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| 1 | Determination of blast-induced ground vibration equations for rocks using mechanical and geological properties显示文摘In the recent decades,effects of blast loads on natural and man-made structures have gained considerable attention due to increase in threat from various man-made activities.Site-specific empirical relationships for calculation of blast-induced vibration parameters like peak particle velocity(PPV) and peak particle displacement(PPD) are commonly used for estimation of blast loads in design.However,these relationships are not able to consider the variation in rock parameters and uncertainty of in situ conditions.In this paper,a total of 1089 published blast data of various researchers in different rock sites have been collected and used to propose generalized empirical model for PPV by considering the effects of rock parameters like unit weight,rock quality designation(RQD),geological strength index(GSI),and uniaxial compressive strength(UCS).The proposed PPV model has a good correlation coefficient and hence it can be directly used in prediction of blast-induced vibrations in rocks.Standard errors and coefficient of correlations of the predicted blast-induced vibration parameters are obtained with respect to the observed field data.The proposed empirical model for PPV has also been compared with the empirical models available for blast vibrations predictions given by other researchers and found to be in good agreement with specific cases. | Ranjan Kumar Deepankar Choudhury Kapilesh Bhargava | 2016 | Journal of Rock Mechanics and Geotechnical Engineering2016，8，3： | 11 |
| 2 | Seismic passive earth resistance using modified pseudo-dynamic method显示文摘In earthquake prone areas,understanding of the seismic passive earth resistance is very important for the design of different geotechnical earth retaining structures.In this study,the limit equilibrium method is used for estimation of critical seismic passive earth resistance for an inclined wall supporting horizontal cohesionless backfill.A composite failure surface is considered in the present analysis.Seismic forces are computed assuming the backfill soil as a viscoelastic material overlying a rigid stratum and the rigid stratum is subjected to a harmonic shaking.The present method satisfies the boundary conditions.The amplification of acceleration depends on the properties of the backfill soil and on the characteristics of the input motion.The acceleration distribution along the depth of the backfill is found to be nonlinear in nature.The present study shows that the horizontal and vertical acceleration distribution in the backfill soil is not always in-phase for the critical value of the seismic passive earth pressure coefficient.The effect of different parameters on the seismic passive earth pressure is studied in detail.A comparison of the present method with other theories is also presented,which shows the merits of the present study. | Anindya Pain Deepankar Choudhury S. K. Bhattacharyya | 2017 | Earthquake Engineering and Engineering Vibration2017，16，2： | 2 |
| 3 | Developmen t and optimization of mat rix table t for controlled delivery of nicorandih An in vitro study Journal of Molecu larand C ellularCardiology显示文摘 | Agrawal S Deepankar S Dipanka r IC | 2001 | 33(6) :A22001，33，6： | 1 |
| 4 | Influence of rooftop telecommunication tower on set back-step back building resting on different ground slopes显示文摘In the hilly region due to scarcity of the plain area, buildings like set back-step back are more often used and also as a big surge in the telecommunication industries, rooftop tower adaptation is very common story nowadays. In the present study an analogy has been drawn to find out the influence of the rooftop telecommunication tower on the setback-step back building resting on ground at 20° and 30° slopes. A dynamic analysis has been performed and compared on the 4 legged angled section telecommunication tower which is located on the roof top of set back-step back building by varying positions of tower with the existing host structure built up on ground slope of 20° and 30° in both directions(X and Y). | Amit Thakur Deepankar Kumar Ashish Surender Kumar Verma | 2019 | Earthquake Engineering and Engineering Vibration2019，18，2： | 1 |
| 5 | New approach for estimation of static and seismic active earth pressure显示文摘 | DEEPANKAR C SHAILESH S | 2006 | Geotechnical and Geological Engineering2006，24，1： | 1 |
| 6 | Seismic rotational displacement of gravity walls by pseudo-dynamic method: Passive case显示文摘 | Deepankar Choudhury Sanjay Nimbalkar | 2006 | Soil Dynamics and Earthquake Engineering2006，，3： | 1 |
| 7 | Sliding stability and seismic design of retaining wall by pseudo-dynamic method for passive case显示文摘 | Sanjay Nimbalkar Deepankar Choudhury | 2006 | Soil Dynamics and Earthquake Engineering2006，，6： | 1 |
| 8 | Computations of uplift capacity of pile anchors in cohesionless soil显示文摘 | V. B. Deshmukh D. M. Dewaikar Deepankar Choudhury | 2010 | Acta Geotechnica2010，，2： | 1 |
| 9 | Fracture char- acterization and dynamic modeling in a brownfield carbonate reser- voir 显示文摘 | Biswas Deepankar Lark Site and Cron James W | 2009 | SPE Annual Technical Conference and Exhibition2009，2，： | 1 |
| 10 | Development and optimization of matrix tablet for controlled delivery of nicorandil: An in vitro study Journal of Molecular and Cellular Cardiology 显示文摘 | Agrawal S Deepankar S Dipankar IC | 2001 | 33 (6): A22001，33，6： | 1 |
| 11 | Subba Rao Seismic bearing capacity of shallow strip footings显示文摘 | Deepankar Choudhury and Kanakapura S | 2005 | Geotechnicaland Geological Engineering2005，23，： | 1 |
| 12 | Seismic bearing capacity of shallow strip footings 显示文摘 | DEEPANKAR C KANAKAPURA S S SUBBA RAO | 2005 | Geotechnical and Geological Engineering2005，23，： | 1 |
| 13 | Stability of waterfront retaining wall subjected to pseudo-static earthquake forces显示文摘 | Deepankar Choudhury Syed Mohd. Ahmad | 2007 | Ocean Engineering2007，，14： | 1 |
| 14 | Sliding stability of non-vertical waterfront retaining wall supporting inclined backfill subjec- ted to pseudo-dynamic earthquake forces 显示文摘 | Debarghya C Deepankar C | 2014 | Applied Ocean Research2014，47，： | 1 |
| 15 | Associated risk factors for post-COVID-19 mucormycosis at a tertiary care centre: A cross-sectional study显示文摘Objective:To explore risk factors of mucormycosis in COVID-19 recovered patients.Methods:A total of 101 patients,who were diagnosed with mucormycosis after recovery from COVID-19 and admitted to the Indira Gandhi Institute of Medical Sciences,Patna,a tertiary care hospital in India,were included in the study.The presenting clinical features and associated risk factors were assessed and analyzed subsequently.Results:Of 101,68(67.3%)were males,and 33(32.7%)were females.A total of 89(88.1%)patients were between 46 and 65 years old.The most common subtypes were rhino-ocular(61.4%),followed by paranasal sinuses(16.8%),rhino-ocular cerebral(16.8%),ocular(3.0%),and pulmonary(2.0%).Diabetes mellitus was present in 71% of cases of mucormycosis as co-morbidities.A total of 76.2% of patients were given systemic corticosteroids in oral or intravenous form during COVID-19 treatment.Severe COVID-19 was present in 45.5% of patients with mucormycosis,while the moderate infection was present in 35.6% of mucormycosis.Most patients had gap between the onset of mucormycosis and COVID-19<15 d.Conclusions:A lethal confluence of uncontrolled diabetes mellitus,corticosteroid usage,and COVID-19 could cause a dramatic rise in mucormycosis.So,clinicians must be aware of these risk factors in patients suffering as well as recovering from COVID-19 to prevent mucormycosis. | Praphull Deepankar Govind Kumar Jyoti Kr Dinkar Rishav Mittal | 2022 | Journal of Acute Disease2022，11，4： | 0 |
| 16 | Dynamic analysis of buried pipeline with and without barrier system subjected to underground detonation显示文摘Failure of pipe networks due to blast loads resulting from terrorist attacks or construction facilities, may cause economic loss, environmental pollution, source of firing or even it may lead to a disaster. The present work develops a closed-form solution of buried pipe with barrier system subjected to subsurface detonation. The solution is derived based on the concept of double-beam system. Euler Bernoulli's beams are used to simulate the buried pipe and the barrier system. Soil is idealized as viscoelastic foundation along with shear interaction between discrete Winkler springs(advanced soil model). The finite SineFourier transform is employed to solve the coupled partial differential equations. The solution is validated with past studies. A parametric study is conducted to investigate the influence of TNT charge weight, pipe material, damping ratio and TNT offset on the response of buried pipe with and without barrier system. Further a statistical analysis is carried out to get the significant soil and pipe input parameters. It is perceived that peak pipe displacements for both the cases(with and without barrier) are increases with increasing the weight of TNT charge and decreases with increasing the damping ratio and TNT offset. The deformation of pipe also varies with pipe material. Pipe safety against blast loads can be ensured by providing suitable barrier layer. The present study can be utilized in preliminary design stage as an alternative to expensive numerical analysis or field study. | Chaidul Haque Chaudhuri Deepankar Choudhury | 2023 | Defence Technology(防务技术)2023，29，11： | 0 |
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