Automated Biomass Burning Algorithm (WF_ABBA) active fire observations. Daily variability …

Retrieval Of Atmospheric Co2 With Enhanced Accuracy And Precision From Sciamachy: Validation With Fts Measurements And Comparison With Model Results, M Reuter, H Bovensmann, M Buchwitz, Jp Burrows, B Connor, Nicholas M. Deutscher, David W. Griffith, J Heymann, Gretchen Keppel-Aleks, Janina Messerschmidt, Justus Notholt, Christof Petri, J Robinson, O Schneising, V Sherlock, Voltaire A. Velazco, Thorsten Warneke, Paul O. Wennberg, Debra Wunch

Faculty of Science - Papers (Archive)

The Bremen Optimal Estimation differential optical absorption spectroscopy (DOAS) (BESD) algorithm for satellite based retrievals of XCO 2 (the column-average dry-air mole fraction of atmospheric CO 2) has been applied to Scanning Imaging Absorption Spectrometer for Atmospheric Cartography (SCIAMACHY) data. It uses measurements in the O 2-A absorption band to correct for scattering of undetected clouds and aerosols. Comparisons with precise and accurate ground-based Fourier transform spectrometer (FTS) measurements at four Total Carbon Column Observing Network (TCCON) sites have been used to quantify the quality of the new SCIAMACHY XCO 2 data set. Additionally, the results have been compared to …

The Age Of The 20 Meter Solo River Terrace, Java, Indonesia And The Survival Of Homo Erectus In Asia, Etty Indriati, Carl C. Swisher, Christopher Lepre, Rhonda L. Quinn, Rusyad A. Suriyanto, Agus T. Hascaryo, Rainer Grun, Craig S. Feibel, Briana L. Pobiner, Maxime Aubert, Wendy Lees, Susan C. Anton

Faculty of Science - Papers (Archive)

Homo erectus was the first human lineage to disperse widely throughout the Old World, the only hominin in Asia through much of the Pleistocene, and was likely ancestral to H. sapiens. The demise of this taxon remains obscure because of uncertainties regarding the geological age of its youngest populations. In 1996, some of us co-published electron spin resonance (ESR) and uranium series (U-series) results indicating an age as young as 35-50 ka for the late H. erectus sites of Ngandong and Sambungmacan and the faunal site of Jigar (Indonesia). If correct, these ages favor an African origin for recent humans …

The Dirt On Assessing Post-Fire Erosion In The Mount Lofty Ranges: Comparing Methods, Rowena H. Morris, Solomon Buckman, Paul Connelly, Deirdre Dragovich, Bertram Ostendorf, Ross A. Bradstock

Faculty of Science - Papers (Archive)

Land managers are required to assess a range of environmental attributes prior to and after prescribed burning. Current environmental assessments vary depending on the organisation involved and the existing information about localised soil erosion. Auditing successful environmental assessments requires ongoing field monitoring to evaluate whether the magnitude and extent of predicted post-fire impacts are comparable. The impacts of post-fire erosion were assessed by the authors using the techniques of water sampling, sediment traps, erosion pins, laser scanning, photogrammetry and visual field assessment. Each data collecting method varies in its spatial and temporal reach in terms of monitoring landscape changes in …

Revealing Indigenous Indonesian Traditional Medicine: Anti-Infective Agents, Paul A. Keller, Ari Satia Nugraha

Faculty of Science - Papers (Archive)

Indonesia is rich in medicinal plants which the population has used traditionally from generation to generation for curing diseases. Our interest in the treatment of infectious diseases has lead to the investigation of traditional Indonesian treatments. In this review, we present a comprehensive review of ethnopharmacologically directed screening in Indonesian medicinal plants to search for new anti-viral, antimalarial, anti-bacterial and anti-fungal agents. Some potent drug leads have been isolated from Indonesian medicinal plants. Further research is still required for the lead development as well as the search for new bioactive compounds from the enormous medicinal plant resources.

Isolation Of Linobiflavonoid, A Novel Biflavonoid From Linostoma Pauciflorum Griff, Tawesin Navarat, Stephen G. Pyne, Uma Prawat, Pittaya Tuntiwachwuttikul

Faculty of Science - Papers (Archive)

A novel biflavonoid, that we have named linobiflavonoid, and the known biscoumarin ether, daphnoretin, were isolated from the root extracts of Linostoma pauciflorum Griff. The structure of linobiflavonoid was determined from interpretation of its NMR spectroscopic data and from a comparison of this data with those of known biflavonoids and biflavones. The known flavones, 5,4'-dihydroxy- 7,3',5'-trimethoxyflavone and 5,4'-dihydroxy-7-methoxyflavone along with stigmasterol were isolated from the vines of the same plant. 4'-Dihydroxy-7,3'-5'-trimethoxyflavone was active against Mycobacterium tuberculosis (MIC 3.13 mu M) and KB-oral cavity cancer (IC₅₀ 17.41 mu M). (C) 2011 Phytochemical Society of Europe. Published by Elsevier B.V. All …