615 research outputs found
Integer Codes Correcting Single Adjacent Transposition Errors
No full textOne of the most common channel errors in molecular communication systems is a single adjacent transposition (SAT) error. It happens both due to molecular noise and due to the diffusive movement of molecules when some of them reach the receiver faster than others. In this paper, we propose a simple solution to this problem based on integer codes that can correct SAT errors. The proposed codes are less complex and more rate-efficient than existing codes of similar properties. In addition, the proposed codes use integer and lookup table operations, which makes them suitable for implementation on nano-controllers that will be embedded in future nano-implants.This is the peer-reviewed version of the article: Radonjić, Aleksandar, Pankaj Kumar Das, and Nabin Kumar Pokhrel. 2024. ‘Integer Codes Correcting Single Adjacent Transposition Errors’. IEEE Communications Letters, 1–1. [https://doi.org/10.1109/LCOMM.2024.3379493]
Correction: Corrigendum: Lipid-II Independent Antimicrobial Mechanism of Nisin Depends On Its Crowding And Degree Of Oligomerization
No full textScientific Reports 6: Article number: 37908; published online: 29 November 2016; updated: 10 February 2017. The original version of this Article contained an error in the spelling of the author Pankaj Ror which was incorrectly given as Pankaj Kumar. This has now been corrected in the PDF and HTML versions of the Article.</jats:p
Hard metal-matrix composite coating via laser cladding on engineered surfaces
Get PDFLaser surfacing is an important and necessary technology that can be used to repair, restore, and enhance the surface properties of parts, making them more durable, resistant, and efficient. The use of tungsten disulfide (WS2) in laser cladding is still in the development and research stage, but the properties and characteristics of WS2 make it a good candidate for laser cladding applications in industries where tribological systems, cutting tools, and thermal management are important. In this chapter, laser cladding of WS2 is carried out using a fiber laser of 400 W power. It is observed that a hard surface coating of WS2 was cladded to the substrate surface. The surface of the cladded surface is characterized in several ways to understand its properties and quality. Some common methods of characterizing a laser-cladded surface include microstructure analysis, hardness, wear testing, and chemical analysis. The microstructure of the cladded surface is analyzed using optical microscopy and scanning electron microscopy (SEM), to understand the grain size, phase composition, and morphology of the cladded material. The hardness and wear resistance of the cladded surface are measured using Vickers hardness testing and tribometer testing to understand the mechanical properties of the cladded material. The chemical composition of the cladded surface is analyzed using techniques of energy-dispersive X-ray spectroscopy (EDS) to understand the composition of the cladded material.</p
Correction of Periodic Random Errors by Cyclic Codes
No full textIn this brief communication, we investigate periodic random error and single error correction capability of cyclic codes by its minimum distance along with an upper bound on the total Hamming weight of all codewords.Pankaj Kumar Das, Correction of Periodic Random Errors by Cyclic Codes, J. Innovation Sciences and Sustainable Technologies, 3(1)(2023), 15 - 21, https://doie.org/10.0421/JISST.2023655085
Das Schicksal des großen Regens
Get PDFDer Klimawandel trifft die Menschen global ebenso wie regional. So erforscht Pankaj Kumar, Mitarbeiter am Climate-Service-Center und am Max-Planck-Institut für Meteorologie in Hamburg, das Wechselspiel aus Trockenzeit und Monsun in Indien. Er will herausfinden, wie es mit dem Wasserhaushalt künftig bestellt sein wird. Dabei hilft das Computerprogramm REMO, das Daniela Jacob und ihr Team am Hamburger Max-Planck-Institut entwickelt haben
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No full textNot AvailableApplication of Variational Mode Decomposition based on different Machine Learning models for univariate time series forecasting. For method details see (i) K. Dragomiretskiy and D. Zosso (2014) ; (ii) Pankaj Das (2020) <http:
//krishi.icar.gov.in/jspui/handle/123456789/44138>.Not Availabl
Lipase inactivation in Wheat Germ by Gamma Irradiation
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
Enzyme Inactivation by Gamma Irradiation
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
Gastrodia thilakapremae Atthanagoda, C. Bandara & Kumar. Voucher 2023, sp. nov.
No full text<i>Gastrodia thilakapremae</i> Atthanagoda, C.Bandara & Kumar <i>sp. nov.</i> (Figs. 1 F–K, 4 & 5) <p> <b>Type:—</b> SRI LANKA. Central Province, Kandy District, Kondagala in Loolkandura Estate, 26 May 2022, <i>AKAG12.2022</i> (holotype PDA!; isotype PDA!-spirit); Sabaragamuwa Province, Ratnapura District, Galwangediya, Eratne –Sri Pada trail, Samanala Nature Reserve, 10 June 2022, <i>AKAG13.2022</i> (paratype PDA!; PDA!-spirit).</p> <p> <b>Diagnosis:</b> <i>Gastrodia thilakapremae</i>, a Sri Lankan endemic, is not easy to differentiate from a Japan and Taiwan native <i>G. gracilis</i> Blume (1856: 174) as they look similar in various morphological features, however they are different on a closer look. <i>Gastrodia thilakapremae</i> has green flowers with green opaque petals; triangular floral bracts, 4.5–6 mm long; orange labellum (darker towards apex and fading towards base), length slightly shorter than column with anther cap, almost triangular to ovate in shape abruptly narrowing towards the apex with constrictions on the margins, lacking distinct longitudinal bands of intermittent warts towards the centre, with a pair of triangular lamellae on the centre between the constrictions; hypochile broad (> 2 mm wide) and orange on upper and white on the lower surface; epichile lower margin slightly flat; column with stelidia wings broadening from nearly at the base of the column till just below the apex of stelidia and capsules fusiform, 2.5–3.5 cm long. Whereas, <i>G. gracilis</i> has dull greenish-brown flowers with darker pale brown petals; floral bracts ovate or elliptic shaped, 2–4 mm long; labellum orange with white longitudinal bands before the margin on either side, length slightly longer than the column with anther cap, almost triangular but gradually narrowing towards apex lacking any constrictions on the margin; distinct 5 longitudinal divergent bands of intermittent warts running from base to the middle of the labellum, with a pair of ellipsoid lamellae towards the apex; hypochile narrow (<2 mm wide) and orange on both surfaces; lower margin of epichile raised up to fill the gap caused due to lack of wings on lower margin of the column; column with broadening of stelidia wings not starting from base but after 1/3 rd of the length from base and obovoid or ellipsoid capsules that are 2–2.3 cm long (see Fig. 6).</p> <p> <b>Terrestrial</b>, holomycoheterotrophic herbs, 55–75 cm tall. <b>Rhizome</b> tuberous, ellipsoid, 4–6 cm long, 1.0– 1.3 cm in diameter, sparse hairs dispersed along the gaps between closely placed membranous triangular scales emerging from the nodes. <b>Raceme</b> erect, peduncle 40–46 cm long, glabrous, pale brown or greyish-brown, with 8–10 membranous semi-transparent sheaths; sheaths tubular, pale brown, 5.5–7 mm long. <b>Inflorescence</b> erect with 4–6 flowers, rachis ca. 4–6 cm long. <b>Floral bracts</b> triangular, 4.5–6 mm, acute, dark brown, base surrounding the pedicel. <b>Pedicel</b> dull green-brown to dark brown, verrucose, ca. 4–6 mm long. <b>Flowers</b> resupinate, perianth tube formed by fusion of sepals and petals, apical end partially opened; perianth tube slightly arched downwards, nodding, 2.2–2.5 cm long, up to 1.6–1.8 cm wide, globose, outer surface dull green, verruculose; inner surface pale green; lobe of dorsal sepal broadly ovate, 9–10 × 6 mm, apex obtuse, slightly convex, fleshy, yellowish-green to pale green, margins entire; lobes of lateral sepals broadly ovate, 8–9 × 4.5–5.5 mm, obtuse, fleshy, margins entire, yellow-green on outside, pale green inside; petal lobes 2, orbicular with contracted base, curled, smaller than sepal lobes, 5.5 × 5 mm, obtuse, margin crenate, pale green; labellum adnate to column foot, ovate to rhomboid, 5.5–6.3 mm long, 2.3–4.5 mm wide, enclosed within the perianth tube, orange, longitudinally channeled underneath; epichile abruptly narrowing at the apex, 5.2–5.4 mm long, 3.5–4.5 mm wide, dark orange, apex yellow, irregularly crisped on the margin; hypochile contracted into a claw, ca. 0.6–0.8 mm long, 2.1–2.3 mm wide, pair of lamellae or ridge towards the apex; pair of globular, waxy calli at the base, 1.1–1.3 mm in diameter. <b>Column</b> erect, narrowly ovate to elliptic, 5–5.5 mm long, 3–3.2 mm wide, apex retuse, pale green-white with light brown colored on both sides, bearing stelidia on either sides and a short foot below; stelidia distinct, falcate, spread out, ca. 4.5 × 1.3 mm, apex acute with a pointed tip, base slightly angled, pale greenish; foot short, 1–1.2 mm long, brown-green; rostellum prominent; stigma located towards the base of the column on a raised, but inclined platform. <b>Anther cap</b> cucullate, ca. 2.2 mm in diameter; pollinia 2, clavate, ca. 2 mm long; ovary obconical, 3.5–3.8 mm long, ca. 2 mm wide, dark brown, verrucose, ribbed. <b>Capsule</b> erect, fusiform, verruculose, ca. 2.5–3.5 cm long, 0.7–0.9 cm wide, dark brown with darker stripes, borne on an elongated pedicel; pedicel with capsule up to 4–8 cm long, brown, slender and terete.</p> <p> <b>Phenology:—</b> Flowering and fruiting observed during May to December in separate subpopulations. Flowering season of the subpopulations in Samanala Nature Reserve show wide range than the other population in Loolkandura. Flowering and fruiting individuals were observed during May to November at the Samanala Nature Reserve in different years according to the field observations. The Loolkandura subpopulation flowered in December. However, flowering and fruiting individuals were observed simultaneously in same population.</p> <p> <b>Etymology:—</b> The specific epithet honors Mr. Atthanagoda Kankanamalage Thilakaprema, the second author’s father for his support and guidance.</p> <p> <b>Distribution:—</b> <i>Gastrodia thilakapremae</i> is endemic to Sri Lanka and occurs throughout sub-montane forest at Kondagala in Loolkandura Estate, Kandy District; in the sub-montane and montane forests of the Samanala Nature Reserve in Central Highlands of Sri Lanka at Galwangediya on Kuruwita–Eratne–Sri Pada trail and Mahagalthalawa on Moray Estate–Sri Pada trail in Ratnapura District (Fig. 7).</p> <p> <b>Habitat and ecology:—</b> This species is found on montane and sub-montane forests between 1500–2000 m a.s.l and under the shade of <i>Strobilanthes</i> (Acanthaceae) shrubs among the thick leaf litter. Mostly prefers partially open canopy and humus rich soil. Other notable members of Orchidaceae family sharing the same habitat were, <i>Liparis elliptica</i>, <i>Calanthe masuca</i>, <i>Zeuxine</i> sp. and <i>Oberonia</i> sp. in Samanala Nature Reserve. <i>Oberonia scyllae</i>, <i>Peristylus aristatus</i>, <i>Chiloschista fasciata</i> and <i>Phaius wallichii</i> in Kondagala, Loolkandura Estate.</p> <p> <b>Conservation status:—</b> <i>Gastrodia thilakapremae</i> occurs in both montane and sub-montane forests at 3 different sites in Sri Lanka, one in Kandy District, Central Province and two in Ratnapura District, Sabaragamuwa Province. This species was recorded from Kondagala in Loolkandura Estate in 2012 where it was seen in bloom regularly in 2016, 2018, 2019, 2020, 2021 and 2022 with 4, 6, 2, 11, 5 and 6 individuals respectively (Fig. 8). Two other subpopulations were found in 2020 from Galwangediya area, Eratne–Sri Pada trail and Mahagalthalawa, Moray Estate–Sri Pada trail in Samanala Nature Reserve and both of sites were revisited in 2022. The subpopulation in Galwangediya area, Eratne–Sri Pada trail consisted of 11 mature plants in 2020 and 16 in 2022. Mahagalthalawa subpopulation is the smallest among all with 4 individuals in 2020 and 3 in the following visit in 2022. The habitats of this species in Sri Pada are also threatened due to the clearance of banks and roadsides during the pilgrim season. The population of Kondagala in Loolkandura Estate is faintly protected with a good forest cover but, not safe at all with the human interactions. There is an inferred threat of decline in the quality of habitat. Hence, three sites are considered as three locations. This species may remain dormant with underground tubers, and hence, an optimistic estimate of less than 50 mature individuals has been inferred. The Area of Occupancy (AOO) and the Extent of Occurrence (EOO) were 12 km 2 and ~ 186 km 2 respectively according to GeoCAT (Bachman <i>et al</i>. 2011). Based on available information this species can be assessed as Critically Endangered (CR D) owing to extremely small population size following IUCN guidelines (IUCN 2022).</p> <p> <b>Taxonomic notes:—</b> <i>Gastrodia thilakapremae</i> is morphologically similar with the group of species in <i>Leptogastrodia</i> M.A.Clem & D.L.Jones (≡ <i>Gastrodia</i>), but differs from all other species by having 55–75 cm tall plant habit; 2.2–2.5 cm long, up to 1.6–1.8 cm wide, dull green color flowers with ovate to rhomboid, 5.5–6.3 mm long, 2.3–4.5 mm wide, orange color labellum and 2.5–3.5 cm long, fusiform capsules.</p>Published as part of <i>Bandara, Champika, Atthanagoda, Anusha Gayan, Bandara, Nadeesha Lewke & Kumar, Pankaj, 2023, The study of the tribe Gastrodieae (Orchidaceae, Epidendroideae) in Sri Lanka I: two new species of Gastrodia, pp. 115-130 in Phytotaxa 622 (2)</i> on pages 121-126, DOI: 10.11646/phytotaxa.622.2.2, <a href="http://zenodo.org/record/10084582">http://zenodo.org/record/10084582</a>
Recent advancements in microbial diversity /
No full textIncludes bibliographical references and index.Biodiversity of microbial life: Indian Himalayan region / Khushboo Dasauni and Tapan Kumar Nailwal -- Microbial endophytes of plants: diversity, benefits, and their interaction with host / Anwesha Gohain, Chowlani Manpoong, Boppa Linggi, Ratul Saikia, Surajit De Mandal -- A spotlight on the recent advances in bacterial plant diseases and their footprint on crop production / Tushar Joshi, Priyanka Sharma, Tanuja Joshi, Satish Chandra Pandey, Veni Pande, Anupam Pandey, Diksha Joshi, Priyanka Maiti, Mahesha Nand, Subhash Chandra -- Bacterial diseases of banana; detection, characterization, and control management / Thangjam Premabati and Surajit De Mandal -- Toward an enhanced understanding of plant growth promoting microbes for sustainable agriculture / Diksha Sati, Satish Chandra Pandey, Veni Pandea. Shobha Upretia, Vinita Gouria, Tushar Joshi, Saurabh Gangola, Prasenjit Debbarma, Anupam Pandey, Mukesh Samanta -- Multifaceted beneficial effects of plant growth promoting bacteria and rhizobium on legume production in hill agriculture / Anupam Pandy, Priyanka H. Tripathi, Satish Chandra Pandey, Tushar Joshi -- Role of rhizospheric microbial diversity in plant growth promotion in maintaining the sustainable agrosystem at high altitude regions / Jyoti Rawat, Nirmal Yadav and Veena Pande -- Microbes adapted to cold and their use as biofertilizers for mountainous regions / Geeta Bhandari -- Actinobacteria: diversity and biotechnological applications / Anwesha Gohain, Chowlani Manpoong, Ratul Saikia, Surajit De Mandal -- Quorum sensing: the microbial linguistic / Vikas Kumar and Jyoti Rawat -- Exploration of microbial communities of Indian hot springs and their potential biotechnological appliations / Sneha Bhandari and Tapan Kumar Nailwal -- Microbial diversity and functional potential in wetland ecosystems / Surajit De Mandal, Folguni Laskar, Amrita Kumari Panda, Rojita Mishra -- Effect of climate change on microbial diversity and its functional attributes / Pankaj Kumar Jain, Sumi Das Purkayastha, Surajit De Mandal, Ajit Kumar Passari, Rasiravathanahalli Kaveriyappan Govindarajan -- Spatial variation of the microbial diversity in the mangrove dominated Sundarban Forest of India / Tapti Sengupta and Abhijit Mitra -- Microbe assisted plant stress management / Purva Dubey, Vinay Kumar, Karthika Ponnusamy, Rajendra Sonwani, Anup Kumar Singh, Deep Chandra Suyal, Ravindra Soni -- Insect gut microbiome and its applications / Sathya Narayanan Govindarajulu, Krishnapriya M. Varier, Dheepthi Jayamurali, Wuling Liu, Juan Chen, Nivedita Manoharan, Yanmei Li, Babu Gajendran -- Diversity and the antimicrobial activity of vaginal lactobacilli: current status and future prospective / Sumi Das Purkayastha, Mrinal K. Bhattacharya, Himanshu K. Prasad, Surajit De Mandal -- Gut microbiota and brain development: a review / Krishnapriya M. Varier, Arpita Karandikar, Wuling Liu, Juan Chen, Yaacov Ben-David, Xiangchun Shen, Arulvasu Chinnasamy, Babu Gajendran -- Role of microbial communities in traditionally fermented foods and beverages in North East India / Indu Sharma and Sagolsem Yaiphathoi -- Metagenomics: applications of functional and structural approaches and meta-omics / Lokesh Kumar Tripathi and Tapan Kumar Nailwal -- Metagenomics: a vital source of information for modeling interaction networks in bacterial communities / Jithin S. Sunny and Lilly M. Saleena -- Metagenomics based approach to reveal the secrets of unculturable microbial diversity from aquatic environment / Pooja Arya and Ravindra -- Metagenomic-based approach to a comprehensive understanding of cave microbial diversity / Apirak Wiseschart and Kusol Pootanakit.Elsevie
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