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Electronic Resource

THEORY FOR THE BIPOLE-DIPOLE METHOD OF RESISTIVITY SOUNDING (1980)

DAS, U.C. ; VERMA, SAURABH K.

Oxford, UK : Blackwell Publishing Ltd

Geophysical prospecting 28 (1980), S. 0

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ISSN: 1365-2478

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Geosciences , Physics

Notes: A theory for the bipole-dipole method of resistivity sounding is developed. Bipole-dipole apparent resistivities are related to Schlumberger apparent resistivities at two spacings. The theory can also be used to compute exact dipole-dipole apparent resistivity curves providing an improvement over the existing techniques which involve far field approximations. A comparison of bipole-dipole and dipole-dipole systems reveals the similarity between the two. However, the resolution of the bipole-dipole system depends on the azimuth angle. The flexibility of the theoretical expressions lead to a generalized field scheme independent of the bipolar or dipolar nature of the current source.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1365-2478.1980.tb01227.x

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Efficacy of anti-VEGF in the treatment of choroidal neovascular membrane secondary to pattern dystrophy simulating fundus flavimaculatus (2019)

Nangia, P ; Shah, D ; Saurabh, K ; [et al.]

German Medical Science GMS Publishing House; Düsseldorf

In: GMS Ophthalmology Cases; VOL: 9; DOC21 /20190618/

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Publication Date: 2019-06-19

Description: Pattern dystrophies are a group of inherited disorders of the retinal pigment epithelium. A 44-year-old female came with loss of vision in her right eye. The fundus of both eyes showed flecks in the posterior pole with a CNVM in the right eye. FFA and SD OCT confirmed the presence of CNVM. The patient underwent treatment with anti-VEGF injection. Post treatment, the vision improved with a reduction in subretinal fluid along with a scarring CNVM. To conclude, we report an extremely rare case of PDSFF associated CNVM and its favourable response to anti-VEGF injection.

Subject(s): ddc: 610

Language: English

Type: article

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GERMAN MEDICAL SCIENCE

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An unusual presentation of macular telangiectasia type 2 with a large pigment deposit (2021)

Goel, S ; Nangia, P ; Rijey, AJ ; [et al.]

German Medical Science GMS Publishing House; Düsseldorf

In: GMS Ophthalmology Cases; VOL: 11; DOC03 /20210128/

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Publication Date: 2021-01-29

Description: Macular telangiectasia type 2 (MacTel) is a bilateral retinal disease that seems to be limited to the juxtafoveal region of the macula. We herein report an unusual presentation of MacTel with a large pigment deposit at the macula. Fundus of the right eye showed a large pigment deposit at the macula and right-angled venule. The left eye fundus showed a grayish discoloration due to subretinal fibrosis, dark pigment clumps and right-angled venule in the macula. Lesions were highlighted on multicolor imaging and blue reflectance imaging. Spectral domain optical coherence tomography (SD-OCT) of both eyes showed hyperreflectivity on the inner aspect of the retina corresponding to the area of pigment clumping.

Subject(s): macular telangiectasia type 2 ; blue light reflectance ; MacTel ; ddc: 610

Language: English

Type: article

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GERMAN MEDICAL SCIENCE

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Multicolour imaging signatures to diagnose concurrent macular telangiectasia type 2 and macular branch retinal vein occlusion (2019)

Schouten, I ; Goel, S ; Saurabh, K ; [et al.]

German Medical Science GMS Publishing House; Düsseldorf

In: GMS Ophthalmology Cases; VOL: 9; DOC36 /20191120/

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Publication Date: 2019-11-21

Description: Concurrent macular telangiectasia type 2 (MacTel) and branch retinal vein occlusion (BRVO) have not been described before and can pose a diagnostic dilemma. The current report highlights the role of multicolour (MC) imaging and blue reflectance (BR) imaging in diagnosing this multi-pathology. A 60-year-old male presented with diminution of vision in the right eye. BR imaging showed parafoveal hyperreflectance, characteristic of MacTel, and hyperreflective parafoveal retinal vessels indicating vascular changes in RVO. MC imaging, particularly the BR component is a promising tool to aide in the diagnosis of concurrent MacTel and BRVO, guiding treatment decisions and prognosticating treatment outcomes.

Subject(s): multicolour imaging ; blue reflectance imaging ; macular telangiectasia type II ; branch retinal vein occlusion ; ddc: 610

Language: English

Type: article

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Multimodal imaging of angioid streaks (2020)

Goel, S ; Gupta, I ; Mishra, S ; [et al.]

German Medical Science GMS Publishing House; Düsseldorf

In: GMS Ophthalmology Cases; VOL: 10; DOC38 /20200826/

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Publication Date: 2020-08-27

Description: Angioid streaks (AS) are irregular crack-like dehiscences in Bruch's membrane that are often associated with atrophic degeneration of the overlying retinal pigment epithelium. We herein report multimodal imaging of AS. Multicolor imaging highlighted AS in dark orange color. AS were better visualized in infrared reflectance as compared to green reflectance and blue reflectance. Peau d'orange appearance was seen as alternating dark and bright patches on color fundus photography with corresponding hyporeflective and hyperreflective patches on infrared reflectance. Comet lesions showed increased signal on infrared reflectance and hyperautofluorescence. Multicolor imaging is a non-invasive imaging modality which helps in clearly delineating these lesions.

Subject(s): angioid streaks ; multicolor imaging ; comet lesions ; ddc: 610

Language: English

Type: article

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Multimodal imaging in a case of bilateral astrocytic hamartoma with retinitis pigmentosa (2023)

Goel, S ; Das, D ; Saurabh, K ; [et al.]

German Medical Science GMS Publishing House; Düsseldorf

In: GMS Ophthalmology Cases; VOL: 13; DOC01 /20230130/

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Publication Date: 2023-01-31

Description: Astrocytic hamartoma is a benign glial tumor. It may be associated with tuberous sclerosis and can also be found incidentally on retinal examination as an isolated presentation. Here, we describe multimodal imaging characteristics of astrocytic hamartoma in a patient with retinitis pigmentosa. Spectral domain optical coherence tomography of both eyes showed moth-eaten optically empty spaces and hyperreflective dots along with foveal thinning. Multicolor image highlighted mulberry appearance of the lesion with green shift signifying elevated lesion. In infrared reflectance, lesion was hyporeflective with its margins well delineated. Green reflectance and blue reflectance highlighted calcification as multiple hyperreflective dots. Autofluorescence showed typical hyperautofluorescence.

Subject(s): astrocytic hamartoma ; multicolor imaging ; retinitis pigmentosa ; ddc: 610

Language: English

Type: article

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Atomic Scale Dynamics Drive Brain-like Avalanches in Percolating Nanostructured Networks (2020)

Pike, Matthew D. ; Bose, Saurabh K. ; Mallinson, Joshua B. ; [et al.]

American Chemical Society (ACS)

In: Nano Letters. 2020; 20(5): 3935-3942. Published 2020 Apr 29. doi: 10.1021/acs.nanolett.0c01096.

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Publication Date: 2020-04-29

Print ISSN: 1530-6984

Electronic ISSN: 1530-6992

Topics: Chemistry and Pharmacology , Physics

Published by American Chemical Society (ACS)

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Effect of ethanolic extract of Solanum virginianum Linn. on neuropathic pain using chronic constriction injury rat model and molecular docking studies (2020)

Verma, Sonia ; Kuhad, Anurag ; Bhandari, Ranjana ; [et al.]

Springer

In: Naunyn-Schmiedeberg's Archives of Pharmacology. 2020; 393(9): 1715-1728. Published 2020 May 09. doi: 10.1007/s00210-020-01872-8.

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Publication Date: 2020-05-09

Print ISSN: 0028-1298

Electronic ISSN: 1432-1912

Topics: Medicine

Published by Springer

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Wastewater Sample Site Selection to Estimate Geographically Resolved Community Prevalence of COVID‐19: A Sampling Protocol Perspective (2021)

Yeager, R. ; Holm, R. H. ; Saurabh, K. ; [et al.]

American Geophysical Union

In: GeoHealth. 2021; 5(7): Published 2021 Jun 29. doi: 10.1029/2021gh000420.

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Publication Date: 2021-06-29

Electronic ISSN: 2471-1403

Topics: Geosciences , Medicine

Published by American Geophysical Union

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