Display omitted
•Gamma glycine (GG) crystal firstly grown from solvent of salicylic acid.•GG crystal is optically transparent up to 69% with impressive optical constant.•GG crystal offers SHG ...efficiency 2.12 (KDP) and 1.22 (ADP)•GG crystal exhibits violet colored emission centered at 361 nm.
The organic crystals with abundance of donor-acceptor moieties readily facilitate the mechanism of charge transfer which aids for grooming the nonlinear optical (NLO) effects and hence core investigation on glycine crystal is deliberately needed for visualizing its compatibility for frequency conversion device applications. In this communication the gamma glycine (GG) crystal has been firstly grown in presence of salicylic acid and priority is given to explore its optical properties. The structural parameters and space group of GG crystal has been confirmed by single crystal X-ray diffraction analysis. The qualitative analysis of GG crystal has been performed by means of fourier transform infrared spectroscopy. The color centered luminescence emission profile of GG crystal has been assessed by means of photoluminescence study. The UV–visible spectral analysis has been employed within 200–1100 nm to examine the optical transparency of GG crystal. The linear optical parameters of GG crystal has been evaluated using the transmittance data. The large enhancement in second harmonic generation (SHG) efficiency of GG crystal with reference to KDP and ADP crystal has been confirmed by Kurtz-Perry test. The competency of GG crystal for NLO device application has been proposed in vision of obtained results.
The good quality l-tartaric acid (LTA) single crystal of size 12 × 09 × 02 mm3 has been grown by slow solvent evaporation technique by optimizing the pH of aqueous solution. The crystallographic data ...and crystalline phase of grown LTA crystal has been determined using the powder X-ray diffraction study. The ground state molecular geometry of LTA molecule was optimized by means of CAM-B3LYP/6-31G* level of theory using density functional theory (DFT) approach. The qualitative and quantitative analysis of LTA crystal has been undertaken by means of energy dispersive spectroscopic technique. The UV–visible spectral analysis has been performed to determine the optical transparency of LTA crystal in the range of 190–1100 nm and the optical band gap has been evaluated using the transmittance data. The time dependent-DFT (TDDFT) was employed for calculating the absorption spectrum of the title molecule at B3LYP/6-31G*, CAM-B3LYP/6-31G*, LC-BLYP/6-31G*, M06/6-31G*, PBE1/6-31G* levels of theory. The highest occupied molecular orbital and lowest unoccupied molecular orbital (HOMO-LUMO) energy gap was found to be around 6.02 eV at B3LYP/6-31G* level of theory. The Kurtz-Perry powder test has been undertaken to determine the frequency doubling conversion efficiency of LTA crystal. The laser induced third order nonlinear optical (TONLO) effects occurring in LTA crystal have been evaluated by employing the Z-scan analysis at 640 nm. The phase change in refraction nonlinearity, nature of nonlinear absorption and cubic susceptibility of LTA crystal has been evaluated and their respective magnitudes have been determined. The laser damage threshold of LTA crystal has been investigated using the Nd:YAG laser operative at 1064 nm. The frequency response of dielectric constant and dielectric loss of LTA crystal has been investigated at different temperatures ranging from room temperature to 90 °C. The static dipole moment, polarizability and first hyperpolarizability has been evaluated and compared with standard urea molecule.
Display omitted
•LTA crystal firstly grown by controlling the pH of solvent.•Z-scan, dielectric and LDT studies of LTA crystal are firstly performed in literature.•Key properties of LTA were determined employing the computational DFT and TDDFT.•LTA can withstand the 1064 nm Nd:YAG laser shot delivering energy up to 83.8 mJ.•Low dielectrics encourages use of LTA for designing optoelectronic devices.
The genus Oopristus Steffan is being reported for the first time from India. O. iqrae Usman and Anwar sp. nov. is described based on females. An updated catalogue to the family Torymidae is provided ...from India. This catalogue lists 75 valid species included in 21 genera and four subfamilies. The subfamily Podagrioninae includes the largest number of 34 species (6 genera) followed by Toryminae 28 species (7 genera), Monodontomerinae 10 species (6 genera), and Microdontomerinae 3 species (2 genera). New combinations are provided for two Indian species of Pseuderimerus as Erimerus corianderi (Narendran and Mercy) comb. nov. and E. indicus (Subba Rao and Bhatia) comb. nov. Three species, Chrysochalcissa physomeri Bouček, Diomorus orientalis Masi, and Torymus varians (Walker), are removed from the fauna list of India.Article LSID:http://zoobank.org/urn:lsid:zoobank.org:pub:D20A52AB-152E-4319-9E92-DC7CCFEF4238Species LSID:Oopristus iqrae Usman & Anwarhttp://zoobank.org/urn:lsid:zoobank.org:act:4538D5EB-A348-4B52-80A8-997DDE730A9A
Honey bee gut microbiota have an important role in host health, nutrition, host-symbiont interaction, and interaction behavior with the surrounding environment. Recent discoveries of strain-level ...variation, characteristics of protective and nutritional capabilities, and reports of eco-physiological significance to the microbial community have emphasized the importance of honey bee gut microbiota. Many regions of Asia and Africa are inhabited by the dwarf honey bee,
. Studying its microflora and potential for pollination is therefore of foremost importance.
In the present investigation, we aimed to explore the gut bacteriobiome composition of two distinct honey bee species,
and
using high throughput sequencing. Functional predictions of
gut bacterial communities using PICRUSt2 was carried out.
The phylum Proteobacteria dominated the bacterial community in both
(50.1%) and
(86.7%), followed by Firmicutes (26.29 and 12.81%), Bacteroidetes (23.19 and 0.04%) and Actinobacteria (0.4 and 0.02%) respectively. The gut bacteria of
was more diverse than that of
. The observed variations in bacterial genomic diversity among these critical pollinator species may have been influenced by the apiary management techniques, ecological adaptation factors or habitat size. These variations can have a significant effect in understanding host-symbiont interactions and functioning of gut microbiota highlighting the importance of metagenomic survey in understanding microbial community ecology and evolution. This is the first comparative study on variation in bacterial diversity between two Asian honey bees.
Objective
To investigate Acacia honey from different altitudes regarding total phenols and flavonoids, laser-induced fluorescence (LIF) spectra and anticancer activity against human cancer cell ...lines.
Methods
Anticancer activity was investigated using sulforhodamine B cytotoxicity assays in the following human cancer cell lines: HCT116 (colon); MCF7 (breast), and HepG2 (liver). Total phenols and flavonoids were measured using spectrophotometric methods and LIF was used to differentiate between low and high-altitude honey.
Results
The LIF spectra differed between low and high-altitude Acacia honey. High altitude Acacia honey was characterized by significantly lower total phenol content (81.47 ± 1.25 mg gallic acid equivalent GAE/100 g) and increased total flavonoids (10.63 ± 0.53 mg quercetin equivalent QE/100 g) versus low altitude Acacia honey (91.33 ± 0.96 mg GAE/100 g and 8.78 ± 0.23 mg QE/100 g, respectively). Low altitude Acacia honey displayed increased IC50 values against HCT116 and MCF7 cells (264.17 ± 10.5 and 482.65 ± 20.3 µg/ml, respectively) versus high altitude Acacia honey (117.99 ± 12.7 and 189.82 ± 15.8 µg/ml, respectively).
Conclusions
High altitude Acacia honey had significantly more effective anticancer activity against HCT116 and MCF7 cells compared with low altitude honey.
The genus Alaptus Westwood (Hymenoptera: Mymaridae) is characterised by its minute-sized body with no visible petiole and deeply excised posterior margin of fore wing. Three new species are described ...from different Indian states or Union Territory: A. deodus Anwar & Zeya sp. nov. (Karnataka), A. spicatus Anwar & Zeya sp. nov. (Karnataka), and A. wandoorensis Anwar & Zeya sp. nov. (Andaman and Nicobar Islands). Two species, A. iceryae Riley (Karnataka) and A. terebrans Kryger (Karnataka), are recorded for the first time from India, albeit the identification of A. terebrans is tentative. Two Indian species are put under synonymy: A. jowainus Rehmat & Anis syn. nov. and A. pyronus Anwar & Zeya syn nov. under A. immaturus Perkins. As A. deccanensis Anwar & Zeya share most of its characters with A. fusculus Walker except its body and antennal sizes, so a comparative analysis of both the species is provided, but its synonymy with A. fusculus has not been proposed at present and it needs to be confirmed on the basis of molecular studies. A revised key to males and females of the Indian species is also provided.
http://urn:lsid:zoobank.org:pub:09951D88-75A8-43FF-87A1-9CF8F230D096
http://urn:lsid:zoobank.org:act:76C5EDBD-0B0E-41E6-B92F-07F636AA868C
http://urn:lsid:zoobank.org:act:1C55F240-BF4B-4954-A273-0CEB6D775B63
http://urn:lsid:zoobank.org:act:95744029-0947-4614-945B-350627CCE82A
Clove plant (Syzygium aromaticum) is one of the Myrtaceae family. It's a common flavor in food and the traditional medicine. The study's objective was to ascertain whether the clove bud aqueous ...extract (CAE) and CAE + nanosilver have any biological effects on immune cells and HT-29 colon cancer cell line. Nanosilver was produced through green synthesis approach using CAE. Produced nanosilver was characterized via electron microscope (scanning, SEM) and ultraviolet-visible spectroscopy. CAE and CAE + nanosilver were examined for their active biomolecules using FTIR analysis, p53 contents using real-time PCR, apoptosis and cell cycle arrest power on HT-29 cancer cell line via flow cytometerty and immunomodulatory potential utilizing MTT assay. Results cleared that a spherical nanosilver with a diameter range of 53 nm was formed by CAE. There were several active biomolecules in CAE and CAE + nanosilver. CAE and CAE + nanosilver increased the p53 protein expression and apoptotic cell number in HT-29 colon cancer cells. CAE and CAE + nanosilver could arrest HT-29 cells at the phase G2/M. CAE and CAE + nanosilver stimulated quiescent and PHA-pre-treated splenic cells at higher concentrations, and CAE suppressed quiescent splenic cell when diluted. In conclusion, the safe edible Syzygium aromaticum plant can be utilized to make anti-tumor agent, essentially for colon tumor. As Syzygium aromaticum plant could stimulate immune cells, it can be used as immune-stimulatory agent that can help fight tumor and tumor development.
Present investigation is aimed to explore the single crystal growth, microhardness and third order nonlinear optical (TONLO) properties of Nd
doped zinc tris-thiourea sulphate (ZTS) crystal. The ...commercial slow solvent evaporation technique has been chosen to grow a good quality ZTS (12 mm × 0.5 mm × 0.3 mm) and Nd
doped ZTS (11 mm × 0.6 mm × 0.4 mm) single crystals. Vickers microhardness test has been employed to analyze the influence of Nd
dopant on the hardness behavior of ZTS single crystal. The TONLO effects occurring in Nd
doped ZTS single crystal have been evaluated by means of Z-scan technique using a He–Ne laser operating at 632.8 nm. The close and open aperture Z-scan configuration have been used to determine the nature of TONLO refraction n
and absorption β, respectively. The magnitudes of vital TONLO parameters, such as refraction n
, absorption coefficient β, figure of merit and susceptibility χ
of the Nd
doped ZTS single crystal, have been determined using Z-scan transmittance data. The n
, β, and χ
of Nd
doped ZTS single crystal were found to be of the order of 10
cm
/W, 10
cm/W and 10
esu, respectively.
Abstract Present investigation has been started to perform the comparative study of pure and glycine doped KH 2 PO 4 (KDP) single crystals grown by most commercial slow solvent evaporation technique. ...The grown crystals were subjected to single crystal X-ray diffraction analysis to determine their structural parameters. The linear optical studies of pure and glycine doped KDP crystal have been undertaken within 200 nm to 1100 nm wavelength range by means of UV-Vis studies. The enhancement in second harmonic generation (SHG) efficiency of glycine doped KDP crystal has been determined using a standard Kurtz-Perry powder test. The dielectric measurements have been carried out to explore the impact of glycine dopant on dielectric constant and dielectric loss of KDP crystal. The surface growth habitat and etch pit density of glycine doped KDP crystal have been evaluated using the results of microscopic etching studies. In light of obtained results the suitability of glycine doped KDP crystal for device applications has been discussed.
PDF
