Cyanobacterial Diversity Shifts Induced by Butachlor in Selected Indian Rice Fields in Eastern Uttar Pradesh and Western Bihar Analyzed with PCR and DGGE

( Kumari ),( Nidhi ),( Om Prakash Narayan ),( Lal Chand Rai ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.1

The Impact of Geopolitical Risk on Financial Conditions of Emerging Economies

Namarta Kumari BAJAJ(Namarta Kumari BAJAJ ),Tariq AZIZ(Tariq AZIZ ),Sonia KUMARI(Sonia KUMARI ),Marim ALENEZI(Marim ALENEZI ),Naif Mansour MATHKUR(Naif Mansour MATHKUR ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1

The detrimental impacts of financial instability on the world economy during the financial crisis highlighted the requirement to understand the existing financial circumstances. Stability and developments in financial conditions are important for economic prosperity. This study analyses the impact of geopolitical risk on the economic conditions of some specific emerging economies using monthly data from January 1999 to September 2016 by applying a fixed-effects panel data model. The estimation results demonstrated that geopolitical risk has a significant, negative impact on financial conditions. It shows geopolitical risk could be seen as a key factor that contributes towards financial conditions. Further, it implies that negative shocks of high geopolitical risk experienced by emerging economies are one of the primary reasons for the financial conditions’ deterioration. The findings provide important insights for governments, policymakers, and investors. For instance, governments and politicians should refrain from expressing or producing tension, economic discomfort, or news that is likely to increase a high geopolitical risk. Maintaining a close eye on geopolitical risk and its sources may also help to stabilize financial conditions and develop a well-functioning financial system. As a result, investors would be better informed about an economy’s economic and financial conditions, allowing them to diversify their international portfolios and devise investing strategies during uncertain economic times.

Response to the Comment by Chandra S on “Interaction of Ion Cyclotron Electromagnetic Wave with Energetic Particles in the Existence of Alternating Electric (AC) Field Using Ring Distribution”

Kumari Neeta Shukla,Jyoti Kumari,Rama Shankar Pandey 한국우주과학회 2023 Journal of Astronomy and Space Sciences Vol.40 No.2

Response to the Comment by Chandra S on “Interaction of Ion Cyclotron Electromagnetic Wave with Energetic Particles in the Existence of Alternating Electric (AC) Field Using Ring Distribution”

Interaction of Ion Cyclotron Electromagnetic Wave with Energetic Particles in the Existence of Alternating Electric Field Using Ring Distribution

Kumari Neeta Shukla,Jyoti Kumari,Rama Shankar Pandey 한국우주과학회 2022 Journal of Astronomy and Space Sciences Vol.39 No.2

The elements that impact the dynamics and collaborations of waves and particles in the magnetosphere of planets have been considered here. Saturn’s internal magnetosphere is determined by substantiated instabilities and discovered to be an exceptional zone of wave activity. Interchanged instability is found to be one of the responsible events in view of temperature anisotropy and energization processes of magnetospheric species. The generated active ions alongside electrons that constitute the populations of highly magnetized planets like Saturn’s ring electron current are taken into consideration in the current framework. The previous and similar method of characteristics and the perturbed distribution function have been used to derive dispersion relation. In incorporating this investigation, the characteristics of electromagnetic ion cyclotron wave (EMIC) waves are determined by the composition of ions in plasmas through which the waves propagate. The effect of ring distribution illustrates non-monotonous description on growth rate (GR) depending upon plasma parameters picked out. Observations made by Cassini found appropriate for modern study, have been applied to the Kronian magnetosphere. Using Maxwellian ring distribution function of ions and detailed mathematical formulation, an expression for dispersion relation as well as GR and real frequency (RF) are evaluated. Analysis of plasma parameters shows that, proliferating EMIC waves are not developed much when propagation is parallelly aligned with magnetosphere as compared to waves propagating in oblique direction. GR for the oblique case, is influenced by temperature anisotropy as well as by alternating current (AC) frequency, whereas it is much affected only by AC frequency for parallel propagating waves.

Defense Inducer Compounds Up-regulated the Peroxidase, Polyphenol Oxidase, and Total Phenol Activities against Spot Blotch Disease of Wheat

Puja Kumari,Chandrashekhar Azad,Ravi Ranjan Kumar,Jyoti Kumari,Kumar Aditya,Amarendra Kumar 한국식물병리학회 2023 Plant Pathology Journal Vol.39 No.2

Spot blotch disease of wheat caused by Bipolaris sorokiniana (Sacc.) Shoem is considered as an economically important disease which affects all the growing stages of wheat crop. Therefore, it is important to search some effective management strategies against the spot blotch pathogen. Some synthetic elicitor compounds (salicylic acid, isonicotinic acid, and chitosan) and nano-particles (silver and aluminum) were tested against the pathogen to observe the change in biochemical activity and defense action of wheat plant against spot blotch disease. All the tested elicitor compounds and nano-particles showed a significant increase in activity of peroxidase, polyphenol oxidase (PPO), and total phenol over control. The highest increase in activity of peroxidase was recorded at 72 h from chitosan at 2 mM and 96 h from silver nano-particle at 100 ppm. Maximum PPO and total phenol activity were recorded from chitosan at 2 mM and silver nano-particle at 100 ppm as compared to pathogen-treated and healthy control. The lowest percent disease index, lowest no. of spots/leaf, and no. of infected leaves/plant were found in silver nano-particle at 100 ppm and chitosan at 2 mM, respectively. The use of defense inducer compounds results in significantly up-regulated enzymatic activity and reduced spot blotch disease. Therefore, chitosan and silver nanoparticle could be used as alternative methods for the management of spot blotch disease.

Protective effect of Basella alba leaf against diabetic nephropathy in rats

Kumari Reshma,Goldar Waquar Ahmed,Mondal Subhodeep,Patra Susmita,Bhattacharya Sanjib,Haldar Pallab Kanti 경희대학교 융합한의과학연구소 2021 Oriental Pharmacy and Experimental Medicine Vol.21 No.1

Chronic hyperglycemic condition leads to development of diabetic nephropathy (DN). Basella alba is an important edible vegetable in India. Present study was conducted to inquire the effects of methanol extract from Basella alba leaf (MEBA) against diabetic nephropathy in rats. A single intraperitoneal injection of streptozotocin (55 mg/kg) was given to Wistar albino rats to induce diabetes. After 4 weeks of diabetes induction, the rats were divided into normal control group, disease DN group, MEBA treatment groups (200 and 400 mg/kg), metformin treatment group (150 mg/kg) and the treatment was continued for next 3 weeks. In MEBA treated groups there were marked improvements in blood glucose, ALP, ALT, total pro-tein, serum lipid profile such as total cholesterol, triglyceride, HDL levels and renal functions such as urine volume, urinary protein excretion, serum creatinine, blood urea nitrogen, creatinine clearance as compared to non-treated DN group. There was significant rise in malonaldehyde level, and decline in acivites of superoxide dismutase and reduced Glutathione (GSH) of kidney in diabetic rats as compared to normal control group rats. The MEBA treated groups showed dose dependent resto-ration of altered oxidative stress parameters. Moreover, from renal histopathology it was evident that the abnormal thickening of Glomerular basement membrane in kidney of diabetic rats were improved in MEBA treated rats. From the present study it can be concluded that, Basella alba leaf has marked protective effect against diabetic nephropathy and proteinuria in rats.

Output feedback based event-triggered sliding mode control for delta operator systems

Kumari, Kiran,Bandyopadhyay, Bijnan,Kim, Kyung-Soo,Shim, Hyungbo Elsevier 2019 Automatica Vol.103 No.-

<P><B>Abstract</B></P> <P>In this paper, we present an output feedback based design of event-triggered sliding mode control for delta operator systems. For discrete-time systems, multi-rate output sampling based state estimation technique is very useful if the output information is available. But at high sampling rates, the discrete-time representation of the system using shift operator becomes numerically ill-conditioned and as a result, the observability matrix becomes singular as the sampling period tends to zero. Here, a new formulation of multi-rate state estimation (MRSE) for a small sampling period is presented. We first propose a new observability matrix and then discuss its relationship with the observability matrix defined in the conventional sense. For the delta operator system with matched uncertainty, we have presented the design of MRSE based sliding mode control (SMC). Additionally, to make the control efficient in terms of resource utilization, MRSE based event-triggered SMC is proposed. The absence of Zeno phenomenon is guaranteed as the control input is inherently discrete in nature. Finally, the effectiveness of the proposed method is illustrated through numerical simulations, considering a ball and beam system and a general linear system as a numerical example.</P>

Behaviour of bolted connections in concrete-filled steel tubular beam-column joints

Kumari Beena,Kwatra Naveen,Sharma Shruti 국제구조공학회 2017 Steel and Composite Structures, An International J Vol.25 No.4

Many authors have established the usefulness of concrete filled steel tubular (CFST) sections as compression members while few have proved their utility as flexural members. To explore their prospective as part of CFST frame structures, two types of connections using extended end plate and seat angle are proposed for exterior joints of CFST beams and CFST columns. To investigate the performance and failure modes of the proposed bolted connections subjected to static loads, an experimental program has been executed involving ten specimens of exterior beam-to-column joints subjected to monotonically increasing load applied at the tip of beam, the performance is appraised in terms of load deformation behaviour of joints. The test parameters varied are the beam section type, type and diameter of bolts. To validate the experimental behaviour of the proposed connections in CFST beam-column joints, finite element analysis for the applied load has been performed using software ATENA-3D and the results of the proposed models are compared with experimental results. The experimental results obtained agree that the proposed CFST beam-column connections perform in a semi-rigid and partial strength mode as per specification of EC3.

Feminist Consciousness and Women's Movements in Sri Lanka

Kumari Jayawardena 숙명여자대학교 아세아여성문제연구소 1997 Asian Women Vol.5 No.-

Improved efficiency of DTGe(FBTTh₂)₂-based solar cells by using macromolecular additives: How macromolecular additives versus small additives influence nanoscale morphology and photovoltaic performance

Kumari, Tanya,Moon, Mijin,Kang, So-Huei,Yang, Changduk Elsevier 2016 Nano energy Vol.24 No.-

<P><B>Abstract</B></P> <P>In order to address the question of how macromolecular additive processing in recent years, sparsely used, affects structural organization and photovoltaic performance, various macromolecular additives (PS, PDMS, and PMMA) vis-à-vis small DIO additive are applied to a model bulk-heterojunction (BHJ) system based on DTGe(FBTTh<SUB>2</SUB>)<SUB>2</SUB>. These additives have been shown to exhibit a strong influence on film morphology as a function of additives type, with significant changes in packing orientation, film roughness, and feature size observed, leading to improved power-conversion efficiency (PCE). Interestingly, an unexpectedly large increase in PCEs, from 6.03% to 7.07%, is demonstrated upon adding 1% (w/w) PMMA to DTGe(FBTTh<SUB>2</SUB>)<SUB>2</SUB>:PC<SUB>61</SUB>BM devices, possessing an even greater PCE than DIO. In addition, when 0.2% (v/v) DIO is added to DTGe(FBTTh<SUB>2</SUB>)<SUB>2</SUB>:PC<SUB>71</SUB>BM, several key device metrics increase, producing the highest PCE of 7.55% for DTGe(FBTTh<SUB>2</SUB>)<SUB>2</SUB>-based devices to date. In the present work, PMMA is confirmed to provide a highly effective means for controlling morphology and significantly enhancing PCEs. Not only do the results from this study will aid in understanding the mechanisms underlying the impact of macromolecular additive processing, but they will also be key in leading to future studies that will elucidate the driving forces behind and exact points of interaction of macromolecular additives.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The effects of various macromolecular additives on OPV performance are investigated. </LI> <LI> Introducing PMMA in DTGe(FBTTh2)2:PC61BM can bring 17% improvement in the efficiency. </LI> <LI> The efficiency up to 7.55% in DIO-treated DTGe(FBTTh2)2:PC71BM films is achieved. </LI> <LI> Our study aids in understanding the mechanisms of the macromolecular additives. </LI> <LI> PMMA utility should be applicable to various other organic solar systems. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>