Maintaining the stability of environmental organisms is crucial for their survival, yet it face significant challenges due to climate change, particularly ultraviolet (UV) radiation. UV radiation can cause severe damage to DNA, and lead to morphological changes, deformities, and even death. This damage can be mitigated through the use of protective creams manufactured using nanotechnology. In this work, we investigate the effects of UV-C radiation on earthworms, with a focus on their skin damage response. We employed histological examination and electron microscopy to study these effects in detail. Our findings reveal that earthworms display extreme sensitivity when exposed to UV-C light. As an initial defensive response, they produce a subterranean fluid post-autopsy. However, increased doses of UV-C lead to tissue inflammation and subsequent death. Notably, when TiO₂ nanoparticles were applied before UV-C exposure, they effectively protected the worms from UV-induced damage. This study provides valuable insights into the impact of UV radiation on earthworms and highlights the potential of nanotechnology in offering protection.

In underdeveloped nations, multidrug resistance has grown to be a serious problem. Multidrug resistance bacterial infections lead to a significant increase in patients, death and the cost of prolonged treatment. For this, there is an urgent need to design strategies to improve the antimicrobial potential of therapeutic agents. The current review aims to synthesize chitosan-coated organic Metal-Organic Frameworks (MOFs) and camel milk and use them to treat many diseases. A chitosan has activities that include the antitumor, antimicrobial, antioxidant and anti-inflammatory. These traits position them as promising therapeutic polymers. Camel milk has also shown diverse applications, affecting various aspects such as bone health, muscle function, blood standards, brain function, pancreatic activity, immune response, cancer prevention, infection resistance, metabolism, wound healing, learning, and aging. Metal-Organometallic frameworks (MOFs) are an extremely modifiable hybrid material, consisting of metal ions bound together by organic bonds that have been used as excellent drug delivery agents for cancer and many other diseases. We also highlight the role of chitosan in remove fine suspended particles and heavy metals from polluted the environment. A discovery about the power of chitosan, which was manufactured from food waste and used as a green solution to new environmental challenges.

The authors present here the decomposition of un-irradiated (pristine) as well as of gamma (γ) and electron beam (EB) irradiated samples of europium (III) acetate hydrate (EuAc.xH₂O) in the temperature range of 25-900 ℃  in the air atmosphere. Two absorbed doses of 10³ (γ-ray) and 10² kGy (EB) were examined. The profiles of the TG curves of the dehydration process display noticeable changes in induction periods and mass loss percentages by exposure to irradiation. The kinetics of the dehydration process were analyzed using both model-fitting and model-free approaches. The dehydration process was controlled by the phase boundary model (R₂). The E_a −α plots indicate that the dehydration is not a complex process and follows one reaction mechanism. Powder X-ray diffraction displayed that europium acetate hydrate crystallizes in a monoclinic system (SG P2/m), and no phase transformation was detected by two sources of irradiation up to 10³ (γ-ray) and 10² kGy (EB). Thermodynamic parameters of the dehydration process were calculated and assessed. A predicted thermogram (TG) of the isothermal dehydration of EuAc.xH₂O was constructed from non-isothermal data and used to determine the reaction model and the kinetic parameters of the dehydration process.

The authors present here the decomposition of un-irradiated (pristine) as well as of gamma (γ) and electron beam (EB) irradiated samples of europium (III) acetate hydrate (EuAc.xH₂O) in the temperature range of 25-900  in the air atmosphere. Two absorbed doses of 10³ (γ-ray) and 10² kGy (EB) were examined. The profiles of the TG curves of the dehydration process display noticeable changes in induction periods and mass loss percentages by exposure to irradiation. The kinetics of the dehydration process were analyzed using both model-fitting and model-free approaches. The dehydration process was controlled by the phase boundary model (R₂). The −α plots indicate that the dehydration is not a complex process and follows one reaction mechanism. Powder X-ray diffraction displayed that europium acetate hydrate crystallizes in a monoclinic system (SG P2/m), and no phase transformation was detected by two sources of irradiation up to 10³ (γ-ray) and 10² kGy (EB). Thermodynamic parameters of the dehydration process were calculated and assessed. A predicted thermogram (TG) of the isothermal dehydration of EuAc.xH₂O was constructed from non-isothermal data and used to determine the reaction model and the kinetic parameters of the dehydration process.

The non-oxidative dehydrogenation of methanol is considered a promising method for producing formaldehyde (FA), where the resulting anhydrous formaldehyde is perfect for the use in the subsequent generation of oxygenated synthetic fuels. In the current investigation, a series of Zr(MoO₄)₂ nanoaggregates, as a novel solid acid catalyst, were hydrothermally fabricated at different temperatures in the presence of triethylamine (TEA) as a surfactant. The original and calcined catalysts were characterized by TGA, DSC, XRD, FT-IR, XPS, HR-TEM, acidity and nitrogen sorption. Analyses revealed that the addition of TEA to the preparation procedures significantly enhanced the textural, acidic, and the catalytic performance of these catalysts. Acidity measurements reflected that the surface of these catalysts possessed Brønsted type of acidic sites of weak and intermediate strength. Catalytic activity results demonstrated that, Zr(MoO₄)₂ catalyst with Zr: TEA molar ratio of 1:1 (Z₁T₁) annealed at 400°C exhibited the maximum methanol conversion of 99% and 95% selectivity to formaldehyde at reaction temperature of 325°C. The remarkable catalytic performance was well correlated to the variation in acidity of the catalyst. This catalyst offered a long-term stability towards the production of formaldehyde for a period of time of 160 h with the same activity and selectivity. Also, this catalyst could be re-used for five time giving almost the same performance. The reason for this extreme catalytic activity and selectivity towards formaldehyde synthesis is the presence of weak and moderate strengthened Brønsted acid sites. In light of this, this work has produced an active, stable, and selective catalyst for the conversion of methanol to formaldehyde that is competitive with the most effective conventional and recently discovered catalysts.

The greatest, most destructive, and longest-lasting pollutant in several ecosystems is plastic. Plastic pollutants have fatal impacts on birds, worms, fish, turtles, seals, bivalves, and plankton in aquatic ecosystems. They cause physiological stress, toxicological injury, drowning, starvation, and decreased oxygen and light needed by organisms. Through their impacts on plankton, freshwater, marine, and terrestrial ecosystems, plastics can change the global carbon cycle. When plastics degrade, they release hazardous substances, microplastics, cellulosic microfibers, and metals into the water and soil, eventually making their way into the food webs. Plastic pollutants in the food chain can alter gene expressions, protein expression, and brain development, and cause disturbed feeding behavior, inflammation, slow growth, and decreased respiration rates. Mycoremediation (fungal-based biodegradation) of plastic pollutants is an efficient, affordable, accessible, and environmentally acceptable method of removing contaminants. Fungi remove plastic pollutants using nonspecific or enzymatic processes. In our chapter, we will cover the current state of plastic pollution, its harmful impacts on diverse life forms, as well as the mycoremediation techniques and mechanisms of plastic pollutants.

The main aim of the present work is to give some interesting the q-analogues of various q-recurrence
relations, q-recursion formulas, q-partial derivative relations, q-integral representations, transformation and
summation formulas for bibasic Humbert hypergeometric functions 1 and 2 on two independent bases q and
p of two variables, believed to be new, by using the conception of q-calculus. Finally, some interesting special
cases and straightforward identities connected with bibasic Humbert hypergeometric series of the types 1 and
2 are established when the two independent bases q and p are equal.

So far, achieving high apparent quantum yield (AQY) in polymeric photocatalysts at wavelengths up to 500 nm has never been achieved. Covalent organic polymers (COPs) have the advantage of high structure function tunability. However, despite decades of development, COPs still lag in achieving high AQY value, highlighting the need for an optimal COP structural design for efficient photocatalysis. Herein, we present a green synthetic approach to synthesize five hydrophilic and non-conjugated linkage with D-π-A system benzoin-based COPs by self-condensation of multiformly monomers. Charge kinetic carrier and femtosecond transient absorption (fs-TAS) demonstrate the efficient charge transport of benzoin-based COPs. Among the synthesized photocatalysts, B-PyTT-COP (D-π-A) outperforms the COP family, with an excellent HER of 233.81 µmol h⁻¹ (77935 µmol g⁻¹h⁻¹) using Platinum as co-catalyst. Remarkedly, B-PyTT-COP has achieved an exceptional ability to generate a high AQY value at 500 nm (65.35 %), surpassing all other materials examined thus far.

Photocatalytic hydrogen production through water splitting provides a promising route towards renewable energy generation. However, constructing photocatalytically active covalent organic frameworks with high charge separation remains challenging. Herein, we demonstrate for the first time the use of 2D imide–imine-based covalent organic frameworks as new photocatalysts for the hydrogen evolution reaction (HER) under visible light irradiation. The main achievement is incorporating donor and dual acceptors, including weak electron-deficient imine and strong electron-deficient imide groups within the 2D COF backbone that create favorable push–pull–pull intramolecular charge transfer to promote charge separation after photoexcitation. DFT and NBO calculations revealed the strong integration of donor and dual acceptors with a synergistic interplay enhancing spatial charge transfer and separation. The synthesized COFs show significantly high thermal stability >400 °C with a high energy barrier for degradation. Moreover, Py-DNII-COF exhibited a 104-fold enhancement in hydrogen evolution compared to TFPB-DNII-COF. Py-DNII-COF demonstrated excellent stability and hydrogen evolution of 625 μmol h⁻¹ g⁻¹ over 48 hours.