A method for the simultaneous screening of 258 pesticide residues in silage using modified QuEChERS combined with liquid chromatography (LC)- and gas (GC)- quadrupole-Orbitrap mass spectrometry (Q-Orbitrap/MS) has been developed. After hydration, was homogenized a 1% acetic acid–acetonitrile solution, extract purified C18, PSA, anhydrous magnesium sulfate. Finally, sample detected LC/GC-Q-Orbit...

Laparoscopic cholecystectomy (LC) is one of the first laparoscopic procedures performed by surgical trainees. This study aims to determine preoperative and/or intraoperative predictors of difficult LC and to compare complications of LC performed by trainees with that performed by trained surgeons. A cohort of 180 consecutive patients with cholelithiasis who underwent LC was analyzed. We used un...

background methotrexate is a folic acid antagonist that has been in clinical use for five decades. its use in patients with brain tumors is primarily confined to primary central nervous system lymphoma (pcnsl), in which it is the cornerstone of chemotherapy. objectives a selective and sensitive high-performance liquid chromatography-electrospray ionization-mass spectrometry method was developed...

Ongoing climate change is manifesting in the expansion of urban heat island (UHI) effect. This paper evaluates microclimate benefits cool pavements and green infrastructures a historical square Rome, Italy. The ENVI-Met software enabled us to conduct microclimatic analysis examined July 2021, through comparison thermal performances current asphalt sampietrini pavement (AS) with three alternativ...

since its introduction in 1988, laparoscopic cholecystectomy (lc) has become the procedure of choice in the management of gallstone disease. it has well established advantages compared to its traditional open counterpart such as reduction in hospital stay and related costs, more rapid return to work, and reduction in pain and cosmetic problems. lc, like any other procedure, has its own indicati...

Low-carbohydrate/high-fat diets (LC-HFDs) in rodent models have been implicated with both weight loss and as a therapeutic approach to treat neurological diseases. LC-HFDs are known to induce ketosis; however, systematic studies analyzing the impact of the macronutrient composition on ketosis induction and weight loss success are lacking. Male Wistar rats were pair-fed for 4 wk either a standar...

A LC/MS method for the analysis of the highly polar anti-diabetic drug metformin in plasma samples is compared to an ion-pair HPLC method with UV detection. Both methods showed good linearity in the concentration range of 50 to 2000 ng/mL, good precision and accuracy and similar sensitivity. The LC-MS method has the advantage of a simpler and faster preparation procedure, shorter analytical tim...

BACKGROUND Development of pyriproxyfen and neonicotinoid resistance in the B-biotype whitefly and recent introduction of the Q biotype have the potential to threaten current whitefly management programs in Arizona. The possibility of integrating the novel anthranilic diamides chlorantraniliprole and cyantraniliprole into the current program to tackle these threats largely depends on whether the...

Background and Objectives: CO2 insuflation constitutes the commonest means of creating the pneumoperitoneum (PP), but it is attributed to many post-laparoscopic cholecystecomy adverse effects including pain triggering. The aim of this trial was to evaluate the efficacy of low-pressure CO2 PP during laparoscopic cholecystectomy (LC) in reducing the incidence of postoperative pain. Methods: A dou...

Cypermethrin is a synthetic pyrethroid class of insecticide. Toxic effects of cypermethrin were studied by selecting Marcia opima as an animal model. Cypermethrins effect on the total glycogen content of mantle, gill, foot, hepatopancreas, male gonad and a female gonad of an estuarine clam, Marcia opima was examined. The clams were exposed to 1.58 ppm cypermethrin for acute and 1/10th of that c...