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Seedling survival and growth of Aquilaria malaccensis in different microclimatic conditions of northeast India

Journal of Forestry Research 2012年第4期23卷 569-574页

作者： P.Saikia m.l.khan Centre for Environmental Science Central University of JharkhandCTI CampusRatu Lohardaga RoadBrambe-835205RanchiJharkhandIndia Department of Forestry NERIST(Deemed University)Nirjuli-791009ItanagarArunachal PradeshIndia

We studied seedling survival and growth ofAquilaria malaccensis in three different environmental conditions （homegardens, green house and in different canopy conditions） of northeast India. Results show that mean seasonal survival was highest in green house （95.53%±2.33）, followed by homegardens （89.3%±1.89） and different canopy conditions （77.62%±6.73）; the highest values were found during February to April for both the homegardens （96%±1.68） and green house （98% ± 0.88） and lowest during November to January （78%±2.99） in homegardens and may to July （90%：t：4.53） in green house. In case of transplanted seedlings in different canopy conditions, mean seasonal survival was highest during may to July （98%±1.92） and lowest during August to October （66%±12.81）. However, mean seasonal growth of collar diameter was highest in different canopy conditions （23.99%±1.76） compared to green house （21.52%±2.70） and homegardens （12.44%±1.33） and it was highest during rainy season （may to July） and lowest during dry winter （November to January） in all the three experi- mental sites. These variations may be due to the different microclimatic conditions as well as nutrient status of the soil in all the three experimen- tal sites. Although, seedling quality plays a great role in their survival and growth, based on the result of green house experiment, it can be concluded that maintenance of seedlings in green house conditions during their early growth period may improve both the survival and growth for large scale plantation of the species. Thus, the species can be reintroduced in its natural forest range to compensate the loss of natural population of this precious species in northeast India.

关键词： Aquilaria malaccensis seedling survival seedling growth homegardens canopy conditions green house

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A systematic review on the aboveground biomass and carbon stocks of Indian forest ecosystems

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Ecological Processes 2018年第1期7卷 165-176页

作者： Onkar Salunkhe P.K.Khare Richa Kumari m.l.khan laboratory of Ecology Department of BotanyDr.Hari Singh Gour UniversitySagarMadhya Pradesh 470003India

Background:Tropical forests play a crucial role as source and sink in global carbon *** and other anthropogenic activities have led to degradation of forest land,and ultimately,it results in loss of biodiversity and increases concentration of CO_(2) in ***,there is urgent need to estimate regional and national level carbon stock for making forest-based policies and strategies for mitigation of CO_(2).Patchy and sporadic information is available on biomass and carbon stock of Indian *** paper presents a systematic review and comprehensive account of studies conducted in different forest types in ***:There are six major forest types found in India consisting of 15 groups and other subgroups with peculiar *** used by researchers for biomass/carbon stock estimation are destructive,nondestructive,tree inventories data,species-specific biomass estimation,and remote *** of estimates are based on nondestructive allometric equation *** showed positive correlation between tree species,diameter at breast height,and biomass/carbon ***-and medium-sized growing trees,invasive species,mixed forest,Agroforestry,and Agrosilviculture also play an important role in atmospheric carbon *** results of diverse forest carbon stock studies are broadly categorized in North,Central,and Southern *** review will be helpful for developing conservation policies and decision to increase carbon stock and also REDD+program for particular forest ***:The systematic literature review was carried out to gather and summarize information from different studies conducted on forest ecosystems and quantification methods used for biomass estimation and carbon stock in different forests types and states of *** general,great variability occurs in aboveground biomass and carbon stock on account of climatic and geographic *** obtain good and accurate

关键词： Tropical forests Aboveground biomass Carbon stock

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A Synergistic multi-Attribute Decision-making method for Educational Institutions Evaluation Using Similarity measures of Possibility Pythagorean Fuzzy Hypersoft Sets

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Computer modeling in Engineering & Sciences 2025年第1期142卷 501-530页

作者： Khuram Ali khan Saba mubeen Ishfaq Atiqe Ur Rahman Salwa El-morsy Department of mathematics University of SargodhaSargodha40100Pakistan Department of mathematics University of Management and TechnologyLahore54000Pakistan Department of mathematics College of ScienceQassim UniversityBuraydah51452Saudi Arabia

Due to the numerous variables to take into account as well as the inherent ambiguity and uncertainty,evaluating educational institutions can be *** concept of a possibility Pythagorean fuzzy hypersoft set(pPyFHSS)is more flexible in this regard than other theoretical fuzzy set-like models,even though some attempts have been made in the literature to address such *** study investigates the elementary notions of pPyFHSS including its set-theoretic operations union,intersection,complement,OR-and *** results related to these operations are also modified for ***,the similarity measures between pPyFHSSs are formulated with the assistance of numerical examples and ***,an intelligent decision-assisted mechanism is developed with the proposal of a robust algorithm based on similarity measures for solving multi-attribute decision-making(mADm)problems.A case study that helps the decision-makers assess the best educational institution is discussed to validate the suggested *** algorithmic results are compared with the most pertinent model to evaluate the adaptability of pPyFHSS,as it generalizes the classical possibility fuzzy set-like theoretical ***,while considering significant evaluating factors,the flexibility of pPyFHSS is observed through structural comparison.

关键词： Hypersoft set Pythagorean fuzzy hypersoft set computational complexity multi-attribute decision-making optimization similarity measures uncertainty

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Exploring Nanoscale Perovskite materials for Next‑Generation Photodetectors:A Comprehensive Review and Future Directions

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Nano-micro letters 2025年第2期17卷 46-108页

作者： Xin li Sikandar Aftab maria mukhtar Fahmid Kabir muhammad Farooq khan Hosameldin Helmy Hegazy Erdi Akman State Key laboratory of Pulsed Power laser Technology National University of Defense TechnologyHefei 230037AnhuiPeople’s Republic of China Anhui laboratory of Advanced laser Technology Hefei 230037AnhuiPeople’s Republic of China Nanhu laser laboratory Changsha 410015HunanPeople’s Republic of China Department of Semiconductor Systems Engineering and Clean Energy Sejong UniversitySeoul 05006Republic of Korea Department of Artificial Intelligence and Robotics Sejong UniversitySeoul 05006Republic of Korea School of Engineering Science Simon Fraser UniversityBurnabyBC V5A 1S6Canada Department of Electrical Engineering Sejong UniversitySeoul 05006South Korea Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Central labs King Khalid UniversityAlQura’aP.O.Box 96061413 AbhaSaudi Arabia Scientific and Technological Research and Application Center Karamanoglu Mehmetbey University70100 KaramanTurkey

The rapid advancement of nanotechnology has sparked much interest in applying nanoscale perovskite materials for photodetection *** materials are promising candidates for next-generation photodetectors(PDs)due to their unique optoelectronic properties and flexible synthesis *** review explores the approaches used in the development and use of optoelectronic devices made of different nanoscale perovskite architectures,including quantum dots,nanosheets,nanorods,nanowires,and *** a thorough analysis of recent literature,the review also addresses common issues like the mechanisms underlying the degradation of perovskite PDs and offers perspectives on potential solutions to improve stability and scalability that impede widespread *** addition,it highlights that photodetection encompasses the detection of light fields in dimensions other than light intensity and suggests potential avenues for future research to overcome these obstacles and fully realize the potential of nanoscale perovskite materials in state-of-the-art photodetection *** review provides a comprehensive overview of nanoscale perovskite PDs and guides future research efforts towards improved performance and wider applicability,making it a valuable resource for researchers.

关键词： Nanoscale perovskites Photodetectors Nanosheets Nanorods Nanowires Quantum dots Nanocrystals

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Kachchh (India) earthquake 2001——causes,severity and impact on groundwater resources

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Journal of Environmental Sciences 2003年第4期15卷 500-505页

作者： m.A.khan m.l.Sharma CentralAridZoneResearchInstitute CentralAridZoneResearchInstitute Jodhpur342003IndiaJodhpur342003India

Earthquake 2001 in Bhuj region of Kachchh district of Gujarat(India) was one of the most devastating earthquakes in the Indian history. This earthquake has caused severe damage to human life and properties. The impact of earthquake on groundwater resources at many locations was significant. Steep rise in static water level due to earthquake was observed at Bhachau and Chandarani. At other location groundwater followed the declining trend.

关键词： earthquake geology groundwater Bhuj, Kachchh

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On the detection of closed orbits in time-dependent systems by using double-pulse lasers

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Communications in Theoretical Physics 2020年第9期72卷 111-117页

作者： S U khan m l Du Institute of Theoretical Physics Chinese Academy of Sciences.Beijing 100190China University of Chinese Academy of Sciences Beijing100049China

In the photodetachment of atoms or negative ions by a double-pulse laser, the first pulse of the double-pulse laser generates waves and the delayed second pulse may detect them. The phenomenon of the excitation and detection of waves by a double-pulse laser can be used to identify the closed orbits in the system. We demonstrate this phenomenon with a negative hydrogen ion(H^-) by analyzing the total population excited by a double-pulse laser in a timedependent field for different physical parameters. By analyzing the total excited population using a double-pulse laser, we can uncover all the closed orbits existing in the system. We demonstrate that this can be realized by scanning the first pulse position and the time delay between the two pulses.

关键词： double-pulse laser detection of closed orbits photodetachment spectra time-dependent systems

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Pollution of water resources due to industrialization in arid zone of Rajasthan, India

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Journal of Environmental Sciences 2001年第2期13卷 218-223页

作者： m A khan Central Arid Zone Research Institute Jodhpur-342003 India.

In arid zone of Rajasthan, India, nearly 21,900 hm2 area along Bandi River has been affected by industrial effluent discharge into the river bed. Analysis of groundwater samples collected from these sites revealed that area at the vicinity of the river is most affected. The effluent water in the river is the main source of contamination of ground water. Concentration of sodium and chloride has been higher with proportional increase in TDS and EC value in the area within zone A (river water), zone B (0-100 m), zone C (101-250 m), zone D (251-500 m) and zone E (501-1000 m). There is decreasing trend in ion concentration from zone A to zone E and F, reflecting reduced effect of effluents. The pollution of water resources has resulted in the degradation of other natural resources such as land, soil and vegetation. Nearly 4463 hm2 (20.38%) area has been very severely affected. EC value at places exceeds 20 dS/m. Soil and land have become hard, compact and saline. Cropping intensity has declined. In the area (3633 hm2) affected severely, the EC value of water varies from 10-20 dS/m. Irrigation with such water has created problem of salinity, sodicity in soils. Herbal biomass declined considerably. Double cropping has almost stopped. Almost 8494 hm2 area is affected moderately. EC of ground water varies from 5 to 10 dS/m. Fragile surface crust, declining trend of phosphorous and potassium in the soil, poor density of natural vegetation are significant manifestations. Apart from this, 5305 hm2 area is slightly affected.

关键词： India Pollution of water resources due to industrialization in arid zone of Rajasthan

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Chemically reactive and radiative von Kármán swirling flow due to a rotating disk

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Applied mathematics and mechanics(English Edition) 2018年第9期39卷 1295-1310页

作者： m.khan J.AHmED l.AHmAD Department of mathematics Quaid-i-Azam UniversityIslamabad 44000Pakistan Department of Basic Sciences University of Engineering and TechnologyTaxila 47050Pakistan Department of mathematics Shaheed Benazir Bhutto UniversitySheringal Upper Dir 18000Pakistan

A new mathematical model is presented to study the heat and mass transfer characteristics of magnetohydrodynamic(mHD) maxwell fluid flow over a convectively heated stretchable rotating disk. To regulate the fluid temperature at the surface, a simple isothermal model of homogeneous-heterogeneous reactions is employed. The impact of nonlinear thermal radiative heat flux on thermal transport features is studied. The transformed nonlinear system of ordinary differential equations is solved numerically with an efficient method, namely, the Runge-Kutta-Felberg fourth-order and fifth-order(RKF45)integration scheme using the mAPlE software. Achieved results are validated with previous studies in an excellent way. major outcomes reveal that the magnetic flux reduces the velocity components in the radial, angular, and axial directions, and enhances the fluid temperature. Also, the presence of radiative heat flux is to raise the temperature of fluid. Further, the strength of homogeneous-heterogeneous reactions is useful to diminish the concentration of reaction.

关键词： rotating stretchable disk magnetic field nonlinear radiative heat flux homogeneous-heterogeneous chemical reaction

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Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William J.Flerlage mark l.Dell’Acqua Brian m.Cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

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Effect of Composts,lime and Diammonium Phosphate on the Phytoavailability of Heavy metals in a Copper mine Tailing Soil

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Pedosphere 2009年第5期19卷 631-641页

作者： m.J.khan D.l.JONES Department of Soil and Environmental Sciences NWFP Agricultural UniversityPeshawar(Pakistan) School of Agricultural and Forest Sciences University of WalesBangorGwynedd LL57 2UW(UK)

Soil samples from a historic copper mine tailing site at the Parys mountain,North Wales(UK) were amended with green waste compost(GC),GC+30% sewage sludge(GCS),lime and diammonium phosphate(DAP),to determine the effect of amendments on DTPA-and Ca(NO3)2-extractable metals in the mine tailing and on the phytoavailability of heavy metals by a lettuce(lactuca sativa l.).Both compost were added at the rate of 10% by weight,lime was added as calcium carbonate equivalent(pH = 7) and DAP at a 2300 mg kg-1 soil *** experiment was arranged in randomised complete design with three replicates in pots under control *** of lime resulted in the largest reduction in metal extractability with DTPA and Ca(NO3)2 and phytoavailability of Cu,Fe and Zn while DAP was effective in lowering Pb extractability and *** exception of Zn,all other metals extracted decreased with time after amendment *** distribution of heavy metals between and within the four procedures of potentially bioavailable sequential extraction(PBASE) varied significantly(P lationships were noted between the metals extracted with PBASE SE1 and Cu,Pb(P lts indicate that addition of lime is sufficient to restore the vegetative cover to a high metal mine waste while DAP is good for stabilizing Pb,but its detrimental role on plant growth and the risk associated with presence of N in DAP(through N leaching) may restrict its chances for remediation of contaminated sites.

关键词： lettuce metal uptake potentially bioavailable sequential extraction

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