液中レーザーアブレーション法で作製した2Dナノ材料とその複合材料の光電気的および光化学的特性の研究

Synthesis of In2Se3 nanocubes fabricated by laser ablation under DI water and its Field electron emission properties as well as the carrier dynamics were investigated successfully for the application of high current density cold cathode material. The morphological characterization carried out using field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) reveal that the nano-cubes have an average size of 70 nm. The X-ray diffraction and Raman analysis clearly imply the formation of pure and crystalline In2Se3 phase only, without any impurity phases, despite the laser ablation being carried out in aqueous medium. A superior FE property characterized by lower values of turn-on and threshold fields as compared to In2Se3 nanowires emitter and ability to deliver very large current density ~2656 μA/cm2 by applying the field of 9.7 V/μm. Transient absorption spectra reveals there are no deep trap levels, the electrons in nanocubes can be regards as mobile carriers through the hopping process and travel long distance in the absence of holes. Carrier dynamics and photocatalytic performance of novel In2Se3/ZnO/Au-nanoparticle ternary composite system is investigated. The ternary photocatalytic system was fabricated using hydrothermal and laser ablation technique. The structural and physical characteristics have been studied by SEM, TEM, ultraviolet-visible (UV–Vis) spectrophotometry, and micro-Raman spectroscopy. The photocatalytic activity of the nanocomposites was estimated through the photocatalytic degradation utilizing organic dye of methylene blue in an aqueous solution. Results suggested that the ternary composite showed better photocatalytic performance compared with the pristine and binary composites. Production of few layers graphene from graphite is fabricated by UV laser scanning method. Morphological, structural and optical properties were investigated by TEM, HRTEM, UV-Vis spectroscopy and Micro-Raman spectroscopy. The surface modification of graphite under different liquid environment was investigated by optical laser microscope. After laser scanning the holes in graphite surface becomes dipper and less wide. The laser scanning process is most effective process to remove the layers of the graphite plate. Dips and hill are modified after laser scanning

AN EFFICIENT MICROWAVE ASSISTED MULTICOMPONENT SYNTHESIS OF SOME 7-AMINO-3-(SUBSTITUTED PHENYL)-5-(SUBSTITUTED PHENYL)-[1,2,4]TRIAZOLO[4,3A]PYRIMIDINE-6-CARBONITRILE DERIVATIVES

A series of 7-amino-3-(substituted phenyl)-5-(substituted phenyl)-[1,2,4]triazolo [4,3a] pyrimidine-6-carbonitrile derivatives were synthesized from 4-amino-2-hydroxy (OR mercapto)-6-(substituted phenyl)-pyrimidine-5-carbonitrile, hydrazine hydrate and aromatic aldehydes. The derivatives were obtained in good yields by the microwave-assisted one-pot protocol in very short reaction time. The synthesized compounds were studied for QSAR by subjecting to a prediction of biological activities applying computer programme PASS. It is found that 7-Amino-3-(4-chloro-phenyl)-5-(2,4-dichloro-phenyl)-[1,2,4]triazolo[4,3-a]pyrimidine-6-carbonitrile is a promising anticonvulsant agent; which can be synthesized by an efficient, promising, and green synthetic method with high yield

PHARMACOLOGICAL POTENTIALS OF PYRIMIDINE DERIVATIVE: A REVIEW

The chemistry of pyrimidine derivatives plays an important role in the field of drugs, agriculture chemicals and many biological processes. The chemistry of pyrimidine is a provoking field. In recent decades, a large number of pharmacological studies has been done on pyrimidine & there derivative. But still more research is required in order to necessity the biological compounds.  Numerous methods for the synthesis of pyrimidine and also their diverse reaction generate an enormous scope in the field of medicinal chemistry. The utility of pyrimidines as synthon for various biologically active compounds has given impetus to these studies.  The pyrimidine derivatives show various biological activities including antitubercular, antioxidant, anti-inflammatory, anticonvulsant, antimicrobial, antibacterial, antiplasmodial, antifungal, anticancer, and analgesic activity. This article aims to review the recent works on pyrimidine derivatives together with the biological potential during the past years.Keywords: Pyrimidine, Pharmacological studies, Anticancer, Antitubercula

Adrenal Myelolipoma, Cholelithiasis and Calcified Spleen: Retrospective Diagnosis of Sickle Cell Anemia Using a Novel Triad of Abdominal Imaging Findings

Sickle cell anemia is an inherited abnormality of the globin chain with very high prevalence in the Indian subcontinent. A significant proportion of these patients present late in life and are at a risk of complications like acute chest syndrome and painful episodes till a definitive diagnosis is reached and appropriate treatment is started . We report a novel triad of abdominal imaging findings which is not reported in literature until now and which may suggest a diagnosis of sickle cell anemia in retrospect. Patients with this triad of abdominal findings should be suspected to have an underlying hemoglobinopathy and should be referred for further hematological workup. Although in our case the patient was diagnosed to have sickle cell anemia depending on the abnormal morphology of red cells and hemoglobin electrophoresis, it should be remembered that this triad of findings may be seen in other hemoglobinopathies which induce a state of chronic anemia. Key words: sickle cell anemia, adrenal myelolipoma, gall stones, calcified spleen

Review of Recommendation on Location Based Services

In every Era “Location” is a strong component of “Mobility” Location based services (LBS) are services offered using mobile phone by taking mobile’s geographical location. The proposed system is providing location based services and offers with respect to user interest . Vendors are allowed to post and edit an advertisement for users. The system contains various modules such as advertising , Social program, Tourist place, Parking place, Emergency calls etc. The system uses apriori algorithm for mining frequent ratings from user. This information is used to provide popularity of location. It also provides user’s feedback, ranking based suggestion in secured manner. The purpose of this system is to notify the user based on their preferences and their interest in the particular area and notify them using android application. This will lead to lower advertising costs and expenditures also save the time of user for finding the located area of ads with help of GPS

Toxicity and bioaccumulation of heavy metals in spinach (spinacia oleracea) grown in a controlled environment

The impact of heavy metal toxicity on the shoot and root lengths, total protein, fiber characteristics, moisture content and nutrient composition of spinach (Spinacia oleracea) was evaluated. Plants were grown in pots containing soil and treated with different concentrations (mg/kg) of lead (Pb; 300, 400 and 500), cadmium (Cd; 0.5, 1 and 1.5) and zinc (Zn; 250, 500, and 700) as well as mixtures of Cd and Pb (0.5/300, 1/400, 1.5/500), Cd and Zn (0.5/250, 1/500, 1.5/700), and Pb and Zn (300/250, 400/500, 500/700). Soil contaminated by long-term irrigation with wastewater containing heavy metals was simulated. An increase in concentrations of heavy metals both individually and as mixtures significantly (p < 0.05) reduced the growth parameters and nutrient contents of S. oleracea. The uptake patterns of heavy metals in mixtures showed antagonistic impacts on each other. The toxicities of the mixtures Cd and Pb, Cd and Zn as well as Pb and Zn were higher than those observed in separate heavy metal applications but less than their additive sums. The toxicity caused by individual heavy metals was the highest for Cd followed by Pb and Zn. The highest toxicity was observed in plants grown in soil contaminated by Cd and Pb

EEG Based Brain Computer Interfacing for Hand Assistant System Using Wavelet Transform

Robots have been of great use to mankind for several years. In situation where human body fails to operate as per the need robot’s functions in those situations quite efficiently. Electroencephalogram (EEG) controlled hand assistant makes use of EEG signals and Brain Computer Interface (BCI). EEG signals are obtained from the brain using Emotiv Insight headset, after which processing and features extraction of the signals is performed and then conditioning of signals is done as it is a low amplitude signal with additive noise. Signals processing is done on the analog signal by using wavelet transform. Wavelet transform will help to extract information from the analog signal. Then the signals are assigned with the signatures to perform the dedicated task Filtered signal is given to analog pins of Arduino Uno. With the help of inbuilt ADC available on Arduino Uno, Digital Data is also made available on the digital pins. Then through MATLAB access Arduino board. In near future if it gets similar kind of input it will understand exactly what operation to perform. Further the Robotic hand assistant can be operated as we want