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Plant diversity at Chilapatta Reserve Forest of Terai Duars in subhumid tropical foothills of Indian Eastern Himalayas

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Journal of Forestry Research 2014年第3期25卷 591-596页

作者： gopal Shukla Rajib Biswas A. P. Das Sumit Chakravarty Department of Forestry Uttar Banga Krishi Viswavidyalaya Pundibari-736165 (Cooch Behar) West Bengal India Department of Botany University of North Bengal

From March 2007 to March 2009 we quantified plant diversity at Chilapatta Reserve Forest in Terai Duars in the Indian eastern Himala-yas. We sampled stratified random nested quadrats. Species richness was 311, representing 167 genera and 81 families. The species diversity index and concentration of dominance of the forest were 2.20 and 0.0072, respectively. Shannon-Wiener index and evenness indices were 4.77 and 1.44, respectively. The Importance Value Index （IVI） of species ranged from 0.13 to 37.94. The estimated diversity indices indicated heterogene-ity of the forest in its composition, structure, function and dynamics. Rich forest plant diversity supports the need for continued conservation of tropical forests.

关键词： Terai Duars phyto-sociology plant diversity diversity indices

Pulmonary infarct masquerading as community-acquired pneumonia in the COVID-19 scenario: A case report

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World Journal of Respirology 2024年第1期13卷 1-6页

作者： K K Mujeeb Rahman gopal Durgeshwar Prasanta R Mohapatra Manoj Kumar Panigrahi Siladitya Mahanty Pulmonary Critical Care and Sleep Medicine All India Institute of Medical SciencesBhubaneswarBhubaneswar 751019India Department of Radiodiagnosis All India Institute of Medical SciencesBhubaneswar 751019India

BACKGROUND Pulmonary embolism(PE)requires a high degree of clinical suspicion for its diagnosis and can mimic pneumonia due to its clinical,radiological,and laboratory ***-existence of PE and pneumonia can also occur,which is surprisingly more common than *** SUMMARY Here,we report a case of a young male who initially presented during the peak of the coronavirus disease 2019 pandemic with features of *** was kept under observation and was later diagnosed and treated for a right main pulmonary artery embolism without any identifiable source of *** PE and pneumonia share common clinical,radiological,and laboratory findings that may delay the diagnosis of *** disproportionate to the extent of radiological involvement could be an indicator of an underlying PE.

关键词： Pneumonia Pulmonary embolism Deep vein thrombosis Pulmonary infarct Case report

Micropropagation protocol for Salvadora oleoides

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Journal of Forestry Research 2019年第1期30卷 87-93页

作者： Ravindra Kumar Raoof Ahmad Najar Kunj Bihari Gupta Ram gopal Saini Department of Biochemistry and Microbial Sciences School of Basic and Applied Sciences Central University of Punjab Department of Plant Sciences School of Basic and Applied Sciences Central University of Punjab Centre for Interdisciplinary Biomedical Research Adesh University

Salvadora oleoides Decne. is a pharmaceutically important plant. Owing to poor seed formation, viability and, germination, and to anthropogenic disturbances, this species is on the verge of extinction. A reproducible micropropagation protocol to increase the population through tissue culture has been standardized and the results are reported here. Callus tissues were initiated from young leaves and stem explants. Leaf calluses proliferated with 1.5 mg/L BAP and 0.9 mg/L 2, 4-D with additives and continuous slow proliferation up to 15 weeks on 0.5 mg/L BAP and additives with 200 mg/L activated *** shoot initiation took place from stem node explants after 12 days; 4–5 shoots per node were produced in 30 days. Shoot clumps elongated and grew further on MS media supplemented with 2 mg/L BAP, 0.2 mg/L NAA and additives, which generated 20–23 shoots. The elongated shoots induced tap roots with 4 mg/L NAA and200 mg/L activated charcoal in 12 days. In vitro raised plants produced secondary roots when transferred to pots containing vermiculite maintained at 28–35 ℃. The plantlets successfully acclimatised in pots containing soil in natural conditions.

关键词： Salvadora oleoides Endangered species Micropropagation Explants Calluses Acclimatize

Compton scattering studies and electronic properties of cerium

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Journal of Rare Earths 2011年第8期29卷 804-809页

作者： gopal Choudhary Veera Raykar Alpa Dashora Jagrati Sahariya B. L. Ahuja Department of Physics University College of Science M. L. Sukhadia University

Experimental electron momentum density of γ-Ce was measured at an intermediate resolution （0.38 a.u.） using 20 Ci 137Cs Compton spectrometer. The experiment was compared with the first ever theoretical Compton profiles computed using spin polarized relativistic Korringa-Kohn-Rostoker （SPR-KKR） method within atomic sphere approximation; and linear combination of atomic orbitals （LCAO） within generalised gradient approximation （GGA） and recently developed second order generalised gradient approximation （SOGGA）. It was seen that the Compton profile derived from LCAO with GGA and SOGGA schemes gave a reasonable agreement with the experimental Compton line shape. Theoretical anisotropies in Compton profiles derived along [100], [110] and [111] directions were explained in terms of degenerate states in the energy bands.

关键词： X-ray scattering rare earth metals and alloys density functional theory

High-harmonic generation from spin-polarised defects in solids

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npj Computational Materials 2020年第1期6卷 1583-1591页

作者： M.S.Mrudul Nicolas Tancogne-Dejean Angel Rubio gopal Dixit Department of Physics Indian Institute of Technology BombayPowaiMumbai 400076India Max Planck Institute for the Structure and Dynamics of Matter Luruper Chaussee 14922761 HamburgGermany Nano-Bio Spectroscopy Group and ETSF Departamento de Fisica de MaterialesUniversidad del País Vasco UPV/EHU20018 San SebastiánSpain

The generation of high-order harmonics in gases enabled to probe the attosecond electron dynamics in atoms and molecules with unprecedented *** these techniques to solids,which were originally developed for atomic and molecular gases,requires a fundamental understanding of the physics that has been partially addressed ***,we employ timedependent density-functional theory to investigate how the electron dynamics resulting in high-harmonic emission in monolayer hexagonal boron nitride is affected by the presence of *** show how these realistic spin-polarised defects modify the harmonic emission and demonstrate that important differences exist between harmonics from a pristine solid and a defected *** particular,we found that the different spin channels are affected differently by the presence of the spin-polarised point ***,the localisation of the wavefunction,the geometry of the defect,and the electron–electron interaction are all crucial ingredients to describe high-harmonic generation in defected solids.

关键词： harmonic solids harmonics

A Note on the Operator Equation Generalizing the Notion of Slant Hankel Operators

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Analysis in Theory and Applications 2016年第4期32卷 387-395页

作者： gopal Datt Ritu Aggarwal Department of Mathematics PGDAV College University of Delhi Department of Mathematics University of Delhi

The operator equation λMz^-X = XMzk, for k ≥ 2,λ∈ C, is completely solved. Further, some algebraic and spectral properties of the solutions of the equation are discussed.

关键词： Hankel operators slant Hankel operators generalized slant Toeplitz operators generalized slant Toeplitz operators spectrum of an operator.

Loading Detection and Number Estimation of an Electron Plasma in a Penning Trap

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Plasma Science and Technology 2009年第5期11卷 521-528页

作者： K.T.SATYAJIT Anita GUPTA gopal JOSHI Shyam MOHAN Pushpa RAO Sharath ANANTHAMURTHY Department of Physics Bangalore UniversityJnanabharati Campus Spectroscopy Division Bhabha Atomic Research Centre Electronics Division Bhabha Atomic Research Centre

A quadrupole Penning trap for spectroscopy and investigations of non-neutral plasmas was designed and built. In this work we provide details of the trap design and a discussion of a simple design and procedure for convenient electron loading from an aligned filament. Electrons from thermionic emission which form a low-energy diffuse beam are trapped in weak magnetic fields. They are detected through a non-destructive electronic detection scheme, the details of which are discussed. The detection signal is diminished when the electron beam energy is increased while the electron flux is kept constant. This is explained by considering the energy shift in the distribution function of electrons emitted from the filament and entering the trap. We present a calculation of the number of trapped electrons from the shape of the detection signal. This calculation, based on a model of a driven damped harmonic oscillator to describe the axial motion of the electrons, compares favourably with the numbers obtained by measurements of the space charge induced shift in the trap potential.

关键词： Penning trap non-neutral plasma

COVID-19 pandemic:Building organisational flexibility to scale transplant programs

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World Journal of Transplantation 2020年第10期10卷 277-282页

作者： Jeevan Prakash gopal Vassilios E Papalois Imperial College Renal and Transplant Center Hammersmith HospitalImperial College Healthcare NHS TrustLondon W120HSUnited Kingdom Imperial College Renal and Transplant Center Department of Surgery and CancerHammersmith HospitalImperial College Healthcare NHS TrustLondon W120HSUnited Kingdom

The prevailing coronavirus disease 2019 pandemic has challenged our lives in an unprecedented *** pandemic has had a significant impact on transplantation *** logistics of travel restrictions,stretching of available resources,unclear risk of infection in immunosuppressed transplant recipients,and evolving guidelines on testing and transplantation are some of the factors that have unfavourably influenced transplant *** must begin to build organisational flexibility in order to restart transplantation so that we can be mindful stewards of organ donation and sincere advocates for our *** a culture of honesty and transparency(with patients,families,colleagues,societies,and authorities),keeping the channels of communication open,working in collaboration with others(at local,regional,national,and international levels),and not restarting without rethinking and appraising all elements of our practice,are the main underlying principles to increase the flexibility.

关键词： Organisational flexibility Clinical decision making COVID-19 Organ donation Care delivery Transplantation

Operation makalu air crash:influence of cognitive and human factors on decision-making

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Forensic Sciences Research 2022年第4期7卷 803-807页

作者： Samarika Dahal gopal Kumar Chaudhary Nitin Kumar Agrawal Department of Dentistry Institute of MedicineKathmanduNepal Department of Forensic Medicine Maharajgunj Medical CampusMaharajgunjKathmanduNepal

Two onboard crew members lost their lives in the fatal Makalu Air Cessna Grand Caravan 208B domestic cargo flight crash on May 16,*** Disaster Victim Identification(DVI)procedure comprises external examination,photography,DNAcollection,fingerprint collection,postmortem examination,antemortem information collection from the family members,and *** major challenge of this operation was dealing with cognitive *** antemortem dental information of one of the deceased was revealed to the forensic experts just before the postmortem *** influenced the testing *** was a tendency to neglect the complete dental examination presuming the identification was ***,during a thorough examination,the forensic odontologist realised that the initial decision was ***,there are few experience-based resources available to resolve cognitive bias *** authors begin by summarising complicated operations in which they have been involved,followed by a discussion of the key sources of cognitive bias along with the solution to resolve these issues in DVI preparedness planning.

关键词： Forensic sciences disaster cognitive bias dental identification mortuary Nepal