Needs and perspectives of odour research in the aquatic sciences

2007 ◽  
Vol 55 (5) ◽  
pp. 367-369
Author(s):  
F. Jüttner
Keyword(s):  
Secondary Metabolites ◽  
Food Web ◽  
Molecular Mechanisms ◽  
Temporal Distribution ◽  
Regulatory Mechanisms ◽  
Future Research ◽  
Spatial And Temporal Distribution ◽  
The Common ◽  
Aquatic Sciences

Over more than four decades odour research in the aquatic sciences has increasingly focused on cyanobacteria and the common odour-causing compounds, geosmin and 2-methylisoborneol. Success in future research requires a long-term perspective. Key areas for investigation are secondary metabolites and cyanobacteria, regulatory mechanisms for geosmin and other compounds' synthesis; understanding their spatial and temporal distribution (particularly relating to the food web in a habitat); and molecular mechanisms for liberation of geosmin by microorganisms.

Spatial and temporal distribution of long-term short-wave surface radiation over Greece

2006 ◽  
Vol 132 (621) ◽  
pp. 2693-2718 ◽  
Author(s):  
A. Fotiadi ◽  
N. Hatzianastassiou ◽  
P. W. Stackhouse ◽  
C. Matsoukas ◽  
E. Drakakis ◽  
...  
Keyword(s):  
Temporal Distribution ◽  
Short Wave ◽  
Surface Radiation ◽  
Spatial And Temporal Distribution ◽  
Wave Surface

scholarly journals Long-term patterns of spatial and temporal distribution in the seabob shrimp Xiphopenaeus kroyeri (Decapoda: Penaeidae) population in southeastern Brazil

2014 ◽  
Vol 34 (3) ◽  
pp. 326-333 ◽  
Author(s):  
Gisele Salgado Heckler ◽  
Roberto Munehisa Shimizu ◽  
Adilson Fransozo ◽  
Sergio Rosso ◽  
Rogerio Caetano da Costa
Keyword(s):  
Temporal Distribution ◽  
Southeastern Brazil ◽  
Spatial And Temporal Distribution ◽  
Xiphopenaeus Kroyeri

scholarly journals Towards a database on societal impact of Mediterranean floods within the framework of the HYMEX project

2013 ◽  
Vol 13 (5) ◽  
pp. 1337-1350 ◽  
Author(s):  
M. C. Llasat ◽  
M. Llasat-Botija ◽  
O. Petrucci ◽  
A. A. Pasqua ◽  
J. Rosselló ◽  
...  
Keyword(s):  
Mediterranean Region ◽  
Heavy Rainfall ◽  
Temporal Distribution ◽  
Balearic Islands ◽  
Societal Impact ◽  
Spatial And Temporal Distribution ◽  
Flood Events ◽  
Database Structure ◽  
Nw Mediterranean ◽  
The Common

Abstract. The NW Mediterranean region experiences every year heavy rainfall and flash floods that occasionally produce catastrophic damages. Less frequent are floods that affect large regions. Although a large number of databases devoted exclusively to floods or considering all kind of natural hazards do exist, usually they only record catastrophic flood events. This paper deals with the new flood database that is being developed within the framework of HYMEX project. Results are focused on four regions representative of the NW sector of Mediterranean Europe: Catalonia, Spain; the Balearic Islands, Spain; Calabria, Italy; and Languedoc-Roussillon, Midi-Pyrénées and PACA, France. The common available 30-yr period starts in 1981 and ends in 2010. The paper shows the database structure and criteria, the comparison with other flood databases, some statistics on spatial and temporal distribution, and an identification of the most important events. The paper also provides a table that includes the date and affected region of all the catastrophic events identified in the regions of study, in order to make this information available for all audiences.

scholarly journals COVID-19 and Post-Acute COVID-19 Syndrome: From Pathophysiology to Novel Translational Applications

Biomedicines ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 47
Author(s):  
Pasquale Ambrosino ◽  
Anna Lanzillo ◽  
Mauro Maniscalco
Keyword(s):  
Intensive Care Unit ◽  
Intensive Care ◽  
Clinical Practice ◽  
Molecular Mechanisms ◽  
Future Research ◽  
Special Issue ◽  
Lung Abnormalities ◽  
Insight Into ◽  
Rehabilitation Strategies

The new severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was responsible for a global emergency, with the declaration of a pandemic in March 2020. SARS-CoV-2 can determine coronavirus disease 2019 (COVID-19), ranging from a mild illness to a serious condition requiring hospitalization in an intensive care unit. Furthermore, reports of persistent lung abnormalities and residual disability after a negative swab test suggest the presence of a post-acute COVID-19 syndrome, with the need for multidisciplinary rehabilitation strategies in the majority of survivors. However, the pathophysiological mechanisms of the acute and post-acute manifestations of COVID-19 have not been fully elucidated. In this Special Issue, a number of review and original articles provided a stimulating insight into the pathophysiology and diagnostics of COVID-19 and post-acute COVID-19 syndrome. Moreover, some novel prognostic and therapeutic applications were analyzed, with potential repercussions in clinical practice and future research. The need for further laboratory and translational research seems to emerge from this collection of articles, with the aim of elucidating the molecular mechanisms of COVID-19 at different stages of the disease. This could enable personalized prevention, interventional and rehabilitation strategies aimed at reducing disease progression and long-term disability.

scholarly journals Long Term Trends of Hydrology, Sediment Yield and Crop Productivity in Andit Tid Watershed Central Highlands of Ethiopia

2020 ◽  
Author(s):  
Ayele Desalegn ◽  
Tilahun Getachew ◽  
Temesgen Yilma ◽  
Tilashwork Chanie
Keyword(s):  
Trend Analysis ◽  
Sediment Yield ◽  
Water Conservation ◽  
Crop Production ◽  
Temporal Distribution ◽  
Sediment Concentration ◽  
Spatial And Temporal Distribution ◽  
Sediment Loss ◽  
Long Term Trends

Abstract Background: Previously in Ethiopia reliable climatic and hydro-meteorological data are not available and not maintained properly but the long-term database is needed for the assessment and planning of resource dynamics. To minimize the lack of reliable database, the Soil Conservation Research Program (SCRP) established observatory model watersheds since 1981. Andit tid watershed is one of these watersheds established for monitoring the long term trends of climatic, hydrologic, sediment loss and crop production system as a representative site for central high land parts of Ethiopia at 1982. This research paper compiles the analysis of spatial and temporal distribution of the rain fall; trends of run off and sediment loss and their relation and the influence of position of terraces on crop production. Result: From the rainfall trend analysis result the rainfall of the watershed has insignificant spatial (PCI=1.07) and temporal (CV=16.7%) variation. The precipitation coefficient (%) value of the watershed indicates that July and August have big rain with high concentration; September have big rain with moderate concentration and these three months could contribute more than one twelfth of total rainfall amount. The highest runoff and sediment yield were observed in August and July, while sediment concentration was generally high in June. All crops delivered statistically highest yield (P<0.05) immediately above bunds (zone a). Conclusion: The rainfall spatial and temporal distribution trend analysis results conclude that the watershed is not vulnerable for future drought. The highest sediment concentration occurred in June was because of the reason that the lands are plowed and prepared for crop growth; following this small rainfall can carry much soil and can contribute for high suspended sediment concentration. The highest grain yield obtained from above bunds is because of the trapped and accumulated soil and plant nutrient could contribute for better performance and production of crops. To obtain better crop yield; to minimize sediment loss and improve the stream flow it is better to maintain the existed soil and water conservation structures and apply the new interventions.

scholarly journals Spatial and temporal distribution of foot and mouth disease outbreaks in Amhara region of Ethiopia in the period 1999 to 2016

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Endris Aman ◽  
Wassie Molla ◽  
Zeleke Gebreegizabher ◽  
Wudu Temesgen Jemberu
Keyword(s):  
Temporal Distribution ◽  
Foot And Mouth Disease ◽  
Dry Season ◽  
Mouth Disease ◽  
Spatial And Temporal Distribution ◽  
Amhara Region ◽  
Term Trend ◽  
Foot And Mouth ◽  
Long Term Trend

Abstract Background Foot and mouth disease (FMD) is an economically important trans-boundary viral disease of cloven-hoofed animals. It is caused by FMD virus, which belongs to the genus Aphthovirus and family Picornaviridae. FMD is a well-established endemic disease in Ethiopia since it was first detected in 1957. This retrospective study was carried out to identify the spatial and temporal distribution of FMD outbreaks in Amhara region of Ethiopia using 18 years (January 1999–December 2016) reported outbreak data. Results A total of 636 FMD outbreaks were reported in Amhara region of Ethiopia between 1999 and 2016 with an average and median of 35 and 13 outbreaks per year respectively. In this period, FMD was reported at least once in 58.5% of the districts (n = 79) and in all administrative zones of the region (n = 10). The average district level incidence of FMD outbreaks was 4.68 per 18 years (0.26 per district year). It recurs in a district as epidemic, on average in 5.86 years period. The incidence differed between administrative zones, being the lowest in East Gojjam and highest in North Shewa. The occurrence of FMD outbreaks was found to be seasonal with peak outbreaks in March and a low in August. The long-term trend of FMD outbreaks indicates a slight, but statistically significant (p < 0.001) decrease over the study period. Conclusion FMD occurred in all zones of the region and showed statistically significant decrease in the long-term trend. Numbers of outbreaks were relatively higher during dry season. The spatial and temporal distribution identified in this study should be considered in controlling the disease. As unregulated and frequent animal movements are the likely causes of high outbreak occurrence during the dry season, animal movement regulations should be considered for the long-term control of FMD.

scholarly journals Transcriptomic analyses reveal putative genes associated with bibenzyl biosynthesis in the traditional Chinese herb Dendrobium officinale

2019 ◽  
Author(s):  
Oluwaniyi Isaiah Adejobi ◽  
Ju Guan ◽  
Liu Yang ◽  
Jiang-Miao Hu ◽  
Anmin Yu ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Differentially Expressed Genes ◽  
Molecular Mechanisms ◽  
Chinese Herb ◽  
Differentially Expressed ◽  
Experimental Result ◽  
Dendrobium Officinale ◽  
Future Research ◽  
Traditional Chinese Herbal Medicine ◽  
Root Tissues

Abstract Background: Dendrobium plants are well known for their uses in traditional Chinese herbal medicine. Bibenzyl compounds are the main active compounds in Dendrobium officinale. However, the physiological and molecular basis for the biosynthesis of bibenzyl compounds in Dendrobium plants remains underexplored. Results: In this study, the accumulation of erianin and gigantol were studied as representative compounds of bibenzyl. Their presence in plant tissues were investigated. Our results show that root tissues contained the highest content of bibenzyl (erianin and gigantol). Based on the pre-experimental result that exogenous application of Methyl-Jasmonate promotes the biosynthesis of bibenzyl compounds in D. officinale root tissues, comparative transcriptomic analyses were conducted between the bibenzyl-accumulated root tissues and a control. In total, we identified 1,342 differentially expressed genes (DEGs) with 912 up-regulated and 430 down-regulated genes. Most of the identified DEGs are functionally involved in the JA signaling pathway and the biosynthesis of secondary metabolites. In particular, we identified 11 enzymatic genes functionally involved in bibenzyl biosynthesis.Conclusions: Our study provide insights on the identification of putative genes associated with bibenzyl biosynthesis and accumulation in Dendrobium plants, and also paves the way for future research on dissecting the physiological and molecular mechanisms of bibenzyl synthesis in plants as well as on how to best utilize genetic engineering and molecular modification techniques to genetically improve Dendrobium varieties by increasing the content of bibenzyl for drug production and industrialization. Keywords: Bibenzyl, D. officinale , Differentially expressed genes, Secondary metabolites, Transcriptome analysis.

scholarly journals Leader of the SAC: molecular mechanisms of Mps1/TTK regulation in mitosis

Open Biology ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 180109 ◽  
Author(s):  
Spyridon T. Pachis ◽  
Geert J. P. L. Kops
Keyword(s):  
Chromosome Segregation ◽  
Molecular Mechanisms ◽  
Spindle Pole Body ◽  
Temporal Distribution ◽  
Spindle Pole ◽  
Future Research ◽  
Pharmaceutical Companies ◽  
Cellular Processes ◽  
Monopolar Spindle ◽  
Spatio Temporal

Discovered in 1991 in a screen for genes involved in spindle pole body duplication, the monopolar spindle 1 (Mps1) kinase has since claimed a central role in processes that ensure error-free chromosome segregation. As a result, Mps1 kinase activity has become an attractive candidate for pharmaceutical companies in the search for compounds that target essential cellular processes to eliminate, for example, tumour cells or pathogens. Research in recent decades has offered many insights into the molecular function of Mps1 and its regulation. In this review, we integrate the latest knowledge regarding the regulation of Mps1 activity and its spatio-temporal distribution, highlight gaps in our understanding of these processes and propose future research avenues to address them.

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