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Geoscience Frontiers 2019年第3期10卷 1113-1124页

作者： Triveni Gogoi rima chatterjee Department of Applied Geophysics Indian Institute of Technology (Indian School of Mines)

Estimation of petrophysical parameters is an important issue of any reservoirs. Porosity, volume of shale and water saturation has been evaluated for reservoirs of Upper Assam basin, located in northeastern India from well log and seismic data. Absolute acoustic impedance(AAI) and relative acoustic impedance(RAI) are generated from model based inversion of 2-D post-stack seismic data. The top of geological formation, sand reservoirs, shale layers and discontinuities at faults are detected in RAI section under the study area. Tipam Sandstone(TS) and Barail Arenaceous Sandstone(BAS) are the main reservoirs,delineated from the logs of available wells and RAI section. Porosity section is obtained using porosity wavelet and porosity reflectivity from post-stack seismic data. Two multilayered feed forward neural network(MLFN) models are created with inputs: AAI, porosity, density and shear impedance and outputs: volume of shale and water saturation with single hidden layer. The estimated average porosity in TS and BAS reservoir varies from 30% to 36% and 18% to 30% respectively. The volume of shale and water saturation ranges from 10% to 30% and 20% to 60% in TS reservoir and 28% to 30% and 23% to 55% in BAS reservoir respectively.

关键词： Upper Assam basin Relative acoustic impedance Porosity Volume of shale Water saturation Neural network model

Application of Cross-Plotting Techniques for Delineation of Coal and Non-Coal Litho-Units from Well Logs

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Geomaterials 2012年第4期2卷 94-104页

作者： rima chatterjee Suman Paul Department of Applied Geophysics Indian School of Mines Dhanbad India

Well log responses can be used to delineate coal and carbonaceous shale from other non-potential litho-units by cross-plotting technique. The cross-plotting between gamma ray and density had been carried out for 15 wells of Jharia coalfield, India. Through these different cross-plots across the study area, different litho-units like;coal, shaly coal, carbonaceous shale, shale, sand/sandstone, shaly sand, jhama and igneous intrusion (mica peridotite) have been identified. Clustering of points for different lithologies in the above cross-plots indicate that the different trends with marginal overlap between carbonaceous shale/shaly coal and shale as well as shaly sand and shale. The coal horizons are mostly overlain and underlain by shale or sandstone. Cross-plot analysis indicates the various coal lithologies which will play important role in CBM exploration and exploitation strategy.

关键词： Jharia Coalfield Cross-Plot P-Wave Impedance CBM Reservoir

利用叠前地震数据估算印度KG盆地含水合物沉积物的孔隙度

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海洋地质 2018年第2期34卷 1-12页

作者： rima chatterjee Dip Kumar Singha Maheswar Ojha 徐华宁(译) 万玲(校对) 范广慧(校对) 不详青岛海洋地质研究所

利用叠后地震数据估算孔隙度有几个经典的统计方法可用,本文研究是直接利用叠前地震数据估算孔隙度。我们估算孔隙度反射率而不是将得到的声阻抗转化为孔隙度。我们将这一方法应用于KG盆地的二维地震数据,通过角度道集叠加同时反演直接... 详细信息

利用叠后地震数据估算孔隙度有几个经典的统计方法可用,本文研究是直接利用叠前地震数据估算孔隙度。我们估算孔隙度反射率而不是将得到的声阻抗转化为孔隙度。我们将这一方法应用于KG盆地的二维地震数据,通过角度道集叠加同时反演直接获得孔隙度。在1 059~1 224 m深度区间内,根据密度测井估算的总孔隙度变化范围为49%-85%。这一值将用作含水合物沉积物的二维叠前地震数据孔隙度反演的输入。孔隙度成像结果表明存在两个明显的含水合物带,并与基于裂缝充填型气体水合物的解释结果非常吻合。在二维多道地震剖面的1 450-1 615 ms时间段,含水合物沉积物和BSR之下未固结沉积物的孔隙度在50%-70%之间变化,含水的砂/粘土沉积物的孔隙度值大约是60%-70%。本文研究表明,在利用地震数据直接计算孔隙度时,我们所提出的方法计算速度快、可靠性高。

关键词： KG盆地孔隙度叠前地震反演

Enhancing the efficiency of nitrogen removing bacterial population to a wide range of C:N ratio(1.5:1 to 14:1)for simultaneous C&N removal

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Frontiers of Environmental Science & Engineering 2022年第8期16卷 149-163页

作者： Shaswati Saha Rohan Gupta Shradhanjali Sethi rima Biswas Academy of Scientific and Innovative Research(AcSIR) CSIR-Human Resource Development Centre(CSIR-HRDC)Ghaziabad Uttar Pradesh-201002India Wastewater Technology Division CSIR-National Environmental Engineering Research InstituteNagpur Maharashtra-440020India

High C:N ratio in the wastewater limits biological nitrogen removal(BNR),especially in anammox based *** present study attempts to improve the COD tolerance of the BNR process by associating methanogens with nitrogen removing bacterial(NRB)*** new microbial system coined as‘Methammox’,was investigated for simultaneous removal of COD(C)and ammonia(N)at C:N ratio 1.5:1 to 14:*** ammonia removal rate(11.5 mg N/g VSS/d)and the COD removal rates(70.6 mg O/g VSS/d)of Methammox was close to that of the NRB(11.1 mg N/g VSS/d)and the methanogenic populations(77.9 mg O/g VSS/d),*** activities established that these two populations existed simultaneously and independently in‘Methammox’.Further studies in biofilm reactor fetched a balanced COD and ammonia removal(55%–60%)at a low C:N ratio(£2:1)and high C:N ratio(≥9:1).The population abundance of methanogens was reasonably constant,but the nitrogen removal shifted from mixotrophy to heterotrophy as the C:N ratio shifted from low(C:N£2:1)to high(C:N≥9:1).The reduced autotrophic NRB(ammonia-and nitrite-oxidizing bacteria and Anammox)population at a high C:N ratio was compensated by the fermentative group that could carry out denitrification *** functional plasticity of the Methammox system to adjust to a broad C:N ratio opens new frontiers in biological nitrogen removal of high COD containing wastewaters.

关键词： Methanogens Biological Nitrogen Removal(BNR) Simultaneous Methammox C:N ratio

Synthesis of N-fused dithia and dibenzihomoporphyrins

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Organic Chemistry Frontiers 2022年第6期9卷 1580-1588页

作者： rima Sengupta Prosenjit Isar Mangalampalli Ravikanth Department of Chemistry Indian Institute of Technology BombayPowaiMumbai 400076India

N-Fused dithia and dibenzi homoporphyrins have been synthesized using a[2+2]approach by condensing one equivalent of appropriate dithienyl/di p-phenylene ethene diol with one equivalent of N-confused dipyrromethane in CH_(2)Cl_(2) under mild acid catalysed *** X-ray structure obtainedfor the N-fused dibenzi homoporphyrin revealed that the fused tripentacyclic ring was planar and wastilted by an angle of 11.35°whereas the p-phenylene moieties were highly deviated by angles of 48.70°and 50.93°from the mean plane defined by five meso carbon *** NMR and absorption featuressuggested the non-aromatic nature of both N-fused dithia and dibenzi *** DFT studiesrevealed that the N-fused dithia homoporphyrin was highly distorted with one thiophene ring facingoutside the macrocyclic *** spectral features of both N-fused dithia and dibenzi homoporphyrinswere supported by TD-DFT studies.

关键词： conditions cavity fused

Probing the liquid-solid transition of petroleum macromolecules with terahertz time-domain spectroscopy

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Science China(Physics,Mechanics & Astronomy) 2018年第10期61卷 85-87页

作者： RenHe Tian rima Bao Lu Tian Schoolof Public Management Northwest University Xi 'an 710127China Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of Petroleum Beijing 102249 China School of Physics Northwest University Xi'an 710069 China

The formation of solid deposits or petroleum waxes con- stitutes a constantly recurring problem in petroleum macromolecule transportation. To solve this problem, representing and predicting the thermodynamic behavior of macromolecular products such as paraffin waxes and lubricating greases is essential. In this regard, terahertz time- domain spectroscopy （THz-TDS） has recently received great attention with the expectation that it will provide new insights into complex macromolecular systems such as skeletal vibrations, side-chain vibration, and the vibration of hydrocarbon bonds. In this paper, THz-TDS was used as a fast method for the detection of phase transition without the need for sample manipulation. Thus, the optical properties of

关键词：大分子光谱学时间域石油 THz-TDS 固体液体探查

How Gender Shaped Science and Education:A History of Nutritional Sciences in the 19th and 20th Centuries

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Frontiers of Education in China 2010年第2期5卷 177-185页

作者： rima D.Apple School of Human Ecology University of Wisconsin-MadisonMadison WI 53706USA

Many societies view the world as composed of two distinct and complementary spheres:the female(domestic)sphere and the male(public)*** science was part of the male sphere,women were inhibited from pursuing a career in scientific ***,the more limited female sphere often found within university departments of home economics provided women some space to establish their own research *** the lens of the history of nutrition,we can see how this universe of separate spheres had,and continues to have,both negative and positive effects for women in science.

关键词： nutrition home economics higher education women's education

Lighting preferences in office spaces concerning the indoor thermal environment

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Frontiers of Architectural Research 2021年第3期10卷 639-651页

作者： Maryam Fakhari rima Fayaz Somayeh Asadi Energy and Architecture Section Department of ArchitectureUniversity of ArtTehranIran The Pennsylvania State University University ParkPAUSA

The accurate prediction of the visual comfort zone in an indoor environment is difficult as it depends on many *** is especially the case for large compact urban areas in which the density and shadow from neighboring buildings can limit the accessible daylighting in indoor *** paper investigates the satisfaction range for illuminance regarding indoor air temperature in office buildings and the significant parameters affecting this range in six office buildings in Tehran,*** comfort has been evaluated by a subjective survey(509 total responses)and field *** questionnaires were filled out in 146 and 109 rooms in summer and winter,*** results show that the illuminance should not be less than 550 lx,while illuminance between 600 and 650 lx provides the highest satisfaction *** satisfaction with lighting level is affected by individual parameters such as age,type of activity,and environmental parameters such as window orientation,external obscurations,and season.A relationship was observed between lighting level satisfaction and thermal condition acceptance,and the overall comfort depends more on thermal conditions than the lighting level.

关键词： Lighting preferences Daylighting Artificial lighting Illumination comfort

Applying terahertz time-domain spectroscopy to probe the evolution of kerogen in close pyrolysis systems

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Science China(Physics,Mechanics & Astronomy) 2013年第8期56卷 1603-1605页

作者： BAO rima WU ShiXiang ZHAO Kun ZHENG LunJu XU ChangHong College of Science China University of Petroleum Petroleum Exploration and Production Research Institute China Petroleum and Chemical Corporation Exploration and Production Research Institute China Petroleum and Chemical Corporation

Terahertz time-domain spectroscopy (THz-TDS) has been used to probe the evolutionary paths of kerogen in selected black mudstone. The evolutionary regime of kerogens (for instance, the immaturity, early maturity, middle maturity, late maturity, and catagenesis stages) can be indicated by the absorption coefficient in the THz region. The present study of identification based on THz-TDS was in good agreement with programmed pyrolysis experiments and suggests that THz technology can act as a nondestructive, contact-free tool for probing the ability to generate hydrocarbons from kerogens.

关键词： evolution kerogen terahertz spectroscopy

Less than 6 GHz resolution THz spectroscopy of water vapor

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Science China(Technological Sciences) 2015年第12期58卷 2104-2109页

作者： ZHAN HongLei SUN ShiNing ZHAO Kun LENG WenXiu BAO rima XIAO LiZhi ZHANG ZhenWei State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing Key Laboratory of Optical Detection Technology for Oil and Gas China University of Petroleum Department of Physics Capital Normal University

The application of terahertz（THz） technique in many fields like petroleum industry requires the high resolution and multifunction to realize the precise detection of different materials. In this study water vapor in atmosphere was scanned with shortand long-path THz spectrometers with different scan ranges. The full width at half maximum of the THz characteristic lines in long-path system reached less than 7 GHz and that in short achieved -5.5 GHz, indicating that the THz spectroscopy of water vapor can be used to calibrate THz devices. THz systems with right scan ranges could be a promising selection for the identification of solid, liquid and gaseous materials with very similar structures due to the high resolution. The research demonstrates that the multifunctional THz test can be realized through the balance of resolution and sampling space in many fields, such as oil-gas industry.

关键词： terahertz water vapor resolution full width at half maximum