Numerical Analysis of the Impact Resistance of Composite A-Shaped Sandwich Structures.

This paper focuses on the finite element analysis simulation of the impact properties of composite sandwich structures made of carbon fiber-reinforced polymer lamina. In the existing studies, the composite sandwich structures with A-shaped cores have superior mechanical properties under quasi-static plane compression loads compared to W-shaped, Y-shaped, and X-shaped cores. However, there is limited research on the impact resistance of this structure.

Leaf Morphological and Epidermal Traits Variability along an Environmental Gradients in Ten Natural Populations of .

The species belonging to the genus possess ecological, economic, and medicinal value. They show a very high ecological plasticity. This research is a contribution to the study of the intraspecific diversity and variability of 10 populations of in different bioclimates.

Surface-Framework structure: A neural network structure for weakening gridding effect in PCB mark-point semantic segmentation.

Image transfer plays a significant role in the manufacture of PCB; it affects the production speed and quality of the manufacturing process. This study proposes a surface-framework structure, which divides the network into two parts: surface and framework. The surface part does not include subsampling to extract the detailed features of the image, thereby improving the segmentation effect when the computing power requirement is not large.

Development and validation of a risk prediction nomogram for disposition of acute clozapine intoxicated patients to intensive care unit.

Background: Clozapine is an atypical antipsychotic drug used for the treatment of refractory schizophrenia. It is reported as the most toxic in its class. Using serum clozapine level as a severity indicator is doubtful and unfeasible, particularly in low resourced countries.

Deep learning-based prediction for time-dependent chloride penetration in concrete exposed to coastal environment.

The application of deep learning methods in civil engineering has gained significant attention, but its usage in studying chloride penetration in concrete is still in its early stages. This research paper focuses on predicting and analyzing chloride profiles using deep learning methods based on measured data from concrete exposed for 600 days in a coastal environment. The study reveals that Bidirectional Long Short-Term Memory (Bi-LSTM) and Convolutional Neural Network (CNN) models exhibit rapid convergence during the training stage, but fail to achieve satisfactory accuracy when predicting chloride profiles.

The Role of Vaccination and Face Mask Wearing on COVID-19 Infection and Hospitalization: A Cross-Sectional Study of the MENA Region.

Since the emergence of the Coronavirus disease (COVID-19) pandemic, the disease has affected more than 675 million people worldwide, including more than 6.87 million deaths. To mitigate the effects of this pandemic, many countries established control measures to contain its spread.

Crayfish Research: A Global Scientometric Analysis Using CiteSpace.

A scientometric analysis was conducted to investigate the trends and development of crayfish research in terms of literature published, author, affiliation, and countries' collaborative networks, as well as the co-citation dataset (e.g., author, article, and keywords).

Generative adversarial networks in EEG analysis: an overview.

Electroencephalogram (EEG) signals have been utilized in a variety of medical as well as engineering applications. However, one of the challenges associated with recording EEG data is the difficulty of recording large amounts of data. Consequently, data augmentation is a potential solution to overcome this challenge in which the objective is to increase the amount of data.

Pirimicarb Induction of Behavioral Disorders and of Neurological and Reproductive Toxicities in Male Rats: Euphoric and Preventive Effects of Monjauzeana.

Carbamate pesticides are a risk to human well-being, and pirimicarb is the most widely employed carbamate insecticide. This ongoing investigation aimed to reveal its toxicity on neurobehavioral and reproductive function. The study was carried out on male Wistar rats by assessment of behavioral changes via experiments, such as the forced swim test and the elevated plus maze; determination of oxidative stress (checking parameters such as catalase activity, etc.

Molecular Dynamics Simulation on Nanoindentation of M50 Bearing Steel.

M50 bearing steel has great potential for applications in the field of aerospace engineering, as it exhibits outstanding mechanical and physical properties. From a microscopic point of view, bearing wear originates from the microscopic region of the contact interface, which usually only contains hundreds or even several atomic layers. However, the existing researches seldom study the wear of M50 bearing steel on the microscopic scale.

A neurotransmitter histamine mediating phototransduction and photopreference in Callosobruchus maculatus.

Background: The biogenic amine histamine plays a critical role in the phototransduction and photopreference of most insects. Here, we study the function of histamine in Callosobruchus maculatus, a global storage pest.

Results: In our experiment, we initially identified the histidine decarboxylase (hdc) gene through bioinformation analysis.

Novel Hot Vapor Filter Design for Biomass Pyrolysis.

Fast pyrolysis is a mature technology for the conversion of solid biomass into a liquid intermediate, fast pyrolysis bio-oil (FPBO). FPBO has so far been used mainly as heating fuel, but the target is to use it for the production of sustainable fuels and chemicals in the future. In the pyrolysis process, inorganic materials (ash) from the biomass are mostly sequestered in char particles, which can be separated with cyclones.

Phytochemicals, Antioxidant and Antimicrobial Potentials and LC-MS Analysis of Desf. Extracts.

(), belonging to the family Asteraceae, is an Algerian medicinal plant used in folk medicine to treat different diseases related to hyperglycemic and inflammatory disorders, as well as in food. The present study aimed to assess the total phenolic content, in vitro antioxidant and antimicrobial activity and phytochemical profile of the extracts of . The extraction of phenolic compounds from aerial parts was conducted using solvents of increasing polarity starting from methanol, resulting in crude extract (CE), to chloroform extract (CHE), ethyl acetate extract (EAE) and butanol extract (BUE).

Function-driven design of and co-culture to improve quality of flue-cured tobacco.

Flue-cured tobacco (FCT) is an economical raw material whose quality affects the quality and cost of the derived product. However, the time-consuming and inefficient spontaneous aging is the primary process for improving the FCT quality in the industry. In this study, a function-driven co-culture with functional microorganisms was built in response to the quality-driven need for less irritation and more aroma in FCT.

A new chromone derivative from an endophytic sp. GXNU-B1.

A new chromone derivative, aspergione A (), along with seven known metabolites, was isolated from a mangrove endophytic fungus, sp. GXNU-B1, which was collected from mangrove L. Their structures and the absolute configuration of were elucidated based on the analysis of HR-ESI-MS, NMR, and ECD calculation.

Removal of Brilliant Green Dye from Water Using Tree Leaves as an Efficient Biosorbent.

The presence of dyes in water stream is a major environmental problem that affects aquatic and human life negatively. Therefore, it is essential to remove dye from wastewater before its discharge into the water bodies. In this study, Banyan () tree leaves, a low-cost biosorbent, were used to remove brilliant green (BG), a cationic dye, from an aqueous solution.

Solar photodegradation of Rhodamine B dye by CuO/TiO heterostructure: experimental and computational studies of degradation and toxicity.

Context And Results: In this study, the heterojunction CuO/TiO is used for the degradation of a cationic dye, Rhodamine B, under solar light irradiation over a wide pH range. The physical and optical properties of both semiconductors CuO and TiO are correlated with the photo-electrochemical characterization to establish the energy diagram of the heterojunction CuO/TiO. X-ray diffraction, UV-visible, SEM, EDX, and BET analyses are conducted for both photocatalysts.

Risk evaluation and mitigation against flood danger in an arid environment. A case study (El Bayadh region, Algeria).

Floods are among the most serious and devastating phenomena of natural disasters. Cities adjacent to flood-prone areas in the last decades have played a major role in increasing the potential adverse effects of flood damage. This research study aims to evaluate and mitigate the risks of flood events in the El Bayadh region, which suffers from poor infrastructure and drained networks.

Plastome phylogenomics provide new perspective into the phylogeny and evolution of Betulaceae (Fagales).

Background: Betulaceae is a relatively small but morphologically diverse family, with many species having important economic and ecological values. Although plastome structure of Betulaceae has been reported sporadically, a comprehensive exploration for plastome evolution is still lacking. Besides, previous phylogenies had been constructed based on limited gene fragments, generating unrobust phylogenetic framework and hindering further studies on divergence ages, biogeography and character evolution.

Lytic polysaccharide monooxygenase increases cellobiohydrolases activity by promoting decrystallization of cellulose surface.

Efficient depolymerization of crystalline cellulose requires cooperation between multiple cellulolytic enzymes. Through biochemical approaches, molecular dynamics (MD) simulation, and single-molecule observations using high-speed atomic force microscopy (HS-AFM), we quantify and track synergistic activity for cellobiohydrolases (CBHs) with a lytic polysaccharide monooxygenase (LPMO) from . Increasing concentrations of LPMO (AA9D) increased the activity of a glycoside hydrolase family 6 CBH, Cel6A, whereas the activity of a family 7 CBH (Cel7D) was enhanced only at lower concentrations of AA9D.

The Effect of Preventive Measures and Vaccination against SARS-CoV-2 on the Infection Risk, Treatment, and Hospitalization: A Cross-Sectional Study of Algeria.

Coronavirus disease (COVID-19) caused by the SARS-CoV-2 virus continues to afflict many countries around the world. The resurgence of COVID-19 cases and deaths in many countries shows a complacency in adhering to preventive guidelines. Consequently, vaccination continues to be a crucial intervention to reduce the effects of this pandemic.

Research on the Mechanical Properties and Microstructure of Modified Silt Sediment Geopolymer Materials.

The treatment of silted sediment in the river is a global problem. The accumulation of waste sediment will lead to an adverse impact on the environment. In this paper, the silted sediment was reused to produce geopolymer composite materials via alkali-activated gelling modification.

Asperphenyltones A and B: New Phenylfuropyridinone Skeleton from an Endophytic sp. GXNU-A1.

Chemical investigation of the fermentation extract of the mangrove endophytic fungus sp. GXNU-A1, isolated from L., discovered an undescribed pair of enantiomers (asperphenyltones A and B ()), together with four previously described metabolites: nodulisporol (), isosclerone (), 2,3,4-trihydroxy-6-(hydroxymethyl)-5-methylbenzyl alcohol (), and 4,6-dihydroxy-5-methoxy-7-methyl-1,3-dihydroisobenzofuran ().

Application of metabolomics to explore the automatic oxidation process of hazelnut oil.

The oxidation metabolites of hazelnut oil are complex and vary with different degrees of oxidation. At present, few studies have investigated the change law of metabolites during the oxidation process of hazelnut oil. In this study, ultrahigh-performance liquid chromatography tandem Q-Exactive high-resolution mass spectrometry (UPLC-QE/MS) was used to analyze the differential metabolites resulting from the oxidation of cold-pressed hazelnut oil during storage for 40 days with accelerated oxidation.

Oil spill identification in X-band marine radar image using K-means and texture feature.

Marine oil pollution poses a serious threat to the marine ecological balance. It is of great significance to develop rapid and efficient oil spill detection methods for the mitigation of marine oil spill pollution and the restoration of the marine ecological environment. X-band marine radar is one of the important monitoring devices, in this article, we perform the digital X-band radar image by "Sperry Marine" radar system for an oil film extraction experiment.