检索结果-南通市图书馆

Geoscience Frontiers 2014年第1期5卷 17-24页

作者： Saibal Gupta William K.Mohanty Animesh mandal Surajit Misra Department of Geology and Geophysics Indian Institute of Technology KharagpurKharagpur 721302 West Bengal India

In the eastern part of the Indian shield, late Paleozoic-Mesozoic sedimentary rocks of the Talchir Basin lie precisely along a contact of Neoproterozoic age between granulites of the Eastern Ghats Mobile Belt （EGMB） and amphibolite facies rocks of the Rengali Province. At present, the northern part of the basin experiences periodic seismicity by reactivation of faults located both within the basin, and in the Rengali Province to the north. Detailed gravity data collected across the basin show that Bouguer anomalies decrease from the EGMB （~＋15 mGal）, through the basin （^-10 mGal）, into the Rengali Province （^-15 mGal）. The data are consistent with the reportedly uncompensated nature of the EGMB, and indicate that the crust below the Rengali Province has a cratonic gravity signature. The contact between the two domains with distinct sub-surface structure, inferred from gravity data, coincides with the North Orissa Boundary Fault （NOBF） that defines the northern boundary of the Talchir Basin. Post-Gondwana faults are also localized along the northern margin of the basin, and present-day seismic tremors also have epicenters close to the NOBF. This indicates that the NOBF was formed by reactivation of a Neo- proterozoic terrane boundary, and continues to be susceptible to seismic activity even at the present-day.

关键词： Eastern Ghats Mobile Belt Rengali Province Talchir Basin NOBF Bouguer anomaly Seismicity

Free-radical scavenging properties of low molecular weight peptide(s) isolated from S1 cultivar of mulberry leaves and their impact on Bombyx mori(L.)(Bombycidae)

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2014年第3期5卷 348-356页

作者： Suchisree Jha Palash mandal Phalguni Bhattacharyya Amitava Ghosh Department of Botany University of North BengalSiliguri 734013West BengalIndia Department of Botany University of North Bengal Department of Botany Malda CollegeUniversity of Gour Banga Department of Botany Asutosh College

The mulberry leaves have been considered as a sole food source for silkworm, Bombyx mori （L.）. In present work an attempt was made to investigate the role of low molecular weight peptide（s） isolated from mulberry leaves on silkworm rearing. Also we have tried to find out the role of free-radical scavenging activities of isolated peptide（s） on silkworm growth. Larval growth rate was found effective under the influence of peptide（s）. Consumption rate of larvae after peptide（s） treatment on mulberry leaves was significantly enhanced over control. High antioxidant activity was found in Low molecular weight peptide（s） which have an effect on silkworm.

关键词： Antioxidant HPLC Low molecular peptide(s) Mulberry leaf Silkworm

A Comparative Study of Closure of Tympanic Membrane Perforation between Chemical Cauterization and Fat Plug Myringoplasty

在线全文

学校读者我要写书评

暂无评论

International Journal of Otolaryngology and Head & Neck Surgery 2013年第6期2卷 248-252页

作者： manabendra Debnath Swagata Khanna Department of ENT Gauhati Medical College & Hospital Guwahati India

The purpose of closure of small dry tympanic membrane perforations is to restore the continuity of the tympanic membrane in order to improve hearing and decrease the incidence of middle ear infections. Small and cost effective procedures like Chemical Cauterization and Fat Plug Myringoplasty have been found to be effective in healing small central perforations with significant hearing improvement. A study was carried out in 69 patients with central perforations in the Department of ENT, Gauhati Medical College & Hospital for the duration of 1 year from August 11 to July 12. Out of 69 patients, 36 underwent Chemical Cauterization and 33 Fat Plug Myringoplasty. Pre-and post-operative hearing assessments of each patient were done and statistically analyzed. The success rate was found to be 83.33% and 90.9% respectively. In both groups, there was statistically significant hearing improvement with a P value 0.01. From our study, it was found that the two procedures are simple, reliable and also lessened the morbidity of the patient. Thus we recommend the use of these two official procedures for the treatment of central perforations of tympanic membrane less than 5 mm.

关键词： Fat Plug Myringoplasty Chemical Cauterization Paper Patching Central Perforations

Methane hydrate formation and dissociation in synthetic seawater

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2012年第6期21卷 625-632页

作者： Vikash Kumar Saw Iqbal Ahmad Ajay mandal G.Udayabhanu Sukumar Laik Gas Hydrate Laboratory Department of Petroleum Engineering Department of Applied Chemistry Indian School of Mines

The formation and dissociation of methane gas hydrate at an interface between synthetic seawater （SSW） and methane gas have been experimentally investigated in the present work. The amount of gas consumed during hydrate formation has been calculated using the real gas equation. Induction time for the formation of hydrate is found to depend on the degree of subcooling. All the experiments were conducted in quiescent system with initial cell pressure of 11.14 MPa. Salinity effects on the onset pressure and temperature of hydrate formation are also observed. The dissociation enthalpies of methane hydrate in synthetic seawater were determined by Clausius-Clapeyron equation based on the measured phase equilibrium data. The dissociation data have been analyzed by existing models and compared with the reported data.

关键词： methane hydrate formation and dissociation total dissolved salt induction time subcooling

Removal efficiency of fluoride by novel Mg-Cr-Cl layered double hydroxide by batch process from water

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2013年第5期25卷 993-1000页

作者： Sandip mandal Swagatika Tripathy Tapswani Padhi Manoj Kumar Sahu Raj Kishore Patel Department of Chemistry National Institute of TechnologyRourkela 769 008India

The fluoride ion removal from aqueous solution using synthesized Mg-Cr-Cl layered double hydroxide has been ***-Cr-Cl was characterized by X-ray powder diffraction,Fourier-transform infrared,thermo-gravimetric analysis,differential thermal analysis,and scanning electron *** experiments were carried out in batch mode as a function of adsorption dosages,contact time,pH,and initial fluoride concentration to get optimum adsorption *** adsorption kinetic study showed that the adsorption process followed first order *** fluoride removal was 88.5% and 77.4% at pH 7 with an adsorbent dose of 0.6 g/100 mL solution and initial fluoride concentration of 10 mg/L and 100 mg/L,*** equilibrium was established at 40 *** experiment data were fitted well with Langmuir isotherm with R 2 = *** constants were also measured and concluded that the adsorption process was spontaneous and endothermic in *** removal percentage decreased slowly with increasing *** process is suitable for industrial *** regeneration of the material is not possible.

关键词： layered double hydroxide(LDH) fluoride adsorbents

Effect of blast inside tunnel on surrounding soil mass,tunnel lining,and superstructure for varying shapes of tunnels

在线全文

学校读者我要写书评

暂无评论

Underground Space 2021年第6期6卷 619-635页

作者： M.D.Goel Shivani Verma Jagriti mandal Sandeep Panchal Department of Applied Mechanics Visvesvaraya National Institute of Technology(VNIT)Nagpur 440010MaharashtraIndia Department of Mining Engineering Visvesvaraya National Institute of Technology(VNIT)Nagpur 440010MaharashtraIndia

In this study,a finite element(FE)analysis of shallow tunnels exposed to a blast inside the tunnel,with soil as surrounding medium and a structure at ground level,was *** ConWep program,developed by the US Army,was used to simulate blast loading using ABAQUS/Explicit■.Drucker-Prager(D-P)plasticity model,concrete damage plasticity(CDP),and Johnson-Cook(J-C)plasticity models were used to define the behavior of the soil,concrete,and reinforcement,*** analysis was carried out to compare the damages to the superstructure with variation in the cross-sectional shapes of the tunnel under internal blast *** tunnel shapes(circular,rectangular,and horseshoe cross-sections)were considered in the FE *** explosive of 100 kg TNT was located at the center of the cross-section of the *** response of the tunnel in terms of displacement and stress at critical locations was *** results showed that changes in the cross-section of the tunnel affect the stability of the tunnel,even when keeping all other factors *** was observed that the intensity of the stresses was the highest for a rectangular tunnel and lowest for a circular ***,it was also determined that the tunnel with a rectangular cross-section experienced the maximum displacement in the reinforced concrete(RC)lining compared with the horseshoe and circular *** displacement measured at critical structural members of the superstructure was found to be the highest for the tunnel with a rectangular cross-section and lowest for the tunnel with a circular cross-section.

关键词： Blast loading Numerical simulation ConWep Framed superstructure FE analysis ABAQUS/Explicit■

Slow-roll inflation in f(T,T)modified gravity

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2023年第12期47卷 162-168页

作者： Aaqid Bhat Sanjay mandal P.K.Sahoo Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad-500078India Faculty of Mathematics and Computer Science Transilvania UniversityIuliu Maniu Str.50500091 BrasovRomania

In this study, we explore the concept of cosmological inflation within the framework of the f(T, T)theory of gravity, where f is a general function of the torsion scalar T and the trace T of the energy-momentum *** is assumed that the conditions of slow-roll inflation are applicable in f(T, T) gravity. To determine different observables related to inflation, such as the tensor-to-scalar ratio r, scalar spectral index ns, spectral index αs, and tensor spectral index nt, the Hubble slow-roll parameters are utilized for a particular model of f(T, T). Lastly, an assessment is carried out to determine the feasibility of the models by conducting a numerical analysis of the parameters. The findings indicate that it is feasible to achieve compatibility with the observational measurements of slow-roll parameters by utilizing different values of the free parameters.

关键词： f(T,T)gravity early-time cosmology dark energy equation of state slow-roll inflation

Assessment of traditional knowledge of the antidiabetic plants of Darjeeling and Sikkim Himalayas in the context of recent phytochemical and pharmacological advances

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Medicine 2016年第5期14卷 336-358页

作者： Rakhi Chakraborty Swarnendu Roy Vivekananda mandal Department of Botany APC Roy Government College Department of Botany Kurseong College Plant Physiology and Biochemistry Laboratory Department of BotanyUniversity of Gour Banga

Darjeeling and Sikkim Himalayas, a part of Eastern Himalayan Hotspot, is characterized by its richness of plant diversity. Herbal medicine has been one of the most popular and reliable healing practices among the different ethnic groups of this region for ages. However, the lack of documentation practice by the traditional healers has led to obscurity regarding the efficacy of herbal medicine among the present generation, though they have to depend on the same quite often. Meanwhile, several reviews have attempted to document the plants used for the treatment of diabetes from this region, but interestingly, very few research works can be obtained regarding the characterization of antidiabetic properties of the plants of this region. Therefore, it demands a better understanding of the potentiality of these plants in the purview of scientific evidence. This review article reports 55 such plant species which have been reported to be frequently used in the treatment of hyperglycemia and our objective was to validate the potentiality of the plants in the light of recent phytochemical and pharmacological researches being carried out Iocallv or elsewhere.

关键词： hyperglycemia antidiabetics antihyperglycemics phytochemicals pharmacological processes herbal medicine

Microbial mat-related structures shared by both siliciclastic and carbonate formations

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2016年第3期5卷 278-291页

作者： Subir Sarkar Adrita Choudhuri Sunipa mandal Patrick G. Eriksson Department of Geological Sciences Jadavpur University Kolkata 700032 India Department of Geology University of Pretoria Pretoria 0002 South Africa

Microbiota has always been the dominant life form, records of which are preserved in delicate forms within siticiclastic rocks. More pronounced record in the form of stromatotites possibly obscured the fact that many of the same delicate structures may be recognizable within carbonate rocks too. The Neo- proterozoic Bhander Limestone in central India bears many such structures that are quintessentially similar to microbial mat-related structures reported from the Paleoproterozoic Chorhat Sandstone preserved within the same, Vindhyan Basin. Extensive microscopic, ultramicroscopic, and geochemical studies address the appre- hension that such bedding plane structures in carbonate rocks could be merely weathering products. Trapping, binding and stabilitization of sediment by microbial mats are atl evident. Preferred pyritization along the inferred, predefined microbial mats confirmed on the basis of EPMA （Electron Probe Microanalysis） results, and the enhanced carbon content along these mats layers and within suspected mat chips associated with them, are revealing. Raman spectroscopy, indeed, evinces enhanced kerogen content within both mats and mat chips. Interestingly, these microbial mat layers are recognized selectively within the lower of the two tiers of the Bhander Limestone. The lagoonal carbonate of the lower tier of the Bhander Limestone is muddy and contains a substantial proportion of silt-sized quartz grains that possibly impeded stromatolite growth. Stromatolites abound in the wave agitated upper tier of the Bhander Limestone which is dominated by oosparite. This paper provides evidence that the delicate microbial mat-related structures reported so far only from siticictastic rocks can *** be recognized within carbonate formations, and hopes to stimulate the search for additional such features, more preferably within carbonates originated in shallow and quiet water.

关键词： Microbiat mat-retated structures Bhander timestone Chorhat sandstone Kerogen Preferredpyritization Impeded stromatotite ~rowth

Source apportionment of PM10 in Delhi, India using PCA/APCS, UNMIX and PMF

在线全文

学校读者我要写书评

暂无评论

Particuology 2018年第2期16卷 107-118页

作者： Srishti Jain S.K. Sharma T.K. mandal Mohit Saxena Environmental Sciences and Biomedical Metrology Division CSIR-National Physical Laboratory Dr. K. S. Krishnan Road New Delhi 110 012 India Academy of Scientific and Innovative Research (AcSIR) CSIR-National Physical Laboratory campus New Delhi 110 012 India

Source apportionment of particulate matter （PM10） measurements taken in Delhi, India between January 2013 and June 2014 was carried out using two receptor models, principal component analysis with absolute principal component scores （PCA/APCS） and UNMIX. The results were compared with previous estimates generated using the positive matrix factorization （PMF） receptor model to investigate each model＇s source-apportioning capability. All models used the PM10 chemical composition （organic carbon （OC）, elemental carbon （EC）, water soluble inorganic ions （WSIC）, and trace elements） for source apportionment. The average PM10 concentration during the study period was 249.7±103.9 μg/m3 （range： 61.4-584.8 μg/m3）. The UNMIX model resolved five sources （soil dust （SD）, vehicular emissions （VE）, secondary aerosols （SA）, a mixed source of biomass burning （BB） and sea salt （SS）, and industrial emissions （IE））. The PCA/APCS model also resolved five sources, two of which also included mixed sources （SD, VE, SD＋SS, （SA＋BB＋SS） and 1E）. The PMF analysis differentiated seven individual sources （SD, VE, SA, BB, SS, IE, and fossil fuel combustion （FFC））. All models identified the main sources contributing to PM10 emissions and reconfirmed that VE, SA, BB, and SD were the dominant contributors in Delhi.

关键词： Receptor model PCA/APCS UNMIX PMF Source apportionment