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Are Environmental Vanguard Firms More Proactive Towards Environmental Conservation?An Empirical Study of Power Sector Firms in India

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Journal of Environmental & Earth Sciences 2019年第2期1卷 31-41页

作者： Arun kumar Vishwakarma Arvind k Nema National Institute of Industrial Engineering MumbaiIndia Indian Institute of Technology delhi New DelhiIndia

Environmental protection is a crucial issue for environmentalists and *** every stakeholder in the industrial production process of a product is concerned about the detrimental effects on the environment due to *** environmental regulations are in place,some firms across diverse industrial sectors are considered as the environmental vanguard,i.e.,leaders in environmental *** being environmental vanguard result in environmental proactivity?This paper,through an empirical study of Indian power sector firms,studies the environmental proactivity of the firms who are known to be leaders in the adoption of environmental protection norms.A questionnaire-based survey method is used to analyse the responses *** study uses 280 responses for the analysis of the *** hypotheses are proposed and tested statistically through Structural Equation Modelling(SEM).The statistical analysis reveals that the firms who are environmental vanguard are more proactive towards environmental *** findings of the study can be useful for the policymakers and environmental managers in the formulation of policies which can be considered as a benchmark for the firms for the protection of the environment.

关键词： Proactive environmental strategies Environmental vanguard Statistical analysis Power sector Structural equation modelling

Reduction in the Water Level of Lake Victoria and Its Implications on Livelihoods in Rwanjaba Lakeshore Community,Uganda

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Chinese Journal of Population,Resources and Environment 2012年第1期10卷 64-72页

作者： Semakula Henry Musoke Boon E k Human Ecology department Vrije Universiteit BrusselLaarbeeklaan 107/103B-1090BrusselsBelgium

This paper examines the livelihood challenges experienced in Rwanjaba Lakeshore Community during the period of low water level in Lake Victoria between 2004 and 2007 and identifies the livelihood coping strategies that were adopted to address them.A total of 55 households were randomly sampled and the data collection methods included household questionnaires and participant *** data were analyzed using the Statistical Package for Social Science(SPSS) and the results presented with the help of descriptive *** livelihood challenges experienced during the low lake water level included fish shortage(34.5%),household food scarcity(23.6%),sex for fish(18.2%),family breakdown(12.7%),increased theft(7.2%) and accidents due to the exposed rocks in the lake(3.6%).The livelihood coping strategies adopted to redress the challenges included causal labour(32.7%),maize roasting(23.6%),sand mining(18.2%),selling of snacks(12.7%),selling household property(9.1%) and resorting shop and market credits(3.6%).The paper proposes a number of recommendations for improving the livelihood of the community ranging from policy reforms to the diversification of activities.

关键词： coping strategies Lake Victoria livelihoods waterlevel reduction

desulfurization of dibenzothiophene(dBT) by a novel strain Lysinibacillus sphaericus dMT-7 isolated from diesel contaminated soil

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Journal of Environmental Sciences 2011年第6期23卷 975-982页

作者： Ashutosh Bahuguna Madhuri k.Lily Ashok Munjal Ravindra N.Singh koushalya dangwal department of Biotechnology Modern Institute of Technology(MIT)DhalwalaRishikesh 249201UttarakhandIndia department of Bioscience and Biotechnology Banasthali UniversityBanasthali 304022RajasthanIndia department of Biochemistry S.B.S.P.G.Institute of Biomedical Sciences and ResearchBalawalaDehradun 248001UttarakhandIndia

A new bacterial strain dMT-7 capable of selectively desulfurizing dibenzothiophene（dBT） was isolated from diesel contaminated *** dMT-7 was characterized and identified as Lysinibacillus sphaericus dMT-7（NCBI GenBank Accession ***496620） using 16S rdNA gene sequence *** desulfurized product of dBT,2-hydroxybiphenyl（2HBP）,was identified and confirmed by high performance liquid chromatography analysis and gas chromatography-mass spectroscopy analysis *** desulfurization kinetics revealed that dMT-7 started desulfurization of dBT into 2HBP after the lag phase of 24 hr,exponentially increasing the accumulation of 2HBP up to 15 days leading to approximately 60% desulfurization of the ***,further growth resulted into dBT *** induced culture of dMT-7 showed shorter lag phase of 6 hr and early onset of stationary phase within 10 days for desulfurization as compared to that of non-induced culture clearly indicating the inducibility of the desulfurization pathway of *** addition,Lysinibacillus sphaericus dMT-7 also possess the ability to utilize broad range of substrates as sole source of sulfur such as benzothiophene,3,4-benzo dBT,4,6-dimethyl dBT,and 4,6-dibutyl ***,Lysinibacillus sphaericus dMT-7 could serve as model system for efficient biodesulfurization of diesel and petrol.

关键词： biodesulfurization colony forming units .dibenzothiophene high performance liquid chromatography Lysinibacillus sphaericus dMT-7

Tailoring active compounds across biological membranes by cubosomal technology: an updated review

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Journal of Chinese Pharmaceutical Sciences 2013年第4期22卷 303-313页

作者： Vinod k.R. Sravya k. Sandhya S. david Banji Anbazhagan S. Prameela Rani A. Nalanda College of Pharmacy Surya School of Pharmacy College of Pharmaceutical Sciences Acharya Nagarjuna University

It is challenging for many drugs to be transported across various biological membranes. Furthermore, development of many drugs gets thwarted owing to their hydrophilic nature. The bioavailability of such drugs, which is the function of their ability to cross the membrane, tends to be low and exhibit high intra and inter subject variability. At present, formulation scientists are pursuing many projects for transdermal, nasal, target delivery of many active compounds, and it is prudent to explore alternative possibilities. Cubosomes offer transportation and tailoring of active compounds intended for both systemic and dermal delivery. Cubosomes are dispersed, self-assembled nanoparticles of bicontinuous cubic liquid crystalline phase formed from lipid and surfactant systems. Monoolein, poloxamer 407 and polyvinyl alcohol are the mostly used ingredients in the formulation of cubosomes. The adjustment in lipid composition can control the internal and structural changes of cubosomes. Based on the nodal surfaces, three structures of cubosomes proposed are Pn3m, Ia3d and Im3m. Top-down and bottom-up techniques are widely considered in the formulation process of extreme viscous bulk phase and aggregate from a precursor respectively. This article gives a bird's eye view about the engineering, characterization and evaluation of cubosomes, covering researches and applications of cubosomes done till date.

关键词： Cubosomes Liquid crystal Phase transition Cryo-TEM Birefringent

Experimental and numerical investigation of liquid-solid binary fluidized beds： Radioactive particle tracking technique and dense discrete phase model simulations

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Particuology 2017年第4期15卷 112-122页

作者： Varsha Jain Lipika kalo deepak kumar Harish J. Pant Rajesh k. Upadhyay department of Chemical Engineering Indian Institute of Technology Guwahati Assam 781039 India Isotope Production and Applications division Bhabha Atomic Research Centre Trombay Mumbai 400085 India

Liquid-solid binary fluidized beds are widely used in many industries. However, the flow behavior of such beds is not well understood due to the lack of accurate experimental and numerical data. In the current study, the behavior of monodisperse and binary liquid-solid fluidized beds of the same density but dif- ferent sizes is investigated using radioactive particle tracking （RPT） technique and a dense discrete phase model （ddPM）. Experiments and simulations are performed in monodisperse fluidized beds containing two different sizes of glass beads （0.6 and I mm） and a binary fluidized bed of the same particles for vari- ous bed compositions. The results show that both RPT and ddPM can predict the mixing and segregation pattern in liquid-solid binary fluidized beds. The mean velocity predictions of ddPM are in good agree- ment with the experimental findings for both monodisperse and binary fluidized beds. However, the axial root mean square velocity predictions are only reasonable for bigger particles. Particle-particle interac- tions are found to be critical for predicting the flow behavior of solids in liquid-solid binary fluidized beds.

关键词： Binary bed Liquid-solid flow Fluidized bed Radioactive particle tracking dense discrete phase model

Loaded Rubber-Like Materials Subjected to Small-Amplitude Vibrations

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Chinese Journal of Polymer Science 2014年第5期32卷 620-632页

作者： T.Beda J.B.Casimir k.E.Atcholi Y.Chevalier Industrial and Mechanical Engineering department Ecole Nationale Supérieure Polytechnique (ENSP) département de Physique Faculté des Sciences Université de NGaoundéré Laboratoire d’Ingénierie des Structures Mécanique et des Matériaux (LISMMA) SUPMECA de Paris Institut de Recherche sur les Transports l’Energie et la Société (IRTES EA7274) Laboratoire Systèmes et Transport (SeT EA 3317) Université de Technologie de Belfort-Montbéliard (UTBM)

This paper proposes a constitutive law and a method for characterizing highly preloaded viscoelastic materials subjected to linear （small-amplitude） vibrations. A multiplicative non-separable variables law has been suggested to model the behavior that depends on both stretch and time/frequency. This approach allows splitting the intricate combined test performed simultaneously on both stretch and frequency, generally in a limited experimental domain up to 100 Hz, into two independent tests. Thus, on one hand, the dynamic complex modulus dependent on frequency alone is evaluated on the basis of vibration tests in a large experimental domain up to 100 kHz. On the other hand, energetic parameters are determined from a quasi-static hyperelastic tensile test. The complex modulus, dependent on both stretch and frequency, is then deduced from the results acquired from uncoupled investigations. This work shows that, in extension, the elastic modulus increases with increasing stretch, and the loss factor decreases with increasing stretch; while, in compression, around the material undeformed state, the modulus increases as the stretch increases till a certain value of compression stretch （upturn point depending on material characteristics）, and then the modulus decreases as the stretch increases. Globally, preload rigidifies materials but reduces their damping property. These results closely match a well-known observation in solid mechanics.

关键词： Elastomers Viscoelasticity Hyperelasticity Vibrations Modeling Characterization Combined modulus.

REFINEMENTS OF THE FAN-TOdd'S INEQUALITIES

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Chinese Annals of Mathematics,Series B 2002年第1期23卷 75-84页

作者： k. k. CHONG department of Applied Mathematics, The Hong kong Polytechnic University Hong kong, China. E-mail:makkchon@inet.po1yu.edu.hk department of Applied Mathematics The Hong Kong Polytechnic University Hong Kong China

Refinements to inequalities on inner product spaces are presented. In this respect, inequali-ties dealt with in this paper are: Cauchy’s inequality, Bessel’s inequality, Fan-Todd’s inequality and Fan-Todd’s determinantal inequality. In each case, a strictly increasing function is put for-ward, which lies between the smaller and the larger quantities of each inequality. As a result. an improved condition for equality of the Fan-Todd’s determinantal inequality is deduced.

关键词： Cauchy's inequality Bessel's inequality Fan-Todd's inequality Fan-Todd's determinantal inequality Refinements of inequalities

Transport and humification of dissolved organic matter within a semi-arid floodplain

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Journal of Environmental Sciences 2017年第7期29卷 24-32页

作者： Wenming dong Jiamin Wan Tetsu k.Tokunaga Benjamin Gilbert kenneth H.Williams Earth and Environment Sciences Area Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

In order to understand the transport and humification processes of dissolved organic matter（dOM） within sediments of a semi-arid floodplain at Rifle,Colorado,fluorescence excitation–emission matrix（EEM） spectroscopy,humification index（HIX） and specific UV absorbance（SUVA） at 254 nm were applied for characterizing depth and seasonal variations of dOM *** revealed that late spring snowmelt leached relatively fresh dOM from plant residue and soil organic matter down into the deeper vadose zone（VZ）.More humified dOM is preferentially adsorbed by upper VZ sediments,while non-or lesshumified dOM was transported into the deeper ***,dOM at all depths undergoes rapid biological humification process evidenced by the products of microbial by-product-like（i.e.,tyrosine-like and tryptophan-like） matter in late spring and early summer,particularly in the deeper VZ,resulting in more humified dOM（e.g.,fulvic-acid-like and humic-acid-like substances） at the end of *** indicates that dOM transport is dominated by spring snowmelt,and dOM humification is controlled by microbial degradation,with seasonal *** is expected that these relatively simple spectroscopic measurements（e.g.,EEM spectroscopy,HIX and SUVA） applied to depth-and temporally-distributed pore-water samples can provide useful insights into transport and humification of dOM in other subsurface environments as well.

关键词： dissolved organic matter Transport Humification Semi-arid Fluorescence excitation-emission matrix

Mechanisms of resistance to FGFR1 inhibitors in FGFR1-driven leukemias and lymphomas:implications for optimized treatment

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Cancer drug Resistance 2021年第3期4卷 607-619页

作者： John k.Cowell Tianxiang Hu Georgia Cancer Center 1410 Laney Walker BlvdAugustaGA 30912USA

Myeloid and lymphoid neoplasms with eosinophilia and FGFR1 rearrangements(MLN-eo FGFR1)disease is derived from a pluripotent hematopoietic stem cell and has a complex presentation with a myeloproliferative disorder with or without eosinophilia and frequently presents with mixed lineage T-or *** myeloproliferative disease frequently progresses to AML and lymphoid neoplasms can develop into acute *** matter the cell type involved,or clinical presentation,chromosome translocations involving the FGFR1 kinase and various partner genes,which leads to constitutive activation of downstream oncogenic signaling *** patients are not responsive to treatment regimens developed for other acute leukemias and survival is *** development of specific FGFR1 inhibitors has suggested an alternative therapeutic approach but resistance is likely to evolve over *** models of this disease syndrome have been developed and are being used for preclinical evaluation of FGFR1 *** lines from these models have now been developed and have been used to investigate the mechanisms of resistance that might be expected in clinical *** far,a V561M mutation in the kinases domain and deletion of PTEN have been recognized as leading to resistance and both operate through the PI3k/AkT signaling *** of the important consequences is the suppression of PUMA,a potent enforcer of apoptosis,which operates through *** BCL2 in the resistant cells leads to suppression of leukemia development in mouse models,which potentially provides an opportunity to treat patients that become resistant to FGFR1 *** addition,elucidation of molecular mechanisms underlying FGFR1-driven leukemias and lymphomas also provides new targets for combined treatment as another option to bypass the FGFR1 inhibitor resistance and improve patient outcome.

关键词： MLN-eo FGFR1 lymphomas FGFR1 mutations PTEN PUMA mouse models