Galloping behavior of insulated overhead transmission line based on aerodynamic analysis.

The galloping of iced transmission line under extreme weather conditions, will lead to significant electrical faults and structural damage, and is becoming a serious issue that threatens the safe and stable operation of the power grid. In this paper, a simulation model of 10 kV insulated overhead transmission line is established based on finite element method, and the effects of various influencing factors on the galloping behavior and aerodynamic characteristics are investigated and analyzed. The results show that the aerodynamic stability of the iced lines is poorest, when the wind speed is between 7 and 15 m/s and the wind attack angle is around 50°.

Anastomotic leak rate following the implementation of a powered circular stapler in elective colorectal surgeries: a retrospective cohort study.

Background: The objective of this study was to compare the anastomotic leak rates between powered and manual circular staplers in elective left-sided colorectal resections.

Methods: A retrospective cohort study of elective left-sided colorectal resections before and after implementation of a powered circular stapler at a tertiary care center was conducted. The manual stapler group consisted of consecutive resections performed between January 2016 to December 2016 and the powered stapler group, between September 2021 and December 2022.

Impact of peri-operative frailty and operative stress on post-discharge mortality, readmission and days at home in Medicare beneficiaries.

Background: Understanding how patients' frailty and the physiological stress of surgical procedures affect postoperative outcomes may inform risk stratification of older patients undergoing surgery. The objective of the study was to examine the association of peri-operative frailty with mortality, 30-day readmission and days at home after non-cardiac surgical procedures of different physiological stress.

Methods: This retrospective study used Medicare claims data from a 7.

Effects of the combined exposure to chemicals and unusual working hours.

Objective: Both exposure to occupational chemicals and to unusual working hours have well documented effects on health. Determination of occupational exposure limits is, however, usually based on chemical-only exposure and assumes an 8-h workday, 5 days/week and a 40-h work week. A significant proportion of the workforce is exposed to chemicals while working in other work schedules.

Psychological Impact of the COVID-19 Pandemic on Canadian Surgical Residents: A Province-Wide Study.

Objectives: The objective of this study was to evaluate the psychological impact of the COVID-19 pandemic on surgical residents.

Design: An online survey was distributed evaluating multiple domains: demographics, health and socioeconomic factors, clinical experience, educational experience, and psychological outcomes. The Mayo Clinic Resident Well-Being Index (RWBI) was used as a validated measure of resident mental health.

open repair of renal artery aneurysm in 43-year-old with solitary kidney: a case report.

Renal artery aneurysms are rare. Indications for management include size > 3 cm, female gender within childbearing age, pain, hematuria, medically refractory hypertension, thromboembolism, dissection, and rupture. Management options include endovascular, open repair, and ex vivo approaches.

Preparation of SERS base membrane with cellulose compound dopamine and determination of hypochlorite.

Flexible silver substrates were made by in situ reduction of silver nanoparticles in bacterial cellulose membranes using the unique advantage of dopamine. Subsequently, we modified the substrate with 4-mercaptophenol (4-MP), a molecule capable of specifically recognizing ClO, and its corresponding SERS signal changes with the concentration of hypochlorite, thus allowing the quantitative detection of ClO content. The method showed a negative linear correlation (R = 0.

Preparation and Application of Magnetic Molecularly Imprinted Plasmonic SERS Composite Nanoparticles.

Magnetic molecularly imprinted polymers (MMIPs) are used as artificial antibody materials. MMIPs have attracted a great deal of interest because of their low cost, wide practicality, predetermination, stability and their ability to achieve rapid separation from complex sample environments by the action of external magnetic field. MMIPs can simulate the natural recognition of entities.

24 Effect of graft preparation techniques on clinical outcomes after Descemet membrane endothelial keratoplasty (DMEK).

Purpose: To compare the clinical outcomes after Descemet membrane endothelial keratoplasty (DMEK) for grafts prepared by the manual no-touch peeling technique and grafts prepared by a modified liquid bubble technique.

Material And Methods: For this study, 236 DMEK grafts were included that were prepared at Amnitrans EyeBank Rotterdam by experienced eye bank personnel. 132 grafts were prepared by using the 'no-touch' DMEK preparation technique and 104 grafts by using a modified liquid bubble technique.

32 Corneal guttae after descemet membrane endothelial keratoplasty (DMEK).

Purpose: To report on the occurrence of corneal guttae after Descemet membrane endothelial keratoplasty (DMEK) in eyes operated on for Fuchs endothelial corneal dystrophy (FECD).

Material And Methods: Case series of 10 eyes of 10 patients operated on for FECD at a tertiary referral center between 2008 and 2019. Average patient age was 61±12 years and 3 patients were female and 6 were male.

Corneal Guttae After Descemet Membrane Endothelial Keratoplasty.

Purpose: The aim of this study was to report on the occurrence of corneal guttae after Descemet membrane endothelial keratoplasty (DMEK).

Methods: In this retrospective case series, 13 eyes of 13 patients who underwent DMEK at 2 tertiary referral centers between 2007 and 2021 (average available follow-up 73 ± 52 months, range 18-174 months) and showed corneal guttae during postoperative examinations were included. Eye bank images were retrospectively reviewed.

Factors associated with recurrent appendicitis after nonoperative management.

Background: The objective of this study is to identify predictors for recurrent appendicitis in patients with appendicitis previously treated nonoperatively.

Methods: This is a prospective cohort study of all adult patients with appendicitis treated at a tertiary care hospital. Patient demographics, radiographic information, management, and clinical outcomes were recorded.

Hypoalbuminemia and colorectal cancer patients: Any correlation?: A systematic review and meta-analysis.

Background: In malnourished patients with colorectal cancer, hypoalbuminemia is common and was proposed to determine the postoperative outcome of colorectal surgery. Mounting articles published but have not been evaluated. We aim to assess the predictive value of preoperative hypoalbuminemia in patients undergoing colorectal surgery.

Management of rectal neuroendocrine tumours by transanal endoscopic microsurgery.

Aim: The objective of this study was to evaluate the safety and effectiveness of transanal endoscopic microsurgery for rectal neuroendocrine tumours.

Method: A retrospective cohort study of all pathology-confirmed rectal neuroendocrine tumours treated by transanal endoscopic microsurgery from April 2007 to December 2020 at a tertiary care centre was performed. Demographic, clinical, radiographic and pathological data were collected.

2D mapping of radiation dose and clonogenic survival for accurate assessment ofX-ray GRID irradiation effects.

Spatially fractionated radiation therapy (SFRT or GRID) is an approach to deliver high local radiation doses in an 'on-off' pattern. To better appraise the radiobiological effects from GRID, a framework to link local radiation dose to clonogenic survival needs to be developed. A549 lung cancer cells were irradiated in T25 cmflasks using 220 kV x-rays with an open field or through a tungsten GRID collimator with periodical 5 mm openings and 10 mm blockings.

Cellulose Nanocrystals (CNCs) and Its Modified Form from Durian Rind as Dexamethasone Carrier.

In this study, CNCs were extracted from durian rind. Modification to CNCs with saponin was conducted at 50 °C for one h. CNCs and CNCs-saponin were employed as dexamethasone carriers.

Perioperative Gabapentin Use and In-Hospital Adverse Clinical Events Among Older Adults After Major Surgery.

Importance: Gabapentin has been increasingly used as part of a multimodal analgesia regimen to reduce opioid use in perioperative pain management. However, the safety of perioperative gabapentin use among older patients remains uncertain.

Objective: To examine in-hospital adverse clinical events associated with perioperative gabapentin use among older patients undergoing major surgery.

Shift work with and without night shifts and breast cancer risk in a cohort study from Finland.

Objectives: To examine the association of shift work with and without night work with breast cancer among women in the public sector.

Methods: Using the Finnish Public Sector cohort study (N=33 359, mean age of 40.6 years at baseline), we investigated the associations of shift work and potential confounders with incident breast cancer.

Extended Work Shifts Increase Subjective Pain Complaints Among Cabin Crewmembers, but Not Among Airline Pilots or Healthcare Workers: A Repeated-Measures Study.

Objective: To determine whether four consecutive extended work shifts are associated with an increased risk of subjective pain complaints, sleep duration, and sleep disturbances.

Methods: Forty-three healthcare workers, 41 cabin crewmembers, and 18 airline pilots working 4 consecutive extended workdays reported subjective pain complaints and sleep after the 1st and 4th workday.

Results: The risk of headache (odds ratio [OR] 21.

Functional status recovery trajectories in hospitalised older adults with pneumonia.

Background And Objectives: Pneumonia is associated with significant mortality and morbidity in older adults. We investigated changes in functional status over 6 months after pneumonia hospitalisation by frailty status.

Methods And Measurements: This single-centre prospective cohort study enrolled 201 patients (mean age 79.

Sensitive and Selective Detection of Clenbuterol in Meat Samples by a Graphene Quantum Dot Fluorescent Probe Based on Cationic-Etherified Starch.

The use of clenbuterol (CLB) in large quantities in feedstuffs worldwide is illegal and potentially dangerous for human health. In this study, we directly prepared nitrogen-doped graphene quantum dots (N-GQDs) by a one-step method using cationic-etherified starch as raw material without pollution, which has the advantages of simple, green, and rapid synthesis of N-GQDs and high doping efficiency of nitrogen elements, compared with the traditional nitrogen doping method of reacting nitrogen source raw material with quantum dots. The N-GQDs synthesized by cationic etherification starch with different substitution degrees (DSs) exhibit good blue-green photoluminescence, good fluorescence stability, and water solubility.

Low-cost structured alginate-immobilized bentonite beads designed for an effective removal of persistent antibiotics from aqueous solution.

The removal of persistent antibiotics from the water bodies can be quite challenging. The present study deals with the removal of doripenem, one of the most stable and persistent antibiotics, from aqueous solution via adsorption technique using the low-cost structured alginate-immobilized bentonite (Alg@iB) beads which can be easily recovered after the process. Alg@iB possesses a porous interior and higher basal spacing compared with the acid-activated bentonite (iB).