Molluscicidal assessment of certain toxicants: Impact on biochemical alterations and electrophoretic protein patterns in Massylaea vermiculata (O. F. Müller, 1774) snails.

Massylaea vermiculata snails are a significant gastropod pest in Egypt, threatening agriculture. Due to increasing concerns about conventional pesticides, it is imperative to find effective alternatives that are less harmful. We assessed the molluscicidal activity of abamectin, methoxyfenozide, and spinosad using the leaf-dipping method in vitro and the effect of LC of these compounds on biochemical aspects and protein electrophoresis.

The swinging upper eyelid approach for large encapsulated intraconal masses presenting superolateral to the optic nerve (U-Swing).

Purpose: To describe an upper eyelid swinging approach (U-Swing) that is suitable for the surgical excision of a large benign encapsulated lesions located in the intraconal space superolateral to the optic nerve.

Methods: This is a retrospective case series. The study included a review of five patients' records who had large encapsulated intraconal masses, superolateral to the optic nerve, and who underwent surgical excision with the U-Swing approach in the authors' institute over the last 10 years.

Spent coffee waste-derived biochar improves physical properties, water retention, and maize (Zea mays L.) growth in sandy soil.

Adding organic soil amendments can improve the physical and hydrological properties of soil, subsequently enhancing fertility for better crop production. In this study, spent Arabica and Columbian coffee wastes and their respective biochars were evaluated as soil amendments to improve the physical and hydrological properties of loamy sand soil and enhance maize (Zea mays L.) crop growth.

Effect of Stabilized nZVI Nanoparticles on the Reduction and Immobilization of Cr in Contaminated Soil: Column Experiment and Transport Modeling.

Batch and transport experiments were used to investigate the remediation of loamy sand soil contaminated with Cr(VI) using zero-valent iron nanoparticles (nZVI) stabilized by carboxymethylcellulose (CMC-nZVI). The effect of pH, ionic strength (IS), and flow rate on the removal efficiency of Cr(VI) were investigated under equilibrium (uniform transport) and non-equilibrium (two-site sorption) transport using the Hydrus-1D model. The overall removal efficiency ranged from 70 to over 90% based on the chemical characteristics of the CMC-nZVI suspension and the transport conditions.

Raring to go? A cross-sectional survey of student paramedics on how well they perceive their UK pre-registration course to be preparing them to manage suspected seizures.

Background: Paramedics convey a high proportion of seizure patients with no clinical need to emergency departments (EDs). In a landmark study, only 27% of UK paramedics reported being "Very…"/ "Extremely confident" making seizure conveyance decisions. Improved pre-registration education on seizures for paramedics is proposed.

Upper airway multilevel radiofrequency under local anesthesia can improve CPAP adherence for severe OSA patients.

Objective: To evaluate the effect of upper airway radiofrequency (RF) tissue reduction under local anesthesia (LA) in severe obstructive sleep apnea (OSA) patients using continuous positive airway pressure (CPAP) in order to improve their compliance and adherence.

Design: Thirty (30) patients were included in this randomized clinical trial, suffering from severe OSA seeking medical advice for better upper airway management while using CPAP. Multilevel RF tissue reduction at tongue base, soft palate and inferior nasal turbinates was done under LA in multiple sessions.

Controlled synthesis of graphene oxide/silica hybrid nanocomposites for removal of aromatic pollutants in water.

The remarkable characteristics of graphene make it a model candidate for boosting the effectiveness of nano-adsorbents with high potential owing to its large surface area, π-π interaction, and accessible functional groups that interact with an adsorbate. However, the stacking of graphene reduces its influence adsorption characteristics and also its practical application. On the other hand, the widespread use of aromatic compounds in the industry has aggravated the contamination of the water environment, and how to effectively remove them has become a research hotspot.

Improved anti-biofouling resistances using novel nanocelluloses/cellulose acetate extracted from rice straw based membranes for water desalination.

Cellulose and Nanocellulose acetate (NCA) have attractive novel properties like excellent mechanical properties, rich hydroxyl groups for modification, and natural properties with environmental friendliness. Cellulose was extracted from rice straw wastes as an extra value, then it had been further transformed into NCA using the acidic hydrolysis technique. The structural, crystalline, morphological, were characterized by Fourier transform infrared spectroscopy (FTIR), Proton nuclear magnetic resonance (HNMR), X-ray diffraction (XRD), Scanning microscopy, respectively.

Heavy metal pollution and associated health risk assessment of urban dust in Riyadh, Saudi Arabia.

Depending on their particle size and concentration, heavy metals in urban dust pose a health hazard to humans. This study investigated the total concentration, health risk, integrated pollution load index (IPI), and enrichment factor (EF) of various heavy metals in urban dust at different locations in Riyadh City. Surface dust samples were collected from 50 different residential yards in the north, south, west, east, and central corners of the city and analyzed for cadmium (Cd), chromium (Cr), copper (Cu), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn).

Acute toxicity assessment of polyaniline/Ag nanoparticles/graphene oxide quantum dots on Cypridopsis vidua and Artemia salina.

Nanotoxicology is argued and considered one of the emerging topics. In this study, polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide (GO) quantum dots (QDs) nanocomposite (PANI/Ag (AMPSA)/GO QDs NC) as a nanoadsorbent has a potential for removal of toxic hexavalent chromium (Cr(VI)) ions from water. The acute toxicity of this NC was evaluated on Artemia salina and freshwater Ostracods (Cypridopsis vidua) larvae for 48 h.

Polyaniline/Ag nanoparticles/graphene oxide nanocomposite fluorescent sensor for recognition of chromium (VI) ions.

Selective determination of toxic hexavalent chromium (Cr(VI)) is a stringent important due to its huge negative impact on the health and environment. Recently, the high sensitivity, rapidness, and cost-effectiveness of the fluorescent sensors for Cr(VI) have been developed. A fluorescent nanocomposite (NC) has been synthesized based on doped polyaniline (PANI), 2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped Ag nanoparticles (NPs) and graphene oxide (GO) quantum dots (QDs) via in situ reaction for highly selective sensing of Cr(VI) ions based on the luminescent quenching in the range from 0.

Potential short-term negative versus positive effects of olive mill-derived biochar on nutrient availability in a calcareous loamy sand soil.

In the present work, the olive mill solid waste (OMSW)-derived biochar (BC) was produced at various pyrolytic temperatures (300-700°C) and characterized to investigate its potential negative versus positive application effects on pH, electrical conductivity (EC), and nutrients (P, K, Na, Ca, Mg, Fe, Mn, Zn, and Cu) availability in a calcareous loamy sand soil. Therefore, a greenhouse pot experiment with maize (Zea mays L.) was conducted using treatments consisting of a control (CK), inorganic fertilizer of NPK (INF), and 1% and 3% (w/w) of OMSW-derived BCs.

Stability and Dynamic Aggregation of Bare and Stabilized Zero-Valent Iron Nanoparticles under Variable Solution Chemistry.

Surface modification of nanoscale zero-valent iron (nZVI) using polymer stabilizers (e.g., sodium carboxymethyl cellulose, CMC) is usually used to minimize aggregation, increase stability, and enhance transport of nZVI.

The development of a ternary nanocomposite for the removal of Cr(vi) ions from aqueous solutions.

The aim of this study is to develop a ternary nanocomposite (NC) of polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA)-capped silver nanoparticles (NPs)/graphene oxide quantum dots (PANI/Ag (AMPSA)/GO QDs) as an efficient adsorbent for the removal of the highly toxic hexavalent chromium (Cr(vi)) from polluted water. PANI/Ag (AMPSA)/GO QDs NC was synthesized oxidative polymerization. The effects of pH, adsorbent dose, initial concentration, temperature, contact time, ionic strength and co-existing ions on the removal of Cr(vi) by PANI/Ag (AMPSA)/GO QDs were investigated.

Highly Luminescent Ternary Nanocomposite of Polyaniline, Silver Nanoparticles and Graphene Oxide Quantum Dots.

Quantum dots (QDs) with photostability show a potential application in optical sensing and biological imaging. In this work, ternary nanocomposite (NC) of high fluorescent polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped silver nanoparticles (NPs)/graphene oxide quantum dots (PANI/Ag (AMPSA)/GO QDs) have been synthesized by in situ chemical oxidative polymerization of aniline in the presence of Ag (AMPSA) NPs and GO QDs. Ag (AMPSA) NPs and GO QDs were prepared by AgNO3 chemical reduction and glucose carbonization methods, respectively.

Modified Interscalene Approach for Resection of Symptomatic Cervical Rib: Anatomic Review and Clinical Study.

Background: Cervical ribs have been reported to be present in about 0.5% of the general population, 10% of patients with cervical rib who are symptomatic usually have neurogenic symptoms, but some have arterial symptoms. In 1861, Coote was the first to excise a cervical rib through a supraclavicular approach and relieved the symptoms of thoracic outlet syndrome.

Conocarpus biochar as a soil amendment for reducing heavy metal availability and uptake by maize plants.

The objective of this study was to assess the use of Concarpus biochar as a soil amendment for reducing heavy metal accessibility and uptake by maize plants (Zea mays L.). The impacts of biochar rates (0.

The balanced two-string technique for sulcus intraocular lens implantation in the absence of capsular support.

Purpose. To describe and explore an alternative approach for sulcus intraocular lens (IOL) implantation in the absence of capsular support. Methods.

Physicochemical properties of some bottled water brands in Alexandria Governorate, Egypt.

Background: Many people use bottled water instead of tap water for many reasons such as taste, ease of carrying, and thinking that it is safer than tap water. Irrespective of the reason, bottled water consumption has been steadily growing in the world for the past 30 years. In Egypt, this is still increasing to reach 3.

Serum resistin in acute myocardial infarction patients with and without diabetes mellitus.

Aim: Human resistin is an adipokine, with a possible link to coronary heart disease, and the relationship between serum resistin, insulin resistance, and type 2 diabetes mellitus (T2DM) remains controversial. Therefore, this study assessed serum resistin in patients with acute ST segment elevation myocardial infarction (STEMI), with and without T2DM.

Methods: Between June 2009 and July 2010, 55 subjects were recruited into three groups: 20 non-diabetic patients with acute STEMI (group 1), 20 diabetic patients with acute STEMI (group 2), and 15 healthy controls (group 3).

Dual antiplatelet drug resistance is a risk factor for cardiovascular events after percutaneous coronary intervention.

Background: Nonresponsiveness to clopidogrel and acetylsalicylic acid (ASA), a frequent result of platelet aggregometry studies, has unclear clinical and prognostic significance.

Methods: We performed impedance aggregometry in 182 patients 12-24 h after percutaneous coronary intervention (PCI) and a 600-mg loading dose of clopidogrel, adding 5 micromol/L ADP and 1 mg/L collagen to diluted whole blood to determine platelet inhibition by clopidogrel and ASA, respectively. Samples from nonresponders were incubated in vitro with methyl-S-adenosine monophosphate or ASA to distinguish between pharmacodynamic and pharmacokinetic types of resistance.

Use of the levator muscle as a frontalis sling.

Purpose: To investigate the use of the distal portion of levator aponeurosis as a flap for frontalis suspension in patients with severe congenital ptosis and poor levator function.

Methods: Eleven procedures were performed on 8 patients with severe congenital ptosis and poor levator muscle function. Three of the 8 patients had Marcus-Gunn jaw-winking phenomenon.