65 research outputs found
Morphology and phylogeny of four new Lactarius species from Himalayan India
Four new species of Lactarius are described from Himalayan India. Lactarius olivaceoglutinus, L. pyriodorus, and L. yumthangensis belong to L. subg. Piperites and L. indochrysorrheus is closely related to some representatives of L. subg. Russularia. An ITS based phylogeny confirms the phylogenetic placement of the four new species, although the monophyly of neither Lactarius subg. Piperites nor L. subg. Russularia can be confirmed. The ITS data also suggest that the Indian species are closely related to some European and American species
SCAR: Power Side-Channel Analysis at RTL-Level
Power side-channel attacks exploit the dynamic power consumption of
cryptographic operations to leak sensitive information of encryption hardware.
Therefore, it is necessary to conduct power side-channel analysis for assessing
the susceptibility of cryptographic systems and mitigating potential risks.
Existing power side-channel analysis primarily focuses on post-silicon
implementations, which are inflexible in addressing design flaws, leading to
costly and time-consuming post-fabrication design re-spins. Hence, pre-silicon
power side-channel analysis is required for early detection of vulnerabilities
to improve design robustness. In this paper, we introduce SCAR, a novel
pre-silicon power side-channel analysis framework based on Graph Neural
Networks (GNN). SCAR converts register-transfer level (RTL) designs of
encryption hardware into control-data flow graphs and use that to detect the
design modules susceptible to side-channel leakage. Furthermore, we incorporate
a deep learning-based explainer in SCAR to generate quantifiable and
human-accessible explanation of our detection and localization decisions. We
have also developed a fortification component as a part of SCAR that uses
large-language models (LLM) to automatically generate and insert additional
design code at the localized zone to shore up the side-channel leakage. When
evaluated on popular encryption algorithms like AES, RSA, and PRESENT, and
postquantum cryptography algorithms like Saber and CRYSTALS-Kyber, SCAR,
achieves up to 94.49% localization accuracy, 100% precision, and 90.48% recall.
Additionally, through explainability analysis, SCAR reduces features for GNN
model training by 57% while maintaining comparable accuracy. We believe that
SCAR will transform the security-critical hardware design cycle, resulting in
faster design closure at a reduced design cost
Amanita tullossiana, a new species, and two new records of Amanita section Lepidella from north-western Himalaya, India
Amanita tullossiana, a new species of Amanita [subgenus Lepidella] section Lepidella from India is described. The species is characterised by its ash grey to brownish-grey pileus covered with dark grey to greyish-black universal veil remnants, the upper part of its rooting stipe base covered by several rows of recurved scales, broadly ellipsoid to ellipsoid basidiospores, absence of basidial clamp connections and pileal remnants of universal veil comprising abundant, disordered inflated cells intermixed with scattered filamentous hyphae. Molecular phylogenetic analysis and morphology both support the association of A. tullossiana with species of Bas’ stirps Cinereoconia – A. cinereoconia and A. griseoverrucosa. Two species, A. griseoverrucosa and A. virgineoides are reported here as new records for India
Fungal biodiversity profiles 21–30
The authors describe ten new taxa for science using mostly both morphological and molecular data. In Basidiomycota, descriptions are provided for Botryobasidium fusisporum sp. nov., B. triangulosporum sp. nov., Cantharellus hydnoides sp. nov. and Hydnum aerostatisporum sp. nov. in Cantharellales; Lactarius rahjamalensis sp. nov. and Russula pseudoaurantiophylla sp. nov. in Russulales and for Mycena paraguayensis comb. nov. in Agaricales. In Ascomycota and hyphomycetes, descriptions are provided for Colletotrichurn eryngiicola sp. nov. (Glomerellales), Corynesporella indica sp. nov. (incertae sedis) and Repetophragma zygopetali sp. nov. (Microthyriales)
Fungal diversity notes 929–1035: taxonomic and phylogenetic contributions on genera and species of fungi
This article is the ninth in the series of Fungal Diversity Notes, where 107 taxa distributed in three phyla, nine classes, 31 orders and 57 families are described and illustrated. Taxa described in the present study include 12 new genera, 74 new species, three new combinations, two reference specimens, a re-circumscription of the epitype, and 15 records of sexualasexual morph connections, new hosts and new geographical distributions. Twelve new genera comprise Brunneofusispora, Brunneomurispora, Liua, Lonicericola, Neoeutypella, Paratrimmatostroma, Parazalerion, Proliferophorum, Pseudoastrosphaeriellopsis, Septomelanconiella, Velebitea and Vicosamyces. Seventy-four new species are Agaricus memnonius, A. langensis, Aleurodiscus patagonicus, Amanita flavoalba, A. subtropicana, Amphisphaeria mangrovei, Baorangia major, Bartalinia kunmingensis, Brunneofusispora sinensis, Brunneomurispora lonicerae, Capronia camelliaeyunnanensis, Clavulina thindii, Coniochaeta simbalensis, Conlarium thailandense, Coprinus trigonosporus, Liua muriformis, Cyphellophora filicis, Cytospora ulmicola, Dacrymyces invisibilis, Dictyocheirospora metroxylonis, Distoseptispora thysanolaenae, Emericellopsis koreana, Galiicola baoshanensis, Hygrocybe lucida, Hypoxylon teeravasati, Hyweljonesia indica, Keissleriella caraganae, Lactarius olivaceopallidus, Lactifluus midnapurensis, Lembosia brigadeirensis, Leptosphaeria urticae, Lonicericola hyaloseptispora, Lophiotrema mucilaginosis, Marasmiellus bicoloripes, Marasmius indojasminodorus, Micropeltis phetchaburiensis, Mucor orantomantidis, Murilentithecium lonicerae, Neobambusicola brunnea, Neoeutypella baoshanensis, Neoroussoella heveae, Neosetophoma lonicerae, Ophiobolus malleolus, Parabambusicola thysanolaenae, Paratrimmatostroma kunmingensis, Parazalerion indica, Penicillium dokdoense, Peroneutypa mangrovei, Phaeosphaeria cycadis, Phanerochaete australosanguinea, Plectosphaerella kunmingensis, Plenodomus artemisiae, P. lijiangensis, Proliferophorum thailandicum, Pseudoastrosphaeriellopsis kaveriana, Pseudohelicomyces menglunicus, Pseudoplagiostoma mangiferae, Robillarda mangiferae, Roussoella elaeicola, Russula choptae, R. uttarakhandia, Septomelanconiella thailandica, Spencermartinsia acericola, Sphaerellopsis isthmospora, Thozetella lithocarpi, Trechispora echinospora, Tremellochaete atlantica, Trichoderma koreanum, T. pinicola, T. rugulosum, Velebitea chrysotexta, Vicosamyces venturisporus, Wojnowiciella kunmingensis and Zopfiella indica. Three new combinations are Baorangia rufomaculata, Lanmaoa pallidorosea and Wojnowiciella rosicola. The reference specimens of Canalisporium kenyense and Tamsiniella labiosa are designated. The epitype of Sarcopeziza sicula is re-circumscribed based on cyto- and histochemical analyses. The sexual-asexual morph connection of Plenodomus sinensis is reported from ferns and Cirsium for the first time. In addition, the new host records and country records are Amanita altipes, A. melleialba, Amarenomyces dactylidis, Chaetosphaeria panamensis, Coniella vitis, Coprinopsis kubickae, Dothiorella sarmentorum, Leptobacillium leptobactrum var. calidus, Muyocopron lithocarpi, Neoroussoella solani, Periconia cortaderiae, Phragmocamarosporium hederae, Sphaerellopsis paraphysata and Sphaeropsis eucalypticola
Boletus rubripes Thiers, a New Record of Wild Mushroom from Sikkim (India)
Boletus rubripes is reported from India for the first time by comparing macro- and micromorphological details with the type and other descriptions. Conspecificity of the Indian material with the North American material is supported by illustrations and its relation to allied taxa is discussed
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Recognition in polymeric media: From molecular imprinting to soluble polymers
The application of polymeric media as sensors, drug delivery agents, chromatographic columns, enzyme mimics, and many other functions is driven by the ability of the polymer to participate in molecular recognition events. The polymer provides a three-dimensional local environment that surrounds the binding site, which is one of the major factors that govern the binding efficiency. The local environment plays a crucial role in both the solid and solution state and will be explored here. The design, synthesis, and characterization of molecularly imprinted polymers (MIPs), highly crosslinked polymers obtained in the presence of host-guest complexes, will be discussed. Using biologically inspired three-point hydrogen-bonding as the recognition motif, a fundamental study to characterize binding pre- and post-polymerization binding, guest molecule transport, and binding site heterogeneity will be presented. The fundamental understanding of the imprinting process obtained will be shown to be necessary for the development of real-time, highly selective MIP-based sensors. Using π-stacking, effective sensing for polychlorinated aromatic contaminants in water will be demonstrated. A modified strategy, surface-templated polymer films, provides an ideal platform for the real-time, selective detection of bacteria at environmentally relevant concentrations. In the solution state, living polymerization methodologies are utilized to systematically explore the factors (molecular weight, backbone composition, chain flexibility) that affect a soluble polymer\u27s ability to bind a guest molecule
Three new species of Lactarius (Russulaceae) from Sikkim, India
Since 2008, fungal explorations have been undertaken in a mycologically unexplored area: West district of Sikkim (India), located in the Esatern Himalaya. Three Lactarius species are proposed here as new taxa: Lactarius elaioviscidus, L. ermineus and L. byssaceus. Extended descriptions and illustrations are given; the taxonomic position and relation to allied species is discussed
New Species of Lactarius Subg. Plinthogalus and New Records of Lactifluus Subg. Gerardii (Russulaceae) from Sikkim, India
Lactarius subg. Plinthogalus (s.l.) was represented by thirteen taxa from the Indian subcontinent. In this paper, two taxa: Lactarius crenulatus, L. croceigalus are proposed and described as new species in Lactarius subg. Plinthogalus. From Lactifluus subg. Gerardii, two species, Lactifluus leae (new record for the Indian mycoflora) and L. ochrogalactus (reported earlier) are described for the first time with their macro- and micro-morphological details supported by illustrations. Comparisons with allied Asian taxa are also discussed
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