Two types of graphene nanoribbons: (a) potassium-split nanoribbons (GNRs), and (b) oxidative unzipped chemically converted (CCGNRs) were investigated for their magnetic properties using the combination static magnetization electron spin resonance measurements. The two ribbons possess remarkably different properties. While low temperature ferromagnet-like feature is observed in both ribbons, such room persists only ribbons. GNRs show negative exchange bias, but CCGNRs exhibit a 'positive...

We report on the heteroepitaxial growth of ferroelectric (FE)-antiferromagnetic (AFM) BiFeO3 (BFO) ferromagnetic La0.7Sr0.3MnO3 (LSMO), integrated Si(100) using pulsed laser deposition via domain matching epitaxy paradigm. The BFO/LSMO films were epitaxially grown by introducing epitaxial layers SrTiO3/MgO/TiN. X-ray diffraction, scanning electron microscopy, high-resolution transmission photo absorption spectroscopy, and atomic force microscopy employed to fully characterize samples....

The appearance of ferromagnetic order up to 400 K upon KrF (248 nm) laser irradiation is reported in un-doped SrTiO3 (STO) single crystal. high resolution x-ray photo emission spectroscopy (XPS) measurements reveal a strong shift Sr-, Ti-, and O-related peaks. X-ray diffraction annealed STO does not signature either secondary magnetic or amorphous phases. 300 X-band (∼9.543 GHz) angle-dependent electron paramagnetic resonance (EPR) showed no evidence additional peaks irradiation. XPS EPR...

Electron spin resonance study of unzipped graphene nanoribbons (GNRs) reveals a specific carbon-related signal, denoted GC, at g=2.0032, attributed to GNRs periphery centers. The signal is observed be readily quenched upon O2 adsorption, which appears fully reversible room temperature vacuum treatment. Its depassivation behavior, from 130 K onward, well described by first-order kinetics, characterized the dissociation energy 0.58±0.04 eV spread 0.11±0.02 eV. GC not sensitive other gases,...

Adaptation to changing environmental conditions is a driver of plant diversification. Elevational gradients offer unique opportunity for investigating adaptation range climatic conditions. The use specialized metabolites as volatile and phenolic compounds major in plants, affecting their reproductive success survival by attracting pollinators protecting themselves from herbivores other stressors. wormseed Artemisia brevifolia can be found across multiple elevations the Western Himalayas,...

Electron spin resonance (ESR) investigation of graphene nanoribbons (GNRs) prepared through longitudinal unzipping multi-walled carbon nanotubes indicates the presence C-related dangling bond centers, exhibiting paramagnetic features. ESR signal broadening from pristine or oxidized GNRs is explained in terms unresolved hyperfine structure, and case reduced GNRs, can be due to enhancement conductivity upon reduction. The dynamics observed line width-temperature data reflect a variable range...

Ureaplasma urealyticum respiratory tract colonization in preterm infants has been associated with a high incidence of pneumonia and the development bronchopulmonary dysplasia. However, study this human pathogen hampered by absence animal models. We have developed first juvenile mouse model characterized histopathology during month following inoculation. C3H/HeN mice were inoculated intratracheally mouse-adapted clinical isolate (biovar 2) or sham 10B broth. Culture lung homogenates PCR DNA...

Electron paramagnetic resonance (EPR) studies and magnetic measurements were carried out on single crystals of multiferroic DyMnO3 in hexagonal as well orthorhombic structures. The interesting effect strontium dilution the frustrated antiferromagnetism is also probed using EPR. line shapes are fitted to broad Lorentzian case pure modified Dysonian Dy0.5Sr0.5MnO3. linewidth, integrated intensity, geff derived from signals analyzed a function temperature. results magnetization corroborate with...

India is the seventh largest producer of coffee with 395,000 tons exports that earn 10 billion US dollars annually. Two varieties are grown in India, Coffea arabica (arabica) and canephora (robusta). Xylotrechus quadripes , commonly known as Coffee White Stem Borer (CWSB), a major pest arabica, causing yearly crop damage 17–40 million dollars. Management strategies, over 100 years development, have provided successful, yet inconsistent solutions due to differences local climate, elevation,...

Terpene synthases (TPSs) have diverse biological functions in plants. Though the roles of TPSs herbivore defense are well established many plant species, their role bacterial has been scarce and is emerging. Through functional genomics, here we report planta potato (Solanum tuberosum) terpene synthase (StTPS18) defense. Expression StTPS18 was highest leaves induced response to Pseudomonas syringae methyl jasmonate treatments. The recombinant exhibited bona fide (E,E)-farnesol activity...

A rare case of a segmental small intestinal (jejunal) lipomatosis is described. 33-year-old male was admitted with clinical diagnosis an acute obstruction. plain erect abdominal x-ray showed multiple air-fluid levels. On exploratory laparotomy, jejunojejunal intussusception found secondary to submucosal lipomatosis. This treated by resection and anastomosis, which resulted in complete cure. Here we present this review the relevant literature.

In this study, we examined the impact of iron doping on structural, chemical, and magnetic properties ceria (Ce1-xFexO2). Samples were produced in triplicate through a coprecipitation approach forced hydrolysis synthesis that yielded consistently sized nanocrystals using three different cerium precursors: chloride, ammonium nitrate, nitrate. Particles characterized by x ray diffraction (XRD), photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), paramagnetic resonance...

We report on the low temperature electron spin resonance (ESR) properties of ultra-small (0.45 nm) double walled carbon nanotubes (DWCNTs) embedded in zeolite nanochannels. An isotropic ESR signal is observed at g(c) = 2.002 77 with density (S 1/2) ∼ 10(19) g(-1), which suggested to originate from related point defects DWCNTs. Measurements line width and intensity as a function indicate that spins are localized nature opposed conduction type electrons large diameter CNTs. The results...

Magnetic structure evolution of multiferroic hexagonal YMn1−xFexO3 (x = 0, 0.05, and 0.1) has been studied by carrying out detailed temperature-dependent neutron diffraction at zero 5 T fields. Thermodynamic data confirm antiferromagnetic ordering TN in all the compositions. Our sub-TN results assign magnetic pure YMnO3 to Γ1 irreducible representation. Over perturbative-doping range, changes via + Γ2 for YMn0.95Fe0.05O3 on YMn0.9Fe0.1O3, as maiden compositional analogue spin-reorientation;...

Terpene synthases (TPSs) produce a variety of terpenoids that play numerous functional roles in primary and secondary metabolism, as well ecological interactions. Here, we report the characterization an inducible potato TPS gene encoding bulnesol/elemol synthase ( StBUS/ELS ). The expression leaves was significantly induced response to both bacterial Pseudomonas syringae ) fungal Alternaria solani infection methyl jasmonate treatment, indicating its role defense. exhibited highest followed...

A multi-frequency electron spin resonance (ESR) study provides evidence for the occurrence of low-temperature ferromagnetic/spin-glass behavior in aligned arrays sub-nanometer single-walled carbon nanotubes confined zeolite nanochannels, owing to sp2-type non-bonding carbon-associated localized states with density ≈3×1019/g. Features related much anticipated conduction ESR are not detected. In paramagnetic phase, linewidth is found be weakly dependent on microwave frequency.

The dynamics of magnetic hysteresis, including the training effect and field sweep rate dependence exchange bias, is experimentally investigated in exchange-coupled potassium split graphene nanoribbons (GNRs). We find that, at low rate, pronounced absolute present over a large number cycles. This reflected gradual decrease bias with sequential cycling. However, high above 0.5 T/min, not prominent. With increase average value grows found to follow power-law behavior. response variation linked...