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Spatio-temporal variation and relationship between agricultural efficiency and irrigation intensity in a semi-arid region of India

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Regional Sustainability 2024年第2期5卷 123-139页

作者： Shibu DAS Kaushal Kumar SHARMA suranjan MAJUMDER Debabrata DAS Indrajit Roy CHOWDHURY Centre for the Study of Regional Development School of Social SciencesJawaharlal Nehru UniversityNew Delhi110067India Department of Geography&Applied Geography University of North BengalDarjeeling734013India Geography Department of Krishnagar Government College Krishnagar741101India

A surging population in Karnataka State,a semi-arid region in India,poses a threat to both food security and livelihood sustainability,necessitating a concentrated effort to bolster agricultural efficiency and achieve United Naton’s Sustainable Development Goal 2(zero hunger).Therefore,in order to address the pressing issue of food scarcity in Karnataka,this study meticulously examined the spatio-temporal variation of agricultural efficiency and irrigation intensity in Karnataka,uncovering its significant dependence of agricultural efficiency on irrigation ***,this study used a one-way analysis of variance(ANOVA)to ascertain significant differences in the means of agricultural efficiency and irrigation intensity during 2004-2005 and *** study showed that the maximum improvement in agricultural efficiency index was recorded in Belgaum(40.24),Gulbarga(24.77),and Yadgir districts(22.92)between 2004-2005 and 2018-2019,which indicated the progressing trend and better scope for agriculture *** the contrary,some districts expressed threat(a decline of above 20.00 of agricultural efficiency index)and needed special care for the improvement of agricultural efficiency in four northern districts(Bagalkot,Bidar,Raichur,and Bijapur),three southern districts(Chitradurga,Chikballapur and Hassan),and two southern districts(Koppal and Gadag)in *** 2004-2005,irrigation intensity varied from 3.19%to 56.39%,with the lowest irrigation intensity in Kodagu District and the highest irrigation intensity in Shimoga *** 2018-2019,irrigation intensity changed from 0.77%to 72.77%,with the lowest irrigation intensity in Kodagu District and the highest in Dakshin Kannad ***,the research scrutinized the complex relationship between agricultural efficiency and irrigation intensity,with the correlation coefficient increased from 0.162 during 2004-2005 to 0.255 during *** implies that in both periods,a low positive

关键词： Agricultural efficiency Irrigation intensity One-way analysis of variance(ANOVA) Food security Karnataka

Experimental Evaluation of a Multistage Reciprocating Evaporative Cooler Performance for Varied Climatic Conditions

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Journal of Thermal Science 2023年第4期32卷 1523-1535页

作者： Sampath suranjan SALINS S.V.KOTA REDDY Shiva KUMAR School of Engineering and IT Manipal Academy of Higher EducationDubai CampusDubaiPO 345050UAE Mechanical Engineering Department VIT-AP UniversityAmaravatiAndra Pradesh52223India Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipal576104India

Current system focuses on design&construction of a multistage reciprocating evaporative cooling test *** packings that are used will undergo the reciprocating action,powered by the cam follower mechanism maintained at an actual rotation *** dry bulb temperature&humidity values are varied to replicate the varying climatic conditions,and the output parameters such as cooling load,evaporation rate(ER),humidification efficiency(HE),coefficient of performance(COP)are *** results showed that as inlet humidity raises,the performance of system *** the rise in the camshaft speed or packing velocity,there is an upsurge in the performance until a cam speed of 10 r/min or packing velocity of 0.083 m/s and with further increases in the value,overall performance *** system gave a maximum COP,ER,and HE equal to 3.80,73.87%,and 0.53 g/kg respectively.A rise in the inlet air temperature yielded a maximum change in dry bulb temperature of 8.2℃.Overall,results indicated that evaporative cooling is more effective in arid climates than the cold and humid *** quality test is performed to measure CO_(2),Total Volatile Organic Compound(TVOC),and Formaldehyde(HCHO),and it is found that humidified air entering the defined space is of excellent quality.

关键词： multistage humidifier evaporative cooling reciprocating packing humidification efficiency

Tonian–Ediacaran Tectonometamorphic History of the Sa'al Complex,Sinai(Egypt):Implications for the Tectonostratigraphic Framework of the Northern Arabian–Nubian Shield

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1545-1565页

作者： Mohamed W.ALI-BIK suranjan GHOSH NPRABHAKAR Said HAbd El RAHIM Hilmy EMOUSSA Geological Sciences Department National Research Centre(NRC)DokkiCairo 12622Egypt Department of Earth Sciences Indian Institute of Technology BombayMumbai 400076India

The Sa'al Metamorphic Complex(SMC;southern Sinai)encompasses the oldest arc rocks in the Arabian–Nubian Shield,comprising two non-consanguineous metavolcanic successions(the Agramiya Group and the Post-Ra'ayan Formation)separated by the metasediments of the Ra'ayan *** experienced three distinct deformational events(D_(1)–D_(3))and two low-medium grade regional metamorphic events(M_1–M_(2)).The Agramiya Group and the Ra'ayan Formation experienced all tectonometamorphic events(D_1–D_(3)and M_(1)–M_(2)),whereas the Post-Ra'ayan volcanic rocks were only affected by the D_(3)and M_(2)events.D_(1)is an extensional event and is connected to the late Rodinia break-up(~Tonian;900–870 Ma).The M_(1)metamorphism variably affected the older Agramiya Group,the rhyolitic tuffs experiencing lower to upper greenschist facies conditions and the basic and intermediate volcanic rocks undergoing amphibolite facies *** Ra'ayan Formation metasediments experienced upper greenschist to amphibolite facies *** upper greenschist facies M_(2)affected the youngest Post-Ra'ayan volcanic rocks and other stratigraphic *** compressive D_(2)and D_(3)events were coeval with the accretion of dismembered terranes in the assembly of Gondwana.D_(2)can be linked to the Tonian–Cryogenian arc-arc assembly(~880–760 Ma;in Elat and Sinai),whereas D_(3)and the accompanying M_(2)is constrained to 622–600 Ma(Ediacaran).

关键词： deformation microstructure metamorphism Sa'al Metamorphic Complex Arabian–Nubian Shield

Extinction of lizards in Sri Lanka’s geographically isolated locations

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Life Research 2023年第4期6卷 22-26页

作者： Buddhi Dayananda Thilina Surasinghe suranjan Karunarathna Buddhika Madurapperuma Lin Zhang School of Agriculture and Food Sciences The University of QueenslandBrisbane QLD 4072Australia Department of Biological Sciences Bridgewater State UniversityBridgewaterMA 02325USA Nature Explorations and Education Team(NEET) No:B-1/G-6De Soysapura FlatsMoratuwa 10400Sri Lanka Green Diamond 220/BMaharanugegodaRagama 11010Sri Lanka School of Basic Medical Sciences Hubei University of Chinese MedicineWuhan 430065China

Climate warming is projected to drive the extinction of approximately one-fifth of the world’s lizard species within the next 60 years(by 2080).However,it remains unclear to what extent and how the global lizard population will be affected by this phenomenon on a geographical ***,there is a need to establish a connection between extinction risk and the prioritization of conservation *** this context,we aim to address concerns related to geographically isolated and critically small lizard populations,highlighting why they face an exceptionally high risk of *** also explore the potential for entire populations to vanish without notice.A comprehensive understanding of these factors is essential to inform the prioritization of conservation initiatives aimed at safeguarding lizard populations in tropical countries under future climate change scenarios.

关键词： climate change communal nesting conservation lizards maternal plasticity philopatry