In this paper we report the construction of a hollow microtubular triazine‐ and benzobisoxazole‐based covalent organic framework (COF) presenting a sponge‐like shell through a template‐free [3+2] condensation of the planar molecules 2,4,6‐tris(4‐formylphenyl)triazine (TPT‐3CHO) and 2,5‐diaminohydroquinone dihydrochloride (DAHQ‐2HCl). The synthesized COF exhibited extremely high crystallinity, a high surface area (ca. 1855 m2 g−1), and ultrahigh thermal stability. Interestingly, a time‐dependent study of the formation of the hollow microtubular COF having a sponge‐like shell revealed a transformation from initial ribbon‐like crystallites into a hollow tubular structure, and confirmed that the hollow nature of the synthesized COF was controlled by inside‐out Ostwald ripening, while the non‐interaction of the crystallites on the outer surface was responsible for the sponge‐like surface of the tubules. This COF exhibited significant supercapacitor performance: a high specific capacitance of 256 F g−1 at a current density of 0.5 A g−1, excellent cycling stability (98.8 % capacitance retention over 1850 cycles), and a high energy density of 43 Wh kg−1. Such hollow structural COFs with sponge‐like shells appear to have great potential for use as high‐performance supercapacitors in energy storage applications.

In this study we synthesized two tetraphenyl-p-phenylenediaminebased covalent organic frameworks (TPPDA-TPPyr and TPPDATPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

In this study we synthesized two tetraphenyl-p-phenylenediaminebased covalent organic frameworks (TPPDA-TPPyr and TPPDATPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

One hundred and twenty‐nine isolates of Trichosporon jirovecii were isolated from the melanized exoskeleton as well as eyestalks, gills, muscle and haemolymph of red swamp crayfish (Procambarus clarkii) collected from the River Nile, during summer 2015. Isolates were similar morphologically, biochemically and genetically. Also, random amplified polymorphic DNA (RAPD) analysis exhibited no polymorphism among the tested isolates. Virulence factors such as chitinase, protease, lipase activities and biofilm formation were examined. Challenge test, using a representative isolate (Tj_ASU8), proved its pathogenicity against crayfish. Magnesium oxide nanoparticles had a good antifungal activity with a minimum fungicidal concentration of 8 mg/ml. To the best of our knowledge, this is the first report for isolation of T. jirovecii from red swamp crayfish, showing melanization, from the River Nile. We assume that infected crayfish may act as a vector for this fungus and can disseminate infection to all susceptible hosts in the vicinity.

One hundred and twenty‐nine isolates of Trichosporon jirovecii were isolated from the melanized exoskeleton as well as eyestalks, gills, muscle and haemolymph of red swamp crayfish (Procambarus clarkii) collected from the River Nile, during summer 2015. Isolates were similar morphologically, biochemically and genetically. Also, random amplified polymorphic DNA (RAPD) analysis exhibited no polymorphism among the tested isolates. Virulence factors such as chitinase, protease, lipase activities and biofilm formation were examined. Challenge test, using a representative isolate (Tj_ASU8), proved its pathogenicity against crayfish. Magnesium oxide nanoparticles had a good antifungal activity with a minimum fungicidal concentration of 8 mg/ml. To the best of our knowledge, this is the first report for isolation of T. jirovecii from red swamp crayfish, showing melanization, from the River Nile. We assume that infected crayfish may act as a vector for this fungus and can disseminate infection to all susceptible hosts in the vicinity.

One hundred and twenty‐nine isolates of Trichosporon jirovecii were isolated from the melanized exoskeleton as well as eyestalks, gills, muscle and haemolymph of red swamp crayfish (Procambarus clarkii) collected from the River Nile, during summer 2015. Isolates were similar morphologically, biochemically and genetically. Also, random amplified polymorphic DNA (RAPD) analysis exhibited no polymorphism among the tested isolates. Virulence factors such as chitinase, protease, lipase activities and biofilm formation were examined. Challenge test, using a representative isolate (Tj_ASU8), proved its pathogenicity against crayfish. Magnesium oxide nanoparticles had a good antifungal activity with a minimum fungicidal concentration of 8 mg/ml. To the best of our knowledge, this is the first report for isolation of T. jirovecii from red swamp crayfish, showing melanization, from the River Nile. We assume that infected crayfish may act as a vector for this fungus and can disseminate infection to all susceptible hosts in the vicinity.

The use of pesticides against the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) as a
tool to control the pest has become an obstacle to the fresh agricultural products export to many countries that
restrict pesticides residues. The effectiveness of three local strains of entomopathogenic fungi: Metarhizium
anisopliae, Beauveria bassiana, and Paecilomyces lilacinus against the adult and immature stages of C. capitata was
evaluated under laboratory conditions. Obtained results showed that M. anisopliae and B. bassiana were superior in
its pathogenicity and potential to kill the pest than P. lilacinus. These results may be important to be used for the
control of the pest in IPM program.

The use of pesticides against the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) as a
tool to control the pest has become an obstacle to the fresh agricultural products export to many countries that
restrict pesticides residues. The effectiveness of three local strains of entomopathogenic fungi: Metarhizium
anisopliae, Beauveria bassiana, and Paecilomyces lilacinus against the adult and immature stages of C. capitata was
evaluated under laboratory conditions. Obtained results showed that M. anisopliae and B. bassiana were superior in
its pathogenicity and potential to kill the pest than P. lilacinus. These results may be important to be used for the
control of the pest in IPM program.

Kesterite Cu2ZnSnS4 (CZTS) nanostructure is synthesized without the sulfurization process using a solvothermal technique. The induced effects in the optical properties of the fabricated film of this nanostructure are studied. As XRD analysis revealed the as-prepared film is polycrystalline in nature which indexed in the tetragonal Kesterite structure of the CZTS phase. Optical properties related to solar cell parameters, such as absorption coefficient, penetration depth, Urbach energy, and energy band gap are studied. The absorption coefficient of 1.5 � 105 cm

Kesterite Cu2ZnSnS4 (CZTS) nanostructure is synthesized without the sulfurization process using a solvothermal technique. The induced effects in the optical properties of the fabricated film of this nanostructure are studied. As XRD analysis revealed the as-prepared film is polycrystalline in nature which indexed in the tetragonal Kesterite structure of the CZTS phase. Optical properties related to solar cell parameters, such as absorption coefficient, penetration depth, Urbach energy, and energy band gap are studied. The absorption coefficient of 1.5 � 105 cm