294 research outputs found
Redressing Ecological Poverty Through Participatory Democracy: Case Studies from India
No full textor the rural poor – who depend above all the land for their survival – a central development challenge is to sustain a base of natural capital that can support a robust local economy. In India, government mismanagement of forests, grazing lands, and water resources has often alienated rural people and exacerbated resource degradation. This paper shows the potential to reverse these trends when local people gain control over natural resources and manage them through systems of participatory democracy. Four case studies from semi-arid, hilly regions of India illustrate how democratic control of natural assets can lay the basis for ecological restoration and sustainable livelihoods.
Dishwashing detergents impact on Lemna minor L. biometric indicators
No full textHypothesis for this study – eco-labelled dish washing detergent could have lower adverse effect to biometrical indicators of common duckweed (Lemna minor L.). Dishwashing detergents consumption in Europe grows every year. In comparison 2016th with 2017th usage increased 1.4 percent (International Association for soaps, detergents and maintenance products). Toxicological assessment helps to evaluate detergents environmental impact. This research will give new data about dishwashing detergents components’ complex impact on living organisms. There is little data available, or no data, about research like this. Scientist generally explores one, two or three components of detergents. In this article the author analyses eco-labelled and not labelled dishwasher detergents and their impact on common duckweed (Lemna minor L.). Both detergents had a strong adverse effect to biometrical indicators of common duckweed. After three days both detergents at 0,6 ml/l and 1,2 ml/l concentrations caused oxidative stress of Lemna minor L. Obtained results showed linear regression between fronds amount and concentration value. More significant concentration caused more cignificant inhibition of growth and lower ideal exponential growth. Study demonstrated that eco-labelled dishwashing detergent had the more significant impact on fronds amount and fronds area. It reached 100 percent.Tyrimui suformuluota hipotezė – eko ženklu pažymėtas indų ploviklis gali turėti mažesnį neigiamą poveikį mažosios plūdenos (Lemna minor L.) biometriniams rodikliams. Indų ploviklių naudojimas Europoje didėja kiekvienais metais. Lyginant 2016 ir 2017 metus jis išaugo 1,4 % (Tarptautinė muilų, ploviklių ir priežiūros produktų asociacija). Toksikologiniai tyrimai padeda tinkamai įvertinti naujų ir jau sukurtų ploviklių poveikį aplinkai. Atliktas tyrimas suteiks naujų duomenų apie indų ploviklio, kaip cheminių medžiagų mišinio poveikį gyviesiems organizmams. Šiuo metu tokių tyrimų yra atlikta labai mažai, arba jų visai nėra, nes mokslininkai dažniausiai koncentruojasi tik ties viena ar keliomis sudedamosiomis ploviklio dalimis. Straipsnyje nagrinėjamas ekologiško ir neekologiško indų ploviklio poveikis mažajai plūdenai (Lemna minor L.). Atliktas 7 parų tyrimas parodė, kad abu plovikliai turėjo stiprų neigiamą poveikį mažosios plūdenos biometriniams rodikliams. Trečią tyrimo dieną 0,6 ml/l ir 1,2 ml/l koncentracijos ploviklių tirpalais veiktoms plūdenoms pasireiškė oksidacinis stresas. Nustatyta tiesinė priklausomybė tarp gniužulų skaičiaus ir ploviklio koncentracijos. Didėjant ploviklio koncentracijai, stiprėjo augimo slopinimas bei mažėjo vidutinis savitasis augimo greitis. Išanalizavus rezultatus pastebėta, kad labiausiai plūdenų gniužulų skaičiaus ir ploto augimą slopino ekologiškas indų ploviklis. Slopinimas siekė net iki 100 %.Vytauto Didžiojo universitetas / Vytautas Magnus UniversityŽemės ūkio akademija / Agriculture AcademyMiškų ir ekologijos fakultetas / Faculty of Forest Sciences and Ecolog
The species analyzed, their collectors/donors, collection locality and vial ID number.
No full text<p>Each vial contained workers from a single colony. The species are in alphabetical order. Abbreviations: WRT, the author; RAJ, Robert A. Johnson; JPP, James P. Pitts; JCT, James C. Trager; KLH, Kevin L. Haight; SDP, Sanford D. Porter.</p
Multinationals or cooperatives: does it matter to farmers? A case study of the Indian dairy sector.
No full textREVIEW ON ARGYREIA SPECIOSA (L. f.) SWEET. (VRDHHADARU): PLANT OF INDIAN MEDICAL LEXICONS
No full textArgyreia speciosa Sweet. is a popular Indian medicinal plant, which has long been used in traditional Ayurvedic Indian medicine for various diseases. It is commonly known as Vidhaara or Vrddhadaru. It is a large creeper and is covered with hair all over. Flowers are either pink or red or purple coloured. It is not mentioned in Samhitas, but described in the Nighantu granthas. Vrddhadaru is a controversial drug. It is mainly confused with Ipomaea petaloidea. In Nighantus it is described by name of Vrddhadaru. It is mainly described in Dhanvantri Nighnatu, Shodhal Nighantu, Abhidhan Ratnamala, Madanpal Nighantu, Raj Nighantu, Nighantu Adarsh and in Priya Nighantu. The Importance of Plant is well recognized by its presence in almost all Nighantus and by its therapeutic potential. Therapeutically prove action of Argyreia speciosa Sweet. Is in aphrodisiac, immunomodulatory, hepatoprotective, antioxidant, antiinflammatory, antihyperglycemic, antidiarrheal, antimicrobial, antiviral, antiulcer, anticonvulsant, analgesic and central nervous depressant activities. A wide range of phytochemical constituents have been isolated from this plant. Its seeds mainly contain eragine, isoeragine which has hallucinogenic properties. It is a comprehensive account of the Taxonomy, Synonyms, Vernacular names, Classical review, Properties, Controversy, Morphology, Microscopy of root, stem & leaf, Chemical constituents & their action, Indication, Part used, Dosage, Therapeutic usage, Formulations & Preparations and recent research findings which shows the importance of plant and help to gain knowledge about the plant
Energy Efficient Electric Vehicle Platooning At Signalized Intersections
No full textGrowth of mobility for people and goods transportation has been increasing steadily over the years. With the perpetual increase in number of road vehicles, comes the inevitable problems of traffic and pollution. Various intelligent traffic technologies and strategies have been proposed and implemented over the years to overcome the road traffic problems. Platooning is identified as one of the ways to tackle transportation related problems efficiently. Even though platooning has been tested and implemented in highways, not much attention has been given to controlling the platoons at urban roads. When vehicles in the platoon are connected and automated, it helps them to understand the environment better and communicate efficiently for better performance. Platoons at the vicinity of signalized intersections need to accelerate and decelerate in a nonlinear manner which leads to higher energy consumption and longer travel time. Most of the previous research approaches focused on optimizing only the energy consumption or travel time of the platoons. However, studies show that the recommended driving advice from the controllers is not tracked by the drivers completely. The current research focuses on optimal trajectory planning of the electric vehicle platoons at signalized intersections. This is done by designing an energy efficient longitudinal controller for the platoons using optimal control method. The goal of this thesis is split between planning and tracking the trajectory. Thus the optimal speed profile is planned by the high level controller (i.e the optimal controller) and tracked using a battery electric vehicle model controlled by a low level controller (i.e a PID controller). The performance of the controlled platoon was verified using different scenarios and was found to perform positively under respective control objectives and constraints. The designed controlled and automated platoon by the optimal controller was able to achieve energy consumption and cost saving up to 67% when compared with intelligent driver model (IDM) platoon for a specific scenario. This research is a collaboration between the Research Institute of Highways (RIOH) in China and Rijkswaterstaat, Ministry of Infrastructure and Water Management in The Netherlands, to overcome the common traffic problems on road. The research was carried out at the ITS-Edulab, a Dutch traffic and transport laboratory for students. It is a cooperation between Rijkswaterstaat and the Transport & Planning group of the Delft University of Technology. Mechanical Engineerin
MPC-based motion cueing algorithm for a 6 DOF driving simulator with actuator constraints
No full textDriving simulators are widely used for understanding Human-Machine Interaction, driver behavior and driver training. The effectiveness of such simulators in this process depends largely on their ability to generate realistic motion cues. Though the conventional filter-based motion cueing strategies have provided reasonable results, these methods result in poor workspace management. To address this issue, linear MPC-based strategies have been applied in the past. However, since the kinematics of the motion platform itself is non-linear and the required motion varies with the driving conditions, this approach tends to produce sub-optimal results. In this thesis, a nonlinear MPC-based algorithm is presented which incorporates the non-linear kinematics of the Stewart platform within the MPC algorithm to increase the effectiveness and utilize maximum workspace. Further, adaptive weights-based tuning is used to smoothen the movement of the platform near its physical limits. Full-track simulations were carried out and performance indicators were defined to objectively compare the response of the proposed algorithm with classical washout filter and linear MPC-based algorithms. The results indicate a better reference tracking with lower root mean square error and higher shape correlation for the proposed algorithm. Lastly, the effect of the adaptive weights based tuning was also observed in the form of smoother actuator movements and better workspace utilization
Ovarian Histomorphology and Gonadial Cycle of Freshwater Garfish <i>Xenentodon cancila</i> (Hemilton-Buchanan) (Beloniformes:Belonidae)
No full textThe histomorphology and gonadial cycle of a freshwater garfish Xenentoton cancila revealed that the ovaries of the fish pass through resting, early maturing advanced maturing, pre-spawning, spawning and spent phases within one year. The oogenetic activity starts in November and continues upto June(GSI=10.19)-July(GSI=11.38), when ovaries are full of yolky eggs. Only young oogonia and oocytes l appeared in September to October. The oocytes of l,ll,lll,lV and V stages were present during November to February. The oocytes Vl and Vll were seen dominated by ripe oocytes during June to late July when spawning takes place. Asychronism mode of oocyte development was recorded in X.cancila.
Keywords: Xenentodon cancila; oocyte development; reproductive cycle; spawning
DOI: http://dx.doi.org/10.3126/bibechana.v8i0.5694
BIBECHANA 8 (2012) 96-10
- …
