Specific systematic studies on the nuclear potential parameter for the heavy-ion reactions which includes the systems have been achieved by using large-angle quasi elastic scattering at deep sub-barrier energies close to the Coulomb barrier height. The elastic scattering barrier distribution Dqelas a function of energy has also been calculated in this theoretical study. The single-channel (SC) and coupled-channels calculations have been carried out to elicit the nuclear potential. The chi-square method X2 has been used find the best value of the nuclear potential in comparison with the experimental data. The best values of the nuclear potential were found from the calculations of the single channels for systems: 16O+166ER , 16O+197Au, which are equal to (60.5, 100) MeV, respectively.
{"title":"A study the 16 O + 166 E R , 16 O + 197 Au Systems Using Calculations of Quasi-elastic Scattering","authors":"Ali A. Rakhees, K. S. Jassim","doi":"10.62227/as/74110","DOIUrl":"https://doi.org/10.62227/as/74110","url":null,"abstract":"Specific systematic studies on the nuclear potential parameter for the heavy-ion reactions which includes the systems have been achieved by using large-angle quasi elastic scattering at deep sub-barrier energies close to the Coulomb barrier height. The elastic scattering barrier distribution Dqelas a function of energy has also been calculated in this theoretical study. The single-channel (SC) and coupled-channels calculations have been carried out to elicit the nuclear potential. The chi-square method X2 has been used find the best value of the nuclear potential in comparison with the experimental data. The best values of the nuclear potential were found from the calculations of the single channels for systems: 16O+166ER , 16O+197Au, which are equal to (60.5, 100) MeV, respectively.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study is to improve the assessment accuracy and control efficiency of building power quality by adopting online monitoring and integrating multiple technical indicators and control methods. A whole set of power quality technical index system is developed in the study, involving voltage deviation, harmonic voltage/current limit, and so on. The power quality indicators are quantitatively evaluated through standardization and weight determination. The assessment results show that the measured power quality indicators vary within the interval of 0 to 9, which verifies the effectiveness of the assessment system. In terms of control technology, this paper discusses in depth the static reactive power compensation (SVC) device and its role in improving building power quality, and confirms its efficacy in optimizing power quality through simulation experiments. This work not only successfully evaluates the building power quality, but also proposes practical control strategies, which provide theoretical and practical guidance for the stable operation of power systems and the further improvement of power quality.
{"title":"Research on Building Power Quality Assessment and Control Technology Based on Online Monitoring","authors":"Gaohua Man","doi":"10.62227/as/74118","DOIUrl":"https://doi.org/10.62227/as/74118","url":null,"abstract":"This study is to improve the assessment accuracy and control efficiency of building power quality by adopting online monitoring and integrating multiple technical indicators and control methods. A whole set of power quality technical index system is developed in the study, involving voltage deviation, harmonic voltage/current limit, and so on. The power quality indicators are quantitatively evaluated through standardization and weight determination. The assessment results show that the measured power quality indicators vary within the interval of 0 to 9, which verifies the effectiveness of the assessment system. In terms of control technology, this paper discusses in depth the static reactive power compensation (SVC) device and its role in improving building power quality, and confirms its efficacy in optimizing power quality through simulation experiments. This work not only successfully evaluates the building power quality, but also proposes practical control strategies, which provide theoretical and practical guidance for the stable operation of power systems and the further improvement of power quality.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"56 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Realize the role of regular testing and assessment in the training process. Create “pressure” intentionally and ensure scientific aspact so that students can improve their sense of responsibility in learning, form the habit and need to regularly self-study with high quality and efficiency throughout the education process, contributing to improving the effectiveness of educating students majoring in physical education at Hong Duc University – Vietnam [8]. Testing and assessment aim to improve the effectiveness of lecturers’ teaching by providing lecturers with data that can diagnose skill deficiencies, measure mastery of selected intended learning objectives, and appropriate teaching and learning methods [7].
{"title":"Solutions to Improve Activeness of Students in Learning Process of Students Majoring in Physical Education at Hong Duc University in Vietnam Through Regular Testing and Assessment of Learning Outcomes","authors":"Dong Huong Lan","doi":"10.62227/as/74107","DOIUrl":"https://doi.org/10.62227/as/74107","url":null,"abstract":"Realize the role of regular testing and assessment in the training process. Create “pressure” intentionally and ensure scientific aspact so that students can improve their sense of responsibility in learning, form the habit and need to regularly self-study with high quality and efficiency throughout the education process, contributing to improving the effectiveness of educating students majoring in physical education at Hong Duc University – Vietnam [8]. Testing and assessment aim to improve the effectiveness of lecturers’ teaching by providing lecturers with data that can diagnose skill deficiencies, measure mastery of selected intended learning objectives, and appropriate teaching and learning methods [7].","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
With the rapid development of e-commerce industry, the efficiency of logistics and distribution has become a key constraint to its further development. In this paper, we explore the optimization of e-commerce logistics and distribution paths through the ant colony algorithm, aiming to improve the distribution efficiency and reduce the cost. The study firstly analyzes the core elements and challenges of e-commerce logistics and distribution paths, and then describes in details about the ant colony algorithm and its application to path optimization. By constructing a model adapted to the characteristics of e-commerce distribution, we use the ant colony algorithm to optimize a variety of different sizes and complexities of distribution paths. By constructing a model adapted to the characteristics of e-commerce distribution, we use the ant colony algorithm to optimize a variety of distribution paths with different sizes and complexities, and the experimental results show that the algorithm can effectively reduce the total distribution distance and cost. In the test cases, we observe that the distribution paths are shortened by 15% on average, and the distribution cost is reduced by about 20%. These results prove the effectiveness and feasibility of the ant colony algorithm in the optimization of e-commerce logistics distribution paths. This study provides a new idea for e-commerce logistics distribution path optimization, which is of great significance for improving logistics efficiency and reducing operation cost.
{"title":"Research on E-commerce Logistics Distribution Path Optimization Based on Ant Colony Algorithm","authors":"Shouwei Hou","doi":"10.62227/as/74117","DOIUrl":"https://doi.org/10.62227/as/74117","url":null,"abstract":"With the rapid development of e-commerce industry, the efficiency of logistics and distribution has become a key constraint to its further development. In this paper, we explore the optimization of e-commerce logistics and distribution paths through the ant colony algorithm, aiming to improve the distribution efficiency and reduce the cost. The study firstly analyzes the core elements and challenges of e-commerce logistics and distribution paths, and then describes in details about the ant colony algorithm and its application to path optimization. By constructing a model adapted to the characteristics of e-commerce distribution, we use the ant colony algorithm to optimize a variety of different sizes and complexities of distribution paths. By constructing a model adapted to the characteristics of e-commerce distribution, we use the ant colony algorithm to optimize a variety of distribution paths with different sizes and complexities, and the experimental results show that the algorithm can effectively reduce the total distribution distance and cost. In the test cases, we observe that the distribution paths are shortened by 15% on average, and the distribution cost is reduced by about 20%. These results prove the effectiveness and feasibility of the ant colony algorithm in the optimization of e-commerce logistics distribution paths. This study provides a new idea for e-commerce logistics distribution path optimization, which is of great significance for improving logistics efficiency and reducing operation cost.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"57 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article critically examines Charles Bonnet’s seminal contributions to experimental science, particularly through his influential work, ‘Research on the Use of Leaves.’ The primary objective is to delineate the functions and forms of natural experimentation as they were understood and practiced in the mid-18th century. During this period, scientists esteemed experimentation as the zenith of scientific proof, acutely cognizant of its multifaceted functional and typological aspects. Their methodology was characterized by a detailed narration of research methodologies, fostering a ‘rhetoric of transparency’ in scientific discourse. Nevertheless, the advent of new norms in scientific discourse during the 19th century, coupled with a paradigmatic philosophical shift in the 20th century, resulted in the marginalization of empirical practices of the Enlightenment era. Contemporary historians are now endeavoring to reconcile significant terminological discrepancies and to recontextualize the divergent methodologies among natural historians of that epoch. This involves a critical distinction between exploratory and demonstrative (or discriminant) forms of experimentation. Bonnet’s systematic preference for discriminant experimentation serves as a quintessential example of the logical approach in natural history. However, this perspective does not wholly represent the 18th-century ‘art of observation,’ which embraced a plethora of methodologies including taxonomy, anatomical dissection, chemical analysis, and physical measurements.
{"title":"The Relationship Between a Green, Low-carbon and Recycling Economy, Economic Policy and Industrial Structure Development","authors":"Qing Guo","doi":"10.62227/as/74101","DOIUrl":"https://doi.org/10.62227/as/74101","url":null,"abstract":"This article critically examines Charles Bonnet’s seminal contributions to experimental science, particularly through his influential work, ‘Research on the Use of Leaves.’ The primary objective is to delineate the functions and forms of natural experimentation as they were understood and practiced in the mid-18th century. During this period, scientists esteemed experimentation as the zenith of scientific proof, acutely cognizant of its multifaceted functional and typological aspects. Their methodology was characterized by a detailed narration of research methodologies, fostering a ‘rhetoric of transparency’ in scientific discourse. Nevertheless, the advent of new norms in scientific discourse during the 19th century, coupled with a paradigmatic philosophical shift in the 20th century, resulted in the marginalization of empirical practices of the Enlightenment era. Contemporary historians are now endeavoring to reconcile significant terminological discrepancies and to recontextualize the divergent methodologies among natural historians of that epoch. This involves a critical distinction between exploratory and demonstrative (or discriminant) forms of experimentation. Bonnet’s systematic preference for discriminant experimentation serves as a quintessential example of the logical approach in natural history. However, this perspective does not wholly represent the 18th-century ‘art of observation,’ which embraced a plethora of methodologies including taxonomy, anatomical dissection, chemical analysis, and physical measurements.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"55 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140255095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The purpose of this study is to explore and optimize natural lighting schemes for college gymnasiums through dynamic light environment simulation. The study used Daysim software, combined with Rhino & Grasshopper for modeling and parameter optimization, to evaluate different lighting schemes through a multi-objective optimization approach. The results show that the effective indoor illuminance of the top lighting scheme at DA300lx, UDI100-2000lx, aDGP(0.4), DA580lx, and UDI300-890lx are 91.50%, 88.44%, 90.58%, 92.56%, and 52.89%, respectively, which show good lighting effects. The side lighting scheme also shows excellent lighting performance in different configurations. In addition, the side + top synergistic light harvesting scheme achieved efficient light environment utilization while ensuring visual comfort. This study suggests that the top and side synergistic lighting scheme can effectively enhance the natural lighting effect of the gymnasium. This study provides a scientific basis for the lighting design of college gymnasiums and is of great significance in guiding the actual engineering design.
{"title":"Research on Lighting Schemes for College Gymnasiums Based on Dynamic Light Environment Simulation","authors":"Shouyi Wang","doi":"10.62227/as/74102","DOIUrl":"https://doi.org/10.62227/as/74102","url":null,"abstract":"The purpose of this study is to explore and optimize natural lighting schemes for college gymnasiums through dynamic light environment simulation. The study used Daysim software, combined with Rhino & Grasshopper for modeling and parameter optimization, to evaluate different lighting schemes through a multi-objective optimization approach. The results show that the effective indoor illuminance of the top lighting scheme at DA300lx, UDI100-2000lx, aDGP(0.4), DA580lx, and UDI300-890lx are 91.50%, 88.44%, 90.58%, 92.56%, and 52.89%, respectively, which show good lighting effects. The side lighting scheme also shows excellent lighting performance in different configurations. In addition, the side + top synergistic light harvesting scheme achieved efficient light environment utilization while ensuring visual comfort. This study suggests that the top and side synergistic lighting scheme can effectively enhance the natural lighting effect of the gymnasium. This study provides a scientific basis for the lighting design of college gymnasiums and is of great significance in guiding the actual engineering design.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"75 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140254649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Use of oligochaete communities for the assessment of the biological quality and the functioning of watercourses : a review of data from the Geneva area (Switzerland). – Oligochaetes are used in some cantons in Switzerland to assess the biological quality of watercourse and lake sediments. The oligochaete index of sediment bioindication (IOBS) allows to assess the quality of fine/sandy sediments of watercourses, while the Functional traits method (TRF) is dedicated to assess the quality of surficial coarse sediments and of the hyporheic zone. The TRF method also allows to know the dynamics of hydrological exchanges between surface water and groundwater. In the Geneva area, the IOBS index was applied in routine from 2008 to 2013 (92 samples) and the TRF method was tested in 2012 and 2013. The IOBS index proved to be a good bioindicator of chemical quality of the sediments. Metal toxicity thresholds in sediments were established and proposed. The implementation of the IOBS index in complement to the Swiss Biotic Index (IBCH) allowed to refine the ecological diagnostics. The TRF approach proved to be of great interest to simultaneously assess the biological quality of coarse habitats and of the vertical hydrological exchanges. The IOBS and TRF methods should be more integrated in the monitoring programs of watercourse quality. The current development of methods based on the identification of oligochaetes using genetic barcodes could allow to overcome the problems related to the morphological identification of species and a wider use of oligochaetes as bioindicators.
{"title":"Utilisation des communautés d’oligochètes pour l’évaluation de la qualité biologique et du fonctionnement des cours d’eau : un bilan à partir de données genevoises (Suisse)","authors":"R. Vivien, M. Lafont, B. Ferrari","doi":"10.5169/SEALS-738370","DOIUrl":"https://doi.org/10.5169/SEALS-738370","url":null,"abstract":"Use of oligochaete communities for the assessment of the biological quality and the functioning of watercourses : a review of data from the Geneva area (Switzerland). – Oligochaetes are used in some cantons in Switzerland to assess the biological quality of watercourse and lake sediments. The oligochaete index of sediment bioindication (IOBS) allows to assess the quality of fine/sandy sediments of watercourses, while the Functional traits method (TRF) is dedicated to assess the quality of surficial coarse sediments and of the hyporheic zone. The TRF method also allows to know the dynamics of hydrological exchanges between surface water and groundwater. In the Geneva area, the IOBS index was applied in routine from 2008 to 2013 (92 samples) and the TRF method was tested in 2012 and 2013. The IOBS index proved to be a good bioindicator of chemical quality of the sediments. Metal toxicity thresholds in sediments were established and proposed. The implementation of the IOBS index in complement to the Swiss Biotic Index (IBCH) allowed to refine the ecological diagnostics. The TRF approach proved to be of great interest to simultaneously assess the biological quality of coarse habitats and of the vertical hydrological exchanges. The IOBS and TRF methods should be more integrated in the monitoring programs of watercourse quality. The current development of methods based on the identification of oligochaetes using genetic barcodes could allow to overcome the problems related to the morphological identification of species and a wider use of oligochaetes as bioindicators.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"66 1","pages":"105-116"},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83874259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Girardclos, M. Hilbe, J. Corella, J. Loizeau, K. Kremer, T. DelSontro, A. Arantegui, A. Moscariello, Frédéric Arlaud, Y. Akhtman, F. Anselmetti, U. Lemmin
In the late 19th century, F.-A. Forel led investigations of the Rhone River delta area of Lake Geneva that resulted in the discovery of a textbook example of a river-fed delta system containing impressive subaquatic channels. Well ahead of the marine counterparts, scientific observations and interpretations of water currents shaping the delta edifice for the first time documented how underflow currents carry cold, suspension-laden waters from the river mouth all the way to the deep basin. These early investigations of the Rhone delta laid the basis for follow-up studies in the 20th and 21th centuries. Sediment coring, water-column measurements, manned submersible diving, seismic reflection profiling and bathymetric surveying eventually provided a rich database to unravel the key erosional and depositional processes, further documenting the impact of human-induced changes in the catchment. With the merging of old and new scientific knowledge, today a comprehensive understanding prevails of how a delta changes through time, how its channels are formed, and what potential natural hazards may be related to its evolution. New and efficient bathymetric techniques, paired with novel coring operations, provided a time-series of morphologic evolution showing and quantifying the high dynamics of the delta/channel evolution in an unprecedented temporal and spatial resolution. Future investigations will continue to further quantify these dynamic processes and to link the evolution of the subaquatic domain with changes and processes in the catchment and with natural hazards. Its size, easy access, and large variety of states and processes will continue to make the Rhone delta area a perfect ‘laboratory’ in which general processes can be studied that could be upscaled or downscaled to other marine and lacustrine deltas
{"title":"Searching the Rhone delta channel in Lake Geneva since François Alphonse FOREL","authors":"S. Girardclos, M. Hilbe, J. Corella, J. Loizeau, K. Kremer, T. DelSontro, A. Arantegui, A. Moscariello, Frédéric Arlaud, Y. Akhtman, F. Anselmetti, U. Lemmin","doi":"10.7892/BORIS.45630","DOIUrl":"https://doi.org/10.7892/BORIS.45630","url":null,"abstract":"In the late 19th century, F.-A. Forel led investigations of the Rhone River delta area of Lake Geneva that resulted in the discovery of a textbook example of a river-fed delta system containing impressive subaquatic channels. Well ahead of the marine counterparts, scientific observations and interpretations of water currents shaping the delta edifice for the first time documented how underflow currents carry cold, suspension-laden waters from the river mouth all the way to the deep basin. These early investigations of the Rhone delta laid the basis for follow-up studies in the 20th and 21th centuries. Sediment coring, water-column measurements, manned submersible diving, seismic reflection profiling and bathymetric surveying eventually provided a rich database to unravel the key erosional and depositional processes, further documenting the impact of human-induced changes in the catchment. With the merging of old and new scientific knowledge, today a comprehensive understanding prevails of how a delta changes through time, how its channels are formed, and what potential natural hazards may be related to its evolution. New and efficient bathymetric techniques, paired with novel coring operations, provided a time-series of morphologic evolution showing and quantifying the high dynamics of the delta/channel evolution in an unprecedented temporal and spatial resolution. Future investigations will continue to further quantify these dynamic processes and to link the evolution of the subaquatic domain with changes and processes in the catchment and with natural hazards. Its size, easy access, and large variety of states and processes will continue to make the Rhone delta area a perfect ‘laboratory’ in which general processes can be studied that could be upscaled or downscaled to other marine and lacustrine deltas","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"31 1","pages":"103-118"},"PeriodicalIF":0.0,"publicationDate":"2012-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72503580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nicola Indermuehle, B. Oertli, Nathalie Menetrey Perrottet, L. Sager
L'objectif de cet article est de presenter une vue d'ensemble des methodes potentiellement utilisables pour l'evaluation de la biodiversite des etangs. Une recherche bibliographique a ete realisee afin d'estimer le nombre de publications et, par consequent, l'interet porte aux objectifs poursuivis par les differentes methodes d'evaluation, tels que la qualite de l'eau, les fonctions hydrologiques et la biodiversite, et a l'evaluation de la biodiversite de quatre types de milieux aquatiques (etangs, zones humides, eaux courantes, lacs). Des rapports d'etudes provenant d'agences environnementales et d'instituts de recherche (litterature grise) ont egalement ete pris en consideration. Nous nous sommes interesses autant aux methodes destinees a la recherche fondamentale qu'a celles destinees aux gestionnaires des sites. Les resultats montrent, que des methodes consacrees a l'evaluation routiniere de la qualite biologique ont ete principalement developpees pour les eaux courantes, et que les eaux stagnantes n'ont pas beneficie d'autant d'interet. Plus particulierement les mares et etangs ont ete largement ignores, en depit de leur contribution significative a la biodiversite regionale. Les methodes d'evaluation s'interessent principalement a la qualite de l'eau et aux aspects hydrologiques; a l'inverse elles se preoccupent moins de la biodiversite.
{"title":"An overview of methods potentially suitable for pond biodiversity assessment","authors":"Nicola Indermuehle, B. Oertli, Nathalie Menetrey Perrottet, L. Sager","doi":"10.5169/SEALS-738444","DOIUrl":"https://doi.org/10.5169/SEALS-738444","url":null,"abstract":"L'objectif de cet article est de presenter une vue d'ensemble des methodes potentiellement utilisables pour l'evaluation de la biodiversite des etangs. Une recherche bibliographique a ete realisee afin d'estimer le nombre de publications et, par consequent, l'interet porte aux objectifs poursuivis par les differentes methodes d'evaluation, tels que la qualite de l'eau, les fonctions hydrologiques et la biodiversite, et a l'evaluation de la biodiversite de quatre types de milieux aquatiques (etangs, zones humides, eaux courantes, lacs). Des rapports d'etudes provenant d'agences environnementales et d'instituts de recherche (litterature grise) ont egalement ete pris en consideration. Nous nous sommes interesses autant aux methodes destinees a la recherche fondamentale qu'a celles destinees aux gestionnaires des sites. Les resultats montrent, que des methodes consacrees a l'evaluation routiniere de la qualite biologique ont ete principalement developpees pour les eaux courantes, et que les eaux stagnantes n'ont pas beneficie d'autant d'interet. Plus particulierement les mares et etangs ont ete largement ignores, en depit de leur contribution significative a la biodiversite regionale. Les methodes d'evaluation s'interessent principalement a la qualite de l'eau et aux aspects hydrologiques; a l'inverse elles se preoccupent moins de la biodiversite.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"46 1","pages":"131-139"},"PeriodicalIF":0.0,"publicationDate":"2004-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74994887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hypochromy of the UV spectra measured in slightly alkaline, aqueous mixtures of nucleobases and tripolyphosphate and its reversal by acidification have grounded evidence for their dehydrating, phosphoramidic condensation into acid-labile bimolecular base-pyrophosphate monomeric units of polybasephosphates, plausibly considered as riboseless prenucleic polymers of prebiotic evolution.
{"title":"Spectral evidence for phosphoramide bondings between nucleobases and tripolyphosphate: possibly generative of prenucleic polybasephosphate chains","authors":"G. Turian, Isabelle Schoenenberger-Sola","doi":"10.5169/SEALS-740277","DOIUrl":"https://doi.org/10.5169/SEALS-740277","url":null,"abstract":"Hypochromy of the UV spectra measured in slightly alkaline, aqueous mixtures of nucleobases and tripolyphosphate and its reversal by acidification have grounded evidence for their dehydrating, phosphoramidic condensation into acid-labile bimolecular base-pyrophosphate monomeric units of polybasephosphates, plausibly considered as riboseless prenucleic polymers of prebiotic evolution.","PeriodicalId":55478,"journal":{"name":"Archives Des Sciences","volume":"34 1","pages":"145-152"},"PeriodicalIF":0.0,"publicationDate":"1997-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73644895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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