Morphology and innervation of mouthpart sensilla in larvae of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae)

1980 ◽  
Vol 58 (5) ◽  
pp. 842-851 ◽  
Author(s):  
P. J. Albert
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Maxillary Palp ◽  
Labial Palp ◽  
Gustatory Sensilla ◽  
Scanning Electron

The structure and innervation as determined by methylene blue techniques of the sensilla of the maxillary palp, galea, mandible, labrum, and labial palp of the spruce budworm larva are described, based on light and scanning electron microscopy. An attempt is made to identify the function of various sensilla by comparing them with those of other insects. The function of the gustatory sensilla on the galea and epipharynx is confirmed electrophysiologically.

The adsorption of methylene blue on montmorillonite from acid solutions

Clay Minerals ◽  
2011 ◽  
Vol 46 (3) ◽  
pp. 461-471 ◽  
Author(s):  
Z. Klika ◽  
P. Pustková ◽  
M. Dudová ◽  
P. Čapková ◽  
Ch. Kliková ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Ion Exchange ◽  
Powder Diffraction ◽  
Acid Solutions ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Adsorption Wave ◽  
Scanning Electron

AbstractThe adsorption of methylene blue (MB) on montmorillonite from acid solutions has not yet been studied in detail. In this paper the adsorption of this dye on Ca/SAz montmorillonite from 0.32, 0.80 and 1.60 M HCl solutions at ambient temperature and after 2 hours leaching was carefully studied and evaluated. Under the above conditions the MB/SAz intercalates formed are practically insoluble. In contrast to the adsorption of methylene blue on montmorillonite from aqueous solutions, the adsorption from acid solutions consists of two adsorption waves. The intercalated samples from the first and second waves were studied using X-ray powder diffraction (XRD), FTIR, Vis spectroscopy, and scanning electron microscopy (SEM) equipped with a microprobe system. The adsorption of MB in the first wave is attributed to ion exchange of the dye cationic species (MB+, MB22+, H-aggregates, MBH2+ and H+) for the original interlayer cations of montmorillonite. The percentages of MBH2+ and H+ based on total adsorbed MB were estimated for varying HCl concentrations. The second adsorption wave is linked to the precipitation of MB species on the outer MB/SAz surface.

Polymer-cellulosic-clay and polymer-cellulosic-zeolitic biocomposites for the removal of methylene blue in aqueous solution

MRS Advances ◽  
2019 ◽  
Vol 4 (61-62) ◽  
pp. 3417-3421
Author(s):  
Ana Teresa Espinosa-Navarro ◽  
María del Carmen Díaz-Nava ◽  
Yolanda Alvarado-Pérez ◽  
Claudia Muro-Urista ◽  
José Juan García Sánchez
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Infrared Spectroscopy ◽  
Fourier Transformed Infrared Spectroscopy ◽  
Type Zeolite ◽  
Modified Clinoptilolite ◽  
Scanning Electron ◽  
Alginate Matrix

ABSTRACTIn the present investigation, biocomposites were synthesized from a polymeric alginate matrix in which the carrot residue and a natural bentonite (ANat / Bio) or an iron-modified clinoptilolite-type zeolite (ZFe / Bio) were supported. Their properties were evaluated adsorbents in contact with aqueous solutions of methylene blue (MB). In the first hour of contact, 46% removal was obtained for the ZFe / Bio biocomposite and 60% for the ANat / Bio biocomposite; reaching 100% removal for the ZFe / Bio biocomposite and 98% for the ANat / Bio biocomposite after 24 hours. The biocomposites were characterized by Scanning Electron Microscopy (SEM) and Fourier Transformed Infrared Spectroscopy (FTIR).

Scanning electron microscopy of the pit of the maxillary palp of selected species of Culicoides

1972 ◽  
Vol 50 (9) ◽  
pp. 1207-1210 ◽  
Author(s):  
Wayne A. Rowley ◽  
Marcia Cornford
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Maxillary Palp ◽  
Large Mammals ◽  
The Third ◽  
Interspecific Differences ◽  
Culicoides Variipennis ◽  
Maxillary Palps ◽  
Scanning Electron

The pits on the third segment of the maxillary palps of Culicoides variipennis, C. obsoletus, C. crepuscularis, C. haematopotus, and C. guttipennis were studied with the scanning electron microscope. The size and shape of the palpal pits and the type and number of sensilla were determined for females of each species and for males of C. variipennis and C. crepuscularis. The bulb-shaped sensilla are remarkably similar in all species, but there are considerable interspecific differences in the size of the pits and in the number of sensilla. The two species that normally feed on large mammals (C. obsoletus and C. variipennis) have significantly fewer sensilla per pit than do species considered ornithophilic. Also, males have fewer sensilla than do females of the same species.

Photocatalytic Decolorization of Methylene Blue by Ferric Stearate, Ferrocene and NiDBC under Sunlight Irradiation

2011 ◽  
Vol 695 ◽  
pp. 133-136
Author(s):  
Zhao Zhao ◽  
Xue Gang Luo ◽  
Xiao Yan Lin
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Aqueous Solutions ◽  
Diffuse Reflectance ◽  
Diffuse Reflectance Spectroscopy ◽  
Reflectance Spectroscopy ◽  
Sunlight Irradiation ◽  
Photocatalytic Decolorization ◽  
Scanning Electron

In this work, ferric stearate, ferrocene and nickel N,N-dibuty dithiocarbamate (NiDBC) were utilized as photocatalyst for the decolorization of methylene blue (MB) aqueous solutions under sunlight irradiation. Pure MB solution was used as reference. Absorption intensities and surface morphology of these photocatalyst were investigated by Diffuse Reflectance Spectroscopy (DRS) and Scanning Electron Microscopy (SEM).The study indicated that ferric stearate had minimal promotion to the decolorization of MB aqueous solutions; and ferrocene exhibited better photocatalysis ability after had been irradiated 60 hours. In this study, NiDBC showed the best photocatalysis ability from the beginning. Furthermore, NiDBC enhanced the decolorization of MB after been irradiated for 31 hours. And after being irradiated 270 hours, the MB aqueous was completely decolorized by NiDBC.

Application of Molybdenum ZSM-5 for Catalytic Oxidation of Wastewater Containing Methylene Blue

2020 ◽  
Vol 7 (3) ◽  
pp. 256-264
Author(s):  
Debarpita Ghosal ◽  
D. Kissan Achary ◽  
Sandil Nayak ◽  
Bikash Kumar
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Catalytic Oxidation ◽  
Surface Area ◽  
Crystalline Structure ◽  
Energy Dispersive ◽  
X Ray ◽  
Metal Impregnation ◽  
Scanning Electron

Background:: A vital section of water pollution mostly comes from the dying industry, which contaminates the water bodies by discharging the effluents into them. Naturally, it is carcinogenic as it contains harmful chemicals and minerals. To prevent this , many researchers have studied the issue and came to an inference that Methylene blue should be removed from wastewater. Many researchers and scientists proposed that Zeolite with little modifications could be one of the feasible options for catalytic oxidation of dyes in wastewater. Our focus is mostly based on Molybdenum impregnated H-ZSM-5 to catalytically oxidize methylene blue present in wastewater. Objective:: This method examined the Catalytic oxidation of wastewater containing Methylene Blue by the application of Mo-ZSM-5. Methods:: Raw H-ZSM-5 was activated and impregnated with previously prepared MoCl5 and allowed to dry and calcine at the required temperature. The product was characterized by Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy and BET Surface Area Analyser methods. Catalytic oxidation reactions were carried out at room temperature using hydrogen peroxide as oxidant. The effect of each parameter was investigated vividly. Results:: From the Energy Dispersive X-ray Spectroscopy method, it was observed that the percentage for Molybdenum over H-ZSM-5 was 9%. Surface area analysis suggested that the value for the surface area of unimpregnated H-ZSM-5 was 511 m2/g for 5% impregnation and 307 m2/g for 10% metal impregnation. A sharp decrease in the surface area was observed. Scanning Electron Microscopy images depict that the crystalline structure of raw H-ZSM-5 would not be damaged due to metal impregnation. Its shape and size were unaltered. In the images, the porous surface was observed. Conclusion:: Zeolites are an important catalyst in active phases for acidic/basic/redox catalysed reactions. Its activity and selectivity affected by the crystalline structure as well as morphological properties. Molybdenum impregnated H-ZSM-5 catalyst is best popularly known for its shape selectivity property. It promotes faster decomposition of H2O2 to non-reactive O2, which shows poor oxidation activity.

scholarly journals Synthesis of silica of rice husk modification (3-aminopropyl) trietoxysilane for adsorption methylene blue

2018 ◽  
Vol 197 ◽  
pp. 09009
Author(s):  
Yusmaniar Yusmaniar ◽  
Darsef Darwis ◽  
Afrizal Afrizal ◽  
Annisa Annisa
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Surface Area ◽  
Adsorption Process ◽  
Low Cost ◽  
Sol Gel ◽  
Alkaline Ph ◽  
Modified Silica ◽  
Scanning Electron

In this study, modified silica (3-Amynopropyl) triethoxysilane (APTES) synthesis and adsorption test of MB dye were performed. Silica is synthesized by sol-gel method and modified with APTES. APTES modified silica is characterized using several instruments, scanning electron microscopy (SEM), fourier transform infrared (FTIR), surface area analyzer (SAA) and UV-Vis spectrophotometer. The composite has a large surface area and has a mesoporous shape. At alkaline pH, MB dye can adsorb well. In addition, MB absorption is also maximized with the longer time of adsorption. The APTES modified silica adsorption process follows the Langmuir isotherm pattern. Thus, APTES modified silica can be used as an alternative to environmentally friendly and low-cost adsorbents.

scholarly journals Novel CaMoO4@GO Nanocomposite: Synthesis, Characterization, and Investigation its Photocatalytic Properties

2020 ◽  
pp. 87-95
Author(s):  
Seyed Mostafa Hosseinpour Mashkani
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Photocatalytic Properties ◽  
Energy Dispersive Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Calcium Molybdate ◽  
Scanning Electron

The current study aims to synthesize and characterize Calcium Molybdate-Graphene Oxide (CaMoO4@GO) nanocomposite under ultrasonic irradiation. Primarily, degradation of Methylene blue (MB) under Uv-Vis light was investigated to measure the photocatalytic properties of the as-synthesized CaMoO4@GO nanocomposite. In addition, various graphene oxide concentrations were applied to investigate its impact on the optical and photodegradation properties of calcium molybdate. X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectra energy dispersive analysis of X-ray (EDS) were used to characterize CaMoO4@GO nanocomposite. DRS results demonstrated that GO influenced significantly the optical properties of CaMoO4 as much as band gap of CaMoO4@GO nanocomposite shows a redshift in comparison with pure CaMoO4. Consequently, photocatalytic results demonstrated that adding GO causes to increase photodegradation of MB form 65% (CaMoO4) to 89% (CaMoO4@GO).

Multi-Cycle Photodegradation of Anionic and Cationic Dyes by New TiO2/DSAT Immobilization System

2016 ◽  
Vol 835 ◽  
pp. 353-358 ◽  
Author(s):  
Wan Izhan Nawawi ◽  
S.K. Ain ◽  
R. Zaharudin ◽  
Sudirman Sahid
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Photocatalytic Performance ◽  
Glass Plate ◽  
Sem Analysis ◽  
Adhesive Tape ◽  
Support Material ◽  
Reactive Red 4 ◽  
Scanning Electron

In this work, titanium dioxide (TiO2) photocatalyst was generally immobilized onto glass plate support material by employing double sided adhesive tape (DSAT) as a thin layer binder. The photocatalytic performance of this new non-additive immobilization system was observed under the degradation of two different charges of dyes namely anionic reactive red 4 (RR4) and cationic methylene blue (MB) dyes. Photocatalytic degradation of RR4 and MB dyes under immobilized TiO2/DSAT were compared with TiO2 in suspension mode respectively. Immobilized TiO2/DSAT was observed to have up to 30 cycles of reusability thanks to DSAT that is able to provide a very strong intact between the glass plate and TiO2 layers. In fact, a better photodegradation activity was observed by number of photocatalysis cycles due to increasing pores formation on TiO2 surface as observed by Scanning Electron Microscopy (SEM) analysis.

Morphology and histology of the antenna of the male eastern spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae)

1973 ◽  
Vol 51 (4) ◽  
pp. 443-448 ◽  
Author(s):  
P. J. Albert ◽  
W. D. Seabrook
Keyword(s):  
Electron Microscopy ◽  
Choristoneura Fumiferana ◽  
Spruce Budworm ◽  
Histological Techniques ◽  
Male Antenna ◽  
Sensilla Trichodea ◽  
Female Antenna ◽  
Eastern Spruce Budworm ◽  
Sensilla Styloconica ◽  
Scanning Electron

The number and distribution and the morphology of the various receptors on the male antenna of the spruce budworm, Choristoneura fumiferana (Clem.) (Lepidoptera: Tortricidae), are described, using histological techniques and scanning electron microscopy. Receptors described include Böhm bristles, four types of sensilla trichodea, sensilla chaetica, sensilla coeloconica, and sensilla styloconica. Except for the sensilla chaetica, generally more receptors are found on the male than on the female antenna.

Low Temperature Hydrothermal Synthesis of 3D-MnO2 Nanostructures and their Catalytic Properties over MB

2013 ◽  
Vol 448-453 ◽  
pp. 730-733
Author(s):  
Si Liang Li ◽  
Ya Jie Guo ◽  
Jing Juan Pu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Methylene Blue ◽  
Catalytic Properties ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Hydrothermal Route ◽  
X Ray ◽  
Facile Hydrothermal Route ◽  
Scanning Electron

A novel three-dimensional MnO2 catalyst have been successfully prepared by a facile hydrothermal route. They were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). In addition, they showed excellent catalytic activity over the aqueous degradation of methylene blue (MB).

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