Dynamical invariants for quantum control of four-level systems

We present a Lie-algebraic classification and detailed construction of the dynamical invariants, also known as Lewis-Riesenfeld invariants, of the four-level systems including two-qubit systems which are most relevant and sufficiently general for quantum control and computation. These invariants not only solve the time-dependent Schr\"odinger equation of four-level systems exactly but also enable the control, and hence quantum computation based on which, of four-level systems fast and beyond adiabatic regimes.Comment: 11 pages, 5 table

Generalized Grassmannian Coherent States For Pseudo-Hermitian nn Level Systems

The purpose of this paper is to generalize fermionic coherent states for two-level systems described by pseudo-Hermitian Hamiltonian \cite{Trifonov}, to n-level systems. Central to this task is the expression of the coherent states in terms of generalized Grassmann variables. These kind of Grassmann coherent states satisfy bi-overcompleteness condition instead of over-completeness one, as it is reasonably expected because of the biorthonormality of the system. Choosing an appropriate Grassmann weight function resolution of identity is examined. Moreover Grassmannian coherent and squeezed states of deformed group $SU_{q}(2)$ for three level pseudo-Hermitian system are presented.Comment: 17 page

Ganoderma lucidum: A promising anti-inflammatory medicinal plant

Inflammation is a complex process and part of the host immune defense against invading micro-organism or trauma. Over production of some pro-inflammatory mediators can lead to chronic diseases of the inflammatory origin. Medicinal Plants which are used as anti-inflammatory agents, mainly act affecting various stages of the process of inflammation. In general they can inhibit formation of a wide of mediators such as cytokines by immune cells to prevent the inflammatory reaction cascade from starting. The use of most of the medicinal plants in treatment of chronic disease of the inflammatory origin is based on clinical and pharmacological trials. Meanwhile, the use of most of them is based on their longstanding traditional use in folk medicine. In this review, we report some of anti-inflammatory effects of G. lucidum as an ancient Chinese herbal medicine

Preparation and characterization of magnetic Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 nanoparticles and investigation of their photocatalytic and anticancer properties on PANC1 cells

Fe3O4/CdWO4 and Fe3O4/CdWO4/PrVO4 magnetic nanoparticles were prepared at different molar ratios of PrVO4 to previous layers (Fe3O4/CdWO4) via the co-precipitation method assisted by a sonochemical procedure, in order to investigate the photocatalytic performance of these systems and their cytotoxicity properties. The physico-chemical properties of these magnetic nanoparticles were determined via several experimental methods: X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier transformation infrared spectroscopy and ultraviolet-visible diffuse reflection spectroscopy, using a vibrating sample magnetometer and a scanning electron microscope. The average sizes of these nanoparticles were found to be in the range of 60-100 nm. The photocatalytic efficiency of the prepared nanostructures was measured by methylene blue degradation under visible light (assisted by H2O2). The magnetic nanosystem with a 1:2:1 ratio of three oxide components showed the best performance by the degradation of ca. 70 after 120 min of exposure to visible light irradiation. Afterwards, this sample was used for the photodegradation of methyl orange, methyl violet, fenitrothion, and rhodamine-B pollutants. Finally, the mechanism of the photocatalytic reaction was examined by releasing �OH under UV light in a system including terephthalic acid, as well as O2-, OH, and hole scavengers. Additionally, the cytotoxicity of each synthesized sample was assessed using a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay against the human cell line PANC1 (cancer), and its IC50 was approximately 125 mg/L. © 2019 by the authors

Combat against antibiotic resistance is a challenge in Bangladesh

To the Editor, Antibiotics are a class of drug used to treat or prevent infections caused by bacteria; they function by either eradicating the organism or stopping its growth. Penicillin, cephalosporins, macrolides, fluoroquinolones, and urinary anti-infectives are examples of common antibiotics. To effectively treat the illness, it's critical to take antibiotics as directed by a physician and to finish the entire course of treatment. Antibiotic resistance is a serious issue in Bangladesh as a result of subpar healthcare practices, antibiotic abuse, and overuse. Antibiotic resistance is the result of bacteria changing and becoming resistant to an antibiotic's effects. Moreover, one of Bangladesh's biggest challenges is the fight against antibiotic resistance. Therefore, the purpose of this letter is to raise awareness of the antibiotic resistance in Bangladesh

Concerns regarding SARS-CoV-2 JN.1 mutations should be raised

JN.1 is a new variant of SARS-CoV-2 which is a subvariant of Omicron (BA.2.86) was first discovered in the USA in September 2023. The virus’s capacity to spread and elude the immune system may be impacted by a single alteration in the spike protein, which serves as its distinguishing feature. JN.1 has been classified as an interesting variety by the World Health Organisation. JN.1 might lead to a rise in infections, or its possible influence on public health is yet premature. Current immunisations, examinations, and therapies are still anticipated to combat JN.1

Synthesis of magnetic fe3o4/znwo4 and fe3o4/znwo4/cevo4 nanoparticles: The photocatalytic effects on organic pollutants upon irradiation with uv-vis light

Magnetic Fe3O4/ZnWO4 and Fe3O4/ZnWO4/CeVO4 nanoparticles with different molar ratios of CeVO4 to other inorganic components were synthesized through co-precipitation with a sonochemical-assisted method. X-ray diffraction, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, vibrating sample magnetometry, and scanning electron microscopy (SEM) methods were used for the physico�chemical characterization of the obtained nanoparticles. As shown in the SEM images, the average sizes of the Fe3O4 /ZnWO4 and Fe3O4 /ZnWO4 /CeVO4 nanoparticles that formed aggregates were approximately 50�70 nm and 80�100 nm, respectively. The photocatalytic performance of these nanoparticles was examined by measuring methylene blue degradation under visible light (assisted by H2O2). The sample with a mass ratio of 1:2:1 (Fe3O4/ZnWO4/CeVO4, S4) exhibited optimal photocatalytic performance, and thus this sample was subsequently used for the photodegradation of different organic pollutants upon irradiation with ultraviolet (UV) and visible light. Approximately 90 and 70 degradation of methyl violet and methylene blue, respectively, was observed after visible light irradiation. Additionally, the mechanism of the photocatalytic reaction was investigated by measuring ·OH release under UV light in a system with terephthalic acid and by measuring the release of·O2 �,·OH, and hole scavengers. © 2020 by the authors. Licensee MDPI, Basel, Switzerland

Record dengue deaths in Bangladesh as disease patterns change

The worst dengue outbreak to ever strike Bangladesh was in 2023, caused by the DENV-2 strain. The Directorate General of Health Service (DGHS) estimated case fatality rate of 0.53 % in 2023 based on a total of 32,1179 laboratory-confirmed cases and 17,05 associated fatalities. The outbreak has spread to all eight divisions of the nation and displayed unique seasonality as well as an early, dramatic rise in case count, peaking in late June. Along with regional diversity in the epidemic loads, the outbreak has also shown differences in morbidity and death associated with age and gender. The government has stepped up its anti-dengue campaign in response to the crisis, including initiatives to increase public awareness and manage the mosquito population

In-silico design of curcumin analogs as potential inhibitors of dengue virus NS2B/NS3 protease

Curcumin can interact with a variety of molecules implicated in a wide range of disorders. It can also hinder dengue virus’s (DENV’s) ability to infect cells. This work used computational analysis to identify and forecast the most potent curcumin analogs against the DENV NS2B/NS3 protease. In this study, curcumin-like compounds were screened using a rational in-silico study, with the least similarity score, docking analysis, and then additional screening for suitable pharmacokinetic properties. According to the findings, DB11672 has been identified as the primary inhibitor of DENV NS2B/NS3 protease. It is recommended that additional research be done on this antiviral property of the lead compound as a part of the process of finding and developing a new drug against DENV

Preparation of Fe3O4/SiO2/TiO2/CeVO4 Nanocomposites: Investigation of Photocatalytic Effects on Organic Pollutants, Bacterial Environments, and New Potential Therapeutic Candidate Against Cancer Cells

The new nanocomposite with various molar ratios along with magnetic properties was fabricated via precipitation (assisted by ultrasonic) procedure. The photocatalytic effects of methylene blue (�90 degradation for optimized sample in 100 min) for finding the optimized sample performed under visible light irradiation. Moreover, the photo-antibacterial impacts of bacteria culture environments were found with an optimized sample that had effective destruction of bacteria in comparison to control group. The cytotoxicity properties of panc1 cells and magnetic behaviors of the obtained nanomaterials were evaluated and its IC50 was about 500 mg/L. As an initial step, the structural, morphological and magnetic characteristics of the fabricated nanocomposites were evaluated by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) and MAP, UV-visible diffuse reflectance spectroscopy (DRS), and vibrating sample magnetometry (VSM) approaches. Based on SEM results, the size of nanoparticles in fabricated nanocomposite was nearly 50�70 nm for Fe3O4/SiO2/TiO2 and 80�100 nm for Fe3O4/SiO2/TiO2/CeVO4. XRD results showed that desired nanocomposites were truly synthesized without any impurities. © Copyright © 2020 Marsooli, Rahimi-Nasrabadi, Fasihi-Ramandi, Adib, Eghbali-Arani, Ahmadi, Sohouli, Sobhani nasab, Mirhosseini, Gangali, Ehrlich and Joseph